1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1358 2017/11/13 00:22:03 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76:
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_servercerts_info {
233: my ($lonhost,$context) = @_;
234: my ($rep,$uselocal);
235: if (grep { $_ eq $lonhost } ¤t_machine_ids()) {
236: $uselocal = 1;
237: }
238: if (($context ne 'cgi') && ($uselocal)) {
239: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
240: if ($distro eq '') {
241: $uselocal = 0;
242: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
243: if ($1 < 6) {
244: $uselocal = 0;
245: }
246: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
247: if ($1 < 12) {
248: $uselocal = 0;
249: }
250: }
251: }
252: if ($uselocal) {
253: $rep = LONCAPA::Lond::server_certs(\%perlvar);
254: } else {
255: $rep=&reply('servercerts',$lonhost);
256: }
257: my ($result,%returnhash);
258: if (defined($lonhost)) {
259: if (!defined(&hostname($lonhost))) {
260: return;
261: }
262: }
263: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
264: ($rep eq 'unknown_cmd')) {
265: $result = $rep;
266: } else {
267: $result = 'ok';
268: my @pairs=split(/\&/,$rep);
269: foreach my $item (@pairs) {
270: my ($key,$value)=split(/=/,$item,2);
271: my $what = &unescape($key);
272: $returnhash{$what}=&thaw_unescape($value);
273: }
274: }
275: return ($result,\%returnhash);
276: }
277:
278: sub get_server_loncaparev {
279: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
280: if (defined($lonhost)) {
281: if (!defined(&hostname($lonhost))) {
282: undef($lonhost);
283: }
284: }
285: if (!defined($lonhost)) {
286: if (defined(&domain($dom,'primary'))) {
287: $lonhost=&domain($dom,'primary');
288: if ($lonhost eq 'no_host') {
289: undef($lonhost);
290: }
291: }
292: }
293: if (defined($lonhost)) {
294: my $cachetime = 12*3600;
295: if (!$ignore_cache) {
296: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
297: if (defined($cached)) {
298: return $loncaparev;
299: }
300: }
301: my ($answer,$loncaparev);
302: my @ids=¤t_machine_ids();
303: if (grep(/^\Q$lonhost\E$/,@ids)) {
304: $answer = $perlvar{'lonVersion'};
305: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
306: $loncaparev = $1;
307: }
308: } else {
309: $answer = &reply('serverloncaparev',$lonhost);
310: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
311: if ($caller eq 'loncron') {
312: my $protocol = $protocol{$lonhost};
313: $protocol = 'http' if ($protocol ne 'https');
314: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
315: my $request=new HTTP::Request('GET',$url);
316: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
317: unless ($response->is_error()) {
318: my $content = $response->content;
319: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
320: $loncaparev = $1;
321: }
322: }
323: } else {
324: $loncaparev = $loncaparevs{$lonhost};
325: }
326: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
327: $loncaparev = $1;
328: }
329: }
330: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
331: }
332: }
333:
334: sub get_server_homeID {
335: my ($hostname,$ignore_cache,$caller) = @_;
336: unless ($ignore_cache) {
337: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
338: if (defined($cached)) {
339: return $serverhomeID;
340: }
341: }
342: my $cachetime = 12*3600;
343: my $serverhomeID;
344: if ($caller eq 'loncron') {
345: my @machine_ids = &machine_ids($hostname);
346: foreach my $id (@machine_ids) {
347: my $response = &reply('serverhomeID',$id);
348: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
349: $serverhomeID = $response;
350: last;
351: }
352: }
353: if ($serverhomeID eq '') {
354: $serverhomeID = $machine_ids[-1];
355: }
356: } else {
357: $serverhomeID = $serverhomeIDs{$hostname};
358: }
359: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
360: }
361:
362: sub get_remote_globals {
363: my ($lonhost,$whathash,$ignore_cache) = @_;
364: my ($result,%returnhash,%whatneeded);
365: if (ref($whathash) eq 'HASH') {
366: foreach my $what (sort(keys(%{$whathash}))) {
367: my $hashid = $lonhost.'-'.$what;
368: my ($response,$cached);
369: unless ($ignore_cache) {
370: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
371: }
372: if (defined($cached)) {
373: $returnhash{$what} = $response;
374: } else {
375: $whatneeded{$what} = 1;
376: }
377: }
378: if (keys(%whatneeded) == 0) {
379: $result = 'ok';
380: } else {
381: my $requested = &freeze_escape(\%whatneeded);
382: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
383: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
384: ($rep eq 'unknown_cmd')) {
385: $result = $rep;
386: } else {
387: $result = 'ok';
388: my @pairs=split(/\&/,$rep);
389: foreach my $item (@pairs) {
390: my ($key,$value)=split(/=/,$item,2);
391: my $what = &unescape($key);
392: my $hashid = $lonhost.'-'.$what;
393: $returnhash{$what}=&thaw_unescape($value);
394: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
395: }
396: }
397: }
398: }
399: return ($result,\%returnhash);
400: }
401:
402: sub remote_devalidate_cache {
403: my ($lonhost,$cachekeys) = @_;
404: my $items;
405: return unless (ref($cachekeys) eq 'ARRAY');
406: my $cachestr = join('&',@{$cachekeys});
407: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
408: return $response;
409: }
410:
411: # -------------------------------------------------- Non-critical communication
412: sub subreply {
413: my ($cmd,$server)=@_;
414: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
415: #
416: # With loncnew process trimming, there's a timing hole between lonc server
417: # process exit and the master server picking up the listen on the AF_UNIX
418: # socket. In that time interval, a lock file will exist:
419:
420: my $lockfile=$peerfile.".lock";
421: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
422: sleep(0.1);
423: }
424: # At this point, either a loncnew parent is listening or an old lonc
425: # or loncnew child is listening so we can connect or everything's dead.
426: #
427: # We'll give the connection a few tries before abandoning it. If
428: # connection is not possible, we'll con_lost back to the client.
429: #
430: my $client;
431: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
432: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
433: Type => SOCK_STREAM,
434: Timeout => 10);
435: if ($client) {
436: last; # Connected!
437: } else {
438: &create_connection(&hostname($server),$server);
439: }
440: sleep(0.1); # Try again later if failed connection.
441: }
442: my $answer;
443: if ($client) {
444: print $client "sethost:$server:$cmd\n";
445: $answer=<$client>;
446: if (!$answer) { $answer="con_lost"; }
447: chomp($answer);
448: } else {
449: $answer = 'con_lost'; # Failed connection.
450: }
451: return $answer;
452: }
453:
454: sub reply {
455: my ($cmd,$server)=@_;
456: unless (defined(&hostname($server))) { return 'no_such_host'; }
457: my $answer=subreply($cmd,$server);
458: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
459: &logthis("<font color=\"blue\">WARNING:".
460: " $cmd to $server returned $answer</font>");
461: }
462: return $answer;
463: }
464:
465: # ----------------------------------------------------------- Send USR1 to lonc
466:
467: sub reconlonc {
468: my ($lonid) = @_;
469: if ($lonid) {
470: my $hostname = &hostname($lonid);
471: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
472: if ($hostname && -e $peerfile) {
473: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
474: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
475: Type => SOCK_STREAM,
476: Timeout => 10);
477: if ($client) {
478: print $client ("reset_retries\n");
479: my $answer=<$client>;
480: #reset just this one.
481: }
482: }
483: return;
484: }
485:
486: &logthis("Trying to reconnect lonc");
487: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
488: if (open(my $fh,"<$loncfile")) {
489: my $loncpid=<$fh>;
490: chomp($loncpid);
491: if (kill 0 => $loncpid) {
492: &logthis("lonc at pid $loncpid responding, sending USR1");
493: kill USR1 => $loncpid;
494: sleep 1;
495: } else {
496: &logthis(
497: "<font color=\"blue\">WARNING:".
498: " lonc at pid $loncpid not responding, giving up</font>");
499: }
500: } else {
501: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
502: }
503: }
504:
505: # ------------------------------------------------------ Critical communication
506:
507: sub critical {
508: my ($cmd,$server)=@_;
509: unless (&hostname($server)) {
510: &logthis("<font color=\"blue\">WARNING:".
511: " Critical message to unknown server ($server)</font>");
512: return 'no_such_host';
513: }
514: my $answer=reply($cmd,$server);
515: if ($answer eq 'con_lost') {
516: &reconlonc($server);
517: my $answer=reply($cmd,$server);
518: if ($answer eq 'con_lost') {
519: my $now=time;
520: my $middlename=$cmd;
521: $middlename=substr($middlename,0,16);
522: $middlename=~s/\W//g;
523: my $dfilename=
524: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
525: $dumpcount++;
526: {
527: my $dfh;
528: if (open($dfh,">$dfilename")) {
529: print $dfh "$cmd\n";
530: close($dfh);
531: }
532: }
533: sleep 1;
534: my $wcmd='';
535: {
536: my $dfh;
537: if (open($dfh,"<$dfilename")) {
538: $wcmd=<$dfh>;
539: close($dfh);
540: }
541: }
542: chomp($wcmd);
543: if ($wcmd eq $cmd) {
544: &logthis("<font color=\"blue\">WARNING: ".
545: "Connection buffer $dfilename: $cmd</font>");
546: &logperm("D:$server:$cmd");
547: return 'con_delayed';
548: } else {
549: &logthis("<font color=\"red\">CRITICAL:"
550: ." Critical connection failed: $server $cmd</font>");
551: &logperm("F:$server:$cmd");
552: return 'con_failed';
553: }
554: }
555: }
556: return $answer;
557: }
558:
559: # ------------------------------------------- check if return value is an error
560:
561: sub error {
562: my ($result) = @_;
563: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
564: if ($2 == 2) { return undef; }
565: return $1;
566: }
567: return undef;
568: }
569:
570: sub convert_and_load_session_env {
571: my ($lonidsdir,$handle)=@_;
572: my @profile;
573: {
574: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
575: if (!$opened) {
576: return 0;
577: }
578: flock($idf,LOCK_SH);
579: @profile=<$idf>;
580: close($idf);
581: }
582: my %temp_env;
583: foreach my $line (@profile) {
584: if ($line !~ m/=/) {
585: return 0;
586: }
587: chomp($line);
588: my ($envname,$envvalue)=split(/=/,$line,2);
589: $temp_env{&unescape($envname)} = &unescape($envvalue);
590: }
591: unlink("$lonidsdir/$handle.id");
592: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
593: 0640)) {
594: %disk_env = %temp_env;
595: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
596: untie(%disk_env);
597: }
598: return 1;
599: }
600:
601: # ------------------------------------------- Transfer profile into environment
602: my $env_loaded;
603: sub transfer_profile_to_env {
604: my ($lonidsdir,$handle,$force_transfer) = @_;
605: if (!$force_transfer && $env_loaded) { return; }
606:
607: if (!defined($lonidsdir)) {
608: $lonidsdir = $perlvar{'lonIDsDir'};
609: }
610: if (!defined($handle)) {
611: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
612: }
613:
614: my $convert;
615: {
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: if (!$opened) {
618: return;
619: }
620: flock($idf,LOCK_SH);
621: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
624: untie(%disk_env);
625: } else {
626: $convert = 1;
627: }
628: }
629: if ($convert) {
630: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
631: &logthis("Failed to load session, or convert session.");
632: }
633: }
634:
635: my %remove;
636: while ( my $envname = each(%env) ) {
637: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
638: if ($time < time-300) {
639: $remove{$key}++;
640: }
641: }
642: }
643:
644: $env{'user.environment'} = "$lonidsdir/$handle.id";
645: $env_loaded=1;
646: foreach my $expired_key (keys(%remove)) {
647: &delenv($expired_key);
648: }
649: }
650:
651: # ---------------------------------------------------- Check for valid session
652: sub check_for_valid_session {
653: my ($r,$name,$userhashref,$domref) = @_;
654: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
655: my ($linkname,$pubname);
656: if ($name eq '') {
657: $name = 'lonID';
658: $linkname = 'lonLinkID';
659: $pubname = 'lonPubID';
660: }
661: my $lonid=$cookies{$name};
662: if (!$lonid) {
663: if (($name eq 'lonID') && ($ENV{'SERVER_PORT'} != 443) && ($linkname)) {
664: $lonid=$cookies{$linkname};
665: }
666: if (!$lonid) {
667: if (($name eq 'lonID') && ($pubname)) {
668: $lonid=$cookies{$pubname};
669: }
670: }
671: }
672: return undef if (!$lonid);
673:
674: my $handle=&LONCAPA::clean_handle($lonid->value);
675: my $lonidsdir;
676: if ($name eq 'lonDAV') {
677: $lonidsdir=$r->dir_config('lonDAVsessDir');
678: } else {
679: $lonidsdir=$r->dir_config('lonIDsDir');
680: }
681: if (!-e "$lonidsdir/$handle.id") {
682: if ((ref($domref)) && ($name eq 'lonID') &&
683: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
684: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
685: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
686: $$domref = $possudom;
687: }
688: }
689: return undef;
690: }
691:
692: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
693: return undef if (!$opened);
694:
695: flock($idf,LOCK_SH);
696: my %disk_env;
697: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
698: &GDBM_READER(),0640)) {
699: return undef;
700: }
701:
702: if (!defined($disk_env{'user.name'})
703: || !defined($disk_env{'user.domain'})) {
704: return undef;
705: }
706:
707: if (ref($userhashref) eq 'HASH') {
708: $userhashref->{'name'} = $disk_env{'user.name'};
709: $userhashref->{'domain'} = $disk_env{'user.domain'};
710: }
711:
712: return $handle;
713: }
714:
715: sub timed_flock {
716: my ($file,$lock_type) = @_;
717: my $failed=0;
718: eval {
719: local $SIG{__DIE__}='DEFAULT';
720: local $SIG{ALRM}=sub {
721: $failed=1;
722: die("failed lock");
723: };
724: alarm(13);
725: flock($file,$lock_type);
726: alarm(0);
727: };
728: if ($failed) {
729: return undef;
730: } else {
731: return 1;
732: }
733: }
734:
735: # ---------------------------------------------------------- Append Environment
736:
737: sub appenv {
738: my ($newenv,$roles) = @_;
739: if (ref($newenv) eq 'HASH') {
740: foreach my $key (keys(%{$newenv})) {
741: my $refused = 0;
742: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
743: $refused = 1;
744: if (ref($roles) eq 'ARRAY') {
745: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
746: if (grep(/^\Q$role\E$/,@{$roles})) {
747: $refused = 0;
748: }
749: }
750: }
751: if ($refused) {
752: &logthis("<font color=\"blue\">WARNING: ".
753: "Attempt to modify environment ".$key." to ".$newenv->{$key}
754: .'</font>');
755: delete($newenv->{$key});
756: } else {
757: $env{$key}=$newenv->{$key};
758: }
759: }
760: my $opened = open(my $env_file,'+<',$env{'user.environment'});
761: if ($opened
762: && &timed_flock($env_file,LOCK_EX)
763: &&
764: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
765: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
766: while (my ($key,$value) = each(%{$newenv})) {
767: $disk_env{$key} = $value;
768: }
769: untie(%disk_env);
770: }
771: }
772: return 'ok';
773: }
774: # ----------------------------------------------------- Delete from Environment
775:
776: sub delenv {
777: my ($delthis,$regexp,$roles) = @_;
778: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
779: my $refused = 1;
780: if (ref($roles) eq 'ARRAY') {
781: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
782: if (grep(/^\Q$role\E$/,@{$roles})) {
783: $refused = 0;
784: }
785: }
786: if ($refused) {
787: &logthis("<font color=\"blue\">WARNING: ".
788: "Attempt to delete from environment ".$delthis);
789: return 'error';
790: }
791: }
792: my $opened = open(my $env_file,'+<',$env{'user.environment'});
793: if ($opened
794: && &timed_flock($env_file,LOCK_EX)
795: &&
796: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
797: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
798: foreach my $key (keys(%disk_env)) {
799: if ($regexp) {
800: if ($key=~/^$delthis/) {
801: delete($env{$key});
802: delete($disk_env{$key});
803: }
804: } else {
805: if ($key=~/^\Q$delthis\E/) {
806: delete($env{$key});
807: delete($disk_env{$key});
808: }
809: }
810: }
811: untie(%disk_env);
812: }
813: return 'ok';
814: }
815:
816: sub get_env_multiple {
817: my ($name) = @_;
818: my @values;
819: if (defined($env{$name})) {
820: # exists is it an array
821: if (ref($env{$name})) {
822: @values=@{ $env{$name} };
823: } else {
824: $values[0]=$env{$name};
825: }
826: }
827: return(@values);
828: }
829:
830: # ------------------------------------------------------------------- Locking
831:
832: sub set_lock {
833: my ($text)=@_;
834: $locknum++;
835: my $id=$$.'-'.$locknum;
836: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
837: 'session.lock.'.$id => $text});
838: return $id;
839: }
840:
841: sub get_locks {
842: my $num=0;
843: my %texts=();
844: foreach my $lock (split(/\,/,$env{'session.locks'})) {
845: if ($lock=~/\w/) {
846: $num++;
847: $texts{$lock}=$env{'session.lock.'.$lock};
848: }
849: }
850: return ($num,%texts);
851: }
852:
853: sub remove_lock {
854: my ($id)=@_;
855: my $newlocks='';
856: foreach my $lock (split(/\,/,$env{'session.locks'})) {
857: if (($lock=~/\w/) && ($lock ne $id)) {
858: $newlocks.=','.$lock;
859: }
860: }
861: &appenv({'session.locks' => $newlocks});
862: &delenv('session.lock.'.$id);
863: }
864:
865: sub remove_all_locks {
866: my $activelocks=$env{'session.locks'};
867: foreach my $lock (split(/\,/,$env{'session.locks'})) {
868: if ($lock=~/\w/) {
869: &remove_lock($lock);
870: }
871: }
872: }
873:
874:
875: # ------------------------------------------ Find out current server userload
876: sub userload {
877: my $numusers=0;
878: {
879: opendir(LONIDS,$perlvar{'lonIDsDir'});
880: my $filename;
881: my $curtime=time;
882: while ($filename=readdir(LONIDS)) {
883: next if ($filename eq '.' || $filename eq '..');
884: next if ($filename =~ /publicuser_\d+\.id/);
885: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
886: if ($curtime-$mtime < 1800) { $numusers++; }
887: }
888: closedir(LONIDS);
889: }
890: my $userloadpercent=0;
891: my $maxuserload=$perlvar{'lonUserLoadLim'};
892: if ($maxuserload) {
893: $userloadpercent=100*$numusers/$maxuserload;
894: }
895: $userloadpercent=sprintf("%.2f",$userloadpercent);
896: return $userloadpercent;
897: }
898:
899: # ------------------------------ Find server with least workload from spare.tab
900:
901: sub spareserver {
902: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
903: my $spare_server;
904: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
905: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
906: : $userloadpercent;
907: my ($uint_dom,$remotesessions);
908: if (($udom ne '') && (&domain($udom) ne '')) {
909: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
910: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
911: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
912: $remotesessions = $udomdefaults{'remotesessions'};
913: }
914: my $spareshash = &this_host_spares($udom);
915: if (ref($spareshash) eq 'HASH') {
916: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
917: foreach my $try_server (@{ $spareshash->{'primary'} }) {
918: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
919: $try_server));
920: ($spare_server, $lowest_load) =
921: &compare_server_load($try_server, $spare_server, $lowest_load);
922: }
923: }
924:
925: my $found_server = ($spare_server ne '' && $lowest_load < 100);
926:
927: if (!$found_server) {
928: if (ref($spareshash->{'default'}) eq 'ARRAY') {
929: foreach my $try_server (@{ $spareshash->{'default'} }) {
930: next unless (&spare_can_host($udom,$uint_dom,
931: $remotesessions,$try_server));
932: ($spare_server, $lowest_load) =
933: &compare_server_load($try_server, $spare_server, $lowest_load);
934: }
935: }
936: }
937: }
938:
939: if (!$want_server_name) {
940: my $protocol = 'http';
941: if ($protocol{$spare_server} eq 'https') {
942: $protocol = $protocol{$spare_server};
943: }
944: if (defined($spare_server)) {
945: my $hostname = &hostname($spare_server);
946: if (defined($hostname)) {
947: $spare_server = $protocol.'://'.$hostname;
948: }
949: }
950: }
951: return $spare_server;
952: }
953:
954: sub compare_server_load {
955: my ($try_server, $spare_server, $lowest_load, $required) = @_;
956:
957: if ($required) {
958: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
959: my $remoterev = &get_server_loncaparev(undef,$try_server);
960: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
961: if (($major eq '' && $minor eq '') ||
962: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
963: return ($spare_server,$lowest_load);
964: }
965: }
966:
967: my $loadans = &reply('load', $try_server);
968: my $userloadans = &reply('userload',$try_server);
969:
970: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
971: return ($spare_server, $lowest_load); #didn't get a number from the server
972: }
973:
974: my $load;
975: if ($loadans =~ /\d/) {
976: if ($userloadans =~ /\d/) {
977: #both are numbers, pick the bigger one
978: $load = ($loadans > $userloadans) ? $loadans
979: : $userloadans;
980: } else {
981: $load = $loadans;
982: }
983: } else {
984: $load = $userloadans;
985: }
986:
987: if (($load =~ /\d/) && ($load < $lowest_load)) {
988: $spare_server = $try_server;
989: $lowest_load = $load;
990: }
991: return ($spare_server,$lowest_load);
992: }
993:
994: # --------------------------- ask offload servers if user already has a session
995: sub find_existing_session {
996: my ($udom,$uname) = @_;
997: my $spareshash = &this_host_spares($udom);
998: if (ref($spareshash) eq 'HASH') {
999: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1000: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1001: return $try_server if (&has_user_session($try_server, $udom, $uname));
1002: }
1003: }
1004: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1005: foreach my $try_server (@{ $spareshash->{'default'} }) {
1006: return $try_server if (&has_user_session($try_server, $udom, $uname));
1007: }
1008: }
1009: }
1010: return;
1011: }
1012:
1013: # -------------------------------- ask if server already has a session for user
1014: sub has_user_session {
1015: my ($lonid,$udom,$uname) = @_;
1016: my $result = &reply(join(':','userhassession',
1017: map {&escape($_)} ($udom,$uname)),$lonid);
1018: return 1 if ($result eq 'ok');
1019:
1020: return 0;
1021: }
1022:
1023: # --------- determine least loaded server in a user's domain which allows login
1024:
1025: sub choose_server {
1026: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1027: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1028: my %servers = &get_servers($udom);
1029: my $lowest_load = 30000;
1030: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1031: if ($skiploadbal) {
1032: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1033: unless (defined($cached)) {
1034: my $cachetime = 60*60*24;
1035: my %domconfig =
1036: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1037: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1038: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1039: $cachetime);
1040: }
1041: }
1042: }
1043: foreach my $lonhost (keys(%servers)) {
1044: if ($skiploadbal) {
1045: if (ref($balancers) eq 'HASH') {
1046: next if (exists($balancers->{$lonhost}));
1047: }
1048: }
1049: my $loginvia;
1050: if ($checkloginvia) {
1051: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1052: if ($loginvia) {
1053: my ($server,$path) = split(/:/,$loginvia);
1054: ($login_host, $lowest_load) =
1055: &compare_server_load($server, $login_host, $lowest_load, $required);
1056: if ($login_host eq $server) {
1057: $portal_path = $path;
1058: $isredirect = 1;
1059: }
1060: } else {
1061: ($login_host, $lowest_load) =
1062: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1063: if ($login_host eq $lonhost) {
1064: $portal_path = '';
1065: $isredirect = '';
1066: }
1067: }
1068: } else {
1069: ($login_host, $lowest_load) =
1070: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1071: }
1072: }
1073: if ($login_host ne '') {
1074: $hostname = &hostname($login_host);
1075: }
1076: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1077: }
1078:
1079: # --------------------------------------------- Try to change a user's password
1080:
1081: sub changepass {
1082: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1083: $currentpass = &escape($currentpass);
1084: $newpass = &escape($newpass);
1085: my $lonhost = $perlvar{'lonHostID'};
1086: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1087: $server);
1088: if (! $answer) {
1089: &logthis("No reply on password change request to $server ".
1090: "by $uname in domain $udom.");
1091: } elsif ($answer =~ "^ok") {
1092: &logthis("$uname in $udom successfully changed their password ".
1093: "on $server.");
1094: } elsif ($answer =~ "^pwchange_failure") {
1095: &logthis("$uname in $udom was unable to change their password ".
1096: "on $server. The action was blocked by either lcpasswd ".
1097: "or pwchange");
1098: } elsif ($answer =~ "^non_authorized") {
1099: &logthis("$uname in $udom did not get their password correct when ".
1100: "attempting to change it on $server.");
1101: } elsif ($answer =~ "^auth_mode_error") {
1102: &logthis("$uname in $udom attempted to change their password despite ".
1103: "not being locally or internally authenticated on $server.");
1104: } elsif ($answer =~ "^unknown_user") {
1105: &logthis("$uname in $udom attempted to change their password ".
1106: "on $server but were unable to because $server is not ".
1107: "their home server.");
1108: } elsif ($answer =~ "^refused") {
1109: &logthis("$server refused to change $uname in $udom password because ".
1110: "it was sent an unencrypted request to change the password.");
1111: } elsif ($answer =~ "invalid_client") {
1112: &logthis("$server refused to change $uname in $udom password because ".
1113: "it was a reset by e-mail originating from an invalid server.");
1114: }
1115: return $answer;
1116: }
1117:
1118: # ----------------------- Try to determine user's current authentication scheme
1119:
1120: sub queryauthenticate {
1121: my ($uname,$udom)=@_;
1122: my $uhome=&homeserver($uname,$udom);
1123: if (!$uhome) {
1124: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1125: return 'no_host';
1126: }
1127: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1128: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1129: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1130: }
1131: return $answer;
1132: }
1133:
1134: # --------- Try to authenticate user from domain's lib servers (first this one)
1135:
1136: sub authenticate {
1137: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1138: $upass=&escape($upass);
1139: $uname= &LONCAPA::clean_username($uname);
1140: my $uhome=&homeserver($uname,$udom,1);
1141: my $newhome;
1142: if ((!$uhome) || ($uhome eq 'no_host')) {
1143: # Maybe the machine was offline and only re-appeared again recently?
1144: &reconlonc();
1145: # One more
1146: $uhome=&homeserver($uname,$udom,1);
1147: if (($uhome eq 'no_host') && $checkdefauth) {
1148: if (defined(&domain($udom,'primary'))) {
1149: $newhome=&domain($udom,'primary');
1150: }
1151: if ($newhome ne '') {
1152: $uhome = $newhome;
1153: }
1154: }
1155: if ((!$uhome) || ($uhome eq 'no_host')) {
1156: &logthis("User $uname at $udom is unknown in authenticate");
1157: return 'no_host';
1158: }
1159: }
1160: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1161: if ($answer eq 'authorized') {
1162: if ($newhome) {
1163: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1164: return 'no_account_on_host';
1165: } else {
1166: &logthis("User $uname at $udom authorized by $uhome");
1167: return $uhome;
1168: }
1169: }
1170: if ($answer eq 'non_authorized') {
1171: &logthis("User $uname at $udom rejected by $uhome");
1172: return 'no_host';
1173: }
1174: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1175: return 'no_host';
1176: }
1177:
1178: sub can_host_session {
1179: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1180: my $canhost = 1;
1181: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1182: if (ref($remotesessions) eq 'HASH') {
1183: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1184: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1185: $canhost = 0;
1186: } else {
1187: $canhost = 1;
1188: }
1189: }
1190: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1191: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1192: $canhost = 1;
1193: } else {
1194: $canhost = 0;
1195: }
1196: }
1197: if ($canhost) {
1198: if ($remotesessions->{'version'} ne '') {
1199: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1200: if ($reqmajor ne '' && $reqminor ne '') {
1201: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1202: my $major = $1;
1203: my $minor = $2;
1204: if (($major < $reqmajor ) ||
1205: (($major == $reqmajor) && ($minor < $reqminor))) {
1206: $canhost = 0;
1207: }
1208: } else {
1209: $canhost = 0;
1210: }
1211: }
1212: }
1213: }
1214: }
1215: if ($canhost) {
1216: if (ref($hostedsessions) eq 'HASH') {
1217: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1218: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1219: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1220: if (($uint_dom ne '') &&
1221: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1222: $canhost = 0;
1223: } else {
1224: $canhost = 1;
1225: }
1226: }
1227: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1228: if (($uint_dom ne '') &&
1229: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1230: $canhost = 1;
1231: } else {
1232: $canhost = 0;
1233: }
1234: }
1235: }
1236: }
1237: return $canhost;
1238: }
1239:
1240: sub spare_can_host {
1241: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1242: my $canhost=1;
1243: my $try_server_hostname = &hostname($try_server);
1244: my $serverhomeID = &get_server_homeID($try_server_hostname);
1245: my $serverhomedom = &host_domain($serverhomeID);
1246: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1247: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1248: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1249: $canhost = 0;
1250: }
1251: }
1252: if (($canhost) && ($uint_dom)) {
1253: my @intdoms;
1254: my $internet_names = &get_internet_names($try_server);
1255: if (ref($internet_names) eq 'ARRAY') {
1256: @intdoms = @{$internet_names};
1257: }
1258: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1259: my $remoterev = &get_server_loncaparev(undef,$try_server);
1260: $canhost = &can_host_session($udom,$try_server,$remoterev,
1261: $remotesessions,
1262: $defdomdefaults{'hostedsessions'});
1263: }
1264: }
1265: return $canhost;
1266: }
1267:
1268: sub this_host_spares {
1269: my ($dom) = @_;
1270: my ($dom_in_use,$lonhost_in_use,$result);
1271: my @hosts = ¤t_machine_ids();
1272: foreach my $lonhost (@hosts) {
1273: if (&host_domain($lonhost) eq $dom) {
1274: $dom_in_use = $dom;
1275: $lonhost_in_use = $lonhost;
1276: last;
1277: }
1278: }
1279: if ($dom_in_use ne '') {
1280: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1281: }
1282: if (ref($result) ne 'HASH') {
1283: $lonhost_in_use = $perlvar{'lonHostID'};
1284: $dom_in_use = &host_domain($lonhost_in_use);
1285: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1286: if (ref($result) ne 'HASH') {
1287: $result = \%spareid;
1288: }
1289: }
1290: return $result;
1291: }
1292:
1293: sub spares_for_offload {
1294: my ($dom_in_use,$lonhost_in_use) = @_;
1295: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1296: if (defined($cached)) {
1297: return $result;
1298: } else {
1299: my $cachetime = 60*60*24;
1300: my %domconfig =
1301: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1302: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1303: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1304: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1305: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1306: }
1307: }
1308: }
1309: }
1310: return;
1311: }
1312:
1313: sub get_lonbalancer_config {
1314: my ($servers) = @_;
1315: my ($currbalancer,$currtargets);
1316: if (ref($servers) eq 'HASH') {
1317: foreach my $server (keys(%{$servers})) {
1318: my %what = (
1319: spareid => 1,
1320: perlvar => 1,
1321: );
1322: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1323: if ($result eq 'ok') {
1324: if (ref($returnhash) eq 'HASH') {
1325: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1326: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1327: $currbalancer = $server;
1328: $currtargets = {};
1329: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1330: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1331: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1332: }
1333: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1334: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1335: }
1336: }
1337: last;
1338: }
1339: }
1340: }
1341: }
1342: }
1343: }
1344: return ($currbalancer,$currtargets);
1345: }
1346:
1347: sub check_loadbalancing {
1348: my ($uname,$udom,$caller) = @_;
1349: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1350: $rule_in_effect,$offloadto,$otherserver);
1351: my $lonhost = $perlvar{'lonHostID'};
1352: my @hosts = ¤t_machine_ids();
1353: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1354: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1355: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1356: my $serverhomedom = &host_domain($lonhost);
1357: my $domneedscache;
1358: my $cachetime = 60*60*24;
1359:
1360: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1361: $dom_in_use = $udom;
1362: $homeintdom = 1;
1363: } else {
1364: $dom_in_use = $serverhomedom;
1365: }
1366: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1367: unless (defined($cached)) {
1368: my %domconfig =
1369: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1370: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1371: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1372: } else {
1373: $domneedscache = $dom_in_use;
1374: }
1375: }
1376: if (ref($result) eq 'HASH') {
1377: ($is_balancer,$currtargets,$currrules) =
1378: &check_balancer_result($result,@hosts);
1379: if ($is_balancer) {
1380: if (ref($currrules) eq 'HASH') {
1381: if ($homeintdom) {
1382: if ($uname ne '') {
1383: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1384: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1385: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1386: $rule_in_effect = $currrules->{'_LC_author'};
1387: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1388: $rule_in_effect = $currrules->{'_LC_adv'}
1389: }
1390: }
1391: if ($rule_in_effect eq '') {
1392: my %userenv = &userenvironment($udom,$uname,'inststatus');
1393: if ($userenv{'inststatus'} ne '') {
1394: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1395: my ($othertitle,$usertypes,$types) =
1396: &Apache::loncommon::sorted_inst_types($udom);
1397: if (ref($types) eq 'ARRAY') {
1398: foreach my $type (@{$types}) {
1399: if (grep(/^\Q$type\E$/,@statuses)) {
1400: if (exists($currrules->{$type})) {
1401: $rule_in_effect = $currrules->{$type};
1402: }
1403: }
1404: }
1405: }
1406: } else {
1407: if (exists($currrules->{'default'})) {
1408: $rule_in_effect = $currrules->{'default'};
1409: }
1410: }
1411: }
1412: } else {
1413: if (exists($currrules->{'default'})) {
1414: $rule_in_effect = $currrules->{'default'};
1415: }
1416: }
1417: } else {
1418: if ($currrules->{'_LC_external'} ne '') {
1419: $rule_in_effect = $currrules->{'_LC_external'};
1420: }
1421: }
1422: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1423: $uname,$udom);
1424: }
1425: }
1426: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1427: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1428: unless (defined($cached)) {
1429: my %domconfig =
1430: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1431: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1432: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1433: } else {
1434: $domneedscache = $serverhomedom;
1435: }
1436: }
1437: if (ref($result) eq 'HASH') {
1438: ($is_balancer,$currtargets,$currrules) =
1439: &check_balancer_result($result,@hosts);
1440: if ($is_balancer) {
1441: if (ref($currrules) eq 'HASH') {
1442: if ($currrules->{'_LC_internetdom'} ne '') {
1443: $rule_in_effect = $currrules->{'_LC_internetdom'};
1444: }
1445: }
1446: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1447: $uname,$udom);
1448: }
1449: } else {
1450: if ($perlvar{'lonBalancer'} eq 'yes') {
1451: $is_balancer = 1;
1452: $offloadto = &this_host_spares($dom_in_use);
1453: }
1454: unless (defined($cached)) {
1455: $domneedscache = $serverhomedom;
1456: }
1457: }
1458: } else {
1459: if ($perlvar{'lonBalancer'} eq 'yes') {
1460: $is_balancer = 1;
1461: $offloadto = &this_host_spares($dom_in_use);
1462: }
1463: unless (defined($cached)) {
1464: $domneedscache = $serverhomedom;
1465: }
1466: }
1467: if ($domneedscache) {
1468: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1469: }
1470: if ($is_balancer) {
1471: my $lowest_load = 30000;
1472: if (ref($offloadto) eq 'HASH') {
1473: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1474: foreach my $try_server (@{$offloadto->{'primary'}}) {
1475: ($otherserver,$lowest_load) =
1476: &compare_server_load($try_server,$otherserver,$lowest_load);
1477: }
1478: }
1479: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1480:
1481: if (!$found_server) {
1482: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1483: foreach my $try_server (@{$offloadto->{'default'}}) {
1484: ($otherserver,$lowest_load) =
1485: &compare_server_load($try_server,$otherserver,$lowest_load);
1486: }
1487: }
1488: }
1489: } elsif (ref($offloadto) eq 'ARRAY') {
1490: if (@{$offloadto} == 1) {
1491: $otherserver = $offloadto->[0];
1492: } elsif (@{$offloadto} > 1) {
1493: foreach my $try_server (@{$offloadto}) {
1494: ($otherserver,$lowest_load) =
1495: &compare_server_load($try_server,$otherserver,$lowest_load);
1496: }
1497: }
1498: }
1499: unless ($caller eq 'login') {
1500: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1501: $is_balancer = 0;
1502: if ($uname ne '' && $udom ne '') {
1503: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1504:
1505: &appenv({'user.loadbalexempt' => $lonhost,
1506: 'user.loadbalcheck.time' => time});
1507: }
1508: }
1509: }
1510: }
1511: }
1512: return ($is_balancer,$otherserver);
1513: }
1514:
1515: sub check_balancer_result {
1516: my ($result,@hosts) = @_;
1517: my ($is_balancer,$currtargets,$currrules);
1518: if (ref($result) eq 'HASH') {
1519: if ($result->{'lonhost'} ne '') {
1520: my $currbalancer = $result->{'lonhost'};
1521: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1522: $is_balancer = 1;
1523: $currtargets = $result->{'targets'};
1524: $currrules = $result->{'rules'};
1525: }
1526: } else {
1527: foreach my $key (keys(%{$result})) {
1528: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1529: (ref($result->{$key}) eq 'HASH')) {
1530: $is_balancer = 1;
1531: $currrules = $result->{$key}{'rules'};
1532: $currtargets = $result->{$key}{'targets'};
1533: last;
1534: }
1535: }
1536: }
1537: }
1538: return ($is_balancer,$currtargets,$currrules);
1539: }
1540:
1541: sub get_loadbalancer_targets {
1542: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1543: my $offloadto;
1544: if ($rule_in_effect eq 'none') {
1545: return [$perlvar{'lonHostID'}];
1546: } elsif ($rule_in_effect eq '') {
1547: $offloadto = $currtargets;
1548: } else {
1549: if ($rule_in_effect eq 'homeserver') {
1550: my $homeserver = &homeserver($uname,$udom);
1551: if ($homeserver ne 'no_host') {
1552: $offloadto = [$homeserver];
1553: }
1554: } elsif ($rule_in_effect eq 'externalbalancer') {
1555: my %domconfig =
1556: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1557: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1558: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1559: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1560: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1561: }
1562: }
1563: } else {
1564: my %servers = &internet_dom_servers($udom);
1565: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1566: if (&hostname($remotebalancer) ne '') {
1567: $offloadto = [$remotebalancer];
1568: }
1569: }
1570: } elsif (&hostname($rule_in_effect) ne '') {
1571: $offloadto = [$rule_in_effect];
1572: }
1573: }
1574: return $offloadto;
1575: }
1576:
1577: sub internet_dom_servers {
1578: my ($dom) = @_;
1579: my (%uniqservers,%servers);
1580: my $primaryserver = &hostname(&domain($dom,'primary'));
1581: my @machinedoms = &machine_domains($primaryserver);
1582: foreach my $mdom (@machinedoms) {
1583: my %currservers = %servers;
1584: my %server = &get_servers($mdom);
1585: %servers = (%currservers,%server);
1586: }
1587: my %by_hostname;
1588: foreach my $id (keys(%servers)) {
1589: push(@{$by_hostname{$servers{$id}}},$id);
1590: }
1591: foreach my $hostname (sort(keys(%by_hostname))) {
1592: if (@{$by_hostname{$hostname}} > 1) {
1593: my $match = 0;
1594: foreach my $id (@{$by_hostname{$hostname}}) {
1595: if (&host_domain($id) eq $dom) {
1596: $uniqservers{$id} = $hostname;
1597: $match = 1;
1598: }
1599: }
1600: unless ($match) {
1601: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1602: }
1603: } else {
1604: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1605: }
1606: }
1607: return %uniqservers;
1608: }
1609:
1610: sub trusted_domains {
1611: my ($cmdtype,$calldom) = @_;
1612: my ($trusted,$untrusted);
1613: if (&domain($calldom) eq '') {
1614: return ($trusted,$untrusted);
1615: }
1616: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1617: return ($trusted,$untrusted);
1618: }
1619: my $callprimary = &domain($calldom,'primary');
1620: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1621: if ($intcalldom eq '') {
1622: return ($trusted,$untrusted);
1623: }
1624:
1625: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1626: unless (defined($cached)) {
1627: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1628: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1629: $trustconfig = $domconfig{'trust'};
1630: }
1631: if (ref($trustconfig)) {
1632: my (%possexc,%possinc,@allexc,@allinc);
1633: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1634: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1635: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1636: }
1637: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1638: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1639: }
1640: }
1641: if (keys(%possexc)) {
1642: if (keys(%possinc)) {
1643: foreach my $key (sort(keys(%possexc))) {
1644: next if ($key eq $intcalldom);
1645: unless ($possinc{$key}) {
1646: push(@allexc,$key);
1647: }
1648: }
1649: } else {
1650: @allexc = sort(keys(%possexc));
1651: }
1652: }
1653: if (keys(%possinc)) {
1654: $possinc{$intcalldom} = 1;
1655: @allinc = sort(keys(%possinc));
1656: }
1657: if ((@allexc > 0) || (@allinc > 0)) {
1658: my %doms_by_intdom;
1659: my %allintdoms = &all_host_intdom();
1660: my %alldoms = &all_host_domain();
1661: foreach my $key (%allintdoms) {
1662: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1663: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1664: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1665: }
1666: } else {
1667: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1668: }
1669: }
1670: foreach my $exc (@allexc) {
1671: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1672: $untrusted = $doms_by_intdom{$exc};
1673: }
1674: }
1675: foreach my $inc (@allinc) {
1676: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1677: $trusted = $doms_by_intdom{$inc};
1678: }
1679: }
1680: }
1681: }
1682: return ($trusted,$untrusted);
1683: }
1684:
1685: sub will_trust {
1686: my ($cmdtype,$domain,$possdom) = @_;
1687: return 1 if ($domain eq $possdom);
1688: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1689: my $willtrust;
1690: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1691: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1692: $willtrust = 1;
1693: }
1694: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1695: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1696: $willtrust = 1;
1697: }
1698: } else {
1699: $willtrust = 1;
1700: }
1701: return $willtrust;
1702: }
1703:
1704: # ---------------------- Find the homebase for a user from domain's lib servers
1705:
1706: my %homecache;
1707: sub homeserver {
1708: my ($uname,$udom,$ignoreBadCache)=@_;
1709: my $index="$uname:$udom";
1710:
1711: if (exists($homecache{$index})) { return $homecache{$index}; }
1712:
1713: my %servers = &get_servers($udom,'library');
1714: foreach my $tryserver (keys(%servers)) {
1715: next if ($ignoreBadCache ne 'true' &&
1716: exists($badServerCache{$tryserver}));
1717:
1718: my $answer=reply("home:$udom:$uname",$tryserver);
1719: if ($answer eq 'found') {
1720: delete($badServerCache{$tryserver});
1721: return $homecache{$index}=$tryserver;
1722: } elsif ($answer eq 'no_host') {
1723: $badServerCache{$tryserver}=1;
1724: }
1725: }
1726: return 'no_host';
1727: }
1728:
1729: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1730:
1731: sub idget {
1732: my ($udom,$idsref,$namespace)=@_;
1733: my %returnhash=();
1734: my @ids=();
1735: if (ref($idsref) eq 'ARRAY') {
1736: @ids = @{$idsref};
1737: } else {
1738: return %returnhash;
1739: }
1740: if ($namespace eq '') {
1741: $namespace = 'ids';
1742: }
1743:
1744: my %servers = &get_servers($udom,'library');
1745: foreach my $tryserver (keys(%servers)) {
1746: my $idlist=join('&', map { &escape($_); } @ids);
1747: if ($namespace eq 'ids') {
1748: $idlist=~tr/A-Z/a-z/;
1749: }
1750: my $reply;
1751: if ($namespace eq 'ids') {
1752: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1753: } else {
1754: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1755: }
1756: my @answer=();
1757: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1758: @answer=split(/\&/,$reply);
1759: } ;
1760: my $i;
1761: for ($i=0;$i<=$#ids;$i++) {
1762: if ($answer[$i]) {
1763: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1764: }
1765: }
1766: }
1767: return %returnhash;
1768: }
1769:
1770: # ------------------------------------- Find the IDs behind a list of usernames
1771:
1772: sub idrget {
1773: my ($udom,@unames)=@_;
1774: my %returnhash=();
1775: foreach my $uname (@unames) {
1776: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1777: }
1778: return %returnhash;
1779: }
1780:
1781: # Store away a list of names and associated student/employee IDs or clicker IDs
1782:
1783: sub idput {
1784: my ($udom,$idsref,$uhom,$namespace)=@_;
1785: my %servers=();
1786: my %ids=();
1787: my %byid = ();
1788: if (ref($idsref) eq 'HASH') {
1789: %ids=%{$idsref};
1790: }
1791: if ($namespace eq '') {
1792: $namespace = 'ids';
1793: }
1794: foreach my $uname (keys(%ids)) {
1795: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1796: if ($uhom eq '') {
1797: $uhom=&homeserver($uname,$udom);
1798: }
1799: if ($uhom ne 'no_host') {
1800: my $esc_unam=&escape($uname);
1801: if ($namespace eq 'ids') {
1802: my $id=&escape($ids{$uname});
1803: $id=~tr/A-Z/a-z/;
1804: my $esc_unam=&escape($uname);
1805: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1806: } else {
1807: my @currids = split(/,/,$ids{$uname});
1808: foreach my $id (@currids) {
1809: $byid{$uhom}{$id} .= $uname.',';
1810: }
1811: }
1812: }
1813: }
1814: if ($namespace eq 'clickers') {
1815: foreach my $server (keys(%byid)) {
1816: if (ref($byid{$server}) eq 'HASH') {
1817: foreach my $id (keys(%{$byid{$server}})) {
1818: $byid{$server} =~ s/,$//;
1819: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1820: }
1821: }
1822: }
1823: }
1824: foreach my $server (keys(%servers)) {
1825: $servers{$server} =~ s/\&$//;
1826: if ($namespace eq 'ids') {
1827: &critical('idput:'.$udom.':'.$servers{$server},$server);
1828: } else {
1829: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1830: }
1831: }
1832: }
1833:
1834: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1835:
1836: sub iddel {
1837: my ($udom,$idshashref,$uhome,$namespace)=@_;
1838: my %result=();
1839: my %ids=();
1840: my %byid = ();
1841: if (ref($idshashref) eq 'HASH') {
1842: %ids=%{$idshashref};
1843: } else {
1844: return %result;
1845: }
1846: if ($namespace eq '') {
1847: $namespace = 'ids';
1848: }
1849: my %servers=();
1850: while (my ($id,$unamestr) = each(%ids)) {
1851: if ($namespace eq 'ids') {
1852: my $uhom = $uhome;
1853: if ($uhom eq '') {
1854: $uhom=&homeserver($unamestr,$udom);
1855: }
1856: if ($uhom ne 'no_host') {
1857: $servers{$uhom}.='&'.&escape($id);
1858: }
1859: } else {
1860: my @curritems = split(/,/,$ids{$id});
1861: foreach my $uname (@curritems) {
1862: my $uhom = $uhome;
1863: if ($uhom eq '') {
1864: $uhom=&homeserver($uname,$udom);
1865: }
1866: if ($uhom ne 'no_host') {
1867: $byid{$uhom}{$id} .= $uname.',';
1868: }
1869: }
1870: }
1871: }
1872: if ($namespace eq 'clickers') {
1873: foreach my $server (keys(%byid)) {
1874: if (ref($byid{$server}) eq 'HASH') {
1875: foreach my $id (keys(%{$byid{$server}})) {
1876: $byid{$server}{$id} =~ s/,$//;
1877: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1878: }
1879: }
1880: }
1881: }
1882: foreach my $server (keys(%servers)) {
1883: $servers{$server} =~ s/\&$//;
1884: if ($namespace eq 'ids') {
1885: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1886: } elsif ($namespace eq 'clickers') {
1887: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1888: }
1889: }
1890: return %result;
1891: }
1892:
1893: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1894:
1895: sub updateclickers {
1896: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1897: my %clickers;
1898: if (ref($idshashref) eq 'HASH') {
1899: %clickers=%{$idshashref};
1900: } else {
1901: return;
1902: }
1903: my $items='';
1904: foreach my $item (keys(%clickers)) {
1905: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1906: }
1907: $items=~s/\&$//;
1908: my $request = "updateclickers:$udom:$action:$items";
1909: if ($critical) {
1910: return &critical($request,$uhome);
1911: } else {
1912: return &reply($request,$uhome);
1913: }
1914: }
1915:
1916: # ------------------------------dump from db file owned by domainconfig user
1917: sub dump_dom {
1918: my ($namespace, $udom, $regexp) = @_;
1919:
1920: $udom ||= $env{'user.domain'};
1921:
1922: return () unless $udom;
1923:
1924: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1925: }
1926:
1927: # ------------------------------------------ get items from domain db files
1928:
1929: sub get_dom {
1930: my ($namespace,$storearr,$udom,$uhome)=@_;
1931: return if ($udom eq 'public');
1932: my $items='';
1933: foreach my $item (@$storearr) {
1934: $items.=&escape($item).'&';
1935: }
1936: $items=~s/\&$//;
1937: if (!$udom) {
1938: $udom=$env{'user.domain'};
1939: return if ($udom eq 'public');
1940: if (defined(&domain($udom,'primary'))) {
1941: $uhome=&domain($udom,'primary');
1942: } else {
1943: undef($uhome);
1944: }
1945: } else {
1946: if (!$uhome) {
1947: if (defined(&domain($udom,'primary'))) {
1948: $uhome=&domain($udom,'primary');
1949: }
1950: }
1951: }
1952: if ($udom && $uhome && ($uhome ne 'no_host')) {
1953: my $rep;
1954: if ($namespace =~ /^enc/) {
1955: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
1956: } else {
1957: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1958: }
1959: my %returnhash;
1960: if ($rep eq '' || $rep =~ /^error: 2 /) {
1961: return %returnhash;
1962: }
1963: my @pairs=split(/\&/,$rep);
1964: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1965: return @pairs;
1966: }
1967: my $i=0;
1968: foreach my $item (@$storearr) {
1969: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1970: $i++;
1971: }
1972: return %returnhash;
1973: } else {
1974: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1975: }
1976: }
1977:
1978: # -------------------------------------------- put items in domain db files
1979:
1980: sub put_dom {
1981: my ($namespace,$storehash,$udom,$uhome)=@_;
1982: if (!$udom) {
1983: $udom=$env{'user.domain'};
1984: if (defined(&domain($udom,'primary'))) {
1985: $uhome=&domain($udom,'primary');
1986: } else {
1987: undef($uhome);
1988: }
1989: } else {
1990: if (!$uhome) {
1991: if (defined(&domain($udom,'primary'))) {
1992: $uhome=&domain($udom,'primary');
1993: }
1994: }
1995: }
1996: if ($udom && $uhome && ($uhome ne 'no_host')) {
1997: my $items='';
1998: foreach my $item (keys(%$storehash)) {
1999: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2000: }
2001: $items=~s/\&$//;
2002: if ($namespace =~ /^enc/) {
2003: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2004: } else {
2005: return &reply("putdom:$udom:$namespace:$items",$uhome);
2006: }
2007: } else {
2008: &logthis("put_dom failed - no homeserver and/or domain");
2009: }
2010: }
2011:
2012: # --------------------- newput for items in db file owned by domainconfig user
2013: sub newput_dom {
2014: my ($namespace,$storehash,$udom) = @_;
2015: my $result;
2016: if (!$udom) {
2017: $udom=$env{'user.domain'};
2018: }
2019: if ($udom) {
2020: my $uname = &get_domainconfiguser($udom);
2021: $result = &newput($namespace,$storehash,$udom,$uname);
2022: }
2023: return $result;
2024: }
2025:
2026: # --------------------- delete for items in db file owned by domainconfig user
2027: sub del_dom {
2028: my ($namespace,$storearr,$udom)=@_;
2029: if (ref($storearr) eq 'ARRAY') {
2030: if (!$udom) {
2031: $udom=$env{'user.domain'};
2032: }
2033: if ($udom) {
2034: my $uname = &get_domainconfiguser($udom);
2035: return &del($namespace,$storearr,$udom,$uname);
2036: }
2037: }
2038: }
2039:
2040: # ----------------------------------construct domainconfig user for a domain
2041: sub get_domainconfiguser {
2042: my ($udom) = @_;
2043: return $udom.'-domainconfig';
2044: }
2045:
2046: sub retrieve_inst_usertypes {
2047: my ($udom) = @_;
2048: my (%returnhash,@order);
2049: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2050: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2051: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2052: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2053: } else {
2054: if (defined(&domain($udom,'primary'))) {
2055: my $uhome=&domain($udom,'primary');
2056: my $rep=&reply("inst_usertypes:$udom",$uhome);
2057: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2058: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2059: return (\%returnhash,\@order);
2060: }
2061: my ($hashitems,$orderitems) = split(/:/,$rep);
2062: my @pairs=split(/\&/,$hashitems);
2063: foreach my $item (@pairs) {
2064: my ($key,$value)=split(/=/,$item,2);
2065: $key = &unescape($key);
2066: next if ($key =~ /^error: 2 /);
2067: $returnhash{$key}=&thaw_unescape($value);
2068: }
2069: my @esc_order = split(/\&/,$orderitems);
2070: foreach my $item (@esc_order) {
2071: push(@order,&unescape($item));
2072: }
2073: } else {
2074: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2075: }
2076: return (\%returnhash,\@order);
2077: }
2078: }
2079:
2080: sub is_domainimage {
2081: my ($url) = @_;
2082: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2083: if (&domain($1) ne '') {
2084: return '1';
2085: }
2086: }
2087: return;
2088: }
2089:
2090: sub inst_directory_query {
2091: my ($srch) = @_;
2092: my $udom = $srch->{'srchdomain'};
2093: my %results;
2094: my $homeserver = &domain($udom,'primary');
2095: my $outcome;
2096: if ($homeserver ne '') {
2097: unless ($homeserver eq $perlvar{'lonHostID'}) {
2098: if ($srch->{'srchby'} eq 'email') {
2099: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2100: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2101: if (($major eq '' && $minor eq '') || ($major < 2) ||
2102: (($major == 2) && ($minor < 12))) {
2103: return;
2104: }
2105: }
2106: }
2107: my $queryid=&reply("querysend:instdirsearch:".
2108: &escape($srch->{'srchby'}).':'.
2109: &escape($srch->{'srchterm'}).':'.
2110: &escape($srch->{'srchtype'}),$homeserver);
2111: my $host=&hostname($homeserver);
2112: if ($queryid !~/^\Q$host\E\_/) {
2113: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2114: return;
2115: }
2116: my $response = &get_query_reply($queryid);
2117: my $maxtries = 5;
2118: my $tries = 1;
2119: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2120: $response = &get_query_reply($queryid);
2121: $tries ++;
2122: }
2123:
2124: if (!&error($response) && $response ne 'refused') {
2125: if ($response eq 'unavailable') {
2126: $outcome = $response;
2127: } else {
2128: $outcome = 'ok';
2129: my @matches = split(/\n/,$response);
2130: foreach my $match (@matches) {
2131: my ($key,$value) = split(/=/,$match);
2132: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2133: }
2134: }
2135: }
2136: }
2137: return ($outcome,%results);
2138: }
2139:
2140: sub usersearch {
2141: my ($srch) = @_;
2142: my $dom = $srch->{'srchdomain'};
2143: my %results;
2144: my %libserv = &all_library();
2145: my $query = 'usersearch';
2146: foreach my $tryserver (keys(%libserv)) {
2147: if (&host_domain($tryserver) eq $dom) {
2148: unless ($tryserver eq $perlvar{'lonHostID'}) {
2149: if ($srch->{'srchby'} eq 'email') {
2150: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2151: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2152: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2153: (($major == 2) && ($minor < 12)));
2154: }
2155: }
2156: my $host=&hostname($tryserver);
2157: my $queryid=
2158: &reply("querysend:".&escape($query).':'.
2159: &escape($srch->{'srchby'}).':'.
2160: &escape($srch->{'srchtype'}).':'.
