1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1395 2018/12/08 17:38:47 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|othcoau|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: $possinc{$intcalldom} = 1;
1767: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1768: }
1769: }
1770: if (keys(%possexc)) {
1771: if (keys(%possinc)) {
1772: foreach my $key (sort(keys(%possexc))) {
1773: next if ($key eq $intcalldom);
1774: unless ($possinc{$key}) {
1775: push(@allexc,$key);
1776: }
1777: }
1778: } else {
1779: @allexc = sort(keys(%possexc));
1780: }
1781: }
1782: if (keys(%possinc)) {
1783: $possinc{$intcalldom} = 1;
1784: @allinc = sort(keys(%possinc));
1785: }
1786: if ((@allexc > 0) || (@allinc > 0)) {
1787: my %doms_by_intdom;
1788: my %allintdoms = &all_host_intdom();
1789: my %alldoms = &all_host_domain();
1790: foreach my $key (%allintdoms) {
1791: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1792: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1793: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1794: }
1795: } else {
1796: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1797: }
1798: }
1799: foreach my $exc (@allexc) {
1800: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1801: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1802: }
1803: }
1804: foreach my $inc (@allinc) {
1805: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1806: push(@{$trusted},@{$doms_by_intdom{$inc}});
1807: }
1808: }
1809: }
1810: }
1811: return ($trusted,$untrusted);
1812: }
1813:
1814: sub will_trust {
1815: my ($cmdtype,$domain,$possdom) = @_;
1816: return 1 if ($domain eq $possdom);
1817: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1818: my $willtrust;
1819: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1820: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1821: $willtrust = 1;
1822: }
1823: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1824: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1825: $willtrust = 1;
1826: }
1827: } else {
1828: $willtrust = 1;
1829: }
1830: return $willtrust;
1831: }
1832:
1833: # ---------------------- Find the homebase for a user from domain's lib servers
1834:
1835: my %homecache;
1836: sub homeserver {
1837: my ($uname,$udom,$ignoreBadCache)=@_;
1838: my $index="$uname:$udom";
1839:
1840: if (exists($homecache{$index})) { return $homecache{$index}; }
1841:
1842: my %servers = &get_servers($udom,'library');
1843: foreach my $tryserver (keys(%servers)) {
1844: next if ($ignoreBadCache ne 'true' &&
1845: exists($badServerCache{$tryserver}));
1846:
1847: my $answer=reply("home:$udom:$uname",$tryserver);
1848: if ($answer eq 'found') {
1849: delete($badServerCache{$tryserver});
1850: return $homecache{$index}=$tryserver;
1851: } elsif ($answer eq 'no_host') {
1852: $badServerCache{$tryserver}=1;
1853: }
1854: }
1855: return 'no_host';
1856: }
1857:
1858: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1859:
1860: sub idget {
1861: my ($udom,$idsref,$namespace)=@_;
1862: my %returnhash=();
1863: my @ids=();
1864: if (ref($idsref) eq 'ARRAY') {
1865: @ids = @{$idsref};
1866: } else {
1867: return %returnhash;
1868: }
1869: if ($namespace eq '') {
1870: $namespace = 'ids';
1871: }
1872:
1873: my %servers = &get_servers($udom,'library');
1874: foreach my $tryserver (keys(%servers)) {
1875: my $idlist=join('&', map { &escape($_); } @ids);
1876: if ($namespace eq 'ids') {
1877: $idlist=~tr/A-Z/a-z/;
1878: }
1879: my $reply;
1880: if ($namespace eq 'ids') {
1881: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1882: } else {
1883: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1884: }
1885: my @answer=();
1886: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1887: @answer=split(/\&/,$reply);
1888: } ;
1889: my $i;
1890: for ($i=0;$i<=$#ids;$i++) {
1891: if ($answer[$i]) {
1892: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1893: }
1894: }
1895: }
1896: return %returnhash;
1897: }
1898:
1899: # ------------------------------------- Find the IDs behind a list of usernames
1900:
1901: sub idrget {
1902: my ($udom,@unames)=@_;
1903: my %returnhash=();
1904: foreach my $uname (@unames) {
1905: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1906: }
1907: return %returnhash;
1908: }
1909:
1910: # Store away a list of names and associated student/employee IDs or clicker IDs
1911:
1912: sub idput {
1913: my ($udom,$idsref,$uhom,$namespace)=@_;
1914: my %servers=();
1915: my %ids=();
1916: my %byid = ();
1917: if (ref($idsref) eq 'HASH') {
1918: %ids=%{$idsref};
1919: }
1920: if ($namespace eq '') {
1921: $namespace = 'ids';
1922: }
1923: foreach my $uname (keys(%ids)) {
1924: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1925: if ($uhom eq '') {
1926: $uhom=&homeserver($uname,$udom);
1927: }
1928: if ($uhom ne 'no_host') {
1929: my $esc_unam=&escape($uname);
1930: if ($namespace eq 'ids') {
1931: my $id=&escape($ids{$uname});
1932: $id=~tr/A-Z/a-z/;
1933: my $esc_unam=&escape($uname);
1934: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1935: } else {
1936: my @currids = split(/,/,$ids{$uname});
1937: foreach my $id (@currids) {
1938: $byid{$uhom}{$id} .= $uname.',';
1939: }
1940: }
1941: }
1942: }
1943: if ($namespace eq 'clickers') {
1944: foreach my $server (keys(%byid)) {
1945: if (ref($byid{$server}) eq 'HASH') {
1946: foreach my $id (keys(%{$byid{$server}})) {
1947: $byid{$server} =~ s/,$//;
1948: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1949: }
1950: }
1951: }
1952: }
1953: foreach my $server (keys(%servers)) {
1954: $servers{$server} =~ s/\&$//;
1955: if ($namespace eq 'ids') {
1956: &critical('idput:'.$udom.':'.$servers{$server},$server);
1957: } else {
1958: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1959: }
1960: }
1961: }
1962:
1963: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1964:
1965: sub iddel {
1966: my ($udom,$idshashref,$uhome,$namespace)=@_;
1967: my %result=();
1968: my %ids=();
1969: my %byid = ();
1970: if (ref($idshashref) eq 'HASH') {
1971: %ids=%{$idshashref};
1972: } else {
1973: return %result;
1974: }
1975: if ($namespace eq '') {
1976: $namespace = 'ids';
1977: }
1978: my %servers=();
1979: while (my ($id,$unamestr) = each(%ids)) {
1980: if ($namespace eq 'ids') {
1981: my $uhom = $uhome;
1982: if ($uhom eq '') {
1983: $uhom=&homeserver($unamestr,$udom);
1984: }
1985: if ($uhom ne 'no_host') {
1986: $servers{$uhom}.='&'.&escape($id);
1987: }
1988: } else {
1989: my @curritems = split(/,/,$ids{$id});
1990: foreach my $uname (@curritems) {
1991: my $uhom = $uhome;
1992: if ($uhom eq '') {
1993: $uhom=&homeserver($uname,$udom);
1994: }
1995: if ($uhom ne 'no_host') {
1996: $byid{$uhom}{$id} .= $uname.',';
1997: }
1998: }
1999: }
2000: }
2001: if ($namespace eq 'clickers') {
2002: foreach my $server (keys(%byid)) {
2003: if (ref($byid{$server}) eq 'HASH') {
2004: foreach my $id (keys(%{$byid{$server}})) {
2005: $byid{$server}{$id} =~ s/,$//;
2006: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2007: }
2008: }
2009: }
2010: }
2011: foreach my $server (keys(%servers)) {
2012: $servers{$server} =~ s/\&$//;
2013: if ($namespace eq 'ids') {
2014: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2015: } elsif ($namespace eq 'clickers') {
2016: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2017: }
2018: }
2019: return %result;
2020: }
2021:
2022: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2023:
2024: sub updateclickers {
2025: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2026: my %clickers;
2027: if (ref($idshashref) eq 'HASH') {
2028: %clickers=%{$idshashref};
2029: } else {
2030: return;
2031: }
2032: my $items='';
2033: foreach my $item (keys(%clickers)) {
2034: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2035: }
2036: $items=~s/\&$//;
2037: my $request = "updateclickers:$udom:$action:$items";
2038: if ($critical) {
2039: return &critical($request,$uhome);
2040: } else {
2041: return &reply($request,$uhome);
2042: }
2043: }
2044:
2045: # ------------------------------dump from db file owned by domainconfig user
2046: sub dump_dom {
2047: my ($namespace, $udom, $regexp) = @_;
2048:
2049: $udom ||= $env{'user.domain'};
2050:
2051: return () unless $udom;
2052:
2053: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2054: }
2055:
2056: # ------------------------------------------ get items from domain db files
2057:
2058: sub get_dom {
2059: my ($namespace,$storearr,$udom,$uhome)=@_;
2060: return if ($udom eq 'public');
2061: my $items='';
2062: foreach my $item (@$storearr) {
2063: $items.=&escape($item).'&';
2064: }
2065: $items=~s/\&$//;
2066: if (!$udom) {
2067: $udom=$env{'user.domain'};
2068: return if ($udom eq 'public');
2069: if (defined(&domain($udom,'primary'))) {
2070: $uhome=&domain($udom,'primary');
2071: } else {
2072: undef($uhome);
2073: }
2074: } else {
2075: if (!$uhome) {
2076: if (defined(&domain($udom,'primary'))) {
2077: $uhome=&domain($udom,'primary');
2078: }
2079: }
2080: }
2081: if ($udom && $uhome && ($uhome ne 'no_host')) {
2082: my $rep;
2083: if ($namespace =~ /^enc/) {
2084: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2085: } else {
2086: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2087: }
2088: my %returnhash;
2089: if ($rep eq '' || $rep =~ /^error: 2 /) {
2090: return %returnhash;
2091: }
2092: my @pairs=split(/\&/,$rep);
2093: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2094: return @pairs;
2095: }
2096: my $i=0;
2097: foreach my $item (@$storearr) {
2098: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2099: $i++;
2100: }
2101: return %returnhash;
2102: } else {
2103: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2104: }
2105: }
2106:
2107: # -------------------------------------------- put items in domain db files
2108:
2109: sub put_dom {
2110: my ($namespace,$storehash,$udom,$uhome)=@_;
2111: if (!$udom) {
2112: $udom=$env{'user.domain'};
2113: if (defined(&domain($udom,'primary'))) {
2114: $uhome=&domain($udom,'primary');
2115: } else {
2116: undef($uhome);
2117: }
2118: } else {
2119: if (!$uhome) {
2120: if (defined(&domain($udom,'primary'))) {
2121: $uhome=&domain($udom,'primary');
2122: }
2123: }
2124: }
2125: if ($udom && $uhome && ($uhome ne 'no_host')) {
2126: my $items='';
2127: foreach my $item (keys(%$storehash)) {
2128: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2129: }
2130: $items=~s/\&$//;
2131: if ($namespace =~ /^enc/) {
2132: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2133: } else {
2134: return &reply("putdom:$udom:$namespace:$items",$uhome);
2135: }
2136: } else {
2137: &logthis("put_dom failed - no homeserver and/or domain");
2138: }
2139: }
2140:
2141: # --------------------- newput for items in db file owned by domainconfig user
2142: sub newput_dom {
2143: my ($namespace,$storehash,$udom) = @_;
2144: my $result;
2145: if (!$udom) {
2146: $udom=$env{'user.domain'};
2147: }
2148: if ($udom) {
2149: my $uname = &get_domainconfiguser($udom);
2150: $result = &newput($namespace,$storehash,$udom,$uname);
2151: }
2152: return $result;
2153: }
2154:
2155: # --------------------- delete for items in db file owned by domainconfig user
2156: sub del_dom {
2157: my ($namespace,$storearr,$udom)=@_;
2158: if (ref($storearr) eq 'ARRAY') {
2159: if (!$udom) {
2160: $udom=$env{'user.domain'};
2161: }
2162: if ($udom) {
2163: my $uname = &get_domainconfiguser($udom);
2164: return &del($namespace,$storearr,$udom,$uname);
2165: }
2166: }
2167: }
2168:
2169: # ----------------------------------construct domainconfig user for a domain
2170: sub get_domainconfiguser {
2171: my ($udom) = @_;
2172: return $udom.'-domainconfig';
2173: }
2174:
2175: sub retrieve_inst_usertypes {
2176: my ($udom) = @_;
2177: my (%returnhash,@order);
2178: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2179: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2180: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2181: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2182: } else {
2183: if (defined(&domain($udom,'primary'))) {
2184: my $uhome=&domain($udom,'primary');
2185: my $rep=&reply("inst_usertypes:$udom",$uhome);
2186: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2187: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2188: return (\%returnhash,\@order);
2189: }
2190: my ($hashitems,$orderitems) = split(/:/,$rep);
2191: my @pairs=split(/\&/,$hashitems);
2192: foreach my $item (@pairs) {
2193: my ($key,$value)=split(/=/,$item,2);
2194: $key = &unescape($key);
2195: next if ($key =~ /^error: 2 /);
2196: $returnhash{$key}=&thaw_unescape($value);
2197: }
2198: my @esc_order = split(/\&/,$orderitems);
2199: foreach my $item (@esc_order) {
2200: push(@order,&unescape($item));
2201: }
2202: } else {
2203: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2204: }
2205: return (\%returnhash,\@order);
2206: }
2207: }
2208:
2209: sub is_domainimage {
2210: my ($url) = @_;
2211: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2212: if (&domain($1) ne '') {
2213: return '1';
2214: }
2215: }
2216: return;
2217: }
2218:
2219: sub inst_directory_query {
2220: my ($srch) = @_;
2221: my $udom = $srch->{'srchdomain'};
2222: my %results;
2223: my $homeserver = &domain($udom,'primary');
2224: my $outcome;
2225: if ($homeserver ne '') {
2226: unless ($homeserver eq $perlvar{'lonHostID'}) {
2227: if ($srch->{'srchby'} eq 'email') {
2228: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2229: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2230: if (($major eq '' && $minor eq '') || ($major < 2) ||
2231: (($major == 2) && ($minor < 12))) {
2232: return;
2233: }
2234: }
2235: }
2236: my $queryid=&reply("querysend:instdirsearch:".
2237: &escape($srch->{'srchby'}).':'.
2238: &escape($srch->{'srchterm'}).':'.
2239: &escape($srch->{'srchtype'}),$homeserver);
2240: my $host=&hostname($homeserver);
2241: if ($queryid !~/^\Q$host\E\_/) {
2242: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2243: return;
2244: }
2245: my $response = &get_query_reply($queryid);
2246: my $maxtries = 5;
2247: my $tries = 1;
2248: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2249: $response = &get_query_reply($queryid);
2250: $tries ++;
2251: }
2252:
2253: if (!&error($response) && $response ne 'refused') {
2254: if ($response eq 'unavailable') {
2255: $outcome = $response;
2256: } else {
2257: $outcome = 'ok';
2258: my @matches = split(/\n/,$response);
2259: foreach my $match (@matches) {
2260: my ($key,$value) = split(/=/,$match);
2261: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2262: }
2263: }
2264: }
2265: }
2266: return ($outcome,%results);
2267: }
2268:
2269: sub usersearch {
2270: my ($srch) = @_;
2271: my $dom = $srch->{'srchdomain'};
2272: my %results;
2273: my %libserv = &all_library();
2274: my $query = 'usersearch';
2275: foreach my $tryserver (keys(%libserv)) {
2276: if (&host_domain($tryserver) eq $dom) {
2277: unless ($tryserver eq $perlvar{'lonHostID'}) {
2278: if ($srch->{'srchby'} eq 'email') {
2279: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2280: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2281: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2282: (($major == 2) && ($minor < 12)));
2283: }
2284: }
2285: my $host=&hostname($tryserver);
2286: my $queryid=
2287: &reply("querysend:".&escape($query).':'.
2288: &escape($srch->{'srchby'}).':'.
2289: &escape($srch->{'srchtype'}).':'.
2290: &escape($srch->{'srchterm'}),$tryserver);
2291: if ($queryid !~/^\Q$host\E\_/) {
2292: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2293: next;
2294: }
2295: my $reply = &get_query_reply($queryid);
2296: my $maxtries = 1;
2297: my $tries = 1;
2298: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2299: $reply = &get_query_reply($queryid);
2300: $tries ++;
2301: }
2302: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2303: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2304: } else {
2305: my @matches;
2306: if ($reply =~ /\n/) {
2307: @matches = split(/\n/,$reply);
2308: } else {
2309: @matches = split(/\&/,$reply);
2310: }
2311: foreach my $match (@matches) {
2312: my ($uname,$udom,%userhash);
2313: foreach my $entry (split(/:/,$match)) {
2314: my ($key,$value) =
2315: map {&unescape($_);} split(/=/,$entry);
2316: $userhash{$key} = $value;
2317: if ($key eq 'username') {
2318: $uname = $value;
2319: } elsif ($key eq 'domain') {
2320: $udom = $value;
2321: }
2322: }
2323: $results{$uname.':'.$udom} = \%userhash;
2324: }
2325: }
2326: }
2327: }
2328: return %results;
2329: }
2330:
2331: sub get_instuser {
2332: my ($udom,$uname,$id) = @_;
2333: my $homeserver = &domain($udom,'primary');
2334: my ($outcome,%results);
2335: if ($homeserver ne '') {
2336: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2337: &escape($id).':'.&escape($udom),$homeserver);
2338: my $host=&hostname($homeserver);
2339: if ($queryid !~/^\Q$host\E\_/) {
2340: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2341: return;
2342: }
2343: my $response = &get_query_reply($queryid);
2344: my $maxtries = 5;
2345: my $tries = 1;
2346: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2347: $response = &get_query_reply($queryid);
2348: $tries ++;
2349: }
2350: if (!&error($response) && $response ne 'refused') {
2351: if ($response eq 'unavailable') {
2352: $outcome = $response;
2353: } else {
2354: $outcome = 'ok';
2355: my @matches = split(/\n/,$response);
2356: foreach my $match (@matches) {
2357: my ($key,$value) = split(/=/,$match);
2358: $results{&unescape($key)} = &thaw_unescape($value);
2359: }
2360: }
2361: }
2362: }
2363: my %userinfo;
2364: if (ref($results{$uname}) eq 'HASH') {
2365: %userinfo = %{$results{$uname}};
2366: }
2367: return ($outcome,%userinfo);
2368: }
2369:
2370: sub get_multiple_instusers {
2371: my ($udom,$users,$caller) = @_;
2372: my ($outcome,$results);
2373: if (ref($users) eq 'HASH') {
2374: my $count = keys(%{$users});
2375: my $requested = &freeze_escape($users);
2376: my $homeserver = &domain($udom,'primary');
2377: if ($homeserver ne '') {
2378: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2379: my $host=&hostname($homeserver);
2380: if ($queryid !~/^\Q$host\E\_/) {
2381: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2382: ' for host: '.$homeserver.'in domain '.$udom);
2383: return ($outcome,$results);
2384: }
2385: my $response = &get_query_reply($queryid);
2386: my $maxtries = 5;
2387: if ($count > 100) {
2388: $maxtries = 1+int($count/20);
2389: }
2390: my $tries = 1;
2391: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2392: $response = &get_query_reply($queryid);
2393: $tries ++;
2394: }
2395: if ($response eq '') {
2396: $results = {};
2397: foreach my $key (keys(%{$users})) {
2398: my ($uname,$id);
2399: if ($caller eq 'id') {
2400: $id = $key;
2401: } else {
2402: $uname = $key;
2403: }
2404: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2405: $outcome = $resp;
2406: if ($resp eq 'ok') {
2407: %{$results} = (%{$results}, %info);
2408: } else {
2409: last;
2410: }
2411: }
2412: } elsif(!&error($response) && ($response ne 'refused')) {
2413: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2414: $outcome = $response;
2415: } else {
2416: ($outcome,my $userdata) = split(/=/,$response,2);
2417: if ($outcome eq 'ok') {
2418: $results = &thaw_unescape($userdata);
2419: }
2420: }
2421: }
2422: }
2423: }
2424: return ($outcome,$results);
2425: }
2426:
2427: sub inst_rulecheck {
2428: my ($udom,$uname,$id,$item,$rules) = @_;
2429: my %returnhash;
2430: if ($udom ne '') {
2431: if (ref($rules) eq 'ARRAY') {
2432: @{$rules} = map {&escape($_);} (@{$rules});
2433: my $rulestr = join(':',@{$rules});
2434: my $homeserver=&domain($udom,'primary');
2435: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2436: my $response;
2437: if ($item eq 'username') {
2438: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2439: ':'.&escape($uname).':'.$rulestr,
2440: $homeserver));
2441: } elsif ($item eq 'id') {
2442: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2443: ':'.&escape($id).':'.$rulestr,
2444: $homeserver));
2445: } elsif ($item eq 'selfcreate') {
2446: $response=&unescape(&reply('instselfcreatecheck:'.
2447: &escape($udom).':'.&escape($uname).
2448: ':'.$rulestr,$homeserver));
2449: }
2450: if ($response ne 'refused') {
2451: my @pairs=split(/\&/,$response);
2452: foreach my $item (@pairs) {
2453: my ($key,$value)=split(/=/,$item,2);
2454: $key = &unescape($key);
2455: next if ($key =~ /^error: 2 /);
2456: $returnhash{$key}=&thaw_unescape($value);
2457: }
2458: }
2459: }
2460: }
2461: }
2462: return %returnhash;
2463: }
2464:
2465: sub inst_userrules {
2466: my ($udom,$check) = @_;
2467: my (%ruleshash,@ruleorder);
2468: if ($udom ne '') {
2469: my $homeserver=&domain($udom,'primary');
2470: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2471: my $response;
2472: if ($check eq 'id') {
2473: $response=&reply('instidrules:'.&escape($udom),
2474: $homeserver);
2475: } elsif ($check eq 'email') {
2476: $response=&reply('instemailrules:'.&escape($udom),
2477: $homeserver);
2478: } else {
2479: $response=&reply('instuserrules:'.&escape($udom),
2480: $homeserver);
2481: }
2482: if (($response ne 'refused') && ($response ne 'error') &&
2483: ($response ne 'unknown_cmd') &&
2484: ($response ne 'no_such_host')) {
2485: my ($hashitems,$orderitems) = split(/:/,$response);
2486: my @pairs=split(/\&/,$hashitems);
2487: foreach my $item (@pairs) {
2488: my ($key,$value)=split(/=/,$item,2);
2489: $key = &unescape($key);
2490: next if ($key =~ /^error: 2 /);
2491: $ruleshash{$key}=&thaw_unescape($value);
2492: }
2493: my @esc_order = split(/\&/,$orderitems);
2494: foreach my $item (@esc_order) {
2495: push(@ruleorder,&unescape($item));
2496: }
2497: }
2498: }
2499: }
2500: return (\%ruleshash,\@ruleorder);
2501: }
2502:
2503: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2504:
2505: sub get_domain_defaults {
2506: my ($domain,$ignore_cache) = @_;
2507: return if (($domain eq '') || ($domain eq 'public'));
2508: my $cachetime = 60*60*24;
2509: unless ($ignore_cache) {
2510: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2511: if (defined($cached)) {
2512: if (ref($result) eq 'HASH') {
2513: return %{$result};
2514: }
2515: }
2516: }
2517: my %domdefaults;
2518: my %domconfig =
2519: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2520: 'requestcourses','inststatus',
2521: 'coursedefaults','usersessions',
2522: 'requestauthor','selfenrollment',
2523: 'coursecategories','ssl','autoenroll',
2524: 'trust','helpsettings'],$domain);
2525: my @coursetypes = ('official','unofficial','community','textbook','placement');
2526: if (ref($domconfig{'defaults'}) eq 'HASH') {
2527: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2528: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2529: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2530: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2531: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2532: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2533: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2534: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2535: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2536: } else {
2537: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2538: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2539: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2540: }
2541: if (ref($domconfig{'quotas'}) eq 'HASH') {
2542: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2543: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2544: } else {
2545: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2546: }
2547: my @usertools = ('aboutme','blog','webdav','portfolio');
2548: foreach my $item (@usertools) {
2549: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2550: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2551: }
2552: }
2553: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2554: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2555: }
2556: }
2557: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2558: foreach my $item ('official','unofficial','community','textbook','placement') {
2559: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2560: }
2561: }
2562: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2563: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2564: }
2565: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2566: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2567: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2568: }
2569: }
2570: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2571: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2572: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2573: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2574: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2575: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2576: }
2577: foreach my $type (@coursetypes) {
2578: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2579: unless ($type eq 'community') {
2580: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2581: }
2582: }
2583: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2584: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2585: }
2586: if ($domdefaults{'postsubmit'} eq 'on') {
2587: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2588: $domdefaults{$type.'postsubtimeout'} =
2589: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2590: }
2591: }
2592: }
2593: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2594: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2595: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2596: if (@clonecodes) {
2597: $domdefaults{'canclone'} = join('+',@clonecodes);
2598: }
2599: }
2600: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2601: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2602: }
2603: if ($domconfig{'coursedefaults'}{'texengine'}) {
2604: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2605: }
2606: }
2607: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2608: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2609: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2610: }
2611: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2612: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2613: }
2614: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2615: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2616: }
2617: }
2618: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2619: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2620: my @settings = ('types','registered','enroll_dates','access_dates','section',
2621: 'approval','limit');
2622: foreach my $type (@coursetypes) {
2623: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2624: my @mgrdc = ();
2625: foreach my $item (@settings) {
2626: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2627: push(@mgrdc,$item);
2628: }
2629: }
2630: if (@mgrdc) {
2631: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2632: }
2633: }
2634: }
2635: }
2636: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2637: foreach my $type (@coursetypes) {
2638: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2639: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2640: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2641: }
2642: }
2643: }
2644: }
2645: }
2646: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2647: $domdefaults{'catauth'} = 'std';
2648: $domdefaults{'catunauth'} = 'std';
2649: if ($domconfig{'coursecategories'}{'auth'}) {
2650: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2651: }
2652: if ($domconfig{'coursecategories'}{'unauth'}) {
2653: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2654: }
2655: }
2656: if (ref($domconfig{'ssl'}) eq 'HASH') {
2657: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2658: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2659: }
2660: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2661: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2662: }
2663: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2664: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2665: }
2666: }
2667: if (ref($domconfig{'trust'}) eq 'HASH') {
2668: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2669: foreach my $prefix (@prefixes) {
2670: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2671: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2672: }
2673: }
2674: }
2675: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2676: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2677: }
2678: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2679: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2680: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2681: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2682: }
2683: }
2684: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2685: return %domdefaults;
2686: }
2687:
2688: sub course_portal_url {
2689: my ($cnum,$cdom) = @_;
2690: my $chome = &homeserver($cnum,$cdom);
2691: my $hostname = &hostname($chome);
2692: my $protocol = $protocol{$chome};
2693: $protocol = 'http' if ($protocol ne 'https');
2694: my %domdefaults = &get_domain_defaults($cdom);
2695: my $firsturl;
2696: if ($domdefaults{'portal_def'}) {
2697: $firsturl = $domdefaults{'portal_def'};
2698: } else {
2699: $firsturl = $protocol.'://'.$hostname;
2700: }
2701: return $firsturl;
2702: }
2703:
2704: # --------------------------------------------------- Assign a key to a student
2705:
2706: sub assign_access_key {
2707: #
2708: # a valid key looks like uname:udom#comments
2709: # comments are being appended
2710: #
2711: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2712: $kdom=
2713: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2714: $knum=
2715: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2716: $cdom=
2717: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2718: $cnum=
2719: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2720: $udom=$env{'user.name'} unless (defined($udom));
2721: $uname=$env{'user.domain'} unless (defined($uname));
2722: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2723: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2724: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2725: # assigned to this person
2726: # - this should not happen,
2727: # unless something went wrong
2728: # the first time around
2729: # ready to assign
2730: $logentry=$1.'; '.$logentry;
2731: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2732: $kdom,$knum) eq 'ok') {
2733: # key now belongs to user
2734: my $envkey='key.'.$cdom.'_'.$cnum;
2735: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2736: &appenv({'environment.'.$envkey => $ckey});
2737: return 'ok';
2738: } else {
2739: return
2740: 'error: Count not permanently assign key, will need to be re-entered later.';
2741: }
2742: } else {
2743: return 'error: Could not assign key, try again later.';
2744: }
2745: } elsif (!$existing{$ckey}) {
2746: # the key does not exist
2747: return 'error: The key does not exist';
2748: } else {
2749: # the key is somebody else's
2750: return 'error: The key is already in use';
2751: }
2752: }
2753:
2754: # ------------------------------------------ put an additional comment on a key
2755:
2756: sub comment_access_key {
2757: #
2758: # a valid key looks like uname:udom#comments
2759: # comments are being appended
2760: #
2761: my ($ckey,$cdom,$cnum,$logentry)=@_;
2762: $cdom=
2763: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2764: $cnum=
2765: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2766: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2767: if ($existing{$ckey}) {
2768: $existing{$ckey}.='; '.$logentry;
2769: # ready to assign
2770: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2771: $cdom,$cnum) eq 'ok') {
2772: return 'ok';
2773: } else {
2774: return 'error: Count not store comment.';
2775: }
2776: } else {
2777: # the key does not exist
2778: return 'error: The key does not exist';
2779: }
2780: }
2781:
2782: # ------------------------------------------------------ Generate a set of keys
2783:
2784: sub generate_access_keys {
2785: my ($number,$cdom,$cnum,$logentry)=@_;
2786: $cdom=
2787: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2788: $cnum=
2789: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2790: unless (&allowed('mky',$cdom)) { return 0; }
2791: unless (($cdom) && ($cnum)) { return 0; }
2792: if ($number>10000) { return 0; }
2793: sleep(2); # make sure don't get same seed twice
2794: srand(time()^($$+($$<<15))); # from "Programming Perl"
2795: my $total=0;
2796: for (my $i=1;$i<=$number;$i++) {
2797: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2798: sprintf("%lx",int(100000*rand)).'-'.
2799: sprintf("%lx",int(100000*rand));
2800: $newkey=~s/1/g/g; # folks mix up 1 and l
2801: $newkey=~s/0/h/g; # and also 0 and O
2802: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2803: if ($existing{$newkey}) {
2804: $i--;
2805: } else {
2806: if (&put('accesskeys',
2807: { $newkey => '# generated '.localtime().
2808: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2809: '; '.$logentry },
2810: $cdom,$cnum) eq 'ok') {
2811: $total++;
2812: }
2813: }
2814: }
2815: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2816: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2817: return $total;
2818: }
2819:
2820: # ------------------------------------------------------- Validate an accesskey
2821:
2822: sub validate_access_key {
2823: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2824: $cdom=
2825: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2826: $cnum=
2827: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2828: $udom=$env{'user.domain'} unless (defined($udom));
2829: $uname=$env{'user.name'} unless (defined($uname));
2830: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2831: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2832: }
2833:
2834: # ------------------------------------- Find the section of student in a course
2835: sub devalidate_getsection_cache {
2836: my ($udom,$unam,$courseid)=@_;
2837: my $hashid="$udom:$unam:$courseid";
2838: &devalidate_cache_new('getsection',$hashid);
2839: }
2840:
2841: sub courseid_to_courseurl {
2842: my ($courseid) = @_;
2843: #already url style courseid
2844: return $courseid if ($courseid =~ m{^/});
2845:
2846: if (exists($env{'course.'.$courseid.'.num'})) {
2847: my $cnum = $env{'course.'.$courseid.'.num'};
2848: my $cdom = $env{'course.'.$courseid.'.domain'};
2849: return "/$cdom/$cnum";
2850: }
2851:
2852: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2853: if (exists($courseinfo{'num'})) {
2854: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2855: }
2856:
2857: return undef;
2858: }
2859:
2860: sub getsection {
2861: my ($udom,$unam,$courseid)=@_;
2862: my $cachetime=1800;
2863:
2864: my $hashid="$udom:$unam:$courseid";
2865: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2866: if (defined($cached)) { return $result; }
2867:
2868: my %Pending;
2869: my %Expired;
2870: #
2871: # Each role can either have not started yet (pending), be active,
2872: # or have expired.
2873: #
2874: # If there is an active role, we are done.
2875: #
2876: # If there is more than one role which has not started yet,
2877: # choose the one which will start sooner
2878: # If there is one role which has not started yet, return it.
2879: #
2880: # If there is more than one expired role, choose the one which ended last.
2881: # If there is a role which has expired, return it.
2882: #
2883: $courseid = &courseid_to_courseurl($courseid);
2884: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2885: foreach my $key (keys(%roleshash)) {
2886: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2887: my $section=$1;
2888: if ($key eq $courseid.'_st') { $section=''; }
2889: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2890: my $now=time;
2891: if (defined($end) && $end && ($now > $end)) {
2892: $Expired{$end}=$section;
2893: next;
2894: }
2895: if (defined($start) && $start && ($now < $start)) {
2896: $Pending{$start}=$section;
2897: next;
2898: }
2899: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2900: }
2901: #
2902: # Presumedly there will be few matching roles from the above
2903: # loop and the sorting time will be negligible.
2904: if (scalar(keys(%Pending))) {
2905: my ($time) = sort {$a <=> $b} keys(%Pending);
2906: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2907: }
2908: if (scalar(keys(%Expired))) {
2909: my @sorted = sort {$a <=> $b} keys(%Expired);
2910: my $time = pop(@sorted);
2911: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2912: }
2913: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2914: }
2915:
2916: sub save_cache {
2917: &purge_remembered();
2918: #&Apache::loncommon::validate_page();
2919: undef(%env);
2920: undef($env_loaded);
2921: }
2922:
2923: my $to_remember=-1;
2924: my %remembered;
2925: my %accessed;
2926: my $kicks=0;
2927: my $hits=0;
2928: sub make_key {
2929: my ($name,$id) = @_;
2930: if (length($id) > 65
2931: && length(&escape($id)) > 200) {
2932: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2933: }
2934: return &escape($name.':'.$id);
2935: }
2936:
2937: sub devalidate_cache_new {
2938: my ($name,$id,$debug) = @_;
2939: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2940: my $remembered_id=$name.':'.$id;
2941: $id=&make_key($name,$id);
2942: $memcache->delete($id);
2943: delete($remembered{$remembered_id});
2944: delete($accessed{$remembered_id});
2945: }
2946:
2947: sub is_cached_new {
2948: my ($name,$id,$debug) = @_;
2949: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2950: if (exists($remembered{$remembered_id})) {
2951: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2952: $accessed{$remembered_id}=[&gettimeofday()];
2953: $hits++;
2954: return ($remembered{$remembered_id},1);
2955: }
2956: $id=&make_key($name,$id);
2957: my $value = $memcache->get($id);
2958: if (!(defined($value))) {
2959: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2960: return (undef,undef);
2961: }
2962: if ($value eq '__undef__') {
2963: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2964: $value=undef;
2965: }
2966: &make_room($remembered_id,$value,$debug);
2967: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2968: return ($value,1);
2969: }
2970:
2971: sub do_cache_new {
2972: my ($name,$id,$value,$time,$debug) = @_;
2973: my $remembered_id=$name.':'.$id;
2974: $id=&make_key($name,$id);
2975: my $setvalue=$value;
2976: if (!defined($setvalue)) {
2977: $setvalue='__undef__';
2978: }
2979: if (!defined($time) ) {
2980: $time=600;
2981: }
2982: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2983: my $result = $memcache->set($id,$setvalue,$time);
2984: if (! $result) {
2985: &logthis("caching of id -> $id failed");
2986: $memcache->disconnect_all();
2987: }
2988: # need to make a copy of $value
2989: &make_room($remembered_id,$value,$debug);
2990: return $value;
2991: }
2992:
2993: sub make_room {
2994: my ($remembered_id,$value,$debug)=@_;
2995:
2996: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2997: : $value;
2998: if ($to_remember<0) { return; }
2999: $accessed{$remembered_id}=[&gettimeofday()];
3000: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3001: my $to_kick;
3002: my $max_time=0;
3003: foreach my $other (keys(%accessed)) {
3004: if (&tv_interval($accessed{$other}) > $max_time) {
3005: $to_kick=$other;
3006: $max_time=&tv_interval($accessed{$other});
3007: }
3008: }
3009: delete($remembered{$to_kick});
3010: delete($accessed{$to_kick});
3011: $kicks++;
3012: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3013: return;
3014: }
3015:
3016: sub purge_remembered {
3017: #&logthis("Tossing ".scalar(keys(%remembered)));
3018: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3019: undef(%remembered);
3020: undef(%accessed);
3021: }
3022: # ------------------------------------- Read an entry from a user's environment
3023:
3024: sub userenvironment {
3025: my ($udom,$unam,@what)=@_;
3026: my $items;
3027: foreach my $item (@what) {
3028: $items.=&escape($item).'&';
3029: }
3030: $items=~s/\&$//;
3031: my %returnhash=();
3032: my $uhome = &homeserver($unam,$udom);
3033: unless ($uhome eq 'no_host') {
3034: my @answer=split(/\&/,
3035: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3036: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3037: return %returnhash;
3038: }
3039: my $i;
3040: for ($i=0;$i<=$#what;$i++) {
3041: $returnhash{$what[$i]}=&unescape($answer[$i]);
3042: }
3043: }
3044: return %returnhash;
3045: }
3046:
3047: # ---------------------------------------------------------- Get a studentphoto
3048: sub studentphoto {
3049: my ($udom,$unam,$ext) = @_;
3050: my $home=&Apache::lonnet::homeserver($unam,$udom);
3051: if (defined($env{'request.course.id'})) {
3052: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3053: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3054: return(&retrievestudentphoto($udom,$unam,$ext));
3055: } else {
3056: my ($result,$perm_reqd)=
3057: &Apache::lonnet::auto_photo_permission($unam,$udom);
3058: if ($result eq 'ok') {
3059: if (!($perm_reqd eq 'yes')) {
3060: return(&retrievestudentphoto($udom,$unam,$ext));
3061: }
3062: }
3063: }
3064: }
3065: } else {
3066: my ($result,$perm_reqd) =
3067: &Apache::lonnet::auto_photo_permission($unam,$udom);
3068: if ($result eq 'ok') {
3069: if (!($perm_reqd eq 'yes')) {
3070: return(&retrievestudentphoto($udom,$unam,$ext));
3071: }
3072: }
3073: }
3074: return '/adm/lonKaputt/lonlogo_broken.gif';
3075: }
3076:
3077: sub retrievestudentphoto {
3078: my ($udom,$unam,$ext,$type) = @_;
3079: my $home=&Apache::lonnet::homeserver($unam,$udom);
3080: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3081: if ($ret eq 'ok') {
3082: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3083: if ($type eq 'thumbnail') {
3084: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3085: }
3086: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3087: return $tokenurl;
3088: } else {
3089: if ($type eq 'thumbnail') {
3090: return '/adm/lonKaputt/genericstudent_tn.gif';
3091: } else {
3092: return '/adm/lonKaputt/lonlogo_broken.gif';
3093: }
3094: }
3095: }
3096:
3097: # -------------------------------------------------------------------- New chat
3098:
3099: sub chatsend {
3100: my ($newentry,$anon,$group)=@_;
3101: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3102: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3103: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3104: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3105: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3106: &escape($newentry)).':'.$group,$chome);
3107: }
3108:
3109: # ------------------------------------------ Find current version of a resource
3110:
3111: sub getversion {
3112: my $fname=&clutter(shift);
3113: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3114: return ¤tversion(&filelocation('',$fname));
3115: }
3116:
3117: sub currentversion {
3118: my $fname=shift;
3119: my $author=$fname;
3120: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3121: my ($udom,$uname)=split(/\//,$author);
3122: my $home=&homeserver($uname,$udom);
3123: if ($home eq 'no_host') {
3124: return -1;
3125: }
3126: my $answer=&reply("currentversion:$fname",$home);
3127: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3128: return -1;
3129: }
3130: return $answer;
3131: }
3132:
3133: #
3134: # Return special version number of resource if set by override, empty otherwise
3135: #
3136: sub usedversion {
3137: my $fname=shift;
3138: unless ($fname) { $fname=$env{'request.uri'}; }
3139: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3140: if ($urlversion) { return $urlversion; }
3141: return '';
3142: }
3143:
3144: # ----------------------------- Subscribe to a resource, return URL if possible
3145:
3146: sub subscribe {
3147: my $fname=shift;
3148: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3149: $fname=~s/[\n\r]//g;
3150: my $author=$fname;
3151: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3152: my ($udom,$uname)=split(/\//,$author);
3153: my $home=homeserver($uname,$udom);
3154: if ($home eq 'no_host') {
3155: return 'not_found';
3156: }
3157: my $answer=reply("sub:$fname",$home);
3158: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3159: $answer.=' by '.$home;
3160: }
3161: return $answer;
3162: }
3163:
3164: # -------------------------------------------------------------- Replicate file
3165:
3166: sub repcopy {
3167: my $filename=shift;
3168: $filename=~s/\/+/\//g;
3169: my $londocroot = $perlvar{'lonDocRoot'};
3170: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3171: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3172: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3173: $filename=~m{^/*(uploaded|editupload)/}) {
3174: return &repcopy_userfile($filename);
3175: }
3176: $filename=~s/[\n\r]//g;
3177: my $transname="$filename.in.transfer";
3178: # FIXME: this should flock
3179: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3180: my $remoteurl=subscribe($filename);
3181: if ($remoteurl =~ /^con_lost by/) {
3182: &logthis("Subscribe returned $remoteurl: $filename");
3183: return 'unavailable';
3184: } elsif ($remoteurl eq 'not_found') {
3185: #&logthis("Subscribe returned not_found: $filename");
3186: return 'not_found';
3187: } elsif ($remoteurl =~ /^rejected by/) {
3188: &logthis("Subscribe returned $remoteurl: $filename");
3189: return 'forbidden';
3190: } elsif ($remoteurl eq 'directory') {
3191: return 'ok';
3192: } else {
3193: my $author=$filename;
3194: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3195: my ($udom,$uname)=split(/\//,$author);
3196: my $home=homeserver($uname,$udom);
3197: unless ($home eq $perlvar{'lonHostID'}) {
3198: my @parts=split(/\//,$filename);
3199: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3200: if ($path ne "$londocroot/res") {
3201: &logthis("Malconfiguration for replication: $filename");
3202: return 'bad_request';
3203: }
3204: my $count;
3205: for ($count=5;$count<$#parts;$count++) {
3206: $path.="/$parts[$count]";
3207: if ((-e $path)!=1) {
3208: mkdir($path,0777);
3209: }
3210: }
3211: my $request=new HTTP::Request('GET',"$remoteurl");
3212: my $response;
3213: if ($remoteurl =~ m{/raw/}) {
3214: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3215: } else {
3216: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3217: }
3218: if ($response->is_error()) {
3219: unlink($transname);
3220: my $message=$response->status_line;
3221: &logthis("<font color=\"blue\">WARNING:"
3222: ." LWP get: $message: $filename</font>");
3223: return 'unavailable';
3224: } else {
3225: if ($remoteurl!~/\.meta$/) {
3226: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3227: my $mresponse;
3228: if ($remoteurl =~ m{/raw/}) {
3229: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3230: } else {
3231: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3232: }
3233: if ($mresponse->is_error()) {
3234: unlink($filename.'.meta');
3235: &logthis(
3236: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3237: }
3238: }
3239: rename($transname,$filename);
3240: return 'ok';
3241: }
3242: }
3243: }
3244: }
3245:
3246: # ------------------------------------------------ Get server side include body
3247: sub ssi_body {
3248: my ($filelink,%form)=@_;
3249: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3250: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3251: }
3252: my $output='';
3253: my $response;
3254: if ($filelink=~/^https?\:/) {
3255: ($output,$response)=&externalssi($filelink);
3256: } else {
3257: $filelink .= $filelink=~/\?/ ? '&' : '?';
3258: $filelink .= 'inhibitmenu=yes';
3259: ($output,$response)=&ssi($filelink,%form);
3260: }
3261: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3262: $output=~s/^.*?\<body[^\>]*\>//si;
3263: $output=~s/\<\/body\s*\>.*?$//si;
3264: if (wantarray) {
3265: return ($output, $response);
3266: } else {
3267: return $output;
3268: }
3269: }
3270:
3271: # --------------------------------------------------------- Server Side Include
3272:
3273: sub absolute_url {
3274: my ($host_name) = @_;
3275: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3276: if ($host_name eq '') {
3277: $host_name = $ENV{'SERVER_NAME'};
3278: }
3279: return $protocol.$host_name;
3280: }
3281:
3282: #
3283: # Server side include.
3284: # Parameters:
3285: # fn Possibly encrypted resource name/id.
3286: # form Hash that describes how the rendering should be done
3287: # and other things.
3288: # Returns:
3289: # Scalar context: The content of the response.
3290: # Array context: 2 element list of the content and the full response object.
3291: #
3292: sub ssi {
3293:
3294: my ($fn,%form)=@_;
3295: my $request;
3296:
3297: $form{'no_update_last_known'}=1;
3298: &Apache::lonenc::check_encrypt(\$fn);
3299: if (%form) {
3300: $request=new HTTP::Request('POST',&absolute_url().$fn);
3301: $request->content(join('&',map {
3302: my $name = escape($_);
3303: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3304: ? join("&$name=", map {escape($_) } @{$form{$_}})
3305: : &escape($form{$_}) );
3306: } keys(%form)));
3307: } else {
3308: $request=new HTTP::Request('GET',&absolute_url().$fn);
3309: }
3310:
3311: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3312: my $lonhost = $perlvar{'lonHostID'};
3313: my $islocal;
3314: if (($env{'request.course.id'}) &&
3315: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3316: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3317: ($form{'grade_symb'} ne '') &&
3318: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3319: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3320: $islocal = 1;
3321: }
3322: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3323: '','','',$islocal);
3324:
3325: if (wantarray) {
3326: return ($response->content, $response);
3327: } else {
3328: return $response->content;
3329: }
3330: }
3331:
3332: sub externalssi {
3333: my ($url)=@_;
3334: my $request=new HTTP::Request('GET',$url);
3335: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3336: if (wantarray) {
3337: return ($response->content, $response);
3338: } else {
3339: return $response->content;
3340: }
3341: }
3342:
3343:
3344: # If the local copy of a replicated resource is outdated, trigger a
3345: # connection from the homeserver to flush the delayed queue. If no update
3346: # happens, remove local copies of outdated resource (and corresponding
3347: # metadata file).
3348:
3349: sub remove_stale_resfile {
3350: my ($url) = @_;
3351: my $removed;
3352: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3353: my $audom = $1;
3354: my $auname = $2;
3355: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3356: my $homeserver = &homeserver($auname,$audom);
3357: unless (($homeserver eq 'no_host') ||
3358: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3359: my $fname = &filelocation('',$url);
3360: if (-e $fname) {
3361: my $protocol = $protocol{$homeserver};
3362: $protocol = 'http' if ($protocol ne 'https');
3363: my $hostname = &hostname($homeserver);
3364: if ($hostname) {
3365: my $uri = &declutter($url);
3366: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3367: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3368: if ($response->is_success()) {
3369: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3370: my $locmodtime = (stat($fname))[9];
3371: if ($locmodtime < $remmodtime) {
3372: my $stale;
3373: my $answer = &reply('pong',$homeserver);
3374: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3375: sleep(0.2);
3376: $locmodtime = (stat($fname))[9];
3377: if ($locmodtime < $remmodtime) {
3378: my $posstransfer = $fname.'.in.transfer';
3379: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3380: $removed = 1;
3381: } else {
3382: $stale = 1;
3383: }
3384: } else {
3385: $removed = 1;
3386: }
3387: } else {
3388: $stale = 1;
3389: }
3390: if ($stale) {
3391: unlink($fname);
3392: if ($uri!~/\.meta$/) {
3393: unlink($fname.'.meta');
3394: }
3395: &reply("unsub:$fname",$homeserver);
3396: $removed = 1;
3397: }
3398: }
3399: }
3400: }
3401: }
3402: }
3403: }
3404: }
3405: return $removed;
3406: }
3407:
3408: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3409:
3410: sub allowuploaded {
3411: my ($srcurl,$url)=@_;
3412: $url=&clutter(&declutter($url));
3413: my $dir=$url;
3414: $dir=~s/\/[^\/]+$//;
3415: my %httpref=();
3416: my $httpurl=&hreflocation('',$url);
3417: $httpref{'httpref.'.$httpurl}=$srcurl;
3418: &Apache::lonnet::appenv(\%httpref);
3419: }
3420:
3421: #
3422: # Determine if the current user should be able to edit a particular resource,
3423: # when viewing in course context.
3424: # (a) When viewing resource used to determine if "Edit" item is included in
3425: # Functions.
3426: # (b) When displaying folder contents in course editor, used to determine if
3427: # "Edit" link will be displayed alongside resource.
3428: #
3429: # input: six args -- filename (decluttered), course number, course domain,
3430: # url, symb (if registered) and group (if this is a group
3431: # item -- e.g., bulletin board, group page etc.).
3432: # output: array of five scalars --
3433: # $cfile -- url for file editing if editable on current server
3434: # $home -- homeserver of resource (i.e., for author if published,
3435: # or course if uploaded.).
3436: # $switchserver -- 1 if server switch will be needed.
3437: # $forceedit -- 1 if icon/link should be to go to edit mode
3438: # $forceview -- 1 if icon/link should be to go to view mode
3439: #
3440:
3441: sub can_edit_resource {
3442: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3443: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3444: #
3445: # For aboutme pages user can only edit his/her own.
3446: #
3447: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3448: my ($sdom,$sname) = ($1,$2);
3449: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3450: $home = $env{'user.home'};
3451: $cfile = $resurl;
3452: if ($env{'form.forceedit'}) {
3453: $forceview = 1;
3454: } else {
3455: $forceedit = 1;
3456: }
3457: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3458: } else {
3459: return;
3460: }
3461: }
3462:
3463: if ($env{'request.course.id'}) {
3464: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3465: if ($group ne '') {
3466: # if this is a group homepage or group bulletin board, check group privs
3467: my $allowed = 0;
3468: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3469: if ((&allowed('mdg',$env{'request.course.id'}.
3470: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3471: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3472: $allowed = 1;
3473: }
3474: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3475: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3476: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3477: $allowed = 1;
3478: }
3479: }
3480: if ($allowed) {
3481: $home=&homeserver($cnum,$cdom);
3482: if ($env{'form.forceedit'}) {
3483: $forceview = 1;
3484: } else {
3485: $forceedit = 1;
3486: }
3487: $cfile = $resurl;
3488: } else {
3489: return;
3490: }
3491: } else {
3492: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3493: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3494: return;
3495: }
3496: } elsif (!$crsedit) {
3497: #
3498: # No edit allowed where CC has switched to student role.
3499: #
3500: return;
3501: }
3502: }
3503: }
3504:
3505: if ($file ne '') {
3506: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3507: if (&is_course_upload($file,$cnum,$cdom)) {
3508: $uploaded = 1;
3509: $incourse = 1;
3510: if ($file =~/\.(htm|html|css|js|txt)$/) {
3511: $cfile = &hreflocation('',$file);
3512: if ($env{'form.forceedit'}) {
3513: $forceview = 1;
3514: } else {
3515: $forceedit = 1;
3516: }
3517: }
3518: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3519: $incourse = 1;
3520: if ($env{'form.forceedit'}) {
3521: $forceview = 1;
3522: } else {
3523: $forceedit = 1;
3524: }
3525: $cfile = $resurl;
3526: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3527: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3528: $incourse = 1;
3529: if ($env{'form.forceedit'}) {
3530: $forceview = 1;
3531: } else {
3532: $forceedit = 1;
3533: }
3534: $cfile = $resurl;
3535: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3536: $incourse = 1;
3537: $cfile = $resurl.'/smpedit';
3538: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3539: $incourse = 1;
3540: if ($env{'form.forceedit'}) {
3541: $forceview = 1;
3542: } else {
3543: $forceedit = 1;
3544: }
3545: $cfile = $resurl;
3546: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3547: $incourse = 1;
3548: if ($env{'form.forceedit'}) {
3549: $forceview = 1;
3550: } else {
3551: $forceedit = 1;
3552: }
3553: $cfile = $resurl;
3554: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3555: $incourse = 1;
3556: if ($env{'form.forceedit'}) {
3557: $forceview = 1;
3558: } else {
3559: $forceedit = 1;
3560: }
3561: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3562: }
3563: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3564: my $template = '/res/lib/templates/simpleproblem.problem';
3565: if (&is_on_map($template)) {
3566: $incourse = 1;
3567: $forceview = 1;
3568: $cfile = $template;
3569: }
3570: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3571: $incourse = 1;
3572: if ($env{'form.forceedit'}) {
3573: $forceview = 1;
3574: } else {
3575: $forceedit = 1;
3576: }
3577: $cfile = $resurl;
3578: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3579: $incourse = 1;
3580: if ($env{'form.forceedit'}) {
3581: $forceview = 1;
3582: } else {
3583: $forceedit = 1;
3584: }
3585: $cfile = $resurl;
3586: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3587: $incourse = 1;
3588: $forceview = 1;
3589: if ($symb) {
3590: my ($map,$id,$res)=&decode_symb($symb);
3591: $env{'request.symb'} = $symb;
3592: $cfile = &clutter($res);
3593: } else {
3594: $cfile = $env{'form.suppurl'};
3595: my $escfile = &unescape($cfile);
3596: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3597: $cfile = '/adm/wrapper'.$escfile;
3598: } else {
3599: $escfile =~ s{^http://}{};
3600: $cfile = &escape("/adm/wrapper/ext/$escfile");
3601: }
3602: }
3603: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3604: if ($env{'form.forceedit'}) {
3605: $forceview = 1;
3606: } else {
3607: $forceedit = 1;
3608: }
3609: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3610: }
3611: }
3612: if ($uploaded || $incourse) {
3613: $home=&homeserver($cnum,$cdom);
3614: } elsif ($file !~ m{/$}) {
3615: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3616: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3617: # Check that the user has permission to edit this resource
3618: my $setpriv = 1;
3619: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3620: if (defined($cfudom)) {
3621: $home=&homeserver($cfuname,$cfudom);
3622: $cfile=$file;
3623: }
3624: }
3625: if (($cfile ne '') && (!$incourse || $uploaded) &&
3626: (($home ne '') && ($home ne 'no_host'))) {
3627: my @ids=¤t_machine_ids();
3628: unless (grep(/^\Q$home\E$/,@ids)) {
3629: $switchserver=1;
3630: }
3631: }
3632: }
3633: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3634: }
3635:
3636: sub is_course_upload {
3637: my ($file,$cnum,$cdom) = @_;
3638: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3639: $uploadpath =~ s{^\/}{};
3640: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3641: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3642: return 1;
3643: }
3644: return;
3645: }
3646:
3647: sub in_course {
3648: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3649: if ($hideprivileged) {
3650: my $skipuser;
3651: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3652: my @possdoms = ($cdom);
3653: if ($coursehash{'checkforpriv'}) {
3654: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3655: }
3656: if (&privileged($uname,$udom,\@possdoms)) {
3657: $skipuser = 1;
3658: if ($coursehash{'nothideprivileged'}) {
3659: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3660: my $user;
3661: if ($item =~ /:/) {
3662: $user = $item;
3663: } else {
3664: $user = join(':',split(/[\@]/,$item));
3665: }
3666: if ($user eq $uname.':'.$udom) {
3667: undef($skipuser);
3668: last;
3669: }
3670: }
3671: }
3672: if ($skipuser) {
3673: return 0;
3674: }
3675: }
3676: }
3677: $type ||= 'any';
3678: if (!defined($cdom) || !defined($cnum)) {
3679: my $cid = $env{'request.course.id'};
3680: $cdom = $env{'course.'.$cid.'.domain'};
3681: $cnum = $env{'course.'.$cid.'.num'};
3682: }
3683: my $typesref;
3684: if (($type eq 'any') || ($type eq 'all')) {
3685: $typesref = ['active','previous','future'];
3686: } elsif ($type eq 'previous' || $type eq 'future') {
3687: $typesref = [$type];
3688: }
3689: my %roles = &get_my_roles($uname,$udom,'userroles',
3690: $typesref,undef,[$cdom]);
3691: my ($tmp) = keys(%roles);
3692: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3693: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3694: if (@course_roles > 0) {
3695: return 1;
3696: }
3697: return 0;
3698: }
3699:
3700: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3701: # input: action, courseID, current domain, intended
3702: # path to file, source of file, instruction to parse file for objects,
3703: # ref to hash for embedded objects,
3704: # ref to hash for codebase of java objects.
