1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1394 2018/12/08 15:17:25 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($disk_env{'user.domain'})) {
714: untie(%disk_env);
715: return undef;
716: }
717:
718: if (ref($userhashref) eq 'HASH') {
719: $userhashref->{'name'} = $disk_env{'user.name'};
720: $userhashref->{'domain'} = $disk_env{'user.domain'};
721: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
722: if ($userhashref->{'lti'}) {
723: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
724: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
725: }
726: }
727: untie(%disk_env);
728:
729: return $handle;
730: }
731:
732: sub timed_flock {
733: my ($file,$lock_type) = @_;
734: my $failed=0;
735: eval {
736: local $SIG{__DIE__}='DEFAULT';
737: local $SIG{ALRM}=sub {
738: $failed=1;
739: die("failed lock");
740: };
741: alarm(13);
742: flock($file,$lock_type);
743: alarm(0);
744: };
745: if ($failed) {
746: return undef;
747: } else {
748: return 1;
749: }
750: }
751:
752: sub get_sessionfile_vars {
753: my ($handle,$lonidsdir,$storearr) = @_;
754: my %returnhash;
755: unless (ref($storearr) eq 'ARRAY') {
756: return %returnhash;
757: }
758: if (-l "$lonidsdir/$handle.id") {
759: my $link = readlink("$lonidsdir/$handle.id");
760: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
761: $handle = $1;
762: }
763: }
764: if ((-e "$lonidsdir/$handle.id") &&
765: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
766: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
767: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
768: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
769: flock($idf,LOCK_SH);
770: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
771: &GDBM_READER(),0640)) {
772: foreach my $item (@{$storearr}) {
773: $returnhash{$item} = $disk_env{$item};
774: }
775: untie(%disk_env);
776: }
777: }
778: }
779: }
780: return %returnhash;
781: }
782:
783: # ---------------------------------------------------------- Append Environment
784:
785: sub appenv {
786: my ($newenv,$roles) = @_;
787: if (ref($newenv) eq 'HASH') {
788: foreach my $key (keys(%{$newenv})) {
789: my $refused = 0;
790: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
791: $refused = 1;
792: if (ref($roles) eq 'ARRAY') {
793: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
794: if (grep(/^\Q$role\E$/,@{$roles})) {
795: $refused = 0;
796: }
797: }
798: }
799: if ($refused) {
800: &logthis("<font color=\"blue\">WARNING: ".
801: "Attempt to modify environment ".$key." to ".$newenv->{$key}
802: .'</font>');
803: delete($newenv->{$key});
804: } else {
805: $env{$key}=$newenv->{$key};
806: }
807: }
808: my $lonids = $perlvar{'lonIDsDir'};
809: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
810: my $opened = open(my $env_file,'+<',$env{'user.environment'});
811: if ($opened
812: && &timed_flock($env_file,LOCK_EX)
813: &&
814: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
815: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
816: while (my ($key,$value) = each(%{$newenv})) {
817: $disk_env{$key} = $value;
818: }
819: untie(%disk_env);
820: }
821: }
822: }
823: return 'ok';
824: }
825: # ----------------------------------------------------- Delete from Environment
826:
827: sub delenv {
828: my ($delthis,$regexp,$roles) = @_;
829: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
830: my $refused = 1;
831: if (ref($roles) eq 'ARRAY') {
832: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
833: if (grep(/^\Q$role\E$/,@{$roles})) {
834: $refused = 0;
835: }
836: }
837: if ($refused) {
838: &logthis("<font color=\"blue\">WARNING: ".
839: "Attempt to delete from environment ".$delthis);
840: return 'error';
841: }
842: }
843: my $opened = open(my $env_file,'+<',$env{'user.environment'});
844: if ($opened
845: && &timed_flock($env_file,LOCK_EX)
846: &&
847: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
848: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
849: foreach my $key (keys(%disk_env)) {
850: if ($regexp) {
851: if ($key=~/^$delthis/) {
852: delete($env{$key});
853: delete($disk_env{$key});
854: }
855: } else {
856: if ($key=~/^\Q$delthis\E/) {
857: delete($env{$key});
858: delete($disk_env{$key});
859: }
860: }
861: }
862: untie(%disk_env);
863: }
864: return 'ok';
865: }
866:
867: sub get_env_multiple {
868: my ($name) = @_;
869: my @values;
870: if (defined($env{$name})) {
871: # exists is it an array
872: if (ref($env{$name})) {
873: @values=@{ $env{$name} };
874: } else {
875: $values[0]=$env{$name};
876: }
877: }
878: return(@values);
879: }
880:
881: # ------------------------------------------------------------------- Locking
882:
883: sub set_lock {
884: my ($text)=@_;
885: $locknum++;
886: my $id=$$.'-'.$locknum;
887: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
888: 'session.lock.'.$id => $text});
889: return $id;
890: }
891:
892: sub get_locks {
893: my $num=0;
894: my %texts=();
895: foreach my $lock (split(/\,/,$env{'session.locks'})) {
896: if ($lock=~/\w/) {
897: $num++;
898: $texts{$lock}=$env{'session.lock.'.$lock};
899: }
900: }
901: return ($num,%texts);
902: }
903:
904: sub remove_lock {
905: my ($id)=@_;
906: my $newlocks='';
907: foreach my $lock (split(/\,/,$env{'session.locks'})) {
908: if (($lock=~/\w/) && ($lock ne $id)) {
909: $newlocks.=','.$lock;
910: }
911: }
912: &appenv({'session.locks' => $newlocks});
913: &delenv('session.lock.'.$id);
914: }
915:
916: sub remove_all_locks {
917: my $activelocks=$env{'session.locks'};
918: foreach my $lock (split(/\,/,$env{'session.locks'})) {
919: if ($lock=~/\w/) {
920: &remove_lock($lock);
921: }
922: }
923: }
924:
925:
926: # ------------------------------------------ Find out current server userload
927: sub userload {
928: my $numusers=0;
929: {
930: opendir(LONIDS,$perlvar{'lonIDsDir'});
931: my $filename;
932: my $curtime=time;
933: while ($filename=readdir(LONIDS)) {
934: next if ($filename eq '.' || $filename eq '..');
935: next if ($filename =~ /publicuser_\d+\.id/);
936: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
937: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
938: if ($curtime-$mtime < 1800) { $numusers++; }
939: }
940: closedir(LONIDS);
941: }
942: my $userloadpercent=0;
943: my $maxuserload=$perlvar{'lonUserLoadLim'};
944: if ($maxuserload) {
945: $userloadpercent=100*$numusers/$maxuserload;
946: }
947: $userloadpercent=sprintf("%.2f",$userloadpercent);
948: return $userloadpercent;
949: }
950:
951: # ------------------------------ Find server with least workload from spare.tab
952:
953: sub spareserver {
954: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
955: my $spare_server;
956: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
957: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
958: : $userloadpercent;
959: my ($uint_dom,$remotesessions);
960: if (($udom ne '') && (&domain($udom) ne '')) {
961: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
962: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
963: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
964: $remotesessions = $udomdefaults{'remotesessions'};
965: }
966: my $spareshash = &this_host_spares($udom);
967: if (ref($spareshash) eq 'HASH') {
968: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
969: foreach my $try_server (@{ $spareshash->{'primary'} }) {
970: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
971: $try_server));
972: ($spare_server, $lowest_load) =
973: &compare_server_load($try_server, $spare_server, $lowest_load);
974: }
975: }
976:
977: my $found_server = ($spare_server ne '' && $lowest_load < 100);
978:
979: if (!$found_server) {
980: if (ref($spareshash->{'default'}) eq 'ARRAY') {
981: foreach my $try_server (@{ $spareshash->{'default'} }) {
982: next unless (&spare_can_host($udom,$uint_dom,
983: $remotesessions,$try_server));
984: ($spare_server, $lowest_load) =
985: &compare_server_load($try_server, $spare_server, $lowest_load);
986: }
987: }
988: }
989: }
990:
991: if (!$want_server_name) {
992: my $protocol = 'http';
993: if ($protocol{$spare_server} eq 'https') {
994: $protocol = $protocol{$spare_server};
995: }
996: if (defined($spare_server)) {
997: my $hostname = &hostname($spare_server);
998: if (defined($hostname)) {
999: $spare_server = $protocol.'://'.$hostname;
1000: }
1001: }
1002: }
1003: return $spare_server;
1004: }
1005:
1006: sub compare_server_load {
1007: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1008:
1009: if ($required) {
1010: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1011: my $remoterev = &get_server_loncaparev(undef,$try_server);
1012: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1013: if (($major eq '' && $minor eq '') ||
1014: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1015: return ($spare_server,$lowest_load);
1016: }
1017: }
1018:
1019: my $loadans = &reply('load', $try_server);
1020: my $userloadans = &reply('userload',$try_server);
1021:
1022: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1023: return ($spare_server, $lowest_load); #didn't get a number from the server
1024: }
1025:
1026: my $load;
1027: if ($loadans =~ /\d/) {
1028: if ($userloadans =~ /\d/) {
1029: #both are numbers, pick the bigger one
1030: $load = ($loadans > $userloadans) ? $loadans
1031: : $userloadans;
1032: } else {
1033: $load = $loadans;
1034: }
1035: } else {
1036: $load = $userloadans;
1037: }
1038:
1039: if (($load =~ /\d/) && ($load < $lowest_load)) {
1040: $spare_server = $try_server;
1041: $lowest_load = $load;
1042: }
1043: return ($spare_server,$lowest_load);
1044: }
1045:
1046: # --------------------------- ask offload servers if user already has a session
1047: sub find_existing_session {
1048: my ($udom,$uname) = @_;
1049: my $spareshash = &this_host_spares($udom);
1050: if (ref($spareshash) eq 'HASH') {
1051: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1052: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1053: return $try_server if (&has_user_session($try_server, $udom, $uname));
1054: }
1055: }
1056: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1057: foreach my $try_server (@{ $spareshash->{'default'} }) {
1058: return $try_server if (&has_user_session($try_server, $udom, $uname));
1059: }
1060: }
1061: }
1062: return;
1063: }
1064:
1065: # check if user's browser sent load balancer cookie and server still has session
1066: # and is not overloaded.
1067: sub check_for_balancer_cookie {
1068: my ($r,$update_mtime) = @_;
1069: my ($otherserver,$cookie);
1070: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1071: if (exists($cookies{'balanceID'})) {
1072: my $balid = $cookies{'balanceID'};
1073: $cookie=&LONCAPA::clean_handle($balid->value);
1074: my $balancedir=$r->dir_config('lonBalanceDir');
1075: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1076: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1077: my ($possudom,$possuname) = ($1,$2);
1078: my $has_session = 0;
1079: if ((&domain($possudom) ne '') &&
1080: (&homeserver($possuname,$possudom) ne 'no_host')) {
1081: my $try_server;
1082: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1083: if ($opened) {
1084: flock($idf,LOCK_SH);
1085: while (my $line = <$idf>) {
1086: chomp($line);
1087: if (&hostname($line) ne '') {
1088: $try_server = $line;
1089: last;
1090: }
1091: }
1092: close($idf);
1093: if (($try_server) &&
1094: (&has_user_session($try_server,$possudom,$possuname))) {
1095: my $lowest_load = 30000;
1096: ($otherserver,$lowest_load) =
1097: &compare_server_load($try_server,undef,$lowest_load);
1098: if ($otherserver ne '' && $lowest_load < 100) {
1099: $has_session = 1;
1100: } else {
1101: undef($otherserver);
1102: }
1103: }
1104: }
1105: }
1106: if ($has_session) {
1107: if ($update_mtime) {
1108: my $atime = my $mtime = time;
1109: utime($atime,$mtime,"$balancedir/$cookie.id");
1110: }
1111: } else {
1112: unlink("$balancedir/$cookie.id");
1113: }
1114: }
1115: }
1116: }
1117: return ($otherserver,$cookie);
1118: }
1119:
1120: sub delbalcookie {
1121: my ($cookie,$balancer) =@_;
1122: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1123: my ($udom,$uname) = ($1,$2);
1124: my $uprimary_id = &domain($udom,'primary');
1125: my $uintdom = &internet_dom($uprimary_id);
1126: my $intdom = &internet_dom($balancer);
1127: my $serverhomedom = &host_domain($balancer);
1128: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1129: return &reply("delbalcookie:$cookie",$balancer);
1130: }
1131: }
1132: }
1133:
1134: # -------------------------------- ask if server already has a session for user
1135: sub has_user_session {
1136: my ($lonid,$udom,$uname) = @_;
1137: my $result = &reply(join(':','userhassession',
1138: map {&escape($_)} ($udom,$uname)),$lonid);
1139: return 1 if ($result eq 'ok');
1140:
1141: return 0;
1142: }
1143:
1144: # --------- determine least loaded server in a user's domain which allows login
1145:
1146: sub choose_server {
1147: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1148: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1149: my %servers = &get_servers($udom);
1150: my $lowest_load = 30000;
1151: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1152: if ($skiploadbal) {
1153: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1154: unless (defined($cached)) {
1155: my $cachetime = 60*60*24;
1156: my %domconfig =
1157: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1158: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1159: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1160: $cachetime);
1161: }
1162: }
1163: }
1164: foreach my $lonhost (keys(%servers)) {
1165: if ($skiploadbal) {
1166: if (ref($balancers) eq 'HASH') {
1167: next if (exists($balancers->{$lonhost}));
1168: }
1169: }
1170: my $loginvia;
1171: if ($checkloginvia) {
1172: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1173: if ($loginvia) {
1174: my ($server,$path) = split(/:/,$loginvia);
1175: ($login_host, $lowest_load) =
1176: &compare_server_load($server, $login_host, $lowest_load, $required);
1177: if ($login_host eq $server) {
1178: $portal_path = $path;
1179: $isredirect = 1;
1180: }
1181: } else {
1182: ($login_host, $lowest_load) =
1183: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1184: if ($login_host eq $lonhost) {
1185: $portal_path = '';
1186: $isredirect = '';
1187: }
1188: }
1189: } else {
1190: ($login_host, $lowest_load) =
1191: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1192: }
1193: }
1194: if ($login_host ne '') {
1195: $hostname = &hostname($login_host);
1196: }
1197: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1198: }
1199:
1200: # --------------------------------------------- Try to change a user's password
1201:
1202: sub changepass {
1203: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1204: $currentpass = &escape($currentpass);
1205: $newpass = &escape($newpass);
1206: my $lonhost = $perlvar{'lonHostID'};
1207: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1208: $server);
1209: if (! $answer) {
1210: &logthis("No reply on password change request to $server ".
1211: "by $uname in domain $udom.");
1212: } elsif ($answer =~ "^ok") {
1213: &logthis("$uname in $udom successfully changed their password ".
1214: "on $server.");
1215: } elsif ($answer =~ "^pwchange_failure") {
1216: &logthis("$uname in $udom was unable to change their password ".
1217: "on $server. The action was blocked by either lcpasswd ".
1218: "or pwchange");
1219: } elsif ($answer =~ "^non_authorized") {
1220: &logthis("$uname in $udom did not get their password correct when ".
1221: "attempting to change it on $server.");
1222: } elsif ($answer =~ "^auth_mode_error") {
1223: &logthis("$uname in $udom attempted to change their password despite ".
1224: "not being locally or internally authenticated on $server.");
1225: } elsif ($answer =~ "^unknown_user") {
1226: &logthis("$uname in $udom attempted to change their password ".
1227: "on $server but were unable to because $server is not ".
1228: "their home server.");
1229: } elsif ($answer =~ "^refused") {
1230: &logthis("$server refused to change $uname in $udom password because ".
1231: "it was sent an unencrypted request to change the password.");
1232: } elsif ($answer =~ "invalid_client") {
1233: &logthis("$server refused to change $uname in $udom password because ".
1234: "it was a reset by e-mail originating from an invalid server.");
1235: }
1236: return $answer;
1237: }
1238:
1239: # ----------------------- Try to determine user's current authentication scheme
1240:
1241: sub queryauthenticate {
1242: my ($uname,$udom)=@_;
1243: my $uhome=&homeserver($uname,$udom);
1244: if (!$uhome) {
1245: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1246: return 'no_host';
1247: }
1248: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1249: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1250: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1251: }
1252: return $answer;
1253: }
1254:
1255: # --------- Try to authenticate user from domain's lib servers (first this one)
1256:
1257: sub authenticate {
1258: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1259: $upass=&escape($upass);
1260: $uname= &LONCAPA::clean_username($uname);
1261: my $uhome=&homeserver($uname,$udom,1);
1262: my $newhome;
1263: if ((!$uhome) || ($uhome eq 'no_host')) {
1264: # Maybe the machine was offline and only re-appeared again recently?
1265: &reconlonc();
1266: # One more
1267: $uhome=&homeserver($uname,$udom,1);
1268: if (($uhome eq 'no_host') && $checkdefauth) {
1269: if (defined(&domain($udom,'primary'))) {
1270: $newhome=&domain($udom,'primary');
1271: }
1272: if ($newhome ne '') {
1273: $uhome = $newhome;
1274: }
1275: }
1276: if ((!$uhome) || ($uhome eq 'no_host')) {
1277: &logthis("User $uname at $udom is unknown in authenticate");
1278: return 'no_host';
1279: }
1280: }
1281: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1282: if ($answer eq 'authorized') {
1283: if ($newhome) {
1284: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1285: return 'no_account_on_host';
1286: } else {
1287: &logthis("User $uname at $udom authorized by $uhome");
1288: return $uhome;
1289: }
1290: }
1291: if ($answer eq 'non_authorized') {
1292: &logthis("User $uname at $udom rejected by $uhome");
1293: return 'no_host';
1294: }
1295: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1296: return 'no_host';
1297: }
1298:
1299: sub can_host_session {
1300: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1301: my $canhost = 1;
1302: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1303: if (ref($remotesessions) eq 'HASH') {
1304: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1305: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1306: $canhost = 0;
1307: } else {
1308: $canhost = 1;
1309: }
1310: }
1311: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1312: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1313: $canhost = 1;
1314: } else {
1315: $canhost = 0;
1316: }
1317: }
1318: if ($canhost) {
1319: if ($remotesessions->{'version'} ne '') {
1320: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1321: if ($reqmajor ne '' && $reqminor ne '') {
1322: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1323: my $major = $1;
1324: my $minor = $2;
1325: if (($major < $reqmajor ) ||
1326: (($major == $reqmajor) && ($minor < $reqminor))) {
1327: $canhost = 0;
1328: }
1329: } else {
1330: $canhost = 0;
1331: }
1332: }
1333: }
1334: }
1335: }
1336: if ($canhost) {
1337: if (ref($hostedsessions) eq 'HASH') {
1338: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1339: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1340: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1341: if (($uint_dom ne '') &&
1342: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1343: $canhost = 0;
1344: } else {
1345: $canhost = 1;
1346: }
1347: }
1348: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1349: if (($uint_dom ne '') &&
1350: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1351: $canhost = 1;
1352: } else {
1353: $canhost = 0;
1354: }
1355: }
1356: }
1357: }
1358: return $canhost;
1359: }
1360:
1361: sub spare_can_host {
1362: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1363: my $canhost=1;
1364: my $try_server_hostname = &hostname($try_server);
1365: my $serverhomeID = &get_server_homeID($try_server_hostname);
1366: my $serverhomedom = &host_domain($serverhomeID);
1367: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1368: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1369: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1370: $canhost = 0;
1371: }
1372: }
1373: if (($canhost) && ($uint_dom)) {
1374: my @intdoms;
1375: my $internet_names = &get_internet_names($try_server);
1376: if (ref($internet_names) eq 'ARRAY') {
1377: @intdoms = @{$internet_names};
1378: }
1379: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1380: my $remoterev = &get_server_loncaparev(undef,$try_server);
1381: $canhost = &can_host_session($udom,$try_server,$remoterev,
1382: $remotesessions,
1383: $defdomdefaults{'hostedsessions'});
1384: }
1385: }
1386: return $canhost;
1387: }
1388:
1389: sub this_host_spares {
1390: my ($dom) = @_;
1391: my ($dom_in_use,$lonhost_in_use,$result);
1392: my @hosts = ¤t_machine_ids();
1393: foreach my $lonhost (@hosts) {
1394: if (&host_domain($lonhost) eq $dom) {
1395: $dom_in_use = $dom;
1396: $lonhost_in_use = $lonhost;
1397: last;
1398: }
1399: }
1400: if ($dom_in_use ne '') {
1401: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1402: }
1403: if (ref($result) ne 'HASH') {
1404: $lonhost_in_use = $perlvar{'lonHostID'};
1405: $dom_in_use = &host_domain($lonhost_in_use);
1406: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1407: if (ref($result) ne 'HASH') {
1408: $result = \%spareid;
1409: }
1410: }
1411: return $result;
1412: }
1413:
1414: sub spares_for_offload {
1415: my ($dom_in_use,$lonhost_in_use) = @_;
1416: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1417: if (defined($cached)) {
1418: return $result;
1419: } else {
1420: my $cachetime = 60*60*24;
1421: my %domconfig =
1422: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1423: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1424: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1425: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1426: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1427: }
1428: }
1429: }
1430: }
1431: return;
1432: }
1433:
1434: sub get_lonbalancer_config {
1435: my ($servers) = @_;
1436: my ($currbalancer,$currtargets);
1437: if (ref($servers) eq 'HASH') {
1438: foreach my $server (keys(%{$servers})) {
1439: my %what = (
1440: spareid => 1,
1441: perlvar => 1,
1442: );
1443: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1444: if ($result eq 'ok') {
1445: if (ref($returnhash) eq 'HASH') {
1446: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1447: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1448: $currbalancer = $server;
1449: $currtargets = {};
1450: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1451: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1452: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1453: }
1454: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1455: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1456: }
1457: }
1458: last;
1459: }
1460: }
1461: }
1462: }
1463: }
1464: }
1465: return ($currbalancer,$currtargets);
1466: }
1467:
1468: sub check_loadbalancing {
1469: my ($uname,$udom,$caller) = @_;
1470: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1471: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1472: my $lonhost = $perlvar{'lonHostID'};
1473: my @hosts = ¤t_machine_ids();
1474: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1475: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1476: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1477: my $serverhomedom = &host_domain($lonhost);
1478: my $domneedscache;
1479: my $cachetime = 60*60*24;
1480:
1481: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1482: $dom_in_use = $udom;
1483: $homeintdom = 1;
1484: } else {
1485: $dom_in_use = $serverhomedom;
1486: }
1487: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1488: unless (defined($cached)) {
1489: my %domconfig =
1490: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1491: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1492: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1493: } else {
1494: $domneedscache = $dom_in_use;
1495: }
1496: }
1497: if (ref($result) eq 'HASH') {
1498: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1499: &check_balancer_result($result,@hosts);
1500: if ($is_balancer) {
1501: if (ref($currrules) eq 'HASH') {
1502: if ($homeintdom) {
1503: if ($uname ne '') {
1504: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1505: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1506: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1507: $rule_in_effect = $currrules->{'_LC_author'};
1508: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1509: $rule_in_effect = $currrules->{'_LC_adv'}
1510: }
1511: }
1512: if ($rule_in_effect eq '') {
1513: my %userenv = &userenvironment($udom,$uname,'inststatus');
1514: if ($userenv{'inststatus'} ne '') {
1515: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1516: my ($othertitle,$usertypes,$types) =
1517: &Apache::loncommon::sorted_inst_types($udom);
1518: if (ref($types) eq 'ARRAY') {
1519: foreach my $type (@{$types}) {
1520: if (grep(/^\Q$type\E$/,@statuses)) {
1521: if (exists($currrules->{$type})) {
1522: $rule_in_effect = $currrules->{$type};
1523: }
1524: }
1525: }
1526: }
1527: } else {
1528: if (exists($currrules->{'default'})) {
1529: $rule_in_effect = $currrules->{'default'};
1530: }
1531: }
1532: }
1533: } else {
1534: if (exists($currrules->{'default'})) {
1535: $rule_in_effect = $currrules->{'default'};
1536: }
1537: }
1538: } else {
1539: if ($currrules->{'_LC_external'} ne '') {
1540: $rule_in_effect = $currrules->{'_LC_external'};
1541: }
1542: }
1543: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1544: $uname,$udom);
1545: }
1546: }
1547: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1548: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1549: unless (defined($cached)) {
1550: my %domconfig =
1551: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1552: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1553: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1554: } else {
1555: $domneedscache = $serverhomedom;
1556: }
1557: }
1558: if (ref($result) eq 'HASH') {
1559: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1560: &check_balancer_result($result,@hosts);
1561: if ($is_balancer) {
1562: if (ref($currrules) eq 'HASH') {
1563: if ($currrules->{'_LC_internetdom'} ne '') {
1564: $rule_in_effect = $currrules->{'_LC_internetdom'};
1565: }
1566: }
1567: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1568: $uname,$udom);
1569: }
1570: } else {
1571: if ($perlvar{'lonBalancer'} eq 'yes') {
1572: $is_balancer = 1;
1573: $offloadto = &this_host_spares($dom_in_use);
1574: }
1575: unless (defined($cached)) {
1576: $domneedscache = $serverhomedom;
1577: }
1578: }
1579: } else {
1580: if ($perlvar{'lonBalancer'} eq 'yes') {
1581: $is_balancer = 1;
1582: $offloadto = &this_host_spares($dom_in_use);
1583: }
1584: unless (defined($cached)) {
1585: $domneedscache = $serverhomedom;
1586: }
1587: }
1588: if ($domneedscache) {
1589: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1590: }
1591: if ($is_balancer) {
1592: my $lowest_load = 30000;
1593: if (ref($offloadto) eq 'HASH') {
1594: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1595: foreach my $try_server (@{$offloadto->{'primary'}}) {
1596: ($otherserver,$lowest_load) =
1597: &compare_server_load($try_server,$otherserver,$lowest_load);
1598: }
1599: }
1600: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1601:
1602: if (!$found_server) {
1603: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1604: foreach my $try_server (@{$offloadto->{'default'}}) {
1605: ($otherserver,$lowest_load) =
1606: &compare_server_load($try_server,$otherserver,$lowest_load);
1607: }
1608: }
1609: }
1610: } elsif (ref($offloadto) eq 'ARRAY') {
1611: if (@{$offloadto} == 1) {
1612: $otherserver = $offloadto->[0];
1613: } elsif (@{$offloadto} > 1) {
1614: foreach my $try_server (@{$offloadto}) {
1615: ($otherserver,$lowest_load) =
1616: &compare_server_load($try_server,$otherserver,$lowest_load);
1617: }
1618: }
1619: }
1620: unless ($caller eq 'login') {
1621: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1622: $is_balancer = 0;
1623: if ($uname ne '' && $udom ne '') {
1624: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1625: &appenv({'user.loadbalexempt' => $lonhost,
1626: 'user.loadbalcheck.time' => time});
1627: }
1628: }
1629: }
1630: }
1631: unless ($homeintdom) {
1632: undef($setcookie);
1633: }
1634: }
1635: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1636: }
1637:
1638: sub check_balancer_result {
1639: my ($result,@hosts) = @_;
1640: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1641: if (ref($result) eq 'HASH') {
1642: if ($result->{'lonhost'} ne '') {
1643: my $currbalancer = $result->{'lonhost'};
1644: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1645: $is_balancer = 1;
1646: $currtargets = $result->{'targets'};
1647: $currrules = $result->{'rules'};
1648: }
1649: $dom_balancers = $currbalancer;
1650: } else {
1651: if (keys(%{$result})) {
1652: foreach my $key (keys(%{$result})) {
1653: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1654: (ref($result->{$key}) eq 'HASH')) {
1655: $is_balancer = 1;
1656: $currrules = $result->{$key}{'rules'};
1657: $currtargets = $result->{$key}{'targets'};
1658: $setcookie = $result->{$key}{'cookie'};
1659: last;
1660: }
1661: }
1662: $dom_balancers = join(',',sort(keys(%{$result})));
1663: }
1664: }
1665: }
1666: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1667: }
1668:
1669: sub get_loadbalancer_targets {
1670: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1671: my $offloadto;
1672: if ($rule_in_effect eq 'none') {
1673: return [$perlvar{'lonHostID'}];
1674: } elsif ($rule_in_effect eq '') {
1675: $offloadto = $currtargets;
1676: } else {
1677: if ($rule_in_effect eq 'homeserver') {
1678: my $homeserver = &homeserver($uname,$udom);
1679: if ($homeserver ne 'no_host') {
1680: $offloadto = [$homeserver];
1681: }
1682: } elsif ($rule_in_effect eq 'externalbalancer') {
1683: my %domconfig =
1684: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1685: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1686: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1687: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1688: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1689: }
1690: }
1691: } else {
1692: my %servers = &internet_dom_servers($udom);
1693: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1694: if (&hostname($remotebalancer) ne '') {
1695: $offloadto = [$remotebalancer];
1696: }
1697: }
1698: } elsif (&hostname($rule_in_effect) ne '') {
1699: $offloadto = [$rule_in_effect];
1700: }
1701: }
1702: return $offloadto;
1703: }
1704:
1705: sub internet_dom_servers {
1706: my ($dom) = @_;
1707: my (%uniqservers,%servers);
1708: my $primaryserver = &hostname(&domain($dom,'primary'));
1709: my @machinedoms = &machine_domains($primaryserver);
1710: foreach my $mdom (@machinedoms) {
1711: my %currservers = %servers;
1712: my %server = &get_servers($mdom);
1713: %servers = (%currservers,%server);
1714: }
1715: my %by_hostname;
1716: foreach my $id (keys(%servers)) {
1717: push(@{$by_hostname{$servers{$id}}},$id);
1718: }
1719: foreach my $hostname (sort(keys(%by_hostname))) {
1720: if (@{$by_hostname{$hostname}} > 1) {
1721: my $match = 0;
1722: foreach my $id (@{$by_hostname{$hostname}}) {
1723: if (&host_domain($id) eq $dom) {
1724: $uniqservers{$id} = $hostname;
1725: $match = 1;
1726: }
1727: }
1728: unless ($match) {
1729: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1730: }
1731: } else {
1732: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1733: }
1734: }
1735: return %uniqservers;
1736: }
1737:
1738: sub trusted_domains {
1739: my ($cmdtype,$calldom) = @_;
1740: my ($trusted,$untrusted);
1741: if (&domain($calldom) eq '') {
1742: return ($trusted,$untrusted);
1743: }
1744: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1745: return ($trusted,$untrusted);
1746: }
1747: my $callprimary = &domain($calldom,'primary');
1748: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1749: if ($intcalldom eq '') {
1750: return ($trusted,$untrusted);
1751: }
1752:
1753: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1754: unless (defined($cached)) {
1755: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1756: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1757: $trustconfig = $domconfig{'trust'};
1758: }
1759: if (ref($trustconfig)) {
1760: my (%possexc,%possinc,@allexc,@allinc);
1761: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1762: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1763: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1764: }
1765: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1766: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1767: }
1768: }
1769: if (keys(%possexc)) {
1770: if (keys(%possinc)) {
1771: foreach my $key (sort(keys(%possexc))) {
1772: next if ($key eq $intcalldom);
1773: unless ($possinc{$key}) {
1774: push(@allexc,$key);
1775: }
1776: }
1777: } else {
1778: @allexc = sort(keys(%possexc));
1779: }
1780: }
1781: if (keys(%possinc)) {
1782: $possinc{$intcalldom} = 1;
1783: @allinc = sort(keys(%possinc));
1784: }
1785: if ((@allexc > 0) || (@allinc > 0)) {
1786: my %doms_by_intdom;
1787: my %allintdoms = &all_host_intdom();
1788: my %alldoms = &all_host_domain();
1789: foreach my $key (%allintdoms) {
1790: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1791: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1792: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1793: }
1794: } else {
1795: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1796: }
1797: }
1798: foreach my $exc (@allexc) {
1799: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1800: $untrusted = $doms_by_intdom{$exc};
1801: }
1802: }
1803: foreach my $inc (@allinc) {
1804: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1805: $trusted = $doms_by_intdom{$inc};
1806: }
1807: }
1808: }
1809: }
1810: return ($trusted,$untrusted);
1811: }
1812:
1813: sub will_trust {
1814: my ($cmdtype,$domain,$possdom) = @_;
1815: return 1 if ($domain eq $possdom);
1816: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1817: my $willtrust;
1818: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1819: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1820: $willtrust = 1;
1821: }
1822: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1823: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1824: $willtrust = 1;
1825: }
1826: } else {
1827: $willtrust = 1;
1828: }
1829: return $willtrust;
1830: }
1831:
1832: # ---------------------- Find the homebase for a user from domain's lib servers
1833:
1834: my %homecache;
1835: sub homeserver {
1836: my ($uname,$udom,$ignoreBadCache)=@_;
1837: my $index="$uname:$udom";
1838:
1839: if (exists($homecache{$index})) { return $homecache{$index}; }
1840:
1841: my %servers = &get_servers($udom,'library');
1842: foreach my $tryserver (keys(%servers)) {
1843: next if ($ignoreBadCache ne 'true' &&
1844: exists($badServerCache{$tryserver}));
1845:
1846: my $answer=reply("home:$udom:$uname",$tryserver);
1847: if ($answer eq 'found') {
1848: delete($badServerCache{$tryserver});
1849: return $homecache{$index}=$tryserver;
1850: } elsif ($answer eq 'no_host') {
1851: $badServerCache{$tryserver}=1;
1852: }
1853: }
1854: return 'no_host';
1855: }
1856:
1857: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1858:
1859: sub idget {
1860: my ($udom,$idsref,$namespace)=@_;
1861: my %returnhash=();
1862: my @ids=();
1863: if (ref($idsref) eq 'ARRAY') {
1864: @ids = @{$idsref};
1865: } else {
1866: return %returnhash;
1867: }
1868: if ($namespace eq '') {
1869: $namespace = 'ids';
1870: }
1871:
1872: my %servers = &get_servers($udom,'library');
1873: foreach my $tryserver (keys(%servers)) {
1874: my $idlist=join('&', map { &escape($_); } @ids);
1875: if ($namespace eq 'ids') {
1876: $idlist=~tr/A-Z/a-z/;
1877: }
1878: my $reply;
1879: if ($namespace eq 'ids') {
1880: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1881: } else {
1882: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1883: }
1884: my @answer=();
1885: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1886: @answer=split(/\&/,$reply);
1887: } ;
1888: my $i;
1889: for ($i=0;$i<=$#ids;$i++) {
1890: if ($answer[$i]) {
1891: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1892: }
1893: }
1894: }
1895: return %returnhash;
1896: }
1897:
1898: # ------------------------------------- Find the IDs behind a list of usernames
1899:
1900: sub idrget {
1901: my ($udom,@unames)=@_;
1902: my %returnhash=();
1903: foreach my $uname (@unames) {
1904: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1905: }
1906: return %returnhash;
1907: }
1908:
1909: # Store away a list of names and associated student/employee IDs or clicker IDs
1910:
1911: sub idput {
1912: my ($udom,$idsref,$uhom,$namespace)=@_;
1913: my %servers=();
1914: my %ids=();
1915: my %byid = ();
1916: if (ref($idsref) eq 'HASH') {
1917: %ids=%{$idsref};
1918: }
1919: if ($namespace eq '') {
1920: $namespace = 'ids';
1921: }
1922: foreach my $uname (keys(%ids)) {
1923: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1924: if ($uhom eq '') {
1925: $uhom=&homeserver($uname,$udom);
1926: }
1927: if ($uhom ne 'no_host') {
1928: my $esc_unam=&escape($uname);
1929: if ($namespace eq 'ids') {
1930: my $id=&escape($ids{$uname});
1931: $id=~tr/A-Z/a-z/;
1932: my $esc_unam=&escape($uname);
1933: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1934: } else {
1935: my @currids = split(/,/,$ids{$uname});
1936: foreach my $id (@currids) {
1937: $byid{$uhom}{$id} .= $uname.',';
1938: }
1939: }
1940: }
1941: }
1942: if ($namespace eq 'clickers') {
1943: foreach my $server (keys(%byid)) {
1944: if (ref($byid{$server}) eq 'HASH') {
1945: foreach my $id (keys(%{$byid{$server}})) {
1946: $byid{$server} =~ s/,$//;
1947: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1948: }
1949: }
1950: }
1951: }
1952: foreach my $server (keys(%servers)) {
1953: $servers{$server} =~ s/\&$//;
1954: if ($namespace eq 'ids') {
1955: &critical('idput:'.$udom.':'.$servers{$server},$server);
1956: } else {
1957: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1958: }
1959: }
1960: }
1961:
1962: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1963:
1964: sub iddel {
1965: my ($udom,$idshashref,$uhome,$namespace)=@_;
1966: my %result=();
1967: my %ids=();
1968: my %byid = ();
1969: if (ref($idshashref) eq 'HASH') {
1970: %ids=%{$idshashref};
1971: } else {
1972: return %result;
1973: }
1974: if ($namespace eq '') {
1975: $namespace = 'ids';
1976: }
1977: my %servers=();
1978: while (my ($id,$unamestr) = each(%ids)) {
1979: if ($namespace eq 'ids') {
1980: my $uhom = $uhome;
1981: if ($uhom eq '') {
1982: $uhom=&homeserver($unamestr,$udom);
1983: }
1984: if ($uhom ne 'no_host') {
1985: $servers{$uhom}.='&'.&escape($id);
1986: }
1987: } else {
1988: my @curritems = split(/,/,$ids{$id});
1989: foreach my $uname (@curritems) {
1990: my $uhom = $uhome;
1991: if ($uhom eq '') {
1992: $uhom=&homeserver($uname,$udom);
1993: }
1994: if ($uhom ne 'no_host') {
1995: $byid{$uhom}{$id} .= $uname.',';
1996: }
1997: }
1998: }
1999: }
2000: if ($namespace eq 'clickers') {
2001: foreach my $server (keys(%byid)) {
2002: if (ref($byid{$server}) eq 'HASH') {
2003: foreach my $id (keys(%{$byid{$server}})) {
2004: $byid{$server}{$id} =~ s/,$//;
2005: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2006: }
2007: }
2008: }
2009: }
2010: foreach my $server (keys(%servers)) {
2011: $servers{$server} =~ s/\&$//;
2012: if ($namespace eq 'ids') {
2013: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2014: } elsif ($namespace eq 'clickers') {
2015: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2016: }
2017: }
2018: return %result;
2019: }
2020:
2021: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2022:
2023: sub updateclickers {
2024: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2025: my %clickers;
2026: if (ref($idshashref) eq 'HASH') {
2027: %clickers=%{$idshashref};
2028: } else {
2029: return;
2030: }
2031: my $items='';
2032: foreach my $item (keys(%clickers)) {
2033: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2034: }
2035: $items=~s/\&$//;
2036: my $request = "updateclickers:$udom:$action:$items";
2037: if ($critical) {
2038: return &critical($request,$uhome);
2039: } else {
2040: return &reply($request,$uhome);
2041: }
2042: }
2043:
2044: # ------------------------------dump from db file owned by domainconfig user
2045: sub dump_dom {
2046: my ($namespace, $udom, $regexp) = @_;
2047:
2048: $udom ||= $env{'user.domain'};
2049:
2050: return () unless $udom;
2051:
2052: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2053: }
2054:
2055: # ------------------------------------------ get items from domain db files
2056:
2057: sub get_dom {
2058: my ($namespace,$storearr,$udom,$uhome)=@_;
2059: return if ($udom eq 'public');
2060: my $items='';
2061: foreach my $item (@$storearr) {
2062: $items.=&escape($item).'&';
2063: }
2064: $items=~s/\&$//;
2065: if (!$udom) {
2066: $udom=$env{'user.domain'};
2067: return if ($udom eq 'public');
2068: if (defined(&domain($udom,'primary'))) {
2069: $uhome=&domain($udom,'primary');
2070: } else {
2071: undef($uhome);
2072: }
2073: } else {
2074: if (!$uhome) {
2075: if (defined(&domain($udom,'primary'))) {
2076: $uhome=&domain($udom,'primary');
2077: }
2078: }
2079: }
2080: if ($udom && $uhome && ($uhome ne 'no_host')) {
2081: my $rep;
2082: if ($namespace =~ /^enc/) {
2083: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2084: } else {
2085: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2086: }
2087: my %returnhash;
2088: if ($rep eq '' || $rep =~ /^error: 2 /) {
2089: return %returnhash;
2090: }
2091: my @pairs=split(/\&/,$rep);
2092: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2093: return @pairs;
2094: }
2095: my $i=0;
2096: foreach my $item (@$storearr) {
2097: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2098: $i++;
2099: }
2100: return %returnhash;
2101: } else {
2102: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2103: }
2104: }
2105:
2106: # -------------------------------------------- put items in domain db files
2107:
2108: sub put_dom {
2109: my ($namespace,$storehash,$udom,$uhome)=@_;
2110: if (!$udom) {
2111: $udom=$env{'user.domain'};
2112: if (defined(&domain($udom,'primary'))) {
2113: $uhome=&domain($udom,'primary');
2114: } else {
2115: undef($uhome);
2116: }
2117: } else {
2118: if (!$uhome) {
2119: if (defined(&domain($udom,'primary'))) {
2120: $uhome=&domain($udom,'primary');
2121: }
2122: }
2123: }
2124: if ($udom && $uhome && ($uhome ne 'no_host')) {
2125: my $items='';
2126: foreach my $item (keys(%$storehash)) {
2127: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2128: }
2129: $items=~s/\&$//;
2130: if ($namespace =~ /^enc/) {
2131: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2132: } else {
2133: return &reply("putdom:$udom:$namespace:$items",$uhome);
2134: }
2135: } else {
2136: &logthis("put_dom failed - no homeserver and/or domain");
2137: }
2138: }
2139:
2140: # --------------------- newput for items in db file owned by domainconfig user
2141: sub newput_dom {
2142: my ($namespace,$storehash,$udom) = @_;
2143: my $result;
2144: if (!$udom) {
2145: $udom=$env{'user.domain'};
2146: }
2147: if ($udom) {
2148: my $uname = &get_domainconfiguser($udom);
2149: $result = &newput($namespace,$storehash,$udom,$uname);
2150: }
2151: return $result;
2152: }
2153:
2154: # --------------------- delete for items in db file owned by domainconfig user
2155: sub del_dom {
2156: my ($namespace,$storearr,$udom)=@_;
2157: if (ref($storearr) eq 'ARRAY') {
2158: if (!$udom) {
2159: $udom=$env{'user.domain'};
2160: }
2161: if ($udom) {
2162: my $uname = &get_domainconfiguser($udom);
2163: return &del($namespace,$storearr,$udom,$uname);
2164: }
2165: }
2166: }
2167:
2168: # ----------------------------------construct domainconfig user for a domain
2169: sub get_domainconfiguser {
2170: my ($udom) = @_;
2171: return $udom.'-domainconfig';
2172: }
2173:
2174: sub retrieve_inst_usertypes {
2175: my ($udom) = @_;
2176: my (%returnhash,@order);
2177: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2178: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2179: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2180: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2181: } else {
2182: if (defined(&domain($udom,'primary'))) {
2183: my $uhome=&domain($udom,'primary');
2184: my $rep=&reply("inst_usertypes:$udom",$uhome);
2185: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2186: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2187: return (\%returnhash,\@order);
2188: }
2189: my ($hashitems,$orderitems) = split(/:/,$rep);
2190: my @pairs=split(/\&/,$hashitems);
2191: foreach my $item (@pairs) {
2192: my ($key,$value)=split(/=/,$item,2);
2193: $key = &unescape($key);
2194: next if ($key =~ /^error: 2 /);
2195: $returnhash{$key}=&thaw_unescape($value);
2196: }
2197: my @esc_order = split(/\&/,$orderitems);
2198: foreach my $item (@esc_order) {
2199: push(@order,&unescape($item));
2200: }
2201: } else {
2202: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2203: }
2204: return (\%returnhash,\@order);
2205: }
2206: }
2207:
2208: sub is_domainimage {
2209: my ($url) = @_;
2210: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2211: if (&domain($1) ne '') {
2212: return '1';
2213: }
2214: }
2215: return;
2216: }
2217:
2218: sub inst_directory_query {
2219: my ($srch) = @_;
2220: my $udom = $srch->{'srchdomain'};
2221: my %results;
2222: my $homeserver = &domain($udom,'primary');
2223: my $outcome;
2224: if ($homeserver ne '') {
2225: unless ($homeserver eq $perlvar{'lonHostID'}) {
2226: if ($srch->{'srchby'} eq 'email') {
2227: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2228: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2229: if (($major eq '' && $minor eq '') || ($major < 2) ||
2230: (($major == 2) && ($minor < 12))) {
2231: return;
2232: }
2233: }
2234: }
2235: my $queryid=&reply("querysend:instdirsearch:".
2236: &escape($srch->{'srchby'}).':'.
2237: &escape($srch->{'srchterm'}).':'.
2238: &escape($srch->{'srchtype'}),$homeserver);
2239: my $host=&hostname($homeserver);
2240: if ($queryid !~/^\Q$host\E\_/) {
2241: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2242: return;
2243: }
2244: my $response = &get_query_reply($queryid);
2245: my $maxtries = 5;
2246: my $tries = 1;
2247: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2248: $response = &get_query_reply($queryid);
2249: $tries ++;
2250: }
2251:
2252: if (!&error($response) && $response ne 'refused') {
2253: if ($response eq 'unavailable') {
2254: $outcome = $response;
2255: } else {
2256: $outcome = 'ok';
2257: my @matches = split(/\n/,$response);
2258: foreach my $match (@matches) {
2259: my ($key,$value) = split(/=/,$match);
2260: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2261: }
2262: }
2263: }
2264: }
2265: return ($outcome,%results);
2266: }
2267:
2268: sub usersearch {
2269: my ($srch) = @_;
2270: my $dom = $srch->{'srchdomain'};
2271: my %results;
2272: my %libserv = &all_library();
2273: my $query = 'usersearch';
2274: foreach my $tryserver (keys(%libserv)) {
2275: if (&host_domain($tryserver) eq $dom) {
2276: unless ($tryserver eq $perlvar{'lonHostID'}) {
2277: if ($srch->{'srchby'} eq 'email') {
2278: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2279: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2280: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2281: (($major == 2) && ($minor < 12)));
2282: }
2283: }
2284: my $host=&hostname($tryserver);
2285: my $queryid=
2286: &reply("querysend:".&escape($query).':'.
2287: &escape($srch->{'srchby'}).':'.
2288: &escape($srch->{'srchtype'}).':'.
2289: &escape($srch->{'srchterm'}),$tryserver);
2290: if ($queryid !~/^\Q$host\E\_/) {
2291: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2292: next;
2293: }
2294: my $reply = &get_query_reply($queryid);
2295: my $maxtries = 1;
2296: my $tries = 1;
2297: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2298: $reply = &get_query_reply($queryid);
2299: $tries ++;
2300: }
2301: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2302: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2303: } else {
2304: my @matches;
2305: if ($reply =~ /\n/) {
2306: @matches = split(/\n/,$reply);
2307: } else {
2308: @matches = split(/\&/,$reply);
2309: }
2310: foreach my $match (@matches) {
2311: my ($uname,$udom,%userhash);
2312: foreach my $entry (split(/:/,$match)) {
2313: my ($key,$value) =
2314: map {&unescape($_);} split(/=/,$entry);
2315: $userhash{$key} = $value;
2316: if ($key eq 'username') {
2317: $uname = $value;
2318: } elsif ($key eq 'domain') {
2319: $udom = $value;
2320: }
2321: }
2322: $results{$uname.':'.$udom} = \%userhash;
2323: }
2324: }
2325: }
2326: }
2327: return %results;
2328: }
2329:
2330: sub get_instuser {
2331: my ($udom,$uname,$id) = @_;
2332: my $homeserver = &domain($udom,'primary');
2333: my ($outcome,%results);
2334: if ($homeserver ne '') {
2335: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2336: &escape($id).':'.&escape($udom),$homeserver);
2337: my $host=&hostname($homeserver);
2338: if ($queryid !~/^\Q$host\E\_/) {
2339: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2340: return;
2341: }
2342: my $response = &get_query_reply($queryid);
2343: my $maxtries = 5;
2344: my $tries = 1;
2345: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2346: $response = &get_query_reply($queryid);
2347: $tries ++;
2348: }
2349: if (!&error($response) && $response ne 'refused') {
2350: if ($response eq 'unavailable') {
2351: $outcome = $response;
2352: } else {
2353: $outcome = 'ok';
2354: my @matches = split(/\n/,$response);
2355: foreach my $match (@matches) {
2356: my ($key,$value) = split(/=/,$match);
2357: $results{&unescape($key)} = &thaw_unescape($value);
2358: }
2359: }
2360: }
2361: }
2362: my %userinfo;
2363: if (ref($results{$uname}) eq 'HASH') {
2364: %userinfo = %{$results{$uname}};
2365: }
2366: return ($outcome,%userinfo);
2367: }
2368:
2369: sub get_multiple_instusers {
2370: my ($udom,$users,$caller) = @_;
2371: my ($outcome,$results);
2372: if (ref($users) eq 'HASH') {
2373: my $count = keys(%{$users});
2374: my $requested = &freeze_escape($users);
2375: my $homeserver = &domain($udom,'primary');
2376: if ($homeserver ne '') {
2377: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2378: my $host=&hostname($homeserver);
2379: if ($queryid !~/^\Q$host\E\_/) {
2380: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2381: ' for host: '.$homeserver.'in domain '.$udom);
2382: return ($outcome,$results);
2383: }
2384: my $response = &get_query_reply($queryid);
2385: my $maxtries = 5;
2386: if ($count > 100) {
2387: $maxtries = 1+int($count/20);
2388: }
2389: my $tries = 1;
2390: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2391: $response = &get_query_reply($queryid);
2392: $tries ++;
2393: }
2394: if ($response eq '') {
2395: $results = {};
2396: foreach my $key (keys(%{$users})) {
2397: my ($uname,$id);
2398: if ($caller eq 'id') {
2399: $id = $key;
2400: } else {
2401: $uname = $key;
2402: }
2403: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2404: $outcome = $resp;
2405: if ($resp eq 'ok') {
2406: %{$results} = (%{$results}, %info);
2407: } else {
2408: last;
2409: }
2410: }
2411: } elsif(!&error($response) && ($response ne 'refused')) {
2412: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2413: $outcome = $response;
2414: } else {
2415: ($outcome,my $userdata) = split(/=/,$response,2);
2416: if ($outcome eq 'ok') {
2417: $results = &thaw_unescape($userdata);
2418: }
2419: }
2420: }
2421: }
2422: }
2423: return ($outcome,$results);
2424: }
2425:
2426: sub inst_rulecheck {
2427: my ($udom,$uname,$id,$item,$rules) = @_;
2428: my %returnhash;
2429: if ($udom ne '') {
2430: if (ref($rules) eq 'ARRAY') {
2431: @{$rules} = map {&escape($_);} (@{$rules});
2432: my $rulestr = join(':',@{$rules});
2433: my $homeserver=&domain($udom,'primary');
2434: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2435: my $response;
2436: if ($item eq 'username') {
2437: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2438: ':'.&escape($uname).':'.$rulestr,
2439: $homeserver));
2440: } elsif ($item eq 'id') {
2441: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2442: ':'.&escape($id).':'.$rulestr,
2443: $homeserver));
2444: } elsif ($item eq 'selfcreate') {
2445: $response=&unescape(&reply('instselfcreatecheck:'.
2446: &escape($udom).':'.&escape($uname).
2447: ':'.$rulestr,$homeserver));
2448: }
2449: if ($response ne 'refused') {
2450: my @pairs=split(/\&/,$response);
2451: foreach my $item (@pairs) {
2452: my ($key,$value)=split(/=/,$item,2);
2453: $key = &unescape($key);
2454: next if ($key =~ /^error: 2 /);
2455: $returnhash{$key}=&thaw_unescape($value);
2456: }
2457: }
2458: }
2459: }
2460: }
2461: return %returnhash;
2462: }
2463:
2464: sub inst_userrules {
2465: my ($udom,$check) = @_;
2466: my (%ruleshash,@ruleorder);
2467: if ($udom ne '') {
2468: my $homeserver=&domain($udom,'primary');
2469: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2470: my $response;
2471: if ($check eq 'id') {
2472: $response=&reply('instidrules:'.&escape($udom),
2473: $homeserver);
2474: } elsif ($check eq 'email') {
2475: $response=&reply('instemailrules:'.&escape($udom),
2476: $homeserver);
2477: } else {
2478: $response=&reply('instuserrules:'.&escape($udom),
2479: $homeserver);
2480: }
2481: if (($response ne 'refused') && ($response ne 'error') &&
2482: ($response ne 'unknown_cmd') &&
2483: ($response ne 'no_such_host')) {
2484: my ($hashitems,$orderitems) = split(/:/,$response);
2485: my @pairs=split(/\&/,$hashitems);
2486: foreach my $item (@pairs) {
2487: my ($key,$value)=split(/=/,$item,2);
2488: $key = &unescape($key);
2489: next if ($key =~ /^error: 2 /);
2490: $ruleshash{$key}=&thaw_unescape($value);
2491: }
2492: my @esc_order = split(/\&/,$orderitems);
2493: foreach my $item (@esc_order) {
2494: push(@ruleorder,&unescape($item));
2495: }
2496: }
2497: }
2498: }
2499: return (\%ruleshash,\@ruleorder);
2500: }
2501:
2502: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2503:
2504: sub get_domain_defaults {
2505: my ($domain,$ignore_cache) = @_;
2506: return if (($domain eq '') || ($domain eq 'public'));
2507: my $cachetime = 60*60*24;
2508: unless ($ignore_cache) {
2509: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2510: if (defined($cached)) {
2511: if (ref($result) eq 'HASH') {
2512: return %{$result};
2513: }
2514: }
2515: }
2516: my %domdefaults;
2517: my %domconfig =
2518: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2519: 'requestcourses','inststatus',
2520: 'coursedefaults','usersessions',
2521: 'requestauthor','selfenrollment',
2522: 'coursecategories','ssl','autoenroll',
2523: 'trust','helpsettings'],$domain);
2524: my @coursetypes = ('official','unofficial','community','textbook','placement');
2525: if (ref($domconfig{'defaults'}) eq 'HASH') {
2526: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2527: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2528: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2529: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2530: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2531: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2532: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2533: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2534: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2535: } else {
2536: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2537: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2538: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2539: }
2540: if (ref($domconfig{'quotas'}) eq 'HASH') {
2541: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2542: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2543: } else {
2544: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2545: }
2546: my @usertools = ('aboutme','blog','webdav','portfolio');
2547: foreach my $item (@usertools) {
2548: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2549: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2550: }
2551: }
2552: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2553: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2554: }
2555: }
2556: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2557: foreach my $item ('official','unofficial','community','textbook','placement') {
2558: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2559: }
2560: }
2561: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2562: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2563: }
2564: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2565: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2566: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2567: }
2568: }
2569: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2570: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2571: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2572: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2573: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2574: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2575: }
2576: foreach my $type (@coursetypes) {
2577: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2578: unless ($type eq 'community') {
2579: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2580: }
2581: }
2582: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2583: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2584: }
2585: if ($domdefaults{'postsubmit'} eq 'on') {
2586: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2587: $domdefaults{$type.'postsubtimeout'} =
2588: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2589: }
2590: }
2591: }
2592: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2593: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2594: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2595: if (@clonecodes) {
2596: $domdefaults{'canclone'} = join('+',@clonecodes);
2597: }
2598: }
2599: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2600: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2601: }
2602: if ($domconfig{'coursedefaults'}{'texengine'}) {
2603: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2604: }
2605: }
2606: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2607: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2608: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2609: }
2610: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2611: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2612: }
2613: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2614: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2615: }
2616: }
2617: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2618: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2619: my @settings = ('types','registered','enroll_dates','access_dates','section',
2620: 'approval','limit');
2621: foreach my $type (@coursetypes) {
2622: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2623: my @mgrdc = ();
2624: foreach my $item (@settings) {
2625: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2626: push(@mgrdc,$item);
2627: }
2628: }
2629: if (@mgrdc) {
2630: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2631: }
2632: }
2633: }
2634: }
2635: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2636: foreach my $type (@coursetypes) {
2637: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2638: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2639: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2640: }
2641: }
2642: }
2643: }
2644: }
2645: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2646: $domdefaults{'catauth'} = 'std';
2647: $domdefaults{'catunauth'} = 'std';
2648: if ($domconfig{'coursecategories'}{'auth'}) {
2649: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2650: }
2651: if ($domconfig{'coursecategories'}{'unauth'}) {
2652: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2653: }
2654: }
2655: if (ref($domconfig{'ssl'}) eq 'HASH') {
2656: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2657: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2658: }
2659: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2660: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2661: }
2662: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2663: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2664: }
2665: }
2666: if (ref($domconfig{'trust'}) eq 'HASH') {
2667: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2668: foreach my $prefix (@prefixes) {
2669: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2670: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2671: }
2672: }
2673: }
2674: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2675: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2676: }
2677: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2678: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2679: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2680: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2681: }
2682: }
2683: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2684: return %domdefaults;
2685: }
2686:
2687: sub course_portal_url {
2688: my ($cnum,$cdom) = @_;
2689: my $chome = &homeserver($cnum,$cdom);
2690: my $hostname = &hostname($chome);
2691: my $protocol = $protocol{$chome};
2692: $protocol = 'http' if ($protocol ne 'https');
2693: my %domdefaults = &get_domain_defaults($cdom);
2694: my $firsturl;
2695: if ($domdefaults{'portal_def'}) {
2696: $firsturl = $domdefaults{'portal_def'};
2697: } else {
2698: $firsturl = $protocol.'://'.$hostname;
2699: }
2700: return $firsturl;
2701: }
2702:
2703: # --------------------------------------------------- Assign a key to a student
2704:
2705: sub assign_access_key {
2706: #
2707: # a valid key looks like uname:udom#comments
2708: # comments are being appended
2709: #
2710: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2711: $kdom=
2712: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2713: $knum=
2714: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2715: $cdom=
2716: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2717: $cnum=
2718: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2719: $udom=$env{'user.name'} unless (defined($udom));
2720: $uname=$env{'user.domain'} unless (defined($uname));
2721: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2722: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2723: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2724: # assigned to this person
2725: # - this should not happen,
2726: # unless something went wrong
2727: # the first time around
2728: # ready to assign
2729: $logentry=$1.'; '.$logentry;
2730: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2731: $kdom,$knum) eq 'ok') {
2732: # key now belongs to user
2733: my $envkey='key.'.$cdom.'_'.$cnum;
2734: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2735: &appenv({'environment.'.$envkey => $ckey});
2736: return 'ok';
2737: } else {
2738: return
2739: 'error: Count not permanently assign key, will need to be re-entered later.';
2740: }
2741: } else {
2742: return 'error: Could not assign key, try again later.';
2743: }
2744: } elsif (!$existing{$ckey}) {
2745: # the key does not exist
2746: return 'error: The key does not exist';
2747: } else {
2748: # the key is somebody else's
2749: return 'error: The key is already in use';
2750: }
2751: }
2752:
2753: # ------------------------------------------ put an additional comment on a key
2754:
2755: sub comment_access_key {
2756: #
2757: # a valid key looks like uname:udom#comments
2758: # comments are being appended
2759: #
2760: my ($ckey,$cdom,$cnum,$logentry)=@_;
2761: $cdom=
2762: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2763: $cnum=
2764: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2765: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2766: if ($existing{$ckey}) {
2767: $existing{$ckey}.='; '.$logentry;
2768: # ready to assign
2769: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2770: $cdom,$cnum) eq 'ok') {
2771: return 'ok';
2772: } else {
2773: return 'error: Count not store comment.';
2774: }
2775: } else {
2776: # the key does not exist
2777: return 'error: The key does not exist';
2778: }
2779: }
2780:
2781: # ------------------------------------------------------ Generate a set of keys
2782:
2783: sub generate_access_keys {
2784: my ($number,$cdom,$cnum,$logentry)=@_;
2785: $cdom=
2786: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2787: $cnum=
2788: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2789: unless (&allowed('mky',$cdom)) { return 0; }
2790: unless (($cdom) && ($cnum)) { return 0; }
2791: if ($number>10000) { return 0; }
2792: sleep(2); # make sure don't get same seed twice
2793: srand(time()^($$+($$<<15))); # from "Programming Perl"
2794: my $total=0;
2795: for (my $i=1;$i<=$number;$i++) {
2796: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2797: sprintf("%lx",int(100000*rand)).'-'.