2161: &escape($srch->{'srchterm'}),$tryserver);
2162: if ($queryid !~/^\Q$host\E\_/) {
2163: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2164: next;
2165: }
2166: my $reply = &get_query_reply($queryid);
2167: my $maxtries = 1;
2168: my $tries = 1;
2169: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2170: $reply = &get_query_reply($queryid);
2171: $tries ++;
2172: }
2173: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2174: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2175: } else {
2176: my @matches;
2177: if ($reply =~ /\n/) {
2178: @matches = split(/\n/,$reply);
2179: } else {
2180: @matches = split(/\&/,$reply);
2181: }
2182: foreach my $match (@matches) {
2183: my ($uname,$udom,%userhash);
2184: foreach my $entry (split(/:/,$match)) {
2185: my ($key,$value) =
2186: map {&unescape($_);} split(/=/,$entry);
2187: $userhash{$key} = $value;
2188: if ($key eq 'username') {
2189: $uname = $value;
2190: } elsif ($key eq 'domain') {
2191: $udom = $value;
2192: }
2193: }
2194: $results{$uname.':'.$udom} = \%userhash;
2195: }
2196: }
2197: }
2198: }
2199: return %results;
2200: }
2201:
2202: sub get_instuser {
2203: my ($udom,$uname,$id) = @_;
2204: my $homeserver = &domain($udom,'primary');
2205: my ($outcome,%results);
2206: if ($homeserver ne '') {
2207: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2208: &escape($id).':'.&escape($udom),$homeserver);
2209: my $host=&hostname($homeserver);
2210: if ($queryid !~/^\Q$host\E\_/) {
2211: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2212: return;
2213: }
2214: my $response = &get_query_reply($queryid);
2215: my $maxtries = 5;
2216: my $tries = 1;
2217: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2218: $response = &get_query_reply($queryid);
2219: $tries ++;
2220: }
2221: if (!&error($response) && $response ne 'refused') {
2222: if ($response eq 'unavailable') {
2223: $outcome = $response;
2224: } else {
2225: $outcome = 'ok';
2226: my @matches = split(/\n/,$response);
2227: foreach my $match (@matches) {
2228: my ($key,$value) = split(/=/,$match);
2229: $results{&unescape($key)} = &thaw_unescape($value);
2230: }
2231: }
2232: }
2233: }
2234: my %userinfo;
2235: if (ref($results{$uname}) eq 'HASH') {
2236: %userinfo = %{$results{$uname}};
2237: }
2238: return ($outcome,%userinfo);
2239: }
2240:
2241: sub get_multiple_instusers {
2242: my ($udom,$users,$caller) = @_;
2243: my ($outcome,$results);
2244: if (ref($users) eq 'HASH') {
2245: my $count = keys(%{$users});
2246: my $requested = &freeze_escape($users);
2247: my $homeserver = &domain($udom,'primary');
2248: if ($homeserver ne '') {
2249: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2250: my $host=&hostname($homeserver);
2251: if ($queryid !~/^\Q$host\E\_/) {
2252: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2253: ' for host: '.$homeserver.'in domain '.$udom);
2254: return ($outcome,$results);
2255: }
2256: my $response = &get_query_reply($queryid);
2257: my $maxtries = 5;
2258: if ($count > 100) {
2259: $maxtries = 1+int($count/20);
2260: }
2261: my $tries = 1;
2262: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2263: $response = &get_query_reply($queryid);
2264: $tries ++;
2265: }
2266: if ($response eq '') {
2267: $results = {};
2268: foreach my $key (keys(%{$users})) {
2269: my ($uname,$id);
2270: if ($caller eq 'id') {
2271: $id = $key;
2272: } else {
2273: $uname = $key;
2274: }
2275: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2276: $outcome = $resp;
2277: if ($resp eq 'ok') {
2278: %{$results} = (%{$results}, %info);
2279: } else {
2280: last;
2281: }
2282: }
2283: } elsif(!&error($response) && ($response ne 'refused')) {
2284: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2285: $outcome = $response;
2286: } else {
2287: ($outcome,my $userdata) = split(/=/,$response,2);
2288: if ($outcome eq 'ok') {
2289: $results = &thaw_unescape($userdata);
2290: }
2291: }
2292: }
2293: }
2294: }
2295: return ($outcome,$results);
2296: }
2297:
2298: sub inst_rulecheck {
2299: my ($udom,$uname,$id,$item,$rules) = @_;
2300: my %returnhash;
2301: if ($udom ne '') {
2302: if (ref($rules) eq 'ARRAY') {
2303: @{$rules} = map {&escape($_);} (@{$rules});
2304: my $rulestr = join(':',@{$rules});
2305: my $homeserver=&domain($udom,'primary');
2306: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2307: my $response;
2308: if ($item eq 'username') {
2309: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2310: ':'.&escape($uname).':'.$rulestr,
2311: $homeserver));
2312: } elsif ($item eq 'id') {
2313: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2314: ':'.&escape($id).':'.$rulestr,
2315: $homeserver));
2316: } elsif ($item eq 'selfcreate') {
2317: $response=&unescape(&reply('instselfcreatecheck:'.
2318: &escape($udom).':'.&escape($uname).
2319: ':'.$rulestr,$homeserver));
2320: }
2321: if ($response ne 'refused') {
2322: my @pairs=split(/\&/,$response);
2323: foreach my $item (@pairs) {
2324: my ($key,$value)=split(/=/,$item,2);
2325: $key = &unescape($key);
2326: next if ($key =~ /^error: 2 /);
2327: $returnhash{$key}=&thaw_unescape($value);
2328: }
2329: }
2330: }
2331: }
2332: }
2333: return %returnhash;
2334: }
2335:
2336: sub inst_userrules {
2337: my ($udom,$check) = @_;
2338: my (%ruleshash,@ruleorder);
2339: if ($udom ne '') {
2340: my $homeserver=&domain($udom,'primary');
2341: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2342: my $response;
2343: if ($check eq 'id') {
2344: $response=&reply('instidrules:'.&escape($udom),
2345: $homeserver);
2346: } elsif ($check eq 'email') {
2347: $response=&reply('instemailrules:'.&escape($udom),
2348: $homeserver);
2349: } else {
2350: $response=&reply('instuserrules:'.&escape($udom),
2351: $homeserver);
2352: }
2353: if (($response ne 'refused') && ($response ne 'error') &&
2354: ($response ne 'unknown_cmd') &&
2355: ($response ne 'no_such_host')) {
2356: my ($hashitems,$orderitems) = split(/:/,$response);
2357: my @pairs=split(/\&/,$hashitems);
2358: foreach my $item (@pairs) {
2359: my ($key,$value)=split(/=/,$item,2);
2360: $key = &unescape($key);
2361: next if ($key =~ /^error: 2 /);
2362: $ruleshash{$key}=&thaw_unescape($value);
2363: }
2364: my @esc_order = split(/\&/,$orderitems);
2365: foreach my $item (@esc_order) {
2366: push(@ruleorder,&unescape($item));
2367: }
2368: }
2369: }
2370: }
2371: return (\%ruleshash,\@ruleorder);
2372: }
2373:
2374: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2375:
2376: sub get_domain_defaults {
2377: my ($domain,$ignore_cache) = @_;
2378: return if (($domain eq '') || ($domain eq 'public'));
2379: my $cachetime = 60*60*24;
2380: unless ($ignore_cache) {
2381: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2382: if (defined($cached)) {
2383: if (ref($result) eq 'HASH') {
2384: return %{$result};
2385: }
2386: }
2387: }
2388: my %domdefaults;
2389: my %domconfig =
2390: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2391: 'requestcourses','inststatus',
2392: 'coursedefaults','usersessions',
2393: 'requestauthor','selfenrollment',
2394: 'coursecategories','ssl','autoenroll',
2395: 'trust','helpsettings'],$domain);
2396: my @coursetypes = ('official','unofficial','community','textbook','placement');
2397: if (ref($domconfig{'defaults'}) eq 'HASH') {
2398: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2399: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2400: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2401: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2402: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2403: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2404: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2405: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2406: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2407: } else {
2408: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2409: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2410: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2411: }
2412: if (ref($domconfig{'quotas'}) eq 'HASH') {
2413: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2414: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2415: } else {
2416: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2417: }
2418: my @usertools = ('aboutme','blog','webdav','portfolio');
2419: foreach my $item (@usertools) {
2420: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2421: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2422: }
2423: }
2424: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2425: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2426: }
2427: }
2428: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2429: foreach my $item ('official','unofficial','community','textbook','placement') {
2430: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2431: }
2432: }
2433: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2434: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2435: }
2436: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2437: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2438: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2439: }
2440: }
2441: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2442: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2443: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2444: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2445: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2446: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2447: }
2448: foreach my $type (@coursetypes) {
2449: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2450: unless ($type eq 'community') {
2451: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2452: }
2453: }
2454: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2455: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2456: }
2457: if ($domdefaults{'postsubmit'} eq 'on') {
2458: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2459: $domdefaults{$type.'postsubtimeout'} =
2460: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2461: }
2462: }
2463: }
2464: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2465: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2466: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2467: if (@clonecodes) {
2468: $domdefaults{'canclone'} = join('+',@clonecodes);
2469: }
2470: }
2471: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2472: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2473: }
2474: if ($domconfig{'coursedefaults'}{'texengine'}) {
2475: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2476: }
2477: }
2478: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2479: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2480: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2481: }
2482: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2483: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2484: }
2485: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2486: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2487: }
2488: }
2489: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2490: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2491: my @settings = ('types','registered','enroll_dates','access_dates','section',
2492: 'approval','limit');
2493: foreach my $type (@coursetypes) {
2494: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2495: my @mgrdc = ();
2496: foreach my $item (@settings) {
2497: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2498: push(@mgrdc,$item);
2499: }
2500: }
2501: if (@mgrdc) {
2502: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2503: }
2504: }
2505: }
2506: }
2507: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2508: foreach my $type (@coursetypes) {
2509: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2510: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2511: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2512: }
2513: }
2514: }
2515: }
2516: }
2517: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2518: $domdefaults{'catauth'} = 'std';
2519: $domdefaults{'catunauth'} = 'std';
2520: if ($domconfig{'coursecategories'}{'auth'}) {
2521: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2522: }
2523: if ($domconfig{'coursecategories'}{'unauth'}) {
2524: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2525: }
2526: }
2527: if (ref($domconfig{'ssl'}) eq 'HASH') {
2528: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2529: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2530: }
2531: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2532: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2533: }
2534: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2535: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2536: }
2537: }
2538: if (ref($domconfig{'trust'}) eq 'HASH') {
2539: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2540: foreach my $prefix (@prefixes) {
2541: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2542: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2543: }
2544: }
2545: }
2546: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2547: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2548: }
2549: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2550: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2551: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2552: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2553: }
2554: }
2555: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2556: return %domdefaults;
2557: }
2558:
2559: sub course_portal_url {
2560: my ($cnum,$cdom) = @_;
2561: my $chome = &homeserver($cnum,$cdom);
2562: my $hostname = &hostname($chome);
2563: my $protocol = $protocol{$chome};
2564: $protocol = 'http' if ($protocol ne 'https');
2565: my %domdefaults = &get_domain_defaults($cdom);
2566: my $firsturl;
2567: if ($domdefaults{'portal_def'}) {
2568: $firsturl = $domdefaults{'portal_def'};
2569: } else {
2570: $firsturl = $protocol.'://'.$hostname;
2571: }
2572: return $firsturl;
2573: }
2574:
2575: # --------------------------------------------------- Assign a key to a student
2576:
2577: sub assign_access_key {
2578: #
2579: # a valid key looks like uname:udom#comments
2580: # comments are being appended
2581: #
2582: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2583: $kdom=
2584: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2585: $knum=
2586: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2587: $cdom=
2588: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2589: $cnum=
2590: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2591: $udom=$env{'user.name'} unless (defined($udom));
2592: $uname=$env{'user.domain'} unless (defined($uname));
2593: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2594: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2595: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2596: # assigned to this person
2597: # - this should not happen,
2598: # unless something went wrong
2599: # the first time around
2600: # ready to assign
2601: $logentry=$1.'; '.$logentry;
2602: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2603: $kdom,$knum) eq 'ok') {
2604: # key now belongs to user
2605: my $envkey='key.'.$cdom.'_'.$cnum;
2606: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2607: &appenv({'environment.'.$envkey => $ckey});
2608: return 'ok';
2609: } else {
2610: return
2611: 'error: Count not permanently assign key, will need to be re-entered later.';
2612: }
2613: } else {
2614: return 'error: Could not assign key, try again later.';
2615: }
2616: } elsif (!$existing{$ckey}) {
2617: # the key does not exist
2618: return 'error: The key does not exist';
2619: } else {
2620: # the key is somebody else's
2621: return 'error: The key is already in use';
2622: }
2623: }
2624:
2625: # ------------------------------------------ put an additional comment on a key
2626:
2627: sub comment_access_key {
2628: #
2629: # a valid key looks like uname:udom#comments
2630: # comments are being appended
2631: #
2632: my ($ckey,$cdom,$cnum,$logentry)=@_;
2633: $cdom=
2634: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2635: $cnum=
2636: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2637: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2638: if ($existing{$ckey}) {
2639: $existing{$ckey}.='; '.$logentry;
2640: # ready to assign
2641: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2642: $cdom,$cnum) eq 'ok') {
2643: return 'ok';
2644: } else {
2645: return 'error: Count not store comment.';
2646: }
2647: } else {
2648: # the key does not exist
2649: return 'error: The key does not exist';
2650: }
2651: }
2652:
2653: # ------------------------------------------------------ Generate a set of keys
2654:
2655: sub generate_access_keys {
2656: my ($number,$cdom,$cnum,$logentry)=@_;
2657: $cdom=
2658: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2659: $cnum=
2660: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2661: unless (&allowed('mky',$cdom)) { return 0; }
2662: unless (($cdom) && ($cnum)) { return 0; }
2663: if ($number>10000) { return 0; }
2664: sleep(2); # make sure don't get same seed twice
2665: srand(time()^($$+($$<<15))); # from "Programming Perl"
2666: my $total=0;
2667: for (my $i=1;$i<=$number;$i++) {
2668: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2669: sprintf("%lx",int(100000*rand)).'-'.
2670: sprintf("%lx",int(100000*rand));
2671: $newkey=~s/1/g/g; # folks mix up 1 and l
2672: $newkey=~s/0/h/g; # and also 0 and O
2673: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2674: if ($existing{$newkey}) {
2675: $i--;
2676: } else {
2677: if (&put('accesskeys',
2678: { $newkey => '# generated '.localtime().
2679: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2680: '; '.$logentry },
2681: $cdom,$cnum) eq 'ok') {
2682: $total++;
2683: }
2684: }
2685: }
2686: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2687: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2688: return $total;
2689: }
2690:
2691: # ------------------------------------------------------- Validate an accesskey
2692:
2693: sub validate_access_key {
2694: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2695: $cdom=
2696: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2697: $cnum=
2698: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2699: $udom=$env{'user.domain'} unless (defined($udom));
2700: $uname=$env{'user.name'} unless (defined($uname));
2701: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2702: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2703: }
2704:
2705: # ------------------------------------- Find the section of student in a course
2706: sub devalidate_getsection_cache {
2707: my ($udom,$unam,$courseid)=@_;
2708: my $hashid="$udom:$unam:$courseid";
2709: &devalidate_cache_new('getsection',$hashid);
2710: }
2711:
2712: sub courseid_to_courseurl {
2713: my ($courseid) = @_;
2714: #already url style courseid
2715: return $courseid if ($courseid =~ m{^/});
2716:
2717: if (exists($env{'course.'.$courseid.'.num'})) {
2718: my $cnum = $env{'course.'.$courseid.'.num'};
2719: my $cdom = $env{'course.'.$courseid.'.domain'};
2720: return "/$cdom/$cnum";
2721: }
2722:
2723: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2724: if (exists($courseinfo{'num'})) {
2725: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2726: }
2727:
2728: return undef;
2729: }
2730:
2731: sub getsection {
2732: my ($udom,$unam,$courseid)=@_;
2733: my $cachetime=1800;
2734:
2735: my $hashid="$udom:$unam:$courseid";
2736: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2737: if (defined($cached)) { return $result; }
2738:
2739: my %Pending;
2740: my %Expired;
2741: #
2742: # Each role can either have not started yet (pending), be active,
2743: # or have expired.
2744: #
2745: # If there is an active role, we are done.
2746: #
2747: # If there is more than one role which has not started yet,
2748: # choose the one which will start sooner
2749: # If there is one role which has not started yet, return it.
2750: #
2751: # If there is more than one expired role, choose the one which ended last.
2752: # If there is a role which has expired, return it.
2753: #
2754: $courseid = &courseid_to_courseurl($courseid);
2755: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2756: foreach my $key (keys(%roleshash)) {
2757: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2758: my $section=$1;
2759: if ($key eq $courseid.'_st') { $section=''; }
2760: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2761: my $now=time;
2762: if (defined($end) && $end && ($now > $end)) {
2763: $Expired{$end}=$section;
2764: next;
2765: }
2766: if (defined($start) && $start && ($now < $start)) {
2767: $Pending{$start}=$section;
2768: next;
2769: }
2770: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2771: }
2772: #
2773: # Presumedly there will be few matching roles from the above
2774: # loop and the sorting time will be negligible.
2775: if (scalar(keys(%Pending))) {
2776: my ($time) = sort {$a <=> $b} keys(%Pending);
2777: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2778: }
2779: if (scalar(keys(%Expired))) {
2780: my @sorted = sort {$a <=> $b} keys(%Expired);
2781: my $time = pop(@sorted);
2782: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2783: }
2784: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2785: }
2786:
2787: sub save_cache {
2788: &purge_remembered();
2789: #&Apache::loncommon::validate_page();
2790: undef(%env);
2791: undef($env_loaded);
2792: }
2793:
2794: my $to_remember=-1;
2795: my %remembered;
2796: my %accessed;
2797: my $kicks=0;
2798: my $hits=0;
2799: sub make_key {
2800: my ($name,$id) = @_;
2801: if (length($id) > 65
2802: && length(&escape($id)) > 200) {
2803: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2804: }
2805: return &escape($name.':'.$id);
2806: }
2807:
2808: sub devalidate_cache_new {
2809: my ($name,$id,$debug) = @_;
2810: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2811: my $remembered_id=$name.':'.$id;
2812: $id=&make_key($name,$id);
2813: $memcache->delete($id);
2814: delete($remembered{$remembered_id});
2815: delete($accessed{$remembered_id});
2816: }
2817:
2818: sub is_cached_new {
2819: my ($name,$id,$debug) = @_;
2820: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2821: if (exists($remembered{$remembered_id})) {
2822: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2823: $accessed{$remembered_id}=[&gettimeofday()];
2824: $hits++;
2825: return ($remembered{$remembered_id},1);
2826: }
2827: $id=&make_key($name,$id);
2828: my $value = $memcache->get($id);
2829: if (!(defined($value))) {
2830: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2831: return (undef,undef);
2832: }
2833: if ($value eq '__undef__') {
2834: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2835: $value=undef;
2836: }
2837: &make_room($remembered_id,$value,$debug);
2838: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2839: return ($value,1);
2840: }
2841:
2842: sub do_cache_new {
2843: my ($name,$id,$value,$time,$debug) = @_;
2844: my $remembered_id=$name.':'.$id;
2845: $id=&make_key($name,$id);
2846: my $setvalue=$value;
2847: if (!defined($setvalue)) {
2848: $setvalue='__undef__';
2849: }
2850: if (!defined($time) ) {
2851: $time=600;
2852: }
2853: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2854: my $result = $memcache->set($id,$setvalue,$time);
2855: if (! $result) {
2856: &logthis("caching of id -> $id failed");
2857: $memcache->disconnect_all();
2858: }
2859: # need to make a copy of $value
2860: &make_room($remembered_id,$value,$debug);
2861: return $value;
2862: }
2863:
2864: sub make_room {
2865: my ($remembered_id,$value,$debug)=@_;
2866:
2867: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2868: : $value;
2869: if ($to_remember<0) { return; }
2870: $accessed{$remembered_id}=[&gettimeofday()];
2871: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2872: my $to_kick;
2873: my $max_time=0;
2874: foreach my $other (keys(%accessed)) {
2875: if (&tv_interval($accessed{$other}) > $max_time) {
2876: $to_kick=$other;
2877: $max_time=&tv_interval($accessed{$other});
2878: }
2879: }
2880: delete($remembered{$to_kick});
2881: delete($accessed{$to_kick});
2882: $kicks++;
2883: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2884: return;
2885: }
2886:
2887: sub purge_remembered {
2888: #&logthis("Tossing ".scalar(keys(%remembered)));
2889: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2890: undef(%remembered);
2891: undef(%accessed);
2892: }
2893: # ------------------------------------- Read an entry from a user's environment
2894:
2895: sub userenvironment {
2896: my ($udom,$unam,@what)=@_;
2897: my $items;
2898: foreach my $item (@what) {
2899: $items.=&escape($item).'&';
2900: }
2901: $items=~s/\&$//;
2902: my %returnhash=();
2903: my $uhome = &homeserver($unam,$udom);
2904: unless ($uhome eq 'no_host') {
2905: my @answer=split(/\&/,
2906: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2907: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2908: return %returnhash;
2909: }
2910: my $i;
2911: for ($i=0;$i<=$#what;$i++) {
2912: $returnhash{$what[$i]}=&unescape($answer[$i]);
2913: }
2914: }
2915: return %returnhash;
2916: }
2917:
2918: # ---------------------------------------------------------- Get a studentphoto
2919: sub studentphoto {
2920: my ($udom,$unam,$ext) = @_;
2921: my $home=&Apache::lonnet::homeserver($unam,$udom);
2922: if (defined($env{'request.course.id'})) {
2923: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2924: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2925: return(&retrievestudentphoto($udom,$unam,$ext));
2926: } else {
2927: my ($result,$perm_reqd)=
2928: &Apache::lonnet::auto_photo_permission($unam,$udom);
2929: if ($result eq 'ok') {
2930: if (!($perm_reqd eq 'yes')) {
2931: return(&retrievestudentphoto($udom,$unam,$ext));
2932: }
2933: }
2934: }
2935: }
2936: } else {
2937: my ($result,$perm_reqd) =
2938: &Apache::lonnet::auto_photo_permission($unam,$udom);
2939: if ($result eq 'ok') {
2940: if (!($perm_reqd eq 'yes')) {
2941: return(&retrievestudentphoto($udom,$unam,$ext));
2942: }
2943: }
2944: }
2945: return '/adm/lonKaputt/lonlogo_broken.gif';
2946: }
2947:
2948: sub retrievestudentphoto {
2949: my ($udom,$unam,$ext,$type) = @_;
2950: my $home=&Apache::lonnet::homeserver($unam,$udom);
2951: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2952: if ($ret eq 'ok') {
2953: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2954: if ($type eq 'thumbnail') {
2955: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2956: }
2957: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2958: return $tokenurl;
2959: } else {
2960: if ($type eq 'thumbnail') {
2961: return '/adm/lonKaputt/genericstudent_tn.gif';
2962: } else {
2963: return '/adm/lonKaputt/lonlogo_broken.gif';
2964: }
2965: }
2966: }
2967:
2968: # -------------------------------------------------------------------- New chat
2969:
2970: sub chatsend {
2971: my ($newentry,$anon,$group)=@_;
2972: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2973: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2974: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2975: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2976: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2977: &escape($newentry)).':'.$group,$chome);
2978: }
2979:
2980: # ------------------------------------------ Find current version of a resource
2981:
2982: sub getversion {
2983: my $fname=&clutter(shift);
2984: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2985: return ¤tversion(&filelocation('',$fname));
2986: }
2987:
2988: sub currentversion {
2989: my $fname=shift;
2990: my $author=$fname;
2991: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2992: my ($udom,$uname)=split(/\//,$author);
2993: my $home=&homeserver($uname,$udom);
2994: if ($home eq 'no_host') {
2995: return -1;
2996: }
2997: my $answer=&reply("currentversion:$fname",$home);
2998: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2999: return -1;
3000: }
3001: return $answer;
3002: }
3003:
3004: #
3005: # Return special version number of resource if set by override, empty otherwise
3006: #
3007: sub usedversion {
3008: my $fname=shift;
3009: unless ($fname) { $fname=$env{'request.uri'}; }
3010: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3011: if ($urlversion) { return $urlversion; }
3012: return '';
3013: }
3014:
3015: # ----------------------------- Subscribe to a resource, return URL if possible
3016:
3017: sub subscribe {
3018: my $fname=shift;
3019: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3020: $fname=~s/[\n\r]//g;
3021: my $author=$fname;
3022: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3023: my ($udom,$uname)=split(/\//,$author);
3024: my $home=homeserver($uname,$udom);
3025: if ($home eq 'no_host') {
3026: return 'not_found';
3027: }
3028: my $answer=reply("sub:$fname",$home);
3029: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3030: $answer.=' by '.$home;
3031: }
3032: return $answer;
3033: }
3034:
3035: # -------------------------------------------------------------- Replicate file
3036:
3037: sub repcopy {
3038: my $filename=shift;
3039: $filename=~s/\/+/\//g;
3040: my $londocroot = $perlvar{'lonDocRoot'};
3041: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3042: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3043: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3044: $filename=~m{^/*(uploaded|editupload)/}) {
3045: return &repcopy_userfile($filename);
3046: }
3047: $filename=~s/[\n\r]//g;
3048: my $transname="$filename.in.transfer";
3049: # FIXME: this should flock
3050: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3051: my $remoteurl=subscribe($filename);
3052: if ($remoteurl =~ /^con_lost by/) {
3053: &logthis("Subscribe returned $remoteurl: $filename");
3054: return 'unavailable';
3055: } elsif ($remoteurl eq 'not_found') {
3056: #&logthis("Subscribe returned not_found: $filename");
3057: return 'not_found';
3058: } elsif ($remoteurl =~ /^rejected by/) {
3059: &logthis("Subscribe returned $remoteurl: $filename");
3060: return 'forbidden';
3061: } elsif ($remoteurl eq 'directory') {
3062: return 'ok';
3063: } else {
3064: my $author=$filename;
3065: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3066: my ($udom,$uname)=split(/\//,$author);
3067: my $home=homeserver($uname,$udom);
3068: unless ($home eq $perlvar{'lonHostID'}) {
3069: my @parts=split(/\//,$filename);
3070: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3071: if ($path ne "$londocroot/res") {
3072: &logthis("Malconfiguration for replication: $filename");
3073: return 'bad_request';
3074: }
3075: my $count;
3076: for ($count=5;$count<$#parts;$count++) {
3077: $path.="/$parts[$count]";
3078: if ((-e $path)!=1) {
3079: mkdir($path,0777);
3080: }
3081: }
3082: my $request=new HTTP::Request('GET',"$remoteurl");
3083: my $response;
3084: if ($remoteurl =~ m{/raw/}) {
3085: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3086: } else {
3087: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3088: }
3089: if ($response->is_error()) {
3090: unlink($transname);
3091: my $message=$response->status_line;
3092: &logthis("<font color=\"blue\">WARNING:"
3093: ." LWP get: $message: $filename</font>");
3094: return 'unavailable';
3095: } else {
3096: if ($remoteurl!~/\.meta$/) {
3097: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3098: my $mresponse;
3099: if ($remoteurl =~ m{/raw/}) {
3100: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3101: } else {
3102: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3103: }
3104: if ($mresponse->is_error()) {
3105: unlink($filename.'.meta');
3106: &logthis(
3107: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3108: }
3109: }
3110: rename($transname,$filename);
3111: return 'ok';
3112: }
3113: }
3114: }
3115: }
3116:
3117: # ------------------------------------------------ Get server side include body
3118: sub ssi_body {
3119: my ($filelink,%form)=@_;
3120: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3121: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3122: }
3123: my $output='';
3124: my $response;
3125: if ($filelink=~/^https?\:/) {
3126: ($output,$response)=&externalssi($filelink);
3127: } else {
3128: $filelink .= $filelink=~/\?/ ? '&' : '?';
3129: $filelink .= 'inhibitmenu=yes';
3130: ($output,$response)=&ssi($filelink,%form);
3131: }
3132: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3133: $output=~s/^.*?\<body[^\>]*\>//si;
3134: $output=~s/\<\/body\s*\>.*?$//si;
3135: if (wantarray) {
3136: return ($output, $response);
3137: } else {
3138: return $output;
3139: }
3140: }
3141:
3142: # --------------------------------------------------------- Server Side Include
3143:
3144: sub absolute_url {
3145: my ($host_name) = @_;
3146: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3147: if ($host_name eq '') {
3148: $host_name = $ENV{'SERVER_NAME'};
3149: }
3150: return $protocol.$host_name;
3151: }
3152:
3153: #
3154: # Server side include.
3155: # Parameters:
3156: # fn Possibly encrypted resource name/id.
3157: # form Hash that describes how the rendering should be done
3158: # and other things.
3159: # Returns:
3160: # Scalar context: The content of the response.
3161: # Array context: 2 element list of the content and the full response object.
3162: #
3163: sub ssi {
3164:
3165: my ($fn,%form)=@_;
3166: my $request;
3167:
3168: $form{'no_update_last_known'}=1;
3169: &Apache::lonenc::check_encrypt(\$fn);
3170: if (%form) {
3171: $request=new HTTP::Request('POST',&absolute_url().$fn);
3172: $request->content(join('&',map {
3173: my $name = escape($_);
3174: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3175: ? join("&$name=", map {escape($_) } @{$form{$_}})
3176: : &escape($form{$_}) );
3177: } keys(%form)));
3178: } else {
3179: $request=new HTTP::Request('GET',&absolute_url().$fn);
3180: }
3181:
3182: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3183: my $lonhost = $perlvar{'lonHostID'};
3184: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar);
3185:
3186: if (wantarray) {
3187: return ($response->content, $response);
3188: } else {
3189: return $response->content;
3190: }
3191: }
3192:
3193: sub externalssi {
3194: my ($url)=@_;
3195: my $request=new HTTP::Request('GET',$url);
3196: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3197: if (wantarray) {
3198: return ($response->content, $response);
3199: } else {
3200: return $response->content;
3201: }
3202: }
3203:
3204:
3205: # If the local copy of a replicated resource is outdated, trigger a
3206: # connection from the homeserver to flush the delayed queue. If no update
3207: # happens, remove local copies of outdated resource (and corresponding
3208: # metadata file).
3209:
3210: sub remove_stale_resfile {
3211: my ($url) = @_;
3212: my $removed;
3213: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3214: my $audom = $1;
3215: my $auname = $2;
3216: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3217: my $homeserver = &homeserver($auname,$audom);
3218: unless (($homeserver eq 'no_host') ||
3219: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3220: my $fname = &filelocation('',$url);
3221: if (-e $fname) {
3222: my $protocol = $protocol{$homeserver};
3223: $protocol = 'http' if ($protocol ne 'https');
3224: my $hostname = &hostname($homeserver);
3225: if ($hostname) {
3226: my $uri = &declutter($url);
3227: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3228: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3229: if ($response->is_success()) {
3230: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3231: my $locmodtime = (stat($fname))[9];
3232: if ($locmodtime < $remmodtime) {
3233: my $stale;
3234: my $answer = &reply('pong',$homeserver);
3235: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3236: sleep(0.2);
3237: $locmodtime = (stat($fname))[9];
3238: if ($locmodtime < $remmodtime) {
3239: my $posstransfer = $fname.'.in.transfer';
3240: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3241: $removed = 1;
3242: } else {
3243: $stale = 1;
3244: }
3245: } else {
3246: $removed = 1;
3247: }
3248: } else {
3249: $stale = 1;
3250: }
3251: if ($stale) {
3252: unlink($fname);
3253: if ($uri!~/\.meta$/) {
3254: unlink($fname.'.meta');
3255: }
3256: &reply("unsub:$fname",$homeserver);
3257: $removed = 1;
3258: }
3259: }
3260: }
3261: }
3262: }
3263: }
3264: }
3265: }
3266: return $removed;
3267: }
3268:
3269: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3270:
3271: sub allowuploaded {
3272: my ($srcurl,$url)=@_;
3273: $url=&clutter(&declutter($url));
3274: my $dir=$url;
3275: $dir=~s/\/[^\/]+$//;
3276: my %httpref=();
3277: my $httpurl=&hreflocation('',$url);
3278: $httpref{'httpref.'.$httpurl}=$srcurl;
3279: &Apache::lonnet::appenv(\%httpref);
3280: }
3281:
3282: #
3283: # Determine if the current user should be able to edit a particular resource,
3284: # when viewing in course context.
3285: # (a) When viewing resource used to determine if "Edit" item is included in
3286: # Functions.
3287: # (b) When displaying folder contents in course editor, used to determine if
3288: # "Edit" link will be displayed alongside resource.
3289: #
3290: # input: six args -- filename (decluttered), course number, course domain,
3291: # url, symb (if registered) and group (if this is a group
3292: # item -- e.g., bulletin board, group page etc.).
3293: # output: array of five scalars --
3294: # $cfile -- url for file editing if editable on current server
3295: # $home -- homeserver of resource (i.e., for author if published,
3296: # or course if uploaded.).
3297: # $switchserver -- 1 if server switch will be needed.
3298: # $forceedit -- 1 if icon/link should be to go to edit mode
3299: # $forceview -- 1 if icon/link should be to go to view mode
3300: #
3301:
3302: sub can_edit_resource {
3303: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3304: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3305: #
3306: # For aboutme pages user can only edit his/her own.
3307: #
3308: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3309: my ($sdom,$sname) = ($1,$2);
3310: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3311: $home = $env{'user.home'};
3312: $cfile = $resurl;
3313: if ($env{'form.forceedit'}) {
3314: $forceview = 1;
3315: } else {
3316: $forceedit = 1;
3317: }
3318: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3319: } else {
3320: return;
3321: }
3322: }
3323:
3324: if ($env{'request.course.id'}) {
3325: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3326: if ($group ne '') {
3327: # if this is a group homepage or group bulletin board, check group privs
3328: my $allowed = 0;
3329: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3330: if ((&allowed('mdg',$env{'request.course.id'}.
3331: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3332: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3333: $allowed = 1;
3334: }
3335: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3336: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3337: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3338: $allowed = 1;
3339: }
3340: }
3341: if ($allowed) {
3342: $home=&homeserver($cnum,$cdom);
3343: if ($env{'form.forceedit'}) {
3344: $forceview = 1;
3345: } else {
3346: $forceedit = 1;
3347: }
3348: $cfile = $resurl;
3349: } else {
3350: return;
3351: }
3352: } else {
3353: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3354: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3355: return;
3356: }
3357: } elsif (!$crsedit) {
3358: #
3359: # No edit allowed where CC has switched to student role.
3360: #
3361: return;
3362: }
3363: }
3364: }
3365:
3366: if ($file ne '') {
3367: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3368: if (&is_course_upload($file,$cnum,$cdom)) {
3369: $uploaded = 1;
3370: $incourse = 1;
3371: if ($file =~/\.(htm|html|css|js|txt)$/) {
3372: $cfile = &hreflocation('',$file);
3373: if ($env{'form.forceedit'}) {
3374: $forceview = 1;
3375: } else {
3376: $forceedit = 1;
3377: }
3378: }
3379: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3380: $incourse = 1;
3381: if ($env{'form.forceedit'}) {
3382: $forceview = 1;
3383: } else {
3384: $forceedit = 1;
3385: }
3386: $cfile = $resurl;
3387: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3388: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3389: $incourse = 1;
3390: if ($env{'form.forceedit'}) {
3391: $forceview = 1;
3392: } else {
3393: $forceedit = 1;
3394: }
3395: $cfile = $resurl;
3396: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3397: $incourse = 1;
3398: $cfile = $resurl.'/smpedit';
3399: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3400: $incourse = 1;
3401: if ($env{'form.forceedit'}) {
3402: $forceview = 1;
3403: } else {
3404: $forceedit = 1;
3405: }
3406: $cfile = $resurl;
3407: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3408: $incourse = 1;
3409: if ($env{'form.forceedit'}) {
3410: $forceview = 1;
3411: } else {
3412: $forceedit = 1;
3413: }
3414: $cfile = $resurl;
3415: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3416: $incourse = 1;
3417: if ($env{'form.forceedit'}) {
3418: $forceview = 1;
3419: } else {
3420: $forceedit = 1;
3421: }
3422: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3423: }
3424: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3425: my $template = '/res/lib/templates/simpleproblem.problem';
3426: if (&is_on_map($template)) {
3427: $incourse = 1;
3428: $forceview = 1;
3429: $cfile = $template;
3430: }
3431: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3432: $incourse = 1;
3433: if ($env{'form.forceedit'}) {
3434: $forceview = 1;
3435: } else {
3436: $forceedit = 1;
3437: }
3438: $cfile = $resurl;
3439: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3440: $incourse = 1;
3441: if ($env{'form.forceedit'}) {
3442: $forceview = 1;
3443: } else {
3444: $forceedit = 1;
3445: }
3446: $cfile = $resurl;
3447: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3448: $incourse = 1;
3449: $forceview = 1;
3450: if ($symb) {
3451: my ($map,$id,$res)=&decode_symb($symb);
3452: $env{'request.symb'} = $symb;
3453: $cfile = &clutter($res);
3454: } else {
3455: $cfile = $env{'form.suppurl'};
3456: my $escfile = &unescape($cfile);
3457: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3458: $cfile = '/adm/wrapper'.$escfile;
3459: } else {
3460: $escfile =~ s{^http://}{};
3461: $cfile = &escape("/adm/wrapper/ext/$escfile");
3462: }
3463: }
3464: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3465: if ($env{'form.forceedit'}) {
3466: $forceview = 1;
3467: } else {
3468: $forceedit = 1;
3469: }
3470: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3471: }
3472: }
3473: if ($uploaded || $incourse) {
3474: $home=&homeserver($cnum,$cdom);
3475: } elsif ($file !~ m{/$}) {
3476: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3477: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3478: # Check that the user has permission to edit this resource
3479: my $setpriv = 1;
3480: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3481: if (defined($cfudom)) {
3482: $home=&homeserver($cfuname,$cfudom);
3483: $cfile=$file;
3484: }
3485: }
3486: if (($cfile ne '') && (!$incourse || $uploaded) &&
3487: (($home ne '') && ($home ne 'no_host'))) {
3488: my @ids=¤t_machine_ids();
3489: unless (grep(/^\Q$home\E$/,@ids)) {
3490: $switchserver=1;
3491: }
3492: }
3493: }
3494: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3495: }
3496:
3497: sub is_course_upload {
3498: my ($file,$cnum,$cdom) = @_;
3499: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3500: $uploadpath =~ s{^\/}{};
3501: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3502: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3503: return 1;
3504: }
3505: return;
3506: }
3507:
3508: sub in_course {
3509: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3510: if ($hideprivileged) {
3511: my $skipuser;
3512: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3513: my @possdoms = ($cdom);
3514: if ($coursehash{'checkforpriv'}) {
3515: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3516: }
3517: if (&privileged($uname,$udom,\@possdoms)) {
3518: $skipuser = 1;
3519: if ($coursehash{'nothideprivileged'}) {
3520: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3521: my $user;
3522: if ($item =~ /:/) {
3523: $user = $item;
3524: } else {
3525: $user = join(':',split(/[\@]/,$item));
3526: }
3527: if ($user eq $uname.':'.$udom) {
3528: undef($skipuser);
3529: last;
3530: }
3531: }
3532: }
3533: if ($skipuser) {
3534: return 0;
3535: }
3536: }
3537: }
3538: $type ||= 'any';
3539: if (!defined($cdom) || !defined($cnum)) {
3540: my $cid = $env{'request.course.id'};
3541: $cdom = $env{'course.'.$cid.'.domain'};
3542: $cnum = $env{'course.'.$cid.'.num'};
3543: }
3544: my $typesref;
3545: if (($type eq 'any') || ($type eq 'all')) {
3546: $typesref = ['active','previous','future'];
3547: } elsif ($type eq 'previous' || $type eq 'future') {
3548: $typesref = [$type];
3549: }
3550: my %roles = &get_my_roles($uname,$udom,'userroles',
3551: $typesref,undef,[$cdom]);
3552: my ($tmp) = keys(%roles);
3553: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3554: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3555: if (@course_roles > 0) {
3556: return 1;
3557: }
3558: return 0;
3559: }
3560:
3561: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3562: # input: action, courseID, current domain, intended
3563: # path to file, source of file, instruction to parse file for objects,
3564: # ref to hash for embedded objects,
3565: # ref to hash for codebase of java objects.
3566: # reference to scalar to accommodate mime type determined
3567: # from File::MMagic if $parser = parse.
3568: #
3569: # output: url to file (if action was uploaddoc),
3570: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3571: #
3572: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3573: # course.
3574: #
3575: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3576: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3577: # course's home server.
3578: #
3579: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3580: # be copied from $source (current location) to
3581: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3582: # and will then be copied to
3583: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3584: # course's home server.
3585: #
3586: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3587: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3588: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3589: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3590: # in course's home server.
3591: #
3592:
3593: sub process_coursefile {
3594: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3595: $mimetype)=@_;
3596: my $fetchresult;
3597: my $home=&homeserver($docuname,$docudom);
3598: if ($action eq 'propagate') {
3599: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3600: $home);
3601: } else {
3602: my $fpath = '';
3603: my $fname = $file;
3604: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3605: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3606: my $filepath = &build_filepath($fpath);
3607: if ($action eq 'copy') {
3608: if ($source eq '') {
3609: $fetchresult = 'no source file';
3610: return $fetchresult;
3611: } else {
3612: my $destination = $filepath.'/'.$fname;
3613: rename($source,$destination);
3614: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3615: $home);
3616: }
3617: } elsif ($action eq 'uploaddoc') {
3618: open(my $fh,'>'.$filepath.'/'.$fname);
3619: print $fh $env{'form.'.$source};
3620: close($fh);
3621: if ($parser eq 'parse') {
3622: my $mm = new File::MMagic;
3623: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3624: if ($type eq 'text/html') {
3625: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3626: unless ($parse_result eq 'ok') {
3627: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3628: }
3629: }
3630: if (ref($mimetype)) {
3631: $$mimetype = $type;
3632: }
3633: }
3634: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3635: $home);
3636: if ($fetchresult eq 'ok') {
3637: return '/uploaded/'.$fpath.'/'.$fname;
3638: } else {
3639: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3640: ' to host '.$home.': '.$fetchresult);
3641: return '/adm/notfound.html';
3642: }
3643: }
3644: }
3645: unless ( $fetchresult eq 'ok') {
3646: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3647: ' to host '.$home.': '.$fetchresult);
3648: }
3649: return $fetchresult;
3650: }
3651:
3652: sub build_filepath {
3653: my ($fpath) = @_;
3654: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3655: unless ($fpath eq '') {
3656: my @parts=split('/',$fpath);
3657: foreach my $part (@parts) {
3658: $filepath.= '/'.$part;
3659: if ((-e $filepath)!=1) {
3660: mkdir($filepath,0777);
3661: }
3662: }
3663: }
3664: return $filepath;
3665: }
3666:
3667: sub store_edited_file {
3668: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3669: my $file = $primary_url;
3670: $file =~ s#^/uploaded/$docudom/$docuname/##;
3671: my $fpath = '';
3672: my $fname = $file;
3673: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3674: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3675: my $filepath = &build_filepath($fpath);
3676: open(my $fh,'>'.$filepath.'/'.$fname);
3677: print $fh $content;
3678: close($fh);
3679: my $home=&homeserver($docuname,$docudom);
3680: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3681: $home);
3682: if ($$fetchresult eq 'ok') {
3683: return '/uploaded/'.$fpath.'/'.$fname;
3684: } else {
3685: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3686: ' to host '.$home.': '.$$fetchresult);
3687: return '/adm/notfound.html';
3688: }
3689: }
3690:
3691: sub clean_filename {
3692: my ($fname,$args)=@_;
3693: # Replace Windows backslashes by forward slashes
3694: $fname=~s/\\/\//g;
3695: if (!$args->{'keep_path'}) {
3696: # Get rid of everything but the actual filename
3697: $fname=~s/^.*\/([^\/]+)$/$1/;
3698: }
3699: # Replace spaces by underscores
3700: $fname=~s/\s+/\_/g;
3701: # Replace all other weird characters by nothing
3702: $fname=~s{[^/\w\.\-]}{}g;
3703: # Replace all .\d. sequences with _\d. so they no longer look like version
3704: # numbers
3705: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3706: return $fname;
3707: }
3708: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3709: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3710: # image with the same aspect ratio as the original, but with dimensions which do
3711: # not exceed $resizewidth and $resizeheight.
3712:
3713: sub resizeImage {
3714: my ($img_path,$resizewidth,$resizeheight) = @_;
3715: my $ima = Image::Magick->new;
3716: my $resized;
3717: if (-e $img_path) {
3718: $ima->Read($img_path);
3719: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3720: my $width = $ima->Get('width');
3721: my $height = $ima->Get('height');
3722: if ($width > $resizewidth) {
3723: my $factor = $width/$resizewidth;
3724: my $newheight = $height/$factor;
3725: $ima->Scale(width=>$resizewidth,height=>$newheight);
3726: $resized = 1;
3727: }
3728: }
3729: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3730: my $width = $ima->Get('width');
3731: my $height = $ima->Get('height');
3732: if ($height > $resizeheight) {
3733: my $factor = $height/$resizeheight;
3734: my $newwidth = $width/$factor;
3735: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3736: $resized = 1;
3737: }
3738: }
3739: if ($resized) {
3740: $ima->Write($img_path);
3741: }
3742: }
3743: return;
3744: }
3745:
3746: # --------------- Take an uploaded file and put it into the userfiles directory
3747: # input: $formname - the contents of the file are in $env{"form.$formname"}
3748: # the desired filename is in $env{"form.$formname.filename"}
3749: # $context - possible values: coursedoc, existingfile, overwrite,
3750: # canceloverwrite, or ''.
3751: # if 'coursedoc': upload to the current course
3752: # if 'existingfile': write file to tmp/overwrites directory
3753: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3754: # $context is passed as argument to &finishuserfileupload
3755: # $subdir - directory in userfile to store the file into
3756: # $parser - instruction to parse file for objects ($parser = parse)
3757: # $allfiles - reference to hash for embedded objects
3758: # $codebase - reference to hash for codebase of java objects
3759: # $desuname - username for permanent storage of uploaded file
3760: # $dsetudom - domain for permanaent storage of uploaded file
3761: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3762: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3763: # $resizewidth - width (pixels) to which to resize uploaded image
3764: # $resizeheight - height (pixels) to which to resize uploaded image
3765: # $mimetype - reference to scalar to accommodate mime type determined
3766: # from File::MMagic.
3767: #
3768: # output: url of file in userspace, or error: <message>
3769: # or /adm/notfound.html if failure to upload occurse
3770:
3771: sub userfileupload {
3772: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3773: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3774: if (!defined($subdir)) { $subdir='unknown'; }
3775: my $fname=$env{'form.'.$formname.'.filename'};
3776: $fname=&clean_filename($fname);
3777: # See if there is anything left
3778: unless ($fname) { return 'error: no uploaded file'; }
3779: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3780: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3781: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3782: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3783: my $now = time;
3784: my $filepath;
3785: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3786: $filepath = 'tmp/helprequests/'.$now;
3787: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3788: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3789: '_'.$env{'user.domain'}.'/pending';
3790: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3791: my ($docuname,$docudom);
3792: if ($destudom =~ /^$match_domain$/) {
3793: $docudom = $destudom;
3794: } else {
3795: $docudom = $env{'user.domain'};
3796: }
3797: if ($destuname =~ /^$match_username$/) {
3798: $docuname = $destuname;
3799: } else {
3800: $docuname = $env{'user.name'};
3801: }
3802: if (exists($env{'form.group'})) {
3803: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3804: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3805: }
3806: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3807: if ($context eq 'canceloverwrite') {
3808: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3809: if (-e $tempfile) {
3810: my @info = stat($tempfile);
3811: if ($info[9] eq $env{'form.timestamp'}) {
3812: unlink($tempfile);
3813: }
3814: }
3815: return;
3816: }
3817: }
3818: # Create the directory if not present
3819: my @parts=split(/\//,$filepath);
3820: my $fullpath = $perlvar{'lonDaemons'};
3821: for (my $i=0;$i<@parts;$i++) {
3822: $fullpath .= '/'.$parts[$i];
3823: if ((-e $fullpath)!=1) {
3824: mkdir($fullpath,0777);
3825: }
3826: }
3827: open(my $fh,'>'.$fullpath.'/'.$fname);
3828: print $fh $env{'form.'.$formname};
3829: close($fh);
3830: if ($context eq 'existingfile') {
3831: my @info = stat($fullpath.'/'.$fname);
3832: return ($fullpath.'/'.$fname,$info[9]);
3833: } else {
3834: return $fullpath.'/'.$fname;
3835: }
3836: }
3837: if ($subdir eq 'scantron') {
3838: $fname = 'scantron_orig_'.$fname;
3839: } else {
3840: $fname="$subdir/$fname";
3841: }
3842: if ($context eq 'coursedoc') {
3843: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3844: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3845: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3846: return &finishuserfileupload($docuname,$docudom,
3847: $formname,$fname,$parser,$allfiles,
3848: $codebase,$thumbwidth,$thumbheight,
3849: $resizewidth,$resizeheight,$context,$mimetype);
3850: } else {
3851: if ($env{'form.folder'}) {
3852: $fname=$env{'form.folder'}.'/'.$fname;
3853: }
3854: return &process_coursefile('uploaddoc',$docuname,$docudom,
3855: $fname,$formname,$parser,
3856: $allfiles,$codebase,$mimetype);
3857: }
3858: } elsif (defined($destuname)) {
3859: my $docuname=$destuname;
3860: my $docudom=$destudom;
3861: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3862: $parser,$allfiles,$codebase,
3863: $thumbwidth,$thumbheight,
3864: $resizewidth,$resizeheight,$context,$mimetype);
3865: } else {
3866: my $docuname=$env{'user.name'};
3867: my $docudom=$env{'user.domain'};
3868: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3869: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3870: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3871: }
3872: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3873: $parser,$allfiles,$codebase,
3874: $thumbwidth,$thumbheight,
3875: $resizewidth,$resizeheight,$context,$mimetype);
3876: }
3877: }
3878:
3879: sub finishuserfileupload {
3880: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3881: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3882: my $path=$docudom.'/'.$docuname.'/';
3883: my $filepath=$perlvar{'lonDocRoot'};
3884:
3885: my ($fnamepath,$file,$fetchthumb);
3886: $file=$fname;
3887: if ($fname=~m|/|) {
3888: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3889: $path.=$fnamepath.'/';
3890: }
3891: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3892: my $count;
3893: for ($count=4;$count<=$#parts;$count++) {
3894: $filepath.="/$parts[$count]";
3895: if ((-e $filepath)!=1) {
3896: mkdir($filepath,0777);
3897: }
3898: }
3899:
3900: # Save the file
3901: {
3902: if (!open(FH,'>'.$filepath.'/'.$file)) {
3903: &logthis('Failed to create '.$filepath.'/'.$file);
3904: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3905: return '/adm/notfound.html';
3906: }
3907: if ($context eq 'overwrite') {
3908: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3909: my $target = $filepath.'/'.$file;
3910: if (-e $source) {
3911: my @info = stat($source);
3912: if ($info[9] eq $env{'form.timestamp'}) {
3913: unless (&File::Copy::move($source,$target)) {
3914: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3915: return "Moving from $source failed";
3916: }
3917: } else {
3918: return "Temporary file: $source had unexpected date/time for last modification";
3919: }
3920: } else {
3921: return "Temporary file: $source missing";
3922: }
3923: } elsif (!print FH ($env{'form.'.$formname})) {
3924: &logthis('Failed to write to '.$filepath.'/'.$file);
3925: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3926: return '/adm/notfound.html';
3927: }
3928: close(FH);
3929: if ($resizewidth && $resizeheight) {
3930: my $mm = new File::MMagic;
3931: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3932: if ($mime_type =~ m{^image/}) {
3933: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3934: }
3935: }
3936: }
3937: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3938: if (ref($mimetype)) {
3939: if ($$mimetype eq '') {
3940: my $mm = new File::MMagic;
3941: my $type = $mm->checktype_filename($filepath.'/'.$file);
3942: $$mimetype = $type;
3943: }
3944: }
3945: }
3946: if ($parser eq 'parse') {
3947: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3948: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3949: $allfiles,$codebase);
3950: unless ($parse_result eq 'ok') {
3951: &logthis('Failed to parse '.$filepath.$file.
3952: ' for embedded media: '.$parse_result);
3953: }
3954: }
3955: }
3956: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3957: my $input = $filepath.'/'.$file;
3958: my $output = $filepath.'/'.'tn-'.$file;
3959: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3960: system("convert -sample $thumbsize $input $output");
3961: if (-e $filepath.'/'.'tn-'.$file) {
3962: $fetchthumb = 1;
3963: }
3964: }
3965:
3966: # Notify homeserver to grep it
3967: #
3968: my $docuhome=&homeserver($docuname,$docudom);
3969: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3970: if ($fetchresult eq 'ok') {
3971: if ($fetchthumb) {
3972: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3973: if ($thumbresult ne 'ok') {
3974: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3975: $docuhome.': '.$thumbresult);
3976: }
3977: }
3978: #
3979: # Return the URL to it
3980: return '/uploaded/'.$path.$file;
3981: } else {
3982: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3983: ': '.$fetchresult);
3984: return '/adm/notfound.html';
3985: }
3986: }
3987:
3988: sub extract_embedded_items {
3989: my ($fullpath,$allfiles,$codebase,$content) = @_;
3990: my @state = ();
3991: my (%lastids,%related,%shockwave,%flashvars);
3992: my %javafiles = (
3993: codebase => '',
3994: code => '',
3995: archive => ''
3996: );
3997: my %mediafiles = (
3998: src => '',
3999: movie => '',
4000: );
4001: my $p;
4002: if ($content) {
4003: $p = HTML::LCParser->new($content);
4004: } else {
4005: $p = HTML::LCParser->new($fullpath);
4006: }
4007: while (my $t=$p->get_token()) {
4008: if ($t->[0] eq 'S') {
4009: my ($tagname, $attr) = ($t->[1],$t->[2]);
4010: push(@state, $tagname);
4011: if (lc($tagname) eq 'allow') {
4012: &add_filetype($allfiles,$attr->{'src'},'src');
4013: }
4014: if (lc($tagname) eq 'img') {
4015: &add_filetype($allfiles,$attr->{'src'},'src');
4016: }
4017: if (lc($tagname) eq 'a') {
4018: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4019: &add_filetype($allfiles,$attr->{'href'},'href');
4020: }
4021: }
4022: if (lc($tagname) eq 'script') {
4023: my $src;
4024: if ($attr->{'archive'} =~ /\.jar$/i) {
4025: &add_filetype($allfiles,$attr->{'archive'},'archive');
4026: } else {
4027: if ($attr->{'src'} ne '') {
4028: $src = $attr->{'src'};
4029: &add_filetype($allfiles,$src,'src');
4030: }
4031: }
4032: my $text = $p->get_trimmed_text();
4033: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4034: my @swfargs = split(/,/,$1);
4035: foreach my $item (@swfargs) {
4036: $item =~ s/["']//g;
4037: $item =~ s/^\s+//;
4038: $item =~ s/\s+$//;
4039: }
4040: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4041: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4042: push(@{$related{$swfargs[0]}},$swfargs[2]);
4043: } else {
4044: $related{$swfargs[0]} = [$swfargs[2]];
4045: }
4046: }
4047: }
4048: }
4049: if (lc($tagname) eq 'link') {
4050: if (lc($attr->{'rel'}) eq 'stylesheet') {
4051: &add_filetype($allfiles,$attr->{'href'},'href');
4052: }
4053: }
4054: if (lc($tagname) eq 'object' ||
4055: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4056: foreach my $item (keys(%javafiles)) {
4057: $javafiles{$item} = '';
4058: }
4059: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4060: $lastids{lc($tagname)} = $attr->{'id'};
4061: }
4062: }
4063: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4064: my $name = lc($attr->{'name'});
4065: foreach my $item (keys(%javafiles)) {
4066: if ($name eq $item) {
4067: $javafiles{$item} = $attr->{'value'};
4068: last;
4069: }
4070: }
4071: my $pathfrom;
4072: foreach my $item (keys(%mediafiles)) {
4073: if ($name eq $item) {
4074: $pathfrom = $attr->{'value'};
4075: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4076: &add_filetype($allfiles,$pathfrom,$name);
4077: last;
4078: }
4079: }
4080: if ($name eq 'flashvars') {
4081: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4082: }
4083: if ($pathfrom ne '') {
4084: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4085: $pathfrom);
4086: }
4087: }
4088: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4089: foreach my $item (keys(%javafiles)) {
4090: if ($attr->{$item}) {
4091: $javafiles{$item} = $attr->{$item};
4092: last;
4093: }
4094: }
4095: foreach my $item (keys(%mediafiles)) {
4096: if ($attr->{$item}) {
4097: &add_filetype($allfiles,$attr->{$item},$item);
4098: last;
4099: }
4100: }
4101: if (lc($tagname) eq 'embed') {
4102: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4103: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4104: $attr->{'src'});
4105: }
4106: }
4107: }
4108: if (lc($tagname) eq 'iframe') {
4109: my $src = $attr->{'src'} ;
4110: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4111: &add_filetype($allfiles,$src,'src');
4112: } elsif ($src =~ m{^/}) {
4113: if ($env{'request.course.id'}) {
4114: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4115: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4116: my $url = &hreflocation('',$fullpath);
4117: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4118: my $relpath = $1;
4119: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4120: &add_filetype($allfiles,$1,'src');
4121: }
4122: }
4123: }
4124: }
4125: }
4126: if ($t->[4] =~ m{/>$}) {
4127: pop(@state);
4128: }
4129: } elsif ($t->[0] eq 'E') {
4130: my ($tagname) = ($t->[1]);
4131: if ($javafiles{'codebase'} ne '') {
4132: $javafiles{'codebase'} .= '/';
4133: }
4134: if (lc($tagname) eq 'applet' ||
4135: lc($tagname) eq 'object' ||
4136: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4137: ) {
4138: foreach my $item (keys(%javafiles)) {
4139: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4140: my $file=$javafiles{'codebase'}.$javafiles{$item};
4141: &add_filetype($allfiles,$file,$item);
4142: }
4143: }
4144: }
4145: pop @state;
4146: }
4147: }
4148: foreach my $id (sort(keys(%flashvars))) {
4149: if ($shockwave{$id} ne '') {
4150: my @pairs = split(/\&/,$flashvars{$id});
4151: foreach my $pair (@pairs) {
4152: my ($key,$value) = split(/\=/,$pair);
4153: if ($key eq 'thumb') {
4154: &add_filetype($allfiles,$value,$key);
4155: } elsif ($key eq 'content') {
4156: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4157: my ($ext) = ($value =~ /\.([^.]+)$/);
4158: if ($ext ne '') {
4159: &add_filetype($allfiles,$path.$value,$ext);
4160: }
4161: }
4162: }
4163: }
4164: }
4165: return 'ok';
4166: }
4167:
4168: sub add_filetype {
4169: my ($allfiles,$file,$type)=@_;
4170: if (exists($allfiles->{$file})) {
4171: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4172: push(@{$allfiles->{$file}}, &escape($type));
4173: }
4174: } else {
4175: @{$allfiles->{$file}} = (&escape($type));
4176: }
4177: }
4178:
4179: sub embedded_dependency {
4180: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4181: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4182: if (($identifier ne '') &&
4183: (ref($related->{$identifier}) eq 'ARRAY') &&
4184: ($pathfrom ne '')) {
4185: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4186: foreach my $dep (@{$related->{$identifier}}) {
4187: &add_filetype($allfiles,$path.$dep,'object');
4188: }
4189: }
4190: }
4191: return;
4192: }
4193:
4194: sub removeuploadedurl {
4195: my ($url)=@_;
4196: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4197: return &removeuserfile($uname,$udom,$fname);
4198: }
4199:
4200: sub removeuserfile {
4201: my ($docuname,$docudom,$fname)=@_;
4202: my $home=&homeserver($docuname,$docudom);
4203: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4204: if ($result eq 'ok') {
4205: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4206: my $metafile = $fname.'.meta';
4207: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4208: my $url = "/uploaded/$docudom/$docuname/$fname";
4209: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4210: my $sqlresult =
4211: &update_portfolio_table($docuname,$docudom,$file,
4212: 'portfolio_metadata',$group,
4213: 'delete');
4214: }
4215: }
4216: return $result;
4217: }
4218:
4219: sub mkdiruserfile {
4220: my ($docuname,$docudom,$dir)=@_;
4221: my $home=&homeserver($docuname,$docudom);
4222: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4223: }
4224:
4225: sub renameuserfile {
4226: my ($docuname,$docudom,$old,$new)=@_;
4227: my $home=&homeserver($docuname,$docudom);
4228: my $result = &reply("renameuserfile:$docudom:$docuname:".