3705: # reference to scalar to accommodate mime type determined
3706: # from File::MMagic if $parser = parse.
3707: #
3708: # output: url to file (if action was uploaddoc),
3709: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3710: #
3711: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3712: # course.
3713: #
3714: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3715: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3716: # course's home server.
3717: #
3718: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3719: # be copied from $source (current location) to
3720: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3721: # and will then be copied to
3722: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3723: # course's home server.
3724: #
3725: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3726: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3727: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3728: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3729: # in course's home server.
3730: #
3731:
3732: sub process_coursefile {
3733: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3734: $mimetype)=@_;
3735: my $fetchresult;
3736: my $home=&homeserver($docuname,$docudom);
3737: if ($action eq 'propagate') {
3738: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3739: $home);
3740: } else {
3741: my $fpath = '';
3742: my $fname = $file;
3743: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3744: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3745: my $filepath = &build_filepath($fpath);
3746: if ($action eq 'copy') {
3747: if ($source eq '') {
3748: $fetchresult = 'no source file';
3749: return $fetchresult;
3750: } else {
3751: my $destination = $filepath.'/'.$fname;
3752: rename($source,$destination);
3753: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3754: $home);
3755: }
3756: } elsif ($action eq 'uploaddoc') {
3757: open(my $fh,'>',$filepath.'/'.$fname);
3758: print $fh $env{'form.'.$source};
3759: close($fh);
3760: if ($parser eq 'parse') {
3761: my $mm = new File::MMagic;
3762: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3763: if ($type eq 'text/html') {
3764: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3765: unless ($parse_result eq 'ok') {
3766: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3767: }
3768: }
3769: if (ref($mimetype)) {
3770: $$mimetype = $type;
3771: }
3772: }
3773: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3774: $home);
3775: if ($fetchresult eq 'ok') {
3776: return '/uploaded/'.$fpath.'/'.$fname;
3777: } else {
3778: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3779: ' to host '.$home.': '.$fetchresult);
3780: return '/adm/notfound.html';
3781: }
3782: }
3783: }
3784: unless ( $fetchresult eq 'ok') {
3785: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3786: ' to host '.$home.': '.$fetchresult);
3787: }
3788: return $fetchresult;
3789: }
3790:
3791: sub build_filepath {
3792: my ($fpath) = @_;
3793: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3794: unless ($fpath eq '') {
3795: my @parts=split('/',$fpath);
3796: foreach my $part (@parts) {
3797: $filepath.= '/'.$part;
3798: if ((-e $filepath)!=1) {
3799: mkdir($filepath,0777);
3800: }
3801: }
3802: }
3803: return $filepath;
3804: }
3805:
3806: sub store_edited_file {
3807: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3808: my $file = $primary_url;
3809: $file =~ s#^/uploaded/$docudom/$docuname/##;
3810: my $fpath = '';
3811: my $fname = $file;
3812: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3813: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3814: my $filepath = &build_filepath($fpath);
3815: open(my $fh,'>',$filepath.'/'.$fname);
3816: print $fh $content;
3817: close($fh);
3818: my $home=&homeserver($docuname,$docudom);
3819: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3820: $home);
3821: if ($$fetchresult eq 'ok') {
3822: return '/uploaded/'.$fpath.'/'.$fname;
3823: } else {
3824: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3825: ' to host '.$home.': '.$$fetchresult);
3826: return '/adm/notfound.html';
3827: }
3828: }
3829:
3830: sub clean_filename {
3831: my ($fname,$args)=@_;
3832: # Replace Windows backslashes by forward slashes
3833: $fname=~s/\\/\//g;
3834: if (!$args->{'keep_path'}) {
3835: # Get rid of everything but the actual filename
3836: $fname=~s/^.*\/([^\/]+)$/$1/;
3837: }
3838: # Replace spaces by underscores
3839: $fname=~s/\s+/\_/g;
3840: # Replace all other weird characters by nothing
3841: $fname=~s{[^/\w\.\-]}{}g;
3842: # Replace all .\d. sequences with _\d. so they no longer look like version
3843: # numbers
3844: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3845: return $fname;
3846: }
3847: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3848: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3849: # image with the same aspect ratio as the original, but with dimensions which do
3850: # not exceed $resizewidth and $resizeheight.
3851:
3852: sub resizeImage {
3853: my ($img_path,$resizewidth,$resizeheight) = @_;
3854: my $ima = Image::Magick->new;
3855: my $resized;
3856: if (-e $img_path) {
3857: $ima->Read($img_path);
3858: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3859: my $width = $ima->Get('width');
3860: my $height = $ima->Get('height');
3861: if ($width > $resizewidth) {
3862: my $factor = $width/$resizewidth;
3863: my $newheight = $height/$factor;
3864: $ima->Scale(width=>$resizewidth,height=>$newheight);
3865: $resized = 1;
3866: }
3867: }
3868: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3869: my $width = $ima->Get('width');
3870: my $height = $ima->Get('height');
3871: if ($height > $resizeheight) {
3872: my $factor = $height/$resizeheight;
3873: my $newwidth = $width/$factor;
3874: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3875: $resized = 1;
3876: }
3877: }
3878: if ($resized) {
3879: $ima->Write($img_path);
3880: }
3881: }
3882: return;
3883: }
3884:
3885: # --------------- Take an uploaded file and put it into the userfiles directory
3886: # input: $formname - the contents of the file are in $env{"form.$formname"}
3887: # the desired filename is in $env{"form.$formname.filename"}
3888: # $context - possible values: coursedoc, existingfile, overwrite,
3889: # canceloverwrite, or ''.
3890: # if 'coursedoc': upload to the current course
3891: # if 'existingfile': write file to tmp/overwrites directory
3892: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3893: # $context is passed as argument to &finishuserfileupload
3894: # $subdir - directory in userfile to store the file into
3895: # $parser - instruction to parse file for objects ($parser = parse)
3896: # $allfiles - reference to hash for embedded objects
3897: # $codebase - reference to hash for codebase of java objects
3898: # $desuname - username for permanent storage of uploaded file
3899: # $dsetudom - domain for permanaent storage of uploaded file
3900: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3901: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3902: # $resizewidth - width (pixels) to which to resize uploaded image
3903: # $resizeheight - height (pixels) to which to resize uploaded image
3904: # $mimetype - reference to scalar to accommodate mime type determined
3905: # from File::MMagic.
3906: #
3907: # output: url of file in userspace, or error: <message>
3908: # or /adm/notfound.html if failure to upload occurse
3909:
3910: sub userfileupload {
3911: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3912: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3913: if (!defined($subdir)) { $subdir='unknown'; }
3914: my $fname=$env{'form.'.$formname.'.filename'};
3915: $fname=&clean_filename($fname);
3916: # See if there is anything left
3917: unless ($fname) { return 'error: no uploaded file'; }
3918: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3919: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3920: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3921: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3922: my $now = time;
3923: my $filepath;
3924: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3925: $filepath = 'tmp/helprequests/'.$now;
3926: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3927: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3928: '_'.$env{'user.domain'}.'/pending';
3929: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3930: my ($docuname,$docudom);
3931: if ($destudom =~ /^$match_domain$/) {
3932: $docudom = $destudom;
3933: } else {
3934: $docudom = $env{'user.domain'};
3935: }
3936: if ($destuname =~ /^$match_username$/) {
3937: $docuname = $destuname;
3938: } else {
3939: $docuname = $env{'user.name'};
3940: }
3941: if (exists($env{'form.group'})) {
3942: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3943: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3944: }
3945: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3946: if ($context eq 'canceloverwrite') {
3947: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3948: if (-e $tempfile) {
3949: my @info = stat($tempfile);
3950: if ($info[9] eq $env{'form.timestamp'}) {
3951: unlink($tempfile);
3952: }
3953: }
3954: return;
3955: }
3956: }
3957: # Create the directory if not present
3958: my @parts=split(/\//,$filepath);
3959: my $fullpath = $perlvar{'lonDaemons'};
3960: for (my $i=0;$i<@parts;$i++) {
3961: $fullpath .= '/'.$parts[$i];
3962: if ((-e $fullpath)!=1) {
3963: mkdir($fullpath,0777);
3964: }
3965: }
3966: open(my $fh,'>',$fullpath.'/'.$fname);
3967: print $fh $env{'form.'.$formname};
3968: close($fh);
3969: if ($context eq 'existingfile') {
3970: my @info = stat($fullpath.'/'.$fname);
3971: return ($fullpath.'/'.$fname,$info[9]);
3972: } else {
3973: return $fullpath.'/'.$fname;
3974: }
3975: }
3976: if ($subdir eq 'scantron') {
3977: $fname = 'scantron_orig_'.$fname;
3978: } else {
3979: $fname="$subdir/$fname";
3980: }
3981: if ($context eq 'coursedoc') {
3982: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3983: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3984: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3985: return &finishuserfileupload($docuname,$docudom,
3986: $formname,$fname,$parser,$allfiles,
3987: $codebase,$thumbwidth,$thumbheight,
3988: $resizewidth,$resizeheight,$context,$mimetype);
3989: } else {
3990: if ($env{'form.folder'}) {
3991: $fname=$env{'form.folder'}.'/'.$fname;
3992: }
3993: return &process_coursefile('uploaddoc',$docuname,$docudom,
3994: $fname,$formname,$parser,
3995: $allfiles,$codebase,$mimetype);
3996: }
3997: } elsif (defined($destuname)) {
3998: my $docuname=$destuname;
3999: my $docudom=$destudom;
4000: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4001: $parser,$allfiles,$codebase,
4002: $thumbwidth,$thumbheight,
4003: $resizewidth,$resizeheight,$context,$mimetype);
4004: } else {
4005: my $docuname=$env{'user.name'};
4006: my $docudom=$env{'user.domain'};
4007: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4008: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4009: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4010: }
4011: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4012: $parser,$allfiles,$codebase,
4013: $thumbwidth,$thumbheight,
4014: $resizewidth,$resizeheight,$context,$mimetype);
4015: }
4016: }
4017:
4018: sub finishuserfileupload {
4019: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4020: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4021: my $path=$docudom.'/'.$docuname.'/';
4022: my $filepath=$perlvar{'lonDocRoot'};
4023:
4024: my ($fnamepath,$file,$fetchthumb);
4025: $file=$fname;
4026: if ($fname=~m|/|) {
4027: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4028: $path.=$fnamepath.'/';
4029: }
4030: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4031: my $count;
4032: for ($count=4;$count<=$#parts;$count++) {
4033: $filepath.="/$parts[$count]";
4034: if ((-e $filepath)!=1) {
4035: mkdir($filepath,0777);
4036: }
4037: }
4038:
4039: # Save the file
4040: {
4041: if (!open(FH,'>',$filepath.'/'.$file)) {
4042: &logthis('Failed to create '.$filepath.'/'.$file);
4043: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4044: return '/adm/notfound.html';
4045: }
4046: if ($context eq 'overwrite') {
4047: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4048: my $target = $filepath.'/'.$file;
4049: if (-e $source) {
4050: my @info = stat($source);
4051: if ($info[9] eq $env{'form.timestamp'}) {
4052: unless (&File::Copy::move($source,$target)) {
4053: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4054: return "Moving from $source failed";
4055: }
4056: } else {
4057: return "Temporary file: $source had unexpected date/time for last modification";
4058: }
4059: } else {
4060: return "Temporary file: $source missing";
4061: }
4062: } elsif (!print FH ($env{'form.'.$formname})) {
4063: &logthis('Failed to write to '.$filepath.'/'.$file);
4064: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4065: return '/adm/notfound.html';
4066: }
4067: close(FH);
4068: if ($resizewidth && $resizeheight) {
4069: my $mm = new File::MMagic;
4070: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4071: if ($mime_type =~ m{^image/}) {
4072: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4073: }
4074: }
4075: }
4076: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4077: if (ref($mimetype)) {
4078: if ($$mimetype eq '') {
4079: my $mm = new File::MMagic;
4080: my $type = $mm->checktype_filename($filepath.'/'.$file);
4081: $$mimetype = $type;
4082: }
4083: }
4084: }
4085: if ($parser eq 'parse') {
4086: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4087: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4088: $allfiles,$codebase);
4089: unless ($parse_result eq 'ok') {
4090: &logthis('Failed to parse '.$filepath.$file.
4091: ' for embedded media: '.$parse_result);
4092: }
4093: }
4094: }
4095: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4096: my $input = $filepath.'/'.$file;
4097: my $output = $filepath.'/'.'tn-'.$file;
4098: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4099: my @args = ('convert','-sample',$thumbsize,$input,$output);
4100: system({$args[0]} @args);
4101: if (-e $filepath.'/'.'tn-'.$file) {
4102: $fetchthumb = 1;
4103: }
4104: }
4105:
4106: # Notify homeserver to grep it
4107: #
4108: my $docuhome=&homeserver($docuname,$docudom);
4109: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4110: if ($fetchresult eq 'ok') {
4111: if ($fetchthumb) {
4112: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4113: if ($thumbresult ne 'ok') {
4114: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4115: $docuhome.': '.$thumbresult);
4116: }
4117: }
4118: #
4119: # Return the URL to it
4120: return '/uploaded/'.$path.$file;
4121: } else {
4122: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4123: ': '.$fetchresult);
4124: return '/adm/notfound.html';
4125: }
4126: }
4127:
4128: sub extract_embedded_items {
4129: my ($fullpath,$allfiles,$codebase,$content) = @_;
4130: my @state = ();
4131: my (%lastids,%related,%shockwave,%flashvars);
4132: my %javafiles = (
4133: codebase => '',
4134: code => '',
4135: archive => ''
4136: );
4137: my %mediafiles = (
4138: src => '',
4139: movie => '',
4140: );
4141: my $p;
4142: if ($content) {
4143: $p = HTML::LCParser->new($content);
4144: } else {
4145: $p = HTML::LCParser->new($fullpath);
4146: }
4147: while (my $t=$p->get_token()) {
4148: if ($t->[0] eq 'S') {
4149: my ($tagname, $attr) = ($t->[1],$t->[2]);
4150: push(@state, $tagname);
4151: if (lc($tagname) eq 'allow') {
4152: &add_filetype($allfiles,$attr->{'src'},'src');
4153: }
4154: if (lc($tagname) eq 'img') {
4155: &add_filetype($allfiles,$attr->{'src'},'src');
4156: }
4157: if (lc($tagname) eq 'a') {
4158: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4159: &add_filetype($allfiles,$attr->{'href'},'href');
4160: }
4161: }
4162: if (lc($tagname) eq 'script') {
4163: my $src;
4164: if ($attr->{'archive'} =~ /\.jar$/i) {
4165: &add_filetype($allfiles,$attr->{'archive'},'archive');
4166: } else {
4167: if ($attr->{'src'} ne '') {
4168: $src = $attr->{'src'};
4169: &add_filetype($allfiles,$src,'src');
4170: }
4171: }
4172: my $text = $p->get_trimmed_text();
4173: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4174: my @swfargs = split(/,/,$1);
4175: foreach my $item (@swfargs) {
4176: $item =~ s/["']//g;
4177: $item =~ s/^\s+//;
4178: $item =~ s/\s+$//;
4179: }
4180: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4181: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4182: push(@{$related{$swfargs[0]}},$swfargs[2]);
4183: } else {
4184: $related{$swfargs[0]} = [$swfargs[2]];
4185: }
4186: }
4187: }
4188: }
4189: if (lc($tagname) eq 'link') {
4190: if (lc($attr->{'rel'}) eq 'stylesheet') {
4191: &add_filetype($allfiles,$attr->{'href'},'href');
4192: }
4193: }
4194: if (lc($tagname) eq 'object' ||
4195: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4196: foreach my $item (keys(%javafiles)) {
4197: $javafiles{$item} = '';
4198: }
4199: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4200: $lastids{lc($tagname)} = $attr->{'id'};
4201: }
4202: }
4203: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4204: my $name = lc($attr->{'name'});
4205: foreach my $item (keys(%javafiles)) {
4206: if ($name eq $item) {
4207: $javafiles{$item} = $attr->{'value'};
4208: last;
4209: }
4210: }
4211: my $pathfrom;
4212: foreach my $item (keys(%mediafiles)) {
4213: if ($name eq $item) {
4214: $pathfrom = $attr->{'value'};
4215: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4216: &add_filetype($allfiles,$pathfrom,$name);
4217: last;
4218: }
4219: }
4220: if ($name eq 'flashvars') {
4221: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4222: }
4223: if ($pathfrom ne '') {
4224: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4225: $pathfrom);
4226: }
4227: }
4228: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4229: foreach my $item (keys(%javafiles)) {
4230: if ($attr->{$item}) {
4231: $javafiles{$item} = $attr->{$item};
4232: last;
4233: }
4234: }
4235: foreach my $item (keys(%mediafiles)) {
4236: if ($attr->{$item}) {
4237: &add_filetype($allfiles,$attr->{$item},$item);
4238: last;
4239: }
4240: }
4241: if (lc($tagname) eq 'embed') {
4242: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4243: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4244: $attr->{'src'});
4245: }
4246: }
4247: }
4248: if (lc($tagname) eq 'iframe') {
4249: my $src = $attr->{'src'} ;
4250: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4251: &add_filetype($allfiles,$src,'src');
4252: } elsif ($src =~ m{^/}) {
4253: if ($env{'request.course.id'}) {
4254: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4255: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4256: my $url = &hreflocation('',$fullpath);
4257: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4258: my $relpath = $1;
4259: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4260: &add_filetype($allfiles,$1,'src');
4261: }
4262: }
4263: }
4264: }
4265: }
4266: if ($t->[4] =~ m{/>$}) {
4267: pop(@state);
4268: }
4269: } elsif ($t->[0] eq 'E') {
4270: my ($tagname) = ($t->[1]);
4271: if ($javafiles{'codebase'} ne '') {
4272: $javafiles{'codebase'} .= '/';
4273: }
4274: if (lc($tagname) eq 'applet' ||
4275: lc($tagname) eq 'object' ||
4276: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4277: ) {
4278: foreach my $item (keys(%javafiles)) {
4279: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4280: my $file=$javafiles{'codebase'}.$javafiles{$item};
4281: &add_filetype($allfiles,$file,$item);
4282: }
4283: }
4284: }
4285: pop @state;
4286: }
4287: }
4288: foreach my $id (sort(keys(%flashvars))) {
4289: if ($shockwave{$id} ne '') {
4290: my @pairs = split(/\&/,$flashvars{$id});
4291: foreach my $pair (@pairs) {
4292: my ($key,$value) = split(/\=/,$pair);
4293: if ($key eq 'thumb') {
4294: &add_filetype($allfiles,$value,$key);
4295: } elsif ($key eq 'content') {
4296: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4297: my ($ext) = ($value =~ /\.([^.]+)$/);
4298: if ($ext ne '') {
4299: &add_filetype($allfiles,$path.$value,$ext);
4300: }
4301: }
4302: }
4303: }
4304: }
4305: return 'ok';
4306: }
4307:
4308: sub add_filetype {
4309: my ($allfiles,$file,$type)=@_;
4310: if (exists($allfiles->{$file})) {
4311: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4312: push(@{$allfiles->{$file}}, &escape($type));
4313: }
4314: } else {
4315: @{$allfiles->{$file}} = (&escape($type));
4316: }
4317: }
4318:
4319: sub embedded_dependency {
4320: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4321: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4322: if (($identifier ne '') &&
4323: (ref($related->{$identifier}) eq 'ARRAY') &&
4324: ($pathfrom ne '')) {
4325: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4326: foreach my $dep (@{$related->{$identifier}}) {
4327: &add_filetype($allfiles,$path.$dep,'object');
4328: }
4329: }
4330: }
4331: return;
4332: }
4333:
4334: sub removeuploadedurl {
4335: my ($url)=@_;
4336: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4337: return &removeuserfile($uname,$udom,$fname);
4338: }
4339:
4340: sub removeuserfile {
4341: my ($docuname,$docudom,$fname)=@_;
4342: my $home=&homeserver($docuname,$docudom);
4343: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4344: if ($result eq 'ok') {
4345: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4346: my $metafile = $fname.'.meta';
4347: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4348: my $url = "/uploaded/$docudom/$docuname/$fname";
4349: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4350: my $sqlresult =
4351: &update_portfolio_table($docuname,$docudom,$file,
4352: 'portfolio_metadata',$group,
4353: 'delete');
4354: }
4355: }
4356: return $result;
4357: }
4358:
4359: sub mkdiruserfile {
4360: my ($docuname,$docudom,$dir)=@_;
4361: my $home=&homeserver($docuname,$docudom);
4362: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4363: }
4364:
4365: sub renameuserfile {
4366: my ($docuname,$docudom,$old,$new)=@_;
4367: my $home=&homeserver($docuname,$docudom);
4368: my $result = &reply("renameuserfile:$docudom:$docuname:".
4369: &escape("$old").':'.&escape("$new"),$home);
4370: if ($result eq 'ok') {
4371: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4372: my $oldmeta = $old.'.meta';
4373: my $newmeta = $new.'.meta';
4374: my $metaresult =
4375: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4376: my $url = "/uploaded/$docudom/$docuname/$old";
4377: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4378: my $sqlresult =
4379: &update_portfolio_table($docuname,$docudom,$file,
4380: 'portfolio_metadata',$group,
4381: 'delete');
4382: }
4383: }
4384: return $result;
4385: }
4386:
4387: # ------------------------------------------------------------------------- Log
4388:
4389: sub log {
4390: my ($dom,$nam,$hom,$what)=@_;
4391: return critical("log:$dom:$nam:$what",$hom);
4392: }
4393:
4394: # ------------------------------------------------------------------ Course Log
4395: #
4396: # This routine flushes several buffers of non-mission-critical nature
4397: #
4398:
4399: sub flushcourselogs {
4400: &logthis('Flushing log buffers');
4401: #
4402: # course logs
4403: # This is a log of all transactions in a course, which can be used
4404: # for data mining purposes
4405: #
4406: # It also collects the courseid database, which lists last transaction
4407: # times and course titles for all courseids
4408: #
4409: my %courseidbuffer=();
4410: foreach my $crsid (keys(%courselogs)) {
4411: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4412: &escape($courselogs{$crsid}),
4413: $coursehombuf{$crsid}) eq 'ok') {
4414: delete $courselogs{$crsid};
4415: } else {
4416: &logthis('Failed to flush log buffer for '.$crsid);
4417: if (length($courselogs{$crsid})>40000) {
4418: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4419: " exceeded maximum size, deleting.</font>");
4420: delete $courselogs{$crsid};
4421: }
4422: }
4423: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4424: 'description' => $coursedescrbuf{$crsid},
4425: 'inst_code' => $courseinstcodebuf{$crsid},
4426: 'type' => $coursetypebuf{$crsid},
4427: 'owner' => $courseownerbuf{$crsid},
4428: };
4429: }
4430: #
4431: # Write course id database (reverse lookup) to homeserver of courses
4432: # Is used in pickcourse
4433: #
4434: foreach my $crs_home (keys(%courseidbuffer)) {
4435: my $response = &courseidput(&host_domain($crs_home),
4436: $courseidbuffer{$crs_home},
4437: $crs_home,'timeonly');
4438: }
4439: #
4440: # File accesses
4441: # Writes to the dynamic metadata of resources to get hit counts, etc.
4442: #
4443: foreach my $entry (keys(%accesshash)) {
4444: if ($entry =~ /___count$/) {
4445: my ($dom,$name);
4446: ($dom,$name,undef)=
4447: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4448: if (! defined($dom) || $dom eq '' ||
4449: ! defined($name) || $name eq '') {
4450: my $cid = $env{'request.course.id'};
4451: $dom = $env{'request.'.$cid.'.domain'};
4452: $name = $env{'request.'.$cid.'.num'};
4453: }
4454: my $value = $accesshash{$entry};
4455: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4456: my %temphash=($url => $value);
4457: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4458: if ($result eq 'ok') {
4459: delete $accesshash{$entry};
4460: }
4461: } else {
4462: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4463: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4464: my %temphash=($entry => $accesshash{$entry});
4465: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4466: delete $accesshash{$entry};
4467: }
4468: }
4469: }
4470: #
4471: # Roles
4472: # Reverse lookup of user roles for course faculty/staff and co-authorship
4473: #
4474: foreach my $entry (keys(%userrolehash)) {
4475: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4476: split(/\:/,$entry);
4477: if (&Apache::lonnet::put('nohist_userroles',
4478: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4479: $rudom,$runame) eq 'ok') {
4480: delete $userrolehash{$entry};
4481: }
4482: }
4483: #
4484: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4485: #
4486: my %domrolebuffer = ();
4487: foreach my $entry (keys(%domainrolehash)) {
4488: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4489: if ($domrolebuffer{$rudom}) {
4490: $domrolebuffer{$rudom}.='&'.&escape($entry).
4491: '='.&escape($domainrolehash{$entry});
4492: } else {
4493: $domrolebuffer{$rudom}.=&escape($entry).
4494: '='.&escape($domainrolehash{$entry});
4495: }
4496: delete $domainrolehash{$entry};
4497: }
4498: foreach my $dom (keys(%domrolebuffer)) {
4499: my %servers;
4500: if (defined(&domain($dom,'primary'))) {
4501: my $primary=&domain($dom,'primary');
4502: my $hostname=&hostname($primary);
4503: $servers{$primary} = $hostname;
4504: } else {
4505: %servers = &get_servers($dom,'library');
4506: }
4507: foreach my $tryserver (keys(%servers)) {
4508: if (&reply('domroleput:'.$dom.':'.
4509: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4510: last;
4511: } else {
4512: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4513: }
4514: }
4515: }
4516: $dumpcount++;
4517: }
4518:
4519: sub courselog {
4520: my $what=shift;
4521: $what=time.':'.$what;
4522: unless ($env{'request.course.id'}) { return ''; }
4523: $coursedombuf{$env{'request.course.id'}}=
4524: $env{'course.'.$env{'request.course.id'}.'.domain'};
4525: $coursenumbuf{$env{'request.course.id'}}=
4526: $env{'course.'.$env{'request.course.id'}.'.num'};
4527: $coursehombuf{$env{'request.course.id'}}=
4528: $env{'course.'.$env{'request.course.id'}.'.home'};
4529: $coursedescrbuf{$env{'request.course.id'}}=
4530: $env{'course.'.$env{'request.course.id'}.'.description'};
4531: $courseinstcodebuf{$env{'request.course.id'}}=
4532: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4533: $courseownerbuf{$env{'request.course.id'}}=
4534: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4535: $coursetypebuf{$env{'request.course.id'}}=
4536: $env{'course.'.$env{'request.course.id'}.'.type'};
4537: if (defined $courselogs{$env{'request.course.id'}}) {
4538: $courselogs{$env{'request.course.id'}}.='&'.$what;
4539: } else {
4540: $courselogs{$env{'request.course.id'}}.=$what;
4541: }
4542: if (length($courselogs{$env{'request.course.id'}})>4048) {
4543: &flushcourselogs();
4544: }
4545: }
4546:
4547: sub courseacclog {
4548: my $fnsymb=shift;
4549: unless ($env{'request.course.id'}) { return ''; }
4550: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4551: if ($fnsymb=~/$LONCAPA::assess_re/) {
4552: $what.=':POST';
4553: # FIXME: Probably ought to escape things....
4554: foreach my $key (keys(%env)) {
4555: if ($key=~/^form\.(.*)/) {
4556: my $formitem = $1;
4557: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4558: $what.=':'.$formitem.'='.$env{$key};
4559: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4560: $what.=':'.$formitem.'='.$env{$key};
4561: }
4562: }
4563: }
4564: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4565: # FIXME: We should not be depending on a form parameter that someone
4566: # editing lonsearchcat.pm might change in the future.
4567: if ($env{'form.phase'} eq 'course_search') {
4568: $what.= ':POST';
4569: # FIXME: Probably ought to escape things....
4570: foreach my $element ('courseexp','crsfulltext','crsrelated',
4571: 'crsdiscuss') {
4572: $what.=':'.$element.'='.$env{'form.'.$element};
4573: }
4574: }
4575: }
4576: &courselog($what);
4577: }
4578:
4579: sub countacc {
4580: my $url=&declutter(shift);
4581: return if (! defined($url) || $url eq '');
4582: unless ($env{'request.course.id'}) { return ''; }
4583: #
4584: # Mark that this url was used in this course
4585: #
4586: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4587: #
4588: # Increase the access count for this resource in this child process
4589: #
4590: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4591: $accesshash{$key}++;
4592: }
4593:
4594: sub linklog {
4595: my ($from,$to)=@_;
4596: $from=&declutter($from);
4597: $to=&declutter($to);
4598: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4599: $accesshash{$to.'___'.$from.'___goto'}=1;
4600: }
4601:
4602: sub statslog {
4603: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4604: if ($users<2) { return; }
4605: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4606: 'course' => $env{'request.course.id'},
4607: 'sections' => '"all"',
4608: 'num_students' => $users,
4609: 'part' => $part,
4610: 'symb' => $symb,
4611: 'mean_tries' => $av_attempts,
4612: 'deg_of_diff' => $degdiff});
4613: foreach my $key (keys(%dynstore)) {
4614: $accesshash{$key}=$dynstore{$key};
4615: }
4616: }
4617:
4618: sub userrolelog {
4619: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4620: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4621: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4622: $userrolehash
4623: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4624: =$tend.':'.$tstart;
4625: }
4626: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4627: $userrolehash
4628: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4629: =$tend.':'.$tstart;
4630: }
4631: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4632: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4633: $domainrolehash
4634: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4635: = $tend.':'.$tstart;
4636: }
4637: }
4638:
4639: sub courserolelog {
4640: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4641: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4642: my $cdom = $1;
4643: my $cnum = $2;
4644: my $sec = $3;
4645: my $namespace = 'rolelog';
4646: my %storehash = (
4647: role => $trole,
4648: start => $tstart,
4649: end => $tend,
4650: selfenroll => $selfenroll,
4651: context => $context,
4652: );
4653: if ($trole eq 'gr') {
4654: $namespace = 'groupslog';
4655: $storehash{'group'} = $sec;
4656: } else {
4657: $storehash{'section'} = $sec;
4658: }
4659: &write_log('course',$namespace,\%storehash,$delflag,$username,
4660: $domain,$cnum,$cdom);
4661: if (($trole ne 'st') || ($sec ne '')) {
4662: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4663: }
4664: }
4665: return;
4666: }
4667:
4668: sub domainrolelog {
4669: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4670: if ($area =~ m{^/($match_domain)/$}) {
4671: my $cdom = $1;
4672: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4673: my $namespace = 'rolelog';
4674: my %storehash = (
4675: role => $trole,
4676: start => $tstart,
4677: end => $tend,
4678: context => $context,
4679: );
4680: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4681: $domain,$domconfiguser,$cdom);
4682: }
4683: return;
4684:
4685: }
4686:
4687: sub coauthorrolelog {
4688: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4689: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4690: my $audom = $1;
4691: my $auname = $2;
4692: my $namespace = 'rolelog';
4693: my %storehash = (
4694: role => $trole,
4695: start => $tstart,
4696: end => $tend,
4697: context => $context,
4698: );
4699: &write_log('author',$namespace,\%storehash,$delflag,$username,
4700: $domain,$auname,$audom);
4701: }
4702: return;
4703: }
4704:
4705: sub get_course_adv_roles {
4706: my ($cid,$codes) = @_;
4707: $cid=$env{'request.course.id'} unless (defined($cid));
4708: my %coursehash=&coursedescription($cid);
4709: my $crstype = &Apache::loncommon::course_type($cid);
4710: my %nothide=();
4711: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4712: if ($user !~ /:/) {
4713: $nothide{join(':',split(/[\@]/,$user))}=1;
4714: } else {
4715: $nothide{$user}=1;
4716: }
4717: }
4718: my @possdoms = ($coursehash{'domain'});
4719: if ($coursehash{'checkforpriv'}) {
4720: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4721: }
4722: my %returnhash=();
4723: my %dumphash=
4724: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4725: my $now=time;
4726: my %privileged;
4727: foreach my $entry (keys(%dumphash)) {
4728: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4729: if (($tstart) && ($tstart<0)) { next; }
4730: if (($tend) && ($tend<$now)) { next; }
4731: if (($tstart) && ($now<$tstart)) { next; }
4732: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4733: if ($username eq '' || $domain eq '') { next; }
4734: if ((&privileged($username,$domain,\@possdoms)) &&
4735: (!$nothide{$username.':'.$domain})) { next; }
4736: if ($role eq 'cr') { next; }
4737: if ($codes) {
4738: if ($section) { $role .= ':'.$section; }
4739: if ($returnhash{$role}) {
4740: $returnhash{$role}.=','.$username.':'.$domain;
4741: } else {
4742: $returnhash{$role}=$username.':'.$domain;
4743: }
4744: } else {
4745: my $key=&plaintext($role,$crstype);
4746: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4747: if ($returnhash{$key}) {
4748: $returnhash{$key}.=','.$username.':'.$domain;
4749: } else {
4750: $returnhash{$key}=$username.':'.$domain;
4751: }
4752: }
4753: }
4754: return %returnhash;
4755: }
4756:
4757: sub get_my_roles {
4758: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4759: unless (defined($uname)) { $uname=$env{'user.name'}; }
4760: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4761: my (%dumphash,%nothide);
4762: if ($context eq 'userroles') {
4763: %dumphash = &dump('roles',$udom,$uname);
4764: } else {
4765: %dumphash = &dump('nohist_userroles',$udom,$uname);
4766: if ($hidepriv) {
4767: my %coursehash=&coursedescription($udom.'_'.$uname);
4768: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4769: if ($user !~ /:/) {
4770: $nothide{join(':',split(/[\@]/,$user))} = 1;
4771: } else {
4772: $nothide{$user} = 1;
4773: }
4774: }
4775: }
4776: }
4777: my %returnhash=();
4778: my $now=time;
4779: my %privileged;
4780: foreach my $entry (keys(%dumphash)) {
4781: my ($role,$tend,$tstart);
4782: if ($context eq 'userroles') {
4783: next if ($entry =~ /^rolesdef/);
4784: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4785: } else {
4786: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4787: }
4788: if (($tstart) && ($tstart<0)) { next; }
4789: my $status = 'active';
4790: if (($tend) && ($tend<=$now)) {
4791: $status = 'previous';
4792: }
4793: if (($tstart) && ($now<$tstart)) {
4794: $status = 'future';
4795: }
4796: if (ref($types) eq 'ARRAY') {
4797: if (!grep(/^\Q$status\E$/,@{$types})) {
4798: next;
4799: }
4800: } else {
4801: if ($status ne 'active') {
4802: next;
4803: }
4804: }
4805: my ($rolecode,$username,$domain,$section,$area);
4806: if ($context eq 'userroles') {
4807: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4808: (undef,$domain,$username,$section) = split(/\//,$area);
4809: } else {
4810: ($role,$username,$domain,$section) = split(/\:/,$entry);
4811: }
4812: if (ref($roledoms) eq 'ARRAY') {
4813: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4814: next;
4815: }
4816: }
4817: if (ref($roles) eq 'ARRAY') {
4818: if (!grep(/^\Q$role\E$/,@{$roles})) {
4819: if ($role =~ /^cr\//) {
4820: if (!grep(/^cr$/,@{$roles})) {
4821: next;
4822: }
4823: } elsif ($role =~ /^gr\//) {
4824: if (!grep(/^gr$/,@{$roles})) {
4825: next;
4826: }
4827: } else {
4828: next;
4829: }
4830: }
4831: }
4832: if ($hidepriv) {
4833: my @privroles = ('dc','su');
4834: if ($context eq 'userroles') {
4835: next if (grep(/^\Q$role\E$/,@privroles));
4836: } else {
4837: my $possdoms = [$domain];
4838: if (ref($roledoms) eq 'ARRAY') {
4839: push(@{$possdoms},@{$roledoms});
4840: }
4841: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4842: if (!$nothide{$username.':'.$domain}) {
4843: next;
4844: }
4845: }
4846: }
4847: }
4848: if ($withsec) {
4849: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4850: $tstart.':'.$tend;
4851: } else {
4852: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4853: }
4854: }
4855: return %returnhash;
4856: }
4857:
4858: sub get_all_adhocroles {
4859: my ($dom) = @_;
4860: my @roles_by_num = ();
4861: my %domdefaults = &get_domain_defaults($dom);
4862: my (%description,%access_in_dom,%access_info);
4863: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4864: my $count = 0;
4865: my %domcurrent = %{$domdefaults{'adhocroles'}};
4866: my %ordered;
4867: foreach my $role (sort(keys(%domcurrent))) {
4868: my ($order,$desc,$access_in_dom);
4869: if (ref($domcurrent{$role}) eq 'HASH') {
4870: $order = $domcurrent{$role}{'order'};
4871: $desc = $domcurrent{$role}{'desc'};
4872: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4873: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4874: }
4875: if ($order eq '') {
4876: $order = $count;
4877: }
4878: $ordered{$order} = $role;
4879: if ($desc ne '') {
4880: $description{$role} = $desc;
4881: } else {
4882: $description{$role}= $role;
4883: }
4884: $count++;
4885: }
4886: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4887: push(@roles_by_num,$ordered{$item});
4888: }
4889: }
4890: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4891: }
4892:
4893: sub get_my_adhocroles {
4894: my ($cid,$checkreg) = @_;
4895: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4896: if ($env{'request.course.id'} eq $cid) {
4897: $cdom = $env{'course.'.$cid.'.domain'};
4898: $cnum = $env{'course.'.$cid.'.num'};
4899: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4900: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4901: $cdom = $1;
4902: $cnum = $2;
4903: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4904: $cdom,$cnum);
4905: }
4906: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4907: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4908: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4909: if ($rosterhash{$user} ne '') {
4910: my $type = (split(/:/,$rosterhash{$user}))[5];
4911: return ([],{}) if ($type eq 'auto');
4912: }
4913: }
4914: if (($cdom ne '') && ($cnum ne '')) {
4915: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4916: my $then=$env{'user.login.time'};
4917: my $update=$env{'user.update.time'};
4918: if (!$update) {
4919: $update = $then;
4920: }
4921: my @liveroles;
4922: foreach my $role ('dh','da') {
4923: if ($env{"user.role.$role./$cdom/"}) {
4924: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4925: my $limit = $update;
4926: if ($env{'request.role'} eq "$role./$cdom/") {
4927: $limit = $then;
4928: }
4929: my $activerole = 1;
4930: if ($tstart && $tstart>$limit) { $activerole = 0; }
4931: if ($tend && $tend <$limit) { $activerole = 0; }
4932: if ($activerole) {
4933: push(@liveroles,$role);
4934: }
4935: }
4936: }
4937: if (@liveroles) {
4938: if (&homeserver($cnum,$cdom) ne 'no_host') {
4939: my ($accessref,$accessinfo,%access_in_dom);
4940: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4941: if (ref($roles_by_num) eq 'ARRAY') {
4942: if (@{$roles_by_num}) {
4943: my %settings;
4944: if ($env{'request.course.id'} eq $cid) {
4945: foreach my $envkey (keys(%env)) {
4946: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4947: $settings{$1} = $env{$envkey};
4948: }
4949: }
4950: } else {
4951: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4952: }
4953: my %setincrs;
4954: if ($settings{'internal.adhocaccess'}) {
4955: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4956: }
4957: my @statuses;
4958: if ($env{'environment.inststatus'}) {
4959: @statuses = split(/,/,$env{'environment.inststatus'});
4960: }
4961: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4962: if (ref($accessref) eq 'HASH') {
4963: %access_in_dom = %{$accessref};
4964: }
4965: foreach my $role (@{$roles_by_num}) {
4966: my ($curraccess,@okstatus,@personnel);
4967: if ($setincrs{$role}) {
4968: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4969: if ($curraccess eq 'status') {
4970: @okstatus = split(/\&/,$rest);
4971: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4972: @personnel = split(/\&/,$rest);
4973: }
4974: } else {
4975: $curraccess = $access_in_dom{$role};
4976: if (ref($accessinfo) eq 'HASH') {
4977: if ($curraccess eq 'status') {
4978: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4979: @okstatus = @{$accessinfo->{$role}};
4980: }
4981: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4982: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4983: @personnel = @{$accessinfo->{$role}};
4984: }
4985: }
4986: }
4987: }
4988: if ($curraccess eq 'none') {
4989: next;
4990: } elsif ($curraccess eq 'all') {
4991: push(@possroles,$role);
4992: } elsif ($curraccess eq 'dh') {
4993: if (grep(/^dh$/,@liveroles)) {
4994: push(@possroles,$role);
4995: } else {
4996: next;
4997: }
4998: } elsif ($curraccess eq 'da') {
4999: if (grep(/^da$/,@liveroles)) {
5000: push(@possroles,$role);
5001: } else {
5002: next;
5003: }
5004: } elsif ($curraccess eq 'status') {
5005: if (@okstatus) {
5006: if (!@statuses) {
5007: if (grep(/^default$/,@okstatus)) {
5008: push(@possroles,$role);
5009: }
5010: } else {
5011: foreach my $status (@okstatus) {
5012: if (grep(/^\Q$status\E$/,@statuses)) {
5013: push(@possroles,$role);
5014: last;
5015: }
5016: }
5017: }
5018: }
5019: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5020: if (grep(/^\Q$user\E$/,@personnel)) {
5021: if ($curraccess eq 'exc') {
5022: push(@possroles,$role);
5023: }
5024: } elsif ($curraccess eq 'inc') {
5025: push(@possroles,$role);
5026: }
5027: }
5028: }
5029: }
5030: }
5031: }
5032: }
5033: }
5034: }
5035: unless (ref($description) eq 'HASH') {
5036: if (ref($roles_by_num) eq 'ARRAY') {
5037: my %desc;
5038: map { $desc{$_} = $_; } (@{$roles_by_num});
5039: $description = \%desc;
5040: } else {
5041: $description = {};
5042: }
5043: }
5044: return (\@possroles,$description);
5045: }
5046:
5047: # ----------------------------------------------------- Frontpage Announcements
5048: #
5049: #
5050:
5051: sub postannounce {
5052: my ($server,$text)=@_;
5053: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5054: unless ($text=~/\w/) { $text=''; }
5055: return &reply('setannounce:'.&escape($text),$server);
5056: }
5057:
5058: sub getannounce {
5059:
5060: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5061: my $announcement='';
5062: while (my $line = <$fh>) { $announcement .= $line; }
5063: close($fh);
5064: if ($announcement=~/\w/) {
5065: return
5066: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5067: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5068: } else {
5069: return '';
5070: }
5071: } else {
5072: return '';
5073: }
5074: }
5075:
5076: # ---------------------------------------------------------- Course ID routines
5077: # Deal with domain's nohist_courseid.db files
5078: #
5079:
5080: sub courseidput {
5081: my ($domain,$storehash,$coursehome,$caller) = @_;
5082: return unless (ref($storehash) eq 'HASH');
5083: my $outcome;
5084: if ($caller eq 'timeonly') {
5085: my $cids = '';
5086: foreach my $item (keys(%$storehash)) {
5087: $cids.=&escape($item).'&';
5088: }
5089: $cids=~s/\&$//;
5090: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5091: $coursehome);
5092: } else {
5093: my $items = '';
5094: foreach my $item (keys(%$storehash)) {
5095: $items.= &escape($item).'='.
5096: &freeze_escape($$storehash{$item}).'&';
5097: }
5098: $items=~s/\&$//;
5099: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5100: $coursehome);
5101: }
5102: if ($outcome eq 'unknown_cmd') {
5103: my $what;
5104: foreach my $cid (keys(%$storehash)) {
5105: $what .= &escape($cid).'=';
5106: foreach my $item ('description','inst_code','owner','type') {
5107: $what .= &escape($storehash->{$cid}{$item}).':';
5108: }
5109: $what =~ s/\:$/&/;
5110: }
5111: $what =~ s/\&$//;
5112: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5113: } else {
5114: return $outcome;
5115: }
5116: }
5117:
5118: sub courseiddump {
5119: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5120: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5121: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5122: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5123: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5124: my $as_hash = 1;
5125: my %returnhash;
5126: if (!$domfilter) { $domfilter=''; }
5127: my %libserv = &all_library();
5128: foreach my $tryserver (keys(%libserv)) {
5129: if ( ( $hostidflag == 1
5130: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5131: || (!defined($hostidflag)) ) {
5132:
5133: if (($domfilter eq '') ||
5134: (&host_domain($tryserver) eq $domfilter)) {
5135: my $rep;
5136: if (grep { $_ eq $tryserver } current_machine_ids()) {
5137: $rep = LONCAPA::Lond::dump_course_id_handler(
5138: join(":", (&host_domain($tryserver), $sincefilter,
5139: &escape($descfilter), &escape($instcodefilter),
5140: &escape($ownerfilter), &escape($coursefilter),
5141: &escape($typefilter), &escape($regexp_ok),
5142: $as_hash, &escape($selfenrollonly),
5143: &escape($catfilter), $showhidden, $caller,
5144: &escape($cloner), &escape($cc_clone), $cloneonly,
5145: &escape($createdbefore), &escape($createdafter),
5146: &escape($creationcontext),$domcloner,$hasuniquecode,
5147: $reqcrsdom,&escape($reqinstcode))));
5148: } else {
5149: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5150: $sincefilter.':'.&escape($descfilter).':'.
5151: &escape($instcodefilter).':'.&escape($ownerfilter).
5152: ':'.&escape($coursefilter).':'.&escape($typefilter).
5153: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5154: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5155: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5156: &escape($cc_clone).':'.$cloneonly.':'.
5157: &escape($createdbefore).':'.&escape($createdafter).':'.
5158: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5159: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5160: }
5161:
5162: my @pairs=split(/\&/,$rep);
5163: foreach my $item (@pairs) {
5164: my ($key,$value)=split(/\=/,$item,2);
5165: $key = &unescape($key);
5166: next if ($key =~ /^error: 2 /);
5167: my $result = &thaw_unescape($value);
5168: if (ref($result) eq 'HASH') {
5169: $returnhash{$key}=$result;
5170: } else {
5171: my @responses = split(/:/,$value);
5172: my @items = ('description','inst_code','owner','type');
5173: for (my $i=0; $i<@responses; $i++) {
5174: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5175: }
5176: }
5177: }
5178: }
5179: }
5180: }
5181: return %returnhash;
5182: }
5183:
5184: sub courselastaccess {
5185: my ($cdom,$cnum,$hostidref) = @_;
5186: my %returnhash;
5187: if ($cdom && $cnum) {
5188: my $chome = &homeserver($cnum,$cdom);
5189: if ($chome ne 'no_host') {
5190: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5191: &extract_lastaccess(\%returnhash,$rep);
5192: }
5193: } else {
5194: if (!$cdom) { $cdom=''; }
5195: my %libserv = &all_library();
5196: foreach my $tryserver (keys(%libserv)) {
5197: if (ref($hostidref) eq 'ARRAY') {
5198: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5199: }
5200: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5201: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5202: &extract_lastaccess(\%returnhash,$rep);
5203: }
5204: }
5205: }
5206: return %returnhash;
5207: }
5208:
5209: sub extract_lastaccess {
5210: my ($returnhash,$rep) = @_;
5211: if (ref($returnhash) eq 'HASH') {
5212: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5213: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5214: $rep eq '') {
5215: my @pairs=split(/\&/,$rep);
5216: foreach my $item (@pairs) {
5217: my ($key,$value)=split(/\=/,$item,2);
5218: $key = &unescape($key);
5219: next if ($key =~ /^error: 2 /);
5220: $returnhash->{$key} = &thaw_unescape($value);
5221: }
5222: }
5223: }
5224: return;
5225: }
5226:
5227: # ---------------------------------------------------------- DC e-mail
5228:
5229: sub dcmailput {
5230: my ($domain,$msgid,$message,$server)=@_;
5231: my $status = &Apache::lonnet::critical(
5232: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5233: &escape($message),$server);
5234: return $status;
5235: }
5236:
5237: sub dcmaildump {
5238: my ($dom,$startdate,$enddate,$senders) = @_;
5239: my %returnhash=();
5240:
5241: if (defined(&domain($dom,'primary'))) {
5242: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5243: &escape($enddate).':';
5244: my @esc_senders=map { &escape($_)} @$senders;
5245: $cmd.=&escape(join('&',@esc_senders));
5246: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5247: my ($key,$value) = split(/\=/,$line,2);
5248: if (($key) && ($value)) {
5249: $returnhash{&unescape($key)} = &unescape($value);
5250: }
5251: }
5252: }
5253: return %returnhash;
5254: }
5255: # ---------------------------------------------------------- Domain roles
5256:
5257: sub get_domain_roles {
5258: my ($dom,$roles,$startdate,$enddate)=@_;
5259: if ((!defined($startdate)) || ($startdate eq '')) {
5260: $startdate = '.';
5261: }
5262: if ((!defined($enddate)) || ($enddate eq '')) {
5263: $enddate = '.';
5264: }
5265: my $rolelist;
5266: if (ref($roles) eq 'ARRAY') {
5267: $rolelist = join('&',@{$roles});
5268: }
5269: my %personnel = ();
5270:
5271: my %servers = &get_servers($dom,'library');
5272: foreach my $tryserver (keys(%servers)) {
5273: %{$personnel{$tryserver}}=();
5274: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5275: &escape($startdate).':'.
5276: &escape($enddate).':'.
5277: &escape($rolelist), $tryserver))) {
5278: my ($key,$value) = split(/\=/,$line,2);
5279: if (($key) && ($value)) {
5280: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5281: }
5282: }
5283: }
5284: return %personnel;
5285: }
5286:
5287: sub get_active_domroles {
5288: my ($dom,$roles) = @_;
5289: return () unless (ref($roles) eq 'ARRAY');
5290: my $now = time;
5291: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5292: my %domroles;
5293: foreach my $server (keys(%dompersonnel)) {
5294: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5295: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5296: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5297: }
5298: }
5299: return %domroles;
5300: }
5301:
5302: # ----------------------------------------------------------- Interval timing
5303:
5304: {
5305: # Caches needed for speedup of navmaps
5306: # We don't want to cache this for very long at all (5 seconds at most)
5307: #
5308: # The user for whom we cache
5309: my $cachedkey='';
5310: # The cached times for this user
5311: my %cachedtimes=();
5312: # When this was last done
5313: my $cachedtime='';
5314:
5315: sub load_all_first_access {
5316: my ($uname,$udom,$ignorecache)=@_;
5317: if (($cachedkey eq $uname.':'.$udom) &&
5318: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5319: (!$ignorecache)) {
5320: return;
5321: }
5322: $cachedtime=time;
5323: $cachedkey=$uname.':'.$udom;
5324: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5325: }
5326:
5327: sub get_first_access {
5328: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5329: my ($symb,$courseid,$udom,$uname)=&whichuser();
5330: if ($argsymb) { $symb=$argsymb; }
5331: my ($map,$id,$res)=&decode_symb($symb);
5332: if ($argmap) { $map = $argmap; }
5333: if ($type eq 'course') {
5334: $res='course';
5335: } elsif ($type eq 'map') {
5336: $res=&symbread($map);
5337: } else {
5338: $res=$symb;
5339: }
5340: &load_all_first_access($uname,$udom,$ignorecache);
5341: return $cachedtimes{"$courseid\0$res"};
5342: }
5343:
5344: sub set_first_access {
5345: my ($type,$interval)=@_;
5346: my ($symb,$courseid,$udom,$uname)=&whichuser();
5347: my ($map,$id,$res)=&decode_symb($symb);
5348: if ($type eq 'course') {
5349: $res='course';
5350: } elsif ($type eq 'map') {
5351: $res=&symbread($map);
5352: } else {
5353: $res=$symb;
5354: }
5355: $cachedkey='';
5356: my $firstaccess=&get_first_access($type,$symb,$map);
5357: if ($firstaccess) {
5358: &logthis("First access time already set ($firstaccess) when attempting ".