2798: sprintf("%lx",int(100000*rand));
2799: $newkey=~s/1/g/g; # folks mix up 1 and l
2800: $newkey=~s/0/h/g; # and also 0 and O
2801: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2802: if ($existing{$newkey}) {
2803: $i--;
2804: } else {
2805: if (&put('accesskeys',
2806: { $newkey => '# generated '.localtime().
2807: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2808: '; '.$logentry },
2809: $cdom,$cnum) eq 'ok') {
2810: $total++;
2811: }
2812: }
2813: }
2814: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2815: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2816: return $total;
2817: }
2818:
2819: # ------------------------------------------------------- Validate an accesskey
2820:
2821: sub validate_access_key {
2822: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2823: $cdom=
2824: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2825: $cnum=
2826: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2827: $udom=$env{'user.domain'} unless (defined($udom));
2828: $uname=$env{'user.name'} unless (defined($uname));
2829: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2830: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2831: }
2832:
2833: # ------------------------------------- Find the section of student in a course
2834: sub devalidate_getsection_cache {
2835: my ($udom,$unam,$courseid)=@_;
2836: my $hashid="$udom:$unam:$courseid";
2837: &devalidate_cache_new('getsection',$hashid);
2838: }
2839:
2840: sub courseid_to_courseurl {
2841: my ($courseid) = @_;
2842: #already url style courseid
2843: return $courseid if ($courseid =~ m{^/});
2844:
2845: if (exists($env{'course.'.$courseid.'.num'})) {
2846: my $cnum = $env{'course.'.$courseid.'.num'};
2847: my $cdom = $env{'course.'.$courseid.'.domain'};
2848: return "/$cdom/$cnum";
2849: }
2850:
2851: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2852: if (exists($courseinfo{'num'})) {
2853: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2854: }
2855:
2856: return undef;
2857: }
2858:
2859: sub getsection {
2860: my ($udom,$unam,$courseid)=@_;
2861: my $cachetime=1800;
2862:
2863: my $hashid="$udom:$unam:$courseid";
2864: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2865: if (defined($cached)) { return $result; }
2866:
2867: my %Pending;
2868: my %Expired;
2869: #
2870: # Each role can either have not started yet (pending), be active,
2871: # or have expired.
2872: #
2873: # If there is an active role, we are done.
2874: #
2875: # If there is more than one role which has not started yet,
2876: # choose the one which will start sooner
2877: # If there is one role which has not started yet, return it.
2878: #
2879: # If there is more than one expired role, choose the one which ended last.
2880: # If there is a role which has expired, return it.
2881: #
2882: $courseid = &courseid_to_courseurl($courseid);
2883: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2884: foreach my $key (keys(%roleshash)) {
2885: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2886: my $section=$1;
2887: if ($key eq $courseid.'_st') { $section=''; }
2888: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2889: my $now=time;
2890: if (defined($end) && $end && ($now > $end)) {
2891: $Expired{$end}=$section;
2892: next;
2893: }
2894: if (defined($start) && $start && ($now < $start)) {
2895: $Pending{$start}=$section;
2896: next;
2897: }
2898: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2899: }
2900: #
2901: # Presumedly there will be few matching roles from the above
2902: # loop and the sorting time will be negligible.
2903: if (scalar(keys(%Pending))) {
2904: my ($time) = sort {$a <=> $b} keys(%Pending);
2905: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2906: }
2907: if (scalar(keys(%Expired))) {
2908: my @sorted = sort {$a <=> $b} keys(%Expired);
2909: my $time = pop(@sorted);
2910: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2911: }
2912: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2913: }
2914:
2915: sub save_cache {
2916: &purge_remembered();
2917: #&Apache::loncommon::validate_page();
2918: undef(%env);
2919: undef($env_loaded);
2920: }
2921:
2922: my $to_remember=-1;
2923: my %remembered;
2924: my %accessed;
2925: my $kicks=0;
2926: my $hits=0;
2927: sub make_key {
2928: my ($name,$id) = @_;
2929: if (length($id) > 65
2930: && length(&escape($id)) > 200) {
2931: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2932: }
2933: return &escape($name.':'.$id);
2934: }
2935:
2936: sub devalidate_cache_new {
2937: my ($name,$id,$debug) = @_;
2938: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2939: my $remembered_id=$name.':'.$id;
2940: $id=&make_key($name,$id);
2941: $memcache->delete($id);
2942: delete($remembered{$remembered_id});
2943: delete($accessed{$remembered_id});
2944: }
2945:
2946: sub is_cached_new {
2947: my ($name,$id,$debug) = @_;
2948: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2949: if (exists($remembered{$remembered_id})) {
2950: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2951: $accessed{$remembered_id}=[&gettimeofday()];
2952: $hits++;
2953: return ($remembered{$remembered_id},1);
2954: }
2955: $id=&make_key($name,$id);
2956: my $value = $memcache->get($id);
2957: if (!(defined($value))) {
2958: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2959: return (undef,undef);
2960: }
2961: if ($value eq '__undef__') {
2962: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2963: $value=undef;
2964: }
2965: &make_room($remembered_id,$value,$debug);
2966: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2967: return ($value,1);
2968: }
2969:
2970: sub do_cache_new {
2971: my ($name,$id,$value,$time,$debug) = @_;
2972: my $remembered_id=$name.':'.$id;
2973: $id=&make_key($name,$id);
2974: my $setvalue=$value;
2975: if (!defined($setvalue)) {
2976: $setvalue='__undef__';
2977: }
2978: if (!defined($time) ) {
2979: $time=600;
2980: }
2981: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2982: my $result = $memcache->set($id,$setvalue,$time);
2983: if (! $result) {
2984: &logthis("caching of id -> $id failed");
2985: $memcache->disconnect_all();
2986: }
2987: # need to make a copy of $value
2988: &make_room($remembered_id,$value,$debug);
2989: return $value;
2990: }
2991:
2992: sub make_room {
2993: my ($remembered_id,$value,$debug)=@_;
2994:
2995: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2996: : $value;
2997: if ($to_remember<0) { return; }
2998: $accessed{$remembered_id}=[&gettimeofday()];
2999: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3000: my $to_kick;
3001: my $max_time=0;
3002: foreach my $other (keys(%accessed)) {
3003: if (&tv_interval($accessed{$other}) > $max_time) {
3004: $to_kick=$other;
3005: $max_time=&tv_interval($accessed{$other});
3006: }
3007: }
3008: delete($remembered{$to_kick});
3009: delete($accessed{$to_kick});
3010: $kicks++;
3011: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3012: return;
3013: }
3014:
3015: sub purge_remembered {
3016: #&logthis("Tossing ".scalar(keys(%remembered)));
3017: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3018: undef(%remembered);
3019: undef(%accessed);
3020: }
3021: # ------------------------------------- Read an entry from a user's environment
3022:
3023: sub userenvironment {
3024: my ($udom,$unam,@what)=@_;
3025: my $items;
3026: foreach my $item (@what) {
3027: $items.=&escape($item).'&';
3028: }
3029: $items=~s/\&$//;
3030: my %returnhash=();
3031: my $uhome = &homeserver($unam,$udom);
3032: unless ($uhome eq 'no_host') {
3033: my @answer=split(/\&/,
3034: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3035: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3036: return %returnhash;
3037: }
3038: my $i;
3039: for ($i=0;$i<=$#what;$i++) {
3040: $returnhash{$what[$i]}=&unescape($answer[$i]);
3041: }
3042: }
3043: return %returnhash;
3044: }
3045:
3046: # ---------------------------------------------------------- Get a studentphoto
3047: sub studentphoto {
3048: my ($udom,$unam,$ext) = @_;
3049: my $home=&Apache::lonnet::homeserver($unam,$udom);
3050: if (defined($env{'request.course.id'})) {
3051: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3052: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3053: return(&retrievestudentphoto($udom,$unam,$ext));
3054: } else {
3055: my ($result,$perm_reqd)=
3056: &Apache::lonnet::auto_photo_permission($unam,$udom);
3057: if ($result eq 'ok') {
3058: if (!($perm_reqd eq 'yes')) {
3059: return(&retrievestudentphoto($udom,$unam,$ext));
3060: }
3061: }
3062: }
3063: }
3064: } else {
3065: my ($result,$perm_reqd) =
3066: &Apache::lonnet::auto_photo_permission($unam,$udom);
3067: if ($result eq 'ok') {
3068: if (!($perm_reqd eq 'yes')) {
3069: return(&retrievestudentphoto($udom,$unam,$ext));
3070: }
3071: }
3072: }
3073: return '/adm/lonKaputt/lonlogo_broken.gif';
3074: }
3075:
3076: sub retrievestudentphoto {
3077: my ($udom,$unam,$ext,$type) = @_;
3078: my $home=&Apache::lonnet::homeserver($unam,$udom);
3079: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3080: if ($ret eq 'ok') {
3081: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3082: if ($type eq 'thumbnail') {
3083: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3084: }
3085: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3086: return $tokenurl;
3087: } else {
3088: if ($type eq 'thumbnail') {
3089: return '/adm/lonKaputt/genericstudent_tn.gif';
3090: } else {
3091: return '/adm/lonKaputt/lonlogo_broken.gif';
3092: }
3093: }
3094: }
3095:
3096: # -------------------------------------------------------------------- New chat
3097:
3098: sub chatsend {
3099: my ($newentry,$anon,$group)=@_;
3100: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3101: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3102: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3103: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3104: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3105: &escape($newentry)).':'.$group,$chome);
3106: }
3107:
3108: # ------------------------------------------ Find current version of a resource
3109:
3110: sub getversion {
3111: my $fname=&clutter(shift);
3112: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3113: return ¤tversion(&filelocation('',$fname));
3114: }
3115:
3116: sub currentversion {
3117: my $fname=shift;
3118: my $author=$fname;
3119: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3120: my ($udom,$uname)=split(/\//,$author);
3121: my $home=&homeserver($uname,$udom);
3122: if ($home eq 'no_host') {
3123: return -1;
3124: }
3125: my $answer=&reply("currentversion:$fname",$home);
3126: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3127: return -1;
3128: }
3129: return $answer;
3130: }
3131:
3132: #
3133: # Return special version number of resource if set by override, empty otherwise
3134: #
3135: sub usedversion {
3136: my $fname=shift;
3137: unless ($fname) { $fname=$env{'request.uri'}; }
3138: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3139: if ($urlversion) { return $urlversion; }
3140: return '';
3141: }
3142:
3143: # ----------------------------- Subscribe to a resource, return URL if possible
3144:
3145: sub subscribe {
3146: my $fname=shift;
3147: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3148: $fname=~s/[\n\r]//g;
3149: my $author=$fname;
3150: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3151: my ($udom,$uname)=split(/\//,$author);
3152: my $home=homeserver($uname,$udom);
3153: if ($home eq 'no_host') {
3154: return 'not_found';
3155: }
3156: my $answer=reply("sub:$fname",$home);
3157: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3158: $answer.=' by '.$home;
3159: }
3160: return $answer;
3161: }
3162:
3163: # -------------------------------------------------------------- Replicate file
3164:
3165: sub repcopy {
3166: my $filename=shift;
3167: $filename=~s/\/+/\//g;
3168: my $londocroot = $perlvar{'lonDocRoot'};
3169: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3170: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3171: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3172: $filename=~m{^/*(uploaded|editupload)/}) {
3173: return &repcopy_userfile($filename);
3174: }
3175: $filename=~s/[\n\r]//g;
3176: my $transname="$filename.in.transfer";
3177: # FIXME: this should flock
3178: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3179: my $remoteurl=subscribe($filename);
3180: if ($remoteurl =~ /^con_lost by/) {
3181: &logthis("Subscribe returned $remoteurl: $filename");
3182: return 'unavailable';
3183: } elsif ($remoteurl eq 'not_found') {
3184: #&logthis("Subscribe returned not_found: $filename");
3185: return 'not_found';
3186: } elsif ($remoteurl =~ /^rejected by/) {
3187: &logthis("Subscribe returned $remoteurl: $filename");
3188: return 'forbidden';
3189: } elsif ($remoteurl eq 'directory') {
3190: return 'ok';
3191: } else {
3192: my $author=$filename;
3193: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3194: my ($udom,$uname)=split(/\//,$author);
3195: my $home=homeserver($uname,$udom);
3196: unless ($home eq $perlvar{'lonHostID'}) {
3197: my @parts=split(/\//,$filename);
3198: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3199: if ($path ne "$londocroot/res") {
3200: &logthis("Malconfiguration for replication: $filename");
3201: return 'bad_request';
3202: }
3203: my $count;
3204: for ($count=5;$count<$#parts;$count++) {
3205: $path.="/$parts[$count]";
3206: if ((-e $path)!=1) {
3207: mkdir($path,0777);
3208: }
3209: }
3210: my $request=new HTTP::Request('GET',"$remoteurl");
3211: my $response;
3212: if ($remoteurl =~ m{/raw/}) {
3213: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3214: } else {
3215: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3216: }
3217: if ($response->is_error()) {
3218: unlink($transname);
3219: my $message=$response->status_line;
3220: &logthis("<font color=\"blue\">WARNING:"
3221: ." LWP get: $message: $filename</font>");
3222: return 'unavailable';
3223: } else {
3224: if ($remoteurl!~/\.meta$/) {
3225: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3226: my $mresponse;
3227: if ($remoteurl =~ m{/raw/}) {
3228: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3229: } else {
3230: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3231: }
3232: if ($mresponse->is_error()) {
3233: unlink($filename.'.meta');
3234: &logthis(
3235: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3236: }
3237: }
3238: rename($transname,$filename);
3239: return 'ok';
3240: }
3241: }
3242: }
3243: }
3244:
3245: # ------------------------------------------------ Get server side include body
3246: sub ssi_body {
3247: my ($filelink,%form)=@_;
3248: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3249: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3250: }
3251: my $output='';
3252: my $response;
3253: if ($filelink=~/^https?\:/) {
3254: ($output,$response)=&externalssi($filelink);
3255: } else {
3256: $filelink .= $filelink=~/\?/ ? '&' : '?';
3257: $filelink .= 'inhibitmenu=yes';
3258: ($output,$response)=&ssi($filelink,%form);
3259: }
3260: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3261: $output=~s/^.*?\<body[^\>]*\>//si;
3262: $output=~s/\<\/body\s*\>.*?$//si;
3263: if (wantarray) {
3264: return ($output, $response);
3265: } else {
3266: return $output;
3267: }
3268: }
3269:
3270: # --------------------------------------------------------- Server Side Include
3271:
3272: sub absolute_url {
3273: my ($host_name) = @_;
3274: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3275: if ($host_name eq '') {
3276: $host_name = $ENV{'SERVER_NAME'};
3277: }
3278: return $protocol.$host_name;
3279: }
3280:
3281: #
3282: # Server side include.
3283: # Parameters:
3284: # fn Possibly encrypted resource name/id.
3285: # form Hash that describes how the rendering should be done
3286: # and other things.
3287: # Returns:
3288: # Scalar context: The content of the response.
3289: # Array context: 2 element list of the content and the full response object.
3290: #
3291: sub ssi {
3292:
3293: my ($fn,%form)=@_;
3294: my $request;
3295:
3296: $form{'no_update_last_known'}=1;
3297: &Apache::lonenc::check_encrypt(\$fn);
3298: if (%form) {
3299: $request=new HTTP::Request('POST',&absolute_url().$fn);
3300: $request->content(join('&',map {
3301: my $name = escape($_);
3302: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3303: ? join("&$name=", map {escape($_) } @{$form{$_}})
3304: : &escape($form{$_}) );
3305: } keys(%form)));
3306: } else {
3307: $request=new HTTP::Request('GET',&absolute_url().$fn);
3308: }
3309:
3310: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3311: my $lonhost = $perlvar{'lonHostID'};
3312: my $islocal;
3313: if (($env{'request.course.id'}) &&
3314: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3315: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3316: ($form{'grade_symb'} ne '') &&
3317: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3318: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3319: $islocal = 1;
3320: }
3321: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3322: '','','',$islocal);
3323:
3324: if (wantarray) {
3325: return ($response->content, $response);
3326: } else {
3327: return $response->content;
3328: }
3329: }
3330:
3331: sub externalssi {
3332: my ($url)=@_;
3333: my $request=new HTTP::Request('GET',$url);
3334: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3335: if (wantarray) {
3336: return ($response->content, $response);
3337: } else {
3338: return $response->content;
3339: }
3340: }
3341:
3342:
3343: # If the local copy of a replicated resource is outdated, trigger a
3344: # connection from the homeserver to flush the delayed queue. If no update
3345: # happens, remove local copies of outdated resource (and corresponding
3346: # metadata file).
3347:
3348: sub remove_stale_resfile {
3349: my ($url) = @_;
3350: my $removed;
3351: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3352: my $audom = $1;
3353: my $auname = $2;
3354: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3355: my $homeserver = &homeserver($auname,$audom);
3356: unless (($homeserver eq 'no_host') ||
3357: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3358: my $fname = &filelocation('',$url);
3359: if (-e $fname) {
3360: my $protocol = $protocol{$homeserver};
3361: $protocol = 'http' if ($protocol ne 'https');
3362: my $hostname = &hostname($homeserver);
3363: if ($hostname) {
3364: my $uri = &declutter($url);
3365: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3366: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3367: if ($response->is_success()) {
3368: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3369: my $locmodtime = (stat($fname))[9];
3370: if ($locmodtime < $remmodtime) {
3371: my $stale;
3372: my $answer = &reply('pong',$homeserver);
3373: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3374: sleep(0.2);
3375: $locmodtime = (stat($fname))[9];
3376: if ($locmodtime < $remmodtime) {
3377: my $posstransfer = $fname.'.in.transfer';
3378: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3379: $removed = 1;
3380: } else {
3381: $stale = 1;
3382: }
3383: } else {
3384: $removed = 1;
3385: }
3386: } else {
3387: $stale = 1;
3388: }
3389: if ($stale) {
3390: unlink($fname);
3391: if ($uri!~/\.meta$/) {
3392: unlink($fname.'.meta');
3393: }
3394: &reply("unsub:$fname",$homeserver);
3395: $removed = 1;
3396: }
3397: }
3398: }
3399: }
3400: }
3401: }
3402: }
3403: }
3404: return $removed;
3405: }
3406:
3407: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3408:
3409: sub allowuploaded {
3410: my ($srcurl,$url)=@_;
3411: $url=&clutter(&declutter($url));
3412: my $dir=$url;
3413: $dir=~s/\/[^\/]+$//;
3414: my %httpref=();
3415: my $httpurl=&hreflocation('',$url);
3416: $httpref{'httpref.'.$httpurl}=$srcurl;
3417: &Apache::lonnet::appenv(\%httpref);
3418: }
3419:
3420: #
3421: # Determine if the current user should be able to edit a particular resource,
3422: # when viewing in course context.
3423: # (a) When viewing resource used to determine if "Edit" item is included in
3424: # Functions.
3425: # (b) When displaying folder contents in course editor, used to determine if
3426: # "Edit" link will be displayed alongside resource.
3427: #
3428: # input: six args -- filename (decluttered), course number, course domain,
3429: # url, symb (if registered) and group (if this is a group
3430: # item -- e.g., bulletin board, group page etc.).
3431: # output: array of five scalars --
3432: # $cfile -- url for file editing if editable on current server
3433: # $home -- homeserver of resource (i.e., for author if published,
3434: # or course if uploaded.).
3435: # $switchserver -- 1 if server switch will be needed.
3436: # $forceedit -- 1 if icon/link should be to go to edit mode
3437: # $forceview -- 1 if icon/link should be to go to view mode
3438: #
3439:
3440: sub can_edit_resource {
3441: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3442: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3443: #
3444: # For aboutme pages user can only edit his/her own.
3445: #
3446: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3447: my ($sdom,$sname) = ($1,$2);
3448: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3449: $home = $env{'user.home'};
3450: $cfile = $resurl;
3451: if ($env{'form.forceedit'}) {
3452: $forceview = 1;
3453: } else {
3454: $forceedit = 1;
3455: }
3456: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3457: } else {
3458: return;
3459: }
3460: }
3461:
3462: if ($env{'request.course.id'}) {
3463: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3464: if ($group ne '') {
3465: # if this is a group homepage or group bulletin board, check group privs
3466: my $allowed = 0;
3467: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3468: if ((&allowed('mdg',$env{'request.course.id'}.
3469: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3470: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3471: $allowed = 1;
3472: }
3473: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3474: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3475: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3476: $allowed = 1;
3477: }
3478: }
3479: if ($allowed) {
3480: $home=&homeserver($cnum,$cdom);
3481: if ($env{'form.forceedit'}) {
3482: $forceview = 1;
3483: } else {
3484: $forceedit = 1;
3485: }
3486: $cfile = $resurl;
3487: } else {
3488: return;
3489: }
3490: } else {
3491: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3492: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3493: return;
3494: }
3495: } elsif (!$crsedit) {
3496: #
3497: # No edit allowed where CC has switched to student role.
3498: #
3499: return;
3500: }
3501: }
3502: }
3503:
3504: if ($file ne '') {
3505: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3506: if (&is_course_upload($file,$cnum,$cdom)) {
3507: $uploaded = 1;
3508: $incourse = 1;
3509: if ($file =~/\.(htm|html|css|js|txt)$/) {
3510: $cfile = &hreflocation('',$file);
3511: if ($env{'form.forceedit'}) {
3512: $forceview = 1;
3513: } else {
3514: $forceedit = 1;
3515: }
3516: }
3517: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3518: $incourse = 1;
3519: if ($env{'form.forceedit'}) {
3520: $forceview = 1;
3521: } else {
3522: $forceedit = 1;
3523: }
3524: $cfile = $resurl;
3525: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3526: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3527: $incourse = 1;
3528: if ($env{'form.forceedit'}) {
3529: $forceview = 1;
3530: } else {
3531: $forceedit = 1;
3532: }
3533: $cfile = $resurl;
3534: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3535: $incourse = 1;
3536: $cfile = $resurl.'/smpedit';
3537: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3538: $incourse = 1;
3539: if ($env{'form.forceedit'}) {
3540: $forceview = 1;
3541: } else {
3542: $forceedit = 1;
3543: }
3544: $cfile = $resurl;
3545: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3546: $incourse = 1;
3547: if ($env{'form.forceedit'}) {
3548: $forceview = 1;
3549: } else {
3550: $forceedit = 1;
3551: }
3552: $cfile = $resurl;
3553: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3554: $incourse = 1;
3555: if ($env{'form.forceedit'}) {
3556: $forceview = 1;
3557: } else {
3558: $forceedit = 1;
3559: }
3560: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3561: }
3562: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3563: my $template = '/res/lib/templates/simpleproblem.problem';
3564: if (&is_on_map($template)) {
3565: $incourse = 1;
3566: $forceview = 1;
3567: $cfile = $template;
3568: }
3569: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3570: $incourse = 1;
3571: if ($env{'form.forceedit'}) {
3572: $forceview = 1;
3573: } else {
3574: $forceedit = 1;
3575: }
3576: $cfile = $resurl;
3577: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3578: $incourse = 1;
3579: if ($env{'form.forceedit'}) {
3580: $forceview = 1;
3581: } else {
3582: $forceedit = 1;
3583: }
3584: $cfile = $resurl;
3585: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3586: $incourse = 1;
3587: $forceview = 1;
3588: if ($symb) {
3589: my ($map,$id,$res)=&decode_symb($symb);
3590: $env{'request.symb'} = $symb;
3591: $cfile = &clutter($res);
3592: } else {
3593: $cfile = $env{'form.suppurl'};
3594: my $escfile = &unescape($cfile);
3595: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3596: $cfile = '/adm/wrapper'.$escfile;
3597: } else {
3598: $escfile =~ s{^http://}{};
3599: $cfile = &escape("/adm/wrapper/ext/$escfile");
3600: }
3601: }
3602: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3603: if ($env{'form.forceedit'}) {
3604: $forceview = 1;
3605: } else {
3606: $forceedit = 1;
3607: }
3608: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3609: }
3610: }
3611: if ($uploaded || $incourse) {
3612: $home=&homeserver($cnum,$cdom);
3613: } elsif ($file !~ m{/$}) {
3614: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3615: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3616: # Check that the user has permission to edit this resource
3617: my $setpriv = 1;
3618: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3619: if (defined($cfudom)) {
3620: $home=&homeserver($cfuname,$cfudom);
3621: $cfile=$file;
3622: }
3623: }
3624: if (($cfile ne '') && (!$incourse || $uploaded) &&
3625: (($home ne '') && ($home ne 'no_host'))) {
3626: my @ids=¤t_machine_ids();
3627: unless (grep(/^\Q$home\E$/,@ids)) {
3628: $switchserver=1;
3629: }
3630: }
3631: }
3632: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3633: }
3634:
3635: sub is_course_upload {
3636: my ($file,$cnum,$cdom) = @_;
3637: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3638: $uploadpath =~ s{^\/}{};
3639: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3640: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3641: return 1;
3642: }
3643: return;
3644: }
3645:
3646: sub in_course {
3647: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3648: if ($hideprivileged) {
3649: my $skipuser;
3650: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3651: my @possdoms = ($cdom);
3652: if ($coursehash{'checkforpriv'}) {
3653: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3654: }
3655: if (&privileged($uname,$udom,\@possdoms)) {
3656: $skipuser = 1;
3657: if ($coursehash{'nothideprivileged'}) {
3658: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3659: my $user;
3660: if ($item =~ /:/) {
3661: $user = $item;
3662: } else {
3663: $user = join(':',split(/[\@]/,$item));
3664: }
3665: if ($user eq $uname.':'.$udom) {
3666: undef($skipuser);
3667: last;
3668: }
3669: }
3670: }
3671: if ($skipuser) {
3672: return 0;
3673: }
3674: }
3675: }
3676: $type ||= 'any';
3677: if (!defined($cdom) || !defined($cnum)) {
3678: my $cid = $env{'request.course.id'};
3679: $cdom = $env{'course.'.$cid.'.domain'};
3680: $cnum = $env{'course.'.$cid.'.num'};
3681: }
3682: my $typesref;
3683: if (($type eq 'any') || ($type eq 'all')) {
3684: $typesref = ['active','previous','future'];
3685: } elsif ($type eq 'previous' || $type eq 'future') {
3686: $typesref = [$type];
3687: }
3688: my %roles = &get_my_roles($uname,$udom,'userroles',
3689: $typesref,undef,[$cdom]);
3690: my ($tmp) = keys(%roles);
3691: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3692: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3693: if (@course_roles > 0) {
3694: return 1;
3695: }
3696: return 0;
3697: }
3698:
3699: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3700: # input: action, courseID, current domain, intended
3701: # path to file, source of file, instruction to parse file for objects,
3702: # ref to hash for embedded objects,
3703: # ref to hash for codebase of java objects.
3704: # reference to scalar to accommodate mime type determined
3705: # from File::MMagic if $parser = parse.
3706: #
3707: # output: url to file (if action was uploaddoc),
3708: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3709: #
3710: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3711: # course.
3712: #
3713: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3714: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3715: # course's home server.
3716: #
3717: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3718: # be copied from $source (current location) to
3719: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3720: # and will then be copied to
3721: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3722: # course's home server.
3723: #
3724: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3725: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3726: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3727: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3728: # in course's home server.
3729: #
3730:
3731: sub process_coursefile {
3732: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3733: $mimetype)=@_;
3734: my $fetchresult;
3735: my $home=&homeserver($docuname,$docudom);
3736: if ($action eq 'propagate') {
3737: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3738: $home);
3739: } else {
3740: my $fpath = '';
3741: my $fname = $file;
3742: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3743: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3744: my $filepath = &build_filepath($fpath);
3745: if ($action eq 'copy') {
3746: if ($source eq '') {
3747: $fetchresult = 'no source file';
3748: return $fetchresult;
3749: } else {
3750: my $destination = $filepath.'/'.$fname;
3751: rename($source,$destination);
3752: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3753: $home);
3754: }
3755: } elsif ($action eq 'uploaddoc') {
3756: open(my $fh,'>',$filepath.'/'.$fname);
3757: print $fh $env{'form.'.$source};
3758: close($fh);
3759: if ($parser eq 'parse') {
3760: my $mm = new File::MMagic;
3761: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3762: if ($type eq 'text/html') {
3763: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3764: unless ($parse_result eq 'ok') {
3765: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3766: }
3767: }
3768: if (ref($mimetype)) {
3769: $$mimetype = $type;
3770: }
3771: }
3772: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3773: $home);
3774: if ($fetchresult eq 'ok') {
3775: return '/uploaded/'.$fpath.'/'.$fname;
3776: } else {
3777: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3778: ' to host '.$home.': '.$fetchresult);
3779: return '/adm/notfound.html';
3780: }
3781: }
3782: }
3783: unless ( $fetchresult eq 'ok') {
3784: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3785: ' to host '.$home.': '.$fetchresult);
3786: }
3787: return $fetchresult;
3788: }
3789:
3790: sub build_filepath {
3791: my ($fpath) = @_;
3792: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3793: unless ($fpath eq '') {
3794: my @parts=split('/',$fpath);
3795: foreach my $part (@parts) {
3796: $filepath.= '/'.$part;
3797: if ((-e $filepath)!=1) {
3798: mkdir($filepath,0777);
3799: }
3800: }
3801: }
3802: return $filepath;
3803: }
3804:
3805: sub store_edited_file {
3806: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3807: my $file = $primary_url;
3808: $file =~ s#^/uploaded/$docudom/$docuname/##;
3809: my $fpath = '';
3810: my $fname = $file;
3811: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3812: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3813: my $filepath = &build_filepath($fpath);
3814: open(my $fh,'>',$filepath.'/'.$fname);
3815: print $fh $content;
3816: close($fh);
3817: my $home=&homeserver($docuname,$docudom);
3818: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3819: $home);
3820: if ($$fetchresult eq 'ok') {
3821: return '/uploaded/'.$fpath.'/'.$fname;
3822: } else {
3823: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3824: ' to host '.$home.': '.$$fetchresult);
3825: return '/adm/notfound.html';
3826: }
3827: }
3828:
3829: sub clean_filename {
3830: my ($fname,$args)=@_;
3831: # Replace Windows backslashes by forward slashes
3832: $fname=~s/\\/\//g;
3833: if (!$args->{'keep_path'}) {
3834: # Get rid of everything but the actual filename
3835: $fname=~s/^.*\/([^\/]+)$/$1/;
3836: }
3837: # Replace spaces by underscores
3838: $fname=~s/\s+/\_/g;
3839: # Replace all other weird characters by nothing
3840: $fname=~s{[^/\w\.\-]}{}g;
3841: # Replace all .\d. sequences with _\d. so they no longer look like version
3842: # numbers
3843: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3844: return $fname;
3845: }
3846: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3847: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3848: # image with the same aspect ratio as the original, but with dimensions which do
3849: # not exceed $resizewidth and $resizeheight.
3850:
3851: sub resizeImage {
3852: my ($img_path,$resizewidth,$resizeheight) = @_;
3853: my $ima = Image::Magick->new;
3854: my $resized;
3855: if (-e $img_path) {
3856: $ima->Read($img_path);
3857: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3858: my $width = $ima->Get('width');
3859: my $height = $ima->Get('height');
3860: if ($width > $resizewidth) {
3861: my $factor = $width/$resizewidth;
3862: my $newheight = $height/$factor;
3863: $ima->Scale(width=>$resizewidth,height=>$newheight);
3864: $resized = 1;
3865: }
3866: }
3867: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3868: my $width = $ima->Get('width');
3869: my $height = $ima->Get('height');
3870: if ($height > $resizeheight) {
3871: my $factor = $height/$resizeheight;
3872: my $newwidth = $width/$factor;
3873: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3874: $resized = 1;
3875: }
3876: }
3877: if ($resized) {
3878: $ima->Write($img_path);
3879: }
3880: }
3881: return;
3882: }
3883:
3884: # --------------- Take an uploaded file and put it into the userfiles directory
3885: # input: $formname - the contents of the file are in $env{"form.$formname"}
3886: # the desired filename is in $env{"form.$formname.filename"}
3887: # $context - possible values: coursedoc, existingfile, overwrite,
3888: # canceloverwrite, or ''.
3889: # if 'coursedoc': upload to the current course
3890: # if 'existingfile': write file to tmp/overwrites directory
3891: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3892: # $context is passed as argument to &finishuserfileupload
3893: # $subdir - directory in userfile to store the file into
3894: # $parser - instruction to parse file for objects ($parser = parse)
3895: # $allfiles - reference to hash for embedded objects
3896: # $codebase - reference to hash for codebase of java objects
3897: # $desuname - username for permanent storage of uploaded file
3898: # $dsetudom - domain for permanaent storage of uploaded file
3899: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3900: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3901: # $resizewidth - width (pixels) to which to resize uploaded image
3902: # $resizeheight - height (pixels) to which to resize uploaded image
3903: # $mimetype - reference to scalar to accommodate mime type determined
3904: # from File::MMagic.
3905: #
3906: # output: url of file in userspace, or error: <message>
3907: # or /adm/notfound.html if failure to upload occurse
3908:
3909: sub userfileupload {
3910: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3911: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3912: if (!defined($subdir)) { $subdir='unknown'; }
3913: my $fname=$env{'form.'.$formname.'.filename'};
3914: $fname=&clean_filename($fname);
3915: # See if there is anything left
3916: unless ($fname) { return 'error: no uploaded file'; }
3917: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3918: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3919: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3920: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3921: my $now = time;
3922: my $filepath;
3923: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3924: $filepath = 'tmp/helprequests/'.$now;
3925: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3926: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3927: '_'.$env{'user.domain'}.'/pending';
3928: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3929: my ($docuname,$docudom);
3930: if ($destudom =~ /^$match_domain$/) {
3931: $docudom = $destudom;
3932: } else {
3933: $docudom = $env{'user.domain'};
3934: }
3935: if ($destuname =~ /^$match_username$/) {
3936: $docuname = $destuname;
3937: } else {
3938: $docuname = $env{'user.name'};
3939: }
3940: if (exists($env{'form.group'})) {
3941: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3942: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3943: }
3944: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3945: if ($context eq 'canceloverwrite') {
3946: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3947: if (-e $tempfile) {
3948: my @info = stat($tempfile);
3949: if ($info[9] eq $env{'form.timestamp'}) {
3950: unlink($tempfile);
3951: }
3952: }
3953: return;
3954: }
3955: }
3956: # Create the directory if not present
3957: my @parts=split(/\//,$filepath);
3958: my $fullpath = $perlvar{'lonDaemons'};
3959: for (my $i=0;$i<@parts;$i++) {
3960: $fullpath .= '/'.$parts[$i];
3961: if ((-e $fullpath)!=1) {
3962: mkdir($fullpath,0777);
3963: }
3964: }
3965: open(my $fh,'>',$fullpath.'/'.$fname);
3966: print $fh $env{'form.'.$formname};
3967: close($fh);
3968: if ($context eq 'existingfile') {
3969: my @info = stat($fullpath.'/'.$fname);
3970: return ($fullpath.'/'.$fname,$info[9]);
3971: } else {
3972: return $fullpath.'/'.$fname;
3973: }
3974: }
3975: if ($subdir eq 'scantron') {
3976: $fname = 'scantron_orig_'.$fname;
3977: } else {
3978: $fname="$subdir/$fname";
3979: }
3980: if ($context eq 'coursedoc') {
3981: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3982: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3983: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3984: return &finishuserfileupload($docuname,$docudom,
3985: $formname,$fname,$parser,$allfiles,
3986: $codebase,$thumbwidth,$thumbheight,
3987: $resizewidth,$resizeheight,$context,$mimetype);
3988: } else {
3989: if ($env{'form.folder'}) {
3990: $fname=$env{'form.folder'}.'/'.$fname;
3991: }
3992: return &process_coursefile('uploaddoc',$docuname,$docudom,
3993: $fname,$formname,$parser,
3994: $allfiles,$codebase,$mimetype);
3995: }
3996: } elsif (defined($destuname)) {
3997: my $docuname=$destuname;
3998: my $docudom=$destudom;
3999: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4000: $parser,$allfiles,$codebase,
4001: $thumbwidth,$thumbheight,
4002: $resizewidth,$resizeheight,$context,$mimetype);
4003: } else {
4004: my $docuname=$env{'user.name'};
4005: my $docudom=$env{'user.domain'};
4006: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4007: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4008: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4009: }
4010: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4011: $parser,$allfiles,$codebase,
4012: $thumbwidth,$thumbheight,
4013: $resizewidth,$resizeheight,$context,$mimetype);
4014: }
4015: }
4016:
4017: sub finishuserfileupload {
4018: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4019: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4020: my $path=$docudom.'/'.$docuname.'/';
4021: my $filepath=$perlvar{'lonDocRoot'};
4022:
4023: my ($fnamepath,$file,$fetchthumb);
4024: $file=$fname;
4025: if ($fname=~m|/|) {
4026: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4027: $path.=$fnamepath.'/';
4028: }
4029: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4030: my $count;
4031: for ($count=4;$count<=$#parts;$count++) {
4032: $filepath.="/$parts[$count]";
4033: if ((-e $filepath)!=1) {
4034: mkdir($filepath,0777);
4035: }
4036: }
4037:
4038: # Save the file
4039: {
4040: if (!open(FH,'>',$filepath.'/'.$file)) {
4041: &logthis('Failed to create '.$filepath.'/'.$file);
4042: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4043: return '/adm/notfound.html';
4044: }
4045: if ($context eq 'overwrite') {
4046: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4047: my $target = $filepath.'/'.$file;
4048: if (-e $source) {
4049: my @info = stat($source);
4050: if ($info[9] eq $env{'form.timestamp'}) {
4051: unless (&File::Copy::move($source,$target)) {
4052: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4053: return "Moving from $source failed";
4054: }
4055: } else {
4056: return "Temporary file: $source had unexpected date/time for last modification";
4057: }
4058: } else {
4059: return "Temporary file: $source missing";
4060: }
4061: } elsif (!print FH ($env{'form.'.$formname})) {
4062: &logthis('Failed to write to '.$filepath.'/'.$file);
4063: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4064: return '/adm/notfound.html';
4065: }
4066: close(FH);
4067: if ($resizewidth && $resizeheight) {
4068: my $mm = new File::MMagic;
4069: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4070: if ($mime_type =~ m{^image/}) {
4071: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4072: }
4073: }
4074: }
4075: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4076: if (ref($mimetype)) {
4077: if ($$mimetype eq '') {
4078: my $mm = new File::MMagic;
4079: my $type = $mm->checktype_filename($filepath.'/'.$file);
4080: $$mimetype = $type;
4081: }
4082: }
4083: }
4084: if ($parser eq 'parse') {
4085: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4086: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4087: $allfiles,$codebase);
4088: unless ($parse_result eq 'ok') {
4089: &logthis('Failed to parse '.$filepath.$file.
4090: ' for embedded media: '.$parse_result);
4091: }
4092: }
4093: }
4094: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4095: my $input = $filepath.'/'.$file;
4096: my $output = $filepath.'/'.'tn-'.$file;
4097: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4098: my @args = ('convert','-sample',$thumbsize,$input,$output);
4099: system({$args[0]} @args);
4100: if (-e $filepath.'/'.'tn-'.$file) {
4101: $fetchthumb = 1;
4102: }
4103: }
4104:
4105: # Notify homeserver to grep it
4106: #
4107: my $docuhome=&homeserver($docuname,$docudom);
4108: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4109: if ($fetchresult eq 'ok') {
4110: if ($fetchthumb) {
4111: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4112: if ($thumbresult ne 'ok') {
4113: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4114: $docuhome.': '.$thumbresult);
4115: }
4116: }
4117: #
4118: # Return the URL to it
4119: return '/uploaded/'.$path.$file;
4120: } else {
4121: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4122: ': '.$fetchresult);
4123: return '/adm/notfound.html';
4124: }
4125: }
4126:
4127: sub extract_embedded_items {
4128: my ($fullpath,$allfiles,$codebase,$content) = @_;
4129: my @state = ();
4130: my (%lastids,%related,%shockwave,%flashvars);
4131: my %javafiles = (
4132: codebase => '',
4133: code => '',
4134: archive => ''
4135: );
4136: my %mediafiles = (
4137: src => '',
4138: movie => '',
4139: );
4140: my $p;
4141: if ($content) {
4142: $p = HTML::LCParser->new($content);
4143: } else {
4144: $p = HTML::LCParser->new($fullpath);
4145: }
4146: while (my $t=$p->get_token()) {
4147: if ($t->[0] eq 'S') {
4148: my ($tagname, $attr) = ($t->[1],$t->[2]);
4149: push(@state, $tagname);
4150: if (lc($tagname) eq 'allow') {
4151: &add_filetype($allfiles,$attr->{'src'},'src');
4152: }
4153: if (lc($tagname) eq 'img') {
4154: &add_filetype($allfiles,$attr->{'src'},'src');
4155: }
4156: if (lc($tagname) eq 'a') {
4157: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4158: &add_filetype($allfiles,$attr->{'href'},'href');
4159: }
4160: }
4161: if (lc($tagname) eq 'script') {
4162: my $src;
4163: if ($attr->{'archive'} =~ /\.jar$/i) {
4164: &add_filetype($allfiles,$attr->{'archive'},'archive');
4165: } else {
4166: if ($attr->{'src'} ne '') {
4167: $src = $attr->{'src'};
4168: &add_filetype($allfiles,$src,'src');
4169: }
4170: }
4171: my $text = $p->get_trimmed_text();
4172: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4173: my @swfargs = split(/,/,$1);
4174: foreach my $item (@swfargs) {
4175: $item =~ s/["']//g;
4176: $item =~ s/^\s+//;
4177: $item =~ s/\s+$//;
4178: }
4179: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4180: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4181: push(@{$related{$swfargs[0]}},$swfargs[2]);
4182: } else {
4183: $related{$swfargs[0]} = [$swfargs[2]];
4184: }
4185: }
4186: }
4187: }
4188: if (lc($tagname) eq 'link') {
4189: if (lc($attr->{'rel'}) eq 'stylesheet') {
4190: &add_filetype($allfiles,$attr->{'href'},'href');
4191: }
4192: }
4193: if (lc($tagname) eq 'object' ||
4194: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4195: foreach my $item (keys(%javafiles)) {
4196: $javafiles{$item} = '';
4197: }
4198: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4199: $lastids{lc($tagname)} = $attr->{'id'};
4200: }
4201: }
4202: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4203: my $name = lc($attr->{'name'});
4204: foreach my $item (keys(%javafiles)) {
4205: if ($name eq $item) {
4206: $javafiles{$item} = $attr->{'value'};
4207: last;
4208: }
4209: }
4210: my $pathfrom;
4211: foreach my $item (keys(%mediafiles)) {
4212: if ($name eq $item) {
4213: $pathfrom = $attr->{'value'};
4214: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4215: &add_filetype($allfiles,$pathfrom,$name);
4216: last;
4217: }
4218: }
4219: if ($name eq 'flashvars') {
4220: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4221: }
4222: if ($pathfrom ne '') {
4223: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4224: $pathfrom);
4225: }
4226: }
4227: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4228: foreach my $item (keys(%javafiles)) {
4229: if ($attr->{$item}) {
4230: $javafiles{$item} = $attr->{$item};
4231: last;
4232: }
4233: }
4234: foreach my $item (keys(%mediafiles)) {
4235: if ($attr->{$item}) {
4236: &add_filetype($allfiles,$attr->{$item},$item);
4237: last;
4238: }
4239: }
4240: if (lc($tagname) eq 'embed') {
4241: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4242: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4243: $attr->{'src'});
4244: }
4245: }
4246: }
4247: if (lc($tagname) eq 'iframe') {
4248: my $src = $attr->{'src'} ;
4249: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4250: &add_filetype($allfiles,$src,'src');
4251: } elsif ($src =~ m{^/}) {
4252: if ($env{'request.course.id'}) {
4253: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4254: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4255: my $url = &hreflocation('',$fullpath);
4256: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4257: my $relpath = $1;
4258: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4259: &add_filetype($allfiles,$1,'src');
4260: }
4261: }
4262: }
4263: }
4264: }
4265: if ($t->[4] =~ m{/>$}) {
4266: pop(@state);
4267: }
4268: } elsif ($t->[0] eq 'E') {
4269: my ($tagname) = ($t->[1]);
4270: if ($javafiles{'codebase'} ne '') {
4271: $javafiles{'codebase'} .= '/';
4272: }
4273: if (lc($tagname) eq 'applet' ||
4274: lc($tagname) eq 'object' ||
4275: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4276: ) {
4277: foreach my $item (keys(%javafiles)) {
4278: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4279: my $file=$javafiles{'codebase'}.$javafiles{$item};
4280: &add_filetype($allfiles,$file,$item);
4281: }
4282: }
4283: }
4284: pop @state;
4285: }
4286: }
4287: foreach my $id (sort(keys(%flashvars))) {
4288: if ($shockwave{$id} ne '') {
4289: my @pairs = split(/\&/,$flashvars{$id});
4290: foreach my $pair (@pairs) {
4291: my ($key,$value) = split(/\=/,$pair);
4292: if ($key eq 'thumb') {
4293: &add_filetype($allfiles,$value,$key);
4294: } elsif ($key eq 'content') {
4295: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4296: my ($ext) = ($value =~ /\.([^.]+)$/);
4297: if ($ext ne '') {
4298: &add_filetype($allfiles,$path.$value,$ext);
4299: }
4300: }
4301: }
4302: }
4303: }
4304: return 'ok';
4305: }
4306:
4307: sub add_filetype {
4308: my ($allfiles,$file,$type)=@_;
4309: if (exists($allfiles->{$file})) {
4310: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4311: push(@{$allfiles->{$file}}, &escape($type));
4312: }
4313: } else {
4314: @{$allfiles->{$file}} = (&escape($type));
4315: }
4316: }
4317:
4318: sub embedded_dependency {
4319: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4320: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4321: if (($identifier ne '') &&
4322: (ref($related->{$identifier}) eq 'ARRAY') &&
4323: ($pathfrom ne '')) {
4324: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4325: foreach my $dep (@{$related->{$identifier}}) {
4326: &add_filetype($allfiles,$path.$dep,'object');
4327: }
4328: }
4329: }
4330: return;
4331: }
4332:
4333: sub removeuploadedurl {
4334: my ($url)=@_;
4335: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4336: return &removeuserfile($uname,$udom,$fname);
4337: }
4338:
4339: sub removeuserfile {
4340: my ($docuname,$docudom,$fname)=@_;
4341: my $home=&homeserver($docuname,$docudom);
4342: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4343: if ($result eq 'ok') {
4344: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4345: my $metafile = $fname.'.meta';
4346: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4347: my $url = "/uploaded/$docudom/$docuname/$fname";
4348: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4349: my $sqlresult =
4350: &update_portfolio_table($docuname,$docudom,$file,
4351: 'portfolio_metadata',$group,
4352: 'delete');
4353: }
4354: }
4355: return $result;
4356: }
4357:
4358: sub mkdiruserfile {
4359: my ($docuname,$docudom,$dir)=@_;
4360: my $home=&homeserver($docuname,$docudom);
4361: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4362: }
4363:
4364: sub renameuserfile {
4365: my ($docuname,$docudom,$old,$new)=@_;
4366: my $home=&homeserver($docuname,$docudom);
4367: my $result = &reply("renameuserfile:$docudom:$docuname:".
4368: &escape("$old").':'.&escape("$new"),$home);
4369: if ($result eq 'ok') {
4370: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4371: my $oldmeta = $old.'.meta';
4372: my $newmeta = $new.'.meta';
4373: my $metaresult =
4374: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4375: my $url = "/uploaded/$docudom/$docuname/$old";
4376: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4377: my $sqlresult =
4378: &update_portfolio_table($docuname,$docudom,$file,
4379: 'portfolio_metadata',$group,
4380: 'delete');
4381: }
4382: }
4383: return $result;
4384: }
4385:
4386: # ------------------------------------------------------------------------- Log
4387:
4388: sub log {
4389: my ($dom,$nam,$hom,$what)=@_;
4390: return critical("log:$dom:$nam:$what",$hom);
4391: }
4392:
4393: # ------------------------------------------------------------------ Course Log
4394: #
4395: # This routine flushes several buffers of non-mission-critical nature
4396: #
4397:
4398: sub flushcourselogs {
4399: &logthis('Flushing log buffers');
4400: #
4401: # course logs
4402: # This is a log of all transactions in a course, which can be used
4403: # for data mining purposes
4404: #
4405: # It also collects the courseid database, which lists last transaction
4406: # times and course titles for all courseids
4407: #
4408: my %courseidbuffer=();
4409: foreach my $crsid (keys(%courselogs)) {
4410: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4411: &escape($courselogs{$crsid}),
4412: $coursehombuf{$crsid}) eq 'ok') {
4413: delete $courselogs{$crsid};
4414: } else {
4415: &logthis('Failed to flush log buffer for '.$crsid);
4416: if (length($courselogs{$crsid})>40000) {
4417: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4418: " exceeded maximum size, deleting.</font>");
4419: delete $courselogs{$crsid};
4420: }
4421: }
4422: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4423: 'description' => $coursedescrbuf{$crsid},
4424: 'inst_code' => $courseinstcodebuf{$crsid},
4425: 'type' => $coursetypebuf{$crsid},
4426: 'owner' => $courseownerbuf{$crsid},
4427: };
4428: }
4429: #
4430: # Write course id database (reverse lookup) to homeserver of courses
4431: # Is used in pickcourse
4432: #
4433: foreach my $crs_home (keys(%courseidbuffer)) {
4434: my $response = &courseidput(&host_domain($crs_home),
4435: $courseidbuffer{$crs_home},
4436: $crs_home,'timeonly');
4437: }
4438: #
4439: # File accesses
4440: # Writes to the dynamic metadata of resources to get hit counts, etc.
4441: #
4442: foreach my $entry (keys(%accesshash)) {
4443: if ($entry =~ /___count$/) {
4444: my ($dom,$name);
4445: ($dom,$name,undef)=
4446: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4447: if (! defined($dom) || $dom eq '' ||
4448: ! defined($name) || $name eq '') {
4449: my $cid = $env{'request.course.id'};
4450: $dom = $env{'request.'.$cid.'.domain'};
4451: $name = $env{'request.'.$cid.'.num'};
4452: }
4453: my $value = $accesshash{$entry};
4454: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4455: my %temphash=($url => $value);
4456: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4457: if ($result eq 'ok') {
4458: delete $accesshash{$entry};
4459: }
4460: } else {
4461: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4462: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4463: my %temphash=($entry => $accesshash{$entry});
4464: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4465: delete $accesshash{$entry};
4466: }
4467: }
4468: }
4469: #
4470: # Roles
4471: # Reverse lookup of user roles for course faculty/staff and co-authorship
4472: #
4473: foreach my $entry (keys(%userrolehash)) {
4474: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4475: split(/\:/,$entry);
4476: if (&Apache::lonnet::put('nohist_userroles',
4477: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4478: $rudom,$runame) eq 'ok') {
4479: delete $userrolehash{$entry};
4480: }
4481: }
4482: #
4483: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4484: #
4485: my %domrolebuffer = ();
4486: foreach my $entry (keys(%domainrolehash)) {
4487: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4488: if ($domrolebuffer{$rudom}) {
4489: $domrolebuffer{$rudom}.='&'.&escape($entry).
4490: '='.&escape($domainrolehash{$entry});
4491: } else {
4492: $domrolebuffer{$rudom}.=&escape($entry).
4493: '='.&escape($domainrolehash{$entry});
4494: }
4495: delete $domainrolehash{$entry};
4496: }
4497: foreach my $dom (keys(%domrolebuffer)) {
4498: my %servers;
4499: if (defined(&domain($dom,'primary'))) {
4500: my $primary=&domain($dom,'primary');
4501: my $hostname=&hostname($primary);
4502: $servers{$primary} = $hostname;
4503: } else {
4504: %servers = &get_servers($dom,'library');
4505: }
4506: foreach my $tryserver (keys(%servers)) {
4507: if (&reply('domroleput:'.$dom.':'.
4508: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4509: last;
4510: } else {
4511: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4512: }
4513: }
4514: }
4515: $dumpcount++;
4516: }
4517:
4518: sub courselog {
4519: my $what=shift;
4520: $what=time.':'.$what;
4521: unless ($env{'request.course.id'}) { return ''; }
4522: $coursedombuf{$env{'request.course.id'}}=
4523: $env{'course.'.$env{'request.course.id'}.'.domain'};
4524: $coursenumbuf{$env{'request.course.id'}}=
4525: $env{'course.'.$env{'request.course.id'}.'.num'};
4526: $coursehombuf{$env{'request.course.id'}}=
4527: $env{'course.'.$env{'request.course.id'}.'.home'};
4528: $coursedescrbuf{$env{'request.course.id'}}=
4529: $env{'course.'.$env{'request.course.id'}.'.description'};
4530: $courseinstcodebuf{$env{'request.course.id'}}=
4531: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4532: $courseownerbuf{$env{'request.course.id'}}=
4533: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4534: $coursetypebuf{$env{'request.course.id'}}=
4535: $env{'course.'.$env{'request.course.id'}.'.type'};
4536: if (defined $courselogs{$env{'request.course.id'}}) {
4537: $courselogs{$env{'request.course.id'}}.='&'.$what;
4538: } else {
4539: $courselogs{$env{'request.course.id'}}.=$what;
4540: }
4541: if (length($courselogs{$env{'request.course.id'}})>4048) {
4542: &flushcourselogs();
4543: }
4544: }
4545:
4546: sub courseacclog {
4547: my $fnsymb=shift;
4548: unless ($env{'request.course.id'}) { return ''; }
4549: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4550: if ($fnsymb=~/$LONCAPA::assess_re/) {
4551: $what.=':POST';
4552: # FIXME: Probably ought to escape things....
4553: foreach my $key (keys(%env)) {
4554: if ($key=~/^form\.(.*)/) {
4555: my $formitem = $1;
4556: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4557: $what.=':'.$formitem.'='.$env{$key};
4558: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4559: $what.=':'.$formitem.'='.$env{$key};
4560: }
4561: }
4562: }
4563: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4564: # FIXME: We should not be depending on a form parameter that someone
4565: # editing lonsearchcat.pm might change in the future.
4566: if ($env{'form.phase'} eq 'course_search') {
4567: $what.= ':POST';
4568: # FIXME: Probably ought to escape things....