4229: &escape("$old").':'.&escape("$new"),$home);
4230: if ($result eq 'ok') {
4231: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4232: my $oldmeta = $old.'.meta';
4233: my $newmeta = $new.'.meta';
4234: my $metaresult =
4235: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4236: my $url = "/uploaded/$docudom/$docuname/$old";
4237: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4238: my $sqlresult =
4239: &update_portfolio_table($docuname,$docudom,$file,
4240: 'portfolio_metadata',$group,
4241: 'delete');
4242: }
4243: }
4244: return $result;
4245: }
4246:
4247: # ------------------------------------------------------------------------- Log
4248:
4249: sub log {
4250: my ($dom,$nam,$hom,$what)=@_;
4251: return critical("log:$dom:$nam:$what",$hom);
4252: }
4253:
4254: # ------------------------------------------------------------------ Course Log
4255: #
4256: # This routine flushes several buffers of non-mission-critical nature
4257: #
4258:
4259: sub flushcourselogs {
4260: &logthis('Flushing log buffers');
4261: #
4262: # course logs
4263: # This is a log of all transactions in a course, which can be used
4264: # for data mining purposes
4265: #
4266: # It also collects the courseid database, which lists last transaction
4267: # times and course titles for all courseids
4268: #
4269: my %courseidbuffer=();
4270: foreach my $crsid (keys(%courselogs)) {
4271: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4272: &escape($courselogs{$crsid}),
4273: $coursehombuf{$crsid}) eq 'ok') {
4274: delete $courselogs{$crsid};
4275: } else {
4276: &logthis('Failed to flush log buffer for '.$crsid);
4277: if (length($courselogs{$crsid})>40000) {
4278: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4279: " exceeded maximum size, deleting.</font>");
4280: delete $courselogs{$crsid};
4281: }
4282: }
4283: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4284: 'description' => $coursedescrbuf{$crsid},
4285: 'inst_code' => $courseinstcodebuf{$crsid},
4286: 'type' => $coursetypebuf{$crsid},
4287: 'owner' => $courseownerbuf{$crsid},
4288: };
4289: }
4290: #
4291: # Write course id database (reverse lookup) to homeserver of courses
4292: # Is used in pickcourse
4293: #
4294: foreach my $crs_home (keys(%courseidbuffer)) {
4295: my $response = &courseidput(&host_domain($crs_home),
4296: $courseidbuffer{$crs_home},
4297: $crs_home,'timeonly');
4298: }
4299: #
4300: # File accesses
4301: # Writes to the dynamic metadata of resources to get hit counts, etc.
4302: #
4303: foreach my $entry (keys(%accesshash)) {
4304: if ($entry =~ /___count$/) {
4305: my ($dom,$name);
4306: ($dom,$name,undef)=
4307: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4308: if (! defined($dom) || $dom eq '' ||
4309: ! defined($name) || $name eq '') {
4310: my $cid = $env{'request.course.id'};
4311: $dom = $env{'request.'.$cid.'.domain'};
4312: $name = $env{'request.'.$cid.'.num'};
4313: }
4314: my $value = $accesshash{$entry};
4315: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4316: my %temphash=($url => $value);
4317: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4318: if ($result eq 'ok') {
4319: delete $accesshash{$entry};
4320: }
4321: } else {
4322: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4323: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4324: my %temphash=($entry => $accesshash{$entry});
4325: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4326: delete $accesshash{$entry};
4327: }
4328: }
4329: }
4330: #
4331: # Roles
4332: # Reverse lookup of user roles for course faculty/staff and co-authorship
4333: #
4334: foreach my $entry (keys(%userrolehash)) {
4335: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4336: split(/\:/,$entry);
4337: if (&Apache::lonnet::put('nohist_userroles',
4338: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4339: $rudom,$runame) eq 'ok') {
4340: delete $userrolehash{$entry};
4341: }
4342: }
4343: #
4344: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4345: #
4346: my %domrolebuffer = ();
4347: foreach my $entry (keys(%domainrolehash)) {
4348: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4349: if ($domrolebuffer{$rudom}) {
4350: $domrolebuffer{$rudom}.='&'.&escape($entry).
4351: '='.&escape($domainrolehash{$entry});
4352: } else {
4353: $domrolebuffer{$rudom}.=&escape($entry).
4354: '='.&escape($domainrolehash{$entry});
4355: }
4356: delete $domainrolehash{$entry};
4357: }
4358: foreach my $dom (keys(%domrolebuffer)) {
4359: my %servers;
4360: if (defined(&domain($dom,'primary'))) {
4361: my $primary=&domain($dom,'primary');
4362: my $hostname=&hostname($primary);
4363: $servers{$primary} = $hostname;
4364: } else {
4365: %servers = &get_servers($dom,'library');
4366: }
4367: foreach my $tryserver (keys(%servers)) {
4368: if (&reply('domroleput:'.$dom.':'.
4369: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4370: last;
4371: } else {
4372: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4373: }
4374: }
4375: }
4376: $dumpcount++;
4377: }
4378:
4379: sub courselog {
4380: my $what=shift;
4381: $what=time.':'.$what;
4382: unless ($env{'request.course.id'}) { return ''; }
4383: $coursedombuf{$env{'request.course.id'}}=
4384: $env{'course.'.$env{'request.course.id'}.'.domain'};
4385: $coursenumbuf{$env{'request.course.id'}}=
4386: $env{'course.'.$env{'request.course.id'}.'.num'};
4387: $coursehombuf{$env{'request.course.id'}}=
4388: $env{'course.'.$env{'request.course.id'}.'.home'};
4389: $coursedescrbuf{$env{'request.course.id'}}=
4390: $env{'course.'.$env{'request.course.id'}.'.description'};
4391: $courseinstcodebuf{$env{'request.course.id'}}=
4392: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4393: $courseownerbuf{$env{'request.course.id'}}=
4394: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4395: $coursetypebuf{$env{'request.course.id'}}=
4396: $env{'course.'.$env{'request.course.id'}.'.type'};
4397: if (defined $courselogs{$env{'request.course.id'}}) {
4398: $courselogs{$env{'request.course.id'}}.='&'.$what;
4399: } else {
4400: $courselogs{$env{'request.course.id'}}.=$what;
4401: }
4402: if (length($courselogs{$env{'request.course.id'}})>4048) {
4403: &flushcourselogs();
4404: }
4405: }
4406:
4407: sub courseacclog {
4408: my $fnsymb=shift;
4409: unless ($env{'request.course.id'}) { return ''; }
4410: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4411: if ($fnsymb=~/$LONCAPA::assess_re/) {
4412: $what.=':POST';
4413: # FIXME: Probably ought to escape things....
4414: foreach my $key (keys(%env)) {
4415: if ($key=~/^form\.(.*)/) {
4416: my $formitem = $1;
4417: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4418: $what.=':'.$formitem.'='.$env{$key};
4419: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4420: $what.=':'.$formitem.'='.$env{$key};
4421: }
4422: }
4423: }
4424: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4425: # FIXME: We should not be depending on a form parameter that someone
4426: # editing lonsearchcat.pm might change in the future.
4427: if ($env{'form.phase'} eq 'course_search') {
4428: $what.= ':POST';
4429: # FIXME: Probably ought to escape things....
4430: foreach my $element ('courseexp','crsfulltext','crsrelated',
4431: 'crsdiscuss') {
4432: $what.=':'.$element.'='.$env{'form.'.$element};
4433: }
4434: }
4435: }
4436: &courselog($what);
4437: }
4438:
4439: sub countacc {
4440: my $url=&declutter(shift);
4441: return if (! defined($url) || $url eq '');
4442: unless ($env{'request.course.id'}) { return ''; }
4443: #
4444: # Mark that this url was used in this course
4445: #
4446: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4447: #
4448: # Increase the access count for this resource in this child process
4449: #
4450: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4451: $accesshash{$key}++;
4452: }
4453:
4454: sub linklog {
4455: my ($from,$to)=@_;
4456: $from=&declutter($from);
4457: $to=&declutter($to);
4458: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4459: $accesshash{$to.'___'.$from.'___goto'}=1;
4460: }
4461:
4462: sub statslog {
4463: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4464: if ($users<2) { return; }
4465: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4466: 'course' => $env{'request.course.id'},
4467: 'sections' => '"all"',
4468: 'num_students' => $users,
4469: 'part' => $part,
4470: 'symb' => $symb,
4471: 'mean_tries' => $av_attempts,
4472: 'deg_of_diff' => $degdiff});
4473: foreach my $key (keys(%dynstore)) {
4474: $accesshash{$key}=$dynstore{$key};
4475: }
4476: }
4477:
4478: sub userrolelog {
4479: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4480: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4481: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4482: $userrolehash
4483: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4484: =$tend.':'.$tstart;
4485: }
4486: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4487: $userrolehash
4488: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4489: =$tend.':'.$tstart;
4490: }
4491: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4492: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4493: $domainrolehash
4494: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4495: = $tend.':'.$tstart;
4496: }
4497: }
4498:
4499: sub courserolelog {
4500: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4501: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4502: my $cdom = $1;
4503: my $cnum = $2;
4504: my $sec = $3;
4505: my $namespace = 'rolelog';
4506: my %storehash = (
4507: role => $trole,
4508: start => $tstart,
4509: end => $tend,
4510: selfenroll => $selfenroll,
4511: context => $context,
4512: );
4513: if ($trole eq 'gr') {
4514: $namespace = 'groupslog';
4515: $storehash{'group'} = $sec;
4516: } else {
4517: $storehash{'section'} = $sec;
4518: }
4519: &write_log('course',$namespace,\%storehash,$delflag,$username,
4520: $domain,$cnum,$cdom);
4521: if (($trole ne 'st') || ($sec ne '')) {
4522: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4523: }
4524: }
4525: return;
4526: }
4527:
4528: sub domainrolelog {
4529: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4530: if ($area =~ m{^/($match_domain)/$}) {
4531: my $cdom = $1;
4532: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4533: my $namespace = 'rolelog';
4534: my %storehash = (
4535: role => $trole,
4536: start => $tstart,
4537: end => $tend,
4538: context => $context,
4539: );
4540: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4541: $domain,$domconfiguser,$cdom);
4542: }
4543: return;
4544:
4545: }
4546:
4547: sub coauthorrolelog {
4548: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4549: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4550: my $audom = $1;
4551: my $auname = $2;
4552: my $namespace = 'rolelog';
4553: my %storehash = (
4554: role => $trole,
4555: start => $tstart,
4556: end => $tend,
4557: context => $context,
4558: );
4559: &write_log('author',$namespace,\%storehash,$delflag,$username,
4560: $domain,$auname,$audom);
4561: }
4562: return;
4563: }
4564:
4565: sub get_course_adv_roles {
4566: my ($cid,$codes) = @_;
4567: $cid=$env{'request.course.id'} unless (defined($cid));
4568: my %coursehash=&coursedescription($cid);
4569: my $crstype = &Apache::loncommon::course_type($cid);
4570: my %nothide=();
4571: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4572: if ($user !~ /:/) {
4573: $nothide{join(':',split(/[\@]/,$user))}=1;
4574: } else {
4575: $nothide{$user}=1;
4576: }
4577: }
4578: my @possdoms = ($coursehash{'domain'});
4579: if ($coursehash{'checkforpriv'}) {
4580: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4581: }
4582: my %returnhash=();
4583: my %dumphash=
4584: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4585: my $now=time;
4586: my %privileged;
4587: foreach my $entry (keys(%dumphash)) {
4588: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4589: if (($tstart) && ($tstart<0)) { next; }
4590: if (($tend) && ($tend<$now)) { next; }
4591: if (($tstart) && ($now<$tstart)) { next; }
4592: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4593: if ($username eq '' || $domain eq '') { next; }
4594: if ((&privileged($username,$domain,\@possdoms)) &&
4595: (!$nothide{$username.':'.$domain})) { next; }
4596: if ($role eq 'cr') { next; }
4597: if ($codes) {
4598: if ($section) { $role .= ':'.$section; }
4599: if ($returnhash{$role}) {
4600: $returnhash{$role}.=','.$username.':'.$domain;
4601: } else {
4602: $returnhash{$role}=$username.':'.$domain;
4603: }
4604: } else {
4605: my $key=&plaintext($role,$crstype);
4606: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4607: if ($returnhash{$key}) {
4608: $returnhash{$key}.=','.$username.':'.$domain;
4609: } else {
4610: $returnhash{$key}=$username.':'.$domain;
4611: }
4612: }
4613: }
4614: return %returnhash;
4615: }
4616:
4617: sub get_my_roles {
4618: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4619: unless (defined($uname)) { $uname=$env{'user.name'}; }
4620: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4621: my (%dumphash,%nothide);
4622: if ($context eq 'userroles') {
4623: %dumphash = &dump('roles',$udom,$uname);
4624: } else {
4625: %dumphash = &dump('nohist_userroles',$udom,$uname);
4626: if ($hidepriv) {
4627: my %coursehash=&coursedescription($udom.'_'.$uname);
4628: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4629: if ($user !~ /:/) {
4630: $nothide{join(':',split(/[\@]/,$user))} = 1;
4631: } else {
4632: $nothide{$user} = 1;
4633: }
4634: }
4635: }
4636: }
4637: my %returnhash=();
4638: my $now=time;
4639: my %privileged;
4640: foreach my $entry (keys(%dumphash)) {
4641: my ($role,$tend,$tstart);
4642: if ($context eq 'userroles') {
4643: next if ($entry =~ /^rolesdef/);
4644: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4645: } else {
4646: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4647: }
4648: if (($tstart) && ($tstart<0)) { next; }
4649: my $status = 'active';
4650: if (($tend) && ($tend<=$now)) {
4651: $status = 'previous';
4652: }
4653: if (($tstart) && ($now<$tstart)) {
4654: $status = 'future';
4655: }
4656: if (ref($types) eq 'ARRAY') {
4657: if (!grep(/^\Q$status\E$/,@{$types})) {
4658: next;
4659: }
4660: } else {
4661: if ($status ne 'active') {
4662: next;
4663: }
4664: }
4665: my ($rolecode,$username,$domain,$section,$area);
4666: if ($context eq 'userroles') {
4667: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4668: (undef,$domain,$username,$section) = split(/\//,$area);
4669: } else {
4670: ($role,$username,$domain,$section) = split(/\:/,$entry);
4671: }
4672: if (ref($roledoms) eq 'ARRAY') {
4673: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4674: next;
4675: }
4676: }
4677: if (ref($roles) eq 'ARRAY') {
4678: if (!grep(/^\Q$role\E$/,@{$roles})) {
4679: if ($role =~ /^cr\//) {
4680: if (!grep(/^cr$/,@{$roles})) {
4681: next;
4682: }
4683: } elsif ($role =~ /^gr\//) {
4684: if (!grep(/^gr$/,@{$roles})) {
4685: next;
4686: }
4687: } else {
4688: next;
4689: }
4690: }
4691: }
4692: if ($hidepriv) {
4693: my @privroles = ('dc','su');
4694: if ($context eq 'userroles') {
4695: next if (grep(/^\Q$role\E$/,@privroles));
4696: } else {
4697: my $possdoms = [$domain];
4698: if (ref($roledoms) eq 'ARRAY') {
4699: push(@{$possdoms},@{$roledoms});
4700: }
4701: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4702: if (!$nothide{$username.':'.$domain}) {
4703: next;
4704: }
4705: }
4706: }
4707: }
4708: if ($withsec) {
4709: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4710: $tstart.':'.$tend;
4711: } else {
4712: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4713: }
4714: }
4715: return %returnhash;
4716: }
4717:
4718: sub get_all_adhocroles {
4719: my ($dom) = @_;
4720: my @roles_by_num = ();
4721: my %domdefaults = &get_domain_defaults($dom);
4722: my (%description,%access_in_dom,%access_info);
4723: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4724: my $count = 0;
4725: my %domcurrent = %{$domdefaults{'adhocroles'}};
4726: my %ordered;
4727: foreach my $role (sort(keys(%domcurrent))) {
4728: my ($order,$desc,$access_in_dom);
4729: if (ref($domcurrent{$role}) eq 'HASH') {
4730: $order = $domcurrent{$role}{'order'};
4731: $desc = $domcurrent{$role}{'desc'};
4732: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4733: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4734: }
4735: if ($order eq '') {
4736: $order = $count;
4737: }
4738: $ordered{$order} = $role;
4739: if ($desc ne '') {
4740: $description{$role} = $desc;
4741: } else {
4742: $description{$role}= $role;
4743: }
4744: $count++;
4745: }
4746: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4747: push(@roles_by_num,$ordered{$item});
4748: }
4749: }
4750: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4751: }
4752:
4753: sub get_my_adhocroles {
4754: my ($cid,$checkreg) = @_;
4755: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4756: if ($env{'request.course.id'} eq $cid) {
4757: $cdom = $env{'course.'.$cid.'.domain'};
4758: $cnum = $env{'course.'.$cid.'.num'};
4759: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4760: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4761: $cdom = $1;
4762: $cnum = $2;
4763: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4764: $cdom,$cnum);
4765: }
4766: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4767: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4768: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4769: if ($rosterhash{$user} ne '') {
4770: my $type = (split(/:/,$rosterhash{$user}))[5];
4771: return ([],{}) if ($type eq 'auto');
4772: }
4773: }
4774: if (($cdom ne '') && ($cnum ne '')) {
4775: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4776: my $then=$env{'user.login.time'};
4777: my $update=$env{'user.update.time'};
4778: if (!$update) {
4779: $update = $then;
4780: }
4781: my @liveroles;
4782: foreach my $role ('dh','da') {
4783: if ($env{"user.role.$role./$cdom/"}) {
4784: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4785: my $limit = $update;
4786: if ($env{'request.role'} eq "$role./$cdom/") {
4787: $limit = $then;
4788: }
4789: my $activerole = 1;
4790: if ($tstart && $tstart>$limit) { $activerole = 0; }
4791: if ($tend && $tend <$limit) { $activerole = 0; }
4792: if ($activerole) {
4793: push(@liveroles,$role);
4794: }
4795: }
4796: }
4797: if (@liveroles) {
4798: if (&homeserver($cnum,$cdom) ne 'no_host') {
4799: my ($accessref,$accessinfo,%access_in_dom);
4800: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4801: if (ref($roles_by_num) eq 'ARRAY') {
4802: if (@{$roles_by_num}) {
4803: my %settings;
4804: if ($env{'request.course.id'} eq $cid) {
4805: foreach my $envkey (keys(%env)) {
4806: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4807: $settings{$1} = $env{$envkey};
4808: }
4809: }
4810: } else {
4811: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4812: }
4813: my %setincrs;
4814: if ($settings{'internal.adhocaccess'}) {
4815: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4816: }
4817: my @statuses;
4818: if ($env{'environment.inststatus'}) {
4819: @statuses = split(/,/,$env{'environment.inststatus'});
4820: }
4821: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4822: if (ref($accessref) eq 'HASH') {
4823: %access_in_dom = %{$accessref};
4824: }
4825: foreach my $role (@{$roles_by_num}) {
4826: my ($curraccess,@okstatus,@personnel);
4827: if ($setincrs{$role}) {
4828: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4829: if ($curraccess eq 'status') {
4830: @okstatus = split(/\&/,$rest);
4831: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4832: @personnel = split(/\&/,$rest);
4833: }
4834: } else {
4835: $curraccess = $access_in_dom{$role};
4836: if (ref($accessinfo) eq 'HASH') {
4837: if ($curraccess eq 'status') {
4838: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4839: @okstatus = @{$accessinfo->{$role}};
4840: }
4841: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4842: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4843: @personnel = @{$accessinfo->{$role}};
4844: }
4845: }
4846: }
4847: }
4848: if ($curraccess eq 'none') {
4849: next;
4850: } elsif ($curraccess eq 'all') {
4851: push(@possroles,$role);
4852: } elsif ($curraccess eq 'dh') {
4853: if (grep(/^dh$/,@liveroles)) {
4854: push(@possroles,$role);
4855: } else {
4856: next;
4857: }
4858: } elsif ($curraccess eq 'da') {
4859: if (grep(/^da$/,@liveroles)) {
4860: push(@possroles,$role);
4861: } else {
4862: next;
4863: }
4864: } elsif ($curraccess eq 'status') {
4865: if (@okstatus) {
4866: if (!@statuses) {
4867: if (grep(/^default$/,@okstatus)) {
4868: push(@possroles,$role);
4869: }
4870: } else {
4871: foreach my $status (@okstatus) {
4872: if (grep(/^\Q$status\E$/,@statuses)) {
4873: push(@possroles,$role);
4874: last;
4875: }
4876: }
4877: }
4878: }
4879: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4880: if (grep(/^\Q$user\E$/,@personnel)) {
4881: if ($curraccess eq 'exc') {
4882: push(@possroles,$role);
4883: }
4884: } elsif ($curraccess eq 'inc') {
4885: push(@possroles,$role);
4886: }
4887: }
4888: }
4889: }
4890: }
4891: }
4892: }
4893: }
4894: }
4895: unless (ref($description) eq 'HASH') {
4896: if (ref($roles_by_num) eq 'ARRAY') {
4897: my %desc;
4898: map { $desc{$_} = $_; } (@{$roles_by_num});
4899: $description = \%desc;
4900: } else {
4901: $description = {};
4902: }
4903: }
4904: return (\@possroles,$description);
4905: }
4906:
4907: # ----------------------------------------------------- Frontpage Announcements
4908: #
4909: #
4910:
4911: sub postannounce {
4912: my ($server,$text)=@_;
4913: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4914: unless ($text=~/\w/) { $text=''; }
4915: return &reply('setannounce:'.&escape($text),$server);
4916: }
4917:
4918: sub getannounce {
4919:
4920: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4921: my $announcement='';
4922: while (my $line = <$fh>) { $announcement .= $line; }
4923: close($fh);
4924: if ($announcement=~/\w/) {
4925: return
4926: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4927: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4928: } else {
4929: return '';
4930: }
4931: } else {
4932: return '';
4933: }
4934: }
4935:
4936: # ---------------------------------------------------------- Course ID routines
4937: # Deal with domain's nohist_courseid.db files
4938: #
4939:
4940: sub courseidput {
4941: my ($domain,$storehash,$coursehome,$caller) = @_;
4942: return unless (ref($storehash) eq 'HASH');
4943: my $outcome;
4944: if ($caller eq 'timeonly') {
4945: my $cids = '';
4946: foreach my $item (keys(%$storehash)) {
4947: $cids.=&escape($item).'&';
4948: }
4949: $cids=~s/\&$//;
4950: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4951: $coursehome);
4952: } else {
4953: my $items = '';
4954: foreach my $item (keys(%$storehash)) {
4955: $items.= &escape($item).'='.
4956: &freeze_escape($$storehash{$item}).'&';
4957: }
4958: $items=~s/\&$//;
4959: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4960: $coursehome);
4961: }
4962: if ($outcome eq 'unknown_cmd') {
4963: my $what;
4964: foreach my $cid (keys(%$storehash)) {
4965: $what .= &escape($cid).'=';
4966: foreach my $item ('description','inst_code','owner','type') {
4967: $what .= &escape($storehash->{$cid}{$item}).':';
4968: }
4969: $what =~ s/\:$/&/;
4970: }
4971: $what =~ s/\&$//;
4972: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4973: } else {
4974: return $outcome;
4975: }
4976: }
4977:
4978: sub courseiddump {
4979: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4980: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4981: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4982: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4983: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4984: my $as_hash = 1;
4985: my %returnhash;
4986: if (!$domfilter) { $domfilter=''; }
4987: my %libserv = &all_library();
4988: foreach my $tryserver (keys(%libserv)) {
4989: if ( ( $hostidflag == 1
4990: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4991: || (!defined($hostidflag)) ) {
4992:
4993: if (($domfilter eq '') ||
4994: (&host_domain($tryserver) eq $domfilter)) {
4995: my $rep;
4996: if (grep { $_ eq $tryserver } current_machine_ids()) {
4997: $rep = LONCAPA::Lond::dump_course_id_handler(
4998: join(":", (&host_domain($tryserver), $sincefilter,
4999: &escape($descfilter), &escape($instcodefilter),
5000: &escape($ownerfilter), &escape($coursefilter),
5001: &escape($typefilter), &escape($regexp_ok),
5002: $as_hash, &escape($selfenrollonly),
5003: &escape($catfilter), $showhidden, $caller,
5004: &escape($cloner), &escape($cc_clone), $cloneonly,
5005: &escape($createdbefore), &escape($createdafter),
5006: &escape($creationcontext),$domcloner,$hasuniquecode,
5007: $reqcrsdom,&escape($reqinstcode))));
5008: } else {
5009: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5010: $sincefilter.':'.&escape($descfilter).':'.
5011: &escape($instcodefilter).':'.&escape($ownerfilter).
5012: ':'.&escape($coursefilter).':'.&escape($typefilter).
5013: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5014: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5015: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5016: &escape($cc_clone).':'.$cloneonly.':'.
5017: &escape($createdbefore).':'.&escape($createdafter).':'.
5018: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5019: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5020: }
5021:
5022: my @pairs=split(/\&/,$rep);
5023: foreach my $item (@pairs) {
5024: my ($key,$value)=split(/\=/,$item,2);
5025: $key = &unescape($key);
5026: next if ($key =~ /^error: 2 /);
5027: my $result = &thaw_unescape($value);
5028: if (ref($result) eq 'HASH') {
5029: $returnhash{$key}=$result;
5030: } else {
5031: my @responses = split(/:/,$value);
5032: my @items = ('description','inst_code','owner','type');
5033: for (my $i=0; $i<@responses; $i++) {
5034: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5035: }
5036: }
5037: }
5038: }
5039: }
5040: }
5041: return %returnhash;
5042: }
5043:
5044: sub courselastaccess {
5045: my ($cdom,$cnum,$hostidref) = @_;
5046: my %returnhash;
5047: if ($cdom && $cnum) {
5048: my $chome = &homeserver($cnum,$cdom);
5049: if ($chome ne 'no_host') {
5050: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5051: &extract_lastaccess(\%returnhash,$rep);
5052: }
5053: } else {
5054: if (!$cdom) { $cdom=''; }
5055: my %libserv = &all_library();
5056: foreach my $tryserver (keys(%libserv)) {
5057: if (ref($hostidref) eq 'ARRAY') {
5058: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5059: }
5060: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5061: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5062: &extract_lastaccess(\%returnhash,$rep);
5063: }
5064: }
5065: }
5066: return %returnhash;
5067: }
5068:
5069: sub extract_lastaccess {
5070: my ($returnhash,$rep) = @_;
5071: if (ref($returnhash) eq 'HASH') {
5072: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5073: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5074: $rep eq '') {
5075: my @pairs=split(/\&/,$rep);
5076: foreach my $item (@pairs) {
5077: my ($key,$value)=split(/\=/,$item,2);
5078: $key = &unescape($key);
5079: next if ($key =~ /^error: 2 /);
5080: $returnhash->{$key} = &thaw_unescape($value);
5081: }
5082: }
5083: }
5084: return;
5085: }
5086:
5087: # ---------------------------------------------------------- DC e-mail
5088:
5089: sub dcmailput {
5090: my ($domain,$msgid,$message,$server)=@_;
5091: my $status = &Apache::lonnet::critical(
5092: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5093: &escape($message),$server);
5094: return $status;
5095: }
5096:
5097: sub dcmaildump {
5098: my ($dom,$startdate,$enddate,$senders) = @_;
5099: my %returnhash=();
5100:
5101: if (defined(&domain($dom,'primary'))) {
5102: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5103: &escape($enddate).':';
5104: my @esc_senders=map { &escape($_)} @$senders;
5105: $cmd.=&escape(join('&',@esc_senders));
5106: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5107: my ($key,$value) = split(/\=/,$line,2);
5108: if (($key) && ($value)) {
5109: $returnhash{&unescape($key)} = &unescape($value);
5110: }
5111: }
5112: }
5113: return %returnhash;
5114: }
5115: # ---------------------------------------------------------- Domain roles
5116:
5117: sub get_domain_roles {
5118: my ($dom,$roles,$startdate,$enddate)=@_;
5119: if ((!defined($startdate)) || ($startdate eq '')) {
5120: $startdate = '.';
5121: }
5122: if ((!defined($enddate)) || ($enddate eq '')) {
5123: $enddate = '.';
5124: }
5125: my $rolelist;
5126: if (ref($roles) eq 'ARRAY') {
5127: $rolelist = join('&',@{$roles});
5128: }
5129: my %personnel = ();
5130:
5131: my %servers = &get_servers($dom,'library');
5132: foreach my $tryserver (keys(%servers)) {
5133: %{$personnel{$tryserver}}=();
5134: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5135: &escape($startdate).':'.
5136: &escape($enddate).':'.
5137: &escape($rolelist), $tryserver))) {
5138: my ($key,$value) = split(/\=/,$line,2);
5139: if (($key) && ($value)) {
5140: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5141: }
5142: }
5143: }
5144: return %personnel;
5145: }
5146:
5147: sub get_active_domroles {
5148: my ($dom,$roles) = @_;
5149: return () unless (ref($roles) eq 'ARRAY');
5150: my $now = time;
5151: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5152: my %domroles;
5153: foreach my $server (keys(%dompersonnel)) {
5154: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5155: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5156: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5157: }
5158: }
5159: return %domroles;
5160: }
5161:
5162: # ----------------------------------------------------------- Interval timing
5163:
5164: {
5165: # Caches needed for speedup of navmaps
5166: # We don't want to cache this for very long at all (5 seconds at most)
5167: #
5168: # The user for whom we cache
5169: my $cachedkey='';
5170: # The cached times for this user
5171: my %cachedtimes=();
5172: # When this was last done
5173: my $cachedtime='';
5174:
5175: sub load_all_first_access {
5176: my ($uname,$udom,$ignorecache)=@_;
5177: if (($cachedkey eq $uname.':'.$udom) &&
5178: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5179: (!$ignorecache)) {
5180: return;
5181: }
5182: $cachedtime=time;
5183: $cachedkey=$uname.':'.$udom;
5184: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5185: }
5186:
5187: sub get_first_access {
5188: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5189: my ($symb,$courseid,$udom,$uname)=&whichuser();
5190: if ($argsymb) { $symb=$argsymb; }
5191: my ($map,$id,$res)=&decode_symb($symb);
5192: if ($argmap) { $map = $argmap; }
5193: if ($type eq 'course') {
5194: $res='course';
5195: } elsif ($type eq 'map') {
5196: $res=&symbread($map);
5197: } else {
5198: $res=$symb;
5199: }
5200: &load_all_first_access($uname,$udom,$ignorecache);
5201: return $cachedtimes{"$courseid\0$res"};
5202: }
5203:
5204: sub set_first_access {
5205: my ($type,$interval)=@_;
5206: my ($symb,$courseid,$udom,$uname)=&whichuser();
5207: my ($map,$id,$res)=&decode_symb($symb);
5208: if ($type eq 'course') {
5209: $res='course';
5210: } elsif ($type eq 'map') {
5211: $res=&symbread($map);
5212: } else {
5213: $res=$symb;
5214: }
5215: $cachedkey='';
5216: my $firstaccess=&get_first_access($type,$symb,$map);
5217: if (!$firstaccess) {
5218: my $start = time;
5219: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5220: $udom,$uname);
5221: if ($putres eq 'ok') {
5222: &put('timerinterval',{"$courseid\0$res"=>$interval},
5223: $udom,$uname);
5224: &appenv(
5225: {
5226: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5227: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5228: }
5229: );
5230: }
5231: return $putres;
5232: }
5233: return 'already_set';
5234: }
5235: }
5236:
5237: # --------------------------------------------- Set Expire Date for Spreadsheet
5238:
5239: sub expirespread {
5240: my ($uname,$udom,$stype,$usymb)=@_;
5241: my $cid=$env{'request.course.id'};
5242: if ($cid) {
5243: my $now=time;
5244: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5245: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5246: $env{'course.'.$cid.'.num'}.
5247: ':nohist_expirationdates:'.
5248: &escape($key).'='.$now,
5249: $env{'course.'.$cid.'.home'})
5250: }
5251: return 'ok';
5252: }
5253:
5254: # ----------------------------------------------------- Devalidate Spreadsheets
5255:
5256: sub devalidate {
5257: my ($symb,$uname,$udom)=@_;
5258: my $cid=$env{'request.course.id'};
5259: if ($cid) {
5260: # delete the stored spreadsheets for
5261: # - the student level sheet of this user in course's homespace
5262: # - the assessment level sheet for this resource
5263: # for this user in user's homespace
5264: # - current conditional state info
5265: my $key=$uname.':'.$udom.':';
5266: my $status=
5267: &del('nohist_calculatedsheets',
5268: [$key.'studentcalc:'],
5269: $env{'course.'.$cid.'.domain'},
5270: $env{'course.'.$cid.'.num'})
5271: .' '.
5272: &del('nohist_calculatedsheets_'.$cid,
5273: [$key.'assesscalc:'.$symb],$udom,$uname);
5274: unless ($status eq 'ok ok') {
5275: &logthis('Could not devalidate spreadsheet '.
5276: $uname.' at '.$udom.' for '.
5277: $symb.': '.$status);
5278: }
5279: &delenv('user.state.'.$cid);
5280: }
5281: }
5282:
5283: sub get_scalar {
5284: my ($string,$end) = @_;
5285: my $value;
5286: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5287: $value = $1;
5288: } elsif ($$string =~ s/^([^&]*?)&//) {
5289: $value = $1;
5290: }
5291: return &unescape($value);
5292: }
5293:
5294: sub array2str {
5295: my (@array) = @_;
5296: my $result=&arrayref2str(\@array);
5297: $result=~s/^__ARRAY_REF__//;
5298: $result=~s/__END_ARRAY_REF__$//;
5299: return $result;
5300: }
5301:
5302: sub arrayref2str {
5303: my ($arrayref) = @_;
5304: my $result='__ARRAY_REF__';
5305: foreach my $elem (@$arrayref) {
5306: if(ref($elem) eq 'ARRAY') {
5307: $result.=&arrayref2str($elem).'&';
5308: } elsif(ref($elem) eq 'HASH') {
5309: $result.=&hashref2str($elem).'&';
5310: } elsif(ref($elem)) {
5311: #print("Got a ref of ".(ref($elem))." skipping.");
5312: } else {
5313: $result.=&escape($elem).'&';
5314: }
5315: }
5316: $result=~s/\&$//;
5317: $result .= '__END_ARRAY_REF__';
5318: return $result;
5319: }
5320:
5321: sub hash2str {
5322: my (%hash) = @_;
5323: my $result=&hashref2str(\%hash);
5324: $result=~s/^__HASH_REF__//;
5325: $result=~s/__END_HASH_REF__$//;
5326: return $result;
5327: }
5328:
5329: sub hashref2str {
5330: my ($hashref)=@_;
5331: my $result='__HASH_REF__';
5332: foreach my $key (sort(keys(%$hashref))) {
5333: if (ref($key) eq 'ARRAY') {
5334: $result.=&arrayref2str($key).'=';
5335: } elsif (ref($key) eq 'HASH') {
5336: $result.=&hashref2str($key).'=';
5337: } elsif (ref($key)) {
5338: $result.='=';
5339: #print("Got a ref of ".(ref($key))." skipping.");
5340: } else {
5341: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5342: }
5343:
5344: if(ref($hashref->{$key}) eq 'ARRAY') {
5345: $result.=&arrayref2str($hashref->{$key}).'&';
5346: } elsif(ref($hashref->{$key}) eq 'HASH') {
5347: $result.=&hashref2str($hashref->{$key}).'&';
5348: } elsif(ref($hashref->{$key})) {
5349: $result.='&';
5350: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5351: } else {
5352: $result.=&escape($hashref->{$key}).'&';
5353: }
5354: }
5355: $result=~s/\&$//;
5356: $result .= '__END_HASH_REF__';
5357: return $result;
5358: }
5359:
5360: sub str2hash {
5361: my ($string)=@_;
5362: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5363: return %$hash;
5364: }
5365:
5366: sub str2hashref {
5367: my ($string) = @_;
5368:
5369: my %hash;
5370:
5371: if($string !~ /^__HASH_REF__/) {
5372: if (! ($string eq '' || !defined($string))) {
5373: $hash{'error'}='Not hash reference';
5374: }
5375: return (\%hash, $string);
5376: }
5377:
5378: $string =~ s/^__HASH_REF__//;
5379:
5380: while($string !~ /^__END_HASH_REF__/) {
5381: #key
5382: my $key='';
5383: if($string =~ /^__HASH_REF__/) {
5384: ($key, $string)=&str2hashref($string);
5385: if(defined($key->{'error'})) {
5386: $hash{'error'}='Bad data';
5387: return (\%hash, $string);
5388: }
5389: } elsif($string =~ /^__ARRAY_REF__/) {
5390: ($key, $string)=&str2arrayref($string);
5391: if($key->[0] eq 'Array reference error') {
5392: $hash{'error'}='Bad data';
5393: return (\%hash, $string);
5394: }
5395: } else {
5396: $string =~ s/^(.*?)=//;
5397: $key=&unescape($1);
5398: }
5399: $string =~ s/^=//;
5400:
5401: #value
5402: my $value='';
5403: if($string =~ /^__HASH_REF__/) {
5404: ($value, $string)=&str2hashref($string);
5405: if(defined($value->{'error'})) {
5406: $hash{'error'}='Bad data';
5407: return (\%hash, $string);
5408: }
5409: } elsif($string =~ /^__ARRAY_REF__/) {
5410: ($value, $string)=&str2arrayref($string);
5411: if($value->[0] eq 'Array reference error') {
5412: $hash{'error'}='Bad data';
5413: return (\%hash, $string);
5414: }
5415: } else {
5416: $value=&get_scalar(\$string,'__END_HASH_REF__');
5417: }
5418: $string =~ s/^&//;
5419:
5420: $hash{$key}=$value;
5421: }
5422:
5423: $string =~ s/^__END_HASH_REF__//;
5424:
5425: return (\%hash, $string);
5426: }
5427:
5428: sub str2array {
5429: my ($string)=@_;
5430: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5431: return @$array;
5432: }
5433:
5434: sub str2arrayref {
5435: my ($string) = @_;
5436: my @array;
5437:
5438: if($string !~ /^__ARRAY_REF__/) {
5439: if (! ($string eq '' || !defined($string))) {
5440: $array[0]='Array reference error';
5441: }
5442: return (\@array, $string);
5443: }
5444:
5445: $string =~ s/^__ARRAY_REF__//;
5446:
5447: while($string !~ /^__END_ARRAY_REF__/) {
5448: my $value='';
5449: if($string =~ /^__HASH_REF__/) {
5450: ($value, $string)=&str2hashref($string);
5451: if(defined($value->{'error'})) {
5452: $array[0] ='Array reference error';
5453: return (\@array, $string);
5454: }
5455: } elsif($string =~ /^__ARRAY_REF__/) {
5456: ($value, $string)=&str2arrayref($string);
5457: if($value->[0] eq 'Array reference error') {
5458: $array[0] ='Array reference error';
5459: return (\@array, $string);
5460: }
5461: } else {
5462: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5463: }
5464: $string =~ s/^&//;
5465:
5466: push(@array, $value);
5467: }
5468:
5469: $string =~ s/^__END_ARRAY_REF__//;
5470:
5471: return (\@array, $string);
5472: }
5473:
5474: # -------------------------------------------------------------------Temp Store
5475:
5476: sub tmpreset {
5477: my ($symb,$namespace,$domain,$stuname) = @_;
5478: if (!$symb) {
5479: $symb=&symbread();
5480: if (!$symb) { $symb= $env{'request.url'}; }
5481: }
5482: $symb=escape($symb);
5483:
5484: if (!$namespace) { $namespace=$env{'request.state'}; }
5485: $namespace=~s/\//\_/g;
5486: $namespace=~s/\W//g;
5487:
5488: if (!$domain) { $domain=$env{'user.domain'}; }
5489: if (!$stuname) { $stuname=$env{'user.name'}; }
5490: if ($domain eq 'public' && $stuname eq 'public') {
5491: $stuname=$ENV{'REMOTE_ADDR'};
5492: }
5493: my $path=LONCAPA::tempdir();
5494: my %hash;
5495: if (tie(%hash,'GDBM_File',
5496: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5497: &GDBM_WRCREAT(),0640)) {
5498: foreach my $key (keys(%hash)) {
5499: if ($key=~ /:$symb/) {
5500: delete($hash{$key});
5501: }
5502: }
5503: }
5504: }
5505:
5506: sub tmpstore {
5507: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5508:
5509: if (!$symb) {
5510: $symb=&symbread();
5511: if (!$symb) { $symb= $env{'request.url'}; }
5512: }
5513: $symb=escape($symb);
5514:
5515: if (!$namespace) {
5516: # I don't think we would ever want to store this for a course.
5517: # it seems this will only be used if we don't have a course.
5518: #$namespace=$env{'request.course.id'};
5519: #if (!$namespace) {
5520: $namespace=$env{'request.state'};
5521: #}
5522: }
5523: $namespace=~s/\//\_/g;
5524: $namespace=~s/\W//g;
5525: if (!$domain) { $domain=$env{'user.domain'}; }
5526: if (!$stuname) { $stuname=$env{'user.name'}; }
5527: if ($domain eq 'public' && $stuname eq 'public') {
5528: $stuname=$ENV{'REMOTE_ADDR'};
5529: }
5530: my $now=time;
5531: my %hash;
5532: my $path=LONCAPA::tempdir();
5533: if (tie(%hash,'GDBM_File',
5534: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5535: &GDBM_WRCREAT(),0640)) {
5536: $hash{"version:$symb"}++;
5537: my $version=$hash{"version:$symb"};
5538: my $allkeys='';
5539: foreach my $key (keys(%$storehash)) {
5540: $allkeys.=$key.':';
5541: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5542: }
5543: $hash{"$version:$symb:timestamp"}=$now;
5544: $allkeys.='timestamp';
5545: $hash{"$version:keys:$symb"}=$allkeys;
5546: if (untie(%hash)) {
5547: return 'ok';
5548: } else {
5549: return "error:$!";
5550: }
5551: } else {
5552: return "error:$!";
5553: }
5554: }
5555:
5556: # -----------------------------------------------------------------Temp Restore
5557:
5558: sub tmprestore {
5559: my ($symb,$namespace,$domain,$stuname) = @_;
5560:
5561: if (!$symb) {
5562: $symb=&symbread();
5563: if (!$symb) { $symb= $env{'request.url'}; }
5564: }
5565: $symb=escape($symb);
5566:
5567: if (!$namespace) { $namespace=$env{'request.state'}; }
5568:
5569: if (!$domain) { $domain=$env{'user.domain'}; }
5570: if (!$stuname) { $stuname=$env{'user.name'}; }
5571: if ($domain eq 'public' && $stuname eq 'public') {
5572: $stuname=$ENV{'REMOTE_ADDR'};
5573: }
5574: my %returnhash;
5575: $namespace=~s/\//\_/g;
5576: $namespace=~s/\W//g;
5577: my %hash;
5578: my $path=LONCAPA::tempdir();
5579: if (tie(%hash,'GDBM_File',
5580: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5581: &GDBM_READER(),0640)) {
5582: my $version=$hash{"version:$symb"};
5583: $returnhash{'version'}=$version;
5584: my $scope;
5585: for ($scope=1;$scope<=$version;$scope++) {
5586: my $vkeys=$hash{"$scope:keys:$symb"};
5587: my @keys=split(/:/,$vkeys);
5588: my $key;
5589: $returnhash{"$scope:keys"}=$vkeys;
5590: foreach $key (@keys) {
5591: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5592: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5593: }
5594: }
5595: if (!(untie(%hash))) {
5596: return "error:$!";
5597: }
5598: } else {
5599: return "error:$!";
5600: }
5601: return %returnhash;
5602: }
5603:
5604: # ----------------------------------------------------------------------- Store
5605:
5606: sub store {
5607: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5608: my $home='';
5609:
5610: if ($stuname) { $home=&homeserver($stuname,$domain); }
5611:
5612: $symb=&symbclean($symb);
5613: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5614:
5615: if (!$domain) { $domain=$env{'user.domain'}; }
5616: if (!$stuname) { $stuname=$env{'user.name'}; }
5617:
5618: &devalidate($symb,$stuname,$domain);
5619:
5620: $symb=escape($symb);
5621: if (!$namespace) {
5622: unless ($namespace=$env{'request.course.id'}) {
5623: return '';
5624: }
5625: }
5626: if (!$home) { $home=$env{'user.home'}; }
5627:
5628: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5629: $$storehash{'host'}=$perlvar{'lonHostID'};
5630:
5631: my $namevalue='';
5632: foreach my $key (keys(%$storehash)) {
5633: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5634: }
5635: $namevalue=~s/\&$//;
5636: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5637: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5638: }
5639:
5640: # -------------------------------------------------------------- Critical Store
5641:
5642: sub cstore {
5643: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5644: my $home='';
5645:
5646: if ($stuname) { $home=&homeserver($stuname,$domain); }
5647:
5648: $symb=&symbclean($symb);
5649: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5650:
5651: if (!$domain) { $domain=$env{'user.domain'}; }
5652: if (!$stuname) { $stuname=$env{'user.name'}; }
5653:
5654: &devalidate($symb,$stuname,$domain);
5655:
5656: $symb=escape($symb);
5657: if (!$namespace) {
5658: unless ($namespace=$env{'request.course.id'}) {
5659: return '';
5660: }
5661: }
5662: if (!$home) { $home=$env{'user.home'}; }
5663:
5664: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5665: $$storehash{'host'}=$perlvar{'lonHostID'};
5666:
5667: my $namevalue='';
5668: foreach my $key (keys(%$storehash)) {
5669: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5670: }
5671: $namevalue=~s/\&$//;
5672: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5673: return critical
5674: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5675: }
5676:
5677: # --------------------------------------------------------------------- Restore
5678:
5679: sub restore {
5680: my ($symb,$namespace,$domain,$stuname) = @_;
5681: my $home='';
5682:
5683: if ($stuname) { $home=&homeserver($stuname,$domain); }
5684:
5685: if (!$symb) {
5686: return if ($namespace eq 'courserequests');
5687: unless ($symb=escape(&symbread())) { return ''; }
5688: } else {
5689: unless ($namespace eq 'courserequests') {
5690: $symb=&escape(&symbclean($symb));
5691: }
5692: }
5693: if (!$namespace) {
5694: unless ($namespace=$env{'request.course.id'}) {
5695: return '';
5696: }
5697: }
5698: if (!$domain) { $domain=$env{'user.domain'}; }
5699: if (!$stuname) { $stuname=$env{'user.name'}; }
5700: if (!$home) { $home=$env{'user.home'}; }
5701: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5702:
5703: my %returnhash=();
5704: foreach my $line (split(/\&/,$answer)) {
5705: my ($name,$value)=split(/\=/,$line);
5706: $returnhash{&unescape($name)}=&thaw_unescape($value);
5707: }
5708: my $version;
5709: for ($version=1;$version<=$returnhash{'version'};$version++) {
5710: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5711: $returnhash{$item}=$returnhash{$version.':'.$item};
5712: }
5713: }
5714: return %returnhash;
5715: }
5716:
5717: # ---------------------------------------------------------- Course Description
5718: #
5719: #
5720:
5721: sub coursedescription {
5722: my ($courseid,$args)=@_;
5723: $courseid=~s/^\///;
5724: $courseid=~s/\_/\//g;
5725: my ($cdomain,$cnum)=split(/\//,$courseid);
5726: my $chome=&homeserver($cnum,$cdomain);
5727: my $normalid=$cdomain.'_'.$cnum;
5728: # need to always cache even if we get errors otherwise we keep
5729: # trying and trying and trying to get the course description.
5730: my %envhash=();
5731: my %returnhash=();
5732:
5733: my $expiretime=600;
5734: if ($env{'request.course.id'} eq $normalid) {
5735: $expiretime=120;
5736: }
5737:
5738: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5739: if (!$args->{'freshen_cache'}
5740: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5741: foreach my $key (keys(%env)) {
5742: next if ($key !~ /^\Q$prefix\E(.*)/);
5743: my ($setting) = $1;
5744: $returnhash{$setting} = $env{$key};
5745: }
5746: return %returnhash;
5747: }
5748:
5749: # get the data again
5750:
5751: if (!$args->{'one_time'}) {
5752: $envhash{'course.'.$normalid.'.last_cache'}=time;
5753: }
5754:
5755: if ($chome ne 'no_host') {
5756: %returnhash=&dump('environment',$cdomain,$cnum);
5757: if (!exists($returnhash{'con_lost'})) {
5758: my $username = $env{'user.name'}; # Defult username
5759: if(defined $args->{'user'}) {
5760: $username = $args->{'user'};
5761: }
5762: $returnhash{'home'}= $chome;
5763: $returnhash{'domain'} = $cdomain;
5764: $returnhash{'num'} = $cnum;
5765: if (!defined($returnhash{'type'})) {
5766: $returnhash{'type'} = 'Course';
5767: }
5768: while (my ($name,$value) = each %returnhash) {
5769: $envhash{'course.'.$normalid.'.'.$name}=$value;
5770: }
5771: $returnhash{'url'}=&clutter($returnhash{'url'});
5772: $returnhash{'fn'}=LONCAPA::tempdir() .
5773: $username.'_'.$cdomain.'_'.$cnum;
5774: $envhash{'course.'.$normalid.'.home'}=$chome;
5775: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5776: $envhash{'course.'.$normalid.'.num'}=$cnum;
5777: }
5778: }
5779: if (!$args->{'one_time'}) {
5780: &appenv(\%envhash);
5781: }
5782: return %returnhash;
5783: }
5784:
5785: sub update_released_required {
5786: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5787: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5788: $cid = $env{'request.course.id'};
5789: $cdom = $env{'course.'.$cid.'.domain'};
5790: $cnum = $env{'course.'.$cid.'.num'};
5791: $chome = $env{'course.'.$cid.'.home'};
5792: }
5793: if ($needsrelease) {
5794: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5795: my $needsupdate;
5796: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5797: $needsupdate = 1;
5798: } else {
5799: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5800: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5801: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5802: $needsupdate = 1;
5803: }
5804: }
5805: if ($needsupdate) {
5806: my %needshash = (
5807: 'internal.releaserequired' => $needsrelease,
5808: );
5809: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5810: if ($putresult eq 'ok') {
5811: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5812: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5813: if (ref($crsinfo{$cid}) eq 'HASH') {
5814: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5815: &courseidput($cdom,\%crsinfo,$chome,'notime');
5816: }
5817: }
5818: }
5819: }
5820: return;
5821: }
5822:
5823: # -------------------------------------------------See if a user is privileged
5824:
5825: sub privileged {
5826: my ($username,$domain,$possdomains,$possroles)=@_;
5827: my $now = time;
5828: my $roles;
5829: if (ref($possroles) eq 'ARRAY') {
5830: $roles = $possroles;
5831: } else {
5832: $roles = ['dc','su'];
5833: }
5834: if (ref($possdomains) eq 'ARRAY') {
5835: my %privileged = &privileged_by_domain($possdomains,$roles);
5836: foreach my $dom (@{$possdomains}) {
5837: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5838: (ref($privileged{$dom}) eq 'HASH')) {
5839: foreach my $role (@{$roles}) {
5840: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5841: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5842: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5843: return 1 unless (($end && $end < $now) ||
5844: ($start && $start > $now));
5845: }
5846: }
5847: }
5848: }
5849: }
5850: } else {
5851: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5852: my $now = time;
5853:
5854: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5855: my ($trole, $tend, $tstart) = split(/_/, $role);
5856: if (grep(/^\Q$trole\E$/,@{$roles})) {
5857: return 1 unless ($tend && $tend < $now)
5858: or ($tstart && $tstart > $now);
5859: }
5860: }
5861: }
5862: return 0;
5863: }
5864:
5865: sub privileged_by_domain {
5866: my ($domains,$roles) = @_;
5867: my %privileged = ();
5868: my $cachetime = 60*60*24;
5869: my $now = time;
5870: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5871: return %privileged;
5872: }
5873: foreach my $dom (@{$domains}) {
5874: next if (ref($privileged{$dom}) eq 'HASH');
5875: my $needroles;
5876: foreach my $role (@{$roles}) {
5877: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5878: if (defined($cached)) {
5879: if (ref($result) eq 'HASH') {
5880: $privileged{$dom}{$role} = $result;
5881: }
5882: } else {
5883: $needroles = 1;
5884: }
5885: }
5886: if ($needroles) {
5887: my %dompersonnel = &get_domain_roles($dom,$roles);
5888: $privileged{$dom} = {};
5889: foreach my $server (keys(%dompersonnel)) {
5890: if (ref($dompersonnel{$server}) eq 'HASH') {
5891: foreach my $item (keys(%{$dompersonnel{$server}})) {
5892: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5893: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5894: next if ($end && $end < $now);
5895: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5896: $dompersonnel{$server}{$item};
5897: }
5898: }
5899: }
5900: if (ref($privileged{$dom}) eq 'HASH') {
5901: foreach my $role (@{$roles}) {
5902: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5903: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5904: } else {
5905: my %hash = ();
5906: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5907: }
5908: }
5909: }
5910: }
5911: }
5912: return %privileged;
5913: }
5914:
5915: # -------------------------------------------------------- Get user privileges
5916:
5917: sub rolesinit {
5918: my ($domain, $username) = @_;
5919: my %userroles = ('user.login.time' => time);
5920: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5921:
5922: # firstaccess and timerinterval are related to timed maps/resources.
5923: # also, blocking can be triggered by an activating timer
5924: # it's saved in the user's %env.
5925: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5926: my %timerinterval = &dump('timerinterval', $domain, $username);
5927: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5928: %timerintchk, %timerintenv);
5929:
5930: foreach my $key (keys(%firstaccess)) {
5931: my ($cid, $rest) = split(/\0/, $key);
5932: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5933: }
5934:
5935: foreach my $key (keys(%timerinterval)) {
5936: my ($cid,$rest) = split(/\0/,$key);
5937: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5938: }
5939:
5940: my %allroles=();
5941: my %allgroups=();
5942:
5943: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5944: my $role = $rolesdump{$area};
5945: $area =~ s/\_\w\w$//;
5946:
5947: my ($trole, $tend, $tstart, $group_privs);
5948:
5949: if ($role =~ /^cr/) {
5950: # Custom role, defined by a user
5951: # e.g., user.role.cr/msu/smith/mynewrole
5952: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5953: $trole = $1;
5954: ($tend, $tstart) = split('_', $2);
5955: } else {
5956: $trole = $role;
5957: }
5958: } elsif ($role =~ m|^gr/|) {
5959: # Role of member in a group, defined within a course/community
5960: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5961: ($trole, $tend, $tstart) = split(/_/, $role);
5962: next if $tstart eq '-1';
5963: ($trole, $group_privs) = split(/\//, $trole);
5964: $group_privs = &unescape($group_privs);
5965: } else {
5966: # Just a normal role, defined in roles.tab
5967: ($trole, $tend, $tstart) = split(/_/,$role);
5968: }
5969:
5970: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5971: $username);
5972: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5973:
5974: # role expired or not available yet?