5359: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5360: "in $courseid");
5361: return 'already_set';
5362: } else {
5363: my $start = time;
5364: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5365: $udom,$uname);
5366: if ($putres eq 'ok') {
5367: &put('timerinterval',{"$courseid\0$res"=>$interval},
5368: $udom,$uname);
5369: &appenv(
5370: {
5371: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5372: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5373: }
5374: );
5375: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5376: $cachedtimes{"$courseid\0$res"} = $start;
5377: }
5378: } elsif ($putres ne 'refused') {
5379: &logthis("Result: $putres when attempting to set first access time ".
5380: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5381: }
5382: return $putres;
5383: }
5384: return 'already_set';
5385: }
5386: }
5387:
5388: # --------------------------------------------- Set Expire Date for Spreadsheet
5389:
5390: sub expirespread {
5391: my ($uname,$udom,$stype,$usymb)=@_;
5392: my $cid=$env{'request.course.id'};
5393: if ($cid) {
5394: my $now=time;
5395: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5396: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5397: $env{'course.'.$cid.'.num'}.
5398: ':nohist_expirationdates:'.
5399: &escape($key).'='.$now,
5400: $env{'course.'.$cid.'.home'})
5401: }
5402: return 'ok';
5403: }
5404:
5405: # ----------------------------------------------------- Devalidate Spreadsheets
5406:
5407: sub devalidate {
5408: my ($symb,$uname,$udom)=@_;
5409: my $cid=$env{'request.course.id'};
5410: if ($cid) {
5411: # delete the stored spreadsheets for
5412: # - the student level sheet of this user in course's homespace
5413: # - the assessment level sheet for this resource
5414: # for this user in user's homespace
5415: # - current conditional state info
5416: my $key=$uname.':'.$udom.':';
5417: my $status=
5418: &del('nohist_calculatedsheets',
5419: [$key.'studentcalc:'],
5420: $env{'course.'.$cid.'.domain'},
5421: $env{'course.'.$cid.'.num'})
5422: .' '.
5423: &del('nohist_calculatedsheets_'.$cid,
5424: [$key.'assesscalc:'.$symb],$udom,$uname);
5425: unless ($status eq 'ok ok') {
5426: &logthis('Could not devalidate spreadsheet '.
5427: $uname.' at '.$udom.' for '.
5428: $symb.': '.$status);
5429: }
5430: &delenv('user.state.'.$cid);
5431: }
5432: }
5433:
5434: sub get_scalar {
5435: my ($string,$end) = @_;
5436: my $value;
5437: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5438: $value = $1;
5439: } elsif ($$string =~ s/^([^&]*?)&//) {
5440: $value = $1;
5441: }
5442: return &unescape($value);
5443: }
5444:
5445: sub array2str {
5446: my (@array) = @_;
5447: my $result=&arrayref2str(\@array);
5448: $result=~s/^__ARRAY_REF__//;
5449: $result=~s/__END_ARRAY_REF__$//;
5450: return $result;
5451: }
5452:
5453: sub arrayref2str {
5454: my ($arrayref) = @_;
5455: my $result='__ARRAY_REF__';
5456: foreach my $elem (@$arrayref) {
5457: if(ref($elem) eq 'ARRAY') {
5458: $result.=&arrayref2str($elem).'&';
5459: } elsif(ref($elem) eq 'HASH') {
5460: $result.=&hashref2str($elem).'&';
5461: } elsif(ref($elem)) {
5462: #print("Got a ref of ".(ref($elem))." skipping.");
5463: } else {
5464: $result.=&escape($elem).'&';
5465: }
5466: }
5467: $result=~s/\&$//;
5468: $result .= '__END_ARRAY_REF__';
5469: return $result;
5470: }
5471:
5472: sub hash2str {
5473: my (%hash) = @_;
5474: my $result=&hashref2str(\%hash);
5475: $result=~s/^__HASH_REF__//;
5476: $result=~s/__END_HASH_REF__$//;
5477: return $result;
5478: }
5479:
5480: sub hashref2str {
5481: my ($hashref)=@_;
5482: my $result='__HASH_REF__';
5483: foreach my $key (sort(keys(%$hashref))) {
5484: if (ref($key) eq 'ARRAY') {
5485: $result.=&arrayref2str($key).'=';
5486: } elsif (ref($key) eq 'HASH') {
5487: $result.=&hashref2str($key).'=';
5488: } elsif (ref($key)) {
5489: $result.='=';
5490: #print("Got a ref of ".(ref($key))." skipping.");
5491: } else {
5492: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5493: }
5494:
5495: if(ref($hashref->{$key}) eq 'ARRAY') {
5496: $result.=&arrayref2str($hashref->{$key}).'&';
5497: } elsif(ref($hashref->{$key}) eq 'HASH') {
5498: $result.=&hashref2str($hashref->{$key}).'&';
5499: } elsif(ref($hashref->{$key})) {
5500: $result.='&';
5501: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5502: } else {
5503: $result.=&escape($hashref->{$key}).'&';
5504: }
5505: }
5506: $result=~s/\&$//;
5507: $result .= '__END_HASH_REF__';
5508: return $result;
5509: }
5510:
5511: sub str2hash {
5512: my ($string)=@_;
5513: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5514: return %$hash;
5515: }
5516:
5517: sub str2hashref {
5518: my ($string) = @_;
5519:
5520: my %hash;
5521:
5522: if($string !~ /^__HASH_REF__/) {
5523: if (! ($string eq '' || !defined($string))) {
5524: $hash{'error'}='Not hash reference';
5525: }
5526: return (\%hash, $string);
5527: }
5528:
5529: $string =~ s/^__HASH_REF__//;
5530:
5531: while($string !~ /^__END_HASH_REF__/) {
5532: #key
5533: my $key='';
5534: if($string =~ /^__HASH_REF__/) {
5535: ($key, $string)=&str2hashref($string);
5536: if(defined($key->{'error'})) {
5537: $hash{'error'}='Bad data';
5538: return (\%hash, $string);
5539: }
5540: } elsif($string =~ /^__ARRAY_REF__/) {
5541: ($key, $string)=&str2arrayref($string);
5542: if($key->[0] eq 'Array reference error') {
5543: $hash{'error'}='Bad data';
5544: return (\%hash, $string);
5545: }
5546: } else {
5547: $string =~ s/^(.*?)=//;
5548: $key=&unescape($1);
5549: }
5550: $string =~ s/^=//;
5551:
5552: #value
5553: my $value='';
5554: if($string =~ /^__HASH_REF__/) {
5555: ($value, $string)=&str2hashref($string);
5556: if(defined($value->{'error'})) {
5557: $hash{'error'}='Bad data';
5558: return (\%hash, $string);
5559: }
5560: } elsif($string =~ /^__ARRAY_REF__/) {
5561: ($value, $string)=&str2arrayref($string);
5562: if($value->[0] eq 'Array reference error') {
5563: $hash{'error'}='Bad data';
5564: return (\%hash, $string);
5565: }
5566: } else {
5567: $value=&get_scalar(\$string,'__END_HASH_REF__');
5568: }
5569: $string =~ s/^&//;
5570:
5571: $hash{$key}=$value;
5572: }
5573:
5574: $string =~ s/^__END_HASH_REF__//;
5575:
5576: return (\%hash, $string);
5577: }
5578:
5579: sub str2array {
5580: my ($string)=@_;
5581: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5582: return @$array;
5583: }
5584:
5585: sub str2arrayref {
5586: my ($string) = @_;
5587: my @array;
5588:
5589: if($string !~ /^__ARRAY_REF__/) {
5590: if (! ($string eq '' || !defined($string))) {
5591: $array[0]='Array reference error';
5592: }
5593: return (\@array, $string);
5594: }
5595:
5596: $string =~ s/^__ARRAY_REF__//;
5597:
5598: while($string !~ /^__END_ARRAY_REF__/) {
5599: my $value='';
5600: if($string =~ /^__HASH_REF__/) {
5601: ($value, $string)=&str2hashref($string);
5602: if(defined($value->{'error'})) {
5603: $array[0] ='Array reference error';
5604: return (\@array, $string);
5605: }
5606: } elsif($string =~ /^__ARRAY_REF__/) {
5607: ($value, $string)=&str2arrayref($string);
5608: if($value->[0] eq 'Array reference error') {
5609: $array[0] ='Array reference error';
5610: return (\@array, $string);
5611: }
5612: } else {
5613: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5614: }
5615: $string =~ s/^&//;
5616:
5617: push(@array, $value);
5618: }
5619:
5620: $string =~ s/^__END_ARRAY_REF__//;
5621:
5622: return (\@array, $string);
5623: }
5624:
5625: # -------------------------------------------------------------------Temp Store
5626:
5627: sub tmpreset {
5628: my ($symb,$namespace,$domain,$stuname) = @_;
5629: if (!$symb) {
5630: $symb=&symbread();
5631: if (!$symb) { $symb= $env{'request.url'}; }
5632: }
5633: $symb=escape($symb);
5634:
5635: if (!$namespace) { $namespace=$env{'request.state'}; }
5636: $namespace=~s/\//\_/g;
5637: $namespace=~s/\W//g;
5638:
5639: if (!$domain) { $domain=$env{'user.domain'}; }
5640: if (!$stuname) { $stuname=$env{'user.name'}; }
5641: if ($domain eq 'public' && $stuname eq 'public') {
5642: $stuname=$ENV{'REMOTE_ADDR'};
5643: }
5644: my $path=LONCAPA::tempdir();
5645: my %hash;
5646: if (tie(%hash,'GDBM_File',
5647: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5648: &GDBM_WRCREAT(),0640)) {
5649: foreach my $key (keys(%hash)) {
5650: if ($key=~ /:$symb/) {
5651: delete($hash{$key});
5652: }
5653: }
5654: }
5655: }
5656:
5657: sub tmpstore {
5658: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5659:
5660: if (!$symb) {
5661: $symb=&symbread();
5662: if (!$symb) { $symb= $env{'request.url'}; }
5663: }
5664: $symb=escape($symb);
5665:
5666: if (!$namespace) {
5667: # I don't think we would ever want to store this for a course.
5668: # it seems this will only be used if we don't have a course.
5669: #$namespace=$env{'request.course.id'};
5670: #if (!$namespace) {
5671: $namespace=$env{'request.state'};
5672: #}
5673: }
5674: $namespace=~s/\//\_/g;
5675: $namespace=~s/\W//g;
5676: if (!$domain) { $domain=$env{'user.domain'}; }
5677: if (!$stuname) { $stuname=$env{'user.name'}; }
5678: if ($domain eq 'public' && $stuname eq 'public') {
5679: $stuname=$ENV{'REMOTE_ADDR'};
5680: }
5681: my $now=time;
5682: my %hash;
5683: my $path=LONCAPA::tempdir();
5684: if (tie(%hash,'GDBM_File',
5685: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5686: &GDBM_WRCREAT(),0640)) {
5687: $hash{"version:$symb"}++;
5688: my $version=$hash{"version:$symb"};
5689: my $allkeys='';
5690: foreach my $key (keys(%$storehash)) {
5691: $allkeys.=$key.':';
5692: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5693: }
5694: $hash{"$version:$symb:timestamp"}=$now;
5695: $allkeys.='timestamp';
5696: $hash{"$version:keys:$symb"}=$allkeys;
5697: if (untie(%hash)) {
5698: return 'ok';
5699: } else {
5700: return "error:$!";
5701: }
5702: } else {
5703: return "error:$!";
5704: }
5705: }
5706:
5707: # -----------------------------------------------------------------Temp Restore
5708:
5709: sub tmprestore {
5710: my ($symb,$namespace,$domain,$stuname) = @_;
5711:
5712: if (!$symb) {
5713: $symb=&symbread();
5714: if (!$symb) { $symb= $env{'request.url'}; }
5715: }
5716: $symb=escape($symb);
5717:
5718: if (!$namespace) { $namespace=$env{'request.state'}; }
5719:
5720: if (!$domain) { $domain=$env{'user.domain'}; }
5721: if (!$stuname) { $stuname=$env{'user.name'}; }
5722: if ($domain eq 'public' && $stuname eq 'public') {
5723: $stuname=$ENV{'REMOTE_ADDR'};
5724: }
5725: my %returnhash;
5726: $namespace=~s/\//\_/g;
5727: $namespace=~s/\W//g;
5728: my %hash;
5729: my $path=LONCAPA::tempdir();
5730: if (tie(%hash,'GDBM_File',
5731: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5732: &GDBM_READER(),0640)) {
5733: my $version=$hash{"version:$symb"};
5734: $returnhash{'version'}=$version;
5735: my $scope;
5736: for ($scope=1;$scope<=$version;$scope++) {
5737: my $vkeys=$hash{"$scope:keys:$symb"};
5738: my @keys=split(/:/,$vkeys);
5739: my $key;
5740: $returnhash{"$scope:keys"}=$vkeys;
5741: foreach $key (@keys) {
5742: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5743: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5744: }
5745: }
5746: if (!(untie(%hash))) {
5747: return "error:$!";
5748: }
5749: } else {
5750: return "error:$!";
5751: }
5752: return %returnhash;
5753: }
5754:
5755: # ----------------------------------------------------------------------- Store
5756:
5757: sub store {
5758: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5759: my $home='';
5760:
5761: if ($stuname) { $home=&homeserver($stuname,$domain); }
5762:
5763: $symb=&symbclean($symb);
5764: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5765:
5766: if (!$domain) { $domain=$env{'user.domain'}; }
5767: if (!$stuname) { $stuname=$env{'user.name'}; }
5768:
5769: &devalidate($symb,$stuname,$domain);
5770:
5771: $symb=escape($symb);
5772: if (!$namespace) {
5773: unless ($namespace=$env{'request.course.id'}) {
5774: return '';
5775: }
5776: }
5777: if (!$home) { $home=$env{'user.home'}; }
5778:
5779: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5780: $$storehash{'host'}=$perlvar{'lonHostID'};
5781:
5782: my $namevalue='';
5783: foreach my $key (keys(%$storehash)) {
5784: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5785: }
5786: $namevalue=~s/\&$//;
5787: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5788: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5789: }
5790:
5791: # -------------------------------------------------------------- Critical Store
5792:
5793: sub cstore {
5794: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5795: my $home='';
5796:
5797: if ($stuname) { $home=&homeserver($stuname,$domain); }
5798:
5799: $symb=&symbclean($symb);
5800: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5801:
5802: if (!$domain) { $domain=$env{'user.domain'}; }
5803: if (!$stuname) { $stuname=$env{'user.name'}; }
5804:
5805: &devalidate($symb,$stuname,$domain);
5806:
5807: $symb=escape($symb);
5808: if (!$namespace) {
5809: unless ($namespace=$env{'request.course.id'}) {
5810: return '';
5811: }
5812: }
5813: if (!$home) { $home=$env{'user.home'}; }
5814:
5815: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5816: $$storehash{'host'}=$perlvar{'lonHostID'};
5817:
5818: my $namevalue='';
5819: foreach my $key (keys(%$storehash)) {
5820: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5821: }
5822: $namevalue=~s/\&$//;
5823: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5824: return critical
5825: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5826: }
5827:
5828: # --------------------------------------------------------------------- Restore
5829:
5830: sub restore {
5831: my ($symb,$namespace,$domain,$stuname) = @_;
5832: my $home='';
5833:
5834: if ($stuname) { $home=&homeserver($stuname,$domain); }
5835:
5836: if (!$symb) {
5837: return if ($namespace eq 'courserequests');
5838: unless ($symb=escape(&symbread())) { return ''; }
5839: } else {
5840: unless ($namespace eq 'courserequests') {
5841: $symb=&escape(&symbclean($symb));
5842: }
5843: }
5844: if (!$namespace) {
5845: unless ($namespace=$env{'request.course.id'}) {
5846: return '';
5847: }
5848: }
5849: if (!$domain) { $domain=$env{'user.domain'}; }
5850: if (!$stuname) { $stuname=$env{'user.name'}; }
5851: if (!$home) { $home=$env{'user.home'}; }
5852: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5853:
5854: my %returnhash=();
5855: foreach my $line (split(/\&/,$answer)) {
5856: my ($name,$value)=split(/\=/,$line);
5857: $returnhash{&unescape($name)}=&thaw_unescape($value);
5858: }
5859: my $version;
5860: for ($version=1;$version<=$returnhash{'version'};$version++) {
5861: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5862: $returnhash{$item}=$returnhash{$version.':'.$item};
5863: }
5864: }
5865: return %returnhash;
5866: }
5867:
5868: # ---------------------------------------------------------- Course Description
5869: #
5870: #
5871:
5872: sub coursedescription {
5873: my ($courseid,$args)=@_;
5874: $courseid=~s/^\///;
5875: $courseid=~s/\_/\//g;
5876: my ($cdomain,$cnum)=split(/\//,$courseid);
5877: my $chome=&homeserver($cnum,$cdomain);
5878: my $normalid=$cdomain.'_'.$cnum;
5879: # need to always cache even if we get errors otherwise we keep
5880: # trying and trying and trying to get the course description.
5881: my %envhash=();
5882: my %returnhash=();
5883:
5884: my $expiretime=600;
5885: if ($env{'request.course.id'} eq $normalid) {
5886: $expiretime=120;
5887: }
5888:
5889: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5890: if (!$args->{'freshen_cache'}
5891: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5892: foreach my $key (keys(%env)) {
5893: next if ($key !~ /^\Q$prefix\E(.*)/);
5894: my ($setting) = $1;
5895: $returnhash{$setting} = $env{$key};
5896: }
5897: return %returnhash;
5898: }
5899:
5900: # get the data again
5901:
5902: if (!$args->{'one_time'}) {
5903: $envhash{'course.'.$normalid.'.last_cache'}=time;
5904: }
5905:
5906: if ($chome ne 'no_host') {
5907: %returnhash=&dump('environment',$cdomain,$cnum);
5908: if (!exists($returnhash{'con_lost'})) {
5909: my $username = $env{'user.name'}; # Defult username
5910: if(defined $args->{'user'}) {
5911: $username = $args->{'user'};
5912: }
5913: $returnhash{'home'}= $chome;
5914: $returnhash{'domain'} = $cdomain;
5915: $returnhash{'num'} = $cnum;
5916: if (!defined($returnhash{'type'})) {
5917: $returnhash{'type'} = 'Course';
5918: }
5919: while (my ($name,$value) = each %returnhash) {
5920: $envhash{'course.'.$normalid.'.'.$name}=$value;
5921: }
5922: $returnhash{'url'}=&clutter($returnhash{'url'});
5923: $returnhash{'fn'}=LONCAPA::tempdir() .
5924: $username.'_'.$cdomain.'_'.$cnum;
5925: $envhash{'course.'.$normalid.'.home'}=$chome;
5926: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5927: $envhash{'course.'.$normalid.'.num'}=$cnum;
5928: }
5929: }
5930: if (!$args->{'one_time'}) {
5931: &appenv(\%envhash);
5932: }
5933: return %returnhash;
5934: }
5935:
5936: sub update_released_required {
5937: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5938: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5939: $cid = $env{'request.course.id'};
5940: $cdom = $env{'course.'.$cid.'.domain'};
5941: $cnum = $env{'course.'.$cid.'.num'};
5942: $chome = $env{'course.'.$cid.'.home'};
5943: }
5944: if ($needsrelease) {
5945: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5946: my $needsupdate;
5947: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5948: $needsupdate = 1;
5949: } else {
5950: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5951: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5952: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5953: $needsupdate = 1;
5954: }
5955: }
5956: if ($needsupdate) {
5957: my %needshash = (
5958: 'internal.releaserequired' => $needsrelease,
5959: );
5960: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5961: if ($putresult eq 'ok') {
5962: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5963: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5964: if (ref($crsinfo{$cid}) eq 'HASH') {
5965: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5966: &courseidput($cdom,\%crsinfo,$chome,'notime');
5967: }
5968: }
5969: }
5970: }
5971: return;
5972: }
5973:
5974: # -------------------------------------------------See if a user is privileged
5975:
5976: sub privileged {
5977: my ($username,$domain,$possdomains,$possroles)=@_;
5978: my $now = time;
5979: my $roles;
5980: if (ref($possroles) eq 'ARRAY') {
5981: $roles = $possroles;
5982: } else {
5983: $roles = ['dc','su'];
5984: }
5985: if (ref($possdomains) eq 'ARRAY') {
5986: my %privileged = &privileged_by_domain($possdomains,$roles);
5987: foreach my $dom (@{$possdomains}) {
5988: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5989: (ref($privileged{$dom}) eq 'HASH')) {
5990: foreach my $role (@{$roles}) {
5991: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5992: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5993: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5994: return 1 unless (($end && $end < $now) ||
5995: ($start && $start > $now));
5996: }
5997: }
5998: }
5999: }
6000: }
6001: } else {
6002: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6003: my $now = time;
6004:
6005: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6006: my ($trole, $tend, $tstart) = split(/_/, $role);
6007: if (grep(/^\Q$trole\E$/,@{$roles})) {
6008: return 1 unless ($tend && $tend < $now)
6009: or ($tstart && $tstart > $now);
6010: }
6011: }
6012: }
6013: return 0;
6014: }
6015:
6016: sub privileged_by_domain {
6017: my ($domains,$roles) = @_;
6018: my %privileged = ();
6019: my $cachetime = 60*60*24;
6020: my $now = time;
6021: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6022: return %privileged;
6023: }
6024: foreach my $dom (@{$domains}) {
6025: next if (ref($privileged{$dom}) eq 'HASH');
6026: my $needroles;
6027: foreach my $role (@{$roles}) {
6028: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6029: if (defined($cached)) {
6030: if (ref($result) eq 'HASH') {
6031: $privileged{$dom}{$role} = $result;
6032: }
6033: } else {
6034: $needroles = 1;
6035: }
6036: }
6037: if ($needroles) {
6038: my %dompersonnel = &get_domain_roles($dom,$roles);
6039: $privileged{$dom} = {};
6040: foreach my $server (keys(%dompersonnel)) {
6041: if (ref($dompersonnel{$server}) eq 'HASH') {
6042: foreach my $item (keys(%{$dompersonnel{$server}})) {
6043: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6044: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6045: next if ($end && $end < $now);
6046: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6047: $dompersonnel{$server}{$item};
6048: }
6049: }
6050: }
6051: if (ref($privileged{$dom}) eq 'HASH') {
6052: foreach my $role (@{$roles}) {
6053: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6054: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6055: } else {
6056: my %hash = ();
6057: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6058: }
6059: }
6060: }
6061: }
6062: }
6063: return %privileged;
6064: }
6065:
6066: # -------------------------------------------------------- Get user privileges
6067:
6068: sub rolesinit {
6069: my ($domain, $username) = @_;
6070: my %userroles = ('user.login.time' => time);
6071: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6072:
6073: # firstaccess and timerinterval are related to timed maps/resources.
6074: # also, blocking can be triggered by an activating timer
6075: # it's saved in the user's %env.
6076: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6077: my %timerinterval = &dump('timerinterval', $domain, $username);
6078: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6079: %timerintchk, %timerintenv);
6080:
6081: foreach my $key (keys(%firstaccess)) {
6082: my ($cid, $rest) = split(/\0/, $key);
6083: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6084: }
6085:
6086: foreach my $key (keys(%timerinterval)) {
6087: my ($cid,$rest) = split(/\0/,$key);
6088: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6089: }
6090:
6091: my %allroles=();
6092: my %allgroups=();
6093:
6094: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6095: my $role = $rolesdump{$area};
6096: $area =~ s/\_\w\w$//;
6097:
6098: my ($trole, $tend, $tstart, $group_privs);
6099:
6100: if ($role =~ /^cr/) {
6101: # Custom role, defined by a user
6102: # e.g., user.role.cr/msu/smith/mynewrole
6103: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6104: $trole = $1;
6105: ($tend, $tstart) = split('_', $2);
6106: } else {
6107: $trole = $role;
6108: }
6109: } elsif ($role =~ m|^gr/|) {
6110: # Role of member in a group, defined within a course/community
6111: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6112: ($trole, $tend, $tstart) = split(/_/, $role);
6113: next if $tstart eq '-1';
6114: ($trole, $group_privs) = split(/\//, $trole);
6115: $group_privs = &unescape($group_privs);
6116: } else {
6117: # Just a normal role, defined in roles.tab
6118: ($trole, $tend, $tstart) = split(/_/,$role);
6119: }
6120:
6121: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6122: $username);
6123: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6124:
6125: # role expired or not available yet?
6126: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6127: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6128:
6129: next if $area eq '' or $trole eq '';
6130:
6131: my $spec = "$trole.$area";
6132: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6133:
6134: if ($trole =~ /^cr\//) {
6135: # Custom role, defined by a user
6136: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6137: } elsif ($trole eq 'gr') {
6138: # Role of a member in a group, defined within a course/community
6139: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6140: next;
6141: } else {
6142: # Normal role, defined in roles.tab
6143: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6144: }
6145:
6146: my $cid = $tdomain.'_'.$trest;
6147: unless ($firstaccchk{$cid}) {
6148: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6149: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6150: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6151: $coursetimerstarts{$cid}{$item};
6152: }
6153: }
6154: $firstaccchk{$cid} = 1;
6155: }
6156: unless ($timerintchk{$cid}) {
6157: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6158: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6159: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6160: $coursetimerintervals{$cid}{$item};
6161: }
6162: }
6163: $timerintchk{$cid} = 1;
6164: }
6165: }
6166:
6167: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6168: \%allroles, \%allgroups);
6169: $env{'user.adv'} = $userroles{'user.adv'};
6170: $env{'user.rar'} = $userroles{'user.rar'};
6171:
6172: return (\%userroles,\%firstaccenv,\%timerintenv);
6173: }
6174:
6175: sub set_arearole {
6176: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6177: unless ($nolog) {
6178: # log the associated role with the area
6179: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6180: }
6181: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6182: }
6183:
6184: sub custom_roleprivs {
6185: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6186: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6187: my $homsvr = &homeserver($rauthor,$rdomain);
6188: if (&hostname($homsvr) ne '') {
6189: my ($rdummy,$roledef)=
6190: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6191: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6192: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6193: if (defined($syspriv)) {
6194: if ($trest =~ /^$match_community$/) {
6195: $syspriv =~ s/bre\&S//;
6196: }
6197: $$allroles{'cm./'}.=':'.$syspriv;
6198: $$allroles{$spec.'./'}.=':'.$syspriv;
6199: }
6200: if ($tdomain ne '') {
6201: if (defined($dompriv)) {
6202: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6203: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6204: }
6205: if (($trest ne '') && (defined($coursepriv))) {
6206: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6207: my $rolename = $1;
6208: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6209: }
6210: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6211: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6212: }
6213: }
6214: }
6215: }
6216: }
6217:
6218: sub course_adhocrole_privs {
6219: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6220: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6221: if ($overrides{"internal.adhocpriv.$rolename"}) {
6222: my (%currprivs,%storeprivs);
6223: foreach my $item (split(/:/,$coursepriv)) {
6224: my ($priv,$restrict) = split(/\&/,$item);
6225: $currprivs{$priv} = $restrict;
6226: }
6227: my (%possadd,%possremove,%full);
6228: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6229: my ($priv,$restrict)=split(/\&/,$item);
6230: $full{$priv} = $restrict;
6231: }
6232: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6233: next if ($item eq '');
6234: my ($rule,$rest) = split(/=/,$item);
6235: next unless (($rule eq 'off') || ($rule eq 'on'));
6236: foreach my $priv (split(/:/,$rest)) {
6237: if ($priv ne '') {
6238: if ($rule eq 'off') {
6239: $possremove{$priv} = 1;
6240: } else {
6241: $possadd{$priv} = 1;
6242: }
6243: }
6244: }
6245: }
6246: foreach my $priv (sort(keys(%full))) {
6247: if (exists($currprivs{$priv})) {
6248: unless (exists($possremove{$priv})) {
6249: $storeprivs{$priv} = $currprivs{$priv};
6250: }
6251: } elsif (exists($possadd{$priv})) {
6252: $storeprivs{$priv} = $full{$priv};
6253: }
6254: }
6255: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6256: }
6257: return $coursepriv;
6258: }
6259:
6260: sub group_roleprivs {
6261: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6262: my $access = 1;
6263: my $now = time;
6264: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6265: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6266: if ($access) {
6267: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6268: $$allgroups{$course}{$group} .=':'.$group_privs;
6269: }
6270: }
6271:
6272: sub standard_roleprivs {
6273: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6274: if (defined($pr{$trole.':s'})) {
6275: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6276: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6277: }
6278: if ($tdomain ne '') {
6279: if (defined($pr{$trole.':d'})) {
6280: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6281: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6282: }
6283: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6284: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6285: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6286: }
6287: }
6288: }
6289:
6290: sub set_userprivs {
6291: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6292: my $author=0;
6293: my $adv=0;
6294: my $rar=0;
6295: my %grouproles = ();
6296: if (keys(%{$allgroups}) > 0) {
6297: my @groupkeys;
6298: foreach my $role (keys(%{$allroles})) {
6299: push(@groupkeys,$role);
6300: }
6301: if (ref($groups_roles) eq 'HASH') {
6302: foreach my $key (keys(%{$groups_roles})) {
6303: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6304: push(@groupkeys,$key);
6305: }
6306: }
6307: }
6308: if (@groupkeys > 0) {
6309: foreach my $role (@groupkeys) {
6310: my ($trole,$area,$sec,$extendedarea);
6311: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6312: $trole = $1;
6313: $area = $2;
6314: $sec = $3;
6315: $extendedarea = $area.$sec;
6316: if (exists($$allgroups{$area})) {
6317: foreach my $group (keys(%{$$allgroups{$area}})) {
6318: my $spec = $trole.'.'.$extendedarea;
6319: $grouproles{$spec.'.'.$area.'/'.$group} =
6320: $$allgroups{$area}{$group};
6321: }
6322: }
6323: }
6324: }
6325: }
6326: }
6327: foreach my $group (keys(%grouproles)) {
6328: $$allroles{$group} = $grouproles{$group};
6329: }
6330: foreach my $role (keys(%{$allroles})) {
6331: my %thesepriv;
6332: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6333: foreach my $item (split(/:/,$$allroles{$role})) {
6334: if ($item ne '') {
6335: my ($privilege,$restrictions)=split(/&/,$item);
6336: if ($restrictions eq '') {
6337: $thesepriv{$privilege}='F';
6338: } elsif ($thesepriv{$privilege} ne 'F') {
6339: $thesepriv{$privilege}.=$restrictions;
6340: }
6341: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6342: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6343: }
6344: }
6345: my $thesestr='';
6346: foreach my $priv (sort(keys(%thesepriv))) {
6347: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6348: }
6349: $userroles->{'user.priv.'.$role} = $thesestr;
6350: }
6351: return ($author,$adv,$rar);
6352: }
6353:
6354: sub role_status {
6355: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6356: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6357: my ($one,$two) = split(m{\./},$rolekey,2);
6358: (undef,undef,$$role) = split(/\./,$one,3);
6359: unless (!defined($$role) || $$role eq '') {
6360: $$where = '/'.$two;
6361: $$trolecode=$$role.'.'.$$where;
6362: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6363: $$tstatus='is';
6364: if ($$tstart && $$tstart>$update) {
6365: $$tstatus='future';
6366: if ($$tstart<$now) {
6367: if ($$tstart && $$tstart>$refresh) {
6368: if (($$where ne '') && ($$role ne '')) {
6369: my (%allroles,%allgroups,$group_privs,
6370: %groups_roles,@rolecodes);
6371: my %userroles = (
6372: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6373: );
6374: @rolecodes = ('cm');
6375: my $spec=$$role.'.'.$$where;
6376: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6377: if ($$role =~ /^cr\//) {
6378: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6379: push(@rolecodes,'cr');
6380: } elsif ($$role eq 'gr') {
6381: push(@rolecodes,$$role);
6382: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6383: $env{'user.name'});
6384: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6385: (undef,my $group_privs) = split(/\//,$trole);
6386: $group_privs = &unescape($group_privs);
6387: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6388: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6389: &get_groups_roles($tdomain,$trest,
6390: \%course_roles,\@rolecodes,
6391: \%groups_roles);
6392: } else {
6393: push(@rolecodes,$$role);
6394: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6395: }
6396: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6397: \%groups_roles);
6398: &appenv(\%userroles,\@rolecodes);
6399: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6400: }
6401: }
6402: $$tstatus = 'is';
6403: }
6404: }
6405: if ($$tend) {
6406: if ($$tend<$update) {
6407: $$tstatus='expired';
6408: } elsif ($$tend<$now) {
6409: $$tstatus='will_not';
6410: }
6411: }
6412: }
6413: }
6414: }
6415:
6416: sub get_groups_roles {
6417: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6418: return unless((ref($cdom_courseroles) eq 'HASH') &&
6419: (ref($rolecodes) eq 'ARRAY') &&
6420: (ref($groups_roles) eq 'HASH'));
6421: if (keys(%{$cdom_courseroles}) > 0) {
6422: my ($cnum) = ($rest =~ /^($match_courseid)/);
6423: if ($cdom ne '' && $cnum ne '') {
6424: foreach my $key (keys(%{$cdom_courseroles})) {
6425: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6426: my $crsrole = $1;
6427: my $crssec = $2;
6428: if ($crsrole =~ /^cr/) {
6429: unless (grep(/^cr$/,@{$rolecodes})) {
6430: push(@{$rolecodes},'cr');
6431: }
6432: } else {
6433: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6434: push(@{$rolecodes},$crsrole);
6435: }
6436: }
6437: my $rolekey = "$crsrole./$cdom/$cnum";
6438: if ($crssec ne '') {
6439: $rolekey .= "/$crssec";
6440: }
6441: $rolekey .= './';
6442: $groups_roles->{$rolekey} = $rolecodes;
6443: }
6444: }
6445: }
6446: }
6447: return;
6448: }
6449:
6450: sub delete_env_groupprivs {
6451: my ($where,$courseroles,$possroles) = @_;
6452: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6453: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6454: unless (ref($courseroles->{$udom}) eq 'HASH') {
6455: %{$courseroles->{$udom}} =
6456: &get_my_roles('','','userroles',['active'],
6457: $possroles,[$udom],1);
6458: }
6459: if (ref($courseroles->{$udom}) eq 'HASH') {
6460: foreach my $item (keys(%{$courseroles->{$udom}})) {
6461: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6462: my $area = '/'.$cdom.'/'.$cnum;
6463: my $privkey = "user.priv.$crsrole.$area";
6464: if ($crssec ne '') {
6465: $privkey .= '/'.$crssec;
6466: }
6467: $privkey .= ".$area/$group";
6468: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6469: }
6470: }
6471: return;
6472: }
6473:
6474: sub check_adhoc_privs {
6475: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6476: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6477: if ($sec) {
6478: $cckey .= '/'.$sec;
6479: }
6480: my $setprivs;
6481: if ($env{$cckey}) {
6482: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6483: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6484: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6485: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6486: $setprivs = 1;
6487: }
6488: } else {
6489: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6490: $setprivs = 1;
6491: }
6492: return $setprivs;
6493: }
6494:
6495: sub set_adhoc_privileges {
6496: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6497: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6498: my $area = '/'.$dcdom.'/'.$pickedcourse;
6499: if ($sec ne '') {
6500: $area .= '/'.$sec;
6501: }
6502: my $spec = $role.'.'.$area;
6503: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6504: $env{'user.name'},1);
6505: my %rolehash = ();
6506: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6507: my $rolename = $1;
6508: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6509: my %domdef = &get_domain_defaults($dcdom);
6510: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6511: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6512: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6513: }
6514: }
6515: } else {
6516: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6517: }
6518: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6519: &appenv(\%userroles,[$role,'cm']);
6520: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6521: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6522: &appenv( {'request.role' => $spec,
6523: 'request.role.domain' => $dcdom,
6524: 'request.course.sec' => $sec,
6525: }
6526: );
6527: my $tadv=0;
6528: if (&allowed('adv') eq 'F') { $tadv=1; }
6529: &appenv({'request.role.adv' => $tadv});
6530: }
6531: }
6532:
6533: # --------------------------------------------------------------- get interface
6534:
6535: sub get {
6536: my ($namespace,$storearr,$udomain,$uname)=@_;
6537: my $items='';
6538: foreach my $item (@$storearr) {
6539: $items.=&escape($item).'&';
6540: }
6541: $items=~s/\&$//;
6542: if (!$udomain) { $udomain=$env{'user.domain'}; }
6543: if (!$uname) { $uname=$env{'user.name'}; }
6544: my $uhome=&homeserver($uname,$udomain);
6545:
6546: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6547: my @pairs=split(/\&/,$rep);
6548: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6549: return @pairs;
6550: }
6551: my %returnhash=();
6552: my $i=0;
6553: foreach my $item (@$storearr) {
6554: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6555: $i++;
6556: }
6557: return %returnhash;
6558: }
6559:
6560: # --------------------------------------------------------------- del interface
6561:
6562: sub del {
6563: my ($namespace,$storearr,$udomain,$uname)=@_;
6564: my $items='';
6565: foreach my $item (@$storearr) {
6566: $items.=&escape($item).'&';
6567: }
6568:
6569: $items=~s/\&$//;
6570: if (!$udomain) { $udomain=$env{'user.domain'}; }
6571: if (!$uname) { $uname=$env{'user.name'}; }
6572: my $uhome=&homeserver($uname,$udomain);
6573: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6574: }
6575:
6576: # -------------------------------------------------------------- dump interface
6577:
6578: sub unserialize {
6579: my ($rep, $escapedkeys) = @_;
6580:
6581: return {} if $rep =~ /^error/;
6582:
6583: my %returnhash=();
6584: foreach my $item (split(/\&/,$rep)) {
6585: my ($key, $value) = split(/=/, $item, 2);
6586: $key = unescape($key) unless $escapedkeys;
6587: next if $key =~ /^error: 2 /;
6588: $returnhash{$key} = &thaw_unescape($value);
6589: }
6590: #return %returnhash;
6591: return \%returnhash;
6592: }
6593:
6594: # see Lond::dump_with_regexp
6595: # if $escapedkeys hash keys won't get unescaped.
6596: sub dump {
6597: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6598: if (!$udomain) { $udomain=$env{'user.domain'}; }
6599: if (!$uname) { $uname=$env{'user.name'}; }
6600: my $uhome=&homeserver($uname,$udomain);
6601:
6602: if ($regexp) {
6603: $regexp=&escape($regexp);
6604: } else {
6605: $regexp='.';
6606: }
6607: if (grep { $_ eq $uhome } current_machine_ids()) {
6608: # user is hosted on this machine
6609: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6610: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6611: return %{unserialize($reply, $escapedkeys)};
6612: }
6613: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6614: my @pairs=split(/\&/,$rep);
6615: my %returnhash=();
6616: if (!($rep =~ /^error/ )) {
6617: foreach my $item (@pairs) {
6618: my ($key,$value)=split(/=/,$item,2);
6619: $key = unescape($key) unless $escapedkeys;
6620: #$key = &unescape($key);
6621: next if ($key =~ /^error: 2 /);
6622: $returnhash{$key}=&thaw_unescape($value);
6623: }
6624: }
6625: return %returnhash;
6626: }
6627:
6628:
6629: # --------------------------------------------------------- dumpstore interface
6630:
6631: sub dumpstore {
6632: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6633: # same as dump but keys must be escaped. They may contain colon separated
6634: # lists of values that may themself contain colons (e.g. symbs).
6635: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6636: }
6637:
6638: # -------------------------------------------------------------- keys interface
6639:
6640: sub getkeys {
6641: my ($namespace,$udomain,$uname)=@_;
6642: if (!$udomain) { $udomain=$env{'user.domain'}; }
6643: if (!$uname) { $uname=$env{'user.name'}; }
6644: my $uhome=&homeserver($uname,$udomain);
6645: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6646: my @keyarray=();
6647: foreach my $key (split(/\&/,$rep)) {
6648: next if ($key =~ /^error: 2 /);
6649: push(@keyarray,&unescape($key));
6650: }
6651: return @keyarray;
6652: }
6653:
6654: # --------------------------------------------------------------- currentdump
6655: sub currentdump {
6656: my ($courseid,$sdom,$sname)=@_;
6657: $courseid = $env{'request.course.id'} if (! defined($courseid));
6658: $sdom = $env{'user.domain'} if (! defined($sdom));
6659: $sname = $env{'user.name'} if (! defined($sname));
6660: my $uhome = &homeserver($sname,$sdom);
6661: my $rep;
6662:
6663: if (grep { $_ eq $uhome } current_machine_ids()) {
6664: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6665: $courseid)));
6666: } else {
6667: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6668: }
6669:
6670: return if ($rep =~ /^(error:|no_such_host)/);
6671: #
6672: my %returnhash=();
6673: #
6674: if ($rep eq 'unknown_cmd') {
6675: # an old lond will not know currentdump
6676: # Do a dump and make it look like a currentdump
6677: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6678: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6679: my %hash = @tmp;
6680: @tmp=();
6681: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6682: } else {
6683: my @pairs=split(/\&/,$rep);
6684: foreach my $pair (@pairs) {
6685: my ($key,$value)=split(/=/,$pair,2);
6686: my ($symb,$param) = split(/:/,$key);
6687: $returnhash{&unescape($symb)}->{&unescape($param)} =
6688: &thaw_unescape($value);
6689: }
6690: }
6691: return %returnhash;
6692: }
6693:
6694: sub convert_dump_to_currentdump{
6695: my %hash = %{shift()};
6696: my %returnhash;
6697: # Code ripped from lond, essentially. The only difference
6698: # here is the unescaping done by lonnet::dump(). Conceivably
6699: # we might run in to problems with parameter names =~ /^v\./
6700: while (my ($key,$value) = each(%hash)) {
6701: my ($v,$symb,$param) = split(/:/,$key);
6702: $symb = &unescape($symb);
6703: $param = &unescape($param);
6704: next if ($v eq 'version' || $symb eq 'keys');
6705: next if (exists($returnhash{$symb}) &&
6706: exists($returnhash{$symb}->{$param}) &&
6707: $returnhash{$symb}->{'v.'.$param} > $v);
6708: $returnhash{$symb}->{$param}=$value;
6709: $returnhash{$symb}->{'v.'.$param}=$v;
6710: }
6711: #
6712: # Remove all of the keys in the hashes which keep track of
6713: # the version of the parameter.
6714: while (my ($symb,$param_hash) = each(%returnhash)) {
6715: # use a foreach because we are going to delete from the hash.
6716: foreach my $key (keys(%$param_hash)) {
6717: delete($param_hash->{$key}) if ($key =~ /^v\./);
6718: }
6719: }
6720: return \%returnhash;
6721: }
6722:
6723: # ------------------------------------------------------ critical inc interface
6724:
6725: sub cinc {
6726: return &inc(@_,'critical');
6727: }
6728:
6729: # --------------------------------------------------------------- inc interface
6730:
6731: sub inc {
6732: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6733: if (!$udomain) { $udomain=$env{'user.domain'}; }
6734: if (!$uname) { $uname=$env{'user.name'}; }
6735: my $uhome=&homeserver($uname,$udomain);
6736: my $items='';
6737: if (! ref($store)) {
6738: # got a single value, so use that instead
6739: $items = &escape($store).'=&';
6740: } elsif (ref($store) eq 'SCALAR') {
6741: $items = &escape($$store).'=&';
6742: } elsif (ref($store) eq 'ARRAY') {
6743: $items = join('=&',map {&escape($_);} @{$store});
6744: } elsif (ref($store) eq 'HASH') {
6745: while (my($key,$value) = each(%{$store})) {
6746: $items.= &escape($key).'='.&escape($value).'&';
6747: }
6748: }
6749: $items=~s/\&$//;
6750: if ($critical) {
6751: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6752: } else {
6753: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6754: }
6755: }
6756:
6757: # --------------------------------------------------------------- put interface
6758:
6759: sub put {
6760: my ($namespace,$storehash,$udomain,$uname)=@_;
6761: if (!$udomain) { $udomain=$env{'user.domain'}; }
6762: if (!$uname) { $uname=$env{'user.name'}; }
6763: my $uhome=&homeserver($uname,$udomain);
6764: my $items='';
6765: foreach my $item (keys(%$storehash)) {
6766: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6767: }
6768: $items=~s/\&$//;
6769: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6770: }
6771:
6772: # ------------------------------------------------------------ newput interface
6773:
6774: sub newput {
6775: my ($namespace,$storehash,$udomain,$uname)=@_;
6776: if (!$udomain) { $udomain=$env{'user.domain'}; }
6777: if (!$uname) { $uname=$env{'user.name'}; }
6778: my $uhome=&homeserver($uname,$udomain);
6779: my $items='';
6780: foreach my $key (keys(%$storehash)) {
6781: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6782: }
6783: $items=~s/\&$//;
6784: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6785: }
6786:
6787: # --------------------------------------------------------- putstore interface
6788:
6789: sub putstore {
6790: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6791: if (!$udomain) { $udomain=$env{'user.domain'}; }
6792: if (!$uname) { $uname=$env{'user.name'}; }
6793: my $uhome=&homeserver($uname,$udomain);
6794: my $items='';
6795: foreach my $key (keys(%$storehash)) {
6796: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6797: }
6798: $items=~s/\&$//;
6799: my $esc_symb=&escape($symb);
6800: my $esc_v=&escape($version);
6801: my $reply =
6802: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6803: $uhome);
6804: if (($tolog) && ($reply eq 'ok')) {
6805: my $namevalue='';
6806: foreach my $key (keys(%{$storehash})) {
6807: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6808: }
6809: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6810: '&host='.&escape($perlvar{'lonHostID'}).
6811: '&version='.$esc_v.