4569: foreach my $element ('courseexp','crsfulltext','crsrelated',
4570: 'crsdiscuss') {
4571: $what.=':'.$element.'='.$env{'form.'.$element};
4572: }
4573: }
4574: }
4575: &courselog($what);
4576: }
4577:
4578: sub countacc {
4579: my $url=&declutter(shift);
4580: return if (! defined($url) || $url eq '');
4581: unless ($env{'request.course.id'}) { return ''; }
4582: #
4583: # Mark that this url was used in this course
4584: #
4585: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4586: #
4587: # Increase the access count for this resource in this child process
4588: #
4589: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4590: $accesshash{$key}++;
4591: }
4592:
4593: sub linklog {
4594: my ($from,$to)=@_;
4595: $from=&declutter($from);
4596: $to=&declutter($to);
4597: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4598: $accesshash{$to.'___'.$from.'___goto'}=1;
4599: }
4600:
4601: sub statslog {
4602: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4603: if ($users<2) { return; }
4604: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4605: 'course' => $env{'request.course.id'},
4606: 'sections' => '"all"',
4607: 'num_students' => $users,
4608: 'part' => $part,
4609: 'symb' => $symb,
4610: 'mean_tries' => $av_attempts,
4611: 'deg_of_diff' => $degdiff});
4612: foreach my $key (keys(%dynstore)) {
4613: $accesshash{$key}=$dynstore{$key};
4614: }
4615: }
4616:
4617: sub userrolelog {
4618: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4619: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4620: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4621: $userrolehash
4622: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4623: =$tend.':'.$tstart;
4624: }
4625: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4626: $userrolehash
4627: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4628: =$tend.':'.$tstart;
4629: }
4630: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4631: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4632: $domainrolehash
4633: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4634: = $tend.':'.$tstart;
4635: }
4636: }
4637:
4638: sub courserolelog {
4639: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4640: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4641: my $cdom = $1;
4642: my $cnum = $2;
4643: my $sec = $3;
4644: my $namespace = 'rolelog';
4645: my %storehash = (
4646: role => $trole,
4647: start => $tstart,
4648: end => $tend,
4649: selfenroll => $selfenroll,
4650: context => $context,
4651: );
4652: if ($trole eq 'gr') {
4653: $namespace = 'groupslog';
4654: $storehash{'group'} = $sec;
4655: } else {
4656: $storehash{'section'} = $sec;
4657: }
4658: &write_log('course',$namespace,\%storehash,$delflag,$username,
4659: $domain,$cnum,$cdom);
4660: if (($trole ne 'st') || ($sec ne '')) {
4661: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4662: }
4663: }
4664: return;
4665: }
4666:
4667: sub domainrolelog {
4668: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4669: if ($area =~ m{^/($match_domain)/$}) {
4670: my $cdom = $1;
4671: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4672: my $namespace = 'rolelog';
4673: my %storehash = (
4674: role => $trole,
4675: start => $tstart,
4676: end => $tend,
4677: context => $context,
4678: );
4679: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4680: $domain,$domconfiguser,$cdom);
4681: }
4682: return;
4683:
4684: }
4685:
4686: sub coauthorrolelog {
4687: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4688: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4689: my $audom = $1;
4690: my $auname = $2;
4691: my $namespace = 'rolelog';
4692: my %storehash = (
4693: role => $trole,
4694: start => $tstart,
4695: end => $tend,
4696: context => $context,
4697: );
4698: &write_log('author',$namespace,\%storehash,$delflag,$username,
4699: $domain,$auname,$audom);
4700: }
4701: return;
4702: }
4703:
4704: sub get_course_adv_roles {
4705: my ($cid,$codes) = @_;
4706: $cid=$env{'request.course.id'} unless (defined($cid));
4707: my %coursehash=&coursedescription($cid);
4708: my $crstype = &Apache::loncommon::course_type($cid);
4709: my %nothide=();
4710: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4711: if ($user !~ /:/) {
4712: $nothide{join(':',split(/[\@]/,$user))}=1;
4713: } else {
4714: $nothide{$user}=1;
4715: }
4716: }
4717: my @possdoms = ($coursehash{'domain'});
4718: if ($coursehash{'checkforpriv'}) {
4719: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4720: }
4721: my %returnhash=();
4722: my %dumphash=
4723: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4724: my $now=time;
4725: my %privileged;
4726: foreach my $entry (keys(%dumphash)) {
4727: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4728: if (($tstart) && ($tstart<0)) { next; }
4729: if (($tend) && ($tend<$now)) { next; }
4730: if (($tstart) && ($now<$tstart)) { next; }
4731: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4732: if ($username eq '' || $domain eq '') { next; }
4733: if ((&privileged($username,$domain,\@possdoms)) &&
4734: (!$nothide{$username.':'.$domain})) { next; }
4735: if ($role eq 'cr') { next; }
4736: if ($codes) {
4737: if ($section) { $role .= ':'.$section; }
4738: if ($returnhash{$role}) {
4739: $returnhash{$role}.=','.$username.':'.$domain;
4740: } else {
4741: $returnhash{$role}=$username.':'.$domain;
4742: }
4743: } else {
4744: my $key=&plaintext($role,$crstype);
4745: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4746: if ($returnhash{$key}) {
4747: $returnhash{$key}.=','.$username.':'.$domain;
4748: } else {
4749: $returnhash{$key}=$username.':'.$domain;
4750: }
4751: }
4752: }
4753: return %returnhash;
4754: }
4755:
4756: sub get_my_roles {
4757: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4758: unless (defined($uname)) { $uname=$env{'user.name'}; }
4759: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4760: my (%dumphash,%nothide);
4761: if ($context eq 'userroles') {
4762: %dumphash = &dump('roles',$udom,$uname);
4763: } else {
4764: %dumphash = &dump('nohist_userroles',$udom,$uname);
4765: if ($hidepriv) {
4766: my %coursehash=&coursedescription($udom.'_'.$uname);
4767: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4768: if ($user !~ /:/) {
4769: $nothide{join(':',split(/[\@]/,$user))} = 1;
4770: } else {
4771: $nothide{$user} = 1;
4772: }
4773: }
4774: }
4775: }
4776: my %returnhash=();
4777: my $now=time;
4778: my %privileged;
4779: foreach my $entry (keys(%dumphash)) {
4780: my ($role,$tend,$tstart);
4781: if ($context eq 'userroles') {
4782: next if ($entry =~ /^rolesdef/);
4783: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4784: } else {
4785: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4786: }
4787: if (($tstart) && ($tstart<0)) { next; }
4788: my $status = 'active';
4789: if (($tend) && ($tend<=$now)) {
4790: $status = 'previous';
4791: }
4792: if (($tstart) && ($now<$tstart)) {
4793: $status = 'future';
4794: }
4795: if (ref($types) eq 'ARRAY') {
4796: if (!grep(/^\Q$status\E$/,@{$types})) {
4797: next;
4798: }
4799: } else {
4800: if ($status ne 'active') {
4801: next;
4802: }
4803: }
4804: my ($rolecode,$username,$domain,$section,$area);
4805: if ($context eq 'userroles') {
4806: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4807: (undef,$domain,$username,$section) = split(/\//,$area);
4808: } else {
4809: ($role,$username,$domain,$section) = split(/\:/,$entry);
4810: }
4811: if (ref($roledoms) eq 'ARRAY') {
4812: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4813: next;
4814: }
4815: }
4816: if (ref($roles) eq 'ARRAY') {
4817: if (!grep(/^\Q$role\E$/,@{$roles})) {
4818: if ($role =~ /^cr\//) {
4819: if (!grep(/^cr$/,@{$roles})) {
4820: next;
4821: }
4822: } elsif ($role =~ /^gr\//) {
4823: if (!grep(/^gr$/,@{$roles})) {
4824: next;
4825: }
4826: } else {
4827: next;
4828: }
4829: }
4830: }
4831: if ($hidepriv) {
4832: my @privroles = ('dc','su');
4833: if ($context eq 'userroles') {
4834: next if (grep(/^\Q$role\E$/,@privroles));
4835: } else {
4836: my $possdoms = [$domain];
4837: if (ref($roledoms) eq 'ARRAY') {
4838: push(@{$possdoms},@{$roledoms});
4839: }
4840: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4841: if (!$nothide{$username.':'.$domain}) {
4842: next;
4843: }
4844: }
4845: }
4846: }
4847: if ($withsec) {
4848: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4849: $tstart.':'.$tend;
4850: } else {
4851: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4852: }
4853: }
4854: return %returnhash;
4855: }
4856:
4857: sub get_all_adhocroles {
4858: my ($dom) = @_;
4859: my @roles_by_num = ();
4860: my %domdefaults = &get_domain_defaults($dom);
4861: my (%description,%access_in_dom,%access_info);
4862: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4863: my $count = 0;
4864: my %domcurrent = %{$domdefaults{'adhocroles'}};
4865: my %ordered;
4866: foreach my $role (sort(keys(%domcurrent))) {
4867: my ($order,$desc,$access_in_dom);
4868: if (ref($domcurrent{$role}) eq 'HASH') {
4869: $order = $domcurrent{$role}{'order'};
4870: $desc = $domcurrent{$role}{'desc'};
4871: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4872: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4873: }
4874: if ($order eq '') {
4875: $order = $count;
4876: }
4877: $ordered{$order} = $role;
4878: if ($desc ne '') {
4879: $description{$role} = $desc;
4880: } else {
4881: $description{$role}= $role;
4882: }
4883: $count++;
4884: }
4885: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4886: push(@roles_by_num,$ordered{$item});
4887: }
4888: }
4889: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4890: }
4891:
4892: sub get_my_adhocroles {
4893: my ($cid,$checkreg) = @_;
4894: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4895: if ($env{'request.course.id'} eq $cid) {
4896: $cdom = $env{'course.'.$cid.'.domain'};
4897: $cnum = $env{'course.'.$cid.'.num'};
4898: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4899: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4900: $cdom = $1;
4901: $cnum = $2;
4902: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4903: $cdom,$cnum);
4904: }
4905: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4906: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4907: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4908: if ($rosterhash{$user} ne '') {
4909: my $type = (split(/:/,$rosterhash{$user}))[5];
4910: return ([],{}) if ($type eq 'auto');
4911: }
4912: }
4913: if (($cdom ne '') && ($cnum ne '')) {
4914: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4915: my $then=$env{'user.login.time'};
4916: my $update=$env{'user.update.time'};
4917: if (!$update) {
4918: $update = $then;
4919: }
4920: my @liveroles;
4921: foreach my $role ('dh','da') {
4922: if ($env{"user.role.$role./$cdom/"}) {
4923: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4924: my $limit = $update;
4925: if ($env{'request.role'} eq "$role./$cdom/") {
4926: $limit = $then;
4927: }
4928: my $activerole = 1;
4929: if ($tstart && $tstart>$limit) { $activerole = 0; }
4930: if ($tend && $tend <$limit) { $activerole = 0; }
4931: if ($activerole) {
4932: push(@liveroles,$role);
4933: }
4934: }
4935: }
4936: if (@liveroles) {
4937: if (&homeserver($cnum,$cdom) ne 'no_host') {
4938: my ($accessref,$accessinfo,%access_in_dom);
4939: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4940: if (ref($roles_by_num) eq 'ARRAY') {
4941: if (@{$roles_by_num}) {
4942: my %settings;
4943: if ($env{'request.course.id'} eq $cid) {
4944: foreach my $envkey (keys(%env)) {
4945: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4946: $settings{$1} = $env{$envkey};
4947: }
4948: }
4949: } else {
4950: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4951: }
4952: my %setincrs;
4953: if ($settings{'internal.adhocaccess'}) {
4954: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4955: }
4956: my @statuses;
4957: if ($env{'environment.inststatus'}) {
4958: @statuses = split(/,/,$env{'environment.inststatus'});
4959: }
4960: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4961: if (ref($accessref) eq 'HASH') {
4962: %access_in_dom = %{$accessref};
4963: }
4964: foreach my $role (@{$roles_by_num}) {
4965: my ($curraccess,@okstatus,@personnel);
4966: if ($setincrs{$role}) {
4967: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4968: if ($curraccess eq 'status') {
4969: @okstatus = split(/\&/,$rest);
4970: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4971: @personnel = split(/\&/,$rest);
4972: }
4973: } else {
4974: $curraccess = $access_in_dom{$role};
4975: if (ref($accessinfo) eq 'HASH') {
4976: if ($curraccess eq 'status') {
4977: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4978: @okstatus = @{$accessinfo->{$role}};
4979: }
4980: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4981: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4982: @personnel = @{$accessinfo->{$role}};
4983: }
4984: }
4985: }
4986: }
4987: if ($curraccess eq 'none') {
4988: next;
4989: } elsif ($curraccess eq 'all') {
4990: push(@possroles,$role);
4991: } elsif ($curraccess eq 'dh') {
4992: if (grep(/^dh$/,@liveroles)) {
4993: push(@possroles,$role);
4994: } else {
4995: next;
4996: }
4997: } elsif ($curraccess eq 'da') {
4998: if (grep(/^da$/,@liveroles)) {
4999: push(@possroles,$role);
5000: } else {
5001: next;
5002: }
5003: } elsif ($curraccess eq 'status') {
5004: if (@okstatus) {
5005: if (!@statuses) {
5006: if (grep(/^default$/,@okstatus)) {
5007: push(@possroles,$role);
5008: }
5009: } else {
5010: foreach my $status (@okstatus) {
5011: if (grep(/^\Q$status\E$/,@statuses)) {
5012: push(@possroles,$role);
5013: last;
5014: }
5015: }
5016: }
5017: }
5018: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5019: if (grep(/^\Q$user\E$/,@personnel)) {
5020: if ($curraccess eq 'exc') {
5021: push(@possroles,$role);
5022: }
5023: } elsif ($curraccess eq 'inc') {
5024: push(@possroles,$role);
5025: }
5026: }
5027: }
5028: }
5029: }
5030: }
5031: }
5032: }
5033: }
5034: unless (ref($description) eq 'HASH') {
5035: if (ref($roles_by_num) eq 'ARRAY') {
5036: my %desc;
5037: map { $desc{$_} = $_; } (@{$roles_by_num});
5038: $description = \%desc;
5039: } else {
5040: $description = {};
5041: }
5042: }
5043: return (\@possroles,$description);
5044: }
5045:
5046: # ----------------------------------------------------- Frontpage Announcements
5047: #
5048: #
5049:
5050: sub postannounce {
5051: my ($server,$text)=@_;
5052: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5053: unless ($text=~/\w/) { $text=''; }
5054: return &reply('setannounce:'.&escape($text),$server);
5055: }
5056:
5057: sub getannounce {
5058:
5059: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5060: my $announcement='';
5061: while (my $line = <$fh>) { $announcement .= $line; }
5062: close($fh);
5063: if ($announcement=~/\w/) {
5064: return
5065: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5066: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5067: } else {
5068: return '';
5069: }
5070: } else {
5071: return '';
5072: }
5073: }
5074:
5075: # ---------------------------------------------------------- Course ID routines
5076: # Deal with domain's nohist_courseid.db files
5077: #
5078:
5079: sub courseidput {
5080: my ($domain,$storehash,$coursehome,$caller) = @_;
5081: return unless (ref($storehash) eq 'HASH');
5082: my $outcome;
5083: if ($caller eq 'timeonly') {
5084: my $cids = '';
5085: foreach my $item (keys(%$storehash)) {
5086: $cids.=&escape($item).'&';
5087: }
5088: $cids=~s/\&$//;
5089: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5090: $coursehome);
5091: } else {
5092: my $items = '';
5093: foreach my $item (keys(%$storehash)) {
5094: $items.= &escape($item).'='.
5095: &freeze_escape($$storehash{$item}).'&';
5096: }
5097: $items=~s/\&$//;
5098: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5099: $coursehome);
5100: }
5101: if ($outcome eq 'unknown_cmd') {
5102: my $what;
5103: foreach my $cid (keys(%$storehash)) {
5104: $what .= &escape($cid).'=';
5105: foreach my $item ('description','inst_code','owner','type') {
5106: $what .= &escape($storehash->{$cid}{$item}).':';
5107: }
5108: $what =~ s/\:$/&/;
5109: }
5110: $what =~ s/\&$//;
5111: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5112: } else {
5113: return $outcome;
5114: }
5115: }
5116:
5117: sub courseiddump {
5118: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5119: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5120: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5121: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5122: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5123: my $as_hash = 1;
5124: my %returnhash;
5125: if (!$domfilter) { $domfilter=''; }
5126: my %libserv = &all_library();
5127: foreach my $tryserver (keys(%libserv)) {
5128: if ( ( $hostidflag == 1
5129: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5130: || (!defined($hostidflag)) ) {
5131:
5132: if (($domfilter eq '') ||
5133: (&host_domain($tryserver) eq $domfilter)) {
5134: my $rep;
5135: if (grep { $_ eq $tryserver } current_machine_ids()) {
5136: $rep = LONCAPA::Lond::dump_course_id_handler(
5137: join(":", (&host_domain($tryserver), $sincefilter,
5138: &escape($descfilter), &escape($instcodefilter),
5139: &escape($ownerfilter), &escape($coursefilter),
5140: &escape($typefilter), &escape($regexp_ok),
5141: $as_hash, &escape($selfenrollonly),
5142: &escape($catfilter), $showhidden, $caller,
5143: &escape($cloner), &escape($cc_clone), $cloneonly,
5144: &escape($createdbefore), &escape($createdafter),
5145: &escape($creationcontext),$domcloner,$hasuniquecode,
5146: $reqcrsdom,&escape($reqinstcode))));
5147: } else {
5148: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5149: $sincefilter.':'.&escape($descfilter).':'.
5150: &escape($instcodefilter).':'.&escape($ownerfilter).
5151: ':'.&escape($coursefilter).':'.&escape($typefilter).
5152: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5153: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5154: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5155: &escape($cc_clone).':'.$cloneonly.':'.
5156: &escape($createdbefore).':'.&escape($createdafter).':'.
5157: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5158: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5159: }
5160:
5161: my @pairs=split(/\&/,$rep);
5162: foreach my $item (@pairs) {
5163: my ($key,$value)=split(/\=/,$item,2);
5164: $key = &unescape($key);
5165: next if ($key =~ /^error: 2 /);
5166: my $result = &thaw_unescape($value);
5167: if (ref($result) eq 'HASH') {
5168: $returnhash{$key}=$result;
5169: } else {
5170: my @responses = split(/:/,$value);
5171: my @items = ('description','inst_code','owner','type');
5172: for (my $i=0; $i<@responses; $i++) {
5173: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5174: }
5175: }
5176: }
5177: }
5178: }
5179: }
5180: return %returnhash;
5181: }
5182:
5183: sub courselastaccess {
5184: my ($cdom,$cnum,$hostidref) = @_;
5185: my %returnhash;
5186: if ($cdom && $cnum) {
5187: my $chome = &homeserver($cnum,$cdom);
5188: if ($chome ne 'no_host') {
5189: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5190: &extract_lastaccess(\%returnhash,$rep);
5191: }
5192: } else {
5193: if (!$cdom) { $cdom=''; }
5194: my %libserv = &all_library();
5195: foreach my $tryserver (keys(%libserv)) {
5196: if (ref($hostidref) eq 'ARRAY') {
5197: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5198: }
5199: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5200: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5201: &extract_lastaccess(\%returnhash,$rep);
5202: }
5203: }
5204: }
5205: return %returnhash;
5206: }
5207:
5208: sub extract_lastaccess {
5209: my ($returnhash,$rep) = @_;
5210: if (ref($returnhash) eq 'HASH') {
5211: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5212: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5213: $rep eq '') {
5214: my @pairs=split(/\&/,$rep);
5215: foreach my $item (@pairs) {
5216: my ($key,$value)=split(/\=/,$item,2);
5217: $key = &unescape($key);
5218: next if ($key =~ /^error: 2 /);
5219: $returnhash->{$key} = &thaw_unescape($value);
5220: }
5221: }
5222: }
5223: return;
5224: }
5225:
5226: # ---------------------------------------------------------- DC e-mail
5227:
5228: sub dcmailput {
5229: my ($domain,$msgid,$message,$server)=@_;
5230: my $status = &Apache::lonnet::critical(
5231: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5232: &escape($message),$server);
5233: return $status;
5234: }
5235:
5236: sub dcmaildump {
5237: my ($dom,$startdate,$enddate,$senders) = @_;
5238: my %returnhash=();
5239:
5240: if (defined(&domain($dom,'primary'))) {
5241: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5242: &escape($enddate).':';
5243: my @esc_senders=map { &escape($_)} @$senders;
5244: $cmd.=&escape(join('&',@esc_senders));
5245: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5246: my ($key,$value) = split(/\=/,$line,2);
5247: if (($key) && ($value)) {
5248: $returnhash{&unescape($key)} = &unescape($value);
5249: }
5250: }
5251: }
5252: return %returnhash;
5253: }
5254: # ---------------------------------------------------------- Domain roles
5255:
5256: sub get_domain_roles {
5257: my ($dom,$roles,$startdate,$enddate)=@_;
5258: if ((!defined($startdate)) || ($startdate eq '')) {
5259: $startdate = '.';
5260: }
5261: if ((!defined($enddate)) || ($enddate eq '')) {
5262: $enddate = '.';
5263: }
5264: my $rolelist;
5265: if (ref($roles) eq 'ARRAY') {
5266: $rolelist = join('&',@{$roles});
5267: }
5268: my %personnel = ();
5269:
5270: my %servers = &get_servers($dom,'library');
5271: foreach my $tryserver (keys(%servers)) {
5272: %{$personnel{$tryserver}}=();
5273: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5274: &escape($startdate).':'.
5275: &escape($enddate).':'.
5276: &escape($rolelist), $tryserver))) {
5277: my ($key,$value) = split(/\=/,$line,2);
5278: if (($key) && ($value)) {
5279: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5280: }
5281: }
5282: }
5283: return %personnel;
5284: }
5285:
5286: sub get_active_domroles {
5287: my ($dom,$roles) = @_;
5288: return () unless (ref($roles) eq 'ARRAY');
5289: my $now = time;
5290: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5291: my %domroles;
5292: foreach my $server (keys(%dompersonnel)) {
5293: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5294: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5295: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5296: }
5297: }
5298: return %domroles;
5299: }
5300:
5301: # ----------------------------------------------------------- Interval timing
5302:
5303: {
5304: # Caches needed for speedup of navmaps
5305: # We don't want to cache this for very long at all (5 seconds at most)
5306: #
5307: # The user for whom we cache
5308: my $cachedkey='';
5309: # The cached times for this user
5310: my %cachedtimes=();
5311: # When this was last done
5312: my $cachedtime='';
5313:
5314: sub load_all_first_access {
5315: my ($uname,$udom,$ignorecache)=@_;
5316: if (($cachedkey eq $uname.':'.$udom) &&
5317: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5318: (!$ignorecache)) {
5319: return;
5320: }
5321: $cachedtime=time;
5322: $cachedkey=$uname.':'.$udom;
5323: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5324: }
5325:
5326: sub get_first_access {
5327: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5328: my ($symb,$courseid,$udom,$uname)=&whichuser();
5329: if ($argsymb) { $symb=$argsymb; }
5330: my ($map,$id,$res)=&decode_symb($symb);
5331: if ($argmap) { $map = $argmap; }
5332: if ($type eq 'course') {
5333: $res='course';
5334: } elsif ($type eq 'map') {
5335: $res=&symbread($map);
5336: } else {
5337: $res=$symb;
5338: }
5339: &load_all_first_access($uname,$udom,$ignorecache);
5340: return $cachedtimes{"$courseid\0$res"};
5341: }
5342:
5343: sub set_first_access {
5344: my ($type,$interval)=@_;
5345: my ($symb,$courseid,$udom,$uname)=&whichuser();
5346: my ($map,$id,$res)=&decode_symb($symb);
5347: if ($type eq 'course') {
5348: $res='course';
5349: } elsif ($type eq 'map') {
5350: $res=&symbread($map);
5351: } else {
5352: $res=$symb;
5353: }
5354: $cachedkey='';
5355: my $firstaccess=&get_first_access($type,$symb,$map);
5356: if ($firstaccess) {
5357: &logthis("First access time already set ($firstaccess) when attempting ".
5358: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5359: "in $courseid");
5360: return 'already_set';
5361: } else {
5362: my $start = time;
5363: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5364: $udom,$uname);
5365: if ($putres eq 'ok') {
5366: &put('timerinterval',{"$courseid\0$res"=>$interval},
5367: $udom,$uname);
5368: &appenv(
5369: {
5370: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5371: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5372: }
5373: );
5374: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5375: $cachedtimes{"$courseid\0$res"} = $start;
5376: }
5377: } elsif ($putres ne 'refused') {
5378: &logthis("Result: $putres when attempting to set first access time ".
5379: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5380: }
5381: return $putres;
5382: }
5383: return 'already_set';
5384: }
5385: }
5386:
5387: # --------------------------------------------- Set Expire Date for Spreadsheet
5388:
5389: sub expirespread {
5390: my ($uname,$udom,$stype,$usymb)=@_;
5391: my $cid=$env{'request.course.id'};
5392: if ($cid) {
5393: my $now=time;
5394: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5395: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5396: $env{'course.'.$cid.'.num'}.
5397: ':nohist_expirationdates:'.
5398: &escape($key).'='.$now,
5399: $env{'course.'.$cid.'.home'})
5400: }
5401: return 'ok';
5402: }
5403:
5404: # ----------------------------------------------------- Devalidate Spreadsheets
5405:
5406: sub devalidate {
5407: my ($symb,$uname,$udom)=@_;
5408: my $cid=$env{'request.course.id'};
5409: if ($cid) {
5410: # delete the stored spreadsheets for
5411: # - the student level sheet of this user in course's homespace
5412: # - the assessment level sheet for this resource
5413: # for this user in user's homespace
5414: # - current conditional state info
5415: my $key=$uname.':'.$udom.':';
5416: my $status=
5417: &del('nohist_calculatedsheets',
5418: [$key.'studentcalc:'],
5419: $env{'course.'.$cid.'.domain'},
5420: $env{'course.'.$cid.'.num'})
5421: .' '.
5422: &del('nohist_calculatedsheets_'.$cid,
5423: [$key.'assesscalc:'.$symb],$udom,$uname);
5424: unless ($status eq 'ok ok') {
5425: &logthis('Could not devalidate spreadsheet '.
5426: $uname.' at '.$udom.' for '.
5427: $symb.': '.$status);
5428: }
5429: &delenv('user.state.'.$cid);
5430: }
5431: }
5432:
5433: sub get_scalar {
5434: my ($string,$end) = @_;
5435: my $value;
5436: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5437: $value = $1;
5438: } elsif ($$string =~ s/^([^&]*?)&//) {
5439: $value = $1;
5440: }
5441: return &unescape($value);
5442: }
5443:
5444: sub array2str {
5445: my (@array) = @_;
5446: my $result=&arrayref2str(\@array);
5447: $result=~s/^__ARRAY_REF__//;
5448: $result=~s/__END_ARRAY_REF__$//;
5449: return $result;
5450: }
5451:
5452: sub arrayref2str {
5453: my ($arrayref) = @_;
5454: my $result='__ARRAY_REF__';
5455: foreach my $elem (@$arrayref) {
5456: if(ref($elem) eq 'ARRAY') {
5457: $result.=&arrayref2str($elem).'&';
5458: } elsif(ref($elem) eq 'HASH') {
5459: $result.=&hashref2str($elem).'&';
5460: } elsif(ref($elem)) {
5461: #print("Got a ref of ".(ref($elem))." skipping.");
5462: } else {
5463: $result.=&escape($elem).'&';
5464: }
5465: }
5466: $result=~s/\&$//;
5467: $result .= '__END_ARRAY_REF__';
5468: return $result;
5469: }
5470:
5471: sub hash2str {
5472: my (%hash) = @_;
5473: my $result=&hashref2str(\%hash);
5474: $result=~s/^__HASH_REF__//;
5475: $result=~s/__END_HASH_REF__$//;
5476: return $result;
5477: }
5478:
5479: sub hashref2str {
5480: my ($hashref)=@_;
5481: my $result='__HASH_REF__';
5482: foreach my $key (sort(keys(%$hashref))) {
5483: if (ref($key) eq 'ARRAY') {
5484: $result.=&arrayref2str($key).'=';
5485: } elsif (ref($key) eq 'HASH') {
5486: $result.=&hashref2str($key).'=';
5487: } elsif (ref($key)) {
5488: $result.='=';
5489: #print("Got a ref of ".(ref($key))." skipping.");
5490: } else {
5491: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5492: }
5493:
5494: if(ref($hashref->{$key}) eq 'ARRAY') {
5495: $result.=&arrayref2str($hashref->{$key}).'&';
5496: } elsif(ref($hashref->{$key}) eq 'HASH') {
5497: $result.=&hashref2str($hashref->{$key}).'&';
5498: } elsif(ref($hashref->{$key})) {
5499: $result.='&';
5500: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5501: } else {
5502: $result.=&escape($hashref->{$key}).'&';
5503: }
5504: }
5505: $result=~s/\&$//;
5506: $result .= '__END_HASH_REF__';
5507: return $result;
5508: }
5509:
5510: sub str2hash {
5511: my ($string)=@_;
5512: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5513: return %$hash;
5514: }
5515:
5516: sub str2hashref {
5517: my ($string) = @_;
5518:
5519: my %hash;
5520:
5521: if($string !~ /^__HASH_REF__/) {
5522: if (! ($string eq '' || !defined($string))) {
5523: $hash{'error'}='Not hash reference';
5524: }
5525: return (\%hash, $string);
5526: }
5527:
5528: $string =~ s/^__HASH_REF__//;
5529:
5530: while($string !~ /^__END_HASH_REF__/) {
5531: #key
5532: my $key='';
5533: if($string =~ /^__HASH_REF__/) {
5534: ($key, $string)=&str2hashref($string);
5535: if(defined($key->{'error'})) {
5536: $hash{'error'}='Bad data';
5537: return (\%hash, $string);
5538: }
5539: } elsif($string =~ /^__ARRAY_REF__/) {
5540: ($key, $string)=&str2arrayref($string);
5541: if($key->[0] eq 'Array reference error') {
5542: $hash{'error'}='Bad data';
5543: return (\%hash, $string);
5544: }
5545: } else {
5546: $string =~ s/^(.*?)=//;
5547: $key=&unescape($1);
5548: }
5549: $string =~ s/^=//;
5550:
5551: #value
5552: my $value='';
5553: if($string =~ /^__HASH_REF__/) {
5554: ($value, $string)=&str2hashref($string);
5555: if(defined($value->{'error'})) {
5556: $hash{'error'}='Bad data';
5557: return (\%hash, $string);
5558: }
5559: } elsif($string =~ /^__ARRAY_REF__/) {
5560: ($value, $string)=&str2arrayref($string);
5561: if($value->[0] eq 'Array reference error') {
5562: $hash{'error'}='Bad data';
5563: return (\%hash, $string);
5564: }
5565: } else {
5566: $value=&get_scalar(\$string,'__END_HASH_REF__');
5567: }
5568: $string =~ s/^&//;
5569:
5570: $hash{$key}=$value;
5571: }
5572:
5573: $string =~ s/^__END_HASH_REF__//;
5574:
5575: return (\%hash, $string);
5576: }
5577:
5578: sub str2array {
5579: my ($string)=@_;
5580: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5581: return @$array;
5582: }
5583:
5584: sub str2arrayref {
5585: my ($string) = @_;
5586: my @array;
5587:
5588: if($string !~ /^__ARRAY_REF__/) {
5589: if (! ($string eq '' || !defined($string))) {
5590: $array[0]='Array reference error';
5591: }
5592: return (\@array, $string);
5593: }
5594:
5595: $string =~ s/^__ARRAY_REF__//;
5596:
5597: while($string !~ /^__END_ARRAY_REF__/) {
5598: my $value='';
5599: if($string =~ /^__HASH_REF__/) {
5600: ($value, $string)=&str2hashref($string);
5601: if(defined($value->{'error'})) {
5602: $array[0] ='Array reference error';
5603: return (\@array, $string);
5604: }
5605: } elsif($string =~ /^__ARRAY_REF__/) {
5606: ($value, $string)=&str2arrayref($string);
5607: if($value->[0] eq 'Array reference error') {
5608: $array[0] ='Array reference error';
5609: return (\@array, $string);
5610: }
5611: } else {
5612: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5613: }
5614: $string =~ s/^&//;
5615:
5616: push(@array, $value);
5617: }
5618:
5619: $string =~ s/^__END_ARRAY_REF__//;
5620:
5621: return (\@array, $string);
5622: }
5623:
5624: # -------------------------------------------------------------------Temp Store
5625:
5626: sub tmpreset {
5627: my ($symb,$namespace,$domain,$stuname) = @_;
5628: if (!$symb) {
5629: $symb=&symbread();
5630: if (!$symb) { $symb= $env{'request.url'}; }
5631: }
5632: $symb=escape($symb);
5633:
5634: if (!$namespace) { $namespace=$env{'request.state'}; }
5635: $namespace=~s/\//\_/g;
5636: $namespace=~s/\W//g;
5637:
5638: if (!$domain) { $domain=$env{'user.domain'}; }
5639: if (!$stuname) { $stuname=$env{'user.name'}; }
5640: if ($domain eq 'public' && $stuname eq 'public') {
5641: $stuname=$ENV{'REMOTE_ADDR'};
5642: }
5643: my $path=LONCAPA::tempdir();
5644: my %hash;
5645: if (tie(%hash,'GDBM_File',
5646: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5647: &GDBM_WRCREAT(),0640)) {
5648: foreach my $key (keys(%hash)) {
5649: if ($key=~ /:$symb/) {
5650: delete($hash{$key});
5651: }
5652: }
5653: }
5654: }
5655:
5656: sub tmpstore {
5657: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5658:
5659: if (!$symb) {
5660: $symb=&symbread();
5661: if (!$symb) { $symb= $env{'request.url'}; }
5662: }
5663: $symb=escape($symb);
5664:
5665: if (!$namespace) {
5666: # I don't think we would ever want to store this for a course.
5667: # it seems this will only be used if we don't have a course.
5668: #$namespace=$env{'request.course.id'};
5669: #if (!$namespace) {
5670: $namespace=$env{'request.state'};
5671: #}
5672: }
5673: $namespace=~s/\//\_/g;
5674: $namespace=~s/\W//g;
5675: if (!$domain) { $domain=$env{'user.domain'}; }
5676: if (!$stuname) { $stuname=$env{'user.name'}; }
5677: if ($domain eq 'public' && $stuname eq 'public') {
5678: $stuname=$ENV{'REMOTE_ADDR'};
5679: }
5680: my $now=time;
5681: my %hash;
5682: my $path=LONCAPA::tempdir();
5683: if (tie(%hash,'GDBM_File',
5684: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5685: &GDBM_WRCREAT(),0640)) {
5686: $hash{"version:$symb"}++;
5687: my $version=$hash{"version:$symb"};
5688: my $allkeys='';
5689: foreach my $key (keys(%$storehash)) {
5690: $allkeys.=$key.':';
5691: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5692: }
5693: $hash{"$version:$symb:timestamp"}=$now;
5694: $allkeys.='timestamp';
5695: $hash{"$version:keys:$symb"}=$allkeys;
5696: if (untie(%hash)) {
5697: return 'ok';
5698: } else {
5699: return "error:$!";
5700: }
5701: } else {
5702: return "error:$!";
5703: }
5704: }
5705:
5706: # -----------------------------------------------------------------Temp Restore
5707:
5708: sub tmprestore {
5709: my ($symb,$namespace,$domain,$stuname) = @_;
5710:
5711: if (!$symb) {
5712: $symb=&symbread();
5713: if (!$symb) { $symb= $env{'request.url'}; }
5714: }
5715: $symb=escape($symb);
5716:
5717: if (!$namespace) { $namespace=$env{'request.state'}; }
5718:
5719: if (!$domain) { $domain=$env{'user.domain'}; }
5720: if (!$stuname) { $stuname=$env{'user.name'}; }
5721: if ($domain eq 'public' && $stuname eq 'public') {
5722: $stuname=$ENV{'REMOTE_ADDR'};
5723: }
5724: my %returnhash;
5725: $namespace=~s/\//\_/g;
5726: $namespace=~s/\W//g;
5727: my %hash;
5728: my $path=LONCAPA::tempdir();
5729: if (tie(%hash,'GDBM_File',
5730: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5731: &GDBM_READER(),0640)) {
5732: my $version=$hash{"version:$symb"};
5733: $returnhash{'version'}=$version;
5734: my $scope;
5735: for ($scope=1;$scope<=$version;$scope++) {
5736: my $vkeys=$hash{"$scope:keys:$symb"};
5737: my @keys=split(/:/,$vkeys);
5738: my $key;
5739: $returnhash{"$scope:keys"}=$vkeys;
5740: foreach $key (@keys) {
5741: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5742: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5743: }
5744: }
5745: if (!(untie(%hash))) {
5746: return "error:$!";
5747: }
5748: } else {
5749: return "error:$!";
5750: }
5751: return %returnhash;
5752: }
5753:
5754: # ----------------------------------------------------------------------- Store
5755:
5756: sub store {
5757: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5758: my $home='';
5759:
5760: if ($stuname) { $home=&homeserver($stuname,$domain); }
5761:
5762: $symb=&symbclean($symb);
5763: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5764:
5765: if (!$domain) { $domain=$env{'user.domain'}; }
5766: if (!$stuname) { $stuname=$env{'user.name'}; }
5767:
5768: &devalidate($symb,$stuname,$domain);
5769:
5770: $symb=escape($symb);
5771: if (!$namespace) {
5772: unless ($namespace=$env{'request.course.id'}) {
5773: return '';
5774: }
5775: }
5776: if (!$home) { $home=$env{'user.home'}; }
5777:
5778: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5779: $$storehash{'host'}=$perlvar{'lonHostID'};
5780:
5781: my $namevalue='';
5782: foreach my $key (keys(%$storehash)) {
5783: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5784: }
5785: $namevalue=~s/\&$//;
5786: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5787: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5788: }
5789:
5790: # -------------------------------------------------------------- Critical Store
5791:
5792: sub cstore {
5793: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5794: my $home='';
5795:
5796: if ($stuname) { $home=&homeserver($stuname,$domain); }
5797:
5798: $symb=&symbclean($symb);
5799: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5800:
5801: if (!$domain) { $domain=$env{'user.domain'}; }
5802: if (!$stuname) { $stuname=$env{'user.name'}; }
5803:
5804: &devalidate($symb,$stuname,$domain);
5805:
5806: $symb=escape($symb);
5807: if (!$namespace) {
5808: unless ($namespace=$env{'request.course.id'}) {
5809: return '';
5810: }
5811: }
5812: if (!$home) { $home=$env{'user.home'}; }
5813:
5814: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5815: $$storehash{'host'}=$perlvar{'lonHostID'};
5816:
5817: my $namevalue='';
5818: foreach my $key (keys(%$storehash)) {
5819: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5820: }
5821: $namevalue=~s/\&$//;
5822: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5823: return critical
5824: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5825: }
5826:
5827: # --------------------------------------------------------------------- Restore
5828:
5829: sub restore {
5830: my ($symb,$namespace,$domain,$stuname) = @_;
5831: my $home='';
5832:
5833: if ($stuname) { $home=&homeserver($stuname,$domain); }
5834:
5835: if (!$symb) {
5836: return if ($namespace eq 'courserequests');
5837: unless ($symb=escape(&symbread())) { return ''; }
5838: } else {
5839: unless ($namespace eq 'courserequests') {
5840: $symb=&escape(&symbclean($symb));
5841: }
5842: }
5843: if (!$namespace) {
5844: unless ($namespace=$env{'request.course.id'}) {
5845: return '';
5846: }
5847: }
5848: if (!$domain) { $domain=$env{'user.domain'}; }
5849: if (!$stuname) { $stuname=$env{'user.name'}; }
5850: if (!$home) { $home=$env{'user.home'}; }
5851: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5852:
5853: my %returnhash=();
5854: foreach my $line (split(/\&/,$answer)) {
5855: my ($name,$value)=split(/\=/,$line);
5856: $returnhash{&unescape($name)}=&thaw_unescape($value);
5857: }
5858: my $version;
5859: for ($version=1;$version<=$returnhash{'version'};$version++) {
5860: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5861: $returnhash{$item}=$returnhash{$version.':'.$item};
5862: }
5863: }
5864: return %returnhash;
5865: }
5866:
5867: # ---------------------------------------------------------- Course Description
5868: #
5869: #
5870:
5871: sub coursedescription {
5872: my ($courseid,$args)=@_;
5873: $courseid=~s/^\///;
5874: $courseid=~s/\_/\//g;
5875: my ($cdomain,$cnum)=split(/\//,$courseid);
5876: my $chome=&homeserver($cnum,$cdomain);
5877: my $normalid=$cdomain.'_'.$cnum;
5878: # need to always cache even if we get errors otherwise we keep
5879: # trying and trying and trying to get the course description.
5880: my %envhash=();
5881: my %returnhash=();
5882:
5883: my $expiretime=600;
5884: if ($env{'request.course.id'} eq $normalid) {
5885: $expiretime=120;
5886: }
5887:
5888: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5889: if (!$args->{'freshen_cache'}
5890: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5891: foreach my $key (keys(%env)) {
5892: next if ($key !~ /^\Q$prefix\E(.*)/);
5893: my ($setting) = $1;
5894: $returnhash{$setting} = $env{$key};
5895: }
5896: return %returnhash;
5897: }
5898:
5899: # get the data again
5900:
5901: if (!$args->{'one_time'}) {
5902: $envhash{'course.'.$normalid.'.last_cache'}=time;
5903: }
5904:
5905: if ($chome ne 'no_host') {
5906: %returnhash=&dump('environment',$cdomain,$cnum);
5907: if (!exists($returnhash{'con_lost'})) {
5908: my $username = $env{'user.name'}; # Defult username
5909: if(defined $args->{'user'}) {
5910: $username = $args->{'user'};
5911: }
5912: $returnhash{'home'}= $chome;
5913: $returnhash{'domain'} = $cdomain;
5914: $returnhash{'num'} = $cnum;
5915: if (!defined($returnhash{'type'})) {
5916: $returnhash{'type'} = 'Course';
5917: }
5918: while (my ($name,$value) = each %returnhash) {
5919: $envhash{'course.'.$normalid.'.'.$name}=$value;
5920: }
5921: $returnhash{'url'}=&clutter($returnhash{'url'});
5922: $returnhash{'fn'}=LONCAPA::tempdir() .
5923: $username.'_'.$cdomain.'_'.$cnum;
5924: $envhash{'course.'.$normalid.'.home'}=$chome;
5925: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5926: $envhash{'course.'.$normalid.'.num'}=$cnum;
5927: }
5928: }
5929: if (!$args->{'one_time'}) {
5930: &appenv(\%envhash);
5931: }
5932: return %returnhash;
5933: }
5934:
5935: sub update_released_required {
5936: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5937: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5938: $cid = $env{'request.course.id'};
5939: $cdom = $env{'course.'.$cid.'.domain'};
5940: $cnum = $env{'course.'.$cid.'.num'};
5941: $chome = $env{'course.'.$cid.'.home'};
5942: }
5943: if ($needsrelease) {
5944: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5945: my $needsupdate;
5946: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5947: $needsupdate = 1;
5948: } else {
5949: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5950: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5951: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5952: $needsupdate = 1;
5953: }
5954: }
5955: if ($needsupdate) {
5956: my %needshash = (
5957: 'internal.releaserequired' => $needsrelease,
5958: );
5959: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5960: if ($putresult eq 'ok') {
5961: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5962: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5963: if (ref($crsinfo{$cid}) eq 'HASH') {
5964: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5965: &courseidput($cdom,\%crsinfo,$chome,'notime');
5966: }
5967: }
5968: }
5969: }
5970: return;
5971: }
5972:
5973: # -------------------------------------------------See if a user is privileged
5974:
5975: sub privileged {
5976: my ($username,$domain,$possdomains,$possroles)=@_;
5977: my $now = time;
5978: my $roles;
5979: if (ref($possroles) eq 'ARRAY') {
5980: $roles = $possroles;
5981: } else {
5982: $roles = ['dc','su'];
5983: }
5984: if (ref($possdomains) eq 'ARRAY') {
5985: my %privileged = &privileged_by_domain($possdomains,$roles);
5986: foreach my $dom (@{$possdomains}) {
5987: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5988: (ref($privileged{$dom}) eq 'HASH')) {
5989: foreach my $role (@{$roles}) {
5990: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5991: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5992: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5993: return 1 unless (($end && $end < $now) ||
5994: ($start && $start > $now));
5995: }
5996: }
5997: }
5998: }
5999: }
6000: } else {
6001: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6002: my $now = time;
6003:
6004: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6005: my ($trole, $tend, $tstart) = split(/_/, $role);
6006: if (grep(/^\Q$trole\E$/,@{$roles})) {
6007: return 1 unless ($tend && $tend < $now)
6008: or ($tstart && $tstart > $now);
6009: }
6010: }
6011: }
6012: return 0;
6013: }
6014:
6015: sub privileged_by_domain {
6016: my ($domains,$roles) = @_;
6017: my %privileged = ();
6018: my $cachetime = 60*60*24;
6019: my $now = time;
6020: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6021: return %privileged;
6022: }
6023: foreach my $dom (@{$domains}) {
6024: next if (ref($privileged{$dom}) eq 'HASH');
6025: my $needroles;
6026: foreach my $role (@{$roles}) {
6027: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6028: if (defined($cached)) {
6029: if (ref($result) eq 'HASH') {
6030: $privileged{$dom}{$role} = $result;
6031: }
6032: } else {
6033: $needroles = 1;
6034: }
6035: }
6036: if ($needroles) {
6037: my %dompersonnel = &get_domain_roles($dom,$roles);
6038: $privileged{$dom} = {};
6039: foreach my $server (keys(%dompersonnel)) {
6040: if (ref($dompersonnel{$server}) eq 'HASH') {
6041: foreach my $item (keys(%{$dompersonnel{$server}})) {
6042: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6043: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6044: next if ($end && $end < $now);
6045: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6046: $dompersonnel{$server}{$item};
6047: }
6048: }
6049: }
6050: if (ref($privileged{$dom}) eq 'HASH') {
6051: foreach my $role (@{$roles}) {
6052: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6053: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6054: } else {
6055: my %hash = ();
6056: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6057: }
6058: }
6059: }
6060: }
6061: }
6062: return %privileged;
6063: }
6064:
6065: # -------------------------------------------------------- Get user privileges
6066:
6067: sub rolesinit {
6068: my ($domain, $username) = @_;
6069: my %userroles = ('user.login.time' => time);
6070: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6071:
6072: # firstaccess and timerinterval are related to timed maps/resources.
6073: # also, blocking can be triggered by an activating timer
6074: # it's saved in the user's %env.
6075: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6076: my %timerinterval = &dump('timerinterval', $domain, $username);
6077: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6078: %timerintchk, %timerintenv);
6079:
6080: foreach my $key (keys(%firstaccess)) {
6081: my ($cid, $rest) = split(/\0/, $key);
6082: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6083: }
6084:
6085: foreach my $key (keys(%timerinterval)) {
6086: my ($cid,$rest) = split(/\0/,$key);
6087: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6088: }
6089:
6090: my %allroles=();
6091: my %allgroups=();
6092:
6093: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6094: my $role = $rolesdump{$area};
6095: $area =~ s/\_\w\w$//;
6096:
6097: my ($trole, $tend, $tstart, $group_privs);
6098:
6099: if ($role =~ /^cr/) {
6100: # Custom role, defined by a user
6101: # e.g., user.role.cr/msu/smith/mynewrole
6102: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6103: $trole = $1;
6104: ($tend, $tstart) = split('_', $2);
6105: } else {
6106: $trole = $role;
6107: }
6108: } elsif ($role =~ m|^gr/|) {
6109: # Role of member in a group, defined within a course/community
6110: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6111: ($trole, $tend, $tstart) = split(/_/, $role);
6112: next if $tstart eq '-1';
6113: ($trole, $group_privs) = split(/\//, $trole);
6114: $group_privs = &unescape($group_privs);
6115: } else {
6116: # Just a normal role, defined in roles.tab
6117: ($trole, $tend, $tstart) = split(/_/,$role);
6118: }
6119:
6120: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6121: $username);
6122: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6123:
6124: # role expired or not available yet?
6125: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6126: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6127:
6128: next if $area eq '' or $trole eq '';
6129:
6130: my $spec = "$trole.$area";
6131: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6132:
6133: if ($trole =~ /^cr\//) {
6134: # Custom role, defined by a user
6135: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6136: } elsif ($trole eq 'gr') {
6137: # Role of a member in a group, defined within a course/community
6138: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6139: next;
6140: } else {
6141: # Normal role, defined in roles.tab
6142: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6143: }
6144:
6145: my $cid = $tdomain.'_'.$trest;
6146: unless ($firstaccchk{$cid}) {
6147: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6148: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6149: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6150: $coursetimerstarts{$cid}{$item};
6151: }
6152: }
6153: $firstaccchk{$cid} = 1;
6154: }
6155: unless ($timerintchk{$cid}) {
6156: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6157: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6158: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6159: $coursetimerintervals{$cid}{$item};
6160: }
6161: }
6162: $timerintchk{$cid} = 1;
6163: }
6164: }
6165:
6166: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6167: \%allroles, \%allgroups);
6168: $env{'user.adv'} = $userroles{'user.adv'};
6169: $env{'user.rar'} = $userroles{'user.rar'};
6170:
6171: return (\%userroles,\%firstaccenv,\%timerintenv);
6172: }
6173:
6174: sub set_arearole {
6175: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6176: unless ($nolog) {
6177: # log the associated role with the area
6178: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6179: }
6180: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6181: }
6182:
6183: sub custom_roleprivs {
6184: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6185: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6186: my $homsvr = &homeserver($rauthor,$rdomain);
6187: if (&hostname($homsvr) ne '') {
6188: my ($rdummy,$roledef)=
6189: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6190: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6191: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6192: if (defined($syspriv)) {
6193: if ($trest =~ /^$match_community$/) {
6194: $syspriv =~ s/bre\&S//;
6195: }
6196: $$allroles{'cm./'}.=':'.$syspriv;
6197: $$allroles{$spec.'./'}.=':'.$syspriv;
6198: }
6199: if ($tdomain ne '') {
6200: if (defined($dompriv)) {
6201: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6202: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6203: }
6204: if (($trest ne '') && (defined($coursepriv))) {
6205: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6206: my $rolename = $1;
6207: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6208: }
6209: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6210: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6211: }
6212: }
6213: }
6214: }
6215: }
6216:
6217: sub course_adhocrole_privs {
6218: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6219: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6220: if ($overrides{"internal.adhocpriv.$rolename"}) {
6221: my (%currprivs,%storeprivs);
6222: foreach my $item (split(/:/,$coursepriv)) {
6223: my ($priv,$restrict) = split(/\&/,$item);
6224: $currprivs{$priv} = $restrict;
6225: }
6226: my (%possadd,%possremove,%full);
6227: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6228: my ($priv,$restrict)=split(/\&/,$item);
6229: $full{$priv} = $restrict;
6230: }
6231: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6232: next if ($item eq '');
6233: my ($rule,$rest) = split(/=/,$item);
6234: next unless (($rule eq 'off') || ($rule eq 'on'));
6235: foreach my $priv (split(/:/,$rest)) {
6236: if ($priv ne '') {
6237: if ($rule eq 'off') {
6238: $possremove{$priv} = 1;
6239: } else {
6240: $possadd{$priv} = 1;
6241: }
6242: }
6243: }
6244: }
6245: foreach my $priv (sort(keys(%full))) {
6246: if (exists($currprivs{$priv})) {
6247: unless (exists($possremove{$priv})) {
6248: $storeprivs{$priv} = $currprivs{$priv};
6249: }
6250: } elsif (exists($possadd{$priv})) {
6251: $storeprivs{$priv} = $full{$priv};
6252: }
6253: }
6254: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6255: }
6256: return $coursepriv;
6257: }
6258:
6259: sub group_roleprivs {
6260: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6261: my $access = 1;
6262: my $now = time;
6263: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6264: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6265: if ($access) {
6266: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6267: $$allgroups{$course}{$group} .=':'.$group_privs;
6268: }
6269: }
6270:
6271: sub standard_roleprivs {
6272: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6273: if (defined($pr{$trole.':s'})) {
6274: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6275: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6276: }
6277: if ($tdomain ne '') {
6278: if (defined($pr{$trole.':d'})) {
6279: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6280: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6281: }
6282: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6283: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6284: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6285: }
6286: }
6287: }
6288:
6289: sub set_userprivs {
6290: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6291: my $author=0;
6292: my $adv=0;
6293: my $rar=0;
6294: my %grouproles = ();
6295: if (keys(%{$allgroups}) > 0) {
6296: my @groupkeys;
6297: foreach my $role (keys(%{$allroles})) {
6298: push(@groupkeys,$role);
6299: }
6300: if (ref($groups_roles) eq 'HASH') {
6301: foreach my $key (keys(%{$groups_roles})) {
6302: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6303: push(@groupkeys,$key);
6304: }
6305: }
6306: }
6307: if (@groupkeys > 0) {
6308: foreach my $role (@groupkeys) {
6309: my ($trole,$area,$sec,$extendedarea);
6310: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6311: $trole = $1;
6312: $area = $2;
6313: $sec = $3;
6314: $extendedarea = $area.$sec;
6315: if (exists($$allgroups{$area})) {
6316: foreach my $group (keys(%{$$allgroups{$area}})) {
6317: my $spec = $trole.'.'.$extendedarea;
6318: $grouproles{$spec.'.'.$area.'/'.$group} =
6319: $$allgroups{$area}{$group};
6320: }
6321: }
6322: }
6323: }
6324: }
6325: }
6326: foreach my $group (keys(%grouproles)) {
6327: $$allroles{$group} = $grouproles{$group};
6328: }
6329: foreach my $role (keys(%{$allroles})) {
6330: my %thesepriv;
6331: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6332: foreach my $item (split(/:/,$$allroles{$role})) {
6333: if ($item ne '') {
6334: my ($privilege,$restrictions)=split(/&/,$item);
6335: if ($restrictions eq '') {
6336: $thesepriv{$privilege}='F';
6337: } elsif ($thesepriv{$privilege} ne 'F') {
6338: $thesepriv{$privilege}.=$restrictions;
6339: }
6340: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6341: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6342: }
6343: }
6344: my $thesestr='';
6345: foreach my $priv (sort(keys(%thesepriv))) {
6346: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6347: }
6348: $userroles->{'user.priv.'.$role} = $thesestr;
6349: }
6350: return ($author,$adv,$rar);
6351: }
6352:
6353: sub role_status {
6354: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6355: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6356: my ($one,$two) = split(m{\./},$rolekey,2);
6357: (undef,undef,$$role) = split(/\./,$one,3);
6358: unless (!defined($$role) || $$role eq '') {
6359: $$where = '/'.$two;
6360: $$trolecode=$$role.'.'.$$where;
6361: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6362: $$tstatus='is';
6363: if ($$tstart && $$tstart>$update) {
6364: $$tstatus='future';
6365: if ($$tstart<$now) {
6366: if ($$tstart && $$tstart>$refresh) {
6367: if (($$where ne '') && ($$role ne '')) {
6368: my (%allroles,%allgroups,$group_privs,
6369: %groups_roles,@rolecodes);
6370: my %userroles = (
6371: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6372: );
6373: @rolecodes = ('cm');
6374: my $spec=$$role.'.'.$$where;
6375: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6376: if ($$role =~ /^cr\//) {
6377: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6378: push(@rolecodes,'cr');
6379: } elsif ($$role eq 'gr') {
6380: push(@rolecodes,$$role);
6381: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6382: $env{'user.name'});
6383: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6384: (undef,my $group_privs) = split(/\//,$trole);
6385: $group_privs = &unescape($group_privs);
6386: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6387: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6388: &get_groups_roles($tdomain,$trest,
6389: \%course_roles,\@rolecodes,
6390: \%groups_roles);
6391: } else {
6392: push(@rolecodes,$$role);
6393: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6394: }
6395: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6396: \%groups_roles);
6397: &appenv(\%userroles,\@rolecodes);
6398: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6399: }
6400: }
6401: $$tstatus = 'is';
6402: }
6403: }
6404: if ($$tend) {
6405: if ($$tend<$update) {
6406: $$tstatus='expired';
6407: } elsif ($$tend<$now) {
6408: $$tstatus='will_not';
6409: }
6410: }
6411: }
6412: }
6413: }
6414:
6415: sub get_groups_roles {
6416: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6417: return unless((ref($cdom_courseroles) eq 'HASH') &&
6418: (ref($rolecodes) eq 'ARRAY') &&
6419: (ref($groups_roles) eq 'HASH'));
6420: if (keys(%{$cdom_courseroles}) > 0) {
6421: my ($cnum) = ($rest =~ /^($match_courseid)/);
6422: if ($cdom ne '' && $cnum ne '') {
6423: foreach my $key (keys(%{$cdom_courseroles})) {
6424: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6425: my $crsrole = $1;
6426: my $crssec = $2;
6427: if ($crsrole =~ /^cr/) {
6428: unless (grep(/^cr$/,@{$rolecodes})) {
6429: push(@{$rolecodes},'cr');
6430: }
6431: } else {
6432: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6433: push(@{$rolecodes},$crsrole);
6434: }
6435: }
6436: my $rolekey = "$crsrole./$cdom/$cnum";
6437: if ($crssec ne '') {
6438: $rolekey .= "/$crssec";
6439: }
6440: $rolekey .= './';
6441: $groups_roles->{$rolekey} = $rolecodes;
6442: }
6443: }
6444: }
6445: }
6446: return;
6447: }
6448:
6449: sub delete_env_groupprivs {
6450: my ($where,$courseroles,$possroles) = @_;
6451: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6452: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6453: unless (ref($courseroles->{$udom}) eq 'HASH') {
6454: %{$courseroles->{$udom}} =
6455: &get_my_roles('','','userroles',['active'],
6456: $possroles,[$udom],1);
6457: }
6458: if (ref($courseroles->{$udom}) eq 'HASH') {
6459: foreach my $item (keys(%{$courseroles->{$udom}})) {
6460: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6461: my $area = '/'.$cdom.'/'.$cnum;
6462: my $privkey = "user.priv.$crsrole.$area";
6463: if ($crssec ne '') {
6464: $privkey .= '/'.$crssec;
6465: }
6466: $privkey .= ".$area/$group";
6467: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6468: }
6469: }
6470: return;
6471: }
6472:
6473: sub check_adhoc_privs {
6474: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6475: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6476: if ($sec) {
6477: $cckey .= '/'.$sec;
6478: }
6479: my $setprivs;
6480: if ($env{$cckey}) {
6481: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6482: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6483: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6484: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6485: $setprivs = 1;
6486: }
6487: } else {
6488: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6489: $setprivs = 1;
6490: }
6491: return $setprivs;
6492: }
6493:
6494: sub set_adhoc_privileges {
6495: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6496: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6497: my $area = '/'.$dcdom.'/'.$pickedcourse;
6498: if ($sec ne '') {
6499: $area .= '/'.$sec;
6500: }
6501: my $spec = $role.'.'.$area;
6502: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6503: $env{'user.name'},1);
6504: my %rolehash = ();
6505: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6506: my $rolename = $1;
6507: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6508: my %domdef = &get_domain_defaults($dcdom);
6509: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6510: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6511: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6512: }
6513: }
6514: } else {
6515: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6516: }
6517: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6518: &appenv(\%userroles,[$role,'cm']);
6519: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6520: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6521: &appenv( {'request.role' => $spec,
6522: 'request.role.domain' => $dcdom,
6523: 'request.course.sec' => $sec,
6524: }
6525: );
6526: my $tadv=0;
6527: if (&allowed('adv') eq 'F') { $tadv=1; }
6528: &appenv({'request.role.adv' => $tadv});
6529: }
6530: }
6531:
6532: # --------------------------------------------------------------- get interface
6533:
6534: sub get {
6535: my ($namespace,$storearr,$udomain,$uname)=@_;
6536: my $items='';
6537: foreach my $item (@$storearr) {
6538: $items.=&escape($item).'&';
6539: }
6540: $items=~s/\&$//;
6541: if (!$udomain) { $udomain=$env{'user.domain'}; }
6542: if (!$uname) { $uname=$env{'user.name'}; }
6543: my $uhome=&homeserver($uname,$udomain);
6544:
6545: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6546: my @pairs=split(/\&/,$rep);
6547: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6548: return @pairs;
6549: }
6550: my %returnhash=();
6551: my $i=0;
6552: foreach my $item (@$storearr) {
6553: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6554: $i++;
6555: }
6556: return %returnhash;
6557: }
6558:
6559: # --------------------------------------------------------------- del interface
6560:
6561: sub del {
6562: my ($namespace,$storearr,$udomain,$uname)=@_;
6563: my $items='';
6564: foreach my $item (@$storearr) {
6565: $items.=&escape($item).'&';
6566: }
6567:
6568: $items=~s/\&$//;
6569: if (!$udomain) { $udomain=$env{'user.domain'}; }
6570: if (!$uname) { $uname=$env{'user.name'}; }
6571: my $uhome=&homeserver($uname,$udomain);
6572: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6573: }
6574:
6575: # -------------------------------------------------------------- dump interface
6576:
6577: sub unserialize {
6578: my ($rep, $escapedkeys) = @_;
6579:
6580: return {} if $rep =~ /^error/;
6581:
6582: my %returnhash=();
6583: foreach my $item (split(/\&/,$rep)) {
6584: my ($key, $value) = split(/=/, $item, 2);
6585: $key = unescape($key) unless $escapedkeys;
6586: next if $key =~ /^error: 2 /;
6587: $returnhash{$key} = &thaw_unescape($value);
6588: }
6589: #return %returnhash;
6590: return \%returnhash;
6591: }
6592:
6593: # see Lond::dump_with_regexp
6594: # if $escapedkeys hash keys won't get unescaped.