5975: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5976: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5977:
5978: next if $area eq '' or $trole eq '';
5979:
5980: my $spec = "$trole.$area";
5981: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5982:
5983: if ($trole =~ /^cr\//) {
5984: # Custom role, defined by a user
5985: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5986: } elsif ($trole eq 'gr') {
5987: # Role of a member in a group, defined within a course/community
5988: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5989: next;
5990: } else {
5991: # Normal role, defined in roles.tab
5992: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5993: }
5994:
5995: my $cid = $tdomain.'_'.$trest;
5996: unless ($firstaccchk{$cid}) {
5997: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5998: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5999: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6000: $coursetimerstarts{$cid}{$item};
6001: }
6002: }
6003: $firstaccchk{$cid} = 1;
6004: }
6005: unless ($timerintchk{$cid}) {
6006: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6007: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6008: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6009: $coursetimerintervals{$cid}{$item};
6010: }
6011: }
6012: $timerintchk{$cid} = 1;
6013: }
6014: }
6015:
6016: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6017: \%allroles, \%allgroups);
6018: $env{'user.adv'} = $userroles{'user.adv'};
6019: $env{'user.rar'} = $userroles{'user.rar'};
6020:
6021: return (\%userroles,\%firstaccenv,\%timerintenv);
6022: }
6023:
6024: sub set_arearole {
6025: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6026: unless ($nolog) {
6027: # log the associated role with the area
6028: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6029: }
6030: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6031: }
6032:
6033: sub custom_roleprivs {
6034: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6035: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6036: my $homsvr = &homeserver($rauthor,$rdomain);
6037: if (&hostname($homsvr) ne '') {
6038: my ($rdummy,$roledef)=
6039: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6040: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6041: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6042: if (defined($syspriv)) {
6043: if ($trest =~ /^$match_community$/) {
6044: $syspriv =~ s/bre\&S//;
6045: }
6046: $$allroles{'cm./'}.=':'.$syspriv;
6047: $$allroles{$spec.'./'}.=':'.$syspriv;
6048: }
6049: if ($tdomain ne '') {
6050: if (defined($dompriv)) {
6051: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6052: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6053: }
6054: if (($trest ne '') && (defined($coursepriv))) {
6055: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6056: my $rolename = $1;
6057: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6058: }
6059: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6060: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6061: }
6062: }
6063: }
6064: }
6065: }
6066:
6067: sub course_adhocrole_privs {
6068: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6069: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6070: if ($overrides{"internal.adhocpriv.$rolename"}) {
6071: my (%currprivs,%storeprivs);
6072: foreach my $item (split(/:/,$coursepriv)) {
6073: my ($priv,$restrict) = split(/\&/,$item);
6074: $currprivs{$priv} = $restrict;
6075: }
6076: my (%possadd,%possremove,%full);
6077: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6078: my ($priv,$restrict)=split(/\&/,$item);
6079: $full{$priv} = $restrict;
6080: }
6081: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6082: next if ($item eq '');
6083: my ($rule,$rest) = split(/=/,$item);
6084: next unless (($rule eq 'off') || ($rule eq 'on'));
6085: foreach my $priv (split(/:/,$rest)) {
6086: if ($priv ne '') {
6087: if ($rule eq 'off') {
6088: $possremove{$priv} = 1;
6089: } else {
6090: $possadd{$priv} = 1;
6091: }
6092: }
6093: }
6094: }
6095: foreach my $priv (sort(keys(%full))) {
6096: if (exists($currprivs{$priv})) {
6097: unless (exists($possremove{$priv})) {
6098: $storeprivs{$priv} = $currprivs{$priv};
6099: }
6100: } elsif (exists($possadd{$priv})) {
6101: $storeprivs{$priv} = $full{$priv};
6102: }
6103: }
6104: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6105: }
6106: return $coursepriv;
6107: }
6108:
6109: sub group_roleprivs {
6110: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6111: my $access = 1;
6112: my $now = time;
6113: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6114: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6115: if ($access) {
6116: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6117: $$allgroups{$course}{$group} .=':'.$group_privs;
6118: }
6119: }
6120:
6121: sub standard_roleprivs {
6122: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6123: if (defined($pr{$trole.':s'})) {
6124: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6125: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6126: }
6127: if ($tdomain ne '') {
6128: if (defined($pr{$trole.':d'})) {
6129: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6130: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6131: }
6132: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6133: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6134: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6135: }
6136: }
6137: }
6138:
6139: sub set_userprivs {
6140: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6141: my $author=0;
6142: my $adv=0;
6143: my $rar=0;
6144: my %grouproles = ();
6145: if (keys(%{$allgroups}) > 0) {
6146: my @groupkeys;
6147: foreach my $role (keys(%{$allroles})) {
6148: push(@groupkeys,$role);
6149: }
6150: if (ref($groups_roles) eq 'HASH') {
6151: foreach my $key (keys(%{$groups_roles})) {
6152: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6153: push(@groupkeys,$key);
6154: }
6155: }
6156: }
6157: if (@groupkeys > 0) {
6158: foreach my $role (@groupkeys) {
6159: my ($trole,$area,$sec,$extendedarea);
6160: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6161: $trole = $1;
6162: $area = $2;
6163: $sec = $3;
6164: $extendedarea = $area.$sec;
6165: if (exists($$allgroups{$area})) {
6166: foreach my $group (keys(%{$$allgroups{$area}})) {
6167: my $spec = $trole.'.'.$extendedarea;
6168: $grouproles{$spec.'.'.$area.'/'.$group} =
6169: $$allgroups{$area}{$group};
6170: }
6171: }
6172: }
6173: }
6174: }
6175: }
6176: foreach my $group (keys(%grouproles)) {
6177: $$allroles{$group} = $grouproles{$group};
6178: }
6179: foreach my $role (keys(%{$allroles})) {
6180: my %thesepriv;
6181: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6182: foreach my $item (split(/:/,$$allroles{$role})) {
6183: if ($item ne '') {
6184: my ($privilege,$restrictions)=split(/&/,$item);
6185: if ($restrictions eq '') {
6186: $thesepriv{$privilege}='F';
6187: } elsif ($thesepriv{$privilege} ne 'F') {
6188: $thesepriv{$privilege}.=$restrictions;
6189: }
6190: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6191: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6192: }
6193: }
6194: my $thesestr='';
6195: foreach my $priv (sort(keys(%thesepriv))) {
6196: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6197: }
6198: $userroles->{'user.priv.'.$role} = $thesestr;
6199: }
6200: return ($author,$adv,$rar);
6201: }
6202:
6203: sub role_status {
6204: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6205: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6206: my ($one,$two) = split(m{\./},$rolekey,2);
6207: (undef,undef,$$role) = split(/\./,$one,3);
6208: unless (!defined($$role) || $$role eq '') {
6209: $$where = '/'.$two;
6210: $$trolecode=$$role.'.'.$$where;
6211: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6212: $$tstatus='is';
6213: if ($$tstart && $$tstart>$update) {
6214: $$tstatus='future';
6215: if ($$tstart<$now) {
6216: if ($$tstart && $$tstart>$refresh) {
6217: if (($$where ne '') && ($$role ne '')) {
6218: my (%allroles,%allgroups,$group_privs,
6219: %groups_roles,@rolecodes);
6220: my %userroles = (
6221: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6222: );
6223: @rolecodes = ('cm');
6224: my $spec=$$role.'.'.$$where;
6225: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6226: if ($$role =~ /^cr\//) {
6227: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6228: push(@rolecodes,'cr');
6229: } elsif ($$role eq 'gr') {
6230: push(@rolecodes,$$role);
6231: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6232: $env{'user.name'});
6233: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6234: (undef,my $group_privs) = split(/\//,$trole);
6235: $group_privs = &unescape($group_privs);
6236: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6237: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6238: &get_groups_roles($tdomain,$trest,
6239: \%course_roles,\@rolecodes,
6240: \%groups_roles);
6241: } else {
6242: push(@rolecodes,$$role);
6243: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6244: }
6245: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6246: \%groups_roles);
6247: &appenv(\%userroles,\@rolecodes);
6248: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6249: }
6250: }
6251: $$tstatus = 'is';
6252: }
6253: }
6254: if ($$tend) {
6255: if ($$tend<$update) {
6256: $$tstatus='expired';
6257: } elsif ($$tend<$now) {
6258: $$tstatus='will_not';
6259: }
6260: }
6261: }
6262: }
6263: }
6264:
6265: sub get_groups_roles {
6266: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6267: return unless((ref($cdom_courseroles) eq 'HASH') &&
6268: (ref($rolecodes) eq 'ARRAY') &&
6269: (ref($groups_roles) eq 'HASH'));
6270: if (keys(%{$cdom_courseroles}) > 0) {
6271: my ($cnum) = ($rest =~ /^($match_courseid)/);
6272: if ($cdom ne '' && $cnum ne '') {
6273: foreach my $key (keys(%{$cdom_courseroles})) {
6274: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6275: my $crsrole = $1;
6276: my $crssec = $2;
6277: if ($crsrole =~ /^cr/) {
6278: unless (grep(/^cr$/,@{$rolecodes})) {
6279: push(@{$rolecodes},'cr');
6280: }
6281: } else {
6282: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6283: push(@{$rolecodes},$crsrole);
6284: }
6285: }
6286: my $rolekey = "$crsrole./$cdom/$cnum";
6287: if ($crssec ne '') {
6288: $rolekey .= "/$crssec";
6289: }
6290: $rolekey .= './';
6291: $groups_roles->{$rolekey} = $rolecodes;
6292: }
6293: }
6294: }
6295: }
6296: return;
6297: }
6298:
6299: sub delete_env_groupprivs {
6300: my ($where,$courseroles,$possroles) = @_;
6301: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6302: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6303: unless (ref($courseroles->{$udom}) eq 'HASH') {
6304: %{$courseroles->{$udom}} =
6305: &get_my_roles('','','userroles',['active'],
6306: $possroles,[$udom],1);
6307: }
6308: if (ref($courseroles->{$udom}) eq 'HASH') {
6309: foreach my $item (keys(%{$courseroles->{$udom}})) {
6310: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6311: my $area = '/'.$cdom.'/'.$cnum;
6312: my $privkey = "user.priv.$crsrole.$area";
6313: if ($crssec ne '') {
6314: $privkey .= '/'.$crssec;
6315: }
6316: $privkey .= ".$area/$group";
6317: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6318: }
6319: }
6320: return;
6321: }
6322:
6323: sub check_adhoc_privs {
6324: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6325: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6326: if ($sec) {
6327: $cckey .= '/'.$sec;
6328: }
6329: my $setprivs;
6330: if ($env{$cckey}) {
6331: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6332: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6333: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6334: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6335: $setprivs = 1;
6336: }
6337: } else {
6338: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6339: $setprivs = 1;
6340: }
6341: return $setprivs;
6342: }
6343:
6344: sub set_adhoc_privileges {
6345: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6346: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6347: my $area = '/'.$dcdom.'/'.$pickedcourse;
6348: if ($sec ne '') {
6349: $area .= '/'.$sec;
6350: }
6351: my $spec = $role.'.'.$area;
6352: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6353: $env{'user.name'},1);
6354: my %rolehash = ();
6355: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6356: my $rolename = $1;
6357: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6358: my %domdef = &get_domain_defaults($dcdom);
6359: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6360: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6361: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6362: }
6363: }
6364: } else {
6365: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6366: }
6367: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6368: &appenv(\%userroles,[$role,'cm']);
6369: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6370: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6371: &appenv( {'request.role' => $spec,
6372: 'request.role.domain' => $dcdom,
6373: 'request.course.sec' => $sec,
6374: }
6375: );
6376: my $tadv=0;
6377: if (&allowed('adv') eq 'F') { $tadv=1; }
6378: &appenv({'request.role.adv' => $tadv});
6379: }
6380: }
6381:
6382: # --------------------------------------------------------------- get interface
6383:
6384: sub get {
6385: my ($namespace,$storearr,$udomain,$uname)=@_;
6386: my $items='';
6387: foreach my $item (@$storearr) {
6388: $items.=&escape($item).'&';
6389: }
6390: $items=~s/\&$//;
6391: if (!$udomain) { $udomain=$env{'user.domain'}; }
6392: if (!$uname) { $uname=$env{'user.name'}; }
6393: my $uhome=&homeserver($uname,$udomain);
6394:
6395: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6396: my @pairs=split(/\&/,$rep);
6397: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6398: return @pairs;
6399: }
6400: my %returnhash=();
6401: my $i=0;
6402: foreach my $item (@$storearr) {
6403: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6404: $i++;
6405: }
6406: return %returnhash;
6407: }
6408:
6409: # --------------------------------------------------------------- del interface
6410:
6411: sub del {
6412: my ($namespace,$storearr,$udomain,$uname)=@_;
6413: my $items='';
6414: foreach my $item (@$storearr) {
6415: $items.=&escape($item).'&';
6416: }
6417:
6418: $items=~s/\&$//;
6419: if (!$udomain) { $udomain=$env{'user.domain'}; }
6420: if (!$uname) { $uname=$env{'user.name'}; }
6421: my $uhome=&homeserver($uname,$udomain);
6422: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6423: }
6424:
6425: # -------------------------------------------------------------- dump interface
6426:
6427: sub unserialize {
6428: my ($rep, $escapedkeys) = @_;
6429:
6430: return {} if $rep =~ /^error/;
6431:
6432: my %returnhash=();
6433: foreach my $item (split(/\&/,$rep)) {
6434: my ($key, $value) = split(/=/, $item, 2);
6435: $key = unescape($key) unless $escapedkeys;
6436: next if $key =~ /^error: 2 /;
6437: $returnhash{$key} = &thaw_unescape($value);
6438: }
6439: #return %returnhash;
6440: return \%returnhash;
6441: }
6442:
6443: # see Lond::dump_with_regexp
6444: # if $escapedkeys hash keys won't get unescaped.
6445: sub dump {
6446: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6447: if (!$udomain) { $udomain=$env{'user.domain'}; }
6448: if (!$uname) { $uname=$env{'user.name'}; }
6449: my $uhome=&homeserver($uname,$udomain);
6450:
6451: if ($regexp) {
6452: $regexp=&escape($regexp);
6453: } else {
6454: $regexp='.';
6455: }
6456: if (grep { $_ eq $uhome } current_machine_ids()) {
6457: # user is hosted on this machine
6458: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6459: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6460: return %{unserialize($reply, $escapedkeys)};
6461: }
6462: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6463: my @pairs=split(/\&/,$rep);
6464: my %returnhash=();
6465: if (!($rep =~ /^error/ )) {
6466: foreach my $item (@pairs) {
6467: my ($key,$value)=split(/=/,$item,2);
6468: $key = unescape($key) unless $escapedkeys;
6469: #$key = &unescape($key);
6470: next if ($key =~ /^error: 2 /);
6471: $returnhash{$key}=&thaw_unescape($value);
6472: }
6473: }
6474: return %returnhash;
6475: }
6476:
6477:
6478: # --------------------------------------------------------- dumpstore interface
6479:
6480: sub dumpstore {
6481: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6482: # same as dump but keys must be escaped. They may contain colon separated
6483: # lists of values that may themself contain colons (e.g. symbs).
6484: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6485: }
6486:
6487: # -------------------------------------------------------------- keys interface
6488:
6489: sub getkeys {
6490: my ($namespace,$udomain,$uname)=@_;
6491: if (!$udomain) { $udomain=$env{'user.domain'}; }
6492: if (!$uname) { $uname=$env{'user.name'}; }
6493: my $uhome=&homeserver($uname,$udomain);
6494: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6495: my @keyarray=();
6496: foreach my $key (split(/\&/,$rep)) {
6497: next if ($key =~ /^error: 2 /);
6498: push(@keyarray,&unescape($key));
6499: }
6500: return @keyarray;
6501: }
6502:
6503: # --------------------------------------------------------------- currentdump
6504: sub currentdump {
6505: my ($courseid,$sdom,$sname)=@_;
6506: $courseid = $env{'request.course.id'} if (! defined($courseid));
6507: $sdom = $env{'user.domain'} if (! defined($sdom));
6508: $sname = $env{'user.name'} if (! defined($sname));
6509: my $uhome = &homeserver($sname,$sdom);
6510: my $rep;
6511:
6512: if (grep { $_ eq $uhome } current_machine_ids()) {
6513: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6514: $courseid)));
6515: } else {
6516: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6517: }
6518:
6519: return if ($rep =~ /^(error:|no_such_host)/);
6520: #
6521: my %returnhash=();
6522: #
6523: if ($rep eq 'unknown_cmd') {
6524: # an old lond will not know currentdump
6525: # Do a dump and make it look like a currentdump
6526: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6527: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6528: my %hash = @tmp;
6529: @tmp=();
6530: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6531: } else {
6532: my @pairs=split(/\&/,$rep);
6533: foreach my $pair (@pairs) {
6534: my ($key,$value)=split(/=/,$pair,2);
6535: my ($symb,$param) = split(/:/,$key);
6536: $returnhash{&unescape($symb)}->{&unescape($param)} =
6537: &thaw_unescape($value);
6538: }
6539: }
6540: return %returnhash;
6541: }
6542:
6543: sub convert_dump_to_currentdump{
6544: my %hash = %{shift()};
6545: my %returnhash;
6546: # Code ripped from lond, essentially. The only difference
6547: # here is the unescaping done by lonnet::dump(). Conceivably
6548: # we might run in to problems with parameter names =~ /^v\./
6549: while (my ($key,$value) = each(%hash)) {
6550: my ($v,$symb,$param) = split(/:/,$key);
6551: $symb = &unescape($symb);
6552: $param = &unescape($param);
6553: next if ($v eq 'version' || $symb eq 'keys');
6554: next if (exists($returnhash{$symb}) &&
6555: exists($returnhash{$symb}->{$param}) &&
6556: $returnhash{$symb}->{'v.'.$param} > $v);
6557: $returnhash{$symb}->{$param}=$value;
6558: $returnhash{$symb}->{'v.'.$param}=$v;
6559: }
6560: #
6561: # Remove all of the keys in the hashes which keep track of
6562: # the version of the parameter.
6563: while (my ($symb,$param_hash) = each(%returnhash)) {
6564: # use a foreach because we are going to delete from the hash.
6565: foreach my $key (keys(%$param_hash)) {
6566: delete($param_hash->{$key}) if ($key =~ /^v\./);
6567: }
6568: }
6569: return \%returnhash;
6570: }
6571:
6572: # ------------------------------------------------------ critical inc interface
6573:
6574: sub cinc {
6575: return &inc(@_,'critical');
6576: }
6577:
6578: # --------------------------------------------------------------- inc interface
6579:
6580: sub inc {
6581: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6582: if (!$udomain) { $udomain=$env{'user.domain'}; }
6583: if (!$uname) { $uname=$env{'user.name'}; }
6584: my $uhome=&homeserver($uname,$udomain);
6585: my $items='';
6586: if (! ref($store)) {
6587: # got a single value, so use that instead
6588: $items = &escape($store).'=&';
6589: } elsif (ref($store) eq 'SCALAR') {
6590: $items = &escape($$store).'=&';
6591: } elsif (ref($store) eq 'ARRAY') {
6592: $items = join('=&',map {&escape($_);} @{$store});
6593: } elsif (ref($store) eq 'HASH') {
6594: while (my($key,$value) = each(%{$store})) {
6595: $items.= &escape($key).'='.&escape($value).'&';
6596: }
6597: }
6598: $items=~s/\&$//;
6599: if ($critical) {
6600: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6601: } else {
6602: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6603: }
6604: }
6605:
6606: # --------------------------------------------------------------- put interface
6607:
6608: sub put {
6609: my ($namespace,$storehash,$udomain,$uname)=@_;
6610: if (!$udomain) { $udomain=$env{'user.domain'}; }
6611: if (!$uname) { $uname=$env{'user.name'}; }
6612: my $uhome=&homeserver($uname,$udomain);
6613: my $items='';
6614: foreach my $item (keys(%$storehash)) {
6615: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6616: }
6617: $items=~s/\&$//;
6618: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6619: }
6620:
6621: # ------------------------------------------------------------ newput interface
6622:
6623: sub newput {
6624: my ($namespace,$storehash,$udomain,$uname)=@_;
6625: if (!$udomain) { $udomain=$env{'user.domain'}; }
6626: if (!$uname) { $uname=$env{'user.name'}; }
6627: my $uhome=&homeserver($uname,$udomain);
6628: my $items='';
6629: foreach my $key (keys(%$storehash)) {
6630: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6631: }
6632: $items=~s/\&$//;
6633: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6634: }
6635:
6636: # --------------------------------------------------------- putstore interface
6637:
6638: sub putstore {
6639: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6640: if (!$udomain) { $udomain=$env{'user.domain'}; }
6641: if (!$uname) { $uname=$env{'user.name'}; }
6642: my $uhome=&homeserver($uname,$udomain);
6643: my $items='';
6644: foreach my $key (keys(%$storehash)) {
6645: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6646: }
6647: $items=~s/\&$//;
6648: my $esc_symb=&escape($symb);
6649: my $esc_v=&escape($version);
6650: my $reply =
6651: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6652: $uhome);
6653: if (($tolog) && ($reply eq 'ok')) {
6654: my $namevalue='';
6655: foreach my $key (keys(%{$storehash})) {
6656: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6657: }
6658: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6659: '&host='.&escape($perlvar{'lonHostID'}).
6660: '&version='.$esc_v.
6661: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6662: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6663: }
6664: if ($reply eq 'unknown_cmd') {
6665: # gfall back to way things use to be done
6666: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6667: $uname);
6668: }
6669: return $reply;
6670: }
6671:
6672: sub old_putstore {
6673: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6674: if (!$udomain) { $udomain=$env{'user.domain'}; }
6675: if (!$uname) { $uname=$env{'user.name'}; }
6676: my $uhome=&homeserver($uname,$udomain);
6677: my %newstorehash;
6678: foreach my $item (keys(%$storehash)) {
6679: my $key = $version.':'.&escape($symb).':'.$item;
6680: $newstorehash{$key} = $storehash->{$item};
6681: }
6682: my $items='';
6683: my %allitems = ();
6684: foreach my $item (keys(%newstorehash)) {
6685: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6686: my $key = $1.':keys:'.$2;
6687: $allitems{$key} .= $3.':';
6688: }
6689: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6690: }
6691: foreach my $item (keys(%allitems)) {
6692: $allitems{$item} =~ s/\:$//;
6693: $items.= $item.'='.$allitems{$item}.'&';
6694: }
6695: $items=~s/\&$//;
6696: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6697: }
6698:
6699: # ------------------------------------------------------ critical put interface
6700:
6701: sub cput {
6702: my ($namespace,$storehash,$udomain,$uname)=@_;
6703: if (!$udomain) { $udomain=$env{'user.domain'}; }
6704: if (!$uname) { $uname=$env{'user.name'}; }
6705: my $uhome=&homeserver($uname,$udomain);
6706: my $items='';
6707: foreach my $item (keys(%$storehash)) {
6708: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6709: }
6710: $items=~s/\&$//;
6711: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6712: }
6713:
6714: # -------------------------------------------------------------- eget interface
6715:
6716: sub eget {
6717: my ($namespace,$storearr,$udomain,$uname)=@_;
6718: my $items='';
6719: foreach my $item (@$storearr) {
6720: $items.=&escape($item).'&';
6721: }
6722: $items=~s/\&$//;
6723: if (!$udomain) { $udomain=$env{'user.domain'}; }
6724: if (!$uname) { $uname=$env{'user.name'}; }
6725: my $uhome=&homeserver($uname,$udomain);
6726: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6727: my @pairs=split(/\&/,$rep);
6728: my %returnhash=();
6729: my $i=0;
6730: foreach my $item (@$storearr) {
6731: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6732: $i++;
6733: }
6734: return %returnhash;
6735: }
6736:
6737: # ------------------------------------------------------------ tmpput interface
6738: sub tmpput {
6739: my ($storehash,$server,$context)=@_;
6740: my $items='';
6741: foreach my $item (keys(%$storehash)) {
6742: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6743: }
6744: $items=~s/\&$//;
6745: if (defined($context)) {
6746: $items .= ':'.&escape($context);
6747: }
6748: return &reply("tmpput:$items",$server);
6749: }
6750:
6751: # ------------------------------------------------------------ tmpget interface
6752: sub tmpget {
6753: my ($token,$server)=@_;
6754: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6755: my $rep=&reply("tmpget:$token",$server);
6756: my %returnhash;
6757: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6758: return %returnhash;
6759: }
6760: foreach my $item (split(/\&/,$rep)) {
6761: my ($key,$value)=split(/=/,$item);
6762: $returnhash{&unescape($key)}=&thaw_unescape($value);
6763: }
6764: return %returnhash;
6765: }
6766:
6767: # ------------------------------------------------------------ tmpdel interface
6768: sub tmpdel {
6769: my ($token,$server)=@_;
6770: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6771: return &reply("tmpdel:$token",$server);
6772: }
6773:
6774: # ------------------------------------------------------------ get_timebased_id
6775:
6776: sub get_timebased_id {
6777: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6778: $maxtries) = @_;
6779: my ($newid,$error,$dellock);
6780: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6781: return ('','ok','invalid call to get suffix');
6782: }
6783:
6784: # set defaults for any optional args for which values were not supplied
6785: if ($who eq '') {
6786: $who = $env{'user.name'}.':'.$env{'user.domain'};
6787: }
6788: if (!$locktries) {
6789: $locktries = 3;
6790: }
6791: if (!$maxtries) {
6792: $maxtries = 10;
6793: }
6794:
6795: if (($cdom eq '') || ($cnum eq '')) {
6796: if ($env{'request.course.id'}) {
6797: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6798: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6799: }
6800: if (($cdom eq '') || ($cnum eq '')) {
6801: return ('','ok','call to get suffix not in course context');
6802: }
6803: }
6804:
6805: # construct locking item
6806: my $lockhash = {
6807: $prefix."\0".'locked_'.$keyid => $who,
6808: };
6809: my $tries = 0;
6810:
6811: # attempt to get lock on nohist_$namespace file
6812: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6813: while (($gotlock ne 'ok') && $tries <$locktries) {
6814: $tries ++;
6815: sleep 1;
6816: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6817: }
6818:
6819: # attempt to get unique identifier, based on current timestamp
6820: if ($gotlock eq 'ok') {
6821: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6822: my $id = time;
6823: $newid = $id;
6824: if ($idtype eq 'addcode') {
6825: $newid .= &sixnum_code();
6826: }
6827: my $idtries = 0;
6828: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6829: if ($idtype eq 'concat') {
6830: $newid = $id.$idtries;
6831: } elsif ($idtype eq 'addcode') {
6832: $newid = $newid.&sixnum_code();
6833: } else {
6834: $newid ++;
6835: }
6836: $idtries ++;
6837: }
6838: if (!exists($inuse{$prefix."\0".$newid})) {
6839: my %new_item = (
6840: $prefix."\0".$newid => $who,
6841: );
6842: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6843: $cdom,$cnum);
6844: if ($putresult ne 'ok') {
6845: undef($newid);
6846: $error = 'error saving new item: '.$putresult;
6847: }
6848: } else {
6849: undef($newid);
6850: $error = ('error: no unique suffix available for the new item ');
6851: }
6852: # remove lock
6853: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6854: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6855: } else {
6856: $error = "error: could not obtain lockfile\n";
6857: $dellock = 'ok';
6858: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6859: $dellock = 'nolock';
6860: }
6861: }
6862: return ($newid,$dellock,$error);
6863: }
6864:
6865: sub sixnum_code {
6866: my $code;
6867: for (0..6) {
6868: $code .= int( rand(9) );
6869: }
6870: return $code;
6871: }
6872:
6873: # -------------------------------------------------- portfolio access checking
6874:
6875: sub portfolio_access {
6876: my ($requrl,$clientip) = @_;
6877: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6878: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6879: if ($result) {
6880: my %setters;
6881: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6882: my ($startblock,$endblock) =
6883: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6884: if ($startblock && $endblock) {
6885: return 'B';
6886: }
6887: } else {
6888: my ($startblock,$endblock) =
6889: &Apache::loncommon::blockcheck(\%setters,'port');
6890: if ($startblock && $endblock) {
6891: return 'B';
6892: }
6893: }
6894: }
6895: if ($result eq 'ok') {
6896: return 'F';
6897: } elsif ($result =~ /^[^:]+:guest_/) {
6898: return 'A';
6899: }
6900: return '';
6901: }
6902:
6903: sub get_portfolio_access {
6904: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6905:
6906: if (!ref($access_hash)) {
6907: my $current_perms = &get_portfile_permissions($udom,$unum);
6908: my %access_controls = &get_access_controls($current_perms,$group,
6909: $file_name);
6910: $access_hash = $access_controls{$file_name};
6911: }
6912:
6913: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6914: my $now = time;
6915: if (ref($access_hash) eq 'HASH') {
6916: foreach my $key (keys(%{$access_hash})) {
6917: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6918: if ($start > $now) {
6919: next;
6920: }
6921: if ($end && $end<$now) {
6922: next;
6923: }
6924: if ($scope eq 'public') {
6925: $public = $key;
6926: last;
6927: } elsif ($scope eq 'guest') {
6928: $guest = $key;
6929: } elsif ($scope eq 'domains') {
6930: push(@domains,$key);
6931: } elsif ($scope eq 'users') {
6932: push(@users,$key);
6933: } elsif ($scope eq 'course') {
6934: push(@courses,$key);
6935: } elsif ($scope eq 'group') {
6936: push(@groups,$key);
6937: } elsif ($scope eq 'ip') {
6938: push(@ips,$key);
6939: }
6940: }
6941: if ($public) {
6942: return 'ok';
6943: } elsif (@ips > 0) {
6944: my $allowed;
6945: foreach my $ipkey (@ips) {
6946: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6947: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6948: $allowed = 1;
6949: last;
6950: }
6951: }
6952: }
6953: if ($allowed) {
6954: return 'ok';
6955: }
6956: }
6957: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6958: if ($guest) {
6959: return $guest;
6960: }
6961: } else {
6962: if (@domains > 0) {
6963: foreach my $domkey (@domains) {
6964: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6965: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6966: return 'ok';
6967: }
6968: }
6969: }
6970: }
6971: if (@users > 0) {
6972: foreach my $userkey (@users) {
6973: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6974: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6975: if (ref($item) eq 'HASH') {
6976: if (($item->{'uname'} eq $env{'user.name'}) &&
6977: ($item->{'udom'} eq $env{'user.domain'})) {
6978: return 'ok';
6979: }
6980: }
6981: }
6982: }
6983: }
6984: }
6985: my %roleshash;
6986: my @courses_and_groups = @courses;
6987: push(@courses_and_groups,@groups);
6988: if (@courses_and_groups > 0) {
6989: my (%allgroups,%allroles);
6990: my ($start,$end,$role,$sec,$group);
6991: foreach my $envkey (%env) {
6992: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6993: my $cid = $2.'_'.$3;
6994: if ($1 eq 'gr') {
6995: $group = $4;
6996: $allgroups{$cid}{$group} = $env{$envkey};
6997: } else {
6998: if ($4 eq '') {
6999: $sec = 'none';
7000: } else {
7001: $sec = $4;
7002: }
7003: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7004: }
7005: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7006: my $cid = $2.'_'.$3;
7007: if ($4 eq '') {
7008: $sec = 'none';
7009: } else {
7010: $sec = $4;
7011: }
7012: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7013: }
7014: }
7015: if (keys(%allroles) == 0) {
7016: return;
7017: }
7018: foreach my $key (@courses_and_groups) {
7019: my %content = %{$$access_hash{$key}};
7020: my $cnum = $content{'number'};
7021: my $cdom = $content{'domain'};
7022: my $cid = $cdom.'_'.$cnum;
7023: if (!exists($allroles{$cid})) {
7024: next;
7025: }
7026: foreach my $role_id (keys(%{$content{'roles'}})) {
7027: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7028: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7029: my @status = @{$content{'roles'}{$role_id}{'access'}};
7030: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7031: foreach my $role (keys(%{$allroles{$cid}})) {
7032: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7033: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7034: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7035: if (grep/^all$/,@sections) {
7036: return 'ok';
7037: } else {
7038: if (grep/^$sec$/,@sections) {
7039: return 'ok';
7040: }
7041: }
7042: }
7043: }
7044: if (keys(%{$allgroups{$cid}}) == 0) {
7045: if (grep/^none$/,@groups) {
7046: return 'ok';
7047: }
7048: } else {
7049: if (grep/^all$/,@groups) {
7050: return 'ok';
7051: }
7052: foreach my $group (keys(%{$allgroups{$cid}})) {
7053: if (grep/^$group$/,@groups) {
7054: return 'ok';
7055: }
7056: }
7057: }
7058: }
7059: }
7060: }
7061: }
7062: }
7063: if ($guest) {
7064: return $guest;
7065: }
7066: }
7067: }
7068: return;
7069: }
7070:
7071: sub course_group_datechecker {
7072: my ($dates,$now,$status) = @_;
7073: my ($start,$end) = split(/\./,$dates);
7074: if (!$start && !$end) {
7075: return 'ok';
7076: }
7077: if (grep/^active$/,@{$status}) {
7078: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7079: return 'ok';
7080: }
7081: }
7082: if (grep/^previous$/,@{$status}) {
7083: if ($end > $now ) {
7084: return 'ok';
7085: }
7086: }
7087: if (grep/^future$/,@{$status}) {
7088: if ($start > $now) {
7089: return 'ok';
7090: }
7091: }
7092: return;
7093: }
7094:
7095: sub parse_portfolio_url {
7096: my ($url) = @_;
7097:
7098: my ($type,$udom,$unum,$group,$file_name);
7099:
7100: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7101: $type = 1;
7102: $udom = $1;
7103: $unum = $2;
7104: $file_name = $3;
7105: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7106: $type = 2;
7107: $udom = $1;
7108: $unum = $2;
7109: $group = $3;
7110: $file_name = $3.'/'.$4;
7111: }
7112: if (wantarray) {
7113: return ($type,$udom,$unum,$file_name,$group);
7114: }
7115: return $type;
7116: }
7117:
7118: sub is_portfolio_url {
7119: my ($url) = @_;
7120: return scalar(&parse_portfolio_url($url));
7121: }
7122:
7123: sub is_portfolio_file {
7124: my ($file) = @_;
7125: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7126: return 1;
7127: }
7128: return;
7129: }
7130:
7131: sub usertools_access {
7132: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7133: my ($access,%tools);
7134: if ($context eq '') {
7135: $context = 'tools';
7136: }
7137: if ($context eq 'requestcourses') {
7138: %tools = (
7139: official => 1,
7140: unofficial => 1,
7141: community => 1,
7142: textbook => 1,
7143: placement => 1,
7144: );
7145: } elsif ($context eq 'requestauthor') {
7146: %tools = (
7147: requestauthor => 1,
7148: );
7149: } else {
7150: %tools = (
7151: aboutme => 1,
7152: blog => 1,
7153: webdav => 1,
7154: portfolio => 1,
7155: );
7156: }
7157: return if (!defined($tools{$tool}));
7158:
7159: if (($udom eq '') || ($uname eq '')) {
7160: $udom = $env{'user.domain'};
7161: $uname = $env{'user.name'};
7162: }
7163:
7164: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7165: if ($action ne 'reload') {
7166: if ($context eq 'requestcourses') {
7167: return $env{'environment.canrequest.'.$tool};
7168: } elsif ($context eq 'requestauthor') {
7169: return $env{'environment.canrequest.author'};
7170: } else {
7171: return $env{'environment.availabletools.'.$tool};
7172: }
7173: }
7174: }
7175:
7176: my ($toolstatus,$inststatus,$envkey);
7177: if ($context eq 'requestauthor') {
7178: $envkey = $context;
7179: } else {
7180: $envkey = $context.'.'.$tool;
7181: }
7182:
7183: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7184: ($action ne 'reload')) {
7185: $toolstatus = $env{'environment.'.$envkey};
7186: $inststatus = $env{'environment.inststatus'};
7187: } else {
7188: if (ref($userenvref) eq 'HASH') {
7189: $toolstatus = $userenvref->{$envkey};
7190: $inststatus = $userenvref->{'inststatus'};
7191: } else {
7192: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7193: $toolstatus = $userenv{$envkey};
7194: $inststatus = $userenv{'inststatus'};
7195: }
7196: }
7197:
7198: if ($toolstatus ne '') {
7199: if ($toolstatus) {
7200: $access = 1;
7201: } else {
7202: $access = 0;
7203: }
7204: return $access;
7205: }
7206:
7207: my ($is_adv,%domdef);
7208: if (ref($is_advref) eq 'HASH') {
7209: $is_adv = $is_advref->{'is_adv'};
7210: } else {
7211: $is_adv = &is_advanced_user($udom,$uname);
7212: }
7213: if (ref($domdefref) eq 'HASH') {
7214: %domdef = %{$domdefref};
7215: } else {
7216: %domdef = &get_domain_defaults($udom);
7217: }
7218: if (ref($domdef{$tool}) eq 'HASH') {
7219: if ($is_adv) {
7220: if ($domdef{$tool}{'_LC_adv'} ne '') {
7221: if ($domdef{$tool}{'_LC_adv'}) {
7222: $access = 1;
7223: } else {
7224: $access = 0;
7225: }
7226: return $access;
7227: }
7228: }
7229: if ($inststatus ne '') {
7230: my ($hasaccess,$hasnoaccess);
7231: foreach my $affiliation (split(/:/,$inststatus)) {
7232: if ($domdef{$tool}{$affiliation} ne '') {
7233: if ($domdef{$tool}{$affiliation}) {
7234: $hasaccess = 1;
7235: } else {
7236: $hasnoaccess = 1;
7237: }
7238: }
7239: }
7240: if ($hasaccess || $hasnoaccess) {
7241: if ($hasaccess) {
7242: $access = 1;
7243: } elsif ($hasnoaccess) {
7244: $access = 0;
7245: }
7246: return $access;
7247: }
7248: } else {
7249: if ($domdef{$tool}{'default'} ne '') {
7250: if ($domdef{$tool}{'default'}) {
7251: $access = 1;
7252: } elsif ($domdef{$tool}{'default'} == 0) {
7253: $access = 0;
7254: }
7255: return $access;
7256: }
7257: }
7258: } else {
7259: if (($context eq 'tools') && ($tool ne 'webdav')) {
7260: $access = 1;
7261: } else {
7262: $access = 0;
7263: }
7264: return $access;
7265: }
7266: }
7267:
7268: sub is_course_owner {
7269: my ($cdom,$cnum,$udom,$uname) = @_;
7270: if (($udom eq '') || ($uname eq '')) {
7271: $udom = $env{'user.domain'};
7272: $uname = $env{'user.name'};
7273: }
7274: unless (($udom eq '') || ($uname eq '')) {
7275: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7276: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7277: return 1;
7278: } else {
7279: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7280: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7281: return 1;
7282: }
7283: }
7284: }
7285: }
7286: return;
7287: }
7288:
7289: sub is_advanced_user {
7290: my ($udom,$uname) = @_;
7291: if ($udom ne '' && $uname ne '') {
7292: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7293: if (wantarray) {
7294: return ($env{'user.adv'},$env{'user.author'});
7295: } else {
7296: return $env{'user.adv'};
7297: }
7298: }
7299: }
7300: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7301: my %allroles;
7302: my ($is_adv,$is_author);
7303: foreach my $role (keys(%roleshash)) {
7304: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7305: my $area = '/'.$tdomain.'/'.$trest;
7306: if ($sec ne '') {
7307: $area .= '/'.$sec;
7308: }
7309: if (($area ne '') && ($trole ne '')) {
7310: my $spec=$trole.'.'.$area;
7311: if ($trole =~ /^cr\//) {
7312: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7313: } elsif ($trole ne 'gr') {
7314: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7315: }
7316: if ($trole eq 'au') {
7317: $is_author = 1;
7318: }
7319: }
7320: }
7321: foreach my $role (keys(%allroles)) {
7322: last if ($is_adv);
7323: foreach my $item (split(/:/,$allroles{$role})) {
7324: if ($item ne '') {
7325: my ($privilege,$restrictions)=split(/&/,$item);
7326: if ($privilege eq 'adv') {
7327: $is_adv = 1;
7328: last;
7329: }
7330: }
7331: }
7332: }
7333: if (wantarray) {
7334: return ($is_adv,$is_author);
7335: }
7336: return $is_adv;
7337: }
7338:
7339: sub check_can_request {
7340: my ($dom,$can_request,$request_domains) = @_;
7341: my $canreq = 0;
7342: my ($types,$typename) = &Apache::loncommon::course_types();
7343: my @options = ('approval','validate','autolimit');
7344: my $optregex = join('|',@options);
7345: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7346: foreach my $type (@{$types}) {
7347: if (&usertools_access($env{'user.name'},
7348: $env{'user.domain'},
7349: $type,undef,'requestcourses')) {
7350: $canreq ++;
7351: if (ref($request_domains) eq 'HASH') {
7352: push(@{$request_domains->{$type}},$env{'user.domain'});
7353: }
7354: if ($dom eq $env{'user.domain'}) {
7355: $can_request->{$type} = 1;
7356: }
7357: }
7358: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
7359: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7360: if (@curr > 0) {
7361: foreach my $item (@curr) {
7362: if (ref($request_domains) eq 'HASH') {
7363: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7364: if ($otherdom ne '') {
7365: if (ref($request_domains->{$type}) eq 'ARRAY') {
7366: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7367: push(@{$request_domains->{$type}},$otherdom);
7368: }
7369: } else {
7370: push(@{$request_domains->{$type}},$otherdom);
7371: }
7372: }
7373: }
7374: }
7375: unless($dom eq $env{'user.domain'}) {
7376: $canreq ++;
7377: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7378: $can_request->{$type} = 1;
7379: }
7380: }
7381: }
7382: }
7383: }
7384: }
7385: return $canreq;
7386: }
7387:
7388: # ---------------------------------------------- Custom access rule evaluation
7389:
7390: sub customaccess {
7391: my ($priv,$uri)=@_;
7392: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7393: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7394: $udom = &LONCAPA::clean_domain($udom);
7395: $ucrs = &LONCAPA::clean_username($ucrs);
7396: my $access=0;
7397: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7398: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7399: if ($type eq 'user') {
7400: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7401: my ($tdom,$tuname)=split(m{/},$scope);
7402: if ($tdom) {
7403: if ($tdom ne $env{'user.domain'}) { next; }
7404: }
7405: if ($tuname) {
7406: if ($tuname ne $env{'user.name'}) { next; }
7407: }
7408: $access=($effect eq 'allow');
7409: last;
7410: }
7411: } else {
7412: if ($role) {
7413: if ($role ne $urole) { next; }
7414: }
7415: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7416: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7417: if ($tdom) {
7418: if ($tdom ne $udom) { next; }
7419: }
7420: if ($tcrs) {
7421: if ($tcrs ne $ucrs) { next; }
7422: }
7423: if ($tsec) {
7424: if ($tsec ne $usec) { next; }
7425: }
7426: $access=($effect eq 'allow');
7427: last;
7428: }
7429: if ($realm eq '' && $role eq '') {
7430: $access=($effect eq 'allow');
7431: }
7432: }
7433: }
7434: return $access;
7435: }
7436:
7437: # ------------------------------------------------- Check for a user privilege
7438:
7439: sub allowed {
7440: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7441: my $ver_orguri=$uri;
7442: $uri=&deversion($uri);
7443: my $orguri=$uri;
7444: $uri=&declutter($uri);
7445:
7446: if ($priv eq 'evb') {
7447: # Evade communication block restrictions for specified role in a course
7448: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7449: return $1;
7450: } else {
7451: return;
7452: }
7453: }
7454:
7455: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7456: # Free bre access to adm and meta resources
7457: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7458: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7459: && ($priv eq 'bre')) {
7460: return 'F';
7461: }
7462:
7463: # Free bre access to user's own portfolio contents
7464: my ($space,$domain,$name,@dir)=split('/',$uri);
7465: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7466: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7467: my %setters;
7468: my ($startblock,$endblock) =
7469: &Apache::loncommon::blockcheck(\%setters,'port');
7470: if ($startblock && $endblock) {
7471: return 'B';
7472: } else {
7473: return 'F';
7474: }
7475: }
7476:
7477: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7478: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7479: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7480: if (exists($env{'request.course.id'})) {
7481: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7482: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7483: if (($domain eq $cdom) && ($name eq $cnum)) {
7484: my $courseprivid=$env{'request.course.id'};
7485: $courseprivid=~s/\_/\//;
7486: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7487: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7488: return $1;
7489: } else {
7490: if ($env{'request.course.sec'}) {
7491: $courseprivid.='/'.$env{'request.course.sec'};
7492: }
7493: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7494: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7495: return $2;
7496: }
7497: }
7498: }
7499: }
7500: }
7501:
7502: # Free bre to public access
7503:
7504: if ($priv eq 'bre') {
7505: my $copyright=&metadata($uri,'copyright');
7506: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7507: return 'F';
7508: }
7509: if ($copyright eq 'priv') {
7510: $uri=~/([^\/]+)\/([^\/]+)\//;
7511: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7512: return '';
7513: }
7514: }
7515: if ($copyright eq 'domain') {
7516: $uri=~/([^\/]+)\/([^\/]+)\//;
7517: unless (($env{'user.domain'} eq $1) ||
7518: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7519: return '';
7520: }
7521: }
7522: if ($env{'request.role'}=~ /li\.\//) {
7523: # Library role, so allow browsing of resources in this domain.
7524: return 'F';
7525: }
7526: if ($copyright eq 'custom') {
7527: unless (&customaccess($priv,$uri)) { return ''; }
7528: }
7529: }
7530: # Domain coordinator is trying to create a course
7531: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7532: # uri is the requested domain in this case.
7533: # comparison to 'request.role.domain' shows if the user has selected
7534: # a role of dc for the domain in question.
7535: return 'F' if ($uri eq $env{'request.role.domain'});
7536: }
7537:
7538: my $thisallowed='';
7539: my $statecond=0;
7540: my $courseprivid='';
7541:
7542: my $ownaccess;
7543: # Community Coordinator or Assistant Co-author browsing resource space.
7544: if (($priv eq 'bro') && ($env{'user.author'})) {
7545: if ($uri eq '') {
7546: $ownaccess = 1;
7547: } else {
7548: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7549: my $udom = $env{'user.domain'};
7550: my $uname = $env{'user.name'};
7551: if ($uri =~ m{^\Q$udom\E/?$}) {
7552: $ownaccess = 1;
7553: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7554: unless ($uri =~ m{\.\./}) {
7555: $ownaccess = 1;
7556: }
7557: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7558: my $now = time;
7559: if ($uri =~ m{^([^/]+)/?$}) {
7560: my $adom = $1;
7561: foreach my $key (keys(%env)) {
7562: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7563: my ($start,$end) = split('.',$env{$key});
7564: if (($now >= $start) && (!$end || $end < $now)) {
7565: $ownaccess = 1;
7566: last;
7567: }
7568: }
7569: }
7570: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7571: my $adom = $1;
7572: my $aname = $2;
7573: foreach my $role ('ca','aa') {
7574: if ($env{"user.role.$role./$adom/$aname"}) {
7575: my ($start,$end) =
7576: split('.',$env{"user.role.$role./$adom/$aname"});
7577: if (($now >= $start) && (!$end || $end < $now)) {
7578: $ownaccess = 1;
7579: last;
7580: }
7581: }
7582: }
7583: }
7584: }
7585: }
7586: }
7587: }
7588:
7589: # Course
7590:
7591: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7592: unless (($priv eq 'bro') && (!$ownaccess)) {
7593: $thisallowed.=$1;
7594: }
7595: }
7596:
7597: # Domain
7598:
7599: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7600: =~/\Q$priv\E\&([^\:]*)/) {
7601: unless (($priv eq 'bro') && (!$ownaccess)) {
7602: $thisallowed.=$1;
7603: }
7604: }
7605:
7606: # User who is not author or co-author might still be able to edit
7607: # resource of an author in the domain (e.g., if Domain Coordinator).
7608: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7609: (&allowed('mdc',$env{'request.course.id'}))) {
7610: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7611: $thisallowed.=$1;
7612: }
7613: }
7614:
7615: # Course: uri itself is a course
7616: my $courseuri=$uri;
7617: $courseuri=~s/\_(\d)/\/$1/;
7618: $courseuri=~s/^([^\/])/\/$1/;
7619:
7620: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7621: =~/\Q$priv\E\&([^\:]*)/) {
7622: unless (($priv eq 'bro') && (!$ownaccess)) {
7623: $thisallowed.=$1;
7624: }
7625: }
7626:
7627: # URI is an uploaded document for this course, default permissions don't matter
7628: # not allowing 'edit' access (editupload) to uploaded course docs
7629: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7630: $thisallowed='';
7631: my ($match)=&is_on_map($uri);
7632: if ($match) {
7633: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7634: =~/\Q$priv\E\&([^\:]*)/) {
7635: my $value = $1;
7636: if ($noblockcheck) {
7637: $thisallowed.=$value;
7638: } else {
7639: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7640: if (@blockers > 0) {
7641: $thisallowed = 'B';
7642: } else {
7643: $thisallowed.=$value;
7644: }
7645: }
7646: }
7647: } else {
7648: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7649: if ($refuri) {
7650: if ($refuri =~ m|^/adm/|) {
7651: $thisallowed='F';
7652: } else {
7653: $refuri=&declutter($refuri);
7654: my ($match) = &is_on_map($refuri);
7655: if ($match) {
7656: if ($noblockcheck) {
7657: $thisallowed='F';
7658: } else {
7659: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7660: if (@blockers > 0) {
7661: $thisallowed = 'B';
7662: } else {
7663: $thisallowed='F';
7664: }
7665: }
7666: }
7667: }
7668: }
7669: }
7670: }
7671:
7672: if ($priv eq 'bre'
7673: && $thisallowed ne 'F'
7674: && $thisallowed ne '2'
7675: && &is_portfolio_url($uri)) {
7676: $thisallowed = &portfolio_access($uri,$clientip);
7677: }
7678:
7679: # Full access at system, domain or course-wide level? Exit.
7680: if ($thisallowed=~/F/) {
7681: return 'F';
7682: }
7683:
7684: # If this is generating or modifying users, exit with special codes
7685:
7686: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7687: if (($priv eq 'cca') || ($priv eq 'caa')) {
7688: my ($audom,$auname)=split('/',$uri);
7689: # no author name given, so this just checks on the general right to make a co-author in this domain
7690: unless ($auname) { return $thisallowed; }
7691: # an author name is given, so we are about to actually make a co-author for a certain account
7692: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7693: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7694: ($audom ne $env{'request.role.domain'}))) { return ''; }
7695: }
7696: return $thisallowed;
7697: }
7698: #
7699: # Gathered so far: system, domain and course wide privileges
7700: #
7701: # Course: See if uri or referer is an individual resource that is part of
7702: # the course
7703:
7704: if ($env{'request.course.id'}) {
7705:
7706: $courseprivid=$env{'request.course.id'};
7707: if ($env{'request.course.sec'}) {
7708: $courseprivid.='/'.$env{'request.course.sec'};
7709: }
7710: $courseprivid=~s/\_/\//;
7711: my $checkreferer=1;
7712: my ($match,$cond)=&is_on_map($uri);
7713: if ($match) {
7714: $statecond=$cond;
7715: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7716: =~/\Q$priv\E\&([^\:]*)/) {
7717: my $value = $1;
7718: if ($priv eq 'bre') {
7719: if ($noblockcheck) {
7720: $thisallowed.=$value;
7721: } else {
7722: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7723: if (@blockers > 0) {
7724: $thisallowed = 'B';
7725: } else {
7726: $thisallowed.=$value;
7727: }
7728: }
7729: } else {
7730: $thisallowed.=$value;
7731: }
7732: $checkreferer=0;
7733: }
7734: }
7735:
7736: if ($checkreferer) {
7737: my $refuri=$env{'httpref.'.$orguri};
7738: unless ($refuri) {
7739: foreach my $key (keys(%env)) {
7740: if ($key=~/^httpref\..*\*/) {
7741: my $pattern=$key;
7742: $pattern=~s/^httpref\.\/res\///;
7743: $pattern=~s/\*/\[\^\/\]\+/g;
7744: $pattern=~s/\//\\\//g;
7745: if ($orguri=~/$pattern/) {
7746: $refuri=$env{$key};
7747: }
7748: }
7749: }
7750: }
7751:
7752: if ($refuri) {
7753: $refuri=&declutter($refuri);
7754: my ($match,$cond)=&is_on_map($refuri);
7755: if ($match) {
7756: my $refstatecond=$cond;
7757: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7758: =~/\Q$priv\E\&([^\:]*)/) {
7759: my $value = $1;
7760: if ($priv eq 'bre') {
7761: if ($noblockcheck) {
7762: $thisallowed.=$value;
7763: } else {
7764: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7765: if (@blockers > 0) {
7766: $thisallowed = 'B';
7767: } else {
7768: $thisallowed.=$value;
7769: }
7770: }
7771: } else {
7772: $thisallowed.=$value;
7773: }
7774: $uri=$refuri;
7775: $statecond=$refstatecond;
7776: }
7777: }
7778: }
7779: }
7780: }
7781:
7782: #
7783: # Gathered now: all privileges that could apply, and condition number
7784: #
7785: #
7786: # Full or no access?
7787: #
7788:
7789: if ($thisallowed=~/F/) {
7790: return 'F';
7791: }
7792:
7793: unless ($thisallowed) {
7794: return '';
7795: }
7796:
7797: # Restrictions exist, deal with them
7798: #
7799: # C:according to course preferences
7800: # R:according to resource settings
7801: # L:unless locked
7802: # X:according to user session state
7803: #
7804:
7805: # Possibly locked functionality, check all courses
7806: # Locks might take effect only after 10 minutes cache expiration for other
7807: # courses, and 2 minutes for current course
7808:
7809: my $envkey;
7810: if ($thisallowed=~/L/) {
7811: foreach $envkey (keys(%env)) {
7812: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7813: my $courseid=$2;
7814: my $roleid=$1.'.'.$2;
7815: $courseid=~s/^\///;
7816: my $expiretime=600;
7817: if ($env{'request.role'} eq $roleid) {
7818: $expiretime=120;
7819: }
7820: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7821: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7822: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7823: &coursedescription($courseid,{'freshen_cache' => 1});
7824: }
7825: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7826: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7827: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7828: &log($env{'user.domain'},$env{'user.name'},
7829: $env{'user.home'},
7830: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7831: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7832: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7833: return '';
7834: }
7835: }
7836: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7837: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7838: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7839: &log($env{'user.domain'},$env{'user.name'},
7840: $env{'user.home'},
7841: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7842: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7843: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7844: return '';
7845: }
7846: }
7847: }
7848: }
7849: }
7850:
7851: #
7852: # Rest of the restrictions depend on selected course
7853: #
7854:
7855: unless ($env{'request.course.id'}) {
7856: if ($thisallowed eq 'A') {
7857: return 'A';
7858: } elsif ($thisallowed eq 'B') {
7859: return 'B';
7860: } else {
7861: return '1';
7862: }
7863: }
7864:
7865: #
7866: # Now user is definitely in a course
7867: #
7868:
7869:
7870: # Course preferences
7871:
7872: if ($thisallowed=~/C/) {
7873: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7874: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7875: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7876: =~/\Q$rolecode\E/) {
7877: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7878: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7879: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7880: $env{'request.course.id'});
7881: }
7882: return '';
7883: }
7884:
7885: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7886: =~/\Q$unamedom\E/) {
7887: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7888: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7889: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7890: $env{'request.course.id'});
7891: }
7892: return '';
7893: }
7894: }
7895:
7896: # Resource preferences
7897:
7898: if ($thisallowed=~/R/) {
7899: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7900: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7901: if (($priv ne 'pch') && ($priv ne 'plc')) {
7902: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7903: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7904: }
7905: return '';
7906: }
7907: }
7908:
7909: # Restricted by state or randomout?
7910:
7911: if ($thisallowed=~/X/) {
7912: if ($env{'acc.randomout'}) {
7913: if (!$symb) { $symb=&symbread($uri,1); }
7914: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7915: return '';
7916: }
7917: }
7918: if (&condval($statecond)) {
7919: return '2';
7920: } else {
7921: return '';
7922: }
7923: }
7924:
7925: if ($thisallowed eq 'A') {
7926: return 'A';
7927: } elsif ($thisallowed eq 'B') {
7928: return 'B';
7929: }
7930: return 'F';
7931: }
7932:
7933: # ------------------------------------------- Check construction space access
7934:
7935: sub constructaccess {
7936: my ($url,$setpriv)=@_;
7937:
7938: # We do not allow editing of previous versions of files
7939: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7940:
7941: # Get username and domain from URL
7942: my ($ownername,$ownerdomain,$ownerhome);
7943:
7944: ($ownerdomain,$ownername) =
7945: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
7946:
7947: # The URL does not really point to any authorspace, forget it
7948: unless (($ownername) && ($ownerdomain)) { return ''; }
7949:
7950: # Now we need to see if the user has access to the authorspace of
7951: # $ownername at $ownerdomain
7952:
7953: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7954: # Real author for this?
7955: $ownerhome = $env{'user.home'};
7956: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7957: return ($ownername,$ownerdomain,$ownerhome);
7958: }
7959: } else {
7960: # Co-author for this?
7961: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7962: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7963: $ownerhome = &homeserver($ownername,$ownerdomain);
7964: return ($ownername,$ownerdomain,$ownerhome);
7965: }
7966: if ($env{'request.course.id'}) {
7967: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
7968: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
7969: if (&allowed('mdc',$env{'request.course.id'})) {
7970: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
7971: return ($ownername,$ownerdomain,$ownerhome);
7972: }
7973: }
7974: }
7975: }
7976:
7977: # We don't have any access right now. If we are not possibly going to do anything about this,
7978: # we might as well leave
7979: unless ($setpriv) { return ''; }
7980:
7981: # Backdoor access?