6812: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6813: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6814: }
6815: if ($reply eq 'unknown_cmd') {
6816: # gfall back to way things use to be done
6817: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6818: $uname);
6819: }
6820: return $reply;
6821: }
6822:
6823: sub old_putstore {
6824: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6825: if (!$udomain) { $udomain=$env{'user.domain'}; }
6826: if (!$uname) { $uname=$env{'user.name'}; }
6827: my $uhome=&homeserver($uname,$udomain);
6828: my %newstorehash;
6829: foreach my $item (keys(%$storehash)) {
6830: my $key = $version.':'.&escape($symb).':'.$item;
6831: $newstorehash{$key} = $storehash->{$item};
6832: }
6833: my $items='';
6834: my %allitems = ();
6835: foreach my $item (keys(%newstorehash)) {
6836: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6837: my $key = $1.':keys:'.$2;
6838: $allitems{$key} .= $3.':';
6839: }
6840: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6841: }
6842: foreach my $item (keys(%allitems)) {
6843: $allitems{$item} =~ s/\:$//;
6844: $items.= $item.'='.$allitems{$item}.'&';
6845: }
6846: $items=~s/\&$//;
6847: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6848: }
6849:
6850: # ------------------------------------------------------ critical put interface
6851:
6852: sub cput {
6853: my ($namespace,$storehash,$udomain,$uname)=@_;
6854: if (!$udomain) { $udomain=$env{'user.domain'}; }
6855: if (!$uname) { $uname=$env{'user.name'}; }
6856: my $uhome=&homeserver($uname,$udomain);
6857: my $items='';
6858: foreach my $item (keys(%$storehash)) {
6859: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6860: }
6861: $items=~s/\&$//;
6862: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6863: }
6864:
6865: # -------------------------------------------------------------- eget interface
6866:
6867: sub eget {
6868: my ($namespace,$storearr,$udomain,$uname)=@_;
6869: my $items='';
6870: foreach my $item (@$storearr) {
6871: $items.=&escape($item).'&';
6872: }
6873: $items=~s/\&$//;
6874: if (!$udomain) { $udomain=$env{'user.domain'}; }
6875: if (!$uname) { $uname=$env{'user.name'}; }
6876: my $uhome=&homeserver($uname,$udomain);
6877: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6878: my @pairs=split(/\&/,$rep);
6879: my %returnhash=();
6880: my $i=0;
6881: foreach my $item (@$storearr) {
6882: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6883: $i++;
6884: }
6885: return %returnhash;
6886: }
6887:
6888: # ------------------------------------------------------------ tmpput interface
6889: sub tmpput {
6890: my ($storehash,$server,$context)=@_;
6891: my $items='';
6892: foreach my $item (keys(%$storehash)) {
6893: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6894: }
6895: $items=~s/\&$//;
6896: if (defined($context)) {
6897: $items .= ':'.&escape($context);
6898: }
6899: return &reply("tmpput:$items",$server);
6900: }
6901:
6902: # ------------------------------------------------------------ tmpget interface
6903: sub tmpget {
6904: my ($token,$server)=@_;
6905: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6906: my $rep=&reply("tmpget:$token",$server);
6907: my %returnhash;
6908: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6909: return %returnhash;
6910: }
6911: foreach my $item (split(/\&/,$rep)) {
6912: my ($key,$value)=split(/=/,$item);
6913: $returnhash{&unescape($key)}=&thaw_unescape($value);
6914: }
6915: return %returnhash;
6916: }
6917:
6918: # ------------------------------------------------------------ tmpdel interface
6919: sub tmpdel {
6920: my ($token,$server)=@_;
6921: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6922: return &reply("tmpdel:$token",$server);
6923: }
6924:
6925: # ------------------------------------------------------------ get_timebased_id
6926:
6927: sub get_timebased_id {
6928: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6929: $maxtries) = @_;
6930: my ($newid,$error,$dellock);
6931: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6932: return ('','ok','invalid call to get suffix');
6933: }
6934:
6935: # set defaults for any optional args for which values were not supplied
6936: if ($who eq '') {
6937: $who = $env{'user.name'}.':'.$env{'user.domain'};
6938: }
6939: if (!$locktries) {
6940: $locktries = 3;
6941: }
6942: if (!$maxtries) {
6943: $maxtries = 10;
6944: }
6945:
6946: if (($cdom eq '') || ($cnum eq '')) {
6947: if ($env{'request.course.id'}) {
6948: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6949: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6950: }
6951: if (($cdom eq '') || ($cnum eq '')) {
6952: return ('','ok','call to get suffix not in course context');
6953: }
6954: }
6955:
6956: # construct locking item
6957: my $lockhash = {
6958: $prefix."\0".'locked_'.$keyid => $who,
6959: };
6960: my $tries = 0;
6961:
6962: # attempt to get lock on nohist_$namespace file
6963: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6964: while (($gotlock ne 'ok') && $tries <$locktries) {
6965: $tries ++;
6966: sleep 1;
6967: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6968: }
6969:
6970: # attempt to get unique identifier, based on current timestamp
6971: if ($gotlock eq 'ok') {
6972: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6973: my $id = time;
6974: $newid = $id;
6975: if ($idtype eq 'addcode') {
6976: $newid .= &sixnum_code();
6977: }
6978: my $idtries = 0;
6979: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6980: if ($idtype eq 'concat') {
6981: $newid = $id.$idtries;
6982: } elsif ($idtype eq 'addcode') {
6983: $newid = $newid.&sixnum_code();
6984: } else {
6985: $newid ++;
6986: }
6987: $idtries ++;
6988: }
6989: if (!exists($inuse{$prefix."\0".$newid})) {
6990: my %new_item = (
6991: $prefix."\0".$newid => $who,
6992: );
6993: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6994: $cdom,$cnum);
6995: if ($putresult ne 'ok') {
6996: undef($newid);
6997: $error = 'error saving new item: '.$putresult;
6998: }
6999: } else {
7000: undef($newid);
7001: $error = ('error: no unique suffix available for the new item ');
7002: }
7003: # remove lock
7004: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7005: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7006: } else {
7007: $error = "error: could not obtain lockfile\n";
7008: $dellock = 'ok';
7009: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7010: $dellock = 'nolock';
7011: }
7012: }
7013: return ($newid,$dellock,$error);
7014: }
7015:
7016: sub sixnum_code {
7017: my $code;
7018: for (0..6) {
7019: $code .= int( rand(9) );
7020: }
7021: return $code;
7022: }
7023:
7024: # -------------------------------------------------- portfolio access checking
7025:
7026: sub portfolio_access {
7027: my ($requrl,$clientip) = @_;
7028: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7029: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7030: if ($result) {
7031: my %setters;
7032: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7033: my ($startblock,$endblock) =
7034: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7035: if ($startblock && $endblock) {
7036: return 'B';
7037: }
7038: } else {
7039: my ($startblock,$endblock) =
7040: &Apache::loncommon::blockcheck(\%setters,'port');
7041: if ($startblock && $endblock) {
7042: return 'B';
7043: }
7044: }
7045: }
7046: if ($result eq 'ok') {
7047: return 'F';
7048: } elsif ($result =~ /^[^:]+:guest_/) {
7049: return 'A';
7050: }
7051: return '';
7052: }
7053:
7054: sub get_portfolio_access {
7055: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7056:
7057: if (!ref($access_hash)) {
7058: my $current_perms = &get_portfile_permissions($udom,$unum);
7059: my %access_controls = &get_access_controls($current_perms,$group,
7060: $file_name);
7061: $access_hash = $access_controls{$file_name};
7062: }
7063:
7064: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7065: my $now = time;
7066: if (ref($access_hash) eq 'HASH') {
7067: foreach my $key (keys(%{$access_hash})) {
7068: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7069: if ($start > $now) {
7070: next;
7071: }
7072: if ($end && $end<$now) {
7073: next;
7074: }
7075: if ($scope eq 'public') {
7076: $public = $key;
7077: last;
7078: } elsif ($scope eq 'guest') {
7079: $guest = $key;
7080: } elsif ($scope eq 'domains') {
7081: push(@domains,$key);
7082: } elsif ($scope eq 'users') {
7083: push(@users,$key);
7084: } elsif ($scope eq 'course') {
7085: push(@courses,$key);
7086: } elsif ($scope eq 'group') {
7087: push(@groups,$key);
7088: } elsif ($scope eq 'ip') {
7089: push(@ips,$key);
7090: }
7091: }
7092: if ($public) {
7093: return 'ok';
7094: } elsif (@ips > 0) {
7095: my $allowed;
7096: foreach my $ipkey (@ips) {
7097: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7098: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7099: $allowed = 1;
7100: last;
7101: }
7102: }
7103: }
7104: if ($allowed) {
7105: return 'ok';
7106: }
7107: }
7108: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7109: if ($guest) {
7110: return $guest;
7111: }
7112: } else {
7113: if (@domains > 0) {
7114: foreach my $domkey (@domains) {
7115: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7116: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7117: return 'ok';
7118: }
7119: }
7120: }
7121: }
7122: if (@users > 0) {
7123: foreach my $userkey (@users) {
7124: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7125: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7126: if (ref($item) eq 'HASH') {
7127: if (($item->{'uname'} eq $env{'user.name'}) &&
7128: ($item->{'udom'} eq $env{'user.domain'})) {
7129: return 'ok';
7130: }
7131: }
7132: }
7133: }
7134: }
7135: }
7136: my %roleshash;
7137: my @courses_and_groups = @courses;
7138: push(@courses_and_groups,@groups);
7139: if (@courses_and_groups > 0) {
7140: my (%allgroups,%allroles);
7141: my ($start,$end,$role,$sec,$group);
7142: foreach my $envkey (%env) {
7143: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7144: my $cid = $2.'_'.$3;
7145: if ($1 eq 'gr') {
7146: $group = $4;
7147: $allgroups{$cid}{$group} = $env{$envkey};
7148: } else {
7149: if ($4 eq '') {
7150: $sec = 'none';
7151: } else {
7152: $sec = $4;
7153: }
7154: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7155: }
7156: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7157: my $cid = $2.'_'.$3;
7158: if ($4 eq '') {
7159: $sec = 'none';
7160: } else {
7161: $sec = $4;
7162: }
7163: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7164: }
7165: }
7166: if (keys(%allroles) == 0) {
7167: return;
7168: }
7169: foreach my $key (@courses_and_groups) {
7170: my %content = %{$$access_hash{$key}};
7171: my $cnum = $content{'number'};
7172: my $cdom = $content{'domain'};
7173: my $cid = $cdom.'_'.$cnum;
7174: if (!exists($allroles{$cid})) {
7175: next;
7176: }
7177: foreach my $role_id (keys(%{$content{'roles'}})) {
7178: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7179: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7180: my @status = @{$content{'roles'}{$role_id}{'access'}};
7181: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7182: foreach my $role (keys(%{$allroles{$cid}})) {
7183: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7184: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7185: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7186: if (grep/^all$/,@sections) {
7187: return 'ok';
7188: } else {
7189: if (grep/^$sec$/,@sections) {
7190: return 'ok';
7191: }
7192: }
7193: }
7194: }
7195: if (keys(%{$allgroups{$cid}}) == 0) {
7196: if (grep/^none$/,@groups) {
7197: return 'ok';
7198: }
7199: } else {
7200: if (grep/^all$/,@groups) {
7201: return 'ok';
7202: }
7203: foreach my $group (keys(%{$allgroups{$cid}})) {
7204: if (grep/^$group$/,@groups) {
7205: return 'ok';
7206: }
7207: }
7208: }
7209: }
7210: }
7211: }
7212: }
7213: }
7214: if ($guest) {
7215: return $guest;
7216: }
7217: }
7218: }
7219: return;
7220: }
7221:
7222: sub course_group_datechecker {
7223: my ($dates,$now,$status) = @_;
7224: my ($start,$end) = split(/\./,$dates);
7225: if (!$start && !$end) {
7226: return 'ok';
7227: }
7228: if (grep/^active$/,@{$status}) {
7229: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7230: return 'ok';
7231: }
7232: }
7233: if (grep/^previous$/,@{$status}) {
7234: if ($end > $now ) {
7235: return 'ok';
7236: }
7237: }
7238: if (grep/^future$/,@{$status}) {
7239: if ($start > $now) {
7240: return 'ok';
7241: }
7242: }
7243: return;
7244: }
7245:
7246: sub parse_portfolio_url {
7247: my ($url) = @_;
7248:
7249: my ($type,$udom,$unum,$group,$file_name);
7250:
7251: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7252: $type = 1;
7253: $udom = $1;
7254: $unum = $2;
7255: $file_name = $3;
7256: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7257: $type = 2;
7258: $udom = $1;
7259: $unum = $2;
7260: $group = $3;
7261: $file_name = $3.'/'.$4;
7262: }
7263: if (wantarray) {
7264: return ($type,$udom,$unum,$file_name,$group);
7265: }
7266: return $type;
7267: }
7268:
7269: sub is_portfolio_url {
7270: my ($url) = @_;
7271: return scalar(&parse_portfolio_url($url));
7272: }
7273:
7274: sub is_portfolio_file {
7275: my ($file) = @_;
7276: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7277: return 1;
7278: }
7279: return;
7280: }
7281:
7282: sub usertools_access {
7283: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7284: my ($access,%tools);
7285: if ($context eq '') {
7286: $context = 'tools';
7287: }
7288: if ($context eq 'requestcourses') {
7289: %tools = (
7290: official => 1,
7291: unofficial => 1,
7292: community => 1,
7293: textbook => 1,
7294: placement => 1,
7295: lti => 1,
7296: );
7297: } elsif ($context eq 'requestauthor') {
7298: %tools = (
7299: requestauthor => 1,
7300: );
7301: } else {
7302: %tools = (
7303: aboutme => 1,
7304: blog => 1,
7305: webdav => 1,
7306: portfolio => 1,
7307: );
7308: }
7309: return if (!defined($tools{$tool}));
7310:
7311: if (($udom eq '') || ($uname eq '')) {
7312: $udom = $env{'user.domain'};
7313: $uname = $env{'user.name'};
7314: }
7315:
7316: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7317: if ($action ne 'reload') {
7318: if ($context eq 'requestcourses') {
7319: return $env{'environment.canrequest.'.$tool};
7320: } elsif ($context eq 'requestauthor') {
7321: return $env{'environment.canrequest.author'};
7322: } else {
7323: return $env{'environment.availabletools.'.$tool};
7324: }
7325: }
7326: }
7327:
7328: my ($toolstatus,$inststatus,$envkey);
7329: if ($context eq 'requestauthor') {
7330: $envkey = $context;
7331: } else {
7332: $envkey = $context.'.'.$tool;
7333: }
7334:
7335: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7336: ($action ne 'reload')) {
7337: $toolstatus = $env{'environment.'.$envkey};
7338: $inststatus = $env{'environment.inststatus'};
7339: } else {
7340: if (ref($userenvref) eq 'HASH') {
7341: $toolstatus = $userenvref->{$envkey};
7342: $inststatus = $userenvref->{'inststatus'};
7343: } else {
7344: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7345: $toolstatus = $userenv{$envkey};
7346: $inststatus = $userenv{'inststatus'};
7347: }
7348: }
7349:
7350: if ($toolstatus ne '') {
7351: if ($toolstatus) {
7352: $access = 1;
7353: } else {
7354: $access = 0;
7355: }
7356: return $access;
7357: }
7358:
7359: my ($is_adv,%domdef);
7360: if (ref($is_advref) eq 'HASH') {
7361: $is_adv = $is_advref->{'is_adv'};
7362: } else {
7363: $is_adv = &is_advanced_user($udom,$uname);
7364: }
7365: if (ref($domdefref) eq 'HASH') {
7366: %domdef = %{$domdefref};
7367: } else {
7368: %domdef = &get_domain_defaults($udom);
7369: }
7370: if (ref($domdef{$tool}) eq 'HASH') {
7371: if ($is_adv) {
7372: if ($domdef{$tool}{'_LC_adv'} ne '') {
7373: if ($domdef{$tool}{'_LC_adv'}) {
7374: $access = 1;
7375: } else {
7376: $access = 0;
7377: }
7378: return $access;
7379: }
7380: }
7381: if ($inststatus ne '') {
7382: my ($hasaccess,$hasnoaccess);
7383: foreach my $affiliation (split(/:/,$inststatus)) {
7384: if ($domdef{$tool}{$affiliation} ne '') {
7385: if ($domdef{$tool}{$affiliation}) {
7386: $hasaccess = 1;
7387: } else {
7388: $hasnoaccess = 1;
7389: }
7390: }
7391: }
7392: if ($hasaccess || $hasnoaccess) {
7393: if ($hasaccess) {
7394: $access = 1;
7395: } elsif ($hasnoaccess) {
7396: $access = 0;
7397: }
7398: return $access;
7399: }
7400: } else {
7401: if ($domdef{$tool}{'default'} ne '') {
7402: if ($domdef{$tool}{'default'}) {
7403: $access = 1;
7404: } elsif ($domdef{$tool}{'default'} == 0) {
7405: $access = 0;
7406: }
7407: return $access;
7408: }
7409: }
7410: } else {
7411: if (($context eq 'tools') && ($tool ne 'webdav')) {
7412: $access = 1;
7413: } else {
7414: $access = 0;
7415: }
7416: return $access;
7417: }
7418: }
7419:
7420: sub is_course_owner {
7421: my ($cdom,$cnum,$udom,$uname) = @_;
7422: if (($udom eq '') || ($uname eq '')) {
7423: $udom = $env{'user.domain'};
7424: $uname = $env{'user.name'};
7425: }
7426: unless (($udom eq '') || ($uname eq '')) {
7427: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7428: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7429: return 1;
7430: } else {
7431: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7432: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7433: return 1;
7434: }
7435: }
7436: }
7437: }
7438: return;
7439: }
7440:
7441: sub is_advanced_user {
7442: my ($udom,$uname) = @_;
7443: if ($udom ne '' && $uname ne '') {
7444: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7445: if (wantarray) {
7446: return ($env{'user.adv'},$env{'user.author'});
7447: } else {
7448: return $env{'user.adv'};
7449: }
7450: }
7451: }
7452: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7453: my %allroles;
7454: my ($is_adv,$is_author);
7455: foreach my $role (keys(%roleshash)) {
7456: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7457: my $area = '/'.$tdomain.'/'.$trest;
7458: if ($sec ne '') {
7459: $area .= '/'.$sec;
7460: }
7461: if (($area ne '') && ($trole ne '')) {
7462: my $spec=$trole.'.'.$area;
7463: if ($trole =~ /^cr\//) {
7464: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7465: } elsif ($trole ne 'gr') {
7466: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7467: }
7468: if ($trole eq 'au') {
7469: $is_author = 1;
7470: }
7471: }
7472: }
7473: foreach my $role (keys(%allroles)) {
7474: last if ($is_adv);
7475: foreach my $item (split(/:/,$allroles{$role})) {
7476: if ($item ne '') {
7477: my ($privilege,$restrictions)=split(/&/,$item);
7478: if ($privilege eq 'adv') {
7479: $is_adv = 1;
7480: last;
7481: }
7482: }
7483: }
7484: }
7485: if (wantarray) {
7486: return ($is_adv,$is_author);
7487: }
7488: return $is_adv;
7489: }
7490:
7491: sub check_can_request {
7492: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7493: my $canreq = 0;
7494: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7495: $uname = $env{'user.name'};
7496: $udom = $env{'user.domain'};
7497: }
7498: my ($types,$typename) = &Apache::loncommon::course_types();
7499: my @options = ('approval','validate','autolimit');
7500: my $optregex = join('|',@options);
7501: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7502: foreach my $type (@{$types}) {
7503: if (&usertools_access($uname,$udom,$type,undef,
7504: 'requestcourses')) {
7505: $canreq ++;
7506: if (ref($request_domains) eq 'HASH') {
7507: push(@{$request_domains->{$type}},$udom);
7508: }
7509: if ($dom eq $udom) {
7510: $can_request->{$type} = 1;
7511: }
7512: }
7513: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7514: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7515: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7516: if (@curr > 0) {
7517: foreach my $item (@curr) {
7518: if (ref($request_domains) eq 'HASH') {
7519: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7520: if ($otherdom ne '') {
7521: if (ref($request_domains->{$type}) eq 'ARRAY') {
7522: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7523: push(@{$request_domains->{$type}},$otherdom);
7524: }
7525: } else {
7526: push(@{$request_domains->{$type}},$otherdom);
7527: }
7528: }
7529: }
7530: }
7531: unless ($dom eq $env{'user.domain'}) {
7532: $canreq ++;
7533: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7534: $can_request->{$type} = 1;
7535: }
7536: }
7537: }
7538: }
7539: }
7540: }
7541: return $canreq;
7542: }
7543:
7544: # ---------------------------------------------- Custom access rule evaluation
7545:
7546: sub customaccess {
7547: my ($priv,$uri)=@_;
7548: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7549: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7550: $udom = &LONCAPA::clean_domain($udom);
7551: $ucrs = &LONCAPA::clean_username($ucrs);
7552: my $access=0;
7553: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7554: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7555: if ($type eq 'user') {
7556: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7557: my ($tdom,$tuname)=split(m{/},$scope);
7558: if ($tdom) {
7559: if ($tdom ne $env{'user.domain'}) { next; }
7560: }
7561: if ($tuname) {
7562: if ($tuname ne $env{'user.name'}) { next; }
7563: }
7564: $access=($effect eq 'allow');
7565: last;
7566: }
7567: } else {
7568: if ($role) {
7569: if ($role ne $urole) { next; }
7570: }
7571: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7572: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7573: if ($tdom) {
7574: if ($tdom ne $udom) { next; }
7575: }
7576: if ($tcrs) {
7577: if ($tcrs ne $ucrs) { next; }
7578: }
7579: if ($tsec) {
7580: if ($tsec ne $usec) { next; }
7581: }
7582: $access=($effect eq 'allow');
7583: last;
7584: }
7585: if ($realm eq '' && $role eq '') {
7586: $access=($effect eq 'allow');
7587: }
7588: }
7589: }
7590: return $access;
7591: }
7592:
7593: # ------------------------------------------------- Check for a user privilege
7594:
7595: sub allowed {
7596: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7597: my $ver_orguri=$uri;
7598: $uri=&deversion($uri);
7599: my $orguri=$uri;
7600: $uri=&declutter($uri);
7601:
7602: if ($priv eq 'evb') {
7603: # Evade communication block restrictions for specified role in a course
7604: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7605: return $1;
7606: } else {
7607: return;
7608: }
7609: }
7610:
7611: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7612: # Free bre access to adm and meta resources
7613: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7614: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7615: && ($priv eq 'bre')) {
7616: return 'F';
7617: }
7618:
7619: # Free bre access to user's own portfolio contents
7620: my ($space,$domain,$name,@dir)=split('/',$uri);
7621: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7622: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7623: my %setters;
7624: my ($startblock,$endblock) =
7625: &Apache::loncommon::blockcheck(\%setters,'port');
7626: if ($startblock && $endblock) {
7627: return 'B';
7628: } else {
7629: return 'F';
7630: }
7631: }
7632:
7633: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7634: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7635: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7636: if (exists($env{'request.course.id'})) {
7637: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7638: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7639: if (($domain eq $cdom) && ($name eq $cnum)) {
7640: my $courseprivid=$env{'request.course.id'};
7641: $courseprivid=~s/\_/\//;
7642: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7643: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7644: return $1;
7645: } else {
7646: if ($env{'request.course.sec'}) {
7647: $courseprivid.='/'.$env{'request.course.sec'};
7648: }
7649: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7650: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7651: return $2;
7652: }
7653: }
7654: }
7655: }
7656: }
7657:
7658: # Free bre to public access
7659:
7660: if ($priv eq 'bre') {
7661: my $copyright;
7662: unless ($uri =~ /ext\.tool/) {
7663: $copyright=&metadata($uri,'copyright');
7664: }
7665: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7666: return 'F';
7667: }
7668: if ($copyright eq 'priv') {
7669: $uri=~/([^\/]+)\/([^\/]+)\//;
7670: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7671: return '';
7672: }
7673: }
7674: if ($copyright eq 'domain') {
7675: $uri=~/([^\/]+)\/([^\/]+)\//;
7676: unless (($env{'user.domain'} eq $1) ||
7677: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7678: return '';
7679: }
7680: }
7681: if ($env{'request.role'}=~ /li\.\//) {
7682: # Library role, so allow browsing of resources in this domain.
7683: return 'F';
7684: }
7685: if ($copyright eq 'custom') {
7686: unless (&customaccess($priv,$uri)) { return ''; }
7687: }
7688: }
7689: # Domain coordinator is trying to create a course
7690: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7691: # uri is the requested domain in this case.
7692: # comparison to 'request.role.domain' shows if the user has selected
7693: # a role of dc for the domain in question.
7694: return 'F' if ($uri eq $env{'request.role.domain'});
7695: }
7696:
7697: my $thisallowed='';
7698: my $statecond=0;
7699: my $courseprivid='';
7700:
7701: my $ownaccess;
7702: # Community Coordinator or Assistant Co-author browsing resource space.
7703: if (($priv eq 'bro') && ($env{'user.author'})) {
7704: if ($uri eq '') {
7705: $ownaccess = 1;
7706: } else {
7707: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7708: my $udom = $env{'user.domain'};
7709: my $uname = $env{'user.name'};
7710: if ($uri =~ m{^\Q$udom\E/?$}) {
7711: $ownaccess = 1;
7712: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7713: unless ($uri =~ m{\.\./}) {
7714: $ownaccess = 1;
7715: }
7716: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7717: my $now = time;
7718: if ($uri =~ m{^([^/]+)/?$}) {
7719: my $adom = $1;
7720: foreach my $key (keys(%env)) {
7721: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7722: my ($start,$end) = split('.',$env{$key});
7723: if (($now >= $start) && (!$end || $end < $now)) {
7724: $ownaccess = 1;
7725: last;
7726: }
7727: }
7728: }
7729: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7730: my $adom = $1;
7731: my $aname = $2;
7732: foreach my $role ('ca','aa') {
7733: if ($env{"user.role.$role./$adom/$aname"}) {
7734: my ($start,$end) =
7735: split('.',$env{"user.role.$role./$adom/$aname"});
7736: if (($now >= $start) && (!$end || $end < $now)) {
7737: $ownaccess = 1;
7738: last;
7739: }
7740: }
7741: }
7742: }
7743: }
7744: }
7745: }
7746: }
7747:
7748: # Course
7749:
7750: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7751: unless (($priv eq 'bro') && (!$ownaccess)) {
7752: $thisallowed.=$1;
7753: }
7754: }
7755:
7756: # Domain
7757:
7758: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7759: =~/\Q$priv\E\&([^\:]*)/) {
7760: unless (($priv eq 'bro') && (!$ownaccess)) {
7761: $thisallowed.=$1;
7762: }
7763: }
7764:
7765: # User who is not author or co-author might still be able to edit
7766: # resource of an author in the domain (e.g., if Domain Coordinator).
7767: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7768: (&allowed('mdc',$env{'request.course.id'}))) {
7769: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7770: $thisallowed.=$1;
7771: }
7772: }
7773:
7774: # Course: uri itself is a course
7775: my $courseuri=$uri;
7776: $courseuri=~s/\_(\d)/\/$1/;
7777: $courseuri=~s/^([^\/])/\/$1/;
7778:
7779: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7780: =~/\Q$priv\E\&([^\:]*)/) {
7781: unless (($priv eq 'bro') && (!$ownaccess)) {
7782: $thisallowed.=$1;
7783: }
7784: }
7785:
7786: # URI is an uploaded document for this course, default permissions don't matter
7787: # not allowing 'edit' access (editupload) to uploaded course docs
7788: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7789: $thisallowed='';
7790: my ($match)=&is_on_map($uri);
7791: if ($match) {
7792: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7793: =~/\Q$priv\E\&([^\:]*)/) {
7794: my $value = $1;
7795: if ($noblockcheck) {
7796: $thisallowed.=$value;
7797: } else {
7798: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7799: if (@blockers > 0) {
7800: $thisallowed = 'B';
7801: } else {
7802: $thisallowed.=$value;
7803: }
7804: }
7805: }
7806: } else {
7807: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7808: if ($refuri) {
7809: if ($refuri =~ m|^/adm/|) {
7810: $thisallowed='F';
7811: } else {
7812: $refuri=&declutter($refuri);
7813: my ($match) = &is_on_map($refuri);
7814: if ($match) {
7815: if ($noblockcheck) {
7816: $thisallowed='F';
7817: } else {
7818: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7819: if (@blockers > 0) {
7820: $thisallowed = 'B';
7821: } else {
7822: $thisallowed='F';
7823: }
7824: }
7825: }
7826: }
7827: }
7828: }
7829: }
7830:
7831: if ($priv eq 'bre'
7832: && $thisallowed ne 'F'
7833: && $thisallowed ne '2'
7834: && &is_portfolio_url($uri)) {
7835: $thisallowed = &portfolio_access($uri,$clientip);
7836: }
7837:
7838: # Full access at system, domain or course-wide level? Exit.
7839: if ($thisallowed=~/F/) {
7840: return 'F';
7841: }
7842:
7843: # If this is generating or modifying users, exit with special codes
7844:
7845: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7846: if (($priv eq 'cca') || ($priv eq 'caa')) {
7847: my ($audom,$auname)=split('/',$uri);
7848: # no author name given, so this just checks on the general right to make a co-author in this domain
7849: unless ($auname) { return $thisallowed; }
7850: # an author name is given, so we are about to actually make a co-author for a certain account
7851: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7852: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7853: ($audom ne $env{'request.role.domain'}))) { return ''; }
7854: }
7855: return $thisallowed;
7856: }
7857: #
7858: # Gathered so far: system, domain and course wide privileges
7859: #
7860: # Course: See if uri or referer is an individual resource that is part of
7861: # the course
7862:
7863: if ($env{'request.course.id'}) {
7864:
7865: $courseprivid=$env{'request.course.id'};
7866: if ($env{'request.course.sec'}) {
7867: $courseprivid.='/'.$env{'request.course.sec'};
7868: }
7869: $courseprivid=~s/\_/\//;
7870: my $checkreferer=1;
7871: my ($match,$cond)=&is_on_map($uri);
7872: if ($match) {
7873: $statecond=$cond;
7874: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7875: =~/\Q$priv\E\&([^\:]*)/) {
7876: my $value = $1;
7877: if ($priv eq 'bre') {
7878: if ($noblockcheck) {
7879: $thisallowed.=$value;
7880: } else {
7881: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7882: if (@blockers > 0) {
7883: $thisallowed = 'B';
7884: } else {
7885: $thisallowed.=$value;
7886: }
7887: }
7888: } else {
7889: $thisallowed.=$value;
7890: }
7891: $checkreferer=0;
7892: }
7893: }
7894:
7895: if ($checkreferer) {
7896: my $refuri=$env{'httpref.'.$orguri};
7897: unless ($refuri) {
7898: foreach my $key (keys(%env)) {
7899: if ($key=~/^httpref\..*\*/) {
7900: my $pattern=$key;
7901: $pattern=~s/^httpref\.\/res\///;
7902: $pattern=~s/\*/\[\^\/\]\+/g;
7903: $pattern=~s/\//\\\//g;
7904: if ($orguri=~/$pattern/) {
7905: $refuri=$env{$key};
7906: }
7907: }
7908: }
7909: }
7910:
7911: if ($refuri) {
7912: $refuri=&declutter($refuri);
7913: my ($match,$cond)=&is_on_map($refuri);
7914: if ($match) {
7915: my $refstatecond=$cond;
7916: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7917: =~/\Q$priv\E\&([^\:]*)/) {
7918: my $value = $1;
7919: if ($priv eq 'bre') {
7920: if ($noblockcheck) {
7921: $thisallowed.=$value;
7922: } else {
7923: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7924: if (@blockers > 0) {
7925: $thisallowed = 'B';
7926: } else {
7927: $thisallowed.=$value;
7928: }
7929: }
7930: } else {
7931: $thisallowed.=$value;
7932: }
7933: $uri=$refuri;
7934: $statecond=$refstatecond;
7935: }
7936: }
7937: }
7938: }
7939: }
7940:
7941: #
7942: # Gathered now: all privileges that could apply, and condition number
7943: #
7944: #
7945: # Full or no access?
7946: #
7947:
7948: if ($thisallowed=~/F/) {
7949: return 'F';
7950: }
7951:
7952: unless ($thisallowed) {
7953: return '';
7954: }
7955:
7956: # Restrictions exist, deal with them
7957: #
7958: # C:according to course preferences
7959: # R:according to resource settings
7960: # L:unless locked
7961: # X:according to user session state
7962: #
7963:
7964: # Possibly locked functionality, check all courses
7965: # Locks might take effect only after 10 minutes cache expiration for other
7966: # courses, and 2 minutes for current course
7967:
7968: my $envkey;
7969: if ($thisallowed=~/L/) {
7970: foreach $envkey (keys(%env)) {
7971: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7972: my $courseid=$2;
7973: my $roleid=$1.'.'.$2;
7974: $courseid=~s/^\///;
7975: my $expiretime=600;
7976: if ($env{'request.role'} eq $roleid) {
7977: $expiretime=120;
7978: }
7979: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7980: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7981: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7982: &coursedescription($courseid,{'freshen_cache' => 1});
7983: }
7984: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7985: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7986: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7987: &log($env{'user.domain'},$env{'user.name'},
7988: $env{'user.home'},
7989: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7990: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7991: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7992: return '';
7993: }
7994: }
7995: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7996: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7997: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7998: &log($env{'user.domain'},$env{'user.name'},
7999: $env{'user.home'},
8000: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8001: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8002: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8003: return '';
8004: }
8005: }
8006: }
8007: }
8008: }
8009:
8010: #
8011: # Rest of the restrictions depend on selected course
8012: #
8013:
8014: unless ($env{'request.course.id'}) {
8015: if ($thisallowed eq 'A') {
8016: return 'A';
8017: } elsif ($thisallowed eq 'B') {
8018: return 'B';
8019: } else {
8020: return '1';
8021: }
8022: }
8023:
8024: #
8025: # Now user is definitely in a course
8026: #
8027:
8028:
8029: # Course preferences
8030:
8031: if ($thisallowed=~/C/) {
8032: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8033: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8034: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8035: =~/\Q$rolecode\E/) {
8036: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8037: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8038: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8039: $env{'request.course.id'});
8040: }
8041: return '';
8042: }
8043:
8044: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8045: =~/\Q$unamedom\E/) {
8046: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8047: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8048: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8049: $env{'request.course.id'});
8050: }
8051: return '';
8052: }
8053: }
8054:
8055: # Resource preferences
8056:
8057: if ($thisallowed=~/R/) {
8058: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8059: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8060: if (($priv ne 'pch') && ($priv ne 'plc')) {
8061: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8062: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8063: }
8064: return '';
8065: }
8066: }
8067:
8068: # Restricted by state or randomout?
8069:
8070: if ($thisallowed=~/X/) {
8071: if ($env{'acc.randomout'}) {
8072: if (!$symb) { $symb=&symbread($uri,1); }
8073: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8074: return '';
8075: }
8076: }
8077: if (&condval($statecond)) {
8078: return '2';
8079: } else {
8080: return '';
8081: }
8082: }
8083:
8084: if ($thisallowed eq 'A') {
8085: return 'A';
8086: } elsif ($thisallowed eq 'B') {
8087: return 'B';
8088: }
8089: return 'F';
8090: }
8091:
8092: # ------------------------------------------- Check construction space access
8093:
8094: sub constructaccess {
8095: my ($url,$setpriv)=@_;
8096:
8097: # We do not allow editing of previous versions of files
8098: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8099:
8100: # Get username and domain from URL
8101: my ($ownername,$ownerdomain,$ownerhome);
8102:
8103: ($ownerdomain,$ownername) =
8104: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8105:
8106: # The URL does not really point to any authorspace, forget it
8107: unless (($ownername) && ($ownerdomain)) { return ''; }
8108:
8109: # Now we need to see if the user has access to the authorspace of
8110: # $ownername at $ownerdomain
8111:
8112: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8113: # Real author for this?
8114: $ownerhome = $env{'user.home'};
8115: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8116: return ($ownername,$ownerdomain,$ownerhome);
8117: }
8118: } else {
8119: # Co-author for this?
8120: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8121: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8122: $ownerhome = &homeserver($ownername,$ownerdomain);
8123: return ($ownername,$ownerdomain,$ownerhome);
8124: }
8125: if ($env{'request.course.id'}) {
8126: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8127: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8128: if (&allowed('mdc',$env{'request.course.id'})) {
8129: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8130: return ($ownername,$ownerdomain,$ownerhome);
8131: }
8132: }
8133: }
8134: }
8135:
8136: # We don't have any access right now. If we are not possibly going to do anything about this,
8137: # we might as well leave
8138: unless ($setpriv) { return ''; }
8139:
8140: # Backdoor access?
8141: my $allowed=&allowed('eco',$ownerdomain);
8142: # Nope
8143: unless ($allowed) { return ''; }
8144: # Looks like we may have access, but could be locked by the owner of the construction space
8145: if ($allowed eq 'U') {
8146: my %blocked=&get('environment',['domcoord.author'],
8147: $ownerdomain,$ownername);
8148: # Is blocked by owner
8149: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8150: }
8151: if (($allowed eq 'F') || ($allowed eq 'U')) {
8152: # Grant temporary access
8153: my $then=$env{'user.login.time'};
8154: my $update=$env{'user.update.time'};
8155: if (!$update) { $update = $then; }
8156: my $refresh=$env{'user.refresh.time'};
8157: if (!$refresh) { $refresh = $update; }
8158: my $now = time;
8159: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8160: $now,'ca','constructaccess');
8161: $ownerhome = &homeserver($ownername,$ownerdomain);
8162: return($ownername,$ownerdomain,$ownerhome);
8163: }
8164: # No business here
8165: return '';
8166: }
8167:
8168: # ----------------------------------------------------------- Content Blocking
8169:
8170: {
8171: # Caches for faster Course Contents display where content blocking
8172: # is in operation (i.e., interval param set) for timed quiz.
8173: #
8174: # User for whom data are being temporarily cached.
8175: my $cacheduser='';
8176: # Cached blockers for this user (a hash of blocking items).
8177: my %cachedblockers=();
8178: # When the data were last cached.
8179: my $cachedlast='';
8180:
8181: sub load_all_blockers {
8182: my ($uname,$udom,$blocks)=@_;
8183: if (($uname ne '') && ($udom ne '')) {
8184: if (($cacheduser eq $uname.':'.$udom) &&
8185: (abs($cachedlast-time)<5)) {
8186: return;
8187: }
8188: }
8189: $cachedlast=time;
8190: $cacheduser=$uname.':'.$udom;
8191: %cachedblockers = &get_commblock_resources($blocks);
8192: }
8193:
8194: sub get_comm_blocks {
8195: my ($cdom,$cnum) = @_;
8196: if ($cdom eq '' || $cnum eq '') {
8197: return unless ($env{'request.course.id'});
8198: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8199: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8200: }
8201: my %commblocks;
8202: my $hashid=$cdom.'_'.$cnum;
8203: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8204: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8205: %commblocks = %{$blocksref};
8206: } else {
8207: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8208: my $cachetime = 600;
8209: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8210: }
8211: return %commblocks;
8212: }
8213:
8214: sub get_commblock_resources {
8215: my ($blocks) = @_;
8216: my %blockers = ();
8217: return %blockers unless ($env{'request.course.id'});
8218: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8219: my %commblocks;
8220: if (ref($blocks) eq 'HASH') {
8221: %commblocks = %{$blocks};
8222: } else {
8223: %commblocks = &get_comm_blocks();
8224: }
8225: return %blockers unless (keys(%commblocks) > 0);
8226: my $navmap = Apache::lonnavmaps::navmap->new();
8227: return %blockers unless (ref($navmap));
8228: my $now = time;
8229: foreach my $block (keys(%commblocks)) {
8230: if ($block =~ /^(\d+)____(\d+)$/) {
8231: my ($start,$end) = ($1,$2);
8232: if ($start <= $now && $end >= $now) {
8233: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8234: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8235: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8236: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8237: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8238: }
8239: }
8240: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8241: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8242: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8243: }
8244: }
8245: }
8246: }
8247: }
8248: } elsif ($block =~ /^firstaccess____(.+)$/) {
8249: my $item = $1;
8250: my @to_test;
8251: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8252: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8253: my @interval;
8254: my $type = 'map';
8255: if ($item eq 'course') {
8256: $type = 'course';
8257: @interval=&EXT("resource.0.interval");
8258: } else {
8259: if ($item =~ /___\d+___/) {
8260: $type = 'resource';
8261: @interval=&EXT("resource.0.interval",$item);
8262: if (ref($navmap)) {
8263: my $res = $navmap->getBySymb($item);
8264: push(@to_test,$res);
8265: }
8266: } else {
8267: my $mapsymb = &symbread($item,1);
8268: if ($mapsymb) {
8269: if (ref($navmap)) {
8270: my $mapres = $navmap->getBySymb($mapsymb);
8271: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8272: foreach my $res (@to_test) {
8273: my $symb = $res->symb();
8274: next if ($symb eq $mapsymb);
8275: if ($symb ne '') {
8276: @interval=&EXT("resource.0.interval",$symb);
8277: if ($interval[1] eq 'map') {
8278: last;
8279: }
8280: }
8281: }
8282: }
8283: }
8284: }
8285: }
8286: if ($interval[0] =~ /^(\d+)/) {
8287: my $timelimit = $1;
8288: my $first_access;
8289: if ($type eq 'resource') {
8290: $first_access=&get_first_access($interval[1],$item);
8291: } elsif ($type eq 'map') {
8292: $first_access=&get_first_access($interval[1],undef,$item);
8293: } else {
8294: $first_access=&get_first_access($interval[1]);
8295: }
8296: if ($first_access) {
8297: my $timesup = $first_access+$timelimit;
8298: if ($timesup > $now) {
8299: my $activeblock;
8300: foreach my $res (@to_test) {
8301: if ($res->answerable()) {
8302: $activeblock = 1;
8303: last;
8304: }
8305: }
8306: if ($activeblock) {
8307: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8308: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8309: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8310: }
8311: }
8312: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8313: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8314: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8315: }
8316: }
8317: }
8318: }
8319: }
8320: }
8321: }
8322: }
8323: }
8324: }
8325: return %blockers;
8326: }
8327:
8328: sub has_comm_blocking {
8329: my ($priv,$symb,$uri,$blocks) = @_;
8330: my @blockers;
8331: return unless ($env{'request.course.id'});
8332: return unless ($priv eq 'bre');
8333: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8334: return if ($env{'request.state'} eq 'construct');
8335: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8336: return unless (keys(%cachedblockers) > 0);
8337: my (%possibles,@symbs);
8338: if (!$symb) {
8339: $symb = &symbread($uri,1,1,1,\%possibles);
8340: }
8341: if ($symb) {
8342: @symbs = ($symb);
8343: } elsif (keys(%possibles)) {
8344: @symbs = keys(%possibles);
8345: }
8346: my $noblock;
8347: foreach my $symb (@symbs) {
8348: last if ($noblock);
8349: my ($map,$resid,$resurl)=&decode_symb($symb);
8350: foreach my $block (keys(%cachedblockers)) {
8351: if ($block =~ /^firstaccess____(.+)$/) {
8352: my $item = $1;
8353: if (($item eq $map) || ($item eq $symb)) {
8354: $noblock = 1;
8355: last;
8356: }
8357: }
8358: if (ref($cachedblockers{$block}) eq 'HASH') {
8359: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8360: if ($cachedblockers{$block}{'resources'}{$symb}) {
8361: unless (grep(/^\Q$block\E$/,@blockers)) {
8362: push(@blockers,$block);
8363: }
8364: }
8365: }
8366: }
8367: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8368: if ($cachedblockers{$block}{'maps'}{$map}) {
8369: unless (grep(/^\Q$block\E$/,@blockers)) {
8370: push(@blockers,$block);
8371: }
8372: }
8373: }
8374: }
8375: }
8376: return if ($noblock);
8377: return @blockers;
8378: }
8379: }
8380:
8381: # -------------------------------- Deversion and split uri into path an filename
8382:
8383: #
8384: # Removes the version from a URI and
8385: # splits it in to its filename and path to the filename.
8386: # Seems like File::Basename could have done this more clearly.
8387: # Parameters:
8388: # $uri - input URI
8389: # Returns:
8390: # Two element list consisting of
8391: # $pathname - the URI up to and excluding the trailing /
8392: # $filename - The part of the URI following the last /
8393: # NOTE:
8394: # Another realization of this is simply:
8395: # use File::Basename;
8396: # ...
8397: # $uri = shift;
8398: # $filename = basename($uri);
8399: # $path = dirname($uri);
8400: # return ($filename, $path);
8401: #
8402: # The implementation below is probably faster however.
8403: #
8404: sub split_uri_for_cond {
8405: my $uri=&deversion(&declutter(shift));
8406: my @uriparts=split(/\//,$uri);
8407: my $filename=pop(@uriparts);
8408: my $pathname=join('/',@uriparts);
8409: return ($pathname,$filename);
8410: }
8411: # --------------------------------------------------- Is a resource on the map?
8412:
8413: sub is_on_map {
8414: my ($pathname,$filename) = &split_uri_for_cond(shift);
8415: #Trying to find the conditional for the file
8416: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8417: /\&\Q$filename\E\:([\d\|]+)\&/);
8418: if ($match) {
8419: return (1,$1);
8420: } else {
8421: return (0,0);
8422: }
8423: }
8424:
8425: # --------------------------------------------------------- Get symb from alias
8426:
8427: sub get_symb_from_alias {
8428: my $symb=shift;
8429: my ($map,$resid,$url)=&decode_symb($symb);
8430: # Already is a symb
8431: if ($url) { return $symb; }
8432: # Must be an alias
8433: my $aliassymb='';
8434: my %bighash;
8435: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8436: &GDBM_READER(),0640)) {
8437: my $rid=$bighash{'mapalias_'.$symb};
8438: if ($rid) {
8439: my ($mapid,$resid)=split(/\./,$rid);
8440: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8441: $resid,$bighash{'src_'.$rid});
8442: }
8443: untie %bighash;
8444: }
8445: return $aliassymb;
8446: }
8447:
8448: # ----------------------------------------------------------------- Define Role
8449:
8450: sub definerole {
8451: if (allowed('mcr','/')) {
8452: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8453: foreach my $role (split(':',$sysrole)) {
8454: my ($crole,$cqual)=split(/\&/,$role);
8455: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8456: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8457: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8458: return "refused:s:$crole&$cqual";
8459: }
8460: }
8461: }
8462: foreach my $role (split(':',$domrole)) {
8463: my ($crole,$cqual)=split(/\&/,$role);
8464: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8465: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8466: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8467: return "refused:d:$crole&$cqual";
8468: }
8469: }
8470: }
8471: foreach my $role (split(':',$courole)) {
8472: my ($crole,$cqual)=split(/\&/,$role);
8473: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8474: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8475: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8476: return "refused:c:$crole&$cqual";
8477: }
8478: }
8479: }
8480: my $uhome;
8481: if (($uname ne '') && ($udom ne '')) {
8482: $uhome = &homeserver($uname,$udom);
8483: return $uhome if ($uhome eq 'no_host');
8484: } else {
8485: $uname = $env{'user.name'};
8486: $udom = $env{'user.domain'};
8487: $uhome = $env{'user.home'};
8488: }
8489: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8490: "$udom:$uname:rolesdef_$rolename=".
8491: escape($sysrole.'_'.$domrole.'_'.$courole);
8492: return reply($command,$uhome);
8493: } else {
8494: return 'refused';
8495: }
8496: }
8497:
8498: # ---------------- Make a metadata query against the network of library servers
8499:
8500: sub metadata_query {
8501: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8502: my %rhash;
8503: my %libserv = &all_library();
8504: my @server_list = (defined($server_array) ? @$server_array
8505: : keys(%libserv) );
8506: for my $server (@server_list) {
8507: my $domains = '';
8508: if (ref($domains_hash) eq 'HASH') {
8509: $domains = $domains_hash->{$server};
8510: }
8511: unless ($custom or $customshow) {
8512: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8513: $rhash{$server}=$reply;
8514: }
8515: else {
8516: my $reply=&reply("querysend:".&escape($query).':'.
8517: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8518: $server);
8519: $rhash{$server}=$reply;
8520: }
8521: }
8522: return \%rhash;
8523: }
8524:
8525: # ----------------------------------------- Send log queries and wait for reply
8526:
8527: sub log_query {
8528: my ($uname,$udom,$query,%filters)=@_;
8529: my $uhome=&homeserver($uname,$udom);
8530: if ($uhome eq 'no_host') { return 'error: no_host'; }
8531: my $uhost=&hostname($uhome);
8532: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8533: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8534: $uhome);
8535: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8536: return get_query_reply($queryid);
8537: }
8538:
8539: # -------------------------- Update MySQL table for portfolio file
8540:
8541: sub update_portfolio_table {
8542: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8543: if ($group ne '') {
8544: $file_name =~s /^\Q$group\E//;
8545: }
8546: my $homeserver = &homeserver($uname,$udom);
8547: my $queryid=
8548: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8549: ':'.&escape($file_name).':'.$action,$homeserver);
8550: my $reply = &get_query_reply($queryid);
8551: return $reply;
8552: }
8553:
8554: # -------------------------- Update MySQL allusers table
8555:
8556: sub update_allusers_table {
8557: my ($uname,$udom,$names) = @_;
8558: my $homeserver = &homeserver($uname,$udom);
8559: my $queryid=
8560: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8561: 'lastname='.&escape($names->{'lastname'}).'%%'.
8562: 'firstname='.&escape($names->{'firstname'}).'%%'.
8563: 'middlename='.&escape($names->{'middlename'}).'%%'.
8564: 'generation='.&escape($names->{'generation'}).'%%'.
8565: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8566: 'id='.&escape($names->{'id'}),$homeserver);
8567: return;
8568: }
8569:
8570: # ------- Request retrieval of institutional classlists for course(s)
8571:
8572: sub fetch_enrollment_query {
8573: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8574: my ($homeserver,$sleep,$loopmax);
8575: my $maxtries = 1;
8576: if ($context eq 'automated') {
8577: $homeserver = $perlvar{'lonHostID'};
8578: $sleep = 2;
8579: $loopmax = 100;
8580: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8581: } else {
8582: $homeserver = &homeserver($cnum,$dom);
8583: }
8584: my $host=&hostname($homeserver);
8585: my $cmd = '';
8586: foreach my $affiliate (keys(%{$affiliatesref})) {
8587: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8588: }
8589: $cmd =~ s/%%$//;
8590: $cmd = &escape($cmd);
8591: my $query = 'fetchenrollment';
8592: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8593: unless ($queryid=~/^\Q$host\E\_/) {
8594: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8595: return 'error: '.$queryid;
8596: }
8597: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8598: my $tries = 1;
8599: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8600: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8601: $tries ++;
8602: }
8603: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8604: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8605: } else {
8606: my @responses = split(/:/,$reply);
8607: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8608: foreach my $line (@responses) {
8609: my ($key,$value) = split(/=/,$line,2);
8610: $$replyref{$key} = $value;
8611: }
8612: } else {
8613: my $pathname = LONCAPA::tempdir();
8614: foreach my $line (@responses) {
8615: my ($key,$value) = split(/=/,$line);
8616: $$replyref{$key} = $value;
8617: if ($value > 0) {
8618: foreach my $item (@{$$affiliatesref{$key}}) {
8619: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8620: my $destname = $pathname.'/'.$filename;
8621: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8622: if ($xml_classlist =~ /^error/) {
8623: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8624: } else {
8625: if ( open(FILE,">",$destname) ) {
8626: print FILE &unescape($xml_classlist);
8627: close(FILE);
8628: } else {
8629: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8630: }
8631: }
8632: }
8633: }
8634: }
8635: }
8636: return 'ok';
8637: }
8638: return 'error';
8639: }
8640:
8641: sub get_query_reply {
8642: my ($queryid,$sleep,$loopmax) = @_;;
8643: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8644: $sleep = 0.2;
8645: }
8646: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8647: $loopmax = 100;
8648: }
8649: my $replyfile=LONCAPA::tempdir().$queryid;
8650: my $reply='';
8651: for (1..$loopmax) {
8652: sleep($sleep);
8653: if (-e $replyfile.'.end') {
8654: if (open(my $fh,"<",$replyfile)) {
8655: $reply = join('',<$fh>);
8656: close($fh);
8657: } else { return 'error: reply_file_error'; }
8658: return &unescape($reply);
8659: }
8660: }
8661: return 'timeout:'.$queryid;
8662: }
8663:
8664: sub courselog_query {
8665: #
8666: # possible filters:
8667: # url: url or symb
8668: # username
8669: # domain
8670: # action: view, submit, grade
8671: # start: timestamp
8672: # end: timestamp
8673: #
8674: my (%filters)=@_;
8675: unless ($env{'request.course.id'}) { return 'no_course'; }
8676: if ($filters{'url'}) {
8677: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8678: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8679: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8680: }
8681: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8682: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8683: return &log_query($cname,$cdom,'courselog',%filters);
8684: }
8685:
8686: sub userlog_query {
8687: #
8688: # possible filters:
8689: # action: log check role
8690: # start: timestamp
8691: # end: timestamp
8692: #
8693: my ($uname,$udom,%filters)=@_;
8694: return &log_query($uname,$udom,'userlog',%filters);
8695: }
8696:
8697: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8698:
8699: sub auto_run {
8700: my ($cnum,$cdom) = @_;
8701: my $response = 0;
8702: my $settings;
8703: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8704: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8705: $settings = $domconfig{'autoenroll'};
8706: if ($settings->{'run'} eq '1') {
8707: $response = 1;
8708: }
8709: } else {
8710: my $homeserver;
8711: if (&is_course($cdom,$cnum)) {
8712: $homeserver = &homeserver($cnum,$cdom);
8713: } else {
8714: $homeserver = &domain($cdom,'primary');
8715: }
8716: if ($homeserver ne 'no_host') {
8717: $response = &reply('autorun:'.$cdom,$homeserver);
8718: }
8719: }
8720: return $response;
8721: }
8722:
8723: sub auto_get_sections {
8724: my ($cnum,$cdom,$inst_coursecode) = @_;
8725: my $homeserver;
8726: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8727: $homeserver = &homeserver($cnum,$cdom);
8728: }
8729: if (!defined($homeserver)) {
8730: if ($cdom =~ /^$match_domain$/) {
8731: $homeserver = &domain($cdom,'primary');
8732: }
8733: }
8734: my @secs;
8735: if (defined($homeserver)) {
8736: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8737: unless ($response eq 'refused') {
8738: @secs = split(/:/,$response);
8739: }
8740: }
8741: return @secs;
8742: }
8743:
8744: sub auto_new_course {
8745: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8746: my $homeserver = &homeserver($cnum,$cdom);
8747: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8748: return $response;
8749: }
8750:
8751: sub auto_validate_courseID {
8752: my ($cnum,$cdom,$inst_course_id) = @_;
8753: my $homeserver = &homeserver($cnum,$cdom);
8754: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8755: return $response;
8756: }
8757:
8758: sub auto_validate_instcode {
8759: my ($cnum,$cdom,$instcode,$owner) = @_;
8760: my ($homeserver,$response);
8761: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8762: $homeserver = &homeserver($cnum,$cdom);
8763: }
8764: if (!defined($homeserver)) {
8765: if ($cdom =~ /^$match_domain$/) {
8766: $homeserver = &domain($cdom,'primary');
8767: }
8768: }
8769: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8770: &escape($instcode).':'.&escape($owner),$homeserver));
8771: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8772: return ($outcome,$description,$defaultcredits);
8773: }
8774:
8775: sub auto_create_password {
8776: my ($cnum,$cdom,$authparam,$udom) = @_;
8777: my ($homeserver,$response);
8778: my $create_passwd = 0;
8779: my $authchk = '';
8780: if ($udom =~ /^$match_domain$/) {
8781: $homeserver = &domain($udom,'primary');
8782: }
8783: if ($homeserver eq '') {
8784: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8785: $homeserver = &homeserver($cnum,$cdom);
8786: }
8787: }
8788: if ($homeserver eq '') {
8789: $authchk = 'nodomain';
8790: } else {
8791: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8792: if ($response eq 'refused') {
8793: $authchk = 'refused';
8794: } else {
8795: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8796: }
8797: }
8798: return ($authparam,$create_passwd,$authchk);
8799: }
8800:
8801: sub auto_photo_permission {
8802: my ($cnum,$cdom,$students) = @_;
8803: my $homeserver = &homeserver($cnum,$cdom);
8804: my ($outcome,$perm_reqd,$conditions) =
8805: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8806: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8807: return (undef,undef);
8808: }
8809: return ($outcome,$perm_reqd,$conditions);
8810: }
8811:
8812: sub auto_checkphotos {
8813: my ($uname,$udom,$pid) = @_;
8814: my $homeserver = &homeserver($uname,$udom);
8815: my ($result,$resulttype);
8816: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8817: &escape($uname).':'.&escape($pid),
8818: $homeserver));
8819: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8820: return (undef,undef);
8821: }
8822: if ($outcome) {
8823: ($result,$resulttype) = split(/:/,$outcome);
8824: }
8825: return ($result,$resulttype);
8826: }
8827:
8828: sub auto_photochoice {
8829: my ($cnum,$cdom) = @_;
8830: my $homeserver = &homeserver($cnum,$cdom);
8831: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8832: &escape($cdom),
8833: $homeserver)));
8834: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8835: return (undef,undef);
8836: }
8837: return ($update,$comment);
8838: }
8839:
8840: sub auto_photoupdate {
8841: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8842: my $homeserver = &homeserver($cnum,$dom);
8843: my $host=&hostname($homeserver);
8844: my $cmd = '';
8845: my $maxtries = 1;
8846: foreach my $affiliate (keys(%{$affiliatesref})) {
8847: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8848: }
8849: $cmd =~ s/%%$//;
8850: $cmd = &escape($cmd);
8851: my $query = 'institutionalphotos';
8852: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8853: unless ($queryid=~/^\Q$host\E\_/) {
8854: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8855: return 'error: '.$queryid;
8856: }
8857: my $reply = &get_query_reply($queryid);
8858: my $tries = 1;
8859: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8860: $reply = &get_query_reply($queryid);
8861: $tries ++;
8862: }
8863: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8864: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8865: } else {
8866: my @responses = split(/:/,$reply);
8867: my $outcome = shift(@responses);
8868: foreach my $item (@responses) {
8869: my ($key,$value) = split(/=/,$item);
8870: $$photo{$key} = $value;
8871: }
8872: return $outcome;
8873: }
8874: return 'error';
8875: }
8876:
8877: sub auto_instcode_format {
8878: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8879: $cat_order) = @_;
8880: my $courses = '';
8881: my @homeservers;
8882: if ($caller eq 'global') {
8883: my %servers = &get_servers($codedom,'library');
8884: foreach my $tryserver (keys(%servers)) {
8885: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8886: push(@homeservers,$tryserver);
8887: }
8888: }
8889: } elsif ($caller eq 'requests') {
8890: if ($codedom =~ /^$match_domain$/) {
8891: my $chome = &domain($codedom,'primary');
8892: unless ($chome eq 'no_host') {
8893: push(@homeservers,$chome);
8894: }
8895: }
8896: } else {
8897: push(@homeservers,&homeserver($caller,$codedom));
8898: }
8899: foreach my $code (keys(%{$instcodes})) {
8900: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8901: }
8902: chop($courses);
8903: my $ok_response = 0;
8904: my $response;
8905: while (@homeservers > 0 && $ok_response == 0) {
8906: my $server = shift(@homeservers);
8907: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8908: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8909: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8910: split(/:/,$response);
8911: %{$codes} = (%{$codes},&str2hash($codes_str));
8912: push(@{$codetitles},&str2array($codetitles_str));
8913: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8914: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8915: $ok_response = 1;
8916: }
8917: }
8918: if ($ok_response) {
8919: return 'ok';
8920: } else {
8921: return $response;
8922: }
8923: }
8924:
8925: sub auto_instcode_defaults {
8926: my ($domain,$returnhash,$code_order) = @_;
8927: my @homeservers;
8928:
8929: my %servers = &get_servers($domain,'library');
8930: foreach my $tryserver (keys(%servers)) {
8931: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8932: push(@homeservers,$tryserver);
8933: }
8934: }
8935:
8936: my $response;
8937: foreach my $server (@homeservers) {
8938: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8939: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8940:
8941: foreach my $pair (split(/\&/,$response)) {
8942: my ($name,$value)=split(/\=/,$pair);
8943: if ($name eq 'code_order') {
8944: @{$code_order} = split(/\&/,&unescape($value));
8945: } else {
8946: $returnhash->{&unescape($name)}=&unescape($value);
8947: }
8948: }
8949: return 'ok';
8950: }
8951:
8952: return $response;
8953: }
8954:
8955: sub auto_possible_instcodes {
8956: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8957: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8958: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8959: return;
8960: }
8961: my (@homeservers,$uhome);
8962: if (defined(&domain($domain,'primary'))) {
8963: $uhome=&domain($domain,'primary');
8964: push(@homeservers,&domain($domain,'primary'));
8965: } else {
8966: my %servers = &get_servers($domain,'library');
8967: foreach my $tryserver (keys(%servers)) {
8968: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8969: push(@homeservers,$tryserver);
8970: }
8971: }
8972: }
8973: my $response;
8974: foreach my $server (@homeservers) {
8975: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8976: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8977: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8978: split(':',$response);
8979: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8980: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8981: foreach my $item (split('&',$cat_title)) {
8982: my ($name,$value)=split('=',$item);
8983: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8984: }
8985: foreach my $item (split('&',$cat_order)) {
8986: my ($name,$value)=split('=',$item);
8987: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8988: }
8989: return 'ok';
8990: }
8991: return $response;
8992: }
8993:
8994: sub auto_courserequest_checks {
8995: my ($dom) = @_;
8996: my ($homeserver,%validations);
8997: if ($dom =~ /^$match_domain$/) {
8998: $homeserver = &domain($dom,'primary');
8999: }
9000: unless ($homeserver eq 'no_host') {
9001: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9002: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9003: my @items = split(/&/,$response);
9004: foreach my $item (@items) {
9005: my ($key,$value) = split('=',$item);
9006: $validations{&unescape($key)} = &thaw_unescape($value);
9007: }
9008: }
9009: }
9010: return %validations;
9011: }
9012:
9013: sub auto_courserequest_validation {
9014: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9015: my ($homeserver,$response);
9016: if ($dom =~ /^$match_domain$/) {
9017: $homeserver = &domain($dom,'primary');
9018: }
9019: unless ($homeserver eq 'no_host') {
9020: my $customdata;
9021: if (ref($custominfo) eq 'HASH') {
9022: $customdata = &freeze_escape($custominfo);
9023: }
9024: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9025: ':'.&escape($crstype).':'.&escape($inststatuslist).