6595: sub dump {
6596: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6597: if (!$udomain) { $udomain=$env{'user.domain'}; }
6598: if (!$uname) { $uname=$env{'user.name'}; }
6599: my $uhome=&homeserver($uname,$udomain);
6600:
6601: if ($regexp) {
6602: $regexp=&escape($regexp);
6603: } else {
6604: $regexp='.';
6605: }
6606: if (grep { $_ eq $uhome } current_machine_ids()) {
6607: # user is hosted on this machine
6608: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6609: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6610: return %{unserialize($reply, $escapedkeys)};
6611: }
6612: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6613: my @pairs=split(/\&/,$rep);
6614: my %returnhash=();
6615: if (!($rep =~ /^error/ )) {
6616: foreach my $item (@pairs) {
6617: my ($key,$value)=split(/=/,$item,2);
6618: $key = unescape($key) unless $escapedkeys;
6619: #$key = &unescape($key);
6620: next if ($key =~ /^error: 2 /);
6621: $returnhash{$key}=&thaw_unescape($value);
6622: }
6623: }
6624: return %returnhash;
6625: }
6626:
6627:
6628: # --------------------------------------------------------- dumpstore interface
6629:
6630: sub dumpstore {
6631: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6632: # same as dump but keys must be escaped. They may contain colon separated
6633: # lists of values that may themself contain colons (e.g. symbs).
6634: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6635: }
6636:
6637: # -------------------------------------------------------------- keys interface
6638:
6639: sub getkeys {
6640: my ($namespace,$udomain,$uname)=@_;
6641: if (!$udomain) { $udomain=$env{'user.domain'}; }
6642: if (!$uname) { $uname=$env{'user.name'}; }
6643: my $uhome=&homeserver($uname,$udomain);
6644: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6645: my @keyarray=();
6646: foreach my $key (split(/\&/,$rep)) {
6647: next if ($key =~ /^error: 2 /);
6648: push(@keyarray,&unescape($key));
6649: }
6650: return @keyarray;
6651: }
6652:
6653: # --------------------------------------------------------------- currentdump
6654: sub currentdump {
6655: my ($courseid,$sdom,$sname)=@_;
6656: $courseid = $env{'request.course.id'} if (! defined($courseid));
6657: $sdom = $env{'user.domain'} if (! defined($sdom));
6658: $sname = $env{'user.name'} if (! defined($sname));
6659: my $uhome = &homeserver($sname,$sdom);
6660: my $rep;
6661:
6662: if (grep { $_ eq $uhome } current_machine_ids()) {
6663: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6664: $courseid)));
6665: } else {
6666: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6667: }
6668:
6669: return if ($rep =~ /^(error:|no_such_host)/);
6670: #
6671: my %returnhash=();
6672: #
6673: if ($rep eq 'unknown_cmd') {
6674: # an old lond will not know currentdump
6675: # Do a dump and make it look like a currentdump
6676: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6677: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6678: my %hash = @tmp;
6679: @tmp=();
6680: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6681: } else {
6682: my @pairs=split(/\&/,$rep);
6683: foreach my $pair (@pairs) {
6684: my ($key,$value)=split(/=/,$pair,2);
6685: my ($symb,$param) = split(/:/,$key);
6686: $returnhash{&unescape($symb)}->{&unescape($param)} =
6687: &thaw_unescape($value);
6688: }
6689: }
6690: return %returnhash;
6691: }
6692:
6693: sub convert_dump_to_currentdump{
6694: my %hash = %{shift()};
6695: my %returnhash;
6696: # Code ripped from lond, essentially. The only difference
6697: # here is the unescaping done by lonnet::dump(). Conceivably
6698: # we might run in to problems with parameter names =~ /^v\./
6699: while (my ($key,$value) = each(%hash)) {
6700: my ($v,$symb,$param) = split(/:/,$key);
6701: $symb = &unescape($symb);
6702: $param = &unescape($param);
6703: next if ($v eq 'version' || $symb eq 'keys');
6704: next if (exists($returnhash{$symb}) &&
6705: exists($returnhash{$symb}->{$param}) &&
6706: $returnhash{$symb}->{'v.'.$param} > $v);
6707: $returnhash{$symb}->{$param}=$value;
6708: $returnhash{$symb}->{'v.'.$param}=$v;
6709: }
6710: #
6711: # Remove all of the keys in the hashes which keep track of
6712: # the version of the parameter.
6713: while (my ($symb,$param_hash) = each(%returnhash)) {
6714: # use a foreach because we are going to delete from the hash.
6715: foreach my $key (keys(%$param_hash)) {
6716: delete($param_hash->{$key}) if ($key =~ /^v\./);
6717: }
6718: }
6719: return \%returnhash;
6720: }
6721:
6722: # ------------------------------------------------------ critical inc interface
6723:
6724: sub cinc {
6725: return &inc(@_,'critical');
6726: }
6727:
6728: # --------------------------------------------------------------- inc interface
6729:
6730: sub inc {
6731: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6732: if (!$udomain) { $udomain=$env{'user.domain'}; }
6733: if (!$uname) { $uname=$env{'user.name'}; }
6734: my $uhome=&homeserver($uname,$udomain);
6735: my $items='';
6736: if (! ref($store)) {
6737: # got a single value, so use that instead
6738: $items = &escape($store).'=&';
6739: } elsif (ref($store) eq 'SCALAR') {
6740: $items = &escape($$store).'=&';
6741: } elsif (ref($store) eq 'ARRAY') {
6742: $items = join('=&',map {&escape($_);} @{$store});
6743: } elsif (ref($store) eq 'HASH') {
6744: while (my($key,$value) = each(%{$store})) {
6745: $items.= &escape($key).'='.&escape($value).'&';
6746: }
6747: }
6748: $items=~s/\&$//;
6749: if ($critical) {
6750: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6751: } else {
6752: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6753: }
6754: }
6755:
6756: # --------------------------------------------------------------- put interface
6757:
6758: sub put {
6759: my ($namespace,$storehash,$udomain,$uname)=@_;
6760: if (!$udomain) { $udomain=$env{'user.domain'}; }
6761: if (!$uname) { $uname=$env{'user.name'}; }
6762: my $uhome=&homeserver($uname,$udomain);
6763: my $items='';
6764: foreach my $item (keys(%$storehash)) {
6765: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6766: }
6767: $items=~s/\&$//;
6768: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6769: }
6770:
6771: # ------------------------------------------------------------ newput interface
6772:
6773: sub newput {
6774: my ($namespace,$storehash,$udomain,$uname)=@_;
6775: if (!$udomain) { $udomain=$env{'user.domain'}; }
6776: if (!$uname) { $uname=$env{'user.name'}; }
6777: my $uhome=&homeserver($uname,$udomain);
6778: my $items='';
6779: foreach my $key (keys(%$storehash)) {
6780: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6781: }
6782: $items=~s/\&$//;
6783: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6784: }
6785:
6786: # --------------------------------------------------------- putstore interface
6787:
6788: sub putstore {
6789: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6790: if (!$udomain) { $udomain=$env{'user.domain'}; }
6791: if (!$uname) { $uname=$env{'user.name'}; }
6792: my $uhome=&homeserver($uname,$udomain);
6793: my $items='';
6794: foreach my $key (keys(%$storehash)) {
6795: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6796: }
6797: $items=~s/\&$//;
6798: my $esc_symb=&escape($symb);
6799: my $esc_v=&escape($version);
6800: my $reply =
6801: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6802: $uhome);
6803: if (($tolog) && ($reply eq 'ok')) {
6804: my $namevalue='';
6805: foreach my $key (keys(%{$storehash})) {
6806: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6807: }
6808: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6809: '&host='.&escape($perlvar{'lonHostID'}).
6810: '&version='.$esc_v.
6811: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6812: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6813: }
6814: if ($reply eq 'unknown_cmd') {
6815: # gfall back to way things use to be done
6816: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6817: $uname);
6818: }
6819: return $reply;
6820: }
6821:
6822: sub old_putstore {
6823: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6824: if (!$udomain) { $udomain=$env{'user.domain'}; }
6825: if (!$uname) { $uname=$env{'user.name'}; }
6826: my $uhome=&homeserver($uname,$udomain);
6827: my %newstorehash;
6828: foreach my $item (keys(%$storehash)) {
6829: my $key = $version.':'.&escape($symb).':'.$item;
6830: $newstorehash{$key} = $storehash->{$item};
6831: }
6832: my $items='';
6833: my %allitems = ();
6834: foreach my $item (keys(%newstorehash)) {
6835: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6836: my $key = $1.':keys:'.$2;
6837: $allitems{$key} .= $3.':';
6838: }
6839: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6840: }
6841: foreach my $item (keys(%allitems)) {
6842: $allitems{$item} =~ s/\:$//;
6843: $items.= $item.'='.$allitems{$item}.'&';
6844: }
6845: $items=~s/\&$//;
6846: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6847: }
6848:
6849: # ------------------------------------------------------ critical put interface
6850:
6851: sub cput {
6852: my ($namespace,$storehash,$udomain,$uname)=@_;
6853: if (!$udomain) { $udomain=$env{'user.domain'}; }
6854: if (!$uname) { $uname=$env{'user.name'}; }
6855: my $uhome=&homeserver($uname,$udomain);
6856: my $items='';
6857: foreach my $item (keys(%$storehash)) {
6858: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6859: }
6860: $items=~s/\&$//;
6861: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6862: }
6863:
6864: # -------------------------------------------------------------- eget interface
6865:
6866: sub eget {
6867: my ($namespace,$storearr,$udomain,$uname)=@_;
6868: my $items='';
6869: foreach my $item (@$storearr) {
6870: $items.=&escape($item).'&';
6871: }
6872: $items=~s/\&$//;
6873: if (!$udomain) { $udomain=$env{'user.domain'}; }
6874: if (!$uname) { $uname=$env{'user.name'}; }
6875: my $uhome=&homeserver($uname,$udomain);
6876: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6877: my @pairs=split(/\&/,$rep);
6878: my %returnhash=();
6879: my $i=0;
6880: foreach my $item (@$storearr) {
6881: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6882: $i++;
6883: }
6884: return %returnhash;
6885: }
6886:
6887: # ------------------------------------------------------------ tmpput interface
6888: sub tmpput {
6889: my ($storehash,$server,$context)=@_;
6890: my $items='';
6891: foreach my $item (keys(%$storehash)) {
6892: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6893: }
6894: $items=~s/\&$//;
6895: if (defined($context)) {
6896: $items .= ':'.&escape($context);
6897: }
6898: return &reply("tmpput:$items",$server);
6899: }
6900:
6901: # ------------------------------------------------------------ tmpget interface
6902: sub tmpget {
6903: my ($token,$server)=@_;
6904: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6905: my $rep=&reply("tmpget:$token",$server);
6906: my %returnhash;
6907: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6908: return %returnhash;
6909: }
6910: foreach my $item (split(/\&/,$rep)) {
6911: my ($key,$value)=split(/=/,$item);
6912: $returnhash{&unescape($key)}=&thaw_unescape($value);
6913: }
6914: return %returnhash;
6915: }
6916:
6917: # ------------------------------------------------------------ tmpdel interface
6918: sub tmpdel {
6919: my ($token,$server)=@_;
6920: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6921: return &reply("tmpdel:$token",$server);
6922: }
6923:
6924: # ------------------------------------------------------------ get_timebased_id
6925:
6926: sub get_timebased_id {
6927: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6928: $maxtries) = @_;
6929: my ($newid,$error,$dellock);
6930: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6931: return ('','ok','invalid call to get suffix');
6932: }
6933:
6934: # set defaults for any optional args for which values were not supplied
6935: if ($who eq '') {
6936: $who = $env{'user.name'}.':'.$env{'user.domain'};
6937: }
6938: if (!$locktries) {
6939: $locktries = 3;
6940: }
6941: if (!$maxtries) {
6942: $maxtries = 10;
6943: }
6944:
6945: if (($cdom eq '') || ($cnum eq '')) {
6946: if ($env{'request.course.id'}) {
6947: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6948: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6949: }
6950: if (($cdom eq '') || ($cnum eq '')) {
6951: return ('','ok','call to get suffix not in course context');
6952: }
6953: }
6954:
6955: # construct locking item
6956: my $lockhash = {
6957: $prefix."\0".'locked_'.$keyid => $who,
6958: };
6959: my $tries = 0;
6960:
6961: # attempt to get lock on nohist_$namespace file
6962: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6963: while (($gotlock ne 'ok') && $tries <$locktries) {
6964: $tries ++;
6965: sleep 1;
6966: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6967: }
6968:
6969: # attempt to get unique identifier, based on current timestamp
6970: if ($gotlock eq 'ok') {
6971: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6972: my $id = time;
6973: $newid = $id;
6974: if ($idtype eq 'addcode') {
6975: $newid .= &sixnum_code();
6976: }
6977: my $idtries = 0;
6978: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6979: if ($idtype eq 'concat') {
6980: $newid = $id.$idtries;
6981: } elsif ($idtype eq 'addcode') {
6982: $newid = $newid.&sixnum_code();
6983: } else {
6984: $newid ++;
6985: }
6986: $idtries ++;
6987: }
6988: if (!exists($inuse{$prefix."\0".$newid})) {
6989: my %new_item = (
6990: $prefix."\0".$newid => $who,
6991: );
6992: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6993: $cdom,$cnum);
6994: if ($putresult ne 'ok') {
6995: undef($newid);
6996: $error = 'error saving new item: '.$putresult;
6997: }
6998: } else {
6999: undef($newid);
7000: $error = ('error: no unique suffix available for the new item ');
7001: }
7002: # remove lock
7003: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7004: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7005: } else {
7006: $error = "error: could not obtain lockfile\n";
7007: $dellock = 'ok';
7008: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7009: $dellock = 'nolock';
7010: }
7011: }
7012: return ($newid,$dellock,$error);
7013: }
7014:
7015: sub sixnum_code {
7016: my $code;
7017: for (0..6) {
7018: $code .= int( rand(9) );
7019: }
7020: return $code;
7021: }
7022:
7023: # -------------------------------------------------- portfolio access checking
7024:
7025: sub portfolio_access {
7026: my ($requrl,$clientip) = @_;
7027: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7028: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7029: if ($result) {
7030: my %setters;
7031: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7032: my ($startblock,$endblock) =
7033: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7034: if ($startblock && $endblock) {
7035: return 'B';
7036: }
7037: } else {
7038: my ($startblock,$endblock) =
7039: &Apache::loncommon::blockcheck(\%setters,'port');
7040: if ($startblock && $endblock) {
7041: return 'B';
7042: }
7043: }
7044: }
7045: if ($result eq 'ok') {
7046: return 'F';
7047: } elsif ($result =~ /^[^:]+:guest_/) {
7048: return 'A';
7049: }
7050: return '';
7051: }
7052:
7053: sub get_portfolio_access {
7054: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7055:
7056: if (!ref($access_hash)) {
7057: my $current_perms = &get_portfile_permissions($udom,$unum);
7058: my %access_controls = &get_access_controls($current_perms,$group,
7059: $file_name);
7060: $access_hash = $access_controls{$file_name};
7061: }
7062:
7063: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7064: my $now = time;
7065: if (ref($access_hash) eq 'HASH') {
7066: foreach my $key (keys(%{$access_hash})) {
7067: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7068: if ($start > $now) {
7069: next;
7070: }
7071: if ($end && $end<$now) {
7072: next;
7073: }
7074: if ($scope eq 'public') {
7075: $public = $key;
7076: last;
7077: } elsif ($scope eq 'guest') {
7078: $guest = $key;
7079: } elsif ($scope eq 'domains') {
7080: push(@domains,$key);
7081: } elsif ($scope eq 'users') {
7082: push(@users,$key);
7083: } elsif ($scope eq 'course') {
7084: push(@courses,$key);
7085: } elsif ($scope eq 'group') {
7086: push(@groups,$key);
7087: } elsif ($scope eq 'ip') {
7088: push(@ips,$key);
7089: }
7090: }
7091: if ($public) {
7092: return 'ok';
7093: } elsif (@ips > 0) {
7094: my $allowed;
7095: foreach my $ipkey (@ips) {
7096: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7097: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7098: $allowed = 1;
7099: last;
7100: }
7101: }
7102: }
7103: if ($allowed) {
7104: return 'ok';
7105: }
7106: }
7107: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7108: if ($guest) {
7109: return $guest;
7110: }
7111: } else {
7112: if (@domains > 0) {
7113: foreach my $domkey (@domains) {
7114: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7115: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7116: return 'ok';
7117: }
7118: }
7119: }
7120: }
7121: if (@users > 0) {
7122: foreach my $userkey (@users) {
7123: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7124: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7125: if (ref($item) eq 'HASH') {
7126: if (($item->{'uname'} eq $env{'user.name'}) &&
7127: ($item->{'udom'} eq $env{'user.domain'})) {
7128: return 'ok';
7129: }
7130: }
7131: }
7132: }
7133: }
7134: }
7135: my %roleshash;
7136: my @courses_and_groups = @courses;
7137: push(@courses_and_groups,@groups);
7138: if (@courses_and_groups > 0) {
7139: my (%allgroups,%allroles);
7140: my ($start,$end,$role,$sec,$group);
7141: foreach my $envkey (%env) {
7142: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7143: my $cid = $2.'_'.$3;
7144: if ($1 eq 'gr') {
7145: $group = $4;
7146: $allgroups{$cid}{$group} = $env{$envkey};
7147: } else {
7148: if ($4 eq '') {
7149: $sec = 'none';
7150: } else {
7151: $sec = $4;
7152: }
7153: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7154: }
7155: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7156: my $cid = $2.'_'.$3;
7157: if ($4 eq '') {
7158: $sec = 'none';
7159: } else {
7160: $sec = $4;
7161: }
7162: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7163: }
7164: }
7165: if (keys(%allroles) == 0) {
7166: return;
7167: }
7168: foreach my $key (@courses_and_groups) {
7169: my %content = %{$$access_hash{$key}};
7170: my $cnum = $content{'number'};
7171: my $cdom = $content{'domain'};
7172: my $cid = $cdom.'_'.$cnum;
7173: if (!exists($allroles{$cid})) {
7174: next;
7175: }
7176: foreach my $role_id (keys(%{$content{'roles'}})) {
7177: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7178: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7179: my @status = @{$content{'roles'}{$role_id}{'access'}};
7180: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7181: foreach my $role (keys(%{$allroles{$cid}})) {
7182: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7183: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7184: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7185: if (grep/^all$/,@sections) {
7186: return 'ok';
7187: } else {
7188: if (grep/^$sec$/,@sections) {
7189: return 'ok';
7190: }
7191: }
7192: }
7193: }
7194: if (keys(%{$allgroups{$cid}}) == 0) {
7195: if (grep/^none$/,@groups) {
7196: return 'ok';
7197: }
7198: } else {
7199: if (grep/^all$/,@groups) {
7200: return 'ok';
7201: }
7202: foreach my $group (keys(%{$allgroups{$cid}})) {
7203: if (grep/^$group$/,@groups) {
7204: return 'ok';
7205: }
7206: }
7207: }
7208: }
7209: }
7210: }
7211: }
7212: }
7213: if ($guest) {
7214: return $guest;
7215: }
7216: }
7217: }
7218: return;
7219: }
7220:
7221: sub course_group_datechecker {
7222: my ($dates,$now,$status) = @_;
7223: my ($start,$end) = split(/\./,$dates);
7224: if (!$start && !$end) {
7225: return 'ok';
7226: }
7227: if (grep/^active$/,@{$status}) {
7228: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7229: return 'ok';
7230: }
7231: }
7232: if (grep/^previous$/,@{$status}) {
7233: if ($end > $now ) {
7234: return 'ok';
7235: }
7236: }
7237: if (grep/^future$/,@{$status}) {
7238: if ($start > $now) {
7239: return 'ok';
7240: }
7241: }
7242: return;
7243: }
7244:
7245: sub parse_portfolio_url {
7246: my ($url) = @_;
7247:
7248: my ($type,$udom,$unum,$group,$file_name);
7249:
7250: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7251: $type = 1;
7252: $udom = $1;
7253: $unum = $2;
7254: $file_name = $3;
7255: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7256: $type = 2;
7257: $udom = $1;
7258: $unum = $2;
7259: $group = $3;
7260: $file_name = $3.'/'.$4;
7261: }
7262: if (wantarray) {
7263: return ($type,$udom,$unum,$file_name,$group);
7264: }
7265: return $type;
7266: }
7267:
7268: sub is_portfolio_url {
7269: my ($url) = @_;
7270: return scalar(&parse_portfolio_url($url));
7271: }
7272:
7273: sub is_portfolio_file {
7274: my ($file) = @_;
7275: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7276: return 1;
7277: }
7278: return;
7279: }
7280:
7281: sub usertools_access {
7282: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7283: my ($access,%tools);
7284: if ($context eq '') {
7285: $context = 'tools';
7286: }
7287: if ($context eq 'requestcourses') {
7288: %tools = (
7289: official => 1,
7290: unofficial => 1,
7291: community => 1,
7292: textbook => 1,
7293: placement => 1,
7294: lti => 1,
7295: );
7296: } elsif ($context eq 'requestauthor') {
7297: %tools = (
7298: requestauthor => 1,
7299: );
7300: } else {
7301: %tools = (
7302: aboutme => 1,
7303: blog => 1,
7304: webdav => 1,
7305: portfolio => 1,
7306: );
7307: }
7308: return if (!defined($tools{$tool}));
7309:
7310: if (($udom eq '') || ($uname eq '')) {
7311: $udom = $env{'user.domain'};
7312: $uname = $env{'user.name'};
7313: }
7314:
7315: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7316: if ($action ne 'reload') {
7317: if ($context eq 'requestcourses') {
7318: return $env{'environment.canrequest.'.$tool};
7319: } elsif ($context eq 'requestauthor') {
7320: return $env{'environment.canrequest.author'};
7321: } else {
7322: return $env{'environment.availabletools.'.$tool};
7323: }
7324: }
7325: }
7326:
7327: my ($toolstatus,$inststatus,$envkey);
7328: if ($context eq 'requestauthor') {
7329: $envkey = $context;
7330: } else {
7331: $envkey = $context.'.'.$tool;
7332: }
7333:
7334: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7335: ($action ne 'reload')) {
7336: $toolstatus = $env{'environment.'.$envkey};
7337: $inststatus = $env{'environment.inststatus'};
7338: } else {
7339: if (ref($userenvref) eq 'HASH') {
7340: $toolstatus = $userenvref->{$envkey};
7341: $inststatus = $userenvref->{'inststatus'};
7342: } else {
7343: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7344: $toolstatus = $userenv{$envkey};
7345: $inststatus = $userenv{'inststatus'};
7346: }
7347: }
7348:
7349: if ($toolstatus ne '') {
7350: if ($toolstatus) {
7351: $access = 1;
7352: } else {
7353: $access = 0;
7354: }
7355: return $access;
7356: }
7357:
7358: my ($is_adv,%domdef);
7359: if (ref($is_advref) eq 'HASH') {
7360: $is_adv = $is_advref->{'is_adv'};
7361: } else {
7362: $is_adv = &is_advanced_user($udom,$uname);
7363: }
7364: if (ref($domdefref) eq 'HASH') {
7365: %domdef = %{$domdefref};
7366: } else {
7367: %domdef = &get_domain_defaults($udom);
7368: }
7369: if (ref($domdef{$tool}) eq 'HASH') {
7370: if ($is_adv) {
7371: if ($domdef{$tool}{'_LC_adv'} ne '') {
7372: if ($domdef{$tool}{'_LC_adv'}) {
7373: $access = 1;
7374: } else {
7375: $access = 0;
7376: }
7377: return $access;
7378: }
7379: }
7380: if ($inststatus ne '') {
7381: my ($hasaccess,$hasnoaccess);
7382: foreach my $affiliation (split(/:/,$inststatus)) {
7383: if ($domdef{$tool}{$affiliation} ne '') {
7384: if ($domdef{$tool}{$affiliation}) {
7385: $hasaccess = 1;
7386: } else {
7387: $hasnoaccess = 1;
7388: }
7389: }
7390: }
7391: if ($hasaccess || $hasnoaccess) {
7392: if ($hasaccess) {
7393: $access = 1;
7394: } elsif ($hasnoaccess) {
7395: $access = 0;
7396: }
7397: return $access;
7398: }
7399: } else {
7400: if ($domdef{$tool}{'default'} ne '') {
7401: if ($domdef{$tool}{'default'}) {
7402: $access = 1;
7403: } elsif ($domdef{$tool}{'default'} == 0) {
7404: $access = 0;
7405: }
7406: return $access;
7407: }
7408: }
7409: } else {
7410: if (($context eq 'tools') && ($tool ne 'webdav')) {
7411: $access = 1;
7412: } else {
7413: $access = 0;
7414: }
7415: return $access;
7416: }
7417: }
7418:
7419: sub is_course_owner {
7420: my ($cdom,$cnum,$udom,$uname) = @_;
7421: if (($udom eq '') || ($uname eq '')) {
7422: $udom = $env{'user.domain'};
7423: $uname = $env{'user.name'};
7424: }
7425: unless (($udom eq '') || ($uname eq '')) {
7426: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7427: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7428: return 1;
7429: } else {
7430: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7431: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7432: return 1;
7433: }
7434: }
7435: }
7436: }
7437: return;
7438: }
7439:
7440: sub is_advanced_user {
7441: my ($udom,$uname) = @_;
7442: if ($udom ne '' && $uname ne '') {
7443: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7444: if (wantarray) {
7445: return ($env{'user.adv'},$env{'user.author'});
7446: } else {
7447: return $env{'user.adv'};
7448: }
7449: }
7450: }
7451: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7452: my %allroles;
7453: my ($is_adv,$is_author);
7454: foreach my $role (keys(%roleshash)) {
7455: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7456: my $area = '/'.$tdomain.'/'.$trest;
7457: if ($sec ne '') {
7458: $area .= '/'.$sec;
7459: }
7460: if (($area ne '') && ($trole ne '')) {
7461: my $spec=$trole.'.'.$area;
7462: if ($trole =~ /^cr\//) {
7463: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7464: } elsif ($trole ne 'gr') {
7465: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7466: }
7467: if ($trole eq 'au') {
7468: $is_author = 1;
7469: }
7470: }
7471: }
7472: foreach my $role (keys(%allroles)) {
7473: last if ($is_adv);
7474: foreach my $item (split(/:/,$allroles{$role})) {
7475: if ($item ne '') {
7476: my ($privilege,$restrictions)=split(/&/,$item);
7477: if ($privilege eq 'adv') {
7478: $is_adv = 1;
7479: last;
7480: }
7481: }
7482: }
7483: }
7484: if (wantarray) {
7485: return ($is_adv,$is_author);
7486: }
7487: return $is_adv;
7488: }
7489:
7490: sub check_can_request {
7491: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7492: my $canreq = 0;
7493: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7494: $uname = $env{'user.name'};
7495: $udom = $env{'user.domain'};
7496: }
7497: my ($types,$typename) = &Apache::loncommon::course_types();
7498: my @options = ('approval','validate','autolimit');
7499: my $optregex = join('|',@options);
7500: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7501: foreach my $type (@{$types}) {
7502: if (&usertools_access($uname,$udom,$type,undef,
7503: 'requestcourses')) {
7504: $canreq ++;
7505: if (ref($request_domains) eq 'HASH') {
7506: push(@{$request_domains->{$type}},$udom);
7507: }
7508: if ($dom eq $udom) {
7509: $can_request->{$type} = 1;
7510: }
7511: }
7512: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7513: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7514: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7515: if (@curr > 0) {
7516: foreach my $item (@curr) {
7517: if (ref($request_domains) eq 'HASH') {
7518: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7519: if ($otherdom ne '') {
7520: if (ref($request_domains->{$type}) eq 'ARRAY') {
7521: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7522: push(@{$request_domains->{$type}},$otherdom);
7523: }
7524: } else {
7525: push(@{$request_domains->{$type}},$otherdom);
7526: }
7527: }
7528: }
7529: }
7530: unless ($dom eq $env{'user.domain'}) {
7531: $canreq ++;
7532: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7533: $can_request->{$type} = 1;
7534: }
7535: }
7536: }
7537: }
7538: }
7539: }
7540: return $canreq;
7541: }
7542:
7543: # ---------------------------------------------- Custom access rule evaluation
7544:
7545: sub customaccess {
7546: my ($priv,$uri)=@_;
7547: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7548: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7549: $udom = &LONCAPA::clean_domain($udom);
7550: $ucrs = &LONCAPA::clean_username($ucrs);
7551: my $access=0;
7552: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7553: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7554: if ($type eq 'user') {
7555: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7556: my ($tdom,$tuname)=split(m{/},$scope);
7557: if ($tdom) {
7558: if ($tdom ne $env{'user.domain'}) { next; }
7559: }
7560: if ($tuname) {
7561: if ($tuname ne $env{'user.name'}) { next; }
7562: }
7563: $access=($effect eq 'allow');
7564: last;
7565: }
7566: } else {
7567: if ($role) {
7568: if ($role ne $urole) { next; }
7569: }
7570: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7571: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7572: if ($tdom) {
7573: if ($tdom ne $udom) { next; }
7574: }
7575: if ($tcrs) {
7576: if ($tcrs ne $ucrs) { next; }
7577: }
7578: if ($tsec) {
7579: if ($tsec ne $usec) { next; }
7580: }
7581: $access=($effect eq 'allow');
7582: last;
7583: }
7584: if ($realm eq '' && $role eq '') {
7585: $access=($effect eq 'allow');
7586: }
7587: }
7588: }
7589: return $access;
7590: }
7591:
7592: # ------------------------------------------------- Check for a user privilege
7593:
7594: sub allowed {
7595: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7596: my $ver_orguri=$uri;
7597: $uri=&deversion($uri);
7598: my $orguri=$uri;
7599: $uri=&declutter($uri);
7600:
7601: if ($priv eq 'evb') {
7602: # Evade communication block restrictions for specified role in a course
7603: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7604: return $1;
7605: } else {
7606: return;
7607: }
7608: }
7609:
7610: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7611: # Free bre access to adm and meta resources
7612: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7613: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7614: && ($priv eq 'bre')) {
7615: return 'F';
7616: }
7617:
7618: # Free bre access to user's own portfolio contents
7619: my ($space,$domain,$name,@dir)=split('/',$uri);
7620: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7621: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7622: my %setters;
7623: my ($startblock,$endblock) =
7624: &Apache::loncommon::blockcheck(\%setters,'port');
7625: if ($startblock && $endblock) {
7626: return 'B';
7627: } else {
7628: return 'F';
7629: }
7630: }
7631:
7632: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7633: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7634: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7635: if (exists($env{'request.course.id'})) {
7636: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7637: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7638: if (($domain eq $cdom) && ($name eq $cnum)) {
7639: my $courseprivid=$env{'request.course.id'};
7640: $courseprivid=~s/\_/\//;
7641: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7642: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7643: return $1;
7644: } else {
7645: if ($env{'request.course.sec'}) {
7646: $courseprivid.='/'.$env{'request.course.sec'};
7647: }
7648: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7649: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7650: return $2;
7651: }
7652: }
7653: }
7654: }
7655: }
7656:
7657: # Free bre to public access
7658:
7659: if ($priv eq 'bre') {
7660: my $copyright;
7661: unless ($uri =~ /ext\.tool/) {
7662: $copyright=&metadata($uri,'copyright');
7663: }
7664: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7665: return 'F';
7666: }
7667: if ($copyright eq 'priv') {
7668: $uri=~/([^\/]+)\/([^\/]+)\//;
7669: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7670: return '';
7671: }
7672: }
7673: if ($copyright eq 'domain') {
7674: $uri=~/([^\/]+)\/([^\/]+)\//;
7675: unless (($env{'user.domain'} eq $1) ||
7676: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7677: return '';
7678: }
7679: }
7680: if ($env{'request.role'}=~ /li\.\//) {
7681: # Library role, so allow browsing of resources in this domain.
7682: return 'F';
7683: }
7684: if ($copyright eq 'custom') {
7685: unless (&customaccess($priv,$uri)) { return ''; }
7686: }
7687: }
7688: # Domain coordinator is trying to create a course
7689: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7690: # uri is the requested domain in this case.
7691: # comparison to 'request.role.domain' shows if the user has selected
7692: # a role of dc for the domain in question.
7693: return 'F' if ($uri eq $env{'request.role.domain'});
7694: }
7695:
7696: my $thisallowed='';
7697: my $statecond=0;
7698: my $courseprivid='';
7699:
7700: my $ownaccess;
7701: # Community Coordinator or Assistant Co-author browsing resource space.
7702: if (($priv eq 'bro') && ($env{'user.author'})) {
7703: if ($uri eq '') {
7704: $ownaccess = 1;
7705: } else {
7706: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7707: my $udom = $env{'user.domain'};
7708: my $uname = $env{'user.name'};
7709: if ($uri =~ m{^\Q$udom\E/?$}) {
7710: $ownaccess = 1;
7711: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7712: unless ($uri =~ m{\.\./}) {
7713: $ownaccess = 1;
7714: }
7715: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7716: my $now = time;
7717: if ($uri =~ m{^([^/]+)/?$}) {
7718: my $adom = $1;
7719: foreach my $key (keys(%env)) {
7720: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7721: my ($start,$end) = split('.',$env{$key});
7722: if (($now >= $start) && (!$end || $end < $now)) {
7723: $ownaccess = 1;
7724: last;
7725: }
7726: }
7727: }
7728: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7729: my $adom = $1;
7730: my $aname = $2;
7731: foreach my $role ('ca','aa') {
7732: if ($env{"user.role.$role./$adom/$aname"}) {
7733: my ($start,$end) =
7734: split('.',$env{"user.role.$role./$adom/$aname"});
7735: if (($now >= $start) && (!$end || $end < $now)) {
7736: $ownaccess = 1;
7737: last;
7738: }
7739: }
7740: }
7741: }
7742: }
7743: }
7744: }
7745: }
7746:
7747: # Course
7748:
7749: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7750: unless (($priv eq 'bro') && (!$ownaccess)) {
7751: $thisallowed.=$1;
7752: }
7753: }
7754:
7755: # Domain
7756:
7757: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7758: =~/\Q$priv\E\&([^\:]*)/) {
7759: unless (($priv eq 'bro') && (!$ownaccess)) {
7760: $thisallowed.=$1;
7761: }
7762: }
7763:
7764: # User who is not author or co-author might still be able to edit
7765: # resource of an author in the domain (e.g., if Domain Coordinator).
7766: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7767: (&allowed('mdc',$env{'request.course.id'}))) {
7768: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7769: $thisallowed.=$1;
7770: }
7771: }
7772:
7773: # Course: uri itself is a course
7774: my $courseuri=$uri;
7775: $courseuri=~s/\_(\d)/\/$1/;
7776: $courseuri=~s/^([^\/])/\/$1/;
7777:
7778: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7779: =~/\Q$priv\E\&([^\:]*)/) {
7780: unless (($priv eq 'bro') && (!$ownaccess)) {
7781: $thisallowed.=$1;
7782: }
7783: }
7784:
7785: # URI is an uploaded document for this course, default permissions don't matter
7786: # not allowing 'edit' access (editupload) to uploaded course docs
7787: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7788: $thisallowed='';
7789: my ($match)=&is_on_map($uri);
7790: if ($match) {
7791: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7792: =~/\Q$priv\E\&([^\:]*)/) {
7793: my $value = $1;
7794: if ($noblockcheck) {
7795: $thisallowed.=$value;
7796: } else {
7797: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7798: if (@blockers > 0) {
7799: $thisallowed = 'B';
7800: } else {
7801: $thisallowed.=$value;
7802: }
7803: }
7804: }
7805: } else {
7806: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7807: if ($refuri) {
7808: if ($refuri =~ m|^/adm/|) {
7809: $thisallowed='F';
7810: } else {
7811: $refuri=&declutter($refuri);
7812: my ($match) = &is_on_map($refuri);
7813: if ($match) {
7814: if ($noblockcheck) {
7815: $thisallowed='F';
7816: } else {
7817: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7818: if (@blockers > 0) {
7819: $thisallowed = 'B';
7820: } else {
7821: $thisallowed='F';
7822: }
7823: }
7824: }
7825: }
7826: }
7827: }
7828: }
7829:
7830: if ($priv eq 'bre'
7831: && $thisallowed ne 'F'
7832: && $thisallowed ne '2'
7833: && &is_portfolio_url($uri)) {
7834: $thisallowed = &portfolio_access($uri,$clientip);
7835: }
7836:
7837: # Full access at system, domain or course-wide level? Exit.
7838: if ($thisallowed=~/F/) {
7839: return 'F';
7840: }
7841:
7842: # If this is generating or modifying users, exit with special codes
7843:
7844: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7845: if (($priv eq 'cca') || ($priv eq 'caa')) {
7846: my ($audom,$auname)=split('/',$uri);
7847: # no author name given, so this just checks on the general right to make a co-author in this domain
7848: unless ($auname) { return $thisallowed; }
7849: # an author name is given, so we are about to actually make a co-author for a certain account
7850: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7851: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7852: ($audom ne $env{'request.role.domain'}))) { return ''; }
7853: }
7854: return $thisallowed;
7855: }
7856: #
7857: # Gathered so far: system, domain and course wide privileges
7858: #
7859: # Course: See if uri or referer is an individual resource that is part of
7860: # the course
7861:
7862: if ($env{'request.course.id'}) {
7863:
7864: $courseprivid=$env{'request.course.id'};
7865: if ($env{'request.course.sec'}) {
7866: $courseprivid.='/'.$env{'request.course.sec'};
7867: }
7868: $courseprivid=~s/\_/\//;
7869: my $checkreferer=1;
7870: my ($match,$cond)=&is_on_map($uri);
7871: if ($match) {
7872: $statecond=$cond;
7873: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7874: =~/\Q$priv\E\&([^\:]*)/) {
7875: my $value = $1;
7876: if ($priv eq 'bre') {
7877: if ($noblockcheck) {
7878: $thisallowed.=$value;
7879: } else {
7880: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7881: if (@blockers > 0) {
7882: $thisallowed = 'B';
7883: } else {
7884: $thisallowed.=$value;
7885: }
7886: }
7887: } else {
7888: $thisallowed.=$value;
7889: }
7890: $checkreferer=0;
7891: }
7892: }
7893:
7894: if ($checkreferer) {
7895: my $refuri=$env{'httpref.'.$orguri};
7896: unless ($refuri) {
7897: foreach my $key (keys(%env)) {
7898: if ($key=~/^httpref\..*\*/) {
7899: my $pattern=$key;
7900: $pattern=~s/^httpref\.\/res\///;
7901: $pattern=~s/\*/\[\^\/\]\+/g;
7902: $pattern=~s/\//\\\//g;
7903: if ($orguri=~/$pattern/) {
7904: $refuri=$env{$key};
7905: }
7906: }
7907: }
7908: }
7909:
7910: if ($refuri) {
7911: $refuri=&declutter($refuri);
7912: my ($match,$cond)=&is_on_map($refuri);
7913: if ($match) {
7914: my $refstatecond=$cond;
7915: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7916: =~/\Q$priv\E\&([^\:]*)/) {
7917: my $value = $1;
7918: if ($priv eq 'bre') {
7919: if ($noblockcheck) {
7920: $thisallowed.=$value;
7921: } else {
7922: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7923: if (@blockers > 0) {
7924: $thisallowed = 'B';
7925: } else {
7926: $thisallowed.=$value;
7927: }
7928: }
7929: } else {
7930: $thisallowed.=$value;
7931: }
7932: $uri=$refuri;
7933: $statecond=$refstatecond;
7934: }
7935: }
7936: }
7937: }
7938: }
7939:
7940: #
7941: # Gathered now: all privileges that could apply, and condition number
7942: #
7943: #
7944: # Full or no access?
7945: #
7946:
7947: if ($thisallowed=~/F/) {
7948: return 'F';
7949: }
7950:
7951: unless ($thisallowed) {
7952: return '';
7953: }
7954:
7955: # Restrictions exist, deal with them
7956: #
7957: # C:according to course preferences
7958: # R:according to resource settings
7959: # L:unless locked
7960: # X:according to user session state
7961: #
7962:
7963: # Possibly locked functionality, check all courses
7964: # Locks might take effect only after 10 minutes cache expiration for other
7965: # courses, and 2 minutes for current course
7966:
7967: my $envkey;
7968: if ($thisallowed=~/L/) {
7969: foreach $envkey (keys(%env)) {
7970: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7971: my $courseid=$2;
7972: my $roleid=$1.'.'.$2;
7973: $courseid=~s/^\///;
7974: my $expiretime=600;
7975: if ($env{'request.role'} eq $roleid) {
7976: $expiretime=120;
7977: }
7978: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7979: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7980: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7981: &coursedescription($courseid,{'freshen_cache' => 1});
7982: }
7983: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7984: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7985: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7986: &log($env{'user.domain'},$env{'user.name'},
7987: $env{'user.home'},
7988: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7989: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7990: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7991: return '';
7992: }
7993: }
7994: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7995: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7996: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7997: &log($env{'user.domain'},$env{'user.name'},
7998: $env{'user.home'},
7999: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8000: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8001: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8002: return '';
8003: }
8004: }
8005: }
8006: }
8007: }
8008:
8009: #
8010: # Rest of the restrictions depend on selected course
8011: #
8012:
8013: unless ($env{'request.course.id'}) {
8014: if ($thisallowed eq 'A') {
8015: return 'A';
8016: } elsif ($thisallowed eq 'B') {
8017: return 'B';
8018: } else {
8019: return '1';
8020: }
8021: }
8022:
8023: #
8024: # Now user is definitely in a course
8025: #
8026:
8027:
8028: # Course preferences
8029:
8030: if ($thisallowed=~/C/) {
8031: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8032: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8033: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8034: =~/\Q$rolecode\E/) {
8035: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8036: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8037: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8038: $env{'request.course.id'});
8039: }
8040: return '';
8041: }
8042:
8043: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8044: =~/\Q$unamedom\E/) {
8045: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8046: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8047: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8048: $env{'request.course.id'});
8049: }
8050: return '';
8051: }
8052: }
8053:
8054: # Resource preferences
8055:
8056: if ($thisallowed=~/R/) {
8057: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8058: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8059: if (($priv ne 'pch') && ($priv ne 'plc')) {
8060: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8061: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8062: }
8063: return '';
8064: }
8065: }
8066:
8067: # Restricted by state or randomout?
8068:
8069: if ($thisallowed=~/X/) {
8070: if ($env{'acc.randomout'}) {
8071: if (!$symb) { $symb=&symbread($uri,1); }
8072: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8073: return '';
8074: }
8075: }
8076: if (&condval($statecond)) {
8077: return '2';
8078: } else {
8079: return '';
8080: }
8081: }
8082:
8083: if ($thisallowed eq 'A') {
8084: return 'A';
8085: } elsif ($thisallowed eq 'B') {
8086: return 'B';
8087: }
8088: return 'F';
8089: }
8090:
8091: # ------------------------------------------- Check construction space access
8092:
8093: sub constructaccess {
8094: my ($url,$setpriv)=@_;
8095:
8096: # We do not allow editing of previous versions of files
8097: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8098:
8099: # Get username and domain from URL
8100: my ($ownername,$ownerdomain,$ownerhome);
8101:
8102: ($ownerdomain,$ownername) =
8103: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8104:
8105: # The URL does not really point to any authorspace, forget it
8106: unless (($ownername) && ($ownerdomain)) { return ''; }
8107:
8108: # Now we need to see if the user has access to the authorspace of
8109: # $ownername at $ownerdomain
8110:
8111: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8112: # Real author for this?
8113: $ownerhome = $env{'user.home'};
8114: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8115: return ($ownername,$ownerdomain,$ownerhome);
8116: }
8117: } else {
8118: # Co-author for this?
8119: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8120: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8121: $ownerhome = &homeserver($ownername,$ownerdomain);
8122: return ($ownername,$ownerdomain,$ownerhome);
8123: }
8124: if ($env{'request.course.id'}) {
8125: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8126: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8127: if (&allowed('mdc',$env{'request.course.id'})) {
8128: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8129: return ($ownername,$ownerdomain,$ownerhome);
8130: }
8131: }
8132: }
8133: }
8134:
8135: # We don't have any access right now. If we are not possibly going to do anything about this,
8136: # we might as well leave
8137: unless ($setpriv) { return ''; }
8138:
8139: # Backdoor access?
8140: my $allowed=&allowed('eco',$ownerdomain);
8141: # Nope
8142: unless ($allowed) { return ''; }
8143: # Looks like we may have access, but could be locked by the owner of the construction space
8144: if ($allowed eq 'U') {
8145: my %blocked=&get('environment',['domcoord.author'],
8146: $ownerdomain,$ownername);
8147: # Is blocked by owner
8148: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8149: }
8150: if (($allowed eq 'F') || ($allowed eq 'U')) {
8151: # Grant temporary access
8152: my $then=$env{'user.login.time'};
8153: my $update=$env{'user.update.time'};
8154: if (!$update) { $update = $then; }
8155: my $refresh=$env{'user.refresh.time'};
8156: if (!$refresh) { $refresh = $update; }
8157: my $now = time;
8158: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8159: $now,'ca','constructaccess');
8160: $ownerhome = &homeserver($ownername,$ownerdomain);
8161: return($ownername,$ownerdomain,$ownerhome);
8162: }
8163: # No business here
8164: return '';
8165: }
8166:
8167: # ----------------------------------------------------------- Content Blocking
8168:
8169: {
8170: # Caches for faster Course Contents display where content blocking
8171: # is in operation (i.e., interval param set) for timed quiz.
8172: #
8173: # User for whom data are being temporarily cached.
8174: my $cacheduser='';
8175: # Cached blockers for this user (a hash of blocking items).
8176: my %cachedblockers=();
8177: # When the data were last cached.
8178: my $cachedlast='';
8179:
8180: sub load_all_blockers {
8181: my ($uname,$udom,$blocks)=@_;
8182: if (($uname ne '') && ($udom ne '')) {
8183: if (($cacheduser eq $uname.':'.$udom) &&
8184: (abs($cachedlast-time)<5)) {
8185: return;
8186: }
8187: }
8188: $cachedlast=time;
8189: $cacheduser=$uname.':'.$udom;
8190: %cachedblockers = &get_commblock_resources($blocks);
8191: }
8192:
8193: sub get_comm_blocks {
8194: my ($cdom,$cnum) = @_;
8195: if ($cdom eq '' || $cnum eq '') {
8196: return unless ($env{'request.course.id'});
8197: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8198: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8199: }
8200: my %commblocks;
8201: my $hashid=$cdom.'_'.$cnum;
8202: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8203: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8204: %commblocks = %{$blocksref};
8205: } else {
8206: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8207: my $cachetime = 600;
8208: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8209: }
8210: return %commblocks;
8211: }
8212:
8213: sub get_commblock_resources {
8214: my ($blocks) = @_;
8215: my %blockers = ();
8216: return %blockers unless ($env{'request.course.id'});
8217: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8218: my %commblocks;
8219: if (ref($blocks) eq 'HASH') {
8220: %commblocks = %{$blocks};
8221: } else {
8222: %commblocks = &get_comm_blocks();
8223: }
8224: return %blockers unless (keys(%commblocks) > 0);
8225: my $navmap = Apache::lonnavmaps::navmap->new();
8226: return %blockers unless (ref($navmap));
8227: my $now = time;
8228: foreach my $block (keys(%commblocks)) {
8229: if ($block =~ /^(\d+)____(\d+)$/) {
8230: my ($start,$end) = ($1,$2);
8231: if ($start <= $now && $end >= $now) {
8232: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8233: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8234: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8235: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8236: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8237: }
8238: }
8239: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8240: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8241: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8242: }
8243: }
8244: }
8245: }
8246: }
8247: } elsif ($block =~ /^firstaccess____(.+)$/) {
8248: my $item = $1;
8249: my @to_test;
8250: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8251: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8252: my @interval;
8253: my $type = 'map';
8254: if ($item eq 'course') {
8255: $type = 'course';
8256: @interval=&EXT("resource.0.interval");
8257: } else {
8258: if ($item =~ /___\d+___/) {
8259: $type = 'resource';
8260: @interval=&EXT("resource.0.interval",$item);
8261: if (ref($navmap)) {
8262: my $res = $navmap->getBySymb($item);
8263: push(@to_test,$res);
8264: }
8265: } else {
8266: my $mapsymb = &symbread($item,1);
8267: if ($mapsymb) {
8268: if (ref($navmap)) {
8269: my $mapres = $navmap->getBySymb($mapsymb);
8270: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8271: foreach my $res (@to_test) {
8272: my $symb = $res->symb();
8273: next if ($symb eq $mapsymb);
8274: if ($symb ne '') {
8275: @interval=&EXT("resource.0.interval",$symb);
8276: if ($interval[1] eq 'map') {
8277: last;
8278: }
8279: }
8280: }
8281: }
8282: }
8283: }
8284: }
8285: if ($interval[0] =~ /^(\d+)/) {
8286: my $timelimit = $1;
8287: my $first_access;
8288: if ($type eq 'resource') {
8289: $first_access=&get_first_access($interval[1],$item);
8290: } elsif ($type eq 'map') {
8291: $first_access=&get_first_access($interval[1],undef,$item);
8292: } else {
8293: $first_access=&get_first_access($interval[1]);
8294: }
8295: if ($first_access) {
8296: my $timesup = $first_access+$timelimit;
8297: if ($timesup > $now) {
8298: my $activeblock;
8299: foreach my $res (@to_test) {
8300: if ($res->answerable()) {
8301: $activeblock = 1;
8302: last;
8303: }
8304: }
8305: if ($activeblock) {
8306: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8307: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8308: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8309: }
8310: }
8311: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8312: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8313: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8314: }
8315: }
8316: }
8317: }
8318: }
8319: }
8320: }
8321: }
8322: }
8323: }
8324: return %blockers;
8325: }
8326:
8327: sub has_comm_blocking {
8328: my ($priv,$symb,$uri,$blocks) = @_;
8329: my @blockers;
8330: return unless ($env{'request.course.id'});
8331: return unless ($priv eq 'bre');
8332: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8333: return if ($env{'request.state'} eq 'construct');
8334: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8335: return unless (keys(%cachedblockers) > 0);
8336: my (%possibles,@symbs);
8337: if (!$symb) {
8338: $symb = &symbread($uri,1,1,1,\%possibles);
8339: }
8340: if ($symb) {
8341: @symbs = ($symb);
8342: } elsif (keys(%possibles)) {
8343: @symbs = keys(%possibles);
8344: }
8345: my $noblock;
8346: foreach my $symb (@symbs) {
8347: last if ($noblock);
8348: my ($map,$resid,$resurl)=&decode_symb($symb);
8349: foreach my $block (keys(%cachedblockers)) {
8350: if ($block =~ /^firstaccess____(.+)$/) {
8351: my $item = $1;
8352: if (($item eq $map) || ($item eq $symb)) {
8353: $noblock = 1;
8354: last;
8355: }
8356: }
8357: if (ref($cachedblockers{$block}) eq 'HASH') {
8358: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8359: if ($cachedblockers{$block}{'resources'}{$symb}) {
8360: unless (grep(/^\Q$block\E$/,@blockers)) {
8361: push(@blockers,$block);
8362: }
8363: }
8364: }
8365: }
8366: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8367: if ($cachedblockers{$block}{'maps'}{$map}) {
8368: unless (grep(/^\Q$block\E$/,@blockers)) {
8369: push(@blockers,$block);
8370: }
8371: }
8372: }
8373: }
8374: }
8375: return if ($noblock);
8376: return @blockers;
8377: }
8378: }
8379:
8380: # -------------------------------- Deversion and split uri into path an filename
8381:
8382: #
8383: # Removes the version from a URI and
8384: # splits it in to its filename and path to the filename.
8385: # Seems like File::Basename could have done this more clearly.
8386: # Parameters:
8387: # $uri - input URI
8388: # Returns:
8389: # Two element list consisting of
8390: # $pathname - the URI up to and excluding the trailing /
8391: # $filename - The part of the URI following the last /
8392: # NOTE:
8393: # Another realization of this is simply:
8394: # use File::Basename;
8395: # ...
8396: # $uri = shift;
8397: # $filename = basename($uri);
8398: # $path = dirname($uri);
8399: # return ($filename, $path);
8400: #
8401: # The implementation below is probably faster however.
8402: #
8403: sub split_uri_for_cond {
8404: my $uri=&deversion(&declutter(shift));
8405: my @uriparts=split(/\//,$uri);
8406: my $filename=pop(@uriparts);
8407: my $pathname=join('/',@uriparts);
8408: return ($pathname,$filename);
8409: }
8410: # --------------------------------------------------- Is a resource on the map?