7982: my $allowed=&allowed('eco',$ownerdomain);
7983: # Nope
7984: unless ($allowed) { return ''; }
7985: # Looks like we may have access, but could be locked by the owner of the construction space
7986: if ($allowed eq 'U') {
7987: my %blocked=&get('environment',['domcoord.author'],
7988: $ownerdomain,$ownername);
7989: # Is blocked by owner
7990: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7991: }
7992: if (($allowed eq 'F') || ($allowed eq 'U')) {
7993: # Grant temporary access
7994: my $then=$env{'user.login.time'};
7995: my $update=$env{'user.update.time'};
7996: if (!$update) { $update = $then; }
7997: my $refresh=$env{'user.refresh.time'};
7998: if (!$refresh) { $refresh = $update; }
7999: my $now = time;
8000: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8001: $now,'ca','constructaccess');
8002: $ownerhome = &homeserver($ownername,$ownerdomain);
8003: return($ownername,$ownerdomain,$ownerhome);
8004: }
8005: # No business here
8006: return '';
8007: }
8008:
8009: # ----------------------------------------------------------- Content Blocking
8010:
8011: {
8012: # Caches for faster Course Contents display where content blocking
8013: # is in operation (i.e., interval param set) for timed quiz.
8014: #
8015: # User for whom data are being temporarily cached.
8016: my $cacheduser='';
8017: # Cached blockers for this user (a hash of blocking items).
8018: my %cachedblockers=();
8019: # When the data were last cached.
8020: my $cachedlast='';
8021:
8022: sub load_all_blockers {
8023: my ($uname,$udom,$blocks)=@_;
8024: if (($uname ne '') && ($udom ne '')) {
8025: if (($cacheduser eq $uname.':'.$udom) &&
8026: (abs($cachedlast-time)<5)) {
8027: return;
8028: }
8029: }
8030: $cachedlast=time;
8031: $cacheduser=$uname.':'.$udom;
8032: %cachedblockers = &get_commblock_resources($blocks);
8033: }
8034:
8035: sub get_comm_blocks {
8036: my ($cdom,$cnum) = @_;
8037: if ($cdom eq '' || $cnum eq '') {
8038: return unless ($env{'request.course.id'});
8039: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8040: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8041: }
8042: my %commblocks;
8043: my $hashid=$cdom.'_'.$cnum;
8044: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8045: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8046: %commblocks = %{$blocksref};
8047: } else {
8048: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8049: my $cachetime = 600;
8050: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8051: }
8052: return %commblocks;
8053: }
8054:
8055: sub get_commblock_resources {
8056: my ($blocks) = @_;
8057: my %blockers = ();
8058: return %blockers unless ($env{'request.course.id'});
8059: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8060: my %commblocks;
8061: if (ref($blocks) eq 'HASH') {
8062: %commblocks = %{$blocks};
8063: } else {
8064: %commblocks = &get_comm_blocks();
8065: }
8066: return %blockers unless (keys(%commblocks) > 0);
8067: my $navmap = Apache::lonnavmaps::navmap->new();
8068: return %blockers unless (ref($navmap));
8069: my $now = time;
8070: foreach my $block (keys(%commblocks)) {
8071: if ($block =~ /^(\d+)____(\d+)$/) {
8072: my ($start,$end) = ($1,$2);
8073: if ($start <= $now && $end >= $now) {
8074: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8075: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8076: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8077: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8078: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8079: }
8080: }
8081: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8082: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8083: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8084: }
8085: }
8086: }
8087: }
8088: }
8089: } elsif ($block =~ /^firstaccess____(.+)$/) {
8090: my $item = $1;
8091: my @to_test;
8092: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8093: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8094: my @interval;
8095: my $type = 'map';
8096: if ($item eq 'course') {
8097: $type = 'course';
8098: @interval=&EXT("resource.0.interval");
8099: } else {
8100: if ($item =~ /___\d+___/) {
8101: $type = 'resource';
8102: @interval=&EXT("resource.0.interval",$item);
8103: if (ref($navmap)) {
8104: my $res = $navmap->getBySymb($item);
8105: push(@to_test,$res);
8106: }
8107: } else {
8108: my $mapsymb = &symbread($item,1);
8109: if ($mapsymb) {
8110: if (ref($navmap)) {
8111: my $mapres = $navmap->getBySymb($mapsymb);
8112: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8113: foreach my $res (@to_test) {
8114: my $symb = $res->symb();
8115: next if ($symb eq $mapsymb);
8116: if ($symb ne '') {
8117: @interval=&EXT("resource.0.interval",$symb);
8118: if ($interval[1] eq 'map') {
8119: last;
8120: }
8121: }
8122: }
8123: }
8124: }
8125: }
8126: }
8127: if ($interval[0] =~ /^(\d+)/) {
8128: my $timelimit = $1;
8129: my $first_access;
8130: if ($type eq 'resource') {
8131: $first_access=&get_first_access($interval[1],$item);
8132: } elsif ($type eq 'map') {
8133: $first_access=&get_first_access($interval[1],undef,$item);
8134: } else {
8135: $first_access=&get_first_access($interval[1]);
8136: }
8137: if ($first_access) {
8138: my $timesup = $first_access+$timelimit;
8139: if ($timesup > $now) {
8140: my $activeblock;
8141: foreach my $res (@to_test) {
8142: if ($res->answerable()) {
8143: $activeblock = 1;
8144: last;
8145: }
8146: }
8147: if ($activeblock) {
8148: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8149: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8150: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8151: }
8152: }
8153: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8154: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8155: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8156: }
8157: }
8158: }
8159: }
8160: }
8161: }
8162: }
8163: }
8164: }
8165: }
8166: return %blockers;
8167: }
8168:
8169: sub has_comm_blocking {
8170: my ($priv,$symb,$uri,$blocks) = @_;
8171: my @blockers;
8172: return unless ($env{'request.course.id'});
8173: return unless ($priv eq 'bre');
8174: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8175: return if ($env{'request.state'} eq 'construct');
8176: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8177: return unless (keys(%cachedblockers) > 0);
8178: my (%possibles,@symbs);
8179: if (!$symb) {
8180: $symb = &symbread($uri,1,1,1,\%possibles);
8181: }
8182: if ($symb) {
8183: @symbs = ($symb);
8184: } elsif (keys(%possibles)) {
8185: @symbs = keys(%possibles);
8186: }
8187: my $noblock;
8188: foreach my $symb (@symbs) {
8189: last if ($noblock);
8190: my ($map,$resid,$resurl)=&decode_symb($symb);
8191: foreach my $block (keys(%cachedblockers)) {
8192: if ($block =~ /^firstaccess____(.+)$/) {
8193: my $item = $1;
8194: if (($item eq $map) || ($item eq $symb)) {
8195: $noblock = 1;
8196: last;
8197: }
8198: }
8199: if (ref($cachedblockers{$block}) eq 'HASH') {
8200: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8201: if ($cachedblockers{$block}{'resources'}{$symb}) {
8202: unless (grep(/^\Q$block\E$/,@blockers)) {
8203: push(@blockers,$block);
8204: }
8205: }
8206: }
8207: }
8208: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8209: if ($cachedblockers{$block}{'maps'}{$map}) {
8210: unless (grep(/^\Q$block\E$/,@blockers)) {
8211: push(@blockers,$block);
8212: }
8213: }
8214: }
8215: }
8216: }
8217: return if ($noblock);
8218: return @blockers;
8219: }
8220: }
8221:
8222: # -------------------------------- Deversion and split uri into path an filename
8223:
8224: #
8225: # Removes the version from a URI and
8226: # splits it in to its filename and path to the filename.
8227: # Seems like File::Basename could have done this more clearly.
8228: # Parameters:
8229: # $uri - input URI
8230: # Returns:
8231: # Two element list consisting of
8232: # $pathname - the URI up to and excluding the trailing /
8233: # $filename - The part of the URI following the last /
8234: # NOTE:
8235: # Another realization of this is simply:
8236: # use File::Basename;
8237: # ...
8238: # $uri = shift;
8239: # $filename = basename($uri);
8240: # $path = dirname($uri);
8241: # return ($filename, $path);
8242: #
8243: # The implementation below is probably faster however.
8244: #
8245: sub split_uri_for_cond {
8246: my $uri=&deversion(&declutter(shift));
8247: my @uriparts=split(/\//,$uri);
8248: my $filename=pop(@uriparts);
8249: my $pathname=join('/',@uriparts);
8250: return ($pathname,$filename);
8251: }
8252: # --------------------------------------------------- Is a resource on the map?
8253:
8254: sub is_on_map {
8255: my ($pathname,$filename) = &split_uri_for_cond(shift);
8256: #Trying to find the conditional for the file
8257: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8258: /\&\Q$filename\E\:([\d\|]+)\&/);
8259: if ($match) {
8260: return (1,$1);
8261: } else {
8262: return (0,0);
8263: }
8264: }
8265:
8266: # --------------------------------------------------------- Get symb from alias
8267:
8268: sub get_symb_from_alias {
8269: my $symb=shift;
8270: my ($map,$resid,$url)=&decode_symb($symb);
8271: # Already is a symb
8272: if ($url) { return $symb; }
8273: # Must be an alias
8274: my $aliassymb='';
8275: my %bighash;
8276: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8277: &GDBM_READER(),0640)) {
8278: my $rid=$bighash{'mapalias_'.$symb};
8279: if ($rid) {
8280: my ($mapid,$resid)=split(/\./,$rid);
8281: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8282: $resid,$bighash{'src_'.$rid});
8283: }
8284: untie %bighash;
8285: }
8286: return $aliassymb;
8287: }
8288:
8289: # ----------------------------------------------------------------- Define Role
8290:
8291: sub definerole {
8292: if (allowed('mcr','/')) {
8293: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8294: foreach my $role (split(':',$sysrole)) {
8295: my ($crole,$cqual)=split(/\&/,$role);
8296: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8297: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8298: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8299: return "refused:s:$crole&$cqual";
8300: }
8301: }
8302: }
8303: foreach my $role (split(':',$domrole)) {
8304: my ($crole,$cqual)=split(/\&/,$role);
8305: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8306: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8307: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8308: return "refused:d:$crole&$cqual";
8309: }
8310: }
8311: }
8312: foreach my $role (split(':',$courole)) {
8313: my ($crole,$cqual)=split(/\&/,$role);
8314: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8315: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8316: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8317: return "refused:c:$crole&$cqual";
8318: }
8319: }
8320: }
8321: my $uhome;
8322: if (($uname ne '') && ($udom ne '')) {
8323: $uhome = &homeserver($uname,$udom);
8324: return $uhome if ($uhome eq 'no_host');
8325: } else {
8326: $uname = $env{'user.name'};
8327: $udom = $env{'user.domain'};
8328: $uhome = $env{'user.home'};
8329: }
8330: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8331: "$udom:$uname:rolesdef_$rolename=".
8332: escape($sysrole.'_'.$domrole.'_'.$courole);
8333: return reply($command,$uhome);
8334: } else {
8335: return 'refused';
8336: }
8337: }
8338:
8339: # ---------------- Make a metadata query against the network of library servers
8340:
8341: sub metadata_query {
8342: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8343: my %rhash;
8344: my %libserv = &all_library();
8345: my @server_list = (defined($server_array) ? @$server_array
8346: : keys(%libserv) );
8347: for my $server (@server_list) {
8348: my $domains = '';
8349: if (ref($domains_hash) eq 'HASH') {
8350: $domains = $domains_hash->{$server};
8351: }
8352: unless ($custom or $customshow) {
8353: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8354: $rhash{$server}=$reply;
8355: }
8356: else {
8357: my $reply=&reply("querysend:".&escape($query).':'.
8358: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8359: $server);
8360: $rhash{$server}=$reply;
8361: }
8362: }
8363: return \%rhash;
8364: }
8365:
8366: # ----------------------------------------- Send log queries and wait for reply
8367:
8368: sub log_query {
8369: my ($uname,$udom,$query,%filters)=@_;
8370: my $uhome=&homeserver($uname,$udom);
8371: if ($uhome eq 'no_host') { return 'error: no_host'; }
8372: my $uhost=&hostname($uhome);
8373: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8374: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8375: $uhome);
8376: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8377: return get_query_reply($queryid);
8378: }
8379:
8380: # -------------------------- Update MySQL table for portfolio file
8381:
8382: sub update_portfolio_table {
8383: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8384: if ($group ne '') {
8385: $file_name =~s /^\Q$group\E//;
8386: }
8387: my $homeserver = &homeserver($uname,$udom);
8388: my $queryid=
8389: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8390: ':'.&escape($file_name).':'.$action,$homeserver);
8391: my $reply = &get_query_reply($queryid);
8392: return $reply;
8393: }
8394:
8395: # -------------------------- Update MySQL allusers table
8396:
8397: sub update_allusers_table {
8398: my ($uname,$udom,$names) = @_;
8399: my $homeserver = &homeserver($uname,$udom);
8400: my $queryid=
8401: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8402: 'lastname='.&escape($names->{'lastname'}).'%%'.
8403: 'firstname='.&escape($names->{'firstname'}).'%%'.
8404: 'middlename='.&escape($names->{'middlename'}).'%%'.
8405: 'generation='.&escape($names->{'generation'}).'%%'.
8406: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8407: 'id='.&escape($names->{'id'}),$homeserver);
8408: return;
8409: }
8410:
8411: # ------- Request retrieval of institutional classlists for course(s)
8412:
8413: sub fetch_enrollment_query {
8414: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8415: my ($homeserver,$sleep,$loopmax);
8416: my $maxtries = 1;
8417: if ($context eq 'automated') {
8418: $homeserver = $perlvar{'lonHostID'};
8419: $sleep = 2;
8420: $loopmax = 100;
8421: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8422: } else {
8423: $homeserver = &homeserver($cnum,$dom);
8424: }
8425: my $host=&hostname($homeserver);
8426: my $cmd = '';
8427: foreach my $affiliate (keys(%{$affiliatesref})) {
8428: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8429: }
8430: $cmd =~ s/%%$//;
8431: $cmd = &escape($cmd);
8432: my $query = 'fetchenrollment';
8433: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8434: unless ($queryid=~/^\Q$host\E\_/) {
8435: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8436: return 'error: '.$queryid;
8437: }
8438: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8439: my $tries = 1;
8440: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8441: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8442: $tries ++;
8443: }
8444: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8445: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8446: } else {
8447: my @responses = split(/:/,$reply);
8448: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8449: foreach my $line (@responses) {
8450: my ($key,$value) = split(/=/,$line,2);
8451: $$replyref{$key} = $value;
8452: }
8453: } else {
8454: my $pathname = LONCAPA::tempdir();
8455: foreach my $line (@responses) {
8456: my ($key,$value) = split(/=/,$line);
8457: $$replyref{$key} = $value;
8458: if ($value > 0) {
8459: foreach my $item (@{$$affiliatesref{$key}}) {
8460: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8461: my $destname = $pathname.'/'.$filename;
8462: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8463: if ($xml_classlist =~ /^error/) {
8464: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8465: } else {
8466: if ( open(FILE,">$destname") ) {
8467: print FILE &unescape($xml_classlist);
8468: close(FILE);
8469: } else {
8470: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8471: }
8472: }
8473: }
8474: }
8475: }
8476: }
8477: return 'ok';
8478: }
8479: return 'error';
8480: }
8481:
8482: sub get_query_reply {
8483: my ($queryid,$sleep,$loopmax) = @_;;
8484: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8485: $sleep = 0.2;
8486: }
8487: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8488: $loopmax = 100;
8489: }
8490: my $replyfile=LONCAPA::tempdir().$queryid;
8491: my $reply='';
8492: for (1..$loopmax) {
8493: sleep($sleep);
8494: if (-e $replyfile.'.end') {
8495: if (open(my $fh,$replyfile)) {
8496: $reply = join('',<$fh>);
8497: close($fh);
8498: } else { return 'error: reply_file_error'; }
8499: return &unescape($reply);
8500: }
8501: }
8502: return 'timeout:'.$queryid;
8503: }
8504:
8505: sub courselog_query {
8506: #
8507: # possible filters:
8508: # url: url or symb
8509: # username
8510: # domain
8511: # action: view, submit, grade
8512: # start: timestamp
8513: # end: timestamp
8514: #
8515: my (%filters)=@_;
8516: unless ($env{'request.course.id'}) { return 'no_course'; }
8517: if ($filters{'url'}) {
8518: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8519: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8520: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8521: }
8522: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8523: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8524: return &log_query($cname,$cdom,'courselog',%filters);
8525: }
8526:
8527: sub userlog_query {
8528: #
8529: # possible filters:
8530: # action: log check role
8531: # start: timestamp
8532: # end: timestamp
8533: #
8534: my ($uname,$udom,%filters)=@_;
8535: return &log_query($uname,$udom,'userlog',%filters);
8536: }
8537:
8538: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8539:
8540: sub auto_run {
8541: my ($cnum,$cdom) = @_;
8542: my $response = 0;
8543: my $settings;
8544: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8545: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8546: $settings = $domconfig{'autoenroll'};
8547: if ($settings->{'run'} eq '1') {
8548: $response = 1;
8549: }
8550: } else {
8551: my $homeserver;
8552: if (&is_course($cdom,$cnum)) {
8553: $homeserver = &homeserver($cnum,$cdom);
8554: } else {
8555: $homeserver = &domain($cdom,'primary');
8556: }
8557: if ($homeserver ne 'no_host') {
8558: $response = &reply('autorun:'.$cdom,$homeserver);
8559: }
8560: }
8561: return $response;
8562: }
8563:
8564: sub auto_get_sections {
8565: my ($cnum,$cdom,$inst_coursecode) = @_;
8566: my $homeserver;
8567: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8568: $homeserver = &homeserver($cnum,$cdom);
8569: }
8570: if (!defined($homeserver)) {
8571: if ($cdom =~ /^$match_domain$/) {
8572: $homeserver = &domain($cdom,'primary');
8573: }
8574: }
8575: my @secs;
8576: if (defined($homeserver)) {
8577: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8578: unless ($response eq 'refused') {
8579: @secs = split(/:/,$response);
8580: }
8581: }
8582: return @secs;
8583: }
8584:
8585: sub auto_new_course {
8586: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8587: my $homeserver = &homeserver($cnum,$cdom);
8588: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8589: return $response;
8590: }
8591:
8592: sub auto_validate_courseID {
8593: my ($cnum,$cdom,$inst_course_id) = @_;
8594: my $homeserver = &homeserver($cnum,$cdom);
8595: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8596: return $response;
8597: }
8598:
8599: sub auto_validate_instcode {
8600: my ($cnum,$cdom,$instcode,$owner) = @_;
8601: my ($homeserver,$response);
8602: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8603: $homeserver = &homeserver($cnum,$cdom);
8604: }
8605: if (!defined($homeserver)) {
8606: if ($cdom =~ /^$match_domain$/) {
8607: $homeserver = &domain($cdom,'primary');
8608: }
8609: }
8610: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8611: &escape($instcode).':'.&escape($owner),$homeserver));
8612: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8613: return ($outcome,$description,$defaultcredits);
8614: }
8615:
8616: sub auto_create_password {
8617: my ($cnum,$cdom,$authparam,$udom) = @_;
8618: my ($homeserver,$response);
8619: my $create_passwd = 0;
8620: my $authchk = '';
8621: if ($udom =~ /^$match_domain$/) {
8622: $homeserver = &domain($udom,'primary');
8623: }
8624: if ($homeserver eq '') {
8625: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8626: $homeserver = &homeserver($cnum,$cdom);
8627: }
8628: }
8629: if ($homeserver eq '') {
8630: $authchk = 'nodomain';
8631: } else {
8632: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8633: if ($response eq 'refused') {
8634: $authchk = 'refused';
8635: } else {
8636: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8637: }
8638: }
8639: return ($authparam,$create_passwd,$authchk);
8640: }
8641:
8642: sub auto_photo_permission {
8643: my ($cnum,$cdom,$students) = @_;
8644: my $homeserver = &homeserver($cnum,$cdom);
8645: my ($outcome,$perm_reqd,$conditions) =
8646: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8647: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8648: return (undef,undef);
8649: }
8650: return ($outcome,$perm_reqd,$conditions);
8651: }
8652:
8653: sub auto_checkphotos {
8654: my ($uname,$udom,$pid) = @_;
8655: my $homeserver = &homeserver($uname,$udom);
8656: my ($result,$resulttype);
8657: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8658: &escape($uname).':'.&escape($pid),
8659: $homeserver));
8660: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8661: return (undef,undef);
8662: }
8663: if ($outcome) {
8664: ($result,$resulttype) = split(/:/,$outcome);
8665: }
8666: return ($result,$resulttype);
8667: }
8668:
8669: sub auto_photochoice {
8670: my ($cnum,$cdom) = @_;
8671: my $homeserver = &homeserver($cnum,$cdom);
8672: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8673: &escape($cdom),
8674: $homeserver)));
8675: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8676: return (undef,undef);
8677: }
8678: return ($update,$comment);
8679: }
8680:
8681: sub auto_photoupdate {
8682: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8683: my $homeserver = &homeserver($cnum,$dom);
8684: my $host=&hostname($homeserver);
8685: my $cmd = '';
8686: my $maxtries = 1;
8687: foreach my $affiliate (keys(%{$affiliatesref})) {
8688: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8689: }
8690: $cmd =~ s/%%$//;
8691: $cmd = &escape($cmd);
8692: my $query = 'institutionalphotos';
8693: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8694: unless ($queryid=~/^\Q$host\E\_/) {
8695: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8696: return 'error: '.$queryid;
8697: }
8698: my $reply = &get_query_reply($queryid);
8699: my $tries = 1;
8700: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8701: $reply = &get_query_reply($queryid);
8702: $tries ++;
8703: }
8704: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8705: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8706: } else {
8707: my @responses = split(/:/,$reply);
8708: my $outcome = shift(@responses);
8709: foreach my $item (@responses) {
8710: my ($key,$value) = split(/=/,$item);
8711: $$photo{$key} = $value;
8712: }
8713: return $outcome;
8714: }
8715: return 'error';
8716: }
8717:
8718: sub auto_instcode_format {
8719: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8720: $cat_order) = @_;
8721: my $courses = '';
8722: my @homeservers;
8723: if ($caller eq 'global') {
8724: my %servers = &get_servers($codedom,'library');
8725: foreach my $tryserver (keys(%servers)) {
8726: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8727: push(@homeservers,$tryserver);
8728: }
8729: }
8730: } elsif ($caller eq 'requests') {
8731: if ($codedom =~ /^$match_domain$/) {
8732: my $chome = &domain($codedom,'primary');
8733: unless ($chome eq 'no_host') {
8734: push(@homeservers,$chome);
8735: }
8736: }
8737: } else {
8738: push(@homeservers,&homeserver($caller,$codedom));
8739: }
8740: foreach my $code (keys(%{$instcodes})) {
8741: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8742: }
8743: chop($courses);
8744: my $ok_response = 0;
8745: my $response;
8746: while (@homeservers > 0 && $ok_response == 0) {
8747: my $server = shift(@homeservers);
8748: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8749: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8750: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8751: split(/:/,$response);
8752: %{$codes} = (%{$codes},&str2hash($codes_str));
8753: push(@{$codetitles},&str2array($codetitles_str));
8754: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8755: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8756: $ok_response = 1;
8757: }
8758: }
8759: if ($ok_response) {
8760: return 'ok';
8761: } else {
8762: return $response;
8763: }
8764: }
8765:
8766: sub auto_instcode_defaults {
8767: my ($domain,$returnhash,$code_order) = @_;
8768: my @homeservers;
8769:
8770: my %servers = &get_servers($domain,'library');
8771: foreach my $tryserver (keys(%servers)) {
8772: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8773: push(@homeservers,$tryserver);
8774: }
8775: }
8776:
8777: my $response;
8778: foreach my $server (@homeservers) {
8779: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8780: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8781:
8782: foreach my $pair (split(/\&/,$response)) {
8783: my ($name,$value)=split(/\=/,$pair);
8784: if ($name eq 'code_order') {
8785: @{$code_order} = split(/\&/,&unescape($value));
8786: } else {
8787: $returnhash->{&unescape($name)}=&unescape($value);
8788: }
8789: }
8790: return 'ok';
8791: }
8792:
8793: return $response;
8794: }
8795:
8796: sub auto_possible_instcodes {
8797: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8798: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8799: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8800: return;
8801: }
8802: my (@homeservers,$uhome);
8803: if (defined(&domain($domain,'primary'))) {
8804: $uhome=&domain($domain,'primary');
8805: push(@homeservers,&domain($domain,'primary'));
8806: } else {
8807: my %servers = &get_servers($domain,'library');
8808: foreach my $tryserver (keys(%servers)) {
8809: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8810: push(@homeservers,$tryserver);
8811: }
8812: }
8813: }
8814: my $response;
8815: foreach my $server (@homeservers) {
8816: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8817: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8818: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8819: split(':',$response);
8820: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8821: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8822: foreach my $item (split('&',$cat_title)) {
8823: my ($name,$value)=split('=',$item);
8824: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8825: }
8826: foreach my $item (split('&',$cat_order)) {
8827: my ($name,$value)=split('=',$item);
8828: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8829: }
8830: return 'ok';
8831: }
8832: return $response;
8833: }
8834:
8835: sub auto_courserequest_checks {
8836: my ($dom) = @_;
8837: my ($homeserver,%validations);
8838: if ($dom =~ /^$match_domain$/) {
8839: $homeserver = &domain($dom,'primary');
8840: }
8841: unless ($homeserver eq 'no_host') {
8842: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8843: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8844: my @items = split(/&/,$response);
8845: foreach my $item (@items) {
8846: my ($key,$value) = split('=',$item);
8847: $validations{&unescape($key)} = &thaw_unescape($value);
8848: }
8849: }
8850: }
8851: return %validations;
8852: }
8853:
8854: sub auto_courserequest_validation {
8855: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8856: my ($homeserver,$response);
8857: if ($dom =~ /^$match_domain$/) {
8858: $homeserver = &domain($dom,'primary');
8859: }
8860: unless ($homeserver eq 'no_host') {
8861: my $customdata;
8862: if (ref($custominfo) eq 'HASH') {
8863: $customdata = &freeze_escape($custominfo);
8864: }
8865: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8866: ':'.&escape($crstype).':'.&escape($inststatuslist).
8867: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8868: $customdata,$homeserver));
8869: }
8870: return $response;
8871: }
8872:
8873: sub auto_validate_class_sec {
8874: my ($cdom,$cnum,$owners,$inst_class) = @_;
8875: my $homeserver = &homeserver($cnum,$cdom);
8876: my $ownerlist;
8877: if (ref($owners) eq 'ARRAY') {
8878: $ownerlist = join(',',@{$owners});
8879: } else {
8880: $ownerlist = $owners;
8881: }
8882: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8883: &escape($ownerlist).':'.$cdom,$homeserver);
8884: return $response;
8885: }
8886:
8887: sub auto_crsreq_update {
8888: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8889: $code,$accessstart,$accessend,$inbound) = @_;
8890: my ($homeserver,%crsreqresponse);
8891: if ($cdom =~ /^$match_domain$/) {
8892: $homeserver = &domain($cdom,'primary');
8893: }
8894: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8895: my $info;
8896: if (ref($inbound) eq 'HASH') {
8897: $info = &freeze_escape($inbound);
8898: }
8899: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8900: ':'.&escape($action).':'.&escape($ownername).':'.
8901: &escape($ownerdomain).':'.&escape($fullname).':'.
8902: &escape($title).':'.&escape($code).':'.
8903: &escape($accessstart).':'.&escape($accessend).':'.$info,
8904: $homeserver);
8905: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8906: my @items = split(/&/,$response);
8907: foreach my $item (@items) {
8908: my ($key,$value) = split('=',$item);
8909: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8910: }
8911: }
8912: }
8913: return \%crsreqresponse;
8914: }
8915:
8916: sub auto_export_grades {
8917: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8918: my ($homeserver,%exportresponse);
8919: if ($cdom =~ /^$match_domain$/) {
8920: $homeserver = &domain($cdom,'primary');
8921: }
8922: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8923: my $info;
8924: if (ref($inforef) eq 'HASH') {
8925: $info = &freeze_escape($inforef);
8926: }
8927: if (ref($gradesref) eq 'HASH') {
8928: my $grades = &freeze_escape($gradesref);
8929: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
8930: $info.':'.$grades,$homeserver);
8931: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
8932: my @items = split(/&/,$response);
8933: foreach my $item (@items) {
8934: my ($key,$value) = split('=',$item);
8935: $exportresponse{&unescape($key)} = &thaw_unescape($value);
8936: }
8937: }
8938: }
8939: }
8940: return \%exportresponse;
8941: }
8942:
8943: sub check_instcode_cloning {
8944: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8945: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8946: return;
8947: }
8948: my $canclone;
8949: if (@{$code_order} > 0) {
8950: my $instcoderegexp ='^';
8951: my @clonecodes = split(/\&/,$cloner);
8952: foreach my $item (@{$code_order}) {
8953: if (grep(/^\Q$item\E=/,@clonecodes)) {
8954: foreach my $pair (@clonecodes) {
8955: my ($key,$val) = split(/\=/,$pair,2);
8956: $val = &unescape($val);
8957: if ($key eq $item) {
8958: $instcoderegexp .= '('.$val.')';
8959: last;
8960: }
8961: }
8962: } else {
8963: $instcoderegexp .= $codedefaults->{$item};
8964: }
8965: }
8966: $instcoderegexp .= '$';
8967: my (@from,@to);
8968: eval {
8969: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8970: (@to) = ($clonetocode =~ /$instcoderegexp/);
8971: };
8972: if ((@from > 0) && (@to > 0)) {
8973: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8974: if (!@diffs) {
8975: $canclone = 1;
8976: }
8977: }
8978: }
8979: return $canclone;
8980: }
8981:
8982: sub default_instcode_cloning {
8983: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8984: my (%codedefaults,@code_order,$canclone);
8985: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8986: %codedefaults = %{$codedefaultsref};
8987: @code_order = @{$codeorderref};
8988: } elsif ($clonedom) {
8989: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8990: }
8991: if (($domdefclone) && (@code_order)) {
8992: my @clonecodes = split(/\+/,$domdefclone);
8993: my $instcoderegexp ='^';
8994: foreach my $item (@code_order) {
8995: if (grep(/^\Q$item\E$/,@clonecodes)) {
8996: $instcoderegexp .= '('.$codedefaults{$item}.')';
8997: } else {
8998: $instcoderegexp .= $codedefaults{$item};
8999: }
9000: }
9001: $instcoderegexp .= '$';
9002: my (@from,@to);
9003: eval {
9004: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9005: (@to) = ($clonetocode =~ /$instcoderegexp/);
9006: };
9007: if ((@from > 0) && (@to > 0)) {
9008: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9009: if (!@diffs) {
9010: $canclone = 1;
9011: }
9012: }
9013: }
9014: return $canclone;
9015: }
9016:
9017: # ------------------------------------------------------- Course Group routines
9018:
9019: sub get_coursegroups {
9020: my ($cdom,$cnum,$group,$namespace) = @_;
9021: return(&dump($namespace,$cdom,$cnum,$group));
9022: }
9023:
9024: sub modify_coursegroup {
9025: my ($cdom,$cnum,$groupsettings) = @_;
9026: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9027: }
9028:
9029: sub toggle_coursegroup_status {
9030: my ($cdom,$cnum,$group,$action) = @_;
9031: my ($from_namespace,$to_namespace);
9032: if ($action eq 'delete') {
9033: $from_namespace = 'coursegroups';
9034: $to_namespace = 'deleted_groups';
9035: } else {
9036: $from_namespace = 'deleted_groups';
9037: $to_namespace = 'coursegroups';
9038: }
9039: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9040: if (my $tmp = &error(%curr_group)) {
9041: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9042: return ('read error',$tmp);
9043: } else {
9044: my %savedsettings = %curr_group;
9045: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9046: my $deloutcome;
9047: if ($result eq 'ok') {
9048: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9049: } else {
9050: return ('write error',$result);
9051: }
9052: if ($deloutcome eq 'ok') {
9053: return 'ok';
9054: } else {
9055: return ('delete error',$deloutcome);
9056: }
9057: }
9058: }
9059:
9060: sub modify_group_roles {
9061: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9062: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9063: my $role = 'gr/'.&escape($userprivs);
9064: my ($uname,$udom) = split(/:/,$user);
9065: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9066: if ($result eq 'ok') {
9067: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9068: }
9069: return $result;
9070: }
9071:
9072: sub modify_coursegroup_membership {
9073: my ($cdom,$cnum,$membership) = @_;
9074: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9075: return $result;
9076: }
9077:
9078: sub get_active_groups {
9079: my ($udom,$uname,$cdom,$cnum) = @_;
9080: my $now = time;
9081: my %groups = ();
9082: foreach my $key (keys(%env)) {
9083: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9084: my ($start,$end) = split(/\./,$env{$key});
9085: if (($end!=0) && ($end<$now)) { next; }
9086: if (($start!=0) && ($start>$now)) { next; }
9087: if ($1 eq $cdom && $2 eq $cnum) {
9088: $groups{$3} = $env{$key} ;
9089: }
9090: }
9091: }
9092: return %groups;
9093: }
9094:
9095: sub get_group_membership {
9096: my ($cdom,$cnum,$group) = @_;
9097: return(&dump('groupmembership',$cdom,$cnum,$group));
9098: }
9099:
9100: sub get_users_groups {
9101: my ($udom,$uname,$courseid) = @_;
9102: my @usersgroups;
9103: my $cachetime=1800;
9104:
9105: my $hashid="$udom:$uname:$courseid";
9106: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9107: if (defined($cached)) {
9108: @usersgroups = split(/:/,$grouplist);
9109: } else {
9110: $grouplist = '';
9111: my $courseurl = &courseid_to_courseurl($courseid);
9112: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9113: my $access_end = $env{'course.'.$courseid.
9114: '.default_enrollment_end_date'};
9115: my $now = time;
9116: foreach my $key (keys(%roleshash)) {
9117: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9118: my $group = $1;
9119: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9120: my $start = $2;
9121: my $end = $1;
9122: if ($start == -1) { next; } # deleted from group
9123: if (($start!=0) && ($start>$now)) { next; }
9124: if (($end!=0) && ($end<$now)) {
9125: if ($access_end && $access_end < $now) {
9126: if ($access_end - $end < 86400) {
9127: push(@usersgroups,$group);
9128: }
9129: }
9130: next;
9131: }
9132: push(@usersgroups,$group);
9133: }
9134: }
9135: }
9136: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9137: $grouplist = join(':',@usersgroups);
9138: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9139: }
9140: return @usersgroups;
9141: }
9142:
9143: sub devalidate_getgroups_cache {
9144: my ($udom,$uname,$cdom,$cnum)=@_;
9145: my $courseid = $cdom.'_'.$cnum;
9146:
9147: my $hashid="$udom:$uname:$courseid";
9148: &devalidate_cache_new('getgroups',$hashid);
9149: }
9150:
9151: # ------------------------------------------------------------------ Plain Text
9152:
9153: sub plaintext {
9154: my ($short,$type,$cid,$forcedefault) = @_;
9155: if ($short =~ m{^cr/}) {
9156: return (split('/',$short))[-1];
9157: }
9158: if (!defined($cid)) {
9159: $cid = $env{'request.course.id'};
9160: }
9161: my %rolenames = (
9162: Course => 'std',
9163: Community => 'alt1',
9164: Placement => 'std',
9165: );
9166: if ($cid ne '') {
9167: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9168: unless ($forcedefault) {
9169: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9170: &Apache::lonlocal::mt_escape(\$roletext);
9171: return &Apache::lonlocal::mt($roletext);
9172: }
9173: }
9174: }
9175: if ((defined($type)) && (defined($rolenames{$type})) &&
9176: (defined($rolenames{$type})) &&
9177: (defined($prp{$short}{$rolenames{$type}}))) {
9178: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9179: } elsif ($cid ne '') {
9180: my $crstype = $env{'course.'.$cid.'.type'};
9181: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9182: (defined($prp{$short}{$rolenames{$crstype}}))) {
9183: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9184: }
9185: }
9186: return &Apache::lonlocal::mt($prp{$short}{'std'});
9187: }
9188:
9189: # ----------------------------------------------------------------- Assign Role
9190:
9191: sub assignrole {
9192: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9193: $context)=@_;
9194: my $mrole;
9195: if ($role =~ /^cr\//) {
9196: my $cwosec=$url;
9197: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9198: unless (&allowed('ccr',$cwosec)) {
9199: my $refused = 1;
9200: if ($context eq 'requestcourses') {
9201: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9202: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9203: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9204: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9205: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9206: if ($crsenv{'internal.courseowner'} eq
9207: $env{'user.name'}.':'.$env{'user.domain'}) {
9208: $refused = '';
9209: }
9210: }
9211: }
9212: }
9213: }
9214: if ($refused) {
9215: &logthis('Refused custom assignrole: '.
9216: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9217: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9218: return 'refused';
9219: }
9220: }
9221: $mrole='cr';
9222: } elsif ($role =~ /^gr\//) {
9223: my $cwogrp=$url;
9224: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9225: unless (&allowed('mdg',$cwogrp)) {
9226: &logthis('Refused group assignrole: '.
9227: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9228: $env{'user.name'}.' at '.$env{'user.domain'});
9229: return 'refused';
9230: }
9231: $mrole='gr';
9232: } else {
9233: my $cwosec=$url;
9234: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9235: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9236: my $refused;
9237: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9238: if (!(&allowed('c'.$role,$url))) {
9239: $refused = 1;
9240: }
9241: } else {
9242: $refused = 1;
9243: }
9244: if ($refused) {
9245: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9246: if (!$selfenroll && $context eq 'course') {
9247: my %crsenv;
9248: if ($role eq 'cc' || $role eq 'co') {
9249: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9250: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9251: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9252: if ($crsenv{'internal.courseowner'} eq
9253: $env{'user.name'}.':'.$env{'user.domain'}) {
9254: $refused = '';
9255: }
9256: }
9257: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9258: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9259: if ($crsenv{'internal.courseowner'} eq
9260: $env{'user.name'}.':'.$env{'user.domain'}) {
9261: $refused = '';
9262: }
9263: }
9264: }
9265: }
9266: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9267: $refused = '';
9268: } elsif ($context eq 'requestcourses') {
9269: my @possroles = ('st','ta','ep','in','cc','co');
9270: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9271: my $wrongcc;
9272: if ($cnum =~ /^$match_community$/) {
9273: $wrongcc = 1 if ($role eq 'cc');
9274: } else {
9275: $wrongcc = 1 if ($role eq 'co');
9276: }
9277: unless ($wrongcc) {
9278: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9279: if ($crsenv{'internal.courseowner'} eq
9280: $env{'user.name'}.':'.$env{'user.domain'}) {
9281: $refused = '';
9282: }
9283: }
9284: }
9285: } elsif ($context eq 'requestauthor') {
9286: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9287: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9288: if ($env{'environment.requestauthor'} eq 'automatic') {
9289: $refused = '';
9290: } else {
9291: my %domdefaults = &get_domain_defaults($udom);
9292: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9293: my $checkbystatus;
9294: if ($env{'user.adv'}) {
9295: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9296: if ($disposition eq 'automatic') {
9297: $refused = '';
9298: } elsif ($disposition eq '') {
9299: $checkbystatus = 1;
9300: }
9301: } else {
9302: $checkbystatus = 1;
9303: }
9304: if ($checkbystatus) {
9305: if ($env{'environment.inststatus'}) {
9306: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9307: foreach my $type (@inststatuses) {
9308: if (($type ne '') &&
9309: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9310: $refused = '';
9311: }
9312: }
9313: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9314: $refused = '';
9315: }
9316: }
9317: }
9318: }
9319: }
9320: }
9321: if ($refused) {
9322: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9323: ' '.$role.' '.$end.' '.$start.' by '.
9324: $env{'user.name'}.' at '.$env{'user.domain'});
9325: return 'refused';
9326: }
9327: }
9328: } elsif ($role eq 'au') {
9329: if ($url ne '/'.$udom.'/') {
9330: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9331: ' to assign author role for '.$uname.':'.$udom.
9332: ' in domain: '.$url.' refused (wrong domain).');
9333: return 'refused';
9334: }
9335: }
9336: $mrole=$role;
9337: }
9338: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9339: "$udom:$uname:$url".'_'."$mrole=$role";
9340: if ($end) { $command.='_'.$end; }
9341: if ($start) {
9342: if ($end) {
9343: $command.='_'.$start;
9344: } else {
9345: $command.='_0_'.$start;
9346: }
9347: }
9348: my $origstart = $start;
9349: my $origend = $end;
9350: my $delflag;
9351: # actually delete
9352: if ($deleteflag) {
9353: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9354: # modify command to delete the role
9355: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9356: "$udom:$uname:$url".'_'."$mrole";
9357: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9358: # set start and finish to negative values for userrolelog
9359: $start=-1;
9360: $end=-1;
9361: $delflag = 1;
9362: }
9363: }
9364: # send command
9365: my $answer=&reply($command,&homeserver($uname,$udom));
9366: # log new user role if status is ok
9367: if ($answer eq 'ok') {
9368: &userrolelog($role,$uname,$udom,$url,$start,$end);
9369: if (($role eq 'cc') || ($role eq 'in') ||
9370: ($role eq 'ep') || ($role eq 'ad') ||
9371: ($role eq 'ta') || ($role eq 'st') ||
9372: ($role=~/^cr/) || ($role eq 'gr') ||
9373: ($role eq 'co')) {
9374: # for course roles, perform group memberships changes triggered by role change.
9375: unless ($role =~ /^gr/) {
9376: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9377: $origstart,$selfenroll,$context);
9378: }
9379: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9380: $selfenroll,$context);
9381: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9382: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9383: ($role eq 'da')) {
9384: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9385: $context);
9386: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9387: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9388: $context);
9389: }
9390: if ($role eq 'cc') {
9391: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9392: }
9393: }
9394: return $answer;
9395: }
9396:
9397: sub autoupdate_coowners {
9398: my ($url,$end,$start,$uname,$udom) = @_;
9399: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9400: if (($cdom ne '') && ($cnum ne '')) {
9401: my $now = time;
9402: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9403: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9404: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9405: my $instcode = $coursehash{'internal.coursecode'};
9406: if ($instcode ne '') {
9407: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9408: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9409: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9410: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9411: if ($result eq 'valid') {
9412: if ($coursehash{'internal.co-owners'}) {
9413: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9414: push(@newcoowners,$coowner);
9415: }
9416: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9417: push(@newcoowners,$uname.':'.$udom);
9418: }
9419: @newcoowners = sort(@newcoowners);
9420: } else {
9421: push(@newcoowners,$uname.':'.$udom);
9422: }
9423: } else {
9424: if ($coursehash{'internal.co-owners'}) {
9425: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9426: unless ($coowner eq $uname.':'.$udom) {
9427: push(@newcoowners,$coowner);
9428: }
9429: }
9430: unless (@newcoowners > 0) {
9431: $delcoowners = 1;
9432: $coowners = '';
9433: }
9434: }
9435: }
9436: if (@newcoowners || $delcoowners) {
9437: &store_coowners($cdom,$cnum,$coursehash{'home'},
9438: $delcoowners,@newcoowners);
9439: }
9440: }
9441: }
9442: }
9443: }
9444: }
9445: }
9446:
9447: sub store_coowners {
9448: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9449: my $cid = $cdom.'_'.$cnum;
9450: my ($coowners,$delresult,$putresult);
9451: if (@newcoowners) {
9452: $coowners = join(',',@newcoowners);
9453: my %coownershash = (
9454: 'internal.co-owners' => $coowners,
9455: );
9456: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9457: if ($putresult eq 'ok') {
9458: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9459: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9460: }
9461: }
9462: }
9463: if ($delcoowners) {
9464: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9465: if ($delresult eq 'ok') {
9466: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9467: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9468: }
9469: }
9470: }
9471: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9472: my %crsinfo =
9473: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9474: if (ref($crsinfo{$cid}) eq 'HASH') {
9475: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9476: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9477: }
9478: }
9479: }
9480:
9481: # -------------------------------------------------- Modify user authentication
9482: # Overrides without validation
9483:
9484: sub modifyuserauth {
9485: my ($udom,$uname,$umode,$upass)=@_;
9486: my $uhome=&homeserver($uname,$udom);
9487: unless (&allowed('mau',$udom)) { return 'refused'; }
9488: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9489: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9490: ' in domain '.$env{'request.role.domain'});
9491: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9492: &escape($upass),$uhome);
9493: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9494: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9495: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9496: &log($udom,,$uname,$uhome,
9497: 'Authentication changed by '.$env{'user.domain'}.', '.
9498: $env{'user.name'}.', '.$umode.
9499: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9500: unless ($reply eq 'ok') {
9501: &logthis('Authentication mode error: '.$reply);
9502: return 'error: '.$reply;
9503: }
9504: return 'ok';
9505: }
9506:
9507: # --------------------------------------------------------------- Modify a user
9508:
9509: sub modifyuser {
9510: my ($udom, $uname, $uid,
9511: $umode, $upass, $first,
9512: $middle, $last, $gene,
9513: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9514: $udom= &LONCAPA::clean_domain($udom);
9515: $uname=&LONCAPA::clean_username($uname);
9516: my $showcandelete = 'none';
9517: if (ref($candelete) eq 'ARRAY') {
9518: if (@{$candelete} > 0) {
9519: $showcandelete = join(', ',@{$candelete});
9520: }
9521: }
9522: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9523: $umode.', '.$first.', '.$middle.', '.
9524: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9525: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9526: ' desiredhome not specified').
9527: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9528: ' in domain '.$env{'request.role.domain'});
9529: my $uhome=&homeserver($uname,$udom,'true');
9530: my $newuser;
9531: if ($uhome eq 'no_host') {
9532: $newuser = 1;
9533: }
9534: # ----------------------------------------------------------------- Create User
9535: if (($uhome eq 'no_host') &&
9536: (($umode && $upass) || ($umode eq 'localauth'))) {
9537: my $unhome='';
9538: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9539: $unhome = $desiredhome;
9540: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9541: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9542: } else { # load balancing routine for determining $unhome
9543: my $loadm=10000000;
9544: my %servers = &get_servers($udom,'library');
9545: foreach my $tryserver (keys(%servers)) {
9546: my $answer=reply('load',$tryserver);
9547: if (($answer=~/\d+/) && ($answer<$loadm)) {
9548: $loadm=$answer;
9549: $unhome=$tryserver;
9550: }
9551: }
9552: }
9553: if (($unhome eq '') || ($unhome eq 'no_host')) {
9554: return 'error: unable to find a home server for '.$uname.
9555: ' in domain '.$udom;
9556: }
9557: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9558: &escape($upass),$unhome);
9559: unless ($reply eq 'ok') {
9560: return 'error: '.$reply;
9561: }
9562: $uhome=&homeserver($uname,$udom,'true');
9563: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9564: return 'error: unable verify users home machine.';
9565: }
9566: } # End of creation of new user
9567: # ---------------------------------------------------------------------- Add ID
9568: if ($uid) {
9569: $uid=~tr/A-Z/a-z/;
9570: my %uidhash=&idrget($udom,$uname);
9571: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9572: && (!$forceid)) {
9573: unless ($uid eq $uidhash{$uname}) {
9574: return 'error: user id "'.$uid.'" does not match '.
9575: 'current user id "'.$uidhash{$uname}.'".';
9576: }
9577: } else {
9578: &idput($udom,{$uname => $uid},$uhome,'ids');
9579: }
9580: }
9581: # -------------------------------------------------------------- Add names, etc
9582: my @tmp=&get('environment',
9583: ['firstname','middlename','lastname','generation','id',
9584: 'permanentemail','inststatus'],
9585: $udom,$uname);
9586: my (%names,%oldnames);
9587: if ($tmp[0] =~ m/^error:.*/) {
9588: %names=();
9589: } else {
9590: %names = @tmp;
9591: %oldnames = %names;
9592: }
9593: #
9594: # If name, email and/or uid are blank (e.g., because an uploaded file
9595: # of users did not contain them), do not overwrite existing values
9596: # unless field is in $candelete array ref.
9597: #
9598:
9599: my @fields = ('firstname','middlename','lastname','generation',
9600: 'permanentemail','id');
9601: my %newvalues;
9602: if (ref($candelete) eq 'ARRAY') {
9603: foreach my $field (@fields) {
9604: if (grep(/^\Q$field\E$/,@{$candelete})) {
9605: if ($field eq 'firstname') {
9606: $names{$field} = $first;
9607: } elsif ($field eq 'middlename') {
9608: $names{$field} = $middle;
9609: } elsif ($field eq 'lastname') {
9610: $names{$field} = $last;
9611: } elsif ($field eq 'generation') {
9612: $names{$field} = $gene;
9613: } elsif ($field eq 'permanentemail') {
9614: $names{$field} = $email;
9615: } elsif ($field eq 'id') {
9616: $names{$field} = $uid;
9617: }
9618: }
9619: }
9620: }
9621: if ($first) { $names{'firstname'} = $first; }
9622: if (defined($middle)) { $names{'middlename'} = $middle; }
9623: if ($last) { $names{'lastname'} = $last; }
9624: if (defined($gene)) { $names{'generation'} = $gene; }
9625: if ($email) {
9626: $email=~s/[^\w\@\.\-\,]//gs;
9627: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9628: }
9629: if ($uid) { $names{'id'} = $uid; }
9630: if (defined($inststatus)) {
9631: $names{'inststatus'} = '';
9632: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9633: if (ref($usertypes) eq 'HASH') {
9634: my @okstatuses;
9635: foreach my $item (split(/:/,$inststatus)) {
9636: if (defined($usertypes->{$item})) {
9637: push(@okstatuses,$item);
9638: }
9639: }
9640: if (@okstatuses) {
9641: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9642: }
9643: }
9644: }
9645: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9646: $umode.', '.$first.', '.$middle.', '.
9647: $last.', '.$gene.', '.$email.', '.$inststatus;
9648: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9649: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9650: } else {
9651: $logmsg .= ' during self creation';
9652: }
9653: my $changed;
9654: if ($newuser) {
9655: $changed = 1;
9656: } else {
9657: foreach my $field (@fields) {
9658: if ($names{$field} ne $oldnames{$field}) {
9659: $changed = 1;
9660: last;
9661: }
9662: }
9663: }
9664: unless ($changed) {
9665: $logmsg = 'No changes in user information needed for: '.$logmsg;
9666: &logthis($logmsg);
9667: return 'ok';
9668: }
9669: my $reply = &put('environment', \%names, $udom,$uname);
9670: if ($reply ne 'ok') {
9671: return 'error: '.$reply;
9672: }
9673: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9674: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9675: }
9676: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9677: &devalidate_cache_new('namescache',$uname.':'.$udom);
9678: $logmsg = 'Success modifying user '.$logmsg;
9679: &logthis($logmsg);
9680: return 'ok';
9681: }
9682:
9683: # -------------------------------------------------------------- Modify student
9684:
9685: sub modifystudent {
9686: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9687: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9688: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9689: if (!$cid) {
9690: unless ($cid=$env{'request.course.id'}) {
9691: return 'not_in_class';
9692: }
9693: }
9694: # --------------------------------------------------------------- Make the user
9695: my $reply=&modifyuser
9696: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9697: $desiredhome,$email,$inststatus);
9698: unless ($reply eq 'ok') { return $reply; }
9699: # This will cause &modify_student_enrollment to get the uid from the
9700: # student's environment
9701: $uid = undef if (!$forceid);
9702: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9703: $gene,$usec,$end,$start,$type,$locktype,
9704: $cid,$selfenroll,$context,$credits,$instsec);
9705: return $reply;
9706: }
9707:
9708: sub modify_student_enrollment {
9709: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9710: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9711: my ($cdom,$cnum,$chome);
9712: if (!$cid) {
9713: unless ($cid=$env{'request.course.id'}) {
9714: return 'not_in_class';
9715: }
9716: $cdom=$env{'course.'.$cid.'.domain'};
9717: $cnum=$env{'course.'.$cid.'.num'};
9718: } else {
9719: ($cdom,$cnum)=split(/_/,$cid);
9720: }
9721: $chome=$env{'course.'.$cid.'.home'};
9722: if (!$chome) {
9723: $chome=&homeserver($cnum,$cdom);
9724: }
9725: if (!$chome) { return 'unknown_course'; }
9726: # Make sure the user exists
9727: my $uhome=&homeserver($uname,$udom);
9728: if (($uhome eq '') || ($uhome eq 'no_host')) {
9729: return 'error: no such user';
9730: }
9731: # Get student data if we were not given enough information
9732: if (!defined($first) || $first eq '' ||
9733: !defined($last) || $last eq '' ||
9734: !defined($uid) || $uid eq '' ||
9735: !defined($middle) || $middle eq '' ||
9736: !defined($gene) || $gene eq '') {
9737: # They did not supply us with enough data to enroll the student, so
9738: # we need to pick up more information.
9739: my %tmp = &get('environment',
9740: ['firstname','middlename','lastname', 'generation','id']
9741: ,$udom,$uname);
9742:
9743: #foreach my $key (keys(%tmp)) {
9744: # &logthis("key $key = ".$tmp{$key});
9745: #}
9746: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9747: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9748: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9749: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9750: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9751: }
9752: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9753: my $user = "$uname:$udom";
9754: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9755: my $reply=cput('classlist',
9756: {$user =>
9757: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9758: $cdom,$cnum);
9759: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9760: &devalidate_getsection_cache($udom,$uname,$cid);
9761: } else {
9762: return 'error: '.$reply;
9763: }
9764: # Add student role to user
9765: my $uurl='/'.$cid;
9766: $uurl=~s/\_/\//g;
9767: if ($usec) {
9768: $uurl.='/'.$usec;
9769: }
9770: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9771: $selfenroll,$context);
9772: if ($result ne 'ok') {
9773: if ($old_entry{$user} ne '') {
9774: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9775: } else {
9776: $reply = &del('classlist',[$user],$cdom,$cnum);
9777: }
9778: }
9779: return $result;
9780: }
9781:
9782: sub format_name {
9783: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9784: my $name;
9785: if ($first ne 'lastname') {
9786: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9787: } else {
9788: if ($lastname=~/\S/) {
9789: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9790: $name=~s/\s+,/,/;
9791: } else {
9792: $name.= $firstname.' '.$middlename.' '.$generation;
9793: }
9794: }
9795: $name=~s/^\s+//;
9796: $name=~s/\s+$//;
9797: $name=~s/\s+/ /g;
9798: return $name;
9799: }
9800:
9801: # ------------------------------------------------- Write to course preferences
9802:
9803: sub writecoursepref {
9804: my ($courseid,%prefs)=@_;
9805: $courseid=~s/^\///;
9806: $courseid=~s/\_/\//g;
9807: my ($cdomain,$cnum)=split(/\//,$courseid);
9808: my $chome=homeserver($cnum,$cdomain);
9809: if (($chome eq '') || ($chome eq 'no_host')) {
9810: return 'error: no such course';
9811: }
9812: my $cstring='';
9813: foreach my $pref (keys(%prefs)) {
9814: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9815: }
9816: $cstring=~s/\&$//;
9817: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9818: }
9819:
9820: # ---------------------------------------------------------- Make/modify course
9821:
9822: sub createcourse {
9823: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9824: $course_owner,$crstype,$cnum,$context,$category)=@_;
9825: $url=&declutter($url);
9826: my $cid='';
9827: if ($context eq 'requestcourses') {
9828: my $can_create = 0;
9829: my ($ownername,$ownerdom) = split(':',$course_owner);
9830: if ($udom eq $ownerdom) {
9831: if (&usertools_access($ownername,$ownerdom,$category,undef,
9832: $context)) {
9833: $can_create = 1;
9834: }
9835: } else {
9836: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9837: $category);
9838: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9839: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9840: if (@curr > 0) {
9841: my @options = qw(approval validate autolimit);
9842: my $optregex = join('|',@options);
9843: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9844: $can_create = 1;
9845: }
9846: }
9847: }
9848: }
9849: if ($can_create) {
9850: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9851: unless (&allowed('ccc',$udom)) {
9852: return 'refused';
9853: }
9854: }
9855: } else {
9856: return 'refused';
9857: }
9858: } elsif (!&allowed('ccc',$udom)) {
9859: return 'refused';
9860: }
9861: # --------------------------------------------------------------- Get Unique ID
9862: my $uname;
9863: if ($cnum =~ /^$match_courseid$/) {
9864: my $chome=&homeserver($cnum,$udom,'true');
9865: if (($chome eq '') || ($chome eq 'no_host')) {
9866: $uname = $cnum;
9867: } else {
9868: $uname = &generate_coursenum($udom,$crstype);
9869: }
9870: } else {
9871: $uname = &generate_coursenum($udom,$crstype);
9872: }
9873: return $uname if ($uname =~ /^error/);
9874: # -------------------------------------------------- Check supplied server name
9875: if (!defined($course_server)) {
9876: if (defined(&domain($udom,'primary'))) {
9877: $course_server = &domain($udom,'primary');
9878: } else {
9879: $course_server = $env{'user.home'};
9880: }
9881: }
9882: my %host_servers =
9883: &Apache::lonnet::get_servers($udom,'library');
9884: unless ($host_servers{$course_server}) {
9885: return 'error: invalid home server for course: '.$course_server;
9886: }
9887: # ------------------------------------------------------------- Make the course
9888: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9889: $course_server);
9890: unless ($reply eq 'ok') { return 'error: '.$reply; }
9891: my $uhome=&homeserver($uname,$udom,'true');
9892: if (($uhome eq '') || ($uhome eq 'no_host')) {
9893: return 'error: no such course';
9894: }
9895: # ----------------------------------------------------------------- Course made
9896: # log existence
9897: my $now = time;
9898: my $newcourse = {
9899: $udom.'_'.$uname => {
9900: description => $description,
9901: inst_code => $inst_code,
9902: owner => $course_owner,
9903: type => $crstype,
9904: creator => $env{'user.name'}.':'.