9026: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9027: $customdata,$homeserver));
9028: }
9029: return $response;
9030: }
9031:
9032: sub auto_validate_class_sec {
9033: my ($cdom,$cnum,$owners,$inst_class) = @_;
9034: my $homeserver = &homeserver($cnum,$cdom);
9035: my $ownerlist;
9036: if (ref($owners) eq 'ARRAY') {
9037: $ownerlist = join(',',@{$owners});
9038: } else {
9039: $ownerlist = $owners;
9040: }
9041: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9042: &escape($ownerlist).':'.$cdom,$homeserver);
9043: return $response;
9044: }
9045:
9046: sub auto_validate_instclasses {
9047: my ($cdom,$cnum,$owners,$classesref) = @_;
9048: my ($homeserver,%validations);
9049: $homeserver = &homeserver($cnum,$cdom);
9050: unless ($homeserver eq 'no_host') {
9051: my $ownerlist;
9052: if (ref($owners) eq 'ARRAY') {
9053: $ownerlist = join(',',@{$owners});
9054: } else {
9055: $ownerlist = $owners;
9056: }
9057: if (ref($classesref) eq 'HASH') {
9058: my $classes = &freeze_escape($classesref);
9059: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9060: ':'.$cdom.':'.$classes,$homeserver);
9061: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9062: my @items = split(/&/,$response);
9063: foreach my $item (@items) {
9064: my ($key,$value) = split('=',$item);
9065: $validations{&unescape($key)} = &thaw_unescape($value);
9066: }
9067: }
9068: }
9069: }
9070: return %validations;
9071: }
9072:
9073: sub auto_crsreq_update {
9074: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9075: $code,$accessstart,$accessend,$inbound) = @_;
9076: my ($homeserver,%crsreqresponse);
9077: if ($cdom =~ /^$match_domain$/) {
9078: $homeserver = &domain($cdom,'primary');
9079: }
9080: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9081: my $info;
9082: if (ref($inbound) eq 'HASH') {
9083: $info = &freeze_escape($inbound);
9084: }
9085: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9086: ':'.&escape($action).':'.&escape($ownername).':'.
9087: &escape($ownerdomain).':'.&escape($fullname).':'.
9088: &escape($title).':'.&escape($code).':'.
9089: &escape($accessstart).':'.&escape($accessend).':'.$info,
9090: $homeserver);
9091: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9092: my @items = split(/&/,$response);
9093: foreach my $item (@items) {
9094: my ($key,$value) = split('=',$item);
9095: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9096: }
9097: }
9098: }
9099: return \%crsreqresponse;
9100: }
9101:
9102: sub auto_export_grades {
9103: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9104: my ($homeserver,%exportresponse);
9105: if ($cdom =~ /^$match_domain$/) {
9106: $homeserver = &domain($cdom,'primary');
9107: }
9108: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9109: my $info;
9110: if (ref($inforef) eq 'HASH') {
9111: $info = &freeze_escape($inforef);
9112: }
9113: if (ref($gradesref) eq 'HASH') {
9114: my $grades = &freeze_escape($gradesref);
9115: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9116: $info.':'.$grades,$homeserver);
9117: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9118: my @items = split(/&/,$response);
9119: foreach my $item (@items) {
9120: my ($key,$value) = split('=',$item);
9121: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9122: }
9123: }
9124: }
9125: }
9126: return \%exportresponse;
9127: }
9128:
9129: sub check_instcode_cloning {
9130: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9131: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9132: return;
9133: }
9134: my $canclone;
9135: if (@{$code_order} > 0) {
9136: my $instcoderegexp ='^';
9137: my @clonecodes = split(/\&/,$cloner);
9138: foreach my $item (@{$code_order}) {
9139: if (grep(/^\Q$item\E=/,@clonecodes)) {
9140: foreach my $pair (@clonecodes) {
9141: my ($key,$val) = split(/\=/,$pair,2);
9142: $val = &unescape($val);
9143: if ($key eq $item) {
9144: $instcoderegexp .= '('.$val.')';
9145: last;
9146: }
9147: }
9148: } else {
9149: $instcoderegexp .= $codedefaults->{$item};
9150: }
9151: }
9152: $instcoderegexp .= '$';
9153: my (@from,@to);
9154: eval {
9155: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9156: (@to) = ($clonetocode =~ /$instcoderegexp/);
9157: };
9158: if ((@from > 0) && (@to > 0)) {
9159: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9160: if (!@diffs) {
9161: $canclone = 1;
9162: }
9163: }
9164: }
9165: return $canclone;
9166: }
9167:
9168: sub default_instcode_cloning {
9169: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9170: my (%codedefaults,@code_order,$canclone);
9171: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9172: %codedefaults = %{$codedefaultsref};
9173: @code_order = @{$codeorderref};
9174: } elsif ($clonedom) {
9175: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9176: }
9177: if (($domdefclone) && (@code_order)) {
9178: my @clonecodes = split(/\+/,$domdefclone);
9179: my $instcoderegexp ='^';
9180: foreach my $item (@code_order) {
9181: if (grep(/^\Q$item\E$/,@clonecodes)) {
9182: $instcoderegexp .= '('.$codedefaults{$item}.')';
9183: } else {
9184: $instcoderegexp .= $codedefaults{$item};
9185: }
9186: }
9187: $instcoderegexp .= '$';
9188: my (@from,@to);
9189: eval {
9190: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9191: (@to) = ($clonetocode =~ /$instcoderegexp/);
9192: };
9193: if ((@from > 0) && (@to > 0)) {
9194: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9195: if (!@diffs) {
9196: $canclone = 1;
9197: }
9198: }
9199: }
9200: return $canclone;
9201: }
9202:
9203: # ------------------------------------------------------- Course Group routines
9204:
9205: sub get_coursegroups {
9206: my ($cdom,$cnum,$group,$namespace) = @_;
9207: return(&dump($namespace,$cdom,$cnum,$group));
9208: }
9209:
9210: sub modify_coursegroup {
9211: my ($cdom,$cnum,$groupsettings) = @_;
9212: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9213: }
9214:
9215: sub toggle_coursegroup_status {
9216: my ($cdom,$cnum,$group,$action) = @_;
9217: my ($from_namespace,$to_namespace);
9218: if ($action eq 'delete') {
9219: $from_namespace = 'coursegroups';
9220: $to_namespace = 'deleted_groups';
9221: } else {
9222: $from_namespace = 'deleted_groups';
9223: $to_namespace = 'coursegroups';
9224: }
9225: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9226: if (my $tmp = &error(%curr_group)) {
9227: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9228: return ('read error',$tmp);
9229: } else {
9230: my %savedsettings = %curr_group;
9231: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9232: my $deloutcome;
9233: if ($result eq 'ok') {
9234: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9235: } else {
9236: return ('write error',$result);
9237: }
9238: if ($deloutcome eq 'ok') {
9239: return 'ok';
9240: } else {
9241: return ('delete error',$deloutcome);
9242: }
9243: }
9244: }
9245:
9246: sub modify_group_roles {
9247: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9248: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9249: my $role = 'gr/'.&escape($userprivs);
9250: my ($uname,$udom) = split(/:/,$user);
9251: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9252: if ($result eq 'ok') {
9253: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9254: }
9255: return $result;
9256: }
9257:
9258: sub modify_coursegroup_membership {
9259: my ($cdom,$cnum,$membership) = @_;
9260: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9261: return $result;
9262: }
9263:
9264: sub get_active_groups {
9265: my ($udom,$uname,$cdom,$cnum) = @_;
9266: my $now = time;
9267: my %groups = ();
9268: foreach my $key (keys(%env)) {
9269: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9270: my ($start,$end) = split(/\./,$env{$key});
9271: if (($end!=0) && ($end<$now)) { next; }
9272: if (($start!=0) && ($start>$now)) { next; }
9273: if ($1 eq $cdom && $2 eq $cnum) {
9274: $groups{$3} = $env{$key} ;
9275: }
9276: }
9277: }
9278: return %groups;
9279: }
9280:
9281: sub get_group_membership {
9282: my ($cdom,$cnum,$group) = @_;
9283: return(&dump('groupmembership',$cdom,$cnum,$group));
9284: }
9285:
9286: sub get_users_groups {
9287: my ($udom,$uname,$courseid) = @_;
9288: my @usersgroups;
9289: my $cachetime=1800;
9290:
9291: my $hashid="$udom:$uname:$courseid";
9292: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9293: if (defined($cached)) {
9294: @usersgroups = split(/:/,$grouplist);
9295: } else {
9296: $grouplist = '';
9297: my $courseurl = &courseid_to_courseurl($courseid);
9298: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9299: my $access_end = $env{'course.'.$courseid.
9300: '.default_enrollment_end_date'};
9301: my $now = time;
9302: foreach my $key (keys(%roleshash)) {
9303: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9304: my $group = $1;
9305: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9306: my $start = $2;
9307: my $end = $1;
9308: if ($start == -1) { next; } # deleted from group
9309: if (($start!=0) && ($start>$now)) { next; }
9310: if (($end!=0) && ($end<$now)) {
9311: if ($access_end && $access_end < $now) {
9312: if ($access_end - $end < 86400) {
9313: push(@usersgroups,$group);
9314: }
9315: }
9316: next;
9317: }
9318: push(@usersgroups,$group);
9319: }
9320: }
9321: }
9322: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9323: $grouplist = join(':',@usersgroups);
9324: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9325: }
9326: return @usersgroups;
9327: }
9328:
9329: sub devalidate_getgroups_cache {
9330: my ($udom,$uname,$cdom,$cnum)=@_;
9331: my $courseid = $cdom.'_'.$cnum;
9332:
9333: my $hashid="$udom:$uname:$courseid";
9334: &devalidate_cache_new('getgroups',$hashid);
9335: }
9336:
9337: # ------------------------------------------------------------------ Plain Text
9338:
9339: sub plaintext {
9340: my ($short,$type,$cid,$forcedefault) = @_;
9341: if ($short =~ m{^cr/}) {
9342: return (split('/',$short))[-1];
9343: }
9344: if (!defined($cid)) {
9345: $cid = $env{'request.course.id'};
9346: }
9347: my %rolenames = (
9348: Course => 'std',
9349: Community => 'alt1',
9350: Placement => 'std',
9351: );
9352: if ($cid ne '') {
9353: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9354: unless ($forcedefault) {
9355: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9356: &Apache::lonlocal::mt_escape(\$roletext);
9357: return &Apache::lonlocal::mt($roletext);
9358: }
9359: }
9360: }
9361: if ((defined($type)) && (defined($rolenames{$type})) &&
9362: (defined($rolenames{$type})) &&
9363: (defined($prp{$short}{$rolenames{$type}}))) {
9364: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9365: } elsif ($cid ne '') {
9366: my $crstype = $env{'course.'.$cid.'.type'};
9367: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9368: (defined($prp{$short}{$rolenames{$crstype}}))) {
9369: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9370: }
9371: }
9372: return &Apache::lonlocal::mt($prp{$short}{'std'});
9373: }
9374:
9375: # ----------------------------------------------------------------- Assign Role
9376:
9377: sub assignrole {
9378: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9379: $context)=@_;
9380: my $mrole;
9381: if ($role =~ /^cr\//) {
9382: my $cwosec=$url;
9383: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9384: unless (&allowed('ccr',$cwosec)) {
9385: my $refused = 1;
9386: if ($context eq 'requestcourses') {
9387: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9388: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9389: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9390: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9391: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9392: if ($crsenv{'internal.courseowner'} eq
9393: $env{'user.name'}.':'.$env{'user.domain'}) {
9394: $refused = '';
9395: }
9396: }
9397: }
9398: }
9399: }
9400: if ($refused) {
9401: &logthis('Refused custom assignrole: '.
9402: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9403: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9404: return 'refused';
9405: }
9406: }
9407: $mrole='cr';
9408: } elsif ($role =~ /^gr\//) {
9409: my $cwogrp=$url;
9410: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9411: unless (&allowed('mdg',$cwogrp)) {
9412: &logthis('Refused group assignrole: '.
9413: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9414: $env{'user.name'}.' at '.$env{'user.domain'});
9415: return 'refused';
9416: }
9417: $mrole='gr';
9418: } else {
9419: my $cwosec=$url;
9420: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9421: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9422: my $refused;
9423: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9424: if (!(&allowed('c'.$role,$url))) {
9425: $refused = 1;
9426: }
9427: } else {
9428: $refused = 1;
9429: }
9430: if ($refused) {
9431: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9432: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9433: my %crsenv;
9434: if ($role eq 'cc' || $role eq 'co') {
9435: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9436: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9437: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9438: if ($crsenv{'internal.courseowner'} eq
9439: $env{'user.name'}.':'.$env{'user.domain'}) {
9440: $refused = '';
9441: }
9442: }
9443: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9444: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9445: if ($crsenv{'internal.courseowner'} eq
9446: $env{'user.name'}.':'.$env{'user.domain'}) {
9447: $refused = '';
9448: }
9449: }
9450: }
9451: }
9452: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9453: if ($role eq 'st') {
9454: $refused = '';
9455: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9456: $refused = '';
9457: }
9458: } elsif ($context eq 'requestcourses') {
9459: my @possroles = ('st','ta','ep','in','cc','co');
9460: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9461: my $wrongcc;
9462: if ($cnum =~ /^$match_community$/) {
9463: $wrongcc = 1 if ($role eq 'cc');
9464: } else {
9465: $wrongcc = 1 if ($role eq 'co');
9466: }
9467: unless ($wrongcc) {
9468: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9469: if ($crsenv{'internal.courseowner'} eq
9470: $env{'user.name'}.':'.$env{'user.domain'}) {
9471: $refused = '';
9472: }
9473: }
9474: }
9475: } elsif ($context eq 'requestauthor') {
9476: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9477: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9478: if ($env{'environment.requestauthor'} eq 'automatic') {
9479: $refused = '';
9480: } else {
9481: my %domdefaults = &get_domain_defaults($udom);
9482: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9483: my $checkbystatus;
9484: if ($env{'user.adv'}) {
9485: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9486: if ($disposition eq 'automatic') {
9487: $refused = '';
9488: } elsif ($disposition eq '') {
9489: $checkbystatus = 1;
9490: }
9491: } else {
9492: $checkbystatus = 1;
9493: }
9494: if ($checkbystatus) {
9495: if ($env{'environment.inststatus'}) {
9496: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9497: foreach my $type (@inststatuses) {
9498: if (($type ne '') &&
9499: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9500: $refused = '';
9501: }
9502: }
9503: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9504: $refused = '';
9505: }
9506: }
9507: }
9508: }
9509: }
9510: }
9511: if ($refused) {
9512: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9513: ' '.$role.' '.$end.' '.$start.' by '.
9514: $env{'user.name'}.' at '.$env{'user.domain'});
9515: return 'refused';
9516: }
9517: }
9518: } elsif ($role eq 'au') {
9519: if ($url ne '/'.$udom.'/') {
9520: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9521: ' to assign author role for '.$uname.':'.$udom.
9522: ' in domain: '.$url.' refused (wrong domain).');
9523: return 'refused';
9524: }
9525: }
9526: $mrole=$role;
9527: }
9528: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9529: "$udom:$uname:$url".'_'."$mrole=$role";
9530: if ($end) { $command.='_'.$end; }
9531: if ($start) {
9532: if ($end) {
9533: $command.='_'.$start;
9534: } else {
9535: $command.='_0_'.$start;
9536: }
9537: }
9538: my $origstart = $start;
9539: my $origend = $end;
9540: my $delflag;
9541: # actually delete
9542: if ($deleteflag) {
9543: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9544: # modify command to delete the role
9545: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9546: "$udom:$uname:$url".'_'."$mrole";
9547: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9548: # set start and finish to negative values for userrolelog
9549: $start=-1;
9550: $end=-1;
9551: $delflag = 1;
9552: }
9553: }
9554: # send command
9555: my $answer=&reply($command,&homeserver($uname,$udom));
9556: # log new user role if status is ok
9557: if ($answer eq 'ok') {
9558: &userrolelog($role,$uname,$udom,$url,$start,$end);
9559: if (($role eq 'cc') || ($role eq 'in') ||
9560: ($role eq 'ep') || ($role eq 'ad') ||
9561: ($role eq 'ta') || ($role eq 'st') ||
9562: ($role=~/^cr/) || ($role eq 'gr') ||
9563: ($role eq 'co')) {
9564: # for course roles, perform group memberships changes triggered by role change.
9565: unless ($role =~ /^gr/) {
9566: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9567: $origstart,$selfenroll,$context);
9568: }
9569: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9570: $selfenroll,$context);
9571: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9572: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9573: ($role eq 'da')) {
9574: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9575: $context);
9576: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9577: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9578: $context);
9579: }
9580: if ($role eq 'cc') {
9581: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9582: }
9583: }
9584: return $answer;
9585: }
9586:
9587: sub autoupdate_coowners {
9588: my ($url,$end,$start,$uname,$udom) = @_;
9589: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9590: if (($cdom ne '') && ($cnum ne '')) {
9591: my $now = time;
9592: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9593: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9594: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9595: my $instcode = $coursehash{'internal.coursecode'};
9596: if ($instcode ne '') {
9597: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9598: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9599: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9600: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9601: if ($result eq 'valid') {
9602: if ($coursehash{'internal.co-owners'}) {
9603: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9604: push(@newcoowners,$coowner);
9605: }
9606: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9607: push(@newcoowners,$uname.':'.$udom);
9608: }
9609: @newcoowners = sort(@newcoowners);
9610: } else {
9611: push(@newcoowners,$uname.':'.$udom);
9612: }
9613: } else {
9614: if ($coursehash{'internal.co-owners'}) {
9615: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9616: unless ($coowner eq $uname.':'.$udom) {
9617: push(@newcoowners,$coowner);
9618: }
9619: }
9620: unless (@newcoowners > 0) {
9621: $delcoowners = 1;
9622: $coowners = '';
9623: }
9624: }
9625: }
9626: if (@newcoowners || $delcoowners) {
9627: &store_coowners($cdom,$cnum,$coursehash{'home'},
9628: $delcoowners,@newcoowners);
9629: }
9630: }
9631: }
9632: }
9633: }
9634: }
9635: }
9636:
9637: sub store_coowners {
9638: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9639: my $cid = $cdom.'_'.$cnum;
9640: my ($coowners,$delresult,$putresult);
9641: if (@newcoowners) {
9642: $coowners = join(',',@newcoowners);
9643: my %coownershash = (
9644: 'internal.co-owners' => $coowners,
9645: );
9646: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9647: if ($putresult eq 'ok') {
9648: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9649: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9650: }
9651: }
9652: }
9653: if ($delcoowners) {
9654: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9655: if ($delresult eq 'ok') {
9656: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9657: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9658: }
9659: }
9660: }
9661: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9662: my %crsinfo =
9663: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9664: if (ref($crsinfo{$cid}) eq 'HASH') {
9665: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9666: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9667: }
9668: }
9669: }
9670:
9671: # -------------------------------------------------- Modify user authentication
9672: # Overrides without validation
9673:
9674: sub modifyuserauth {
9675: my ($udom,$uname,$umode,$upass)=@_;
9676: my $uhome=&homeserver($uname,$udom);
9677: unless (&allowed('mau',$udom)) { return 'refused'; }
9678: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9679: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9680: ' in domain '.$env{'request.role.domain'});
9681: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9682: &escape($upass),$uhome);
9683: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9684: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9685: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9686: &log($udom,,$uname,$uhome,
9687: 'Authentication changed by '.$env{'user.domain'}.', '.
9688: $env{'user.name'}.', '.$umode.
9689: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9690: unless ($reply eq 'ok') {
9691: &logthis('Authentication mode error: '.$reply);
9692: return 'error: '.$reply;
9693: }
9694: return 'ok';
9695: }
9696:
9697: # --------------------------------------------------------------- Modify a user
9698:
9699: sub modifyuser {
9700: my ($udom, $uname, $uid,
9701: $umode, $upass, $first,
9702: $middle, $last, $gene,
9703: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9704: $udom= &LONCAPA::clean_domain($udom);
9705: $uname=&LONCAPA::clean_username($uname);
9706: my $showcandelete = 'none';
9707: if (ref($candelete) eq 'ARRAY') {
9708: if (@{$candelete} > 0) {
9709: $showcandelete = join(', ',@{$candelete});
9710: }
9711: }
9712: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9713: $umode.', '.$first.', '.$middle.', '.
9714: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9715: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9716: ' desiredhome not specified').
9717: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9718: ' in domain '.$env{'request.role.domain'});
9719: my $uhome=&homeserver($uname,$udom,'true');
9720: my $newuser;
9721: if ($uhome eq 'no_host') {
9722: $newuser = 1;
9723: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9724: ($umode eq 'lti')) {
9725: return 'error: more information needed to create new user';
9726: }
9727: }
9728: # ----------------------------------------------------------------- Create User
9729: if (($uhome eq 'no_host') &&
9730: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9731: my $unhome='';
9732: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9733: $unhome = $desiredhome;
9734: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9735: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9736: } else { # load balancing routine for determining $unhome
9737: my $loadm=10000000;
9738: my %servers = &get_servers($udom,'library');
9739: foreach my $tryserver (keys(%servers)) {
9740: my $answer=reply('load',$tryserver);
9741: if (($answer=~/\d+/) && ($answer<$loadm)) {
9742: $loadm=$answer;
9743: $unhome=$tryserver;
9744: }
9745: }
9746: }
9747: if (($unhome eq '') || ($unhome eq 'no_host')) {
9748: return 'error: unable to find a home server for '.$uname.
9749: ' in domain '.$udom;
9750: }
9751: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9752: &escape($upass),$unhome);
9753: unless ($reply eq 'ok') {
9754: return 'error: '.$reply;
9755: }
9756: $uhome=&homeserver($uname,$udom,'true');
9757: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9758: return 'error: unable verify users home machine.';
9759: }
9760: } # End of creation of new user
9761: # ---------------------------------------------------------------------- Add ID
9762: if ($uid) {
9763: $uid=~tr/A-Z/a-z/;
9764: my %uidhash=&idrget($udom,$uname);
9765: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9766: && (!$forceid)) {
9767: unless ($uid eq $uidhash{$uname}) {
9768: return 'error: user id "'.$uid.'" does not match '.
9769: 'current user id "'.$uidhash{$uname}.'".';
9770: }
9771: } else {
9772: &idput($udom,{$uname => $uid},$uhome,'ids');
9773: }
9774: }
9775: # -------------------------------------------------------------- Add names, etc
9776: my @tmp=&get('environment',
9777: ['firstname','middlename','lastname','generation','id',
9778: 'permanentemail','inststatus'],
9779: $udom,$uname);
9780: my (%names,%oldnames);
9781: if ($tmp[0] =~ m/^error:.*/) {
9782: %names=();
9783: } else {
9784: %names = @tmp;
9785: %oldnames = %names;
9786: }
9787: #
9788: # If name, email and/or uid are blank (e.g., because an uploaded file
9789: # of users did not contain them), do not overwrite existing values
9790: # unless field is in $candelete array ref.
9791: #
9792:
9793: my @fields = ('firstname','middlename','lastname','generation',
9794: 'permanentemail','id');
9795: my %newvalues;
9796: if (ref($candelete) eq 'ARRAY') {
9797: foreach my $field (@fields) {
9798: if (grep(/^\Q$field\E$/,@{$candelete})) {
9799: if ($field eq 'firstname') {
9800: $names{$field} = $first;
9801: } elsif ($field eq 'middlename') {
9802: $names{$field} = $middle;
9803: } elsif ($field eq 'lastname') {
9804: $names{$field} = $last;
9805: } elsif ($field eq 'generation') {
9806: $names{$field} = $gene;
9807: } elsif ($field eq 'permanentemail') {
9808: $names{$field} = $email;
9809: } elsif ($field eq 'id') {
9810: $names{$field} = $uid;
9811: }
9812: }
9813: }
9814: }
9815: if ($first) { $names{'firstname'} = $first; }
9816: if (defined($middle)) { $names{'middlename'} = $middle; }
9817: if ($last) { $names{'lastname'} = $last; }
9818: if (defined($gene)) { $names{'generation'} = $gene; }
9819: if ($email) {
9820: $email=~s/[^\w\@\.\-\,]//gs;
9821: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9822: }
9823: if ($uid) { $names{'id'} = $uid; }
9824: if (defined($inststatus)) {
9825: $names{'inststatus'} = '';
9826: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9827: if (ref($usertypes) eq 'HASH') {
9828: my @okstatuses;
9829: foreach my $item (split(/:/,$inststatus)) {
9830: if (defined($usertypes->{$item})) {
9831: push(@okstatuses,$item);
9832: }
9833: }
9834: if (@okstatuses) {
9835: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9836: }
9837: }
9838: }
9839: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9840: $umode.', '.$first.', '.$middle.', '.
9841: $last.', '.$gene.', '.$email.', '.$inststatus;
9842: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9843: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9844: } else {
9845: $logmsg .= ' during self creation';
9846: }
9847: my $changed;
9848: if ($newuser) {
9849: $changed = 1;
9850: } else {
9851: foreach my $field (@fields) {
9852: if ($names{$field} ne $oldnames{$field}) {
9853: $changed = 1;
9854: last;
9855: }
9856: }
9857: }
9858: unless ($changed) {
9859: $logmsg = 'No changes in user information needed for: '.$logmsg;
9860: &logthis($logmsg);
9861: return 'ok';
9862: }
9863: my $reply = &put('environment', \%names, $udom,$uname);
9864: if ($reply ne 'ok') {
9865: return 'error: '.$reply;
9866: }
9867: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9868: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9869: }
9870: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9871: &devalidate_cache_new('namescache',$uname.':'.$udom);
9872: $logmsg = 'Success modifying user '.$logmsg;
9873: &logthis($logmsg);
9874: return 'ok';
9875: }
9876:
9877: # -------------------------------------------------------------- Modify student
9878:
9879: sub modifystudent {
9880: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9881: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9882: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9883: if (!$cid) {
9884: unless ($cid=$env{'request.course.id'}) {
9885: return 'not_in_class';
9886: }
9887: }
9888: # --------------------------------------------------------------- Make the user
9889: my $reply=&modifyuser
9890: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9891: $desiredhome,$email,$inststatus);
9892: unless ($reply eq 'ok') { return $reply; }
9893: # This will cause &modify_student_enrollment to get the uid from the
9894: # student's environment
9895: $uid = undef if (!$forceid);
9896: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9897: $gene,$usec,$end,$start,$type,$locktype,
9898: $cid,$selfenroll,$context,$credits,$instsec);
9899: return $reply;
9900: }
9901:
9902: sub modify_student_enrollment {
9903: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9904: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9905: my ($cdom,$cnum,$chome);
9906: if (!$cid) {
9907: unless ($cid=$env{'request.course.id'}) {
9908: return 'not_in_class';
9909: }
9910: $cdom=$env{'course.'.$cid.'.domain'};
9911: $cnum=$env{'course.'.$cid.'.num'};
9912: } else {
9913: ($cdom,$cnum)=split(/_/,$cid);
9914: }
9915: $chome=$env{'course.'.$cid.'.home'};
9916: if (!$chome) {
9917: $chome=&homeserver($cnum,$cdom);
9918: }
9919: if (!$chome) { return 'unknown_course'; }
9920: # Make sure the user exists
9921: my $uhome=&homeserver($uname,$udom);
9922: if (($uhome eq '') || ($uhome eq 'no_host')) {
9923: return 'error: no such user';
9924: }
9925: # Get student data if we were not given enough information
9926: if (!defined($first) || $first eq '' ||
9927: !defined($last) || $last eq '' ||
9928: !defined($uid) || $uid eq '' ||
9929: !defined($middle) || $middle eq '' ||
9930: !defined($gene) || $gene eq '') {
9931: # They did not supply us with enough data to enroll the student, so
9932: # we need to pick up more information.
9933: my %tmp = &get('environment',
9934: ['firstname','middlename','lastname', 'generation','id']
9935: ,$udom,$uname);
9936:
9937: #foreach my $key (keys(%tmp)) {
9938: # &logthis("key $key = ".$tmp{$key});
9939: #}
9940: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9941: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9942: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9943: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9944: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9945: }
9946: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9947: my $user = "$uname:$udom";
9948: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9949: my $reply=cput('classlist',
9950: {$user =>
9951: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9952: $cdom,$cnum);
9953: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9954: &devalidate_getsection_cache($udom,$uname,$cid);
9955: } else {
9956: return 'error: '.$reply;
9957: }
9958: # Add student role to user
9959: my $uurl='/'.$cid;
9960: $uurl=~s/\_/\//g;
9961: if ($usec) {
9962: $uurl.='/'.$usec;
9963: }
9964: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9965: $selfenroll,$context);
9966: if ($result ne 'ok') {
9967: if ($old_entry{$user} ne '') {
9968: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9969: } else {
9970: $reply = &del('classlist',[$user],$cdom,$cnum);
9971: }
9972: }
9973: return $result;
9974: }
9975:
9976: sub format_name {
9977: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9978: my $name;
9979: if ($first ne 'lastname') {
9980: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9981: } else {
9982: if ($lastname=~/\S/) {
9983: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9984: $name=~s/\s+,/,/;
9985: } else {
9986: $name.= $firstname.' '.$middlename.' '.$generation;
9987: }
9988: }
9989: $name=~s/^\s+//;
9990: $name=~s/\s+$//;
9991: $name=~s/\s+/ /g;
9992: return $name;
9993: }
9994:
9995: # ------------------------------------------------- Write to course preferences
9996:
9997: sub writecoursepref {
9998: my ($courseid,%prefs)=@_;
9999: $courseid=~s/^\///;
10000: $courseid=~s/\_/\//g;
10001: my ($cdomain,$cnum)=split(/\//,$courseid);
10002: my $chome=homeserver($cnum,$cdomain);
10003: if (($chome eq '') || ($chome eq 'no_host')) {
10004: return 'error: no such course';
10005: }
10006: my $cstring='';
10007: foreach my $pref (keys(%prefs)) {
10008: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10009: }
10010: $cstring=~s/\&$//;
10011: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10012: }
10013:
10014: # ---------------------------------------------------------- Make/modify course
10015:
10016: sub createcourse {
10017: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10018: $course_owner,$crstype,$cnum,$context,$category)=@_;
10019: $url=&declutter($url);
10020: my $cid='';
10021: if ($context eq 'requestcourses') {
10022: my $can_create = 0;
10023: my ($ownername,$ownerdom) = split(':',$course_owner);
10024: if ($udom eq $ownerdom) {
10025: if (&usertools_access($ownername,$ownerdom,$category,undef,
10026: $context)) {
10027: $can_create = 1;
10028: }
10029: } else {
10030: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10031: $category);
10032: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10033: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10034: if (@curr > 0) {
10035: my @options = qw(approval validate autolimit);
10036: my $optregex = join('|',@options);
10037: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10038: $can_create = 1;
10039: }
10040: }
10041: }
10042: }
10043: if ($can_create) {
10044: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10045: unless (&allowed('ccc',$udom)) {
10046: return 'refused';
10047: }
10048: }
10049: } else {
10050: return 'refused';
10051: }
10052: } elsif (!&allowed('ccc',$udom)) {
10053: return 'refused';
10054: }
10055: # --------------------------------------------------------------- Get Unique ID
10056: my $uname;
10057: if ($cnum =~ /^$match_courseid$/) {
10058: my $chome=&homeserver($cnum,$udom,'true');
10059: if (($chome eq '') || ($chome eq 'no_host')) {
10060: $uname = $cnum;
10061: } else {
10062: $uname = &generate_coursenum($udom,$crstype);
10063: }
10064: } else {
10065: $uname = &generate_coursenum($udom,$crstype);
10066: }
10067: return $uname if ($uname =~ /^error/);
10068: # -------------------------------------------------- Check supplied server name
10069: if (!defined($course_server)) {
10070: if (defined(&domain($udom,'primary'))) {
10071: $course_server = &domain($udom,'primary');
10072: } else {
10073: $course_server = $env{'user.home'};
10074: }
10075: }
10076: my %host_servers =
10077: &Apache::lonnet::get_servers($udom,'library');
10078: unless ($host_servers{$course_server}) {
10079: return 'error: invalid home server for course: '.$course_server;
10080: }
10081: # ------------------------------------------------------------- Make the course
10082: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10083: $course_server);
10084: unless ($reply eq 'ok') { return 'error: '.$reply; }
10085: my $uhome=&homeserver($uname,$udom,'true');
10086: if (($uhome eq '') || ($uhome eq 'no_host')) {
10087: return 'error: no such course';
10088: }
10089: # ----------------------------------------------------------------- Course made
10090: # log existence
10091: my $now = time;
10092: my $newcourse = {
10093: $udom.'_'.$uname => {
10094: description => $description,
10095: inst_code => $inst_code,
10096: owner => $course_owner,
10097: type => $crstype,
10098: creator => $env{'user.name'}.':'.
10099: $env{'user.domain'},
10100: created => $now,
10101: context => $context,
10102: },
10103: };
10104: &courseidput($udom,$newcourse,$uhome,'notime');
10105: # set toplevel url
10106: my $topurl=$url;
10107: unless ($nonstandard) {
10108: # ------------------------------------------ For standard courses, make top url
10109: my $mapurl=&clutter($url);
10110: if ($mapurl eq '/res/') { $mapurl=''; }
10111: $env{'form.initmap'}=(<<ENDINITMAP);
10112: <map>
10113: <resource id="1" type="start"></resource>
10114: <resource id="2" src="$mapurl"></resource>
10115: <resource id="3" type="finish"></resource>
10116: <link index="1" from="1" to="2"></link>
10117: <link index="2" from="2" to="3"></link>
10118: </map>
10119: ENDINITMAP
10120: $topurl=&declutter(
10121: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10122: );
10123: }
10124: # ----------------------------------------------------------- Write preferences
10125: &writecoursepref($udom.'_'.$uname,
10126: ('description' => $description,
10127: 'url' => $topurl,
10128: 'internal.creator' => $env{'user.name'}.':'.
10129: $env{'user.domain'},
10130: 'internal.created' => $now,
10131: 'internal.creationcontext' => $context)
10132: );
10133: return '/'.$udom.'/'.$uname;
10134: }
10135:
10136: # ------------------------------------------------------------------- Create ID
10137: sub generate_coursenum {
10138: my ($udom,$crstype) = @_;
10139: my $domdesc = &domain($udom);
10140: return 'error: invalid domain' if ($domdesc eq '');
10141: my $first;
10142: if ($crstype eq 'Community') {
10143: $first = '0';
10144: } else {
10145: $first = int(1+rand(9));
10146: }
10147: my $uname=$first.
10148: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10149: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10150: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10151: # ----------------------------------------------- Make sure that does not exist
10152: my $uhome=&homeserver($uname,$udom,'true');
10153: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10154: if ($crstype eq 'Community') {
10155: $first = '0';
10156: } else {
10157: $first = int(1+rand(9));
10158: }
10159: $uname=$first.
10160: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10161: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10162: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10163: $uhome=&homeserver($uname,$udom,'true');
10164: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10165: return 'error: unable to generate unique course-ID';
10166: }
10167: }
10168: return $uname;
10169: }
10170:
10171: sub is_course {
10172: my ($cdom, $cnum) = scalar(@_) == 1 ?
10173: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10174:
10175: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10176: my $uhome=&homeserver($cnum,$cdom);
10177: my $iscourse;
10178: if (grep { $_ eq $uhome } current_machine_ids()) {
10179: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10180: } else {
10181: my $hashid = $cdom.':'.$cnum;
10182: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10183: unless (defined($cached)) {
10184: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10185: $cnum,undef,undef,'.');
10186: $iscourse = 0;
10187: if (exists($courses{$cdom.'_'.$cnum})) {
10188: $iscourse = 1;
10189: }
10190: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10191: }
10192: }
10193: return unless ($iscourse);
10194: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10195: }
10196:
10197: sub store_userdata {
10198: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10199: my $result;
10200: if ($datakey ne '') {
10201: if (ref($storehash) eq 'HASH') {
10202: if ($udom eq '' || $uname eq '') {
10203: $udom = $env{'user.domain'};
10204: $uname = $env{'user.name'};
10205: }
10206: my $uhome=&homeserver($uname,$udom);
10207: if (($uhome eq '') || ($uhome eq 'no_host')) {
10208: $result = 'error: no_host';
10209: } else {
10210: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10211: $storehash->{'host'} = $perlvar{'lonHostID'};
10212:
10213: my $namevalue='';
10214: foreach my $key (keys(%{$storehash})) {
10215: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10216: }
10217: $namevalue=~s/\&$//;
10218: unless ($namespace eq 'courserequests') {
10219: $datakey = &escape($datakey);
10220: }
10221: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10222: $namevalue,$uhome);
10223: }
10224: } else {
10225: $result = 'error: data to store was not a hash reference';
10226: }
10227: } else {
10228: $result= 'error: invalid requestkey';
10229: }
10230: return $result;
10231: }
10232:
10233: # ---------------------------------------------------------- Assign Custom Role
10234:
10235: sub assigncustomrole {
10236: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10237: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10238: $end,$start,$deleteflag,$selfenroll,$context);
10239: }
10240:
10241: # ----------------------------------------------------------------- Revoke Role
10242:
10243: sub revokerole {
10244: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10245: my $now=time;
10246: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10247: }
10248:
10249: # ---------------------------------------------------------- Revoke Custom Role
10250:
10251: sub revokecustomrole {
10252: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10253: my $now=time;
10254: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10255: $deleteflag,$selfenroll,$context);
10256: }
10257:
10258: # ------------------------------------------------------------ Disk usage
10259: sub diskusage {
10260: my ($udom,$uname,$directorypath,$getpropath)=@_;
10261: $directorypath =~ s/\/$//;
10262: my $listing=&reply('du2:'.&escape($directorypath).':'
10263: .&escape($getpropath).':'.&escape($uname).':'
10264: .&escape($udom),homeserver($uname,$udom));
10265: if ($listing eq 'unknown_cmd') {
10266: if ($getpropath) {
10267: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10268: }
10269: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10270: }
10271: return $listing;
10272: }
10273:
10274: sub is_locked {
10275: my ($file_name, $domain, $user, $which) = @_;
10276: my @check;
10277: my $is_locked;
10278: push (@check,$file_name);
10279: my %locked = &get('file_permissions',\@check,
10280: $env{'user.domain'},$env{'user.name'});
10281: my ($tmp)=keys(%locked);
10282: if ($tmp=~/^error:/) { undef(%locked); }
10283:
10284: if (ref($locked{$file_name}) eq 'ARRAY') {
10285: $is_locked = 'false';
10286: foreach my $entry (@{$locked{$file_name}}) {
10287: if (ref($entry) eq 'ARRAY') {
10288: $is_locked = 'true';
10289: if (ref($which) eq 'ARRAY') {
10290: push(@{$which},$entry);
10291: } else {
10292: last;
10293: }
10294: }
10295: }
10296: } else {
10297: $is_locked = 'false';
10298: }
10299: return $is_locked;
10300: }
10301:
10302: sub declutter_portfile {
10303: my ($file) = @_;
10304: $file =~ s{^(/portfolio/|portfolio/)}{/};
10305: return $file;
10306: }
10307:
10308: # ------------------------------------------------------------- Mark as Read Only
10309:
10310: sub mark_as_readonly {
10311: my ($domain,$user,$files,$what) = @_;
10312: my %current_permissions = &dump('file_permissions',$domain,$user);
10313: my ($tmp)=keys(%current_permissions);
10314: if ($tmp=~/^error:/) { undef(%current_permissions); }
10315: foreach my $file (@{$files}) {
10316: $file = &declutter_portfile($file);
10317: push(@{$current_permissions{$file}},$what);
10318: }
10319: &put('file_permissions',\%current_permissions,$domain,$user);
10320: return;
10321: }
10322:
10323: # ------------------------------------------------------------Save Selected Files
10324:
10325: sub save_selected_files {
10326: my ($user, $path, @files) = @_;
10327: my $filename = $user."savedfiles";
10328: my @other_files = &files_not_in_path($user, $path);
10329: open (OUT,'>',LONCAPA::tempdir().$filename);
10330: foreach my $file (@files) {
10331: print (OUT $env{'form.currentpath'}.$file."\n");
10332: }
10333: foreach my $file (@other_files) {
10334: print (OUT $file."\n");
10335: }
10336: close (OUT);
10337: return 'ok';
10338: }
10339:
10340: sub clear_selected_files {
10341: my ($user) = @_;
10342: my $filename = $user."savedfiles";
10343: open (OUT,'>',LONCAPA::tempdir().$filename);
10344: print (OUT undef);
10345: close (OUT);
10346: return ("ok");
10347: }
10348:
10349: sub files_in_path {
10350: my ($user, $path) = @_;
10351: my $filename = $user."savedfiles";
10352: my %return_files;
10353: open (IN,'<',LONCAPA::tempdir().$filename);
10354: while (my $line_in = <IN>) {
10355: chomp ($line_in);
10356: my @paths_and_file = split (m!/!, $line_in);
10357: my $file_part = pop (@paths_and_file);
10358: my $path_part = join ('/', @paths_and_file);
10359: $path_part.='/';
10360: my $path_and_file = $path_part.$file_part;
10361: if ($path_part eq $path) {
10362: $return_files{$file_part}= 'selected';
10363: }
10364: }
10365: close (IN);
10366: return (\%return_files);
10367: }
10368:
10369: # called in portfolio select mode, to show files selected NOT in current directory
10370: sub files_not_in_path {
10371: my ($user, $path) = @_;
10372: my $filename = $user."savedfiles";
10373: my @return_files;
10374: my $path_part;
10375: open(IN, '<',LONCAPA::tempdir().$filename);
10376: while (my $line = <IN>) {
10377: #ok, I know it's clunky, but I want it to work
10378: my @paths_and_file = split(m|/|, $line);
10379: my $file_part = pop(@paths_and_file);
10380: chomp($file_part);
10381: my $path_part = join('/', @paths_and_file);
10382: $path_part .= '/';
10383: my $path_and_file = $path_part.$file_part;
10384: if ($path_part ne $path) {
10385: push(@return_files, ($path_and_file));
10386: }
10387: }
10388: close(OUT);
10389: return (@return_files);
10390: }
10391:
10392: #------------------------------Submitted/Handedback Portfolio Files Versioning
10393:
10394: sub portfiles_versioning {
10395: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10396: my $portfolio_root = '/userfiles/portfolio';
10397: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10398: foreach my $file (@{$portfiles}) {
10399: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10400: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10401: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10402: my $getpropath = 1;
10403: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10404: $stu_name,$getpropath);
10405: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10406: my $new_answer =
10407: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10408: if ($new_answer ne 'problem getting file') {
10409: push(@{$versioned_portfiles}, $directory.$new_answer);
10410: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10411: [$symb,$env{'request.course.id'},'graded']);
10412: }
10413: }
10414: }
10415:
10416: sub get_next_version {
10417: my ($answer_name, $answer_ext, $dir_list) = @_;
10418: my $version;
10419: if (ref($dir_list) eq 'ARRAY') {
10420: foreach my $row (@{$dir_list}) {
10421: my ($file) = split(/\&/,$row,2);
10422: my ($file_name,$file_version,$file_ext) =
10423: &file_name_version_ext($file);
10424: if (($file_name eq $answer_name) &&
10425: ($file_ext eq $answer_ext)) {
10426: # gets here if filename and extension match,
10427: # regardless of version
10428: if ($file_version ne '') {
10429: # a versioned file is found so save it for later
10430: if ($file_version > $version) {
10431: $version = $file_version;
10432: }
10433: }
10434: }
10435: }
10436: }
10437: $version ++;
10438: return($version);
10439: }
10440:
10441: sub version_selected_portfile {
10442: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10443: my ($answer_name,$answer_ver,$answer_ext) =
10444: &file_name_version_ext($file_name);
10445: my $new_answer;
10446: $env{'form.copy'} =
10447: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10448: if($env{'form.copy'} eq '-1') {
10449: $new_answer = 'problem getting file';
10450: } else {
10451: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10452: my $copy_result =
10453: &finishuserfileupload($stu_name,$domain,'copy',
10454: '/portfolio'.$directory.$new_answer);
10455: }
10456: undef($env{'form.copy'});
10457: return ($new_answer);
10458: }
10459:
10460: sub file_name_version_ext {
10461: my ($file)=@_;
10462: my @file_parts = split(/\./, $file);
10463: my ($name,$version,$ext);
10464: if (@file_parts > 1) {
10465: $ext=pop(@file_parts);
10466: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10467: $version=pop(@file_parts);
10468: }
10469: $name=join('.',@file_parts);
10470: } else {
10471: $name=join('.',@file_parts);
10472: }
10473: return($name,$version,$ext);
10474: }
10475:
10476: #----------------------------------------------Get portfolio file permissions
10477:
10478: sub get_portfile_permissions {
10479: my ($domain,$user) = @_;
10480: my %current_permissions = &dump('file_permissions',$domain,$user);
10481: my ($tmp)=keys(%current_permissions);
10482: if ($tmp=~/^error:/) { undef(%current_permissions); }
10483: return \%current_permissions;
10484: }
10485:
10486: #---------------------------------------------Get portfolio file access controls
10487:
10488: sub get_access_controls {
10489: my ($current_permissions,$group,$file) = @_;
10490: my %access;
10491: my $real_file = $file;
10492: $file =~ s/\.meta$//;
10493: if (defined($file)) {
10494: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10495: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10496: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10497: }
10498: }
10499: } else {
10500: foreach my $key (keys(%{$current_permissions})) {
10501: if ($key =~ /\0accesscontrol$/) {
10502: if (defined($group)) {
10503: if ($key !~ m-^\Q$group\E/-) {
10504: next;
10505: }
10506: }
10507: my ($fullpath) = split(/\0/,$key);
10508: if (ref($$current_permissions{$key}) eq 'HASH') {
10509: foreach my $control (keys(%{$$current_permissions{$key}})) {
10510: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10511: }
10512: }
10513: }
10514: }
10515: }
10516: return %access;
10517: }
10518:
10519: sub modify_access_controls {
10520: my ($file_name,$changes,$domain,$user)=@_;
10521: my ($outcome,$deloutcome);
10522: my %store_permissions;
10523: my %new_values;
10524: my %new_control;
10525: my %translation;
10526: my @deletions = ();
10527: my $now = time;
10528: if (exists($$changes{'activate'})) {
10529: if (ref($$changes{'activate'}) eq 'HASH') {
10530: my @newitems = sort(keys(%{$$changes{'activate'}}));
10531: my $numnew = scalar(@newitems);
10532: for (my $i=0; $i<$numnew; $i++) {
10533: my $newkey = $newitems[$i];
10534: my $newid = &Apache::loncommon::get_cgi_id();
10535: if ($newkey =~ /^\d+:/) {
10536: $newkey =~ s/^(\d+)/$newid/;
10537: $translation{$1} = $newid;
10538: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10539: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10540: $translation{$1} = $newid;
10541: }
10542: $new_values{$file_name."\0".$newkey} =
10543: $$changes{'activate'}{$newitems[$i]};
10544: $new_control{$newkey} = $now;
10545: }
10546: }
10547: }
10548: my %todelete;
10549: my %changed_items;
10550: foreach my $action ('delete','update') {
10551: if (exists($$changes{$action})) {
10552: if (ref($$changes{$action}) eq 'HASH') {
10553: foreach my $key (keys(%{$$changes{$action}})) {
10554: my ($itemnum) = ($key =~ /^([^:]+):/);
10555: if ($action eq 'delete') {
10556: $todelete{$itemnum} = 1;
10557: } else {
10558: $changed_items{$itemnum} = $key;
10559: }
10560: }
10561: }
10562: }
10563: }
10564: # get lock on access controls for file.
10565: my $lockhash = {
10566: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10567: ':'.$env{'user.domain'},
10568: };
10569: my $tries = 0;
10570: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10571:
10572: while (($gotlock ne 'ok') && $tries < 10) {
10573: $tries ++;
10574: sleep(0.1);
10575: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10576: }
10577: if ($gotlock eq 'ok') {
10578: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10579: my ($tmp)=keys(%curr_permissions);
10580: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10581: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10582: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10583: if (ref($curr_controls) eq 'HASH') {
10584: foreach my $control_item (keys(%{$curr_controls})) {
10585: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10586: if (defined($todelete{$itemnum})) {
10587: push(@deletions,$file_name."\0".$control_item);
10588: } else {
10589: if (defined($changed_items{$itemnum})) {
10590: $new_control{$changed_items{$itemnum}} = $now;
10591: push(@deletions,$file_name."\0".$control_item);
10592: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10593: } else {
10594: $new_control{$control_item} = $$curr_controls{$control_item};
10595: }
10596: }
10597: }
10598: }
10599: }
10600: my ($group);
10601: if (&is_course($domain,$user)) {
10602: ($group,my $file) = split(/\//,$file_name,2);
10603: }
10604: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10605: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10606: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10607: # remove lock
10608: my @del_lock = ($file_name."\0".'locked_access_records');
10609: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10610: my $sqlresult =
10611: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10612: $group);
10613: } else {
10614: $outcome = "error: could not obtain lockfile\n";
10615: }
10616: return ($outcome,$deloutcome,\%new_values,\%translation);
10617: }
10618:
10619: sub make_public_indefinitely {
10620: my (@requrl) = @_;
10621: return &automated_portfile_access('public',\@requrl);
10622: }
10623:
10624: sub automated_portfile_access {
10625: my ($accesstype,$addsref,$delsref,$info) = @_;
10626: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10627: return 'invalid';
10628: }
10629: my %urls;
10630: if (ref($addsref) eq 'ARRAY') {
10631: foreach my $requrl (@{$addsref}) {
10632: if (&is_portfolio_url($requrl)) {
10633: unless (exists($urls{$requrl})) {
10634: $urls{$requrl} = 'add';
10635: }
10636: }
10637: }
10638: }
10639: if (ref($delsref) eq 'ARRAY') {
10640: foreach my $requrl (@{$delsref}) {
10641: if (&is_portfolio_url($requrl)) {
10642: unless (exists($urls{$requrl})) {
10643: $urls{$requrl} = 'delete';
10644: }
10645: }
10646: }
10647: }
10648: unless (keys(%urls)) {
10649: return 'invalid';
10650: }
10651: my $ip;
10652: if ($accesstype eq 'ip') {
10653: if (ref($info) eq 'HASH') {
10654: if ($info->{'ip'} ne '') {
10655: $ip = $info->{'ip'};
10656: }
10657: }
10658: if ($ip eq '') {
10659: return 'invalid';
10660: }
10661: }
10662: my $errors;
10663: my $now = time;
10664: my %current_perms;
10665: foreach my $requrl (sort(keys(%urls))) {
10666: my $action;
10667: if ($urls{$requrl} eq 'add') {
10668: $action = 'activate';
10669: } else {
10670: $action = 'none';
10671: }
10672: my $aclnum = 0;
10673: my (undef,$udom,$unum,$file_name,$group) =
10674: &parse_portfolio_url($requrl);
10675: unless (exists($current_perms{$unum.':'.$udom})) {
10676: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10677: }
10678: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10679: $group,$file_name);
10680: foreach my $key (keys(%{$access_controls{$file_name}})) {
10681: my ($num,$scope,$end,$start) =
10682: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10683: if ($scope eq $accesstype) {
10684: if (($start <= $now) && ($end == 0)) {
10685: if ($accesstype eq 'ip') {
10686: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10687: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10688: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10689: if ($urls{$requrl} eq 'add') {
10690: $action = 'none';
10691: last;
10692: } else {
10693: $action = 'delete';
10694: $aclnum = $num;
10695: last;
10696: }
10697: }
10698: }
10699: }
10700: } elsif ($accesstype eq 'public') {
10701: if ($urls{$requrl} eq 'add') {
10702: $action = 'none';
10703: last;
10704: } else {
10705: $action = 'delete';
10706: $aclnum = $num;
10707: last;
10708: }
10709: }
10710: } elsif ($accesstype eq 'public') {
10711: $action = 'update';
10712: $aclnum = $num;
10713: last;
10714: }
10715: }
10716: }
10717: if ($action eq 'none') {
10718: next;
10719: } else {
10720: my %changes;
10721: my $newend = 0;
10722: my $newstart = $now;
10723: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10724: $changes{$action}{$newkey} = {
10725: type => $accesstype,
10726: time => {
10727: start => $newstart,
10728: end => $newend,
10729: },
10730: };
10731: if ($accesstype eq 'ip') {
10732: $changes{$action}{$newkey}{'ip'} = [$ip];
10733: }
10734: my ($outcome,$deloutcome,$new_values,$translation) =
10735: &modify_access_controls($file_name,\%changes,$udom,$unum);
10736: unless ($outcome eq 'ok') {
10737: $errors .= $outcome.' ';
10738: }
10739: }
10740: }
10741: if ($errors) {
10742: $errors =~ s/\s$//;
10743: return $errors;
10744: } else {
10745: return 'ok';
10746: }
10747: }
10748:
10749: #------------------------------------------------------Get Marked as Read Only
10750:
10751: sub get_marked_as_readonly {
10752: my ($domain,$user,$what,$group) = @_;
10753: my $current_permissions = &get_portfile_permissions($domain,$user);
10754: my @readonly_files;
10755: my $cmp1=$what;
10756: if (ref($what)) { $cmp1=join('',@{$what}) };
10757: while (my ($file_name,$value) = each(%{$current_permissions})) {
10758: if (defined($group)) {
10759: if ($file_name !~ m-^\Q$group\E/-) {
10760: next;
10761: }
10762: }
10763: if (ref($value) eq "ARRAY"){
10764: foreach my $stored_what (@{$value}) {
10765: my $cmp2=$stored_what;
10766: if (ref($stored_what) eq 'ARRAY') {
10767: $cmp2=join('',@{$stored_what});
10768: }
10769: if ($cmp1 eq $cmp2) {
10770: push(@readonly_files, $file_name);
10771: last;
10772: } elsif (!defined($what)) {
10773: push(@readonly_files, $file_name);
10774: last;
10775: }
10776: }
10777: }
10778: }
10779: return @readonly_files;
10780: }
10781: #-----------------------------------------------------------Get Marked as Read Only Hash
10782:
10783: sub get_marked_as_readonly_hash {
10784: my ($current_permissions,$group,$what) = @_;
10785: my %readonly_files;
10786: while (my ($file_name,$value) = each(%{$current_permissions})) {
10787: if (defined($group)) {
10788: if ($file_name !~ m-^\Q$group\E/-) {
10789: next;
10790: }
10791: }
10792: if (ref($value) eq "ARRAY"){
10793: foreach my $stored_what (@{$value}) {
10794: if (ref($stored_what) eq 'ARRAY') {
10795: foreach my $lock_descriptor(@{$stored_what}) {
10796: if ($lock_descriptor eq 'graded') {
10797: $readonly_files{$file_name} = 'graded';
10798: } elsif ($lock_descriptor eq 'handback') {
10799: $readonly_files{$file_name} = 'handback';
10800: } else {
10801: if (!exists($readonly_files{$file_name})) {
10802: $readonly_files{$file_name} = 'locked';
10803: }
10804: }
10805: }
10806: }
10807: }
10808: }
10809: }
10810: return %readonly_files;
10811: }
10812: # ------------------------------------------------------------ Unmark as Read Only
10813:
10814: sub unmark_as_readonly {
10815: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10816: # for portfolio submissions, $what contains [$symb,$crsid]
10817: my ($domain,$user,$what,$file_name,$group) = @_;
10818: $file_name = &declutter_portfile($file_name);
10819: my $symb_crs = $what;
10820: if (ref($what)) { $symb_crs=join('',@$what); }
10821: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10822: my ($tmp)=keys(%current_permissions);
10823: if ($tmp=~/^error:/) { undef(%current_permissions); }
10824: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10825: foreach my $file (@readonly_files) {
10826: my $clean_file = &declutter_portfile($file);
10827: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10828: my $current_locks = $current_permissions{$file};
10829: my @new_locks;
10830: my @del_keys;
10831: if (ref($current_locks) eq "ARRAY"){
10832: foreach my $locker (@{$current_locks}) {
10833: my $compare=$locker;
10834: if (ref($locker) eq 'ARRAY') {
10835: $compare=join('',@{$locker});
10836: if ($compare ne $symb_crs) {
10837: push(@new_locks, $locker);
10838: }
10839: }
10840: }
10841: if (scalar(@new_locks) > 0) {
10842: $current_permissions{$file} = \@new_locks;
10843: } else {
10844: push(@del_keys, $file);
10845: &del('file_permissions',\@del_keys, $domain, $user);
10846: delete($current_permissions{$file});
10847: }
10848: }
10849: }
10850: &put('file_permissions',\%current_permissions,$domain,$user);
10851: return;
10852: }
10853:
10854: # ------------------------------------------------------------ Directory lister
10855:
10856: sub dirlist {
10857: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10858: $uri=~s/^\///;
10859: $uri=~s/\/$//;
10860: my ($udom, $uname);
10861: if ($getuserdir) {
10862: $udom = $userdomain;
10863: $uname = $username;
10864: } else {
10865: (undef,$udom,$uname)=split(/\//,$uri);
10866: if(defined($userdomain)) {
10867: $udom = $userdomain;
10868: }
10869: if(defined($username)) {
10870: $uname = $username;
10871: }
10872: }
10873: my ($dirRoot,$listing,@listing_results);
10874:
10875: $dirRoot = $perlvar{'lonDocRoot'};
10876: if (defined($getpropath)) {
10877: $dirRoot = &propath($udom,$uname);
10878: $dirRoot =~ s/\/$//;
10879: } elsif (defined($getuserdir)) {
10880: my $subdir=$uname.'__';
10881: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10882: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10883: ."/$udom/$subdir/$uname";
10884: } elsif (defined($alternateRoot)) {
10885: $dirRoot = $alternateRoot;
10886: }
10887:
10888: if($udom) {
10889: if($uname) {
10890: my $uhome = &homeserver($uname,$udom);
10891: if ($uhome eq 'no_host') {
10892: return ([],'no_host');
10893: }
10894: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10895: .$getuserdir.':'.&escape($dirRoot)
10896: .':'.&escape($uname).':'.&escape($udom),$uhome);
10897: if ($listing eq 'unknown_cmd') {
10898: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10899: } else {
10900: @listing_results = map { &unescape($_); } split(/:/,$listing);
10901: }
10902: if ($listing eq 'unknown_cmd') {
10903: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10904: @listing_results = split(/:/,$listing);
10905: } else {
10906: @listing_results = map { &unescape($_); } split(/:/,$listing);
10907: }
10908: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10909: ($listing eq 'rejected') || ($listing eq 'refused') ||
10910: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10911: return ([],$listing);
10912: } else {
10913: return (\@listing_results);
10914: }
10915: } elsif(!$alternateRoot) {
10916: my (%allusers,%listerror);
10917: my %servers = &get_servers($udom,'library');
10918: foreach my $tryserver (keys(%servers)) {
10919: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10920: &escape($udom),$tryserver);
10921: if ($listing eq 'unknown_cmd') {
10922: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10923: $udom, $tryserver);
10924: } else {
10925: @listing_results = map { &unescape($_); } split(/:/,$listing);
10926: }
10927: if ($listing eq 'unknown_cmd') {
10928: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10929: $udom, $tryserver);
10930: @listing_results = split(/:/,$listing);
10931: } else {
10932: @listing_results =
10933: map { &unescape($_); } split(/:/,$listing);
10934: }
10935: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10936: ($listing eq 'rejected') || ($listing eq 'refused') ||
10937: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10938: $listerror{$tryserver} = $listing;
10939: } else {
10940: foreach my $line (@listing_results) {
10941: my ($entry) = split(/&/,$line,2);
10942: $allusers{$entry} = 1;
10943: }
10944: }
10945: }
10946: my @alluserslist=();
10947: foreach my $user (sort(keys(%allusers))) {
10948: push(@alluserslist,$user.'&user');
10949: }
10950:
10951: if (!%listerror) {
10952: # no errors
10953: return (\@alluserslist);
10954: } elsif (scalar(keys(%servers)) == 1) {
10955: # one library server, one error
10956: my ($key) = keys(%listerror);
10957: return (\@alluserslist, $listerror{$key});
10958: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10959: # con_lost indicates that we might miss data from at least one
10960: # library server
10961: return (\@alluserslist, 'con_lost');
10962: } else {
10963: # multiple library servers and no con_lost -> data should be
10964: # complete.
10965: return (\@alluserslist);
10966: }
10967:
10968: } else {
10969: return ([],'missing username');
10970: }
10971: } elsif(!defined($getpropath)) {
10972: my $path = $perlvar{'lonDocRoot'}.'/res/';
10973: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10974: return (\@all_domains);
10975: } else {
10976: return ([],'missing domain');
10977: }
10978: }
10979:
10980: # --------------------------------------------- GetFileTimestamp
10981: # This function utilizes dirlist and returns the date stamp for
10982: # when it was last modified. It will also return an error of -1
10983: # if an error occurs
10984:
10985: sub GetFileTimestamp {
10986: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10987: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10988: $studentName = &LONCAPA::clean_username($studentName);
10989: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10990: undef,$getuserdir);
10991: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10992: return -1;
10993: }
10994: if (ref($fileref) eq 'ARRAY') {
10995: my @stats = split('&',$fileref->[0]);
10996: # @stats contains first the filename, then the stat output
10997: return $stats[10]; # so this is 10 instead of 9.
10998: } else {
10999: return -1;
11000: }
11001: }
11002:
11003: sub stat_file {
11004: my ($uri) = @_;
11005: $uri = &clutter_with_no_wrapper($uri);
11006:
11007: my ($udom,$uname,$file);
11008: if ($uri =~ m-^/(uploaded|editupload)/-) {
11009: ($udom,$uname,$file) =
11010: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11011: $file = 'userfiles/'.$file;
11012: }
11013: if ($uri =~ m-^/res/-) {
11014: ($udom,$uname) =
11015: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11016: $file = $uri;
11017: }
11018:
11019: if (!$udom || !$uname || !$file) {
11020: # unable to handle the uri
11021: return ();
11022: }
11023: my $getpropath;
11024: if ($file =~ /^userfiles\//) {
11025: $getpropath = 1;
11026: }
11027: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11028: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11029: return ();
11030: } else {
11031: if (ref($listref) eq 'ARRAY') {
11032: my @stats = split('&',$listref->[0]);
11033: shift(@stats); #filename is first
11034: return @stats;
11035: }
11036: }
11037: return ();
11038: }
11039:
11040: # --------------------------------------------------------- recursedirs
11041: # Recursive function to traverse either a specific user's Authoring Space
11042: # or corresponding Published Resource Space, and populate the hash ref:
11043: # $dirhashref with URLs of all directories, and if $filehashref hash
11044: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11045: # or .rights files in resource space, and .meta, .save, .log, and .bak
11046: # files in Authoring Space.
11047: #
11048: # Inputs:
11049: #
11050: # $is_home - true if current server is home server for user's space
11051: # $context - either: priv, or res respectively for Authoring or Resource Space.
11052: # $docroot - Document root (i.e., /home/httpd/html
11053: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11054: # $relpath - Current path (relative to top level).
11055: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11056: # $filehashref - reference to hash to populate with URLs of files (Optional)
11057: #
11058: # Returns: nothing
11059: #
11060: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11061: #
11062: # Currently used by interface/londocs.pm to create linked select boxes for
11063: # directory and filename to import a Course "Author" resource into a course, and
11064: # also to create linked select boxes for Authoring Space and Directory to choose
11065: # save location for creation of a new "standard" problem from the Course Editor.
11066: #
11067:
11068: sub recursedirs {
11069: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11070: return unless (ref($dirhashref) eq 'HASH');
11071: my $currpath = $docroot.$toppath;
11072: if ($relpath) {
11073: $currpath .= "/$relpath";
11074: }
11075: my $savefile;
11076: if (ref($filehashref)) {
11077: $savefile = 1;
11078: }
11079: if ($is_home) {
11080: if (opendir(my $dirh,$currpath)) {
11081: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11082: next if ($item eq '');
11083: if (-d "$currpath/$item") {
11084: my $newpath;
11085: if ($relpath) {
11086: $newpath = "$relpath/$item";
11087: } else {
11088: $newpath = $item;
11089: }
11090: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11091: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11092: } elsif ($savefile) {
11093: if ($context eq 'priv') {
11094: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11095: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11096: }
11097: } else {
11098: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11099: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11100: }
11101: }
11102: }
11103: }
11104: closedir($dirh);
11105: }
11106: } else {
11107: my ($dirlistref,$listerror) =
11108: &dirlist($toppath.$relpath);
11109: my @dir_lines;
11110: my $dirptr=16384;
11111: if (ref($dirlistref) eq 'ARRAY') {
11112: foreach my $dir_line (sort
11113: {
11114: my ($afile)=split('&',$a,2);
11115: my ($bfile)=split('&',$b,2);
11116: return (lc($afile) cmp lc($bfile));
11117: } (@{$dirlistref})) {
11118: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11119: split(/\&/,$dir_line,16);
11120: $item =~ s/\s+$//;
11121: next if (($item =~ /^\.\.?$/) || ($obs));
11122: if ($dirptr&$testdir) {
11123: my $newpath;
11124: if ($relpath) {
11125: $newpath = "$relpath/$item";
11126: } else {
11127: $relpath = '/';
11128: $newpath = $item;
11129: }
11130: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11131: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11132: } elsif ($savefile) {
11133: if ($context eq 'priv') {
11134: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11135: $filehashref->{$relpath}{$item} = 1;
11136: }
11137: } else {
11138: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11139: $filehashref->{$relpath}{$item} = 1;
11140: }
11141: }
11142: }
11143: }
11144: }
11145: }
11146: return;
11147: }
11148:
11149: # -------------------------------------------------------- Value of a Condition
11150:
11151: # gets the value of a specific preevaluated condition
11152: # stored in the string $env{user.state.<cid>}
11153: # or looks up a condition reference in the bighash and if if hasn't
11154: # already been evaluated recurses into docondval to get the value of
11155: # the condition, then memoizing it to
11156: # $env{user.state.<cid>.<condition>}
11157: sub directcondval {
11158: my $number=shift;
11159: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11160: &Apache::lonuserstate::evalstate();
11161: }
11162: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11163: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11164: } elsif ($number =~ /^_/) {
11165: my $sub_condition;
11166: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11167: &GDBM_READER(),0640)) {
11168: $sub_condition=$bighash{'conditions'.$number};
11169: untie(%bighash);
11170: }
11171: my $value = &docondval($sub_condition);
11172: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11173: return $value;
11174: }
11175: if ($env{'user.state.'.$env{'request.course.id'}}) {
11176: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11177: } else {
11178: return 2;
11179: }
11180: }
11181:
11182: # get the collection of conditions for this resource
11183: sub condval {
11184: my $condidx=shift;
11185: my $allpathcond='';
11186: foreach my $cond (split(/\|/,$condidx)) {
11187: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11188: $allpathcond.=
11189: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11190: }
11191: }
11192: $allpathcond=~s/\|$//;
11193: return &docondval($allpathcond);
11194: }
11195:
11196: #evaluates an expression of conditions
11197: sub docondval {
11198: my ($allpathcond) = @_;
11199: my $result=0;
11200: if ($env{'request.course.id'}
11201: && defined($allpathcond)) {
11202: my $operand='|';
11203: my @stack;
11204: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11205: if ($chunk eq '(') {
11206: push @stack,($operand,$result);
11207: } elsif ($chunk eq ')') {
11208: my $before=pop @stack;
11209: if (pop @stack eq '&') {
11210: $result=$result>$before?$before:$result;
11211: } else {
11212: $result=$result>$before?$result:$before;
11213: }
11214: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11215: $operand=$chunk;
11216: } else {
11217: my $new=directcondval($chunk);
11218: if ($operand eq '&') {
11219: $result=$result>$new?$new:$result;
11220: } else {
11221: $result=$result>$new?$result:$new;
11222: }
11223: }
11224: }
11225: }
11226: return $result;
11227: }
11228:
11229: # ---------------------------------------------------- Devalidate courseresdata
11230:
11231: sub devalidatecourseresdata {
11232: my ($coursenum,$coursedomain)=@_;
11233: my $hashid=$coursenum.':'.$coursedomain;
11234: &devalidate_cache_new('courseres',$hashid);
11235: }
11236:
11237:
11238: # --------------------------------------------------- Course Resourcedata Query
11239: #
11240: # Parameters:
11241: # $coursenum - Number of the course.
11242: # $coursedomain - Domain at which the course was created.
11243: # Returns:
11244: # A hash of the course parameters along (I think) with timestamps
11245: # and version info.
11246:
11247: sub get_courseresdata {
11248: my ($coursenum,$coursedomain)=@_;
11249: my $coursehom=&homeserver($coursenum,$coursedomain);
11250: my $hashid=$coursenum.':'.$coursedomain;
11251: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11252: my %dumpreply;
11253: unless (defined($cached)) {
11254: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11255: $result=\%dumpreply;
11256: my ($tmp) = keys(%dumpreply);
11257: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11258: &do_cache_new('courseres',$hashid,$result,600);
11259: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11260: return $tmp;
11261: } elsif ($tmp =~ /^(error)/) {
11262: $result=undef;
11263: &do_cache_new('courseres',$hashid,$result,600);
11264: }
11265: }
11266: return $result;
11267: }
11268:
11269: sub devalidateuserresdata {
11270: my ($uname,$udom)=@_;
11271: my $hashid="$udom:$uname";
11272: &devalidate_cache_new('userres',$hashid);
11273: }
11274:
11275: sub get_userresdata {
11276: my ($uname,$udom)=@_;
11277: #most student don\'t have any data set, check if there is some data
11278: if (&EXT_cache_status($udom,$uname)) { return undef; }
11279:
11280: my $hashid="$udom:$uname";
11281: my ($result,$cached)=&is_cached_new('userres',$hashid);
11282: if (!defined($cached)) {
11283: my %resourcedata=&dump('resourcedata',$udom,$uname);
11284: $result=\%resourcedata;
11285: &do_cache_new('userres',$hashid,$result,600);
11286: }
11287: my ($tmp)=keys(%$result);
11288: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11289: return $result;
11290: }
11291: #error 2 occurs when the .db doesn't exist
11292: if ($tmp!~/error: 2 /) {
11293: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11294: &logthis("<font color=\"blue\">WARNING:".
11295: " Trying to get resource data for ".
11296: $uname." at ".$udom.": ".
11297: $tmp."</font>");
11298: }
11299: } elsif ($tmp=~/error: 2 /) {
11300: #&EXT_cache_set($udom,$uname);
11301: &do_cache_new('userres',$hashid,undef,600);
11302: undef($tmp); # not really an error so don't send it back
11303: }
11304: return $tmp;
11305: }
11306: #----------------------------------------------- resdata - return resource data
11307: # Purpose:
11308: # Return resource data for either users or for a course.
11309: # Parameters:
11310: # $name - Course/user name.
11311: # $domain - Name of the domain the user/course is registered on.
11312: # $type - Type of thing $name is (must be 'course' or 'user')
11313: # $mapp - decluttered URL of enclosing map
11314: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11315: # $recurseup - Ref to array of map URLs, starting with map containing
11316: # $mapp up through hierarchy of nested maps to top level map.
11317: # $courseid - CourseID (first part of param identifier).
11318: # $modifier - Middle part of param identifier.
11319: # $what - Last part of param identifier.
11320: # @which - Array of names of resources desired.
11321: # Returns:
11322: # The value of the first reasource in @which that is found in the
11323: # resource hash.
11324: # Exceptional Conditions:
11325: # If the $type passed in is not valid (not the string 'course' or
11326: # 'user', an undefined reference is returned.
11327: # If none of the resources are found, an undef is returned
11328: sub resdata {
11329: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11330: $modifier,$what,@which)=@_;
11331: my $result;
11332: if ($type eq 'course') {
11333: $result=&get_courseresdata($name,$domain);
11334: } elsif ($type eq 'user') {
11335: $result=&get_userresdata($name,$domain);
11336: }
11337: if (!ref($result)) { return $result; }
11338: foreach my $item (@which) {
11339: if ($item->[1] eq 'course') {
11340: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11341: unless ($$recursed) {
11342: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11343: $$recursed = 1;
11344: }
11345: foreach my $item (@${recurseup}) {
11346: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11347: last if (defined($result->{$norecursechk}));
11348: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11349: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11350: }
11351: }
11352: }
11353: if (defined($result->{$item->[0]})) {
11354: return [$result->{$item->[0]},$item->[1]];
11355: }
11356: }
11357: return undef;
11358: }
11359:
11360: sub get_domain_lti {
11361: my ($cdom,$context) = @_;
11362: my ($name,%lti);
11363: if ($context eq 'consumer') {
11364: $name = 'ltitools';
11365: } elsif ($context eq 'provider') {
11366: $name = 'lti';
11367: } else {
11368: return %lti;
11369: }
11370: my ($result,$cached)=&is_cached_new($name,$cdom);
11371: if (defined($cached)) {
11372: if (ref($result) eq 'HASH') {
11373: %lti = %{$result};
11374: }
11375: } else {
11376: my %domconfig = &get_dom('configuration',[$name],$cdom);
11377: if (ref($domconfig{$name}) eq 'HASH') {
11378: %lti = %{$domconfig{$name}};
11379: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11380: if (ref($encdomconfig{$name}) eq 'HASH') {
11381: foreach my $id (keys(%lti)) {
11382: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11383: foreach my $item ('key','secret') {
11384: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11385: }
11386: }
11387: }
11388: }
11389: }
11390: my $cachetime = 24*60*60;
11391: &do_cache_new($name,$cdom,\%lti,$cachetime);
11392: }
11393: return %lti;
11394: }
11395:
11396: sub get_numsuppfiles {
11397: my ($cnum,$cdom,$ignorecache)=@_;
11398: my $hashid=$cnum.':'.$cdom;
11399: my ($suppcount,$cached);
11400: unless ($ignorecache) {
11401: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11402: }
11403: unless (defined($cached)) {
11404: my $chome=&homeserver($cnum,$cdom);
11405: unless ($chome eq 'no_host') {
11406: ($suppcount,my $supptools,my $errors) = (0,0,0);
11407: my $suppmap = 'supplemental.sequence';
11408: ($suppcount,$supptools,$errors) =
11409: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11410: $supptools,$errors);
11411: }
11412: &do_cache_new('suppcount',$hashid,$suppcount,600);
11413: }
11414: return $suppcount;
11415: }
11416:
11417: #
11418: # EXT resource caching routines
11419: #
11420:
11421: {
11422: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11423: #
11424: # The course for which we cache
11425: my $cachedmapkey='';
11426: # The cached recursive maps for this course
11427: my %cachedmaps=();
11428: # When this was last done
11429: my $cachedmaptime='';
11430:
11431: sub clear_EXT_cache_status {
11432: &delenv('cache.EXT.');
11433: }
11434:
11435: sub EXT_cache_status {
11436: my ($target_domain,$target_user) = @_;
11437: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11438: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11439: # We know already the user has no data
11440: return 1;
11441: } else {
11442: return 0;
11443: }
11444: }
11445:
11446: sub EXT_cache_set {
11447: my ($target_domain,$target_user) = @_;
11448: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11449: #&appenv({$cachename => time});
11450: }
11451:
11452: # --------------------------------------------------------- Value of a Variable
11453: sub EXT {
11454:
11455: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11456: unless ($varname) { return ''; }
11457: #get real user name/domain, courseid and symb
11458: my $courseid;
11459: my $publicuser;
11460: if ($symbparm) {
11461: $symbparm=&get_symb_from_alias($symbparm);
11462: }
11463: if (!($uname && $udom)) {
11464: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11465: if (!$symbparm) { $symbparm=$cursymb; }
11466: } else {
11467: $courseid=$env{'request.course.id'};
11468: }
11469: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11470: my $rest;
11471: if (defined($therest[0])) {
11472: $rest=join('.',@therest);
11473: } else {
11474: $rest='';
11475: }
11476:
11477: my $qualifierrest=$qualifier;
11478: if ($rest) { $qualifierrest.='.'.$rest; }
11479: my $spacequalifierrest=$space;
11480: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11481: if ($realm eq 'user') {
11482: # --------------------------------------------------------------- user.resource
11483: if ($space eq 'resource') {
11484: if ( (defined($Apache::lonhomework::parsing_a_problem)
11485: || defined($Apache::lonhomework::parsing_a_task))
11486: &&
11487: ($symbparm eq &symbread()) ) {
11488: # if we are in the middle of processing the resource the
11489: # get the value we are planning on committing
11490: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11491: return $Apache::lonhomework::results{$qualifierrest};
11492: } else {
11493: return $Apache::lonhomework::history{$qualifierrest};
11494: }
11495: } else {
11496: my %restored;
11497: if ($publicuser || $env{'request.state'} eq 'construct') {
11498: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11499: } else {
11500: %restored=&restore($symbparm,$courseid,$udom,$uname);
11501: }
11502: return $restored{$qualifierrest};
11503: }
11504: # ----------------------------------------------------------------- user.access
11505: } elsif ($space eq 'access') {
11506: # FIXME - not supporting calls for a specific user
11507: return &allowed($qualifier,$rest);
11508: # ------------------------------------------ user.preferences, user.environment
11509: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11510: if (($uname eq $env{'user.name'}) &&
11511: ($udom eq $env{'user.domain'})) {
11512: return $env{join('.',('environment',$qualifierrest))};
11513: } else {
11514: my %returnhash;
11515: if (!$publicuser) {
11516: %returnhash=&userenvironment($udom,$uname,
11517: $qualifierrest);
11518: }
11519: return $returnhash{$qualifierrest};
11520: }
11521: # ----------------------------------------------------------------- user.course
11522: } elsif ($space eq 'course') {
11523: # FIXME - not supporting calls for a specific user
11524: return $env{join('.',('request.course',$qualifier))};
11525: # ------------------------------------------------------------------- user.role
11526: } elsif ($space eq 'role') {
11527: # FIXME - not supporting calls for a specific user
11528: my ($role,$where)=split(/\./,$env{'request.role'});
11529: if ($qualifier eq 'value') {
11530: return $role;
11531: } elsif ($qualifier eq 'extent') {
11532: return $where;
11533: }
11534: # ----------------------------------------------------------------- user.domain
11535: } elsif ($space eq 'domain') {
11536: return $udom;
11537: # ------------------------------------------------------------------- user.name
11538: } elsif ($space eq 'name') {
11539: return $uname;
11540: # ---------------------------------------------------- Any other user namespace
11541: } else {
11542: my %reply;
11543: if (!$publicuser) {
11544: %reply=&get($space,[$qualifierrest],$udom,$uname);
11545: }
11546: return $reply{$qualifierrest};
11547: }
11548: } elsif ($realm eq 'query') {
11549: # ---------------------------------------------- pull stuff out of query string
11550: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11551: [$spacequalifierrest]);
11552: return $env{'form.'.$spacequalifierrest};
11553: } elsif ($realm eq 'request') {
11554: # ------------------------------------------------------------- request.browser
11555: if ($space eq 'browser') {
11556: return $env{'browser.'.$qualifier};
11557: # ------------------------------------------------------------ request.filename
11558: } else {
11559: return $env{'request.'.$spacequalifierrest};
11560: }
11561: } elsif ($realm eq 'course') {
11562: # ---------------------------------------------------------- course.description
11563: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11564: } elsif ($realm eq 'resource') {
11565:
11566: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11567: if (!$symbparm) { $symbparm=&symbread(); }
11568: }
11569:
11570: if ($qualifier eq '') {
11571: if ($space eq 'title') {
11572: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11573: return &gettitle($symbparm);
11574: }
11575:
11576: if ($space eq 'map') {
11577: my ($map) = &decode_symb($symbparm);
11578: return &symbread($map);
11579: }
11580: if ($space eq 'maptitle') {
11581: my ($map) = &decode_symb($symbparm);
11582: return &gettitle($map);
11583: }
11584: if ($space eq 'filename') {
11585: if ($symbparm) {
11586: return &clutter((&decode_symb($symbparm))[2]);
11587: }
11588: return &hreflocation('',$env{'request.filename'});
11589: }
11590:
11591: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11592: if ($space eq 'visibleparts') {
11593: my $navmap = Apache::lonnavmaps::navmap->new();
11594: my $item;
11595: if (ref($navmap)) {
11596: my $res = $navmap->getBySymb($symbparm);
11597: my $parts = $res->parts();
11598: if (ref($parts) eq 'ARRAY') {
11599: $item = join(',',@{$parts});
11600: }
11601: undef($navmap);
11602: }
11603: return $item;
11604: }
11605: }
11606: }
11607:
11608: my ($section, $group, @groups, @recurseup, $recursed);
11609: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11610: if (($courseid eq '') && ($cid)) {
11611: $courseid = $cid;
11612: }
11613: if (($symbparm && $courseid) &&
11614: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11615:
11616: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11617:
11618: # ----------------------------------------------------- Cascading lookup scheme
11619: my $symbp=$symbparm;
11620: $mapp=&deversion((&decode_symb($symbp))[0]);
11621: my $symbparm=$symbp.'.'.$spacequalifierrest;
11622: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11623: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11624: if (($env{'user.name'} eq $uname) &&
11625: ($env{'user.domain'} eq $udom)) {
11626: $section=$env{'request.course.sec'};
11627: @groups = split(/:/,$env{'request.course.groups'});
11628: @groups=&sort_course_groups($courseid,@groups);
11629: } else {
11630: if (! defined($usection)) {
11631: $section=&getsection($udom,$uname,$courseid);
11632: } else {
11633: $section = $usection;
11634: }
11635: @groups = &get_users_groups($udom,$uname,$courseid);
11636: }
11637:
11638: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11639: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11640: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11641: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11642:
11643: $courselevel=$courseid.'.'.$spacequalifierrest;
11644: my $courselevelr=$courseid.'.'.$symbparm;
11645: $courseleveli=$courseid.'.'.$recurseparm;
11646: $courselevelm=$courseid.'.'.$mapparm;
11647:
11648: # ----------------------------------------------------------- first, check user
11649:
11650: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11651: \@recurseup,$courseid,'.',$spacequalifierrest,
11652: ([$courselevelr,'resource'],
11653: [$courselevelm,'map' ],
11654: [$courseleveli,'map' ],
11655: [$courselevel, 'course' ]));
11656: if (defined($userreply)) { return &get_reply($userreply); }
11657:
11658: # ------------------------------------------------ second, check some of course
11659: my $coursereply;
11660: if (@groups > 0) {
11661: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11662: $recurseparm,$mapparm,$spacequalifierrest,
11663: $mapp,\$recursed,\@recurseup);
11664: if (defined($coursereply)) { return &get_reply($coursereply); }
11665: }
11666:
11667: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11668: $env{'course.'.$courseid.'.domain'},
11669: 'course',$mapp,\$recursed,\@recurseup,
11670: $courseid,'.['.$section.'].',$spacequalifierrest,
11671: ([$seclevelr, 'resource'],
11672: [$seclevelm, 'map' ],
11673: [$secleveli, 'map' ],
11674: [$seclevel, 'course' ],
11675: [$courselevelr,'resource']));
11676: if (defined($coursereply)) { return &get_reply($coursereply); }
11677:
11678: # ------------------------------------------------------ third, check map parms
11679: my %parmhash=();
11680: my $thisparm='';
11681: if (tie(%parmhash,'GDBM_File',
11682: $env{'request.course.fn'}.'_parms.db',
11683: &GDBM_READER(),0640)) {
11684: $thisparm=$parmhash{$symbparm};
11685: untie(%parmhash);
11686: }
11687: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11688: }
11689: # ------------------------------------------ fourth, look in resource metadata
11690:
11691: my $what = $spacequalifierrest;
11692: $what=~s/\./\_/;
11693: my $filename;
11694: if (!$symbparm) { $symbparm=&symbread(); }
11695: if ($symbparm) {
11696: $filename=(&decode_symb($symbparm))[2];
11697: } else {
11698: $filename=$env{'request.filename'};
11699: }
11700: my $toolsymb;
11701: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11702: $toolsymb = $symbparm;
11703: }
11704: my $metadata=&metadata($filename,$what,$toolsymb);
11705: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11706: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11707: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11708:
11709: # ----------------------------------------------- fifth, look in rest of course
11710: if ($symbparm && defined($courseid) &&
11711: $courseid eq $env{'request.course.id'}) {
11712: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11713: $env{'course.'.$courseid.'.domain'},
11714: 'course',$mapp,\$recursed,\@recurseup,
11715: $courseid,'.',$spacequalifierrest,
11716: ([$courselevelm,'map' ],
11717: [$courseleveli,'map' ],
11718: [$courselevel, 'course']));
11719: if (defined($coursereply)) { return &get_reply($coursereply); }
11720: }
11721: # ------------------------------------------------------------------ Cascade up
11722: unless ($space eq '0') {
11723: my @parts=split(/_/,$space);
11724: my $id=pop(@parts);
11725: my $part=join('_',@parts);
11726: if ($part eq '') { $part='0'; }
11727: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11728: $symbparm,$udom,$uname,$section,1);
11729: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11730: }
11731: if ($recurse) { return undef; }
11732: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11733: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11734: # ---------------------------------------------------- Any other user namespace
11735: } elsif ($realm eq 'environment') {
11736: # ----------------------------------------------------------------- environment
11737: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11738: return $env{'environment.'.$spacequalifierrest};
11739: } else {
11740: if ($uname eq 'anonymous' && $udom eq '') {
11741: return '';
11742: }
11743: my %returnhash=&userenvironment($udom,$uname,
11744: $spacequalifierrest);
11745: return $returnhash{$spacequalifierrest};
11746: }
11747: } elsif ($realm eq 'system') {
11748: # ----------------------------------------------------------------- system.time
11749: if ($space eq 'time') {
11750: return time;
11751: }
11752: } elsif ($realm eq 'server') {
11753: # ----------------------------------------------------------------- system.time
11754: if ($space eq 'name') {
11755: return $ENV{'SERVER_NAME'};
11756: }
11757: }
11758: return '';
11759: }
11760:
11761: sub get_reply {
11762: my ($reply_value) = @_;
11763: if (ref($reply_value) eq 'ARRAY') {
11764: if (wantarray) {
11765: return @$reply_value;
11766: }
11767: return $reply_value->[0];
11768: } else {
11769: return $reply_value;
11770: }
11771: }
11772:
11773: sub check_group_parms {
11774: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11775: $recursed,$recurseupref) = @_;
11776: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11777: [$what,'course']);
11778: my $coursereply;
11779: foreach my $group (@{$groups}) {
11780: my @groupitems = ();
11781: foreach my $level (@levels) {
11782: my $item = $courseid.'.['.$group.'].'.$level->[0];
11783: push(@groupitems,[$item,$level->[1]]);
11784: }
11785: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11786: $env{'course.'.$courseid.'.domain'},
11787: 'course',$mapp,$recursed,$recurseupref,
11788: $courseid,'.['.$group.'].',$what,
11789: @groupitems);
11790: last if (defined($coursereply));
11791: }
11792: return $coursereply;
11793: }
11794:
11795: sub get_map_hierarchy {
11796: my ($mapname,$courseid) = @_;
11797: my @recurseup = ();
11798: if ($mapname) {
11799: if (($cachedmapkey eq $courseid) &&
11800: (abs($cachedmaptime-time)<5)) {
11801: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11802: return @{$cachedmaps{$mapname}};
11803: }
11804: }
11805: my $navmap = Apache::lonnavmaps::navmap->new();
11806: if (ref($navmap)) {
11807: @recurseup = $navmap->recurseup_maps($mapname);
11808: undef($navmap);
11809: $cachedmaps{$mapname} = \@recurseup;
11810: $cachedmaptime=time;
11811: $cachedmapkey=$courseid;
11812: }
11813: }
11814: return @recurseup;
11815: }
11816:
11817: }
11818:
11819: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11820: my ($courseid,@groups) = @_;
11821: @groups = sort(@groups);
11822: return @groups;
11823: }
11824:
11825: sub packages_tab_default {
11826: my ($uri,$varname,$toolsymb)=@_;
11827: my (undef,$part,$name)=split(/\./,$varname);
11828:
11829: my (@extension,@specifics,$do_default);
11830: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11831: my ($pack_type,$pack_part)=split(/_/,$package,2);
11832: if ($pack_type eq 'default') {
11833: $do_default=1;
11834: } elsif ($pack_type eq 'extension') {
11835: push(@extension,[$package,$pack_type,$pack_part]);
11836: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11837: # only look at packages defaults for packages that this id is
11838: push(@specifics,[$package,$pack_type,$pack_part]);
11839: }
11840: }
11841: # first look for a package that matches the requested part id
11842: foreach my $package (@specifics) {
11843: my (undef,$pack_type,$pack_part)=@{$package};
11844: next if ($pack_part ne $part);
11845: if (defined($packagetab{"$pack_type&$name&default"})) {
11846: return $packagetab{"$pack_type&$name&default"};
11847: }
11848: }
11849: # look for any possible matching non extension_ package
11850: foreach my $package (@specifics) {
11851: my (undef,$pack_type,$pack_part)=@{$package};
11852: if (defined($packagetab{"$pack_type&$name&default"})) {
11853: return $packagetab{"$pack_type&$name&default"};
11854: }
11855: if ($pack_type eq 'part') { $pack_part='0'; }
11856: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11857: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11858: }
11859: }
11860: # look for any posible extension_ match
11861: foreach my $package (@extension) {
11862: my ($package,$pack_type)=@{$package};
11863: if (defined($packagetab{"$pack_type&$name&default"})) {
11864: return $packagetab{"$pack_type&$name&default"};
11865: }
11866: if (defined($packagetab{$package."&$name&default"})) {
11867: return $packagetab{$package."&$name&default"};
11868: }
11869: }
11870: # look for a global default setting
11871: if ($do_default && defined($packagetab{"default&$name&default"})) {
11872: return $packagetab{"default&$name&default"};
11873: }
11874: return undef;
11875: }
11876:
11877: sub add_prefix_and_part {
11878: my ($prefix,$part)=@_;
11879: my $keyroot;
11880: if (defined($prefix) && $prefix !~ /^__/) {
11881: # prefix that has a part already
11882: $keyroot=$prefix;
11883: } elsif (defined($prefix)) {
11884: # prefix that is missing a part
11885: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11886: } else {
11887: # no prefix at all
11888: if (defined($part)) { $keyroot='_'.$part; }
11889: }
11890: return $keyroot;
11891: }
11892:
11893: # ---------------------------------------------------------------- Get metadata
11894:
11895: my %metaentry;
11896: my %importedpartids;
11897: my %importedrespids;
11898: sub metadata {
11899: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11900: $uri=&declutter($uri);
11901: # if it is a non metadata possible uri return quickly
11902: if (($uri eq '') ||
11903: (($uri =~ m|^/*adm/|) &&
11904: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11905: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11906: return undef;
11907: }
11908: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11909: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11910: return undef;
11911: }
11912: my $filename=$uri;
11913: $uri=~s/\.meta$//;
11914: #
11915: # Is the metadata already cached?
11916: # Look at timestamp of caching
11917: # Everything is cached by the main uri, libraries are never directly cached
11918: #
11919: if (!defined($liburi)) {
11920: my ($result,$cached)=&is_cached_new('meta',$uri);
11921: if (defined($cached)) { return $result->{':'.$what}; }
11922: }
11923:
11924: #
11925: # If the uri is for an external tool the file from
11926: # which metadata should be retrieved depends on whether
11927: # the tool had been configured to be gradable (set in the Course
11928: # Editor or Resource Editor).
11929: #
11930: # If a valid symb has been included as the third arg in the call
11931: # to &metadata() that can be used to retrieve the value of
11932: # parameter_0_gradable set for the resource, and included in the
11933: # uploaded map containing the tool. The value is retrieved via
11934: # &EXT(), if a valid symb is available. Otherwise the value of
11935: # gradable in the exttool_$marker.db file for the tool instance
11936: # is retrieved via &get().
11937: #
11938: # When lonuserstate::traceroute() calls lonnet::EXT() for
11939: # hiddenresource and encrypturl (during course initialization)
11940: # the map-level parameter for resource.0.gradable included in the
11941: # uploaded map containing the tool will not yet have been stored
11942: # in the user_course_parms.db file for the user's session, so in
11943: # this case fall back to retrieving gradable status from the
11944: # exttool_$marker.db file.
11945: #
11946: # In order to avoid an infinite loop, &metadata() will return
11947: # before a call to &EXT(), if the uri is for an external tool
11948: # and the $what for which metadata is being requested is
11949: # parameter_0_gradable or 0_gradable.
11950: #
11951:
11952: if ($uri =~ /ext\.tool$/) {
11953: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11954: return;
11955: } else {
11956: my ($checked,$use_passback);
11957: if ($toolsymb ne '') {
11958: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11959: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11960: $checked = 1;
11961: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11962: $use_passback = 1;
11963: }
11964: }
11965: }
11966: unless ($checked) {
11967: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11968: $marker=~s/\D//g;
11969: if ($marker) {
11970: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11971: $use_passback = $toolsettings{'gradable'};
11972: }
11973: }
11974: if ($use_passback) {
11975: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11976: } else {
11977: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11978: }
11979: }
11980: }
11981:
11982: {
11983: # Imported parts would go here
11984: my @origfiletagids=();
11985: my $importedparts=0;
11986:
11987: # Imported responseids would go here
11988: my $importedresponses=0;
11989: #
11990: # Is this a recursive call for a library?
11991: #
11992: # if (! exists($metacache{$uri})) {
11993: # $metacache{$uri}={};
11994: # }
11995: my $cachetime = 60*60;
11996: if ($liburi) {
11997: $liburi=&declutter($liburi);
11998: $filename=$liburi;
11999: } else {
12000: &devalidate_cache_new('meta',$uri);
12001: undef(%metaentry);
12002: }
12003: my %metathesekeys=();
12004: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12005: my $metastring;
12006: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12007: my $which = &hreflocation('','/'.($liburi || $uri));
12008: $metastring =
12009: &Apache::lonnet::ssi_body($which,
12010: ('grade_target' => 'meta'));
12011: $cachetime = 1; # only want this cached in the child not long term
12012: } elsif (($uri !~ m -^(editupload)/-) &&
12013: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12014: my $file=&filelocation('',&clutter($filename));
12015: #push(@{$metaentry{$uri.'.file'}},$file);
12016: $metastring=&getfile($file);
12017: }
12018: my $parser=HTML::LCParser->new(\$metastring);
12019: my $token;
12020: undef %metathesekeys;
12021: while ($token=$parser->get_token) {
12022: if ($token->[0] eq 'S') {
12023: if (defined($token->[2]->{'package'})) {
12024: #
12025: # This is a package - get package info
12026: #
12027: my $package=$token->[2]->{'package'};
12028: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12029: if (defined($token->[2]->{'id'})) {
12030: $keyroot.='_'.$token->[2]->{'id'};
12031: }
12032: if ($metaentry{':packages'}) {
12033: $metaentry{':packages'}.=','.$package.$keyroot;
12034: } else {
12035: $metaentry{':packages'}=$package.$keyroot;
12036: }
12037: foreach my $pack_entry (keys(%packagetab)) {
12038: my $part=$keyroot;
12039: $part=~s/^\_//;
12040: if ($pack_entry=~/^\Q$package\E\&/ ||
12041: $pack_entry=~/^\Q$package\E_0\&/) {
12042: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12043: # ignore package.tab specified default values
12044: # here &package_tab_default() will fetch those
12045: if ($subp eq 'default') { next; }
12046: my $value=$packagetab{$pack_entry};
12047: my $unikey;
12048: if ($pack =~ /_0$/) {
12049: $unikey='parameter_0_'.$name;
12050: $part=0;
12051: } else {
12052: $unikey='parameter'.$keyroot.'_'.$name;
12053: }
12054: if ($subp eq 'display') {
12055: $value.=' [Part: '.$part.']';
12056: }
12057: $metaentry{':'.$unikey.'.part'}=$part;
12058: $metathesekeys{$unikey}=1;
12059: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12060: $metaentry{':'.$unikey.'.'.$subp}=$value;
12061: }
12062: if (defined($metaentry{':'.$unikey.'.default'})) {
12063: $metaentry{':'.$unikey}=
12064: $metaentry{':'.$unikey.'.default'};
12065: }
12066: }
12067: }
12068: } else {
12069: #
12070: # This is not a package - some other kind of start tag
12071: #
12072: my $entry=$token->[1];
12073: my $unikey='';
12074:
12075: if ($entry eq 'import') {
12076: #
12077: # Importing a library here
12078: #
12079: my $location=$parser->get_text('/import');
12080: my $dir=$filename;
12081: $dir=~s|[^/]*$||;
12082: $location=&filelocation($dir,$location);
12083:
12084: my $importid=$token->[2]->{'id'};
12085: my $importmode=$token->[2]->{'importmode'};
12086: #
12087: # Check metadata for imported file to
12088: # see if it contained response items
12089: #
12090: my ($origfile,@libfilekeys);
12091: my %currmetaentry = %metaentry;
12092: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12093: $depthcount+1));
12094: if (grep(/^responseorder$/,@libfilekeys)) {
12095: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12096: undef,$depthcount+1);
12097: if ($libresponseorder ne '') {
12098: if ($#origfiletagids<0) {
12099: undef(%importedrespids);
12100: undef(%importedpartids);
12101: }
12102: my @respids = split(/\s*,\s*/,$libresponseorder);
12103: if (@respids) {
12104: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12105: }
12106: if ($importedrespids{$importid} ne '') {
12107: $importedresponses = 1;
12108: # We need to get the original file and the imported file to get the response order correct
12109: # Load and inspect original file
12110: if ($#origfiletagids<0) {
12111: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12112: $origfile=&getfile($origfilelocation);
12113: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12114: }
12115: }
12116: }
12117: }
12118: # Do not overwrite contents of %metaentry hash for resource itself with
12119: # hash populated for imported library file
12120: %metaentry = %currmetaentry;
12121: undef(%currmetaentry);
12122: if ($importmode eq 'part') {
12123: # Import as part(s)
12124: $importedparts=1;
12125: # We need to get the original file and the imported file to get the part order correct
12126: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12127: # Load and inspect original file if we didn't do that already
12128: if ($#origfiletagids<0) {
12129: undef(%importedrespids);
12130: undef(%importedpartids);
12131: if ($origfile eq '') {
12132: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12133: $origfile=&getfile($origfilelocation);
12134: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12135: }
12136: }
12137: my @impfilepartids;
12138: # If <partorder> tag is included in metadata for the imported file
12139: # get the parts in the imported file from that.
12140: if (grep(/^partorder$/,@libfilekeys)) {
12141: %currmetaentry = %metaentry;
12142: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12143: $depthcount+1);
12144: %metaentry = %currmetaentry;
12145: undef(%currmetaentry);
12146: if ($libpartorder ne '') {
12147: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12148: }
12149: } else {
12150: # If no <partorder> tag available, load and inspect imported file
12151: my $impfile=&getfile($location);
12152: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12153: }
12154: if ($#impfilepartids>=0) {
12155: # This problem had parts
12156: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12157: } else {
12158: # Importing by turning a single problem into a problem part
12159: # It gets the import-tags ID as part-ID
12160: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12161: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12162: }
12163: } else {
12164: # Import as problem or as normal import
12165: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12166: unless ($importmode eq 'problem') {
12167: # Normal import
12168: if (defined($token->[2]->{'id'})) {
12169: $unikey.='_'.$token->[2]->{'id'};
12170: }
12171: }
12172: # Check metadata for imported file to
12173: # see if it contained parts
12174: if (grep(/^partorder$/,@libfilekeys)) {
12175: %currmetaentry = %metaentry;
12176: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12177: $depthcount+1);
12178: %metaentry = %currmetaentry;
12179: undef(%currmetaentry);
12180: if ($libpartorder ne '') {
12181: $importedparts = 1;
12182: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12183: }
12184: }
12185: }
12186: if ($depthcount<20) {
12187: my $metadata =
12188: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12189: $depthcount+1);
12190: foreach my $meta (split(',',$metadata)) {
12191: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12192: $metathesekeys{$meta}=1;
12193: }
12194: }
12195: } else {
12196: #
12197: # Not importing, some other kind of non-package, non-library start tag
12198: #
12199: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12200: if (defined($token->[2]->{'id'})) {
12201: $unikey.='_'.$token->[2]->{'id'};
12202: }
12203: if (defined($token->[2]->{'name'})) {
12204: $unikey.='_'.$token->[2]->{'name'};
12205: }
12206: $metathesekeys{$unikey}=1;
12207: foreach my $param (@{$token->[3]}) {
12208: $metaentry{':'.$unikey.'.'.$param} =
12209: $token->[2]->{$param};
12210: }
12211: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12212: my $default=$metaentry{':'.$unikey.'.default'};
12213: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12214: # only ws inside the tag, and not in default, so use default
12215: # as value
12216: $metaentry{':'.$unikey}=$default;
12217: } elsif ( $internaltext =~ /\S/ ) {
12218: # something interesting inside the tag
12219: $metaentry{':'.$unikey}=$internaltext;
12220: } else {
12221: # no interesting values, don't set a default
12222: }
12223: # end of not-a-package not-a-library import
12224: }
12225: # end of not-a-package start tag
12226: }
12227: # the next is the end of "start tag"
12228: }
12229: }
12230: my ($extension) = ($uri =~ /\.(\w+)$/);
12231: $extension = lc($extension);
12232: if ($extension eq 'htm') { $extension='html'; }
12233:
12234: foreach my $key (keys(%packagetab)) {
12235: #no specific packages #how's our extension
12236: if ($key!~/^extension_\Q$extension\E&/) { next; }
12237: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12238: \%metathesekeys);
12239: }
12240:
12241: if (!exists($metaentry{':packages'})
12242: || $packagetab{"import_defaults&extension_$extension"}) {
12243: foreach my $key (keys(%packagetab)) {
12244: #no specific packages well let's get default then
12245: if ($key!~/^default&/) { next; }
12246: &metadata_create_package_def($uri,$key,'default',
12247: \%metathesekeys);
12248: }
12249: }
12250: # are there custom rights to evaluate
12251: if ($metaentry{':copyright'} eq 'custom') {
12252:
12253: #
12254: # Importing a rights file here
12255: #
12256: unless ($depthcount) {
12257: my $location=$metaentry{':customdistributionfile'};
12258: my $dir=$filename;
12259: $dir=~s|[^/]*$||;
12260: $location=&filelocation($dir,$location);
12261: my $rights_metadata =
12262: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12263: $depthcount+1);
12264: foreach my $rights (split(',',$rights_metadata)) {
12265: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12266: $metathesekeys{$rights}=1;
12267: }
12268: }
12269: }
12270: # uniqifiy package listing
12271: my %seen;
12272: my @uniq_packages =
12273: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12274: $metaentry{':packages'} = join(',',@uniq_packages);
12275:
12276: if (($importedresponses) || ($importedparts)) {
12277: if ($importedparts) {
12278: # We had imported parts and need to rebuild partorder
12279: $metaentry{':partorder'}='';
12280: $metathesekeys{'partorder'}=1;
12281: }
12282: if ($importedresponses) {
12283: # We had imported responses and need to rebuil responseorder
12284: $metaentry{':responseorder'}='';
12285: $metathesekeys{'responseorder'}=1;
12286: }
12287: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12288: my $origid = $origfiletagids[$index+1];
12289: if ($origfiletagids[$index] eq 'part') {
12290: # Original part, part of the problem
12291: if ($importedparts) {
12292: $metaentry{':partorder'}.=','.$origid;
12293: }
12294: } elsif ($origfiletagids[$index] eq 'import') {
12295: if ($importedparts) {
12296: # We have imported parts at this position
12297: if ($importedpartids{$origid} ne '') {
12298: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12299: }
12300: }
12301: if ($importedresponses) {
12302: # We have imported responses at this position
12303: if ($importedrespids{$origid} ne '') {
12304: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12305: }
12306: }
12307: } else {
12308: # Original response item, part of the problem
12309: if ($importedresponses) {
12310: $metaentry{':responseorder'}.=','.$origid;
12311: }
12312: }
12313: }
12314: if ($importedparts) {
12315: $metaentry{':partorder'}=~s/^\,//;
12316: }
12317: if ($importedresponses) {
12318: $metaentry{':responseorder'}=~s/^\,//;
12319: }
12320: }
12321: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12322: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12323: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12324: unless ($liburi) {
12325: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12326: }
12327: # this is the end of "was not already recently cached
12328: }
12329: return $metaentry{':'.$what};
12330: }
12331:
12332: sub metadata_create_package_def {
12333: my ($uri,$key,$package,$metathesekeys)=@_;
12334: my ($pack,$name,$subp)=split(/\&/,$key);
12335: if ($subp eq 'default') { next; }
12336:
12337: if (defined($metaentry{':packages'})) {
12338: $metaentry{':packages'}.=','.$package;
12339: } else {
12340: $metaentry{':packages'}=$package;
12341: }
12342: my $value=$packagetab{$key};
12343: my $unikey;
12344: $unikey='parameter_0_'.$name;
12345: $metaentry{':'.$unikey.'.part'}=0;
12346: $$metathesekeys{$unikey}=1;
12347: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12348: $metaentry{':'.$unikey.'.'.$subp}=$value;
12349: }
12350: if (defined($metaentry{':'.$unikey.'.default'})) {
12351: $metaentry{':'.$unikey}=
12352: $metaentry{':'.$unikey.'.default'};
12353: }
12354: }
12355:
12356: sub metadata_generate_part0 {
12357: my ($metadata,$metacache,$uri) = @_;
12358: my %allnames;
12359: foreach my $metakey (keys(%$metadata)) {
12360: if ($metakey=~/^parameter\_(.*)/) {
12361: my $part=$$metacache{':'.$metakey.'.part'};
12362: my $name=$$metacache{':'.$metakey.'.name'};
12363: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12364: $allnames{$name}=$part;
12365: }
12366: }
12367: }
12368: foreach my $name (keys(%allnames)) {
12369: $$metadata{"parameter_0_$name"}=1;
12370: my $key=":parameter_0_$name";
12371: $$metacache{"$key.part"}='0';
12372: $$metacache{"$key.name"}=$name;
12373: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12374: $allnames{$name}.'_'.$name.
12375: '.type'};
12376: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12377: '.display'};
12378: my $expr='[Part: '.$allnames{$name}.']';
12379: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12380: $$metacache{"$key.display"}=$olddis;
12381: }
12382: }
12383:
12384: # ------------------------------------------------------ Devalidate title cache
12385:
12386: sub devalidate_title_cache {
12387: my ($url)=@_;
12388: if (!$env{'request.course.id'}) { return; }
12389: my $symb=&symbread($url);
12390: if (!$symb) { return; }
12391: my $key=$env{'request.course.id'}."\0".$symb;
12392: &devalidate_cache_new('title',$key);
12393: }
12394:
12395: # ------------------------------------------------- Get the title of a course
12396:
12397: sub current_course_title {
12398: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12399: }
12400: # ------------------------------------------------- Get the title of a resource
12401:
12402: sub gettitle {
12403: my $urlsymb=shift;
12404: my $symb=&symbread($urlsymb);
12405: if ($symb) {
12406: my $key=$env{'request.course.id'}."\0".$symb;
12407: my ($result,$cached)=&is_cached_new('title',$key);
12408: if (defined($cached)) {
12409: return $result;
12410: }
12411: my ($map,$resid,$url)=&decode_symb($symb);
12412: my $title='';
12413: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12414: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12415: } else {
12416: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12417: &GDBM_READER(),0640)) {
12418: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12419: $title=$bighash{'title_'.$mapid.'.'.$resid};
12420: untie(%bighash);
12421: }
12422: }
12423: $title=~s/\&colon\;/\:/gs;
12424: if ($title) {
12425: # Remember both $symb and $title for dynamic metadata
12426: $accesshash{$symb.'___crstitle'}=$title;
12427: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12428: # Cache this title and then return it
12429: return &do_cache_new('title',$key,$title,600);
12430: }
12431: $urlsymb=$url;
12432: }
12433: my $title=&metadata($urlsymb,'title');
12434: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12435: return $title;
12436: }
12437:
12438: sub get_slot {
12439: my ($which,$cnum,$cdom)=@_;
12440: if (!$cnum || !$cdom) {
12441: (undef,my $courseid)=&whichuser();
12442: $cdom=$env{'course.'.$courseid.'.domain'};
12443: $cnum=$env{'course.'.$courseid.'.num'};
12444: }
12445: my $key=join("\0",'slots',$cdom,$cnum,$which);
12446: my %slotinfo;
12447: if (exists($remembered{$key})) {
12448: $slotinfo{$which} = $remembered{$key};
12449: } else {
12450: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12451: &Apache::lonhomework::showhash(%slotinfo);
12452: my ($tmp)=keys(%slotinfo);
12453: if ($tmp=~/^error:/) { return (); }
12454: $remembered{$key} = $slotinfo{$which};
12455: }
12456: if (ref($slotinfo{$which}) eq 'HASH') {
12457: return %{$slotinfo{$which}};
12458: }
12459: return $slotinfo{$which};
12460: }
12461:
12462: sub get_reservable_slots {
12463: my ($cnum,$cdom,$uname,$udom) = @_;
12464: my $now = time;
12465: my $reservable_info;
12466: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12467: if (exists($remembered{$key})) {
12468: $reservable_info = $remembered{$key};
12469: } else {
12470: my %resv;
12471: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12472: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12473: $reservable_info = \%resv;
12474: $remembered{$key} = $reservable_info;
12475: }
12476: return $reservable_info;
12477: }
12478:
12479: sub get_course_slots {
12480: my ($cnum,$cdom) = @_;
12481: my $hashid=$cnum.':'.$cdom;
12482: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12483: if (defined($cached)) {
12484: if (ref($result) eq 'HASH') {
12485: return %{$result};
12486: }
12487: } else {
12488: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12489: my ($tmp) = keys(%slots);
12490: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12491: &do_cache_new('allslots',$hashid,\%slots,600);
12492: return %slots;
12493: }
12494: }
12495: return;
12496: }
12497:
12498: sub devalidate_slots_cache {
12499: my ($cnum,$cdom)=@_;
12500: my $hashid=$cnum.':'.$cdom;
12501: &devalidate_cache_new('allslots',$hashid);
12502: }
12503:
12504: sub get_coursechange {
12505: my ($cdom,$cnum) = @_;
12506: if ($cdom eq '' || $cnum eq '') {
12507: return unless ($env{'request.course.id'});
12508: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12509: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12510: }
12511: my $hashid=$cdom.'_'.$cnum;
12512: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12513: if ((defined($cached)) && ($change ne '')) {
12514: return $change;
12515: } else {
12516: my %crshash;
12517: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12518: if ($crshash{'internal.contentchange'} eq '') {
12519: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12520: if ($change eq '') {
12521: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12522: $change = $crshash{'internal.created'};
12523: }
12524: } else {
12525: $change = $crshash{'internal.contentchange'};
12526: }
12527: my $cachetime = 600;
12528: &do_cache_new('crschange',$hashid,$change,$cachetime);
12529: }
12530: return $change;
12531: }
12532:
12533: sub devalidate_coursechange_cache {
12534: my ($cnum,$cdom)=@_;
12535: my $hashid=$cnum.':'.$cdom;
12536: &devalidate_cache_new('crschange',$hashid);
12537: }
12538:
12539: # ------------------------------------------------- Update symbolic store links
12540:
12541: sub symblist {
12542: my ($mapname,%newhash)=@_;
12543: $mapname=&deversion(&declutter($mapname));
12544: my %hash;
12545: if (($env{'request.course.fn'}) && (%newhash)) {
12546: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12547: &GDBM_WRCREAT(),0640)) {
12548: foreach my $url (keys(%newhash)) {
12549: next if ($url eq 'last_known'
12550: && $env{'form.no_update_last_known'});
12551: $hash{declutter($url)}=&encode_symb($mapname,
12552: $newhash{$url}->[1],
12553: $newhash{$url}->[0]);
12554: }
12555: if (untie(%hash)) {
12556: return 'ok';
12557: }
12558: }
12559: }
12560: return 'error';
12561: }
12562:
12563: # --------------------------------------------------------------- Verify a symb
12564:
12565: sub symbverify {
12566: my ($symb,$thisurl,$encstate)=@_;
12567: my $thisfn=$thisurl;
12568: $thisfn=&declutter($thisfn);
12569: # direct jump to resource in page or to a sequence - will construct own symbs
12570: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12571: # check URL part
12572: my ($map,$resid,$url)=&decode_symb($symb);
12573:
12574: unless ($url eq $thisfn) { return 0; }
12575:
12576: $symb=&symbclean($symb);
12577: $thisurl=&deversion($thisurl);
12578: $thisfn=&deversion($thisfn);
12579:
12580: my %bighash;
12581: my $okay=0;
12582:
12583: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12584: &GDBM_READER(),0640)) {
12585: my $noclutter;
12586: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12587: $thisurl =~ s/\?.+$//;
12588: if ($map =~ m{^uploaded/.+\.page$}) {
12589: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12590: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12591: $noclutter = 1;
12592: }
12593: }
12594: my $ids;
12595: if ($noclutter) {
12596: $ids=$bighash{'ids_'.$thisurl};
12597: } else {
12598: $ids=$bighash{'ids_'.&clutter($thisurl)};
12599: }
12600: unless ($ids) {
12601: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12602: $ids=$bighash{$idkey};
12603: }
12604: if ($ids) {
12605: # ------------------------------------------------------------------- Has ID(s)
12606: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12607: $symb =~ s/\?.+$//;
12608: }
12609: foreach my $id (split(/\,/,$ids)) {
12610: my ($mapid,$resid)=split(/\./,$id);
12611: if (
12612: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12613: eq $symb) {
12614: if (ref($encstate)) {
12615: $$encstate = $bighash{'encrypted_'.$id};
12616: }
12617: if (($env{'request.role.adv'}) ||
12618: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12619: ($thisurl eq '/adm/navmaps')) {
12620: $okay=1;
12621: last;
12622: }
12623: }
12624: }
12625: }
12626: untie(%bighash);
12627: }
12628: return $okay;
12629: }
12630:
12631: # --------------------------------------------------------------- Clean-up symb
12632:
12633: sub symbclean {
12634: my $symb=shift;
12635: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12636: # remove version from map
12637: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12638:
12639: # remove version from URL
12640: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12641:
12642: # remove wrapper
12643:
12644: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12645: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12646: return $symb;
12647: }
12648:
12649: # ---------------------------------------------- Split symb to find map and url
12650:
12651: sub encode_symb {
12652: my ($map,$resid,$url)=@_;
12653: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12654: }
12655:
12656: sub decode_symb {
12657: my $symb=shift;
12658: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12659: my ($map,$resid,$url)=split(/___/,$symb);
12660: return (&fixversion($map),$resid,&fixversion($url));
12661: }
12662:
12663: sub fixversion {
12664: my $fn=shift;
12665: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12666: my %bighash;
12667: my $uri=&clutter($fn);
12668: my $key=$env{'request.course.id'}.'_'.$uri;
12669: # is this cached?
12670: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12671: if (defined($cached)) { return $result; }
12672: # unfortunately not cached, or expired
12673: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12674: &GDBM_READER(),0640)) {
12675: if ($bighash{'version_'.$uri}) {
12676: my $version=$bighash{'version_'.$uri};
12677: unless (($version eq 'mostrecent') ||
12678: ($version==&getversion($uri))) {
12679: $uri=~s/\.(\w+)$/\.$version\.$1/;
12680: }
12681: }
12682: untie %bighash;
12683: }
12684: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12685: }
12686:
12687: sub deversion {
12688: my $url=shift;
12689: $url=~s/\.\d+\.(\w+)$/\.$1/;
12690: return $url;
12691: }
12692:
12693: # ------------------------------------------------------ Return symb list entry
12694:
12695: sub symbread {
12696: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12697: my $cache_str='request.symbread.cached.'.$thisfn;
12698: if (defined($env{$cache_str})) {
12699: if ($ignorecachednull) {
12700: return $env{$cache_str} unless ($env{$cache_str} eq '');
12701: } else {
12702: return $env{$cache_str};
12703: }
12704: }
12705: # no filename provided? try from environment
12706: unless ($thisfn) {
12707: if ($env{'request.symb'}) {
12708: return $env{$cache_str}=&symbclean($env{'request.symb'});
12709: }
12710: $thisfn=$env{'request.filename'};
12711: }
12712: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12713: # is that filename actually a symb? Verify, clean, and return
12714: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12715: if (&symbverify($thisfn,$1)) {
12716: return $env{$cache_str}=&symbclean($thisfn);
12717: }
12718: }
12719: $thisfn=declutter($thisfn);
12720: my %hash;
12721: my %bighash;
12722: my $syval='';
12723: if (($env{'request.course.fn'}) && ($thisfn)) {
12724: my $targetfn = $thisfn;
12725: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12726: $targetfn = 'adm/wrapper/'.$thisfn;
12727: }
12728: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12729: $targetfn=$1;
12730: }
12731: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12732: &GDBM_READER(),0640)) {
12733: $syval=$hash{$targetfn};
12734: untie(%hash);
12735: }
12736: # ---------------------------------------------------------- There was an entry
12737: if ($syval) {
12738: #unless ($syval=~/\_\d+$/) {
12739: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12740: #&appenv({'request.ambiguous' => $thisfn});
12741: #return $env{$cache_str}='';
12742: #}
12743: #$syval.=$1;
12744: #}
12745: } else {
12746: # ------------------------------------------------------- Was not in symb table
12747: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12748: &GDBM_READER(),0640)) {
12749: # ---------------------------------------------- Get ID(s) for current resource
12750: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12751: unless ($ids) {
12752: $ids=$bighash{'ids_/'.$thisfn};
12753: }
12754: unless ($ids) {
12755: # alias?
12756: $ids=$bighash{'mapalias_'.$thisfn};
12757: }
12758: if ($ids) {
12759: # ------------------------------------------------------------------- Has ID(s)
12760: my @possibilities=split(/\,/,$ids);
12761: if ($#possibilities==0) {
12762: # ----------------------------------------------- There is only one possibility
12763: my ($mapid,$resid)=split(/\./,$ids);
12764: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12765: $resid,$thisfn);
12766: if (ref($possibles) eq 'HASH') {
12767: $possibles->{$syval} = 1;
12768: }
12769: if ($checkforblock) {
12770: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12771: if (@blockers) {
12772: $syval = '';
12773: return;
12774: }
12775: }
12776: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12777: # ------------------------------------------ There is more than one possibility
12778: my $realpossible=0;
12779: foreach my $id (@possibilities) {
12780: my $file=$bighash{'src_'.$id};
12781: my $canaccess;
12782: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12783: $canaccess = 1;
12784: } else {
12785: $canaccess = &allowed('bre',$file);
12786: }
12787: if ($canaccess) {
12788: my ($mapid,$resid)=split(/\./,$id);
12789: if ($bighash{'map_type_'.$mapid} ne 'page') {
12790: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12791: $resid,$thisfn);
12792: if (ref($possibles) eq 'HASH') {
12793: $possibles->{$syval} = 1;
12794: }
12795: if ($checkforblock) {
12796: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12797: unless (@blockers > 0) {
12798: $syval = $poss_syval;
12799: $realpossible++;
12800: }
12801: } else {
12802: $syval = $poss_syval;
12803: $realpossible++;
12804: }
12805: }
12806: }
12807: }
12808: if ($realpossible!=1) { $syval=''; }
12809: } else {
12810: $syval='';
12811: }
12812: }
12813: untie(%bighash);
12814: }
12815: }
12816: if ($syval) {
12817: return $env{$cache_str}=$syval;
12818: }
12819: }
12820: &appenv({'request.ambiguous' => $thisfn});
12821: return $env{$cache_str}='';
12822: }
12823:
12824: # ---------------------------------------------------------- Return random seed
12825:
12826: sub numval {
12827: my $txt=shift;
12828: $txt=~tr/A-J/0-9/;
12829: $txt=~tr/a-j/0-9/;
12830: $txt=~tr/K-T/0-9/;
12831: $txt=~tr/k-t/0-9/;
12832: $txt=~tr/U-Z/0-5/;
12833: $txt=~tr/u-z/0-5/;
12834: $txt=~s/\D//g;
12835: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12836: return int($txt);
12837: }
12838:
12839: sub numval2 {
12840: my $txt=shift;
12841: $txt=~tr/A-J/0-9/;
12842: $txt=~tr/a-j/0-9/;
12843: $txt=~tr/K-T/0-9/;
12844: $txt=~tr/k-t/0-9/;
12845: $txt=~tr/U-Z/0-5/;
12846: $txt=~tr/u-z/0-5/;
12847: $txt=~s/\D//g;
12848: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12849: my $total;
12850: foreach my $val (@txts) { $total+=$val; }
12851: if ($_64bit) { if ($total > 2**32) { return -1; } }
12852: return int($total);
12853: }
12854:
12855: sub numval3 {
12856: use integer;
12857: my $txt=shift;
12858: $txt=~tr/A-J/0-9/;
12859: $txt=~tr/a-j/0-9/;
12860: $txt=~tr/K-T/0-9/;
12861: $txt=~tr/k-t/0-9/;
12862: $txt=~tr/U-Z/0-5/;
12863: $txt=~tr/u-z/0-5/;
12864: $txt=~s/\D//g;
12865: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12866: my $total;
12867: foreach my $val (@txts) { $total+=$val; }
12868: if ($_64bit) { $total=(($total<<32)>>32); }
12869: return $total;
12870: }
12871:
12872: sub digest {
12873: my ($data)=@_;
12874: my $digest=&Digest::MD5::md5($data);
12875: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12876: my ($e,$f);
12877: {
12878: use integer;
12879: $e=($a+$b);
12880: $f=($c+$d);
12881: if ($_64bit) {
12882: $e=(($e<<32)>>32);
12883: $f=(($f<<32)>>32);
12884: }
12885: }
12886: if (wantarray) {
12887: return ($e,$f);
12888: } else {
12889: my $g;
12890: {
12891: use integer;
12892: $g=($e+$f);
12893: if ($_64bit) {
12894: $g=(($g<<32)>>32);
12895: }
12896: }
12897: return $g;
12898: }
12899: }
12900:
12901: sub latest_rnd_algorithm_id {
12902: return '64bit5';
12903: }
12904:
12905: sub get_rand_alg {
12906: my ($courseid)=@_;
12907: if (!$courseid) { $courseid=(&whichuser())[1]; }
12908: if ($courseid) {
12909: return $env{"course.$courseid.rndseed"};
12910: }
12911: return &latest_rnd_algorithm_id();
12912: }
12913:
12914: sub validCODE {
12915: my ($CODE)=@_;
12916: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12917: return 0;
12918: }
12919:
12920: sub getCODE {
12921: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12922: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12923: defined($Apache::lonhomework::parsing_a_task) ) &&
12924: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12925: return $Apache::lonhomework::history{'resource.CODE'};
12926: }
12927: return undef;
12928: }
12929: #
12930: # Determines the random seed for a specific context:
12931: #
12932: # parameters:
12933: # symb - in course context the symb for the seed.
12934: # course_id - The course id of the form domain_coursenum.
12935: # domain - Domain for the user.
12936: # course - Course for the user.
12937: # cenv - environment of the course.
12938: #
12939: # NOTE:
12940: # All parameters are picked out of the environment if missing
12941: # or not defined.
12942: # If a symb cannot be determined the current time is used instead.
12943: #
12944: # For a given well defined symb, courside, domain, username,
12945: # and course environment, the seed is reproducible.
12946: #
12947: sub rndseed {
12948: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12949: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12950: if (!defined($symb)) {
12951: unless ($symb=$wsymb) { return time; }
12952: }
12953: if (!defined $courseid) {
12954: $courseid=$wcourseid;
12955: }
12956: if (!defined $domain) { $domain=$wdomain; }
12957: if (!defined $username) { $username=$wusername }
12958:
12959: my $which;
12960: if (defined($cenv->{'rndseed'})) {
12961: $which = $cenv->{'rndseed'};
12962: } else {
12963: $which =&get_rand_alg($courseid);
12964: }
12965: if (defined(&getCODE())) {
12966:
12967: if ($which eq '64bit5') {
12968: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12969: } elsif ($which eq '64bit4') {
12970: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12971: } else {
12972: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12973: }
12974: } elsif ($which eq '64bit5') {
12975: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12976: } elsif ($which eq '64bit4') {
12977: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12978: } elsif ($which eq '64bit3') {
12979: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12980: } elsif ($which eq '64bit2') {
12981: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12982: } elsif ($which eq '64bit') {
12983: return &rndseed_64bit($symb,$courseid,$domain,$username);
12984: }
12985: return &rndseed_32bit($symb,$courseid,$domain,$username);
12986: }
12987:
12988: sub rndseed_32bit {
12989: my ($symb,$courseid,$domain,$username)=@_;
12990: {
12991: use integer;
12992: my $symbchck=unpack("%32C*",$symb) << 27;
12993: my $symbseed=numval($symb) << 22;
12994: my $namechck=unpack("%32C*",$username) << 17;
12995: my $nameseed=numval($username) << 12;
12996: my $domainseed=unpack("%32C*",$domain) << 7;
12997: my $courseseed=unpack("%32C*",$courseid);
12998: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12999: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13000: #&logthis("rndseed :$num:$symb");
13001: if ($_64bit) { $num=(($num<<32)>>32); }
13002: return $num;
13003: }
13004: }
13005:
13006: sub rndseed_64bit {
13007: my ($symb,$courseid,$domain,$username)=@_;
13008: {
13009: use integer;
13010: my $symbchck=unpack("%32S*",$symb) << 21;
13011: my $symbseed=numval($symb) << 10;
13012: my $namechck=unpack("%32S*",$username);
13013:
13014: my $nameseed=numval($username) << 21;
13015: my $domainseed=unpack("%32S*",$domain) << 10;
13016: my $courseseed=unpack("%32S*",$courseid);
13017:
13018: my $num1=$symbchck+$symbseed+$namechck;
13019: my $num2=$nameseed+$domainseed+$courseseed;
13020: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13021: #&logthis("rndseed :$num:$symb");
13022: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13023: return "$num1,$num2";
13024: }
13025: }
13026:
13027: sub rndseed_64bit2 {
13028: my ($symb,$courseid,$domain,$username)=@_;
13029: {
13030: use integer;
13031: # strings need to be an even # of cahracters long, it it is odd the
13032: # last characters gets thrown away
13033: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13034: my $symbseed=numval($symb) << 10;
13035: my $namechck=unpack("%32S*",$username.' ');
13036:
13037: my $nameseed=numval($username) << 21;
13038: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13039: my $courseseed=unpack("%32S*",$courseid.' ');
13040:
13041: my $num1=$symbchck+$symbseed+$namechck;
13042: my $num2=$nameseed+$domainseed+$courseseed;
13043: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13044: #&logthis("rndseed :$num:$symb");
13045: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13046: return "$num1,$num2";
13047: }
13048: }
13049:
13050: sub rndseed_64bit3 {
13051: my ($symb,$courseid,$domain,$username)=@_;
13052: {
13053: use integer;
13054: # strings need to be an even # of cahracters long, it it is odd the
13055: # last characters gets thrown away
13056: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13057: my $symbseed=numval2($symb) << 10;
13058: my $namechck=unpack("%32S*",$username.' ');
13059:
13060: my $nameseed=numval2($username) << 21;
13061: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13062: my $courseseed=unpack("%32S*",$courseid.' ');
13063:
13064: my $num1=$symbchck+$symbseed+$namechck;
13065: my $num2=$nameseed+$domainseed+$courseseed;
13066: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13067: #&logthis("rndseed :$num1:$num2:$_64bit");
13068: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13069:
13070: return "$num1:$num2";
13071: }
13072: }
13073:
13074: sub rndseed_64bit4 {
13075: my ($symb,$courseid,$domain,$username)=@_;
13076: {
13077: use integer;
13078: # strings need to be an even # of cahracters long, it it is odd the
13079: # last characters gets thrown away
13080: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13081: my $symbseed=numval3($symb) << 10;
13082: my $namechck=unpack("%32S*",$username.' ');
13083:
13084: my $nameseed=numval3($username) << 21;
13085: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13086: my $courseseed=unpack("%32S*",$courseid.' ');
13087:
13088: my $num1=$symbchck+$symbseed+$namechck;
13089: my $num2=$nameseed+$domainseed+$courseseed;
13090: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13091: #&logthis("rndseed :$num1:$num2:$_64bit");
13092: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13093:
13094: return "$num1:$num2";
13095: }
13096: }
13097:
13098: sub rndseed_64bit5 {
13099: my ($symb,$courseid,$domain,$username)=@_;
13100: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13101: return "$num1:$num2";
13102: }
13103:
13104: sub rndseed_CODE_64bit {
13105: my ($symb,$courseid,$domain,$username)=@_;
13106: {
13107: use integer;
13108: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13109: my $symbseed=numval2($symb);
13110: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13111: my $CODEseed=numval(&getCODE());
13112: my $courseseed=unpack("%32S*",$courseid.' ');
13113: my $num1=$symbseed+$CODEchck;
13114: my $num2=$CODEseed+$courseseed+$symbchck;
13115: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13116: #&logthis("rndseed :$num1:$num2:$symb");
13117: if ($_64bit) { $num1=(($num1<<32)>>32); }
13118: if ($_64bit) { $num2=(($num2<<32)>>32); }
13119: return "$num1:$num2";
13120: }
13121: }
13122:
13123: sub rndseed_CODE_64bit4 {
13124: my ($symb,$courseid,$domain,$username)=@_;
13125: {
13126: use integer;
13127: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13128: my $symbseed=numval3($symb);
13129: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13130: my $CODEseed=numval3(&getCODE());
13131: my $courseseed=unpack("%32S*",$courseid.' ');
13132: my $num1=$symbseed+$CODEchck;
13133: my $num2=$CODEseed+$courseseed+$symbchck;
13134: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13135: #&logthis("rndseed :$num1:$num2:$symb");
13136: if ($_64bit) { $num1=(($num1<<32)>>32); }
13137: if ($_64bit) { $num2=(($num2<<32)>>32); }
13138: return "$num1:$num2";
13139: }
13140: }
13141:
13142: sub rndseed_CODE_64bit5 {
13143: my ($symb,$courseid,$domain,$username)=@_;
13144: my $code = &getCODE();
13145: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13146: return "$num1:$num2";
13147: }
13148:
13149: sub setup_random_from_rndseed {
13150: my ($rndseed)=@_;
13151: if ($rndseed =~/([,:])/) {
13152: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13153: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13154: &Math::Random::random_set_seed_from_phrase($rndseed);
13155: } else {
13156: &Math::Random::random_set_seed($num1,$num2);
13157: }
13158: } else {
13159: &Math::Random::random_set_seed_from_phrase($rndseed);
13160: }
13161: }
13162:
13163: sub latest_receipt_algorithm_id {
13164: return 'receipt3';
13165: }
13166:
13167: sub recunique {
13168: my $fucourseid=shift;
13169: my $unique;
13170: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13171: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13172: $unique=$env{"course.$fucourseid.internal.encseed"};
13173: } else {
13174: $unique=$perlvar{'lonReceipt'};
13175: }
13176: return unpack("%32C*",$unique);
13177: }
13178:
13179: sub recprefix {
13180: my $fucourseid=shift;
13181: my $prefix;
13182: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13183: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13184: $prefix=$env{"course.$fucourseid.internal.encpref"};
13185: } else {
13186: $prefix=$perlvar{'lonHostID'};
13187: }
13188: return unpack("%32C*",$prefix);
13189: }
13190:
13191: sub ireceipt {
13192: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13193:
13194: my $return =&recprefix($fucourseid).'-';
13195:
13196: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13197: $env{'request.state'} eq 'construct') {
13198: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13199: return $return;
13200: }
13201:
13202: my $cuname=unpack("%32C*",$funame);
13203: my $cudom=unpack("%32C*",$fudom);
13204: my $cucourseid=unpack("%32C*",$fucourseid);
13205: my $cusymb=unpack("%32C*",$fusymb);
13206: my $cunique=&recunique($fucourseid);
13207: my $cpart=unpack("%32S*",$part);
13208: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13209:
13210: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13211:
13212: $return.= ($cunique%$cuname+
13213: $cunique%$cudom+
13214: $cusymb%$cuname+
13215: $cusymb%$cudom+
13216: $cucourseid%$cuname+
13217: $cucourseid%$cudom+
13218: $cpart%$cuname+
13219: $cpart%$cudom);
13220: } else {
13221: $return.= ($cunique%$cuname+
13222: $cunique%$cudom+
13223: $cusymb%$cuname+
13224: $cusymb%$cudom+
13225: $cucourseid%$cuname+
13226: $cucourseid%$cudom);
13227: }
13228: return $return;
13229: }
13230:
13231: sub receipt {
13232: my ($part)=@_;
13233: my ($symb,$courseid,$domain,$name) = &whichuser();
13234: return &ireceipt($name,$domain,$courseid,$symb,$part);
13235: }
13236:
13237: sub whichuser {
13238: my ($passedsymb)=@_;
13239: my ($symb,$courseid,$domain,$name,$publicuser);
13240: if (defined($env{'form.grade_symb'})) {
13241: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13242: my $allowed=&allowed('vgr',$tmp_courseid);
13243: if (!$allowed &&
13244: exists($env{'request.course.sec'}) &&
13245: $env{'request.course.sec'} !~ /^\s*$/) {
13246: $allowed=&allowed('vgr',$tmp_courseid.
13247: '/'.$env{'request.course.sec'});
13248: }
13249: if ($allowed) {
13250: ($symb)=&get_env_multiple('form.grade_symb');
13251: $courseid=$tmp_courseid;
13252: ($domain)=&get_env_multiple('form.grade_domain');
13253: ($name)=&get_env_multiple('form.grade_username');
13254: return ($symb,$courseid,$domain,$name,$publicuser);
13255: }
13256: }
13257: if (!$passedsymb) {
13258: $symb=&symbread();
13259: } else {
13260: $symb=$passedsymb;
13261: }
13262: $courseid=$env{'request.course.id'};
13263: $domain=$env{'user.domain'};
13264: $name=$env{'user.name'};
13265: if ($name eq 'public' && $domain eq 'public') {
13266: if (!defined($env{'form.username'})) {
13267: $env{'form.username'}.=time.rand(10000000);
13268: }
13269: $name.=$env{'form.username'};
13270: }
13271: return ($symb,$courseid,$domain,$name,$publicuser);
13272:
13273: }
13274:
13275: # ------------------------------------------------------------ Serves up a file
13276: # returns either the contents of the file or
13277: # -1 if the file doesn't exist
13278: #
13279: # if the target is a file that was uploaded via DOCS,
13280: # a check will be made to see if a current copy exists on the local server,
13281: # if it does this will be served, otherwise a copy will be retrieved from
13282: # the home server for the course and stored in /home/httpd/html/userfiles on
13283: # the local server.
13284:
13285: sub getfile {
13286: my ($file) = @_;
13287: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13288: &repcopy($file);
13289: return &readfile($file);
13290: }
13291:
13292: sub repcopy_userfile {
13293: my ($file)=@_;
13294: my $londocroot = $perlvar{'lonDocRoot'};
13295: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13296: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13297: my ($cdom,$cnum,$filename) =
13298: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13299: my $uri="/uploaded/$cdom/$cnum/$filename";
13300: if (-e "$file") {
13301: # we already have a local copy, check it out
13302: my @fileinfo = stat($file);
13303: my $rtncode;
13304: my $info;
13305: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13306: if ($lwpresp ne 'ok') {
13307: # there is no such file anymore, even though we had a local copy
13308: if ($rtncode eq '404') {
13309: unlink($file);
13310: }
13311: return -1;
13312: }
13313: if ($info < $fileinfo[9]) {
13314: # nice, the file we have is up-to-date, just say okay
13315: return 'ok';
13316: } else {
13317: # the file is outdated, get rid of it
13318: unlink($file);
13319: }
13320: }
13321: # one way or the other, at this point, we don't have the file
13322: # construct the correct path for the file
13323: my @parts = ($cdom,$cnum);
13324: if ($filename =~ m|^(.+)/[^/]+$|) {
13325: push @parts, split(/\//,$1);
13326: }
13327: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13328: foreach my $part (@parts) {
13329: $path .= '/'.$part;
13330: if (!-e $path) {
13331: mkdir($path,0770);
13332: }
13333: }
13334: # now the path exists for sure
13335: # get a user agent
13336: my $transferfile=$file.'.in.transfer';
13337: # FIXME: this should flock
13338: if (-e $transferfile) { return 'ok'; }
13339: my $request;
13340: $uri=~s/^\///;
13341: my $homeserver = &homeserver($cnum,$cdom);
13342: my $protocol = $protocol{$homeserver};
13343: $protocol = 'http' if ($protocol ne 'https');
13344: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
13345: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13346: # did it work?
13347: if ($response->is_error()) {
13348: unlink($transferfile);
13349: &logthis("Userfile repcopy failed for $uri");
13350: return -1;
13351: }
13352: # worked, rename the transfer file
13353: rename($transferfile,$file);
13354: return 'ok';
13355: }
13356:
13357: sub tokenwrapper {
13358: my $uri=shift;
13359: $uri=~s|^https?\://([^/]+)||;
13360: $uri=~s|^/||;
13361: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13362: my $token=$1;
13363: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13364: if ($udom && $uname && $file) {
13365: $file=~s|(\?\.*)*$||;
13366: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13367: my $homeserver = &homeserver($uname,$udom);
13368: my $protocol = $protocol{$homeserver};
13369: $protocol = 'http' if ($protocol ne 'https');
13370: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
13371: (($uri=~/\?/)?'&':'?').'token='.$token.
13372: '&tokenissued='.$perlvar{'lonHostID'};
13373: } else {
13374: return '/adm/notfound.html';
13375: }
13376: }
13377:
13378: # call with reqtype HEAD: get last modification time
13379: # call with reqtype GET: get the file contents
13380: # Do not call this with reqtype GET for large files! It loads everything into memory
13381: #
13382: sub getuploaded {
13383: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13384: $uri=~s/^\///;
13385: my $homeserver = &homeserver($cnum,$cdom);
13386: my $protocol = $protocol{$homeserver};
13387: $protocol = 'http' if ($protocol ne 'https');
13388: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13389: my $request=new HTTP::Request($reqtype,$uri);
13390: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13391: $$rtncode = $response->code;
13392: if (! $response->is_success()) {
13393: return 'failed';
13394: }
13395: if ($reqtype eq 'HEAD') {
13396: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13397: } elsif ($reqtype eq 'GET') {
13398: $$info = $response->content;
13399: }
13400: return 'ok';
13401: }
13402:
13403: sub readfile {
13404: my $file = shift;
13405: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13406: my $fh;
13407: open($fh,"<",$file);
13408: my $a='';
13409: while (my $line = <$fh>) { $a .= $line; }
13410: return $a;
13411: }
13412:
13413: sub filelocation {
13414: my ($dir,$file) = @_;
13415: my $location;
13416: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13417:
13418: if ($file =~ m-^/adm/-) {
13419: $file=~s-^/adm/wrapper/-/-;
13420: $file=~s-^/adm/coursedocs/showdoc/-/-;
13421: }
13422:
13423: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13424: $location = $file;
13425: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13426: my ($udom,$uname,$filename)=
13427: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13428: my $home=&homeserver($uname,$udom);
13429: my $is_me=0;
13430: my @ids=¤t_machine_ids();
13431: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13432: if ($is_me) {
13433: $location=propath($udom,$uname).'/userfiles/'.$filename;
13434: } else {
13435: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13436: $udom.'/'.$uname.'/'.$filename;
13437: }
13438: } elsif ($file =~ m-^/adm/-) {
13439: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13440: } else {
13441: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13442: $file=~s:^/(res|priv)/:/:;
13443: my $space=$1;
13444: if ( !( $file =~ m:^/:) ) {
13445: $location = $dir. '/'.$file;
13446: } else {
13447: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13448: }
13449: }
13450: $location=~s://+:/:g; # remove duplicate /
13451: while ($location=~m{/\.\./}) {
13452: if ($location =~ m{/[^/]+/\.\./}) {
13453: $location=~ s{/[^/]+/\.\./}{/}g;
13454: } else {
13455: $location=~ s{/\.\./}{/}g;
13456: }
13457: } #remove dir/..
13458: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13459: return $location;
13460: }
13461:
13462: sub hreflocation {
13463: my ($dir,$file)=@_;
13464: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13465: $file=filelocation($dir,$file);
13466: } elsif ($file=~m-^/adm/-) {
13467: $file=~s-^/adm/wrapper/-/-;
13468: $file=~s-^/adm/coursedocs/showdoc/-/-;
13469: }
13470: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13471: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13472: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13473: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13474: {/uploaded/$1/$2/}x;
13475: }
13476: if ($file=~ m{^/userfiles/}) {
13477: $file =~ s{^/userfiles/}{/uploaded/};
13478: }
13479: return $file;
13480: }
13481:
13482:
13483:
13484:
13485:
13486: sub current_machine_domains {
13487: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13488: }
13489:
13490: sub machine_domains {
13491: my ($hostname) = @_;
13492: my @domains;
13493: my %hostname = &all_hostnames();
13494: while( my($id, $name) = each(%hostname)) {
13495: # &logthis("-$id-$name-$hostname-");
13496: if ($hostname eq $name) {
13497: push(@domains,&host_domain($id));
13498: }
13499: }
13500: return @domains;
13501: }
13502:
13503: sub current_machine_ids {
13504: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13505: }
13506:
13507: sub machine_ids {
13508: my ($hostname) = @_;
13509: $hostname ||= &hostname($perlvar{'lonHostID'});
13510: my @ids;
13511: my %name_to_host = &all_names();
13512: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13513: return @{ $name_to_host{$hostname} };
13514: }
13515: return;
13516: }
13517:
13518: sub additional_machine_domains {
13519: my @domains;
13520: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13521: while( my $line = <$fh>) {
13522: $line =~ s/\s//g;
13523: push(@domains,$line);
13524: }
13525: return @domains;
13526: }
13527:
13528: sub default_login_domain {
13529: my $domain = $perlvar{'lonDefDomain'};
13530: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13531: foreach my $posdom (¤t_machine_domains(),
13532: &additional_machine_domains()) {
13533: if (lc($posdom) eq lc($testdomain)) {
13534: $domain=$posdom;
13535: last;
13536: }
13537: }
13538: return $domain;
13539: }
13540:
13541: # ------------------------------------------------------------- Declutters URLs
13542:
13543: sub declutter {
13544: my $thisfn=shift;
13545: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13546: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13547: $thisfn=~s{^/home/httpd/html}{};
13548: }
13549: $thisfn=~s/^\///;
13550: $thisfn=~s|^adm/wrapper/||;
13551: $thisfn=~s|^adm/coursedocs/showdoc/||;
13552: $thisfn=~s/^res\///;
13553: $thisfn=~s/^priv\///;
13554: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13555: $thisfn=~s/\?.+$//;
13556: }
13557: return $thisfn;
13558: }
13559:
13560: # ------------------------------------------------------------- Clutter up URLs
13561:
13562: sub clutter {
13563: my $thisfn='/'.&declutter(shift);
13564: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13565: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13566: $thisfn='/res'.$thisfn;
13567: }
13568: if ($thisfn !~m|^/adm|) {
13569: if ($thisfn =~ m|^/ext/|) {
13570: $thisfn='/adm/wrapper'.$thisfn;
13571: } else {
13572: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13573: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13574: if ($embstyle eq 'ssi'
13575: || ($embstyle eq 'hdn')
13576: || ($embstyle eq 'rat')
13577: || ($embstyle eq 'prv')
13578: || ($embstyle eq 'ign')) {
13579: #do nothing with these
13580: } elsif (($embstyle eq 'img')
13581: || ($embstyle eq 'emb')
13582: || ($embstyle eq 'wrp')) {
13583: $thisfn='/adm/wrapper'.$thisfn;
13584: } elsif ($embstyle eq 'unk'
13585: && $thisfn!~/\.(sequence|page)$/) {
13586: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13587: } else {
13588: # &logthis("Got a blank emb style");
13589: }
13590: }
13591: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13592: $thisfn='/adm/wrapper'.$thisfn;
13593: }
13594: return $thisfn;
13595: }
13596:
13597: sub clutter_with_no_wrapper {
13598: my $uri = &clutter(shift);
13599: if ($uri =~ m-^/adm/-) {
13600: $uri =~ s-^/adm/wrapper/-/-;
13601: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13602: }
13603: return $uri;
13604: }
13605:
13606: sub freeze_escape {
13607: my ($value)=@_;
13608: if (ref($value)) {
13609: $value=&nfreeze($value);
13610: return '__FROZEN__'.&escape($value);
13611: }
13612: return &escape($value);
13613: }
13614:
13615:
13616: sub thaw_unescape {
13617: my ($value)=@_;
13618: if ($value =~ /^__FROZEN__/) {
13619: substr($value,0,10,undef);
13620: $value=&unescape($value);
13621: return &thaw($value);
13622: }
13623: return &unescape($value);
13624: }
13625:
13626: sub correct_line_ends {
13627: my ($result)=@_;
13628: $$result =~s/\r\n/\n/mg;
13629: $$result =~s/\r/\n/mg;
13630: }
13631: # ================================================================ Main Program
13632:
13633: sub goodbye {
13634: &logthis("Starting Shut down");
13635: #not converted to using infrastruture and probably shouldn't be
13636: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13637: #converted
13638: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13639: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13640: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13641: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13642: #1.1 only
13643: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13644: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13645: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13646: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13647: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13648: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13649: &logthis(sprintf("%-20s is %s",'hits',$hits));
13650: &flushcourselogs();
13651: &logthis("Shutting down");
13652: }
13653:
13654: sub get_dns {
13655: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13656: if (!$ignore_cache) {
13657: my ($content,$cached)=
13658: &Apache::lonnet::is_cached_new('dns',$url);
13659: if ($cached) {
13660: &$func($content,$hashref);
13661: return;
13662: }
13663: }
13664:
13665: my %alldns;
13666: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13667: foreach my $dns (<$config>) {
13668: next if ($dns !~ /^\^(\S*)/x);
13669: my $line = $1;
13670: my ($host,$protocol) = split(/:/,$line);
13671: if ($protocol ne 'https') {
13672: $protocol = 'http';
13673: }
13674: $alldns{$host} = $protocol;
13675: }
13676: close($config);
13677: }
13678: while (%alldns) {
13679: my ($dns) = sort { $b cmp $a } keys(%alldns);
13680: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13681: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13682: delete($alldns{$dns});
13683: next if ($response->is_error());
13684: if ($url eq '/adm/dns/loncapaCRL') {
13685: return &$func($response);
13686: } else {
13687: my @content = split("\n",$response->content);
13688: unless ($nocache) {
13689: &do_cache_new('dns',$url,\@content,30*24*60*60);
13690: }
13691: &$func(\@content,$hashref);
13692: return;
13693: }
13694: }
13695: my $which = (split('/',$url,4))[3];
13696: if ($which eq 'loncapaCRL') {
13697: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13698: if (-e $diskfile) {
13699: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13700: } else {
13701: &logthis("unable to contact DNS, no on disk file $diskfile available");
13702: }
13703: } else {
13704: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13705: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13706: my @content = <$config>;
13707: close($config);
13708: &$func(\@content,$hashref);
13709: }
13710: }
13711: return;
13712: }
13713:
13714: # ------------------------------------------------------Get DNS checksums file
13715: sub parse_dns_checksums_tab {
13716: my ($lines,$hashref) = @_;
13717: my $lonhost = $perlvar{'lonHostID'};
13718: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13719: my $loncaparev = &get_server_loncaparev($machine_dom);
13720: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13721: my $webconfdir = '/etc/httpd/conf';
13722: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13723: $webconfdir = '/etc/apache2';
13724: } elsif ($distro =~ /^sles(\d+)$/) {
13725: if ($1 >= 10) {
13726: $webconfdir = '/etc/apache2';
13727: }
13728: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13729: if ($1 >= 10.0) {
13730: $webconfdir = '/etc/apache2';
13731: }
13732: }
13733: my ($release,$timestamp) = split(/\-/,$loncaparev);
13734: my (%chksum,%revnum);
13735: if (ref($lines) eq 'ARRAY') {
13736: chomp(@{$lines});
13737: my $version = shift(@{$lines});
13738: if ($version eq $release) {
13739: foreach my $line (@{$lines}) {
13740: my ($file,$version,$shasum) = split(/,/,$line);
13741: if ($file =~ m{^/etc/httpd/conf}) {
13742: if ($webconfdir eq '/etc/apache2') {
13743: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13744: }
13745: }
13746: $chksum{$file} = $shasum;
13747: $revnum{$file} = $version;
13748: }
13749: if (ref($hashref) eq 'HASH') {
13750: %{$hashref} = (
13751: sums => \%chksum,
13752: versions => \%revnum,
13753: );
13754: }
13755: }
13756: }
13757: return;
13758: }
13759:
13760: sub fetch_dns_checksums {
13761: my %checksums;
13762: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13763: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13764: my ($release,$timestamp) = split(/\-/,$loncaparev);
13765: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13766: \%checksums);
13767: return \%checksums;
13768: }
13769:
13770: sub fetch_crl_pemfile {
13771: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13772: }
13773:
13774: sub save_crl_pem {
13775: my ($response) = @_;
13776: my ($msg,$hadchanges);
13777: if (ref($response)) {
13778: my $now = time;
13779: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13780: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13781: if (open(my $fh,'>',"$tmpcrl")) {
13782: print $fh $response->content;
13783: close($fh);
13784: if (-e $lonca) {
13785: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13786: my $check = <PIPE>;
13787: close(PIPE);
13788: chomp($check);
13789: if ($check eq 'verify OK') {
13790: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13791: my $backup;
13792: if (-e $dest) {
13793: if (&File::Copy::move($dest,"$dest.bak")) {
13794: $backup = 'ok';
13795: }
13796: }
13797: if (&File::Copy::move($tmpcrl,$dest)) {
13798: $msg = 'ok';
13799: if ($backup) {
13800: my (%oldnums,%newnums);
13801: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13802: while (<PIPE>) {
13803: $oldnums{(split(/:/))[1]} = 1;
13804: }
13805: close(PIPE);
13806: }
13807: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13808: while(<PIPE>) {
13809: $newnums{(split(/:/))[1]} = 1;
13810: }
13811: close(PIPE);
13812: }
13813: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13814: unless (exists($oldnums{$key})) {
13815: $hadchanges = 1;
13816: last;
13817: }
13818: }
13819: unless ($hadchanges) {
13820: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13821: unless (exists($newnums{$key})) {
13822: $hadchanges = 1;
13823: last;
13824: }
13825: }
13826: }
13827: }
13828: }
13829: } else {
13830: unlink($tmpcrl);
13831: }
13832: } else {
13833: unlink($tmpcrl);
13834: }
13835: } else {
13836: unlink($tmpcrl);
13837: }
13838: }
13839: }
13840: return ($msg,$hadchanges);
13841: }
13842:
13843: # ------------------------------------------------------------ Read domain file
13844: {
13845: my $loaded;
13846: my %domain;
13847:
13848: sub parse_domain_tab {
13849: my ($lines) = @_;
13850: foreach my $line (@$lines) {
13851: next if ($line =~ /^(\#|\s*$ )/x);
13852:
13853: chomp($line);
13854: my ($name,@elements) = split(/:/,$line,9);
13855: my %this_domain;
13856: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13857: 'lang_def', 'city', 'longi', 'lati',
13858: 'primary') {
13859: $this_domain{$field} = shift(@elements);
13860: }
13861: $domain{$name} = \%this_domain;
13862: }
13863: }
13864:
13865: sub reset_domain_info {
13866: undef($loaded);
13867: undef(%domain);
13868: }
13869:
13870: sub load_domain_tab {
13871: my ($ignore_cache,$nocache) = @_;
13872: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13873: my $fh;
13874: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13875: my @lines = <$fh>;
13876: &parse_domain_tab(\@lines);
13877: }
13878: close($fh);
13879: $loaded = 1;
13880: }
13881:
13882: sub domain {
13883: &load_domain_tab() if (!$loaded);
13884:
13885: my ($name,$what) = @_;
13886: return if ( !exists($domain{$name}) );
13887:
13888: if (!$what) {
13889: return $domain{$name}{'description'};
13890: }
13891: return $domain{$name}{$what};
13892: }
13893:
13894: sub domain_info {
13895: &load_domain_tab() if (!$loaded);
13896: return %domain;
13897: }
13898:
13899: }
13900:
13901:
13902: # ------------------------------------------------------------- Read hosts file
13903: {
13904: my %hostname;
13905: my %hostdom;
13906: my %libserv;
13907: my $loaded;
13908: my %name_to_host;
13909: my %internetdom;
13910: my %LC_dns_serv;
13911:
13912: sub parse_hosts_tab {
13913: my ($file) = @_;
13914: foreach my $configline (@$file) {
13915: next if ($configline =~ /^(\#|\s*$ )/x);
13916: chomp($configline);
13917: if ($configline =~ /^\^/) {
13918: if ($configline =~ /^\^([\w.\-]+)/) {
13919: $LC_dns_serv{$1} = 1;
13920: }
13921: next;
13922: }
13923: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13924: $name=~s/\s//g;
13925: if ($id && $domain && $role && $name) {
13926: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13927: my $curr = $hostname{$id};
13928: my $skip;
13929: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13930: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13931: $skip = 1;
13932: } else {
13933: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13934: }
13935: }
13936: unless ($skip) {
13937: push(@{$name_to_host{$name}},$id);
13938: }
13939: } else {
13940: push(@{$name_to_host{$name}},$id);
13941: }
13942: $hostname{$id}=$name;
13943: $hostdom{$id}=$domain;
13944: if ($role eq 'library') { $libserv{$id}=$name; }
13945: if (defined($protocol)) {
13946: if ($protocol eq 'https') {
13947: $protocol{$id} = $protocol;
13948: } else {
13949: $protocol{$id} = 'http';
13950: }
13951: } else {
13952: $protocol{$id} = 'http';
13953: }
13954: if (defined($intdom)) {
13955: $internetdom{$id} = $intdom;
13956: }
13957: }
13958: }
13959: }
13960:
13961: sub reset_hosts_info {
13962: &purge_remembered();
13963: &reset_domain_info();
13964: &reset_hosts_ip_info();
13965: undef(%internetdom);
13966: undef(%name_to_host);
13967: undef(%hostname);
13968: undef(%hostdom);
13969: undef(%libserv);
13970: undef($loaded);
13971: }
13972:
13973: sub load_hosts_tab {
13974: my ($ignore_cache,$nocache) = @_;
13975: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13976: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
13977: my @config = <$config>;
13978: &parse_hosts_tab(\@config);
13979: close($config);
13980: $loaded=1;
13981: }
13982:
13983: sub hostname {
13984: &load_hosts_tab() if (!$loaded);
13985:
13986: my ($lonid) = @_;
13987: return $hostname{$lonid};
13988: }
13989:
13990: sub all_hostnames {
13991: &load_hosts_tab() if (!$loaded);
13992:
13993: return %hostname;
13994: }
13995:
13996: sub all_names {
13997: my ($ignore_cache,$nocache) = @_;
13998: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13999:
14000: return %name_to_host;
14001: }
14002:
14003: sub all_host_domain {
14004: &load_hosts_tab() if (!$loaded);
14005: return %hostdom;
14006: }
14007:
14008: sub all_host_intdom {
14009: &load_hosts_tab() if (!$loaded);
14010: return %internetdom;
14011: }
14012:
14013: sub is_library {
14014: &load_hosts_tab() if (!$loaded);
14015:
14016: return exists($libserv{$_[0]});
14017: }
14018:
14019: sub all_library {
14020: &load_hosts_tab() if (!$loaded);
14021:
14022: return %libserv;
14023: }
14024:
14025: sub unique_library {
14026: #2x reverse removes all hostnames that appear more than once
14027: my %unique = reverse &all_library();
14028: return reverse %unique;
14029: }
14030:
14031: sub get_servers {
14032: &load_hosts_tab() if (!$loaded);
14033:
14034: my ($domain,$type) = @_;
14035: my %possible_hosts = ($type eq 'library') ? %libserv
14036: : %hostname;
14037: my %result;
14038: if (ref($domain) eq 'ARRAY') {
14039: while ( my ($host,$hostname) = each(%possible_hosts)) {
14040: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14041: $result{$host} = $hostname;
14042: }
14043: }
14044: } else {
14045: while ( my ($host,$hostname) = each(%possible_hosts)) {
14046: if ($hostdom{$host} eq $domain) {
14047: $result{$host} = $hostname;
14048: }
14049: }
14050: }
14051: return %result;
14052: }
14053:
14054: sub get_unique_servers {
14055: my %unique = reverse &get_servers(@_);
14056: return reverse %unique;
14057: }
14058:
14059: sub host_domain {
14060: &load_hosts_tab() if (!$loaded);
14061:
14062: my ($lonid) = @_;
14063: return $hostdom{$lonid};
14064: }
14065:
14066: sub all_domains {
14067: &load_hosts_tab() if (!$loaded);
14068:
14069: my %seen;
14070: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14071: return @uniq;
14072: }
14073:
14074: sub internet_dom {
14075: &load_hosts_tab() if (!$loaded);
14076:
14077: my ($lonid) = @_;
14078: return $internetdom{$lonid};
14079: }
14080:
14081: sub is_LC_dns {
14082: &load_hosts_tab() if (!$loaded);
14083:
14084: my ($hostname) = @_;
14085: return exists($LC_dns_serv{$hostname});
14086: }
14087:
14088: }
14089:
14090: {
14091: my %iphost;
14092: my %name_to_ip;
14093: my %lonid_to_ip;
14094:
14095: sub get_hosts_from_ip {
14096: my ($ip) = @_;
14097: my %iphosts = &get_iphost();
14098: if (ref($iphosts{$ip})) {
14099: return @{$iphosts{$ip}};
14100: }
14101: return;
14102: }
14103:
14104: sub reset_hosts_ip_info {
14105: undef(%iphost);
14106: undef(%name_to_ip);
14107: undef(%lonid_to_ip);
14108: }
14109:
14110: sub get_host_ip {
14111: my ($lonid) = @_;
14112: if (exists($lonid_to_ip{$lonid})) {
14113: return $lonid_to_ip{$lonid};
14114: }
14115: my $name=&hostname($lonid);
14116: my $ip = gethostbyname($name);
14117: return if (!$ip || length($ip) ne 4);
14118: $ip=inet_ntoa($ip);
14119: $name_to_ip{$name} = $ip;
14120: $lonid_to_ip{$lonid} = $ip;
14121: return $ip;
14122: }
14123:
14124: sub get_iphost {
14125: my ($ignore_cache,$nocache) = @_;
14126:
14127: if (!$ignore_cache) {
14128: if (%iphost) {
14129: return %iphost;
14130: }
14131: my ($ip_info,$cached)=
14132: &Apache::lonnet::is_cached_new('iphost','iphost');
14133: if ($cached) {
14134: %iphost = %{$ip_info->[0]};
14135: %name_to_ip = %{$ip_info->[1]};
14136: %lonid_to_ip = %{$ip_info->[2]};
14137: return %iphost;
14138: }
14139: }
14140:
14141: # get yesterday's info for fallback
14142: my %old_name_to_ip;
14143: my ($ip_info,$cached)=
14144: &Apache::lonnet::is_cached_new('iphost','iphost');
14145: if ($cached) {
14146: %old_name_to_ip = %{$ip_info->[1]};
14147: }
14148:
14149: my %name_to_host = &all_names($ignore_cache,$nocache);
14150: foreach my $name (keys(%name_to_host)) {
14151: my $ip;
14152: if (!exists($name_to_ip{$name})) {
14153: $ip = gethostbyname($name);
14154: if (!$ip || length($ip) ne 4) {
14155: if (defined($old_name_to_ip{$name})) {
14156: $ip = $old_name_to_ip{$name};
14157: &logthis("Can't find $name defaulting to old $ip");
14158: } else {
14159: &logthis("Name $name no IP found");
14160: next;
14161: }
14162: } else {
14163: $ip=inet_ntoa($ip);
14164: }
14165: $name_to_ip{$name} = $ip;
14166: } else {
14167: $ip = $name_to_ip{$name};
14168: }
14169: foreach my $id (@{ $name_to_host{$name} }) {
14170: $lonid_to_ip{$id} = $ip;
14171: }
14172: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14173: }
14174: unless ($nocache) {
14175: &do_cache_new('iphost','iphost',
14176: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14177: 48*60*60);
14178: }
14179:
14180: return %iphost;
14181: }
14182:
14183: #
14184: # Given a DNS returns the loncapa host name for that DNS
14185: #
14186: sub host_from_dns {
14187: my ($dns) = @_;
14188: my @hosts;
14189: my $ip;
14190:
14191: if (exists($name_to_ip{$dns})) {
14192: $ip = $name_to_ip{$dns};
14193: }
14194: if (!$ip) {
14195: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14196: if (length($ip) == 4) {
14197: $ip = &IO::Socket::inet_ntoa($ip);
14198: }
14199: }
14200: if ($ip) {
14201: @hosts = get_hosts_from_ip($ip);
14202: return $hosts[0];
14203: }
14204: return undef;
14205: }
14206:
14207: sub get_internet_names {
14208: my ($lonid) = @_;
14209: return if ($lonid eq '');
14210: my ($idnref,$cached)=
14211: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14212: if ($cached) {
14213: return $idnref;
14214: }
14215: my $ip = &get_host_ip($lonid);
14216: my @hosts = &get_hosts_from_ip($ip);
14217: my %iphost = &get_iphost();
14218: my (@idns,%seen);
14219: foreach my $id (@hosts) {
14220: my $dom = &host_domain($id);
14221: my $prim_id = &domain($dom,'primary');
14222: my $prim_ip = &get_host_ip($prim_id);
14223: next if ($seen{$prim_ip});
14224: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14225: foreach my $id (@{$iphost{$prim_ip}}) {
14226: my $intdom = &internet_dom($id);
14227: unless (grep(/^\Q$intdom\E$/,@idns)) {
14228: push(@idns,$intdom);
14229: }
14230: }
14231: }
14232: $seen{$prim_ip} = 1;
14233: }
14234: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14235: }
14236:
14237: }
14238:
14239: sub all_loncaparevs {
14240: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14241: }
14242:
14243: # ---------------------------------------------------------- Read loncaparev table
14244: {
14245: sub load_loncaparevs {
14246: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14247: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14248: while (my $configline=<$config>) {
14249: chomp($configline);
14250: my ($hostid,$loncaparev)=split(/:/,$configline);
14251: $loncaparevs{$hostid}=$loncaparev;
14252: }
14253: close($config);
14254: }
14255: }
14256: }
14257: }
14258:
14259: # ---------------------------------------------------------- Read serverhostID table
14260: {
14261: sub load_serverhomeIDs {
14262: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14263: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14264: while (my $configline=<$config>) {
14265: chomp($configline);
14266: my ($name,$id)=split(/:/,$configline);
14267: $serverhomeIDs{$name}=$id;
14268: }
14269: close($config);
14270: }
14271: }
14272: }
14273: }
14274:
14275:
14276: BEGIN {
14277:
14278: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14279: unless ($readit) {
14280: {
14281: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14282: %perlvar = (%perlvar,%{$configvars});
14283: }
14284:
14285:
14286: # ------------------------------------------------------ Read spare server file
14287: {
14288: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14289:
14290: while (my $configline=<$config>) {
14291: chomp($configline);
14292: if ($configline) {
14293: my ($host,$type) = split(':',$configline,2);
14294: if (!defined($type) || $type eq '') { $type = 'default' };
14295: push(@{ $spareid{$type} }, $host);
14296: }
14297: }
14298: close($config);
14299: }
14300: # ------------------------------------------------------------ Read permissions
14301: {
14302: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14303:
14304: while (my $configline=<$config>) {
14305: chomp($configline);
14306: if ($configline) {
14307: my ($role,$perm)=split(/ /,$configline);
14308: if ($perm ne '') { $pr{$role}=$perm; }
14309: }
14310: }
14311: close($config);
14312: }
14313:
14314: # -------------------------------------------- Read plain texts for permissions
14315: {
14316: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14317:
14318: while (my $configline=<$config>) {
14319: chomp($configline);
14320: if ($configline) {
14321: my ($short,@plain)=split(/:/,$configline);
14322: %{$prp{$short}} = ();
14323: if (@plain > 0) {
14324: $prp{$short}{'std'} = $plain[0];
14325: for (my $i=1; $i<@plain; $i++) {
14326: $prp{$short}{'alt'.$i} = $plain[$i];
14327: }
14328: }
14329: }
14330: }
14331: close($config);
14332: }
14333:
14334: # ---------------------------------------------------------- Read package table
14335: {
14336: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14337:
14338: while (my $configline=<$config>) {
14339: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14340: chomp($configline);
14341: my ($short,$plain)=split(/:/,$configline);
14342: my ($pack,$name)=split(/\&/,$short);
14343: if ($plain ne '') {
14344: $packagetab{$pack.'&'.$name.'&name'}=$name;
14345: $packagetab{$short}=$plain;
14346: }
14347: }
14348: close($config);
14349: }
14350:
14351: # ---------------------------------------------------------- Read loncaparev table
14352:
14353: &load_loncaparevs();
14354:
14355: # ---------------------------------------------------------- Read serverhostID table
14356:
14357: &load_serverhomeIDs();
14358:
14359: # ---------------------------------------------------------- Read releaseslist XML
14360: {
14361: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14362: if (-e $file) {
14363: my $parser = HTML::LCParser->new($file);
14364: while (my $token = $parser->get_token()) {
14365: if ($token->[0] eq 'S') {
14366: my $item = $token->[1];
14367: my $name = $token->[2]{'name'};
14368: my $value = $token->[2]{'value'};
14369: my $valuematch = $token->[2]{'valuematch'};
14370: my $namematch = $token->[2]{'namematch'};
14371: if ($item eq 'parameter') {
14372: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14373: my $release = $parser->get_text();
14374: $release =~ s/(^\s*|\s*$ )//gx;
14375: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14376: }
14377: } elsif ($item ne '' && $name ne '') {
14378: my $release = $parser->get_text();
14379: $release =~ s/(^\s*|\s*$ )//gx;
14380: $needsrelease{$item.':'.$name.':'.$value} = $release;
14381: }
14382: }
14383: }
14384: }
14385: }
14386:
14387: # ---------------------------------------------------------- Read managers table
14388: {
14389: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14390: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14391: while (my $configline=<$config>) {
14392: chomp($configline);
14393: next if ($configline =~ /^\#/);
14394: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14395: $managerstab{$configline} = 1;
14396: }
14397: }
14398: close($config);
14399: }
14400: }
14401: }
14402:
14403: # ------------- set up temporary directory
14404: {
14405: $tmpdir = LONCAPA::tempdir();
14406:
14407: }
14408:
14409: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14410: 'compress_threshold'=> 20_000,
14411: });
14412:
14413: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14414: $dumpcount=0;
14415: $locknum=0;
14416:
14417: &logtouch();
14418: &logthis('<font color="yellow">INFO: Read configuration</font>');
14419: $readit=1;
14420: {
14421: use integer;
14422: my $test=(2**32)+1;
14423: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14424: &logthis(" Detected 64bit platform ($_64bit)");
14425: }
14426: }
14427: }
14428:
14429: 1;
14430: __END__
14431:
14432: =pod
14433:
14434: =head1 NAME
14435:
14436: Apache::lonnet - Subroutines to ask questions about things in the network.
14437:
14438: =head1 SYNOPSIS
14439:
14440: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14441:
14442: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14443:
14444: Common parameters:
14445:
14446: =over 4
14447:
14448: =item *
14449:
14450: $uname : an internal username (if $cname expecting a course Id specifically)
14451:
14452: =item *
14453:
14454: $udom : a domain (if $cdom expecting a course's domain specifically)
14455:
14456: =item *
14457:
14458: $symb : a resource instance identifier
14459:
14460: =item *
14461:
14462: $namespace : the name of a .db file that contains the data needed or
14463: being set.
14464:
14465: =back
14466:
14467: =head1 OVERVIEW
14468:
14469: lonnet provides subroutines which interact with the
14470: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14471: about classes, users, and resources.
14472:
14473: For many of these objects you can also use this to store data about
14474: them or modify them in various ways.
14475:
14476: =head2 Symbs
14477:
14478: To identify a specific instance of a resource, LON-CAPA uses symbols
14479: or "symbs"X<symb>. These identifiers are built from the URL of the
14480: map, the resource number of the resource in the map, and the URL of
14481: the resource itself. The latter is somewhat redundant, but might help
14482: if maps change.
14483:
14484: An example is
14485:
14486: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14487:
14488: The respective map entry is
14489:
14490: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14491: title="Problem 2">
14492: </resource>
14493:
14494: Symbs are used by the random number generator, as well as to store and
14495: restore data specific to a certain instance of for example a problem.
14496:
14497: =head2 Storing And Retrieving Data
14498:
14499: X<store()>X<cstore()>X<restore()>Three of the most important functions
14500: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14501: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14502: is is the non-critical message twin of cstore. These functions are for
14503: handlers to store a perl hash to a user's permanent data space in an
14504: easy manner, and to retrieve it again on another call. It is expected
14505: that a handler would use this once at the beginning to retrieve data,
14506: and then again once at the end to send only the new data back.
14507:
14508: The data is stored in the user's data directory on the user's
14509: homeserver under the ID of the course.
14510:
14511: The hash that is returned by restore will have all of the previous
14512: value for all of the elements of the hash.
14513:
14514: Example:
14515:
14516: #creating a hash
14517: my %hash;
14518: $hash{'foo'}='bar';
14519:
14520: #storing it
14521: &Apache::lonnet::cstore(\%hash);
14522:
14523: #changing a value
14524: $hash{'foo'}='notbar';
14525:
14526: #adding a new value
14527: $hash{'bar'}='foo';
14528: &Apache::lonnet::cstore(\%hash);
14529:
14530: #retrieving the hash
14531: my %history=&Apache::lonnet::restore();
14532:
14533: #print the hash
14534: foreach my $key (sort(keys(%history))) {
14535: print("\%history{$key} = $history{$key}");
14536: }
14537:
14538: Will print out:
14539:
14540: %history{1:foo} = bar
14541: %history{1:keys} = foo:timestamp
14542: %history{1:timestamp} = 990455579
14543: %history{2:bar} = foo
14544: %history{2:foo} = notbar
14545: %history{2:keys} = foo:bar:timestamp
14546: %history{2:timestamp} = 990455580
14547: %history{bar} = foo
14548: %history{foo} = notbar
14549: %history{timestamp} = 990455580
14550: %history{version} = 2
14551:
14552: Note that the special hash entries C<keys>, C<version> and
14553: C<timestamp> were added to the hash. C<version> will be equal to the
14554: total number of versions of the data that have been stored. The
14555: C<timestamp> attribute will be the UNIX time the hash was
14556: stored. C<keys> is available in every historical section to list which
14557: keys were added or changed at a specific historical revision of a
14558: hash.
14559:
14560: B<Warning>: do not store the hash that restore returns directly. This
14561: will cause a mess since it will restore the historical keys as if the
14562: were new keys. I.E. 1:foo will become 1:1:foo etc.
14563:
14564: Calling convention:
14565:
14566: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14567: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14568:
14569: For more detailed information, see lonnet specific documentation.
14570:
14571: =head1 RETURN MESSAGES
14572:
14573: =over 4
14574:
14575: =item * B<con_lost>: unable to contact remote host
14576:
14577: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14578: when the connection is brought back up
14579:
14580: =item * B<con_failed>: unable to contact remote host and unable to save message
14581: for later delivery
14582:
14583: =item * B<error:>: an error a occurred, a description of the error follows the :
14584:
14585: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14586: that was requested
14587:
14588: =back
14589:
14590: =head1 PUBLIC SUBROUTINES
14591:
14592: =head2 Session Environment Functions
14593:
14594: =over 4
14595:
14596: =item *
14597: X<appenv()>
14598: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14599: the user envirnoment file, and will be restored for each access this
14600: user makes during this session, also modifies the %env for the current
14601: process. Optional rolesarrayref - if defined contains a reference to an array
14602: of roles which are exempt from the restriction on modifying user.role entries
14603: in the user's environment.db and in %env.
14604:
14605: =item *
14606: X<delenv()>
14607: B<delenv($delthis,$regexp)>: removes all items from the session
14608: environment file that begin with $delthis. If the
14609: optional second arg - $regexp - is true, $delthis is treated as a
14610: regular expression, otherwise \Q$delthis\E is used.
14611: The values are also deleted from the current processes %env.
14612:
14613: =item * get_env_multiple($name)
14614:
14615: gets $name from the %env hash, it seemlessly handles the cases where multiple
14616: values may be defined and end up as an array ref.
14617:
14618: returns an array of values
14619:
14620: =back
14621:
14622: =head2 User Information
14623:
14624: =over 4
14625:
14626: =item *
14627: X<queryauthenticate()>
14628: B<queryauthenticate($uname,$udom)>: try to determine user's current
14629: authentication scheme
14630:
14631: =item *
14632: X<authenticate()>
14633: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14634: authenticate user from domain's lib servers (first use the current
14635: one). C<$upass> should be the users password.
14636: $checkdefauth is optional (value is 1 if a check should be made to
14637: authenticate user using default authentication method, and allow
14638: account creation if username does not have account in the domain).
14639: $clientcancheckhost is optional (value is 1 if checking whether the
14640: server can host will occur on the client side in lonauth.pm).
14641:
14642: =item *
14643: X<homeserver()>
14644: B<homeserver($uname,$udom)>: find the server which has
14645: the user's directory and files (there must be only one), this caches
14646: the answer, and also caches if there is a borken connection.
14647:
14648: =item *
14649: X<idget()>
14650: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14651: a list of student/employee IDs or clicker IDs
14652: (student/employee IDs are a unique resource in a domain, there must be
14653: only 1 ID per username, and only 1 username per ID in a specific domain).
14654: clickerIDs are not necessarily unique, as students might share clickers.
14655: (returns hash: id=>name,id=>name)
14656:
14657: =item *
14658: X<idrget()>
14659: B<idrget($udom,@unames)>: find the IDs behind a list of
14660: usernames (returns hash: name=>id,name=>id)
14661:
14662: =item *
14663: X<idput()>
14664: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14665: names and associated student/employee IDs or clicker IDs.
14666:
14667: =item *
14668: X<iddel()>
14669: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14670: student/employee ID or clicker ID username look-ups from domain.
14671: The homeserver ($uhome) and namespace ($namespace) are optional.
14672: If no $uhome is provided, it will be determined usig &homeserver()
14673: for each user. If no $namespace is provided, the default is ids.
14674:
14675: =item *
14676: X<updateclickers()>
14677: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14678: clicker ID-to-username look-ups in clickers.db on library server.
14679: Permitted actions are add or del (i.e., add or delete). The
14680: clickers.db contains clickerID as keys (escaped), and each corresponding
14681: value is an escaped comma-separated list of usernames (for whom the
14682: library server is the homeserver), who registered that particular ID.
14683: If $critical is true, the update will be sent via &critical, otherwise
14684: &reply() will be used.
14685:
14686: =item *
14687: X<rolesinit()>
14688: B<rolesinit($udom,$username)>: get user privileges.
14689: returns user role, first access and timer interval hashes
14690:
14691: =item *
14692: X<privileged()>
14693: B<privileged($username,$domain)>: returns a true if user has a
14694: privileged and active role (i.e. su or dc), false otherwise.
14695:
14696: =item *
14697: X<getsection()>
14698: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14699: course $cname, return section name/number or '' for "not in course"
14700: and '-1' for "no section"
14701:
14702: =item *
14703: X<userenvironment()>
14704: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14705: passed in @what from the requested user's environment, returns a hash
14706:
14707: =item *
14708: X<userlog_query()>
14709: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14710: activity.log file. %filters defines filters applied when parsing the
14711: log file. These can be start or end timestamps, or the type of action
14712: - log to look for Login or Logout events, check for Checkin or
14713: Checkout, role for role selection. The response is in the form
14714: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14715: escaped strings of the action recorded in the activity.log file.
14716:
14717: =back
14718:
14719: =head2 User Roles
14720:
14721: =over 4
14722:
14723: =item *
14724:
14725: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14726: returns codes for allowed actions.
14727:
14728: The first argument is required, all others are optional.
14729:
14730: $priv is the privilege being checked.
14731: $uri contains additional information about what is being checked for access (e.g.,
14732: URL, course ID etc.).
14733: $symb is the unique resource instance identifier in a course; if needed,
14734: but not provided, it will be retrieved via a call to &symbread().
14735: $role is the role for which a priv is being checked (only used if priv is evb).
14736: $clientip is the user's IP address (only used when checking for access to portfolio
14737: files).
14738: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14739: prevents recursive calls to &allowed.
14740:
14741: F: full access
14742: U,I,K: authentication modes (cxx only)
14743: '': forbidden
14744: 1: user needs to choose course
14745: 2: browse allowed
14746: A: passphrase authentication needed
14747: B: access temporarily blocked because of a blocking event in a course.
14748:
14749: =item *
14750:
14751: constructaccess($url,$setpriv) : check for access to construction space URL
14752:
14753: See if the owner domain and name in the URL match those in the
14754: expected environment. If so, return three element list
14755: ($ownername,$ownerdomain,$ownerhome).
14756:
14757: Otherwise return the null string.
14758:
14759: If second argument 'setpriv' is true, it assigns the privileges,
14760: and returns the same three element list, unless the owner has
14761: blocked "ad hoc" Domain Coordinator access to the Author Space,
14762: in which case the null string is returned.
14763:
14764: =item *
14765:
14766: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14767: define a custom role rolename set privileges in format of lonTabs/roles.tab
14768: for system, domain, and course level. $uname and $udom are optional (current
14769: user's username and domain will be used when either of $uname or $udom are absent.
14770:
14771: =item *
14772:
14773: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14774: (rolesplain.tab); plain text explanation of a user role term.
14775: $type is Course (default) or Community.
14776: If $forcedefault evaluates to true, text returned will be default
14777: text for $type. Otherwise, if this is a course, the text returned
14778: will be a custom name for the role (if defined in the course's
14779: environment). If no custom name is defined the default is returned.
14780:
14781: =item *
14782:
14783: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14784: All arguments are optional. Returns a hash of a roles, either for
14785: co-author/assistant author roles for a user's Construction Space
14786: (default), or if $context is 'userroles', roles for the user himself,
14787: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14788: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14789: For each key, value is set to colon-separated start and end times for
14790: the role. If no username and domain are specified, will default to
14791: current user/domain. Types, roles, and roledoms are references to arrays
14792: of role statuses (active, future or previous), roles
14793: (e.g., cc,in, st etc.) and domains of the roles which can be used
14794: to restrict the list of roles reported. If no array ref is
14795: provided for types, will default to return only active roles.
14796:
14797: =item *
14798:
14799: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14800: user: $uname:$udom has a role in the course: $cdom_$cnum.
14801:
14802: Additional optional arguments are: $type (if role checking is to be restricted
14803: to certain user status types -- previous (expired roles), active (currently
14804: available roles) or future (roles available in the future), and
14805: $hideprivileged -- if true will not report course roles for users who
14806: have active Domain Coordinator role in course's domain or in additional
14807: domains (specified in 'Domains to check for privileged users' in course
14808: environment -- set via: Course Settings -> Classlists and staff listing).
14809:
14810: =item *
14811:
14812: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14813: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14814: $possdomains and $possroles are optional array refs -- to domains to check and
14815: roles to check. If $possdomains is not specified, a dump will be done of the
14816: users' roles.db to check for a dc or su role in any domain. This can be
14817: time consuming if &privileged is called repeatedly (e.g., when displaying a
14818: classlist), so in such cases, supplying a $possdomains array is preferred, as
14819: this then allows &privileged_by_domain() to be used, which caches the identity
14820: of privileged users, eliminating the need for repeated calls to &dump().
14821:
14822: =item *
14823:
14824: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14825: where the outer hash keys are domains specified in the $possdomains array ref,
14826: next inner hash keys are privileged roles specified in the $roles array ref,
14827: and the innermost hash contains key = value pairs for username:domain = end:start
14828: for active or future "privileged" users with that role in that domain. To avoid
14829: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14830: innerhash are cached using priv_$role and $dom as the identifiers.
14831:
14832: =back
14833:
14834: =head2 User Modification
14835:
14836: =over 4
14837:
14838: =item *
14839:
14840: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14841: user for the level given by URL. Optional start and end dates (leave empty
14842: string or zero for "no date")
14843:
14844: =item *
14845:
14846: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14847: change a users, password, possible return values are: ok,
14848: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14849: refused
14850:
14851: =item *
14852:
14853: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14854:
14855: =item *
14856:
14857: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14858: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14859:
14860: will update user information (firstname,middlename,lastname,generation,
14861: permanentemail), and if forceid is true, student/employee ID also.
14862: A user's institutional affiliation(s) can also be updated.
14863: User information fields will not be overwritten with empty entries
14864: unless the field is included in the $candelete array reference.
14865: This array is included when a single user is modified via "Manage Users",
14866: or when Autoupdate.pl is run by cron in a domain.
14867:
14868: =item *
14869:
14870: modifystudent
14871:
14872: modify a student's enrollment and identification information.
14873: The course id is resolved based on the current user's environment.
14874: This means the invoking user must be a course coordinator or otherwise
14875: associated with a course.
14876:
14877: This call is essentially a wrapper for lonnet::modifyuser and
14878: lonnet::modify_student_enrollment
14879:
14880: Inputs:
14881:
14882: =over 4
14883:
14884: =item B<$udom> Student's loncapa domain
14885:
14886: =item B<$uname> Student's loncapa login name
14887:
14888: =item B<$uid> Student/Employee ID
14889:
14890: =item B<$umode> Student's authentication mode
14891:
14892: =item B<$upass> Student's password
14893:
14894: =item B<$first> Student's first name
14895:
14896: =item B<$middle> Student's middle name
14897:
14898: =item B<$last> Student's last name
14899:
14900: =item B<$gene> Student's generation
14901:
14902: =item B<$usec> Student's section in course
14903:
14904: =item B<$end> Unix time of the roles expiration
14905:
14906: =item B<$start> Unix time of the roles start date
14907:
14908: =item B<$forceid> If defined, allow $uid to be changed
14909:
14910: =item B<$desiredhome> server to use as home server for student
14911:
14912: =item B<$email> Student's permanent e-mail address
14913:
14914: =item B<$type> Type of enrollment (auto or manual)
14915:
14916: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14917:
14918: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14919:
14920: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14921:
14922: =item B<$context> role change context (shown in User Management Logs display in a course)
14923:
14924: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14925:
14926: =item B<$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.
14927:
14928: =back
14929:
14930: =item *
14931:
14932: modify_student_enrollment
14933:
14934: Change a student's enrollment status in a class. The environment variable
14935: 'role.request.course' must be defined for this function to proceed.
14936:
14937: Inputs:
14938:
14939: =over 4
14940:
14941: =item $udom, student's domain
14942:
14943: =item $uname, student's name
14944:
14945: =item $uid, student's user id
14946:
14947: =item $first, student's first name
14948:
14949: =item $middle
14950:
14951: =item $last
14952:
14953: =item $gene
14954:
14955: =item $usec
14956:
14957: =item $end
14958:
14959: =item $start
14960:
14961: =item $type
14962:
14963: =item $locktype
14964:
14965: =item $cid
14966:
14967: =item $selfenroll
14968:
14969: =item $context
14970:
14971: =item $credits, number of credits student will earn from this class
14972:
14973: =item $instsec, institutional course section code for student
14974:
14975: =back
14976:
14977:
14978: =item *
14979:
14980: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14981: custom role; give a custom role to a user for the level given by URL. Specify
14982: name and domain of role author, and role name
14983:
14984: =item *
14985:
14986: revokerole($udom,$uname,$url,$role) : revoke a role for url
14987:
14988: =item *
14989:
14990: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14991:
14992: =back
14993:
14994: =head2 Course Infomation
14995:
14996: =over 4
14997:
14998: =item *
14999:
15000: coursedescription($courseid,$options) : returns a hash of information about the
15001: specified course id, including all environment settings for the
15002: course, the description of the course will be in the hash under the
15003: key 'description'
15004:
15005: $options is an optional parameter that if supplied is a hash reference that controls
15006: what how this function works. It has the following key/values:
15007:
15008: =over 4
15009:
15010: =item freshen_cache
15011:
15012: If defined, and the environment cache for the course is valid, it is
15013: returned in the returned hash.
15014:
15015: =item one_time
15016:
15017: If defined, the last cache time is set to _now_
15018:
15019: =item user
15020:
15021: If defined, the supplied username is used instead of the current user.
15022:
15023:
15024: =back
15025:
15026: =item *
15027:
15028: resdata($name,$domain,$type,@which) : request for current parameter
15029: setting for a specific $type, where $type is either 'course' or 'user',
15030: @what should be a list of parameters to ask about. This routine caches
15031: answers for 10 minutes.
15032:
15033: =item *
15034:
15035: get_courseresdata($courseid, $domain) : dump the entire course resource
15036: data base, returning a hash that is keyed by the resource name and has
15037: values that are the resource value. I believe that the timestamps and
15038: versions are also returned.
15039:
15040: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15041: supplemental content area. This routine caches the number of files for
15042: 10 minutes.
15043:
15044: =back
15045:
15046: =head2 Course Modification
15047:
15048: =over 4
15049:
15050: =item *
15051:
15052: writecoursepref($courseid,%prefs) : write preferences (environment
15053: database) for a course
15054:
15055: =item *
15056:
15057: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15058:
15059: =item *
15060:
15061: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15062:
15063: =item *
15064:
15065: is_course($courseid), is_course($cdom, $cnum)
15066:
15067: Accepts either a combined $courseid (in the form of domain_courseid) or the
15068: two component version $cdom, $cnum. It checks if the specified course exists.
15069:
15070: Returns:
15071: undef if the course doesn't exist, otherwise
15072: in scalar context the combined courseid.
15073: in list context the two components of the course identifier, domain and
15074: courseid.
15075:
15076: =back
15077:
15078: =head2 Resource Subroutines
15079:
15080: =over 4
15081:
15082: =item *
15083:
15084: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15085:
15086: =item *
15087:
15088: repcopy($filename) : subscribes to the requested file, and attempts to
15089: replicate from the owning library server, Might return
15090: 'unavailable', 'not_found', 'forbidden', 'ok', or
15091: 'bad_request', also attempts to grab the metadata for the
15092: resource. Expects the local filesystem pathname
15093: (/home/httpd/html/res/....)
15094:
15095: =back
15096:
15097: =head2 Resource Information
15098:
15099: =over 4
15100:
15101: =item *
15102:
15103: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15104: and returns the value of a variety of different possible values,
15105: $varname should be a request string, and the other parameters can be
15106: used to specify who and what one is asking about. Ordinarily, $cid
15107: does not need to be specified, as it is retrived from
15108: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15109: within lonuserstate::loadmap() when initializing a course, before
15110: $env{'request.course.id'} has been set, so it needs to be provided
15111: in that one case.
15112:
15113: Possible values for $varname are environment.lastname (or other item
15114: from the envirnment hash), user.name (or someother aspect about the
15115: user), resource.0.maxtries (or some other part and parameter of a
15116: resource)
15117:
15118: =item *
15119:
15120: directcondval($number) : get current value of a condition; reads from a state
15121: string
15122:
15123: =item *
15124:
15125: condval($condidx) : value of condition index based on state
15126:
15127: =item *
15128:
15129: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15130: resource's metadata, $what should be either a specific key, or either
15131: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15132: packages that this resource currently uses, the last 3 arguments are
15133: only used internally for recursive metadata.
15134:
15135: the toolsymb is only used where the uri is for an external tool (for which
15136: the uri as well as the symb are guaranteed to be unique).
15137:
15138: this function automatically caches all requests except any made recursively
15139: to retrieve a list of metadata keys for an imported library file ($liburi is
15140: defined).
15141:
15142: =item *
15143:
15144: metadata_query($query,$custom,$customshow) : make a metadata query against the
15145: network of library servers; returns file handle of where SQL and regex results
15146: will be stored for query
15147:
15148: =item *
15149:
15150: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15151: return symbolic list entry (all arguments optional).
15152:
15153: Args: filename is the filename (including path) for the file for which a symb
15154: is required; donotrecurse, if true will prevent calls to allowed() being made
15155: to check access status if more than one resource was found in the bighash
15156: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15157: a randompick); ignorecachednull, if true will prevent a symb of '' being
15158: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15159: cause possible symbs to be checked to determine if they are subject to content
15160: blocking, if so they will not be included as possible symbs; possibles is a
15161: ref to a hash, which, as a side effect, will be populated with all possible
15162: symbs (content blocking not tested).
15163:
15164: returns the data handle
15165:
15166: =item *
15167:
15168: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15169: and is a possible symb for the URL in $thisfn, and if is an encrypted
15170: resource that the user accessed using /enc/ returns a 1 on success, 0
15171: on failure, user must be in a course, as it assumes the existence of
15172: the course initial hash, and uses $env('request.course.id'}. The third
15173: arg is an optional reference to a scalar. If this arg is passed in the
15174: call to symbverify, it will be set to 1 if the symb has been set to be
15175: encrypted; otherwise it will be null.
15176:
15177: =item *
15178:
15179: symbclean($symb) : removes versions numbers from a symb, returns the
15180: cleaned symb
15181:
15182: =item *
15183:
15184: is_on_map($uri) : checks if the $uri is somewhere on the current
15185: course map, user must be in a course for it to work.
15186:
15187: =item *
15188:
15189: numval($salt) : return random seed value (addend for rndseed)
15190:
15191: =item *
15192:
15193: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15194: a random seed, all arguments are optional, if they aren't sent it uses the
15195: environment to derive them. Note: if symb isn't sent and it can't get one
15196: from &symbread it will use the current time as its return value
15197:
15198: =item *
15199:
15200: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15201: unfakeable, receipt
15202:
15203: =item *
15204:
15205: receipt() : API to ireceipt working off of env values; given out to users
15206:
15207: =item *
15208:
15209: countacc($url) : count the number of accesses to a given URL
15210:
15211: =item *
15212:
15213: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15214:
15215: =item *
15216:
15217: checkin($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 $tcrsid)
15218:
15219: =item *
15220:
15221: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15222:
15223: =item *
15224:
15225: devalidate($symb) : devalidate temporary spreadsheet calculations,
15226: forcing spreadsheet to reevaluate the resource scores next time.
15227:
15228: =item *
15229:
15230: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15231: when viewing in course context.
15232:
15233: input: six args -- filename (decluttered), course number, course domain,
15234: url, symb (if registered) and group (if this is a
15235: group item -- e.g., bulletin board, group page etc.).
15236:
15237: output: array of five scalars --
15238: $cfile -- url for file editing if editable on current server
15239: $home -- homeserver of resource (i.e., for author if published,
15240: or course if uploaded.).
15241: $switchserver -- 1 if server switch will be needed.
15242: $forceedit -- 1 if icon/link should be to go to edit mode
15243: $forceview -- 1 if icon/link should be to go to view mode
15244:
15245: =item *
15246:
15247: is_course_upload($file,$cnum,$cdom)
15248:
15249: Used in course context to determine if current file was uploaded to
15250: the course (i.e., would be found in /userfiles/docs on the course's
15251: homeserver.
15252:
15253: input: 3 args -- filename (decluttered), course number and course domain.
15254: output: boolean -- 1 if file was uploaded.
15255:
15256: =back
15257:
15258: =head2 Storing/Retreiving Data
15259:
15260: =over 4
15261:
15262: =item *
15263:
15264: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15265: permanently for this url; hashref needs to be given and should be a \%hashname;
15266: the remaining args aren't required and if they aren't passed or are '' they will
15267: be derived from the env (with the exception of $laststore, which is an
15268: optional arg used when a user's submission is stored in grading).
15269: $laststore is $version=$timestamp, where $version is the most recent version
15270: number retrieved for the corresponding $symb in the $namespace db file, and
15271: $timestamp is the timestamp for that transaction (UNIX time).
15272: $laststore is currently only passed when cstore() is called by
15273: structuretags::finalize_storage().
15274:
15275: =item *
15276:
15277: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15278: but uses critical subroutine
15279:
15280: =item *
15281:
15282: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15283: all args are optional
15284:
15285: =item *
15286:
15287: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15288: dumps the complete (or key matching regexp) namespace into a hash
15289: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15290: normally &store()ed into
15291:
15292: $range should be either an integer '100' (give me the first 100
15293: matching records)
15294: or be two integers sperated by a - with no spaces
15295: '30-50' (give me the 30th through the 50th matching
15296: records)
15297:
15298:
15299: =item *
15300:
15301: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15302: replaces a &store() version of data with a replacement set of data
15303: for a particular resource in a namespace passed in the $storehash hash
15304: reference. If $tolog is true, the transaction is logged in the courselog
15305: with an action=PUTSTORE.
15306:
15307: =item *
15308:
15309: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15310: works very similar to store/cstore, but all data is stored in a
15311: temporary location and can be reset using tmpreset, $storehash should
15312: be a hash reference, returns nothing on success
15313:
15314: =item *
15315:
15316: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15317: similar to restore, but all data is stored in a temporary location and
15318: can be reset using tmpreset. Returns a hash of values on success,
15319: error string otherwise.
15320:
15321: =item *
15322:
15323: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15324: deltes all keys for $symb form the temporary storage hash.
15325:
15326: =item *
15327:
15328: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15329: reference filled in from namesp ($udom and $uname are optional)
15330:
15331: =item *
15332:
15333: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15334: namesp ($udom and $uname are optional)
15335:
15336: =item *
15337:
15338: dump($namespace,$udom,$uname,$regexp,$range) :
15339: dumps the complete (or key matching regexp) namespace into a hash
15340: ($udom, $uname, $regexp, $range are optional)
15341:
15342: $range should be either an integer '100' (give me the first 100
15343: matching records)
15344: or be two integers sperated by a - with no spaces
15345: '30-50' (give me the 30th through the 50th matching
15346: records)
15347: =item *
15348:
15349: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15350: $store can be a scalar, an array reference, or if the amount to be
15351: incremented is > 1, a hash reference.
15352:
15353: ($udom and $uname are optional)
15354:
15355: =item *
15356:
15357: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15358: ($udom and $uname are optional)
15359:
15360: =item *
15361:
15362: cput($namespace,$storehash,$udom,$uname) : critical put
15363: ($udom and $uname are optional)
15364:
15365: =item *
15366:
15367: newput($namespace,$storehash,$udom,$uname) :
15368:
15369: Attempts to store the items in the $storehash, but only if they don't
15370: currently exist, if this succeeds you can be certain that you have
15371: successfully created a new key value pair in the $namespace db.
15372:
15373:
15374: Args:
15375: $namespace: name of database to store values to
15376: $storehash: hashref to store to the db
15377: $udom: (optional) domain of user containing the db
15378: $uname: (optional) name of user caontaining the db
15379:
15380: Returns:
15381: 'ok' -> succeeded in storing all keys of $storehash
15382: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15383: least <key> already existed in the db (other
15384: requested keys may also already exist)
15385: 'error: <msg>' -> unable to tie the DB or other error occurred
15386: 'con_lost' -> unable to contact request server
15387: 'refused' -> action was not allowed by remote machine
15388:
15389:
15390: =item *
15391:
15392: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15393: reference filled in from namesp (encrypts the return communication)
15394: ($udom and $uname are optional)
15395:
15396: =item *
15397:
15398: log($udom,$name,$home,$message) : write to permanent log for user; use
15399: critical subroutine
15400:
15401: =item *
15402:
15403: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15404: array reference filled in from namespace found in domain level on either
15405: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15406:
15407: =item *
15408:
15409: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15410: domain level either on specified domain server ($uhome) or primary domain
15411: server ($udom and $uhome are optional)
15412:
15413: =item *
15414:
15415: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15416: for: authentication, language, quotas, timezone, date locale, and portal URL in
15417: the target domain.
15418:
15419: May also include additional key => value pairs for the following groups:
15420:
15421: =over
15422:
15423: =item
15424: disk quotas (MB allocated by default to portfolios and authoring spaces).
15425:
15426: =over
15427:
15428: =item defaultquota, authorquota
15429:
15430: =back
15431:
15432: =item
15433: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15434: portfolio for users).
15435:
15436: =over
15437:
15438: =item
15439: aboutme, blog, webdav, portfolio
15440:
15441: =back
15442:
15443: =item
15444: requestcourses: ability to request courses, and how requests are processed.
15445:
15446: =over
15447:
15448: =item
15449: official, unofficial, community, textbook, placement
15450:
15451: =back
15452:
15453: =item
15454: inststatus: types of institutional affiliation, and order in which they are displayed.
15455:
15456: =over
15457:
15458: =item
15459: inststatustypes, inststatusorder, inststatusguest
15460:
15461: =back
15462:
15463: =item
15464: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15465: for course's uploaded content.
15466:
15467: =over
15468:
15469: =item
15470: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15471: communityquota, textbookquota, placementquota
15472:
15473: =back
15474:
15475: =item
15476: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15477: on your servers.
15478:
15479: =over
15480:
15481: =item
15482: remotesessions, hostedsessions
15483:
15484: =back
15485:
15486: =back
15487:
15488: In cases where a domain coordinator has never used the "Set Domain Configuration"
15489: utility to create a configuration.db file on a domain's primary library server
15490: only the following domain defaults: auth_def, auth_arg_def, lang_def
15491: -- corresponding values are authentication type (internal, krb4, krb5,
15492: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15493: will be available. Values are retrieved from cache (if current), unless the
15494: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15495: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15496:
15497: Typical usage:
15498:
15499: %domdefaults = &get_domain_defaults($target_domain);
15500:
15501: =back
15502:
15503: =head2 Network Status Functions
15504:
15505: =over 4
15506:
15507: =item *
15508:
15509: dirlist() : return directory list based on URI (first arg).
15510:
15511: Inputs: 1 required, 5 optional.
15512:
15513: =over
15514:
15515: =item
15516: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15517:
15518: =item
15519: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15520:
15521: =item
15522: $username - username of user/course to be listed. Extracted from $uri if absent.
15523:
15524: =item
15525: $getpropath - boolean: 1 if prepend path using &propath().
15526:
15527: =item
15528: $getuserdir - boolean: 1 if prepend path for "userfiles".
15529:
15530: =item
15531: $alternateRoot - path to prepend in place of path from $uri.
15532:
15533: =back
15534:
15535: Returns: Array of up to two items.
15536:
15537: =over
15538:
15539: a reference to an array of files/subdirectories
15540:
15541: =over
15542:
15543: Each element in the array of files/subdirectories is a & separated list of
15544: item name and the result of running stat on the item. If dirlist was requested
15545: for a file instead of a directory, the item name will be ''. For a directory
15546: listing, if the item is a metadata file, the element will end &N&M
15547: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15548: default copyright set (1).
15549:
15550: =back
15551:
15552: a scalar containing error condition (if encountered).
15553:
15554: =over
15555:
15556: =item
15557: no_host (no homeserver identified for $username:$domain).
15558:
15559: =item
15560: no_such_host (server contacted for listing not identified as valid host).
15561:
15562: =item
15563: con_lost (connection to remote server failed).
15564:
15565: =item
15566: refused (invalid $username:$domain received on lond side).
15567:
15568: =item
15569: no_such_dir (directory at specified path on lond side does not exist).
15570:
15571: =item
15572: empty (directory at specified path on lond side is empty).
15573:
15574: =over
15575:
15576: This is currently not encountered because the &ls3, &ls2,
15577: &ls (_handler) routines on the lond side do not filter out
15578: . and .. from a directory listing.
15579:
15580: =back
15581:
15582: =back
15583:
15584: =back
15585:
15586: =item *
15587:
15588: spareserver() : find server with least workload from spare.tab
15589:
15590:
15591: =item *
15592:
15593: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15594: if there is no corresponding loncapa host.
15595:
15596: =back
15597:
15598:
15599: =head2 Apache Request
15600:
15601: =over 4
15602:
15603: =item *
15604:
15605: ssi($url,%hash) : server side include, does a complete request cycle on url to
15606: localhost, posts hash
15607:
15608: =back
15609:
15610: =head2 Data to String to Data
15611:
15612: =over 4
15613:
15614: =item *
15615:
15616: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15617: and '&' separators, supports elements that are arrayrefs and hashrefs
15618:
15619: =item *
15620:
15621: hashref2str($hashref) : convert a hashref into a string complete with
15622: escaping and '=' and '&' separators, supports elements that are
15623: arrayrefs and hashrefs
15624:
15625: =item *
15626:
15627: arrayref2str($arrayref) : convert an arrayref into a string complete
15628: with escaping and '&' separators, supports elements that are arrayrefs
15629: and hashrefs
15630:
15631: =item *
15632:
15633: str2hash($string) : convert string to hash using unescaping and
15634: splitting on '=' and '&', supports elements that are arrayrefs and
15635: hashrefs
15636:
15637: =item *
15638:
15639: str2array($string) : convert string to hash using unescaping and
15640: splitting on '&', supports elements that are arrayrefs and hashrefs
15641:
15642: =back
15643:
15644: =head2 Logging Routines
15645:
15646:
15647: These routines allow one to make log messages in the lonnet.log and
15648: lonnet.perm logfiles.
15649:
15650: =over 4
15651:
15652: =item *
15653:
15654: logtouch() : make sure the logfile, lonnet.log, exists
15655:
15656: =item *
15657:
15658: logthis() : append message to the normal lonnet.log file, it gets
15659: preiodically rolled over and deleted.
15660:
15661: =item *
15662:
15663: logperm() : append a permanent message to lonnet.perm.log, this log
15664: file never gets deleted by any automated portion of the system, only
15665: messages of critical importance should go in here.
15666:
15667:
15668: =back
15669:
15670: =head2 General File Helper Routines
15671:
15672: =over 4
15673:
15674: =item *
15675:
15676: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15677: (a) files in /uploaded
15678: (i) If a local copy of the file exists -
15679: compares modification date of local copy with last-modified date for
15680: definitive version stored on home server for course. If local copy is
15681: stale, requests a new version from the home server and stores it.
15682: If the original has been removed from the home server, then local copy
15683: is unlinked.
15684: (ii) If local copy does not exist -
15685: requests the file from the home server and stores it.
15686:
15687: If $caller is 'uploadrep':
15688: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15689: for request for files originally uploaded via DOCS.
15690: - returns 'ok' if fresh local copy now available, -1 otherwise.
15691:
15692: Otherwise:
15693: This indicates a call from the content generation phase of the request.
15694: - returns the entire contents of the file or -1.
15695:
15696: (b) files in /res
15697: - returns the entire contents of a file or -1;
15698: it properly subscribes to and replicates the file if neccessary.
15699:
15700:
15701: =item *
15702:
15703: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15704: reference
15705:
15706: returns either a stat() list of data about the file or an empty list
15707: if the file doesn't exist or couldn't find out about it (connection
15708: problems or user unknown)
15709:
15710: =item *
15711:
15712: filelocation($dir,$file) : returns file system location of a file
15713: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15714: directory that relative $file lookups are to looked in ($dir of /a/dir
15715: and a file of ../bob will become /a/bob)
15716:
15717: =item *
15718:
15719: hreflocation($dir,$file) : returns file system location or a URL; same as
15720: filelocation except for hrefs
15721:
15722: =item *
15723:
15724: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15725: also removes beginning /home/httpd/html unless /priv/ follows it.
15726:
15727: =back
15728:
15729: =head2 Usererfile file routines (/uploaded*)
15730:
15731: =over 4
15732:
15733: =item *
15734:
15735: userfileupload(): main rotine for putting a file in a user or course's
15736: filespace, arguments are,
15737:
15738: formname - required - this is the name of the element in $env where the
15739: filename, and the contents of the file to create/modifed exist
15740: the filename is in $env{'form.'.$formname.'.filename'} and the
15741: contents of the file is located in $env{'form.'.$formname}
15742: context - if coursedoc, store the file in the course of the active role
15743: of the current user;
15744: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15745: if 'canceloverwrite': delete file in tmp/overwrites directory
15746: subdir - required - subdirectory to put the file in under ../userfiles/
15747: if undefined, it will be placed in "unknown"
15748:
15749: (This routine calls clean_filename() to remove any dangerous
15750: characters from the filename, and then calls finuserfileupload() to
15751: complete the transaction)
15752:
15753: returns either the url of the uploaded file (/uploaded/....) if successful
15754: and /adm/notfound.html if unsuccessful
15755:
15756: =item *
15757:
15758: clean_filename(): routine for cleaing a filename up for storage in
15759: userfile space, argument is:
15760:
15761: filename - proposed filename
15762:
15763: returns: the new clean filename
15764:
15765: =item *
15766:
15767: finishuserfileupload(): routine that creates and sends the file to
15768: userspace, probably shouldn't be called directly
15769:
15770: docuname: username or courseid of destination for the file
15771: docudom: domain of user/course of destination for the file
15772: formname: same as for userfileupload()
15773: fname: filename (including subdirectories) for the file
15774: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15775: allfiles: reference to hash used to store objects found by parser
15776: codebase: reference to hash used for codebases of java objects found by parser
15777: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15778: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15779: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15780: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15781: context: if 'overwrite', will move the uploaded file from its temporary location to
15782: userfiles to facilitate overwriting a previously uploaded file with same name.
15783: mimetype: reference to scalar to accommodate mime type determined
15784: from File::MMagic if $parser = parse.
15785:
15786: returns either the url of the uploaded file (/uploaded/....) if successful
15787: and /adm/notfound.html if unsuccessful (or an error message if context
15788: was 'overwrite').
15789:
15790:
15791: =item *
15792:
15793: renameuserfile(): renames an existing userfile to a new name
15794:
15795: Args:
15796: docuname: username or courseid of destination for the file
15797: docudom: domain of user/course of destination for the file
15798: old: current file name (including any subdirs under userfiles)
15799: new: desired file name (including any subdirs under userfiles)
15800:
15801: =item *
15802:
15803: mkdiruserfile(): creates a directory is a userfiles dir
15804:
15805: Args:
15806: docuname: username or courseid of destination for the file
15807: docudom: domain of user/course of destination for the file
15808: dir: dir to create (including any subdirs under userfiles)
15809:
15810: =item *
15811:
15812: removeuserfile(): removes a file that exists in userfiles
15813:
15814: Args:
15815: docuname: username or courseid of destination for the file
15816: docudom: domain of user/course of destination for the file
15817: fname: filname to delete (including any subdirs under userfiles)
15818:
15819: =item *
15820:
15821: removeuploadedurl(): convience function for removeuserfile()
15822:
15823: Args:
15824: url: a full /uploaded/... url to delete
15825:
15826: =item *
15827:
15828: get_portfile_permissions():
15829: Args:
15830: domain: domain of user or course contain the portfolio files
15831: user: name of user or num of course contain the portfolio files
15832: Returns:
15833: hashref of a dump of the proper file_permissions.db
15834:
15835:
15836: =item *
15837:
15838: get_access_controls():
15839:
15840: Args:
15841: current_permissions: the hash ref returned from get_portfile_permissions()
15842: group: (optional) the group you want the files associated with
15843: file: (optional) the file you want access info on
15844:
15845: Returns:
15846: a hash (keys are file names) of hashes containing
15847: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15848: values are XML containing access control settings (see below)
15849:
15850: Internal notes:
15851:
15852: access controls are stored in file_permissions.db as key=value pairs.
15853: key -> path to file/file_name\0uniqueID:scope_end_start
15854: where scope -> public,guest,course,group,domains or users.
15855: end -> UNIX time for end of access (0 -> no end date)
15856: start -> UNIX time for start of access
15857:
15858: value -> XML description of access control
15859: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15860: <start></start>
15861: <end></end>
15862:
15863: <password></password> for scope type = guest
15864:
15865: <domain></domain> for scope type = course or group
15866: <number></number>
15867: <roles id="">
15868: <role></role>
15869: <access></access>
15870: <section></section>
15871: <group></group>
15872: </roles>
15873:
15874: <dom></dom> for scope type = domains
15875:
15876: <users> for scope type = users
15877: <user>
15878: <uname></uname>
15879: <udom></udom>
15880: </user>
15881: </users>
15882: </scope>
15883:
15884: Access data is also aggregated for each file in an additional key=value pair:
15885: key -> path to file/file_name\0accesscontrol
15886: value -> reference to hash
15887: hash contains key = value pairs
15888: where key = uniqueID:scope_end_start
15889: value = UNIX time record was last updated
15890:
15891: Used to improve speed of look-ups of access controls for each file.
15892:
15893: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15894:
15895: =item *
15896:
15897: modify_access_controls():
15898:
15899: Modifies access controls for a portfolio file
15900: Args
15901: 1. file name
15902: 2. reference to hash of required changes,
15903: 3. domain
15904: 4. username
15905: where domain,username are the domain of the portfolio owner
15906: (either a user or a course)
15907:
15908: Returns:
15909: 1. result of additions or updates ('ok' or 'error', with error message).
15910: 2. result of deletions ('ok' or 'error', with error message).
15911: 3. reference to hash of any new or updated access controls.
15912: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15913: key = integer (inbound ID)
15914: value = uniqueID
15915:
15916: =item *
15917:
15918: get_timebased_id():
15919:
15920: Attempts to get a unique timestamp-based suffix for use with items added to a
15921: course via the Course Editor (e.g., folders, composite pages,
15922: group bulletin boards).
15923:
15924: Args: (first three required; six others optional)
15925:
15926: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15927: docssequence, or name of group
15928:
15929: 2. keyid (alphanumeric): name of temporary locking key in hash,
15930: e.g., num, boardids
15931:
15932: 3. namespace: name of gdbm file used to store suffixes already assigned;
15933: file will be named nohist_namespace.db
15934:
15935: 4. cdom: domain of course; default is current course domain from %env
15936:
15937: 5. cnum: course number; default is current course number from %env
15938:
15939: 6. idtype: set to concat if an additional digit is to be appended to the
15940: unix timestamp to form the suffix, if the plain timestamp is already
15941: in use. Default is to not do this, but simply increment the unix
15942: timestamp by 1 until a unique key is obtained.
15943:
15944: 7. who: holder of locking key; defaults to user:domain for user.
15945:
15946: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15947: retrying); default is 3.
15948:
15949: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15950:
15951: Returns:
15952:
15953: 1. suffix obtained (numeric)
15954:
15955: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15956:
15957: 3. error: contains (localized) error message if an error occurred.
15958:
15959:
15960: =back
15961:
15962: =head2 HTTP Helper Routines
15963:
15964: =over 4
15965:
15966: =item *
15967:
15968: escape() : unpack non-word characters into CGI-compatible hex codes
15969:
15970: =item *
15971:
15972: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15973:
15974: =back
15975:
15976: =head1 PRIVATE SUBROUTINES
15977:
15978: =head2 Underlying communication routines (Shouldn't call)
15979:
15980: =over 4
15981:
15982: =item *
15983:
15984: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15985:
15986: =item *
15987:
15988: reply() : uses subreply to send a message to remote machine, logs all failures
15989:
15990: =item *
15991:
15992: critical() : passes a critical message to another server; if cannot
15993: get through then place message in connection buffer directory and
15994: returns con_delayed, if incapable of saving message, returns
15995: con_failed
15996:
15997: =item *
15998:
15999: reconlonc() : tries to reconnect lonc client processes.
16000:
16001: =back
16002:
16003: =head2 Resource Access Logging
16004:
16005: =over 4
16006:
16007: =item *
16008:
16009: flushcourselogs() : flush (save) buffer logs and access logs
16010:
16011: =item *
16012:
16013: courselog($what) : save message for course in hash
16014:
16015: =item *
16016:
16017: courseacclog($what) : save message for course using &courselog(). Perform
16018: special processing for specific resource types (problems, exams, quizzes, etc).
16019:
16020: =item *
16021:
16022: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16023: as a PerlChildExitHandler
16024:
16025: =back
16026:
16027: =head2 Other
16028:
16029: =over 4
16030:
16031: =item *
16032:
16033: symblist($mapname,%newhash) : update symbolic storage links
16034:
16035: =back
16036:
16037: =cut
16038:
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