8411:
8412: sub is_on_map {
8413: my ($pathname,$filename) = &split_uri_for_cond(shift);
8414: #Trying to find the conditional for the file
8415: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8416: /\&\Q$filename\E\:([\d\|]+)\&/);
8417: if ($match) {
8418: return (1,$1);
8419: } else {
8420: return (0,0);
8421: }
8422: }
8423:
8424: # --------------------------------------------------------- Get symb from alias
8425:
8426: sub get_symb_from_alias {
8427: my $symb=shift;
8428: my ($map,$resid,$url)=&decode_symb($symb);
8429: # Already is a symb
8430: if ($url) { return $symb; }
8431: # Must be an alias
8432: my $aliassymb='';
8433: my %bighash;
8434: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8435: &GDBM_READER(),0640)) {
8436: my $rid=$bighash{'mapalias_'.$symb};
8437: if ($rid) {
8438: my ($mapid,$resid)=split(/\./,$rid);
8439: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8440: $resid,$bighash{'src_'.$rid});
8441: }
8442: untie %bighash;
8443: }
8444: return $aliassymb;
8445: }
8446:
8447: # ----------------------------------------------------------------- Define Role
8448:
8449: sub definerole {
8450: if (allowed('mcr','/')) {
8451: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8452: foreach my $role (split(':',$sysrole)) {
8453: my ($crole,$cqual)=split(/\&/,$role);
8454: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8455: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8456: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8457: return "refused:s:$crole&$cqual";
8458: }
8459: }
8460: }
8461: foreach my $role (split(':',$domrole)) {
8462: my ($crole,$cqual)=split(/\&/,$role);
8463: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8464: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8465: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8466: return "refused:d:$crole&$cqual";
8467: }
8468: }
8469: }
8470: foreach my $role (split(':',$courole)) {
8471: my ($crole,$cqual)=split(/\&/,$role);
8472: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8473: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8474: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8475: return "refused:c:$crole&$cqual";
8476: }
8477: }
8478: }
8479: my $uhome;
8480: if (($uname ne '') && ($udom ne '')) {
8481: $uhome = &homeserver($uname,$udom);
8482: return $uhome if ($uhome eq 'no_host');
8483: } else {
8484: $uname = $env{'user.name'};
8485: $udom = $env{'user.domain'};
8486: $uhome = $env{'user.home'};
8487: }
8488: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8489: "$udom:$uname:rolesdef_$rolename=".
8490: escape($sysrole.'_'.$domrole.'_'.$courole);
8491: return reply($command,$uhome);
8492: } else {
8493: return 'refused';
8494: }
8495: }
8496:
8497: # ---------------- Make a metadata query against the network of library servers
8498:
8499: sub metadata_query {
8500: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8501: my %rhash;
8502: my %libserv = &all_library();
8503: my @server_list = (defined($server_array) ? @$server_array
8504: : keys(%libserv) );
8505: for my $server (@server_list) {
8506: my $domains = '';
8507: if (ref($domains_hash) eq 'HASH') {
8508: $domains = $domains_hash->{$server};
8509: }
8510: unless ($custom or $customshow) {
8511: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8512: $rhash{$server}=$reply;
8513: }
8514: else {
8515: my $reply=&reply("querysend:".&escape($query).':'.
8516: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8517: $server);
8518: $rhash{$server}=$reply;
8519: }
8520: }
8521: return \%rhash;
8522: }
8523:
8524: # ----------------------------------------- Send log queries and wait for reply
8525:
8526: sub log_query {
8527: my ($uname,$udom,$query,%filters)=@_;
8528: my $uhome=&homeserver($uname,$udom);
8529: if ($uhome eq 'no_host') { return 'error: no_host'; }
8530: my $uhost=&hostname($uhome);
8531: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8532: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8533: $uhome);
8534: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8535: return get_query_reply($queryid);
8536: }
8537:
8538: # -------------------------- Update MySQL table for portfolio file
8539:
8540: sub update_portfolio_table {
8541: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8542: if ($group ne '') {
8543: $file_name =~s /^\Q$group\E//;
8544: }
8545: my $homeserver = &homeserver($uname,$udom);
8546: my $queryid=
8547: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8548: ':'.&escape($file_name).':'.$action,$homeserver);
8549: my $reply = &get_query_reply($queryid);
8550: return $reply;
8551: }
8552:
8553: # -------------------------- Update MySQL allusers table
8554:
8555: sub update_allusers_table {
8556: my ($uname,$udom,$names) = @_;
8557: my $homeserver = &homeserver($uname,$udom);
8558: my $queryid=
8559: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8560: 'lastname='.&escape($names->{'lastname'}).'%%'.
8561: 'firstname='.&escape($names->{'firstname'}).'%%'.
8562: 'middlename='.&escape($names->{'middlename'}).'%%'.
8563: 'generation='.&escape($names->{'generation'}).'%%'.
8564: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8565: 'id='.&escape($names->{'id'}),$homeserver);
8566: return;
8567: }
8568:
8569: # ------- Request retrieval of institutional classlists for course(s)
8570:
8571: sub fetch_enrollment_query {
8572: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8573: my ($homeserver,$sleep,$loopmax);
8574: my $maxtries = 1;
8575: if ($context eq 'automated') {
8576: $homeserver = $perlvar{'lonHostID'};
8577: $sleep = 2;
8578: $loopmax = 100;
8579: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8580: } else {
8581: $homeserver = &homeserver($cnum,$dom);
8582: }
8583: my $host=&hostname($homeserver);
8584: my $cmd = '';
8585: foreach my $affiliate (keys(%{$affiliatesref})) {
8586: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8587: }
8588: $cmd =~ s/%%$//;
8589: $cmd = &escape($cmd);
8590: my $query = 'fetchenrollment';
8591: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8592: unless ($queryid=~/^\Q$host\E\_/) {
8593: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8594: return 'error: '.$queryid;
8595: }
8596: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8597: my $tries = 1;
8598: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8599: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8600: $tries ++;
8601: }
8602: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8603: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8604: } else {
8605: my @responses = split(/:/,$reply);
8606: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8607: foreach my $line (@responses) {
8608: my ($key,$value) = split(/=/,$line,2);
8609: $$replyref{$key} = $value;
8610: }
8611: } else {
8612: my $pathname = LONCAPA::tempdir();
8613: foreach my $line (@responses) {
8614: my ($key,$value) = split(/=/,$line);
8615: $$replyref{$key} = $value;
8616: if ($value > 0) {
8617: foreach my $item (@{$$affiliatesref{$key}}) {
8618: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8619: my $destname = $pathname.'/'.$filename;
8620: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8621: if ($xml_classlist =~ /^error/) {
8622: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8623: } else {
8624: if ( open(FILE,">",$destname) ) {
8625: print FILE &unescape($xml_classlist);
8626: close(FILE);
8627: } else {
8628: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8629: }
8630: }
8631: }
8632: }
8633: }
8634: }
8635: return 'ok';
8636: }
8637: return 'error';
8638: }
8639:
8640: sub get_query_reply {
8641: my ($queryid,$sleep,$loopmax) = @_;;
8642: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8643: $sleep = 0.2;
8644: }
8645: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8646: $loopmax = 100;
8647: }
8648: my $replyfile=LONCAPA::tempdir().$queryid;
8649: my $reply='';
8650: for (1..$loopmax) {
8651: sleep($sleep);
8652: if (-e $replyfile.'.end') {
8653: if (open(my $fh,"<",$replyfile)) {
8654: $reply = join('',<$fh>);
8655: close($fh);
8656: } else { return 'error: reply_file_error'; }
8657: return &unescape($reply);
8658: }
8659: }
8660: return 'timeout:'.$queryid;
8661: }
8662:
8663: sub courselog_query {
8664: #
8665: # possible filters:
8666: # url: url or symb
8667: # username
8668: # domain
8669: # action: view, submit, grade
8670: # start: timestamp
8671: # end: timestamp
8672: #
8673: my (%filters)=@_;
8674: unless ($env{'request.course.id'}) { return 'no_course'; }
8675: if ($filters{'url'}) {
8676: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8677: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8678: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8679: }
8680: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8681: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8682: return &log_query($cname,$cdom,'courselog',%filters);
8683: }
8684:
8685: sub userlog_query {
8686: #
8687: # possible filters:
8688: # action: log check role
8689: # start: timestamp
8690: # end: timestamp
8691: #
8692: my ($uname,$udom,%filters)=@_;
8693: return &log_query($uname,$udom,'userlog',%filters);
8694: }
8695:
8696: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8697:
8698: sub auto_run {
8699: my ($cnum,$cdom) = @_;
8700: my $response = 0;
8701: my $settings;
8702: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8703: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8704: $settings = $domconfig{'autoenroll'};
8705: if ($settings->{'run'} eq '1') {
8706: $response = 1;
8707: }
8708: } else {
8709: my $homeserver;
8710: if (&is_course($cdom,$cnum)) {
8711: $homeserver = &homeserver($cnum,$cdom);
8712: } else {
8713: $homeserver = &domain($cdom,'primary');
8714: }
8715: if ($homeserver ne 'no_host') {
8716: $response = &reply('autorun:'.$cdom,$homeserver);
8717: }
8718: }
8719: return $response;
8720: }
8721:
8722: sub auto_get_sections {
8723: my ($cnum,$cdom,$inst_coursecode) = @_;
8724: my $homeserver;
8725: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8726: $homeserver = &homeserver($cnum,$cdom);
8727: }
8728: if (!defined($homeserver)) {
8729: if ($cdom =~ /^$match_domain$/) {
8730: $homeserver = &domain($cdom,'primary');
8731: }
8732: }
8733: my @secs;
8734: if (defined($homeserver)) {
8735: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8736: unless ($response eq 'refused') {
8737: @secs = split(/:/,$response);
8738: }
8739: }
8740: return @secs;
8741: }
8742:
8743: sub auto_new_course {
8744: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8745: my $homeserver = &homeserver($cnum,$cdom);
8746: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8747: return $response;
8748: }
8749:
8750: sub auto_validate_courseID {
8751: my ($cnum,$cdom,$inst_course_id) = @_;
8752: my $homeserver = &homeserver($cnum,$cdom);
8753: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8754: return $response;
8755: }
8756:
8757: sub auto_validate_instcode {
8758: my ($cnum,$cdom,$instcode,$owner) = @_;
8759: my ($homeserver,$response);
8760: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8761: $homeserver = &homeserver($cnum,$cdom);
8762: }
8763: if (!defined($homeserver)) {
8764: if ($cdom =~ /^$match_domain$/) {
8765: $homeserver = &domain($cdom,'primary');
8766: }
8767: }
8768: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8769: &escape($instcode).':'.&escape($owner),$homeserver));
8770: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8771: return ($outcome,$description,$defaultcredits);
8772: }
8773:
8774: sub auto_create_password {
8775: my ($cnum,$cdom,$authparam,$udom) = @_;
8776: my ($homeserver,$response);
8777: my $create_passwd = 0;
8778: my $authchk = '';
8779: if ($udom =~ /^$match_domain$/) {
8780: $homeserver = &domain($udom,'primary');
8781: }
8782: if ($homeserver eq '') {
8783: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8784: $homeserver = &homeserver($cnum,$cdom);
8785: }
8786: }
8787: if ($homeserver eq '') {
8788: $authchk = 'nodomain';
8789: } else {
8790: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8791: if ($response eq 'refused') {
8792: $authchk = 'refused';
8793: } else {
8794: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8795: }
8796: }
8797: return ($authparam,$create_passwd,$authchk);
8798: }
8799:
8800: sub auto_photo_permission {
8801: my ($cnum,$cdom,$students) = @_;
8802: my $homeserver = &homeserver($cnum,$cdom);
8803: my ($outcome,$perm_reqd,$conditions) =
8804: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8805: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8806: return (undef,undef);
8807: }
8808: return ($outcome,$perm_reqd,$conditions);
8809: }
8810:
8811: sub auto_checkphotos {
8812: my ($uname,$udom,$pid) = @_;
8813: my $homeserver = &homeserver($uname,$udom);
8814: my ($result,$resulttype);
8815: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8816: &escape($uname).':'.&escape($pid),
8817: $homeserver));
8818: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8819: return (undef,undef);
8820: }
8821: if ($outcome) {
8822: ($result,$resulttype) = split(/:/,$outcome);
8823: }
8824: return ($result,$resulttype);
8825: }
8826:
8827: sub auto_photochoice {
8828: my ($cnum,$cdom) = @_;
8829: my $homeserver = &homeserver($cnum,$cdom);
8830: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8831: &escape($cdom),
8832: $homeserver)));
8833: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8834: return (undef,undef);
8835: }
8836: return ($update,$comment);
8837: }
8838:
8839: sub auto_photoupdate {
8840: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8841: my $homeserver = &homeserver($cnum,$dom);
8842: my $host=&hostname($homeserver);
8843: my $cmd = '';
8844: my $maxtries = 1;
8845: foreach my $affiliate (keys(%{$affiliatesref})) {
8846: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8847: }
8848: $cmd =~ s/%%$//;
8849: $cmd = &escape($cmd);
8850: my $query = 'institutionalphotos';
8851: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8852: unless ($queryid=~/^\Q$host\E\_/) {
8853: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8854: return 'error: '.$queryid;
8855: }
8856: my $reply = &get_query_reply($queryid);
8857: my $tries = 1;
8858: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8859: $reply = &get_query_reply($queryid);
8860: $tries ++;
8861: }
8862: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8863: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8864: } else {
8865: my @responses = split(/:/,$reply);
8866: my $outcome = shift(@responses);
8867: foreach my $item (@responses) {
8868: my ($key,$value) = split(/=/,$item);
8869: $$photo{$key} = $value;
8870: }
8871: return $outcome;
8872: }
8873: return 'error';
8874: }
8875:
8876: sub auto_instcode_format {
8877: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8878: $cat_order) = @_;
8879: my $courses = '';
8880: my @homeservers;
8881: if ($caller eq 'global') {
8882: my %servers = &get_servers($codedom,'library');
8883: foreach my $tryserver (keys(%servers)) {
8884: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8885: push(@homeservers,$tryserver);
8886: }
8887: }
8888: } elsif ($caller eq 'requests') {
8889: if ($codedom =~ /^$match_domain$/) {
8890: my $chome = &domain($codedom,'primary');
8891: unless ($chome eq 'no_host') {
8892: push(@homeservers,$chome);
8893: }
8894: }
8895: } else {
8896: push(@homeservers,&homeserver($caller,$codedom));
8897: }
8898: foreach my $code (keys(%{$instcodes})) {
8899: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8900: }
8901: chop($courses);
8902: my $ok_response = 0;
8903: my $response;
8904: while (@homeservers > 0 && $ok_response == 0) {
8905: my $server = shift(@homeservers);
8906: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8907: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8908: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8909: split(/:/,$response);
8910: %{$codes} = (%{$codes},&str2hash($codes_str));
8911: push(@{$codetitles},&str2array($codetitles_str));
8912: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8913: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8914: $ok_response = 1;
8915: }
8916: }
8917: if ($ok_response) {
8918: return 'ok';
8919: } else {
8920: return $response;
8921: }
8922: }
8923:
8924: sub auto_instcode_defaults {
8925: my ($domain,$returnhash,$code_order) = @_;
8926: my @homeservers;
8927:
8928: my %servers = &get_servers($domain,'library');
8929: foreach my $tryserver (keys(%servers)) {
8930: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8931: push(@homeservers,$tryserver);
8932: }
8933: }
8934:
8935: my $response;
8936: foreach my $server (@homeservers) {
8937: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8938: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8939:
8940: foreach my $pair (split(/\&/,$response)) {
8941: my ($name,$value)=split(/\=/,$pair);
8942: if ($name eq 'code_order') {
8943: @{$code_order} = split(/\&/,&unescape($value));
8944: } else {
8945: $returnhash->{&unescape($name)}=&unescape($value);
8946: }
8947: }
8948: return 'ok';
8949: }
8950:
8951: return $response;
8952: }
8953:
8954: sub auto_possible_instcodes {
8955: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8956: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8957: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8958: return;
8959: }
8960: my (@homeservers,$uhome);
8961: if (defined(&domain($domain,'primary'))) {
8962: $uhome=&domain($domain,'primary');
8963: push(@homeservers,&domain($domain,'primary'));
8964: } else {
8965: my %servers = &get_servers($domain,'library');
8966: foreach my $tryserver (keys(%servers)) {
8967: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8968: push(@homeservers,$tryserver);
8969: }
8970: }
8971: }
8972: my $response;
8973: foreach my $server (@homeservers) {
8974: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8975: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8976: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8977: split(':',$response);
8978: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8979: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8980: foreach my $item (split('&',$cat_title)) {
8981: my ($name,$value)=split('=',$item);
8982: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8983: }
8984: foreach my $item (split('&',$cat_order)) {
8985: my ($name,$value)=split('=',$item);
8986: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8987: }
8988: return 'ok';
8989: }
8990: return $response;
8991: }
8992:
8993: sub auto_courserequest_checks {
8994: my ($dom) = @_;
8995: my ($homeserver,%validations);
8996: if ($dom =~ /^$match_domain$/) {
8997: $homeserver = &domain($dom,'primary');
8998: }
8999: unless ($homeserver eq 'no_host') {
9000: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9001: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9002: my @items = split(/&/,$response);
9003: foreach my $item (@items) {
9004: my ($key,$value) = split('=',$item);
9005: $validations{&unescape($key)} = &thaw_unescape($value);
9006: }
9007: }
9008: }
9009: return %validations;
9010: }
9011:
9012: sub auto_courserequest_validation {
9013: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9014: my ($homeserver,$response);
9015: if ($dom =~ /^$match_domain$/) {
9016: $homeserver = &domain($dom,'primary');
9017: }
9018: unless ($homeserver eq 'no_host') {
9019: my $customdata;
9020: if (ref($custominfo) eq 'HASH') {
9021: $customdata = &freeze_escape($custominfo);
9022: }
9023: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9024: ':'.&escape($crstype).':'.&escape($inststatuslist).
9025: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9026: $customdata,$homeserver));
9027: }
9028: return $response;
9029: }
9030:
9031: sub auto_validate_class_sec {
9032: my ($cdom,$cnum,$owners,$inst_class) = @_;
9033: my $homeserver = &homeserver($cnum,$cdom);
9034: my $ownerlist;
9035: if (ref($owners) eq 'ARRAY') {
9036: $ownerlist = join(',',@{$owners});
9037: } else {
9038: $ownerlist = $owners;
9039: }
9040: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9041: &escape($ownerlist).':'.$cdom,$homeserver);
9042: return $response;
9043: }
9044:
9045: sub auto_validate_instclasses {
9046: my ($cdom,$cnum,$owners,$classesref) = @_;
9047: my ($homeserver,%validations);
9048: $homeserver = &homeserver($cnum,$cdom);
9049: unless ($homeserver eq 'no_host') {
9050: my $ownerlist;
9051: if (ref($owners) eq 'ARRAY') {
9052: $ownerlist = join(',',@{$owners});
9053: } else {
9054: $ownerlist = $owners;
9055: }
9056: if (ref($classesref) eq 'HASH') {
9057: my $classes = &freeze_escape($classesref);
9058: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9059: ':'.$cdom.':'.$classes,$homeserver);
9060: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9061: my @items = split(/&/,$response);
9062: foreach my $item (@items) {
9063: my ($key,$value) = split('=',$item);
9064: $validations{&unescape($key)} = &thaw_unescape($value);
9065: }
9066: }
9067: }
9068: }
9069: return %validations;
9070: }
9071:
9072: sub auto_crsreq_update {
9073: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9074: $code,$accessstart,$accessend,$inbound) = @_;
9075: my ($homeserver,%crsreqresponse);
9076: if ($cdom =~ /^$match_domain$/) {
9077: $homeserver = &domain($cdom,'primary');
9078: }
9079: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9080: my $info;
9081: if (ref($inbound) eq 'HASH') {
9082: $info = &freeze_escape($inbound);
9083: }
9084: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9085: ':'.&escape($action).':'.&escape($ownername).':'.
9086: &escape($ownerdomain).':'.&escape($fullname).':'.
9087: &escape($title).':'.&escape($code).':'.
9088: &escape($accessstart).':'.&escape($accessend).':'.$info,
9089: $homeserver);
9090: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9091: my @items = split(/&/,$response);
9092: foreach my $item (@items) {
9093: my ($key,$value) = split('=',$item);
9094: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9095: }
9096: }
9097: }
9098: return \%crsreqresponse;
9099: }
9100:
9101: sub auto_export_grades {
9102: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9103: my ($homeserver,%exportresponse);
9104: if ($cdom =~ /^$match_domain$/) {
9105: $homeserver = &domain($cdom,'primary');
9106: }
9107: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9108: my $info;
9109: if (ref($inforef) eq 'HASH') {
9110: $info = &freeze_escape($inforef);
9111: }
9112: if (ref($gradesref) eq 'HASH') {
9113: my $grades = &freeze_escape($gradesref);
9114: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9115: $info.':'.$grades,$homeserver);
9116: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9117: my @items = split(/&/,$response);
9118: foreach my $item (@items) {
9119: my ($key,$value) = split('=',$item);
9120: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9121: }
9122: }
9123: }
9124: }
9125: return \%exportresponse;
9126: }
9127:
9128: sub check_instcode_cloning {
9129: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9130: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9131: return;
9132: }
9133: my $canclone;
9134: if (@{$code_order} > 0) {
9135: my $instcoderegexp ='^';
9136: my @clonecodes = split(/\&/,$cloner);
9137: foreach my $item (@{$code_order}) {
9138: if (grep(/^\Q$item\E=/,@clonecodes)) {
9139: foreach my $pair (@clonecodes) {
9140: my ($key,$val) = split(/\=/,$pair,2);
9141: $val = &unescape($val);
9142: if ($key eq $item) {
9143: $instcoderegexp .= '('.$val.')';
9144: last;
9145: }
9146: }
9147: } else {
9148: $instcoderegexp .= $codedefaults->{$item};
9149: }
9150: }
9151: $instcoderegexp .= '$';
9152: my (@from,@to);
9153: eval {
9154: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9155: (@to) = ($clonetocode =~ /$instcoderegexp/);
9156: };
9157: if ((@from > 0) && (@to > 0)) {
9158: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9159: if (!@diffs) {
9160: $canclone = 1;
9161: }
9162: }
9163: }
9164: return $canclone;
9165: }
9166:
9167: sub default_instcode_cloning {
9168: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9169: my (%codedefaults,@code_order,$canclone);
9170: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9171: %codedefaults = %{$codedefaultsref};
9172: @code_order = @{$codeorderref};
9173: } elsif ($clonedom) {
9174: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9175: }
9176: if (($domdefclone) && (@code_order)) {
9177: my @clonecodes = split(/\+/,$domdefclone);
9178: my $instcoderegexp ='^';
9179: foreach my $item (@code_order) {
9180: if (grep(/^\Q$item\E$/,@clonecodes)) {
9181: $instcoderegexp .= '('.$codedefaults{$item}.')';
9182: } else {
9183: $instcoderegexp .= $codedefaults{$item};
9184: }
9185: }
9186: $instcoderegexp .= '$';
9187: my (@from,@to);
9188: eval {
9189: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9190: (@to) = ($clonetocode =~ /$instcoderegexp/);
9191: };
9192: if ((@from > 0) && (@to > 0)) {
9193: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9194: if (!@diffs) {
9195: $canclone = 1;
9196: }
9197: }
9198: }
9199: return $canclone;
9200: }
9201:
9202: # ------------------------------------------------------- Course Group routines
9203:
9204: sub get_coursegroups {
9205: my ($cdom,$cnum,$group,$namespace) = @_;
9206: return(&dump($namespace,$cdom,$cnum,$group));
9207: }
9208:
9209: sub modify_coursegroup {
9210: my ($cdom,$cnum,$groupsettings) = @_;
9211: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9212: }
9213:
9214: sub toggle_coursegroup_status {
9215: my ($cdom,$cnum,$group,$action) = @_;
9216: my ($from_namespace,$to_namespace);
9217: if ($action eq 'delete') {
9218: $from_namespace = 'coursegroups';
9219: $to_namespace = 'deleted_groups';
9220: } else {
9221: $from_namespace = 'deleted_groups';
9222: $to_namespace = 'coursegroups';
9223: }
9224: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9225: if (my $tmp = &error(%curr_group)) {
9226: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9227: return ('read error',$tmp);
9228: } else {
9229: my %savedsettings = %curr_group;
9230: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9231: my $deloutcome;
9232: if ($result eq 'ok') {
9233: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9234: } else {
9235: return ('write error',$result);
9236: }
9237: if ($deloutcome eq 'ok') {
9238: return 'ok';
9239: } else {
9240: return ('delete error',$deloutcome);
9241: }
9242: }
9243: }
9244:
9245: sub modify_group_roles {
9246: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9247: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9248: my $role = 'gr/'.&escape($userprivs);
9249: my ($uname,$udom) = split(/:/,$user);
9250: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9251: if ($result eq 'ok') {
9252: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9253: }
9254: return $result;
9255: }
9256:
9257: sub modify_coursegroup_membership {
9258: my ($cdom,$cnum,$membership) = @_;
9259: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9260: return $result;
9261: }
9262:
9263: sub get_active_groups {
9264: my ($udom,$uname,$cdom,$cnum) = @_;
9265: my $now = time;
9266: my %groups = ();
9267: foreach my $key (keys(%env)) {
9268: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9269: my ($start,$end) = split(/\./,$env{$key});
9270: if (($end!=0) && ($end<$now)) { next; }
9271: if (($start!=0) && ($start>$now)) { next; }
9272: if ($1 eq $cdom && $2 eq $cnum) {
9273: $groups{$3} = $env{$key} ;
9274: }
9275: }
9276: }
9277: return %groups;
9278: }
9279:
9280: sub get_group_membership {
9281: my ($cdom,$cnum,$group) = @_;
9282: return(&dump('groupmembership',$cdom,$cnum,$group));
9283: }
9284:
9285: sub get_users_groups {
9286: my ($udom,$uname,$courseid) = @_;
9287: my @usersgroups;
9288: my $cachetime=1800;
9289:
9290: my $hashid="$udom:$uname:$courseid";
9291: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9292: if (defined($cached)) {
9293: @usersgroups = split(/:/,$grouplist);
9294: } else {
9295: $grouplist = '';
9296: my $courseurl = &courseid_to_courseurl($courseid);
9297: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9298: my $access_end = $env{'course.'.$courseid.
9299: '.default_enrollment_end_date'};
9300: my $now = time;
9301: foreach my $key (keys(%roleshash)) {
9302: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9303: my $group = $1;
9304: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9305: my $start = $2;
9306: my $end = $1;
9307: if ($start == -1) { next; } # deleted from group
9308: if (($start!=0) && ($start>$now)) { next; }
9309: if (($end!=0) && ($end<$now)) {
9310: if ($access_end && $access_end < $now) {
9311: if ($access_end - $end < 86400) {
9312: push(@usersgroups,$group);
9313: }
9314: }
9315: next;
9316: }
9317: push(@usersgroups,$group);
9318: }
9319: }
9320: }
9321: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9322: $grouplist = join(':',@usersgroups);
9323: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9324: }
9325: return @usersgroups;
9326: }
9327:
9328: sub devalidate_getgroups_cache {
9329: my ($udom,$uname,$cdom,$cnum)=@_;
9330: my $courseid = $cdom.'_'.$cnum;
9331:
9332: my $hashid="$udom:$uname:$courseid";
9333: &devalidate_cache_new('getgroups',$hashid);
9334: }
9335:
9336: # ------------------------------------------------------------------ Plain Text
9337:
9338: sub plaintext {
9339: my ($short,$type,$cid,$forcedefault) = @_;
9340: if ($short =~ m{^cr/}) {
9341: return (split('/',$short))[-1];
9342: }
9343: if (!defined($cid)) {
9344: $cid = $env{'request.course.id'};
9345: }
9346: my %rolenames = (
9347: Course => 'std',
9348: Community => 'alt1',
9349: Placement => 'std',
9350: );
9351: if ($cid ne '') {
9352: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9353: unless ($forcedefault) {
9354: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9355: &Apache::lonlocal::mt_escape(\$roletext);
9356: return &Apache::lonlocal::mt($roletext);
9357: }
9358: }
9359: }
9360: if ((defined($type)) && (defined($rolenames{$type})) &&
9361: (defined($rolenames{$type})) &&
9362: (defined($prp{$short}{$rolenames{$type}}))) {
9363: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9364: } elsif ($cid ne '') {
9365: my $crstype = $env{'course.'.$cid.'.type'};
9366: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9367: (defined($prp{$short}{$rolenames{$crstype}}))) {
9368: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9369: }
9370: }
9371: return &Apache::lonlocal::mt($prp{$short}{'std'});
9372: }
9373:
9374: # ----------------------------------------------------------------- Assign Role
9375:
9376: sub assignrole {
9377: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9378: $context)=@_;
9379: my $mrole;
9380: if ($role =~ /^cr\//) {
9381: my $cwosec=$url;
9382: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9383: unless (&allowed('ccr',$cwosec)) {
9384: my $refused = 1;
9385: if ($context eq 'requestcourses') {
9386: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9387: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9388: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9389: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9390: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9391: if ($crsenv{'internal.courseowner'} eq
9392: $env{'user.name'}.':'.$env{'user.domain'}) {
9393: $refused = '';
9394: }
9395: }
9396: }
9397: }
9398: }
9399: if ($refused) {
9400: &logthis('Refused custom assignrole: '.
9401: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9402: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9403: return 'refused';
9404: }
9405: }
9406: $mrole='cr';
9407: } elsif ($role =~ /^gr\//) {
9408: my $cwogrp=$url;
9409: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9410: unless (&allowed('mdg',$cwogrp)) {
9411: &logthis('Refused group assignrole: '.
9412: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9413: $env{'user.name'}.' at '.$env{'user.domain'});
9414: return 'refused';
9415: }
9416: $mrole='gr';
9417: } else {
9418: my $cwosec=$url;
9419: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9420: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9421: my $refused;
9422: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9423: if (!(&allowed('c'.$role,$url))) {
9424: $refused = 1;
9425: }
9426: } else {
9427: $refused = 1;
9428: }
9429: if ($refused) {
9430: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9431: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9432: my %crsenv;
9433: if ($role eq 'cc' || $role eq 'co') {
9434: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9435: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9436: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9437: if ($crsenv{'internal.courseowner'} eq
9438: $env{'user.name'}.':'.$env{'user.domain'}) {
9439: $refused = '';
9440: }
9441: }
9442: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9443: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9444: if ($crsenv{'internal.courseowner'} eq
9445: $env{'user.name'}.':'.$env{'user.domain'}) {
9446: $refused = '';
9447: }
9448: }
9449: }
9450: }
9451: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9452: if ($role eq 'st') {
9453: $refused = '';
9454: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9455: $refused = '';
9456: }
9457: } elsif ($context eq 'requestcourses') {
9458: my @possroles = ('st','ta','ep','in','cc','co');
9459: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9460: my $wrongcc;
9461: if ($cnum =~ /^$match_community$/) {
9462: $wrongcc = 1 if ($role eq 'cc');
9463: } else {
9464: $wrongcc = 1 if ($role eq 'co');
9465: }
9466: unless ($wrongcc) {
9467: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9468: if ($crsenv{'internal.courseowner'} eq
9469: $env{'user.name'}.':'.$env{'user.domain'}) {
9470: $refused = '';
9471: }
9472: }
9473: }
9474: } elsif ($context eq 'requestauthor') {
9475: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9476: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9477: if ($env{'environment.requestauthor'} eq 'automatic') {
9478: $refused = '';
9479: } else {
9480: my %domdefaults = &get_domain_defaults($udom);
9481: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9482: my $checkbystatus;
9483: if ($env{'user.adv'}) {
9484: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9485: if ($disposition eq 'automatic') {
9486: $refused = '';
9487: } elsif ($disposition eq '') {
9488: $checkbystatus = 1;
9489: }
9490: } else {
9491: $checkbystatus = 1;
9492: }
9493: if ($checkbystatus) {
9494: if ($env{'environment.inststatus'}) {
9495: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9496: foreach my $type (@inststatuses) {
9497: if (($type ne '') &&
9498: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9499: $refused = '';
9500: }
9501: }
9502: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9503: $refused = '';
9504: }
9505: }
9506: }
9507: }
9508: }
9509: }
9510: if ($refused) {
9511: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9512: ' '.$role.' '.$end.' '.$start.' by '.
9513: $env{'user.name'}.' at '.$env{'user.domain'});
9514: return 'refused';
9515: }
9516: }
9517: } elsif ($role eq 'au') {
9518: if ($url ne '/'.$udom.'/') {
9519: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9520: ' to assign author role for '.$uname.':'.$udom.
9521: ' in domain: '.$url.' refused (wrong domain).');
9522: return 'refused';
9523: }
9524: }
9525: $mrole=$role;
9526: }
9527: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9528: "$udom:$uname:$url".'_'."$mrole=$role";
9529: if ($end) { $command.='_'.$end; }
9530: if ($start) {
9531: if ($end) {
9532: $command.='_'.$start;
9533: } else {
9534: $command.='_0_'.$start;
9535: }
9536: }
9537: my $origstart = $start;
9538: my $origend = $end;
9539: my $delflag;
9540: # actually delete
9541: if ($deleteflag) {
9542: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9543: # modify command to delete the role
9544: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9545: "$udom:$uname:$url".'_'."$mrole";
9546: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9547: # set start and finish to negative values for userrolelog
9548: $start=-1;
9549: $end=-1;
9550: $delflag = 1;
9551: }
9552: }
9553: # send command
9554: my $answer=&reply($command,&homeserver($uname,$udom));
9555: # log new user role if status is ok
9556: if ($answer eq 'ok') {
9557: &userrolelog($role,$uname,$udom,$url,$start,$end);
9558: if (($role eq 'cc') || ($role eq 'in') ||
9559: ($role eq 'ep') || ($role eq 'ad') ||
9560: ($role eq 'ta') || ($role eq 'st') ||
9561: ($role=~/^cr/) || ($role eq 'gr') ||
9562: ($role eq 'co')) {
9563: # for course roles, perform group memberships changes triggered by role change.
9564: unless ($role =~ /^gr/) {
9565: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9566: $origstart,$selfenroll,$context);
9567: }
9568: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9569: $selfenroll,$context);
9570: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9571: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9572: ($role eq 'da')) {
9573: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9574: $context);
9575: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9576: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9577: $context);
9578: }
9579: if ($role eq 'cc') {
9580: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9581: }
9582: }
9583: return $answer;
9584: }
9585:
9586: sub autoupdate_coowners {
9587: my ($url,$end,$start,$uname,$udom) = @_;
9588: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9589: if (($cdom ne '') && ($cnum ne '')) {
9590: my $now = time;
9591: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9592: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9593: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9594: my $instcode = $coursehash{'internal.coursecode'};
9595: if ($instcode ne '') {
9596: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9597: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9598: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9599: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9600: if ($result eq 'valid') {
9601: if ($coursehash{'internal.co-owners'}) {
9602: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9603: push(@newcoowners,$coowner);
9604: }
9605: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9606: push(@newcoowners,$uname.':'.$udom);
9607: }
9608: @newcoowners = sort(@newcoowners);
9609: } else {
9610: push(@newcoowners,$uname.':'.$udom);
9611: }
9612: } else {
9613: if ($coursehash{'internal.co-owners'}) {
9614: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9615: unless ($coowner eq $uname.':'.$udom) {
9616: push(@newcoowners,$coowner);
9617: }
9618: }
9619: unless (@newcoowners > 0) {
9620: $delcoowners = 1;
9621: $coowners = '';
9622: }
9623: }
9624: }
9625: if (@newcoowners || $delcoowners) {
9626: &store_coowners($cdom,$cnum,$coursehash{'home'},
9627: $delcoowners,@newcoowners);
9628: }
9629: }
9630: }
9631: }
9632: }
9633: }
9634: }
9635:
9636: sub store_coowners {
9637: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9638: my $cid = $cdom.'_'.$cnum;
9639: my ($coowners,$delresult,$putresult);
9640: if (@newcoowners) {
9641: $coowners = join(',',@newcoowners);
9642: my %coownershash = (
9643: 'internal.co-owners' => $coowners,
9644: );
9645: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9646: if ($putresult eq 'ok') {
9647: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9648: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9649: }
9650: }
9651: }
9652: if ($delcoowners) {
9653: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9654: if ($delresult eq 'ok') {
9655: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9656: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9657: }
9658: }
9659: }
9660: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9661: my %crsinfo =
9662: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9663: if (ref($crsinfo{$cid}) eq 'HASH') {
9664: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9665: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9666: }
9667: }
9668: }
9669:
9670: # -------------------------------------------------- Modify user authentication
9671: # Overrides without validation
9672:
9673: sub modifyuserauth {
9674: my ($udom,$uname,$umode,$upass)=@_;
9675: my $uhome=&homeserver($uname,$udom);
9676: unless (&allowed('mau',$udom)) { return 'refused'; }
9677: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9678: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9679: ' in domain '.$env{'request.role.domain'});
9680: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9681: &escape($upass),$uhome);
9682: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9683: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9684: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9685: &log($udom,,$uname,$uhome,
9686: 'Authentication changed by '.$env{'user.domain'}.', '.
9687: $env{'user.name'}.', '.$umode.
9688: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9689: unless ($reply eq 'ok') {
9690: &logthis('Authentication mode error: '.$reply);
9691: return 'error: '.$reply;
9692: }
9693: return 'ok';
9694: }
9695:
9696: # --------------------------------------------------------------- Modify a user
9697:
9698: sub modifyuser {
9699: my ($udom, $uname, $uid,
9700: $umode, $upass, $first,
9701: $middle, $last, $gene,
9702: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9703: $udom= &LONCAPA::clean_domain($udom);
9704: $uname=&LONCAPA::clean_username($uname);
9705: my $showcandelete = 'none';
9706: if (ref($candelete) eq 'ARRAY') {
9707: if (@{$candelete} > 0) {
9708: $showcandelete = join(', ',@{$candelete});
9709: }
9710: }
9711: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9712: $umode.', '.$first.', '.$middle.', '.
9713: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9714: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9715: ' desiredhome not specified').
9716: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9717: ' in domain '.$env{'request.role.domain'});
9718: my $uhome=&homeserver($uname,$udom,'true');
9719: my $newuser;
9720: if ($uhome eq 'no_host') {
9721: $newuser = 1;
9722: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9723: ($umode eq 'lti')) {
9724: return 'error: more information needed to create new user';
9725: }
9726: }
9727: # ----------------------------------------------------------------- Create User
9728: if (($uhome eq 'no_host') &&
9729: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9730: my $unhome='';
9731: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9732: $unhome = $desiredhome;
9733: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9734: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9735: } else { # load balancing routine for determining $unhome
9736: my $loadm=10000000;
9737: my %servers = &get_servers($udom,'library');
9738: foreach my $tryserver (keys(%servers)) {
9739: my $answer=reply('load',$tryserver);
9740: if (($answer=~/\d+/) && ($answer<$loadm)) {
9741: $loadm=$answer;
9742: $unhome=$tryserver;
9743: }
9744: }
9745: }
9746: if (($unhome eq '') || ($unhome eq 'no_host')) {
9747: return 'error: unable to find a home server for '.$uname.
9748: ' in domain '.$udom;
9749: }
9750: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9751: &escape($upass),$unhome);
9752: unless ($reply eq 'ok') {
9753: return 'error: '.$reply;
9754: }
9755: $uhome=&homeserver($uname,$udom,'true');
9756: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9757: return 'error: unable verify users home machine.';
9758: }
9759: } # End of creation of new user
9760: # ---------------------------------------------------------------------- Add ID
9761: if ($uid) {
9762: $uid=~tr/A-Z/a-z/;
9763: my %uidhash=&idrget($udom,$uname);
9764: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9765: && (!$forceid)) {
9766: unless ($uid eq $uidhash{$uname}) {
9767: return 'error: user id "'.$uid.'" does not match '.
9768: 'current user id "'.$uidhash{$uname}.'".';
9769: }
9770: } else {
9771: &idput($udom,{$uname => $uid},$uhome,'ids');
9772: }
9773: }
9774: # -------------------------------------------------------------- Add names, etc
9775: my @tmp=&get('environment',
9776: ['firstname','middlename','lastname','generation','id',
9777: 'permanentemail','inststatus'],
9778: $udom,$uname);
9779: my (%names,%oldnames);
9780: if ($tmp[0] =~ m/^error:.*/) {
9781: %names=();
9782: } else {
9783: %names = @tmp;
9784: %oldnames = %names;
9785: }
9786: #
9787: # If name, email and/or uid are blank (e.g., because an uploaded file
9788: # of users did not contain them), do not overwrite existing values
9789: # unless field is in $candelete array ref.
9790: #
9791:
9792: my @fields = ('firstname','middlename','lastname','generation',
9793: 'permanentemail','id');
9794: my %newvalues;
9795: if (ref($candelete) eq 'ARRAY') {
9796: foreach my $field (@fields) {
9797: if (grep(/^\Q$field\E$/,@{$candelete})) {
9798: if ($field eq 'firstname') {
9799: $names{$field} = $first;
9800: } elsif ($field eq 'middlename') {
9801: $names{$field} = $middle;
9802: } elsif ($field eq 'lastname') {
9803: $names{$field} = $last;
9804: } elsif ($field eq 'generation') {
9805: $names{$field} = $gene;
9806: } elsif ($field eq 'permanentemail') {
9807: $names{$field} = $email;
9808: } elsif ($field eq 'id') {
9809: $names{$field} = $uid;
9810: }
9811: }
9812: }
9813: }
9814: if ($first) { $names{'firstname'} = $first; }
9815: if (defined($middle)) { $names{'middlename'} = $middle; }
9816: if ($last) { $names{'lastname'} = $last; }
9817: if (defined($gene)) { $names{'generation'} = $gene; }
9818: if ($email) {
9819: $email=~s/[^\w\@\.\-\,]//gs;
9820: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9821: }
9822: if ($uid) { $names{'id'} = $uid; }
9823: if (defined($inststatus)) {
9824: $names{'inststatus'} = '';
9825: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9826: if (ref($usertypes) eq 'HASH') {
9827: my @okstatuses;
9828: foreach my $item (split(/:/,$inststatus)) {
9829: if (defined($usertypes->{$item})) {
9830: push(@okstatuses,$item);
9831: }
9832: }
9833: if (@okstatuses) {
9834: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9835: }
9836: }
9837: }
9838: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9839: $umode.', '.$first.', '.$middle.', '.
9840: $last.', '.$gene.', '.$email.', '.$inststatus;
9841: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9842: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9843: } else {
9844: $logmsg .= ' during self creation';
9845: }
9846: my $changed;
9847: if ($newuser) {
9848: $changed = 1;
9849: } else {
9850: foreach my $field (@fields) {
9851: if ($names{$field} ne $oldnames{$field}) {
9852: $changed = 1;
9853: last;
9854: }
9855: }
9856: }
9857: unless ($changed) {
9858: $logmsg = 'No changes in user information needed for: '.$logmsg;
9859: &logthis($logmsg);
9860: return 'ok';
9861: }
9862: my $reply = &put('environment', \%names, $udom,$uname);
9863: if ($reply ne 'ok') {
9864: return 'error: '.$reply;
9865: }
9866: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9867: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9868: }
9869: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9870: &devalidate_cache_new('namescache',$uname.':'.$udom);
9871: $logmsg = 'Success modifying user '.$logmsg;
9872: &logthis($logmsg);
9873: return 'ok';
9874: }
9875:
9876: # -------------------------------------------------------------- Modify student
9877:
9878: sub modifystudent {
9879: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9880: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9881: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9882: if (!$cid) {
9883: unless ($cid=$env{'request.course.id'}) {
9884: return 'not_in_class';
9885: }
9886: }
9887: # --------------------------------------------------------------- Make the user
9888: my $reply=&modifyuser
9889: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9890: $desiredhome,$email,$inststatus);
9891: unless ($reply eq 'ok') { return $reply; }
9892: # This will cause &modify_student_enrollment to get the uid from the
9893: # student's environment
9894: $uid = undef if (!$forceid);
9895: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9896: $gene,$usec,$end,$start,$type,$locktype,
9897: $cid,$selfenroll,$context,$credits,$instsec);
9898: return $reply;
9899: }
9900:
9901: sub modify_student_enrollment {
9902: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9903: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9904: my ($cdom,$cnum,$chome);
9905: if (!$cid) {
9906: unless ($cid=$env{'request.course.id'}) {
9907: return 'not_in_class';
9908: }
9909: $cdom=$env{'course.'.$cid.'.domain'};
9910: $cnum=$env{'course.'.$cid.'.num'};
9911: } else {
9912: ($cdom,$cnum)=split(/_/,$cid);
9913: }
9914: $chome=$env{'course.'.$cid.'.home'};
9915: if (!$chome) {
9916: $chome=&homeserver($cnum,$cdom);
9917: }
9918: if (!$chome) { return 'unknown_course'; }
9919: # Make sure the user exists
9920: my $uhome=&homeserver($uname,$udom);
9921: if (($uhome eq '') || ($uhome eq 'no_host')) {
9922: return 'error: no such user';
9923: }
9924: # Get student data if we were not given enough information
9925: if (!defined($first) || $first eq '' ||
9926: !defined($last) || $last eq '' ||
9927: !defined($uid) || $uid eq '' ||
9928: !defined($middle) || $middle eq '' ||
9929: !defined($gene) || $gene eq '') {
9930: # They did not supply us with enough data to enroll the student, so
9931: # we need to pick up more information.
9932: my %tmp = &get('environment',
9933: ['firstname','middlename','lastname', 'generation','id']
9934: ,$udom,$uname);
9935:
9936: #foreach my $key (keys(%tmp)) {
9937: # &logthis("key $key = ".$tmp{$key});
9938: #}
9939: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9940: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9941: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9942: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9943: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9944: }
9945: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9946: my $user = "$uname:$udom";
9947: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9948: my $reply=cput('classlist',
9949: {$user =>
9950: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9951: $cdom,$cnum);
9952: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9953: &devalidate_getsection_cache($udom,$uname,$cid);
9954: } else {
9955: return 'error: '.$reply;
9956: }
9957: # Add student role to user
9958: my $uurl='/'.$cid;
9959: $uurl=~s/\_/\//g;
9960: if ($usec) {
9961: $uurl.='/'.$usec;
9962: }
9963: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9964: $selfenroll,$context);
9965: if ($result ne 'ok') {
9966: if ($old_entry{$user} ne '') {
9967: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9968: } else {
9969: $reply = &del('classlist',[$user],$cdom,$cnum);
9970: }
9971: }
9972: return $result;
9973: }
9974:
9975: sub format_name {
9976: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9977: my $name;
9978: if ($first ne 'lastname') {
9979: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9980: } else {
9981: if ($lastname=~/\S/) {
9982: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9983: $name=~s/\s+,/,/;
9984: } else {
9985: $name.= $firstname.' '.$middlename.' '.$generation;
9986: }
9987: }
9988: $name=~s/^\s+//;
9989: $name=~s/\s+$//;
9990: $name=~s/\s+/ /g;
9991: return $name;
9992: }
9993:
9994: # ------------------------------------------------- Write to course preferences
9995:
9996: sub writecoursepref {
9997: my ($courseid,%prefs)=@_;
9998: $courseid=~s/^\///;
9999: $courseid=~s/\_/\//g;
10000: my ($cdomain,$cnum)=split(/\//,$courseid);
10001: my $chome=homeserver($cnum,$cdomain);
10002: if (($chome eq '') || ($chome eq 'no_host')) {
10003: return 'error: no such course';
10004: }
10005: my $cstring='';
10006: foreach my $pref (keys(%prefs)) {
10007: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10008: }
10009: $cstring=~s/\&$//;
10010: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10011: }
10012:
10013: # ---------------------------------------------------------- Make/modify course
10014:
10015: sub createcourse {
10016: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10017: $course_owner,$crstype,$cnum,$context,$category)=@_;
10018: $url=&declutter($url);
10019: my $cid='';
10020: if ($context eq 'requestcourses') {
10021: my $can_create = 0;
10022: my ($ownername,$ownerdom) = split(':',$course_owner);
10023: if ($udom eq $ownerdom) {
10024: if (&usertools_access($ownername,$ownerdom,$category,undef,
10025: $context)) {
10026: $can_create = 1;
10027: }
10028: } else {
10029: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10030: $category);
10031: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10032: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10033: if (@curr > 0) {
10034: my @options = qw(approval validate autolimit);
10035: my $optregex = join('|',@options);
10036: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10037: $can_create = 1;
10038: }
10039: }
10040: }
10041: }
10042: if ($can_create) {
10043: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10044: unless (&allowed('ccc',$udom)) {
10045: return 'refused';
10046: }
10047: }
10048: } else {
10049: return 'refused';
10050: }
10051: } elsif (!&allowed('ccc',$udom)) {
10052: return 'refused';
10053: }
10054: # --------------------------------------------------------------- Get Unique ID
10055: my $uname;
10056: if ($cnum =~ /^$match_courseid$/) {
10057: my $chome=&homeserver($cnum,$udom,'true');
10058: if (($chome eq '') || ($chome eq 'no_host')) {
10059: $uname = $cnum;
10060: } else {
10061: $uname = &generate_coursenum($udom,$crstype);
10062: }
10063: } else {
10064: $uname = &generate_coursenum($udom,$crstype);
10065: }
10066: return $uname if ($uname =~ /^error/);
10067: # -------------------------------------------------- Check supplied server name
10068: if (!defined($course_server)) {
10069: if (defined(&domain($udom,'primary'))) {
10070: $course_server = &domain($udom,'primary');
10071: } else {
10072: $course_server = $env{'user.home'};
10073: }
10074: }
10075: my %host_servers =
10076: &Apache::lonnet::get_servers($udom,'library');
10077: unless ($host_servers{$course_server}) {
10078: return 'error: invalid home server for course: '.$course_server;
10079: }
10080: # ------------------------------------------------------------- Make the course
10081: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10082: $course_server);
10083: unless ($reply eq 'ok') { return 'error: '.$reply; }
10084: my $uhome=&homeserver($uname,$udom,'true');
10085: if (($uhome eq '') || ($uhome eq 'no_host')) {
10086: return 'error: no such course';
10087: }
10088: # ----------------------------------------------------------------- Course made
10089: # log existence
10090: my $now = time;
10091: my $newcourse = {
10092: $udom.'_'.$uname => {
10093: description => $description,
10094: inst_code => $inst_code,
10095: owner => $course_owner,
10096: type => $crstype,
10097: creator => $env{'user.name'}.':'.
10098: $env{'user.domain'},
10099: created => $now,
10100: context => $context,
10101: },
10102: };
10103: &courseidput($udom,$newcourse,$uhome,'notime');
10104: # set toplevel url
10105: my $topurl=$url;
10106: unless ($nonstandard) {
10107: # ------------------------------------------ For standard courses, make top url
10108: my $mapurl=&clutter($url);
10109: if ($mapurl eq '/res/') { $mapurl=''; }
10110: $env{'form.initmap'}=(<<ENDINITMAP);
10111: <map>
10112: <resource id="1" type="start"></resource>
10113: <resource id="2" src="$mapurl"></resource>
10114: <resource id="3" type="finish"></resource>
10115: <link index="1" from="1" to="2"></link>
10116: <link index="2" from="2" to="3"></link>
10117: </map>
10118: ENDINITMAP
10119: $topurl=&declutter(
10120: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10121: );
10122: }
10123: # ----------------------------------------------------------- Write preferences
10124: &writecoursepref($udom.'_'.$uname,
10125: ('description' => $description,
10126: 'url' => $topurl,
10127: 'internal.creator' => $env{'user.name'}.':'.
10128: $env{'user.domain'},
10129: 'internal.created' => $now,
10130: 'internal.creationcontext' => $context)
10131: );
10132: return '/'.$udom.'/'.$uname;
10133: }
10134:
10135: # ------------------------------------------------------------------- Create ID
10136: sub generate_coursenum {
10137: my ($udom,$crstype) = @_;
10138: my $domdesc = &domain($udom);
10139: return 'error: invalid domain' if ($domdesc eq '');
10140: my $first;
10141: if ($crstype eq 'Community') {
10142: $first = '0';
10143: } else {
10144: $first = int(1+rand(9));
10145: }
10146: my $uname=$first.
10147: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10148: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10149: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10150: # ----------------------------------------------- Make sure that does not exist
10151: my $uhome=&homeserver($uname,$udom,'true');
10152: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10153: if ($crstype eq 'Community') {
10154: $first = '0';
10155: } else {
10156: $first = int(1+rand(9));
10157: }
10158: $uname=$first.
10159: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10160: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10161: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10162: $uhome=&homeserver($uname,$udom,'true');
10163: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10164: return 'error: unable to generate unique course-ID';
10165: }
10166: }
10167: return $uname;
10168: }
10169:
10170: sub is_course {
10171: my ($cdom, $cnum) = scalar(@_) == 1 ?