9905: $env{'user.domain'},
9906: created => $now,
9907: context => $context,
9908: },
9909: };
9910: &courseidput($udom,$newcourse,$uhome,'notime');
9911: # set toplevel url
9912: my $topurl=$url;
9913: unless ($nonstandard) {
9914: # ------------------------------------------ For standard courses, make top url
9915: my $mapurl=&clutter($url);
9916: if ($mapurl eq '/res/') { $mapurl=''; }
9917: $env{'form.initmap'}=(<<ENDINITMAP);
9918: <map>
9919: <resource id="1" type="start"></resource>
9920: <resource id="2" src="$mapurl"></resource>
9921: <resource id="3" type="finish"></resource>
9922: <link index="1" from="1" to="2"></link>
9923: <link index="2" from="2" to="3"></link>
9924: </map>
9925: ENDINITMAP
9926: $topurl=&declutter(
9927: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9928: );
9929: }
9930: # ----------------------------------------------------------- Write preferences
9931: &writecoursepref($udom.'_'.$uname,
9932: ('description' => $description,
9933: 'url' => $topurl,
9934: 'internal.creator' => $env{'user.name'}.':'.
9935: $env{'user.domain'},
9936: 'internal.created' => $now,
9937: 'internal.creationcontext' => $context)
9938: );
9939: return '/'.$udom.'/'.$uname;
9940: }
9941:
9942: # ------------------------------------------------------------------- Create ID
9943: sub generate_coursenum {
9944: my ($udom,$crstype) = @_;
9945: my $domdesc = &domain($udom);
9946: return 'error: invalid domain' if ($domdesc eq '');
9947: my $first;
9948: if ($crstype eq 'Community') {
9949: $first = '0';
9950: } else {
9951: $first = int(1+rand(9));
9952: }
9953: my $uname=$first.
9954: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9955: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9956: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9957: # ----------------------------------------------- Make sure that does not exist
9958: my $uhome=&homeserver($uname,$udom,'true');
9959: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9960: if ($crstype eq 'Community') {
9961: $first = '0';
9962: } else {
9963: $first = int(1+rand(9));
9964: }
9965: $uname=$first.
9966: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9967: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9968: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9969: $uhome=&homeserver($uname,$udom,'true');
9970: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9971: return 'error: unable to generate unique course-ID';
9972: }
9973: }
9974: return $uname;
9975: }
9976:
9977: sub is_course {
9978: my ($cdom, $cnum) = scalar(@_) == 1 ?
9979: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9980:
9981: return unless $cdom and $cnum;
9982:
9983: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9984: '.');
9985:
9986: return unless(exists($courses{$cdom.'_'.$cnum}));
9987: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9988: }
9989:
9990: sub store_userdata {
9991: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9992: my $result;
9993: if ($datakey ne '') {
9994: if (ref($storehash) eq 'HASH') {
9995: if ($udom eq '' || $uname eq '') {
9996: $udom = $env{'user.domain'};
9997: $uname = $env{'user.name'};
9998: }
9999: my $uhome=&homeserver($uname,$udom);
10000: if (($uhome eq '') || ($uhome eq 'no_host')) {
10001: $result = 'error: no_host';
10002: } else {
10003: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10004: $storehash->{'host'} = $perlvar{'lonHostID'};
10005:
10006: my $namevalue='';
10007: foreach my $key (keys(%{$storehash})) {
10008: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10009: }
10010: $namevalue=~s/\&$//;
10011: unless ($namespace eq 'courserequests') {
10012: $datakey = &escape($datakey);
10013: }
10014: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10015: $namevalue,$uhome);
10016: }
10017: } else {
10018: $result = 'error: data to store was not a hash reference';
10019: }
10020: } else {
10021: $result= 'error: invalid requestkey';
10022: }
10023: return $result;
10024: }
10025:
10026: # ---------------------------------------------------------- Assign Custom Role
10027:
10028: sub assigncustomrole {
10029: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10030: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10031: $end,$start,$deleteflag,$selfenroll,$context);
10032: }
10033:
10034: # ----------------------------------------------------------------- Revoke Role
10035:
10036: sub revokerole {
10037: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10038: my $now=time;
10039: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10040: }
10041:
10042: # ---------------------------------------------------------- Revoke Custom Role
10043:
10044: sub revokecustomrole {
10045: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10046: my $now=time;
10047: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10048: $deleteflag,$selfenroll,$context);
10049: }
10050:
10051: # ------------------------------------------------------------ Disk usage
10052: sub diskusage {
10053: my ($udom,$uname,$directorypath,$getpropath)=@_;
10054: $directorypath =~ s/\/$//;
10055: my $listing=&reply('du2:'.&escape($directorypath).':'
10056: .&escape($getpropath).':'.&escape($uname).':'
10057: .&escape($udom),homeserver($uname,$udom));
10058: if ($listing eq 'unknown_cmd') {
10059: if ($getpropath) {
10060: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10061: }
10062: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10063: }
10064: return $listing;
10065: }
10066:
10067: sub is_locked {
10068: my ($file_name, $domain, $user, $which) = @_;
10069: my @check;
10070: my $is_locked;
10071: push (@check,$file_name);
10072: my %locked = &get('file_permissions',\@check,
10073: $env{'user.domain'},$env{'user.name'});
10074: my ($tmp)=keys(%locked);
10075: if ($tmp=~/^error:/) { undef(%locked); }
10076:
10077: if (ref($locked{$file_name}) eq 'ARRAY') {
10078: $is_locked = 'false';
10079: foreach my $entry (@{$locked{$file_name}}) {
10080: if (ref($entry) eq 'ARRAY') {
10081: $is_locked = 'true';
10082: if (ref($which) eq 'ARRAY') {
10083: push(@{$which},$entry);
10084: } else {
10085: last;
10086: }
10087: }
10088: }
10089: } else {
10090: $is_locked = 'false';
10091: }
10092: return $is_locked;
10093: }
10094:
10095: sub declutter_portfile {
10096: my ($file) = @_;
10097: $file =~ s{^(/portfolio/|portfolio/)}{/};
10098: return $file;
10099: }
10100:
10101: # ------------------------------------------------------------- Mark as Read Only
10102:
10103: sub mark_as_readonly {
10104: my ($domain,$user,$files,$what) = @_;
10105: my %current_permissions = &dump('file_permissions',$domain,$user);
10106: my ($tmp)=keys(%current_permissions);
10107: if ($tmp=~/^error:/) { undef(%current_permissions); }
10108: foreach my $file (@{$files}) {
10109: $file = &declutter_portfile($file);
10110: push(@{$current_permissions{$file}},$what);
10111: }
10112: &put('file_permissions',\%current_permissions,$domain,$user);
10113: return;
10114: }
10115:
10116: # ------------------------------------------------------------Save Selected Files
10117:
10118: sub save_selected_files {
10119: my ($user, $path, @files) = @_;
10120: my $filename = $user."savedfiles";
10121: my @other_files = &files_not_in_path($user, $path);
10122: open (OUT, '>'.$tmpdir.$filename);
10123: foreach my $file (@files) {
10124: print (OUT $env{'form.currentpath'}.$file."\n");
10125: }
10126: foreach my $file (@other_files) {
10127: print (OUT $file."\n");
10128: }
10129: close (OUT);
10130: return 'ok';
10131: }
10132:
10133: sub clear_selected_files {
10134: my ($user) = @_;
10135: my $filename = $user."savedfiles";
10136: open (OUT, '>'.LONCAPA::tempdir().$filename);
10137: print (OUT undef);
10138: close (OUT);
10139: return ("ok");
10140: }
10141:
10142: sub files_in_path {
10143: my ($user, $path) = @_;
10144: my $filename = $user."savedfiles";
10145: my %return_files;
10146: open (IN, '<'.LONCAPA::tempdir().$filename);
10147: while (my $line_in = <IN>) {
10148: chomp ($line_in);
10149: my @paths_and_file = split (m!/!, $line_in);
10150: my $file_part = pop (@paths_and_file);
10151: my $path_part = join ('/', @paths_and_file);
10152: $path_part.='/';
10153: my $path_and_file = $path_part.$file_part;
10154: if ($path_part eq $path) {
10155: $return_files{$file_part}= 'selected';
10156: }
10157: }
10158: close (IN);
10159: return (\%return_files);
10160: }
10161:
10162: # called in portfolio select mode, to show files selected NOT in current directory
10163: sub files_not_in_path {
10164: my ($user, $path) = @_;
10165: my $filename = $user."savedfiles";
10166: my @return_files;
10167: my $path_part;
10168: open(IN, '<'.LONCAPA::tempdir().$filename);
10169: while (my $line = <IN>) {
10170: #ok, I know it's clunky, but I want it to work
10171: my @paths_and_file = split(m|/|, $line);
10172: my $file_part = pop(@paths_and_file);
10173: chomp($file_part);
10174: my $path_part = join('/', @paths_and_file);
10175: $path_part .= '/';
10176: my $path_and_file = $path_part.$file_part;
10177: if ($path_part ne $path) {
10178: push(@return_files, ($path_and_file));
10179: }
10180: }
10181: close(OUT);
10182: return (@return_files);
10183: }
10184:
10185: #------------------------------Submitted/Handedback Portfolio Files Versioning
10186:
10187: sub portfiles_versioning {
10188: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10189: my $portfolio_root = '/userfiles/portfolio';
10190: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10191: foreach my $file (@{$portfiles}) {
10192: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10193: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10194: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10195: my $getpropath = 1;
10196: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10197: $stu_name,$getpropath);
10198: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10199: my $new_answer =
10200: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10201: if ($new_answer ne 'problem getting file') {
10202: push(@{$versioned_portfiles}, $directory.$new_answer);
10203: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10204: [$symb,$env{'request.course.id'},'graded']);
10205: }
10206: }
10207: }
10208:
10209: sub get_next_version {
10210: my ($answer_name, $answer_ext, $dir_list) = @_;
10211: my $version;
10212: if (ref($dir_list) eq 'ARRAY') {
10213: foreach my $row (@{$dir_list}) {
10214: my ($file) = split(/\&/,$row,2);
10215: my ($file_name,$file_version,$file_ext) =
10216: &file_name_version_ext($file);
10217: if (($file_name eq $answer_name) &&
10218: ($file_ext eq $answer_ext)) {
10219: # gets here if filename and extension match,
10220: # regardless of version
10221: if ($file_version ne '') {
10222: # a versioned file is found so save it for later
10223: if ($file_version > $version) {
10224: $version = $file_version;
10225: }
10226: }
10227: }
10228: }
10229: }
10230: $version ++;
10231: return($version);
10232: }
10233:
10234: sub version_selected_portfile {
10235: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10236: my ($answer_name,$answer_ver,$answer_ext) =
10237: &file_name_version_ext($file_name);
10238: my $new_answer;
10239: $env{'form.copy'} =
10240: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10241: if($env{'form.copy'} eq '-1') {
10242: $new_answer = 'problem getting file';
10243: } else {
10244: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10245: my $copy_result =
10246: &finishuserfileupload($stu_name,$domain,'copy',
10247: '/portfolio'.$directory.$new_answer);
10248: }
10249: undef($env{'form.copy'});
10250: return ($new_answer);
10251: }
10252:
10253: sub file_name_version_ext {
10254: my ($file)=@_;
10255: my @file_parts = split(/\./, $file);
10256: my ($name,$version,$ext);
10257: if (@file_parts > 1) {
10258: $ext=pop(@file_parts);
10259: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10260: $version=pop(@file_parts);
10261: }
10262: $name=join('.',@file_parts);
10263: } else {
10264: $name=join('.',@file_parts);
10265: }
10266: return($name,$version,$ext);
10267: }
10268:
10269: #----------------------------------------------Get portfolio file permissions
10270:
10271: sub get_portfile_permissions {
10272: my ($domain,$user) = @_;
10273: my %current_permissions = &dump('file_permissions',$domain,$user);
10274: my ($tmp)=keys(%current_permissions);
10275: if ($tmp=~/^error:/) { undef(%current_permissions); }
10276: return \%current_permissions;
10277: }
10278:
10279: #---------------------------------------------Get portfolio file access controls
10280:
10281: sub get_access_controls {
10282: my ($current_permissions,$group,$file) = @_;
10283: my %access;
10284: my $real_file = $file;
10285: $file =~ s/\.meta$//;
10286: if (defined($file)) {
10287: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10288: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10289: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10290: }
10291: }
10292: } else {
10293: foreach my $key (keys(%{$current_permissions})) {
10294: if ($key =~ /\0accesscontrol$/) {
10295: if (defined($group)) {
10296: if ($key !~ m-^\Q$group\E/-) {
10297: next;
10298: }
10299: }
10300: my ($fullpath) = split(/\0/,$key);
10301: if (ref($$current_permissions{$key}) eq 'HASH') {
10302: foreach my $control (keys(%{$$current_permissions{$key}})) {
10303: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10304: }
10305: }
10306: }
10307: }
10308: }
10309: return %access;
10310: }
10311:
10312: sub modify_access_controls {
10313: my ($file_name,$changes,$domain,$user)=@_;
10314: my ($outcome,$deloutcome);
10315: my %store_permissions;
10316: my %new_values;
10317: my %new_control;
10318: my %translation;
10319: my @deletions = ();
10320: my $now = time;
10321: if (exists($$changes{'activate'})) {
10322: if (ref($$changes{'activate'}) eq 'HASH') {
10323: my @newitems = sort(keys(%{$$changes{'activate'}}));
10324: my $numnew = scalar(@newitems);
10325: for (my $i=0; $i<$numnew; $i++) {
10326: my $newkey = $newitems[$i];
10327: my $newid = &Apache::loncommon::get_cgi_id();
10328: if ($newkey =~ /^\d+:/) {
10329: $newkey =~ s/^(\d+)/$newid/;
10330: $translation{$1} = $newid;
10331: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10332: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10333: $translation{$1} = $newid;
10334: }
10335: $new_values{$file_name."\0".$newkey} =
10336: $$changes{'activate'}{$newitems[$i]};
10337: $new_control{$newkey} = $now;
10338: }
10339: }
10340: }
10341: my %todelete;
10342: my %changed_items;
10343: foreach my $action ('delete','update') {
10344: if (exists($$changes{$action})) {
10345: if (ref($$changes{$action}) eq 'HASH') {
10346: foreach my $key (keys(%{$$changes{$action}})) {
10347: my ($itemnum) = ($key =~ /^([^:]+):/);
10348: if ($action eq 'delete') {
10349: $todelete{$itemnum} = 1;
10350: } else {
10351: $changed_items{$itemnum} = $key;
10352: }
10353: }
10354: }
10355: }
10356: }
10357: # get lock on access controls for file.
10358: my $lockhash = {
10359: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10360: ':'.$env{'user.domain'},
10361: };
10362: my $tries = 0;
10363: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10364:
10365: while (($gotlock ne 'ok') && $tries < 10) {
10366: $tries ++;
10367: sleep(0.1);
10368: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10369: }
10370: if ($gotlock eq 'ok') {
10371: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10372: my ($tmp)=keys(%curr_permissions);
10373: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10374: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10375: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10376: if (ref($curr_controls) eq 'HASH') {
10377: foreach my $control_item (keys(%{$curr_controls})) {
10378: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10379: if (defined($todelete{$itemnum})) {
10380: push(@deletions,$file_name."\0".$control_item);
10381: } else {
10382: if (defined($changed_items{$itemnum})) {
10383: $new_control{$changed_items{$itemnum}} = $now;
10384: push(@deletions,$file_name."\0".$control_item);
10385: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10386: } else {
10387: $new_control{$control_item} = $$curr_controls{$control_item};
10388: }
10389: }
10390: }
10391: }
10392: }
10393: my ($group);
10394: if (&is_course($domain,$user)) {
10395: ($group,my $file) = split(/\//,$file_name,2);
10396: }
10397: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10398: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10399: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10400: # remove lock
10401: my @del_lock = ($file_name."\0".'locked_access_records');
10402: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10403: my $sqlresult =
10404: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10405: $group);
10406: } else {
10407: $outcome = "error: could not obtain lockfile\n";
10408: }
10409: return ($outcome,$deloutcome,\%new_values,\%translation);
10410: }
10411:
10412: sub make_public_indefinitely {
10413: my (@requrl) = @_;
10414: return &automated_portfile_access('public',\@requrl);
10415: }
10416:
10417: sub automated_portfile_access {
10418: my ($accesstype,$addsref,$delsref,$info) = @_;
10419: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10420: return 'invalid';
10421: }
10422: my %urls;
10423: if (ref($addsref) eq 'ARRAY') {
10424: foreach my $requrl (@{$addsref}) {
10425: if (&is_portfolio_url($requrl)) {
10426: unless (exists($urls{$requrl})) {
10427: $urls{$requrl} = 'add';
10428: }
10429: }
10430: }
10431: }
10432: if (ref($delsref) eq 'ARRAY') {
10433: foreach my $requrl (@{$delsref}) {
10434: if (&is_portfolio_url($requrl)) {
10435: unless (exists($urls{$requrl})) {
10436: $urls{$requrl} = 'delete';
10437: }
10438: }
10439: }
10440: }
10441: unless (keys(%urls)) {
10442: return 'invalid';
10443: }
10444: my $ip;
10445: if ($accesstype eq 'ip') {
10446: if (ref($info) eq 'HASH') {
10447: if ($info->{'ip'} ne '') {
10448: $ip = $info->{'ip'};
10449: }
10450: }
10451: if ($ip eq '') {
10452: return 'invalid';
10453: }
10454: }
10455: my $errors;
10456: my $now = time;
10457: my %current_perms;
10458: foreach my $requrl (sort(keys(%urls))) {
10459: my $action;
10460: if ($urls{$requrl} eq 'add') {
10461: $action = 'activate';
10462: } else {
10463: $action = 'none';
10464: }
10465: my $aclnum = 0;
10466: my (undef,$udom,$unum,$file_name,$group) =
10467: &parse_portfolio_url($requrl);
10468: unless (exists($current_perms{$unum.':'.$udom})) {
10469: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10470: }
10471: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10472: $group,$file_name);
10473: foreach my $key (keys(%{$access_controls{$file_name}})) {
10474: my ($num,$scope,$end,$start) =
10475: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10476: if ($scope eq $accesstype) {
10477: if (($start <= $now) && ($end == 0)) {
10478: if ($accesstype eq 'ip') {
10479: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10480: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10481: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10482: if ($urls{$requrl} eq 'add') {
10483: $action = 'none';
10484: last;
10485: } else {
10486: $action = 'delete';
10487: $aclnum = $num;
10488: last;
10489: }
10490: }
10491: }
10492: }
10493: } elsif ($accesstype eq 'public') {
10494: if ($urls{$requrl} eq 'add') {
10495: $action = 'none';
10496: last;
10497: } else {
10498: $action = 'delete';
10499: $aclnum = $num;
10500: last;
10501: }
10502: }
10503: } elsif ($accesstype eq 'public') {
10504: $action = 'update';
10505: $aclnum = $num;
10506: last;
10507: }
10508: }
10509: }
10510: if ($action eq 'none') {
10511: next;
10512: } else {
10513: my %changes;
10514: my $newend = 0;
10515: my $newstart = $now;
10516: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10517: $changes{$action}{$newkey} = {
10518: type => $accesstype,
10519: time => {
10520: start => $newstart,
10521: end => $newend,
10522: },
10523: };
10524: if ($accesstype eq 'ip') {
10525: $changes{$action}{$newkey}{'ip'} = [$ip];
10526: }
10527: my ($outcome,$deloutcome,$new_values,$translation) =
10528: &modify_access_controls($file_name,\%changes,$udom,$unum);
10529: unless ($outcome eq 'ok') {
10530: $errors .= $outcome.' ';
10531: }
10532: }
10533: }
10534: if ($errors) {
10535: $errors =~ s/\s$//;
10536: return $errors;
10537: } else {
10538: return 'ok';
10539: }
10540: }
10541:
10542: #------------------------------------------------------Get Marked as Read Only
10543:
10544: sub get_marked_as_readonly {
10545: my ($domain,$user,$what,$group) = @_;
10546: my $current_permissions = &get_portfile_permissions($domain,$user);
10547: my @readonly_files;
10548: my $cmp1=$what;
10549: if (ref($what)) { $cmp1=join('',@{$what}) };
10550: while (my ($file_name,$value) = each(%{$current_permissions})) {
10551: if (defined($group)) {
10552: if ($file_name !~ m-^\Q$group\E/-) {
10553: next;
10554: }
10555: }
10556: if (ref($value) eq "ARRAY"){
10557: foreach my $stored_what (@{$value}) {
10558: my $cmp2=$stored_what;
10559: if (ref($stored_what) eq 'ARRAY') {
10560: $cmp2=join('',@{$stored_what});
10561: }
10562: if ($cmp1 eq $cmp2) {
10563: push(@readonly_files, $file_name);
10564: last;
10565: } elsif (!defined($what)) {
10566: push(@readonly_files, $file_name);
10567: last;
10568: }
10569: }
10570: }
10571: }
10572: return @readonly_files;
10573: }
10574: #-----------------------------------------------------------Get Marked as Read Only Hash
10575:
10576: sub get_marked_as_readonly_hash {
10577: my ($current_permissions,$group,$what) = @_;
10578: my %readonly_files;
10579: while (my ($file_name,$value) = each(%{$current_permissions})) {
10580: if (defined($group)) {
10581: if ($file_name !~ m-^\Q$group\E/-) {
10582: next;
10583: }
10584: }
10585: if (ref($value) eq "ARRAY"){
10586: foreach my $stored_what (@{$value}) {
10587: if (ref($stored_what) eq 'ARRAY') {
10588: foreach my $lock_descriptor(@{$stored_what}) {
10589: if ($lock_descriptor eq 'graded') {
10590: $readonly_files{$file_name} = 'graded';
10591: } elsif ($lock_descriptor eq 'handback') {
10592: $readonly_files{$file_name} = 'handback';
10593: } else {
10594: if (!exists($readonly_files{$file_name})) {
10595: $readonly_files{$file_name} = 'locked';
10596: }
10597: }
10598: }
10599: }
10600: }
10601: }
10602: }
10603: return %readonly_files;
10604: }
10605: # ------------------------------------------------------------ Unmark as Read Only
10606:
10607: sub unmark_as_readonly {
10608: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10609: # for portfolio submissions, $what contains [$symb,$crsid]
10610: my ($domain,$user,$what,$file_name,$group) = @_;
10611: $file_name = &declutter_portfile($file_name);
10612: my $symb_crs = $what;
10613: if (ref($what)) { $symb_crs=join('',@$what); }
10614: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10615: my ($tmp)=keys(%current_permissions);
10616: if ($tmp=~/^error:/) { undef(%current_permissions); }
10617: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10618: foreach my $file (@readonly_files) {
10619: my $clean_file = &declutter_portfile($file);
10620: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10621: my $current_locks = $current_permissions{$file};
10622: my @new_locks;
10623: my @del_keys;
10624: if (ref($current_locks) eq "ARRAY"){
10625: foreach my $locker (@{$current_locks}) {
10626: my $compare=$locker;
10627: if (ref($locker) eq 'ARRAY') {
10628: $compare=join('',@{$locker});
10629: if ($compare ne $symb_crs) {
10630: push(@new_locks, $locker);
10631: }
10632: }
10633: }
10634: if (scalar(@new_locks) > 0) {
10635: $current_permissions{$file} = \@new_locks;
10636: } else {
10637: push(@del_keys, $file);
10638: &del('file_permissions',\@del_keys, $domain, $user);
10639: delete($current_permissions{$file});
10640: }
10641: }
10642: }
10643: &put('file_permissions',\%current_permissions,$domain,$user);
10644: return;
10645: }
10646:
10647: # ------------------------------------------------------------ Directory lister
10648:
10649: sub dirlist {
10650: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10651: $uri=~s/^\///;
10652: $uri=~s/\/$//;
10653: my ($udom, $uname);
10654: if ($getuserdir) {
10655: $udom = $userdomain;
10656: $uname = $username;
10657: } else {
10658: (undef,$udom,$uname)=split(/\//,$uri);
10659: if(defined($userdomain)) {
10660: $udom = $userdomain;
10661: }
10662: if(defined($username)) {
10663: $uname = $username;
10664: }
10665: }
10666: my ($dirRoot,$listing,@listing_results);
10667:
10668: $dirRoot = $perlvar{'lonDocRoot'};
10669: if (defined($getpropath)) {
10670: $dirRoot = &propath($udom,$uname);
10671: $dirRoot =~ s/\/$//;
10672: } elsif (defined($getuserdir)) {
10673: my $subdir=$uname.'__';
10674: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10675: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10676: ."/$udom/$subdir/$uname";
10677: } elsif (defined($alternateRoot)) {
10678: $dirRoot = $alternateRoot;
10679: }
10680:
10681: if($udom) {
10682: if($uname) {
10683: my $uhome = &homeserver($uname,$udom);
10684: if ($uhome eq 'no_host') {
10685: return ([],'no_host');
10686: }
10687: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10688: .$getuserdir.':'.&escape($dirRoot)
10689: .':'.&escape($uname).':'.&escape($udom),$uhome);
10690: if ($listing eq 'unknown_cmd') {
10691: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10692: } else {
10693: @listing_results = map { &unescape($_); } split(/:/,$listing);
10694: }
10695: if ($listing eq 'unknown_cmd') {
10696: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10697: @listing_results = split(/:/,$listing);
10698: } else {
10699: @listing_results = map { &unescape($_); } split(/:/,$listing);
10700: }
10701: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10702: ($listing eq 'rejected') || ($listing eq 'refused') ||
10703: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10704: return ([],$listing);
10705: } else {
10706: return (\@listing_results);
10707: }
10708: } elsif(!$alternateRoot) {
10709: my (%allusers,%listerror);
10710: my %servers = &get_servers($udom,'library');
10711: foreach my $tryserver (keys(%servers)) {
10712: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10713: &escape($udom),$tryserver);
10714: if ($listing eq 'unknown_cmd') {
10715: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10716: $udom, $tryserver);
10717: } else {
10718: @listing_results = map { &unescape($_); } split(/:/,$listing);
10719: }
10720: if ($listing eq 'unknown_cmd') {
10721: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10722: $udom, $tryserver);
10723: @listing_results = split(/:/,$listing);
10724: } else {
10725: @listing_results =
10726: map { &unescape($_); } split(/:/,$listing);
10727: }
10728: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10729: ($listing eq 'rejected') || ($listing eq 'refused') ||
10730: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10731: $listerror{$tryserver} = $listing;
10732: } else {
10733: foreach my $line (@listing_results) {
10734: my ($entry) = split(/&/,$line,2);
10735: $allusers{$entry} = 1;
10736: }
10737: }
10738: }
10739: my @alluserslist=();
10740: foreach my $user (sort(keys(%allusers))) {
10741: push(@alluserslist,$user.'&user');
10742: }
10743:
10744: if (!%listerror) {
10745: # no errors
10746: return (\@alluserslist);
10747: } elsif (scalar(keys(%servers)) == 1) {
10748: # one library server, one error
10749: my ($key) = keys(%listerror);
10750: return (\@alluserslist, $listerror{$key});
10751: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10752: # con_lost indicates that we might miss data from at least one
10753: # library server
10754: return (\@alluserslist, 'con_lost');
10755: } else {
10756: # multiple library servers and no con_lost -> data should be
10757: # complete.
10758: return (\@alluserslist);
10759: }
10760:
10761: } else {
10762: return ([],'missing username');
10763: }
10764: } elsif(!defined($getpropath)) {
10765: my $path = $perlvar{'lonDocRoot'}.'/res/';
10766: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10767: return (\@all_domains);
10768: } else {
10769: return ([],'missing domain');
10770: }
10771: }
10772:
10773: # --------------------------------------------- GetFileTimestamp
10774: # This function utilizes dirlist and returns the date stamp for
10775: # when it was last modified. It will also return an error of -1
10776: # if an error occurs
10777:
10778: sub GetFileTimestamp {
10779: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10780: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10781: $studentName = &LONCAPA::clean_username($studentName);
10782: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10783: undef,$getuserdir);
10784: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10785: return -1;
10786: }
10787: if (ref($fileref) eq 'ARRAY') {
10788: my @stats = split('&',$fileref->[0]);
10789: # @stats contains first the filename, then the stat output
10790: return $stats[10]; # so this is 10 instead of 9.
10791: } else {
10792: return -1;
10793: }
10794: }
10795:
10796: sub stat_file {
10797: my ($uri) = @_;
10798: $uri = &clutter_with_no_wrapper($uri);
10799:
10800: my ($udom,$uname,$file);
10801: if ($uri =~ m-^/(uploaded|editupload)/-) {
10802: ($udom,$uname,$file) =
10803: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10804: $file = 'userfiles/'.$file;
10805: }
10806: if ($uri =~ m-^/res/-) {
10807: ($udom,$uname) =
10808: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10809: $file = $uri;
10810: }
10811:
10812: if (!$udom || !$uname || !$file) {
10813: # unable to handle the uri
10814: return ();
10815: }
10816: my $getpropath;
10817: if ($file =~ /^userfiles\//) {
10818: $getpropath = 1;
10819: }
10820: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10821: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10822: return ();
10823: } else {
10824: if (ref($listref) eq 'ARRAY') {
10825: my @stats = split('&',$listref->[0]);
10826: shift(@stats); #filename is first
10827: return @stats;
10828: }
10829: }
10830: return ();
10831: }
10832:
10833: # --------------------------------------------------------- recursedirs
10834: # Recursive function to traverse either a specific user's Authoring Space
10835: # or corresponding Published Resource Space, and populate the hash ref:
10836: # $dirhashref with URLs of all directories, and if $filehashref hash
10837: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
10838: # or .rights files in resource space, and .meta, .save, .log, and .bak
10839: # files in Authoring Space.
10840: #
10841: # Inputs:
10842: #
10843: # $is_home - true if current server is home server for user's space
10844: # $context - either: priv, or res respectively for Authoring or Resource Space.
10845: # $docroot - Document root (i.e., /home/httpd/html
10846: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
10847: # $relpath - Current path (relative to top level).
10848: # $dirhashref - reference to hash to populate with URLs of directories (Required)
10849: # $filehashref - reference to hash to populate with URLs of files (Optional)
10850: #
10851: # Returns: nothing
10852: #
10853: # Side Effects: populates $dirhashref, and $filehashref (if provided).
10854: #
10855: # Currently used by interface/londocs.pm to create linked select boxes for
10856: # directory and filename to import a Course "Author" resource into a course, and
10857: # also to create linked select boxes for Authoring Space and Directory to choose
10858: # save location for creation of a new "standard" problem from the Course Editor.
10859: #
10860:
10861: sub recursedirs {
10862: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
10863: return unless (ref($dirhashref) eq 'HASH');
10864: my $currpath = $docroot.$toppath;
10865: if ($relpath) {
10866: $currpath .= "/$relpath";
10867: }
10868: my $savefile;
10869: if (ref($filehashref)) {
10870: $savefile = 1;
10871: }
10872: if ($is_home) {
10873: if (opendir(my $dirh,$currpath)) {
10874: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
10875: next if ($item eq '');
10876: if (-d "$currpath/$item") {
10877: my $newpath;
10878: if ($relpath) {
10879: $newpath = "$relpath/$item";
10880: } else {
10881: $newpath = $item;
10882: }
10883: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10884: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10885: } elsif ($savefile) {
10886: if ($context eq 'priv') {
10887: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10888: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10889: }
10890: } else {
10891: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
10892: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10893: }
10894: }
10895: }
10896: }
10897: closedir($dirh);
10898: }
10899: } else {
10900: my ($dirlistref,$listerror) =
10901: &dirlist($toppath.$relpath);
10902: my @dir_lines;
10903: my $dirptr=16384;
10904: if (ref($dirlistref) eq 'ARRAY') {
10905: foreach my $dir_line (sort
10906: {
10907: my ($afile)=split('&',$a,2);
10908: my ($bfile)=split('&',$b,2);
10909: return (lc($afile) cmp lc($bfile));
10910: } (@{$dirlistref})) {
10911: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
10912: split(/\&/,$dir_line,16);
10913: $item =~ s/\s+$//;
10914: next if (($item =~ /^\.\.?$/) || ($obs));
10915: if ($dirptr&$testdir) {
10916: my $newpath;
10917: if ($relpath) {
10918: $newpath = "$relpath/$item";
10919: } else {
10920: $relpath = '/';
10921: $newpath = $item;
10922: }
10923: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10924: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10925: } elsif ($savefile) {
10926: if ($context eq 'priv') {
10927: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10928: $filehashref->{$relpath}{$item} = 1;
10929: }
10930: } else {
10931: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
10932: $filehashref->{$relpath}{$item} = 1;
10933: }
10934: }
10935: }
10936: }
10937: }
10938: }
10939: return;
10940: }
10941:
10942: # -------------------------------------------------------- Value of a Condition
10943:
10944: # gets the value of a specific preevaluated condition
10945: # stored in the string $env{user.state.<cid>}
10946: # or looks up a condition reference in the bighash and if if hasn't
10947: # already been evaluated recurses into docondval to get the value of
10948: # the condition, then memoizing it to
10949: # $env{user.state.<cid>.<condition>}
10950: sub directcondval {
10951: my $number=shift;
10952: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10953: &Apache::lonuserstate::evalstate();
10954: }
10955: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10956: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10957: } elsif ($number =~ /^_/) {
10958: my $sub_condition;
10959: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10960: &GDBM_READER(),0640)) {
10961: $sub_condition=$bighash{'conditions'.$number};
10962: untie(%bighash);
10963: }
10964: my $value = &docondval($sub_condition);
10965: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10966: return $value;
10967: }
10968: if ($env{'user.state.'.$env{'request.course.id'}}) {
10969: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10970: } else {
10971: return 2;
10972: }
10973: }
10974:
10975: # get the collection of conditions for this resource
10976: sub condval {
10977: my $condidx=shift;
10978: my $allpathcond='';
10979: foreach my $cond (split(/\|/,$condidx)) {
10980: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10981: $allpathcond.=
10982: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10983: }
10984: }
10985: $allpathcond=~s/\|$//;
10986: return &docondval($allpathcond);
10987: }
10988:
10989: #evaluates an expression of conditions
10990: sub docondval {
10991: my ($allpathcond) = @_;
10992: my $result=0;
10993: if ($env{'request.course.id'}
10994: && defined($allpathcond)) {
10995: my $operand='|';
10996: my @stack;
10997: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10998: if ($chunk eq '(') {
10999: push @stack,($operand,$result);
11000: } elsif ($chunk eq ')') {
11001: my $before=pop @stack;
11002: if (pop @stack eq '&') {
11003: $result=$result>$before?$before:$result;
11004: } else {
11005: $result=$result>$before?$result:$before;
11006: }
11007: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11008: $operand=$chunk;
11009: } else {
11010: my $new=directcondval($chunk);
11011: if ($operand eq '&') {
11012: $result=$result>$new?$new:$result;
11013: } else {
11014: $result=$result>$new?$result:$new;
11015: }
11016: }
11017: }
11018: }
11019: return $result;
11020: }
11021:
11022: # ---------------------------------------------------- Devalidate courseresdata
11023:
11024: sub devalidatecourseresdata {
11025: my ($coursenum,$coursedomain)=@_;
11026: my $hashid=$coursenum.':'.$coursedomain;
11027: &devalidate_cache_new('courseres',$hashid);
11028: }
11029:
11030:
11031: # --------------------------------------------------- Course Resourcedata Query
11032: #
11033: # Parameters:
11034: # $coursenum - Number of the course.
11035: # $coursedomain - Domain at which the course was created.
11036: # Returns:
11037: # A hash of the course parameters along (I think) with timestamps
11038: # and version info.
11039:
11040: sub get_courseresdata {
11041: my ($coursenum,$coursedomain)=@_;
11042: my $coursehom=&homeserver($coursenum,$coursedomain);
11043: my $hashid=$coursenum.':'.$coursedomain;
11044: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11045: my %dumpreply;
11046: unless (defined($cached)) {
11047: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11048: $result=\%dumpreply;
11049: my ($tmp) = keys(%dumpreply);
11050: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11051: &do_cache_new('courseres',$hashid,$result,600);
11052: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11053: return $tmp;
11054: } elsif ($tmp =~ /^(error)/) {
11055: $result=undef;
11056: &do_cache_new('courseres',$hashid,$result,600);
11057: }
11058: }
11059: return $result;
11060: }
11061:
11062: sub devalidateuserresdata {
11063: my ($uname,$udom)=@_;
11064: my $hashid="$udom:$uname";
11065: &devalidate_cache_new('userres',$hashid);
11066: }
11067:
11068: sub get_userresdata {
11069: my ($uname,$udom)=@_;
11070: #most student don\'t have any data set, check if there is some data
11071: if (&EXT_cache_status($udom,$uname)) { return undef; }
11072:
11073: my $hashid="$udom:$uname";
11074: my ($result,$cached)=&is_cached_new('userres',$hashid);
11075: if (!defined($cached)) {
11076: my %resourcedata=&dump('resourcedata',$udom,$uname);
11077: $result=\%resourcedata;
11078: &do_cache_new('userres',$hashid,$result,600);
11079: }
11080: my ($tmp)=keys(%$result);
11081: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11082: return $result;
11083: }
11084: #error 2 occurs when the .db doesn't exist
11085: if ($tmp!~/error: 2 /) {
11086: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11087: &logthis("<font color=\"blue\">WARNING:".
11088: " Trying to get resource data for ".
11089: $uname." at ".$udom.": ".
11090: $tmp."</font>");
11091: }
11092: } elsif ($tmp=~/error: 2 /) {
11093: #&EXT_cache_set($udom,$uname);
11094: &do_cache_new('userres',$hashid,undef,600);
11095: undef($tmp); # not really an error so don't send it back
11096: }
11097: return $tmp;
11098: }
11099: #----------------------------------------------- resdata - return resource data
11100: # Purpose:
11101: # Return resource data for either users or for a course.
11102: # Parameters:
11103: # $name - Course/user name.
11104: # $domain - Name of the domain the user/course is registered on.
11105: # $type - Type of thing $name is (must be 'course' or 'user')
11106: # $mapp - decluttered URL of enclosing map
11107: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11108: # $recurseup - Ref to array of map URLs, starting with map containing
11109: # $mapp up through hierarchy of nested maps to top level map.
11110: # $courseid - CourseID (first part of param identifier).
11111: # $modifier - Middle part of param identifier.
11112: # $what - Last part of param identifier.
11113: # @which - Array of names of resources desired.
11114: # Returns:
11115: # The value of the first reasource in @which that is found in the
11116: # resource hash.
11117: # Exceptional Conditions:
11118: # If the $type passed in is not valid (not the string 'course' or
11119: # 'user', an undefined reference is returned.
11120: # If none of the resources are found, an undef is returned
11121: sub resdata {
11122: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11123: $modifier,$what,@which)=@_;
11124: my $result;
11125: if ($type eq 'course') {
11126: $result=&get_courseresdata($name,$domain);
11127: } elsif ($type eq 'user') {
11128: $result=&get_userresdata($name,$domain);
11129: }
11130: if (!ref($result)) { return $result; }
11131: foreach my $item (@which) {
11132: if ($item->[1] eq 'course') {
11133: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11134: unless ($$recursed) {
11135: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11136: $$recursed = 1;
11137: }
11138: foreach my $item (@${recurseup}) {
11139: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11140: last if (defined($result->{$norecursechk}));
11141: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11142: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11143: }
11144: }
11145: }
11146: if (defined($result->{$item->[0]})) {
11147: return [$result->{$item->[0]},$item->[1]];
11148: }
11149: }
11150: return undef;
11151: }
11152:
11153: sub get_domain_ltitools {
11154: my ($cdom) = @_;
11155: my %ltitools;
11156: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
11157: if (defined($cached)) {
11158: if (ref($result) eq 'HASH') {
11159: %ltitools = %{$result};
11160: }
11161: } else {
11162: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
11163: if (ref($domconfig{'ltitools'}) eq 'HASH') {
11164: %ltitools = %{$domconfig{'ltitools'}};
11165: my %encdomconfig = &get_dom('encconfig',['ltitools'],$cdom);
11166: if (ref($encdomconfig{'ltitools'}) eq 'HASH') {
11167: foreach my $id (keys(%ltitools)) {
11168: if (ref($encdomconfig{'ltitools'}{$id}) eq 'HASH') {
11169: foreach my $item ('key','secret') {
11170: $ltitools{$id}{$item} = $encdomconfig{'ltitools'}{$id}{$item};
11171: }
11172: }
11173: }
11174: }
11175: }
11176: my $cachetime = 24*60*60;
11177: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
11178: }
11179: return %ltitools;
11180: }
11181:
11182: sub get_numsuppfiles {
11183: my ($cnum,$cdom,$ignorecache)=@_;
11184: my $hashid=$cnum.':'.$cdom;
11185: my ($suppcount,$cached);
11186: unless ($ignorecache) {
11187: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11188: }
11189: unless (defined($cached)) {
11190: my $chome=&homeserver($cnum,$cdom);
11191: unless ($chome eq 'no_host') {
11192: ($suppcount,my $errors) = (0,0);
11193: my $suppmap = 'supplemental.sequence';
11194: ($suppcount,$errors) =
11195: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
11196: }
11197: &do_cache_new('suppcount',$hashid,$suppcount,600);
11198: }
11199: return $suppcount;
11200: }
11201:
11202: #
11203: # EXT resource caching routines
11204: #
11205:
11206: {
11207: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11208: #
11209: # The course for which we cache
11210: my $cachedmapkey='';
11211: # The cached recursive maps for this course
11212: my %cachedmaps=();
11213: # When this was last done
11214: my $cachedmaptime='';
11215:
11216: sub clear_EXT_cache_status {
11217: &delenv('cache.EXT.');
11218: }
11219:
11220: sub EXT_cache_status {
11221: my ($target_domain,$target_user) = @_;
11222: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11223: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11224: # We know already the user has no data
11225: return 1;
11226: } else {
11227: return 0;
11228: }
11229: }
11230:
11231: sub EXT_cache_set {
11232: my ($target_domain,$target_user) = @_;
11233: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11234: #&appenv({$cachename => time});
11235: }
11236:
11237: # --------------------------------------------------------- Value of a Variable
11238: sub EXT {
11239:
11240: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11241: unless ($varname) { return ''; }
11242: #get real user name/domain, courseid and symb
11243: my $courseid;
11244: my $publicuser;
11245: if ($symbparm) {
11246: $symbparm=&get_symb_from_alias($symbparm);
11247: }
11248: if (!($uname && $udom)) {
11249: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11250: if (!$symbparm) { $symbparm=$cursymb; }
11251: } else {
11252: $courseid=$env{'request.course.id'};
11253: }
11254: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11255: my $rest;
11256: if (defined($therest[0])) {
11257: $rest=join('.',@therest);
11258: } else {
11259: $rest='';
11260: }
11261:
11262: my $qualifierrest=$qualifier;
11263: if ($rest) { $qualifierrest.='.'.$rest; }
11264: my $spacequalifierrest=$space;
11265: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11266: if ($realm eq 'user') {
11267: # --------------------------------------------------------------- user.resource
11268: if ($space eq 'resource') {
11269: if ( (defined($Apache::lonhomework::parsing_a_problem)
11270: || defined($Apache::lonhomework::parsing_a_task))
11271: &&
11272: ($symbparm eq &symbread()) ) {
11273: # if we are in the middle of processing the resource the
11274: # get the value we are planning on committing
11275: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11276: return $Apache::lonhomework::results{$qualifierrest};
11277: } else {
11278: return $Apache::lonhomework::history{$qualifierrest};
11279: }
11280: } else {
11281: my %restored;
11282: if ($publicuser || $env{'request.state'} eq 'construct') {
11283: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11284: } else {
11285: %restored=&restore($symbparm,$courseid,$udom,$uname);
11286: }
11287: return $restored{$qualifierrest};
11288: }
11289: # ----------------------------------------------------------------- user.access
11290: } elsif ($space eq 'access') {
11291: # FIXME - not supporting calls for a specific user
11292: return &allowed($qualifier,$rest);
11293: # ------------------------------------------ user.preferences, user.environment
11294: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11295: if (($uname eq $env{'user.name'}) &&
11296: ($udom eq $env{'user.domain'})) {
11297: return $env{join('.',('environment',$qualifierrest))};
11298: } else {
11299: my %returnhash;
11300: if (!$publicuser) {
11301: %returnhash=&userenvironment($udom,$uname,
11302: $qualifierrest);
11303: }
11304: return $returnhash{$qualifierrest};
11305: }
11306: # ----------------------------------------------------------------- user.course
11307: } elsif ($space eq 'course') {
11308: # FIXME - not supporting calls for a specific user
11309: return $env{join('.',('request.course',$qualifier))};
11310: # ------------------------------------------------------------------- user.role
11311: } elsif ($space eq 'role') {
11312: # FIXME - not supporting calls for a specific user
11313: my ($role,$where)=split(/\./,$env{'request.role'});
11314: if ($qualifier eq 'value') {
11315: return $role;
11316: } elsif ($qualifier eq 'extent') {
11317: return $where;
11318: }
11319: # ----------------------------------------------------------------- user.domain
11320: } elsif ($space eq 'domain') {
11321: return $udom;
11322: # ------------------------------------------------------------------- user.name
11323: } elsif ($space eq 'name') {
11324: return $uname;
11325: # ---------------------------------------------------- Any other user namespace
11326: } else {
11327: my %reply;
11328: if (!$publicuser) {
11329: %reply=&get($space,[$qualifierrest],$udom,$uname);
11330: }
11331: return $reply{$qualifierrest};
11332: }
11333: } elsif ($realm eq 'query') {
11334: # ---------------------------------------------- pull stuff out of query string
11335: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11336: [$spacequalifierrest]);
11337: return $env{'form.'.$spacequalifierrest};
11338: } elsif ($realm eq 'request') {
11339: # ------------------------------------------------------------- request.browser
11340: if ($space eq 'browser') {
11341: return $env{'browser.'.$qualifier};
11342: # ------------------------------------------------------------ request.filename
11343: } else {
11344: return $env{'request.'.$spacequalifierrest};
11345: }
11346: } elsif ($realm eq 'course') {
11347: # ---------------------------------------------------------- course.description
11348: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11349: } elsif ($realm eq 'resource') {
11350:
11351: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11352: if (!$symbparm) { $symbparm=&symbread(); }
11353: }
11354:
11355: if ($qualifier eq '') {
11356: if ($space eq 'title') {
11357: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11358: return &gettitle($symbparm);
11359: }
11360:
11361: if ($space eq 'map') {
11362: my ($map) = &decode_symb($symbparm);
11363: return &symbread($map);
11364: }
11365: if ($space eq 'maptitle') {
11366: my ($map) = &decode_symb($symbparm);
11367: return &gettitle($map);
11368: }
11369: if ($space eq 'filename') {
11370: if ($symbparm) {
11371: return &clutter((&decode_symb($symbparm))[2]);
11372: }
11373: return &hreflocation('',$env{'request.filename'});
11374: }
11375:
11376: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11377: if ($space eq 'visibleparts') {
11378: my $navmap = Apache::lonnavmaps::navmap->new();
11379: my $item;
11380: if (ref($navmap)) {
11381: my $res = $navmap->getBySymb($symbparm);
11382: my $parts = $res->parts();
11383: if (ref($parts) eq 'ARRAY') {
11384: $item = join(',',@{$parts});
11385: }
11386: undef($navmap);
11387: }
11388: return $item;
11389: }
11390: }
11391: }
11392:
11393: my ($section, $group, @groups, @recurseup, $recursed);
11394: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11395: if (($courseid eq '') && ($cid)) {
11396: $courseid = $cid;
11397: }
11398: if (($symbparm && $courseid) &&
11399: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11400:
11401: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11402:
11403: # ----------------------------------------------------- Cascading lookup scheme
11404: my $symbp=$symbparm;
11405: $mapp=&deversion((&decode_symb($symbp))[0]);
11406: my $symbparm=$symbp.'.'.$spacequalifierrest;
11407: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11408: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11409: if (($env{'user.name'} eq $uname) &&
11410: ($env{'user.domain'} eq $udom)) {
11411: $section=$env{'request.course.sec'};
11412: @groups = split(/:/,$env{'request.course.groups'});
11413: @groups=&sort_course_groups($courseid,@groups);
11414: } else {
11415: if (! defined($usection)) {
11416: $section=&getsection($udom,$uname,$courseid);
11417: } else {
11418: $section = $usection;
11419: }
11420: @groups = &get_users_groups($udom,$uname,$courseid);
11421: }
11422:
11423: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11424: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11425: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11426: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11427:
11428: $courselevel=$courseid.'.'.$spacequalifierrest;
11429: my $courselevelr=$courseid.'.'.$symbparm;
11430: $courseleveli=$courseid.'.'.$recurseparm;
11431: $courselevelm=$courseid.'.'.$mapparm;
11432:
11433: # ----------------------------------------------------------- first, check user
11434:
11435: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11436: \@recurseup,$courseid,'.',$spacequalifierrest,
11437: ([$courselevelr,'resource'],
11438: [$courselevelm,'map' ],
11439: [$courseleveli,'map' ],
11440: [$courselevel, 'course' ]));
11441: if (defined($userreply)) { return &get_reply($userreply); }
11442:
11443: # ------------------------------------------------ second, check some of course
11444: my $coursereply;
11445: if (@groups > 0) {
11446: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11447: $recurseparm,$mapparm,$spacequalifierrest,
11448: $mapp,\$recursed,\@recurseup);
11449: if (defined($coursereply)) { return &get_reply($coursereply); }
11450: }
11451:
11452: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11453: $env{'course.'.$courseid.'.domain'},
11454: 'course',$mapp,\$recursed,\@recurseup,
11455: $courseid,'.['.$section.'].',$spacequalifierrest,
11456: ([$seclevelr, 'resource'],
11457: [$seclevelm, 'map' ],
11458: [$secleveli, 'map' ],
11459: [$seclevel, 'course' ],
11460: [$courselevelr,'resource']));
11461: if (defined($coursereply)) { return &get_reply($coursereply); }
11462:
11463: # ------------------------------------------------------ third, check map parms
11464: my %parmhash=();
11465: my $thisparm='';
11466: if (tie(%parmhash,'GDBM_File',
11467: $env{'request.course.fn'}.'_parms.db',
11468: &GDBM_READER(),0640)) {
11469: $thisparm=$parmhash{$symbparm};
11470: untie(%parmhash);
11471: }
11472: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11473: }
11474: # ------------------------------------------ fourth, look in resource metadata
11475:
11476: my $what = $spacequalifierrest;
11477: $what=~s/\./\_/;
11478: my $filename;
11479: if (!$symbparm) { $symbparm=&symbread(); }
11480: if ($symbparm) {
11481: $filename=(&decode_symb($symbparm))[2];
11482: } else {
11483: $filename=$env{'request.filename'};
11484: }
11485: my $metadata=&metadata($filename,$what);
11486: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11487: $metadata=&metadata($filename,'parameter_'.$what);
11488: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11489:
11490: # ----------------------------------------------- fifth, look in rest of course
11491: if ($symbparm && defined($courseid) &&
11492: $courseid eq $env{'request.course.id'}) {
11493: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11494: $env{'course.'.$courseid.'.domain'},
11495: 'course',$mapp,\$recursed,\@recurseup,
11496: $courseid,'.',$spacequalifierrest,
11497: ([$courselevelm,'map' ],
11498: [$courseleveli,'map' ],
11499: [$courselevel, 'course']));
11500: if (defined($coursereply)) { return &get_reply($coursereply); }
11501: }
11502: # ------------------------------------------------------------------ Cascade up
11503: unless ($space eq '0') {
11504: my @parts=split(/_/,$space);
11505: my $id=pop(@parts);
11506: my $part=join('_',@parts);
11507: if ($part eq '') { $part='0'; }
11508: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11509: $symbparm,$udom,$uname,$section,1);
11510: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11511: }
11512: if ($recurse) { return undef; }
11513: my $pack_def=&packages_tab_default($filename,$varname);
11514: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11515: # ---------------------------------------------------- Any other user namespace
11516: } elsif ($realm eq 'environment') {
11517: # ----------------------------------------------------------------- environment
11518: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11519: return $env{'environment.'.$spacequalifierrest};
11520: } else {
11521: if ($uname eq 'anonymous' && $udom eq '') {
11522: return '';
11523: }
11524: my %returnhash=&userenvironment($udom,$uname,
11525: $spacequalifierrest);
11526: return $returnhash{$spacequalifierrest};
11527: }
11528: } elsif ($realm eq 'system') {
11529: # ----------------------------------------------------------------- system.time
11530: if ($space eq 'time') {
11531: return time;
11532: }
11533: } elsif ($realm eq 'server') {
11534: # ----------------------------------------------------------------- system.time
11535: if ($space eq 'name') {
11536: return $ENV{'SERVER_NAME'};
11537: }
11538: }
11539: return '';
11540: }
11541:
11542: sub get_reply {
11543: my ($reply_value) = @_;
11544: if (ref($reply_value) eq 'ARRAY') {
11545: if (wantarray) {
11546: return @$reply_value;
11547: }
11548: return $reply_value->[0];
11549: } else {
11550: return $reply_value;
11551: }
11552: }
11553:
11554: sub check_group_parms {
11555: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11556: $recursed,$recurseupref) = @_;
11557: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11558: [$what,'course']);
11559: my $coursereply;
11560: foreach my $group (@{$groups}) {
11561: my @groupitems = ();
11562: foreach my $level (@levels) {
11563: my $item = $courseid.'.['.$group.'].'.$level->[0];
11564: push(@groupitems,[$item,$level->[1]]);
11565: }
11566: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11567: $env{'course.'.$courseid.'.domain'},
11568: 'course',$mapp,$recursed,$recurseupref,
11569: $courseid,'.['.$group.'].',$what,
11570: @groupitems);
11571: last if (defined($coursereply));
11572: }
11573: return $coursereply;
11574: }
11575:
11576: sub get_map_hierarchy {
11577: my ($mapname,$courseid) = @_;
11578: my @recurseup = ();
11579: if ($mapname) {
11580: if (($cachedmapkey eq $courseid) &&
11581: (abs($cachedmaptime-time)<5)) {
11582: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11583: return @{$cachedmaps{$mapname}};
11584: }
11585: }
11586: my $navmap = Apache::lonnavmaps::navmap->new();
11587: if (ref($navmap)) {
11588: @recurseup = $navmap->recurseup_maps($mapname);
11589: undef($navmap);
11590: $cachedmaps{$mapname} = \@recurseup;
11591: $cachedmaptime=time;
11592: $cachedmapkey=$courseid;
11593: }
11594: }
11595: return @recurseup;
11596: }
11597:
11598: }
11599:
11600: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11601: my ($courseid,@groups) = @_;
11602: @groups = sort(@groups);
11603: return @groups;
11604: }
11605:
11606: sub packages_tab_default {
11607: my ($uri,$varname)=@_;
11608: my (undef,$part,$name)=split(/\./,$varname);
11609:
11610: my (@extension,@specifics,$do_default);
11611: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
11612: my ($pack_type,$pack_part)=split(/_/,$package,2);
11613: if ($pack_type eq 'default') {
11614: $do_default=1;
11615: } elsif ($pack_type eq 'extension') {
11616: push(@extension,[$package,$pack_type,$pack_part]);
11617: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11618: # only look at packages defaults for packages that this id is
11619: push(@specifics,[$package,$pack_type,$pack_part]);
11620: }
11621: }
11622: # first look for a package that matches the requested part id
11623: foreach my $package (@specifics) {
11624: my (undef,$pack_type,$pack_part)=@{$package};
11625: next if ($pack_part ne $part);
11626: if (defined($packagetab{"$pack_type&$name&default"})) {
11627: return $packagetab{"$pack_type&$name&default"};
11628: }
11629: }
11630: # look for any possible matching non extension_ package
11631: foreach my $package (@specifics) {
11632: my (undef,$pack_type,$pack_part)=@{$package};
11633: if (defined($packagetab{"$pack_type&$name&default"})) {
11634: return $packagetab{"$pack_type&$name&default"};
11635: }
11636: if ($pack_type eq 'part') { $pack_part='0'; }
11637: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11638: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11639: }
11640: }
11641: # look for any posible extension_ match
11642: foreach my $package (@extension) {
11643: my ($package,$pack_type)=@{$package};
11644: if (defined($packagetab{"$pack_type&$name&default"})) {
11645: return $packagetab{"$pack_type&$name&default"};
11646: }
11647: if (defined($packagetab{$package."&$name&default"})) {
11648: return $packagetab{$package."&$name&default"};
11649: }
11650: }
11651: # look for a global default setting
11652: if ($do_default && defined($packagetab{"default&$name&default"})) {
11653: return $packagetab{"default&$name&default"};
11654: }
11655: return undef;
11656: }
11657:
11658: sub add_prefix_and_part {
11659: my ($prefix,$part)=@_;
11660: my $keyroot;
11661: if (defined($prefix) && $prefix !~ /^__/) {
11662: # prefix that has a part already
11663: $keyroot=$prefix;
11664: } elsif (defined($prefix)) {
11665: # prefix that is missing a part
11666: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11667: } else {
11668: # no prefix at all
11669: if (defined($part)) { $keyroot='_'.$part; }
11670: }
11671: return $keyroot;
11672: }
11673:
11674: # ---------------------------------------------------------------- Get metadata
11675:
11676: my %metaentry;
11677: my %importedpartids;
11678: sub metadata {
11679: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
11680: $uri=&declutter($uri);
11681: # if it is a non metadata possible uri return quickly
11682: if (($uri eq '') ||
11683: (($uri =~ m|^/*adm/|) &&
11684: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11685: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11686: return undef;
11687: }
11688: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11689: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11690: return undef;
11691: }
11692: my $filename=$uri;
11693: $uri=~s/\.meta$//;
11694: #
11695: # Is the metadata already cached?