10172: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10173:
10174: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10175: my $uhome=&homeserver($cnum,$cdom);
10176: my $iscourse;
10177: if (grep { $_ eq $uhome } current_machine_ids()) {
10178: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10179: } else {
10180: my $hashid = $cdom.':'.$cnum;
10181: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10182: unless (defined($cached)) {
10183: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10184: $cnum,undef,undef,'.');
10185: $iscourse = 0;
10186: if (exists($courses{$cdom.'_'.$cnum})) {
10187: $iscourse = 1;
10188: }
10189: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10190: }
10191: }
10192: return unless ($iscourse);
10193: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10194: }
10195:
10196: sub store_userdata {
10197: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10198: my $result;
10199: if ($datakey ne '') {
10200: if (ref($storehash) eq 'HASH') {
10201: if ($udom eq '' || $uname eq '') {
10202: $udom = $env{'user.domain'};
10203: $uname = $env{'user.name'};
10204: }
10205: my $uhome=&homeserver($uname,$udom);
10206: if (($uhome eq '') || ($uhome eq 'no_host')) {
10207: $result = 'error: no_host';
10208: } else {
10209: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10210: $storehash->{'host'} = $perlvar{'lonHostID'};
10211:
10212: my $namevalue='';
10213: foreach my $key (keys(%{$storehash})) {
10214: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10215: }
10216: $namevalue=~s/\&$//;
10217: unless ($namespace eq 'courserequests') {
10218: $datakey = &escape($datakey);
10219: }
10220: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10221: $namevalue,$uhome);
10222: }
10223: } else {
10224: $result = 'error: data to store was not a hash reference';
10225: }
10226: } else {
10227: $result= 'error: invalid requestkey';
10228: }
10229: return $result;
10230: }
10231:
10232: # ---------------------------------------------------------- Assign Custom Role
10233:
10234: sub assigncustomrole {
10235: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10236: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10237: $end,$start,$deleteflag,$selfenroll,$context);
10238: }
10239:
10240: # ----------------------------------------------------------------- Revoke Role
10241:
10242: sub revokerole {
10243: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10244: my $now=time;
10245: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10246: }
10247:
10248: # ---------------------------------------------------------- Revoke Custom Role
10249:
10250: sub revokecustomrole {
10251: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10252: my $now=time;
10253: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10254: $deleteflag,$selfenroll,$context);
10255: }
10256:
10257: # ------------------------------------------------------------ Disk usage
10258: sub diskusage {
10259: my ($udom,$uname,$directorypath,$getpropath)=@_;
10260: $directorypath =~ s/\/$//;
10261: my $listing=&reply('du2:'.&escape($directorypath).':'
10262: .&escape($getpropath).':'.&escape($uname).':'
10263: .&escape($udom),homeserver($uname,$udom));
10264: if ($listing eq 'unknown_cmd') {
10265: if ($getpropath) {
10266: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10267: }
10268: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10269: }
10270: return $listing;
10271: }
10272:
10273: sub is_locked {
10274: my ($file_name, $domain, $user, $which) = @_;
10275: my @check;
10276: my $is_locked;
10277: push (@check,$file_name);
10278: my %locked = &get('file_permissions',\@check,
10279: $env{'user.domain'},$env{'user.name'});
10280: my ($tmp)=keys(%locked);
10281: if ($tmp=~/^error:/) { undef(%locked); }
10282:
10283: if (ref($locked{$file_name}) eq 'ARRAY') {
10284: $is_locked = 'false';
10285: foreach my $entry (@{$locked{$file_name}}) {
10286: if (ref($entry) eq 'ARRAY') {
10287: $is_locked = 'true';
10288: if (ref($which) eq 'ARRAY') {
10289: push(@{$which},$entry);
10290: } else {
10291: last;
10292: }
10293: }
10294: }
10295: } else {
10296: $is_locked = 'false';
10297: }
10298: return $is_locked;
10299: }
10300:
10301: sub declutter_portfile {
10302: my ($file) = @_;
10303: $file =~ s{^(/portfolio/|portfolio/)}{/};
10304: return $file;
10305: }
10306:
10307: # ------------------------------------------------------------- Mark as Read Only
10308:
10309: sub mark_as_readonly {
10310: my ($domain,$user,$files,$what) = @_;
10311: my %current_permissions = &dump('file_permissions',$domain,$user);
10312: my ($tmp)=keys(%current_permissions);
10313: if ($tmp=~/^error:/) { undef(%current_permissions); }
10314: foreach my $file (@{$files}) {
10315: $file = &declutter_portfile($file);
10316: push(@{$current_permissions{$file}},$what);
10317: }
10318: &put('file_permissions',\%current_permissions,$domain,$user);
10319: return;
10320: }
10321:
10322: # ------------------------------------------------------------Save Selected Files
10323:
10324: sub save_selected_files {
10325: my ($user, $path, @files) = @_;
10326: my $filename = $user."savedfiles";
10327: my @other_files = &files_not_in_path($user, $path);
10328: open (OUT,'>',LONCAPA::tempdir().$filename);
10329: foreach my $file (@files) {
10330: print (OUT $env{'form.currentpath'}.$file."\n");
10331: }
10332: foreach my $file (@other_files) {
10333: print (OUT $file."\n");
10334: }
10335: close (OUT);
10336: return 'ok';
10337: }
10338:
10339: sub clear_selected_files {
10340: my ($user) = @_;
10341: my $filename = $user."savedfiles";
10342: open (OUT,'>',LONCAPA::tempdir().$filename);
10343: print (OUT undef);
10344: close (OUT);
10345: return ("ok");
10346: }
10347:
10348: sub files_in_path {
10349: my ($user, $path) = @_;
10350: my $filename = $user."savedfiles";
10351: my %return_files;
10352: open (IN,'<',LONCAPA::tempdir().$filename);
10353: while (my $line_in = <IN>) {
10354: chomp ($line_in);
10355: my @paths_and_file = split (m!/!, $line_in);
10356: my $file_part = pop (@paths_and_file);
10357: my $path_part = join ('/', @paths_and_file);
10358: $path_part.='/';
10359: my $path_and_file = $path_part.$file_part;
10360: if ($path_part eq $path) {
10361: $return_files{$file_part}= 'selected';
10362: }
10363: }
10364: close (IN);
10365: return (\%return_files);
10366: }
10367:
10368: # called in portfolio select mode, to show files selected NOT in current directory
10369: sub files_not_in_path {
10370: my ($user, $path) = @_;
10371: my $filename = $user."savedfiles";
10372: my @return_files;
10373: my $path_part;
10374: open(IN, '<',LONCAPA::tempdir().$filename);
10375: while (my $line = <IN>) {
10376: #ok, I know it's clunky, but I want it to work
10377: my @paths_and_file = split(m|/|, $line);
10378: my $file_part = pop(@paths_and_file);
10379: chomp($file_part);
10380: my $path_part = join('/', @paths_and_file);
10381: $path_part .= '/';
10382: my $path_and_file = $path_part.$file_part;
10383: if ($path_part ne $path) {
10384: push(@return_files, ($path_and_file));
10385: }
10386: }
10387: close(OUT);
10388: return (@return_files);
10389: }
10390:
10391: #------------------------------Submitted/Handedback Portfolio Files Versioning
10392:
10393: sub portfiles_versioning {
10394: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10395: my $portfolio_root = '/userfiles/portfolio';
10396: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10397: foreach my $file (@{$portfiles}) {
10398: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10399: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10400: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10401: my $getpropath = 1;
10402: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10403: $stu_name,$getpropath);
10404: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10405: my $new_answer =
10406: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10407: if ($new_answer ne 'problem getting file') {
10408: push(@{$versioned_portfiles}, $directory.$new_answer);
10409: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10410: [$symb,$env{'request.course.id'},'graded']);
10411: }
10412: }
10413: }
10414:
10415: sub get_next_version {
10416: my ($answer_name, $answer_ext, $dir_list) = @_;
10417: my $version;
10418: if (ref($dir_list) eq 'ARRAY') {
10419: foreach my $row (@{$dir_list}) {
10420: my ($file) = split(/\&/,$row,2);
10421: my ($file_name,$file_version,$file_ext) =
10422: &file_name_version_ext($file);
10423: if (($file_name eq $answer_name) &&
10424: ($file_ext eq $answer_ext)) {
10425: # gets here if filename and extension match,
10426: # regardless of version
10427: if ($file_version ne '') {
10428: # a versioned file is found so save it for later
10429: if ($file_version > $version) {
10430: $version = $file_version;
10431: }
10432: }
10433: }
10434: }
10435: }
10436: $version ++;
10437: return($version);
10438: }
10439:
10440: sub version_selected_portfile {
10441: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10442: my ($answer_name,$answer_ver,$answer_ext) =
10443: &file_name_version_ext($file_name);
10444: my $new_answer;
10445: $env{'form.copy'} =
10446: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10447: if($env{'form.copy'} eq '-1') {
10448: $new_answer = 'problem getting file';
10449: } else {
10450: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10451: my $copy_result =
10452: &finishuserfileupload($stu_name,$domain,'copy',
10453: '/portfolio'.$directory.$new_answer);
10454: }
10455: undef($env{'form.copy'});
10456: return ($new_answer);
10457: }
10458:
10459: sub file_name_version_ext {
10460: my ($file)=@_;
10461: my @file_parts = split(/\./, $file);
10462: my ($name,$version,$ext);
10463: if (@file_parts > 1) {
10464: $ext=pop(@file_parts);
10465: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10466: $version=pop(@file_parts);
10467: }
10468: $name=join('.',@file_parts);
10469: } else {
10470: $name=join('.',@file_parts);
10471: }
10472: return($name,$version,$ext);
10473: }
10474:
10475: #----------------------------------------------Get portfolio file permissions
10476:
10477: sub get_portfile_permissions {
10478: my ($domain,$user) = @_;
10479: my %current_permissions = &dump('file_permissions',$domain,$user);
10480: my ($tmp)=keys(%current_permissions);
10481: if ($tmp=~/^error:/) { undef(%current_permissions); }
10482: return \%current_permissions;
10483: }
10484:
10485: #---------------------------------------------Get portfolio file access controls
10486:
10487: sub get_access_controls {
10488: my ($current_permissions,$group,$file) = @_;
10489: my %access;
10490: my $real_file = $file;
10491: $file =~ s/\.meta$//;
10492: if (defined($file)) {
10493: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10494: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10495: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10496: }
10497: }
10498: } else {
10499: foreach my $key (keys(%{$current_permissions})) {
10500: if ($key =~ /\0accesscontrol$/) {
10501: if (defined($group)) {
10502: if ($key !~ m-^\Q$group\E/-) {
10503: next;
10504: }
10505: }
10506: my ($fullpath) = split(/\0/,$key);
10507: if (ref($$current_permissions{$key}) eq 'HASH') {
10508: foreach my $control (keys(%{$$current_permissions{$key}})) {
10509: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10510: }
10511: }
10512: }
10513: }
10514: }
10515: return %access;
10516: }
10517:
10518: sub modify_access_controls {
10519: my ($file_name,$changes,$domain,$user)=@_;
10520: my ($outcome,$deloutcome);
10521: my %store_permissions;
10522: my %new_values;
10523: my %new_control;
10524: my %translation;
10525: my @deletions = ();
10526: my $now = time;
10527: if (exists($$changes{'activate'})) {
10528: if (ref($$changes{'activate'}) eq 'HASH') {
10529: my @newitems = sort(keys(%{$$changes{'activate'}}));
10530: my $numnew = scalar(@newitems);
10531: for (my $i=0; $i<$numnew; $i++) {
10532: my $newkey = $newitems[$i];
10533: my $newid = &Apache::loncommon::get_cgi_id();
10534: if ($newkey =~ /^\d+:/) {
10535: $newkey =~ s/^(\d+)/$newid/;
10536: $translation{$1} = $newid;
10537: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10538: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10539: $translation{$1} = $newid;
10540: }
10541: $new_values{$file_name."\0".$newkey} =
10542: $$changes{'activate'}{$newitems[$i]};
10543: $new_control{$newkey} = $now;
10544: }
10545: }
10546: }
10547: my %todelete;
10548: my %changed_items;
10549: foreach my $action ('delete','update') {
10550: if (exists($$changes{$action})) {
10551: if (ref($$changes{$action}) eq 'HASH') {
10552: foreach my $key (keys(%{$$changes{$action}})) {
10553: my ($itemnum) = ($key =~ /^([^:]+):/);
10554: if ($action eq 'delete') {
10555: $todelete{$itemnum} = 1;
10556: } else {
10557: $changed_items{$itemnum} = $key;
10558: }
10559: }
10560: }
10561: }
10562: }
10563: # get lock on access controls for file.
10564: my $lockhash = {
10565: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10566: ':'.$env{'user.domain'},
10567: };
10568: my $tries = 0;
10569: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10570:
10571: while (($gotlock ne 'ok') && $tries < 10) {
10572: $tries ++;
10573: sleep(0.1);
10574: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10575: }
10576: if ($gotlock eq 'ok') {
10577: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10578: my ($tmp)=keys(%curr_permissions);
10579: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10580: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10581: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10582: if (ref($curr_controls) eq 'HASH') {
10583: foreach my $control_item (keys(%{$curr_controls})) {
10584: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10585: if (defined($todelete{$itemnum})) {
10586: push(@deletions,$file_name."\0".$control_item);
10587: } else {
10588: if (defined($changed_items{$itemnum})) {
10589: $new_control{$changed_items{$itemnum}} = $now;
10590: push(@deletions,$file_name."\0".$control_item);
10591: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10592: } else {
10593: $new_control{$control_item} = $$curr_controls{$control_item};
10594: }
10595: }
10596: }
10597: }
10598: }
10599: my ($group);
10600: if (&is_course($domain,$user)) {
10601: ($group,my $file) = split(/\//,$file_name,2);
10602: }
10603: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10604: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10605: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10606: # remove lock
10607: my @del_lock = ($file_name."\0".'locked_access_records');
10608: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10609: my $sqlresult =
10610: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10611: $group);
10612: } else {
10613: $outcome = "error: could not obtain lockfile\n";
10614: }
10615: return ($outcome,$deloutcome,\%new_values,\%translation);
10616: }
10617:
10618: sub make_public_indefinitely {
10619: my (@requrl) = @_;
10620: return &automated_portfile_access('public',\@requrl);
10621: }
10622:
10623: sub automated_portfile_access {
10624: my ($accesstype,$addsref,$delsref,$info) = @_;
10625: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10626: return 'invalid';
10627: }
10628: my %urls;
10629: if (ref($addsref) eq 'ARRAY') {
10630: foreach my $requrl (@{$addsref}) {
10631: if (&is_portfolio_url($requrl)) {
10632: unless (exists($urls{$requrl})) {
10633: $urls{$requrl} = 'add';
10634: }
10635: }
10636: }
10637: }
10638: if (ref($delsref) eq 'ARRAY') {
10639: foreach my $requrl (@{$delsref}) {
10640: if (&is_portfolio_url($requrl)) {
10641: unless (exists($urls{$requrl})) {
10642: $urls{$requrl} = 'delete';
10643: }
10644: }
10645: }
10646: }
10647: unless (keys(%urls)) {
10648: return 'invalid';
10649: }
10650: my $ip;
10651: if ($accesstype eq 'ip') {
10652: if (ref($info) eq 'HASH') {
10653: if ($info->{'ip'} ne '') {
10654: $ip = $info->{'ip'};
10655: }
10656: }
10657: if ($ip eq '') {
10658: return 'invalid';
10659: }
10660: }
10661: my $errors;
10662: my $now = time;
10663: my %current_perms;
10664: foreach my $requrl (sort(keys(%urls))) {
10665: my $action;
10666: if ($urls{$requrl} eq 'add') {
10667: $action = 'activate';
10668: } else {
10669: $action = 'none';
10670: }
10671: my $aclnum = 0;
10672: my (undef,$udom,$unum,$file_name,$group) =
10673: &parse_portfolio_url($requrl);
10674: unless (exists($current_perms{$unum.':'.$udom})) {
10675: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10676: }
10677: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10678: $group,$file_name);
10679: foreach my $key (keys(%{$access_controls{$file_name}})) {
10680: my ($num,$scope,$end,$start) =
10681: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10682: if ($scope eq $accesstype) {
10683: if (($start <= $now) && ($end == 0)) {
10684: if ($accesstype eq 'ip') {
10685: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10686: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10687: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10688: if ($urls{$requrl} eq 'add') {
10689: $action = 'none';
10690: last;
10691: } else {
10692: $action = 'delete';
10693: $aclnum = $num;
10694: last;
10695: }
10696: }
10697: }
10698: }
10699: } elsif ($accesstype eq 'public') {
10700: if ($urls{$requrl} eq 'add') {
10701: $action = 'none';
10702: last;
10703: } else {
10704: $action = 'delete';
10705: $aclnum = $num;
10706: last;
10707: }
10708: }
10709: } elsif ($accesstype eq 'public') {
10710: $action = 'update';
10711: $aclnum = $num;
10712: last;
10713: }
10714: }
10715: }
10716: if ($action eq 'none') {
10717: next;
10718: } else {
10719: my %changes;
10720: my $newend = 0;
10721: my $newstart = $now;
10722: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10723: $changes{$action}{$newkey} = {
10724: type => $accesstype,
10725: time => {
10726: start => $newstart,
10727: end => $newend,
10728: },
10729: };
10730: if ($accesstype eq 'ip') {
10731: $changes{$action}{$newkey}{'ip'} = [$ip];
10732: }
10733: my ($outcome,$deloutcome,$new_values,$translation) =
10734: &modify_access_controls($file_name,\%changes,$udom,$unum);
10735: unless ($outcome eq 'ok') {
10736: $errors .= $outcome.' ';
10737: }
10738: }
10739: }
10740: if ($errors) {
10741: $errors =~ s/\s$//;
10742: return $errors;
10743: } else {
10744: return 'ok';
10745: }
10746: }
10747:
10748: #------------------------------------------------------Get Marked as Read Only
10749:
10750: sub get_marked_as_readonly {
10751: my ($domain,$user,$what,$group) = @_;
10752: my $current_permissions = &get_portfile_permissions($domain,$user);
10753: my @readonly_files;
10754: my $cmp1=$what;
10755: if (ref($what)) { $cmp1=join('',@{$what}) };
10756: while (my ($file_name,$value) = each(%{$current_permissions})) {
10757: if (defined($group)) {
10758: if ($file_name !~ m-^\Q$group\E/-) {
10759: next;
10760: }
10761: }
10762: if (ref($value) eq "ARRAY"){
10763: foreach my $stored_what (@{$value}) {
10764: my $cmp2=$stored_what;
10765: if (ref($stored_what) eq 'ARRAY') {
10766: $cmp2=join('',@{$stored_what});
10767: }
10768: if ($cmp1 eq $cmp2) {
10769: push(@readonly_files, $file_name);
10770: last;
10771: } elsif (!defined($what)) {
10772: push(@readonly_files, $file_name);
10773: last;
10774: }
10775: }
10776: }
10777: }
10778: return @readonly_files;
10779: }
10780: #-----------------------------------------------------------Get Marked as Read Only Hash
10781:
10782: sub get_marked_as_readonly_hash {
10783: my ($current_permissions,$group,$what) = @_;
10784: my %readonly_files;
10785: while (my ($file_name,$value) = each(%{$current_permissions})) {
10786: if (defined($group)) {
10787: if ($file_name !~ m-^\Q$group\E/-) {
10788: next;
10789: }
10790: }
10791: if (ref($value) eq "ARRAY"){
10792: foreach my $stored_what (@{$value}) {
10793: if (ref($stored_what) eq 'ARRAY') {
10794: foreach my $lock_descriptor(@{$stored_what}) {
10795: if ($lock_descriptor eq 'graded') {
10796: $readonly_files{$file_name} = 'graded';
10797: } elsif ($lock_descriptor eq 'handback') {
10798: $readonly_files{$file_name} = 'handback';
10799: } else {
10800: if (!exists($readonly_files{$file_name})) {
10801: $readonly_files{$file_name} = 'locked';
10802: }
10803: }
10804: }
10805: }
10806: }
10807: }
10808: }
10809: return %readonly_files;
10810: }
10811: # ------------------------------------------------------------ Unmark as Read Only
10812:
10813: sub unmark_as_readonly {
10814: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10815: # for portfolio submissions, $what contains [$symb,$crsid]
10816: my ($domain,$user,$what,$file_name,$group) = @_;
10817: $file_name = &declutter_portfile($file_name);
10818: my $symb_crs = $what;
10819: if (ref($what)) { $symb_crs=join('',@$what); }
10820: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10821: my ($tmp)=keys(%current_permissions);
10822: if ($tmp=~/^error:/) { undef(%current_permissions); }
10823: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10824: foreach my $file (@readonly_files) {
10825: my $clean_file = &declutter_portfile($file);
10826: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10827: my $current_locks = $current_permissions{$file};
10828: my @new_locks;
10829: my @del_keys;
10830: if (ref($current_locks) eq "ARRAY"){
10831: foreach my $locker (@{$current_locks}) {
10832: my $compare=$locker;
10833: if (ref($locker) eq 'ARRAY') {
10834: $compare=join('',@{$locker});
10835: if ($compare ne $symb_crs) {
10836: push(@new_locks, $locker);
10837: }
10838: }
10839: }
10840: if (scalar(@new_locks) > 0) {
10841: $current_permissions{$file} = \@new_locks;
10842: } else {
10843: push(@del_keys, $file);
10844: &del('file_permissions',\@del_keys, $domain, $user);
10845: delete($current_permissions{$file});
10846: }
10847: }
10848: }
10849: &put('file_permissions',\%current_permissions,$domain,$user);
10850: return;
10851: }
10852:
10853: # ------------------------------------------------------------ Directory lister
10854:
10855: sub dirlist {
10856: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10857: $uri=~s/^\///;
10858: $uri=~s/\/$//;
10859: my ($udom, $uname);
10860: if ($getuserdir) {
10861: $udom = $userdomain;
10862: $uname = $username;
10863: } else {
10864: (undef,$udom,$uname)=split(/\//,$uri);
10865: if(defined($userdomain)) {
10866: $udom = $userdomain;
10867: }
10868: if(defined($username)) {
10869: $uname = $username;
10870: }
10871: }
10872: my ($dirRoot,$listing,@listing_results);
10873:
10874: $dirRoot = $perlvar{'lonDocRoot'};
10875: if (defined($getpropath)) {
10876: $dirRoot = &propath($udom,$uname);
10877: $dirRoot =~ s/\/$//;
10878: } elsif (defined($getuserdir)) {
10879: my $subdir=$uname.'__';
10880: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10881: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10882: ."/$udom/$subdir/$uname";
10883: } elsif (defined($alternateRoot)) {
10884: $dirRoot = $alternateRoot;
10885: }
10886:
10887: if($udom) {
10888: if($uname) {
10889: my $uhome = &homeserver($uname,$udom);
10890: if ($uhome eq 'no_host') {
10891: return ([],'no_host');
10892: }
10893: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10894: .$getuserdir.':'.&escape($dirRoot)
10895: .':'.&escape($uname).':'.&escape($udom),$uhome);
10896: if ($listing eq 'unknown_cmd') {
10897: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10898: } else {
10899: @listing_results = map { &unescape($_); } split(/:/,$listing);
10900: }
10901: if ($listing eq 'unknown_cmd') {
10902: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10903: @listing_results = split(/:/,$listing);
10904: } else {
10905: @listing_results = map { &unescape($_); } split(/:/,$listing);
10906: }
10907: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10908: ($listing eq 'rejected') || ($listing eq 'refused') ||
10909: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10910: return ([],$listing);
10911: } else {
10912: return (\@listing_results);
10913: }
10914: } elsif(!$alternateRoot) {
10915: my (%allusers,%listerror);
10916: my %servers = &get_servers($udom,'library');
10917: foreach my $tryserver (keys(%servers)) {
10918: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10919: &escape($udom),$tryserver);
10920: if ($listing eq 'unknown_cmd') {
10921: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10922: $udom, $tryserver);
10923: } else {
10924: @listing_results = map { &unescape($_); } split(/:/,$listing);
10925: }
10926: if ($listing eq 'unknown_cmd') {
10927: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10928: $udom, $tryserver);
10929: @listing_results = split(/:/,$listing);
10930: } else {
10931: @listing_results =
10932: map { &unescape($_); } split(/:/,$listing);
10933: }
10934: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10935: ($listing eq 'rejected') || ($listing eq 'refused') ||
10936: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10937: $listerror{$tryserver} = $listing;
10938: } else {
10939: foreach my $line (@listing_results) {
10940: my ($entry) = split(/&/,$line,2);
10941: $allusers{$entry} = 1;
10942: }
10943: }
10944: }
10945: my @alluserslist=();
10946: foreach my $user (sort(keys(%allusers))) {
10947: push(@alluserslist,$user.'&user');
10948: }
10949:
10950: if (!%listerror) {
10951: # no errors
10952: return (\@alluserslist);
10953: } elsif (scalar(keys(%servers)) == 1) {
10954: # one library server, one error
10955: my ($key) = keys(%listerror);
10956: return (\@alluserslist, $listerror{$key});
10957: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10958: # con_lost indicates that we might miss data from at least one
10959: # library server
10960: return (\@alluserslist, 'con_lost');
10961: } else {
10962: # multiple library servers and no con_lost -> data should be
10963: # complete.
10964: return (\@alluserslist);
10965: }
10966:
10967: } else {
10968: return ([],'missing username');
10969: }
10970: } elsif(!defined($getpropath)) {
10971: my $path = $perlvar{'lonDocRoot'}.'/res/';
10972: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10973: return (\@all_domains);
10974: } else {
10975: return ([],'missing domain');
10976: }
10977: }
10978:
10979: # --------------------------------------------- GetFileTimestamp
10980: # This function utilizes dirlist and returns the date stamp for
10981: # when it was last modified. It will also return an error of -1
10982: # if an error occurs
10983:
10984: sub GetFileTimestamp {
10985: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10986: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10987: $studentName = &LONCAPA::clean_username($studentName);
10988: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10989: undef,$getuserdir);
10990: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10991: return -1;
10992: }
10993: if (ref($fileref) eq 'ARRAY') {
10994: my @stats = split('&',$fileref->[0]);
10995: # @stats contains first the filename, then the stat output
10996: return $stats[10]; # so this is 10 instead of 9.
10997: } else {
10998: return -1;
10999: }
11000: }
11001:
11002: sub stat_file {
11003: my ($uri) = @_;
11004: $uri = &clutter_with_no_wrapper($uri);
11005:
11006: my ($udom,$uname,$file);
11007: if ($uri =~ m-^/(uploaded|editupload)/-) {
11008: ($udom,$uname,$file) =
11009: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11010: $file = 'userfiles/'.$file;
11011: }
11012: if ($uri =~ m-^/res/-) {
11013: ($udom,$uname) =
11014: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11015: $file = $uri;
11016: }
11017:
11018: if (!$udom || !$uname || !$file) {
11019: # unable to handle the uri
11020: return ();
11021: }
11022: my $getpropath;
11023: if ($file =~ /^userfiles\//) {
11024: $getpropath = 1;
11025: }
11026: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11027: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11028: return ();
11029: } else {
11030: if (ref($listref) eq 'ARRAY') {
11031: my @stats = split('&',$listref->[0]);
11032: shift(@stats); #filename is first
11033: return @stats;
11034: }
11035: }
11036: return ();
11037: }
11038:
11039: # --------------------------------------------------------- recursedirs
11040: # Recursive function to traverse either a specific user's Authoring Space
11041: # or corresponding Published Resource Space, and populate the hash ref:
11042: # $dirhashref with URLs of all directories, and if $filehashref hash
11043: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11044: # or .rights files in resource space, and .meta, .save, .log, and .bak
11045: # files in Authoring Space.
11046: #
11047: # Inputs:
11048: #
11049: # $is_home - true if current server is home server for user's space
11050: # $context - either: priv, or res respectively for Authoring or Resource Space.
11051: # $docroot - Document root (i.e., /home/httpd/html
11052: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11053: # $relpath - Current path (relative to top level).
11054: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11055: # $filehashref - reference to hash to populate with URLs of files (Optional)
11056: #
11057: # Returns: nothing
11058: #
11059: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11060: #
11061: # Currently used by interface/londocs.pm to create linked select boxes for
11062: # directory and filename to import a Course "Author" resource into a course, and
11063: # also to create linked select boxes for Authoring Space and Directory to choose
11064: # save location for creation of a new "standard" problem from the Course Editor.
11065: #
11066:
11067: sub recursedirs {
11068: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11069: return unless (ref($dirhashref) eq 'HASH');
11070: my $currpath = $docroot.$toppath;
11071: if ($relpath) {
11072: $currpath .= "/$relpath";
11073: }
11074: my $savefile;
11075: if (ref($filehashref)) {
11076: $savefile = 1;
11077: }
11078: if ($is_home) {
11079: if (opendir(my $dirh,$currpath)) {
11080: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11081: next if ($item eq '');
11082: if (-d "$currpath/$item") {
11083: my $newpath;
11084: if ($relpath) {
11085: $newpath = "$relpath/$item";
11086: } else {
11087: $newpath = $item;
11088: }
11089: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11090: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11091: } elsif ($savefile) {
11092: if ($context eq 'priv') {
11093: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11094: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11095: }
11096: } else {
11097: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11098: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11099: }
11100: }
11101: }
11102: }
11103: closedir($dirh);
11104: }
11105: } else {
11106: my ($dirlistref,$listerror) =
11107: &dirlist($toppath.$relpath);
11108: my @dir_lines;
11109: my $dirptr=16384;
11110: if (ref($dirlistref) eq 'ARRAY') {
11111: foreach my $dir_line (sort
11112: {
11113: my ($afile)=split('&',$a,2);
11114: my ($bfile)=split('&',$b,2);
11115: return (lc($afile) cmp lc($bfile));
11116: } (@{$dirlistref})) {
11117: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11118: split(/\&/,$dir_line,16);
11119: $item =~ s/\s+$//;
11120: next if (($item =~ /^\.\.?$/) || ($obs));
11121: if ($dirptr&$testdir) {
11122: my $newpath;
11123: if ($relpath) {
11124: $newpath = "$relpath/$item";
11125: } else {
11126: $relpath = '/';
11127: $newpath = $item;
11128: }
11129: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11130: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11131: } elsif ($savefile) {
11132: if ($context eq 'priv') {
11133: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11134: $filehashref->{$relpath}{$item} = 1;
11135: }
11136: } else {
11137: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11138: $filehashref->{$relpath}{$item} = 1;
11139: }
11140: }
11141: }
11142: }
11143: }
11144: }
11145: return;
11146: }
11147:
11148: # -------------------------------------------------------- Value of a Condition
11149:
11150: # gets the value of a specific preevaluated condition
11151: # stored in the string $env{user.state.<cid>}
11152: # or looks up a condition reference in the bighash and if if hasn't
11153: # already been evaluated recurses into docondval to get the value of
11154: # the condition, then memoizing it to
11155: # $env{user.state.<cid>.<condition>}
11156: sub directcondval {
11157: my $number=shift;
11158: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11159: &Apache::lonuserstate::evalstate();
11160: }
11161: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11162: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11163: } elsif ($number =~ /^_/) {
11164: my $sub_condition;
11165: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11166: &GDBM_READER(),0640)) {
11167: $sub_condition=$bighash{'conditions'.$number};
11168: untie(%bighash);
11169: }
11170: my $value = &docondval($sub_condition);
11171: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11172: return $value;
11173: }
11174: if ($env{'user.state.'.$env{'request.course.id'}}) {
11175: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11176: } else {
11177: return 2;
11178: }
11179: }
11180:
11181: # get the collection of conditions for this resource
11182: sub condval {
11183: my $condidx=shift;
11184: my $allpathcond='';
11185: foreach my $cond (split(/\|/,$condidx)) {
11186: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11187: $allpathcond.=
11188: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11189: }
11190: }
11191: $allpathcond=~s/\|$//;
11192: return &docondval($allpathcond);
11193: }
11194:
11195: #evaluates an expression of conditions
11196: sub docondval {
11197: my ($allpathcond) = @_;
11198: my $result=0;
11199: if ($env{'request.course.id'}
11200: && defined($allpathcond)) {
11201: my $operand='|';
11202: my @stack;
11203: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11204: if ($chunk eq '(') {
11205: push @stack,($operand,$result);
11206: } elsif ($chunk eq ')') {
11207: my $before=pop @stack;
11208: if (pop @stack eq '&') {
11209: $result=$result>$before?$before:$result;
11210: } else {
11211: $result=$result>$before?$result:$before;
11212: }
11213: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11214: $operand=$chunk;
11215: } else {
11216: my $new=directcondval($chunk);
11217: if ($operand eq '&') {
11218: $result=$result>$new?$new:$result;
11219: } else {
11220: $result=$result>$new?$result:$new;
11221: }
11222: }
11223: }
11224: }
11225: return $result;
11226: }
11227:
11228: # ---------------------------------------------------- Devalidate courseresdata
11229:
11230: sub devalidatecourseresdata {
11231: my ($coursenum,$coursedomain)=@_;
11232: my $hashid=$coursenum.':'.$coursedomain;
11233: &devalidate_cache_new('courseres',$hashid);
11234: }
11235:
11236:
11237: # --------------------------------------------------- Course Resourcedata Query
11238: #
11239: # Parameters:
11240: # $coursenum - Number of the course.
11241: # $coursedomain - Domain at which the course was created.
11242: # Returns:
11243: # A hash of the course parameters along (I think) with timestamps
11244: # and version info.
11245:
11246: sub get_courseresdata {
11247: my ($coursenum,$coursedomain)=@_;
11248: my $coursehom=&homeserver($coursenum,$coursedomain);
11249: my $hashid=$coursenum.':'.$coursedomain;
11250: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11251: my %dumpreply;
11252: unless (defined($cached)) {
11253: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11254: $result=\%dumpreply;
11255: my ($tmp) = keys(%dumpreply);
11256: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11257: &do_cache_new('courseres',$hashid,$result,600);
11258: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11259: return $tmp;
11260: } elsif ($tmp =~ /^(error)/) {
11261: $result=undef;
11262: &do_cache_new('courseres',$hashid,$result,600);
11263: }
11264: }
11265: return $result;
11266: }
11267:
11268: sub devalidateuserresdata {
11269: my ($uname,$udom)=@_;
11270: my $hashid="$udom:$uname";
11271: &devalidate_cache_new('userres',$hashid);
11272: }
11273:
11274: sub get_userresdata {
11275: my ($uname,$udom)=@_;
11276: #most student don\'t have any data set, check if there is some data
11277: if (&EXT_cache_status($udom,$uname)) { return undef; }
11278:
11279: my $hashid="$udom:$uname";
11280: my ($result,$cached)=&is_cached_new('userres',$hashid);
11281: if (!defined($cached)) {
11282: my %resourcedata=&dump('resourcedata',$udom,$uname);
11283: $result=\%resourcedata;
11284: &do_cache_new('userres',$hashid,$result,600);
11285: }
11286: my ($tmp)=keys(%$result);
11287: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11288: return $result;
11289: }
11290: #error 2 occurs when the .db doesn't exist
11291: if ($tmp!~/error: 2 /) {
11292: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11293: &logthis("<font color=\"blue\">WARNING:".
11294: " Trying to get resource data for ".
11295: $uname." at ".$udom.": ".
11296: $tmp."</font>");
11297: }
11298: } elsif ($tmp=~/error: 2 /) {
11299: #&EXT_cache_set($udom,$uname);
11300: &do_cache_new('userres',$hashid,undef,600);
11301: undef($tmp); # not really an error so don't send it back
11302: }
11303: return $tmp;
11304: }
11305: #----------------------------------------------- resdata - return resource data
11306: # Purpose:
11307: # Return resource data for either users or for a course.
11308: # Parameters:
11309: # $name - Course/user name.
11310: # $domain - Name of the domain the user/course is registered on.
11311: # $type - Type of thing $name is (must be 'course' or 'user')
11312: # $mapp - decluttered URL of enclosing map
11313: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11314: # $recurseup - Ref to array of map URLs, starting with map containing
11315: # $mapp up through hierarchy of nested maps to top level map.
11316: # $courseid - CourseID (first part of param identifier).
11317: # $modifier - Middle part of param identifier.
11318: # $what - Last part of param identifier.
11319: # @which - Array of names of resources desired.
11320: # Returns:
11321: # The value of the first reasource in @which that is found in the
11322: # resource hash.
11323: # Exceptional Conditions:
11324: # If the $type passed in is not valid (not the string 'course' or
11325: # 'user', an undefined reference is returned.
11326: # If none of the resources are found, an undef is returned
11327: sub resdata {
11328: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11329: $modifier,$what,@which)=@_;
11330: my $result;
11331: if ($type eq 'course') {
11332: $result=&get_courseresdata($name,$domain);
11333: } elsif ($type eq 'user') {
11334: $result=&get_userresdata($name,$domain);
11335: }
11336: if (!ref($result)) { return $result; }
11337: foreach my $item (@which) {
11338: if ($item->[1] eq 'course') {
11339: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11340: unless ($$recursed) {
11341: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11342: $$recursed = 1;
11343: }
11344: foreach my $item (@${recurseup}) {
11345: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11346: last if (defined($result->{$norecursechk}));
11347: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11348: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11349: }
11350: }
11351: }
11352: if (defined($result->{$item->[0]})) {
11353: return [$result->{$item->[0]},$item->[1]];
11354: }
11355: }
11356: return undef;
11357: }
11358:
11359: sub get_domain_lti {
11360: my ($cdom,$context) = @_;
11361: my ($name,%lti);
11362: if ($context eq 'consumer') {
11363: $name = 'ltitools';
11364: } elsif ($context eq 'provider') {
11365: $name = 'lti';
11366: } else {
11367: return %lti;
11368: }
11369: my ($result,$cached)=&is_cached_new($name,$cdom);
11370: if (defined($cached)) {
11371: if (ref($result) eq 'HASH') {
11372: %lti = %{$result};
11373: }
11374: } else {
11375: my %domconfig = &get_dom('configuration',[$name],$cdom);
11376: if (ref($domconfig{$name}) eq 'HASH') {
11377: %lti = %{$domconfig{$name}};
11378: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11379: if (ref($encdomconfig{$name}) eq 'HASH') {
11380: foreach my $id (keys(%lti)) {
11381: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11382: foreach my $item ('key','secret') {
11383: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11384: }
11385: }
11386: }
11387: }
11388: }
11389: my $cachetime = 24*60*60;
11390: &do_cache_new($name,$cdom,\%lti,$cachetime);
11391: }
11392: return %lti;
11393: }
11394:
11395: sub get_numsuppfiles {
11396: my ($cnum,$cdom,$ignorecache)=@_;
11397: my $hashid=$cnum.':'.$cdom;
11398: my ($suppcount,$cached);
11399: unless ($ignorecache) {
11400: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11401: }
11402: unless (defined($cached)) {
11403: my $chome=&homeserver($cnum,$cdom);
11404: unless ($chome eq 'no_host') {
11405: ($suppcount,my $supptools,my $errors) = (0,0,0);
11406: my $suppmap = 'supplemental.sequence';
11407: ($suppcount,$supptools,$errors) =
11408: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11409: $supptools,$errors);
11410: }
11411: &do_cache_new('suppcount',$hashid,$suppcount,600);
11412: }
11413: return $suppcount;
11414: }
11415:
11416: #
11417: # EXT resource caching routines
11418: #
11419:
11420: {
11421: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11422: #
11423: # The course for which we cache
11424: my $cachedmapkey='';
11425: # The cached recursive maps for this course
11426: my %cachedmaps=();
11427: # When this was last done
11428: my $cachedmaptime='';
11429:
11430: sub clear_EXT_cache_status {
11431: &delenv('cache.EXT.');
11432: }
11433:
11434: sub EXT_cache_status {
11435: my ($target_domain,$target_user) = @_;
11436: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11437: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11438: # We know already the user has no data
11439: return 1;
11440: } else {
11441: return 0;
11442: }
11443: }
11444:
11445: sub EXT_cache_set {
11446: my ($target_domain,$target_user) = @_;
11447: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11448: #&appenv({$cachename => time});
11449: }
11450:
11451: # --------------------------------------------------------- Value of a Variable
11452: sub EXT {
11453:
11454: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11455: unless ($varname) { return ''; }
11456: #get real user name/domain, courseid and symb
11457: my $courseid;
11458: my $publicuser;
11459: if ($symbparm) {
11460: $symbparm=&get_symb_from_alias($symbparm);
11461: }
11462: if (!($uname && $udom)) {
11463: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11464: if (!$symbparm) { $symbparm=$cursymb; }
11465: } else {
11466: $courseid=$env{'request.course.id'};
11467: }
11468: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11469: my $rest;
11470: if (defined($therest[0])) {
11471: $rest=join('.',@therest);
11472: } else {
11473: $rest='';
11474: }
11475:
11476: my $qualifierrest=$qualifier;
11477: if ($rest) { $qualifierrest.='.'.$rest; }
11478: my $spacequalifierrest=$space;
11479: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11480: if ($realm eq 'user') {
11481: # --------------------------------------------------------------- user.resource
11482: if ($space eq 'resource') {
11483: if ( (defined($Apache::lonhomework::parsing_a_problem)
11484: || defined($Apache::lonhomework::parsing_a_task))
11485: &&
11486: ($symbparm eq &symbread()) ) {
11487: # if we are in the middle of processing the resource the
11488: # get the value we are planning on committing
11489: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11490: return $Apache::lonhomework::results{$qualifierrest};
11491: } else {
11492: return $Apache::lonhomework::history{$qualifierrest};
11493: }
11494: } else {
11495: my %restored;
11496: if ($publicuser || $env{'request.state'} eq 'construct') {
11497: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11498: } else {
11499: %restored=&restore($symbparm,$courseid,$udom,$uname);
11500: }
11501: return $restored{$qualifierrest};
11502: }
11503: # ----------------------------------------------------------------- user.access
11504: } elsif ($space eq 'access') {
11505: # FIXME - not supporting calls for a specific user
11506: return &allowed($qualifier,$rest);
11507: # ------------------------------------------ user.preferences, user.environment
11508: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11509: if (($uname eq $env{'user.name'}) &&
11510: ($udom eq $env{'user.domain'})) {
11511: return $env{join('.',('environment',$qualifierrest))};
11512: } else {
11513: my %returnhash;
11514: if (!$publicuser) {
11515: %returnhash=&userenvironment($udom,$uname,
11516: $qualifierrest);
11517: }
11518: return $returnhash{$qualifierrest};
11519: }
11520: # ----------------------------------------------------------------- user.course
11521: } elsif ($space eq 'course') {
11522: # FIXME - not supporting calls for a specific user
11523: return $env{join('.',('request.course',$qualifier))};
11524: # ------------------------------------------------------------------- user.role
11525: } elsif ($space eq 'role') {
11526: # FIXME - not supporting calls for a specific user
11527: my ($role,$where)=split(/\./,$env{'request.role'});
11528: if ($qualifier eq 'value') {
11529: return $role;
11530: } elsif ($qualifier eq 'extent') {
11531: return $where;
11532: }
11533: # ----------------------------------------------------------------- user.domain
11534: } elsif ($space eq 'domain') {
11535: return $udom;
11536: # ------------------------------------------------------------------- user.name
11537: } elsif ($space eq 'name') {
11538: return $uname;
11539: # ---------------------------------------------------- Any other user namespace
11540: } else {
11541: my %reply;
11542: if (!$publicuser) {
11543: %reply=&get($space,[$qualifierrest],$udom,$uname);
11544: }
11545: return $reply{$qualifierrest};
11546: }
11547: } elsif ($realm eq 'query') {
11548: # ---------------------------------------------- pull stuff out of query string
11549: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11550: [$spacequalifierrest]);
11551: return $env{'form.'.$spacequalifierrest};
11552: } elsif ($realm eq 'request') {
11553: # ------------------------------------------------------------- request.browser
11554: if ($space eq 'browser') {
11555: return $env{'browser.'.$qualifier};
11556: # ------------------------------------------------------------ request.filename
11557: } else {
11558: return $env{'request.'.$spacequalifierrest};
11559: }
11560: } elsif ($realm eq 'course') {
11561: # ---------------------------------------------------------- course.description
11562: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11563: } elsif ($realm eq 'resource') {
11564:
11565: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11566: if (!$symbparm) { $symbparm=&symbread(); }
11567: }
11568:
11569: if ($qualifier eq '') {
11570: if ($space eq 'title') {
11571: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11572: return &gettitle($symbparm);
11573: }
11574:
11575: if ($space eq 'map') {
11576: my ($map) = &decode_symb($symbparm);
11577: return &symbread($map);
11578: }
11579: if ($space eq 'maptitle') {
11580: my ($map) = &decode_symb($symbparm);
11581: return &gettitle($map);
11582: }
11583: if ($space eq 'filename') {
11584: if ($symbparm) {
11585: return &clutter((&decode_symb($symbparm))[2]);
11586: }
11587: return &hreflocation('',$env{'request.filename'});
11588: }
11589:
11590: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11591: if ($space eq 'visibleparts') {
11592: my $navmap = Apache::lonnavmaps::navmap->new();
11593: my $item;
11594: if (ref($navmap)) {
11595: my $res = $navmap->getBySymb($symbparm);
11596: my $parts = $res->parts();
11597: if (ref($parts) eq 'ARRAY') {
11598: $item = join(',',@{$parts});
11599: }
11600: undef($navmap);
11601: }
11602: return $item;
11603: }
11604: }
11605: }
11606:
11607: my ($section, $group, @groups, @recurseup, $recursed);
11608: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11609: if (($courseid eq '') && ($cid)) {
11610: $courseid = $cid;
11611: }
11612: if (($symbparm && $courseid) &&
11613: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11614:
11615: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11616:
11617: # ----------------------------------------------------- Cascading lookup scheme
11618: my $symbp=$symbparm;
11619: $mapp=&deversion((&decode_symb($symbp))[0]);
11620: my $symbparm=$symbp.'.'.$spacequalifierrest;
11621: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11622: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11623: if (($env{'user.name'} eq $uname) &&
11624: ($env{'user.domain'} eq $udom)) {
11625: $section=$env{'request.course.sec'};
11626: @groups = split(/:/,$env{'request.course.groups'});
11627: @groups=&sort_course_groups($courseid,@groups);
11628: } else {
11629: if (! defined($usection)) {
11630: $section=&getsection($udom,$uname,$courseid);
11631: } else {
11632: $section = $usection;
11633: }
11634: @groups = &get_users_groups($udom,$uname,$courseid);
11635: }
11636:
11637: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11638: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11639: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11640: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11641:
11642: $courselevel=$courseid.'.'.$spacequalifierrest;
11643: my $courselevelr=$courseid.'.'.$symbparm;
11644: $courseleveli=$courseid.'.'.$recurseparm;
11645: $courselevelm=$courseid.'.'.$mapparm;
11646:
11647: # ----------------------------------------------------------- first, check user
11648:
11649: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11650: \@recurseup,$courseid,'.',$spacequalifierrest,
11651: ([$courselevelr,'resource'],
11652: [$courselevelm,'map' ],
11653: [$courseleveli,'map' ],
11654: [$courselevel, 'course' ]));
11655: if (defined($userreply)) { return &get_reply($userreply); }
11656:
11657: # ------------------------------------------------ second, check some of course
11658: my $coursereply;
11659: if (@groups > 0) {
11660: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11661: $recurseparm,$mapparm,$spacequalifierrest,
11662: $mapp,\$recursed,\@recurseup);
11663: if (defined($coursereply)) { return &get_reply($coursereply); }
11664: }
11665:
11666: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11667: $env{'course.'.$courseid.'.domain'},
11668: 'course',$mapp,\$recursed,\@recurseup,
11669: $courseid,'.['.$section.'].',$spacequalifierrest,
11670: ([$seclevelr, 'resource'],
11671: [$seclevelm, 'map' ],
11672: [$secleveli, 'map' ],
11673: [$seclevel, 'course' ],
11674: [$courselevelr,'resource']));
11675: if (defined($coursereply)) { return &get_reply($coursereply); }
11676:
11677: # ------------------------------------------------------ third, check map parms
11678: my %parmhash=();
11679: my $thisparm='';
11680: if (tie(%parmhash,'GDBM_File',
11681: $env{'request.course.fn'}.'_parms.db',
11682: &GDBM_READER(),0640)) {
11683: $thisparm=$parmhash{$symbparm};
11684: untie(%parmhash);
11685: }
11686: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11687: }
11688: # ------------------------------------------ fourth, look in resource metadata
11689:
11690: my $what = $spacequalifierrest;
11691: $what=~s/\./\_/;
11692: my $filename;
11693: if (!$symbparm) { $symbparm=&symbread(); }
11694: if ($symbparm) {
11695: $filename=(&decode_symb($symbparm))[2];
11696: } else {
11697: $filename=$env{'request.filename'};
11698: }
11699: my $toolsymb;
11700: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11701: $toolsymb = $symbparm;
11702: }
11703: my $metadata=&metadata($filename,$what,$toolsymb);
11704: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11705: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11706: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11707:
11708: # ----------------------------------------------- fifth, look in rest of course
11709: if ($symbparm && defined($courseid) &&
11710: $courseid eq $env{'request.course.id'}) {
11711: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11712: $env{'course.'.$courseid.'.domain'},
11713: 'course',$mapp,\$recursed,\@recurseup,
11714: $courseid,'.',$spacequalifierrest,
11715: ([$courselevelm,'map' ],
11716: [$courseleveli,'map' ],
11717: [$courselevel, 'course']));
11718: if (defined($coursereply)) { return &get_reply($coursereply); }
11719: }
11720: # ------------------------------------------------------------------ Cascade up
11721: unless ($space eq '0') {
11722: my @parts=split(/_/,$space);
11723: my $id=pop(@parts);
11724: my $part=join('_',@parts);
11725: if ($part eq '') { $part='0'; }
11726: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11727: $symbparm,$udom,$uname,$section,1);
11728: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11729: }
11730: if ($recurse) { return undef; }
11731: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11732: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11733: # ---------------------------------------------------- Any other user namespace
11734: } elsif ($realm eq 'environment') {
11735: # ----------------------------------------------------------------- environment
11736: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11737: return $env{'environment.'.$spacequalifierrest};
11738: } else {
11739: if ($uname eq 'anonymous' && $udom eq '') {
11740: return '';
11741: }
11742: my %returnhash=&userenvironment($udom,$uname,
11743: $spacequalifierrest);
11744: return $returnhash{$spacequalifierrest};
11745: }
11746: } elsif ($realm eq 'system') {
11747: # ----------------------------------------------------------------- system.time
11748: if ($space eq 'time') {
11749: return time;
11750: }
11751: } elsif ($realm eq 'server') {
11752: # ----------------------------------------------------------------- system.time
11753: if ($space eq 'name') {
11754: return $ENV{'SERVER_NAME'};
11755: }
11756: }
11757: return '';
11758: }
11759:
11760: sub get_reply {
11761: my ($reply_value) = @_;
11762: if (ref($reply_value) eq 'ARRAY') {
11763: if (wantarray) {
11764: return @$reply_value;
11765: }
11766: return $reply_value->[0];
11767: } else {
11768: return $reply_value;
11769: }
11770: }
11771:
11772: sub check_group_parms {
11773: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11774: $recursed,$recurseupref) = @_;
11775: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11776: [$what,'course']);
11777: my $coursereply;
11778: foreach my $group (@{$groups}) {
11779: my @groupitems = ();
11780: foreach my $level (@levels) {
11781: my $item = $courseid.'.['.$group.'].'.$level->[0];
11782: push(@groupitems,[$item,$level->[1]]);
11783: }
11784: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11785: $env{'course.'.$courseid.'.domain'},
11786: 'course',$mapp,$recursed,$recurseupref,
11787: $courseid,'.['.$group.'].',$what,
11788: @groupitems);
11789: last if (defined($coursereply));
11790: }
11791: return $coursereply;
11792: }
11793:
11794: sub get_map_hierarchy {
11795: my ($mapname,$courseid) = @_;
11796: my @recurseup = ();
11797: if ($mapname) {
11798: if (($cachedmapkey eq $courseid) &&
11799: (abs($cachedmaptime-time)<5)) {
11800: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11801: return @{$cachedmaps{$mapname}};
11802: }
11803: }
11804: my $navmap = Apache::lonnavmaps::navmap->new();
11805: if (ref($navmap)) {
11806: @recurseup = $navmap->recurseup_maps($mapname);
11807: undef($navmap);
11808: $cachedmaps{$mapname} = \@recurseup;
11809: $cachedmaptime=time;
11810: $cachedmapkey=$courseid;
11811: }
11812: }
11813: return @recurseup;
11814: }
11815:
11816: }
11817:
11818: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11819: my ($courseid,@groups) = @_;
11820: @groups = sort(@groups);
11821: return @groups;
11822: }
11823:
11824: sub packages_tab_default {
11825: my ($uri,$varname,$toolsymb)=@_;
11826: my (undef,$part,$name)=split(/\./,$varname);
11827:
11828: my (@extension,@specifics,$do_default);
11829: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11830: my ($pack_type,$pack_part)=split(/_/,$package,2);
11831: if ($pack_type eq 'default') {
11832: $do_default=1;
11833: } elsif ($pack_type eq 'extension') {
11834: push(@extension,[$package,$pack_type,$pack_part]);
11835: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11836: # only look at packages defaults for packages that this id is
11837: push(@specifics,[$package,$pack_type,$pack_part]);
11838: }
11839: }
11840: # first look for a package that matches the requested part id
11841: foreach my $package (@specifics) {
11842: my (undef,$pack_type,$pack_part)=@{$package};
11843: next if ($pack_part ne $part);
11844: if (defined($packagetab{"$pack_type&$name&default"})) {
11845: return $packagetab{"$pack_type&$name&default"};
11846: }
11847: }
11848: # look for any possible matching non extension_ package
11849: foreach my $package (@specifics) {
11850: my (undef,$pack_type,$pack_part)=@{$package};
11851: if (defined($packagetab{"$pack_type&$name&default"})) {
11852: return $packagetab{"$pack_type&$name&default"};
11853: }
11854: if ($pack_type eq 'part') { $pack_part='0'; }
11855: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11856: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11857: }
11858: }
11859: # look for any posible extension_ match
11860: foreach my $package (@extension) {
11861: my ($package,$pack_type)=@{$package};
11862: if (defined($packagetab{"$pack_type&$name&default"})) {
11863: return $packagetab{"$pack_type&$name&default"};
11864: }
11865: if (defined($packagetab{$package."&$name&default"})) {
11866: return $packagetab{$package."&$name&default"};
11867: }
11868: }
11869: # look for a global default setting
11870: if ($do_default && defined($packagetab{"default&$name&default"})) {
11871: return $packagetab{"default&$name&default"};
11872: }
11873: return undef;
11874: }
11875:
11876: sub add_prefix_and_part {
11877: my ($prefix,$part)=@_;
11878: my $keyroot;
11879: if (defined($prefix) && $prefix !~ /^__/) {
11880: # prefix that has a part already
11881: $keyroot=$prefix;
11882: } elsif (defined($prefix)) {
11883: # prefix that is missing a part
11884: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11885: } else {
11886: # no prefix at all
11887: if (defined($part)) { $keyroot='_'.$part; }
11888: }
11889: return $keyroot;
11890: }
11891:
11892: # ---------------------------------------------------------------- Get metadata
11893:
11894: my %metaentry;
11895: my %importedpartids;
11896: my %importedrespids;
11897: sub metadata {
11898: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11899: $uri=&declutter($uri);
11900: # if it is a non metadata possible uri return quickly
11901: if (($uri eq '') ||
11902: (($uri =~ m|^/*adm/|) &&
11903: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11904: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11905: return undef;
11906: }
11907: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11908: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11909: return undef;
11910: }
11911: my $filename=$uri;
11912: $uri=~s/\.meta$//;
11913: #
11914: # Is the metadata already cached?
11915: # Look at timestamp of caching
11916: # Everything is cached by the main uri, libraries are never directly cached
11917: #
11918: if (!defined($liburi)) {
11919: my ($result,$cached)=&is_cached_new('meta',$uri);
11920: if (defined($cached)) { return $result->{':'.$what}; }
11921: }
11922:
11923: #
11924: # If the uri is for an external tool the file from
11925: # which metadata should be retrieved depends on whether
11926: # the tool had been configured to be gradable (set in the Course
11927: # Editor or Resource Editor).
11928: #
11929: # If a valid symb has been included as the third arg in the call
11930: # to &metadata() that can be used to retrieve the value of
11931: # parameter_0_gradable set for the resource, and included in the
11932: # uploaded map containing the tool. The value is retrieved via
11933: # &EXT(), if a valid symb is available. Otherwise the value of
11934: # gradable in the exttool_$marker.db file for the tool instance
11935: # is retrieved via &get().
11936: #
11937: # When lonuserstate::traceroute() calls lonnet::EXT() for
11938: # hiddenresource and encrypturl (during course initialization)
11939: # the map-level parameter for resource.0.gradable included in the
11940: # uploaded map containing the tool will not yet have been stored
11941: # in the user_course_parms.db file for the user's session, so in
11942: # this case fall back to retrieving gradable status from the
11943: # exttool_$marker.db file.
11944: #
11945: # In order to avoid an infinite loop, &metadata() will return
11946: # before a call to &EXT(), if the uri is for an external tool
11947: # and the $what for which metadata is being requested is
11948: # parameter_0_gradable or 0_gradable.
11949: #
11950:
11951: if ($uri =~ /ext\.tool$/) {
11952: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11953: return;
11954: } else {
11955: my ($checked,$use_passback);
11956: if ($toolsymb ne '') {
11957: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11958: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11959: $checked = 1;
11960: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11961: $use_passback = 1;
11962: }
11963: }
11964: }
11965: unless ($checked) {
11966: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11967: $marker=~s/\D//g;
11968: if ($marker) {
11969: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11970: $use_passback = $toolsettings{'gradable'};
11971: }
11972: }
11973: if ($use_passback) {
11974: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11975: } else {
11976: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11977: }
11978: }
11979: }
11980:
11981: {
11982: # Imported parts would go here
11983: my @origfiletagids=();
11984: my $importedparts=0;
11985:
11986: # Imported responseids would go here
11987: my $importedresponses=0;
11988: #
11989: # Is this a recursive call for a library?
11990: #
11991: # if (! exists($metacache{$uri})) {
11992: # $metacache{$uri}={};
11993: # }
11994: my $cachetime = 60*60;
11995: if ($liburi) {
11996: $liburi=&declutter($liburi);
11997: $filename=$liburi;
11998: } else {
11999: &devalidate_cache_new('meta',$uri);
12000: undef(%metaentry);
12001: }
12002: my %metathesekeys=();
12003: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12004: my $metastring;
12005: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12006: my $which = &hreflocation('','/'.($liburi || $uri));
12007: $metastring =
12008: &Apache::lonnet::ssi_body($which,
12009: ('grade_target' => 'meta'));
12010: $cachetime = 1; # only want this cached in the child not long term
12011: } elsif (($uri !~ m -^(editupload)/-) &&
12012: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12013: my $file=&filelocation('',&clutter($filename));
12014: #push(@{$metaentry{$uri.'.file'}},$file);
12015: $metastring=&getfile($file);
12016: }
12017: my $parser=HTML::LCParser->new(\$metastring);
12018: my $token;
12019: undef %metathesekeys;
12020: while ($token=$parser->get_token) {
12021: if ($token->[0] eq 'S') {
12022: if (defined($token->[2]->{'package'})) {
12023: #
12024: # This is a package - get package info
12025: #
12026: my $package=$token->[2]->{'package'};
12027: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12028: if (defined($token->[2]->{'id'})) {
12029: $keyroot.='_'.$token->[2]->{'id'};
12030: }
12031: if ($metaentry{':packages'}) {
12032: $metaentry{':packages'}.=','.$package.$keyroot;
12033: } else {
12034: $metaentry{':packages'}=$package.$keyroot;
12035: }
12036: foreach my $pack_entry (keys(%packagetab)) {
12037: my $part=$keyroot;
12038: $part=~s/^\_//;
12039: if ($pack_entry=~/^\Q$package\E\&/ ||
12040: $pack_entry=~/^\Q$package\E_0\&/) {
12041: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12042: # ignore package.tab specified default values
12043: # here &package_tab_default() will fetch those
12044: if ($subp eq 'default') { next; }
12045: my $value=$packagetab{$pack_entry};
12046: my $unikey;
12047: if ($pack =~ /_0$/) {
12048: $unikey='parameter_0_'.$name;
12049: $part=0;
12050: } else {
12051: $unikey='parameter'.$keyroot.'_'.$name;
12052: }
12053: if ($subp eq 'display') {
12054: $value.=' [Part: '.$part.']';
12055: }
12056: $metaentry{':'.$unikey.'.part'}=$part;
12057: $metathesekeys{$unikey}=1;
12058: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12059: $metaentry{':'.$unikey.'.'.$subp}=$value;
12060: }
12061: if (defined($metaentry{':'.$unikey.'.default'})) {
12062: $metaentry{':'.$unikey}=
12063: $metaentry{':'.$unikey.'.default'};
12064: }
12065: }
12066: }
12067: } else {
12068: #
12069: # This is not a package - some other kind of start tag
12070: #
12071: my $entry=$token->[1];
12072: my $unikey='';
12073:
12074: if ($entry eq 'import') {
12075: #
12076: # Importing a library here
12077: #
12078: my $location=$parser->get_text('/import');
12079: my $dir=$filename;
12080: $dir=~s|[^/]*$||;
12081: $location=&filelocation($dir,$location);
12082:
12083: my $importid=$token->[2]->{'id'};
12084: my $importmode=$token->[2]->{'importmode'};
12085: #
12086: # Check metadata for imported file to
12087: # see if it contained response items
12088: #
12089: my ($origfile,@libfilekeys);
12090: my %currmetaentry = %metaentry;
12091: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12092: $depthcount+1));
12093: if (grep(/^responseorder$/,@libfilekeys)) {
12094: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12095: undef,$depthcount+1);
12096: if ($libresponseorder ne '') {
12097: if ($#origfiletagids<0) {
12098: undef(%importedrespids);
12099: undef(%importedpartids);
12100: }
12101: my @respids = split(/\s*,\s*/,$libresponseorder);
12102: if (@respids) {
12103: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12104: }
12105: if ($importedrespids{$importid} ne '') {
12106: $importedresponses = 1;
12107: # We need to get the original file and the imported file to get the response order correct
12108: # Load and inspect original file
12109: if ($#origfiletagids<0) {
12110: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12111: $origfile=&getfile($origfilelocation);
12112: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12113: }
12114: }
12115: }
12116: }
12117: # Do not overwrite contents of %metaentry hash for resource itself with
12118: # hash populated for imported library file
12119: %metaentry = %currmetaentry;
12120: undef(%currmetaentry);
12121: if ($importmode eq 'part') {
12122: # Import as part(s)
12123: $importedparts=1;
12124: # We need to get the original file and the imported file to get the part order correct
12125: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12126: # Load and inspect original file if we didn't do that already
12127: if ($#origfiletagids<0) {
12128: undef(%importedrespids);
12129: undef(%importedpartids);
12130: if ($origfile eq '') {
12131: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12132: $origfile=&getfile($origfilelocation);
12133: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12134: }
12135: }
12136: my @impfilepartids;
12137: # If <partorder> tag is included in metadata for the imported file
12138: # get the parts in the imported file from that.
12139: if (grep(/^partorder$/,@libfilekeys)) {
12140: %currmetaentry = %metaentry;
12141: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12142: $depthcount+1);
12143: %metaentry = %currmetaentry;
12144: undef(%currmetaentry);
12145: if ($libpartorder ne '') {
12146: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12147: }
12148: } else {
12149: # If no <partorder> tag available, load and inspect imported file
12150: my $impfile=&getfile($location);
12151: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12152: }
12153: if ($#impfilepartids>=0) {
12154: # This problem had parts
12155: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12156: } else {
12157: # Importing by turning a single problem into a problem part
12158: # It gets the import-tags ID as part-ID
12159: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12160: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12161: }
12162: } else {
12163: # Import as problem or as normal import
12164: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12165: unless ($importmode eq 'problem') {
12166: # Normal import
12167: if (defined($token->[2]->{'id'})) {
12168: $unikey.='_'.$token->[2]->{'id'};
12169: }
12170: }
12171: # Check metadata for imported file to
12172: # see if it contained parts
12173: if (grep(/^partorder$/,@libfilekeys)) {
12174: %currmetaentry = %metaentry;
12175: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12176: $depthcount+1);
12177: %metaentry = %currmetaentry;
12178: undef(%currmetaentry);
12179: if ($libpartorder ne '') {
12180: $importedparts = 1;
12181: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12182: }
12183: }
12184: }
12185: if ($depthcount<20) {
12186: my $metadata =
12187: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12188: $depthcount+1);
12189: foreach my $meta (split(',',$metadata)) {
12190: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12191: $metathesekeys{$meta}=1;
12192: }
12193: }
12194: } else {
12195: #
12196: # Not importing, some other kind of non-package, non-library start tag
12197: #
12198: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12199: if (defined($token->[2]->{'id'})) {
12200: $unikey.='_'.$token->[2]->{'id'};
12201: }
12202: if (defined($token->[2]->{'name'})) {
12203: $unikey.='_'.$token->[2]->{'name'};
12204: }
12205: $metathesekeys{$unikey}=1;
12206: foreach my $param (@{$token->[3]}) {
12207: $metaentry{':'.$unikey.'.'.$param} =
12208: $token->[2]->{$param};
12209: }
12210: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12211: my $default=$metaentry{':'.$unikey.'.default'};
12212: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12213: # only ws inside the tag, and not in default, so use default
12214: # as value
12215: $metaentry{':'.$unikey}=$default;
12216: } elsif ( $internaltext =~ /\S/ ) {
12217: # something interesting inside the tag
12218: $metaentry{':'.$unikey}=$internaltext;
12219: } else {
12220: # no interesting values, don't set a default
12221: }
12222: # end of not-a-package not-a-library import
12223: }
12224: # end of not-a-package start tag
12225: }
12226: # the next is the end of "start tag"
12227: }
12228: }
12229: my ($extension) = ($uri =~ /\.(\w+)$/);
12230: $extension = lc($extension);
12231: if ($extension eq 'htm') { $extension='html'; }
12232:
12233: foreach my $key (keys(%packagetab)) {
12234: #no specific packages #how's our extension
12235: if ($key!~/^extension_\Q$extension\E&/) { next; }
12236: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12237: \%metathesekeys);
12238: }
12239:
12240: if (!exists($metaentry{':packages'})
12241: || $packagetab{"import_defaults&extension_$extension"}) {
12242: foreach my $key (keys(%packagetab)) {
12243: #no specific packages well let's get default then
12244: if ($key!~/^default&/) { next; }
12245: &metadata_create_package_def($uri,$key,'default',
12246: \%metathesekeys);
12247: }
12248: }
12249: # are there custom rights to evaluate
12250: if ($metaentry{':copyright'} eq 'custom') {
12251:
12252: #
12253: # Importing a rights file here
12254: #
12255: unless ($depthcount) {
12256: my $location=$metaentry{':customdistributionfile'};
12257: my $dir=$filename;
12258: $dir=~s|[^/]*$||;
12259: $location=&filelocation($dir,$location);
12260: my $rights_metadata =
12261: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12262: $depthcount+1);
12263: foreach my $rights (split(',',$rights_metadata)) {
12264: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12265: $metathesekeys{$rights}=1;
12266: }
12267: }
12268: }
12269: # uniqifiy package listing
12270: my %seen;
12271: my @uniq_packages =
12272: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12273: $metaentry{':packages'} = join(',',@uniq_packages);
12274:
12275: if (($importedresponses) || ($importedparts)) {
12276: if ($importedparts) {
12277: # We had imported parts and need to rebuild partorder
12278: $metaentry{':partorder'}='';
12279: $metathesekeys{'partorder'}=1;
12280: }
12281: if ($importedresponses) {
12282: # We had imported responses and need to rebuil responseorder
12283: $metaentry{':responseorder'}='';
12284: $metathesekeys{'responseorder'}=1;
12285: }
12286: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12287: my $origid = $origfiletagids[$index+1];
12288: if ($origfiletagids[$index] eq 'part') {
12289: # Original part, part of the problem
12290: if ($importedparts) {
12291: $metaentry{':partorder'}.=','.$origid;
12292: }
12293: } elsif ($origfiletagids[$index] eq 'import') {
12294: if ($importedparts) {
12295: # We have imported parts at this position
12296: if ($importedpartids{$origid} ne '') {
12297: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12298: }
12299: }
12300: if ($importedresponses) {
12301: # We have imported responses at this position
12302: if ($importedrespids{$origid} ne '') {
12303: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12304: }
12305: }
12306: } else {
12307: # Original response item, part of the problem
12308: if ($importedresponses) {
12309: $metaentry{':responseorder'}.=','.$origid;
12310: }
12311: }
12312: }
12313: if ($importedparts) {
12314: $metaentry{':partorder'}=~s/^\,//;
12315: }
12316: if ($importedresponses) {
12317: $metaentry{':responseorder'}=~s/^\,//;
12318: }
12319: }
12320: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12321: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12322: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12323: unless ($liburi) {
12324: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12325: }
12326: # this is the end of "was not already recently cached
12327: }
12328: return $metaentry{':'.$what};
12329: }
12330:
12331: sub metadata_create_package_def {
12332: my ($uri,$key,$package,$metathesekeys)=@_;
12333: my ($pack,$name,$subp)=split(/\&/,$key);
12334: if ($subp eq 'default') { next; }
12335:
12336: if (defined($metaentry{':packages'})) {
12337: $metaentry{':packages'}.=','.$package;
12338: } else {
12339: $metaentry{':packages'}=$package;
12340: }
12341: my $value=$packagetab{$key};
12342: my $unikey;
12343: $unikey='parameter_0_'.$name;
12344: $metaentry{':'.$unikey.'.part'}=0;
12345: $$metathesekeys{$unikey}=1;
12346: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12347: $metaentry{':'.$unikey.'.'.$subp}=$value;
12348: }
12349: if (defined($metaentry{':'.$unikey.'.default'})) {
12350: $metaentry{':'.$unikey}=
12351: $metaentry{':'.$unikey.'.default'};
12352: }
12353: }
12354:
12355: sub metadata_generate_part0 {
12356: my ($metadata,$metacache,$uri) = @_;
12357: my %allnames;
12358: foreach my $metakey (keys(%$metadata)) {
12359: if ($metakey=~/^parameter\_(.*)/) {
12360: my $part=$$metacache{':'.$metakey.'.part'};
12361: my $name=$$metacache{':'.$metakey.'.name'};
12362: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12363: $allnames{$name}=$part;
12364: }
12365: }
12366: }
12367: foreach my $name (keys(%allnames)) {
12368: $$metadata{"parameter_0_$name"}=1;
12369: my $key=":parameter_0_$name";
12370: $$metacache{"$key.part"}='0';
12371: $$metacache{"$key.name"}=$name;
12372: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12373: $allnames{$name}.'_'.$name.
12374: '.type'};
12375: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12376: '.display'};
12377: my $expr='[Part: '.$allnames{$name}.']';
12378: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12379: $$metacache{"$key.display"}=$olddis;
12380: }
12381: }
12382:
12383: # ------------------------------------------------------ Devalidate title cache
12384:
12385: sub devalidate_title_cache {
12386: my ($url)=@_;
12387: if (!$env{'request.course.id'}) { return; }
12388: my $symb=&symbread($url);
12389: if (!$symb) { return; }
12390: my $key=$env{'request.course.id'}."\0".$symb;
12391: &devalidate_cache_new('title',$key);
12392: }
12393:
12394: # ------------------------------------------------- Get the title of a course
12395:
12396: sub current_course_title {
12397: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12398: }
12399: # ------------------------------------------------- Get the title of a resource
12400:
12401: sub gettitle {
12402: my $urlsymb=shift;
12403: my $symb=&symbread($urlsymb);
12404: if ($symb) {
12405: my $key=$env{'request.course.id'}."\0".$symb;
12406: my ($result,$cached)=&is_cached_new('title',$key);
12407: if (defined($cached)) {
12408: return $result;
12409: }
12410: my ($map,$resid,$url)=&decode_symb($symb);
12411: my $title='';
12412: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12413: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12414: } else {
12415: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12416: &GDBM_READER(),0640)) {
12417: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12418: $title=$bighash{'title_'.$mapid.'.'.$resid};
12419: untie(%bighash);
12420: }
12421: }
12422: $title=~s/\&colon\;/\:/gs;
12423: if ($title) {
12424: # Remember both $symb and $title for dynamic metadata
12425: $accesshash{$symb.'___crstitle'}=$title;
12426: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12427: # Cache this title and then return it
12428: return &do_cache_new('title',$key,$title,600);
12429: }
12430: $urlsymb=$url;
12431: }
12432: my $title=&metadata($urlsymb,'title');
12433: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12434: return $title;
12435: }
12436:
12437: sub get_slot {
12438: my ($which,$cnum,$cdom)=@_;
12439: if (!$cnum || !$cdom) {
12440: (undef,my $courseid)=&whichuser();
12441: $cdom=$env{'course.'.$courseid.'.domain'};
12442: $cnum=$env{'course.'.$courseid.'.num'};
12443: }
12444: my $key=join("\0",'slots',$cdom,$cnum,$which);
12445: my %slotinfo;
12446: if (exists($remembered{$key})) {
12447: $slotinfo{$which} = $remembered{$key};
12448: } else {
12449: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12450: &Apache::lonhomework::showhash(%slotinfo);
12451: my ($tmp)=keys(%slotinfo);
12452: if ($tmp=~/^error:/) { return (); }
12453: $remembered{$key} = $slotinfo{$which};
12454: }
12455: if (ref($slotinfo{$which}) eq 'HASH') {
12456: return %{$slotinfo{$which}};
12457: }
12458: return $slotinfo{$which};
12459: }
12460:
12461: sub get_reservable_slots {
12462: my ($cnum,$cdom,$uname,$udom) = @_;
12463: my $now = time;
12464: my $reservable_info;
12465: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12466: if (exists($remembered{$key})) {
12467: $reservable_info = $remembered{$key};
12468: } else {
12469: my %resv;
12470: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12471: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12472: $reservable_info = \%resv;
12473: $remembered{$key} = $reservable_info;
12474: }
12475: return $reservable_info;
12476: }
12477:
12478: sub get_course_slots {
12479: my ($cnum,$cdom) = @_;
12480: my $hashid=$cnum.':'.$cdom;
12481: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12482: if (defined($cached)) {
12483: if (ref($result) eq 'HASH') {
12484: return %{$result};
12485: }
12486: } else {
12487: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12488: my ($tmp) = keys(%slots);
12489: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12490: &do_cache_new('allslots',$hashid,\%slots,600);
12491: return %slots;
12492: }
12493: }
12494: return;
12495: }
12496:
12497: sub devalidate_slots_cache {
12498: my ($cnum,$cdom)=@_;
12499: my $hashid=$cnum.':'.$cdom;
12500: &devalidate_cache_new('allslots',$hashid);
12501: }
12502:
12503: sub get_coursechange {
12504: my ($cdom,$cnum) = @_;
12505: if ($cdom eq '' || $cnum eq '') {
12506: return unless ($env{'request.course.id'});
12507: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12508: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12509: }
12510: my $hashid=$cdom.'_'.$cnum;
12511: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12512: if ((defined($cached)) && ($change ne '')) {
12513: return $change;
12514: } else {
12515: my %crshash;
12516: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12517: if ($crshash{'internal.contentchange'} eq '') {
12518: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12519: if ($change eq '') {
12520: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12521: $change = $crshash{'internal.created'};
12522: }
12523: } else {
12524: $change = $crshash{'internal.contentchange'};
12525: }
12526: my $cachetime = 600;
12527: &do_cache_new('crschange',$hashid,$change,$cachetime);
12528: }
12529: return $change;
12530: }
12531:
12532: sub devalidate_coursechange_cache {
12533: my ($cnum,$cdom)=@_;
12534: my $hashid=$cnum.':'.$cdom;
12535: &devalidate_cache_new('crschange',$hashid);
12536: }
12537:
12538: # ------------------------------------------------- Update symbolic store links
12539:
12540: sub symblist {
12541: my ($mapname,%newhash)=@_;
12542: $mapname=&deversion(&declutter($mapname));
12543: my %hash;
12544: if (($env{'request.course.fn'}) && (%newhash)) {
12545: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12546: &GDBM_WRCREAT(),0640)) {
12547: foreach my $url (keys(%newhash)) {
12548: next if ($url eq 'last_known'
12549: && $env{'form.no_update_last_known'});
12550: $hash{declutter($url)}=&encode_symb($mapname,
12551: $newhash{$url}->[1],
12552: $newhash{$url}->[0]);
12553: }
12554: if (untie(%hash)) {
12555: return 'ok';
12556: }
12557: }
12558: }
12559: return 'error';
12560: }
12561:
12562: # --------------------------------------------------------------- Verify a symb
12563:
12564: sub symbverify {
12565: my ($symb,$thisurl,$encstate)=@_;
12566: my $thisfn=$thisurl;
12567: $thisfn=&declutter($thisfn);
12568: # direct jump to resource in page or to a sequence - will construct own symbs
12569: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12570: # check URL part
12571: my ($map,$resid,$url)=&decode_symb($symb);
12572:
12573: unless ($url eq $thisfn) { return 0; }
12574:
12575: $symb=&symbclean($symb);
12576: $thisurl=&deversion($thisurl);
12577: $thisfn=&deversion($thisfn);
12578:
12579: my %bighash;
12580: my $okay=0;
12581:
12582: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12583: &GDBM_READER(),0640)) {
12584: my $noclutter;
12585: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12586: $thisurl =~ s/\?.+$//;
12587: if ($map =~ m{^uploaded/.+\.page$}) {
12588: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12589: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12590: $noclutter = 1;
12591: }
12592: }
12593: my $ids;
12594: if ($noclutter) {
12595: $ids=$bighash{'ids_'.$thisurl};
12596: } else {
12597: $ids=$bighash{'ids_'.&clutter($thisurl)};
12598: }
12599: unless ($ids) {
12600: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12601: $ids=$bighash{$idkey};
12602: }
12603: if ($ids) {
12604: # ------------------------------------------------------------------- Has ID(s)
12605: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12606: $symb =~ s/\?.+$//;
12607: }
12608: foreach my $id (split(/\,/,$ids)) {
12609: my ($mapid,$resid)=split(/\./,$id);
12610: if (
12611: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12612: eq $symb) {
12613: if (ref($encstate)) {
12614: $$encstate = $bighash{'encrypted_'.$id};
12615: }
12616: if (($env{'request.role.adv'}) ||
12617: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12618: ($thisurl eq '/adm/navmaps')) {
12619: $okay=1;
12620: last;
12621: }
12622: }
12623: }
12624: }
12625: untie(%bighash);
12626: }
12627: return $okay;
12628: }
12629:
12630: # --------------------------------------------------------------- Clean-up symb
12631:
12632: sub symbclean {
12633: my $symb=shift;
12634: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12635: # remove version from map
12636: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12637:
12638: # remove version from URL
12639: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12640:
12641: # remove wrapper
12642:
12643: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12644: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12645: return $symb;
12646: }
12647:
12648: # ---------------------------------------------- Split symb to find map and url
12649:
12650: sub encode_symb {
12651: my ($map,$resid,$url)=@_;
12652: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12653: }
12654:
12655: sub decode_symb {
12656: my $symb=shift;
12657: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12658: my ($map,$resid,$url)=split(/___/,$symb);
12659: return (&fixversion($map),$resid,&fixversion($url));
12660: }
12661:
12662: sub fixversion {
12663: my $fn=shift;
12664: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12665: my %bighash;
12666: my $uri=&clutter($fn);
12667: my $key=$env{'request.course.id'}.'_'.$uri;
12668: # is this cached?
12669: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12670: if (defined($cached)) { return $result; }
12671: # unfortunately not cached, or expired
12672: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12673: &GDBM_READER(),0640)) {
12674: if ($bighash{'version_'.$uri}) {
12675: my $version=$bighash{'version_'.$uri};
12676: unless (($version eq 'mostrecent') ||
12677: ($version==&getversion($uri))) {
12678: $uri=~s/\.(\w+)$/\.$version\.$1/;
12679: }
12680: }
12681: untie %bighash;
12682: }
12683: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12684: }
12685:
12686: sub deversion {
12687: my $url=shift;
12688: $url=~s/\.\d+\.(\w+)$/\.$1/;
12689: return $url;
12690: }
12691:
12692: # ------------------------------------------------------ Return symb list entry
12693:
12694: sub symbread {
12695: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12696: my $cache_str='request.symbread.cached.'.$thisfn;
12697: if (defined($env{$cache_str})) {
12698: if ($ignorecachednull) {
12699: return $env{$cache_str} unless ($env{$cache_str} eq '');
12700: } else {
12701: return $env{$cache_str};
12702: }
12703: }
12704: # no filename provided? try from environment
12705: unless ($thisfn) {
12706: if ($env{'request.symb'}) {
12707: return $env{$cache_str}=&symbclean($env{'request.symb'});
12708: }
12709: $thisfn=$env{'request.filename'};
12710: }
12711: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12712: # is that filename actually a symb? Verify, clean, and return
12713: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12714: if (&symbverify($thisfn,$1)) {
12715: return $env{$cache_str}=&symbclean($thisfn);
12716: }
12717: }
12718: $thisfn=declutter($thisfn);
12719: my %hash;
12720: my %bighash;
12721: my $syval='';
12722: if (($env{'request.course.fn'}) && ($thisfn)) {
12723: my $targetfn = $thisfn;
12724: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12725: $targetfn = 'adm/wrapper/'.$thisfn;
12726: }
12727: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12728: $targetfn=$1;
12729: }
12730: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12731: &GDBM_READER(),0640)) {
12732: $syval=$hash{$targetfn};
12733: untie(%hash);
12734: }
12735: # ---------------------------------------------------------- There was an entry
12736: if ($syval) {
12737: #unless ($syval=~/\_\d+$/) {
12738: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12739: #&appenv({'request.ambiguous' => $thisfn});
12740: #return $env{$cache_str}='';
12741: #}
12742: #$syval.=$1;
12743: #}
12744: } else {
12745: # ------------------------------------------------------- Was not in symb table
12746: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12747: &GDBM_READER(),0640)) {
12748: # ---------------------------------------------- Get ID(s) for current resource
12749: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12750: unless ($ids) {
12751: $ids=$bighash{'ids_/'.$thisfn};
12752: }
12753: unless ($ids) {
12754: # alias?
12755: $ids=$bighash{'mapalias_'.$thisfn};
12756: }
12757: if ($ids) {
12758: # ------------------------------------------------------------------- Has ID(s)
12759: my @possibilities=split(/\,/,$ids);
12760: if ($#possibilities==0) {
12761: # ----------------------------------------------- There is only one possibility
12762: my ($mapid,$resid)=split(/\./,$ids);
12763: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12764: $resid,$thisfn);
12765: if (ref($possibles) eq 'HASH') {
12766: $possibles->{$syval} = 1;
12767: }
12768: if ($checkforblock) {
12769: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12770: if (@blockers) {
12771: $syval = '';
12772: return;
12773: }
12774: }
12775: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12776: # ------------------------------------------ There is more than one possibility
12777: my $realpossible=0;
12778: foreach my $id (@possibilities) {
12779: my $file=$bighash{'src_'.$id};
12780: my $canaccess;
12781: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12782: $canaccess = 1;
12783: } else {
12784: $canaccess = &allowed('bre',$file);
12785: }
12786: if ($canaccess) {
12787: my ($mapid,$resid)=split(/\./,$id);
12788: if ($bighash{'map_type_'.$mapid} ne 'page') {
12789: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12790: $resid,$thisfn);
12791: if (ref($possibles) eq 'HASH') {
12792: $possibles->{$syval} = 1;
12793: }
12794: if ($checkforblock) {
12795: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12796: unless (@blockers > 0) {
12797: $syval = $poss_syval;
12798: $realpossible++;
12799: }
12800: } else {
12801: $syval = $poss_syval;
12802: $realpossible++;
12803: }
12804: }
12805: }
12806: }
12807: if ($realpossible!=1) { $syval=''; }
12808: } else {
12809: $syval='';
12810: }
12811: }
12812: untie(%bighash);
12813: }
12814: }
12815: if ($syval) {
12816: return $env{$cache_str}=$syval;
12817: }
12818: }
12819: &appenv({'request.ambiguous' => $thisfn});
12820: return $env{$cache_str}='';
12821: }
12822:
12823: # ---------------------------------------------------------- Return random seed
12824:
12825: sub numval {
12826: my $txt=shift;
12827: $txt=~tr/A-J/0-9/;
12828: $txt=~tr/a-j/0-9/;
12829: $txt=~tr/K-T/0-9/;
12830: $txt=~tr/k-t/0-9/;
12831: $txt=~tr/U-Z/0-5/;
12832: $txt=~tr/u-z/0-5/;
12833: $txt=~s/\D//g;
12834: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12835: return int($txt);
12836: }
12837:
12838: sub numval2 {
12839: my $txt=shift;
12840: $txt=~tr/A-J/0-9/;
12841: $txt=~tr/a-j/0-9/;
12842: $txt=~tr/K-T/0-9/;
12843: $txt=~tr/k-t/0-9/;
12844: $txt=~tr/U-Z/0-5/;
12845: $txt=~tr/u-z/0-5/;
12846: $txt=~s/\D//g;
12847: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12848: my $total;
12849: foreach my $val (@txts) { $total+=$val; }
12850: if ($_64bit) { if ($total > 2**32) { return -1; } }
12851: return int($total);
12852: }
12853:
12854: sub numval3 {
12855: use integer;
12856: my $txt=shift;
12857: $txt=~tr/A-J/0-9/;
12858: $txt=~tr/a-j/0-9/;
12859: $txt=~tr/K-T/0-9/;
12860: $txt=~tr/k-t/0-9/;
12861: $txt=~tr/U-Z/0-5/;
12862: $txt=~tr/u-z/0-5/;
12863: $txt=~s/\D//g;
12864: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12865: my $total;
12866: foreach my $val (@txts) { $total+=$val; }
12867: if ($_64bit) { $total=(($total<<32)>>32); }
12868: return $total;
12869: }
12870:
12871: sub digest {
12872: my ($data)=@_;
12873: my $digest=&Digest::MD5::md5($data);
12874: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12875: my ($e,$f);
12876: {
12877: use integer;
12878: $e=($a+$b);
12879: $f=($c+$d);
12880: if ($_64bit) {
12881: $e=(($e<<32)>>32);
12882: $f=(($f<<32)>>32);
12883: }
12884: }
12885: if (wantarray) {
12886: return ($e,$f);
12887: } else {
12888: my $g;
12889: {
12890: use integer;
12891: $g=($e+$f);
12892: if ($_64bit) {
12893: $g=(($g<<32)>>32);
12894: }
12895: }
12896: return $g;
12897: }
12898: }
12899:
12900: sub latest_rnd_algorithm_id {
12901: return '64bit5';
12902: }
12903:
12904: sub get_rand_alg {
12905: my ($courseid)=@_;
12906: if (!$courseid) { $courseid=(&whichuser())[1]; }
12907: if ($courseid) {
12908: return $env{"course.$courseid.rndseed"};
12909: }
12910: return &latest_rnd_algorithm_id();
12911: }
12912:
12913: sub validCODE {
12914: my ($CODE)=@_;
12915: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12916: return 0;
12917: }
12918:
12919: sub getCODE {
12920: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12921: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12922: defined($Apache::lonhomework::parsing_a_task) ) &&
12923: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12924: return $Apache::lonhomework::history{'resource.CODE'};
12925: }
12926: return undef;
12927: }
12928: #
12929: # Determines the random seed for a specific context:
12930: #
12931: # parameters:
12932: # symb - in course context the symb for the seed.
12933: # course_id - The course id of the form domain_coursenum.
12934: # domain - Domain for the user.
12935: # course - Course for the user.
12936: # cenv - environment of the course.
12937: #
12938: # NOTE:
12939: # All parameters are picked out of the environment if missing
12940: # or not defined.
12941: # If a symb cannot be determined the current time is used instead.
12942: #
12943: # For a given well defined symb, courside, domain, username,
12944: # and course environment, the seed is reproducible.
12945: #
12946: sub rndseed {
12947: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12948: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12949: if (!defined($symb)) {
12950: unless ($symb=$wsymb) { return time; }
12951: }
12952: if (!defined $courseid) {
12953: $courseid=$wcourseid;
12954: }
12955: if (!defined $domain) { $domain=$wdomain; }
12956: if (!defined $username) { $username=$wusername }
12957:
12958: my $which;
12959: if (defined($cenv->{'rndseed'})) {
12960: $which = $cenv->{'rndseed'};
12961: } else {
12962: $which =&get_rand_alg($courseid);
12963: }
12964: if (defined(&getCODE())) {
12965:
12966: if ($which eq '64bit5') {
12967: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12968: } elsif ($which eq '64bit4') {
12969: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12970: } else {
12971: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12972: }
12973: } elsif ($which eq '64bit5') {
12974: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12975: } elsif ($which eq '64bit4') {
12976: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12977: } elsif ($which eq '64bit3') {
12978: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12979: } elsif ($which eq '64bit2') {
12980: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12981: } elsif ($which eq '64bit') {
12982: return &rndseed_64bit($symb,$courseid,$domain,$username);
12983: }
12984: return &rndseed_32bit($symb,$courseid,$domain,$username);
12985: }
12986:
12987: sub rndseed_32bit {
12988: my ($symb,$courseid,$domain,$username)=@_;
12989: {
12990: use integer;
12991: my $symbchck=unpack("%32C*",$symb) << 27;
12992: my $symbseed=numval($symb) << 22;
12993: my $namechck=unpack("%32C*",$username) << 17;
12994: my $nameseed=numval($username) << 12;
12995: my $domainseed=unpack("%32C*",$domain) << 7;
12996: my $courseseed=unpack("%32C*",$courseid);
12997: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12998: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12999: #&logthis("rndseed :$num:$symb");
13000: if ($_64bit) { $num=(($num<<32)>>32); }
13001: return $num;
13002: }
13003: }
13004:
13005: sub rndseed_64bit {
13006: my ($symb,$courseid,$domain,$username)=@_;
13007: {
13008: use integer;
13009: my $symbchck=unpack("%32S*",$symb) << 21;
13010: my $symbseed=numval($symb) << 10;
13011: my $namechck=unpack("%32S*",$username);
13012:
13013: my $nameseed=numval($username) << 21;
13014: my $domainseed=unpack("%32S*",$domain) << 10;
13015: my $courseseed=unpack("%32S*",$courseid);
13016:
13017: my $num1=$symbchck+$symbseed+$namechck;
13018: my $num2=$nameseed+$domainseed+$courseseed;
13019: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13020: #&logthis("rndseed :$num:$symb");
13021: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13022: return "$num1,$num2";
13023: }
13024: }
13025:
13026: sub rndseed_64bit2 {
13027: my ($symb,$courseid,$domain,$username)=@_;
13028: {
13029: use integer;
13030: # strings need to be an even # of cahracters long, it it is odd the
13031: # last characters gets thrown away
13032: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13033: my $symbseed=numval($symb) << 10;
13034: my $namechck=unpack("%32S*",$username.' ');
13035:
13036: my $nameseed=numval($username) << 21;
13037: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13038: my $courseseed=unpack("%32S*",$courseid.' ');
13039:
13040: my $num1=$symbchck+$symbseed+$namechck;
13041: my $num2=$nameseed+$domainseed+$courseseed;
13042: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13043: #&logthis("rndseed :$num:$symb");
13044: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13045: return "$num1,$num2";
13046: }
13047: }
13048:
13049: sub rndseed_64bit3 {
13050: my ($symb,$courseid,$domain,$username)=@_;
13051: {
13052: use integer;
13053: # strings need to be an even # of cahracters long, it it is odd the
13054: # last characters gets thrown away
13055: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13056: my $symbseed=numval2($symb) << 10;
13057: my $namechck=unpack("%32S*",$username.' ');
13058:
13059: my $nameseed=numval2($username) << 21;
13060: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13061: my $courseseed=unpack("%32S*",$courseid.' ');
13062:
13063: my $num1=$symbchck+$symbseed+$namechck;
13064: my $num2=$nameseed+$domainseed+$courseseed;
13065: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13066: #&logthis("rndseed :$num1:$num2:$_64bit");
13067: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13068:
13069: return "$num1:$num2";
13070: }
13071: }
13072:
13073: sub rndseed_64bit4 {
13074: my ($symb,$courseid,$domain,$username)=@_;
13075: {
13076: use integer;
13077: # strings need to be an even # of cahracters long, it it is odd the
13078: # last characters gets thrown away
13079: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13080: my $symbseed=numval3($symb) << 10;
13081: my $namechck=unpack("%32S*",$username.' ');
13082:
13083: my $nameseed=numval3($username) << 21;
13084: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13085: my $courseseed=unpack("%32S*",$courseid.' ');
13086:
13087: my $num1=$symbchck+$symbseed+$namechck;
13088: my $num2=$nameseed+$domainseed+$courseseed;
13089: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13090: #&logthis("rndseed :$num1:$num2:$_64bit");
13091: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13092:
13093: return "$num1:$num2";
13094: }
13095: }
13096:
13097: sub rndseed_64bit5 {
13098: my ($symb,$courseid,$domain,$username)=@_;
13099: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13100: return "$num1:$num2";
13101: }
13102:
13103: sub rndseed_CODE_64bit {
13104: my ($symb,$courseid,$domain,$username)=@_;
13105: {
13106: use integer;
13107: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13108: my $symbseed=numval2($symb);
13109: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13110: my $CODEseed=numval(&getCODE());
13111: my $courseseed=unpack("%32S*",$courseid.' ');
13112: my $num1=$symbseed+$CODEchck;
13113: my $num2=$CODEseed+$courseseed+$symbchck;
13114: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13115: #&logthis("rndseed :$num1:$num2:$symb");
13116: if ($_64bit) { $num1=(($num1<<32)>>32); }
13117: if ($_64bit) { $num2=(($num2<<32)>>32); }
13118: return "$num1:$num2";
13119: }
13120: }
13121:
13122: sub rndseed_CODE_64bit4 {
13123: my ($symb,$courseid,$domain,$username)=@_;
13124: {
13125: use integer;
13126: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13127: my $symbseed=numval3($symb);
13128: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13129: my $CODEseed=numval3(&getCODE());
13130: my $courseseed=unpack("%32S*",$courseid.' ');
13131: my $num1=$symbseed+$CODEchck;
13132: my $num2=$CODEseed+$courseseed+$symbchck;
13133: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13134: #&logthis("rndseed :$num1:$num2:$symb");
13135: if ($_64bit) { $num1=(($num1<<32)>>32); }
13136: if ($_64bit) { $num2=(($num2<<32)>>32); }
13137: return "$num1:$num2";
13138: }
13139: }
13140:
13141: sub rndseed_CODE_64bit5 {
13142: my ($symb,$courseid,$domain,$username)=@_;
13143: my $code = &getCODE();
13144: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13145: return "$num1:$num2";
13146: }
13147:
13148: sub setup_random_from_rndseed {
13149: my ($rndseed)=@_;
13150: if ($rndseed =~/([,:])/) {
13151: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13152: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13153: &Math::Random::random_set_seed_from_phrase($rndseed);
13154: } else {
13155: &Math::Random::random_set_seed($num1,$num2);
13156: }
13157: } else {
13158: &Math::Random::random_set_seed_from_phrase($rndseed);
13159: }
13160: }
13161:
13162: sub latest_receipt_algorithm_id {
13163: return 'receipt3';
13164: }
13165:
13166: sub recunique {
13167: my $fucourseid=shift;
13168: my $unique;
13169: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13170: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13171: $unique=$env{"course.$fucourseid.internal.encseed"};
13172: } else {
13173: $unique=$perlvar{'lonReceipt'};
13174: }
13175: return unpack("%32C*",$unique);
13176: }
13177:
13178: sub recprefix {
13179: my $fucourseid=shift;
13180: my $prefix;
13181: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13182: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13183: $prefix=$env{"course.$fucourseid.internal.encpref"};
13184: } else {
13185: $prefix=$perlvar{'lonHostID'};
13186: }
13187: return unpack("%32C*",$prefix);
13188: }
13189:
13190: sub ireceipt {
13191: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13192:
13193: my $return =&recprefix($fucourseid).'-';
13194:
13195: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13196: $env{'request.state'} eq 'construct') {
13197: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13198: return $return;
13199: }
13200:
13201: my $cuname=unpack("%32C*",$funame);
13202: my $cudom=unpack("%32C*",$fudom);
13203: my $cucourseid=unpack("%32C*",$fucourseid);
13204: my $cusymb=unpack("%32C*",$fusymb);
13205: my $cunique=&recunique($fucourseid);
13206: my $cpart=unpack("%32S*",$part);
13207: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13208:
13209: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13210:
13211: $return.= ($cunique%$cuname+
13212: $cunique%$cudom+
13213: $cusymb%$cuname+
13214: $cusymb%$cudom+
13215: $cucourseid%$cuname+
13216: $cucourseid%$cudom+
13217: $cpart%$cuname+
13218: $cpart%$cudom);
13219: } else {
13220: $return.= ($cunique%$cuname+
13221: $cunique%$cudom+
13222: $cusymb%$cuname+
13223: $cusymb%$cudom+
13224: $cucourseid%$cuname+
13225: $cucourseid%$cudom);
13226: }
13227: return $return;
13228: }
13229:
13230: sub receipt {
13231: my ($part)=@_;
13232: my ($symb,$courseid,$domain,$name) = &whichuser();
13233: return &ireceipt($name,$domain,$courseid,$symb,$part);
13234: }
13235:
13236: sub whichuser {
13237: my ($passedsymb)=@_;
13238: my ($symb,$courseid,$domain,$name,$publicuser);
13239: if (defined($env{'form.grade_symb'})) {
13240: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13241: my $allowed=&allowed('vgr',$tmp_courseid);
13242: if (!$allowed &&
13243: exists($env{'request.course.sec'}) &&
13244: $env{'request.course.sec'} !~ /^\s*$/) {
13245: $allowed=&allowed('vgr',$tmp_courseid.
13246: '/'.$env{'request.course.sec'});
13247: }
13248: if ($allowed) {
13249: ($symb)=&get_env_multiple('form.grade_symb');
13250: $courseid=$tmp_courseid;
13251: ($domain)=&get_env_multiple('form.grade_domain');
13252: ($name)=&get_env_multiple('form.grade_username');
13253: return ($symb,$courseid,$domain,$name,$publicuser);
13254: }
13255: }
13256: if (!$passedsymb) {
13257: $symb=&symbread();
13258: } else {
13259: $symb=$passedsymb;
13260: }
13261: $courseid=$env{'request.course.id'};
13262: $domain=$env{'user.domain'};
13263: $name=$env{'user.name'};
13264: if ($name eq 'public' && $domain eq 'public') {
13265: if (!defined($env{'form.username'})) {
13266: $env{'form.username'}.=time.rand(10000000);
13267: }
13268: $name.=$env{'form.username'};
13269: }
13270: return ($symb,$courseid,$domain,$name,$publicuser);
13271:
13272: }
13273:
13274: # ------------------------------------------------------------ Serves up a file
13275: # returns either the contents of the file or
13276: # -1 if the file doesn't exist
13277: #
13278: # if the target is a file that was uploaded via DOCS,
13279: # a check will be made to see if a current copy exists on the local server,
13280: # if it does this will be served, otherwise a copy will be retrieved from
13281: # the home server for the course and stored in /home/httpd/html/userfiles on
13282: # the local server.
13283:
13284: sub getfile {
13285: my ($file) = @_;
13286: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13287: &repcopy($file);
13288: return &readfile($file);
13289: }
13290:
13291: sub repcopy_userfile {
13292: my ($file)=@_;
13293: my $londocroot = $perlvar{'lonDocRoot'};
13294: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13295: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13296: my ($cdom,$cnum,$filename) =
13297: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13298: my $uri="/uploaded/$cdom/$cnum/$filename";
13299: if (-e "$file") {
13300: # we already have a local copy, check it out
13301: my @fileinfo = stat($file);
13302: my $rtncode;
13303: my $info;
13304: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13305: if ($lwpresp ne 'ok') {
13306: # there is no such file anymore, even though we had a local copy
13307: if ($rtncode eq '404') {
13308: unlink($file);
13309: }
13310: return -1;
13311: }
13312: if ($info < $fileinfo[9]) {
13313: # nice, the file we have is up-to-date, just say okay
13314: return 'ok';
13315: } else {
13316: # the file is outdated, get rid of it
13317: unlink($file);
13318: }
13319: }
13320: # one way or the other, at this point, we don't have the file
13321: # construct the correct path for the file
13322: my @parts = ($cdom,$cnum);
13323: if ($filename =~ m|^(.+)/[^/]+$|) {
13324: push @parts, split(/\//,$1);
13325: }
13326: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13327: foreach my $part (@parts) {
13328: $path .= '/'.$part;
13329: if (!-e $path) {
13330: mkdir($path,0770);
13331: }
13332: }
13333: # now the path exists for sure
13334: # get a user agent
13335: my $transferfile=$file.'.in.transfer';
13336: # FIXME: this should flock
13337: if (-e $transferfile) { return 'ok'; }
13338: my $request;
13339: $uri=~s/^\///;
13340: my $homeserver = &homeserver($cnum,$cdom);
13341: my $protocol = $protocol{$homeserver};
13342: $protocol = 'http' if ($protocol ne 'https');
13343: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
13344: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13345: # did it work?
13346: if ($response->is_error()) {
13347: unlink($transferfile);
13348: &logthis("Userfile repcopy failed for $uri");
13349: return -1;
13350: }
13351: # worked, rename the transfer file
13352: rename($transferfile,$file);
13353: return 'ok';
13354: }
13355:
13356: sub tokenwrapper {
13357: my $uri=shift;
13358: $uri=~s|^https?\://([^/]+)||;
13359: $uri=~s|^/||;
13360: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13361: my $token=$1;
13362: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13363: if ($udom && $uname && $file) {
13364: $file=~s|(\?\.*)*$||;
13365: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13366: my $homeserver = &homeserver($uname,$udom);
13367: my $protocol = $protocol{$homeserver};
13368: $protocol = 'http' if ($protocol ne 'https');
13369: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
13370: (($uri=~/\?/)?'&':'?').'token='.$token.
13371: '&tokenissued='.$perlvar{'lonHostID'};
13372: } else {
13373: return '/adm/notfound.html';
13374: }
13375: }
13376:
13377: # call with reqtype HEAD: get last modification time
13378: # call with reqtype GET: get the file contents
13379: # Do not call this with reqtype GET for large files! It loads everything into memory
13380: #
13381: sub getuploaded {
13382: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13383: $uri=~s/^\///;
13384: my $homeserver = &homeserver($cnum,$cdom);
13385: my $protocol = $protocol{$homeserver};
13386: $protocol = 'http' if ($protocol ne 'https');
13387: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13388: my $request=new HTTP::Request($reqtype,$uri);
13389: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13390: $$rtncode = $response->code;
13391: if (! $response->is_success()) {
13392: return 'failed';
13393: }
13394: if ($reqtype eq 'HEAD') {
13395: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13396: } elsif ($reqtype eq 'GET') {
13397: $$info = $response->content;
13398: }
13399: return 'ok';
13400: }
13401:
13402: sub readfile {
13403: my $file = shift;
13404: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13405: my $fh;
13406: open($fh,"<",$file);
13407: my $a='';
13408: while (my $line = <$fh>) { $a .= $line; }
13409: return $a;
13410: }
13411:
13412: sub filelocation {
13413: my ($dir,$file) = @_;
13414: my $location;
13415: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13416:
13417: if ($file =~ m-^/adm/-) {
13418: $file=~s-^/adm/wrapper/-/-;
13419: $file=~s-^/adm/coursedocs/showdoc/-/-;
13420: }
13421:
13422: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13423: $location = $file;
13424: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13425: my ($udom,$uname,$filename)=
13426: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13427: my $home=&homeserver($uname,$udom);
13428: my $is_me=0;
13429: my @ids=¤t_machine_ids();
13430: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13431: if ($is_me) {
13432: $location=propath($udom,$uname).'/userfiles/'.$filename;
13433: } else {
13434: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13435: $udom.'/'.$uname.'/'.$filename;
13436: }
13437: } elsif ($file =~ m-^/adm/-) {
13438: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13439: } else {
13440: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13441: $file=~s:^/(res|priv)/:/:;
13442: my $space=$1;
13443: if ( !( $file =~ m:^/:) ) {
13444: $location = $dir. '/'.$file;
13445: } else {
13446: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13447: }
13448: }
13449: $location=~s://+:/:g; # remove duplicate /
13450: while ($location=~m{/\.\./}) {
13451: if ($location =~ m{/[^/]+/\.\./}) {
13452: $location=~ s{/[^/]+/\.\./}{/}g;
13453: } else {
13454: $location=~ s{/\.\./}{/}g;
13455: }
13456: } #remove dir/..
13457: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13458: return $location;
13459: }
13460:
13461: sub hreflocation {
13462: my ($dir,$file)=@_;
13463: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13464: $file=filelocation($dir,$file);
13465: } elsif ($file=~m-^/adm/-) {
13466: $file=~s-^/adm/wrapper/-/-;
13467: $file=~s-^/adm/coursedocs/showdoc/-/-;
13468: }
13469: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13470: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13471: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13472: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13473: {/uploaded/$1/$2/}x;
13474: }
13475: if ($file=~ m{^/userfiles/}) {
13476: $file =~ s{^/userfiles/}{/uploaded/};
13477: }
13478: return $file;
13479: }
13480:
13481:
13482:
13483:
13484:
13485: sub current_machine_domains {
13486: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13487: }
13488:
13489: sub machine_domains {
13490: my ($hostname) = @_;
13491: my @domains;
13492: my %hostname = &all_hostnames();
13493: while( my($id, $name) = each(%hostname)) {
13494: # &logthis("-$id-$name-$hostname-");
13495: if ($hostname eq $name) {
13496: push(@domains,&host_domain($id));
13497: }
13498: }
13499: return @domains;
13500: }
13501:
13502: sub current_machine_ids {
13503: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13504: }
13505:
13506: sub machine_ids {
13507: my ($hostname) = @_;
13508: $hostname ||= &hostname($perlvar{'lonHostID'});
13509: my @ids;
13510: my %name_to_host = &all_names();
13511: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13512: return @{ $name_to_host{$hostname} };
13513: }
13514: return;
13515: }
13516:
13517: sub additional_machine_domains {
13518: my @domains;
13519: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13520: while( my $line = <$fh>) {
13521: $line =~ s/\s//g;
13522: push(@domains,$line);
13523: }
13524: return @domains;
13525: }
13526:
13527: sub default_login_domain {
13528: my $domain = $perlvar{'lonDefDomain'};
13529: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13530: foreach my $posdom (¤t_machine_domains(),
13531: &additional_machine_domains()) {
13532: if (lc($posdom) eq lc($testdomain)) {
13533: $domain=$posdom;
13534: last;
13535: }
13536: }
13537: return $domain;
13538: }
13539:
13540: # ------------------------------------------------------------- Declutters URLs
13541:
13542: sub declutter {
13543: my $thisfn=shift;
13544: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13545: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13546: $thisfn=~s{^/home/httpd/html}{};
13547: }
13548: $thisfn=~s/^\///;
13549: $thisfn=~s|^adm/wrapper/||;
13550: $thisfn=~s|^adm/coursedocs/showdoc/||;
13551: $thisfn=~s/^res\///;
13552: $thisfn=~s/^priv\///;
13553: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13554: $thisfn=~s/\?.+$//;
13555: }
13556: return $thisfn;
13557: }
13558:
13559: # ------------------------------------------------------------- Clutter up URLs
13560:
13561: sub clutter {
13562: my $thisfn='/'.&declutter(shift);
13563: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13564: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13565: $thisfn='/res'.$thisfn;
13566: }
13567: if ($thisfn !~m|^/adm|) {
13568: if ($thisfn =~ m|^/ext/|) {
13569: $thisfn='/adm/wrapper'.$thisfn;
13570: } else {
13571: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13572: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13573: if ($embstyle eq 'ssi'
13574: || ($embstyle eq 'hdn')
13575: || ($embstyle eq 'rat')
13576: || ($embstyle eq 'prv')
13577: || ($embstyle eq 'ign')) {
13578: #do nothing with these
13579: } elsif (($embstyle eq 'img')
13580: || ($embstyle eq 'emb')
13581: || ($embstyle eq 'wrp')) {
13582: $thisfn='/adm/wrapper'.$thisfn;
13583: } elsif ($embstyle eq 'unk'
13584: && $thisfn!~/\.(sequence|page)$/) {
13585: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13586: } else {
13587: # &logthis("Got a blank emb style");
13588: }
13589: }
13590: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13591: $thisfn='/adm/wrapper'.$thisfn;
13592: }
13593: return $thisfn;
13594: }
13595:
13596: sub clutter_with_no_wrapper {
13597: my $uri = &clutter(shift);
13598: if ($uri =~ m-^/adm/-) {
13599: $uri =~ s-^/adm/wrapper/-/-;
13600: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13601: }
13602: return $uri;
13603: }
13604:
13605: sub freeze_escape {
13606: my ($value)=@_;
13607: if (ref($value)) {
13608: $value=&nfreeze($value);
13609: return '__FROZEN__'.&escape($value);
13610: }
13611: return &escape($value);
13612: }
13613:
13614:
13615: sub thaw_unescape {
13616: my ($value)=@_;
13617: if ($value =~ /^__FROZEN__/) {
13618: substr($value,0,10,undef);
13619: $value=&unescape($value);
13620: return &thaw($value);
13621: }
13622: return &unescape($value);
13623: }
13624:
13625: sub correct_line_ends {
13626: my ($result)=@_;
13627: $$result =~s/\r\n/\n/mg;
13628: $$result =~s/\r/\n/mg;
13629: }
13630: # ================================================================ Main Program
13631:
13632: sub goodbye {
13633: &logthis("Starting Shut down");
13634: #not converted to using infrastruture and probably shouldn't be
13635: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13636: #converted
13637: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13638: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13639: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13640: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13641: #1.1 only
13642: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13643: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13644: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13645: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13646: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13647: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13648: &logthis(sprintf("%-20s is %s",'hits',$hits));
13649: &flushcourselogs();
13650: &logthis("Shutting down");
13651: }
13652:
13653: sub get_dns {
13654: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13655: if (!$ignore_cache) {
13656: my ($content,$cached)=
13657: &Apache::lonnet::is_cached_new('dns',$url);
13658: if ($cached) {
13659: &$func($content,$hashref);
13660: return;
13661: }
13662: }
13663:
13664: my %alldns;
13665: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13666: foreach my $dns (<$config>) {
13667: next if ($dns !~ /^\^(\S*)/x);
13668: my $line = $1;
13669: my ($host,$protocol) = split(/:/,$line);
13670: if ($protocol ne 'https') {
13671: $protocol = 'http';
13672: }
13673: $alldns{$host} = $protocol;
13674: }
13675: close($config);
13676: }
13677: while (%alldns) {
13678: my ($dns) = sort { $b cmp $a } keys(%alldns);
13679: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13680: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13681: delete($alldns{$dns});
13682: next if ($response->is_error());
13683: if ($url eq '/adm/dns/loncapaCRL') {
13684: return &$func($response);
13685: } else {
13686: my @content = split("\n",$response->content);
13687: unless ($nocache) {
13688: &do_cache_new('dns',$url,\@content,30*24*60*60);
13689: }
13690: &$func(\@content,$hashref);
13691: return;
13692: }
13693: }
13694: my $which = (split('/',$url,4))[3];
13695: if ($which eq 'loncapaCRL') {
13696: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13697: if (-e $diskfile) {
13698: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13699: } else {
13700: &logthis("unable to contact DNS, no on disk file $diskfile available");
13701: }
13702: } else {
13703: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13704: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13705: my @content = <$config>;
13706: close($config);
13707: &$func(\@content,$hashref);
13708: }
13709: }
13710: return;
13711: }
13712:
13713: # ------------------------------------------------------Get DNS checksums file
13714: sub parse_dns_checksums_tab {
13715: my ($lines,$hashref) = @_;
13716: my $lonhost = $perlvar{'lonHostID'};
13717: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13718: my $loncaparev = &get_server_loncaparev($machine_dom);
13719: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13720: my $webconfdir = '/etc/httpd/conf';
13721: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13722: $webconfdir = '/etc/apache2';
13723: } elsif ($distro =~ /^sles(\d+)$/) {
13724: if ($1 >= 10) {
13725: $webconfdir = '/etc/apache2';
13726: }
13727: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13728: if ($1 >= 10.0) {
13729: $webconfdir = '/etc/apache2';
13730: }
13731: }
13732: my ($release,$timestamp) = split(/\-/,$loncaparev);
13733: my (%chksum,%revnum);
13734: if (ref($lines) eq 'ARRAY') {
13735: chomp(@{$lines});
13736: my $version = shift(@{$lines});
13737: if ($version eq $release) {
13738: foreach my $line (@{$lines}) {
13739: my ($file,$version,$shasum) = split(/,/,$line);
13740: if ($file =~ m{^/etc/httpd/conf}) {
13741: if ($webconfdir eq '/etc/apache2') {
13742: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13743: }
13744: }
13745: $chksum{$file} = $shasum;
13746: $revnum{$file} = $version;
13747: }
13748: if (ref($hashref) eq 'HASH') {
13749: %{$hashref} = (
13750: sums => \%chksum,
13751: versions => \%revnum,
13752: );
13753: }
13754: }
13755: }
13756: return;
13757: }
13758:
13759: sub fetch_dns_checksums {
13760: my %checksums;
13761: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13762: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13763: my ($release,$timestamp) = split(/\-/,$loncaparev);
13764: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13765: \%checksums);
13766: return \%checksums;
13767: }
13768:
13769: sub fetch_crl_pemfile {
13770: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13771: }
13772:
13773: sub save_crl_pem {
13774: my ($response) = @_;
13775: my ($msg,$hadchanges);
13776: if (ref($response)) {
13777: my $now = time;
13778: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13779: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13780: if (open(my $fh,'>',"$tmpcrl")) {
13781: print $fh $response->content;
13782: close($fh);
13783: if (-e $lonca) {
13784: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13785: my $check = <PIPE>;
13786: close(PIPE);
13787: chomp($check);
13788: if ($check eq 'verify OK') {
13789: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13790: my $backup;
13791: if (-e $dest) {
13792: if (&File::Copy::move($dest,"$dest.bak")) {
13793: $backup = 'ok';
13794: }
13795: }
13796: if (&File::Copy::move($tmpcrl,$dest)) {
13797: $msg = 'ok';
13798: if ($backup) {
13799: my (%oldnums,%newnums);
13800: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13801: while (<PIPE>) {
13802: $oldnums{(split(/:/))[1]} = 1;
13803: }
13804: close(PIPE);
13805: }
13806: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13807: while(<PIPE>) {
13808: $newnums{(split(/:/))[1]} = 1;
13809: }
13810: close(PIPE);
13811: }
13812: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13813: unless (exists($oldnums{$key})) {
13814: $hadchanges = 1;
13815: last;
13816: }
13817: }
13818: unless ($hadchanges) {
13819: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13820: unless (exists($newnums{$key})) {
13821: $hadchanges = 1;
13822: last;
13823: }
13824: }
13825: }
13826: }
13827: }
13828: } else {
13829: unlink($tmpcrl);
13830: }
13831: } else {
13832: unlink($tmpcrl);
13833: }
13834: } else {
13835: unlink($tmpcrl);
13836: }
13837: }
13838: }
13839: return ($msg,$hadchanges);
13840: }
13841:
13842: # ------------------------------------------------------------ Read domain file
13843: {
13844: my $loaded;
13845: my %domain;
13846:
13847: sub parse_domain_tab {
13848: my ($lines) = @_;
13849: foreach my $line (@$lines) {
13850: next if ($line =~ /^(\#|\s*$ )/x);
13851:
13852: chomp($line);
13853: my ($name,@elements) = split(/:/,$line,9);
13854: my %this_domain;
13855: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13856: 'lang_def', 'city', 'longi', 'lati',
13857: 'primary') {
13858: $this_domain{$field} = shift(@elements);
13859: }
13860: $domain{$name} = \%this_domain;
13861: }
13862: }
13863:
13864: sub reset_domain_info {
13865: undef($loaded);
13866: undef(%domain);
13867: }
13868:
13869: sub load_domain_tab {
13870: my ($ignore_cache,$nocache) = @_;
13871: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13872: my $fh;
13873: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13874: my @lines = <$fh>;
13875: &parse_domain_tab(\@lines);
13876: }
13877: close($fh);
13878: $loaded = 1;
13879: }
13880:
13881: sub domain {
13882: &load_domain_tab() if (!$loaded);
13883:
13884: my ($name,$what) = @_;
13885: return if ( !exists($domain{$name}) );
13886:
13887: if (!$what) {
13888: return $domain{$name}{'description'};
13889: }
13890: return $domain{$name}{$what};
13891: }
13892:
13893: sub domain_info {
13894: &load_domain_tab() if (!$loaded);
13895: return %domain;
13896: }
13897:
13898: }
13899:
13900:
13901: # ------------------------------------------------------------- Read hosts file
13902: {
13903: my %hostname;
13904: my %hostdom;
13905: my %libserv;
13906: my $loaded;
13907: my %name_to_host;
13908: my %internetdom;
13909: my %LC_dns_serv;
13910:
13911: sub parse_hosts_tab {
13912: my ($file) = @_;
13913: foreach my $configline (@$file) {
13914: next if ($configline =~ /^(\#|\s*$ )/x);
13915: chomp($configline);
13916: if ($configline =~ /^\^/) {
13917: if ($configline =~ /^\^([\w.\-]+)/) {
13918: $LC_dns_serv{$1} = 1;
13919: }
13920: next;
13921: }
13922: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13923: $name=~s/\s//g;
13924: if ($id && $domain && $role && $name) {
13925: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13926: my $curr = $hostname{$id};
13927: my $skip;
13928: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13929: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13930: $skip = 1;
13931: } else {
13932: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13933: }
13934: }
13935: unless ($skip) {
13936: push(@{$name_to_host{$name}},$id);
13937: }
13938: } else {
13939: push(@{$name_to_host{$name}},$id);
13940: }
13941: $hostname{$id}=$name;
13942: $hostdom{$id}=$domain;
13943: if ($role eq 'library') { $libserv{$id}=$name; }
13944: if (defined($protocol)) {
13945: if ($protocol eq 'https') {
13946: $protocol{$id} = $protocol;
13947: } else {
13948: $protocol{$id} = 'http';
13949: }
13950: } else {
13951: $protocol{$id} = 'http';
13952: }
13953: if (defined($intdom)) {
13954: $internetdom{$id} = $intdom;
13955: }
13956: }
13957: }
13958: }
13959:
13960: sub reset_hosts_info {
13961: &purge_remembered();
13962: &reset_domain_info();
13963: &reset_hosts_ip_info();
13964: undef(%internetdom);
13965: undef(%name_to_host);
13966: undef(%hostname);
13967: undef(%hostdom);
13968: undef(%libserv);
13969: undef($loaded);
13970: }
13971:
13972: sub load_hosts_tab {
13973: my ($ignore_cache,$nocache) = @_;
13974: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13975: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
13976: my @config = <$config>;
13977: &parse_hosts_tab(\@config);
13978: close($config);
13979: $loaded=1;
13980: }
13981:
13982: sub hostname {
13983: &load_hosts_tab() if (!$loaded);
13984:
13985: my ($lonid) = @_;
13986: return $hostname{$lonid};
13987: }
13988:
13989: sub all_hostnames {
13990: &load_hosts_tab() if (!$loaded);
13991:
13992: return %hostname;
13993: }
13994:
13995: sub all_names {
13996: my ($ignore_cache,$nocache) = @_;
13997: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13998:
13999: return %name_to_host;
14000: }
14001:
14002: sub all_host_domain {
14003: &load_hosts_tab() if (!$loaded);
14004: return %hostdom;
14005: }
14006:
14007: sub all_host_intdom {
14008: &load_hosts_tab() if (!$loaded);
14009: return %internetdom;
14010: }
14011:
14012: sub is_library {
14013: &load_hosts_tab() if (!$loaded);
14014:
14015: return exists($libserv{$_[0]});
14016: }
14017:
14018: sub all_library {
14019: &load_hosts_tab() if (!$loaded);
14020:
14021: return %libserv;
14022: }
14023:
14024: sub unique_library {
14025: #2x reverse removes all hostnames that appear more than once
14026: my %unique = reverse &all_library();
14027: return reverse %unique;
14028: }
14029:
14030: sub get_servers {
14031: &load_hosts_tab() if (!$loaded);
14032:
14033: my ($domain,$type) = @_;
14034: my %possible_hosts = ($type eq 'library') ? %libserv
14035: : %hostname;
14036: my %result;
14037: if (ref($domain) eq 'ARRAY') {
14038: while ( my ($host,$hostname) = each(%possible_hosts)) {
14039: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14040: $result{$host} = $hostname;
14041: }
14042: }
14043: } else {
14044: while ( my ($host,$hostname) = each(%possible_hosts)) {
14045: if ($hostdom{$host} eq $domain) {
14046: $result{$host} = $hostname;
14047: }
14048: }
14049: }
14050: return %result;
14051: }
14052:
14053: sub get_unique_servers {
14054: my %unique = reverse &get_servers(@_);
14055: return reverse %unique;
14056: }
14057:
14058: sub host_domain {
14059: &load_hosts_tab() if (!$loaded);
14060:
14061: my ($lonid) = @_;
14062: return $hostdom{$lonid};
14063: }
14064:
14065: sub all_domains {
14066: &load_hosts_tab() if (!$loaded);
14067:
14068: my %seen;
14069: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14070: return @uniq;
14071: }
14072:
14073: sub internet_dom {
14074: &load_hosts_tab() if (!$loaded);
14075:
14076: my ($lonid) = @_;
14077: return $internetdom{$lonid};
14078: }
14079:
14080: sub is_LC_dns {
14081: &load_hosts_tab() if (!$loaded);
14082:
14083: my ($hostname) = @_;
14084: return exists($LC_dns_serv{$hostname});
14085: }
14086:
14087: }
14088:
14089: {
14090: my %iphost;
14091: my %name_to_ip;
14092: my %lonid_to_ip;
14093:
14094: sub get_hosts_from_ip {
14095: my ($ip) = @_;
14096: my %iphosts = &get_iphost();
14097: if (ref($iphosts{$ip})) {
14098: return @{$iphosts{$ip}};
14099: }
14100: return;
14101: }
14102:
14103: sub reset_hosts_ip_info {
14104: undef(%iphost);
14105: undef(%name_to_ip);
14106: undef(%lonid_to_ip);
14107: }
14108:
14109: sub get_host_ip {
14110: my ($lonid) = @_;
14111: if (exists($lonid_to_ip{$lonid})) {
14112: return $lonid_to_ip{$lonid};
14113: }
14114: my $name=&hostname($lonid);
14115: my $ip = gethostbyname($name);
14116: return if (!$ip || length($ip) ne 4);
14117: $ip=inet_ntoa($ip);
14118: $name_to_ip{$name} = $ip;
14119: $lonid_to_ip{$lonid} = $ip;
14120: return $ip;
14121: }
14122:
14123: sub get_iphost {
14124: my ($ignore_cache,$nocache) = @_;
14125:
14126: if (!$ignore_cache) {
14127: if (%iphost) {
14128: return %iphost;
14129: }
14130: my ($ip_info,$cached)=
14131: &Apache::lonnet::is_cached_new('iphost','iphost');
14132: if ($cached) {
14133: %iphost = %{$ip_info->[0]};
14134: %name_to_ip = %{$ip_info->[1]};
14135: %lonid_to_ip = %{$ip_info->[2]};
14136: return %iphost;
14137: }
14138: }
14139:
14140: # get yesterday's info for fallback
14141: my %old_name_to_ip;
14142: my ($ip_info,$cached)=
14143: &Apache::lonnet::is_cached_new('iphost','iphost');
14144: if ($cached) {
14145: %old_name_to_ip = %{$ip_info->[1]};
14146: }
14147:
14148: my %name_to_host = &all_names($ignore_cache,$nocache);
14149: foreach my $name (keys(%name_to_host)) {
14150: my $ip;
14151: if (!exists($name_to_ip{$name})) {
14152: $ip = gethostbyname($name);
14153: if (!$ip || length($ip) ne 4) {
14154: if (defined($old_name_to_ip{$name})) {
14155: $ip = $old_name_to_ip{$name};
14156: &logthis("Can't find $name defaulting to old $ip");
14157: } else {
14158: &logthis("Name $name no IP found");
14159: next;
14160: }
14161: } else {
14162: $ip=inet_ntoa($ip);
14163: }
14164: $name_to_ip{$name} = $ip;
14165: } else {
14166: $ip = $name_to_ip{$name};
14167: }
14168: foreach my $id (@{ $name_to_host{$name} }) {
14169: $lonid_to_ip{$id} = $ip;
14170: }
14171: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14172: }
14173: unless ($nocache) {
14174: &do_cache_new('iphost','iphost',
14175: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14176: 48*60*60);
14177: }
14178:
14179: return %iphost;
14180: }
14181:
14182: #
14183: # Given a DNS returns the loncapa host name for that DNS
14184: #
14185: sub host_from_dns {
14186: my ($dns) = @_;
14187: my @hosts;
14188: my $ip;
14189:
14190: if (exists($name_to_ip{$dns})) {
14191: $ip = $name_to_ip{$dns};
14192: }
14193: if (!$ip) {
14194: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14195: if (length($ip) == 4) {
14196: $ip = &IO::Socket::inet_ntoa($ip);
14197: }
14198: }
14199: if ($ip) {
14200: @hosts = get_hosts_from_ip($ip);
14201: return $hosts[0];
14202: }
14203: return undef;
14204: }
14205:
14206: sub get_internet_names {
14207: my ($lonid) = @_;
14208: return if ($lonid eq '');
14209: my ($idnref,$cached)=
14210: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14211: if ($cached) {
14212: return $idnref;
14213: }
14214: my $ip = &get_host_ip($lonid);
14215: my @hosts = &get_hosts_from_ip($ip);
14216: my %iphost = &get_iphost();
14217: my (@idns,%seen);
14218: foreach my $id (@hosts) {
14219: my $dom = &host_domain($id);
14220: my $prim_id = &domain($dom,'primary');
14221: my $prim_ip = &get_host_ip($prim_id);
14222: next if ($seen{$prim_ip});
14223: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14224: foreach my $id (@{$iphost{$prim_ip}}) {
14225: my $intdom = &internet_dom($id);
14226: unless (grep(/^\Q$intdom\E$/,@idns)) {
14227: push(@idns,$intdom);
14228: }
14229: }
14230: }
14231: $seen{$prim_ip} = 1;
14232: }
14233: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14234: }
14235:
14236: }
14237:
14238: sub all_loncaparevs {
14239: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14240: }
14241:
14242: # ---------------------------------------------------------- Read loncaparev table
14243: {
14244: sub load_loncaparevs {
14245: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14246: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14247: while (my $configline=<$config>) {
14248: chomp($configline);
14249: my ($hostid,$loncaparev)=split(/:/,$configline);
14250: $loncaparevs{$hostid}=$loncaparev;
14251: }
14252: close($config);
14253: }
14254: }
14255: }
14256: }
14257:
14258: # ---------------------------------------------------------- Read serverhostID table
14259: {
14260: sub load_serverhomeIDs {
14261: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14262: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14263: while (my $configline=<$config>) {
14264: chomp($configline);
14265: my ($name,$id)=split(/:/,$configline);
14266: $serverhomeIDs{$name}=$id;
14267: }
14268: close($config);
14269: }
14270: }
14271: }
14272: }
14273:
14274:
14275: BEGIN {
14276:
14277: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14278: unless ($readit) {
14279: {
14280: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14281: %perlvar = (%perlvar,%{$configvars});
14282: }
14283:
14284:
14285: # ------------------------------------------------------ Read spare server file
14286: {
14287: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14288:
14289: while (my $configline=<$config>) {
14290: chomp($configline);
14291: if ($configline) {
14292: my ($host,$type) = split(':',$configline,2);
14293: if (!defined($type) || $type eq '') { $type = 'default' };
14294: push(@{ $spareid{$type} }, $host);
14295: }
14296: }
14297: close($config);
14298: }
14299: # ------------------------------------------------------------ Read permissions
14300: {
14301: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14302:
14303: while (my $configline=<$config>) {
14304: chomp($configline);
14305: if ($configline) {
14306: my ($role,$perm)=split(/ /,$configline);
14307: if ($perm ne '') { $pr{$role}=$perm; }
14308: }
14309: }
14310: close($config);
14311: }
14312:
14313: # -------------------------------------------- Read plain texts for permissions
14314: {
14315: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14316:
14317: while (my $configline=<$config>) {
14318: chomp($configline);
14319: if ($configline) {
14320: my ($short,@plain)=split(/:/,$configline);
14321: %{$prp{$short}} = ();
14322: if (@plain > 0) {
14323: $prp{$short}{'std'} = $plain[0];
14324: for (my $i=1; $i<@plain; $i++) {
14325: $prp{$short}{'alt'.$i} = $plain[$i];
14326: }
14327: }
14328: }
14329: }
14330: close($config);
14331: }
14332:
14333: # ---------------------------------------------------------- Read package table
14334: {
14335: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14336:
14337: while (my $configline=<$config>) {
14338: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14339: chomp($configline);
14340: my ($short,$plain)=split(/:/,$configline);
14341: my ($pack,$name)=split(/\&/,$short);
14342: if ($plain ne '') {
14343: $packagetab{$pack.'&'.$name.'&name'}=$name;
14344: $packagetab{$short}=$plain;
14345: }
14346: }
14347: close($config);
14348: }
14349:
14350: # ---------------------------------------------------------- Read loncaparev table
14351:
14352: &load_loncaparevs();
14353:
14354: # ---------------------------------------------------------- Read serverhostID table
14355:
14356: &load_serverhomeIDs();
14357:
14358: # ---------------------------------------------------------- Read releaseslist XML
14359: {
14360: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14361: if (-e $file) {
14362: my $parser = HTML::LCParser->new($file);
14363: while (my $token = $parser->get_token()) {
14364: if ($token->[0] eq 'S') {
14365: my $item = $token->[1];
14366: my $name = $token->[2]{'name'};
14367: my $value = $token->[2]{'value'};
14368: my $valuematch = $token->[2]{'valuematch'};
14369: my $namematch = $token->[2]{'namematch'};
14370: if ($item eq 'parameter') {
14371: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14372: my $release = $parser->get_text();
14373: $release =~ s/(^\s*|\s*$ )//gx;
14374: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14375: }
14376: } elsif ($item ne '' && $name ne '') {
14377: my $release = $parser->get_text();
14378: $release =~ s/(^\s*|\s*$ )//gx;
14379: $needsrelease{$item.':'.$name.':'.$value} = $release;
14380: }
14381: }
14382: }
14383: }
14384: }
14385:
14386: # ---------------------------------------------------------- Read managers table
14387: {
14388: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14389: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14390: while (my $configline=<$config>) {
14391: chomp($configline);
14392: next if ($configline =~ /^\#/);
14393: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14394: $managerstab{$configline} = 1;
14395: }
14396: }
14397: close($config);
14398: }
14399: }
14400: }
14401:
14402: # ------------- set up temporary directory
14403: {
14404: $tmpdir = LONCAPA::tempdir();
14405:
14406: }
14407:
14408: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14409: 'compress_threshold'=> 20_000,
14410: });
14411:
14412: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14413: $dumpcount=0;
14414: $locknum=0;
14415:
14416: &logtouch();
14417: &logthis('<font color="yellow">INFO: Read configuration</font>');
14418: $readit=1;
14419: {
14420: use integer;
14421: my $test=(2**32)+1;
14422: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14423: &logthis(" Detected 64bit platform ($_64bit)");
14424: }
14425: }
14426: }
14427:
14428: 1;
14429: __END__
14430:
14431: =pod
14432:
14433: =head1 NAME
14434:
14435: Apache::lonnet - Subroutines to ask questions about things in the network.