11696: # Look at timestamp of caching
11697: # Everything is cached by the main uri, libraries are never directly cached
11698: #
11699: if (!defined($liburi)) {
11700: my ($result,$cached)=&is_cached_new('meta',$uri);
11701: if (defined($cached)) { return $result->{':'.$what}; }
11702: }
11703: {
11704: # Imported parts would go here
11705: my %importedids=();
11706: my @origfileimportpartids=();
11707: my $importedparts=0;
11708: #
11709: # Is this a recursive call for a library?
11710: #
11711: # if (! exists($metacache{$uri})) {
11712: # $metacache{$uri}={};
11713: # }
11714: my $cachetime = 60*60;
11715: if ($liburi) {
11716: $liburi=&declutter($liburi);
11717: $filename=$liburi;
11718: } else {
11719: &devalidate_cache_new('meta',$uri);
11720: undef(%metaentry);
11721: }
11722: my %metathesekeys=();
11723: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11724: my $metastring;
11725: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11726: my $which = &hreflocation('','/'.($liburi || $uri));
11727: $metastring =
11728: &Apache::lonnet::ssi_body($which,
11729: ('grade_target' => 'meta'));
11730: $cachetime = 1; # only want this cached in the child not long term
11731: } elsif (($uri !~ m -^(editupload)/-) &&
11732: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11733: my $file=&filelocation('',&clutter($filename));
11734: #push(@{$metaentry{$uri.'.file'}},$file);
11735: $metastring=&getfile($file);
11736: }
11737: my $parser=HTML::LCParser->new(\$metastring);
11738: my $token;
11739: undef %metathesekeys;
11740: while ($token=$parser->get_token) {
11741: if ($token->[0] eq 'S') {
11742: if (defined($token->[2]->{'package'})) {
11743: #
11744: # This is a package - get package info
11745: #
11746: my $package=$token->[2]->{'package'};
11747: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11748: if (defined($token->[2]->{'id'})) {
11749: $keyroot.='_'.$token->[2]->{'id'};
11750: }
11751: if ($metaentry{':packages'}) {
11752: $metaentry{':packages'}.=','.$package.$keyroot;
11753: } else {
11754: $metaentry{':packages'}=$package.$keyroot;
11755: }
11756: foreach my $pack_entry (keys(%packagetab)) {
11757: my $part=$keyroot;
11758: $part=~s/^\_//;
11759: if ($pack_entry=~/^\Q$package\E\&/ ||
11760: $pack_entry=~/^\Q$package\E_0\&/) {
11761: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11762: # ignore package.tab specified default values
11763: # here &package_tab_default() will fetch those
11764: if ($subp eq 'default') { next; }
11765: my $value=$packagetab{$pack_entry};
11766: my $unikey;
11767: if ($pack =~ /_0$/) {
11768: $unikey='parameter_0_'.$name;
11769: $part=0;
11770: } else {
11771: $unikey='parameter'.$keyroot.'_'.$name;
11772: }
11773: if ($subp eq 'display') {
11774: $value.=' [Part: '.$part.']';
11775: }
11776: $metaentry{':'.$unikey.'.part'}=$part;
11777: $metathesekeys{$unikey}=1;
11778: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11779: $metaentry{':'.$unikey.'.'.$subp}=$value;
11780: }
11781: if (defined($metaentry{':'.$unikey.'.default'})) {
11782: $metaentry{':'.$unikey}=
11783: $metaentry{':'.$unikey.'.default'};
11784: }
11785: }
11786: }
11787: } else {
11788: #
11789: # This is not a package - some other kind of start tag
11790: #
11791: my $entry=$token->[1];
11792: my $unikey='';
11793:
11794: if ($entry eq 'import') {
11795: #
11796: # Importing a library here
11797: #
11798: my $location=$parser->get_text('/import');
11799: my $dir=$filename;
11800: $dir=~s|[^/]*$||;
11801: $location=&filelocation($dir,$location);
11802:
11803: my $importmode=$token->[2]->{'importmode'};
11804: if ($importmode eq 'problem') {
11805: # Import as problem/response
11806: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11807: } elsif ($importmode eq 'part') {
11808: # Import as part(s)
11809: $importedparts=1;
11810: # We need to get the original file and the imported file to get the part order correct
11811: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
11812: # Load and inspect original file
11813: if ($#origfileimportpartids<0) {
11814: undef(%importedpartids);
11815: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11816: my $origfile=&getfile($origfilelocation);
11817: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11818: }
11819:
11820: # Load and inspect imported file
11821: my $impfile=&getfile($location);
11822: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11823: if ($#impfilepartids>=0) {
11824: # This problem had parts
11825: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11826: } else {
11827: # Importing by turning a single problem into a problem part
11828: # It gets the import-tags ID as part-ID
11829: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11830: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11831: }
11832: } else {
11833: # Normal import
11834: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11835: if (defined($token->[2]->{'id'})) {
11836: $unikey.='_'.$token->[2]->{'id'};
11837: }
11838: }
11839:
11840: if ($depthcount<20) {
11841: my $metadata =
11842: &metadata($uri,'keys', $location,$unikey,
11843: $depthcount+1);
11844: foreach my $meta (split(',',$metadata)) {
11845: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11846: $metathesekeys{$meta}=1;
11847: }
11848:
11849: }
11850: } else {
11851: #
11852: # Not importing, some other kind of non-package, non-library start tag
11853: #
11854: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11855: if (defined($token->[2]->{'id'})) {
11856: $unikey.='_'.$token->[2]->{'id'};
11857: }
11858: if (defined($token->[2]->{'name'})) {
11859: $unikey.='_'.$token->[2]->{'name'};
11860: }
11861: $metathesekeys{$unikey}=1;
11862: foreach my $param (@{$token->[3]}) {
11863: $metaentry{':'.$unikey.'.'.$param} =
11864: $token->[2]->{$param};
11865: }
11866: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11867: my $default=$metaentry{':'.$unikey.'.default'};
11868: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11869: # only ws inside the tag, and not in default, so use default
11870: # as value
11871: $metaentry{':'.$unikey}=$default;
11872: } elsif ( $internaltext =~ /\S/ ) {
11873: # something interesting inside the tag
11874: $metaentry{':'.$unikey}=$internaltext;
11875: } else {
11876: # no interesting values, don't set a default
11877: }
11878: # end of not-a-package not-a-library import
11879: }
11880: # end of not-a-package start tag
11881: }
11882: # the next is the end of "start tag"
11883: }
11884: }
11885: my ($extension) = ($uri =~ /\.(\w+)$/);
11886: $extension = lc($extension);
11887: if ($extension eq 'htm') { $extension='html'; }
11888:
11889: foreach my $key (keys(%packagetab)) {
11890: #no specific packages #how's our extension
11891: if ($key!~/^extension_\Q$extension\E&/) { next; }
11892: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11893: \%metathesekeys);
11894: }
11895:
11896: if (!exists($metaentry{':packages'})
11897: || $packagetab{"import_defaults&extension_$extension"}) {
11898: foreach my $key (keys(%packagetab)) {
11899: #no specific packages well let's get default then
11900: if ($key!~/^default&/) { next; }
11901: &metadata_create_package_def($uri,$key,'default',
11902: \%metathesekeys);
11903: }
11904: }
11905: # are there custom rights to evaluate
11906: if ($metaentry{':copyright'} eq 'custom') {
11907:
11908: #
11909: # Importing a rights file here
11910: #
11911: unless ($depthcount) {
11912: my $location=$metaentry{':customdistributionfile'};
11913: my $dir=$filename;
11914: $dir=~s|[^/]*$||;
11915: $location=&filelocation($dir,$location);
11916: my $rights_metadata =
11917: &metadata($uri,'keys',$location,'_rights',
11918: $depthcount+1);
11919: foreach my $rights (split(',',$rights_metadata)) {
11920: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11921: $metathesekeys{$rights}=1;
11922: }
11923: }
11924: }
11925: # uniqifiy package listing
11926: my %seen;
11927: my @uniq_packages =
11928: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11929: $metaentry{':packages'} = join(',',@uniq_packages);
11930:
11931: if ($importedparts) {
11932: # We had imported parts and need to rebuild partorder
11933: $metaentry{':partorder'}='';
11934: $metathesekeys{'partorder'}=1;
11935: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
11936: if ($origfileimportpartids[$index] eq 'part') {
11937: # original part, part of the problem
11938: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
11939: } else {
11940: # we have imported parts at this position
11941: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
11942: }
11943: }
11944: $metaentry{':partorder'}=~s/^\,//;
11945: }
11946:
11947: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11948: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11949: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11950: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11951: # this is the end of "was not already recently cached
11952: }
11953: return $metaentry{':'.$what};
11954: }
11955:
11956: sub metadata_create_package_def {
11957: my ($uri,$key,$package,$metathesekeys)=@_;
11958: my ($pack,$name,$subp)=split(/\&/,$key);
11959: if ($subp eq 'default') { next; }
11960:
11961: if (defined($metaentry{':packages'})) {
11962: $metaentry{':packages'}.=','.$package;
11963: } else {
11964: $metaentry{':packages'}=$package;
11965: }
11966: my $value=$packagetab{$key};
11967: my $unikey;
11968: $unikey='parameter_0_'.$name;
11969: $metaentry{':'.$unikey.'.part'}=0;
11970: $$metathesekeys{$unikey}=1;
11971: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11972: $metaentry{':'.$unikey.'.'.$subp}=$value;
11973: }
11974: if (defined($metaentry{':'.$unikey.'.default'})) {
11975: $metaentry{':'.$unikey}=
11976: $metaentry{':'.$unikey.'.default'};
11977: }
11978: }
11979:
11980: sub metadata_generate_part0 {
11981: my ($metadata,$metacache,$uri) = @_;
11982: my %allnames;
11983: foreach my $metakey (keys(%$metadata)) {
11984: if ($metakey=~/^parameter\_(.*)/) {
11985: my $part=$$metacache{':'.$metakey.'.part'};
11986: my $name=$$metacache{':'.$metakey.'.name'};
11987: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11988: $allnames{$name}=$part;
11989: }
11990: }
11991: }
11992: foreach my $name (keys(%allnames)) {
11993: $$metadata{"parameter_0_$name"}=1;
11994: my $key=":parameter_0_$name";
11995: $$metacache{"$key.part"}='0';
11996: $$metacache{"$key.name"}=$name;
11997: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11998: $allnames{$name}.'_'.$name.
11999: '.type'};
12000: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12001: '.display'};
12002: my $expr='[Part: '.$allnames{$name}.']';
12003: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12004: $$metacache{"$key.display"}=$olddis;
12005: }
12006: }
12007:
12008: # ------------------------------------------------------ Devalidate title cache
12009:
12010: sub devalidate_title_cache {
12011: my ($url)=@_;
12012: if (!$env{'request.course.id'}) { return; }
12013: my $symb=&symbread($url);
12014: if (!$symb) { return; }
12015: my $key=$env{'request.course.id'}."\0".$symb;
12016: &devalidate_cache_new('title',$key);
12017: }
12018:
12019: # ------------------------------------------------- Get the title of a course
12020:
12021: sub current_course_title {
12022: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12023: }
12024: # ------------------------------------------------- Get the title of a resource
12025:
12026: sub gettitle {
12027: my $urlsymb=shift;
12028: my $symb=&symbread($urlsymb);
12029: if ($symb) {
12030: my $key=$env{'request.course.id'}."\0".$symb;
12031: my ($result,$cached)=&is_cached_new('title',$key);
12032: if (defined($cached)) {
12033: return $result;
12034: }
12035: my ($map,$resid,$url)=&decode_symb($symb);
12036: my $title='';
12037: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12038: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12039: } else {
12040: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12041: &GDBM_READER(),0640)) {
12042: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12043: $title=$bighash{'title_'.$mapid.'.'.$resid};
12044: untie(%bighash);
12045: }
12046: }
12047: $title=~s/\&colon\;/\:/gs;
12048: if ($title) {
12049: # Remember both $symb and $title for dynamic metadata
12050: $accesshash{$symb.'___crstitle'}=$title;
12051: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12052: # Cache this title and then return it
12053: return &do_cache_new('title',$key,$title,600);
12054: }
12055: $urlsymb=$url;
12056: }
12057: my $title=&metadata($urlsymb,'title');
12058: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12059: return $title;
12060: }
12061:
12062: sub get_slot {
12063: my ($which,$cnum,$cdom)=@_;
12064: if (!$cnum || !$cdom) {
12065: (undef,my $courseid)=&whichuser();
12066: $cdom=$env{'course.'.$courseid.'.domain'};
12067: $cnum=$env{'course.'.$courseid.'.num'};
12068: }
12069: my $key=join("\0",'slots',$cdom,$cnum,$which);
12070: my %slotinfo;
12071: if (exists($remembered{$key})) {
12072: $slotinfo{$which} = $remembered{$key};
12073: } else {
12074: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12075: &Apache::lonhomework::showhash(%slotinfo);
12076: my ($tmp)=keys(%slotinfo);
12077: if ($tmp=~/^error:/) { return (); }
12078: $remembered{$key} = $slotinfo{$which};
12079: }
12080: if (ref($slotinfo{$which}) eq 'HASH') {
12081: return %{$slotinfo{$which}};
12082: }
12083: return $slotinfo{$which};
12084: }
12085:
12086: sub get_reservable_slots {
12087: my ($cnum,$cdom,$uname,$udom) = @_;
12088: my $now = time;
12089: my $reservable_info;
12090: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12091: if (exists($remembered{$key})) {
12092: $reservable_info = $remembered{$key};
12093: } else {
12094: my %resv;
12095: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12096: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12097: $reservable_info = \%resv;
12098: $remembered{$key} = $reservable_info;
12099: }
12100: return $reservable_info;
12101: }
12102:
12103: sub get_course_slots {
12104: my ($cnum,$cdom) = @_;
12105: my $hashid=$cnum.':'.$cdom;
12106: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12107: if (defined($cached)) {
12108: if (ref($result) eq 'HASH') {
12109: return %{$result};
12110: }
12111: } else {
12112: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12113: my ($tmp) = keys(%slots);
12114: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12115: &do_cache_new('allslots',$hashid,\%slots,600);
12116: return %slots;
12117: }
12118: }
12119: return;
12120: }
12121:
12122: sub devalidate_slots_cache {
12123: my ($cnum,$cdom)=@_;
12124: my $hashid=$cnum.':'.$cdom;
12125: &devalidate_cache_new('allslots',$hashid);
12126: }
12127:
12128: sub get_coursechange {
12129: my ($cdom,$cnum) = @_;
12130: if ($cdom eq '' || $cnum eq '') {
12131: return unless ($env{'request.course.id'});
12132: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12133: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12134: }
12135: my $hashid=$cdom.'_'.$cnum;
12136: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12137: if ((defined($cached)) && ($change ne '')) {
12138: return $change;
12139: } else {
12140: my %crshash;
12141: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12142: if ($crshash{'internal.contentchange'} eq '') {
12143: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12144: if ($change eq '') {
12145: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12146: $change = $crshash{'internal.created'};
12147: }
12148: } else {
12149: $change = $crshash{'internal.contentchange'};
12150: }
12151: my $cachetime = 600;
12152: &do_cache_new('crschange',$hashid,$change,$cachetime);
12153: }
12154: return $change;
12155: }
12156:
12157: sub devalidate_coursechange_cache {
12158: my ($cnum,$cdom)=@_;
12159: my $hashid=$cnum.':'.$cdom;
12160: &devalidate_cache_new('crschange',$hashid);
12161: }
12162:
12163: # ------------------------------------------------- Update symbolic store links
12164:
12165: sub symblist {
12166: my ($mapname,%newhash)=@_;
12167: $mapname=&deversion(&declutter($mapname));
12168: my %hash;
12169: if (($env{'request.course.fn'}) && (%newhash)) {
12170: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12171: &GDBM_WRCREAT(),0640)) {
12172: foreach my $url (keys(%newhash)) {
12173: next if ($url eq 'last_known'
12174: && $env{'form.no_update_last_known'});
12175: $hash{declutter($url)}=&encode_symb($mapname,
12176: $newhash{$url}->[1],
12177: $newhash{$url}->[0]);
12178: }
12179: if (untie(%hash)) {
12180: return 'ok';
12181: }
12182: }
12183: }
12184: return 'error';
12185: }
12186:
12187: # --------------------------------------------------------------- Verify a symb
12188:
12189: sub symbverify {
12190: my ($symb,$thisurl,$encstate)=@_;
12191: my $thisfn=$thisurl;
12192: $thisfn=&declutter($thisfn);
12193: # direct jump to resource in page or to a sequence - will construct own symbs
12194: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12195: # check URL part
12196: my ($map,$resid,$url)=&decode_symb($symb);
12197:
12198: unless ($url eq $thisfn) { return 0; }
12199:
12200: $symb=&symbclean($symb);
12201: $thisurl=&deversion($thisurl);
12202: $thisfn=&deversion($thisfn);
12203:
12204: my %bighash;
12205: my $okay=0;
12206:
12207: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12208: &GDBM_READER(),0640)) {
12209: my $noclutter;
12210: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12211: $thisurl =~ s/\?.+$//;
12212: if ($map =~ m{^uploaded/.+\.page$}) {
12213: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12214: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12215: $noclutter = 1;
12216: }
12217: }
12218: my $ids;
12219: if ($noclutter) {
12220: $ids=$bighash{'ids_'.$thisurl};
12221: } else {
12222: $ids=$bighash{'ids_'.&clutter($thisurl)};
12223: }
12224: unless ($ids) {
12225: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12226: $ids=$bighash{$idkey};
12227: }
12228: if ($ids) {
12229: # ------------------------------------------------------------------- Has ID(s)
12230: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12231: $symb =~ s/\?.+$//;
12232: }
12233: foreach my $id (split(/\,/,$ids)) {
12234: my ($mapid,$resid)=split(/\./,$id);
12235: if (
12236: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12237: eq $symb) {
12238: if (ref($encstate)) {
12239: $$encstate = $bighash{'encrypted_'.$id};
12240: }
12241: if (($env{'request.role.adv'}) ||
12242: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12243: ($thisurl eq '/adm/navmaps')) {
12244: $okay=1;
12245: last;
12246: }
12247: }
12248: }
12249: }
12250: untie(%bighash);
12251: }
12252: return $okay;
12253: }
12254:
12255: # --------------------------------------------------------------- Clean-up symb
12256:
12257: sub symbclean {
12258: my $symb=shift;
12259: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12260: # remove version from map
12261: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12262:
12263: # remove version from URL
12264: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12265:
12266: # remove wrapper
12267:
12268: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12269: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12270: return $symb;
12271: }
12272:
12273: # ---------------------------------------------- Split symb to find map and url
12274:
12275: sub encode_symb {
12276: my ($map,$resid,$url)=@_;
12277: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12278: }
12279:
12280: sub decode_symb {
12281: my $symb=shift;
12282: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12283: my ($map,$resid,$url)=split(/___/,$symb);
12284: return (&fixversion($map),$resid,&fixversion($url));
12285: }
12286:
12287: sub fixversion {
12288: my $fn=shift;
12289: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12290: my %bighash;
12291: my $uri=&clutter($fn);
12292: my $key=$env{'request.course.id'}.'_'.$uri;
12293: # is this cached?
12294: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12295: if (defined($cached)) { return $result; }
12296: # unfortunately not cached, or expired
12297: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12298: &GDBM_READER(),0640)) {
12299: if ($bighash{'version_'.$uri}) {
12300: my $version=$bighash{'version_'.$uri};
12301: unless (($version eq 'mostrecent') ||
12302: ($version==&getversion($uri))) {
12303: $uri=~s/\.(\w+)$/\.$version\.$1/;
12304: }
12305: }
12306: untie %bighash;
12307: }
12308: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12309: }
12310:
12311: sub deversion {
12312: my $url=shift;
12313: $url=~s/\.\d+\.(\w+)$/\.$1/;
12314: return $url;
12315: }
12316:
12317: # ------------------------------------------------------ Return symb list entry
12318:
12319: sub symbread {
12320: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12321: my $cache_str='request.symbread.cached.'.$thisfn;
12322: if (defined($env{$cache_str})) {
12323: if ($ignorecachednull) {
12324: return $env{$cache_str} unless ($env{$cache_str} eq '');
12325: } else {
12326: return $env{$cache_str};
12327: }
12328: }
12329: # no filename provided? try from environment
12330: unless ($thisfn) {
12331: if ($env{'request.symb'}) {
12332: return $env{$cache_str}=&symbclean($env{'request.symb'});
12333: }
12334: $thisfn=$env{'request.filename'};
12335: }
12336: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12337: # is that filename actually a symb? Verify, clean, and return
12338: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12339: if (&symbverify($thisfn,$1)) {
12340: return $env{$cache_str}=&symbclean($thisfn);
12341: }
12342: }
12343: $thisfn=declutter($thisfn);
12344: my %hash;
12345: my %bighash;
12346: my $syval='';
12347: if (($env{'request.course.fn'}) && ($thisfn)) {
12348: my $targetfn = $thisfn;
12349: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12350: $targetfn = 'adm/wrapper/'.$thisfn;
12351: }
12352: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12353: $targetfn=$1;
12354: }
12355: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12356: &GDBM_READER(),0640)) {
12357: $syval=$hash{$targetfn};
12358: untie(%hash);
12359: }
12360: # ---------------------------------------------------------- There was an entry
12361: if ($syval) {
12362: #unless ($syval=~/\_\d+$/) {
12363: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12364: #&appenv({'request.ambiguous' => $thisfn});
12365: #return $env{$cache_str}='';
12366: #}
12367: #$syval.=$1;
12368: #}
12369: } else {
12370: # ------------------------------------------------------- Was not in symb table
12371: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12372: &GDBM_READER(),0640)) {
12373: # ---------------------------------------------- Get ID(s) for current resource
12374: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12375: unless ($ids) {
12376: $ids=$bighash{'ids_/'.$thisfn};
12377: }
12378: unless ($ids) {
12379: # alias?
12380: $ids=$bighash{'mapalias_'.$thisfn};
12381: }
12382: if ($ids) {
12383: # ------------------------------------------------------------------- Has ID(s)
12384: my @possibilities=split(/\,/,$ids);
12385: if ($#possibilities==0) {
12386: # ----------------------------------------------- There is only one possibility
12387: my ($mapid,$resid)=split(/\./,$ids);
12388: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12389: $resid,$thisfn);
12390: if (ref($possibles) eq 'HASH') {
12391: $possibles->{$syval} = 1;
12392: }
12393: if ($checkforblock) {
12394: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12395: if (@blockers) {
12396: $syval = '';
12397: return;
12398: }
12399: }
12400: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12401: # ------------------------------------------ There is more than one possibility
12402: my $realpossible=0;
12403: foreach my $id (@possibilities) {
12404: my $file=$bighash{'src_'.$id};
12405: my $canaccess;
12406: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12407: $canaccess = 1;
12408: } else {
12409: $canaccess = &allowed('bre',$file);
12410: }
12411: if ($canaccess) {
12412: my ($mapid,$resid)=split(/\./,$id);
12413: if ($bighash{'map_type_'.$mapid} ne 'page') {
12414: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12415: $resid,$thisfn);
12416: if (ref($possibles) eq 'HASH') {
12417: $possibles->{$syval} = 1;
12418: }
12419: if ($checkforblock) {
12420: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12421: unless (@blockers > 0) {
12422: $syval = $poss_syval;
12423: $realpossible++;
12424: }
12425: } else {
12426: $syval = $poss_syval;
12427: $realpossible++;
12428: }
12429: }
12430: }
12431: }
12432: if ($realpossible!=1) { $syval=''; }
12433: } else {
12434: $syval='';
12435: }
12436: }
12437: untie(%bighash);
12438: }
12439: }
12440: if ($syval) {
12441: return $env{$cache_str}=$syval;
12442: }
12443: }
12444: &appenv({'request.ambiguous' => $thisfn});
12445: return $env{$cache_str}='';
12446: }
12447:
12448: # ---------------------------------------------------------- Return random seed
12449:
12450: sub numval {
12451: my $txt=shift;
12452: $txt=~tr/A-J/0-9/;
12453: $txt=~tr/a-j/0-9/;
12454: $txt=~tr/K-T/0-9/;
12455: $txt=~tr/k-t/0-9/;
12456: $txt=~tr/U-Z/0-5/;
12457: $txt=~tr/u-z/0-5/;
12458: $txt=~s/\D//g;
12459: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12460: return int($txt);
12461: }
12462:
12463: sub numval2 {
12464: my $txt=shift;
12465: $txt=~tr/A-J/0-9/;
12466: $txt=~tr/a-j/0-9/;
12467: $txt=~tr/K-T/0-9/;
12468: $txt=~tr/k-t/0-9/;
12469: $txt=~tr/U-Z/0-5/;
12470: $txt=~tr/u-z/0-5/;
12471: $txt=~s/\D//g;
12472: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12473: my $total;
12474: foreach my $val (@txts) { $total+=$val; }
12475: if ($_64bit) { if ($total > 2**32) { return -1; } }
12476: return int($total);
12477: }
12478:
12479: sub numval3 {
12480: use integer;
12481: my $txt=shift;
12482: $txt=~tr/A-J/0-9/;
12483: $txt=~tr/a-j/0-9/;
12484: $txt=~tr/K-T/0-9/;
12485: $txt=~tr/k-t/0-9/;
12486: $txt=~tr/U-Z/0-5/;
12487: $txt=~tr/u-z/0-5/;
12488: $txt=~s/\D//g;
12489: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12490: my $total;
12491: foreach my $val (@txts) { $total+=$val; }
12492: if ($_64bit) { $total=(($total<<32)>>32); }
12493: return $total;
12494: }
12495:
12496: sub digest {
12497: my ($data)=@_;
12498: my $digest=&Digest::MD5::md5($data);
12499: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12500: my ($e,$f);
12501: {
12502: use integer;
12503: $e=($a+$b);
12504: $f=($c+$d);
12505: if ($_64bit) {
12506: $e=(($e<<32)>>32);
12507: $f=(($f<<32)>>32);
12508: }
12509: }
12510: if (wantarray) {
12511: return ($e,$f);
12512: } else {
12513: my $g;
12514: {
12515: use integer;
12516: $g=($e+$f);
12517: if ($_64bit) {
12518: $g=(($g<<32)>>32);
12519: }
12520: }
12521: return $g;
12522: }
12523: }
12524:
12525: sub latest_rnd_algorithm_id {
12526: return '64bit5';
12527: }
12528:
12529: sub get_rand_alg {
12530: my ($courseid)=@_;
12531: if (!$courseid) { $courseid=(&whichuser())[1]; }
12532: if ($courseid) {
12533: return $env{"course.$courseid.rndseed"};
12534: }
12535: return &latest_rnd_algorithm_id();
12536: }
12537:
12538: sub validCODE {
12539: my ($CODE)=@_;
12540: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12541: return 0;
12542: }
12543:
12544: sub getCODE {
12545: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12546: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12547: defined($Apache::lonhomework::parsing_a_task) ) &&
12548: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12549: return $Apache::lonhomework::history{'resource.CODE'};
12550: }
12551: return undef;
12552: }
12553: #
12554: # Determines the random seed for a specific context:
12555: #
12556: # parameters:
12557: # symb - in course context the symb for the seed.
12558: # course_id - The course id of the form domain_coursenum.
12559: # domain - Domain for the user.
12560: # course - Course for the user.
12561: # cenv - environment of the course.
12562: #
12563: # NOTE:
12564: # All parameters are picked out of the environment if missing
12565: # or not defined.
12566: # If a symb cannot be determined the current time is used instead.
12567: #
12568: # For a given well defined symb, courside, domain, username,
12569: # and course environment, the seed is reproducible.
12570: #
12571: sub rndseed {
12572: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12573: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12574: if (!defined($symb)) {
12575: unless ($symb=$wsymb) { return time; }
12576: }
12577: if (!defined $courseid) {
12578: $courseid=$wcourseid;
12579: }
12580: if (!defined $domain) { $domain=$wdomain; }
12581: if (!defined $username) { $username=$wusername }
12582:
12583: my $which;
12584: if (defined($cenv->{'rndseed'})) {
12585: $which = $cenv->{'rndseed'};
12586: } else {
12587: $which =&get_rand_alg($courseid);
12588: }
12589: if (defined(&getCODE())) {
12590:
12591: if ($which eq '64bit5') {
12592: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12593: } elsif ($which eq '64bit4') {
12594: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12595: } else {
12596: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12597: }
12598: } elsif ($which eq '64bit5') {
12599: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12600: } elsif ($which eq '64bit4') {
12601: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12602: } elsif ($which eq '64bit3') {
12603: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12604: } elsif ($which eq '64bit2') {
12605: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12606: } elsif ($which eq '64bit') {
12607: return &rndseed_64bit($symb,$courseid,$domain,$username);
12608: }
12609: return &rndseed_32bit($symb,$courseid,$domain,$username);
12610: }
12611:
12612: sub rndseed_32bit {
12613: my ($symb,$courseid,$domain,$username)=@_;
12614: {
12615: use integer;
12616: my $symbchck=unpack("%32C*",$symb) << 27;
12617: my $symbseed=numval($symb) << 22;
12618: my $namechck=unpack("%32C*",$username) << 17;
12619: my $nameseed=numval($username) << 12;
12620: my $domainseed=unpack("%32C*",$domain) << 7;
12621: my $courseseed=unpack("%32C*",$courseid);
12622: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12623: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12624: #&logthis("rndseed :$num:$symb");
12625: if ($_64bit) { $num=(($num<<32)>>32); }
12626: return $num;
12627: }
12628: }
12629:
12630: sub rndseed_64bit {
12631: my ($symb,$courseid,$domain,$username)=@_;
12632: {
12633: use integer;
12634: my $symbchck=unpack("%32S*",$symb) << 21;
12635: my $symbseed=numval($symb) << 10;
12636: my $namechck=unpack("%32S*",$username);
12637:
12638: my $nameseed=numval($username) << 21;
12639: my $domainseed=unpack("%32S*",$domain) << 10;
12640: my $courseseed=unpack("%32S*",$courseid);
12641:
12642: my $num1=$symbchck+$symbseed+$namechck;
12643: my $num2=$nameseed+$domainseed+$courseseed;
12644: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12645: #&logthis("rndseed :$num:$symb");
12646: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12647: return "$num1,$num2";
12648: }
12649: }
12650:
12651: sub rndseed_64bit2 {
12652: my ($symb,$courseid,$domain,$username)=@_;
12653: {
12654: use integer;
12655: # strings need to be an even # of cahracters long, it it is odd the
12656: # last characters gets thrown away
12657: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12658: my $symbseed=numval($symb) << 10;
12659: my $namechck=unpack("%32S*",$username.' ');
12660:
12661: my $nameseed=numval($username) << 21;
12662: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12663: my $courseseed=unpack("%32S*",$courseid.' ');
12664:
12665: my $num1=$symbchck+$symbseed+$namechck;
12666: my $num2=$nameseed+$domainseed+$courseseed;
12667: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12668: #&logthis("rndseed :$num:$symb");
12669: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12670: return "$num1,$num2";
12671: }
12672: }
12673:
12674: sub rndseed_64bit3 {
12675: my ($symb,$courseid,$domain,$username)=@_;
12676: {
12677: use integer;
12678: # strings need to be an even # of cahracters long, it it is odd the
12679: # last characters gets thrown away
12680: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12681: my $symbseed=numval2($symb) << 10;
12682: my $namechck=unpack("%32S*",$username.' ');
12683:
12684: my $nameseed=numval2($username) << 21;
12685: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12686: my $courseseed=unpack("%32S*",$courseid.' ');
12687:
12688: my $num1=$symbchck+$symbseed+$namechck;
12689: my $num2=$nameseed+$domainseed+$courseseed;
12690: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12691: #&logthis("rndseed :$num1:$num2:$_64bit");
12692: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12693:
12694: return "$num1:$num2";
12695: }
12696: }
12697:
12698: sub rndseed_64bit4 {
12699: my ($symb,$courseid,$domain,$username)=@_;
12700: {
12701: use integer;
12702: # strings need to be an even # of cahracters long, it it is odd the
12703: # last characters gets thrown away
12704: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12705: my $symbseed=numval3($symb) << 10;
12706: my $namechck=unpack("%32S*",$username.' ');
12707:
12708: my $nameseed=numval3($username) << 21;
12709: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12710: my $courseseed=unpack("%32S*",$courseid.' ');
12711:
12712: my $num1=$symbchck+$symbseed+$namechck;
12713: my $num2=$nameseed+$domainseed+$courseseed;
12714: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12715: #&logthis("rndseed :$num1:$num2:$_64bit");
12716: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12717:
12718: return "$num1:$num2";
12719: }
12720: }
12721:
12722: sub rndseed_64bit5 {
12723: my ($symb,$courseid,$domain,$username)=@_;
12724: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12725: return "$num1:$num2";
12726: }
12727:
12728: sub rndseed_CODE_64bit {
12729: my ($symb,$courseid,$domain,$username)=@_;
12730: {
12731: use integer;
12732: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12733: my $symbseed=numval2($symb);
12734: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12735: my $CODEseed=numval(&getCODE());
12736: my $courseseed=unpack("%32S*",$courseid.' ');
12737: my $num1=$symbseed+$CODEchck;
12738: my $num2=$CODEseed+$courseseed+$symbchck;
12739: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12740: #&logthis("rndseed :$num1:$num2:$symb");
12741: if ($_64bit) { $num1=(($num1<<32)>>32); }
12742: if ($_64bit) { $num2=(($num2<<32)>>32); }
12743: return "$num1:$num2";
12744: }
12745: }
12746:
12747: sub rndseed_CODE_64bit4 {
12748: my ($symb,$courseid,$domain,$username)=@_;
12749: {
12750: use integer;
12751: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12752: my $symbseed=numval3($symb);
12753: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12754: my $CODEseed=numval3(&getCODE());
12755: my $courseseed=unpack("%32S*",$courseid.' ');
12756: my $num1=$symbseed+$CODEchck;
12757: my $num2=$CODEseed+$courseseed+$symbchck;
12758: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12759: #&logthis("rndseed :$num1:$num2:$symb");
12760: if ($_64bit) { $num1=(($num1<<32)>>32); }
12761: if ($_64bit) { $num2=(($num2<<32)>>32); }
12762: return "$num1:$num2";
12763: }
12764: }
12765:
12766: sub rndseed_CODE_64bit5 {
12767: my ($symb,$courseid,$domain,$username)=@_;
12768: my $code = &getCODE();
12769: my ($num1,$num2)=&digest("$symb,$courseid,$code");
12770: return "$num1:$num2";
12771: }
12772:
12773: sub setup_random_from_rndseed {
12774: my ($rndseed)=@_;
12775: if ($rndseed =~/([,:])/) {
12776: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
12777: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
12778: &Math::Random::random_set_seed_from_phrase($rndseed);
12779: } else {
12780: &Math::Random::random_set_seed($num1,$num2);
12781: }
12782: } else {
12783: &Math::Random::random_set_seed_from_phrase($rndseed);
12784: }
12785: }
12786:
12787: sub latest_receipt_algorithm_id {
12788: return 'receipt3';
12789: }
12790:
12791: sub recunique {
12792: my $fucourseid=shift;
12793: my $unique;
12794: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
12795: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12796: $unique=$env{"course.$fucourseid.internal.encseed"};
12797: } else {
12798: $unique=$perlvar{'lonReceipt'};
12799: }
12800: return unpack("%32C*",$unique);
12801: }
12802:
12803: sub recprefix {
12804: my $fucourseid=shift;
12805: my $prefix;
12806: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
12807: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12808: $prefix=$env{"course.$fucourseid.internal.encpref"};
12809: } else {
12810: $prefix=$perlvar{'lonHostID'};
12811: }
12812: return unpack("%32C*",$prefix);
12813: }
12814:
12815: sub ireceipt {
12816: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
12817:
12818: my $return =&recprefix($fucourseid).'-';
12819:
12820: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12821: $env{'request.state'} eq 'construct') {
12822: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12823: return $return;
12824: }
12825:
12826: my $cuname=unpack("%32C*",$funame);
12827: my $cudom=unpack("%32C*",$fudom);
12828: my $cucourseid=unpack("%32C*",$fucourseid);
12829: my $cusymb=unpack("%32C*",$fusymb);
12830: my $cunique=&recunique($fucourseid);
12831: my $cpart=unpack("%32S*",$part);
12832: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12833:
12834: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12835:
12836: $return.= ($cunique%$cuname+
12837: $cunique%$cudom+
12838: $cusymb%$cuname+
12839: $cusymb%$cudom+
12840: $cucourseid%$cuname+
12841: $cucourseid%$cudom+
12842: $cpart%$cuname+
12843: $cpart%$cudom);
12844: } else {
12845: $return.= ($cunique%$cuname+
12846: $cunique%$cudom+
12847: $cusymb%$cuname+
12848: $cusymb%$cudom+
12849: $cucourseid%$cuname+
12850: $cucourseid%$cudom);
12851: }
12852: return $return;
12853: }
12854:
12855: sub receipt {
12856: my ($part)=@_;
12857: my ($symb,$courseid,$domain,$name) = &whichuser();
12858: return &ireceipt($name,$domain,$courseid,$symb,$part);
12859: }
12860:
12861: sub whichuser {
12862: my ($passedsymb)=@_;
12863: my ($symb,$courseid,$domain,$name,$publicuser);
12864: if (defined($env{'form.grade_symb'})) {
12865: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12866: my $allowed=&allowed('vgr',$tmp_courseid);
12867: if (!$allowed &&
12868: exists($env{'request.course.sec'}) &&
12869: $env{'request.course.sec'} !~ /^\s*$/) {
12870: $allowed=&allowed('vgr',$tmp_courseid.
12871: '/'.$env{'request.course.sec'});
12872: }
12873: if ($allowed) {
12874: ($symb)=&get_env_multiple('form.grade_symb');
12875: $courseid=$tmp_courseid;
12876: ($domain)=&get_env_multiple('form.grade_domain');
12877: ($name)=&get_env_multiple('form.grade_username');
12878: return ($symb,$courseid,$domain,$name,$publicuser);
12879: }
12880: }
12881: if (!$passedsymb) {
12882: $symb=&symbread();
12883: } else {
12884: $symb=$passedsymb;
12885: }
12886: $courseid=$env{'request.course.id'};
12887: $domain=$env{'user.domain'};
12888: $name=$env{'user.name'};
12889: if ($name eq 'public' && $domain eq 'public') {
12890: if (!defined($env{'form.username'})) {
12891: $env{'form.username'}.=time.rand(10000000);
12892: }
12893: $name.=$env{'form.username'};
12894: }
12895: return ($symb,$courseid,$domain,$name,$publicuser);
12896:
12897: }
12898:
12899: # ------------------------------------------------------------ Serves up a file
12900: # returns either the contents of the file or
12901: # -1 if the file doesn't exist
12902: #
12903: # if the target is a file that was uploaded via DOCS,
12904: # a check will be made to see if a current copy exists on the local server,
12905: # if it does this will be served, otherwise a copy will be retrieved from
12906: # the home server for the course and stored in /home/httpd/html/userfiles on
12907: # the local server.
12908:
12909: sub getfile {
12910: my ($file) = @_;
12911: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12912: &repcopy($file);
12913: return &readfile($file);
12914: }
12915:
12916: sub repcopy_userfile {
12917: my ($file)=@_;
12918: my $londocroot = $perlvar{'lonDocRoot'};
12919: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12920: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12921: my ($cdom,$cnum,$filename) =
12922: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12923: my $uri="/uploaded/$cdom/$cnum/$filename";
12924: if (-e "$file") {
12925: # we already have a local copy, check it out
12926: my @fileinfo = stat($file);
12927: my $rtncode;
12928: my $info;
12929: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12930: if ($lwpresp ne 'ok') {
12931: # there is no such file anymore, even though we had a local copy
12932: if ($rtncode eq '404') {
12933: unlink($file);
12934: }
12935: return -1;
12936: }
12937: if ($info < $fileinfo[9]) {
12938: # nice, the file we have is up-to-date, just say okay
12939: return 'ok';
12940: } else {
12941: # the file is outdated, get rid of it
12942: unlink($file);
12943: }
12944: }
12945: # one way or the other, at this point, we don't have the file
12946: # construct the correct path for the file
12947: my @parts = ($cdom,$cnum);
12948: if ($filename =~ m|^(.+)/[^/]+$|) {
12949: push @parts, split(/\//,$1);
12950: }
12951: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12952: foreach my $part (@parts) {
12953: $path .= '/'.$part;
12954: if (!-e $path) {
12955: mkdir($path,0770);
12956: }
12957: }
12958: # now the path exists for sure
12959: # get a user agent
12960: my $transferfile=$file.'.in.transfer';
12961: # FIXME: this should flock
12962: if (-e $transferfile) { return 'ok'; }
12963: my $request;
12964: $uri=~s/^\///;
12965: my $homeserver = &homeserver($cnum,$cdom);
12966: my $protocol = $protocol{$homeserver};
12967: $protocol = 'http' if ($protocol ne 'https');
12968: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12969: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
12970: # did it work?
12971: if ($response->is_error()) {
12972: unlink($transferfile);
12973: &logthis("Userfile repcopy failed for $uri");
12974: return -1;
12975: }
12976: # worked, rename the transfer file
12977: rename($transferfile,$file);
12978: return 'ok';
12979: }
12980:
12981: sub tokenwrapper {
12982: my $uri=shift;
12983: $uri=~s|^https?\://([^/]+)||;
12984: $uri=~s|^/||;
12985: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12986: my $token=$1;
12987: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12988: if ($udom && $uname && $file) {
12989: $file=~s|(\?\.*)*$||;
12990: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12991: my $homeserver = &homeserver($uname,$udom);
12992: my $protocol = $protocol{$homeserver};
12993: $protocol = 'http' if ($protocol ne 'https');
12994: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12995: (($uri=~/\?/)?'&':'?').'token='.$token.
12996: '&tokenissued='.$perlvar{'lonHostID'};
12997: } else {
12998: return '/adm/notfound.html';
12999: }
13000: }
13001:
13002: # call with reqtype HEAD: get last modification time
13003: # call with reqtype GET: get the file contents
13004: # Do not call this with reqtype GET for large files! It loads everything into memory
13005: #
13006: sub getuploaded {
13007: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13008: $uri=~s/^\///;
13009: my $homeserver = &homeserver($cnum,$cdom);
13010: my $protocol = $protocol{$homeserver};
13011: $protocol = 'http' if ($protocol ne 'https');
13012: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13013: my $request=new HTTP::Request($reqtype,$uri);
13014: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13015: $$rtncode = $response->code;
13016: if (! $response->is_success()) {
13017: return 'failed';
13018: }
13019: if ($reqtype eq 'HEAD') {
13020: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13021: } elsif ($reqtype eq 'GET') {
13022: $$info = $response->content;
13023: }
13024: return 'ok';
13025: }
13026:
13027: sub readfile {
13028: my $file = shift;
13029: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13030: my $fh;
13031: open($fh,"<$file");
13032: my $a='';
13033: while (my $line = <$fh>) { $a .= $line; }
13034: return $a;
13035: }
13036:
13037: sub filelocation {
13038: my ($dir,$file) = @_;
13039: my $location;
13040: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13041:
13042: if ($file =~ m-^/adm/-) {
13043: $file=~s-^/adm/wrapper/-/-;
13044: $file=~s-^/adm/coursedocs/showdoc/-/-;
13045: }
13046:
13047: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13048: $location = $file;
13049: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13050: my ($udom,$uname,$filename)=
13051: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13052: my $home=&homeserver($uname,$udom);
13053: my $is_me=0;
13054: my @ids=¤t_machine_ids();
13055: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13056: if ($is_me) {
13057: $location=propath($udom,$uname).'/userfiles/'.$filename;
13058: } else {
13059: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13060: $udom.'/'.$uname.'/'.$filename;
13061: }
13062: } elsif ($file =~ m-^/adm/-) {
13063: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13064: } else {
13065: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13066: $file=~s:^/(res|priv)/:/:;
13067: my $space=$1;
13068: if ( !( $file =~ m:^/:) ) {
13069: $location = $dir. '/'.$file;
13070: } else {
13071: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13072: }
13073: }
13074: $location=~s://+:/:g; # remove duplicate /
13075: while ($location=~m{/\.\./}) {
13076: if ($location =~ m{/[^/]+/\.\./}) {
13077: $location=~ s{/[^/]+/\.\./}{/}g;
13078: } else {
13079: $location=~ s{/\.\./}{/}g;
13080: }
13081: } #remove dir/..
13082: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13083: return $location;
13084: }
13085:
13086: sub hreflocation {
13087: my ($dir,$file)=@_;
13088: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13089: $file=filelocation($dir,$file);
13090: } elsif ($file=~m-^/adm/-) {
13091: $file=~s-^/adm/wrapper/-/-;
13092: $file=~s-^/adm/coursedocs/showdoc/-/-;
13093: }
13094: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13095: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13096: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13097: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13098: {/uploaded/$1/$2/}x;
13099: }
13100: if ($file=~ m{^/userfiles/}) {
13101: $file =~ s{^/userfiles/}{/uploaded/};
13102: }
13103: return $file;
13104: }
13105:
13106:
13107:
13108:
13109:
13110: sub current_machine_domains {
13111: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13112: }
13113:
13114: sub machine_domains {
13115: my ($hostname) = @_;
13116: my @domains;
13117: my %hostname = &all_hostnames();
13118: while( my($id, $name) = each(%hostname)) {
13119: # &logthis("-$id-$name-$hostname-");
13120: if ($hostname eq $name) {
13121: push(@domains,&host_domain($id));
13122: }
13123: }
13124: return @domains;
13125: }
13126:
13127: sub current_machine_ids {
13128: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13129: }
13130:
13131: sub machine_ids {
13132: my ($hostname) = @_;
13133: $hostname ||= &hostname($perlvar{'lonHostID'});
13134: my @ids;
13135: my %name_to_host = &all_names();
13136: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13137: return @{ $name_to_host{$hostname} };
13138: }
13139: return;
13140: }
13141:
13142: sub additional_machine_domains {
13143: my @domains;
13144: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
13145: while( my $line = <$fh>) {
13146: $line =~ s/\s//g;
13147: push(@domains,$line);
13148: }
13149: return @domains;
13150: }
13151:
13152: sub default_login_domain {
13153: my $domain = $perlvar{'lonDefDomain'};
13154: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13155: foreach my $posdom (¤t_machine_domains(),
13156: &additional_machine_domains()) {
13157: if (lc($posdom) eq lc($testdomain)) {
13158: $domain=$posdom;
13159: last;
13160: }
13161: }
13162: return $domain;
13163: }
13164:
13165: # ------------------------------------------------------------- Declutters URLs
13166:
13167: sub declutter {
13168: my $thisfn=shift;
13169: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13170: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13171: $thisfn=~s{^/home/httpd/html}{};
13172: }
13173: $thisfn=~s/^\///;
13174: $thisfn=~s|^adm/wrapper/||;
13175: $thisfn=~s|^adm/coursedocs/showdoc/||;
13176: $thisfn=~s/^res\///;
13177: $thisfn=~s/^priv\///;
13178: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13179: $thisfn=~s/\?.+$//;
13180: }
13181: return $thisfn;
13182: }
13183:
13184: # ------------------------------------------------------------- Clutter up URLs
13185:
13186: sub clutter {
13187: my $thisfn='/'.&declutter(shift);
13188: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13189: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13190: $thisfn='/res'.$thisfn;
13191: }
13192: if ($thisfn !~m|^/adm|) {
13193: if ($thisfn =~ m|^/ext/|) {
13194: $thisfn='/adm/wrapper'.$thisfn;
13195: } else {
13196: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13197: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13198: if ($embstyle eq 'ssi'
13199: || ($embstyle eq 'hdn')
13200: || ($embstyle eq 'rat')
13201: || ($embstyle eq 'prv')
13202: || ($embstyle eq 'ign')) {
13203: #do nothing with these
13204: } elsif (($embstyle eq 'img')
13205: || ($embstyle eq 'emb')
13206: || ($embstyle eq 'wrp')) {
13207: $thisfn='/adm/wrapper'.$thisfn;
13208: } elsif ($embstyle eq 'unk'
13209: && $thisfn!~/\.(sequence|page)$/) {
13210: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13211: } else {
13212: # &logthis("Got a blank emb style");
13213: }
13214: }
13215: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13216: $thisfn='/adm/wrapper'.$thisfn;
13217: }
13218: return $thisfn;
13219: }
13220:
13221: sub clutter_with_no_wrapper {
13222: my $uri = &clutter(shift);
13223: if ($uri =~ m-^/adm/-) {
13224: $uri =~ s-^/adm/wrapper/-/-;
13225: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13226: }
13227: return $uri;
13228: }
13229:
13230: sub freeze_escape {
13231: my ($value)=@_;
13232: if (ref($value)) {
13233: $value=&nfreeze($value);
13234: return '__FROZEN__'.&escape($value);
13235: }
13236: return &escape($value);
13237: }
13238:
13239:
13240: sub thaw_unescape {
13241: my ($value)=@_;
13242: if ($value =~ /^__FROZEN__/) {
13243: substr($value,0,10,undef);
13244: $value=&unescape($value);
13245: return &thaw($value);
13246: }
13247: return &unescape($value);
13248: }
13249:
13250: sub correct_line_ends {
13251: my ($result)=@_;
13252: $$result =~s/\r\n/\n/mg;
13253: $$result =~s/\r/\n/mg;
13254: }
13255: # ================================================================ Main Program
13256:
13257: sub goodbye {
13258: &logthis("Starting Shut down");
13259: #not converted to using infrastruture and probably shouldn't be
13260: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13261: #converted
13262: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13263: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13264: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13265: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13266: #1.1 only
13267: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13268: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13269: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13270: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13271: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13272: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13273: &logthis(sprintf("%-20s is %s",'hits',$hits));
13274: &flushcourselogs();
13275: &logthis("Shutting down");
13276: }
13277:
13278: sub get_dns {
13279: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13280: if (!$ignore_cache) {
13281: my ($content,$cached)=
13282: &Apache::lonnet::is_cached_new('dns',$url);
13283: if ($cached) {
13284: &$func($content,$hashref);
13285: return;
13286: }
13287: }
13288:
13289: my %alldns;
13290: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13291: foreach my $dns (<$config>) {
13292: next if ($dns !~ /^\^(\S*)/x);
13293: my $line = $1;
13294: my ($host,$protocol) = split(/:/,$line);
13295: if ($protocol ne 'https') {
13296: $protocol = 'http';
13297: }
13298: $alldns{$host} = $protocol;
13299: }
13300: while (%alldns) {
13301: my ($dns) = sort { $b cmp $a } keys(%alldns);
13302: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13303: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13304: delete($alldns{$dns});
13305: next if ($response->is_error());
13306: my @content = split("\n",$response->content);
13307: unless ($nocache) {
13308: &do_cache_new('dns',$url,\@content,30*24*60*60);
13309: }
13310: &$func(\@content,$hashref);
13311: return;
13312: }
13313: close($config);
13314: my $which = (split('/',$url))[3];
13315: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13316: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
13317: my @content = <$config>;
13318: &$func(\@content,$hashref);
13319: return;
13320: }
13321:
13322: # ------------------------------------------------------Get DNS checksums file
13323: sub parse_dns_checksums_tab {
13324: my ($lines,$hashref) = @_;
13325: my $lonhost = $perlvar{'lonHostID'};
13326: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13327: my $loncaparev = &get_server_loncaparev($machine_dom);
13328: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13329: my $webconfdir = '/etc/httpd/conf';
13330: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13331: $webconfdir = '/etc/apache2';
13332: } elsif ($distro =~ /^sles(\d+)$/) {
13333: if ($1 >= 10) {
13334: $webconfdir = '/etc/apache2';
13335: }
13336: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13337: if ($1 >= 10.0) {
13338: $webconfdir = '/etc/apache2';
13339: }
13340: }
13341: my ($release,$timestamp) = split(/\-/,$loncaparev);
13342: my (%chksum,%revnum);
13343: if (ref($lines) eq 'ARRAY') {
13344: chomp(@{$lines});
13345: my $version = shift(@{$lines});
13346: if ($version eq $release) {
13347: foreach my $line (@{$lines}) {
13348: my ($file,$version,$shasum) = split(/,/,$line);
13349: if ($file =~ m{^/etc/httpd/conf}) {
13350: if ($webconfdir eq '/etc/apache2') {
13351: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13352: }
13353: }
13354: $chksum{$file} = $shasum;
13355: $revnum{$file} = $version;
13356: }
13357: if (ref($hashref) eq 'HASH') {
13358: %{$hashref} = (
13359: sums => \%chksum,
13360: versions => \%revnum,
13361: );
13362: }
13363: }
13364: }
13365: return;
13366: }
13367:
13368: sub fetch_dns_checksums {
13369: my %checksums;
13370: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13371: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13372: my ($release,$timestamp) = split(/\-/,$loncaparev);
13373: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13374: \%checksums);
13375: return \%checksums;
13376: }
13377:
13378: # ------------------------------------------------------------ Read domain file
13379: {
13380: my $loaded;
13381: my %domain;
13382:
13383: sub parse_domain_tab {
13384: my ($lines) = @_;
13385: foreach my $line (@$lines) {
13386: next if ($line =~ /^(\#|\s*$ )/x);
13387:
13388: chomp($line);
13389: my ($name,@elements) = split(/:/,$line,9);
13390: my %this_domain;
13391: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13392: 'lang_def', 'city', 'longi', 'lati',
13393: 'primary') {
13394: $this_domain{$field} = shift(@elements);
13395: }
13396: $domain{$name} = \%this_domain;
13397: }
13398: }
13399:
13400: sub reset_domain_info {
13401: undef($loaded);
13402: undef(%domain);
13403: }
13404:
13405: sub load_domain_tab {
13406: my ($ignore_cache,$nocache) = @_;
13407: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13408: my $fh;
13409: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
13410: my @lines = <$fh>;
13411: &parse_domain_tab(\@lines);
13412: }
13413: close($fh);
13414: $loaded = 1;
13415: }
13416:
13417: sub domain {
13418: &load_domain_tab() if (!$loaded);
13419:
13420: my ($name,$what) = @_;
13421: return if ( !exists($domain{$name}) );
13422:
13423: if (!$what) {
13424: return $domain{$name}{'description'};
13425: }
13426: return $domain{$name}{$what};
13427: }
13428:
13429: sub domain_info {
13430: &load_domain_tab() if (!$loaded);
13431: return %domain;
13432: }
13433:
13434: }
13435:
13436:
13437: # ------------------------------------------------------------- Read hosts file
13438: {
13439: my %hostname;
13440: my %hostdom;
13441: my %libserv;
13442: my $loaded;
13443: my %name_to_host;
13444: my %internetdom;
13445: my %LC_dns_serv;
13446:
13447: sub parse_hosts_tab {
13448: my ($file) = @_;
13449: foreach my $configline (@$file) {
13450: next if ($configline =~ /^(\#|\s*$ )/x);
13451: chomp($configline);
13452: if ($configline =~ /^\^/) {
13453: if ($configline =~ /^\^([\w.\-]+)/) {
13454: $LC_dns_serv{$1} = 1;
13455: }
13456: next;
13457: }
13458: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13459: $name=~s/\s//g;
13460: if ($id && $domain && $role && $name) {
13461: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13462: my $curr = $hostname{$id};
13463: my $skip;
13464: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13465: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13466: $skip = 1;
13467: } else {
13468: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13469: }
13470: }
13471: unless ($skip) {
13472: push(@{$name_to_host{$name}},$id);
13473: }
13474: } else {
13475: push(@{$name_to_host{$name}},$id);
13476: }
13477: $hostname{$id}=$name;
13478: $hostdom{$id}=$domain;
13479: if ($role eq 'library') { $libserv{$id}=$name; }
13480: if (defined($protocol)) {
13481: if ($protocol eq 'https') {
13482: $protocol{$id} = $protocol;
13483: } else {
13484: $protocol{$id} = 'http';
13485: }
13486: } else {
13487: $protocol{$id} = 'http';
13488: }
13489: if (defined($intdom)) {
13490: $internetdom{$id} = $intdom;
13491: }
13492: }
13493: }
13494: }
13495:
13496: sub reset_hosts_info {
13497: &purge_remembered();
13498: &reset_domain_info();
13499: &reset_hosts_ip_info();
13500: undef(%internetdom);
13501: undef(%name_to_host);
13502: undef(%hostname);
13503: undef(%hostdom);
13504: undef(%libserv);
13505: undef($loaded);
13506: }
13507:
13508: sub load_hosts_tab {
13509: my ($ignore_cache,$nocache) = @_;
13510: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13511: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13512: my @config = <$config>;
13513: &parse_hosts_tab(\@config);
13514: close($config);
13515: $loaded=1;
13516: }
13517:
13518: sub hostname {
13519: &load_hosts_tab() if (!$loaded);
13520:
13521: my ($lonid) = @_;
13522: return $hostname{$lonid};
13523: }
13524:
13525: sub all_hostnames {
13526: &load_hosts_tab() if (!$loaded);
13527:
13528: return %hostname;
13529: }
13530:
13531: sub all_names {
13532: my ($ignore_cache,$nocache) = @_;
13533: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13534:
13535: return %name_to_host;
13536: }
13537:
13538: sub all_host_domain {
13539: &load_hosts_tab() if (!$loaded);
13540: return %hostdom;
13541: }
13542:
13543: sub all_host_intdom {
13544: &load_hosts_tab() if (!$loaded);
13545: return %internetdom;
13546: }
13547:
13548: sub is_library {
13549: &load_hosts_tab() if (!$loaded);
13550:
13551: return exists($libserv{$_[0]});
13552: }
13553:
13554: sub all_library {
13555: &load_hosts_tab() if (!$loaded);
13556:
13557: return %libserv;
13558: }
13559:
13560: sub unique_library {
13561: #2x reverse removes all hostnames that appear more than once
13562: my %unique = reverse &all_library();
13563: return reverse %unique;
13564: }
13565:
13566: sub get_servers {
13567: &load_hosts_tab() if (!$loaded);
13568:
13569: my ($domain,$type) = @_;
13570: my %possible_hosts = ($type eq 'library') ? %libserv
13571: : %hostname;
13572: my %result;
13573: if (ref($domain) eq 'ARRAY') {
13574: while ( my ($host,$hostname) = each(%possible_hosts)) {
13575: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13576: $result{$host} = $hostname;
13577: }
13578: }
13579: } else {
13580: while ( my ($host,$hostname) = each(%possible_hosts)) {
13581: if ($hostdom{$host} eq $domain) {
13582: $result{$host} = $hostname;
13583: }
13584: }
13585: }
13586: return %result;
13587: }
13588:
13589: sub get_unique_servers {
13590: my %unique = reverse &get_servers(@_);
13591: return reverse %unique;
13592: }
13593:
13594: sub host_domain {
13595: &load_hosts_tab() if (!$loaded);
13596:
13597: my ($lonid) = @_;
13598: return $hostdom{$lonid};
13599: }
13600:
13601: sub all_domains {
13602: &load_hosts_tab() if (!$loaded);
13603:
13604: my %seen;
13605: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13606: return @uniq;
13607: }
13608:
13609: sub internet_dom {
13610: &load_hosts_tab() if (!$loaded);
13611:
13612: my ($lonid) = @_;
13613: return $internetdom{$lonid};
13614: }
13615:
13616: sub is_LC_dns {
13617: &load_hosts_tab() if (!$loaded);
13618:
13619: my ($hostname) = @_;
13620: return exists($LC_dns_serv{$hostname});
13621: }
13622:
13623: }
13624:
13625: {
13626: my %iphost;
13627: my %name_to_ip;
13628: my %lonid_to_ip;
13629:
13630: sub get_hosts_from_ip {
13631: my ($ip) = @_;
13632: my %iphosts = &get_iphost();
13633: if (ref($iphosts{$ip})) {
13634: return @{$iphosts{$ip}};
13635: }
13636: return;
13637: }
13638:
13639: sub reset_hosts_ip_info {
13640: undef(%iphost);
13641: undef(%name_to_ip);
13642: undef(%lonid_to_ip);
13643: }
13644:
13645: sub get_host_ip {
13646: my ($lonid) = @_;
13647: if (exists($lonid_to_ip{$lonid})) {
13648: return $lonid_to_ip{$lonid};
13649: }
13650: my $name=&hostname($lonid);
13651: my $ip = gethostbyname($name);
13652: return if (!$ip || length($ip) ne 4);
13653: $ip=inet_ntoa($ip);
13654: $name_to_ip{$name} = $ip;
13655: $lonid_to_ip{$lonid} = $ip;
13656: return $ip;
13657: }
13658:
13659: sub get_iphost {
13660: my ($ignore_cache,$nocache) = @_;
13661:
13662: if (!$ignore_cache) {
13663: if (%iphost) {
13664: return %iphost;
13665: }
13666: my ($ip_info,$cached)=
13667: &Apache::lonnet::is_cached_new('iphost','iphost');
13668: if ($cached) {
13669: %iphost = %{$ip_info->[0]};
13670: %name_to_ip = %{$ip_info->[1]};
13671: %lonid_to_ip = %{$ip_info->[2]};
13672: return %iphost;
13673: }
13674: }
13675:
13676: # get yesterday's info for fallback
13677: my %old_name_to_ip;
13678: my ($ip_info,$cached)=
13679: &Apache::lonnet::is_cached_new('iphost','iphost');
13680: if ($cached) {
13681: %old_name_to_ip = %{$ip_info->[1]};
13682: }
13683:
13684: my %name_to_host = &all_names($ignore_cache,$nocache);
13685: foreach my $name (keys(%name_to_host)) {
13686: my $ip;
13687: if (!exists($name_to_ip{$name})) {
13688: $ip = gethostbyname($name);
13689: if (!$ip || length($ip) ne 4) {
13690: if (defined($old_name_to_ip{$name})) {
13691: $ip = $old_name_to_ip{$name};
13692: &logthis("Can't find $name defaulting to old $ip");
13693: } else {
13694: &logthis("Name $name no IP found");
13695: next;
13696: }
13697: } else {
13698: $ip=inet_ntoa($ip);
13699: }
13700: $name_to_ip{$name} = $ip;
13701: } else {
13702: $ip = $name_to_ip{$name};
13703: }
13704: foreach my $id (@{ $name_to_host{$name} }) {
13705: $lonid_to_ip{$id} = $ip;
13706: }
13707: push(@{$iphost{$ip}},@{$name_to_host{$name}});
13708: }
13709: unless ($nocache) {
13710: &do_cache_new('iphost','iphost',
13711: [\%iphost,\%name_to_ip,\%lonid_to_ip],
13712: 48*60*60);
13713: }
13714:
13715: return %iphost;
13716: }
13717:
13718: #
13719: # Given a DNS returns the loncapa host name for that DNS
13720: #
13721: sub host_from_dns {
13722: my ($dns) = @_;
13723: my @hosts;
13724: my $ip;
13725:
13726: if (exists($name_to_ip{$dns})) {
13727: $ip = $name_to_ip{$dns};
13728: }
13729: if (!$ip) {
13730: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
13731: if (length($ip) == 4) {
13732: $ip = &IO::Socket::inet_ntoa($ip);
13733: }
13734: }
13735: if ($ip) {
13736: @hosts = get_hosts_from_ip($ip);
13737: return $hosts[0];
13738: }
13739: return undef;
13740: }
13741:
13742: sub get_internet_names {
13743: my ($lonid) = @_;
13744: return if ($lonid eq '');
13745: my ($idnref,$cached)=
13746: &Apache::lonnet::is_cached_new('internetnames',$lonid);
13747: if ($cached) {
13748: return $idnref;
13749: }
13750: my $ip = &get_host_ip($lonid);
13751: my @hosts = &get_hosts_from_ip($ip);
13752: my %iphost = &get_iphost();
13753: my (@idns,%seen);
13754: foreach my $id (@hosts) {
13755: my $dom = &host_domain($id);
13756: my $prim_id = &domain($dom,'primary');
13757: my $prim_ip = &get_host_ip($prim_id);
13758: next if ($seen{$prim_ip});
13759: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
13760: foreach my $id (@{$iphost{$prim_ip}}) {
13761: my $intdom = &internet_dom($id);
13762: unless (grep(/^\Q$intdom\E$/,@idns)) {
13763: push(@idns,$intdom);
13764: }
13765: }
13766: }
13767: $seen{$prim_ip} = 1;
13768: }
13769: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
13770: }
13771:
13772: }
13773:
13774: sub all_loncaparevs {
13775: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
13776: }
13777:
13778: # ---------------------------------------------------------- Read loncaparev table
13779: {
13780: sub load_loncaparevs {
13781: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
13782: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
13783: while (my $configline=<$config>) {
13784: chomp($configline);
13785: my ($hostid,$loncaparev)=split(/:/,$configline);
13786: $loncaparevs{$hostid}=$loncaparev;
13787: }
13788: close($config);
13789: }
13790: }
13791: }
13792: }
13793:
13794: # ---------------------------------------------------------- Read serverhostID table
13795: {
13796: sub load_serverhomeIDs {
13797: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
13798: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
13799: while (my $configline=<$config>) {
13800: chomp($configline);
13801: my ($name,$id)=split(/:/,$configline);
13802: $serverhomeIDs{$name}=$id;
13803: }
13804: close($config);
13805: }
13806: }
13807: }
13808: }
13809:
13810:
13811: BEGIN {
13812:
13813: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
13814: unless ($readit) {
13815: {
13816: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
13817: %perlvar = (%perlvar,%{$configvars});
13818: }
13819:
13820:
13821: # ------------------------------------------------------ Read spare server file
13822: {
13823: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
13824:
13825: while (my $configline=<$config>) {
13826: chomp($configline);
13827: if ($configline) {
13828: my ($host,$type) = split(':',$configline,2);
13829: if (!defined($type) || $type eq '') { $type = 'default' };
13830: push(@{ $spareid{$type} }, $host);
13831: }
13832: }
13833: close($config);
13834: }
13835: # ------------------------------------------------------------ Read permissions
13836: {
13837: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
13838:
13839: while (my $configline=<$config>) {
13840: chomp($configline);
13841: if ($configline) {
13842: my ($role,$perm)=split(/ /,$configline);
13843: if ($perm ne '') { $pr{$role}=$perm; }
13844: }
13845: }
13846: close($config);
13847: }
13848:
13849: # -------------------------------------------- Read plain texts for permissions
13850: {
13851: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
13852:
13853: while (my $configline=<$config>) {
13854: chomp($configline);
13855: if ($configline) {
13856: my ($short,@plain)=split(/:/,$configline);
13857: %{$prp{$short}} = ();
13858: if (@plain > 0) {
13859: $prp{$short}{'std'} = $plain[0];
13860: for (my $i=1; $i<@plain; $i++) {
13861: $prp{$short}{'alt'.$i} = $plain[$i];
13862: }
13863: }
13864: }
13865: }
13866: close($config);
13867: }
13868:
13869: # ---------------------------------------------------------- Read package table
13870: {
13871: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
13872:
13873: while (my $configline=<$config>) {
13874: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13875: chomp($configline);
13876: my ($short,$plain)=split(/:/,$configline);
13877: my ($pack,$name)=split(/\&/,$short);
13878: if ($plain ne '') {
13879: $packagetab{$pack.'&'.$name.'&name'}=$name;
13880: $packagetab{$short}=$plain;
13881: }
13882: }
13883: close($config);
13884: }
13885:
13886: # ---------------------------------------------------------- Read loncaparev table
13887:
13888: &load_loncaparevs();
13889:
13890: # ---------------------------------------------------------- Read serverhostID table
13891:
13892: &load_serverhomeIDs();
13893:
13894: # ---------------------------------------------------------- Read releaseslist XML
13895: {
13896: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13897: if (-e $file) {
13898: my $parser = HTML::LCParser->new($file);
13899: while (my $token = $parser->get_token()) {
13900: if ($token->[0] eq 'S') {
13901: my $item = $token->[1];
13902: my $name = $token->[2]{'name'};
13903: my $value = $token->[2]{'value'};
13904: my $valuematch = $token->[2]{'valuematch'};
13905: my $namematch = $token->[2]{'namematch'};
13906: if ($item eq 'parameter') {
13907: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
13908: my $release = $parser->get_text();
13909: $release =~ s/(^\s*|\s*$ )//gx;
13910: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
13911: }
13912: } elsif ($item ne '' && $name ne '') {
13913: my $release = $parser->get_text();
13914: $release =~ s/(^\s*|\s*$ )//gx;
13915: $needsrelease{$item.':'.$name.':'.$value} = $release;
13916: }
13917: }
13918: }
13919: }
13920: }
13921:
13922: # ---------------------------------------------------------- Read managers table
13923: {
13924: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13925: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
13926: while (my $configline=<$config>) {
13927: chomp($configline);
13928: next if ($configline =~ /^\#/);
13929: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13930: $managerstab{$configline} = 1;
13931: }
13932: }
13933: close($config);
13934: }
13935: }
13936: }
13937:
13938: # ------------- set up temporary directory
13939: {
13940: $tmpdir = LONCAPA::tempdir();
13941:
13942: }
13943:
13944: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13945: 'compress_threshold'=> 20_000,
13946: });
13947:
13948: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13949: $dumpcount=0;
13950: $locknum=0;
13951:
13952: &logtouch();
13953: &logthis('<font color="yellow">INFO: Read configuration</font>');
13954: $readit=1;
13955: {
13956: use integer;
13957: my $test=(2**32)+1;
13958: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13959: &logthis(" Detected 64bit platform ($_64bit)");
13960: }
13961: }
13962: }
13963:
13964: 1;
13965: __END__
13966:
13967: =pod
13968:
13969: =head1 NAME
13970:
13971: Apache::lonnet - Subroutines to ask questions about things in the network.
13972:
13973: =head1 SYNOPSIS
13974:
13975: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13976:
13977: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13978:
13979: Common parameters:
13980:
13981: =over 4
13982:
13983: =item *
13984:
13985: $uname : an internal username (if $cname expecting a course Id specifically)
13986:
13987: =item *
13988:
13989: $udom : a domain (if $cdom expecting a course's domain specifically)
13990:
13991: =item *
13992:
13993: $symb : a resource instance identifier
13994:
13995: =item *
13996:
13997: $namespace : the name of a .db file that contains the data needed or
13998: being set.
13999:
14000: =back
14001:
14002: =head1 OVERVIEW
14003:
14004: lonnet provides subroutines which interact with the
14005: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14006: about classes, users, and resources.
14007:
14008: For many of these objects you can also use this to store data about
14009: them or modify them in various ways.
14010:
14011: =head2 Symbs
14012:
14013: To identify a specific instance of a resource, LON-CAPA uses symbols
14014: or "symbs"X<symb>. These identifiers are built from the URL of the
14015: map, the resource number of the resource in the map, and the URL of
14016: the resource itself. The latter is somewhat redundant, but might help
14017: if maps change.
14018:
14019: An example is
14020:
14021: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14022:
14023: The respective map entry is
14024:
14025: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14026: title="Problem 2">
14027: </resource>
14028:
14029: Symbs are used by the random number generator, as well as to store and
14030: restore data specific to a certain instance of for example a problem.
14031:
14032: =head2 Storing And Retrieving Data
14033:
14034: X<store()>X<cstore()>X<restore()>Three of the most important functions
14035: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14036: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14037: is is the non-critical message twin of cstore. These functions are for
14038: handlers to store a perl hash to a user's permanent data space in an
14039: easy manner, and to retrieve it again on another call. It is expected
14040: that a handler would use this once at the beginning to retrieve data,
14041: and then again once at the end to send only the new data back.
14042:
14043: The data is stored in the user's data directory on the user's
14044: homeserver under the ID of the course.
14045:
14046: The hash that is returned by restore will have all of the previous
14047: value for all of the elements of the hash.
14048:
14049: Example:
14050:
14051: #creating a hash
14052: my %hash;
14053: $hash{'foo'}='bar';
14054:
14055: #storing it
14056: &Apache::lonnet::cstore(\%hash);
14057:
14058: #changing a value
14059: $hash{'foo'}='notbar';
14060:
14061: #adding a new value
14062: $hash{'bar'}='foo';
14063: &Apache::lonnet::cstore(\%hash);
14064:
14065: #retrieving the hash
14066: my %history=&Apache::lonnet::restore();
14067:
14068: #print the hash
14069: foreach my $key (sort(keys(%history))) {
14070: print("\%history{$key} = $history{$key}");
14071: }
14072:
14073: Will print out:
14074:
14075: %history{1:foo} = bar
14076: %history{1:keys} = foo:timestamp
14077: %history{1:timestamp} = 990455579
14078: %history{2:bar} = foo
14079: %history{2:foo} = notbar
14080: %history{2:keys} = foo:bar:timestamp
14081: %history{2:timestamp} = 990455580
14082: %history{bar} = foo
14083: %history{foo} = notbar
14084: %history{timestamp} = 990455580
14085: %history{version} = 2
14086:
14087: Note that the special hash entries C<keys>, C<version> and
14088: C<timestamp> were added to the hash. C<version> will be equal to the
14089: total number of versions of the data that have been stored. The
14090: C<timestamp> attribute will be the UNIX time the hash was
14091: stored. C<keys> is available in every historical section to list which
14092: keys were added or changed at a specific historical revision of a
14093: hash.
14094:
14095: B<Warning>: do not store the hash that restore returns directly. This
14096: will cause a mess since it will restore the historical keys as if the
14097: were new keys. I.E. 1:foo will become 1:1:foo etc.
14098:
14099: Calling convention:
14100:
14101: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14102: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14103:
14104: For more detailed information, see lonnet specific documentation.
14105:
14106: =head1 RETURN MESSAGES
14107:
14108: =over 4
14109:
14110: =item * B<con_lost>: unable to contact remote host
14111:
14112: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14113: when the connection is brought back up
14114:
14115: =item * B<con_failed>: unable to contact remote host and unable to save message
14116: for later delivery
14117:
14118: =item * B<error:>: an error a occurred, a description of the error follows the :
14119:
14120: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14121: that was requested
14122:
14123: =back
14124:
14125: =head1 PUBLIC SUBROUTINES
14126:
14127: =head2 Session Environment Functions
14128:
14129: =over 4
14130:
14131: =item *
14132: X<appenv()>
14133: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14134: the user envirnoment file, and will be restored for each access this
14135: user makes during this session, also modifies the %env for the current
14136: process. Optional rolesarrayref - if defined contains a reference to an array
14137: of roles which are exempt from the restriction on modifying user.role entries
14138: in the user's environment.db and in %env.
14139:
14140: =item *
14141: X<delenv()>
14142: B<delenv($delthis,$regexp)>: removes all items from the session
14143: environment file that begin with $delthis. If the
14144: optional second arg - $regexp - is true, $delthis is treated as a
14145: regular expression, otherwise \Q$delthis\E is used.
14146: The values are also deleted from the current processes %env.
14147:
14148: =item * get_env_multiple($name)
14149:
14150: gets $name from the %env hash, it seemlessly handles the cases where multiple
14151: values may be defined and end up as an array ref.
14152:
14153: returns an array of values
14154:
14155: =back
14156:
14157: =head2 User Information
14158:
14159: =over 4
14160:
14161: =item *
14162: X<queryauthenticate()>
14163: B<queryauthenticate($uname,$udom)>: try to determine user's current
14164: authentication scheme
14165:
14166: =item *
14167: X<authenticate()>
14168: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14169: authenticate user from domain's lib servers (first use the current
14170: one). C<$upass> should be the users password.
14171: $checkdefauth is optional (value is 1 if a check should be made to
14172: authenticate user using default authentication method, and allow
14173: account creation if username does not have account in the domain).
14174: $clientcancheckhost is optional (value is 1 if checking whether the
14175: server can host will occur on the client side in lonauth.pm).
14176:
14177: =item *
14178: X<homeserver()>
14179: B<homeserver($uname,$udom)>: find the server which has
14180: the user's directory and files (there must be only one), this caches
14181: the answer, and also caches if there is a borken connection.
14182:
14183: =item *
14184: X<idget()>
14185: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14186: a list of student/employee IDs or clicker IDs
14187: (student/employee IDs are a unique resource in a domain, there must be
14188: only 1 ID per username, and only 1 username per ID in a specific domain).
14189: clickerIDs are not necessarily unique, as students might share clickers.
14190: (returns hash: id=>name,id=>name)
14191:
14192: =item *
14193: X<idrget()>
14194: B<idrget($udom,@unames)>: find the IDs behind a list of
14195: usernames (returns hash: name=>id,name=>id)
14196:
14197: =item *
14198: X<idput()>
14199: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14200: names and associated student/employee IDs or clicker IDs.
14201:
14202: =item *
14203: X<iddel()>
14204: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14205: student/employee ID or clicker ID username look-ups from domain.
14206: The homeserver ($uhome) and namespace ($namespace) are optional.
14207: If no $uhome is provided, it will be determined usig &homeserver()
14208: for each user. If no $namespace is provided, the default is ids.
14209:
14210: =item *
14211: X<updateclickers()>
14212: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14213: clicker ID-to-username look-ups in clickers.db on library server.
14214: Permitted actions are add or del (i.e., add or delete). The
14215: clickers.db contains clickerID as keys (escaped), and each corresponding
14216: value is an escaped comma-separated list of usernames (for whom the
14217: library server is the homeserver), who registered that particular ID.
14218: If $critical is true, the update will be sent via &critical, otherwise
14219: &reply() will be used.
14220:
14221: =item *
14222: X<rolesinit()>
14223: B<rolesinit($udom,$username)>: get user privileges.
14224: returns user role, first access and timer interval hashes
14225:
14226: =item *
14227: X<privileged()>
14228: B<privileged($username,$domain)>: returns a true if user has a
14229: privileged and active role (i.e. su or dc), false otherwise.
14230:
14231: =item *
14232: X<getsection()>
14233: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14234: course $cname, return section name/number or '' for "not in course"
14235: and '-1' for "no section"
14236:
14237: =item *
14238: X<userenvironment()>
14239: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14240: passed in @what from the requested user's environment, returns a hash
14241:
14242: =item *
14243: X<userlog_query()>
14244: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14245: activity.log file. %filters defines filters applied when parsing the
14246: log file. These can be start or end timestamps, or the type of action
14247: - log to look for Login or Logout events, check for Checkin or
14248: Checkout, role for role selection. The response is in the form
14249: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14250: escaped strings of the action recorded in the activity.log file.
14251:
14252: =back
14253:
14254: =head2 User Roles
14255:
14256: =over 4
14257:
14258: =item *
14259:
14260: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14261: returns codes for allowed actions.
14262:
14263: The first argument is required, all others are optional.
14264:
14265: $priv is the privilege being checked.
14266: $uri contains additional information about what is being checked for access (e.g.,
14267: URL, course ID etc.).
14268: $symb is the unique resource instance identifier in a course; if needed,
14269: but not provided, it will be retrieved via a call to &symbread().
14270: $role is the role for which a priv is being checked (only used if priv is evb).
14271: $clientip is the user's IP address (only used when checking for access to portfolio
14272: files).
14273: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14274: prevents recursive calls to &allowed.
14275:
14276: F: full access
14277: U,I,K: authentication modes (cxx only)
14278: '': forbidden
14279: 1: user needs to choose course
14280: 2: browse allowed
14281: A: passphrase authentication needed
14282: B: access temporarily blocked because of a blocking event in a course.
14283:
14284: =item *
14285:
14286: constructaccess($url,$setpriv) : check for access to construction space URL
14287:
14288: See if the owner domain and name in the URL match those in the
14289: expected environment. If so, return three element list
14290: ($ownername,$ownerdomain,$ownerhome).
14291:
14292: Otherwise return the null string.
14293:
14294: If second argument 'setpriv' is true, it assigns the privileges,
14295: and returns the same three element list, unless the owner has
14296: blocked "ad hoc" Domain Coordinator access to the Author Space,
14297: in which case the null string is returned.
14298:
14299: =item *
14300:
14301: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14302: define a custom role rolename set privileges in format of lonTabs/roles.tab
14303: for system, domain, and course level. $uname and $udom are optional (current
14304: user's username and domain will be used when either of $uname or $udom are absent.
14305:
14306: =item *
14307:
14308: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14309: (rolesplain.tab); plain text explanation of a user role term.
14310: $type is Course (default) or Community.
14311: If $forcedefault evaluates to true, text returned will be default
14312: text for $type. Otherwise, if this is a course, the text returned
14313: will be a custom name for the role (if defined in the course's
14314: environment). If no custom name is defined the default is returned.
14315:
14316: =item *
14317:
14318: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14319: All arguments are optional. Returns a hash of a roles, either for
14320: co-author/assistant author roles for a user's Construction Space
14321: (default), or if $context is 'userroles', roles for the user himself,
14322: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14323: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14324: For each key, value is set to colon-separated start and end times for
14325: the role. If no username and domain are specified, will default to
14326: current user/domain. Types, roles, and roledoms are references to arrays
14327: of role statuses (active, future or previous), roles
14328: (e.g., cc,in, st etc.) and domains of the roles which can be used
14329: to restrict the list of roles reported. If no array ref is
14330: provided for types, will default to return only active roles.
14331:
14332: =item *
14333:
14334: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14335: user: $uname:$udom has a role in the course: $cdom_$cnum.
14336:
14337: Additional optional arguments are: $type (if role checking is to be restricted
14338: to certain user status types -- previous (expired roles), active (currently
14339: available roles) or future (roles available in the future), and
14340: $hideprivileged -- if true will not report course roles for users who
14341: have active Domain Coordinator role in course's domain or in additional
14342: domains (specified in 'Domains to check for privileged users' in course
14343: environment -- set via: Course Settings -> Classlists and staff listing).
14344:
14345: =item *
14346:
14347: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14348: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14349: $possdomains and $possroles are optional array refs -- to domains to check and
14350: roles to check. If $possdomains is not specified, a dump will be done of the
14351: users' roles.db to check for a dc or su role in any domain. This can be
14352: time consuming if &privileged is called repeatedly (e.g., when displaying a
14353: classlist), so in such cases, supplying a $possdomains array is preferred, as
14354: this then allows &privileged_by_domain() to be used, which caches the identity
14355: of privileged users, eliminating the need for repeated calls to &dump().
14356:
14357: =item *
14358:
14359: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14360: where the outer hash keys are domains specified in the $possdomains array ref,
14361: next inner hash keys are privileged roles specified in the $roles array ref,
14362: and the innermost hash contains key = value pairs for username:domain = end:start
14363: for active or future "privileged" users with that role in that domain. To avoid
14364: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14365: innerhash are cached using priv_$role and $dom as the identifiers.
14366:
14367: =back
14368:
14369: =head2 User Modification
14370:
14371: =over 4
14372:
14373: =item *
14374:
14375: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14376: user for the level given by URL. Optional start and end dates (leave empty
14377: string or zero for "no date")
14378:
14379: =item *
14380:
14381: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14382: change a users, password, possible return values are: ok,
14383: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14384: refused
14385:
14386: =item *
14387:
14388: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14389:
14390: =item *
14391:
14392: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14393: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14394:
14395: will update user information (firstname,middlename,lastname,generation,
14396: permanentemail), and if forceid is true, student/employee ID also.
14397: A user's institutional affiliation(s) can also be updated.
14398: User information fields will not be overwritten with empty entries
14399: unless the field is included in the $candelete array reference.
14400: This array is included when a single user is modified via "Manage Users",
14401: or when Autoupdate.pl is run by cron in a domain.
14402:
14403: =item *
14404:
14405: modifystudent
14406:
14407: modify a student's enrollment and identification information.
14408: The course id is resolved based on the current user's environment.
14409: This means the invoking user must be a course coordinator or otherwise
14410: associated with a course.
14411:
14412: This call is essentially a wrapper for lonnet::modifyuser and
14413: lonnet::modify_student_enrollment
14414:
14415: Inputs:
14416:
14417: =over 4
14418:
14419: =item B<$udom> Student's loncapa domain
14420:
14421: =item B<$uname> Student's loncapa login name
14422:
14423: =item B<$uid> Student/Employee ID
14424:
14425: =item B<$umode> Student's authentication mode
14426:
14427: =item B<$upass> Student's password
14428:
14429: =item B<$first> Student's first name
14430:
14431: =item B<$middle> Student's middle name
14432:
14433: =item B<$last> Student's last name
14434:
14435: =item B<$gene> Student's generation
14436:
14437: =item B<$usec> Student's section in course
14438:
14439: =item B<$end> Unix time of the roles expiration
14440:
14441: =item B<$start> Unix time of the roles start date
14442:
14443: =item B<$forceid> If defined, allow $uid to be changed
14444:
14445: =item B<$desiredhome> server to use as home server for student
14446:
14447: =item B<$email> Student's permanent e-mail address
14448:
14449: =item B<$type> Type of enrollment (auto or manual)
14450:
14451: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14452:
14453: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14454:
14455: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14456:
14457: =item B<$context> role change context (shown in User Management Logs display in a course)
14458:
14459: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14460:
14461: =item B<$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.
14462:
14463: =back
14464:
14465: =item *
14466:
14467: modify_student_enrollment
14468:
14469: Change a student's enrollment status in a class. The environment variable
14470: 'role.request.course' must be defined for this function to proceed.
14471:
14472: Inputs:
14473:
14474: =over 4
14475:
14476: =item $udom, student's domain
14477:
14478: =item $uname, student's name
14479:
14480: =item $uid, student's user id
14481:
14482: =item $first, student's first name
14483:
14484: =item $middle
14485:
14486: =item $last
14487:
14488: =item $gene
14489:
14490: =item $usec
14491:
14492: =item $end
14493:
14494: =item $start
14495:
14496: =item $type
14497:
14498: =item $locktype
14499:
14500: =item $cid
14501:
14502: =item $selfenroll
14503:
14504: =item $context
14505:
14506: =item $credits, number of credits student will earn from this class
14507:
14508: =item $instsec, institutional course section code for student
14509:
14510: =back
14511:
14512:
14513: =item *
14514:
14515: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14516: custom role; give a custom role to a user for the level given by URL. Specify
14517: name and domain of role author, and role name
14518:
14519: =item *
14520:
14521: revokerole($udom,$uname,$url,$role) : revoke a role for url
14522:
14523: =item *
14524:
14525: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14526:
14527: =back
14528:
14529: =head2 Course Infomation
14530:
14531: =over 4
14532:
14533: =item *
14534:
14535: coursedescription($courseid,$options) : returns a hash of information about the
14536: specified course id, including all environment settings for the
14537: course, the description of the course will be in the hash under the
14538: key 'description'
14539:
14540: $options is an optional parameter that if supplied is a hash reference that controls
14541: what how this function works. It has the following key/values:
14542:
14543: =over 4
14544:
14545: =item freshen_cache
14546:
14547: If defined, and the environment cache for the course is valid, it is
14548: returned in the returned hash.
14549:
14550: =item one_time
14551:
14552: If defined, the last cache time is set to _now_
14553:
14554: =item user
14555:
14556: If defined, the supplied username is used instead of the current user.
14557:
14558:
14559: =back
14560:
14561: =item *
14562:
14563: resdata($name,$domain,$type,@which) : request for current parameter
14564: setting for a specific $type, where $type is either 'course' or 'user',
14565: @what should be a list of parameters to ask about. This routine caches
14566: answers for 10 minutes.
14567:
14568: =item *
14569:
14570: get_courseresdata($courseid, $domain) : dump the entire course resource
14571: data base, returning a hash that is keyed by the resource name and has
14572: values that are the resource value. I believe that the timestamps and
14573: versions are also returned.
14574:
14575: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
14576: supplemental content area. This routine caches the number of files for
14577: 10 minutes.
14578:
14579: =back
14580:
14581: =head2 Course Modification
14582:
14583: =over 4
14584:
14585: =item *
14586:
14587: writecoursepref($courseid,%prefs) : write preferences (environment
14588: database) for a course
14589:
14590: =item *
14591:
14592: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
14593:
14594: =item *
14595:
14596: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14597:
14598: =item *
14599:
14600: is_course($courseid), is_course($cdom, $cnum)
14601:
14602: Accepts either a combined $courseid (in the form of domain_courseid) or the
14603: two component version $cdom, $cnum. It checks if the specified course exists.
14604:
14605: Returns:
14606: undef if the course doesn't exist, otherwise
14607: in scalar context the combined courseid.
14608: in list context the two components of the course identifier, domain and
14609: courseid.
14610:
14611: =back
14612:
14613: =head2 Resource Subroutines
14614:
14615: =over 4
14616:
14617: =item *
14618:
14619: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14620:
14621: =item *
14622:
14623: repcopy($filename) : subscribes to the requested file, and attempts to
14624: replicate from the owning library server, Might return
14625: 'unavailable', 'not_found', 'forbidden', 'ok', or
14626: 'bad_request', also attempts to grab the metadata for the
14627: resource. Expects the local filesystem pathname
14628: (/home/httpd/html/res/....)
14629:
14630: =back
14631:
14632: =head2 Resource Information
14633:
14634: =over 4
14635:
14636: =item *
14637:
14638: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14639: and returns the value of a variety of different possible values,
14640: $varname should be a request string, and the other parameters can be
14641: used to specify who and what one is asking about. Ordinarily, $cid
14642: does not need to be specified, as it is retrived from
14643: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14644: within lonuserstate::loadmap() when initializing a course, before
14645: $env{'request.course.id'} has been set, so it needs to be provided
14646: in that one case.
14647:
14648: Possible values for $varname are environment.lastname (or other item
14649: from the envirnment hash), user.name (or someother aspect about the
14650: user), resource.0.maxtries (or some other part and parameter of a
14651: resource)
14652:
14653: =item *
14654:
14655: directcondval($number) : get current value of a condition; reads from a state
14656: string
14657:
14658: =item *
14659:
14660: condval($condidx) : value of condition index based on state
14661:
14662: =item *
14663:
14664: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
14665: resource's metadata, $what should be either a specific key, or either
14666: 'keys' (to get a list of possible keys) or 'packages' to get a list of
14667: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
14668:
14669: this function automatically caches all requests
14670:
14671: =item *
14672:
14673: metadata_query($query,$custom,$customshow) : make a metadata query against the
14674: network of library servers; returns file handle of where SQL and regex results
14675: will be stored for query
14676:
14677: =item *
14678:
14679: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
14680: return symbolic list entry (all arguments optional).
14681:
14682: Args: filename is the filename (including path) for the file for which a symb
14683: is required; donotrecurse, if true will prevent calls to allowed() being made
14684: to check access status if more than one resource was found in the bighash
14685: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
14686: a randompick); ignorecachednull, if true will prevent a symb of '' being
14687: returned if $env{$cache_str} is defined as ''; checkforblock if true will
14688: cause possible symbs to be checked to determine if they are subject to content
14689: blocking, if so they will not be included as possible symbs; possibles is a
14690: ref to a hash, which, as a side effect, will be populated with all possible
14691: symbs (content blocking not tested).
14692:
14693: returns the data handle
14694:
14695: =item *
14696:
14697: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
14698: and is a possible symb for the URL in $thisfn, and if is an encrypted
14699: resource that the user accessed using /enc/ returns a 1 on success, 0
14700: on failure, user must be in a course, as it assumes the existence of
14701: the course initial hash, and uses $env('request.course.id'}. The third
14702: arg is an optional reference to a scalar. If this arg is passed in the
14703: call to symbverify, it will be set to 1 if the symb has been set to be
14704: encrypted; otherwise it will be null.
14705:
14706: =item *
14707:
14708: symbclean($symb) : removes versions numbers from a symb, returns the
14709: cleaned symb
14710:
14711: =item *
14712:
14713: is_on_map($uri) : checks if the $uri is somewhere on the current
14714: course map, user must be in a course for it to work.
14715:
14716: =item *
14717:
14718: numval($salt) : return random seed value (addend for rndseed)
14719:
14720: =item *
14721:
14722: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
14723: a random seed, all arguments are optional, if they aren't sent it uses the
14724: environment to derive them. Note: if symb isn't sent and it can't get one
14725: from &symbread it will use the current time as its return value
14726:
14727: =item *
14728:
14729: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
14730: unfakeable, receipt
14731:
14732: =item *
14733:
14734: receipt() : API to ireceipt working off of env values; given out to users
14735:
14736: =item *
14737:
14738: countacc($url) : count the number of accesses to a given URL
14739:
14740: =item *
14741:
14742: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
14743:
14744: =item *
14745:
14746: checkin($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 $tcrsid)
14747:
14748: =item *
14749:
14750: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
14751:
14752: =item *
14753:
14754: devalidate($symb) : devalidate temporary spreadsheet calculations,
14755: forcing spreadsheet to reevaluate the resource scores next time.
14756:
14757: =item *
14758:
14759: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
14760: when viewing in course context.
14761:
14762: input: six args -- filename (decluttered), course number, course domain,
14763: url, symb (if registered) and group (if this is a
14764: group item -- e.g., bulletin board, group page etc.).
14765:
14766: output: array of five scalars --
14767: $cfile -- url for file editing if editable on current server
14768: $home -- homeserver of resource (i.e., for author if published,
14769: or course if uploaded.).
14770: $switchserver -- 1 if server switch will be needed.
14771: $forceedit -- 1 if icon/link should be to go to edit mode
14772: $forceview -- 1 if icon/link should be to go to view mode
14773:
14774: =item *
14775:
14776: is_course_upload($file,$cnum,$cdom)
14777:
14778: Used in course context to determine if current file was uploaded to
14779: the course (i.e., would be found in /userfiles/docs on the course's
14780: homeserver.
14781:
14782: input: 3 args -- filename (decluttered), course number and course domain.
14783: output: boolean -- 1 if file was uploaded.
14784:
14785: =back
14786:
14787: =head2 Storing/Retreiving Data
14788:
14789: =over 4
14790:
14791: =item *
14792:
14793: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
14794: permanently for this url; hashref needs to be given and should be a \%hashname;
14795: the remaining args aren't required and if they aren't passed or are '' they will
14796: be derived from the env (with the exception of $laststore, which is an
14797: optional arg used when a user's submission is stored in grading).
14798: $laststore is $version=$timestamp, where $version is the most recent version
14799: number retrieved for the corresponding $symb in the $namespace db file, and
14800: $timestamp is the timestamp for that transaction (UNIX time).
14801: $laststore is currently only passed when cstore() is called by
14802: structuretags::finalize_storage().
14803:
14804: =item *
14805:
14806: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
14807: but uses critical subroutine
14808:
14809: =item *
14810:
14811: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
14812: all args are optional
14813:
14814: =item *
14815:
14816: dumpstore($namespace,$udom,$uname,$regexp,$range) :
14817: dumps the complete (or key matching regexp) namespace into a hash
14818: ($udom, $uname, $regexp, $range are optional) for a namespace that is
14819: normally &store()ed into
14820:
14821: $range should be either an integer '100' (give me the first 100
14822: matching records)
14823: or be two integers sperated by a - with no spaces
14824: '30-50' (give me the 30th through the 50th matching
14825: records)
14826:
14827:
14828: =item *
14829:
14830: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
14831: replaces a &store() version of data with a replacement set of data
14832: for a particular resource in a namespace passed in the $storehash hash
14833: reference. If $tolog is true, the transaction is logged in the courselog
14834: with an action=PUTSTORE.
14835:
14836: =item *
14837:
14838: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
14839: works very similar to store/cstore, but all data is stored in a
14840: temporary location and can be reset using tmpreset, $storehash should
14841: be a hash reference, returns nothing on success
14842:
14843: =item *
14844:
14845: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
14846: similar to restore, but all data is stored in a temporary location and
14847: can be reset using tmpreset. Returns a hash of values on success,
14848: error string otherwise.
14849:
14850: =item *
14851:
14852: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14853: deltes all keys for $symb form the temporary storage hash.
14854:
14855: =item *
14856:
14857: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14858: reference filled in from namesp ($udom and $uname are optional)
14859:
14860: =item *
14861:
14862: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14863: namesp ($udom and $uname are optional)
14864:
14865: =item *
14866:
14867: dump($namespace,$udom,$uname,$regexp,$range) :
14868: dumps the complete (or key matching regexp) namespace into a hash
14869: ($udom, $uname, $regexp, $range are optional)
14870:
14871: $range should be either an integer '100' (give me the first 100
14872: matching records)
14873: or be two integers sperated by a - with no spaces
14874: '30-50' (give me the 30th through the 50th matching
14875: records)
14876: =item *
14877:
14878: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14879: $store can be a scalar, an array reference, or if the amount to be
14880: incremented is > 1, a hash reference.
14881:
14882: ($udom and $uname are optional)
14883:
14884: =item *
14885:
14886: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14887: ($udom and $uname are optional)
14888:
14889: =item *
14890:
14891: cput($namespace,$storehash,$udom,$uname) : critical put
14892: ($udom and $uname are optional)
14893:
14894: =item *
14895:
14896: newput($namespace,$storehash,$udom,$uname) :
14897:
14898: Attempts to store the items in the $storehash, but only if they don't
14899: currently exist, if this succeeds you can be certain that you have
14900: successfully created a new key value pair in the $namespace db.
14901:
14902:
14903: Args:
14904: $namespace: name of database to store values to
14905: $storehash: hashref to store to the db
14906: $udom: (optional) domain of user containing the db
14907: $uname: (optional) name of user caontaining the db
14908:
14909: Returns:
14910: 'ok' -> succeeded in storing all keys of $storehash
14911: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14912: least <key> already existed in the db (other
14913: requested keys may also already exist)
14914: 'error: <msg>' -> unable to tie the DB or other error occurred
14915: 'con_lost' -> unable to contact request server
14916: 'refused' -> action was not allowed by remote machine
14917:
14918:
14919: =item *
14920:
14921: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14922: reference filled in from namesp (encrypts the return communication)
14923: ($udom and $uname are optional)
14924:
14925: =item *
14926:
14927: log($udom,$name,$home,$message) : write to permanent log for user; use
14928: critical subroutine
14929:
14930: =item *
14931:
14932: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14933: array reference filled in from namespace found in domain level on either
14934: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14935:
14936: =item *
14937:
14938: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14939: domain level either on specified domain server ($uhome) or primary domain
14940: server ($udom and $uhome are optional)
14941:
14942: =item *
14943:
14944: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14945: for: authentication, language, quotas, timezone, date locale, and portal URL in
14946: the target domain.
14947:
14948: May also include additional key => value pairs for the following groups:
14949:
14950: =over
14951:
14952: =item
14953: disk quotas (MB allocated by default to portfolios and authoring spaces).
14954:
14955: =over
14956:
14957: =item defaultquota, authorquota
14958:
14959: =back
14960:
14961: =item
14962: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14963: portfolio for users).
14964:
14965: =over
14966:
14967: =item
14968: aboutme, blog, webdav, portfolio
14969:
14970: =back
14971:
14972: =item
14973: requestcourses: ability to request courses, and how requests are processed.
14974:
14975: =over
14976:
14977: =item
14978: official, unofficial, community, textbook, placement
14979:
14980: =back
14981:
14982: =item
14983: inststatus: types of institutional affiliation, and order in which they are displayed.
14984:
14985: =over
14986:
14987: =item
14988: inststatustypes, inststatusorder, inststatusguest
14989:
14990: =back
14991:
14992: =item
14993: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14994: for course's uploaded content.
14995:
14996: =over
14997:
14998: =item
14999: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15000: communityquota, textbookquota, placementquota
15001:
15002: =back
15003:
15004: =item
15005: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15006: on your servers.
15007:
15008: =over
15009:
15010: =item
15011: remotesessions, hostedsessions
15012:
15013: =back
15014:
15015: =back
15016:
15017: In cases where a domain coordinator has never used the "Set Domain Configuration"
15018: utility to create a configuration.db file on a domain's primary library server
15019: only the following domain defaults: auth_def, auth_arg_def, lang_def
15020: -- corresponding values are authentication type (internal, krb4, krb5,
15021: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15022: will be available. Values are retrieved from cache (if current), unless the
15023: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15024: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15025:
15026: Typical usage:
15027:
15028: %domdefaults = &get_domain_defaults($target_domain);
15029:
15030: =back
15031:
15032: =head2 Network Status Functions
15033:
15034: =over 4
15035:
15036: =item *
15037:
15038: dirlist() : return directory list based on URI (first arg).
15039:
15040: Inputs: 1 required, 5 optional.
15041:
15042: =over
15043:
15044: =item
15045: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15046:
15047: =item
15048: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15049:
15050: =item
15051: $username - username of user/course to be listed. Extracted from $uri if absent.
15052:
15053: =item
15054: $getpropath - boolean: 1 if prepend path using &propath().
15055:
15056: =item
15057: $getuserdir - boolean: 1 if prepend path for "userfiles".
15058:
15059: =item
15060: $alternateRoot - path to prepend in place of path from $uri.
15061:
15062: =back
15063:
15064: Returns: Array of up to two items.
15065:
15066: =over
15067:
15068: a reference to an array of files/subdirectories
15069:
15070: =over
15071:
15072: Each element in the array of files/subdirectories is a & separated list of
15073: item name and the result of running stat on the item. If dirlist was requested
15074: for a file instead of a directory, the item name will be ''. For a directory
15075: listing, if the item is a metadata file, the element will end &N&M
15076: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15077: default copyright set (1).
15078:
15079: =back
15080:
15081: a scalar containing error condition (if encountered).
15082:
15083: =over
15084:
15085: =item
15086: no_host (no homeserver identified for $username:$domain).
15087:
15088: =item
15089: no_such_host (server contacted for listing not identified as valid host).
15090:
15091: =item
15092: con_lost (connection to remote server failed).
15093:
15094: =item
15095: refused (invalid $username:$domain received on lond side).
15096:
15097: =item
15098: no_such_dir (directory at specified path on lond side does not exist).
15099:
15100: =item
15101: empty (directory at specified path on lond side is empty).
15102:
15103: =over
15104:
15105: This is currently not encountered because the &ls3, &ls2,
15106: &ls (_handler) routines on the lond side do not filter out
15107: . and .. from a directory listing.
15108:
15109: =back
15110:
15111: =back
15112:
15113: =back
15114:
15115: =item *
15116:
15117: spareserver() : find server with least workload from spare.tab
15118:
15119:
15120: =item *
15121:
15122: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15123: if there is no corresponding loncapa host.
15124:
15125: =back
15126:
15127:
15128: =head2 Apache Request
15129:
15130: =over 4
15131:
15132: =item *
15133:
15134: ssi($url,%hash) : server side include, does a complete request cycle on url to
15135: localhost, posts hash
15136:
15137: =back
15138:
15139: =head2 Data to String to Data
15140:
15141: =over 4
15142:
15143: =item *
15144:
15145: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15146: and '&' separators, supports elements that are arrayrefs and hashrefs
15147:
15148: =item *
15149:
15150: hashref2str($hashref) : convert a hashref into a string complete with
15151: escaping and '=' and '&' separators, supports elements that are
15152: arrayrefs and hashrefs
15153:
15154: =item *
15155:
15156: arrayref2str($arrayref) : convert an arrayref into a string complete
15157: with escaping and '&' separators, supports elements that are arrayrefs
15158: and hashrefs
15159:
15160: =item *
15161:
15162: str2hash($string) : convert string to hash using unescaping and
15163: splitting on '=' and '&', supports elements that are arrayrefs and
15164: hashrefs
15165:
15166: =item *
15167:
15168: str2array($string) : convert string to hash using unescaping and
15169: splitting on '&', supports elements that are arrayrefs and hashrefs
15170:
15171: =back
15172:
15173: =head2 Logging Routines
15174:
15175:
15176: These routines allow one to make log messages in the lonnet.log and
15177: lonnet.perm logfiles.
15178:
15179: =over 4
15180:
15181: =item *
15182:
15183: logtouch() : make sure the logfile, lonnet.log, exists
15184:
15185: =item *
15186:
15187: logthis() : append message to the normal lonnet.log file, it gets
15188: preiodically rolled over and deleted.
15189:
15190: =item *
15191:
15192: logperm() : append a permanent message to lonnet.perm.log, this log
15193: file never gets deleted by any automated portion of the system, only
15194: messages of critical importance should go in here.
15195:
15196:
15197: =back
15198:
15199: =head2 General File Helper Routines
15200:
15201: =over 4
15202:
15203: =item *
15204:
15205: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15206: (a) files in /uploaded
15207: (i) If a local copy of the file exists -
15208: compares modification date of local copy with last-modified date for
15209: definitive version stored on home server for course. If local copy is
15210: stale, requests a new version from the home server and stores it.
15211: If the original has been removed from the home server, then local copy
15212: is unlinked.
15213: (ii) If local copy does not exist -
15214: requests the file from the home server and stores it.
15215:
15216: If $caller is 'uploadrep':
15217: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15218: for request for files originally uploaded via DOCS.
15219: - returns 'ok' if fresh local copy now available, -1 otherwise.
15220:
15221: Otherwise:
15222: This indicates a call from the content generation phase of the request.
15223: - returns the entire contents of the file or -1.
15224:
15225: (b) files in /res
15226: - returns the entire contents of a file or -1;
15227: it properly subscribes to and replicates the file if neccessary.
15228:
15229:
15230: =item *
15231:
15232: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15233: reference
15234:
15235: returns either a stat() list of data about the file or an empty list
15236: if the file doesn't exist or couldn't find out about it (connection
15237: problems or user unknown)
15238:
15239: =item *
15240:
15241: filelocation($dir,$file) : returns file system location of a file
15242: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15243: directory that relative $file lookups are to looked in ($dir of /a/dir
15244: and a file of ../bob will become /a/bob)
15245:
15246: =item *
15247:
15248: hreflocation($dir,$file) : returns file system location or a URL; same as
15249: filelocation except for hrefs
15250:
15251: =item *
15252:
15253: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15254: also removes beginning /home/httpd/html unless /priv/ follows it.
15255:
15256: =back
15257:
15258: =head2 Usererfile file routines (/uploaded*)
15259:
15260: =over 4
15261:
15262: =item *
15263:
15264: userfileupload(): main rotine for putting a file in a user or course's
15265: filespace, arguments are,
15266:
15267: formname - required - this is the name of the element in $env where the
15268: filename, and the contents of the file to create/modifed exist
15269: the filename is in $env{'form.'.$formname.'.filename'} and the
15270: contents of the file is located in $env{'form.'.$formname}
15271: context - if coursedoc, store the file in the course of the active role
15272: of the current user;
15273: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15274: if 'canceloverwrite': delete file in tmp/overwrites directory
15275: subdir - required - subdirectory to put the file in under ../userfiles/
15276: if undefined, it will be placed in "unknown"
15277:
15278: (This routine calls clean_filename() to remove any dangerous
15279: characters from the filename, and then calls finuserfileupload() to
15280: complete the transaction)
15281:
15282: returns either the url of the uploaded file (/uploaded/....) if successful
15283: and /adm/notfound.html if unsuccessful
15284:
15285: =item *
15286:
15287: clean_filename(): routine for cleaing a filename up for storage in
15288: userfile space, argument is:
15289:
15290: filename - proposed filename
15291:
15292: returns: the new clean filename
15293:
15294: =item *
15295:
15296: finishuserfileupload(): routine that creates and sends the file to
15297: userspace, probably shouldn't be called directly
15298:
15299: docuname: username or courseid of destination for the file
15300: docudom: domain of user/course of destination for the file
15301: formname: same as for userfileupload()
15302: fname: filename (including subdirectories) for the file
15303: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15304: allfiles: reference to hash used to store objects found by parser
15305: codebase: reference to hash used for codebases of java objects found by parser
15306: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15307: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15308: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15309: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15310: context: if 'overwrite', will move the uploaded file from its temporary location to
15311: userfiles to facilitate overwriting a previously uploaded file with same name.
15312: mimetype: reference to scalar to accommodate mime type determined
15313: from File::MMagic if $parser = parse.
15314:
15315: returns either the url of the uploaded file (/uploaded/....) if successful
15316: and /adm/notfound.html if unsuccessful (or an error message if context
15317: was 'overwrite').
15318:
15319:
15320: =item *
15321:
15322: renameuserfile(): renames an existing userfile to a new name
15323:
15324: Args:
15325: docuname: username or courseid of destination for the file
15326: docudom: domain of user/course of destination for the file
15327: old: current file name (including any subdirs under userfiles)
15328: new: desired file name (including any subdirs under userfiles)
15329:
15330: =item *
15331:
15332: mkdiruserfile(): creates a directory is a userfiles dir
15333:
15334: Args:
15335: docuname: username or courseid of destination for the file
15336: docudom: domain of user/course of destination for the file
15337: dir: dir to create (including any subdirs under userfiles)
15338:
15339: =item *
15340:
15341: removeuserfile(): removes a file that exists in userfiles
15342:
15343: Args:
15344: docuname: username or courseid of destination for the file
15345: docudom: domain of user/course of destination for the file
15346: fname: filname to delete (including any subdirs under userfiles)
15347:
15348: =item *
15349:
15350: removeuploadedurl(): convience function for removeuserfile()
15351:
15352: Args:
15353: url: a full /uploaded/... url to delete
15354:
15355: =item *
15356:
15357: get_portfile_permissions():
15358: Args:
15359: domain: domain of user or course contain the portfolio files
15360: user: name of user or num of course contain the portfolio files
15361: Returns:
15362: hashref of a dump of the proper file_permissions.db
15363:
15364:
15365: =item *
15366:
15367: get_access_controls():
15368:
15369: Args:
15370: current_permissions: the hash ref returned from get_portfile_permissions()
15371: group: (optional) the group you want the files associated with
15372: file: (optional) the file you want access info on
15373:
15374: Returns:
15375: a hash (keys are file names) of hashes containing
15376: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15377: values are XML containing access control settings (see below)
15378:
15379: Internal notes:
15380:
15381: access controls are stored in file_permissions.db as key=value pairs.
15382: key -> path to file/file_name\0uniqueID:scope_end_start
15383: where scope -> public,guest,course,group,domains or users.
15384: end -> UNIX time for end of access (0 -> no end date)
15385: start -> UNIX time for start of access
15386:
15387: value -> XML description of access control
15388: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15389: <start></start>
15390: <end></end>
15391:
15392: <password></password> for scope type = guest
15393:
15394: <domain></domain> for scope type = course or group
15395: <number></number>
15396: <roles id="">
15397: <role></role>
15398: <access></access>
15399: <section></section>
15400: <group></group>
15401: </roles>
15402:
15403: <dom></dom> for scope type = domains
15404:
15405: <users> for scope type = users
15406: <user>
15407: <uname></uname>
15408: <udom></udom>
15409: </user>
15410: </users>
15411: </scope>
15412:
15413: Access data is also aggregated for each file in an additional key=value pair:
15414: key -> path to file/file_name\0accesscontrol
15415: value -> reference to hash
15416: hash contains key = value pairs
15417: where key = uniqueID:scope_end_start
15418: value = UNIX time record was last updated
15419:
15420: Used to improve speed of look-ups of access controls for each file.
15421:
15422: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15423:
15424: =item *
15425:
15426: modify_access_controls():
15427:
15428: Modifies access controls for a portfolio file
15429: Args
15430: 1. file name
15431: 2. reference to hash of required changes,
15432: 3. domain
15433: 4. username
15434: where domain,username are the domain of the portfolio owner
15435: (either a user or a course)
15436:
15437: Returns:
15438: 1. result of additions or updates ('ok' or 'error', with error message).
15439: 2. result of deletions ('ok' or 'error', with error message).
15440: 3. reference to hash of any new or updated access controls.
15441: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15442: key = integer (inbound ID)
15443: value = uniqueID
15444:
15445: =item *
15446:
15447: get_timebased_id():
15448:
15449: Attempts to get a unique timestamp-based suffix for use with items added to a
15450: course via the Course Editor (e.g., folders, composite pages,
15451: group bulletin boards).
15452:
15453: Args: (first three required; six others optional)
15454:
15455: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15456: docssequence, or name of group
15457:
15458: 2. keyid (alphanumeric): name of temporary locking key in hash,
15459: e.g., num, boardids
15460:
15461: 3. namespace: name of gdbm file used to store suffixes already assigned;
15462: file will be named nohist_namespace.db
15463:
15464: 4. cdom: domain of course; default is current course domain from %env
15465:
15466: 5. cnum: course number; default is current course number from %env
15467:
15468: 6. idtype: set to concat if an additional digit is to be appended to the
15469: unix timestamp to form the suffix, if the plain timestamp is already
15470: in use. Default is to not do this, but simply increment the unix
15471: timestamp by 1 until a unique key is obtained.
15472:
15473: 7. who: holder of locking key; defaults to user:domain for user.
15474:
15475: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15476: retrying); default is 3.
15477:
15478: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15479:
15480: Returns:
15481:
15482: 1. suffix obtained (numeric)
15483:
15484: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15485:
15486: 3. error: contains (localized) error message if an error occurred.
15487:
15488:
15489: =back
15490:
15491: =head2 HTTP Helper Routines
15492:
15493: =over 4
15494:
15495: =item *
15496:
15497: escape() : unpack non-word characters into CGI-compatible hex codes
15498:
15499: =item *
15500:
15501: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15502:
15503: =back
15504:
15505: =head1 PRIVATE SUBROUTINES
15506:
15507: =head2 Underlying communication routines (Shouldn't call)
15508:
15509: =over 4
15510:
15511: =item *
15512:
15513: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15514:
15515: =item *
15516:
15517: reply() : uses subreply to send a message to remote machine, logs all failures
15518:
15519: =item *
15520:
15521: critical() : passes a critical message to another server; if cannot
15522: get through then place message in connection buffer directory and
15523: returns con_delayed, if incapable of saving message, returns
15524: con_failed
15525:
15526: =item *
15527:
15528: reconlonc() : tries to reconnect lonc client processes.
15529:
15530: =back
15531:
15532: =head2 Resource Access Logging
15533:
15534: =over 4
15535:
15536: =item *
15537:
15538: flushcourselogs() : flush (save) buffer logs and access logs
15539:
15540: =item *
15541:
15542: courselog($what) : save message for course in hash
15543:
15544: =item *
15545:
15546: courseacclog($what) : save message for course using &courselog(). Perform
15547: special processing for specific resource types (problems, exams, quizzes, etc).
15548:
15549: =item *
15550:
15551: goodbye() : flush course logs and log shutting down; it is called in srm.conf
15552: as a PerlChildExitHandler
15553:
15554: =back
15555:
15556: =head2 Other
15557:
15558: =over 4
15559:
15560: =item *
15561:
15562: symblist($mapname,%newhash) : update symbolic storage links
15563:
15564: =back
15565:
15566: =cut
15567:
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