14436:
14437: =head1 SYNOPSIS
14438:
14439: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14440:
14441: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14442:
14443: Common parameters:
14444:
14445: =over 4
14446:
14447: =item *
14448:
14449: $uname : an internal username (if $cname expecting a course Id specifically)
14450:
14451: =item *
14452:
14453: $udom : a domain (if $cdom expecting a course's domain specifically)
14454:
14455: =item *
14456:
14457: $symb : a resource instance identifier
14458:
14459: =item *
14460:
14461: $namespace : the name of a .db file that contains the data needed or
14462: being set.
14463:
14464: =back
14465:
14466: =head1 OVERVIEW
14467:
14468: lonnet provides subroutines which interact with the
14469: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14470: about classes, users, and resources.
14471:
14472: For many of these objects you can also use this to store data about
14473: them or modify them in various ways.
14474:
14475: =head2 Symbs
14476:
14477: To identify a specific instance of a resource, LON-CAPA uses symbols
14478: or "symbs"X<symb>. These identifiers are built from the URL of the
14479: map, the resource number of the resource in the map, and the URL of
14480: the resource itself. The latter is somewhat redundant, but might help
14481: if maps change.
14482:
14483: An example is
14484:
14485: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14486:
14487: The respective map entry is
14488:
14489: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14490: title="Problem 2">
14491: </resource>
14492:
14493: Symbs are used by the random number generator, as well as to store and
14494: restore data specific to a certain instance of for example a problem.
14495:
14496: =head2 Storing And Retrieving Data
14497:
14498: X<store()>X<cstore()>X<restore()>Three of the most important functions
14499: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14500: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14501: is is the non-critical message twin of cstore. These functions are for
14502: handlers to store a perl hash to a user's permanent data space in an
14503: easy manner, and to retrieve it again on another call. It is expected
14504: that a handler would use this once at the beginning to retrieve data,
14505: and then again once at the end to send only the new data back.
14506:
14507: The data is stored in the user's data directory on the user's
14508: homeserver under the ID of the course.
14509:
14510: The hash that is returned by restore will have all of the previous
14511: value for all of the elements of the hash.
14512:
14513: Example:
14514:
14515: #creating a hash
14516: my %hash;
14517: $hash{'foo'}='bar';
14518:
14519: #storing it
14520: &Apache::lonnet::cstore(\%hash);
14521:
14522: #changing a value
14523: $hash{'foo'}='notbar';
14524:
14525: #adding a new value
14526: $hash{'bar'}='foo';
14527: &Apache::lonnet::cstore(\%hash);
14528:
14529: #retrieving the hash
14530: my %history=&Apache::lonnet::restore();
14531:
14532: #print the hash
14533: foreach my $key (sort(keys(%history))) {
14534: print("\%history{$key} = $history{$key}");
14535: }
14536:
14537: Will print out:
14538:
14539: %history{1:foo} = bar
14540: %history{1:keys} = foo:timestamp
14541: %history{1:timestamp} = 990455579
14542: %history{2:bar} = foo
14543: %history{2:foo} = notbar
14544: %history{2:keys} = foo:bar:timestamp
14545: %history{2:timestamp} = 990455580
14546: %history{bar} = foo
14547: %history{foo} = notbar
14548: %history{timestamp} = 990455580
14549: %history{version} = 2
14550:
14551: Note that the special hash entries C<keys>, C<version> and
14552: C<timestamp> were added to the hash. C<version> will be equal to the
14553: total number of versions of the data that have been stored. The
14554: C<timestamp> attribute will be the UNIX time the hash was
14555: stored. C<keys> is available in every historical section to list which
14556: keys were added or changed at a specific historical revision of a
14557: hash.
14558:
14559: B<Warning>: do not store the hash that restore returns directly. This
14560: will cause a mess since it will restore the historical keys as if the
14561: were new keys. I.E. 1:foo will become 1:1:foo etc.
14562:
14563: Calling convention:
14564:
14565: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14566: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14567:
14568: For more detailed information, see lonnet specific documentation.
14569:
14570: =head1 RETURN MESSAGES
14571:
14572: =over 4
14573:
14574: =item * B<con_lost>: unable to contact remote host
14575:
14576: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14577: when the connection is brought back up
14578:
14579: =item * B<con_failed>: unable to contact remote host and unable to save message
14580: for later delivery
14581:
14582: =item * B<error:>: an error a occurred, a description of the error follows the :
14583:
14584: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14585: that was requested
14586:
14587: =back
14588:
14589: =head1 PUBLIC SUBROUTINES
14590:
14591: =head2 Session Environment Functions
14592:
14593: =over 4
14594:
14595: =item *
14596: X<appenv()>
14597: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14598: the user envirnoment file, and will be restored for each access this
14599: user makes during this session, also modifies the %env for the current
14600: process. Optional rolesarrayref - if defined contains a reference to an array
14601: of roles which are exempt from the restriction on modifying user.role entries
14602: in the user's environment.db and in %env.
14603:
14604: =item *
14605: X<delenv()>
14606: B<delenv($delthis,$regexp)>: removes all items from the session
14607: environment file that begin with $delthis. If the
14608: optional second arg - $regexp - is true, $delthis is treated as a
14609: regular expression, otherwise \Q$delthis\E is used.
14610: The values are also deleted from the current processes %env.
14611:
14612: =item * get_env_multiple($name)
14613:
14614: gets $name from the %env hash, it seemlessly handles the cases where multiple
14615: values may be defined and end up as an array ref.
14616:
14617: returns an array of values
14618:
14619: =back
14620:
14621: =head2 User Information
14622:
14623: =over 4
14624:
14625: =item *
14626: X<queryauthenticate()>
14627: B<queryauthenticate($uname,$udom)>: try to determine user's current
14628: authentication scheme
14629:
14630: =item *
14631: X<authenticate()>
14632: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14633: authenticate user from domain's lib servers (first use the current
14634: one). C<$upass> should be the users password.
14635: $checkdefauth is optional (value is 1 if a check should be made to
14636: authenticate user using default authentication method, and allow
14637: account creation if username does not have account in the domain).
14638: $clientcancheckhost is optional (value is 1 if checking whether the
14639: server can host will occur on the client side in lonauth.pm).
14640:
14641: =item *
14642: X<homeserver()>
14643: B<homeserver($uname,$udom)>: find the server which has
14644: the user's directory and files (there must be only one), this caches
14645: the answer, and also caches if there is a borken connection.
14646:
14647: =item *
14648: X<idget()>
14649: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14650: a list of student/employee IDs or clicker IDs
14651: (student/employee IDs are a unique resource in a domain, there must be
14652: only 1 ID per username, and only 1 username per ID in a specific domain).
14653: clickerIDs are not necessarily unique, as students might share clickers.
14654: (returns hash: id=>name,id=>name)
14655:
14656: =item *
14657: X<idrget()>
14658: B<idrget($udom,@unames)>: find the IDs behind a list of
14659: usernames (returns hash: name=>id,name=>id)
14660:
14661: =item *
14662: X<idput()>
14663: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14664: names and associated student/employee IDs or clicker IDs.
14665:
14666: =item *
14667: X<iddel()>
14668: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14669: student/employee ID or clicker ID username look-ups from domain.
14670: The homeserver ($uhome) and namespace ($namespace) are optional.
14671: If no $uhome is provided, it will be determined usig &homeserver()
14672: for each user. If no $namespace is provided, the default is ids.
14673:
14674: =item *
14675: X<updateclickers()>
14676: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14677: clicker ID-to-username look-ups in clickers.db on library server.
14678: Permitted actions are add or del (i.e., add or delete). The
14679: clickers.db contains clickerID as keys (escaped), and each corresponding
14680: value is an escaped comma-separated list of usernames (for whom the
14681: library server is the homeserver), who registered that particular ID.
14682: If $critical is true, the update will be sent via &critical, otherwise
14683: &reply() will be used.
14684:
14685: =item *
14686: X<rolesinit()>
14687: B<rolesinit($udom,$username)>: get user privileges.
14688: returns user role, first access and timer interval hashes
14689:
14690: =item *
14691: X<privileged()>
14692: B<privileged($username,$domain)>: returns a true if user has a
14693: privileged and active role (i.e. su or dc), false otherwise.
14694:
14695: =item *
14696: X<getsection()>
14697: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14698: course $cname, return section name/number or '' for "not in course"
14699: and '-1' for "no section"
14700:
14701: =item *
14702: X<userenvironment()>
14703: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14704: passed in @what from the requested user's environment, returns a hash
14705:
14706: =item *
14707: X<userlog_query()>
14708: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14709: activity.log file. %filters defines filters applied when parsing the
14710: log file. These can be start or end timestamps, or the type of action
14711: - log to look for Login or Logout events, check for Checkin or
14712: Checkout, role for role selection. The response is in the form
14713: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14714: escaped strings of the action recorded in the activity.log file.
14715:
14716: =back
14717:
14718: =head2 User Roles
14719:
14720: =over 4
14721:
14722: =item *
14723:
14724: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14725: returns codes for allowed actions.
14726:
14727: The first argument is required, all others are optional.
14728:
14729: $priv is the privilege being checked.
14730: $uri contains additional information about what is being checked for access (e.g.,
14731: URL, course ID etc.).
14732: $symb is the unique resource instance identifier in a course; if needed,
14733: but not provided, it will be retrieved via a call to &symbread().
14734: $role is the role for which a priv is being checked (only used if priv is evb).
14735: $clientip is the user's IP address (only used when checking for access to portfolio
14736: files).
14737: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14738: prevents recursive calls to &allowed.
14739:
14740: F: full access
14741: U,I,K: authentication modes (cxx only)
14742: '': forbidden
14743: 1: user needs to choose course
14744: 2: browse allowed
14745: A: passphrase authentication needed
14746: B: access temporarily blocked because of a blocking event in a course.
14747:
14748: =item *
14749:
14750: constructaccess($url,$setpriv) : check for access to construction space URL
14751:
14752: See if the owner domain and name in the URL match those in the
14753: expected environment. If so, return three element list
14754: ($ownername,$ownerdomain,$ownerhome).
14755:
14756: Otherwise return the null string.
14757:
14758: If second argument 'setpriv' is true, it assigns the privileges,
14759: and returns the same three element list, unless the owner has
14760: blocked "ad hoc" Domain Coordinator access to the Author Space,
14761: in which case the null string is returned.
14762:
14763: =item *
14764:
14765: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14766: define a custom role rolename set privileges in format of lonTabs/roles.tab
14767: for system, domain, and course level. $uname and $udom are optional (current
14768: user's username and domain will be used when either of $uname or $udom are absent.
14769:
14770: =item *
14771:
14772: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14773: (rolesplain.tab); plain text explanation of a user role term.
14774: $type is Course (default) or Community.
14775: If $forcedefault evaluates to true, text returned will be default
14776: text for $type. Otherwise, if this is a course, the text returned
14777: will be a custom name for the role (if defined in the course's
14778: environment). If no custom name is defined the default is returned.
14779:
14780: =item *
14781:
14782: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14783: All arguments are optional. Returns a hash of a roles, either for
14784: co-author/assistant author roles for a user's Construction Space
14785: (default), or if $context is 'userroles', roles for the user himself,
14786: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14787: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14788: For each key, value is set to colon-separated start and end times for
14789: the role. If no username and domain are specified, will default to
14790: current user/domain. Types, roles, and roledoms are references to arrays
14791: of role statuses (active, future or previous), roles
14792: (e.g., cc,in, st etc.) and domains of the roles which can be used
14793: to restrict the list of roles reported. If no array ref is
14794: provided for types, will default to return only active roles.
14795:
14796: =item *
14797:
14798: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14799: user: $uname:$udom has a role in the course: $cdom_$cnum.
14800:
14801: Additional optional arguments are: $type (if role checking is to be restricted
14802: to certain user status types -- previous (expired roles), active (currently
14803: available roles) or future (roles available in the future), and
14804: $hideprivileged -- if true will not report course roles for users who
14805: have active Domain Coordinator role in course's domain or in additional
14806: domains (specified in 'Domains to check for privileged users' in course
14807: environment -- set via: Course Settings -> Classlists and staff listing).
14808:
14809: =item *
14810:
14811: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14812: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14813: $possdomains and $possroles are optional array refs -- to domains to check and
14814: roles to check. If $possdomains is not specified, a dump will be done of the
14815: users' roles.db to check for a dc or su role in any domain. This can be
14816: time consuming if &privileged is called repeatedly (e.g., when displaying a
14817: classlist), so in such cases, supplying a $possdomains array is preferred, as
14818: this then allows &privileged_by_domain() to be used, which caches the identity
14819: of privileged users, eliminating the need for repeated calls to &dump().
14820:
14821: =item *
14822:
14823: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14824: where the outer hash keys are domains specified in the $possdomains array ref,
14825: next inner hash keys are privileged roles specified in the $roles array ref,
14826: and the innermost hash contains key = value pairs for username:domain = end:start
14827: for active or future "privileged" users with that role in that domain. To avoid
14828: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14829: innerhash are cached using priv_$role and $dom as the identifiers.
14830:
14831: =back
14832:
14833: =head2 User Modification
14834:
14835: =over 4
14836:
14837: =item *
14838:
14839: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14840: user for the level given by URL. Optional start and end dates (leave empty
14841: string or zero for "no date")
14842:
14843: =item *
14844:
14845: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14846: change a users, password, possible return values are: ok,
14847: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14848: refused
14849:
14850: =item *
14851:
14852: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14853:
14854: =item *
14855:
14856: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14857: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14858:
14859: will update user information (firstname,middlename,lastname,generation,
14860: permanentemail), and if forceid is true, student/employee ID also.
14861: A user's institutional affiliation(s) can also be updated.
14862: User information fields will not be overwritten with empty entries
14863: unless the field is included in the $candelete array reference.
14864: This array is included when a single user is modified via "Manage Users",
14865: or when Autoupdate.pl is run by cron in a domain.
14866:
14867: =item *
14868:
14869: modifystudent
14870:
14871: modify a student's enrollment and identification information.
14872: The course id is resolved based on the current user's environment.
14873: This means the invoking user must be a course coordinator or otherwise
14874: associated with a course.
14875:
14876: This call is essentially a wrapper for lonnet::modifyuser and
14877: lonnet::modify_student_enrollment
14878:
14879: Inputs:
14880:
14881: =over 4
14882:
14883: =item B<$udom> Student's loncapa domain
14884:
14885: =item B<$uname> Student's loncapa login name
14886:
14887: =item B<$uid> Student/Employee ID
14888:
14889: =item B<$umode> Student's authentication mode
14890:
14891: =item B<$upass> Student's password
14892:
14893: =item B<$first> Student's first name
14894:
14895: =item B<$middle> Student's middle name
14896:
14897: =item B<$last> Student's last name
14898:
14899: =item B<$gene> Student's generation
14900:
14901: =item B<$usec> Student's section in course
14902:
14903: =item B<$end> Unix time of the roles expiration
14904:
14905: =item B<$start> Unix time of the roles start date
14906:
14907: =item B<$forceid> If defined, allow $uid to be changed
14908:
14909: =item B<$desiredhome> server to use as home server for student
14910:
14911: =item B<$email> Student's permanent e-mail address
14912:
14913: =item B<$type> Type of enrollment (auto or manual)
14914:
14915: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14916:
14917: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14918:
14919: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14920:
14921: =item B<$context> role change context (shown in User Management Logs display in a course)
14922:
14923: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14924:
14925: =item B<$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.
14926:
14927: =back
14928:
14929: =item *
14930:
14931: modify_student_enrollment
14932:
14933: Change a student's enrollment status in a class. The environment variable
14934: 'role.request.course' must be defined for this function to proceed.
14935:
14936: Inputs:
14937:
14938: =over 4
14939:
14940: =item $udom, student's domain
14941:
14942: =item $uname, student's name
14943:
14944: =item $uid, student's user id
14945:
14946: =item $first, student's first name
14947:
14948: =item $middle
14949:
14950: =item $last
14951:
14952: =item $gene
14953:
14954: =item $usec
14955:
14956: =item $end
14957:
14958: =item $start
14959:
14960: =item $type
14961:
14962: =item $locktype
14963:
14964: =item $cid
14965:
14966: =item $selfenroll
14967:
14968: =item $context
14969:
14970: =item $credits, number of credits student will earn from this class
14971:
14972: =item $instsec, institutional course section code for student
14973:
14974: =back
14975:
14976:
14977: =item *
14978:
14979: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14980: custom role; give a custom role to a user for the level given by URL. Specify
14981: name and domain of role author, and role name
14982:
14983: =item *
14984:
14985: revokerole($udom,$uname,$url,$role) : revoke a role for url
14986:
14987: =item *
14988:
14989: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14990:
14991: =back
14992:
14993: =head2 Course Infomation
14994:
14995: =over 4
14996:
14997: =item *
14998:
14999: coursedescription($courseid,$options) : returns a hash of information about the
15000: specified course id, including all environment settings for the
15001: course, the description of the course will be in the hash under the
15002: key 'description'
15003:
15004: $options is an optional parameter that if supplied is a hash reference that controls
15005: what how this function works. It has the following key/values:
15006:
15007: =over 4
15008:
15009: =item freshen_cache
15010:
15011: If defined, and the environment cache for the course is valid, it is
15012: returned in the returned hash.
15013:
15014: =item one_time
15015:
15016: If defined, the last cache time is set to _now_
15017:
15018: =item user
15019:
15020: If defined, the supplied username is used instead of the current user.
15021:
15022:
15023: =back
15024:
15025: =item *
15026:
15027: resdata($name,$domain,$type,@which) : request for current parameter
15028: setting for a specific $type, where $type is either 'course' or 'user',
15029: @what should be a list of parameters to ask about. This routine caches
15030: answers for 10 minutes.
15031:
15032: =item *
15033:
15034: get_courseresdata($courseid, $domain) : dump the entire course resource
15035: data base, returning a hash that is keyed by the resource name and has
15036: values that are the resource value. I believe that the timestamps and
15037: versions are also returned.
15038:
15039: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15040: supplemental content area. This routine caches the number of files for
15041: 10 minutes.
15042:
15043: =back
15044:
15045: =head2 Course Modification
15046:
15047: =over 4
15048:
15049: =item *
15050:
15051: writecoursepref($courseid,%prefs) : write preferences (environment
15052: database) for a course
15053:
15054: =item *
15055:
15056: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15057:
15058: =item *
15059:
15060: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15061:
15062: =item *
15063:
15064: is_course($courseid), is_course($cdom, $cnum)
15065:
15066: Accepts either a combined $courseid (in the form of domain_courseid) or the
15067: two component version $cdom, $cnum. It checks if the specified course exists.
15068:
15069: Returns:
15070: undef if the course doesn't exist, otherwise
15071: in scalar context the combined courseid.
15072: in list context the two components of the course identifier, domain and
15073: courseid.
15074:
15075: =back
15076:
15077: =head2 Resource Subroutines
15078:
15079: =over 4
15080:
15081: =item *
15082:
15083: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15084:
15085: =item *
15086:
15087: repcopy($filename) : subscribes to the requested file, and attempts to
15088: replicate from the owning library server, Might return
15089: 'unavailable', 'not_found', 'forbidden', 'ok', or
15090: 'bad_request', also attempts to grab the metadata for the
15091: resource. Expects the local filesystem pathname
15092: (/home/httpd/html/res/....)
15093:
15094: =back
15095:
15096: =head2 Resource Information
15097:
15098: =over 4
15099:
15100: =item *
15101:
15102: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15103: and returns the value of a variety of different possible values,
15104: $varname should be a request string, and the other parameters can be
15105: used to specify who and what one is asking about. Ordinarily, $cid
15106: does not need to be specified, as it is retrived from
15107: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15108: within lonuserstate::loadmap() when initializing a course, before
15109: $env{'request.course.id'} has been set, so it needs to be provided
15110: in that one case.
15111:
15112: Possible values for $varname are environment.lastname (or other item
15113: from the envirnment hash), user.name (or someother aspect about the
15114: user), resource.0.maxtries (or some other part and parameter of a
15115: resource)
15116:
15117: =item *
15118:
15119: directcondval($number) : get current value of a condition; reads from a state
15120: string
15121:
15122: =item *
15123:
15124: condval($condidx) : value of condition index based on state
15125:
15126: =item *
15127:
15128: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15129: resource's metadata, $what should be either a specific key, or either
15130: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15131: packages that this resource currently uses, the last 3 arguments are
15132: only used internally for recursive metadata.
15133:
15134: the toolsymb is only used where the uri is for an external tool (for which
15135: the uri as well as the symb are guaranteed to be unique).
15136:
15137: this function automatically caches all requests except any made recursively
15138: to retrieve a list of metadata keys for an imported library file ($liburi is
15139: defined).
15140:
15141: =item *
15142:
15143: metadata_query($query,$custom,$customshow) : make a metadata query against the
15144: network of library servers; returns file handle of where SQL and regex results
15145: will be stored for query
15146:
15147: =item *
15148:
15149: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15150: return symbolic list entry (all arguments optional).
15151:
15152: Args: filename is the filename (including path) for the file for which a symb
15153: is required; donotrecurse, if true will prevent calls to allowed() being made
15154: to check access status if more than one resource was found in the bighash
15155: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15156: a randompick); ignorecachednull, if true will prevent a symb of '' being
15157: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15158: cause possible symbs to be checked to determine if they are subject to content
15159: blocking, if so they will not be included as possible symbs; possibles is a
15160: ref to a hash, which, as a side effect, will be populated with all possible
15161: symbs (content blocking not tested).
15162:
15163: returns the data handle
15164:
15165: =item *
15166:
15167: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15168: and is a possible symb for the URL in $thisfn, and if is an encrypted
15169: resource that the user accessed using /enc/ returns a 1 on success, 0
15170: on failure, user must be in a course, as it assumes the existence of
15171: the course initial hash, and uses $env('request.course.id'}. The third
15172: arg is an optional reference to a scalar. If this arg is passed in the
15173: call to symbverify, it will be set to 1 if the symb has been set to be
15174: encrypted; otherwise it will be null.
15175:
15176: =item *
15177:
15178: symbclean($symb) : removes versions numbers from a symb, returns the
15179: cleaned symb
15180:
15181: =item *
15182:
15183: is_on_map($uri) : checks if the $uri is somewhere on the current
15184: course map, user must be in a course for it to work.
15185:
15186: =item *
15187:
15188: numval($salt) : return random seed value (addend for rndseed)
15189:
15190: =item *
15191:
15192: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15193: a random seed, all arguments are optional, if they aren't sent it uses the
15194: environment to derive them. Note: if symb isn't sent and it can't get one
15195: from &symbread it will use the current time as its return value
15196:
15197: =item *
15198:
15199: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15200: unfakeable, receipt
15201:
15202: =item *
15203:
15204: receipt() : API to ireceipt working off of env values; given out to users
15205:
15206: =item *
15207:
15208: countacc($url) : count the number of accesses to a given URL
15209:
15210: =item *
15211:
15212: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15213:
15214: =item *
15215:
15216: checkin($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 $tcrsid)
15217:
15218: =item *
15219:
15220: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15221:
15222: =item *
15223:
15224: devalidate($symb) : devalidate temporary spreadsheet calculations,
15225: forcing spreadsheet to reevaluate the resource scores next time.
15226:
15227: =item *
15228:
15229: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15230: when viewing in course context.
15231:
15232: input: six args -- filename (decluttered), course number, course domain,
15233: url, symb (if registered) and group (if this is a
15234: group item -- e.g., bulletin board, group page etc.).
15235:
15236: output: array of five scalars --
15237: $cfile -- url for file editing if editable on current server
15238: $home -- homeserver of resource (i.e., for author if published,
15239: or course if uploaded.).
15240: $switchserver -- 1 if server switch will be needed.
15241: $forceedit -- 1 if icon/link should be to go to edit mode
15242: $forceview -- 1 if icon/link should be to go to view mode
15243:
15244: =item *
15245:
15246: is_course_upload($file,$cnum,$cdom)
15247:
15248: Used in course context to determine if current file was uploaded to
15249: the course (i.e., would be found in /userfiles/docs on the course's
15250: homeserver.
15251:
15252: input: 3 args -- filename (decluttered), course number and course domain.
15253: output: boolean -- 1 if file was uploaded.
15254:
15255: =back
15256:
15257: =head2 Storing/Retreiving Data
15258:
15259: =over 4
15260:
15261: =item *
15262:
15263: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15264: permanently for this url; hashref needs to be given and should be a \%hashname;
15265: the remaining args aren't required and if they aren't passed or are '' they will
15266: be derived from the env (with the exception of $laststore, which is an
15267: optional arg used when a user's submission is stored in grading).
15268: $laststore is $version=$timestamp, where $version is the most recent version
15269: number retrieved for the corresponding $symb in the $namespace db file, and
15270: $timestamp is the timestamp for that transaction (UNIX time).
15271: $laststore is currently only passed when cstore() is called by
15272: structuretags::finalize_storage().
15273:
15274: =item *
15275:
15276: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15277: but uses critical subroutine
15278:
15279: =item *
15280:
15281: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15282: all args are optional
15283:
15284: =item *
15285:
15286: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15287: dumps the complete (or key matching regexp) namespace into a hash
15288: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15289: normally &store()ed into
15290:
15291: $range should be either an integer '100' (give me the first 100
15292: matching records)
15293: or be two integers sperated by a - with no spaces
15294: '30-50' (give me the 30th through the 50th matching
15295: records)
15296:
15297:
15298: =item *
15299:
15300: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15301: replaces a &store() version of data with a replacement set of data
15302: for a particular resource in a namespace passed in the $storehash hash
15303: reference. If $tolog is true, the transaction is logged in the courselog
15304: with an action=PUTSTORE.
15305:
15306: =item *
15307:
15308: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15309: works very similar to store/cstore, but all data is stored in a
15310: temporary location and can be reset using tmpreset, $storehash should
15311: be a hash reference, returns nothing on success
15312:
15313: =item *
15314:
15315: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15316: similar to restore, but all data is stored in a temporary location and
15317: can be reset using tmpreset. Returns a hash of values on success,
15318: error string otherwise.
15319:
15320: =item *
15321:
15322: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15323: deltes all keys for $symb form the temporary storage hash.
15324:
15325: =item *
15326:
15327: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15328: reference filled in from namesp ($udom and $uname are optional)
15329:
15330: =item *
15331:
15332: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15333: namesp ($udom and $uname are optional)
15334:
15335: =item *
15336:
15337: dump($namespace,$udom,$uname,$regexp,$range) :
15338: dumps the complete (or key matching regexp) namespace into a hash
15339: ($udom, $uname, $regexp, $range are optional)
15340:
15341: $range should be either an integer '100' (give me the first 100
15342: matching records)
15343: or be two integers sperated by a - with no spaces
15344: '30-50' (give me the 30th through the 50th matching
15345: records)
15346: =item *
15347:
15348: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15349: $store can be a scalar, an array reference, or if the amount to be
15350: incremented is > 1, a hash reference.
15351:
15352: ($udom and $uname are optional)
15353:
15354: =item *
15355:
15356: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15357: ($udom and $uname are optional)
15358:
15359: =item *
15360:
15361: cput($namespace,$storehash,$udom,$uname) : critical put
15362: ($udom and $uname are optional)
15363:
15364: =item *
15365:
15366: newput($namespace,$storehash,$udom,$uname) :
15367:
15368: Attempts to store the items in the $storehash, but only if they don't
15369: currently exist, if this succeeds you can be certain that you have
15370: successfully created a new key value pair in the $namespace db.
15371:
15372:
15373: Args:
15374: $namespace: name of database to store values to
15375: $storehash: hashref to store to the db
15376: $udom: (optional) domain of user containing the db
15377: $uname: (optional) name of user caontaining the db
15378:
15379: Returns:
15380: 'ok' -> succeeded in storing all keys of $storehash
15381: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15382: least <key> already existed in the db (other
15383: requested keys may also already exist)
15384: 'error: <msg>' -> unable to tie the DB or other error occurred
15385: 'con_lost' -> unable to contact request server
15386: 'refused' -> action was not allowed by remote machine
15387:
15388:
15389: =item *
15390:
15391: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15392: reference filled in from namesp (encrypts the return communication)
15393: ($udom and $uname are optional)
15394:
15395: =item *
15396:
15397: log($udom,$name,$home,$message) : write to permanent log for user; use
15398: critical subroutine
15399:
15400: =item *
15401:
15402: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15403: array reference filled in from namespace found in domain level on either
15404: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15405:
15406: =item *
15407:
15408: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15409: domain level either on specified domain server ($uhome) or primary domain
15410: server ($udom and $uhome are optional)
15411:
15412: =item *
15413:
15414: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15415: for: authentication, language, quotas, timezone, date locale, and portal URL in
15416: the target domain.
15417:
15418: May also include additional key => value pairs for the following groups:
15419:
15420: =over
15421:
15422: =item
15423: disk quotas (MB allocated by default to portfolios and authoring spaces).
15424:
15425: =over
15426:
15427: =item defaultquota, authorquota
15428:
15429: =back
15430:
15431: =item
15432: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15433: portfolio for users).
15434:
15435: =over
15436:
15437: =item
15438: aboutme, blog, webdav, portfolio
15439:
15440: =back
15441:
15442: =item
15443: requestcourses: ability to request courses, and how requests are processed.
15444:
15445: =over
15446:
15447: =item
15448: official, unofficial, community, textbook, placement
15449:
15450: =back
15451:
15452: =item
15453: inststatus: types of institutional affiliation, and order in which they are displayed.
15454:
15455: =over
15456:
15457: =item
15458: inststatustypes, inststatusorder, inststatusguest
15459:
15460: =back
15461:
15462: =item
15463: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15464: for course's uploaded content.
15465:
15466: =over
15467:
15468: =item
15469: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15470: communityquota, textbookquota, placementquota
15471:
15472: =back
15473:
15474: =item
15475: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15476: on your servers.
15477:
15478: =over
15479:
15480: =item
15481: remotesessions, hostedsessions
15482:
15483: =back
15484:
15485: =back
15486:
15487: In cases where a domain coordinator has never used the "Set Domain Configuration"
15488: utility to create a configuration.db file on a domain's primary library server
15489: only the following domain defaults: auth_def, auth_arg_def, lang_def
15490: -- corresponding values are authentication type (internal, krb4, krb5,
15491: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15492: will be available. Values are retrieved from cache (if current), unless the
15493: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15494: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15495:
15496: Typical usage:
15497:
15498: %domdefaults = &get_domain_defaults($target_domain);
15499:
15500: =back
15501:
15502: =head2 Network Status Functions
15503:
15504: =over 4
15505:
15506: =item *
15507:
15508: dirlist() : return directory list based on URI (first arg).
15509:
15510: Inputs: 1 required, 5 optional.
15511:
15512: =over
15513:
15514: =item
15515: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15516:
15517: =item
15518: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15519:
15520: =item
15521: $username - username of user/course to be listed. Extracted from $uri if absent.
15522:
15523: =item
15524: $getpropath - boolean: 1 if prepend path using &propath().
15525:
15526: =item
15527: $getuserdir - boolean: 1 if prepend path for "userfiles".
15528:
15529: =item
15530: $alternateRoot - path to prepend in place of path from $uri.
15531:
15532: =back
15533:
15534: Returns: Array of up to two items.
15535:
15536: =over
15537:
15538: a reference to an array of files/subdirectories
15539:
15540: =over
15541:
15542: Each element in the array of files/subdirectories is a & separated list of
15543: item name and the result of running stat on the item. If dirlist was requested
15544: for a file instead of a directory, the item name will be ''. For a directory
15545: listing, if the item is a metadata file, the element will end &N&M
15546: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15547: default copyright set (1).
15548:
15549: =back
15550:
15551: a scalar containing error condition (if encountered).
15552:
15553: =over
15554:
15555: =item
15556: no_host (no homeserver identified for $username:$domain).
15557:
15558: =item
15559: no_such_host (server contacted for listing not identified as valid host).
15560:
15561: =item
15562: con_lost (connection to remote server failed).
15563:
15564: =item
15565: refused (invalid $username:$domain received on lond side).
15566:
15567: =item
15568: no_such_dir (directory at specified path on lond side does not exist).
15569:
15570: =item
15571: empty (directory at specified path on lond side is empty).
15572:
15573: =over
15574:
15575: This is currently not encountered because the &ls3, &ls2,
15576: &ls (_handler) routines on the lond side do not filter out
15577: . and .. from a directory listing.
15578:
15579: =back
15580:
15581: =back
15582:
15583: =back
15584:
15585: =item *
15586:
15587: spareserver() : find server with least workload from spare.tab
15588:
15589:
15590: =item *
15591:
15592: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15593: if there is no corresponding loncapa host.
15594:
15595: =back
15596:
15597:
15598: =head2 Apache Request
15599:
15600: =over 4
15601:
15602: =item *
15603:
15604: ssi($url,%hash) : server side include, does a complete request cycle on url to
15605: localhost, posts hash
15606:
15607: =back
15608:
15609: =head2 Data to String to Data
15610:
15611: =over 4
15612:
15613: =item *
15614:
15615: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15616: and '&' separators, supports elements that are arrayrefs and hashrefs
15617:
15618: =item *
15619:
15620: hashref2str($hashref) : convert a hashref into a string complete with
15621: escaping and '=' and '&' separators, supports elements that are
15622: arrayrefs and hashrefs
15623:
15624: =item *
15625:
15626: arrayref2str($arrayref) : convert an arrayref into a string complete
15627: with escaping and '&' separators, supports elements that are arrayrefs
15628: and hashrefs
15629:
15630: =item *
15631:
15632: str2hash($string) : convert string to hash using unescaping and
15633: splitting on '=' and '&', supports elements that are arrayrefs and
15634: hashrefs
15635:
15636: =item *
15637:
15638: str2array($string) : convert string to hash using unescaping and
15639: splitting on '&', supports elements that are arrayrefs and hashrefs
15640:
15641: =back
15642:
15643: =head2 Logging Routines
15644:
15645:
15646: These routines allow one to make log messages in the lonnet.log and
15647: lonnet.perm logfiles.
15648:
15649: =over 4
15650:
15651: =item *
15652:
15653: logtouch() : make sure the logfile, lonnet.log, exists
15654:
15655: =item *
15656:
15657: logthis() : append message to the normal lonnet.log file, it gets
15658: preiodically rolled over and deleted.
15659:
15660: =item *
15661:
15662: logperm() : append a permanent message to lonnet.perm.log, this log
15663: file never gets deleted by any automated portion of the system, only
15664: messages of critical importance should go in here.
15665:
15666:
15667: =back
15668:
15669: =head2 General File Helper Routines
15670:
15671: =over 4
15672:
15673: =item *
15674:
15675: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15676: (a) files in /uploaded
15677: (i) If a local copy of the file exists -
15678: compares modification date of local copy with last-modified date for
15679: definitive version stored on home server for course. If local copy is
15680: stale, requests a new version from the home server and stores it.
15681: If the original has been removed from the home server, then local copy
15682: is unlinked.
15683: (ii) If local copy does not exist -
15684: requests the file from the home server and stores it.
15685:
15686: If $caller is 'uploadrep':
15687: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15688: for request for files originally uploaded via DOCS.
15689: - returns 'ok' if fresh local copy now available, -1 otherwise.
15690:
15691: Otherwise:
15692: This indicates a call from the content generation phase of the request.
15693: - returns the entire contents of the file or -1.
15694:
15695: (b) files in /res
15696: - returns the entire contents of a file or -1;
15697: it properly subscribes to and replicates the file if neccessary.
15698:
15699:
15700: =item *
15701:
15702: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15703: reference
15704:
15705: returns either a stat() list of data about the file or an empty list
15706: if the file doesn't exist or couldn't find out about it (connection
15707: problems or user unknown)
15708:
15709: =item *
15710:
15711: filelocation($dir,$file) : returns file system location of a file
15712: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15713: directory that relative $file lookups are to looked in ($dir of /a/dir
15714: and a file of ../bob will become /a/bob)
15715:
15716: =item *
15717:
15718: hreflocation($dir,$file) : returns file system location or a URL; same as
15719: filelocation except for hrefs
15720:
15721: =item *
15722:
15723: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15724: also removes beginning /home/httpd/html unless /priv/ follows it.
15725:
15726: =back
15727:
15728: =head2 Usererfile file routines (/uploaded*)
15729:
15730: =over 4
15731:
15732: =item *
15733:
15734: userfileupload(): main rotine for putting a file in a user or course's
15735: filespace, arguments are,
15736:
15737: formname - required - this is the name of the element in $env where the
15738: filename, and the contents of the file to create/modifed exist
15739: the filename is in $env{'form.'.$formname.'.filename'} and the
15740: contents of the file is located in $env{'form.'.$formname}
15741: context - if coursedoc, store the file in the course of the active role
15742: of the current user;
15743: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15744: if 'canceloverwrite': delete file in tmp/overwrites directory
15745: subdir - required - subdirectory to put the file in under ../userfiles/
15746: if undefined, it will be placed in "unknown"
15747:
15748: (This routine calls clean_filename() to remove any dangerous
15749: characters from the filename, and then calls finuserfileupload() to
15750: complete the transaction)
15751:
15752: returns either the url of the uploaded file (/uploaded/....) if successful
15753: and /adm/notfound.html if unsuccessful
15754:
15755: =item *
15756:
15757: clean_filename(): routine for cleaing a filename up for storage in
15758: userfile space, argument is:
15759:
15760: filename - proposed filename
15761:
15762: returns: the new clean filename
15763:
15764: =item *
15765:
15766: finishuserfileupload(): routine that creates and sends the file to
15767: userspace, probably shouldn't be called directly
15768:
15769: docuname: username or courseid of destination for the file
15770: docudom: domain of user/course of destination for the file
15771: formname: same as for userfileupload()
15772: fname: filename (including subdirectories) for the file
15773: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15774: allfiles: reference to hash used to store objects found by parser
15775: codebase: reference to hash used for codebases of java objects found by parser
15776: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15777: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15778: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15779: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15780: context: if 'overwrite', will move the uploaded file from its temporary location to
15781: userfiles to facilitate overwriting a previously uploaded file with same name.
15782: mimetype: reference to scalar to accommodate mime type determined
15783: from File::MMagic if $parser = parse.
15784:
15785: returns either the url of the uploaded file (/uploaded/....) if successful
15786: and /adm/notfound.html if unsuccessful (or an error message if context
15787: was 'overwrite').
15788:
15789:
15790: =item *
15791:
15792: renameuserfile(): renames an existing userfile to a new name
15793:
15794: Args:
15795: docuname: username or courseid of destination for the file
15796: docudom: domain of user/course of destination for the file
15797: old: current file name (including any subdirs under userfiles)
15798: new: desired file name (including any subdirs under userfiles)
15799:
15800: =item *
15801:
15802: mkdiruserfile(): creates a directory is a userfiles dir
15803:
15804: Args:
15805: docuname: username or courseid of destination for the file
15806: docudom: domain of user/course of destination for the file
15807: dir: dir to create (including any subdirs under userfiles)
15808:
15809: =item *
15810:
15811: removeuserfile(): removes a file that exists in userfiles
15812:
15813: Args:
15814: docuname: username or courseid of destination for the file
15815: docudom: domain of user/course of destination for the file
15816: fname: filname to delete (including any subdirs under userfiles)
15817:
15818: =item *
15819:
15820: removeuploadedurl(): convience function for removeuserfile()
15821:
15822: Args:
15823: url: a full /uploaded/... url to delete
15824:
15825: =item *
15826:
15827: get_portfile_permissions():
15828: Args:
15829: domain: domain of user or course contain the portfolio files
15830: user: name of user or num of course contain the portfolio files
15831: Returns:
15832: hashref of a dump of the proper file_permissions.db
15833:
15834:
15835: =item *
15836:
15837: get_access_controls():
15838:
15839: Args:
15840: current_permissions: the hash ref returned from get_portfile_permissions()
15841: group: (optional) the group you want the files associated with
15842: file: (optional) the file you want access info on
15843:
15844: Returns:
15845: a hash (keys are file names) of hashes containing
15846: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15847: values are XML containing access control settings (see below)
15848:
15849: Internal notes:
15850:
15851: access controls are stored in file_permissions.db as key=value pairs.
15852: key -> path to file/file_name\0uniqueID:scope_end_start
15853: where scope -> public,guest,course,group,domains or users.
15854: end -> UNIX time for end of access (0 -> no end date)
15855: start -> UNIX time for start of access
15856:
15857: value -> XML description of access control
15858: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15859: <start></start>
15860: <end></end>
15861:
15862: <password></password> for scope type = guest
15863:
15864: <domain></domain> for scope type = course or group
15865: <number></number>
15866: <roles id="">
15867: <role></role>
15868: <access></access>
15869: <section></section>
15870: <group></group>
15871: </roles>
15872:
15873: <dom></dom> for scope type = domains
15874:
15875: <users> for scope type = users
15876: <user>
15877: <uname></uname>
15878: <udom></udom>
15879: </user>
15880: </users>
15881: </scope>
15882:
15883: Access data is also aggregated for each file in an additional key=value pair:
15884: key -> path to file/file_name\0accesscontrol
15885: value -> reference to hash
15886: hash contains key = value pairs
15887: where key = uniqueID:scope_end_start
15888: value = UNIX time record was last updated
15889:
15890: Used to improve speed of look-ups of access controls for each file.
15891:
15892: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15893:
15894: =item *
15895:
15896: modify_access_controls():
15897:
15898: Modifies access controls for a portfolio file
15899: Args
15900: 1. file name
15901: 2. reference to hash of required changes,
15902: 3. domain
15903: 4. username
15904: where domain,username are the domain of the portfolio owner
15905: (either a user or a course)
15906:
15907: Returns:
15908: 1. result of additions or updates ('ok' or 'error', with error message).
15909: 2. result of deletions ('ok' or 'error', with error message).
15910: 3. reference to hash of any new or updated access controls.
15911: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15912: key = integer (inbound ID)
15913: value = uniqueID
15914:
15915: =item *
15916:
15917: get_timebased_id():
15918:
15919: Attempts to get a unique timestamp-based suffix for use with items added to a
15920: course via the Course Editor (e.g., folders, composite pages,
15921: group bulletin boards).
15922:
15923: Args: (first three required; six others optional)
15924:
15925: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15926: docssequence, or name of group
15927:
15928: 2. keyid (alphanumeric): name of temporary locking key in hash,
15929: e.g., num, boardids
15930:
15931: 3. namespace: name of gdbm file used to store suffixes already assigned;
15932: file will be named nohist_namespace.db
15933:
15934: 4. cdom: domain of course; default is current course domain from %env
15935:
15936: 5. cnum: course number; default is current course number from %env
15937:
15938: 6. idtype: set to concat if an additional digit is to be appended to the
15939: unix timestamp to form the suffix, if the plain timestamp is already
15940: in use. Default is to not do this, but simply increment the unix
15941: timestamp by 1 until a unique key is obtained.
15942:
15943: 7. who: holder of locking key; defaults to user:domain for user.
15944:
15945: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15946: retrying); default is 3.
15947:
15948: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15949:
15950: Returns:
15951:
15952: 1. suffix obtained (numeric)
15953:
15954: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15955:
15956: 3. error: contains (localized) error message if an error occurred.
15957:
15958:
15959: =back
15960:
15961: =head2 HTTP Helper Routines
15962:
15963: =over 4
15964:
15965: =item *
15966:
15967: escape() : unpack non-word characters into CGI-compatible hex codes
15968:
15969: =item *
15970:
15971: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15972:
15973: =back
15974:
15975: =head1 PRIVATE SUBROUTINES
15976:
15977: =head2 Underlying communication routines (Shouldn't call)
15978:
15979: =over 4
15980:
15981: =item *
15982:
15983: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15984:
15985: =item *
15986:
15987: reply() : uses subreply to send a message to remote machine, logs all failures
15988:
15989: =item *
15990:
15991: critical() : passes a critical message to another server; if cannot
15992: get through then place message in connection buffer directory and
15993: returns con_delayed, if incapable of saving message, returns
15994: con_failed
15995:
15996: =item *
15997:
15998: reconlonc() : tries to reconnect lonc client processes.
15999:
16000: =back
16001:
16002: =head2 Resource Access Logging
16003:
16004: =over 4
16005:
16006: =item *
16007:
16008: flushcourselogs() : flush (save) buffer logs and access logs
16009:
16010: =item *
16011:
16012: courselog($what) : save message for course in hash
16013:
16014: =item *
16015:
16016: courseacclog($what) : save message for course using &courselog(). Perform
16017: special processing for specific resource types (problems, exams, quizzes, etc).
16018:
16019: =item *
16020:
16021: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16022: as a PerlChildExitHandler
16023:
16024: =back
16025:
16026: =head2 Other
16027:
16028: =over 4
16029:
16030: =item *
16031:
16032: symblist($mapname,%newhash) : update symbolic storage links
16033:
16034: =back
16035:
16036: =cut
16037:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl