File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Mon Nov 24 02:36:21 2014 UTC (9 years, 7 months ago) by
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- Bug 6740 Out-of-order recording of submissions (by time).
- Check for new transactions made immediately before call to lonnet::cstore()
&Apache::inputtags::hidealldata() called if correct then incorrect,
where awarded >= 1 when correct (feedback on correctness enabled).
- Check for transactions made immediately after call to lonnet::cstore()
if reply from lond::store_handler() is delay:N (where N s the number of
transactions between the last retrieved in &initialize_storage() and the
last stored immediately before permanent storage of the current transaction.
&Apache::grades::makehidden() called if correct then incorrect,
where awarded >= 1 when correct (feedback on correctness enabled).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1269 2014/11/24 02:36:21 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 LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # 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_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$cachekeys) = @_;
360: my $items;
361: return unless (ref($cachekeys) eq 'ARRAY');
362: my $cachestr = join('&',@{$cachekeys});
363: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
364: return $response;
365: }
366:
367: # -------------------------------------------------- Non-critical communication
368: sub subreply {
369: my ($cmd,$server)=@_;
370: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
371: #
372: # With loncnew process trimming, there's a timing hole between lonc server
373: # process exit and the master server picking up the listen on the AF_UNIX
374: # socket. In that time interval, a lock file will exist:
375:
376: my $lockfile=$peerfile.".lock";
377: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
378: sleep(1);
379: }
380: # At this point, either a loncnew parent is listening or an old lonc
381: # or loncnew child is listening so we can connect or everything's dead.
382: #
383: # We'll give the connection a few tries before abandoning it. If
384: # connection is not possible, we'll con_lost back to the client.
385: #
386: my $client;
387: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
388: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
389: Type => SOCK_STREAM,
390: Timeout => 10);
391: if ($client) {
392: last; # Connected!
393: } else {
394: &create_connection(&hostname($server),$server);
395: }
396: sleep(1); # Try again later if failed connection.
397: }
398: my $answer;
399: if ($client) {
400: print $client "sethost:$server:$cmd\n";
401: $answer=<$client>;
402: if (!$answer) { $answer="con_lost"; }
403: chomp($answer);
404: } else {
405: $answer = 'con_lost'; # Failed connection.
406: }
407: return $answer;
408: }
409:
410: sub reply {
411: my ($cmd,$server)=@_;
412: unless (defined(&hostname($server))) { return 'no_such_host'; }
413: my $answer=subreply($cmd,$server);
414: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
415: &logthis("<font color=\"blue\">WARNING:".
416: " $cmd to $server returned $answer</font>");
417: }
418: return $answer;
419: }
420:
421: # ----------------------------------------------------------- Send USR1 to lonc
422:
423: sub reconlonc {
424: my ($lonid) = @_;
425: my $hostname = &hostname($lonid);
426: if ($lonid) {
427: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
428: if ($hostname && -e $peerfile) {
429: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
430: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: print $client ("reset_retries\n");
435: my $answer=<$client>;
436: #reset just this one.
437: }
438: }
439: return;
440: }
441:
442: &logthis("Trying to reconnect lonc");
443: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
444: if (open(my $fh,"<$loncfile")) {
445: my $loncpid=<$fh>;
446: chomp($loncpid);
447: if (kill 0 => $loncpid) {
448: &logthis("lonc at pid $loncpid responding, sending USR1");
449: kill USR1 => $loncpid;
450: sleep 1;
451: } else {
452: &logthis(
453: "<font color=\"blue\">WARNING:".
454: " lonc at pid $loncpid not responding, giving up</font>");
455: }
456: } else {
457: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
458: }
459: }
460:
461: # ------------------------------------------------------ Critical communication
462:
463: sub critical {
464: my ($cmd,$server)=@_;
465: unless (&hostname($server)) {
466: &logthis("<font color=\"blue\">WARNING:".
467: " Critical message to unknown server ($server)</font>");
468: return 'no_such_host';
469: }
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: &reconlonc("$perlvar{'lonSockDir'}/$server");
473: my $answer=reply($cmd,$server);
474: if ($answer eq 'con_lost') {
475: my $now=time;
476: my $middlename=$cmd;
477: $middlename=substr($middlename,0,16);
478: $middlename=~s/\W//g;
479: my $dfilename=
480: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
481: $dumpcount++;
482: {
483: my $dfh;
484: if (open($dfh,">$dfilename")) {
485: print $dfh "$cmd\n";
486: close($dfh);
487: }
488: }
489: sleep 2;
490: my $wcmd='';
491: {
492: my $dfh;
493: if (open($dfh,"<$dfilename")) {
494: $wcmd=<$dfh>;
495: close($dfh);
496: }
497: }
498: chomp($wcmd);
499: if ($wcmd eq $cmd) {
500: &logthis("<font color=\"blue\">WARNING: ".
501: "Connection buffer $dfilename: $cmd</font>");
502: &logperm("D:$server:$cmd");
503: return 'con_delayed';
504: } else {
505: &logthis("<font color=\"red\">CRITICAL:"
506: ." Critical connection failed: $server $cmd</font>");
507: &logperm("F:$server:$cmd");
508: return 'con_failed';
509: }
510: }
511: }
512: return $answer;
513: }
514:
515: # ------------------------------------------- check if return value is an error
516:
517: sub error {
518: my ($result) = @_;
519: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
520: if ($2 == 2) { return undef; }
521: return $1;
522: }
523: return undef;
524: }
525:
526: sub convert_and_load_session_env {
527: my ($lonidsdir,$handle)=@_;
528: my @profile;
529: {
530: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
531: if (!$opened) {
532: return 0;
533: }
534: flock($idf,LOCK_SH);
535: @profile=<$idf>;
536: close($idf);
537: }
538: my %temp_env;
539: foreach my $line (@profile) {
540: if ($line !~ m/=/) {
541: return 0;
542: }
543: chomp($line);
544: my ($envname,$envvalue)=split(/=/,$line,2);
545: $temp_env{&unescape($envname)} = &unescape($envvalue);
546: }
547: unlink("$lonidsdir/$handle.id");
548: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
549: 0640)) {
550: %disk_env = %temp_env;
551: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
552: untie(%disk_env);
553: }
554: return 1;
555: }
556:
557: # ------------------------------------------- Transfer profile into environment
558: my $env_loaded;
559: sub transfer_profile_to_env {
560: my ($lonidsdir,$handle,$force_transfer) = @_;
561: if (!$force_transfer && $env_loaded) { return; }
562:
563: if (!defined($lonidsdir)) {
564: $lonidsdir = $perlvar{'lonIDsDir'};
565: }
566: if (!defined($handle)) {
567: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
568: }
569:
570: my $convert;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return;
575: }
576: flock($idf,LOCK_SH);
577: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
578: &GDBM_READER(),0640)) {
579: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
580: untie(%disk_env);
581: } else {
582: $convert = 1;
583: }
584: }
585: if ($convert) {
586: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
587: &logthis("Failed to load session, or convert session.");
588: }
589: }
590:
591: my %remove;
592: while ( my $envname = each(%env) ) {
593: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
594: if ($time < time-300) {
595: $remove{$key}++;
596: }
597: }
598: }
599:
600: $env{'user.environment'} = "$lonidsdir/$handle.id";
601: $env_loaded=1;
602: foreach my $expired_key (keys(%remove)) {
603: &delenv($expired_key);
604: }
605: }
606:
607: # ---------------------------------------------------- Check for valid session
608: sub check_for_valid_session {
609: my ($r,$name,$userhashref) = @_;
610: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
611: if ($name eq '') {
612: $name = 'lonID';
613: }
614: my $lonid=$cookies{$name};
615: return undef if (!$lonid);
616:
617: my $handle=&LONCAPA::clean_handle($lonid->value);
618: my $lonidsdir;
619: if ($name eq 'lonDAV') {
620: $lonidsdir=$r->dir_config('lonDAVsessDir');
621: } else {
622: $lonidsdir=$r->dir_config('lonIDsDir');
623: }
624: return undef if (!-e "$lonidsdir/$handle.id");
625:
626: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
627: return undef if (!$opened);
628:
629: flock($idf,LOCK_SH);
630: my %disk_env;
631: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
632: &GDBM_READER(),0640)) {
633: return undef;
634: }
635:
636: if (!defined($disk_env{'user.name'})
637: || !defined($disk_env{'user.domain'})) {
638: return undef;
639: }
640:
641: if (ref($userhashref) eq 'HASH') {
642: $userhashref->{'name'} = $disk_env{'user.name'};
643: $userhashref->{'domain'} = $disk_env{'user.domain'};
644: }
645:
646: return $handle;
647: }
648:
649: sub timed_flock {
650: my ($file,$lock_type) = @_;
651: my $failed=0;
652: eval {
653: local $SIG{__DIE__}='DEFAULT';
654: local $SIG{ALRM}=sub {
655: $failed=1;
656: die("failed lock");
657: };
658: alarm(13);
659: flock($file,$lock_type);
660: alarm(0);
661: };
662: if ($failed) {
663: return undef;
664: } else {
665: return 1;
666: }
667: }
668:
669: # ---------------------------------------------------------- Append Environment
670:
671: sub appenv {
672: my ($newenv,$roles) = @_;
673: if (ref($newenv) eq 'HASH') {
674: foreach my $key (keys(%{$newenv})) {
675: my $refused = 0;
676: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
677: $refused = 1;
678: if (ref($roles) eq 'ARRAY') {
679: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
680: if (grep(/^\Q$role\E$/,@{$roles})) {
681: $refused = 0;
682: }
683: }
684: }
685: if ($refused) {
686: &logthis("<font color=\"blue\">WARNING: ".
687: "Attempt to modify environment ".$key." to ".$newenv->{$key}
688: .'</font>');
689: delete($newenv->{$key});
690: } else {
691: $env{$key}=$newenv->{$key};
692: }
693: }
694: my $opened = open(my $env_file,'+<',$env{'user.environment'});
695: if ($opened
696: && &timed_flock($env_file,LOCK_EX)
697: &&
698: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
699: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
700: while (my ($key,$value) = each(%{$newenv})) {
701: $disk_env{$key} = $value;
702: }
703: untie(%disk_env);
704: }
705: }
706: return 'ok';
707: }
708: # ----------------------------------------------------- Delete from Environment
709:
710: sub delenv {
711: my ($delthis,$regexp,$roles) = @_;
712: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
713: my $refused = 1;
714: if (ref($roles) eq 'ARRAY') {
715: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
716: if (grep(/^\Q$role\E$/,@{$roles})) {
717: $refused = 0;
718: }
719: }
720: if ($refused) {
721: &logthis("<font color=\"blue\">WARNING: ".
722: "Attempt to delete from environment ".$delthis);
723: return 'error';
724: }
725: }
726: my $opened = open(my $env_file,'+<',$env{'user.environment'});
727: if ($opened
728: && &timed_flock($env_file,LOCK_EX)
729: &&
730: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
731: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
732: foreach my $key (keys(%disk_env)) {
733: if ($regexp) {
734: if ($key=~/^$delthis/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: } else {
739: if ($key=~/^\Q$delthis\E/) {
740: delete($env{$key});
741: delete($disk_env{$key});
742: }
743: }
744: }
745: untie(%disk_env);
746: }
747: return 'ok';
748: }
749:
750: sub get_env_multiple {
751: my ($name) = @_;
752: my @values;
753: if (defined($env{$name})) {
754: # exists is it an array
755: if (ref($env{$name})) {
756: @values=@{ $env{$name} };
757: } else {
758: $values[0]=$env{$name};
759: }
760: }
761: return(@values);
762: }
763:
764: # ------------------------------------------------------------------- Locking
765:
766: sub set_lock {
767: my ($text)=@_;
768: $locknum++;
769: my $id=$$.'-'.$locknum;
770: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
771: 'session.lock.'.$id => $text});
772: return $id;
773: }
774:
775: sub get_locks {
776: my $num=0;
777: my %texts=();
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if ($lock=~/\w/) {
780: $num++;
781: $texts{$lock}=$env{'session.lock.'.$lock};
782: }
783: }
784: return ($num,%texts);
785: }
786:
787: sub remove_lock {
788: my ($id)=@_;
789: my $newlocks='';
790: foreach my $lock (split(/\,/,$env{'session.locks'})) {
791: if (($lock=~/\w/) && ($lock ne $id)) {
792: $newlocks.=','.$lock;
793: }
794: }
795: &appenv({'session.locks' => $newlocks});
796: &delenv('session.lock.'.$id);
797: }
798:
799: sub remove_all_locks {
800: my $activelocks=$env{'session.locks'};
801: foreach my $lock (split(/\,/,$env{'session.locks'})) {
802: if ($lock=~/\w/) {
803: &remove_lock($lock);
804: }
805: }
806: }
807:
808:
809: # ------------------------------------------ Find out current server userload
810: sub userload {
811: my $numusers=0;
812: {
813: opendir(LONIDS,$perlvar{'lonIDsDir'});
814: my $filename;
815: my $curtime=time;
816: while ($filename=readdir(LONIDS)) {
817: next if ($filename eq '.' || $filename eq '..');
818: next if ($filename =~ /publicuser_\d+\.id/);
819: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
820: if ($curtime-$mtime < 1800) { $numusers++; }
821: }
822: closedir(LONIDS);
823: }
824: my $userloadpercent=0;
825: my $maxuserload=$perlvar{'lonUserLoadLim'};
826: if ($maxuserload) {
827: $userloadpercent=100*$numusers/$maxuserload;
828: }
829: $userloadpercent=sprintf("%.2f",$userloadpercent);
830: return $userloadpercent;
831: }
832:
833: # ------------------------------ Find server with least workload from spare.tab
834:
835: sub spareserver {
836: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
837: my $spare_server;
838: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
839: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
840: : $userloadpercent;
841: my ($uint_dom,$remotesessions);
842: if (($udom ne '') && (&domain($udom) ne '')) {
843: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
844: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
845: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
846: $remotesessions = $udomdefaults{'remotesessions'};
847: }
848: my $spareshash = &this_host_spares($udom);
849: if (ref($spareshash) eq 'HASH') {
850: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
851: foreach my $try_server (@{ $spareshash->{'primary'} }) {
852: if ($uint_dom) {
853: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
854: $try_server));
855: }
856: ($spare_server, $lowest_load) =
857: &compare_server_load($try_server, $spare_server, $lowest_load);
858: }
859: }
860:
861: my $found_server = ($spare_server ne '' && $lowest_load < 100);
862:
863: if (!$found_server) {
864: if (ref($spareshash->{'default'}) eq 'ARRAY') {
865: foreach my $try_server (@{ $spareshash->{'default'} }) {
866: if ($uint_dom) {
867: next unless (&spare_can_host($udom,$uint_dom,
868: $remotesessions,$try_server));
869: }
870: ($spare_server, $lowest_load) =
871: &compare_server_load($try_server, $spare_server, $lowest_load);
872: }
873: }
874: }
875: }
876:
877: if (!$want_server_name) {
878: my $protocol = 'http';
879: if ($protocol{$spare_server} eq 'https') {
880: $protocol = $protocol{$spare_server};
881: }
882: if (defined($spare_server)) {
883: my $hostname = &hostname($spare_server);
884: if (defined($hostname)) {
885: $spare_server = $protocol.'://'.$hostname;
886: }
887: }
888: }
889: return $spare_server;
890: }
891:
892: sub compare_server_load {
893: my ($try_server, $spare_server, $lowest_load, $required) = @_;
894:
895: if ($required) {
896: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
897: my $remoterev = &get_server_loncaparev(undef,$try_server);
898: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
899: if (($major eq '' && $minor eq '') ||
900: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
901: return ($spare_server,$lowest_load);
902: }
903: }
904:
905: my $loadans = &reply('load', $try_server);
906: my $userloadans = &reply('userload',$try_server);
907:
908: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
909: return ($spare_server, $lowest_load); #didn't get a number from the server
910: }
911:
912: my $load;
913: if ($loadans =~ /\d/) {
914: if ($userloadans =~ /\d/) {
915: #both are numbers, pick the bigger one
916: $load = ($loadans > $userloadans) ? $loadans
917: : $userloadans;
918: } else {
919: $load = $loadans;
920: }
921: } else {
922: $load = $userloadans;
923: }
924:
925: if (($load =~ /\d/) && ($load < $lowest_load)) {
926: $spare_server = $try_server;
927: $lowest_load = $load;
928: }
929: return ($spare_server,$lowest_load);
930: }
931:
932: # --------------------------- ask offload servers if user already has a session
933: sub find_existing_session {
934: my ($udom,$uname) = @_;
935: my $spareshash = &this_host_spares($udom);
936: if (ref($spareshash) eq 'HASH') {
937: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
938: foreach my $try_server (@{ $spareshash->{'primary'} }) {
939: return $try_server if (&has_user_session($try_server, $udom, $uname));
940: }
941: }
942: if (ref($spareshash->{'default'}) eq 'ARRAY') {
943: foreach my $try_server (@{ $spareshash->{'default'} }) {
944: return $try_server if (&has_user_session($try_server, $udom, $uname));
945: }
946: }
947: }
948: return;
949: }
950:
951: # -------------------------------- ask if server already has a session for user
952: sub has_user_session {
953: my ($lonid,$udom,$uname) = @_;
954: my $result = &reply(join(':','userhassession',
955: map {&escape($_)} ($udom,$uname)),$lonid);
956: return 1 if ($result eq 'ok');
957:
958: return 0;
959: }
960:
961: # --------- determine least loaded server in a user's domain which allows login
962:
963: sub choose_server {
964: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
965: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
966: my %servers = &get_servers($udom);
967: my $lowest_load = 30000;
968: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
969: if ($skiploadbal) {
970: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
971: unless (defined($cached)) {
972: my $cachetime = 60*60*24;
973: my %domconfig =
974: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
975: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
976: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
977: $cachetime);
978: }
979: }
980: }
981: foreach my $lonhost (keys(%servers)) {
982: if ($skiploadbal) {
983: if (ref($balancers) eq 'HASH') {
984: next if (exists($balancers->{$lonhost}));
985: }
986: }
987: my $loginvia;
988: if ($checkloginvia) {
989: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
990: if ($loginvia) {
991: my ($server,$path) = split(/:/,$loginvia);
992: ($login_host, $lowest_load) =
993: &compare_server_load($server, $login_host, $lowest_load, $required);
994: if ($login_host eq $server) {
995: $portal_path = $path;
996: $isredirect = 1;
997: }
998: } else {
999: ($login_host, $lowest_load) =
1000: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1001: if ($login_host eq $lonhost) {
1002: $portal_path = '';
1003: $isredirect = '';
1004: }
1005: }
1006: } else {
1007: ($login_host, $lowest_load) =
1008: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1009: }
1010: }
1011: if ($login_host ne '') {
1012: $hostname = &hostname($login_host);
1013: }
1014: return ($login_host,$hostname,$portal_path,$isredirect);
1015: }
1016:
1017: # --------------------------------------------- Try to change a user's password
1018:
1019: sub changepass {
1020: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1021: $currentpass = &escape($currentpass);
1022: $newpass = &escape($newpass);
1023: my $lonhost = $perlvar{'lonHostID'};
1024: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1025: $server);
1026: if (! $answer) {
1027: &logthis("No reply on password change request to $server ".
1028: "by $uname in domain $udom.");
1029: } elsif ($answer =~ "^ok") {
1030: &logthis("$uname in $udom successfully changed their password ".
1031: "on $server.");
1032: } elsif ($answer =~ "^pwchange_failure") {
1033: &logthis("$uname in $udom was unable to change their password ".
1034: "on $server. The action was blocked by either lcpasswd ".
1035: "or pwchange");
1036: } elsif ($answer =~ "^non_authorized") {
1037: &logthis("$uname in $udom did not get their password correct when ".
1038: "attempting to change it on $server.");
1039: } elsif ($answer =~ "^auth_mode_error") {
1040: &logthis("$uname in $udom attempted to change their password despite ".
1041: "not being locally or internally authenticated on $server.");
1042: } elsif ($answer =~ "^unknown_user") {
1043: &logthis("$uname in $udom attempted to change their password ".
1044: "on $server but were unable to because $server is not ".
1045: "their home server.");
1046: } elsif ($answer =~ "^refused") {
1047: &logthis("$server refused to change $uname in $udom password because ".
1048: "it was sent an unencrypted request to change the password.");
1049: } elsif ($answer =~ "invalid_client") {
1050: &logthis("$server refused to change $uname in $udom password because ".
1051: "it was a reset by e-mail originating from an invalid server.");
1052: }
1053: return $answer;
1054: }
1055:
1056: # ----------------------- Try to determine user's current authentication scheme
1057:
1058: sub queryauthenticate {
1059: my ($uname,$udom)=@_;
1060: my $uhome=&homeserver($uname,$udom);
1061: if (!$uhome) {
1062: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1063: return 'no_host';
1064: }
1065: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1066: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1067: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1068: }
1069: return $answer;
1070: }
1071:
1072: # --------- Try to authenticate user from domain's lib servers (first this one)
1073:
1074: sub authenticate {
1075: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1076: $upass=&escape($upass);
1077: $uname= &LONCAPA::clean_username($uname);
1078: my $uhome=&homeserver($uname,$udom,1);
1079: my $newhome;
1080: if ((!$uhome) || ($uhome eq 'no_host')) {
1081: # Maybe the machine was offline and only re-appeared again recently?
1082: &reconlonc();
1083: # One more
1084: $uhome=&homeserver($uname,$udom,1);
1085: if (($uhome eq 'no_host') && $checkdefauth) {
1086: if (defined(&domain($udom,'primary'))) {
1087: $newhome=&domain($udom,'primary');
1088: }
1089: if ($newhome ne '') {
1090: $uhome = $newhome;
1091: }
1092: }
1093: if ((!$uhome) || ($uhome eq 'no_host')) {
1094: &logthis("User $uname at $udom is unknown in authenticate");
1095: return 'no_host';
1096: }
1097: }
1098: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1099: if ($answer eq 'authorized') {
1100: if ($newhome) {
1101: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1102: return 'no_account_on_host';
1103: } else {
1104: &logthis("User $uname at $udom authorized by $uhome");
1105: return $uhome;
1106: }
1107: }
1108: if ($answer eq 'non_authorized') {
1109: &logthis("User $uname at $udom rejected by $uhome");
1110: return 'no_host';
1111: }
1112: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1113: return 'no_host';
1114: }
1115:
1116: sub can_host_session {
1117: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1118: my $canhost = 1;
1119: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1120: if (ref($remotesessions) eq 'HASH') {
1121: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1123: $canhost = 0;
1124: } else {
1125: $canhost = 1;
1126: }
1127: }
1128: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1129: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1130: $canhost = 1;
1131: } else {
1132: $canhost = 0;
1133: }
1134: }
1135: if ($canhost) {
1136: if ($remotesessions->{'version'} ne '') {
1137: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1138: if ($reqmajor ne '' && $reqminor ne '') {
1139: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1140: my $major = $1;
1141: my $minor = $2;
1142: if (($major < $reqmajor ) ||
1143: (($major == $reqmajor) && ($minor < $reqminor))) {
1144: $canhost = 0;
1145: }
1146: } else {
1147: $canhost = 0;
1148: }
1149: }
1150: }
1151: }
1152: }
1153: if ($canhost) {
1154: if (ref($hostedsessions) eq 'HASH') {
1155: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1156: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1157: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1158: if (($uint_dom ne '') &&
1159: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1160: $canhost = 0;
1161: } else {
1162: $canhost = 1;
1163: }
1164: }
1165: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1166: if (($uint_dom ne '') &&
1167: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1168: $canhost = 1;
1169: } else {
1170: $canhost = 0;
1171: }
1172: }
1173: }
1174: }
1175: return $canhost;
1176: }
1177:
1178: sub spare_can_host {
1179: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1180: my $canhost=1;
1181: my @intdoms;
1182: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1183: if (ref($internet_names) eq 'ARRAY') {
1184: @intdoms = @{$internet_names};
1185: }
1186: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1187: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1188: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1189: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1190: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1191: $canhost = &can_host_session($udom,$try_server,$remoterev,
1192: $remotesessions,
1193: $defdomdefaults{'hostedsessions'});
1194: }
1195: return $canhost;
1196: }
1197:
1198: sub this_host_spares {
1199: my ($dom) = @_;
1200: my ($dom_in_use,$lonhost_in_use,$result);
1201: my @hosts = ¤t_machine_ids();
1202: foreach my $lonhost (@hosts) {
1203: if (&host_domain($lonhost) eq $dom) {
1204: $dom_in_use = $dom;
1205: $lonhost_in_use = $lonhost;
1206: last;
1207: }
1208: }
1209: if ($dom_in_use ne '') {
1210: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1211: }
1212: if (ref($result) ne 'HASH') {
1213: $lonhost_in_use = $perlvar{'lonHostID'};
1214: $dom_in_use = &host_domain($lonhost_in_use);
1215: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1216: if (ref($result) ne 'HASH') {
1217: $result = \%spareid;
1218: }
1219: }
1220: return $result;
1221: }
1222:
1223: sub spares_for_offload {
1224: my ($dom_in_use,$lonhost_in_use) = @_;
1225: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1226: if (defined($cached)) {
1227: return $result;
1228: } else {
1229: my $cachetime = 60*60*24;
1230: my %domconfig =
1231: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1232: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1233: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1234: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1235: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1236: }
1237: }
1238: }
1239: }
1240: return;
1241: }
1242:
1243: sub get_lonbalancer_config {
1244: my ($servers) = @_;
1245: my ($currbalancer,$currtargets);
1246: if (ref($servers) eq 'HASH') {
1247: foreach my $server (keys(%{$servers})) {
1248: my %what = (
1249: spareid => 1,
1250: perlvar => 1,
1251: );
1252: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1253: if ($result eq 'ok') {
1254: if (ref($returnhash) eq 'HASH') {
1255: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1256: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1257: $currbalancer = $server;
1258: $currtargets = {};
1259: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1260: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1261: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1262: }
1263: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1264: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1265: }
1266: }
1267: last;
1268: }
1269: }
1270: }
1271: }
1272: }
1273: }
1274: return ($currbalancer,$currtargets);
1275: }
1276:
1277: sub check_loadbalancing {
1278: my ($uname,$udom) = @_;
1279: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1280: $rule_in_effect,$offloadto,$otherserver);
1281: my $lonhost = $perlvar{'lonHostID'};
1282: my @hosts = ¤t_machine_ids();
1283: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1284: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1285: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1286: my $serverhomedom = &host_domain($lonhost);
1287:
1288: my $cachetime = 60*60*24;
1289:
1290: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1291: $dom_in_use = $udom;
1292: $homeintdom = 1;
1293: } else {
1294: $dom_in_use = $serverhomedom;
1295: }
1296: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1297: unless (defined($cached)) {
1298: my %domconfig =
1299: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1300: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1301: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1302: }
1303: }
1304: if (ref($result) eq 'HASH') {
1305: ($is_balancer,$currtargets,$currrules) =
1306: &check_balancer_result($result,@hosts);
1307: if ($is_balancer) {
1308: if (ref($currrules) eq 'HASH') {
1309: if ($homeintdom) {
1310: if ($uname ne '') {
1311: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1312: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1313: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1314: $rule_in_effect = $currrules->{'_LC_author'};
1315: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1316: $rule_in_effect = $currrules->{'_LC_adv'}
1317: }
1318: }
1319: if ($rule_in_effect eq '') {
1320: my %userenv = &userenvironment($udom,$uname,'inststatus');
1321: if ($userenv{'inststatus'} ne '') {
1322: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1323: my ($othertitle,$usertypes,$types) =
1324: &Apache::loncommon::sorted_inst_types($udom);
1325: if (ref($types) eq 'ARRAY') {
1326: foreach my $type (@{$types}) {
1327: if (grep(/^\Q$type\E$/,@statuses)) {
1328: if (exists($currrules->{$type})) {
1329: $rule_in_effect = $currrules->{$type};
1330: }
1331: }
1332: }
1333: }
1334: } else {
1335: if (exists($currrules->{'default'})) {
1336: $rule_in_effect = $currrules->{'default'};
1337: }
1338: }
1339: }
1340: } else {
1341: if (exists($currrules->{'default'})) {
1342: $rule_in_effect = $currrules->{'default'};
1343: }
1344: }
1345: } else {
1346: if ($currrules->{'_LC_external'} ne '') {
1347: $rule_in_effect = $currrules->{'_LC_external'};
1348: }
1349: }
1350: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1351: $uname,$udom);
1352: }
1353: }
1354: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1355: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1356: unless (defined($cached)) {
1357: my %domconfig =
1358: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1359: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1360: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1361: }
1362: }
1363: if (ref($result) eq 'HASH') {
1364: ($is_balancer,$currtargets,$currrules) =
1365: &check_balancer_result($result,@hosts);
1366: if ($is_balancer) {
1367: if (ref($currrules) eq 'HASH') {
1368: if ($currrules->{'_LC_internetdom'} ne '') {
1369: $rule_in_effect = $currrules->{'_LC_internetdom'};
1370: }
1371: }
1372: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1373: $uname,$udom);
1374: }
1375: } else {
1376: if ($perlvar{'lonBalancer'} eq 'yes') {
1377: $is_balancer = 1;
1378: $offloadto = &this_host_spares($dom_in_use);
1379: }
1380: }
1381: } else {
1382: if ($perlvar{'lonBalancer'} eq 'yes') {
1383: $is_balancer = 1;
1384: $offloadto = &this_host_spares($dom_in_use);
1385: }
1386: }
1387: if ($is_balancer) {
1388: my $lowest_load = 30000;
1389: if (ref($offloadto) eq 'HASH') {
1390: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1391: foreach my $try_server (@{$offloadto->{'primary'}}) {
1392: ($otherserver,$lowest_load) =
1393: &compare_server_load($try_server,$otherserver,$lowest_load);
1394: }
1395: }
1396: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1397:
1398: if (!$found_server) {
1399: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1400: foreach my $try_server (@{$offloadto->{'default'}}) {
1401: ($otherserver,$lowest_load) =
1402: &compare_server_load($try_server,$otherserver,$lowest_load);
1403: }
1404: }
1405: }
1406: } elsif (ref($offloadto) eq 'ARRAY') {
1407: if (@{$offloadto} == 1) {
1408: $otherserver = $offloadto->[0];
1409: } elsif (@{$offloadto} > 1) {
1410: foreach my $try_server (@{$offloadto}) {
1411: ($otherserver,$lowest_load) =
1412: &compare_server_load($try_server,$otherserver,$lowest_load);
1413: }
1414: }
1415: }
1416: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1417: $is_balancer = 0;
1418: if ($uname ne '' && $udom ne '') {
1419: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1420:
1421: &appenv({'user.loadbalexempt' => $lonhost,
1422: 'user.loadbalcheck.time' => time});
1423: }
1424: }
1425: }
1426: }
1427: return ($is_balancer,$otherserver);
1428: }
1429:
1430: sub check_balancer_result {
1431: my ($result,@hosts) = @_;
1432: my ($is_balancer,$currtargets,$currrules);
1433: if (ref($result) eq 'HASH') {
1434: if ($result->{'lonhost'} ne '') {
1435: my $currbalancer = $result->{'lonhost'};
1436: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1437: $is_balancer = 1;
1438: $currtargets = $result->{'targets'};
1439: $currrules = $result->{'rules'};
1440: }
1441: } else {
1442: foreach my $key (keys(%{$result})) {
1443: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1444: (ref($result->{$key}) eq 'HASH')) {
1445: $is_balancer = 1;
1446: $currrules = $result->{$key}{'rules'};
1447: $currtargets = $result->{$key}{'targets'};
1448: last;
1449: }
1450: }
1451: }
1452: }
1453: return ($is_balancer,$currtargets,$currrules);
1454: }
1455:
1456: sub get_loadbalancer_targets {
1457: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1458: my $offloadto;
1459: if ($rule_in_effect eq 'none') {
1460: return [$perlvar{'lonHostID'}];
1461: } elsif ($rule_in_effect eq '') {
1462: $offloadto = $currtargets;
1463: } else {
1464: if ($rule_in_effect eq 'homeserver') {
1465: my $homeserver = &homeserver($uname,$udom);
1466: if ($homeserver ne 'no_host') {
1467: $offloadto = [$homeserver];
1468: }
1469: } elsif ($rule_in_effect eq 'externalbalancer') {
1470: my %domconfig =
1471: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1472: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1473: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1474: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1475: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1476: }
1477: }
1478: } else {
1479: my %servers = &internet_dom_servers($udom);
1480: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1481: if (&hostname($remotebalancer) ne '') {
1482: $offloadto = [$remotebalancer];
1483: }
1484: }
1485: } elsif (&hostname($rule_in_effect) ne '') {
1486: $offloadto = [$rule_in_effect];
1487: }
1488: }
1489: return $offloadto;
1490: }
1491:
1492: sub internet_dom_servers {
1493: my ($dom) = @_;
1494: my (%uniqservers,%servers);
1495: my $primaryserver = &hostname(&domain($dom,'primary'));
1496: my @machinedoms = &machine_domains($primaryserver);
1497: foreach my $mdom (@machinedoms) {
1498: my %currservers = %servers;
1499: my %server = &get_servers($mdom);
1500: %servers = (%currservers,%server);
1501: }
1502: my %by_hostname;
1503: foreach my $id (keys(%servers)) {
1504: push(@{$by_hostname{$servers{$id}}},$id);
1505: }
1506: foreach my $hostname (sort(keys(%by_hostname))) {
1507: if (@{$by_hostname{$hostname}} > 1) {
1508: my $match = 0;
1509: foreach my $id (@{$by_hostname{$hostname}}) {
1510: if (&host_domain($id) eq $dom) {
1511: $uniqservers{$id} = $hostname;
1512: $match = 1;
1513: }
1514: }
1515: unless ($match) {
1516: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1517: }
1518: } else {
1519: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1520: }
1521: }
1522: return %uniqservers;
1523: }
1524:
1525: # ---------------------- Find the homebase for a user from domain's lib servers
1526:
1527: my %homecache;
1528: sub homeserver {
1529: my ($uname,$udom,$ignoreBadCache)=@_;
1530: my $index="$uname:$udom";
1531:
1532: if (exists($homecache{$index})) { return $homecache{$index}; }
1533:
1534: my %servers = &get_servers($udom,'library');
1535: foreach my $tryserver (keys(%servers)) {
1536: next if ($ignoreBadCache ne 'true' &&
1537: exists($badServerCache{$tryserver}));
1538:
1539: my $answer=reply("home:$udom:$uname",$tryserver);
1540: if ($answer eq 'found') {
1541: delete($badServerCache{$tryserver});
1542: return $homecache{$index}=$tryserver;
1543: } elsif ($answer eq 'no_host') {
1544: $badServerCache{$tryserver}=1;
1545: }
1546: }
1547: return 'no_host';
1548: }
1549:
1550: # ------------------------------------- Find the usernames behind a list of IDs
1551:
1552: sub idget {
1553: my ($udom,@ids)=@_;
1554: my %returnhash=();
1555:
1556: my %servers = &get_servers($udom,'library');
1557: foreach my $tryserver (keys(%servers)) {
1558: my $idlist=join('&',@ids);
1559: $idlist=~tr/A-Z/a-z/;
1560: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1561: my @answer=();
1562: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1563: @answer=split(/\&/,$reply);
1564: } ;
1565: my $i;
1566: for ($i=0;$i<=$#ids;$i++) {
1567: if ($answer[$i]) {
1568: $returnhash{$ids[$i]}=$answer[$i];
1569: }
1570: }
1571: }
1572: return %returnhash;
1573: }
1574:
1575: # ------------------------------------- Find the IDs behind a list of usernames
1576:
1577: sub idrget {
1578: my ($udom,@unames)=@_;
1579: my %returnhash=();
1580: foreach my $uname (@unames) {
1581: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1582: }
1583: return %returnhash;
1584: }
1585:
1586: # ------------------------------- Store away a list of names and associated IDs
1587:
1588: sub idput {
1589: my ($udom,%ids)=@_;
1590: my %servers=();
1591: foreach my $uname (keys(%ids)) {
1592: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1593: my $uhom=&homeserver($uname,$udom);
1594: if ($uhom ne 'no_host') {
1595: my $id=&escape($ids{$uname});
1596: $id=~tr/A-Z/a-z/;
1597: my $esc_unam=&escape($uname);
1598: if ($servers{$uhom}) {
1599: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1600: } else {
1601: $servers{$uhom}=$id.'='.$esc_unam;
1602: }
1603: }
1604: }
1605: foreach my $server (keys(%servers)) {
1606: &critical('idput:'.$udom.':'.$servers{$server},$server);
1607: }
1608: }
1609:
1610: # ---------------------------------------- Delete unwanted IDs from ids.db file
1611:
1612: sub iddel {
1613: my ($udom,$idshashref,$uhome)=@_;
1614: my %result=();
1615: unless (ref($idshashref) eq 'HASH') {
1616: return %result;
1617: }
1618: my %servers=();
1619: while (my ($id,$uname) = each(%{$idshashref})) {
1620: my $uhom;
1621: if ($uhome) {
1622: $uhom = $uhome;
1623: } else {
1624: $uhom=&homeserver($uname,$udom);
1625: }
1626: if ($uhom ne 'no_host') {
1627: if ($servers{$uhom}) {
1628: $servers{$uhom}.='&'.&escape($id);
1629: } else {
1630: $servers{$uhom}=&escape($id);
1631: }
1632: }
1633: }
1634: foreach my $server (keys(%servers)) {
1635: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1636: }
1637: return %result;
1638: }
1639:
1640: # ------------------------------dump from db file owned by domainconfig user
1641: sub dump_dom {
1642: my ($namespace, $udom, $regexp) = @_;
1643:
1644: $udom ||= $env{'user.domain'};
1645:
1646: return () unless $udom;
1647:
1648: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1649: }
1650:
1651: # ------------------------------------------ get items from domain db files
1652:
1653: sub get_dom {
1654: my ($namespace,$storearr,$udom,$uhome)=@_;
1655: return if ($udom eq 'public');
1656: my $items='';
1657: foreach my $item (@$storearr) {
1658: $items.=&escape($item).'&';
1659: }
1660: $items=~s/\&$//;
1661: if (!$udom) {
1662: $udom=$env{'user.domain'};
1663: return if ($udom eq 'public');
1664: if (defined(&domain($udom,'primary'))) {
1665: $uhome=&domain($udom,'primary');
1666: } else {
1667: undef($uhome);
1668: }
1669: } else {
1670: if (!$uhome) {
1671: if (defined(&domain($udom,'primary'))) {
1672: $uhome=&domain($udom,'primary');
1673: }
1674: }
1675: }
1676: if ($udom && $uhome && ($uhome ne 'no_host')) {
1677: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1678: my %returnhash;
1679: if ($rep eq '' || $rep =~ /^error: 2 /) {
1680: return %returnhash;
1681: }
1682: my @pairs=split(/\&/,$rep);
1683: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1684: return @pairs;
1685: }
1686: my $i=0;
1687: foreach my $item (@$storearr) {
1688: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1689: $i++;
1690: }
1691: return %returnhash;
1692: } else {
1693: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1694: }
1695: }
1696:
1697: # -------------------------------------------- put items in domain db files
1698:
1699: sub put_dom {
1700: my ($namespace,$storehash,$udom,$uhome)=@_;
1701: if (!$udom) {
1702: $udom=$env{'user.domain'};
1703: if (defined(&domain($udom,'primary'))) {
1704: $uhome=&domain($udom,'primary');
1705: } else {
1706: undef($uhome);
1707: }
1708: } else {
1709: if (!$uhome) {
1710: if (defined(&domain($udom,'primary'))) {
1711: $uhome=&domain($udom,'primary');
1712: }
1713: }
1714: }
1715: if ($udom && $uhome && ($uhome ne 'no_host')) {
1716: my $items='';
1717: foreach my $item (keys(%$storehash)) {
1718: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1719: }
1720: $items=~s/\&$//;
1721: return &reply("putdom:$udom:$namespace:$items",$uhome);
1722: } else {
1723: &logthis("put_dom failed - no homeserver and/or domain");
1724: }
1725: }
1726:
1727: # --------------------- newput for items in db file owned by domainconfig user
1728: sub newput_dom {
1729: my ($namespace,$storehash,$udom) = @_;
1730: my $result;
1731: if (!$udom) {
1732: $udom=$env{'user.domain'};
1733: }
1734: if ($udom) {
1735: my $uname = &get_domainconfiguser($udom);
1736: $result = &newput($namespace,$storehash,$udom,$uname);
1737: }
1738: return $result;
1739: }
1740:
1741: # --------------------- delete for items in db file owned by domainconfig user
1742: sub del_dom {
1743: my ($namespace,$storearr,$udom)=@_;
1744: if (ref($storearr) eq 'ARRAY') {
1745: if (!$udom) {
1746: $udom=$env{'user.domain'};
1747: }
1748: if ($udom) {
1749: my $uname = &get_domainconfiguser($udom);
1750: return &del($namespace,$storearr,$udom,$uname);
1751: }
1752: }
1753: }
1754:
1755: # ----------------------------------construct domainconfig user for a domain
1756: sub get_domainconfiguser {
1757: my ($udom) = @_;
1758: return $udom.'-domainconfig';
1759: }
1760:
1761: sub retrieve_inst_usertypes {
1762: my ($udom) = @_;
1763: my (%returnhash,@order);
1764: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1765: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1766: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1767: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1768: } else {
1769: if (defined(&domain($udom,'primary'))) {
1770: my $uhome=&domain($udom,'primary');
1771: my $rep=&reply("inst_usertypes:$udom",$uhome);
1772: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1773: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1774: return (\%returnhash,\@order);
1775: }
1776: my ($hashitems,$orderitems) = split(/:/,$rep);
1777: my @pairs=split(/\&/,$hashitems);
1778: foreach my $item (@pairs) {
1779: my ($key,$value)=split(/=/,$item,2);
1780: $key = &unescape($key);
1781: next if ($key =~ /^error: 2 /);
1782: $returnhash{$key}=&thaw_unescape($value);
1783: }
1784: my @esc_order = split(/\&/,$orderitems);
1785: foreach my $item (@esc_order) {
1786: push(@order,&unescape($item));
1787: }
1788: } else {
1789: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1790: }
1791: return (\%returnhash,\@order);
1792: }
1793: }
1794:
1795: sub is_domainimage {
1796: my ($url) = @_;
1797: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1798: if (&domain($1) ne '') {
1799: return '1';
1800: }
1801: }
1802: return;
1803: }
1804:
1805: sub inst_directory_query {
1806: my ($srch) = @_;
1807: my $udom = $srch->{'srchdomain'};
1808: my %results;
1809: my $homeserver = &domain($udom,'primary');
1810: my $outcome;
1811: if ($homeserver ne '') {
1812: my $queryid=&reply("querysend:instdirsearch:".
1813: &escape($srch->{'srchby'}).':'.
1814: &escape($srch->{'srchterm'}).':'.
1815: &escape($srch->{'srchtype'}),$homeserver);
1816: my $host=&hostname($homeserver);
1817: if ($queryid !~/^\Q$host\E\_/) {
1818: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1819: return;
1820: }
1821: my $response = &get_query_reply($queryid);
1822: my $maxtries = 5;
1823: my $tries = 1;
1824: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1825: $response = &get_query_reply($queryid);
1826: $tries ++;
1827: }
1828:
1829: if (!&error($response) && $response ne 'refused') {
1830: if ($response eq 'unavailable') {
1831: $outcome = $response;
1832: } else {
1833: $outcome = 'ok';
1834: my @matches = split(/\n/,$response);
1835: foreach my $match (@matches) {
1836: my ($key,$value) = split(/=/,$match);
1837: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1838: }
1839: }
1840: }
1841: }
1842: return ($outcome,%results);
1843: }
1844:
1845: sub usersearch {
1846: my ($srch) = @_;
1847: my $dom = $srch->{'srchdomain'};
1848: my %results;
1849: my %libserv = &all_library();
1850: my $query = 'usersearch';
1851: foreach my $tryserver (keys(%libserv)) {
1852: if (&host_domain($tryserver) eq $dom) {
1853: my $host=&hostname($tryserver);
1854: my $queryid=
1855: &reply("querysend:".&escape($query).':'.
1856: &escape($srch->{'srchby'}).':'.
1857: &escape($srch->{'srchtype'}).':'.
1858: &escape($srch->{'srchterm'}),$tryserver);
1859: if ($queryid !~/^\Q$host\E\_/) {
1860: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1861: next;
1862: }
1863: my $reply = &get_query_reply($queryid);
1864: my $maxtries = 1;
1865: my $tries = 1;
1866: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1867: $reply = &get_query_reply($queryid);
1868: $tries ++;
1869: }
1870: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1871: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1872: } else {
1873: my @matches;
1874: if ($reply =~ /\n/) {
1875: @matches = split(/\n/,$reply);
1876: } else {
1877: @matches = split(/\&/,$reply);
1878: }
1879: foreach my $match (@matches) {
1880: my ($uname,$udom,%userhash);
1881: foreach my $entry (split(/:/,$match)) {
1882: my ($key,$value) =
1883: map {&unescape($_);} split(/=/,$entry);
1884: $userhash{$key} = $value;
1885: if ($key eq 'username') {
1886: $uname = $value;
1887: } elsif ($key eq 'domain') {
1888: $udom = $value;
1889: }
1890: }
1891: $results{$uname.':'.$udom} = \%userhash;
1892: }
1893: }
1894: }
1895: }
1896: return %results;
1897: }
1898:
1899: sub get_instuser {
1900: my ($udom,$uname,$id) = @_;
1901: my $homeserver = &domain($udom,'primary');
1902: my ($outcome,%results);
1903: if ($homeserver ne '') {
1904: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1905: &escape($id).':'.&escape($udom),$homeserver);
1906: my $host=&hostname($homeserver);
1907: if ($queryid !~/^\Q$host\E\_/) {
1908: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1909: return;
1910: }
1911: my $response = &get_query_reply($queryid);
1912: my $maxtries = 5;
1913: my $tries = 1;
1914: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1915: $response = &get_query_reply($queryid);
1916: $tries ++;
1917: }
1918: if (!&error($response) && $response ne 'refused') {
1919: if ($response eq 'unavailable') {
1920: $outcome = $response;
1921: } else {
1922: $outcome = 'ok';
1923: my @matches = split(/\n/,$response);
1924: foreach my $match (@matches) {
1925: my ($key,$value) = split(/=/,$match);
1926: $results{&unescape($key)} = &thaw_unescape($value);
1927: }
1928: }
1929: }
1930: }
1931: my %userinfo;
1932: if (ref($results{$uname}) eq 'HASH') {
1933: %userinfo = %{$results{$uname}};
1934: }
1935: return ($outcome,%userinfo);
1936: }
1937:
1938: sub inst_rulecheck {
1939: my ($udom,$uname,$id,$item,$rules) = @_;
1940: my %returnhash;
1941: if ($udom ne '') {
1942: if (ref($rules) eq 'ARRAY') {
1943: @{$rules} = map {&escape($_);} (@{$rules});
1944: my $rulestr = join(':',@{$rules});
1945: my $homeserver=&domain($udom,'primary');
1946: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1947: my $response;
1948: if ($item eq 'username') {
1949: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1950: ':'.&escape($uname).':'.$rulestr,
1951: $homeserver));
1952: } elsif ($item eq 'id') {
1953: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1954: ':'.&escape($id).':'.$rulestr,
1955: $homeserver));
1956: } elsif ($item eq 'selfcreate') {
1957: $response=&unescape(&reply('instselfcreatecheck:'.
1958: &escape($udom).':'.&escape($uname).
1959: ':'.$rulestr,$homeserver));
1960: }
1961: if ($response ne 'refused') {
1962: my @pairs=split(/\&/,$response);
1963: foreach my $item (@pairs) {
1964: my ($key,$value)=split(/=/,$item,2);
1965: $key = &unescape($key);
1966: next if ($key =~ /^error: 2 /);
1967: $returnhash{$key}=&thaw_unescape($value);
1968: }
1969: }
1970: }
1971: }
1972: }
1973: return %returnhash;
1974: }
1975:
1976: sub inst_userrules {
1977: my ($udom,$check) = @_;
1978: my (%ruleshash,@ruleorder);
1979: if ($udom ne '') {
1980: my $homeserver=&domain($udom,'primary');
1981: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1982: my $response;
1983: if ($check eq 'id') {
1984: $response=&reply('instidrules:'.&escape($udom),
1985: $homeserver);
1986: } elsif ($check eq 'email') {
1987: $response=&reply('instemailrules:'.&escape($udom),
1988: $homeserver);
1989: } else {
1990: $response=&reply('instuserrules:'.&escape($udom),
1991: $homeserver);
1992: }
1993: if (($response ne 'refused') && ($response ne 'error') &&
1994: ($response ne 'unknown_cmd') &&
1995: ($response ne 'no_such_host')) {
1996: my ($hashitems,$orderitems) = split(/:/,$response);
1997: my @pairs=split(/\&/,$hashitems);
1998: foreach my $item (@pairs) {
1999: my ($key,$value)=split(/=/,$item,2);
2000: $key = &unescape($key);
2001: next if ($key =~ /^error: 2 /);
2002: $ruleshash{$key}=&thaw_unescape($value);
2003: }
2004: my @esc_order = split(/\&/,$orderitems);
2005: foreach my $item (@esc_order) {
2006: push(@ruleorder,&unescape($item));
2007: }
2008: }
2009: }
2010: }
2011: return (\%ruleshash,\@ruleorder);
2012: }
2013:
2014: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2015:
2016: sub get_domain_defaults {
2017: my ($domain,$ignore_cache) = @_;
2018: return if (($domain eq '') || ($domain eq 'public'));
2019: my $cachetime = 60*60*24;
2020: unless ($ignore_cache) {
2021: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2022: if (defined($cached)) {
2023: if (ref($result) eq 'HASH') {
2024: return %{$result};
2025: }
2026: }
2027: }
2028: my %domdefaults;
2029: my %domconfig =
2030: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2031: 'requestcourses','inststatus',
2032: 'coursedefaults','usersessions',
2033: 'requestauthor','selfenrollment',
2034: 'coursecategories'],$domain);
2035: my @coursetypes = ('official','unofficial','community','textbook');
2036: if (ref($domconfig{'defaults'}) eq 'HASH') {
2037: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2038: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2039: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2040: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2041: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2042: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2043: } else {
2044: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2045: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2046: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2047: }
2048: if (ref($domconfig{'quotas'}) eq 'HASH') {
2049: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2050: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2051: } else {
2052: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2053: }
2054: my @usertools = ('aboutme','blog','webdav','portfolio');
2055: foreach my $item (@usertools) {
2056: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2057: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2058: }
2059: }
2060: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2061: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2062: }
2063: }
2064: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2065: foreach my $item ('official','unofficial','community','textbook') {
2066: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2067: }
2068: }
2069: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2070: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2071: }
2072: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2073: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2074: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2075: }
2076: }
2077: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2078: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2079: foreach my $type (@coursetypes) {
2080: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2081: unless ($type eq 'community') {
2082: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2083: }
2084: }
2085: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2086: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2087: }
2088: }
2089: }
2090: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2091: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2092: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2093: }
2094: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2095: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2096: }
2097: }
2098: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2099: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2100: my @settings = ('types','registered','enroll_dates','access_dates','section',
2101: 'approval','limit');
2102: foreach my $type (@coursetypes) {
2103: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2104: my @mgrdc = ();
2105: foreach my $item (@settings) {
2106: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2107: push(@mgrdc,$item);
2108: }
2109: }
2110: if (@mgrdc) {
2111: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2112: }
2113: }
2114: }
2115: }
2116: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2117: foreach my $type (@coursetypes) {
2118: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2119: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2120: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2121: }
2122: }
2123: }
2124: }
2125: }
2126: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2127: $domdefaults{'catauth'} = 'std';
2128: $domdefaults{'catunauth'} = 'std';
2129: if ($domconfig{'coursecategories'}{'auth'}) {
2130: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2131: }
2132: if ($domconfig{'coursecategories'}{'unauth'}) {
2133: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2134: }
2135: }
2136: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2137: return %domdefaults;
2138: }
2139:
2140: # --------------------------------------------------- Assign a key to a student
2141:
2142: sub assign_access_key {
2143: #
2144: # a valid key looks like uname:udom#comments
2145: # comments are being appended
2146: #
2147: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2148: $kdom=
2149: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2150: $knum=
2151: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2152: $cdom=
2153: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2154: $cnum=
2155: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2156: $udom=$env{'user.name'} unless (defined($udom));
2157: $uname=$env{'user.domain'} unless (defined($uname));
2158: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2159: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2160: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2161: # assigned to this person
2162: # - this should not happen,
2163: # unless something went wrong
2164: # the first time around
2165: # ready to assign
2166: $logentry=$1.'; '.$logentry;
2167: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2168: $kdom,$knum) eq 'ok') {
2169: # key now belongs to user
2170: my $envkey='key.'.$cdom.'_'.$cnum;
2171: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2172: &appenv({'environment.'.$envkey => $ckey});
2173: return 'ok';
2174: } else {
2175: return
2176: 'error: Count not permanently assign key, will need to be re-entered later.';
2177: }
2178: } else {
2179: return 'error: Could not assign key, try again later.';
2180: }
2181: } elsif (!$existing{$ckey}) {
2182: # the key does not exist
2183: return 'error: The key does not exist';
2184: } else {
2185: # the key is somebody else's
2186: return 'error: The key is already in use';
2187: }
2188: }
2189:
2190: # ------------------------------------------ put an additional comment on a key
2191:
2192: sub comment_access_key {
2193: #
2194: # a valid key looks like uname:udom#comments
2195: # comments are being appended
2196: #
2197: my ($ckey,$cdom,$cnum,$logentry)=@_;
2198: $cdom=
2199: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2200: $cnum=
2201: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2202: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2203: if ($existing{$ckey}) {
2204: $existing{$ckey}.='; '.$logentry;
2205: # ready to assign
2206: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2207: $cdom,$cnum) eq 'ok') {
2208: return 'ok';
2209: } else {
2210: return 'error: Count not store comment.';
2211: }
2212: } else {
2213: # the key does not exist
2214: return 'error: The key does not exist';
2215: }
2216: }
2217:
2218: # ------------------------------------------------------ Generate a set of keys
2219:
2220: sub generate_access_keys {
2221: my ($number,$cdom,$cnum,$logentry)=@_;
2222: $cdom=
2223: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2224: $cnum=
2225: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2226: unless (&allowed('mky',$cdom)) { return 0; }
2227: unless (($cdom) && ($cnum)) { return 0; }
2228: if ($number>10000) { return 0; }
2229: sleep(2); # make sure don't get same seed twice
2230: srand(time()^($$+($$<<15))); # from "Programming Perl"
2231: my $total=0;
2232: for (my $i=1;$i<=$number;$i++) {
2233: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2234: sprintf("%lx",int(100000*rand)).'-'.
2235: sprintf("%lx",int(100000*rand));
2236: $newkey=~s/1/g/g; # folks mix up 1 and l
2237: $newkey=~s/0/h/g; # and also 0 and O
2238: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2239: if ($existing{$newkey}) {
2240: $i--;
2241: } else {
2242: if (&put('accesskeys',
2243: { $newkey => '# generated '.localtime().
2244: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2245: '; '.$logentry },
2246: $cdom,$cnum) eq 'ok') {
2247: $total++;
2248: }
2249: }
2250: }
2251: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2252: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2253: return $total;
2254: }
2255:
2256: # ------------------------------------------------------- Validate an accesskey
2257:
2258: sub validate_access_key {
2259: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2260: $cdom=
2261: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2262: $cnum=
2263: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2264: $udom=$env{'user.domain'} unless (defined($udom));
2265: $uname=$env{'user.name'} unless (defined($uname));
2266: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2267: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2268: }
2269:
2270: # ------------------------------------- Find the section of student in a course
2271: sub devalidate_getsection_cache {
2272: my ($udom,$unam,$courseid)=@_;
2273: my $hashid="$udom:$unam:$courseid";
2274: &devalidate_cache_new('getsection',$hashid);
2275: }
2276:
2277: sub courseid_to_courseurl {
2278: my ($courseid) = @_;
2279: #already url style courseid
2280: return $courseid if ($courseid =~ m{^/});
2281:
2282: if (exists($env{'course.'.$courseid.'.num'})) {
2283: my $cnum = $env{'course.'.$courseid.'.num'};
2284: my $cdom = $env{'course.'.$courseid.'.domain'};
2285: return "/$cdom/$cnum";
2286: }
2287:
2288: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2289: if (exists($courseinfo{'num'})) {
2290: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2291: }
2292:
2293: return undef;
2294: }
2295:
2296: sub getsection {
2297: my ($udom,$unam,$courseid)=@_;
2298: my $cachetime=1800;
2299:
2300: my $hashid="$udom:$unam:$courseid";
2301: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2302: if (defined($cached)) { return $result; }
2303:
2304: my %Pending;
2305: my %Expired;
2306: #
2307: # Each role can either have not started yet (pending), be active,
2308: # or have expired.
2309: #
2310: # If there is an active role, we are done.
2311: #
2312: # If there is more than one role which has not started yet,
2313: # choose the one which will start sooner
2314: # If there is one role which has not started yet, return it.
2315: #
2316: # If there is more than one expired role, choose the one which ended last.
2317: # If there is a role which has expired, return it.
2318: #
2319: $courseid = &courseid_to_courseurl($courseid);
2320: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2321: foreach my $key (keys(%roleshash)) {
2322: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2323: my $section=$1;
2324: if ($key eq $courseid.'_st') { $section=''; }
2325: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2326: my $now=time;
2327: if (defined($end) && $end && ($now > $end)) {
2328: $Expired{$end}=$section;
2329: next;
2330: }
2331: if (defined($start) && $start && ($now < $start)) {
2332: $Pending{$start}=$section;
2333: next;
2334: }
2335: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2336: }
2337: #
2338: # Presumedly there will be few matching roles from the above
2339: # loop and the sorting time will be negligible.
2340: if (scalar(keys(%Pending))) {
2341: my ($time) = sort {$a <=> $b} keys(%Pending);
2342: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2343: }
2344: if (scalar(keys(%Expired))) {
2345: my @sorted = sort {$a <=> $b} keys(%Expired);
2346: my $time = pop(@sorted);
2347: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2348: }
2349: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2350: }
2351:
2352: sub save_cache {
2353: &purge_remembered();
2354: #&Apache::loncommon::validate_page();
2355: undef(%env);
2356: undef($env_loaded);
2357: }
2358:
2359: my $to_remember=-1;
2360: my %remembered;
2361: my %accessed;
2362: my $kicks=0;
2363: my $hits=0;
2364: sub make_key {
2365: my ($name,$id) = @_;
2366: if (length($id) > 65
2367: && length(&escape($id)) > 200) {
2368: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2369: }
2370: return &escape($name.':'.$id);
2371: }
2372:
2373: sub devalidate_cache_new {
2374: my ($name,$id,$debug) = @_;
2375: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2376: $id=&make_key($name,$id);
2377: $memcache->delete($id);
2378: delete($remembered{$id});
2379: delete($accessed{$id});
2380: }
2381:
2382: sub is_cached_new {
2383: my ($name,$id,$debug) = @_;
2384: $id=&make_key($name,$id);
2385: if (exists($remembered{$id})) {
2386: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2387: $accessed{$id}=[&gettimeofday()];
2388: $hits++;
2389: return ($remembered{$id},1);
2390: }
2391: my $value = $memcache->get($id);
2392: if (!(defined($value))) {
2393: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2394: return (undef,undef);
2395: }
2396: if ($value eq '__undef__') {
2397: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2398: $value=undef;
2399: }
2400: &make_room($id,$value,$debug);
2401: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2402: return ($value,1);
2403: }
2404:
2405: sub do_cache_new {
2406: my ($name,$id,$value,$time,$debug) = @_;
2407: $id=&make_key($name,$id);
2408: my $setvalue=$value;
2409: if (!defined($setvalue)) {
2410: $setvalue='__undef__';
2411: }
2412: if (!defined($time) ) {
2413: $time=600;
2414: }
2415: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2416: my $result = $memcache->set($id,$setvalue,$time);
2417: if (! $result) {
2418: &logthis("caching of id -> $id failed");
2419: $memcache->disconnect_all();
2420: }
2421: # need to make a copy of $value
2422: &make_room($id,$value,$debug);
2423: return $value;
2424: }
2425:
2426: sub make_room {
2427: my ($id,$value,$debug)=@_;
2428:
2429: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2430: : $value;
2431: if ($to_remember<0) { return; }
2432: $accessed{$id}=[&gettimeofday()];
2433: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2434: my $to_kick;
2435: my $max_time=0;
2436: foreach my $other (keys(%accessed)) {
2437: if (&tv_interval($accessed{$other}) > $max_time) {
2438: $to_kick=$other;
2439: $max_time=&tv_interval($accessed{$other});
2440: }
2441: }
2442: delete($remembered{$to_kick});
2443: delete($accessed{$to_kick});
2444: $kicks++;
2445: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2446: return;
2447: }
2448:
2449: sub purge_remembered {
2450: #&logthis("Tossing ".scalar(keys(%remembered)));
2451: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2452: undef(%remembered);
2453: undef(%accessed);
2454: }
2455: # ------------------------------------- Read an entry from a user's environment
2456:
2457: sub userenvironment {
2458: my ($udom,$unam,@what)=@_;
2459: my $items;
2460: foreach my $item (@what) {
2461: $items.=&escape($item).'&';
2462: }
2463: $items=~s/\&$//;
2464: my %returnhash=();
2465: my $uhome = &homeserver($unam,$udom);
2466: unless ($uhome eq 'no_host') {
2467: my @answer=split(/\&/,
2468: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2469: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2470: return %returnhash;
2471: }
2472: my $i;
2473: for ($i=0;$i<=$#what;$i++) {
2474: $returnhash{$what[$i]}=&unescape($answer[$i]);
2475: }
2476: }
2477: return %returnhash;
2478: }
2479:
2480: # ---------------------------------------------------------- Get a studentphoto
2481: sub studentphoto {
2482: my ($udom,$unam,$ext) = @_;
2483: my $home=&Apache::lonnet::homeserver($unam,$udom);
2484: if (defined($env{'request.course.id'})) {
2485: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2486: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2487: return(&retrievestudentphoto($udom,$unam,$ext));
2488: } else {
2489: my ($result,$perm_reqd)=
2490: &Apache::lonnet::auto_photo_permission($unam,$udom);
2491: if ($result eq 'ok') {
2492: if (!($perm_reqd eq 'yes')) {
2493: return(&retrievestudentphoto($udom,$unam,$ext));
2494: }
2495: }
2496: }
2497: }
2498: } else {
2499: my ($result,$perm_reqd) =
2500: &Apache::lonnet::auto_photo_permission($unam,$udom);
2501: if ($result eq 'ok') {
2502: if (!($perm_reqd eq 'yes')) {
2503: return(&retrievestudentphoto($udom,$unam,$ext));
2504: }
2505: }
2506: }
2507: return '/adm/lonKaputt/lonlogo_broken.gif';
2508: }
2509:
2510: sub retrievestudentphoto {
2511: my ($udom,$unam,$ext,$type) = @_;
2512: my $home=&Apache::lonnet::homeserver($unam,$udom);
2513: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2514: if ($ret eq 'ok') {
2515: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2516: if ($type eq 'thumbnail') {
2517: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2518: }
2519: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2520: return $tokenurl;
2521: } else {
2522: if ($type eq 'thumbnail') {
2523: return '/adm/lonKaputt/genericstudent_tn.gif';
2524: } else {
2525: return '/adm/lonKaputt/lonlogo_broken.gif';
2526: }
2527: }
2528: }
2529:
2530: # -------------------------------------------------------------------- New chat
2531:
2532: sub chatsend {
2533: my ($newentry,$anon,$group)=@_;
2534: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2535: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2536: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2537: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2538: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2539: &escape($newentry)).':'.$group,$chome);
2540: }
2541:
2542: # ------------------------------------------ Find current version of a resource
2543:
2544: sub getversion {
2545: my $fname=&clutter(shift);
2546: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2547: return ¤tversion(&filelocation('',$fname));
2548: }
2549:
2550: sub currentversion {
2551: my $fname=shift;
2552: my $author=$fname;
2553: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2554: my ($udom,$uname)=split(/\//,$author);
2555: my $home=&homeserver($uname,$udom);
2556: if ($home eq 'no_host') {
2557: return -1;
2558: }
2559: my $answer=&reply("currentversion:$fname",$home);
2560: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2561: return -1;
2562: }
2563: return $answer;
2564: }
2565:
2566: #
2567: # Return special version number of resource if set by override, empty otherwise
2568: #
2569: sub usedversion {
2570: my $fname=shift;
2571: unless ($fname) { $fname=$env{'request.uri'}; }
2572: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2573: if ($urlversion) { return $urlversion; }
2574: return '';
2575: }
2576:
2577: # ----------------------------- Subscribe to a resource, return URL if possible
2578:
2579: sub subscribe {
2580: my $fname=shift;
2581: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2582: $fname=~s/[\n\r]//g;
2583: my $author=$fname;
2584: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2585: my ($udom,$uname)=split(/\//,$author);
2586: my $home=homeserver($uname,$udom);
2587: if ($home eq 'no_host') {
2588: return 'not_found';
2589: }
2590: my $answer=reply("sub:$fname",$home);
2591: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2592: $answer.=' by '.$home;
2593: }
2594: return $answer;
2595: }
2596:
2597: # -------------------------------------------------------------- Replicate file
2598:
2599: sub repcopy {
2600: my $filename=shift;
2601: $filename=~s/\/+/\//g;
2602: my $londocroot = $perlvar{'lonDocRoot'};
2603: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2604: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2605: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2606: $filename=~m{^/*(uploaded|editupload)/}) {
2607: return &repcopy_userfile($filename);
2608: }
2609: $filename=~s/[\n\r]//g;
2610: my $transname="$filename.in.transfer";
2611: # FIXME: this should flock
2612: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2613: my $remoteurl=subscribe($filename);
2614: if ($remoteurl =~ /^con_lost by/) {
2615: &logthis("Subscribe returned $remoteurl: $filename");
2616: return 'unavailable';
2617: } elsif ($remoteurl eq 'not_found') {
2618: #&logthis("Subscribe returned not_found: $filename");
2619: return 'not_found';
2620: } elsif ($remoteurl =~ /^rejected by/) {
2621: &logthis("Subscribe returned $remoteurl: $filename");
2622: return 'forbidden';
2623: } elsif ($remoteurl eq 'directory') {
2624: return 'ok';
2625: } else {
2626: my $author=$filename;
2627: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2628: my ($udom,$uname)=split(/\//,$author);
2629: my $home=homeserver($uname,$udom);
2630: unless ($home eq $perlvar{'lonHostID'}) {
2631: my @parts=split(/\//,$filename);
2632: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2633: if ($path ne "$londocroot/res") {
2634: &logthis("Malconfiguration for replication: $filename");
2635: return 'bad_request';
2636: }
2637: my $count;
2638: for ($count=5;$count<$#parts;$count++) {
2639: $path.="/$parts[$count]";
2640: if ((-e $path)!=1) {
2641: mkdir($path,0777);
2642: }
2643: }
2644: my $ua=new LWP::UserAgent;
2645: my $request=new HTTP::Request('GET',"$remoteurl");
2646: my $response=$ua->request($request,$transname);
2647: if ($response->is_error()) {
2648: unlink($transname);
2649: my $message=$response->status_line;
2650: &logthis("<font color=\"blue\">WARNING:"
2651: ." LWP get: $message: $filename</font>");
2652: return 'unavailable';
2653: } else {
2654: if ($remoteurl!~/\.meta$/) {
2655: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2656: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2657: if ($mresponse->is_error()) {
2658: unlink($filename.'.meta');
2659: &logthis(
2660: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2661: }
2662: }
2663: rename($transname,$filename);
2664: return 'ok';
2665: }
2666: }
2667: }
2668: }
2669:
2670: # ------------------------------------------------ Get server side include body
2671: sub ssi_body {
2672: my ($filelink,%form)=@_;
2673: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2674: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2675: }
2676: my $output='';
2677: my $response;
2678: if ($filelink=~/^https?\:/) {
2679: ($output,$response)=&externalssi($filelink);
2680: } else {
2681: $filelink .= $filelink=~/\?/ ? '&' : '?';
2682: $filelink .= 'inhibitmenu=yes';
2683: ($output,$response)=&ssi($filelink,%form);
2684: }
2685: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2686: $output=~s/^.*?\<body[^\>]*\>//si;
2687: $output=~s/\<\/body\s*\>.*?$//si;
2688: if (wantarray) {
2689: return ($output, $response);
2690: } else {
2691: return $output;
2692: }
2693: }
2694:
2695: # --------------------------------------------------------- Server Side Include
2696:
2697: sub absolute_url {
2698: my ($host_name) = @_;
2699: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2700: if ($host_name eq '') {
2701: $host_name = $ENV{'SERVER_NAME'};
2702: }
2703: return $protocol.$host_name;
2704: }
2705:
2706: #
2707: # Server side include.
2708: # Parameters:
2709: # fn Possibly encrypted resource name/id.
2710: # form Hash that describes how the rendering should be done
2711: # and other things.
2712: # Returns:
2713: # Scalar context: The content of the response.
2714: # Array context: 2 element list of the content and the full response object.
2715: #
2716: sub ssi {
2717:
2718: my ($fn,%form)=@_;
2719: my $ua=new LWP::UserAgent;
2720: my $request;
2721:
2722: $form{'no_update_last_known'}=1;
2723: &Apache::lonenc::check_encrypt(\$fn);
2724: if (%form) {
2725: $request=new HTTP::Request('POST',&absolute_url().$fn);
2726: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2727: } else {
2728: $request=new HTTP::Request('GET',&absolute_url().$fn);
2729: }
2730:
2731: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2732: my $response= $ua->request($request);
2733: my $content = $response->content;
2734:
2735:
2736: if (wantarray) {
2737: return ($content, $response);
2738: } else {
2739: return $content;
2740: }
2741: }
2742:
2743: sub externalssi {
2744: my ($url)=@_;
2745: my $ua=new LWP::UserAgent;
2746: my $request=new HTTP::Request('GET',$url);
2747: my $response=$ua->request($request);
2748: if (wantarray) {
2749: return ($response->content, $response);
2750: } else {
2751: return $response->content;
2752: }
2753: }
2754:
2755: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2756:
2757: sub allowuploaded {
2758: my ($srcurl,$url)=@_;
2759: $url=&clutter(&declutter($url));
2760: my $dir=$url;
2761: $dir=~s/\/[^\/]+$//;
2762: my %httpref=();
2763: my $httpurl=&hreflocation('',$url);
2764: $httpref{'httpref.'.$httpurl}=$srcurl;
2765: &Apache::lonnet::appenv(\%httpref);
2766: }
2767:
2768: #
2769: # Determine if the current user should be able to edit a particular resource,
2770: # when viewing in course context.
2771: # (a) When viewing resource used to determine if "Edit" item is included in
2772: # Functions.
2773: # (b) When displaying folder contents in course editor, used to determine if
2774: # "Edit" link will be displayed alongside resource.
2775: #
2776: # input: six args -- filename (decluttered), course number, course domain,
2777: # url, symb (if registered) and group (if this is a group
2778: # item -- e.g., bulletin board, group page etc.).
2779: # output: array of five scalars --
2780: # $cfile -- url for file editing if editable on current server
2781: # $home -- homeserver of resource (i.e., for author if published,
2782: # or course if uploaded.).
2783: # $switchserver -- 1 if server switch will be needed.
2784: # $forceedit -- 1 if icon/link should be to go to edit mode
2785: # $forceview -- 1 if icon/link should be to go to view mode
2786: #
2787:
2788: sub can_edit_resource {
2789: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2790: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2791: #
2792: # For aboutme pages user can only edit his/her own.
2793: #
2794: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2795: my ($sdom,$sname) = ($1,$2);
2796: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2797: $home = $env{'user.home'};
2798: $cfile = $resurl;
2799: if ($env{'form.forceedit'}) {
2800: $forceview = 1;
2801: } else {
2802: $forceedit = 1;
2803: }
2804: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2805: } else {
2806: return;
2807: }
2808: }
2809:
2810: if ($env{'request.course.id'}) {
2811: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2812: if ($group ne '') {
2813: # if this is a group homepage or group bulletin board, check group privs
2814: my $allowed = 0;
2815: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2816: if ((&allowed('mdg',$env{'request.course.id'}.
2817: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2818: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2819: $allowed = 1;
2820: }
2821: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2822: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2823: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2824: $allowed = 1;
2825: }
2826: }
2827: if ($allowed) {
2828: $home=&homeserver($cnum,$cdom);
2829: if ($env{'form.forceedit'}) {
2830: $forceview = 1;
2831: } else {
2832: $forceedit = 1;
2833: }
2834: $cfile = $resurl;
2835: } else {
2836: return;
2837: }
2838: } else {
2839: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2840: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2841: return;
2842: }
2843: } elsif (!$crsedit) {
2844: #
2845: # No edit allowed where CC has switched to student role.
2846: #
2847: return;
2848: }
2849: }
2850: }
2851:
2852: if ($file ne '') {
2853: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2854: if (&is_course_upload($file,$cnum,$cdom)) {
2855: $uploaded = 1;
2856: $incourse = 1;
2857: if ($file =~/\.(htm|html|css|js|txt)$/) {
2858: $cfile = &hreflocation('',$file);
2859: if ($env{'form.forceedit'}) {
2860: $forceview = 1;
2861: } else {
2862: $forceedit = 1;
2863: }
2864: }
2865: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2866: $incourse = 1;
2867: if ($env{'form.forceedit'}) {
2868: $forceview = 1;
2869: } else {
2870: $forceedit = 1;
2871: }
2872: $cfile = $resurl;
2873: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2874: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2875: $incourse = 1;
2876: if ($env{'form.forceedit'}) {
2877: $forceview = 1;
2878: } else {
2879: $forceedit = 1;
2880: }
2881: $cfile = $resurl;
2882: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2883: $incourse = 1;
2884: $cfile = $resurl.'/smpedit';
2885: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2886: $incourse = 1;
2887: if ($env{'form.forceedit'}) {
2888: $forceview = 1;
2889: } else {
2890: $forceedit = 1;
2891: }
2892: $cfile = $resurl;
2893: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2894: $incourse = 1;
2895: if ($env{'form.forceedit'}) {
2896: $forceview = 1;
2897: } else {
2898: $forceedit = 1;
2899: }
2900: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2901: }
2902: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2903: my $template = '/res/lib/templates/simpleproblem.problem';
2904: if (&is_on_map($template)) {
2905: $incourse = 1;
2906: $forceview = 1;
2907: $cfile = $template;
2908: }
2909: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2910: $incourse = 1;
2911: if ($env{'form.forceedit'}) {
2912: $forceview = 1;
2913: } else {
2914: $forceedit = 1;
2915: }
2916: $cfile = $resurl;
2917: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2918: $incourse = 1;
2919: $forceview = 1;
2920: if ($symb) {
2921: my ($map,$id,$res)=&decode_symb($symb);
2922: $env{'request.symb'} = $symb;
2923: $cfile = &clutter($res);
2924: } else {
2925: $cfile = $env{'form.suppurl'};
2926: $cfile =~ s{^http://}{};
2927: $cfile = '/adm/wrapper/ext/'.$cfile;
2928: }
2929: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2930: if ($env{'form.forceedit'}) {
2931: $forceview = 1;
2932: } else {
2933: $forceedit = 1;
2934: }
2935: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2936: }
2937: }
2938: if ($uploaded || $incourse) {
2939: $home=&homeserver($cnum,$cdom);
2940: } elsif ($file !~ m{/$}) {
2941: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2942: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2943: # Check that the user has permission to edit this resource
2944: my $setpriv = 1;
2945: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2946: if (defined($cfudom)) {
2947: $home=&homeserver($cfuname,$cfudom);
2948: $cfile=$file;
2949: }
2950: }
2951: if (($cfile ne '') && (!$incourse || $uploaded) &&
2952: (($home ne '') && ($home ne 'no_host'))) {
2953: my @ids=¤t_machine_ids();
2954: unless (grep(/^\Q$home\E$/,@ids)) {
2955: $switchserver=1;
2956: }
2957: }
2958: }
2959: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2960: }
2961:
2962: sub is_course_upload {
2963: my ($file,$cnum,$cdom) = @_;
2964: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2965: $uploadpath =~ s{^\/}{};
2966: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2967: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2968: return 1;
2969: }
2970: return;
2971: }
2972:
2973: sub in_course {
2974: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2975: if ($hideprivileged) {
2976: my $skipuser;
2977: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2978: my @possdoms = ($cdom);
2979: if ($coursehash{'checkforpriv'}) {
2980: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2981: }
2982: if (&privileged($uname,$udom,\@possdoms)) {
2983: $skipuser = 1;
2984: if ($coursehash{'nothideprivileged'}) {
2985: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2986: my $user;
2987: if ($item =~ /:/) {
2988: $user = $item;
2989: } else {
2990: $user = join(':',split(/[\@]/,$item));
2991: }
2992: if ($user eq $uname.':'.$udom) {
2993: undef($skipuser);
2994: last;
2995: }
2996: }
2997: }
2998: if ($skipuser) {
2999: return 0;
3000: }
3001: }
3002: }
3003: $type ||= 'any';
3004: if (!defined($cdom) || !defined($cnum)) {
3005: my $cid = $env{'request.course.id'};
3006: $cdom = $env{'course.'.$cid.'.domain'};
3007: $cnum = $env{'course.'.$cid.'.num'};
3008: }
3009: my $typesref;
3010: if (($type eq 'any') || ($type eq 'all')) {
3011: $typesref = ['active','previous','future'];
3012: } elsif ($type eq 'previous' || $type eq 'future') {
3013: $typesref = [$type];
3014: }
3015: my %roles = &get_my_roles($uname,$udom,'userroles',
3016: $typesref,undef,[$cdom]);
3017: my ($tmp) = keys(%roles);
3018: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3019: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3020: if (@course_roles > 0) {
3021: return 1;
3022: }
3023: return 0;
3024: }
3025:
3026: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3027: # input: action, courseID, current domain, intended
3028: # path to file, source of file, instruction to parse file for objects,
3029: # ref to hash for embedded objects,
3030: # ref to hash for codebase of java objects.
3031: # reference to scalar to accommodate mime type determined
3032: # from File::MMagic if $parser = parse.
3033: #
3034: # output: url to file (if action was uploaddoc),
3035: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3036: #
3037: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3038: # course.
3039: #
3040: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3041: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3042: # course's home server.
3043: #
3044: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3045: # be copied from $source (current location) to
3046: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3047: # and will then be copied to
3048: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3049: # course's home server.
3050: #
3051: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3052: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3053: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3054: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3055: # in course's home server.
3056: #
3057:
3058: sub process_coursefile {
3059: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3060: $mimetype)=@_;
3061: my $fetchresult;
3062: my $home=&homeserver($docuname,$docudom);
3063: if ($action eq 'propagate') {
3064: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3065: $home);
3066: } else {
3067: my $fpath = '';
3068: my $fname = $file;
3069: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3070: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3071: my $filepath = &build_filepath($fpath);
3072: if ($action eq 'copy') {
3073: if ($source eq '') {
3074: $fetchresult = 'no source file';
3075: return $fetchresult;
3076: } else {
3077: my $destination = $filepath.'/'.$fname;
3078: rename($source,$destination);
3079: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3080: $home);
3081: }
3082: } elsif ($action eq 'uploaddoc') {
3083: open(my $fh,'>'.$filepath.'/'.$fname);
3084: print $fh $env{'form.'.$source};
3085: close($fh);
3086: if ($parser eq 'parse') {
3087: my $mm = new File::MMagic;
3088: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3089: if ($type eq 'text/html') {
3090: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3091: unless ($parse_result eq 'ok') {
3092: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3093: }
3094: }
3095: if (ref($mimetype)) {
3096: $$mimetype = $type;
3097: }
3098: }
3099: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3100: $home);
3101: if ($fetchresult eq 'ok') {
3102: return '/uploaded/'.$fpath.'/'.$fname;
3103: } else {
3104: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3105: ' to host '.$home.': '.$fetchresult);
3106: return '/adm/notfound.html';
3107: }
3108: }
3109: }
3110: unless ( $fetchresult eq 'ok') {
3111: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3112: ' to host '.$home.': '.$fetchresult);
3113: }
3114: return $fetchresult;
3115: }
3116:
3117: sub build_filepath {
3118: my ($fpath) = @_;
3119: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3120: unless ($fpath eq '') {
3121: my @parts=split('/',$fpath);
3122: foreach my $part (@parts) {
3123: $filepath.= '/'.$part;
3124: if ((-e $filepath)!=1) {
3125: mkdir($filepath,0777);
3126: }
3127: }
3128: }
3129: return $filepath;
3130: }
3131:
3132: sub store_edited_file {
3133: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3134: my $file = $primary_url;
3135: $file =~ s#^/uploaded/$docudom/$docuname/##;
3136: my $fpath = '';
3137: my $fname = $file;
3138: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3139: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3140: my $filepath = &build_filepath($fpath);
3141: open(my $fh,'>'.$filepath.'/'.$fname);
3142: print $fh $content;
3143: close($fh);
3144: my $home=&homeserver($docuname,$docudom);
3145: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3146: $home);
3147: if ($$fetchresult eq 'ok') {
3148: return '/uploaded/'.$fpath.'/'.$fname;
3149: } else {
3150: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3151: ' to host '.$home.': '.$$fetchresult);
3152: return '/adm/notfound.html';
3153: }
3154: }
3155:
3156: sub clean_filename {
3157: my ($fname,$args)=@_;
3158: # Replace Windows backslashes by forward slashes
3159: $fname=~s/\\/\//g;
3160: if (!$args->{'keep_path'}) {
3161: # Get rid of everything but the actual filename
3162: $fname=~s/^.*\/([^\/]+)$/$1/;
3163: }
3164: # Replace spaces by underscores
3165: $fname=~s/\s+/\_/g;
3166: # Replace all other weird characters by nothing
3167: $fname=~s{[^/\w\.\-]}{}g;
3168: # Replace all .\d. sequences with _\d. so they no longer look like version
3169: # numbers
3170: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3171: return $fname;
3172: }
3173: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3174: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3175: # image with the same aspect ratio as the original, but with dimensions which do
3176: # not exceed $resizewidth and $resizeheight.
3177:
3178: sub resizeImage {
3179: my ($img_path,$resizewidth,$resizeheight) = @_;
3180: my $ima = Image::Magick->new;
3181: my $resized;
3182: if (-e $img_path) {
3183: $ima->Read($img_path);
3184: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3185: my $width = $ima->Get('width');
3186: my $height = $ima->Get('height');
3187: if ($width > $resizewidth) {
3188: my $factor = $width/$resizewidth;
3189: my $newheight = $height/$factor;
3190: $ima->Scale(width=>$resizewidth,height=>$newheight);
3191: $resized = 1;
3192: }
3193: }
3194: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3195: my $width = $ima->Get('width');
3196: my $height = $ima->Get('height');
3197: if ($height > $resizeheight) {
3198: my $factor = $height/$resizeheight;
3199: my $newwidth = $width/$factor;
3200: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3201: $resized = 1;
3202: }
3203: }
3204: if ($resized) {
3205: $ima->Write($img_path);
3206: }
3207: }
3208: return;
3209: }
3210:
3211: # --------------- Take an uploaded file and put it into the userfiles directory
3212: # input: $formname - the contents of the file are in $env{"form.$formname"}
3213: # the desired filename is in $env{"form.$formname.filename"}
3214: # $context - possible values: coursedoc, existingfile, overwrite,
3215: # canceloverwrite, or ''.
3216: # if 'coursedoc': upload to the current course
3217: # if 'existingfile': write file to tmp/overwrites directory
3218: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3219: # $context is passed as argument to &finishuserfileupload
3220: # $subdir - directory in userfile to store the file into
3221: # $parser - instruction to parse file for objects ($parser = parse)
3222: # $allfiles - reference to hash for embedded objects
3223: # $codebase - reference to hash for codebase of java objects
3224: # $desuname - username for permanent storage of uploaded file
3225: # $dsetudom - domain for permanaent storage of uploaded file
3226: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3227: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3228: # $resizewidth - width (pixels) to which to resize uploaded image
3229: # $resizeheight - height (pixels) to which to resize uploaded image
3230: # $mimetype - reference to scalar to accommodate mime type determined
3231: # from File::MMagic.
3232: #
3233: # output: url of file in userspace, or error: <message>
3234: # or /adm/notfound.html if failure to upload occurse
3235:
3236: sub userfileupload {
3237: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3238: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3239: if (!defined($subdir)) { $subdir='unknown'; }
3240: my $fname=$env{'form.'.$formname.'.filename'};
3241: $fname=&clean_filename($fname);
3242: # See if there is anything left
3243: unless ($fname) { return 'error: no uploaded file'; }
3244: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3245: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3246: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3247: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3248: my $now = time;
3249: my $filepath;
3250: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3251: $filepath = 'tmp/helprequests/'.$now;
3252: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3253: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3254: '_'.$env{'user.domain'}.'/pending';
3255: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3256: my ($docuname,$docudom);
3257: if ($destudom) {
3258: $docudom = $destudom;
3259: } else {
3260: $docudom = $env{'user.domain'};
3261: }
3262: if ($destuname) {
3263: $docuname = $destuname;
3264: } else {
3265: $docuname = $env{'user.name'};
3266: }
3267: if (exists($env{'form.group'})) {
3268: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3269: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3270: }
3271: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3272: if ($context eq 'canceloverwrite') {
3273: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3274: if (-e $tempfile) {
3275: my @info = stat($tempfile);
3276: if ($info[9] eq $env{'form.timestamp'}) {
3277: unlink($tempfile);
3278: }
3279: }
3280: return;
3281: }
3282: }
3283: # Create the directory if not present
3284: my @parts=split(/\//,$filepath);
3285: my $fullpath = $perlvar{'lonDaemons'};
3286: for (my $i=0;$i<@parts;$i++) {
3287: $fullpath .= '/'.$parts[$i];
3288: if ((-e $fullpath)!=1) {
3289: mkdir($fullpath,0777);
3290: }
3291: }
3292: open(my $fh,'>'.$fullpath.'/'.$fname);
3293: print $fh $env{'form.'.$formname};
3294: close($fh);
3295: if ($context eq 'existingfile') {
3296: my @info = stat($fullpath.'/'.$fname);
3297: return ($fullpath.'/'.$fname,$info[9]);
3298: } else {
3299: return $fullpath.'/'.$fname;
3300: }
3301: }
3302: if ($subdir eq 'scantron') {
3303: $fname = 'scantron_orig_'.$fname;
3304: } else {
3305: $fname="$subdir/$fname";
3306: }
3307: if ($context eq 'coursedoc') {
3308: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3309: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3310: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3311: return &finishuserfileupload($docuname,$docudom,
3312: $formname,$fname,$parser,$allfiles,
3313: $codebase,$thumbwidth,$thumbheight,
3314: $resizewidth,$resizeheight,$context,$mimetype);
3315: } else {
3316: if ($env{'form.folder'}) {
3317: $fname=$env{'form.folder'}.'/'.$fname;
3318: }
3319: return &process_coursefile('uploaddoc',$docuname,$docudom,
3320: $fname,$formname,$parser,
3321: $allfiles,$codebase,$mimetype);
3322: }
3323: } elsif (defined($destuname)) {
3324: my $docuname=$destuname;
3325: my $docudom=$destudom;
3326: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3327: $parser,$allfiles,$codebase,
3328: $thumbwidth,$thumbheight,
3329: $resizewidth,$resizeheight,$context,$mimetype);
3330: } else {
3331: my $docuname=$env{'user.name'};
3332: my $docudom=$env{'user.domain'};
3333: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3334: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3335: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3336: }
3337: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3338: $parser,$allfiles,$codebase,
3339: $thumbwidth,$thumbheight,
3340: $resizewidth,$resizeheight,$context,$mimetype);
3341: }
3342: }
3343:
3344: sub finishuserfileupload {
3345: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3346: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3347: my $path=$docudom.'/'.$docuname.'/';
3348: my $filepath=$perlvar{'lonDocRoot'};
3349:
3350: my ($fnamepath,$file,$fetchthumb);
3351: $file=$fname;
3352: if ($fname=~m|/|) {
3353: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3354: $path.=$fnamepath.'/';
3355: }
3356: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3357: my $count;
3358: for ($count=4;$count<=$#parts;$count++) {
3359: $filepath.="/$parts[$count]";
3360: if ((-e $filepath)!=1) {
3361: mkdir($filepath,0777);
3362: }
3363: }
3364:
3365: # Save the file
3366: {
3367: if (!open(FH,'>'.$filepath.'/'.$file)) {
3368: &logthis('Failed to create '.$filepath.'/'.$file);
3369: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3370: return '/adm/notfound.html';
3371: }
3372: if ($context eq 'overwrite') {
3373: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3374: my $target = $filepath.'/'.$file;
3375: if (-e $source) {
3376: my @info = stat($source);
3377: if ($info[9] eq $env{'form.timestamp'}) {
3378: unless (&File::Copy::move($source,$target)) {
3379: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3380: return "Moving from $source failed";
3381: }
3382: } else {
3383: return "Temporary file: $source had unexpected date/time for last modification";
3384: }
3385: } else {
3386: return "Temporary file: $source missing";
3387: }
3388: } elsif (!print FH ($env{'form.'.$formname})) {
3389: &logthis('Failed to write to '.$filepath.'/'.$file);
3390: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3391: return '/adm/notfound.html';
3392: }
3393: close(FH);
3394: if ($resizewidth && $resizeheight) {
3395: my $mm = new File::MMagic;
3396: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3397: if ($mime_type =~ m{^image/}) {
3398: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3399: }
3400: }
3401: }
3402: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3403: if (ref($mimetype)) {
3404: if ($$mimetype eq '') {
3405: my $mm = new File::MMagic;
3406: my $type = $mm->checktype_filename($filepath.'/'.$file);
3407: $$mimetype = $type;
3408: }
3409: }
3410: }
3411: if ($parser eq 'parse') {
3412: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3413: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3414: $allfiles,$codebase);
3415: unless ($parse_result eq 'ok') {
3416: &logthis('Failed to parse '.$filepath.$file.
3417: ' for embedded media: '.$parse_result);
3418: }
3419: }
3420: }
3421: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3422: my $input = $filepath.'/'.$file;
3423: my $output = $filepath.'/'.'tn-'.$file;
3424: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3425: system("convert -sample $thumbsize $input $output");
3426: if (-e $filepath.'/'.'tn-'.$file) {
3427: $fetchthumb = 1;
3428: }
3429: }
3430:
3431: # Notify homeserver to grep it
3432: #
3433: my $docuhome=&homeserver($docuname,$docudom);
3434: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3435: if ($fetchresult eq 'ok') {
3436: if ($fetchthumb) {
3437: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3438: if ($thumbresult ne 'ok') {
3439: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3440: $docuhome.': '.$thumbresult);
3441: }
3442: }
3443: #
3444: # Return the URL to it
3445: return '/uploaded/'.$path.$file;
3446: } else {
3447: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3448: ': '.$fetchresult);
3449: return '/adm/notfound.html';
3450: }
3451: }
3452:
3453: sub extract_embedded_items {
3454: my ($fullpath,$allfiles,$codebase,$content) = @_;
3455: my @state = ();
3456: my (%lastids,%related,%shockwave,%flashvars);
3457: my %javafiles = (
3458: codebase => '',
3459: code => '',
3460: archive => ''
3461: );
3462: my %mediafiles = (
3463: src => '',
3464: movie => '',
3465: );
3466: my $p;
3467: if ($content) {
3468: $p = HTML::LCParser->new($content);
3469: } else {
3470: $p = HTML::LCParser->new($fullpath);
3471: }
3472: while (my $t=$p->get_token()) {
3473: if ($t->[0] eq 'S') {
3474: my ($tagname, $attr) = ($t->[1],$t->[2]);
3475: push(@state, $tagname);
3476: if (lc($tagname) eq 'allow') {
3477: &add_filetype($allfiles,$attr->{'src'},'src');
3478: }
3479: if (lc($tagname) eq 'img') {
3480: &add_filetype($allfiles,$attr->{'src'},'src');
3481: }
3482: if (lc($tagname) eq 'a') {
3483: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3484: &add_filetype($allfiles,$attr->{'href'},'href');
3485: }
3486: }
3487: if (lc($tagname) eq 'script') {
3488: my $src;
3489: if ($attr->{'archive'} =~ /\.jar$/i) {
3490: &add_filetype($allfiles,$attr->{'archive'},'archive');
3491: } else {
3492: if ($attr->{'src'} ne '') {
3493: $src = $attr->{'src'};
3494: &add_filetype($allfiles,$src,'src');
3495: }
3496: }
3497: my $text = $p->get_trimmed_text();
3498: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3499: my @swfargs = split(/,/,$1);
3500: foreach my $item (@swfargs) {
3501: $item =~ s/["']//g;
3502: $item =~ s/^\s+//;
3503: $item =~ s/\s+$//;
3504: }
3505: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3506: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3507: push(@{$related{$swfargs[0]}},$swfargs[2]);
3508: } else {
3509: $related{$swfargs[0]} = [$swfargs[2]];
3510: }
3511: }
3512: }
3513: }
3514: if (lc($tagname) eq 'link') {
3515: if (lc($attr->{'rel'}) eq 'stylesheet') {
3516: &add_filetype($allfiles,$attr->{'href'},'href');
3517: }
3518: }
3519: if (lc($tagname) eq 'object' ||
3520: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3521: foreach my $item (keys(%javafiles)) {
3522: $javafiles{$item} = '';
3523: }
3524: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3525: $lastids{lc($tagname)} = $attr->{'id'};
3526: }
3527: }
3528: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3529: my $name = lc($attr->{'name'});
3530: foreach my $item (keys(%javafiles)) {
3531: if ($name eq $item) {
3532: $javafiles{$item} = $attr->{'value'};
3533: last;
3534: }
3535: }
3536: my $pathfrom;
3537: foreach my $item (keys(%mediafiles)) {
3538: if ($name eq $item) {
3539: $pathfrom = $attr->{'value'};
3540: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3541: &add_filetype($allfiles,$pathfrom,$name);
3542: last;
3543: }
3544: }
3545: if ($name eq 'flashvars') {
3546: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3547: }
3548: if ($pathfrom ne '') {
3549: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3550: $pathfrom);
3551: }
3552: }
3553: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3554: foreach my $item (keys(%javafiles)) {
3555: if ($attr->{$item}) {
3556: $javafiles{$item} = $attr->{$item};
3557: last;
3558: }
3559: }
3560: foreach my $item (keys(%mediafiles)) {
3561: if ($attr->{$item}) {
3562: &add_filetype($allfiles,$attr->{$item},$item);
3563: last;
3564: }
3565: }
3566: if (lc($tagname) eq 'embed') {
3567: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3568: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3569: $attr->{'src'});
3570: }
3571: }
3572: }
3573: if (lc($tagname) eq 'iframe') {
3574: my $src = $attr->{'src'} ;
3575: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3576: &add_filetype($allfiles,$src,'src');
3577: } elsif ($src =~ m{^/}) {
3578: if ($env{'request.course.id'}) {
3579: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3580: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3581: my $url = &hreflocation('',$fullpath);
3582: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3583: my $relpath = $1;
3584: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3585: &add_filetype($allfiles,$1,'src');
3586: }
3587: }
3588: }
3589: }
3590: }
3591: if ($t->[4] =~ m{/>$}) {
3592: pop(@state);
3593: }
3594: } elsif ($t->[0] eq 'E') {
3595: my ($tagname) = ($t->[1]);
3596: if ($javafiles{'codebase'} ne '') {
3597: $javafiles{'codebase'} .= '/';
3598: }
3599: if (lc($tagname) eq 'applet' ||
3600: lc($tagname) eq 'object' ||
3601: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3602: ) {
3603: foreach my $item (keys(%javafiles)) {
3604: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3605: my $file=$javafiles{'codebase'}.$javafiles{$item};
3606: &add_filetype($allfiles,$file,$item);
3607: }
3608: }
3609: }
3610: pop @state;
3611: }
3612: }
3613: foreach my $id (sort(keys(%flashvars))) {
3614: if ($shockwave{$id} ne '') {
3615: my @pairs = split(/\&/,$flashvars{$id});
3616: foreach my $pair (@pairs) {
3617: my ($key,$value) = split(/\=/,$pair);
3618: if ($key eq 'thumb') {
3619: &add_filetype($allfiles,$value,$key);
3620: } elsif ($key eq 'content') {
3621: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3622: my ($ext) = ($value =~ /\.([^.]+)$/);
3623: if ($ext ne '') {
3624: &add_filetype($allfiles,$path.$value,$ext);
3625: }
3626: }
3627: }
3628: }
3629: }
3630: return 'ok';
3631: }
3632:
3633: sub add_filetype {
3634: my ($allfiles,$file,$type)=@_;
3635: if (exists($allfiles->{$file})) {
3636: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3637: push(@{$allfiles->{$file}}, &escape($type));
3638: }
3639: } else {
3640: @{$allfiles->{$file}} = (&escape($type));
3641: }
3642: }
3643:
3644: sub embedded_dependency {
3645: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3646: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3647: if (($identifier ne '') &&
3648: (ref($related->{$identifier}) eq 'ARRAY') &&
3649: ($pathfrom ne '')) {
3650: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3651: foreach my $dep (@{$related->{$identifier}}) {
3652: &add_filetype($allfiles,$path.$dep,'object');
3653: }
3654: }
3655: }
3656: return;
3657: }
3658:
3659: sub removeuploadedurl {
3660: my ($url)=@_;
3661: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3662: return &removeuserfile($uname,$udom,$fname);
3663: }
3664:
3665: sub removeuserfile {
3666: my ($docuname,$docudom,$fname)=@_;
3667: my $home=&homeserver($docuname,$docudom);
3668: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3669: if ($result eq 'ok') {
3670: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3671: my $metafile = $fname.'.meta';
3672: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3673: my $url = "/uploaded/$docudom/$docuname/$fname";
3674: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3675: my $sqlresult =
3676: &update_portfolio_table($docuname,$docudom,$file,
3677: 'portfolio_metadata',$group,
3678: 'delete');
3679: }
3680: }
3681: return $result;
3682: }
3683:
3684: sub mkdiruserfile {
3685: my ($docuname,$docudom,$dir)=@_;
3686: my $home=&homeserver($docuname,$docudom);
3687: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3688: }
3689:
3690: sub renameuserfile {
3691: my ($docuname,$docudom,$old,$new)=@_;
3692: my $home=&homeserver($docuname,$docudom);
3693: my $result = &reply("renameuserfile:$docudom:$docuname:".
3694: &escape("$old").':'.&escape("$new"),$home);
3695: if ($result eq 'ok') {
3696: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3697: my $oldmeta = $old.'.meta';
3698: my $newmeta = $new.'.meta';
3699: my $metaresult =
3700: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3701: my $url = "/uploaded/$docudom/$docuname/$old";
3702: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3703: my $sqlresult =
3704: &update_portfolio_table($docuname,$docudom,$file,
3705: 'portfolio_metadata',$group,
3706: 'delete');
3707: }
3708: }
3709: return $result;
3710: }
3711:
3712: # ------------------------------------------------------------------------- Log
3713:
3714: sub log {
3715: my ($dom,$nam,$hom,$what)=@_;
3716: return critical("log:$dom:$nam:$what",$hom);
3717: }
3718:
3719: # ------------------------------------------------------------------ Course Log
3720: #
3721: # This routine flushes several buffers of non-mission-critical nature
3722: #
3723:
3724: sub flushcourselogs {
3725: &logthis('Flushing log buffers');
3726: #
3727: # course logs
3728: # This is a log of all transactions in a course, which can be used
3729: # for data mining purposes
3730: #
3731: # It also collects the courseid database, which lists last transaction
3732: # times and course titles for all courseids
3733: #
3734: my %courseidbuffer=();
3735: foreach my $crsid (keys(%courselogs)) {
3736: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3737: &escape($courselogs{$crsid}),
3738: $coursehombuf{$crsid}) eq 'ok') {
3739: delete $courselogs{$crsid};
3740: } else {
3741: &logthis('Failed to flush log buffer for '.$crsid);
3742: if (length($courselogs{$crsid})>40000) {
3743: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3744: " exceeded maximum size, deleting.</font>");
3745: delete $courselogs{$crsid};
3746: }
3747: }
3748: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3749: 'description' => $coursedescrbuf{$crsid},
3750: 'inst_code' => $courseinstcodebuf{$crsid},
3751: 'type' => $coursetypebuf{$crsid},
3752: 'owner' => $courseownerbuf{$crsid},
3753: };
3754: }
3755: #
3756: # Write course id database (reverse lookup) to homeserver of courses
3757: # Is used in pickcourse
3758: #
3759: foreach my $crs_home (keys(%courseidbuffer)) {
3760: my $response = &courseidput(&host_domain($crs_home),
3761: $courseidbuffer{$crs_home},
3762: $crs_home,'timeonly');
3763: }
3764: #
3765: # File accesses
3766: # Writes to the dynamic metadata of resources to get hit counts, etc.
3767: #
3768: foreach my $entry (keys(%accesshash)) {
3769: if ($entry =~ /___count$/) {
3770: my ($dom,$name);
3771: ($dom,$name,undef)=
3772: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3773: if (! defined($dom) || $dom eq '' ||
3774: ! defined($name) || $name eq '') {
3775: my $cid = $env{'request.course.id'};
3776: $dom = $env{'request.'.$cid.'.domain'};
3777: $name = $env{'request.'.$cid.'.num'};
3778: }
3779: my $value = $accesshash{$entry};
3780: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3781: my %temphash=($url => $value);
3782: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3783: if ($result eq 'ok') {
3784: delete $accesshash{$entry};
3785: }
3786: } else {
3787: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3788: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3789: my %temphash=($entry => $accesshash{$entry});
3790: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3791: delete $accesshash{$entry};
3792: }
3793: }
3794: }
3795: #
3796: # Roles
3797: # Reverse lookup of user roles for course faculty/staff and co-authorship
3798: #
3799: foreach my $entry (keys(%userrolehash)) {
3800: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3801: split(/\:/,$entry);
3802: if (&Apache::lonnet::put('nohist_userroles',
3803: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3804: $rudom,$runame) eq 'ok') {
3805: delete $userrolehash{$entry};
3806: }
3807: }
3808: #
3809: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3810: #
3811: my %domrolebuffer = ();
3812: foreach my $entry (keys(%domainrolehash)) {
3813: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3814: if ($domrolebuffer{$rudom}) {
3815: $domrolebuffer{$rudom}.='&'.&escape($entry).
3816: '='.&escape($domainrolehash{$entry});
3817: } else {
3818: $domrolebuffer{$rudom}.=&escape($entry).
3819: '='.&escape($domainrolehash{$entry});
3820: }
3821: delete $domainrolehash{$entry};
3822: }
3823: foreach my $dom (keys(%domrolebuffer)) {
3824: my %servers = &get_servers($dom,'library');
3825: foreach my $tryserver (keys(%servers)) {
3826: unless (&reply('domroleput:'.$dom.':'.
3827: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3828: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3829: }
3830: }
3831: }
3832: $dumpcount++;
3833: }
3834:
3835: sub courselog {
3836: my $what=shift;
3837: $what=time.':'.$what;
3838: unless ($env{'request.course.id'}) { return ''; }
3839: $coursedombuf{$env{'request.course.id'}}=
3840: $env{'course.'.$env{'request.course.id'}.'.domain'};
3841: $coursenumbuf{$env{'request.course.id'}}=
3842: $env{'course.'.$env{'request.course.id'}.'.num'};
3843: $coursehombuf{$env{'request.course.id'}}=
3844: $env{'course.'.$env{'request.course.id'}.'.home'};
3845: $coursedescrbuf{$env{'request.course.id'}}=
3846: $env{'course.'.$env{'request.course.id'}.'.description'};
3847: $courseinstcodebuf{$env{'request.course.id'}}=
3848: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3849: $courseownerbuf{$env{'request.course.id'}}=
3850: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3851: $coursetypebuf{$env{'request.course.id'}}=
3852: $env{'course.'.$env{'request.course.id'}.'.type'};
3853: if (defined $courselogs{$env{'request.course.id'}}) {
3854: $courselogs{$env{'request.course.id'}}.='&'.$what;
3855: } else {
3856: $courselogs{$env{'request.course.id'}}.=$what;
3857: }
3858: if (length($courselogs{$env{'request.course.id'}})>4048) {
3859: &flushcourselogs();
3860: }
3861: }
3862:
3863: sub courseacclog {
3864: my $fnsymb=shift;
3865: unless ($env{'request.course.id'}) { return ''; }
3866: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3867: if ($fnsymb=~/$LONCAPA::assess_re/) {
3868: $what.=':POST';
3869: # FIXME: Probably ought to escape things....
3870: foreach my $key (keys(%env)) {
3871: if ($key=~/^form\.(.*)/) {
3872: my $formitem = $1;
3873: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3874: $what.=':'.$formitem.'='.$env{$key};
3875: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3876: $what.=':'.$formitem.'='.$env{$key};
3877: }
3878: }
3879: }
3880: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3881: # FIXME: We should not be depending on a form parameter that someone
3882: # editing lonsearchcat.pm might change in the future.
3883: if ($env{'form.phase'} eq 'course_search') {
3884: $what.= ':POST';
3885: # FIXME: Probably ought to escape things....
3886: foreach my $element ('courseexp','crsfulltext','crsrelated',
3887: 'crsdiscuss') {
3888: $what.=':'.$element.'='.$env{'form.'.$element};
3889: }
3890: }
3891: }
3892: &courselog($what);
3893: }
3894:
3895: sub countacc {
3896: my $url=&declutter(shift);
3897: return if (! defined($url) || $url eq '');
3898: unless ($env{'request.course.id'}) { return ''; }
3899: #
3900: # Mark that this url was used in this course
3901: #
3902: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3903: #
3904: # Increase the access count for this resource in this child process
3905: #
3906: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3907: $accesshash{$key}++;
3908: }
3909:
3910: sub linklog {
3911: my ($from,$to)=@_;
3912: $from=&declutter($from);
3913: $to=&declutter($to);
3914: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3915: $accesshash{$to.'___'.$from.'___goto'}=1;
3916: }
3917:
3918: sub statslog {
3919: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3920: if ($users<2) { return; }
3921: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3922: 'course' => $env{'request.course.id'},
3923: 'sections' => '"all"',
3924: 'num_students' => $users,
3925: 'part' => $part,
3926: 'symb' => $symb,
3927: 'mean_tries' => $av_attempts,
3928: 'deg_of_diff' => $degdiff});
3929: foreach my $key (keys(%dynstore)) {
3930: $accesshash{$key}=$dynstore{$key};
3931: }
3932: }
3933:
3934: sub userrolelog {
3935: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3936: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3937: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3938: $userrolehash
3939: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3940: =$tend.':'.$tstart;
3941: }
3942: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3943: $userrolehash
3944: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3945: =$tend.':'.$tstart;
3946: }
3947: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3948: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3949: $domainrolehash
3950: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3951: = $tend.':'.$tstart;
3952: }
3953: }
3954:
3955: sub courserolelog {
3956: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3957: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3958: my $cdom = $1;
3959: my $cnum = $2;
3960: my $sec = $3;
3961: my $namespace = 'rolelog';
3962: my %storehash = (
3963: role => $trole,
3964: start => $tstart,
3965: end => $tend,
3966: selfenroll => $selfenroll,
3967: context => $context,
3968: );
3969: if ($trole eq 'gr') {
3970: $namespace = 'groupslog';
3971: $storehash{'group'} = $sec;
3972: } else {
3973: $storehash{'section'} = $sec;
3974: }
3975: &write_log('course',$namespace,\%storehash,$delflag,$username,
3976: $domain,$cnum,$cdom);
3977: if (($trole ne 'st') || ($sec ne '')) {
3978: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3979: }
3980: }
3981: return;
3982: }
3983:
3984: sub domainrolelog {
3985: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3986: if ($area =~ m{^/($match_domain)/$}) {
3987: my $cdom = $1;
3988: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3989: my $namespace = 'rolelog';
3990: my %storehash = (
3991: role => $trole,
3992: start => $tstart,
3993: end => $tend,
3994: context => $context,
3995: );
3996: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3997: $domain,$domconfiguser,$cdom);
3998: }
3999: return;
4000:
4001: }
4002:
4003: sub coauthorrolelog {
4004: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4005: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4006: my $audom = $1;
4007: my $auname = $2;
4008: my $namespace = 'rolelog';
4009: my %storehash = (
4010: role => $trole,
4011: start => $tstart,
4012: end => $tend,
4013: context => $context,
4014: );
4015: &write_log('author',$namespace,\%storehash,$delflag,$username,
4016: $domain,$auname,$audom);
4017: }
4018: return;
4019: }
4020:
4021: sub get_course_adv_roles {
4022: my ($cid,$codes) = @_;
4023: $cid=$env{'request.course.id'} unless (defined($cid));
4024: my %coursehash=&coursedescription($cid);
4025: my $crstype = &Apache::loncommon::course_type($cid);
4026: my %nothide=();
4027: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4028: if ($user !~ /:/) {
4029: $nothide{join(':',split(/[\@]/,$user))}=1;
4030: } else {
4031: $nothide{$user}=1;
4032: }
4033: }
4034: my @possdoms = ($coursehash{'domain'});
4035: if ($coursehash{'checkforpriv'}) {
4036: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4037: }
4038: my %returnhash=();
4039: my %dumphash=
4040: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4041: my $now=time;
4042: my %privileged;
4043: foreach my $entry (keys(%dumphash)) {
4044: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4045: if (($tstart) && ($tstart<0)) { next; }
4046: if (($tend) && ($tend<$now)) { next; }
4047: if (($tstart) && ($now<$tstart)) { next; }
4048: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4049: if ($username eq '' || $domain eq '') { next; }
4050: if ((&privileged($username,$domain,\@possdoms)) &&
4051: (!$nothide{$username.':'.$domain})) { next; }
4052: if ($role eq 'cr') { next; }
4053: if ($codes) {
4054: if ($section) { $role .= ':'.$section; }
4055: if ($returnhash{$role}) {
4056: $returnhash{$role}.=','.$username.':'.$domain;
4057: } else {
4058: $returnhash{$role}=$username.':'.$domain;
4059: }
4060: } else {
4061: my $key=&plaintext($role,$crstype);
4062: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4063: if ($returnhash{$key}) {
4064: $returnhash{$key}.=','.$username.':'.$domain;
4065: } else {
4066: $returnhash{$key}=$username.':'.$domain;
4067: }
4068: }
4069: }
4070: return %returnhash;
4071: }
4072:
4073: sub get_my_roles {
4074: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4075: unless (defined($uname)) { $uname=$env{'user.name'}; }
4076: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4077: my (%dumphash,%nothide);
4078: if ($context eq 'userroles') {
4079: %dumphash = &dump('roles',$udom,$uname);
4080: } else {
4081: %dumphash = &dump('nohist_userroles',$udom,$uname);
4082: if ($hidepriv) {
4083: my %coursehash=&coursedescription($udom.'_'.$uname);
4084: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4085: if ($user !~ /:/) {
4086: $nothide{join(':',split(/[\@]/,$user))} = 1;
4087: } else {
4088: $nothide{$user} = 1;
4089: }
4090: }
4091: }
4092: }
4093: my %returnhash=();
4094: my $now=time;
4095: my %privileged;
4096: foreach my $entry (keys(%dumphash)) {
4097: my ($role,$tend,$tstart);
4098: if ($context eq 'userroles') {
4099: next if ($entry =~ /^rolesdef/);
4100: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4101: } else {
4102: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4103: }
4104: if (($tstart) && ($tstart<0)) { next; }
4105: my $status = 'active';
4106: if (($tend) && ($tend<=$now)) {
4107: $status = 'previous';
4108: }
4109: if (($tstart) && ($now<$tstart)) {
4110: $status = 'future';
4111: }
4112: if (ref($types) eq 'ARRAY') {
4113: if (!grep(/^\Q$status\E$/,@{$types})) {
4114: next;
4115: }
4116: } else {
4117: if ($status ne 'active') {
4118: next;
4119: }
4120: }
4121: my ($rolecode,$username,$domain,$section,$area);
4122: if ($context eq 'userroles') {
4123: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4124: (undef,$domain,$username,$section) = split(/\//,$area);
4125: } else {
4126: ($role,$username,$domain,$section) = split(/\:/,$entry);
4127: }
4128: if (ref($roledoms) eq 'ARRAY') {
4129: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4130: next;
4131: }
4132: }
4133: if (ref($roles) eq 'ARRAY') {
4134: if (!grep(/^\Q$role\E$/,@{$roles})) {
4135: if ($role =~ /^cr\//) {
4136: if (!grep(/^cr$/,@{$roles})) {
4137: next;
4138: }
4139: } elsif ($role =~ /^gr\//) {
4140: if (!grep(/^gr$/,@{$roles})) {
4141: next;
4142: }
4143: } else {
4144: next;
4145: }
4146: }
4147: }
4148: if ($hidepriv) {
4149: my @privroles = ('dc','su');
4150: if ($context eq 'userroles') {
4151: next if (grep(/^\Q$role\E$/,@privroles));
4152: } else {
4153: my $possdoms = [$domain];
4154: if (ref($roledoms) eq 'ARRAY') {
4155: push(@{$possdoms},@{$roledoms});
4156: }
4157: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4158: if (!$nothide{$username.':'.$domain}) {
4159: next;
4160: }
4161: }
4162: }
4163: }
4164: if ($withsec) {
4165: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4166: $tstart.':'.$tend;
4167: } else {
4168: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4169: }
4170: }
4171: return %returnhash;
4172: }
4173:
4174: # ----------------------------------------------------- Frontpage Announcements
4175: #
4176: #
4177:
4178: sub postannounce {
4179: my ($server,$text)=@_;
4180: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4181: unless ($text=~/\w/) { $text=''; }
4182: return &reply('setannounce:'.&escape($text),$server);
4183: }
4184:
4185: sub getannounce {
4186:
4187: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4188: my $announcement='';
4189: while (my $line = <$fh>) { $announcement .= $line; }
4190: close($fh);
4191: if ($announcement=~/\w/) {
4192: return
4193: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4194: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4195: } else {
4196: return '';
4197: }
4198: } else {
4199: return '';
4200: }
4201: }
4202:
4203: # ---------------------------------------------------------- Course ID routines
4204: # Deal with domain's nohist_courseid.db files
4205: #
4206:
4207: sub courseidput {
4208: my ($domain,$storehash,$coursehome,$caller) = @_;
4209: return unless (ref($storehash) eq 'HASH');
4210: my $outcome;
4211: if ($caller eq 'timeonly') {
4212: my $cids = '';
4213: foreach my $item (keys(%$storehash)) {
4214: $cids.=&escape($item).'&';
4215: }
4216: $cids=~s/\&$//;
4217: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4218: $coursehome);
4219: } else {
4220: my $items = '';
4221: foreach my $item (keys(%$storehash)) {
4222: $items.= &escape($item).'='.
4223: &freeze_escape($$storehash{$item}).'&';
4224: }
4225: $items=~s/\&$//;
4226: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4227: $coursehome);
4228: }
4229: if ($outcome eq 'unknown_cmd') {
4230: my $what;
4231: foreach my $cid (keys(%$storehash)) {
4232: $what .= &escape($cid).'=';
4233: foreach my $item ('description','inst_code','owner','type') {
4234: $what .= &escape($storehash->{$cid}{$item}).':';
4235: }
4236: $what =~ s/\:$/&/;
4237: }
4238: $what =~ s/\&$//;
4239: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4240: } else {
4241: return $outcome;
4242: }
4243: }
4244:
4245: sub courseiddump {
4246: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4247: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4248: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4249: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4250: $hasuniquecode)=@_;
4251: my $as_hash = 1;
4252: my %returnhash;
4253: if (!$domfilter) { $domfilter=''; }
4254: my %libserv = &all_library();
4255: foreach my $tryserver (keys(%libserv)) {
4256: if ( ( $hostidflag == 1
4257: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4258: || (!defined($hostidflag)) ) {
4259:
4260: if (($domfilter eq '') ||
4261: (&host_domain($tryserver) eq $domfilter)) {
4262: my $rep;
4263: if (grep { $_ eq $tryserver } current_machine_ids()) {
4264: $rep = LONCAPA::Lond::dump_course_id_handler(
4265: join(":", (&host_domain($tryserver), $sincefilter,
4266: &escape($descfilter), &escape($instcodefilter),
4267: &escape($ownerfilter), &escape($coursefilter),
4268: &escape($typefilter), &escape($regexp_ok),
4269: $as_hash, &escape($selfenrollonly),
4270: &escape($catfilter), $showhidden, $caller,
4271: &escape($cloner), &escape($cc_clone), $cloneonly,
4272: &escape($createdbefore), &escape($createdafter),
4273: &escape($creationcontext), $domcloner, $hasuniquecode)));
4274: } else {
4275: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4276: $sincefilter.':'.&escape($descfilter).':'.
4277: &escape($instcodefilter).':'.&escape($ownerfilter).
4278: ':'.&escape($coursefilter).':'.&escape($typefilter).
4279: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4280: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4281: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4282: &escape($cc_clone).':'.$cloneonly.':'.
4283: &escape($createdbefore).':'.&escape($createdafter).':'.
4284: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode,
4285: $tryserver);
4286: }
4287:
4288: my @pairs=split(/\&/,$rep);
4289: foreach my $item (@pairs) {
4290: my ($key,$value)=split(/\=/,$item,2);
4291: $key = &unescape($key);
4292: next if ($key =~ /^error: 2 /);
4293: my $result = &thaw_unescape($value);
4294: if (ref($result) eq 'HASH') {
4295: $returnhash{$key}=$result;
4296: } else {
4297: my @responses = split(/:/,$value);
4298: my @items = ('description','inst_code','owner','type');
4299: for (my $i=0; $i<@responses; $i++) {
4300: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4301: }
4302: }
4303: }
4304: }
4305: }
4306: }
4307: return %returnhash;
4308: }
4309:
4310: sub courselastaccess {
4311: my ($cdom,$cnum,$hostidref) = @_;
4312: my %returnhash;
4313: if ($cdom && $cnum) {
4314: my $chome = &homeserver($cnum,$cdom);
4315: if ($chome ne 'no_host') {
4316: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4317: &extract_lastaccess(\%returnhash,$rep);
4318: }
4319: } else {
4320: if (!$cdom) { $cdom=''; }
4321: my %libserv = &all_library();
4322: foreach my $tryserver (keys(%libserv)) {
4323: if (ref($hostidref) eq 'ARRAY') {
4324: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4325: }
4326: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4327: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4328: &extract_lastaccess(\%returnhash,$rep);
4329: }
4330: }
4331: }
4332: return %returnhash;
4333: }
4334:
4335: sub extract_lastaccess {
4336: my ($returnhash,$rep) = @_;
4337: if (ref($returnhash) eq 'HASH') {
4338: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4339: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4340: $rep eq '') {
4341: my @pairs=split(/\&/,$rep);
4342: foreach my $item (@pairs) {
4343: my ($key,$value)=split(/\=/,$item,2);
4344: $key = &unescape($key);
4345: next if ($key =~ /^error: 2 /);
4346: $returnhash->{$key} = &thaw_unescape($value);
4347: }
4348: }
4349: }
4350: return;
4351: }
4352:
4353: # ---------------------------------------------------------- DC e-mail
4354:
4355: sub dcmailput {
4356: my ($domain,$msgid,$message,$server)=@_;
4357: my $status = &Apache::lonnet::critical(
4358: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4359: &escape($message),$server);
4360: return $status;
4361: }
4362:
4363: sub dcmaildump {
4364: my ($dom,$startdate,$enddate,$senders) = @_;
4365: my %returnhash=();
4366:
4367: if (defined(&domain($dom,'primary'))) {
4368: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4369: &escape($enddate).':';
4370: my @esc_senders=map { &escape($_)} @$senders;
4371: $cmd.=&escape(join('&',@esc_senders));
4372: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4373: my ($key,$value) = split(/\=/,$line,2);
4374: if (($key) && ($value)) {
4375: $returnhash{&unescape($key)} = &unescape($value);
4376: }
4377: }
4378: }
4379: return %returnhash;
4380: }
4381: # ---------------------------------------------------------- Domain roles
4382:
4383: sub get_domain_roles {
4384: my ($dom,$roles,$startdate,$enddate)=@_;
4385: if ((!defined($startdate)) || ($startdate eq '')) {
4386: $startdate = '.';
4387: }
4388: if ((!defined($enddate)) || ($enddate eq '')) {
4389: $enddate = '.';
4390: }
4391: my $rolelist;
4392: if (ref($roles) eq 'ARRAY') {
4393: $rolelist = join('&',@{$roles});
4394: }
4395: my %personnel = ();
4396:
4397: my %servers = &get_servers($dom,'library');
4398: foreach my $tryserver (keys(%servers)) {
4399: %{$personnel{$tryserver}}=();
4400: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4401: &escape($startdate).':'.
4402: &escape($enddate).':'.
4403: &escape($rolelist), $tryserver))) {
4404: my ($key,$value) = split(/\=/,$line,2);
4405: if (($key) && ($value)) {
4406: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4407: }
4408: }
4409: }
4410: return %personnel;
4411: }
4412:
4413: # ----------------------------------------------------------- Interval timing
4414:
4415: {
4416: # Caches needed for speedup of navmaps
4417: # We don't want to cache this for very long at all (5 seconds at most)
4418: #
4419: # The user for whom we cache
4420: my $cachedkey='';
4421: # The cached times for this user
4422: my %cachedtimes=();
4423: # When this was last done
4424: my $cachedtime=();
4425:
4426: sub load_all_first_access {
4427: my ($uname,$udom)=@_;
4428: if (($cachedkey eq $uname.':'.$udom) &&
4429: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4430: return;
4431: }
4432: $cachedtime=time;
4433: $cachedkey=$uname.':'.$udom;
4434: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4435: }
4436:
4437: sub get_first_access {
4438: my ($type,$argsymb,$argmap)=@_;
4439: my ($symb,$courseid,$udom,$uname)=&whichuser();
4440: if ($argsymb) { $symb=$argsymb; }
4441: my ($map,$id,$res)=&decode_symb($symb);
4442: if ($argmap) { $map = $argmap; }
4443: if ($type eq 'course') {
4444: $res='course';
4445: } elsif ($type eq 'map') {
4446: $res=&symbread($map);
4447: } else {
4448: $res=$symb;
4449: }
4450: &load_all_first_access($uname,$udom);
4451: return $cachedtimes{"$courseid\0$res"};
4452: }
4453:
4454: sub set_first_access {
4455: my ($type,$interval)=@_;
4456: my ($symb,$courseid,$udom,$uname)=&whichuser();
4457: my ($map,$id,$res)=&decode_symb($symb);
4458: if ($type eq 'course') {
4459: $res='course';
4460: } elsif ($type eq 'map') {
4461: $res=&symbread($map);
4462: } else {
4463: $res=$symb;
4464: }
4465: $cachedkey='';
4466: my $firstaccess=&get_first_access($type,$symb,$map);
4467: if (!$firstaccess) {
4468: my $start = time;
4469: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4470: $udom,$uname);
4471: if ($putres eq 'ok') {
4472: &put('timerinterval',{"$courseid\0$res"=>$interval},
4473: $udom,$uname);
4474: &appenv(
4475: {
4476: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4477: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4478: }
4479: );
4480: }
4481: return $putres;
4482: }
4483: return 'already_set';
4484: }
4485: }
4486: # --------------------------------------------- Set Expire Date for Spreadsheet
4487:
4488: sub expirespread {
4489: my ($uname,$udom,$stype,$usymb)=@_;
4490: my $cid=$env{'request.course.id'};
4491: if ($cid) {
4492: my $now=time;
4493: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4494: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4495: $env{'course.'.$cid.'.num'}.
4496: ':nohist_expirationdates:'.
4497: &escape($key).'='.$now,
4498: $env{'course.'.$cid.'.home'})
4499: }
4500: return 'ok';
4501: }
4502:
4503: # ----------------------------------------------------- Devalidate Spreadsheets
4504:
4505: sub devalidate {
4506: my ($symb,$uname,$udom)=@_;
4507: my $cid=$env{'request.course.id'};
4508: if ($cid) {
4509: # delete the stored spreadsheets for
4510: # - the student level sheet of this user in course's homespace
4511: # - the assessment level sheet for this resource
4512: # for this user in user's homespace
4513: # - current conditional state info
4514: my $key=$uname.':'.$udom.':';
4515: my $status=
4516: &del('nohist_calculatedsheets',
4517: [$key.'studentcalc:'],
4518: $env{'course.'.$cid.'.domain'},
4519: $env{'course.'.$cid.'.num'})
4520: .' '.
4521: &del('nohist_calculatedsheets_'.$cid,
4522: [$key.'assesscalc:'.$symb],$udom,$uname);
4523: unless ($status eq 'ok ok') {
4524: &logthis('Could not devalidate spreadsheet '.
4525: $uname.' at '.$udom.' for '.
4526: $symb.': '.$status);
4527: }
4528: &delenv('user.state.'.$cid);
4529: }
4530: }
4531:
4532: sub get_scalar {
4533: my ($string,$end) = @_;
4534: my $value;
4535: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4536: $value = $1;
4537: } elsif ($$string =~ s/^([^&]*?)&//) {
4538: $value = $1;
4539: }
4540: return &unescape($value);
4541: }
4542:
4543: sub array2str {
4544: my (@array) = @_;
4545: my $result=&arrayref2str(\@array);
4546: $result=~s/^__ARRAY_REF__//;
4547: $result=~s/__END_ARRAY_REF__$//;
4548: return $result;
4549: }
4550:
4551: sub arrayref2str {
4552: my ($arrayref) = @_;
4553: my $result='__ARRAY_REF__';
4554: foreach my $elem (@$arrayref) {
4555: if(ref($elem) eq 'ARRAY') {
4556: $result.=&arrayref2str($elem).'&';
4557: } elsif(ref($elem) eq 'HASH') {
4558: $result.=&hashref2str($elem).'&';
4559: } elsif(ref($elem)) {
4560: #print("Got a ref of ".(ref($elem))." skipping.");
4561: } else {
4562: $result.=&escape($elem).'&';
4563: }
4564: }
4565: $result=~s/\&$//;
4566: $result .= '__END_ARRAY_REF__';
4567: return $result;
4568: }
4569:
4570: sub hash2str {
4571: my (%hash) = @_;
4572: my $result=&hashref2str(\%hash);
4573: $result=~s/^__HASH_REF__//;
4574: $result=~s/__END_HASH_REF__$//;
4575: return $result;
4576: }
4577:
4578: sub hashref2str {
4579: my ($hashref)=@_;
4580: my $result='__HASH_REF__';
4581: foreach my $key (sort(keys(%$hashref))) {
4582: if (ref($key) eq 'ARRAY') {
4583: $result.=&arrayref2str($key).'=';
4584: } elsif (ref($key) eq 'HASH') {
4585: $result.=&hashref2str($key).'=';
4586: } elsif (ref($key)) {
4587: $result.='=';
4588: #print("Got a ref of ".(ref($key))." skipping.");
4589: } else {
4590: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4591: }
4592:
4593: if(ref($hashref->{$key}) eq 'ARRAY') {
4594: $result.=&arrayref2str($hashref->{$key}).'&';
4595: } elsif(ref($hashref->{$key}) eq 'HASH') {
4596: $result.=&hashref2str($hashref->{$key}).'&';
4597: } elsif(ref($hashref->{$key})) {
4598: $result.='&';
4599: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4600: } else {
4601: $result.=&escape($hashref->{$key}).'&';
4602: }
4603: }
4604: $result=~s/\&$//;
4605: $result .= '__END_HASH_REF__';
4606: return $result;
4607: }
4608:
4609: sub str2hash {
4610: my ($string)=@_;
4611: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4612: return %$hash;
4613: }
4614:
4615: sub str2hashref {
4616: my ($string) = @_;
4617:
4618: my %hash;
4619:
4620: if($string !~ /^__HASH_REF__/) {
4621: if (! ($string eq '' || !defined($string))) {
4622: $hash{'error'}='Not hash reference';
4623: }
4624: return (\%hash, $string);
4625: }
4626:
4627: $string =~ s/^__HASH_REF__//;
4628:
4629: while($string !~ /^__END_HASH_REF__/) {
4630: #key
4631: my $key='';
4632: if($string =~ /^__HASH_REF__/) {
4633: ($key, $string)=&str2hashref($string);
4634: if(defined($key->{'error'})) {
4635: $hash{'error'}='Bad data';
4636: return (\%hash, $string);
4637: }
4638: } elsif($string =~ /^__ARRAY_REF__/) {
4639: ($key, $string)=&str2arrayref($string);
4640: if($key->[0] eq 'Array reference error') {
4641: $hash{'error'}='Bad data';
4642: return (\%hash, $string);
4643: }
4644: } else {
4645: $string =~ s/^(.*?)=//;
4646: $key=&unescape($1);
4647: }
4648: $string =~ s/^=//;
4649:
4650: #value
4651: my $value='';
4652: if($string =~ /^__HASH_REF__/) {
4653: ($value, $string)=&str2hashref($string);
4654: if(defined($value->{'error'})) {
4655: $hash{'error'}='Bad data';
4656: return (\%hash, $string);
4657: }
4658: } elsif($string =~ /^__ARRAY_REF__/) {
4659: ($value, $string)=&str2arrayref($string);
4660: if($value->[0] eq 'Array reference error') {
4661: $hash{'error'}='Bad data';
4662: return (\%hash, $string);
4663: }
4664: } else {
4665: $value=&get_scalar(\$string,'__END_HASH_REF__');
4666: }
4667: $string =~ s/^&//;
4668:
4669: $hash{$key}=$value;
4670: }
4671:
4672: $string =~ s/^__END_HASH_REF__//;
4673:
4674: return (\%hash, $string);
4675: }
4676:
4677: sub str2array {
4678: my ($string)=@_;
4679: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4680: return @$array;
4681: }
4682:
4683: sub str2arrayref {
4684: my ($string) = @_;
4685: my @array;
4686:
4687: if($string !~ /^__ARRAY_REF__/) {
4688: if (! ($string eq '' || !defined($string))) {
4689: $array[0]='Array reference error';
4690: }
4691: return (\@array, $string);
4692: }
4693:
4694: $string =~ s/^__ARRAY_REF__//;
4695:
4696: while($string !~ /^__END_ARRAY_REF__/) {
4697: my $value='';
4698: if($string =~ /^__HASH_REF__/) {
4699: ($value, $string)=&str2hashref($string);
4700: if(defined($value->{'error'})) {
4701: $array[0] ='Array reference error';
4702: return (\@array, $string);
4703: }
4704: } elsif($string =~ /^__ARRAY_REF__/) {
4705: ($value, $string)=&str2arrayref($string);
4706: if($value->[0] eq 'Array reference error') {
4707: $array[0] ='Array reference error';
4708: return (\@array, $string);
4709: }
4710: } else {
4711: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4712: }
4713: $string =~ s/^&//;
4714:
4715: push(@array, $value);
4716: }
4717:
4718: $string =~ s/^__END_ARRAY_REF__//;
4719:
4720: return (\@array, $string);
4721: }
4722:
4723: # -------------------------------------------------------------------Temp Store
4724:
4725: sub tmpreset {
4726: my ($symb,$namespace,$domain,$stuname) = @_;
4727: if (!$symb) {
4728: $symb=&symbread();
4729: if (!$symb) { $symb= $env{'request.url'}; }
4730: }
4731: $symb=escape($symb);
4732:
4733: if (!$namespace) { $namespace=$env{'request.state'}; }
4734: $namespace=~s/\//\_/g;
4735: $namespace=~s/\W//g;
4736:
4737: if (!$domain) { $domain=$env{'user.domain'}; }
4738: if (!$stuname) { $stuname=$env{'user.name'}; }
4739: if ($domain eq 'public' && $stuname eq 'public') {
4740: $stuname=$ENV{'REMOTE_ADDR'};
4741: }
4742: my $path=LONCAPA::tempdir();
4743: my %hash;
4744: if (tie(%hash,'GDBM_File',
4745: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4746: &GDBM_WRCREAT(),0640)) {
4747: foreach my $key (keys(%hash)) {
4748: if ($key=~ /:$symb/) {
4749: delete($hash{$key});
4750: }
4751: }
4752: }
4753: }
4754:
4755: sub tmpstore {
4756: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4757:
4758: if (!$symb) {
4759: $symb=&symbread();
4760: if (!$symb) { $symb= $env{'request.url'}; }
4761: }
4762: $symb=escape($symb);
4763:
4764: if (!$namespace) {
4765: # I don't think we would ever want to store this for a course.
4766: # it seems this will only be used if we don't have a course.
4767: #$namespace=$env{'request.course.id'};
4768: #if (!$namespace) {
4769: $namespace=$env{'request.state'};
4770: #}
4771: }
4772: $namespace=~s/\//\_/g;
4773: $namespace=~s/\W//g;
4774: if (!$domain) { $domain=$env{'user.domain'}; }
4775: if (!$stuname) { $stuname=$env{'user.name'}; }
4776: if ($domain eq 'public' && $stuname eq 'public') {
4777: $stuname=$ENV{'REMOTE_ADDR'};
4778: }
4779: my $now=time;
4780: my %hash;
4781: my $path=LONCAPA::tempdir();
4782: if (tie(%hash,'GDBM_File',
4783: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4784: &GDBM_WRCREAT(),0640)) {
4785: $hash{"version:$symb"}++;
4786: my $version=$hash{"version:$symb"};
4787: my $allkeys='';
4788: foreach my $key (keys(%$storehash)) {
4789: $allkeys.=$key.':';
4790: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4791: }
4792: $hash{"$version:$symb:timestamp"}=$now;
4793: $allkeys.='timestamp';
4794: $hash{"$version:keys:$symb"}=$allkeys;
4795: if (untie(%hash)) {
4796: return 'ok';
4797: } else {
4798: return "error:$!";
4799: }
4800: } else {
4801: return "error:$!";
4802: }
4803: }
4804:
4805: # -----------------------------------------------------------------Temp Restore
4806:
4807: sub tmprestore {
4808: my ($symb,$namespace,$domain,$stuname) = @_;
4809:
4810: if (!$symb) {
4811: $symb=&symbread();
4812: if (!$symb) { $symb= $env{'request.url'}; }
4813: }
4814: $symb=escape($symb);
4815:
4816: if (!$namespace) { $namespace=$env{'request.state'}; }
4817:
4818: if (!$domain) { $domain=$env{'user.domain'}; }
4819: if (!$stuname) { $stuname=$env{'user.name'}; }
4820: if ($domain eq 'public' && $stuname eq 'public') {
4821: $stuname=$ENV{'REMOTE_ADDR'};
4822: }
4823: my %returnhash;
4824: $namespace=~s/\//\_/g;
4825: $namespace=~s/\W//g;
4826: my %hash;
4827: my $path=LONCAPA::tempdir();
4828: if (tie(%hash,'GDBM_File',
4829: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4830: &GDBM_READER(),0640)) {
4831: my $version=$hash{"version:$symb"};
4832: $returnhash{'version'}=$version;
4833: my $scope;
4834: for ($scope=1;$scope<=$version;$scope++) {
4835: my $vkeys=$hash{"$scope:keys:$symb"};
4836: my @keys=split(/:/,$vkeys);
4837: my $key;
4838: $returnhash{"$scope:keys"}=$vkeys;
4839: foreach $key (@keys) {
4840: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4841: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4842: }
4843: }
4844: if (!(untie(%hash))) {
4845: return "error:$!";
4846: }
4847: } else {
4848: return "error:$!";
4849: }
4850: return %returnhash;
4851: }
4852:
4853: # ----------------------------------------------------------------------- Store
4854:
4855: sub store {
4856: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4857: my $home='';
4858:
4859: if ($stuname) { $home=&homeserver($stuname,$domain); }
4860:
4861: $symb=&symbclean($symb);
4862: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4863:
4864: if (!$domain) { $domain=$env{'user.domain'}; }
4865: if (!$stuname) { $stuname=$env{'user.name'}; }
4866:
4867: &devalidate($symb,$stuname,$domain);
4868:
4869: $symb=escape($symb);
4870: if (!$namespace) {
4871: unless ($namespace=$env{'request.course.id'}) {
4872: return '';
4873: }
4874: }
4875: if (!$home) { $home=$env{'user.home'}; }
4876:
4877: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4878: $$storehash{'host'}=$perlvar{'lonHostID'};
4879:
4880: my $namevalue='';
4881: foreach my $key (keys(%$storehash)) {
4882: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4883: }
4884: $namevalue=~s/\&$//;
4885: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4886: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
4887: }
4888:
4889: # -------------------------------------------------------------- Critical Store
4890:
4891: sub cstore {
4892: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4893: my $home='';
4894:
4895: if ($stuname) { $home=&homeserver($stuname,$domain); }
4896:
4897: $symb=&symbclean($symb);
4898: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4899:
4900: if (!$domain) { $domain=$env{'user.domain'}; }
4901: if (!$stuname) { $stuname=$env{'user.name'}; }
4902:
4903: &devalidate($symb,$stuname,$domain);
4904:
4905: $symb=escape($symb);
4906: if (!$namespace) {
4907: unless ($namespace=$env{'request.course.id'}) {
4908: return '';
4909: }
4910: }
4911: if (!$home) { $home=$env{'user.home'}; }
4912:
4913: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4914: $$storehash{'host'}=$perlvar{'lonHostID'};
4915:
4916: my $namevalue='';
4917: foreach my $key (keys(%$storehash)) {
4918: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4919: }
4920: $namevalue=~s/\&$//;
4921: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4922: return critical
4923: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
4924: }
4925:
4926: # --------------------------------------------------------------------- Restore
4927:
4928: sub restore {
4929: my ($symb,$namespace,$domain,$stuname) = @_;
4930: my $home='';
4931:
4932: if ($stuname) { $home=&homeserver($stuname,$domain); }
4933:
4934: if (!$symb) {
4935: return if ($namespace eq 'courserequests');
4936: unless ($symb=escape(&symbread())) { return ''; }
4937: } else {
4938: unless ($namespace eq 'courserequests') {
4939: $symb=&escape(&symbclean($symb));
4940: }
4941: }
4942: if (!$namespace) {
4943: unless ($namespace=$env{'request.course.id'}) {
4944: return '';
4945: }
4946: }
4947: if (!$domain) { $domain=$env{'user.domain'}; }
4948: if (!$stuname) { $stuname=$env{'user.name'}; }
4949: if (!$home) { $home=$env{'user.home'}; }
4950: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4951:
4952: my %returnhash=();
4953: foreach my $line (split(/\&/,$answer)) {
4954: my ($name,$value)=split(/\=/,$line);
4955: $returnhash{&unescape($name)}=&thaw_unescape($value);
4956: }
4957: my $version;
4958: for ($version=1;$version<=$returnhash{'version'};$version++) {
4959: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4960: $returnhash{$item}=$returnhash{$version.':'.$item};
4961: }
4962: }
4963: return %returnhash;
4964: }
4965:
4966: # ---------------------------------------------------------- Course Description
4967: #
4968: #
4969:
4970: sub coursedescription {
4971: my ($courseid,$args)=@_;
4972: $courseid=~s/^\///;
4973: $courseid=~s/\_/\//g;
4974: my ($cdomain,$cnum)=split(/\//,$courseid);
4975: my $chome=&homeserver($cnum,$cdomain);
4976: my $normalid=$cdomain.'_'.$cnum;
4977: # need to always cache even if we get errors otherwise we keep
4978: # trying and trying and trying to get the course description.
4979: my %envhash=();
4980: my %returnhash=();
4981:
4982: my $expiretime=600;
4983: if ($env{'request.course.id'} eq $normalid) {
4984: $expiretime=120;
4985: }
4986:
4987: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4988: if (!$args->{'freshen_cache'}
4989: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4990: foreach my $key (keys(%env)) {
4991: next if ($key !~ /^\Q$prefix\E(.*)/);
4992: my ($setting) = $1;
4993: $returnhash{$setting} = $env{$key};
4994: }
4995: return %returnhash;
4996: }
4997:
4998: # get the data again
4999:
5000: if (!$args->{'one_time'}) {
5001: $envhash{'course.'.$normalid.'.last_cache'}=time;
5002: }
5003:
5004: if ($chome ne 'no_host') {
5005: %returnhash=&dump('environment',$cdomain,$cnum);
5006: if (!exists($returnhash{'con_lost'})) {
5007: my $username = $env{'user.name'}; # Defult username
5008: if(defined $args->{'user'}) {
5009: $username = $args->{'user'};
5010: }
5011: $returnhash{'home'}= $chome;
5012: $returnhash{'domain'} = $cdomain;
5013: $returnhash{'num'} = $cnum;
5014: if (!defined($returnhash{'type'})) {
5015: $returnhash{'type'} = 'Course';
5016: }
5017: while (my ($name,$value) = each %returnhash) {
5018: $envhash{'course.'.$normalid.'.'.$name}=$value;
5019: }
5020: $returnhash{'url'}=&clutter($returnhash{'url'});
5021: $returnhash{'fn'}=LONCAPA::tempdir() .
5022: $username.'_'.$cdomain.'_'.$cnum;
5023: $envhash{'course.'.$normalid.'.home'}=$chome;
5024: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5025: $envhash{'course.'.$normalid.'.num'}=$cnum;
5026: }
5027: }
5028: if (!$args->{'one_time'}) {
5029: &appenv(\%envhash);
5030: }
5031: return %returnhash;
5032: }
5033:
5034: sub update_released_required {
5035: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5036: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5037: $cid = $env{'request.course.id'};
5038: $cdom = $env{'course.'.$cid.'.domain'};
5039: $cnum = $env{'course.'.$cid.'.num'};
5040: $chome = $env{'course.'.$cid.'.home'};
5041: }
5042: if ($needsrelease) {
5043: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5044: my $needsupdate;
5045: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5046: $needsupdate = 1;
5047: } else {
5048: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5049: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5050: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5051: $needsupdate = 1;
5052: }
5053: }
5054: if ($needsupdate) {
5055: my %needshash = (
5056: 'internal.releaserequired' => $needsrelease,
5057: );
5058: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5059: if ($putresult eq 'ok') {
5060: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5061: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5062: if (ref($crsinfo{$cid}) eq 'HASH') {
5063: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5064: &courseidput($cdom,\%crsinfo,$chome,'notime');
5065: }
5066: }
5067: }
5068: }
5069: return;
5070: }
5071:
5072: # -------------------------------------------------See if a user is privileged
5073:
5074: sub privileged {
5075: my ($username,$domain,$possdomains,$possroles)=@_;
5076: my $now = time;
5077: my $roles;
5078: if (ref($possroles) eq 'ARRAY') {
5079: $roles = $possroles;
5080: } else {
5081: $roles = ['dc','su'];
5082: }
5083: if (ref($possdomains) eq 'ARRAY') {
5084: my %privileged = &privileged_by_domain($possdomains,$roles);
5085: foreach my $dom (@{$possdomains}) {
5086: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5087: (ref($privileged{$dom}) eq 'HASH')) {
5088: foreach my $role (@{$roles}) {
5089: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5090: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5091: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5092: return 1 unless (($end && $end < $now) ||
5093: ($start && $start > $now));
5094: }
5095: }
5096: }
5097: }
5098: }
5099: } else {
5100: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5101: my $now = time;
5102:
5103: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
5104: my ($trole, $tend, $tstart) = split(/_/, $role);
5105: if (grep(/^\Q$trole\E$/,@{$roles})) {
5106: return 1 unless ($tend && $tend < $now)
5107: or ($tstart && $tstart > $now);
5108: }
5109: }
5110: }
5111: return 0;
5112: }
5113:
5114: sub privileged_by_domain {
5115: my ($domains,$roles) = @_;
5116: my %privileged = ();
5117: my $cachetime = 60*60*24;
5118: my $now = time;
5119: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5120: return %privileged;
5121: }
5122: foreach my $dom (@{$domains}) {
5123: next if (ref($privileged{$dom}) eq 'HASH');
5124: my $needroles;
5125: foreach my $role (@{$roles}) {
5126: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5127: if (defined($cached)) {
5128: if (ref($result) eq 'HASH') {
5129: $privileged{$dom}{$role} = $result;
5130: }
5131: } else {
5132: $needroles = 1;
5133: }
5134: }
5135: if ($needroles) {
5136: my %dompersonnel = &get_domain_roles($dom,$roles);
5137: $privileged{$dom} = {};
5138: foreach my $server (keys(%dompersonnel)) {
5139: if (ref($dompersonnel{$server}) eq 'HASH') {
5140: foreach my $item (keys(%{$dompersonnel{$server}})) {
5141: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5142: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5143: next if ($end && $end < $now);
5144: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5145: $dompersonnel{$server}{$item};
5146: }
5147: }
5148: }
5149: if (ref($privileged{$dom}) eq 'HASH') {
5150: foreach my $role (@{$roles}) {
5151: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5152: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5153: } else {
5154: my %hash = ();
5155: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5156: }
5157: }
5158: }
5159: }
5160: }
5161: return %privileged;
5162: }
5163:
5164: # -------------------------------------------------------- Get user privileges
5165:
5166: sub rolesinit {
5167: my ($domain, $username) = @_;
5168: my %userroles = ('user.login.time' => time);
5169: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5170:
5171: # firstaccess and timerinterval are related to timed maps/resources.
5172: # also, blocking can be triggered by an activating timer
5173: # it's saved in the user's %env.
5174: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5175: my %timerinterval = &dump('timerinterval', $domain, $username);
5176: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5177: %timerintchk, %timerintenv);
5178:
5179: foreach my $key (keys(%firstaccess)) {
5180: my ($cid, $rest) = split(/\0/, $key);
5181: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5182: }
5183:
5184: foreach my $key (keys(%timerinterval)) {
5185: my ($cid,$rest) = split(/\0/,$key);
5186: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5187: }
5188:
5189: my %allroles=();
5190: my %allgroups=();
5191:
5192: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
5193: my $role = $rolesdump{$area};
5194: $area =~ s/\_\w\w$//;
5195:
5196: my ($trole, $tend, $tstart, $group_privs);
5197:
5198: if ($role =~ /^cr/) {
5199: # Custom role, defined by a user
5200: # e.g., user.role.cr/msu/smith/mynewrole
5201: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5202: $trole = $1;
5203: ($tend, $tstart) = split('_', $2);
5204: } else {
5205: $trole = $role;
5206: }
5207: } elsif ($role =~ m|^gr/|) {
5208: # Role of member in a group, defined within a course/community
5209: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5210: ($trole, $tend, $tstart) = split(/_/, $role);
5211: next if $tstart eq '-1';
5212: ($trole, $group_privs) = split(/\//, $trole);
5213: $group_privs = &unescape($group_privs);
5214: } else {
5215: # Just a normal role, defined in roles.tab
5216: ($trole, $tend, $tstart) = split(/_/,$role);
5217: }
5218:
5219: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5220: $username);
5221: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5222:
5223: # role expired or not available yet?
5224: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5225: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5226:
5227: next if $area eq '' or $trole eq '';
5228:
5229: my $spec = "$trole.$area";
5230: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5231:
5232: if ($trole =~ /^cr\//) {
5233: # Custom role, defined by a user
5234: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5235: } elsif ($trole eq 'gr') {
5236: # Role of a member in a group, defined within a course/community
5237: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5238: next;
5239: } else {
5240: # Normal role, defined in roles.tab
5241: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5242: }
5243:
5244: my $cid = $tdomain.'_'.$trest;
5245: unless ($firstaccchk{$cid}) {
5246: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5247: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5248: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5249: $coursetimerstarts{$cid}{$item};
5250: }
5251: }
5252: $firstaccchk{$cid} = 1;
5253: }
5254: unless ($timerintchk{$cid}) {
5255: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5256: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5257: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5258: $coursetimerintervals{$cid}{$item};
5259: }
5260: }
5261: $timerintchk{$cid} = 1;
5262: }
5263: }
5264:
5265: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5266: \%allroles, \%allgroups);
5267: $env{'user.adv'} = $userroles{'user.adv'};
5268:
5269: return (\%userroles,\%firstaccenv,\%timerintenv);
5270: }
5271:
5272: sub set_arearole {
5273: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5274: unless ($nolog) {
5275: # log the associated role with the area
5276: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5277: }
5278: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5279: }
5280:
5281: sub custom_roleprivs {
5282: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5283: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5284: my $homsvr = &homeserver($rauthor,$rdomain);
5285: if (&hostname($homsvr) ne '') {
5286: my ($rdummy,$roledef)=
5287: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5288: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5289: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5290: if (defined($syspriv)) {
5291: if ($trest =~ /^$match_community$/) {
5292: $syspriv =~ s/bre\&S//;
5293: }
5294: $$allroles{'cm./'}.=':'.$syspriv;
5295: $$allroles{$spec.'./'}.=':'.$syspriv;
5296: }
5297: if ($tdomain ne '') {
5298: if (defined($dompriv)) {
5299: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5300: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5301: }
5302: if (($trest ne '') && (defined($coursepriv))) {
5303: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5304: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5305: }
5306: }
5307: }
5308: }
5309: }
5310:
5311: sub group_roleprivs {
5312: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5313: my $access = 1;
5314: my $now = time;
5315: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5316: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5317: if ($access) {
5318: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5319: $$allgroups{$course}{$group} .=':'.$group_privs;
5320: }
5321: }
5322:
5323: sub standard_roleprivs {
5324: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5325: if (defined($pr{$trole.':s'})) {
5326: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5327: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5328: }
5329: if ($tdomain ne '') {
5330: if (defined($pr{$trole.':d'})) {
5331: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5332: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5333: }
5334: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5335: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5336: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5337: }
5338: }
5339: }
5340:
5341: sub set_userprivs {
5342: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5343: my $author=0;
5344: my $adv=0;
5345: my %grouproles = ();
5346: if (keys(%{$allgroups}) > 0) {
5347: my @groupkeys;
5348: foreach my $role (keys(%{$allroles})) {
5349: push(@groupkeys,$role);
5350: }
5351: if (ref($groups_roles) eq 'HASH') {
5352: foreach my $key (keys(%{$groups_roles})) {
5353: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5354: push(@groupkeys,$key);
5355: }
5356: }
5357: }
5358: if (@groupkeys > 0) {
5359: foreach my $role (@groupkeys) {
5360: my ($trole,$area,$sec,$extendedarea);
5361: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5362: $trole = $1;
5363: $area = $2;
5364: $sec = $3;
5365: $extendedarea = $area.$sec;
5366: if (exists($$allgroups{$area})) {
5367: foreach my $group (keys(%{$$allgroups{$area}})) {
5368: my $spec = $trole.'.'.$extendedarea;
5369: $grouproles{$spec.'.'.$area.'/'.$group} =
5370: $$allgroups{$area}{$group};
5371: }
5372: }
5373: }
5374: }
5375: }
5376: }
5377: foreach my $group (keys(%grouproles)) {
5378: $$allroles{$group} = $grouproles{$group};
5379: }
5380: foreach my $role (keys(%{$allroles})) {
5381: my %thesepriv;
5382: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5383: foreach my $item (split(/:/,$$allroles{$role})) {
5384: if ($item ne '') {
5385: my ($privilege,$restrictions)=split(/&/,$item);
5386: if ($restrictions eq '') {
5387: $thesepriv{$privilege}='F';
5388: } elsif ($thesepriv{$privilege} ne 'F') {
5389: $thesepriv{$privilege}.=$restrictions;
5390: }
5391: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5392: }
5393: }
5394: my $thesestr='';
5395: foreach my $priv (sort(keys(%thesepriv))) {
5396: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5397: }
5398: $userroles->{'user.priv.'.$role} = $thesestr;
5399: }
5400: return ($author,$adv);
5401: }
5402:
5403: sub role_status {
5404: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5405: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5406: my ($one,$two) = split(m{\./},$rolekey,2);
5407: (undef,undef,$$role) = split(/\./,$one,3);
5408: unless (!defined($$role) || $$role eq '') {
5409: $$where = '/'.$two;
5410: $$trolecode=$$role.'.'.$$where;
5411: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5412: $$tstatus='is';
5413: if ($$tstart && $$tstart>$update) {
5414: $$tstatus='future';
5415: if ($$tstart<$now) {
5416: if ($$tstart && $$tstart>$refresh) {
5417: if (($$where ne '') && ($$role ne '')) {
5418: my (%allroles,%allgroups,$group_privs,
5419: %groups_roles,@rolecodes);
5420: my %userroles = (
5421: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5422: );
5423: @rolecodes = ('cm');
5424: my $spec=$$role.'.'.$$where;
5425: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5426: if ($$role =~ /^cr\//) {
5427: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5428: push(@rolecodes,'cr');
5429: } elsif ($$role eq 'gr') {
5430: push(@rolecodes,$$role);
5431: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5432: $env{'user.name'});
5433: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5434: (undef,my $group_privs) = split(/\//,$trole);
5435: $group_privs = &unescape($group_privs);
5436: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5437: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5438: &get_groups_roles($tdomain,$trest,
5439: \%course_roles,\@rolecodes,
5440: \%groups_roles);
5441: } else {
5442: push(@rolecodes,$$role);
5443: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5444: }
5445: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5446: &appenv(\%userroles,\@rolecodes);
5447: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5448: }
5449: }
5450: $$tstatus = 'is';
5451: }
5452: }
5453: if ($$tend) {
5454: if ($$tend<$update) {
5455: $$tstatus='expired';
5456: } elsif ($$tend<$now) {
5457: $$tstatus='will_not';
5458: }
5459: }
5460: }
5461: }
5462: }
5463:
5464: sub get_groups_roles {
5465: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5466: return unless((ref($cdom_courseroles) eq 'HASH') &&
5467: (ref($rolecodes) eq 'ARRAY') &&
5468: (ref($groups_roles) eq 'HASH'));
5469: if (keys(%{$cdom_courseroles}) > 0) {
5470: my ($cnum) = ($rest =~ /^($match_courseid)/);
5471: if ($cdom ne '' && $cnum ne '') {
5472: foreach my $key (keys(%{$cdom_courseroles})) {
5473: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5474: my $crsrole = $1;
5475: my $crssec = $2;
5476: if ($crsrole =~ /^cr/) {
5477: unless (grep(/^cr$/,@{$rolecodes})) {
5478: push(@{$rolecodes},'cr');
5479: }
5480: } else {
5481: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5482: push(@{$rolecodes},$crsrole);
5483: }
5484: }
5485: my $rolekey = "$crsrole./$cdom/$cnum";
5486: if ($crssec ne '') {
5487: $rolekey .= "/$crssec";
5488: }
5489: $rolekey .= './';
5490: $groups_roles->{$rolekey} = $rolecodes;
5491: }
5492: }
5493: }
5494: }
5495: return;
5496: }
5497:
5498: sub delete_env_groupprivs {
5499: my ($where,$courseroles,$possroles) = @_;
5500: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5501: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5502: unless (ref($courseroles->{$udom}) eq 'HASH') {
5503: %{$courseroles->{$udom}} =
5504: &get_my_roles('','','userroles',['active'],
5505: $possroles,[$udom],1);
5506: }
5507: if (ref($courseroles->{$udom}) eq 'HASH') {
5508: foreach my $item (keys(%{$courseroles->{$udom}})) {
5509: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5510: my $area = '/'.$cdom.'/'.$cnum;
5511: my $privkey = "user.priv.$crsrole.$area";
5512: if ($crssec ne '') {
5513: $privkey .= '/'.$crssec;
5514: }
5515: $privkey .= ".$area/$group";
5516: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5517: }
5518: }
5519: return;
5520: }
5521:
5522: sub check_adhoc_privs {
5523: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5524: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5525: my $setprivs;
5526: if ($env{$cckey}) {
5527: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5528: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5529: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5530: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5531: $setprivs = 1;
5532: }
5533: } else {
5534: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5535: $setprivs = 1;
5536: }
5537: return $setprivs;
5538: }
5539:
5540: sub set_adhoc_privileges {
5541: # role can be cc or ca
5542: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5543: my $area = '/'.$dcdom.'/'.$pickedcourse;
5544: my $spec = $role.'.'.$area;
5545: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5546: $env{'user.name'},1);
5547: my %ccrole = ();
5548: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5549: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5550: &appenv(\%userroles,[$role,'cm']);
5551: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5552: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5553: &appenv( {'request.role' => $spec,
5554: 'request.role.domain' => $dcdom,
5555: 'request.course.sec' => ''
5556: }
5557: );
5558: my $tadv=0;
5559: if (&allowed('adv') eq 'F') { $tadv=1; }
5560: &appenv({'request.role.adv' => $tadv});
5561: }
5562: }
5563:
5564: # --------------------------------------------------------------- get interface
5565:
5566: sub get {
5567: my ($namespace,$storearr,$udomain,$uname)=@_;
5568: my $items='';
5569: foreach my $item (@$storearr) {
5570: $items.=&escape($item).'&';
5571: }
5572: $items=~s/\&$//;
5573: if (!$udomain) { $udomain=$env{'user.domain'}; }
5574: if (!$uname) { $uname=$env{'user.name'}; }
5575: my $uhome=&homeserver($uname,$udomain);
5576:
5577: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5578: my @pairs=split(/\&/,$rep);
5579: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5580: return @pairs;
5581: }
5582: my %returnhash=();
5583: my $i=0;
5584: foreach my $item (@$storearr) {
5585: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5586: $i++;
5587: }
5588: return %returnhash;
5589: }
5590:
5591: # --------------------------------------------------------------- del interface
5592:
5593: sub del {
5594: my ($namespace,$storearr,$udomain,$uname)=@_;
5595: my $items='';
5596: foreach my $item (@$storearr) {
5597: $items.=&escape($item).'&';
5598: }
5599:
5600: $items=~s/\&$//;
5601: if (!$udomain) { $udomain=$env{'user.domain'}; }
5602: if (!$uname) { $uname=$env{'user.name'}; }
5603: my $uhome=&homeserver($uname,$udomain);
5604: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5605: }
5606:
5607: # -------------------------------------------------------------- dump interface
5608:
5609: sub unserialize {
5610: my ($rep, $escapedkeys) = @_;
5611:
5612: return {} if $rep =~ /^error/;
5613:
5614: my %returnhash=();
5615: foreach my $item (split(/\&/,$rep)) {
5616: my ($key, $value) = split(/=/, $item, 2);
5617: $key = unescape($key) unless $escapedkeys;
5618: next if $key =~ /^error: 2 /;
5619: $returnhash{$key} = &thaw_unescape($value);
5620: }
5621: #return %returnhash;
5622: return \%returnhash;
5623: }
5624:
5625: # see Lond::dump_with_regexp
5626: # if $escapedkeys hash keys won't get unescaped.
5627: sub dump {
5628: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5629: if (!$udomain) { $udomain=$env{'user.domain'}; }
5630: if (!$uname) { $uname=$env{'user.name'}; }
5631: my $uhome=&homeserver($uname,$udomain);
5632:
5633: if ($regexp) {
5634: $regexp=&escape($regexp);
5635: } else {
5636: $regexp='.';
5637: }
5638: if (grep { $_ eq $uhome } current_machine_ids()) {
5639: # user is hosted on this machine
5640: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5641: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5642: return %{unserialize($reply, $escapedkeys)};
5643: }
5644: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5645: my @pairs=split(/\&/,$rep);
5646: my %returnhash=();
5647: if (!($rep =~ /^error/ )) {
5648: foreach my $item (@pairs) {
5649: my ($key,$value)=split(/=/,$item,2);
5650: $key = unescape($key) unless $escapedkeys;
5651: #$key = &unescape($key);
5652: next if ($key =~ /^error: 2 /);
5653: $returnhash{$key}=&thaw_unescape($value);
5654: }
5655: }
5656: return %returnhash;
5657: }
5658:
5659:
5660: # --------------------------------------------------------- dumpstore interface
5661:
5662: sub dumpstore {
5663: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5664: # same as dump but keys must be escaped. They may contain colon separated
5665: # lists of values that may themself contain colons (e.g. symbs).
5666: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5667: }
5668:
5669: # -------------------------------------------------------------- keys interface
5670:
5671: sub getkeys {
5672: my ($namespace,$udomain,$uname)=@_;
5673: if (!$udomain) { $udomain=$env{'user.domain'}; }
5674: if (!$uname) { $uname=$env{'user.name'}; }
5675: my $uhome=&homeserver($uname,$udomain);
5676: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5677: my @keyarray=();
5678: foreach my $key (split(/\&/,$rep)) {
5679: next if ($key =~ /^error: 2 /);
5680: push(@keyarray,&unescape($key));
5681: }
5682: return @keyarray;
5683: }
5684:
5685: # --------------------------------------------------------------- currentdump
5686: sub currentdump {
5687: my ($courseid,$sdom,$sname)=@_;
5688: $courseid = $env{'request.course.id'} if (! defined($courseid));
5689: $sdom = $env{'user.domain'} if (! defined($sdom));
5690: $sname = $env{'user.name'} if (! defined($sname));
5691: my $uhome = &homeserver($sname,$sdom);
5692: my $rep;
5693:
5694: if (grep { $_ eq $uhome } current_machine_ids()) {
5695: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5696: $courseid)));
5697: } else {
5698: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5699: }
5700:
5701: return if ($rep =~ /^(error:|no_such_host)/);
5702: #
5703: my %returnhash=();
5704: #
5705: if ($rep eq "unknown_cmd") {
5706: # an old lond will not know currentdump
5707: # Do a dump and make it look like a currentdump
5708: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5709: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5710: my %hash = @tmp;
5711: @tmp=();
5712: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5713: } else {
5714: my @pairs=split(/\&/,$rep);
5715: foreach my $pair (@pairs) {
5716: my ($key,$value)=split(/=/,$pair,2);
5717: my ($symb,$param) = split(/:/,$key);
5718: $returnhash{&unescape($symb)}->{&unescape($param)} =
5719: &thaw_unescape($value);
5720: }
5721: }
5722: return %returnhash;
5723: }
5724:
5725: sub convert_dump_to_currentdump{
5726: my %hash = %{shift()};
5727: my %returnhash;
5728: # Code ripped from lond, essentially. The only difference
5729: # here is the unescaping done by lonnet::dump(). Conceivably
5730: # we might run in to problems with parameter names =~ /^v\./
5731: while (my ($key,$value) = each(%hash)) {
5732: my ($v,$symb,$param) = split(/:/,$key);
5733: $symb = &unescape($symb);
5734: $param = &unescape($param);
5735: next if ($v eq 'version' || $symb eq 'keys');
5736: next if (exists($returnhash{$symb}) &&
5737: exists($returnhash{$symb}->{$param}) &&
5738: $returnhash{$symb}->{'v.'.$param} > $v);
5739: $returnhash{$symb}->{$param}=$value;
5740: $returnhash{$symb}->{'v.'.$param}=$v;
5741: }
5742: #
5743: # Remove all of the keys in the hashes which keep track of
5744: # the version of the parameter.
5745: while (my ($symb,$param_hash) = each(%returnhash)) {
5746: # use a foreach because we are going to delete from the hash.
5747: foreach my $key (keys(%$param_hash)) {
5748: delete($param_hash->{$key}) if ($key =~ /^v\./);
5749: }
5750: }
5751: return \%returnhash;
5752: }
5753:
5754: # ------------------------------------------------------ critical inc interface
5755:
5756: sub cinc {
5757: return &inc(@_,'critical');
5758: }
5759:
5760: # --------------------------------------------------------------- inc interface
5761:
5762: sub inc {
5763: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5764: if (!$udomain) { $udomain=$env{'user.domain'}; }
5765: if (!$uname) { $uname=$env{'user.name'}; }
5766: my $uhome=&homeserver($uname,$udomain);
5767: my $items='';
5768: if (! ref($store)) {
5769: # got a single value, so use that instead
5770: $items = &escape($store).'=&';
5771: } elsif (ref($store) eq 'SCALAR') {
5772: $items = &escape($$store).'=&';
5773: } elsif (ref($store) eq 'ARRAY') {
5774: $items = join('=&',map {&escape($_);} @{$store});
5775: } elsif (ref($store) eq 'HASH') {
5776: while (my($key,$value) = each(%{$store})) {
5777: $items.= &escape($key).'='.&escape($value).'&';
5778: }
5779: }
5780: $items=~s/\&$//;
5781: if ($critical) {
5782: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5783: } else {
5784: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5785: }
5786: }
5787:
5788: # --------------------------------------------------------------- put interface
5789:
5790: sub put {
5791: my ($namespace,$storehash,$udomain,$uname)=@_;
5792: if (!$udomain) { $udomain=$env{'user.domain'}; }
5793: if (!$uname) { $uname=$env{'user.name'}; }
5794: my $uhome=&homeserver($uname,$udomain);
5795: my $items='';
5796: foreach my $item (keys(%$storehash)) {
5797: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5798: }
5799: $items=~s/\&$//;
5800: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5801: }
5802:
5803: # ------------------------------------------------------------ newput interface
5804:
5805: sub newput {
5806: my ($namespace,$storehash,$udomain,$uname)=@_;
5807: if (!$udomain) { $udomain=$env{'user.domain'}; }
5808: if (!$uname) { $uname=$env{'user.name'}; }
5809: my $uhome=&homeserver($uname,$udomain);
5810: my $items='';
5811: foreach my $key (keys(%$storehash)) {
5812: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5813: }
5814: $items=~s/\&$//;
5815: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5816: }
5817:
5818: # --------------------------------------------------------- putstore interface
5819:
5820: sub putstore {
5821: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
5822: if (!$udomain) { $udomain=$env{'user.domain'}; }
5823: if (!$uname) { $uname=$env{'user.name'}; }
5824: my $uhome=&homeserver($uname,$udomain);
5825: my $items='';
5826: foreach my $key (keys(%$storehash)) {
5827: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5828: }
5829: $items=~s/\&$//;
5830: my $esc_symb=&escape($symb);
5831: my $esc_v=&escape($version);
5832: my $reply =
5833: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5834: $uhome);
5835: if (($tolog) && ($reply eq 'ok')) {
5836: my $namevalue='';
5837: foreach my $key (keys(%{$storehash})) {
5838: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5839: }
5840: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
5841: '&host='.&escape($perlvar{'lonHostID'}).
5842: '&version='.$esc_v.
5843: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
5844: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
5845: }
5846: if ($reply eq 'unknown_cmd') {
5847: # gfall back to way things use to be done
5848: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5849: $uname);
5850: }
5851: return $reply;
5852: }
5853:
5854: sub old_putstore {
5855: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5856: if (!$udomain) { $udomain=$env{'user.domain'}; }
5857: if (!$uname) { $uname=$env{'user.name'}; }
5858: my $uhome=&homeserver($uname,$udomain);
5859: my %newstorehash;
5860: foreach my $item (keys(%$storehash)) {
5861: my $key = $version.':'.&escape($symb).':'.$item;
5862: $newstorehash{$key} = $storehash->{$item};
5863: }
5864: my $items='';
5865: my %allitems = ();
5866: foreach my $item (keys(%newstorehash)) {
5867: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5868: my $key = $1.':keys:'.$2;
5869: $allitems{$key} .= $3.':';
5870: }
5871: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5872: }
5873: foreach my $item (keys(%allitems)) {
5874: $allitems{$item} =~ s/\:$//;
5875: $items.= $item.'='.$allitems{$item}.'&';
5876: }
5877: $items=~s/\&$//;
5878: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5879: }
5880:
5881: # ------------------------------------------------------ critical put interface
5882:
5883: sub cput {
5884: my ($namespace,$storehash,$udomain,$uname)=@_;
5885: if (!$udomain) { $udomain=$env{'user.domain'}; }
5886: if (!$uname) { $uname=$env{'user.name'}; }
5887: my $uhome=&homeserver($uname,$udomain);
5888: my $items='';
5889: foreach my $item (keys(%$storehash)) {
5890: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5891: }
5892: $items=~s/\&$//;
5893: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5894: }
5895:
5896: # -------------------------------------------------------------- eget interface
5897:
5898: sub eget {
5899: my ($namespace,$storearr,$udomain,$uname)=@_;
5900: my $items='';
5901: foreach my $item (@$storearr) {
5902: $items.=&escape($item).'&';
5903: }
5904: $items=~s/\&$//;
5905: if (!$udomain) { $udomain=$env{'user.domain'}; }
5906: if (!$uname) { $uname=$env{'user.name'}; }
5907: my $uhome=&homeserver($uname,$udomain);
5908: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5909: my @pairs=split(/\&/,$rep);
5910: my %returnhash=();
5911: my $i=0;
5912: foreach my $item (@$storearr) {
5913: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5914: $i++;
5915: }
5916: return %returnhash;
5917: }
5918:
5919: # ------------------------------------------------------------ tmpput interface
5920: sub tmpput {
5921: my ($storehash,$server,$context)=@_;
5922: my $items='';
5923: foreach my $item (keys(%$storehash)) {
5924: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5925: }
5926: $items=~s/\&$//;
5927: if (defined($context)) {
5928: $items .= ':'.&escape($context);
5929: }
5930: return &reply("tmpput:$items",$server);
5931: }
5932:
5933: # ------------------------------------------------------------ tmpget interface
5934: sub tmpget {
5935: my ($token,$server)=@_;
5936: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5937: my $rep=&reply("tmpget:$token",$server);
5938: my %returnhash;
5939: foreach my $item (split(/\&/,$rep)) {
5940: my ($key,$value)=split(/=/,$item);
5941: next if ($key =~ /^error: 2 /);
5942: $returnhash{&unescape($key)}=&thaw_unescape($value);
5943: }
5944: return %returnhash;
5945: }
5946:
5947: # ------------------------------------------------------------ tmpdel interface
5948: sub tmpdel {
5949: my ($token,$server)=@_;
5950: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5951: return &reply("tmpdel:$token",$server);
5952: }
5953:
5954: # ------------------------------------------------------------ get_timebased_id
5955:
5956: sub get_timebased_id {
5957: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5958: $maxtries) = @_;
5959: my ($newid,$error,$dellock);
5960: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5961: return ('','ok','invalid call to get suffix');
5962: }
5963:
5964: # set defaults for any optional args for which values were not supplied
5965: if ($who eq '') {
5966: $who = $env{'user.name'}.':'.$env{'user.domain'};
5967: }
5968: if (!$locktries) {
5969: $locktries = 3;
5970: }
5971: if (!$maxtries) {
5972: $maxtries = 10;
5973: }
5974:
5975: if (($cdom eq '') || ($cnum eq '')) {
5976: if ($env{'request.course.id'}) {
5977: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5978: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5979: }
5980: if (($cdom eq '') || ($cnum eq '')) {
5981: return ('','ok','call to get suffix not in course context');
5982: }
5983: }
5984:
5985: # construct locking item
5986: my $lockhash = {
5987: $prefix."\0".'locked_'.$keyid => $who,
5988: };
5989: my $tries = 0;
5990:
5991: # attempt to get lock on nohist_$namespace file
5992: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5993: while (($gotlock ne 'ok') && $tries <$locktries) {
5994: $tries ++;
5995: sleep 1;
5996: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5997: }
5998:
5999: # attempt to get unique identifier, based on current timestamp
6000: if ($gotlock eq 'ok') {
6001: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6002: my $id = time;
6003: $newid = $id;
6004: if ($idtype eq 'addcode') {
6005: $newid .= &sixnum_code();
6006: }
6007: my $idtries = 0;
6008: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6009: if ($idtype eq 'concat') {
6010: $newid = $id.$idtries;
6011: } elsif ($idtype eq 'addcode') {
6012: $newid = $newid.&sixnum_code();
6013: } else {
6014: $newid ++;
6015: }
6016: $idtries ++;
6017: }
6018: if (!exists($inuse{$prefix."\0".$newid})) {
6019: my %new_item = (
6020: $prefix."\0".$newid => $who,
6021: );
6022: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6023: $cdom,$cnum);
6024: if ($putresult ne 'ok') {
6025: undef($newid);
6026: $error = 'error saving new item: '.$putresult;
6027: }
6028: } else {
6029: undef($newid);
6030: $error = ('error: no unique suffix available for the new item ');
6031: }
6032: # remove lock
6033: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6034: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6035: } else {
6036: $error = "error: could not obtain lockfile\n";
6037: $dellock = 'ok';
6038: }
6039: return ($newid,$dellock,$error);
6040: }
6041:
6042: sub sixnum_code {
6043: my $code;
6044: for (0..6) {
6045: $code .= int( rand(9) );
6046: }
6047: return $code;
6048: }
6049:
6050: # -------------------------------------------------- portfolio access checking
6051:
6052: sub portfolio_access {
6053: my ($requrl) = @_;
6054: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6055: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
6056: if ($result) {
6057: my %setters;
6058: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6059: my ($startblock,$endblock) =
6060: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6061: if ($startblock && $endblock) {
6062: return 'B';
6063: }
6064: } else {
6065: my ($startblock,$endblock) =
6066: &Apache::loncommon::blockcheck(\%setters,'port');
6067: if ($startblock && $endblock) {
6068: return 'B';
6069: }
6070: }
6071: }
6072: if ($result eq 'ok') {
6073: return 'F';
6074: } elsif ($result =~ /^[^:]+:guest_/) {
6075: return 'A';
6076: }
6077: return '';
6078: }
6079:
6080: sub get_portfolio_access {
6081: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
6082:
6083: if (!ref($access_hash)) {
6084: my $current_perms = &get_portfile_permissions($udom,$unum);
6085: my %access_controls = &get_access_controls($current_perms,$group,
6086: $file_name);
6087: $access_hash = $access_controls{$file_name};
6088: }
6089:
6090: my ($public,$guest,@domains,@users,@courses,@groups);
6091: my $now = time;
6092: if (ref($access_hash) eq 'HASH') {
6093: foreach my $key (keys(%{$access_hash})) {
6094: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6095: if ($start > $now) {
6096: next;
6097: }
6098: if ($end && $end<$now) {
6099: next;
6100: }
6101: if ($scope eq 'public') {
6102: $public = $key;
6103: last;
6104: } elsif ($scope eq 'guest') {
6105: $guest = $key;
6106: } elsif ($scope eq 'domains') {
6107: push(@domains,$key);
6108: } elsif ($scope eq 'users') {
6109: push(@users,$key);
6110: } elsif ($scope eq 'course') {
6111: push(@courses,$key);
6112: } elsif ($scope eq 'group') {
6113: push(@groups,$key);
6114: }
6115: }
6116: if ($public) {
6117: return 'ok';
6118: }
6119: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6120: if ($guest) {
6121: return $guest;
6122: }
6123: } else {
6124: if (@domains > 0) {
6125: foreach my $domkey (@domains) {
6126: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6127: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6128: return 'ok';
6129: }
6130: }
6131: }
6132: }
6133: if (@users > 0) {
6134: foreach my $userkey (@users) {
6135: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6136: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6137: if (ref($item) eq 'HASH') {
6138: if (($item->{'uname'} eq $env{'user.name'}) &&
6139: ($item->{'udom'} eq $env{'user.domain'})) {
6140: return 'ok';
6141: }
6142: }
6143: }
6144: }
6145: }
6146: }
6147: my %roleshash;
6148: my @courses_and_groups = @courses;
6149: push(@courses_and_groups,@groups);
6150: if (@courses_and_groups > 0) {
6151: my (%allgroups,%allroles);
6152: my ($start,$end,$role,$sec,$group);
6153: foreach my $envkey (%env) {
6154: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6155: my $cid = $2.'_'.$3;
6156: if ($1 eq 'gr') {
6157: $group = $4;
6158: $allgroups{$cid}{$group} = $env{$envkey};
6159: } else {
6160: if ($4 eq '') {
6161: $sec = 'none';
6162: } else {
6163: $sec = $4;
6164: }
6165: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6166: }
6167: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6168: my $cid = $2.'_'.$3;
6169: if ($4 eq '') {
6170: $sec = 'none';
6171: } else {
6172: $sec = $4;
6173: }
6174: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6175: }
6176: }
6177: if (keys(%allroles) == 0) {
6178: return;
6179: }
6180: foreach my $key (@courses_and_groups) {
6181: my %content = %{$$access_hash{$key}};
6182: my $cnum = $content{'number'};
6183: my $cdom = $content{'domain'};
6184: my $cid = $cdom.'_'.$cnum;
6185: if (!exists($allroles{$cid})) {
6186: next;
6187: }
6188: foreach my $role_id (keys(%{$content{'roles'}})) {
6189: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6190: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6191: my @status = @{$content{'roles'}{$role_id}{'access'}};
6192: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6193: foreach my $role (keys(%{$allroles{$cid}})) {
6194: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6195: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6196: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6197: if (grep/^all$/,@sections) {
6198: return 'ok';
6199: } else {
6200: if (grep/^$sec$/,@sections) {
6201: return 'ok';
6202: }
6203: }
6204: }
6205: }
6206: if (keys(%{$allgroups{$cid}}) == 0) {
6207: if (grep/^none$/,@groups) {
6208: return 'ok';
6209: }
6210: } else {
6211: if (grep/^all$/,@groups) {
6212: return 'ok';
6213: }
6214: foreach my $group (keys(%{$allgroups{$cid}})) {
6215: if (grep/^$group$/,@groups) {
6216: return 'ok';
6217: }
6218: }
6219: }
6220: }
6221: }
6222: }
6223: }
6224: }
6225: if ($guest) {
6226: return $guest;
6227: }
6228: }
6229: }
6230: return;
6231: }
6232:
6233: sub course_group_datechecker {
6234: my ($dates,$now,$status) = @_;
6235: my ($start,$end) = split(/\./,$dates);
6236: if (!$start && !$end) {
6237: return 'ok';
6238: }
6239: if (grep/^active$/,@{$status}) {
6240: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6241: return 'ok';
6242: }
6243: }
6244: if (grep/^previous$/,@{$status}) {
6245: if ($end > $now ) {
6246: return 'ok';
6247: }
6248: }
6249: if (grep/^future$/,@{$status}) {
6250: if ($start > $now) {
6251: return 'ok';
6252: }
6253: }
6254: return;
6255: }
6256:
6257: sub parse_portfolio_url {
6258: my ($url) = @_;
6259:
6260: my ($type,$udom,$unum,$group,$file_name);
6261:
6262: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6263: $type = 1;
6264: $udom = $1;
6265: $unum = $2;
6266: $file_name = $3;
6267: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6268: $type = 2;
6269: $udom = $1;
6270: $unum = $2;
6271: $group = $3;
6272: $file_name = $3.'/'.$4;
6273: }
6274: if (wantarray) {
6275: return ($type,$udom,$unum,$file_name,$group);
6276: }
6277: return $type;
6278: }
6279:
6280: sub is_portfolio_url {
6281: my ($url) = @_;
6282: return scalar(&parse_portfolio_url($url));
6283: }
6284:
6285: sub is_portfolio_file {
6286: my ($file) = @_;
6287: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6288: return 1;
6289: }
6290: return;
6291: }
6292:
6293: sub usertools_access {
6294: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6295: my ($access,%tools);
6296: if ($context eq '') {
6297: $context = 'tools';
6298: }
6299: if ($context eq 'requestcourses') {
6300: %tools = (
6301: official => 1,
6302: unofficial => 1,
6303: community => 1,
6304: textbook => 1,
6305: );
6306: } elsif ($context eq 'requestauthor') {
6307: %tools = (
6308: requestauthor => 1,
6309: );
6310: } else {
6311: %tools = (
6312: aboutme => 1,
6313: blog => 1,
6314: webdav => 1,
6315: portfolio => 1,
6316: );
6317: }
6318: return if (!defined($tools{$tool}));
6319:
6320: if (($udom eq '') || ($uname eq '')) {
6321: $udom = $env{'user.domain'};
6322: $uname = $env{'user.name'};
6323: }
6324:
6325: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6326: if ($action ne 'reload') {
6327: if ($context eq 'requestcourses') {
6328: return $env{'environment.canrequest.'.$tool};
6329: } elsif ($context eq 'requestauthor') {
6330: return $env{'environment.canrequest.author'};
6331: } else {
6332: return $env{'environment.availabletools.'.$tool};
6333: }
6334: }
6335: }
6336:
6337: my ($toolstatus,$inststatus,$envkey);
6338: if ($context eq 'requestauthor') {
6339: $envkey = $context;
6340: } else {
6341: $envkey = $context.'.'.$tool;
6342: }
6343:
6344: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6345: ($action ne 'reload')) {
6346: $toolstatus = $env{'environment.'.$envkey};
6347: $inststatus = $env{'environment.inststatus'};
6348: } else {
6349: if (ref($userenvref) eq 'HASH') {
6350: $toolstatus = $userenvref->{$envkey};
6351: $inststatus = $userenvref->{'inststatus'};
6352: } else {
6353: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6354: $toolstatus = $userenv{$envkey};
6355: $inststatus = $userenv{'inststatus'};
6356: }
6357: }
6358:
6359: if ($toolstatus ne '') {
6360: if ($toolstatus) {
6361: $access = 1;
6362: } else {
6363: $access = 0;
6364: }
6365: return $access;
6366: }
6367:
6368: my ($is_adv,%domdef);
6369: if (ref($is_advref) eq 'HASH') {
6370: $is_adv = $is_advref->{'is_adv'};
6371: } else {
6372: $is_adv = &is_advanced_user($udom,$uname);
6373: }
6374: if (ref($domdefref) eq 'HASH') {
6375: %domdef = %{$domdefref};
6376: } else {
6377: %domdef = &get_domain_defaults($udom);
6378: }
6379: if (ref($domdef{$tool}) eq 'HASH') {
6380: if ($is_adv) {
6381: if ($domdef{$tool}{'_LC_adv'} ne '') {
6382: if ($domdef{$tool}{'_LC_adv'}) {
6383: $access = 1;
6384: } else {
6385: $access = 0;
6386: }
6387: return $access;
6388: }
6389: }
6390: if ($inststatus ne '') {
6391: my ($hasaccess,$hasnoaccess);
6392: foreach my $affiliation (split(/:/,$inststatus)) {
6393: if ($domdef{$tool}{$affiliation} ne '') {
6394: if ($domdef{$tool}{$affiliation}) {
6395: $hasaccess = 1;
6396: } else {
6397: $hasnoaccess = 1;
6398: }
6399: }
6400: }
6401: if ($hasaccess || $hasnoaccess) {
6402: if ($hasaccess) {
6403: $access = 1;
6404: } elsif ($hasnoaccess) {
6405: $access = 0;
6406: }
6407: return $access;
6408: }
6409: } else {
6410: if ($domdef{$tool}{'default'} ne '') {
6411: if ($domdef{$tool}{'default'}) {
6412: $access = 1;
6413: } elsif ($domdef{$tool}{'default'} == 0) {
6414: $access = 0;
6415: }
6416: return $access;
6417: }
6418: }
6419: } else {
6420: if (($context eq 'tools') && ($tool ne 'webdav')) {
6421: $access = 1;
6422: } else {
6423: $access = 0;
6424: }
6425: return $access;
6426: }
6427: }
6428:
6429: sub is_course_owner {
6430: my ($cdom,$cnum,$udom,$uname) = @_;
6431: if (($udom eq '') || ($uname eq '')) {
6432: $udom = $env{'user.domain'};
6433: $uname = $env{'user.name'};
6434: }
6435: unless (($udom eq '') || ($uname eq '')) {
6436: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6437: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6438: return 1;
6439: } else {
6440: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6441: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6442: return 1;
6443: }
6444: }
6445: }
6446: }
6447: return;
6448: }
6449:
6450: sub is_advanced_user {
6451: my ($udom,$uname) = @_;
6452: if ($udom ne '' && $uname ne '') {
6453: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6454: if (wantarray) {
6455: return ($env{'user.adv'},$env{'user.author'});
6456: } else {
6457: return $env{'user.adv'};
6458: }
6459: }
6460: }
6461: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6462: my %allroles;
6463: my ($is_adv,$is_author);
6464: foreach my $role (keys(%roleshash)) {
6465: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6466: my $area = '/'.$tdomain.'/'.$trest;
6467: if ($sec ne '') {
6468: $area .= '/'.$sec;
6469: }
6470: if (($area ne '') && ($trole ne '')) {
6471: my $spec=$trole.'.'.$area;
6472: if ($trole =~ /^cr\//) {
6473: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6474: } elsif ($trole ne 'gr') {
6475: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6476: }
6477: if ($trole eq 'au') {
6478: $is_author = 1;
6479: }
6480: }
6481: }
6482: foreach my $role (keys(%allroles)) {
6483: last if ($is_adv);
6484: foreach my $item (split(/:/,$allroles{$role})) {
6485: if ($item ne '') {
6486: my ($privilege,$restrictions)=split(/&/,$item);
6487: if ($privilege eq 'adv') {
6488: $is_adv = 1;
6489: last;
6490: }
6491: }
6492: }
6493: }
6494: if (wantarray) {
6495: return ($is_adv,$is_author);
6496: }
6497: return $is_adv;
6498: }
6499:
6500: sub check_can_request {
6501: my ($dom,$can_request,$request_domains) = @_;
6502: my $canreq = 0;
6503: my ($types,$typename) = &Apache::loncommon::course_types();
6504: my @options = ('approval','validate','autolimit');
6505: my $optregex = join('|',@options);
6506: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6507: foreach my $type (@{$types}) {
6508: if (&usertools_access($env{'user.name'},
6509: $env{'user.domain'},
6510: $type,undef,'requestcourses')) {
6511: $canreq ++;
6512: if (ref($request_domains) eq 'HASH') {
6513: push(@{$request_domains->{$type}},$env{'user.domain'});
6514: }
6515: if ($dom eq $env{'user.domain'}) {
6516: $can_request->{$type} = 1;
6517: }
6518: }
6519: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6520: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6521: if (@curr > 0) {
6522: foreach my $item (@curr) {
6523: if (ref($request_domains) eq 'HASH') {
6524: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6525: if ($otherdom ne '') {
6526: if (ref($request_domains->{$type}) eq 'ARRAY') {
6527: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6528: push(@{$request_domains->{$type}},$otherdom);
6529: }
6530: } else {
6531: push(@{$request_domains->{$type}},$otherdom);
6532: }
6533: }
6534: }
6535: }
6536: unless($dom eq $env{'user.domain'}) {
6537: $canreq ++;
6538: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6539: $can_request->{$type} = 1;
6540: }
6541: }
6542: }
6543: }
6544: }
6545: }
6546: return $canreq;
6547: }
6548:
6549: # ---------------------------------------------- Custom access rule evaluation
6550:
6551: sub customaccess {
6552: my ($priv,$uri)=@_;
6553: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6554: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6555: $udom = &LONCAPA::clean_domain($udom);
6556: $ucrs = &LONCAPA::clean_username($ucrs);
6557: my $access=0;
6558: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6559: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6560: if ($type eq 'user') {
6561: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6562: my ($tdom,$tuname)=split(m{/},$scope);
6563: if ($tdom) {
6564: if ($tdom ne $env{'user.domain'}) { next; }
6565: }
6566: if ($tuname) {
6567: if ($tuname ne $env{'user.name'}) { next; }
6568: }
6569: $access=($effect eq 'allow');
6570: last;
6571: }
6572: } else {
6573: if ($role) {
6574: if ($role ne $urole) { next; }
6575: }
6576: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6577: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6578: if ($tdom) {
6579: if ($tdom ne $udom) { next; }
6580: }
6581: if ($tcrs) {
6582: if ($tcrs ne $ucrs) { next; }
6583: }
6584: if ($tsec) {
6585: if ($tsec ne $usec) { next; }
6586: }
6587: $access=($effect eq 'allow');
6588: last;
6589: }
6590: if ($realm eq '' && $role eq '') {
6591: $access=($effect eq 'allow');
6592: }
6593: }
6594: }
6595: return $access;
6596: }
6597:
6598: # ------------------------------------------------- Check for a user privilege
6599:
6600: sub allowed {
6601: my ($priv,$uri,$symb,$role)=@_;
6602: my $ver_orguri=$uri;
6603: $uri=&deversion($uri);
6604: my $orguri=$uri;
6605: $uri=&declutter($uri);
6606:
6607: if ($priv eq 'evb') {
6608: # Evade communication block restrictions for specified role in a course
6609: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6610: return $1;
6611: } else {
6612: return;
6613: }
6614: }
6615:
6616: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6617: # Free bre access to adm and meta resources
6618: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6619: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6620: && ($priv eq 'bre')) {
6621: return 'F';
6622: }
6623:
6624: # Free bre access to user's own portfolio contents
6625: my ($space,$domain,$name,@dir)=split('/',$uri);
6626: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6627: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6628: my %setters;
6629: my ($startblock,$endblock) =
6630: &Apache::loncommon::blockcheck(\%setters,'port');
6631: if ($startblock && $endblock) {
6632: return 'B';
6633: } else {
6634: return 'F';
6635: }
6636: }
6637:
6638: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6639: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6640: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6641: if (exists($env{'request.course.id'})) {
6642: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6643: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6644: if (($domain eq $cdom) && ($name eq $cnum)) {
6645: my $courseprivid=$env{'request.course.id'};
6646: $courseprivid=~s/\_/\//;
6647: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6648: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6649: return $1;
6650: } else {
6651: if ($env{'request.course.sec'}) {
6652: $courseprivid.='/'.$env{'request.course.sec'};
6653: }
6654: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6655: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6656: return $2;
6657: }
6658: }
6659: }
6660: }
6661: }
6662:
6663: # Free bre to public access
6664:
6665: if ($priv eq 'bre') {
6666: my $copyright=&metadata($uri,'copyright');
6667: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6668: return 'F';
6669: }
6670: if ($copyright eq 'priv') {
6671: $uri=~/([^\/]+)\/([^\/]+)\//;
6672: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6673: return '';
6674: }
6675: }
6676: if ($copyright eq 'domain') {
6677: $uri=~/([^\/]+)\/([^\/]+)\//;
6678: unless (($env{'user.domain'} eq $1) ||
6679: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6680: return '';
6681: }
6682: }
6683: if ($env{'request.role'}=~ /li\.\//) {
6684: # Library role, so allow browsing of resources in this domain.
6685: return 'F';
6686: }
6687: if ($copyright eq 'custom') {
6688: unless (&customaccess($priv,$uri)) { return ''; }
6689: }
6690: }
6691: # Domain coordinator is trying to create a course
6692: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6693: # uri is the requested domain in this case.
6694: # comparison to 'request.role.domain' shows if the user has selected
6695: # a role of dc for the domain in question.
6696: return 'F' if ($uri eq $env{'request.role.domain'});
6697: }
6698:
6699: my $thisallowed='';
6700: my $statecond=0;
6701: my $courseprivid='';
6702:
6703: my $ownaccess;
6704: # Community Coordinator or Assistant Co-author browsing resource space.
6705: if (($priv eq 'bro') && ($env{'user.author'})) {
6706: if ($uri eq '') {
6707: $ownaccess = 1;
6708: } else {
6709: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6710: my $udom = $env{'user.domain'};
6711: my $uname = $env{'user.name'};
6712: if ($uri =~ m{^\Q$udom\E/?$}) {
6713: $ownaccess = 1;
6714: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6715: unless ($uri =~ m{\.\./}) {
6716: $ownaccess = 1;
6717: }
6718: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6719: my $now = time;
6720: if ($uri =~ m{^([^/]+)/?$}) {
6721: my $adom = $1;
6722: foreach my $key (keys(%env)) {
6723: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6724: my ($start,$end) = split('.',$env{$key});
6725: if (($now >= $start) && (!$end || $end < $now)) {
6726: $ownaccess = 1;
6727: last;
6728: }
6729: }
6730: }
6731: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6732: my $adom = $1;
6733: my $aname = $2;
6734: foreach my $role ('ca','aa') {
6735: if ($env{"user.role.$role./$adom/$aname"}) {
6736: my ($start,$end) =
6737: split('.',$env{"user.role.$role./$adom/$aname"});
6738: if (($now >= $start) && (!$end || $end < $now)) {
6739: $ownaccess = 1;
6740: last;
6741: }
6742: }
6743: }
6744: }
6745: }
6746: }
6747: }
6748: }
6749:
6750: # Course
6751:
6752: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6753: unless (($priv eq 'bro') && (!$ownaccess)) {
6754: $thisallowed.=$1;
6755: }
6756: }
6757:
6758: # Domain
6759:
6760: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6761: =~/\Q$priv\E\&([^\:]*)/) {
6762: unless (($priv eq 'bro') && (!$ownaccess)) {
6763: $thisallowed.=$1;
6764: }
6765: }
6766:
6767: # User who is not author or co-author might still be able to edit
6768: # resource of an author in the domain (e.g., if Domain Coordinator).
6769: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6770: (&allowed('mdc',$env{'request.course.id'}))) {
6771: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6772: $thisallowed.=$1;
6773: }
6774: }
6775:
6776: # Course: uri itself is a course
6777: my $courseuri=$uri;
6778: $courseuri=~s/\_(\d)/\/$1/;
6779: $courseuri=~s/^([^\/])/\/$1/;
6780:
6781: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6782: =~/\Q$priv\E\&([^\:]*)/) {
6783: unless (($priv eq 'bro') && (!$ownaccess)) {
6784: $thisallowed.=$1;
6785: }
6786: }
6787:
6788: # URI is an uploaded document for this course, default permissions don't matter
6789: # not allowing 'edit' access (editupload) to uploaded course docs
6790: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6791: $thisallowed='';
6792: my ($match)=&is_on_map($uri);
6793: if ($match) {
6794: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6795: =~/\Q$priv\E\&([^\:]*)/) {
6796: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6797: if (@blockers > 0) {
6798: $thisallowed = 'B';
6799: } else {
6800: $thisallowed.=$1;
6801: }
6802: }
6803: } else {
6804: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6805: if ($refuri) {
6806: if ($refuri =~ m|^/adm/|) {
6807: $thisallowed='F';
6808: } else {
6809: $refuri=&declutter($refuri);
6810: my ($match) = &is_on_map($refuri);
6811: if ($match) {
6812: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6813: if (@blockers > 0) {
6814: $thisallowed = 'B';
6815: } else {
6816: $thisallowed='F';
6817: }
6818: }
6819: }
6820: }
6821: }
6822: }
6823:
6824: if ($priv eq 'bre'
6825: && $thisallowed ne 'F'
6826: && $thisallowed ne '2'
6827: && &is_portfolio_url($uri)) {
6828: $thisallowed = &portfolio_access($uri);
6829: }
6830:
6831: # Full access at system, domain or course-wide level? Exit.
6832: if ($thisallowed=~/F/) {
6833: return 'F';
6834: }
6835:
6836: # If this is generating or modifying users, exit with special codes
6837:
6838: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6839: if (($priv eq 'cca') || ($priv eq 'caa')) {
6840: my ($audom,$auname)=split('/',$uri);
6841: # no author name given, so this just checks on the general right to make a co-author in this domain
6842: unless ($auname) { return $thisallowed; }
6843: # an author name is given, so we are about to actually make a co-author for a certain account
6844: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6845: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6846: ($audom ne $env{'request.role.domain'}))) { return ''; }
6847: }
6848: return $thisallowed;
6849: }
6850: #
6851: # Gathered so far: system, domain and course wide privileges
6852: #
6853: # Course: See if uri or referer is an individual resource that is part of
6854: # the course
6855:
6856: if ($env{'request.course.id'}) {
6857:
6858: $courseprivid=$env{'request.course.id'};
6859: if ($env{'request.course.sec'}) {
6860: $courseprivid.='/'.$env{'request.course.sec'};
6861: }
6862: $courseprivid=~s/\_/\//;
6863: my $checkreferer=1;
6864: my ($match,$cond)=&is_on_map($uri);
6865: if ($match) {
6866: $statecond=$cond;
6867: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6868: =~/\Q$priv\E\&([^\:]*)/) {
6869: my $value = $1;
6870: if ($priv eq 'bre') {
6871: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6872: if (@blockers > 0) {
6873: $thisallowed = 'B';
6874: } else {
6875: $thisallowed.=$value;
6876: }
6877: } else {
6878: $thisallowed.=$value;
6879: }
6880: $checkreferer=0;
6881: }
6882: }
6883:
6884: if ($checkreferer) {
6885: my $refuri=$env{'httpref.'.$orguri};
6886: unless ($refuri) {
6887: foreach my $key (keys(%env)) {
6888: if ($key=~/^httpref\..*\*/) {
6889: my $pattern=$key;
6890: $pattern=~s/^httpref\.\/res\///;
6891: $pattern=~s/\*/\[\^\/\]\+/g;
6892: $pattern=~s/\//\\\//g;
6893: if ($orguri=~/$pattern/) {
6894: $refuri=$env{$key};
6895: }
6896: }
6897: }
6898: }
6899:
6900: if ($refuri) {
6901: $refuri=&declutter($refuri);
6902: my ($match,$cond)=&is_on_map($refuri);
6903: if ($match) {
6904: my $refstatecond=$cond;
6905: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6906: =~/\Q$priv\E\&([^\:]*)/) {
6907: my $value = $1;
6908: if ($priv eq 'bre') {
6909: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6910: if (@blockers > 0) {
6911: $thisallowed = 'B';
6912: } else {
6913: $thisallowed.=$value;
6914: }
6915: } else {
6916: $thisallowed.=$value;
6917: }
6918: $uri=$refuri;
6919: $statecond=$refstatecond;
6920: }
6921: }
6922: }
6923: }
6924: }
6925:
6926: #
6927: # Gathered now: all privileges that could apply, and condition number
6928: #
6929: #
6930: # Full or no access?
6931: #
6932:
6933: if ($thisallowed=~/F/) {
6934: return 'F';
6935: }
6936:
6937: unless ($thisallowed) {
6938: return '';
6939: }
6940:
6941: # Restrictions exist, deal with them
6942: #
6943: # C:according to course preferences
6944: # R:according to resource settings
6945: # L:unless locked
6946: # X:according to user session state
6947: #
6948:
6949: # Possibly locked functionality, check all courses
6950: # Locks might take effect only after 10 minutes cache expiration for other
6951: # courses, and 2 minutes for current course
6952:
6953: my $envkey;
6954: if ($thisallowed=~/L/) {
6955: foreach $envkey (keys(%env)) {
6956: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6957: my $courseid=$2;
6958: my $roleid=$1.'.'.$2;
6959: $courseid=~s/^\///;
6960: my $expiretime=600;
6961: if ($env{'request.role'} eq $roleid) {
6962: $expiretime=120;
6963: }
6964: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6965: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6966: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6967: &coursedescription($courseid,{'freshen_cache' => 1});
6968: }
6969: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6970: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6971: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6972: &log($env{'user.domain'},$env{'user.name'},
6973: $env{'user.home'},
6974: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6975: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6976: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6977: return '';
6978: }
6979: }
6980: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6981: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6982: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6983: &log($env{'user.domain'},$env{'user.name'},
6984: $env{'user.home'},
6985: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6986: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6987: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6988: return '';
6989: }
6990: }
6991: }
6992: }
6993: }
6994:
6995: #
6996: # Rest of the restrictions depend on selected course
6997: #
6998:
6999: unless ($env{'request.course.id'}) {
7000: if ($thisallowed eq 'A') {
7001: return 'A';
7002: } elsif ($thisallowed eq 'B') {
7003: return 'B';
7004: } else {
7005: return '1';
7006: }
7007: }
7008:
7009: #
7010: # Now user is definitely in a course
7011: #
7012:
7013:
7014: # Course preferences
7015:
7016: if ($thisallowed=~/C/) {
7017: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7018: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7019: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7020: =~/\Q$rolecode\E/) {
7021: if (($priv ne 'pch') && ($priv ne 'plc')) {
7022: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7023: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7024: $env{'request.course.id'});
7025: }
7026: return '';
7027: }
7028:
7029: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7030: =~/\Q$unamedom\E/) {
7031: if (($priv ne 'pch') && ($priv ne 'plc')) {
7032: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7033: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7034: $env{'request.course.id'});
7035: }
7036: return '';
7037: }
7038: }
7039:
7040: # Resource preferences
7041:
7042: if ($thisallowed=~/R/) {
7043: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7044: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7045: if (($priv ne 'pch') && ($priv ne 'plc')) {
7046: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7047: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7048: }
7049: return '';
7050: }
7051: }
7052:
7053: # Restricted by state or randomout?
7054:
7055: if ($thisallowed=~/X/) {
7056: if ($env{'acc.randomout'}) {
7057: if (!$symb) { $symb=&symbread($uri,1); }
7058: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7059: return '';
7060: }
7061: }
7062: if (&condval($statecond)) {
7063: return '2';
7064: } else {
7065: return '';
7066: }
7067: }
7068:
7069: if ($thisallowed eq 'A') {
7070: return 'A';
7071: } elsif ($thisallowed eq 'B') {
7072: return 'B';
7073: }
7074: return 'F';
7075: }
7076:
7077: # ------------------------------------------- Check construction space access
7078:
7079: sub constructaccess {
7080: my ($url,$setpriv)=@_;
7081:
7082: # We do not allow editing of previous versions of files
7083: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7084:
7085: # Get username and domain from URL
7086: my ($ownername,$ownerdomain,$ownerhome);
7087:
7088: ($ownerdomain,$ownername) =
7089: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
7090:
7091: # The URL does not really point to any authorspace, forget it
7092: unless (($ownername) && ($ownerdomain)) { return ''; }
7093:
7094: # Now we need to see if the user has access to the authorspace of
7095: # $ownername at $ownerdomain
7096:
7097: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7098: # Real author for this?
7099: $ownerhome = $env{'user.home'};
7100: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7101: return ($ownername,$ownerdomain,$ownerhome);
7102: }
7103: } else {
7104: # Co-author for this?
7105: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7106: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7107: $ownerhome = &homeserver($ownername,$ownerdomain);
7108: return ($ownername,$ownerdomain,$ownerhome);
7109: }
7110: }
7111:
7112: # We don't have any access right now. If we are not possibly going to do anything about this,
7113: # we might as well leave
7114: unless ($setpriv) { return ''; }
7115:
7116: # Backdoor access?
7117: my $allowed=&allowed('eco',$ownerdomain);
7118: # Nope
7119: unless ($allowed) { return ''; }
7120: # Looks like we may have access, but could be locked by the owner of the construction space
7121: if ($allowed eq 'U') {
7122: my %blocked=&get('environment',['domcoord.author'],
7123: $ownerdomain,$ownername);
7124: # Is blocked by owner
7125: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7126: }
7127: if (($allowed eq 'F') || ($allowed eq 'U')) {
7128: # Grant temporary access
7129: my $then=$env{'user.login.time'};
7130: my $update=$env{'user.update.time'};
7131: if (!$update) { $update = $then; }
7132: my $refresh=$env{'user.refresh.time'};
7133: if (!$refresh) { $refresh = $update; }
7134: my $now = time;
7135: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7136: $now,'ca','constructaccess');
7137: $ownerhome = &homeserver($ownername,$ownerdomain);
7138: return($ownername,$ownerdomain,$ownerhome);
7139: }
7140: # No business here
7141: return '';
7142: }
7143:
7144: sub get_comm_blocks {
7145: my ($cdom,$cnum) = @_;
7146: if ($cdom eq '' || $cnum eq '') {
7147: return unless ($env{'request.course.id'});
7148: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7149: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7150: }
7151: my %commblocks;
7152: my $hashid=$cdom.'_'.$cnum;
7153: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7154: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7155: %commblocks = %{$blocksref};
7156: } else {
7157: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7158: my $cachetime = 600;
7159: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7160: }
7161: return %commblocks;
7162: }
7163:
7164: sub has_comm_blocking {
7165: my ($priv,$symb,$uri,$blocks) = @_;
7166: return unless ($env{'request.course.id'});
7167: return unless ($priv eq 'bre');
7168: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7169: my %commblocks;
7170: if (ref($blocks) eq 'HASH') {
7171: %commblocks = %{$blocks};
7172: } else {
7173: %commblocks = &get_comm_blocks();
7174: }
7175: return unless (keys(%commblocks) > 0);
7176: if (!$symb) { $symb=&symbread($uri,1); }
7177: my ($map,$resid,undef)=&decode_symb($symb);
7178: my %tocheck = (
7179: maps => $map,
7180: resources => $symb,
7181: );
7182: my @blockers;
7183: my $now = time;
7184: my $navmap = Apache::lonnavmaps::navmap->new();
7185: foreach my $block (keys(%commblocks)) {
7186: if ($block =~ /^(\d+)____(\d+)$/) {
7187: my ($start,$end) = ($1,$2);
7188: if ($start <= $now && $end >= $now) {
7189: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7190: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7191: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7192: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7193: unless (grep(/^\Q$block\E$/,@blockers)) {
7194: push(@blockers,$block);
7195: }
7196: }
7197: }
7198: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7199: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7200: unless (grep(/^\Q$block\E$/,@blockers)) {
7201: push(@blockers,$block);
7202: }
7203: }
7204: }
7205: }
7206: }
7207: }
7208: } elsif ($block =~ /^firstaccess____(.+)$/) {
7209: my $item = $1;
7210: my @to_test;
7211: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7212: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7213: my $check_interval;
7214: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7215: my @interval;
7216: my $type = 'map';
7217: if ($item eq 'course') {
7218: $type = 'course';
7219: @interval=&EXT("resource.0.interval");
7220: } else {
7221: if ($item =~ /___\d+___/) {
7222: $type = 'resource';
7223: @interval=&EXT("resource.0.interval",$item);
7224: if (ref($navmap)) {
7225: my $res = $navmap->getBySymb($item);
7226: push(@to_test,$res);
7227: }
7228: } else {
7229: my $mapsymb = &symbread($item,1);
7230: if ($mapsymb) {
7231: if (ref($navmap)) {
7232: my $mapres = $navmap->getBySymb($mapsymb);
7233: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7234: foreach my $res (@to_test) {
7235: my $symb = $res->symb();
7236: next if ($symb eq $mapsymb);
7237: if ($symb ne '') {
7238: @interval=&EXT("resource.0.interval",$symb);
7239: last;
7240: }
7241: }
7242: }
7243: }
7244: }
7245: }
7246: if ($interval[0] =~ /\d+/) {
7247: my $first_access;
7248: if ($type eq 'resource') {
7249: $first_access=&get_first_access($interval[1],$item);
7250: } elsif ($type eq 'map') {
7251: $first_access=&get_first_access($interval[1],undef,$item);
7252: } else {
7253: $first_access=&get_first_access($interval[1]);
7254: }
7255: if ($first_access) {
7256: my $timesup = $first_access+$interval[0];
7257: if ($timesup > $now) {
7258: foreach my $res (@to_test) {
7259: if ($res->is_problem()) {
7260: if ($res->completable()) {
7261: unless (grep(/^\Q$block\E$/,@blockers)) {
7262: push(@blockers,$block);
7263: }
7264: last;
7265: }
7266: }
7267: }
7268: }
7269: }
7270: }
7271: }
7272: }
7273: }
7274: }
7275: }
7276: return @blockers;
7277: }
7278:
7279: sub check_docs_block {
7280: my ($docsblock,$tocheck) =@_;
7281: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7282: return;
7283: }
7284: if (ref($docsblock->{'maps'}) eq 'HASH') {
7285: if ($tocheck->{'maps'}) {
7286: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7287: return 1;
7288: }
7289: }
7290: }
7291: if (ref($docsblock->{'resources'}) eq 'HASH') {
7292: if ($tocheck->{'resources'}) {
7293: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7294: return 1;
7295: }
7296: }
7297: }
7298: return;
7299: }
7300:
7301: #
7302: # Removes the versino from a URI and
7303: # splits it in to its filename and path to the filename.
7304: # Seems like File::Basename could have done this more clearly.
7305: # Parameters:
7306: # $uri - input URI
7307: # Returns:
7308: # Two element list consisting of
7309: # $pathname - the URI up to and excluding the trailing /
7310: # $filename - The part of the URI following the last /
7311: # NOTE:
7312: # Another realization of this is simply:
7313: # use File::Basename;
7314: # ...
7315: # $uri = shift;
7316: # $filename = basename($uri);
7317: # $path = dirname($uri);
7318: # return ($filename, $path);
7319: #
7320: # The implementation below is probably faster however.
7321: #
7322: sub split_uri_for_cond {
7323: my $uri=&deversion(&declutter(shift));
7324: my @uriparts=split(/\//,$uri);
7325: my $filename=pop(@uriparts);
7326: my $pathname=join('/',@uriparts);
7327: return ($pathname,$filename);
7328: }
7329: # --------------------------------------------------- Is a resource on the map?
7330:
7331: sub is_on_map {
7332: my ($pathname,$filename) = &split_uri_for_cond(shift);
7333: #Trying to find the conditional for the file
7334: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7335: /\&\Q$filename\E\:([\d\|]+)\&/);
7336: if ($match) {
7337: return (1,$1);
7338: } else {
7339: return (0,0);
7340: }
7341: }
7342:
7343: # --------------------------------------------------------- Get symb from alias
7344:
7345: sub get_symb_from_alias {
7346: my $symb=shift;
7347: my ($map,$resid,$url)=&decode_symb($symb);
7348: # Already is a symb
7349: if ($url) { return $symb; }
7350: # Must be an alias
7351: my $aliassymb='';
7352: my %bighash;
7353: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7354: &GDBM_READER(),0640)) {
7355: my $rid=$bighash{'mapalias_'.$symb};
7356: if ($rid) {
7357: my ($mapid,$resid)=split(/\./,$rid);
7358: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7359: $resid,$bighash{'src_'.$rid});
7360: }
7361: untie %bighash;
7362: }
7363: return $aliassymb;
7364: }
7365:
7366: # ----------------------------------------------------------------- Define Role
7367:
7368: sub definerole {
7369: if (allowed('mcr','/')) {
7370: my ($rolename,$sysrole,$domrole,$courole)=@_;
7371: foreach my $role (split(':',$sysrole)) {
7372: my ($crole,$cqual)=split(/\&/,$role);
7373: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7374: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7375: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7376: return "refused:s:$crole&$cqual";
7377: }
7378: }
7379: }
7380: foreach my $role (split(':',$domrole)) {
7381: my ($crole,$cqual)=split(/\&/,$role);
7382: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7383: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7384: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7385: return "refused:d:$crole&$cqual";
7386: }
7387: }
7388: }
7389: foreach my $role (split(':',$courole)) {
7390: my ($crole,$cqual)=split(/\&/,$role);
7391: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7392: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7393: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7394: return "refused:c:$crole&$cqual";
7395: }
7396: }
7397: }
7398: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7399: "$env{'user.domain'}:$env{'user.name'}:".
7400: "rolesdef_$rolename=".
7401: escape($sysrole.'_'.$domrole.'_'.$courole);
7402: return reply($command,$env{'user.home'});
7403: } else {
7404: return 'refused';
7405: }
7406: }
7407:
7408: # ---------------- Make a metadata query against the network of library servers
7409:
7410: sub metadata_query {
7411: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7412: my %rhash;
7413: my %libserv = &all_library();
7414: my @server_list = (defined($server_array) ? @$server_array
7415: : keys(%libserv) );
7416: for my $server (@server_list) {
7417: my $domains = '';
7418: if (ref($domains_hash) eq 'HASH') {
7419: $domains = $domains_hash->{$server};
7420: }
7421: unless ($custom or $customshow) {
7422: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7423: $rhash{$server}=$reply;
7424: }
7425: else {
7426: my $reply=&reply("querysend:".&escape($query).':'.
7427: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7428: $server);
7429: $rhash{$server}=$reply;
7430: }
7431: }
7432: return \%rhash;
7433: }
7434:
7435: # ----------------------------------------- Send log queries and wait for reply
7436:
7437: sub log_query {
7438: my ($uname,$udom,$query,%filters)=@_;
7439: my $uhome=&homeserver($uname,$udom);
7440: if ($uhome eq 'no_host') { return 'error: no_host'; }
7441: my $uhost=&hostname($uhome);
7442: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7443: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7444: $uhome);
7445: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7446: return get_query_reply($queryid);
7447: }
7448:
7449: # -------------------------- Update MySQL table for portfolio file
7450:
7451: sub update_portfolio_table {
7452: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7453: if ($group ne '') {
7454: $file_name =~s /^\Q$group\E//;
7455: }
7456: my $homeserver = &homeserver($uname,$udom);
7457: my $queryid=
7458: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7459: ':'.&escape($file_name).':'.$action,$homeserver);
7460: my $reply = &get_query_reply($queryid);
7461: return $reply;
7462: }
7463:
7464: # -------------------------- Update MySQL allusers table
7465:
7466: sub update_allusers_table {
7467: my ($uname,$udom,$names) = @_;
7468: my $homeserver = &homeserver($uname,$udom);
7469: my $queryid=
7470: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7471: 'lastname='.&escape($names->{'lastname'}).'%%'.
7472: 'firstname='.&escape($names->{'firstname'}).'%%'.
7473: 'middlename='.&escape($names->{'middlename'}).'%%'.
7474: 'generation='.&escape($names->{'generation'}).'%%'.
7475: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7476: 'id='.&escape($names->{'id'}),$homeserver);
7477: return;
7478: }
7479:
7480: # ------- Request retrieval of institutional classlists for course(s)
7481:
7482: sub fetch_enrollment_query {
7483: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7484: my $homeserver;
7485: my $maxtries = 1;
7486: if ($context eq 'automated') {
7487: $homeserver = $perlvar{'lonHostID'};
7488: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7489: } else {
7490: $homeserver = &homeserver($cnum,$dom);
7491: }
7492: my $host=&hostname($homeserver);
7493: my $cmd = '';
7494: foreach my $affiliate (keys(%{$affiliatesref})) {
7495: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7496: }
7497: $cmd =~ s/%%$//;
7498: $cmd = &escape($cmd);
7499: my $query = 'fetchenrollment';
7500: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7501: unless ($queryid=~/^\Q$host\E\_/) {
7502: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7503: return 'error: '.$queryid;
7504: }
7505: my $reply = &get_query_reply($queryid);
7506: my $tries = 1;
7507: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7508: $reply = &get_query_reply($queryid);
7509: $tries ++;
7510: }
7511: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7512: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7513: } else {
7514: my @responses = split(/:/,$reply);
7515: if ($homeserver eq $perlvar{'lonHostID'}) {
7516: foreach my $line (@responses) {
7517: my ($key,$value) = split(/=/,$line,2);
7518: $$replyref{$key} = $value;
7519: }
7520: } else {
7521: my $pathname = LONCAPA::tempdir();
7522: foreach my $line (@responses) {
7523: my ($key,$value) = split(/=/,$line);
7524: $$replyref{$key} = $value;
7525: if ($value > 0) {
7526: foreach my $item (@{$$affiliatesref{$key}}) {
7527: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7528: my $destname = $pathname.'/'.$filename;
7529: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7530: if ($xml_classlist =~ /^error/) {
7531: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7532: } else {
7533: if ( open(FILE,">$destname") ) {
7534: print FILE &unescape($xml_classlist);
7535: close(FILE);
7536: } else {
7537: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7538: }
7539: }
7540: }
7541: }
7542: }
7543: }
7544: return 'ok';
7545: }
7546: return 'error';
7547: }
7548:
7549: sub get_query_reply {
7550: my $queryid=shift;
7551: my $replyfile=LONCAPA::tempdir().$queryid;
7552: my $reply='';
7553: for (1..100) {
7554: sleep 2;
7555: if (-e $replyfile.'.end') {
7556: if (open(my $fh,$replyfile)) {
7557: $reply = join('',<$fh>);
7558: close($fh);
7559: } else { return 'error: reply_file_error'; }
7560: return &unescape($reply);
7561: }
7562: }
7563: return 'timeout:'.$queryid;
7564: }
7565:
7566: sub courselog_query {
7567: #
7568: # possible filters:
7569: # url: url or symb
7570: # username
7571: # domain
7572: # action: view, submit, grade
7573: # start: timestamp
7574: # end: timestamp
7575: #
7576: my (%filters)=@_;
7577: unless ($env{'request.course.id'}) { return 'no_course'; }
7578: if ($filters{'url'}) {
7579: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7580: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7581: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7582: }
7583: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7584: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7585: return &log_query($cname,$cdom,'courselog',%filters);
7586: }
7587:
7588: sub userlog_query {
7589: #
7590: # possible filters:
7591: # action: log check role
7592: # start: timestamp
7593: # end: timestamp
7594: #
7595: my ($uname,$udom,%filters)=@_;
7596: return &log_query($uname,$udom,'userlog',%filters);
7597: }
7598:
7599: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7600:
7601: sub auto_run {
7602: my ($cnum,$cdom) = @_;
7603: my $response = 0;
7604: my $settings;
7605: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7606: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7607: $settings = $domconfig{'autoenroll'};
7608: if ($settings->{'run'} eq '1') {
7609: $response = 1;
7610: }
7611: } else {
7612: my $homeserver;
7613: if (&is_course($cdom,$cnum)) {
7614: $homeserver = &homeserver($cnum,$cdom);
7615: } else {
7616: $homeserver = &domain($cdom,'primary');
7617: }
7618: if ($homeserver ne 'no_host') {
7619: $response = &reply('autorun:'.$cdom,$homeserver);
7620: }
7621: }
7622: return $response;
7623: }
7624:
7625: sub auto_get_sections {
7626: my ($cnum,$cdom,$inst_coursecode) = @_;
7627: my $homeserver;
7628: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7629: $homeserver = &homeserver($cnum,$cdom);
7630: }
7631: if (!defined($homeserver)) {
7632: if ($cdom =~ /^$match_domain$/) {
7633: $homeserver = &domain($cdom,'primary');
7634: }
7635: }
7636: my @secs;
7637: if (defined($homeserver)) {
7638: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7639: unless ($response eq 'refused') {
7640: @secs = split(/:/,$response);
7641: }
7642: }
7643: return @secs;
7644: }
7645:
7646: sub auto_new_course {
7647: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7648: my $homeserver = &homeserver($cnum,$cdom);
7649: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7650: return $response;
7651: }
7652:
7653: sub auto_validate_courseID {
7654: my ($cnum,$cdom,$inst_course_id) = @_;
7655: my $homeserver = &homeserver($cnum,$cdom);
7656: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7657: return $response;
7658: }
7659:
7660: sub auto_validate_instcode {
7661: my ($cnum,$cdom,$instcode,$owner) = @_;
7662: my ($homeserver,$response);
7663: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7664: $homeserver = &homeserver($cnum,$cdom);
7665: }
7666: if (!defined($homeserver)) {
7667: if ($cdom =~ /^$match_domain$/) {
7668: $homeserver = &domain($cdom,'primary');
7669: }
7670: }
7671: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7672: &escape($instcode).':'.&escape($owner),$homeserver));
7673: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7674: return ($outcome,$description,$defaultcredits);
7675: }
7676:
7677: sub auto_create_password {
7678: my ($cnum,$cdom,$authparam,$udom) = @_;
7679: my ($homeserver,$response);
7680: my $create_passwd = 0;
7681: my $authchk = '';
7682: if ($udom =~ /^$match_domain$/) {
7683: $homeserver = &domain($udom,'primary');
7684: }
7685: if ($homeserver eq '') {
7686: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7687: $homeserver = &homeserver($cnum,$cdom);
7688: }
7689: }
7690: if ($homeserver eq '') {
7691: $authchk = 'nodomain';
7692: } else {
7693: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7694: if ($response eq 'refused') {
7695: $authchk = 'refused';
7696: } else {
7697: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7698: }
7699: }
7700: return ($authparam,$create_passwd,$authchk);
7701: }
7702:
7703: sub auto_photo_permission {
7704: my ($cnum,$cdom,$students) = @_;
7705: my $homeserver = &homeserver($cnum,$cdom);
7706: my ($outcome,$perm_reqd,$conditions) =
7707: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7708: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7709: return (undef,undef);
7710: }
7711: return ($outcome,$perm_reqd,$conditions);
7712: }
7713:
7714: sub auto_checkphotos {
7715: my ($uname,$udom,$pid) = @_;
7716: my $homeserver = &homeserver($uname,$udom);
7717: my ($result,$resulttype);
7718: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7719: &escape($uname).':'.&escape($pid),
7720: $homeserver));
7721: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7722: return (undef,undef);
7723: }
7724: if ($outcome) {
7725: ($result,$resulttype) = split(/:/,$outcome);
7726: }
7727: return ($result,$resulttype);
7728: }
7729:
7730: sub auto_photochoice {
7731: my ($cnum,$cdom) = @_;
7732: my $homeserver = &homeserver($cnum,$cdom);
7733: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7734: &escape($cdom),
7735: $homeserver)));
7736: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7737: return (undef,undef);
7738: }
7739: return ($update,$comment);
7740: }
7741:
7742: sub auto_photoupdate {
7743: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7744: my $homeserver = &homeserver($cnum,$dom);
7745: my $host=&hostname($homeserver);
7746: my $cmd = '';
7747: my $maxtries = 1;
7748: foreach my $affiliate (keys(%{$affiliatesref})) {
7749: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7750: }
7751: $cmd =~ s/%%$//;
7752: $cmd = &escape($cmd);
7753: my $query = 'institutionalphotos';
7754: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7755: unless ($queryid=~/^\Q$host\E\_/) {
7756: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7757: return 'error: '.$queryid;
7758: }
7759: my $reply = &get_query_reply($queryid);
7760: my $tries = 1;
7761: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7762: $reply = &get_query_reply($queryid);
7763: $tries ++;
7764: }
7765: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7766: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7767: } else {
7768: my @responses = split(/:/,$reply);
7769: my $outcome = shift(@responses);
7770: foreach my $item (@responses) {
7771: my ($key,$value) = split(/=/,$item);
7772: $$photo{$key} = $value;
7773: }
7774: return $outcome;
7775: }
7776: return 'error';
7777: }
7778:
7779: sub auto_instcode_format {
7780: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7781: $cat_order) = @_;
7782: my $courses = '';
7783: my @homeservers;
7784: if ($caller eq 'global') {
7785: my %servers = &get_servers($codedom,'library');
7786: foreach my $tryserver (keys(%servers)) {
7787: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7788: push(@homeservers,$tryserver);
7789: }
7790: }
7791: } elsif ($caller eq 'requests') {
7792: if ($codedom =~ /^$match_domain$/) {
7793: my $chome = &domain($codedom,'primary');
7794: unless ($chome eq 'no_host') {
7795: push(@homeservers,$chome);
7796: }
7797: }
7798: } else {
7799: push(@homeservers,&homeserver($caller,$codedom));
7800: }
7801: foreach my $code (keys(%{$instcodes})) {
7802: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7803: }
7804: chop($courses);
7805: my $ok_response = 0;
7806: my $response;
7807: while (@homeservers > 0 && $ok_response == 0) {
7808: my $server = shift(@homeservers);
7809: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7810: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7811: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7812: split(/:/,$response);
7813: %{$codes} = (%{$codes},&str2hash($codes_str));
7814: push(@{$codetitles},&str2array($codetitles_str));
7815: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7816: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7817: $ok_response = 1;
7818: }
7819: }
7820: if ($ok_response) {
7821: return 'ok';
7822: } else {
7823: return $response;
7824: }
7825: }
7826:
7827: sub auto_instcode_defaults {
7828: my ($domain,$returnhash,$code_order) = @_;
7829: my @homeservers;
7830:
7831: my %servers = &get_servers($domain,'library');
7832: foreach my $tryserver (keys(%servers)) {
7833: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7834: push(@homeservers,$tryserver);
7835: }
7836: }
7837:
7838: my $response;
7839: foreach my $server (@homeservers) {
7840: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7841: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7842:
7843: foreach my $pair (split(/\&/,$response)) {
7844: my ($name,$value)=split(/\=/,$pair);
7845: if ($name eq 'code_order') {
7846: @{$code_order} = split(/\&/,&unescape($value));
7847: } else {
7848: $returnhash->{&unescape($name)}=&unescape($value);
7849: }
7850: }
7851: return 'ok';
7852: }
7853:
7854: return $response;
7855: }
7856:
7857: sub auto_possible_instcodes {
7858: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7859: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7860: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7861: return;
7862: }
7863: my (@homeservers,$uhome);
7864: if (defined(&domain($domain,'primary'))) {
7865: $uhome=&domain($domain,'primary');
7866: push(@homeservers,&domain($domain,'primary'));
7867: } else {
7868: my %servers = &get_servers($domain,'library');
7869: foreach my $tryserver (keys(%servers)) {
7870: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7871: push(@homeservers,$tryserver);
7872: }
7873: }
7874: }
7875: my $response;
7876: foreach my $server (@homeservers) {
7877: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7878: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7879: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7880: split(':',$response);
7881: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7882: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7883: foreach my $item (split('&',$cat_title)) {
7884: my ($name,$value)=split('=',$item);
7885: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7886: }
7887: foreach my $item (split('&',$cat_order)) {
7888: my ($name,$value)=split('=',$item);
7889: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7890: }
7891: return 'ok';
7892: }
7893: return $response;
7894: }
7895:
7896: sub auto_courserequest_checks {
7897: my ($dom) = @_;
7898: my ($homeserver,%validations);
7899: if ($dom =~ /^$match_domain$/) {
7900: $homeserver = &domain($dom,'primary');
7901: }
7902: unless ($homeserver eq 'no_host') {
7903: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7904: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7905: my @items = split(/&/,$response);
7906: foreach my $item (@items) {
7907: my ($key,$value) = split('=',$item);
7908: $validations{&unescape($key)} = &thaw_unescape($value);
7909: }
7910: }
7911: }
7912: return %validations;
7913: }
7914:
7915: sub auto_courserequest_validation {
7916: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
7917: my ($homeserver,$response);
7918: if ($dom =~ /^$match_domain$/) {
7919: $homeserver = &domain($dom,'primary');
7920: }
7921: unless ($homeserver eq 'no_host') {
7922: my $customdata;
7923: if (ref($custominfo) eq 'HASH') {
7924: $customdata = &freeze_escape($custominfo);
7925: }
7926: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7927: ':'.&escape($crstype).':'.&escape($inststatuslist).
7928: ':'.&escape($instcode).':'.&escape($instseclist).':'.
7929: $customdata,$homeserver));
7930: }
7931: return $response;
7932: }
7933:
7934: sub auto_validate_class_sec {
7935: my ($cdom,$cnum,$owners,$inst_class) = @_;
7936: my $homeserver = &homeserver($cnum,$cdom);
7937: my $ownerlist;
7938: if (ref($owners) eq 'ARRAY') {
7939: $ownerlist = join(',',@{$owners});
7940: } else {
7941: $ownerlist = $owners;
7942: }
7943: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7944: &escape($ownerlist).':'.$cdom,$homeserver);
7945: return $response;
7946: }
7947:
7948: sub auto_crsreq_update {
7949: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
7950: $code,$accessstart,$accessend,$inbound) = @_;
7951: my ($homeserver,%crsreqresponse);
7952: if ($cdom =~ /^$match_domain$/) {
7953: $homeserver = &domain($cdom,'primary');
7954: }
7955: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
7956: my $info;
7957: if (ref($inbound) eq 'HASH') {
7958: $info = &freeze_escape($inbound);
7959: }
7960: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
7961: ':'.&escape($action).':'.&escape($ownername).':'.
7962: &escape($ownerdomain).':'.&escape($fullname).':'.
7963: &escape($title).':'.&escape($code).':'.
7964: &escape($accessstart).':'.&escape($accessend).':'.$info,
7965: $homeserver);
7966: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7967: my @items = split(/&/,$response);
7968: foreach my $item (@items) {
7969: my ($key,$value) = split('=',$item);
7970: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
7971: }
7972: }
7973: }
7974: return \%crsreqresponse;
7975: }
7976:
7977: # ------------------------------------------------------- Course Group routines
7978:
7979: sub get_coursegroups {
7980: my ($cdom,$cnum,$group,$namespace) = @_;
7981: return(&dump($namespace,$cdom,$cnum,$group));
7982: }
7983:
7984: sub modify_coursegroup {
7985: my ($cdom,$cnum,$groupsettings) = @_;
7986: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7987: }
7988:
7989: sub toggle_coursegroup_status {
7990: my ($cdom,$cnum,$group,$action) = @_;
7991: my ($from_namespace,$to_namespace);
7992: if ($action eq 'delete') {
7993: $from_namespace = 'coursegroups';
7994: $to_namespace = 'deleted_groups';
7995: } else {
7996: $from_namespace = 'deleted_groups';
7997: $to_namespace = 'coursegroups';
7998: }
7999: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8000: if (my $tmp = &error(%curr_group)) {
8001: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8002: return ('read error',$tmp);
8003: } else {
8004: my %savedsettings = %curr_group;
8005: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8006: my $deloutcome;
8007: if ($result eq 'ok') {
8008: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8009: } else {
8010: return ('write error',$result);
8011: }
8012: if ($deloutcome eq 'ok') {
8013: return 'ok';
8014: } else {
8015: return ('delete error',$deloutcome);
8016: }
8017: }
8018: }
8019:
8020: sub modify_group_roles {
8021: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8022: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8023: my $role = 'gr/'.&escape($userprivs);
8024: my ($uname,$udom) = split(/:/,$user);
8025: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8026: if ($result eq 'ok') {
8027: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8028: }
8029: return $result;
8030: }
8031:
8032: sub modify_coursegroup_membership {
8033: my ($cdom,$cnum,$membership) = @_;
8034: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8035: return $result;
8036: }
8037:
8038: sub get_active_groups {
8039: my ($udom,$uname,$cdom,$cnum) = @_;
8040: my $now = time;
8041: my %groups = ();
8042: foreach my $key (keys(%env)) {
8043: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8044: my ($start,$end) = split(/\./,$env{$key});
8045: if (($end!=0) && ($end<$now)) { next; }
8046: if (($start!=0) && ($start>$now)) { next; }
8047: if ($1 eq $cdom && $2 eq $cnum) {
8048: $groups{$3} = $env{$key} ;
8049: }
8050: }
8051: }
8052: return %groups;
8053: }
8054:
8055: sub get_group_membership {
8056: my ($cdom,$cnum,$group) = @_;
8057: return(&dump('groupmembership',$cdom,$cnum,$group));
8058: }
8059:
8060: sub get_users_groups {
8061: my ($udom,$uname,$courseid) = @_;
8062: my @usersgroups;
8063: my $cachetime=1800;
8064:
8065: my $hashid="$udom:$uname:$courseid";
8066: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8067: if (defined($cached)) {
8068: @usersgroups = split(/:/,$grouplist);
8069: } else {
8070: $grouplist = '';
8071: my $courseurl = &courseid_to_courseurl($courseid);
8072: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8073: my $access_end = $env{'course.'.$courseid.
8074: '.default_enrollment_end_date'};
8075: my $now = time;
8076: foreach my $key (keys(%roleshash)) {
8077: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8078: my $group = $1;
8079: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8080: my $start = $2;
8081: my $end = $1;
8082: if ($start == -1) { next; } # deleted from group
8083: if (($start!=0) && ($start>$now)) { next; }
8084: if (($end!=0) && ($end<$now)) {
8085: if ($access_end && $access_end < $now) {
8086: if ($access_end - $end < 86400) {
8087: push(@usersgroups,$group);
8088: }
8089: }
8090: next;
8091: }
8092: push(@usersgroups,$group);
8093: }
8094: }
8095: }
8096: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8097: $grouplist = join(':',@usersgroups);
8098: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8099: }
8100: return @usersgroups;
8101: }
8102:
8103: sub devalidate_getgroups_cache {
8104: my ($udom,$uname,$cdom,$cnum)=@_;
8105: my $courseid = $cdom.'_'.$cnum;
8106:
8107: my $hashid="$udom:$uname:$courseid";
8108: &devalidate_cache_new('getgroups',$hashid);
8109: }
8110:
8111: # ------------------------------------------------------------------ Plain Text
8112:
8113: sub plaintext {
8114: my ($short,$type,$cid,$forcedefault) = @_;
8115: if ($short =~ m{^cr/}) {
8116: return (split('/',$short))[-1];
8117: }
8118: if (!defined($cid)) {
8119: $cid = $env{'request.course.id'};
8120: }
8121: my %rolenames = (
8122: Course => 'std',
8123: Community => 'alt1',
8124: );
8125: if ($cid ne '') {
8126: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8127: unless ($forcedefault) {
8128: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8129: &Apache::lonlocal::mt_escape(\$roletext);
8130: return &Apache::lonlocal::mt($roletext);
8131: }
8132: }
8133: }
8134: if ((defined($type)) && (defined($rolenames{$type})) &&
8135: (defined($rolenames{$type})) &&
8136: (defined($prp{$short}{$rolenames{$type}}))) {
8137: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8138: } elsif ($cid ne '') {
8139: my $crstype = $env{'course.'.$cid.'.type'};
8140: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8141: (defined($prp{$short}{$rolenames{$crstype}}))) {
8142: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8143: }
8144: }
8145: return &Apache::lonlocal::mt($prp{$short}{'std'});
8146: }
8147:
8148: # ----------------------------------------------------------------- Assign Role
8149:
8150: sub assignrole {
8151: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8152: $context)=@_;
8153: my $mrole;
8154: if ($role =~ /^cr\//) {
8155: my $cwosec=$url;
8156: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8157: unless (&allowed('ccr',$cwosec)) {
8158: my $refused = 1;
8159: if ($context eq 'requestcourses') {
8160: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8161: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8162: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8163: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8164: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8165: if ($crsenv{'internal.courseowner'} eq
8166: $env{'user.name'}.':'.$env{'user.domain'}) {
8167: $refused = '';
8168: }
8169: }
8170: }
8171: }
8172: }
8173: if ($refused) {
8174: &logthis('Refused custom assignrole: '.
8175: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8176: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8177: return 'refused';
8178: }
8179: }
8180: $mrole='cr';
8181: } elsif ($role =~ /^gr\//) {
8182: my $cwogrp=$url;
8183: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8184: unless (&allowed('mdg',$cwogrp)) {
8185: &logthis('Refused group assignrole: '.
8186: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8187: $env{'user.name'}.' at '.$env{'user.domain'});
8188: return 'refused';
8189: }
8190: $mrole='gr';
8191: } else {
8192: my $cwosec=$url;
8193: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8194: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8195: my $refused;
8196: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8197: if (!(&allowed('c'.$role,$url))) {
8198: $refused = 1;
8199: }
8200: } else {
8201: $refused = 1;
8202: }
8203: if ($refused) {
8204: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8205: if (!$selfenroll && $context eq 'course') {
8206: my %crsenv;
8207: if ($role eq 'cc' || $role eq 'co') {
8208: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8209: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8210: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8211: if ($crsenv{'internal.courseowner'} eq
8212: $env{'user.name'}.':'.$env{'user.domain'}) {
8213: $refused = '';
8214: }
8215: }
8216: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8217: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8218: if ($crsenv{'internal.courseowner'} eq
8219: $env{'user.name'}.':'.$env{'user.domain'}) {
8220: $refused = '';
8221: }
8222: }
8223: }
8224: }
8225: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8226: $refused = '';
8227: } elsif ($context eq 'requestcourses') {
8228: my @possroles = ('st','ta','ep','in','cc','co');
8229: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8230: my $wrongcc;
8231: if ($cnum =~ /^$match_community$/) {
8232: $wrongcc = 1 if ($role eq 'cc');
8233: } else {
8234: $wrongcc = 1 if ($role eq 'co');
8235: }
8236: unless ($wrongcc) {
8237: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8238: if ($crsenv{'internal.courseowner'} eq
8239: $env{'user.name'}.':'.$env{'user.domain'}) {
8240: $refused = '';
8241: }
8242: }
8243: }
8244: } elsif ($context eq 'requestauthor') {
8245: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8246: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8247: if ($env{'environment.requestauthor'} eq 'automatic') {
8248: $refused = '';
8249: } else {
8250: my %domdefaults = &get_domain_defaults($udom);
8251: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8252: my $checkbystatus;
8253: if ($env{'user.adv'}) {
8254: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8255: if ($disposition eq 'automatic') {
8256: $refused = '';
8257: } elsif ($disposition eq '') {
8258: $checkbystatus = 1;
8259: }
8260: } else {
8261: $checkbystatus = 1;
8262: }
8263: if ($checkbystatus) {
8264: if ($env{'environment.inststatus'}) {
8265: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8266: foreach my $type (@inststatuses) {
8267: if (($type ne '') &&
8268: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8269: $refused = '';
8270: }
8271: }
8272: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8273: $refused = '';
8274: }
8275: }
8276: }
8277: }
8278: }
8279: }
8280: if ($refused) {
8281: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8282: ' '.$role.' '.$end.' '.$start.' by '.
8283: $env{'user.name'}.' at '.$env{'user.domain'});
8284: return 'refused';
8285: }
8286: }
8287: } elsif ($role eq 'au') {
8288: if ($url ne '/'.$udom.'/') {
8289: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8290: ' to assign author role for '.$uname.':'.$udom.
8291: ' in domain: '.$url.' refused (wrong domain).');
8292: return 'refused';
8293: }
8294: }
8295: $mrole=$role;
8296: }
8297: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8298: "$udom:$uname:$url".'_'."$mrole=$role";
8299: if ($end) { $command.='_'.$end; }
8300: if ($start) {
8301: if ($end) {
8302: $command.='_'.$start;
8303: } else {
8304: $command.='_0_'.$start;
8305: }
8306: }
8307: my $origstart = $start;
8308: my $origend = $end;
8309: my $delflag;
8310: # actually delete
8311: if ($deleteflag) {
8312: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8313: # modify command to delete the role
8314: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8315: "$udom:$uname:$url".'_'."$mrole";
8316: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8317: # set start and finish to negative values for userrolelog
8318: $start=-1;
8319: $end=-1;
8320: $delflag = 1;
8321: }
8322: }
8323: # send command
8324: my $answer=&reply($command,&homeserver($uname,$udom));
8325: # log new user role if status is ok
8326: if ($answer eq 'ok') {
8327: &userrolelog($role,$uname,$udom,$url,$start,$end);
8328: if (($role eq 'cc') || ($role eq 'in') ||
8329: ($role eq 'ep') || ($role eq 'ad') ||
8330: ($role eq 'ta') || ($role eq 'st') ||
8331: ($role=~/^cr/) || ($role eq 'gr') ||
8332: ($role eq 'co')) {
8333: # for course roles, perform group memberships changes triggered by role change.
8334: unless ($role =~ /^gr/) {
8335: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8336: $origstart,$selfenroll,$context);
8337: }
8338: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8339: $selfenroll,$context);
8340: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8341: ($role eq 'au') || ($role eq 'dc')) {
8342: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8343: $context);
8344: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8345: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8346: $context);
8347: }
8348: if ($role eq 'cc') {
8349: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8350: }
8351: }
8352: return $answer;
8353: }
8354:
8355: sub autoupdate_coowners {
8356: my ($url,$end,$start,$uname,$udom) = @_;
8357: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8358: if (($cdom ne '') && ($cnum ne '')) {
8359: my $now = time;
8360: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8361: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8362: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8363: my $instcode = $coursehash{'internal.coursecode'};
8364: if ($instcode ne '') {
8365: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8366: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8367: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8368: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8369: if ($result eq 'valid') {
8370: if ($coursehash{'internal.co-owners'}) {
8371: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8372: push(@newcoowners,$coowner);
8373: }
8374: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8375: push(@newcoowners,$uname.':'.$udom);
8376: }
8377: @newcoowners = sort(@newcoowners);
8378: } else {
8379: push(@newcoowners,$uname.':'.$udom);
8380: }
8381: } else {
8382: if ($coursehash{'internal.co-owners'}) {
8383: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8384: unless ($coowner eq $uname.':'.$udom) {
8385: push(@newcoowners,$coowner);
8386: }
8387: }
8388: unless (@newcoowners > 0) {
8389: $delcoowners = 1;
8390: $coowners = '';
8391: }
8392: }
8393: }
8394: if (@newcoowners || $delcoowners) {
8395: &store_coowners($cdom,$cnum,$coursehash{'home'},
8396: $delcoowners,@newcoowners);
8397: }
8398: }
8399: }
8400: }
8401: }
8402: }
8403: }
8404:
8405: sub store_coowners {
8406: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8407: my $cid = $cdom.'_'.$cnum;
8408: my ($coowners,$delresult,$putresult);
8409: if (@newcoowners) {
8410: $coowners = join(',',@newcoowners);
8411: my %coownershash = (
8412: 'internal.co-owners' => $coowners,
8413: );
8414: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8415: if ($putresult eq 'ok') {
8416: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8417: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8418: }
8419: }
8420: }
8421: if ($delcoowners) {
8422: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8423: if ($delresult eq 'ok') {
8424: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8425: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8426: }
8427: }
8428: }
8429: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8430: my %crsinfo =
8431: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8432: if (ref($crsinfo{$cid}) eq 'HASH') {
8433: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8434: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8435: }
8436: }
8437: }
8438:
8439: # -------------------------------------------------- Modify user authentication
8440: # Overrides without validation
8441:
8442: sub modifyuserauth {
8443: my ($udom,$uname,$umode,$upass)=@_;
8444: my $uhome=&homeserver($uname,$udom);
8445: unless (&allowed('mau',$udom)) { return 'refused'; }
8446: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8447: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8448: ' in domain '.$env{'request.role.domain'});
8449: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8450: &escape($upass),$uhome);
8451: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8452: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8453: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8454: &log($udom,,$uname,$uhome,
8455: 'Authentication changed by '.$env{'user.domain'}.', '.
8456: $env{'user.name'}.', '.$umode.
8457: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8458: unless ($reply eq 'ok') {
8459: &logthis('Authentication mode error: '.$reply);
8460: return 'error: '.$reply;
8461: }
8462: return 'ok';
8463: }
8464:
8465: # --------------------------------------------------------------- Modify a user
8466:
8467: sub modifyuser {
8468: my ($udom, $uname, $uid,
8469: $umode, $upass, $first,
8470: $middle, $last, $gene,
8471: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8472: $udom= &LONCAPA::clean_domain($udom);
8473: $uname=&LONCAPA::clean_username($uname);
8474: my $showcandelete = 'none';
8475: if (ref($candelete) eq 'ARRAY') {
8476: if (@{$candelete} > 0) {
8477: $showcandelete = join(', ',@{$candelete});
8478: }
8479: }
8480: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8481: $umode.', '.$first.', '.$middle.', '.
8482: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8483: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8484: ' desiredhome not specified').
8485: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8486: ' in domain '.$env{'request.role.domain'});
8487: my $uhome=&homeserver($uname,$udom,'true');
8488: my $newuser;
8489: if ($uhome eq 'no_host') {
8490: $newuser = 1;
8491: }
8492: # ----------------------------------------------------------------- Create User
8493: if (($uhome eq 'no_host') &&
8494: (($umode && $upass) || ($umode eq 'localauth'))) {
8495: my $unhome='';
8496: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8497: $unhome = $desiredhome;
8498: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8499: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8500: } else { # load balancing routine for determining $unhome
8501: my $loadm=10000000;
8502: my %servers = &get_servers($udom,'library');
8503: foreach my $tryserver (keys(%servers)) {
8504: my $answer=reply('load',$tryserver);
8505: if (($answer=~/\d+/) && ($answer<$loadm)) {
8506: $loadm=$answer;
8507: $unhome=$tryserver;
8508: }
8509: }
8510: }
8511: if (($unhome eq '') || ($unhome eq 'no_host')) {
8512: return 'error: unable to find a home server for '.$uname.
8513: ' in domain '.$udom;
8514: }
8515: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8516: &escape($upass),$unhome);
8517: unless ($reply eq 'ok') {
8518: return 'error: '.$reply;
8519: }
8520: $uhome=&homeserver($uname,$udom,'true');
8521: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8522: return 'error: unable verify users home machine.';
8523: }
8524: } # End of creation of new user
8525: # ---------------------------------------------------------------------- Add ID
8526: if ($uid) {
8527: $uid=~tr/A-Z/a-z/;
8528: my %uidhash=&idrget($udom,$uname);
8529: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8530: && (!$forceid)) {
8531: unless ($uid eq $uidhash{$uname}) {
8532: return 'error: user id "'.$uid.'" does not match '.
8533: 'current user id "'.$uidhash{$uname}.'".';
8534: }
8535: } else {
8536: &idput($udom,($uname => $uid));
8537: }
8538: }
8539: # -------------------------------------------------------------- Add names, etc
8540: my @tmp=&get('environment',
8541: ['firstname','middlename','lastname','generation','id',
8542: 'permanentemail','inststatus'],
8543: $udom,$uname);
8544: my (%names,%oldnames);
8545: if ($tmp[0] =~ m/^error:.*/) {
8546: %names=();
8547: } else {
8548: %names = @tmp;
8549: %oldnames = %names;
8550: }
8551: #
8552: # If name, email and/or uid are blank (e.g., because an uploaded file
8553: # of users did not contain them), do not overwrite existing values
8554: # unless field is in $candelete array ref.
8555: #
8556:
8557: my @fields = ('firstname','middlename','lastname','generation',
8558: 'permanentemail','id');
8559: my %newvalues;
8560: if (ref($candelete) eq 'ARRAY') {
8561: foreach my $field (@fields) {
8562: if (grep(/^\Q$field\E$/,@{$candelete})) {
8563: if ($field eq 'firstname') {
8564: $names{$field} = $first;
8565: } elsif ($field eq 'middlename') {
8566: $names{$field} = $middle;
8567: } elsif ($field eq 'lastname') {
8568: $names{$field} = $last;
8569: } elsif ($field eq 'generation') {
8570: $names{$field} = $gene;
8571: } elsif ($field eq 'permanentemail') {
8572: $names{$field} = $email;
8573: } elsif ($field eq 'id') {
8574: $names{$field} = $uid;
8575: }
8576: }
8577: }
8578: }
8579: if ($first) { $names{'firstname'} = $first; }
8580: if (defined($middle)) { $names{'middlename'} = $middle; }
8581: if ($last) { $names{'lastname'} = $last; }
8582: if (defined($gene)) { $names{'generation'} = $gene; }
8583: if ($email) {
8584: $email=~s/[^\w\@\.\-\,]//gs;
8585: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8586: }
8587: if ($uid) { $names{'id'} = $uid; }
8588: if (defined($inststatus)) {
8589: $names{'inststatus'} = '';
8590: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8591: if (ref($usertypes) eq 'HASH') {
8592: my @okstatuses;
8593: foreach my $item (split(/:/,$inststatus)) {
8594: if (defined($usertypes->{$item})) {
8595: push(@okstatuses,$item);
8596: }
8597: }
8598: if (@okstatuses) {
8599: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8600: }
8601: }
8602: }
8603: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8604: $umode.', '.$first.', '.$middle.', '.
8605: $last.', '.$gene.', '.$email.', '.$inststatus;
8606: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8607: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8608: } else {
8609: $logmsg .= ' during self creation';
8610: }
8611: my $changed;
8612: if ($newuser) {
8613: $changed = 1;
8614: } else {
8615: foreach my $field (@fields) {
8616: if ($names{$field} ne $oldnames{$field}) {
8617: $changed = 1;
8618: last;
8619: }
8620: }
8621: }
8622: unless ($changed) {
8623: $logmsg = 'No changes in user information needed for: '.$logmsg;
8624: &logthis($logmsg);
8625: return 'ok';
8626: }
8627: my $reply = &put('environment', \%names, $udom,$uname);
8628: if ($reply ne 'ok') {
8629: return 'error: '.$reply;
8630: }
8631: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8632: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8633: }
8634: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8635: &devalidate_cache_new('namescache',$uname.':'.$udom);
8636: $logmsg = 'Success modifying user '.$logmsg;
8637: &logthis($logmsg);
8638: return 'ok';
8639: }
8640:
8641: # -------------------------------------------------------------- Modify student
8642:
8643: sub modifystudent {
8644: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8645: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8646: $selfenroll,$context,$inststatus,$credits)=@_;
8647: if (!$cid) {
8648: unless ($cid=$env{'request.course.id'}) {
8649: return 'not_in_class';
8650: }
8651: }
8652: # --------------------------------------------------------------- Make the user
8653: my $reply=&modifyuser
8654: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8655: $desiredhome,$email,$inststatus);
8656: unless ($reply eq 'ok') { return $reply; }
8657: # This will cause &modify_student_enrollment to get the uid from the
8658: # student's environment
8659: $uid = undef if (!$forceid);
8660: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8661: $gene,$usec,$end,$start,$type,$locktype,
8662: $cid,$selfenroll,$context,$credits);
8663: return $reply;
8664: }
8665:
8666: sub modify_student_enrollment {
8667: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8668: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8669: my ($cdom,$cnum,$chome);
8670: if (!$cid) {
8671: unless ($cid=$env{'request.course.id'}) {
8672: return 'not_in_class';
8673: }
8674: $cdom=$env{'course.'.$cid.'.domain'};
8675: $cnum=$env{'course.'.$cid.'.num'};
8676: } else {
8677: ($cdom,$cnum)=split(/_/,$cid);
8678: }
8679: $chome=$env{'course.'.$cid.'.home'};
8680: if (!$chome) {
8681: $chome=&homeserver($cnum,$cdom);
8682: }
8683: if (!$chome) { return 'unknown_course'; }
8684: # Make sure the user exists
8685: my $uhome=&homeserver($uname,$udom);
8686: if (($uhome eq '') || ($uhome eq 'no_host')) {
8687: return 'error: no such user';
8688: }
8689: # Get student data if we were not given enough information
8690: if (!defined($first) || $first eq '' ||
8691: !defined($last) || $last eq '' ||
8692: !defined($uid) || $uid eq '' ||
8693: !defined($middle) || $middle eq '' ||
8694: !defined($gene) || $gene eq '') {
8695: # They did not supply us with enough data to enroll the student, so
8696: # we need to pick up more information.
8697: my %tmp = &get('environment',
8698: ['firstname','middlename','lastname', 'generation','id']
8699: ,$udom,$uname);
8700:
8701: #foreach my $key (keys(%tmp)) {
8702: # &logthis("key $key = ".$tmp{$key});
8703: #}
8704: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8705: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8706: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8707: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8708: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8709: }
8710: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8711: my $user = "$uname:$udom";
8712: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8713: my $reply=cput('classlist',
8714: {$user =>
8715: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8716: $cdom,$cnum);
8717: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8718: &devalidate_getsection_cache($udom,$uname,$cid);
8719: } else {
8720: return 'error: '.$reply;
8721: }
8722: # Add student role to user
8723: my $uurl='/'.$cid;
8724: $uurl=~s/\_/\//g;
8725: if ($usec) {
8726: $uurl.='/'.$usec;
8727: }
8728: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8729: $selfenroll,$context);
8730: if ($result ne 'ok') {
8731: if ($old_entry{$user} ne '') {
8732: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8733: } else {
8734: $reply = &del('classlist',[$user],$cdom,$cnum);
8735: }
8736: }
8737: return $result;
8738: }
8739:
8740: sub format_name {
8741: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8742: my $name;
8743: if ($first ne 'lastname') {
8744: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8745: } else {
8746: if ($lastname=~/\S/) {
8747: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8748: $name=~s/\s+,/,/;
8749: } else {
8750: $name.= $firstname.' '.$middlename.' '.$generation;
8751: }
8752: }
8753: $name=~s/^\s+//;
8754: $name=~s/\s+$//;
8755: $name=~s/\s+/ /g;
8756: return $name;
8757: }
8758:
8759: # ------------------------------------------------- Write to course preferences
8760:
8761: sub writecoursepref {
8762: my ($courseid,%prefs)=@_;
8763: $courseid=~s/^\///;
8764: $courseid=~s/\_/\//g;
8765: my ($cdomain,$cnum)=split(/\//,$courseid);
8766: my $chome=homeserver($cnum,$cdomain);
8767: if (($chome eq '') || ($chome eq 'no_host')) {
8768: return 'error: no such course';
8769: }
8770: my $cstring='';
8771: foreach my $pref (keys(%prefs)) {
8772: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8773: }
8774: $cstring=~s/\&$//;
8775: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8776: }
8777:
8778: # ---------------------------------------------------------- Make/modify course
8779:
8780: sub createcourse {
8781: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8782: $course_owner,$crstype,$cnum,$context,$category)=@_;
8783: $url=&declutter($url);
8784: my $cid='';
8785: if ($context eq 'requestcourses') {
8786: my $can_create = 0;
8787: my ($ownername,$ownerdom) = split(':',$course_owner);
8788: if ($udom eq $ownerdom) {
8789: if (&usertools_access($ownername,$ownerdom,$category,undef,
8790: $context)) {
8791: $can_create = 1;
8792: }
8793: } else {
8794: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8795: $category);
8796: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8797: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8798: if (@curr > 0) {
8799: my @options = qw(approval validate autolimit);
8800: my $optregex = join('|',@options);
8801: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8802: $can_create = 1;
8803: }
8804: }
8805: }
8806: }
8807: if ($can_create) {
8808: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8809: unless (&allowed('ccc',$udom)) {
8810: return 'refused';
8811: }
8812: }
8813: } else {
8814: return 'refused';
8815: }
8816: } elsif (!&allowed('ccc',$udom)) {
8817: return 'refused';
8818: }
8819: # --------------------------------------------------------------- Get Unique ID
8820: my $uname;
8821: if ($cnum =~ /^$match_courseid$/) {
8822: my $chome=&homeserver($cnum,$udom,'true');
8823: if (($chome eq '') || ($chome eq 'no_host')) {
8824: $uname = $cnum;
8825: } else {
8826: $uname = &generate_coursenum($udom,$crstype);
8827: }
8828: } else {
8829: $uname = &generate_coursenum($udom,$crstype);
8830: }
8831: return $uname if ($uname =~ /^error/);
8832: # -------------------------------------------------- Check supplied server name
8833: if (!defined($course_server)) {
8834: if (defined(&domain($udom,'primary'))) {
8835: $course_server = &domain($udom,'primary');
8836: } else {
8837: $course_server = $env{'user.home'};
8838: }
8839: }
8840: my %host_servers =
8841: &Apache::lonnet::get_servers($udom,'library');
8842: unless ($host_servers{$course_server}) {
8843: return 'error: invalid home server for course: '.$course_server;
8844: }
8845: # ------------------------------------------------------------- Make the course
8846: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8847: $course_server);
8848: unless ($reply eq 'ok') { return 'error: '.$reply; }
8849: my $uhome=&homeserver($uname,$udom,'true');
8850: if (($uhome eq '') || ($uhome eq 'no_host')) {
8851: return 'error: no such course';
8852: }
8853: # ----------------------------------------------------------------- Course made
8854: # log existence
8855: my $now = time;
8856: my $newcourse = {
8857: $udom.'_'.$uname => {
8858: description => $description,
8859: inst_code => $inst_code,
8860: owner => $course_owner,
8861: type => $crstype,
8862: creator => $env{'user.name'}.':'.
8863: $env{'user.domain'},
8864: created => $now,
8865: context => $context,
8866: },
8867: };
8868: &courseidput($udom,$newcourse,$uhome,'notime');
8869: # set toplevel url
8870: my $topurl=$url;
8871: unless ($nonstandard) {
8872: # ------------------------------------------ For standard courses, make top url
8873: my $mapurl=&clutter($url);
8874: if ($mapurl eq '/res/') { $mapurl=''; }
8875: $env{'form.initmap'}=(<<ENDINITMAP);
8876: <map>
8877: <resource id="1" type="start"></resource>
8878: <resource id="2" src="$mapurl"></resource>
8879: <resource id="3" type="finish"></resource>
8880: <link index="1" from="1" to="2"></link>
8881: <link index="2" from="2" to="3"></link>
8882: </map>
8883: ENDINITMAP
8884: $topurl=&declutter(
8885: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8886: );
8887: }
8888: # ----------------------------------------------------------- Write preferences
8889: &writecoursepref($udom.'_'.$uname,
8890: ('description' => $description,
8891: 'url' => $topurl,
8892: 'internal.creator' => $env{'user.name'}.':'.
8893: $env{'user.domain'},
8894: 'internal.created' => $now,
8895: 'internal.creationcontext' => $context)
8896: );
8897: return '/'.$udom.'/'.$uname;
8898: }
8899:
8900: # ------------------------------------------------------------------- Create ID
8901: sub generate_coursenum {
8902: my ($udom,$crstype) = @_;
8903: my $domdesc = &domain($udom);
8904: return 'error: invalid domain' if ($domdesc eq '');
8905: my $first;
8906: if ($crstype eq 'Community') {
8907: $first = '0';
8908: } else {
8909: $first = int(1+rand(9));
8910: }
8911: my $uname=$first.
8912: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8913: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8914: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8915: # ----------------------------------------------- Make sure that does not exist
8916: my $uhome=&homeserver($uname,$udom,'true');
8917: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8918: if ($crstype eq 'Community') {
8919: $first = '0';
8920: } else {
8921: $first = int(1+rand(9));
8922: }
8923: $uname=$first.
8924: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8925: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8926: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8927: $uhome=&homeserver($uname,$udom,'true');
8928: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8929: return 'error: unable to generate unique course-ID';
8930: }
8931: }
8932: return $uname;
8933: }
8934:
8935: sub is_course {
8936: my ($cdom, $cnum) = scalar(@_) == 1 ?
8937: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8938:
8939: return unless $cdom and $cnum;
8940:
8941: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8942: '.');
8943:
8944: return unless(exists($courses{$cdom.'_'.$cnum}));
8945: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8946: }
8947:
8948: sub store_userdata {
8949: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8950: my $result;
8951: if ($datakey ne '') {
8952: if (ref($storehash) eq 'HASH') {
8953: if ($udom eq '' || $uname eq '') {
8954: $udom = $env{'user.domain'};
8955: $uname = $env{'user.name'};
8956: }
8957: my $uhome=&homeserver($uname,$udom);
8958: if (($uhome eq '') || ($uhome eq 'no_host')) {
8959: $result = 'error: no_host';
8960: } else {
8961: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8962: $storehash->{'host'} = $perlvar{'lonHostID'};
8963:
8964: my $namevalue='';
8965: foreach my $key (keys(%{$storehash})) {
8966: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8967: }
8968: $namevalue=~s/\&$//;
8969: unless ($namespace eq 'courserequests') {
8970: $datakey = &escape($datakey);
8971: }
8972: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8973: $namevalue,$uhome);
8974: }
8975: } else {
8976: $result = 'error: data to store was not a hash reference';
8977: }
8978: } else {
8979: $result= 'error: invalid requestkey';
8980: }
8981: return $result;
8982: }
8983:
8984: # ---------------------------------------------------------- Assign Custom Role
8985:
8986: sub assigncustomrole {
8987: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8988: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8989: $end,$start,$deleteflag,$selfenroll,$context);
8990: }
8991:
8992: # ----------------------------------------------------------------- Revoke Role
8993:
8994: sub revokerole {
8995: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8996: my $now=time;
8997: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8998: }
8999:
9000: # ---------------------------------------------------------- Revoke Custom Role
9001:
9002: sub revokecustomrole {
9003: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9004: my $now=time;
9005: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9006: $deleteflag,$selfenroll,$context);
9007: }
9008:
9009: # ------------------------------------------------------------ Disk usage
9010: sub diskusage {
9011: my ($udom,$uname,$directorypath,$getpropath)=@_;
9012: $directorypath =~ s/\/$//;
9013: my $listing=&reply('du2:'.&escape($directorypath).':'
9014: .&escape($getpropath).':'.&escape($uname).':'
9015: .&escape($udom),homeserver($uname,$udom));
9016: if ($listing eq 'unknown_cmd') {
9017: if ($getpropath) {
9018: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9019: }
9020: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9021: }
9022: return $listing;
9023: }
9024:
9025: sub is_locked {
9026: my ($file_name, $domain, $user, $which) = @_;
9027: my @check;
9028: my $is_locked;
9029: push (@check,$file_name);
9030: my %locked = &get('file_permissions',\@check,
9031: $env{'user.domain'},$env{'user.name'});
9032: my ($tmp)=keys(%locked);
9033: if ($tmp=~/^error:/) { undef(%locked); }
9034:
9035: if (ref($locked{$file_name}) eq 'ARRAY') {
9036: $is_locked = 'false';
9037: foreach my $entry (@{$locked{$file_name}}) {
9038: if (ref($entry) eq 'ARRAY') {
9039: $is_locked = 'true';
9040: if (ref($which) eq 'ARRAY') {
9041: push(@{$which},$entry);
9042: } else {
9043: last;
9044: }
9045: }
9046: }
9047: } else {
9048: $is_locked = 'false';
9049: }
9050: return $is_locked;
9051: }
9052:
9053: sub declutter_portfile {
9054: my ($file) = @_;
9055: $file =~ s{^(/portfolio/|portfolio/)}{/};
9056: return $file;
9057: }
9058:
9059: # ------------------------------------------------------------- Mark as Read Only
9060:
9061: sub mark_as_readonly {
9062: my ($domain,$user,$files,$what) = @_;
9063: my %current_permissions = &dump('file_permissions',$domain,$user);
9064: my ($tmp)=keys(%current_permissions);
9065: if ($tmp=~/^error:/) { undef(%current_permissions); }
9066: foreach my $file (@{$files}) {
9067: $file = &declutter_portfile($file);
9068: push(@{$current_permissions{$file}},$what);
9069: }
9070: &put('file_permissions',\%current_permissions,$domain,$user);
9071: return;
9072: }
9073:
9074: # ------------------------------------------------------------Save Selected Files
9075:
9076: sub save_selected_files {
9077: my ($user, $path, @files) = @_;
9078: my $filename = $user."savedfiles";
9079: my @other_files = &files_not_in_path($user, $path);
9080: open (OUT, '>'.$tmpdir.$filename);
9081: foreach my $file (@files) {
9082: print (OUT $env{'form.currentpath'}.$file."\n");
9083: }
9084: foreach my $file (@other_files) {
9085: print (OUT $file."\n");
9086: }
9087: close (OUT);
9088: return 'ok';
9089: }
9090:
9091: sub clear_selected_files {
9092: my ($user) = @_;
9093: my $filename = $user."savedfiles";
9094: open (OUT, '>'.LONCAPA::tempdir().$filename);
9095: print (OUT undef);
9096: close (OUT);
9097: return ("ok");
9098: }
9099:
9100: sub files_in_path {
9101: my ($user, $path) = @_;
9102: my $filename = $user."savedfiles";
9103: my %return_files;
9104: open (IN, '<'.LONCAPA::tempdir().$filename);
9105: while (my $line_in = <IN>) {
9106: chomp ($line_in);
9107: my @paths_and_file = split (m!/!, $line_in);
9108: my $file_part = pop (@paths_and_file);
9109: my $path_part = join ('/', @paths_and_file);
9110: $path_part.='/';
9111: my $path_and_file = $path_part.$file_part;
9112: if ($path_part eq $path) {
9113: $return_files{$file_part}= 'selected';
9114: }
9115: }
9116: close (IN);
9117: return (\%return_files);
9118: }
9119:
9120: # called in portfolio select mode, to show files selected NOT in current directory
9121: sub files_not_in_path {
9122: my ($user, $path) = @_;
9123: my $filename = $user."savedfiles";
9124: my @return_files;
9125: my $path_part;
9126: open(IN, '<'.LONCAPA::.$filename);
9127: while (my $line = <IN>) {
9128: #ok, I know it's clunky, but I want it to work
9129: my @paths_and_file = split(m|/|, $line);
9130: my $file_part = pop(@paths_and_file);
9131: chomp($file_part);
9132: my $path_part = join('/', @paths_and_file);
9133: $path_part .= '/';
9134: my $path_and_file = $path_part.$file_part;
9135: if ($path_part ne $path) {
9136: push(@return_files, ($path_and_file));
9137: }
9138: }
9139: close(OUT);
9140: return (@return_files);
9141: }
9142:
9143: #----------------------------------------------Get portfolio file permissions
9144:
9145: sub get_portfile_permissions {
9146: my ($domain,$user) = @_;
9147: my %current_permissions = &dump('file_permissions',$domain,$user);
9148: my ($tmp)=keys(%current_permissions);
9149: if ($tmp=~/^error:/) { undef(%current_permissions); }
9150: return \%current_permissions;
9151: }
9152:
9153: #---------------------------------------------Get portfolio file access controls
9154:
9155: sub get_access_controls {
9156: my ($current_permissions,$group,$file) = @_;
9157: my %access;
9158: my $real_file = $file;
9159: $file =~ s/\.meta$//;
9160: if (defined($file)) {
9161: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9162: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9163: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9164: }
9165: }
9166: } else {
9167: foreach my $key (keys(%{$current_permissions})) {
9168: if ($key =~ /\0accesscontrol$/) {
9169: if (defined($group)) {
9170: if ($key !~ m-^\Q$group\E/-) {
9171: next;
9172: }
9173: }
9174: my ($fullpath) = split(/\0/,$key);
9175: if (ref($$current_permissions{$key}) eq 'HASH') {
9176: foreach my $control (keys(%{$$current_permissions{$key}})) {
9177: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9178: }
9179: }
9180: }
9181: }
9182: }
9183: return %access;
9184: }
9185:
9186: sub modify_access_controls {
9187: my ($file_name,$changes,$domain,$user)=@_;
9188: my ($outcome,$deloutcome);
9189: my %store_permissions;
9190: my %new_values;
9191: my %new_control;
9192: my %translation;
9193: my @deletions = ();
9194: my $now = time;
9195: if (exists($$changes{'activate'})) {
9196: if (ref($$changes{'activate'}) eq 'HASH') {
9197: my @newitems = sort(keys(%{$$changes{'activate'}}));
9198: my $numnew = scalar(@newitems);
9199: for (my $i=0; $i<$numnew; $i++) {
9200: my $newkey = $newitems[$i];
9201: my $newid = &Apache::loncommon::get_cgi_id();
9202: if ($newkey =~ /^\d+:/) {
9203: $newkey =~ s/^(\d+)/$newid/;
9204: $translation{$1} = $newid;
9205: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9206: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9207: $translation{$1} = $newid;
9208: }
9209: $new_values{$file_name."\0".$newkey} =
9210: $$changes{'activate'}{$newitems[$i]};
9211: $new_control{$newkey} = $now;
9212: }
9213: }
9214: }
9215: my %todelete;
9216: my %changed_items;
9217: foreach my $action ('delete','update') {
9218: if (exists($$changes{$action})) {
9219: if (ref($$changes{$action}) eq 'HASH') {
9220: foreach my $key (keys(%{$$changes{$action}})) {
9221: my ($itemnum) = ($key =~ /^([^:]+):/);
9222: if ($action eq 'delete') {
9223: $todelete{$itemnum} = 1;
9224: } else {
9225: $changed_items{$itemnum} = $key;
9226: }
9227: }
9228: }
9229: }
9230: }
9231: # get lock on access controls for file.
9232: my $lockhash = {
9233: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9234: ':'.$env{'user.domain'},
9235: };
9236: my $tries = 0;
9237: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9238:
9239: while (($gotlock ne 'ok') && $tries <3) {
9240: $tries ++;
9241: sleep 1;
9242: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9243: }
9244: if ($gotlock eq 'ok') {
9245: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9246: my ($tmp)=keys(%curr_permissions);
9247: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9248: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9249: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9250: if (ref($curr_controls) eq 'HASH') {
9251: foreach my $control_item (keys(%{$curr_controls})) {
9252: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9253: if (defined($todelete{$itemnum})) {
9254: push(@deletions,$file_name."\0".$control_item);
9255: } else {
9256: if (defined($changed_items{$itemnum})) {
9257: $new_control{$changed_items{$itemnum}} = $now;
9258: push(@deletions,$file_name."\0".$control_item);
9259: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9260: } else {
9261: $new_control{$control_item} = $$curr_controls{$control_item};
9262: }
9263: }
9264: }
9265: }
9266: }
9267: my ($group);
9268: if (&is_course($domain,$user)) {
9269: ($group,my $file) = split(/\//,$file_name,2);
9270: }
9271: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9272: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9273: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9274: # remove lock
9275: my @del_lock = ($file_name."\0".'locked_access_records');
9276: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9277: my $sqlresult =
9278: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9279: $group);
9280: } else {
9281: $outcome = "error: could not obtain lockfile\n";
9282: }
9283: return ($outcome,$deloutcome,\%new_values,\%translation);
9284: }
9285:
9286: sub make_public_indefinitely {
9287: my ($requrl) = @_;
9288: my $now = time;
9289: my $action = 'activate';
9290: my $aclnum = 0;
9291: if (&is_portfolio_url($requrl)) {
9292: my (undef,$udom,$unum,$file_name,$group) =
9293: &parse_portfolio_url($requrl);
9294: my $current_perms = &get_portfile_permissions($udom,$unum);
9295: my %access_controls = &get_access_controls($current_perms,
9296: $group,$file_name);
9297: foreach my $key (keys(%{$access_controls{$file_name}})) {
9298: my ($num,$scope,$end,$start) =
9299: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9300: if ($scope eq 'public') {
9301: if ($start <= $now && $end == 0) {
9302: $action = 'none';
9303: } else {
9304: $action = 'update';
9305: $aclnum = $num;
9306: }
9307: last;
9308: }
9309: }
9310: if ($action eq 'none') {
9311: return 'ok';
9312: } else {
9313: my %changes;
9314: my $newend = 0;
9315: my $newstart = $now;
9316: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9317: $changes{$action}{$newkey} = {
9318: type => 'public',
9319: time => {
9320: start => $newstart,
9321: end => $newend,
9322: },
9323: };
9324: my ($outcome,$deloutcome,$new_values,$translation) =
9325: &modify_access_controls($file_name,\%changes,$udom,$unum);
9326: return $outcome;
9327: }
9328: } else {
9329: return 'invalid';
9330: }
9331: }
9332:
9333: #------------------------------------------------------Get Marked as Read Only
9334:
9335: sub get_marked_as_readonly {
9336: my ($domain,$user,$what,$group) = @_;
9337: my $current_permissions = &get_portfile_permissions($domain,$user);
9338: my @readonly_files;
9339: my $cmp1=$what;
9340: if (ref($what)) { $cmp1=join('',@{$what}) };
9341: while (my ($file_name,$value) = each(%{$current_permissions})) {
9342: if (defined($group)) {
9343: if ($file_name !~ m-^\Q$group\E/-) {
9344: next;
9345: }
9346: }
9347: if (ref($value) eq "ARRAY"){
9348: foreach my $stored_what (@{$value}) {
9349: my $cmp2=$stored_what;
9350: if (ref($stored_what) eq 'ARRAY') {
9351: $cmp2=join('',@{$stored_what});
9352: }
9353: if ($cmp1 eq $cmp2) {
9354: push(@readonly_files, $file_name);
9355: last;
9356: } elsif (!defined($what)) {
9357: push(@readonly_files, $file_name);
9358: last;
9359: }
9360: }
9361: }
9362: }
9363: return @readonly_files;
9364: }
9365: #-----------------------------------------------------------Get Marked as Read Only Hash
9366:
9367: sub get_marked_as_readonly_hash {
9368: my ($current_permissions,$group,$what) = @_;
9369: my %readonly_files;
9370: while (my ($file_name,$value) = each(%{$current_permissions})) {
9371: if (defined($group)) {
9372: if ($file_name !~ m-^\Q$group\E/-) {
9373: next;
9374: }
9375: }
9376: if (ref($value) eq "ARRAY"){
9377: foreach my $stored_what (@{$value}) {
9378: if (ref($stored_what) eq 'ARRAY') {
9379: foreach my $lock_descriptor(@{$stored_what}) {
9380: if ($lock_descriptor eq 'graded') {
9381: $readonly_files{$file_name} = 'graded';
9382: } elsif ($lock_descriptor eq 'handback') {
9383: $readonly_files{$file_name} = 'handback';
9384: } else {
9385: if (!exists($readonly_files{$file_name})) {
9386: $readonly_files{$file_name} = 'locked';
9387: }
9388: }
9389: }
9390: }
9391: }
9392: }
9393: }
9394: return %readonly_files;
9395: }
9396: # ------------------------------------------------------------ Unmark as Read Only
9397:
9398: sub unmark_as_readonly {
9399: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9400: # for portfolio submissions, $what contains [$symb,$crsid]
9401: my ($domain,$user,$what,$file_name,$group) = @_;
9402: $file_name = &declutter_portfile($file_name);
9403: my $symb_crs = $what;
9404: if (ref($what)) { $symb_crs=join('',@$what); }
9405: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9406: my ($tmp)=keys(%current_permissions);
9407: if ($tmp=~/^error:/) { undef(%current_permissions); }
9408: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9409: foreach my $file (@readonly_files) {
9410: my $clean_file = &declutter_portfile($file);
9411: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9412: my $current_locks = $current_permissions{$file};
9413: my @new_locks;
9414: my @del_keys;
9415: if (ref($current_locks) eq "ARRAY"){
9416: foreach my $locker (@{$current_locks}) {
9417: my $compare=$locker;
9418: if (ref($locker) eq 'ARRAY') {
9419: $compare=join('',@{$locker});
9420: if ($compare ne $symb_crs) {
9421: push(@new_locks, $locker);
9422: }
9423: }
9424: }
9425: if (scalar(@new_locks) > 0) {
9426: $current_permissions{$file} = \@new_locks;
9427: } else {
9428: push(@del_keys, $file);
9429: &del('file_permissions',\@del_keys, $domain, $user);
9430: delete($current_permissions{$file});
9431: }
9432: }
9433: }
9434: &put('file_permissions',\%current_permissions,$domain,$user);
9435: return;
9436: }
9437:
9438: # ------------------------------------------------------------ Directory lister
9439:
9440: sub dirlist {
9441: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9442: $uri=~s/^\///;
9443: $uri=~s/\/$//;
9444: my ($udom, $uname);
9445: if ($getuserdir) {
9446: $udom = $userdomain;
9447: $uname = $username;
9448: } else {
9449: (undef,$udom,$uname)=split(/\//,$uri);
9450: if(defined($userdomain)) {
9451: $udom = $userdomain;
9452: }
9453: if(defined($username)) {
9454: $uname = $username;
9455: }
9456: }
9457: my ($dirRoot,$listing,@listing_results);
9458:
9459: $dirRoot = $perlvar{'lonDocRoot'};
9460: if (defined($getpropath)) {
9461: $dirRoot = &propath($udom,$uname);
9462: $dirRoot =~ s/\/$//;
9463: } elsif (defined($getuserdir)) {
9464: my $subdir=$uname.'__';
9465: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9466: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9467: ."/$udom/$subdir/$uname";
9468: } elsif (defined($alternateRoot)) {
9469: $dirRoot = $alternateRoot;
9470: }
9471:
9472: if($udom) {
9473: if($uname) {
9474: my $uhome = &homeserver($uname,$udom);
9475: if ($uhome eq 'no_host') {
9476: return ([],'no_host');
9477: }
9478: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9479: .$getuserdir.':'.&escape($dirRoot)
9480: .':'.&escape($uname).':'.&escape($udom),$uhome);
9481: if ($listing eq 'unknown_cmd') {
9482: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9483: } else {
9484: @listing_results = map { &unescape($_); } split(/:/,$listing);
9485: }
9486: if ($listing eq 'unknown_cmd') {
9487: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9488: @listing_results = split(/:/,$listing);
9489: } else {
9490: @listing_results = map { &unescape($_); } split(/:/,$listing);
9491: }
9492: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9493: ($listing eq 'rejected') || ($listing eq 'refused') ||
9494: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9495: return ([],$listing);
9496: } else {
9497: return (\@listing_results);
9498: }
9499: } elsif(!$alternateRoot) {
9500: my (%allusers,%listerror);
9501: my %servers = &get_servers($udom,'library');
9502: foreach my $tryserver (keys(%servers)) {
9503: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9504: &escape($udom),$tryserver);
9505: if ($listing eq 'unknown_cmd') {
9506: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9507: $udom, $tryserver);
9508: } else {
9509: @listing_results = map { &unescape($_); } split(/:/,$listing);
9510: }
9511: if ($listing eq 'unknown_cmd') {
9512: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9513: $udom, $tryserver);
9514: @listing_results = split(/:/,$listing);
9515: } else {
9516: @listing_results =
9517: map { &unescape($_); } split(/:/,$listing);
9518: }
9519: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9520: ($listing eq 'rejected') || ($listing eq 'refused') ||
9521: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9522: $listerror{$tryserver} = $listing;
9523: } else {
9524: foreach my $line (@listing_results) {
9525: my ($entry) = split(/&/,$line,2);
9526: $allusers{$entry} = 1;
9527: }
9528: }
9529: }
9530: my @alluserslist=();
9531: foreach my $user (sort(keys(%allusers))) {
9532: push(@alluserslist,$user.'&user');
9533: }
9534: return (\@alluserslist);
9535: } else {
9536: return ([],'missing username');
9537: }
9538: } elsif(!defined($getpropath)) {
9539: my $path = $perlvar{'lonDocRoot'}.'/res/';
9540: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9541: return (\@all_domains);
9542: } else {
9543: return ([],'missing domain');
9544: }
9545: }
9546:
9547: # --------------------------------------------- GetFileTimestamp
9548: # This function utilizes dirlist and returns the date stamp for
9549: # when it was last modified. It will also return an error of -1
9550: # if an error occurs
9551:
9552: sub GetFileTimestamp {
9553: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9554: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9555: $studentName = &LONCAPA::clean_username($studentName);
9556: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9557: undef,$getuserdir);
9558: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9559: return -1;
9560: }
9561: if (ref($fileref) eq 'ARRAY') {
9562: my @stats = split('&',$fileref->[0]);
9563: # @stats contains first the filename, then the stat output
9564: return $stats[10]; # so this is 10 instead of 9.
9565: } else {
9566: return -1;
9567: }
9568: }
9569:
9570: sub stat_file {
9571: my ($uri) = @_;
9572: $uri = &clutter_with_no_wrapper($uri);
9573:
9574: my ($udom,$uname,$file);
9575: if ($uri =~ m-^/(uploaded|editupload)/-) {
9576: ($udom,$uname,$file) =
9577: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9578: $file = 'userfiles/'.$file;
9579: }
9580: if ($uri =~ m-^/res/-) {
9581: ($udom,$uname) =
9582: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9583: $file = $uri;
9584: }
9585:
9586: if (!$udom || !$uname || !$file) {
9587: # unable to handle the uri
9588: return ();
9589: }
9590: my $getpropath;
9591: if ($file =~ /^userfiles\//) {
9592: $getpropath = 1;
9593: }
9594: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9595: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9596: return ();
9597: } else {
9598: if (ref($listref) eq 'ARRAY') {
9599: my @stats = split('&',$listref->[0]);
9600: shift(@stats); #filename is first
9601: return @stats;
9602: }
9603: }
9604: return ();
9605: }
9606:
9607: # -------------------------------------------------------- Value of a Condition
9608:
9609: # gets the value of a specific preevaluated condition
9610: # stored in the string $env{user.state.<cid>}
9611: # or looks up a condition reference in the bighash and if if hasn't
9612: # already been evaluated recurses into docondval to get the value of
9613: # the condition, then memoizing it to
9614: # $env{user.state.<cid>.<condition>}
9615: sub directcondval {
9616: my $number=shift;
9617: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9618: &Apache::lonuserstate::evalstate();
9619: }
9620: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9621: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9622: } elsif ($number =~ /^_/) {
9623: my $sub_condition;
9624: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9625: &GDBM_READER(),0640)) {
9626: $sub_condition=$bighash{'conditions'.$number};
9627: untie(%bighash);
9628: }
9629: my $value = &docondval($sub_condition);
9630: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9631: return $value;
9632: }
9633: if ($env{'user.state.'.$env{'request.course.id'}}) {
9634: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9635: } else {
9636: return 2;
9637: }
9638: }
9639:
9640: # get the collection of conditions for this resource
9641: sub condval {
9642: my $condidx=shift;
9643: my $allpathcond='';
9644: foreach my $cond (split(/\|/,$condidx)) {
9645: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9646: $allpathcond.=
9647: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9648: }
9649: }
9650: $allpathcond=~s/\|$//;
9651: return &docondval($allpathcond);
9652: }
9653:
9654: #evaluates an expression of conditions
9655: sub docondval {
9656: my ($allpathcond) = @_;
9657: my $result=0;
9658: if ($env{'request.course.id'}
9659: && defined($allpathcond)) {
9660: my $operand='|';
9661: my @stack;
9662: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9663: if ($chunk eq '(') {
9664: push @stack,($operand,$result);
9665: } elsif ($chunk eq ')') {
9666: my $before=pop @stack;
9667: if (pop @stack eq '&') {
9668: $result=$result>$before?$before:$result;
9669: } else {
9670: $result=$result>$before?$result:$before;
9671: }
9672: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9673: $operand=$chunk;
9674: } else {
9675: my $new=directcondval($chunk);
9676: if ($operand eq '&') {
9677: $result=$result>$new?$new:$result;
9678: } else {
9679: $result=$result>$new?$result:$new;
9680: }
9681: }
9682: }
9683: }
9684: return $result;
9685: }
9686:
9687: # ---------------------------------------------------- Devalidate courseresdata
9688:
9689: sub devalidatecourseresdata {
9690: my ($coursenum,$coursedomain)=@_;
9691: my $hashid=$coursenum.':'.$coursedomain;
9692: &devalidate_cache_new('courseres',$hashid);
9693: }
9694:
9695:
9696: # --------------------------------------------------- Course Resourcedata Query
9697: #
9698: # Parameters:
9699: # $coursenum - Number of the course.
9700: # $coursedomain - Domain at which the course was created.
9701: # Returns:
9702: # A hash of the course parameters along (I think) with timestamps
9703: # and version info.
9704:
9705: sub get_courseresdata {
9706: my ($coursenum,$coursedomain)=@_;
9707: my $coursehom=&homeserver($coursenum,$coursedomain);
9708: my $hashid=$coursenum.':'.$coursedomain;
9709: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9710: my %dumpreply;
9711: unless (defined($cached)) {
9712: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9713: $result=\%dumpreply;
9714: my ($tmp) = keys(%dumpreply);
9715: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9716: &do_cache_new('courseres',$hashid,$result,600);
9717: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9718: return $tmp;
9719: } elsif ($tmp =~ /^(error)/) {
9720: $result=undef;
9721: &do_cache_new('courseres',$hashid,$result,600);
9722: }
9723: }
9724: return $result;
9725: }
9726:
9727: sub devalidateuserresdata {
9728: my ($uname,$udom)=@_;
9729: my $hashid="$udom:$uname";
9730: &devalidate_cache_new('userres',$hashid);
9731: }
9732:
9733: sub get_userresdata {
9734: my ($uname,$udom)=@_;
9735: #most student don\'t have any data set, check if there is some data
9736: if (&EXT_cache_status($udom,$uname)) { return undef; }
9737:
9738: my $hashid="$udom:$uname";
9739: my ($result,$cached)=&is_cached_new('userres',$hashid);
9740: if (!defined($cached)) {
9741: my %resourcedata=&dump('resourcedata',$udom,$uname);
9742: $result=\%resourcedata;
9743: &do_cache_new('userres',$hashid,$result,600);
9744: }
9745: my ($tmp)=keys(%$result);
9746: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9747: return $result;
9748: }
9749: #error 2 occurs when the .db doesn't exist
9750: if ($tmp!~/error: 2 /) {
9751: &logthis("<font color=\"blue\">WARNING:".
9752: " Trying to get resource data for ".
9753: $uname." at ".$udom.": ".
9754: $tmp."</font>");
9755: } elsif ($tmp=~/error: 2 /) {
9756: #&EXT_cache_set($udom,$uname);
9757: &do_cache_new('userres',$hashid,undef,600);
9758: undef($tmp); # not really an error so don't send it back
9759: }
9760: return $tmp;
9761: }
9762: #----------------------------------------------- resdata - return resource data
9763: # Purpose:
9764: # Return resource data for either users or for a course.
9765: # Parameters:
9766: # $name - Course/user name.
9767: # $domain - Name of the domain the user/course is registered on.
9768: # $type - Type of thing $name is (must be 'course' or 'user'
9769: # @which - Array of names of resources desired.
9770: # Returns:
9771: # The value of the first reasource in @which that is found in the
9772: # resource hash.
9773: # Exceptional Conditions:
9774: # If the $type passed in is not valid (not the string 'course' or
9775: # 'user', an undefined reference is returned.
9776: # If none of the resources are found, an undef is returned
9777: sub resdata {
9778: my ($name,$domain,$type,@which)=@_;
9779: my $result;
9780: if ($type eq 'course') {
9781: $result=&get_courseresdata($name,$domain);
9782: } elsif ($type eq 'user') {
9783: $result=&get_userresdata($name,$domain);
9784: }
9785: if (!ref($result)) { return $result; }
9786: foreach my $item (@which) {
9787: if (defined($result->{$item->[0]})) {
9788: return [$result->{$item->[0]},$item->[1]];
9789: }
9790: }
9791: return undef;
9792: }
9793:
9794: sub get_numsuppfiles {
9795: my ($cnum,$cdom,$ignorecache)=@_;
9796: my $hashid=$cnum.':'.$cdom;
9797: my ($suppcount,$cached);
9798: unless ($ignorecache) {
9799: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
9800: }
9801: unless (defined($cached)) {
9802: my $chome=&homeserver($cnum,$cdom);
9803: unless ($chome eq 'no_host') {
9804: ($suppcount,my $errors) = (0,0);
9805: my $suppmap = 'supplemental.sequence';
9806: ($suppcount,$errors) =
9807: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
9808: }
9809: &do_cache_new('suppcount',$hashid,$suppcount,600);
9810: }
9811: return $suppcount;
9812: }
9813:
9814: #
9815: # EXT resource caching routines
9816: #
9817:
9818: sub clear_EXT_cache_status {
9819: &delenv('cache.EXT.');
9820: }
9821:
9822: sub EXT_cache_status {
9823: my ($target_domain,$target_user) = @_;
9824: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9825: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9826: # We know already the user has no data
9827: return 1;
9828: } else {
9829: return 0;
9830: }
9831: }
9832:
9833: sub EXT_cache_set {
9834: my ($target_domain,$target_user) = @_;
9835: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9836: #&appenv({$cachename => time});
9837: }
9838:
9839: # --------------------------------------------------------- Value of a Variable
9840: sub EXT {
9841:
9842: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
9843: unless ($varname) { return ''; }
9844: #get real user name/domain, courseid and symb
9845: my $courseid;
9846: my $publicuser;
9847: if ($symbparm) {
9848: $symbparm=&get_symb_from_alias($symbparm);
9849: }
9850: if (!($uname && $udom)) {
9851: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9852: if (!$symbparm) { $symbparm=$cursymb; }
9853: } else {
9854: $courseid=$env{'request.course.id'};
9855: }
9856: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9857: my $rest;
9858: if (defined($therest[0])) {
9859: $rest=join('.',@therest);
9860: } else {
9861: $rest='';
9862: }
9863:
9864: my $qualifierrest=$qualifier;
9865: if ($rest) { $qualifierrest.='.'.$rest; }
9866: my $spacequalifierrest=$space;
9867: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9868: if ($realm eq 'user') {
9869: # --------------------------------------------------------------- user.resource
9870: if ($space eq 'resource') {
9871: if ( (defined($Apache::lonhomework::parsing_a_problem)
9872: || defined($Apache::lonhomework::parsing_a_task))
9873: &&
9874: ($symbparm eq &symbread()) ) {
9875: # if we are in the middle of processing the resource the
9876: # get the value we are planning on committing
9877: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9878: return $Apache::lonhomework::results{$qualifierrest};
9879: } else {
9880: return $Apache::lonhomework::history{$qualifierrest};
9881: }
9882: } else {
9883: my %restored;
9884: if ($publicuser || $env{'request.state'} eq 'construct') {
9885: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9886: } else {
9887: %restored=&restore($symbparm,$courseid,$udom,$uname);
9888: }
9889: return $restored{$qualifierrest};
9890: }
9891: # ----------------------------------------------------------------- user.access
9892: } elsif ($space eq 'access') {
9893: # FIXME - not supporting calls for a specific user
9894: return &allowed($qualifier,$rest);
9895: # ------------------------------------------ user.preferences, user.environment
9896: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9897: if (($uname eq $env{'user.name'}) &&
9898: ($udom eq $env{'user.domain'})) {
9899: return $env{join('.',('environment',$qualifierrest))};
9900: } else {
9901: my %returnhash;
9902: if (!$publicuser) {
9903: %returnhash=&userenvironment($udom,$uname,
9904: $qualifierrest);
9905: }
9906: return $returnhash{$qualifierrest};
9907: }
9908: # ----------------------------------------------------------------- user.course
9909: } elsif ($space eq 'course') {
9910: # FIXME - not supporting calls for a specific user
9911: return $env{join('.',('request.course',$qualifier))};
9912: # ------------------------------------------------------------------- user.role
9913: } elsif ($space eq 'role') {
9914: # FIXME - not supporting calls for a specific user
9915: my ($role,$where)=split(/\./,$env{'request.role'});
9916: if ($qualifier eq 'value') {
9917: return $role;
9918: } elsif ($qualifier eq 'extent') {
9919: return $where;
9920: }
9921: # ----------------------------------------------------------------- user.domain
9922: } elsif ($space eq 'domain') {
9923: return $udom;
9924: # ------------------------------------------------------------------- user.name
9925: } elsif ($space eq 'name') {
9926: return $uname;
9927: # ---------------------------------------------------- Any other user namespace
9928: } else {
9929: my %reply;
9930: if (!$publicuser) {
9931: %reply=&get($space,[$qualifierrest],$udom,$uname);
9932: }
9933: return $reply{$qualifierrest};
9934: }
9935: } elsif ($realm eq 'query') {
9936: # ---------------------------------------------- pull stuff out of query string
9937: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9938: [$spacequalifierrest]);
9939: return $env{'form.'.$spacequalifierrest};
9940: } elsif ($realm eq 'request') {
9941: # ------------------------------------------------------------- request.browser
9942: if ($space eq 'browser') {
9943: return $env{'browser.'.$qualifier};
9944: # ------------------------------------------------------------ request.filename
9945: } else {
9946: return $env{'request.'.$spacequalifierrest};
9947: }
9948: } elsif ($realm eq 'course') {
9949: # ---------------------------------------------------------- course.description
9950: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9951: } elsif ($realm eq 'resource') {
9952:
9953: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9954: if (!$symbparm) { $symbparm=&symbread(); }
9955: }
9956:
9957: if ($qualifier eq '') {
9958: if ($space eq 'title') {
9959: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9960: return &gettitle($symbparm);
9961: }
9962:
9963: if ($space eq 'map') {
9964: my ($map) = &decode_symb($symbparm);
9965: return &symbread($map);
9966: }
9967: if ($space eq 'maptitle') {
9968: my ($map) = &decode_symb($symbparm);
9969: return &gettitle($map);
9970: }
9971: if ($space eq 'filename') {
9972: if ($symbparm) {
9973: return &clutter((&decode_symb($symbparm))[2]);
9974: }
9975: return &hreflocation('',$env{'request.filename'});
9976: }
9977:
9978: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
9979: if ($space eq 'visibleparts') {
9980: my $navmap = Apache::lonnavmaps::navmap->new();
9981: my $item;
9982: if (ref($navmap)) {
9983: my $res = $navmap->getBySymb($symbparm);
9984: my $parts = $res->parts();
9985: if (ref($parts) eq 'ARRAY') {
9986: $item = join(',',@{$parts});
9987: }
9988: undef($navmap);
9989: }
9990: return $item;
9991: }
9992: }
9993: }
9994:
9995: my ($section, $group, @groups);
9996: my ($courselevelm,$courselevel);
9997: if (($courseid eq '') && ($cid)) {
9998: $courseid = $cid;
9999: }
10000: if (($symbparm && $courseid) &&
10001: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10002:
10003: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10004:
10005: # ----------------------------------------------------- Cascading lookup scheme
10006: my $symbp=$symbparm;
10007: my $mapp=&deversion((&decode_symb($symbp))[0]);
10008:
10009: my $symbparm=$symbp.'.'.$spacequalifierrest;
10010: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10011:
10012: if (($env{'user.name'} eq $uname) &&
10013: ($env{'user.domain'} eq $udom)) {
10014: $section=$env{'request.course.sec'};
10015: @groups = split(/:/,$env{'request.course.groups'});
10016: @groups=&sort_course_groups($courseid,@groups);
10017: } else {
10018: if (! defined($usection)) {
10019: $section=&getsection($udom,$uname,$courseid);
10020: } else {
10021: $section = $usection;
10022: }
10023: @groups = &get_users_groups($udom,$uname,$courseid);
10024: }
10025:
10026: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10027: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10028: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10029:
10030: $courselevel=$courseid.'.'.$spacequalifierrest;
10031: my $courselevelr=$courseid.'.'.$symbparm;
10032: $courselevelm=$courseid.'.'.$mapparm;
10033:
10034: # ----------------------------------------------------------- first, check user
10035:
10036: my $userreply=&resdata($uname,$udom,'user',
10037: ([$courselevelr,'resource'],
10038: [$courselevelm,'map' ],
10039: [$courselevel, 'course' ]));
10040: if (defined($userreply)) { return &get_reply($userreply); }
10041:
10042: # ------------------------------------------------ second, check some of course
10043: my $coursereply;
10044: if (@groups > 0) {
10045: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10046: $mapparm,$spacequalifierrest);
10047: if (defined($coursereply)) { return &get_reply($coursereply); }
10048: }
10049:
10050: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10051: $env{'course.'.$courseid.'.domain'},
10052: 'course',
10053: ([$seclevelr, 'resource'],
10054: [$seclevelm, 'map' ],
10055: [$seclevel, 'course' ],
10056: [$courselevelr,'resource']));
10057: if (defined($coursereply)) { return &get_reply($coursereply); }
10058:
10059: # ------------------------------------------------------ third, check map parms
10060: my %parmhash=();
10061: my $thisparm='';
10062: if (tie(%parmhash,'GDBM_File',
10063: $env{'request.course.fn'}.'_parms.db',
10064: &GDBM_READER(),0640)) {
10065: $thisparm=$parmhash{$symbparm};
10066: untie(%parmhash);
10067: }
10068: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10069: }
10070: # ------------------------------------------ fourth, look in resource metadata
10071:
10072: $spacequalifierrest=~s/\./\_/;
10073: my $filename;
10074: if (!$symbparm) { $symbparm=&symbread(); }
10075: if ($symbparm) {
10076: $filename=(&decode_symb($symbparm))[2];
10077: } else {
10078: $filename=$env{'request.filename'};
10079: }
10080: my $metadata=&metadata($filename,$spacequalifierrest);
10081: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10082: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
10083: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10084:
10085: # ---------------------------------------------- fourth, look in rest of course
10086: if ($symbparm && defined($courseid) &&
10087: $courseid eq $env{'request.course.id'}) {
10088: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10089: $env{'course.'.$courseid.'.domain'},
10090: 'course',
10091: ([$courselevelm,'map' ],
10092: [$courselevel, 'course']));
10093: if (defined($coursereply)) { return &get_reply($coursereply); }
10094: }
10095: # ------------------------------------------------------------------ Cascade up
10096: unless ($space eq '0') {
10097: my @parts=split(/_/,$space);
10098: my $id=pop(@parts);
10099: my $part=join('_',@parts);
10100: if ($part eq '') { $part='0'; }
10101: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10102: $symbparm,$udom,$uname,$section,1);
10103: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10104: }
10105: if ($recurse) { return undef; }
10106: my $pack_def=&packages_tab_default($filename,$varname);
10107: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10108: # ---------------------------------------------------- Any other user namespace
10109: } elsif ($realm eq 'environment') {
10110: # ----------------------------------------------------------------- environment
10111: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10112: return $env{'environment.'.$spacequalifierrest};
10113: } else {
10114: if ($uname eq 'anonymous' && $udom eq '') {
10115: return '';
10116: }
10117: my %returnhash=&userenvironment($udom,$uname,
10118: $spacequalifierrest);
10119: return $returnhash{$spacequalifierrest};
10120: }
10121: } elsif ($realm eq 'system') {
10122: # ----------------------------------------------------------------- system.time
10123: if ($space eq 'time') {
10124: return time;
10125: }
10126: } elsif ($realm eq 'server') {
10127: # ----------------------------------------------------------------- system.time
10128: if ($space eq 'name') {
10129: return $ENV{'SERVER_NAME'};
10130: }
10131: }
10132: return '';
10133: }
10134:
10135: sub get_reply {
10136: my ($reply_value) = @_;
10137: if (ref($reply_value) eq 'ARRAY') {
10138: if (wantarray) {
10139: return @$reply_value;
10140: }
10141: return $reply_value->[0];
10142: } else {
10143: return $reply_value;
10144: }
10145: }
10146:
10147: sub check_group_parms {
10148: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10149: my @groupitems = ();
10150: my $resultitem;
10151: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10152: foreach my $group (@{$groups}) {
10153: foreach my $level (@levels) {
10154: my $item = $courseid.'.['.$group.'].'.$level->[0];
10155: push(@groupitems,[$item,$level->[1]]);
10156: }
10157: }
10158: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10159: $env{'course.'.$courseid.'.domain'},
10160: 'course',@groupitems);
10161: return $coursereply;
10162: }
10163:
10164: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10165: my ($courseid,@groups) = @_;
10166: @groups = sort(@groups);
10167: return @groups;
10168: }
10169:
10170: sub packages_tab_default {
10171: my ($uri,$varname)=@_;
10172: my (undef,$part,$name)=split(/\./,$varname);
10173:
10174: my (@extension,@specifics,$do_default);
10175: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10176: my ($pack_type,$pack_part)=split(/_/,$package,2);
10177: if ($pack_type eq 'default') {
10178: $do_default=1;
10179: } elsif ($pack_type eq 'extension') {
10180: push(@extension,[$package,$pack_type,$pack_part]);
10181: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10182: # only look at packages defaults for packages that this id is
10183: push(@specifics,[$package,$pack_type,$pack_part]);
10184: }
10185: }
10186: # first look for a package that matches the requested part id
10187: foreach my $package (@specifics) {
10188: my (undef,$pack_type,$pack_part)=@{$package};
10189: next if ($pack_part ne $part);
10190: if (defined($packagetab{"$pack_type&$name&default"})) {
10191: return $packagetab{"$pack_type&$name&default"};
10192: }
10193: }
10194: # look for any possible matching non extension_ package
10195: foreach my $package (@specifics) {
10196: my (undef,$pack_type,$pack_part)=@{$package};
10197: if (defined($packagetab{"$pack_type&$name&default"})) {
10198: return $packagetab{"$pack_type&$name&default"};
10199: }
10200: if ($pack_type eq 'part') { $pack_part='0'; }
10201: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10202: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10203: }
10204: }
10205: # look for any posible extension_ match
10206: foreach my $package (@extension) {
10207: my ($package,$pack_type)=@{$package};
10208: if (defined($packagetab{"$pack_type&$name&default"})) {
10209: return $packagetab{"$pack_type&$name&default"};
10210: }
10211: if (defined($packagetab{$package."&$name&default"})) {
10212: return $packagetab{$package."&$name&default"};
10213: }
10214: }
10215: # look for a global default setting
10216: if ($do_default && defined($packagetab{"default&$name&default"})) {
10217: return $packagetab{"default&$name&default"};
10218: }
10219: return undef;
10220: }
10221:
10222: sub add_prefix_and_part {
10223: my ($prefix,$part)=@_;
10224: my $keyroot;
10225: if (defined($prefix) && $prefix !~ /^__/) {
10226: # prefix that has a part already
10227: $keyroot=$prefix;
10228: } elsif (defined($prefix)) {
10229: # prefix that is missing a part
10230: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10231: } else {
10232: # no prefix at all
10233: if (defined($part)) { $keyroot='_'.$part; }
10234: }
10235: return $keyroot;
10236: }
10237:
10238: # ---------------------------------------------------------------- Get metadata
10239:
10240: my %metaentry;
10241: my %importedpartids;
10242: sub metadata {
10243: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10244: $uri=&declutter($uri);
10245: # if it is a non metadata possible uri return quickly
10246: if (($uri eq '') ||
10247: (($uri =~ m|^/*adm/|) &&
10248: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10249: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10250: return undef;
10251: }
10252: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10253: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10254: return undef;
10255: }
10256: my $filename=$uri;
10257: $uri=~s/\.meta$//;
10258: #
10259: # Is the metadata already cached?
10260: # Look at timestamp of caching
10261: # Everything is cached by the main uri, libraries are never directly cached
10262: #
10263: if (!defined($liburi)) {
10264: my ($result,$cached)=&is_cached_new('meta',$uri);
10265: if (defined($cached)) { return $result->{':'.$what}; }
10266: }
10267: {
10268: # Imported parts would go here
10269: my %importedids=();
10270: my @origfileimportpartids=();
10271: my $importedparts=0;
10272: #
10273: # Is this a recursive call for a library?
10274: #
10275: # if (! exists($metacache{$uri})) {
10276: # $metacache{$uri}={};
10277: # }
10278: my $cachetime = 60*60;
10279: if ($liburi) {
10280: $liburi=&declutter($liburi);
10281: $filename=$liburi;
10282: } else {
10283: &devalidate_cache_new('meta',$uri);
10284: undef(%metaentry);
10285: }
10286: my %metathesekeys=();
10287: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10288: my $metastring;
10289: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10290: my $which = &hreflocation('','/'.($liburi || $uri));
10291: $metastring =
10292: &Apache::lonnet::ssi_body($which,
10293: ('grade_target' => 'meta'));
10294: $cachetime = 1; # only want this cached in the child not long term
10295: } elsif (($uri !~ m -^(editupload)/-) &&
10296: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10297: my $file=&filelocation('',&clutter($filename));
10298: #push(@{$metaentry{$uri.'.file'}},$file);
10299: $metastring=&getfile($file);
10300: }
10301: my $parser=HTML::LCParser->new(\$metastring);
10302: my $token;
10303: undef %metathesekeys;
10304: while ($token=$parser->get_token) {
10305: if ($token->[0] eq 'S') {
10306: if (defined($token->[2]->{'package'})) {
10307: #
10308: # This is a package - get package info
10309: #
10310: my $package=$token->[2]->{'package'};
10311: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10312: if (defined($token->[2]->{'id'})) {
10313: $keyroot.='_'.$token->[2]->{'id'};
10314: }
10315: if ($metaentry{':packages'}) {
10316: $metaentry{':packages'}.=','.$package.$keyroot;
10317: } else {
10318: $metaentry{':packages'}=$package.$keyroot;
10319: }
10320: foreach my $pack_entry (keys(%packagetab)) {
10321: my $part=$keyroot;
10322: $part=~s/^\_//;
10323: if ($pack_entry=~/^\Q$package\E\&/ ||
10324: $pack_entry=~/^\Q$package\E_0\&/) {
10325: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10326: # ignore package.tab specified default values
10327: # here &package_tab_default() will fetch those
10328: if ($subp eq 'default') { next; }
10329: my $value=$packagetab{$pack_entry};
10330: my $unikey;
10331: if ($pack =~ /_0$/) {
10332: $unikey='parameter_0_'.$name;
10333: $part=0;
10334: } else {
10335: $unikey='parameter'.$keyroot.'_'.$name;
10336: }
10337: if ($subp eq 'display') {
10338: $value.=' [Part: '.$part.']';
10339: }
10340: $metaentry{':'.$unikey.'.part'}=$part;
10341: $metathesekeys{$unikey}=1;
10342: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10343: $metaentry{':'.$unikey.'.'.$subp}=$value;
10344: }
10345: if (defined($metaentry{':'.$unikey.'.default'})) {
10346: $metaentry{':'.$unikey}=
10347: $metaentry{':'.$unikey.'.default'};
10348: }
10349: }
10350: }
10351: } else {
10352: #
10353: # This is not a package - some other kind of start tag
10354: #
10355: my $entry=$token->[1];
10356: my $unikey='';
10357:
10358: if ($entry eq 'import') {
10359: #
10360: # Importing a library here
10361: #
10362: my $location=$parser->get_text('/import');
10363: my $dir=$filename;
10364: $dir=~s|[^/]*$||;
10365: $location=&filelocation($dir,$location);
10366:
10367: my $importmode=$token->[2]->{'importmode'};
10368: if ($importmode eq 'problem') {
10369: # Import as problem/response
10370: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10371: } elsif ($importmode eq 'part') {
10372: # Import as part(s)
10373: $importedparts=1;
10374: # We need to get the original file and the imported file to get the part order correct
10375: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10376: # Load and inspect original file
10377: if ($#origfileimportpartids<0) {
10378: undef(%importedpartids);
10379: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10380: my $origfile=&getfile($origfilelocation);
10381: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10382: }
10383:
10384: # Load and inspect imported file
10385: my $impfile=&getfile($location);
10386: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10387: if ($#impfilepartids>=0) {
10388: # This problem had parts
10389: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10390: } else {
10391: # Importing by turning a single problem into a problem part
10392: # It gets the import-tags ID as part-ID
10393: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10394: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10395: }
10396: } else {
10397: # Normal import
10398: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10399: if (defined($token->[2]->{'id'})) {
10400: $unikey.='_'.$token->[2]->{'id'};
10401: }
10402: }
10403:
10404: if ($depthcount<20) {
10405: my $metadata =
10406: &metadata($uri,'keys', $location,$unikey,
10407: $depthcount+1);
10408: foreach my $meta (split(',',$metadata)) {
10409: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10410: $metathesekeys{$meta}=1;
10411: }
10412:
10413: }
10414: } else {
10415: #
10416: # Not importing, some other kind of non-package, non-library start tag
10417: #
10418: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10419: if (defined($token->[2]->{'id'})) {
10420: $unikey.='_'.$token->[2]->{'id'};
10421: }
10422: if (defined($token->[2]->{'name'})) {
10423: $unikey.='_'.$token->[2]->{'name'};
10424: }
10425: $metathesekeys{$unikey}=1;
10426: foreach my $param (@{$token->[3]}) {
10427: $metaentry{':'.$unikey.'.'.$param} =
10428: $token->[2]->{$param};
10429: }
10430: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10431: my $default=$metaentry{':'.$unikey.'.default'};
10432: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10433: # only ws inside the tag, and not in default, so use default
10434: # as value
10435: $metaentry{':'.$unikey}=$default;
10436: } elsif ( $internaltext =~ /\S/ ) {
10437: # something interesting inside the tag
10438: $metaentry{':'.$unikey}=$internaltext;
10439: } else {
10440: # no interesting values, don't set a default
10441: }
10442: # end of not-a-package not-a-library import
10443: }
10444: # end of not-a-package start tag
10445: }
10446: # the next is the end of "start tag"
10447: }
10448: }
10449: my ($extension) = ($uri =~ /\.(\w+)$/);
10450: $extension = lc($extension);
10451: if ($extension eq 'htm') { $extension='html'; }
10452:
10453: foreach my $key (keys(%packagetab)) {
10454: #no specific packages #how's our extension
10455: if ($key!~/^extension_\Q$extension\E&/) { next; }
10456: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10457: \%metathesekeys);
10458: }
10459:
10460: if (!exists($metaentry{':packages'})
10461: || $packagetab{"import_defaults&extension_$extension"}) {
10462: foreach my $key (keys(%packagetab)) {
10463: #no specific packages well let's get default then
10464: if ($key!~/^default&/) { next; }
10465: &metadata_create_package_def($uri,$key,'default',
10466: \%metathesekeys);
10467: }
10468: }
10469: # are there custom rights to evaluate
10470: if ($metaentry{':copyright'} eq 'custom') {
10471:
10472: #
10473: # Importing a rights file here
10474: #
10475: unless ($depthcount) {
10476: my $location=$metaentry{':customdistributionfile'};
10477: my $dir=$filename;
10478: $dir=~s|[^/]*$||;
10479: $location=&filelocation($dir,$location);
10480: my $rights_metadata =
10481: &metadata($uri,'keys',$location,'_rights',
10482: $depthcount+1);
10483: foreach my $rights (split(',',$rights_metadata)) {
10484: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10485: $metathesekeys{$rights}=1;
10486: }
10487: }
10488: }
10489: # uniqifiy package listing
10490: my %seen;
10491: my @uniq_packages =
10492: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10493: $metaentry{':packages'} = join(',',@uniq_packages);
10494:
10495: if ($importedparts) {
10496: # We had imported parts and need to rebuild partorder
10497: $metaentry{':partorder'}='';
10498: $metathesekeys{'partorder'}=1;
10499: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10500: if ($origfileimportpartids[$index] eq 'part') {
10501: # original part, part of the problem
10502: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10503: } else {
10504: # we have imported parts at this position
10505: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10506: }
10507: }
10508: $metaentry{':partorder'}=~s/^\,//;
10509: }
10510:
10511: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10512: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10513: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10514: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10515: # this is the end of "was not already recently cached
10516: }
10517: return $metaentry{':'.$what};
10518: }
10519:
10520: sub metadata_create_package_def {
10521: my ($uri,$key,$package,$metathesekeys)=@_;
10522: my ($pack,$name,$subp)=split(/\&/,$key);
10523: if ($subp eq 'default') { next; }
10524:
10525: if (defined($metaentry{':packages'})) {
10526: $metaentry{':packages'}.=','.$package;
10527: } else {
10528: $metaentry{':packages'}=$package;
10529: }
10530: my $value=$packagetab{$key};
10531: my $unikey;
10532: $unikey='parameter_0_'.$name;
10533: $metaentry{':'.$unikey.'.part'}=0;
10534: $$metathesekeys{$unikey}=1;
10535: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10536: $metaentry{':'.$unikey.'.'.$subp}=$value;
10537: }
10538: if (defined($metaentry{':'.$unikey.'.default'})) {
10539: $metaentry{':'.$unikey}=
10540: $metaentry{':'.$unikey.'.default'};
10541: }
10542: }
10543:
10544: sub metadata_generate_part0 {
10545: my ($metadata,$metacache,$uri) = @_;
10546: my %allnames;
10547: foreach my $metakey (keys(%$metadata)) {
10548: if ($metakey=~/^parameter\_(.*)/) {
10549: my $part=$$metacache{':'.$metakey.'.part'};
10550: my $name=$$metacache{':'.$metakey.'.name'};
10551: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10552: $allnames{$name}=$part;
10553: }
10554: }
10555: }
10556: foreach my $name (keys(%allnames)) {
10557: $$metadata{"parameter_0_$name"}=1;
10558: my $key=":parameter_0_$name";
10559: $$metacache{"$key.part"}='0';
10560: $$metacache{"$key.name"}=$name;
10561: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10562: $allnames{$name}.'_'.$name.
10563: '.type'};
10564: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10565: '.display'};
10566: my $expr='[Part: '.$allnames{$name}.']';
10567: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10568: $$metacache{"$key.display"}=$olddis;
10569: }
10570: }
10571:
10572: # ------------------------------------------------------ Devalidate title cache
10573:
10574: sub devalidate_title_cache {
10575: my ($url)=@_;
10576: if (!$env{'request.course.id'}) { return; }
10577: my $symb=&symbread($url);
10578: if (!$symb) { return; }
10579: my $key=$env{'request.course.id'}."\0".$symb;
10580: &devalidate_cache_new('title',$key);
10581: }
10582:
10583: # ------------------------------------------------- Get the title of a course
10584:
10585: sub current_course_title {
10586: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10587: }
10588: # ------------------------------------------------- Get the title of a resource
10589:
10590: sub gettitle {
10591: my $urlsymb=shift;
10592: my $symb=&symbread($urlsymb);
10593: if ($symb) {
10594: my $key=$env{'request.course.id'}."\0".$symb;
10595: my ($result,$cached)=&is_cached_new('title',$key);
10596: if (defined($cached)) {
10597: return $result;
10598: }
10599: my ($map,$resid,$url)=&decode_symb($symb);
10600: my $title='';
10601: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10602: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10603: } else {
10604: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10605: &GDBM_READER(),0640)) {
10606: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10607: $title=$bighash{'title_'.$mapid.'.'.$resid};
10608: untie(%bighash);
10609: }
10610: }
10611: $title=~s/\&colon\;/\:/gs;
10612: if ($title) {
10613: # Remember both $symb and $title for dynamic metadata
10614: $accesshash{$symb.'___crstitle'}=$title;
10615: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10616: # Cache this title and then return it
10617: return &do_cache_new('title',$key,$title,600);
10618: }
10619: $urlsymb=$url;
10620: }
10621: my $title=&metadata($urlsymb,'title');
10622: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10623: return $title;
10624: }
10625:
10626: sub get_slot {
10627: my ($which,$cnum,$cdom)=@_;
10628: if (!$cnum || !$cdom) {
10629: (undef,my $courseid)=&whichuser();
10630: $cdom=$env{'course.'.$courseid.'.domain'};
10631: $cnum=$env{'course.'.$courseid.'.num'};
10632: }
10633: my $key=join("\0",'slots',$cdom,$cnum,$which);
10634: my %slotinfo;
10635: if (exists($remembered{$key})) {
10636: $slotinfo{$which} = $remembered{$key};
10637: } else {
10638: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10639: &Apache::lonhomework::showhash(%slotinfo);
10640: my ($tmp)=keys(%slotinfo);
10641: if ($tmp=~/^error:/) { return (); }
10642: $remembered{$key} = $slotinfo{$which};
10643: }
10644: if (ref($slotinfo{$which}) eq 'HASH') {
10645: return %{$slotinfo{$which}};
10646: }
10647: return $slotinfo{$which};
10648: }
10649:
10650: sub get_reservable_slots {
10651: my ($cnum,$cdom,$uname,$udom) = @_;
10652: my $now = time;
10653: my $reservable_info;
10654: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10655: if (exists($remembered{$key})) {
10656: $reservable_info = $remembered{$key};
10657: } else {
10658: my %resv;
10659: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10660: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10661: $reservable_info = \%resv;
10662: $remembered{$key} = $reservable_info;
10663: }
10664: return $reservable_info;
10665: }
10666:
10667: sub get_course_slots {
10668: my ($cnum,$cdom) = @_;
10669: my $hashid=$cnum.':'.$cdom;
10670: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10671: if (defined($cached)) {
10672: if (ref($result) eq 'HASH') {
10673: return %{$result};
10674: }
10675: } else {
10676: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10677: my ($tmp) = keys(%slots);
10678: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10679: &do_cache_new('allslots',$hashid,\%slots,600);
10680: return %slots;
10681: }
10682: }
10683: return;
10684: }
10685:
10686: sub devalidate_slots_cache {
10687: my ($cnum,$cdom)=@_;
10688: my $hashid=$cnum.':'.$cdom;
10689: &devalidate_cache_new('allslots',$hashid);
10690: }
10691:
10692: sub get_coursechange {
10693: my ($cdom,$cnum) = @_;
10694: if ($cdom eq '' || $cnum eq '') {
10695: return unless ($env{'request.course.id'});
10696: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10697: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10698: }
10699: my $hashid=$cdom.'_'.$cnum;
10700: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10701: if ((defined($cached)) && ($change ne '')) {
10702: return $change;
10703: } else {
10704: my %crshash;
10705: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10706: if ($crshash{'internal.contentchange'} eq '') {
10707: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10708: if ($change eq '') {
10709: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10710: $change = $crshash{'internal.created'};
10711: }
10712: } else {
10713: $change = $crshash{'internal.contentchange'};
10714: }
10715: my $cachetime = 600;
10716: &do_cache_new('crschange',$hashid,$change,$cachetime);
10717: }
10718: return $change;
10719: }
10720:
10721: sub devalidate_coursechange_cache {
10722: my ($cnum,$cdom)=@_;
10723: my $hashid=$cnum.':'.$cdom;
10724: &devalidate_cache_new('crschange',$hashid);
10725: }
10726:
10727: # ------------------------------------------------- Update symbolic store links
10728:
10729: sub symblist {
10730: my ($mapname,%newhash)=@_;
10731: $mapname=&deversion(&declutter($mapname));
10732: my %hash;
10733: if (($env{'request.course.fn'}) && (%newhash)) {
10734: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10735: &GDBM_WRCREAT(),0640)) {
10736: foreach my $url (keys(%newhash)) {
10737: next if ($url eq 'last_known'
10738: && $env{'form.no_update_last_known'});
10739: $hash{declutter($url)}=&encode_symb($mapname,
10740: $newhash{$url}->[1],
10741: $newhash{$url}->[0]);
10742: }
10743: if (untie(%hash)) {
10744: return 'ok';
10745: }
10746: }
10747: }
10748: return 'error';
10749: }
10750:
10751: # --------------------------------------------------------------- Verify a symb
10752:
10753: sub symbverify {
10754: my ($symb,$thisurl,$encstate)=@_;
10755: my $thisfn=$thisurl;
10756: $thisfn=&declutter($thisfn);
10757: # direct jump to resource in page or to a sequence - will construct own symbs
10758: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10759: # check URL part
10760: my ($map,$resid,$url)=&decode_symb($symb);
10761:
10762: unless ($url eq $thisfn) { return 0; }
10763:
10764: $symb=&symbclean($symb);
10765: $thisurl=&deversion($thisurl);
10766: $thisfn=&deversion($thisfn);
10767:
10768: my %bighash;
10769: my $okay=0;
10770:
10771: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10772: &GDBM_READER(),0640)) {
10773: my $noclutter;
10774: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10775: $thisurl =~ s/\?.+$//;
10776: if ($map =~ m{^uploaded/.+\.page$}) {
10777: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10778: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10779: $noclutter = 1;
10780: }
10781: }
10782: my $ids;
10783: if ($noclutter) {
10784: $ids=$bighash{'ids_'.$thisurl};
10785: } else {
10786: $ids=$bighash{'ids_'.&clutter($thisurl)};
10787: }
10788: unless ($ids) {
10789: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10790: $ids=$bighash{$idkey};
10791: }
10792: if ($ids) {
10793: # ------------------------------------------------------------------- Has ID(s)
10794: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10795: $symb =~ s/\?.+$//;
10796: }
10797: foreach my $id (split(/\,/,$ids)) {
10798: my ($mapid,$resid)=split(/\./,$id);
10799: if (
10800: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10801: eq $symb) {
10802: if (ref($encstate)) {
10803: $$encstate = $bighash{'encrypted_'.$id};
10804: }
10805: if (($env{'request.role.adv'}) ||
10806: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10807: ($thisurl eq '/adm/navmaps')) {
10808: $okay=1;
10809: last;
10810: }
10811: }
10812: }
10813: }
10814: untie(%bighash);
10815: }
10816: return $okay;
10817: }
10818:
10819: # --------------------------------------------------------------- Clean-up symb
10820:
10821: sub symbclean {
10822: my $symb=shift;
10823: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10824: # remove version from map
10825: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10826:
10827: # remove version from URL
10828: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10829:
10830: # remove wrapper
10831:
10832: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10833: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10834: return $symb;
10835: }
10836:
10837: # ---------------------------------------------- Split symb to find map and url
10838:
10839: sub encode_symb {
10840: my ($map,$resid,$url)=@_;
10841: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10842: }
10843:
10844: sub decode_symb {
10845: my $symb=shift;
10846: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10847: my ($map,$resid,$url)=split(/___/,$symb);
10848: return (&fixversion($map),$resid,&fixversion($url));
10849: }
10850:
10851: sub fixversion {
10852: my $fn=shift;
10853: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10854: my %bighash;
10855: my $uri=&clutter($fn);
10856: my $key=$env{'request.course.id'}.'_'.$uri;
10857: # is this cached?
10858: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10859: if (defined($cached)) { return $result; }
10860: # unfortunately not cached, or expired
10861: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10862: &GDBM_READER(),0640)) {
10863: if ($bighash{'version_'.$uri}) {
10864: my $version=$bighash{'version_'.$uri};
10865: unless (($version eq 'mostrecent') ||
10866: ($version==&getversion($uri))) {
10867: $uri=~s/\.(\w+)$/\.$version\.$1/;
10868: }
10869: }
10870: untie %bighash;
10871: }
10872: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10873: }
10874:
10875: sub deversion {
10876: my $url=shift;
10877: $url=~s/\.\d+\.(\w+)$/\.$1/;
10878: return $url;
10879: }
10880:
10881: # ------------------------------------------------------ Return symb list entry
10882:
10883: sub symbread {
10884: my ($thisfn,$donotrecurse)=@_;
10885: my $cache_str='request.symbread.cached.'.$thisfn;
10886: if (defined($env{$cache_str})) { return $env{$cache_str}; }
10887: # no filename provided? try from environment
10888: unless ($thisfn) {
10889: if ($env{'request.symb'}) {
10890: return $env{$cache_str}=&symbclean($env{'request.symb'});
10891: }
10892: $thisfn=$env{'request.filename'};
10893: }
10894: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10895: # is that filename actually a symb? Verify, clean, and return
10896: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10897: if (&symbverify($thisfn,$1)) {
10898: return $env{$cache_str}=&symbclean($thisfn);
10899: }
10900: }
10901: $thisfn=declutter($thisfn);
10902: my %hash;
10903: my %bighash;
10904: my $syval='';
10905: if (($env{'request.course.fn'}) && ($thisfn)) {
10906: my $targetfn = $thisfn;
10907: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10908: $targetfn = 'adm/wrapper/'.$thisfn;
10909: }
10910: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10911: $targetfn=$1;
10912: }
10913: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10914: &GDBM_READER(),0640)) {
10915: $syval=$hash{$targetfn};
10916: untie(%hash);
10917: }
10918: # ---------------------------------------------------------- There was an entry
10919: if ($syval) {
10920: #unless ($syval=~/\_\d+$/) {
10921: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10922: #&appenv({'request.ambiguous' => $thisfn});
10923: #return $env{$cache_str}='';
10924: #}
10925: #$syval.=$1;
10926: #}
10927: } else {
10928: # ------------------------------------------------------- Was not in symb table
10929: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10930: &GDBM_READER(),0640)) {
10931: # ---------------------------------------------- Get ID(s) for current resource
10932: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10933: unless ($ids) {
10934: $ids=$bighash{'ids_/'.$thisfn};
10935: }
10936: unless ($ids) {
10937: # alias?
10938: $ids=$bighash{'mapalias_'.$thisfn};
10939: }
10940: if ($ids) {
10941: # ------------------------------------------------------------------- Has ID(s)
10942: my @possibilities=split(/\,/,$ids);
10943: if ($#possibilities==0) {
10944: # ----------------------------------------------- There is only one possibility
10945: my ($mapid,$resid)=split(/\./,$ids);
10946: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10947: $resid,$thisfn);
10948: } elsif (!$donotrecurse) {
10949: # ------------------------------------------ There is more than one possibility
10950: my $realpossible=0;
10951: foreach my $id (@possibilities) {
10952: my $file=$bighash{'src_'.$id};
10953: if (&allowed('bre',$file)) {
10954: my ($mapid,$resid)=split(/\./,$id);
10955: if ($bighash{'map_type_'.$mapid} ne 'page') {
10956: $realpossible++;
10957: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10958: $resid,$thisfn);
10959: }
10960: }
10961: }
10962: if ($realpossible!=1) { $syval=''; }
10963: } else {
10964: $syval='';
10965: }
10966: }
10967: untie(%bighash)
10968: }
10969: }
10970: if ($syval) {
10971: return $env{$cache_str}=$syval;
10972: }
10973: }
10974: &appenv({'request.ambiguous' => $thisfn});
10975: return $env{$cache_str}='';
10976: }
10977:
10978: # ---------------------------------------------------------- Return random seed
10979:
10980: sub numval {
10981: my $txt=shift;
10982: $txt=~tr/A-J/0-9/;
10983: $txt=~tr/a-j/0-9/;
10984: $txt=~tr/K-T/0-9/;
10985: $txt=~tr/k-t/0-9/;
10986: $txt=~tr/U-Z/0-5/;
10987: $txt=~tr/u-z/0-5/;
10988: $txt=~s/\D//g;
10989: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10990: return int($txt);
10991: }
10992:
10993: sub numval2 {
10994: my $txt=shift;
10995: $txt=~tr/A-J/0-9/;
10996: $txt=~tr/a-j/0-9/;
10997: $txt=~tr/K-T/0-9/;
10998: $txt=~tr/k-t/0-9/;
10999: $txt=~tr/U-Z/0-5/;
11000: $txt=~tr/u-z/0-5/;
11001: $txt=~s/\D//g;
11002: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11003: my $total;
11004: foreach my $val (@txts) { $total+=$val; }
11005: if ($_64bit) { if ($total > 2**32) { return -1; } }
11006: return int($total);
11007: }
11008:
11009: sub numval3 {
11010: use integer;
11011: my $txt=shift;
11012: $txt=~tr/A-J/0-9/;
11013: $txt=~tr/a-j/0-9/;
11014: $txt=~tr/K-T/0-9/;
11015: $txt=~tr/k-t/0-9/;
11016: $txt=~tr/U-Z/0-5/;
11017: $txt=~tr/u-z/0-5/;
11018: $txt=~s/\D//g;
11019: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11020: my $total;
11021: foreach my $val (@txts) { $total+=$val; }
11022: if ($_64bit) { $total=(($total<<32)>>32); }
11023: return $total;
11024: }
11025:
11026: sub digest {
11027: my ($data)=@_;
11028: my $digest=&Digest::MD5::md5($data);
11029: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11030: my ($e,$f);
11031: {
11032: use integer;
11033: $e=($a+$b);
11034: $f=($c+$d);
11035: if ($_64bit) {
11036: $e=(($e<<32)>>32);
11037: $f=(($f<<32)>>32);
11038: }
11039: }
11040: if (wantarray) {
11041: return ($e,$f);
11042: } else {
11043: my $g;
11044: {
11045: use integer;
11046: $g=($e+$f);
11047: if ($_64bit) {
11048: $g=(($g<<32)>>32);
11049: }
11050: }
11051: return $g;
11052: }
11053: }
11054:
11055: sub latest_rnd_algorithm_id {
11056: return '64bit5';
11057: }
11058:
11059: sub get_rand_alg {
11060: my ($courseid)=@_;
11061: if (!$courseid) { $courseid=(&whichuser())[1]; }
11062: if ($courseid) {
11063: return $env{"course.$courseid.rndseed"};
11064: }
11065: return &latest_rnd_algorithm_id();
11066: }
11067:
11068: sub validCODE {
11069: my ($CODE)=@_;
11070: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11071: return 0;
11072: }
11073:
11074: sub getCODE {
11075: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11076: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11077: defined($Apache::lonhomework::parsing_a_task) ) &&
11078: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11079: return $Apache::lonhomework::history{'resource.CODE'};
11080: }
11081: return undef;
11082: }
11083: #
11084: # Determines the random seed for a specific context:
11085: #
11086: # parameters:
11087: # symb - in course context the symb for the seed.
11088: # course_id - The course id of the form domain_coursenum.
11089: # domain - Domain for the user.
11090: # course - Course for the user.
11091: # cenv - environment of the course.
11092: #
11093: # NOTE:
11094: # All parameters are picked out of the environment if missing
11095: # or not defined.
11096: # If a symb cannot be determined the current time is used instead.
11097: #
11098: # For a given well defined symb, courside, domain, username,
11099: # and course environment, the seed is reproducible.
11100: #
11101: sub rndseed {
11102: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11103: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11104: if (!defined($symb)) {
11105: unless ($symb=$wsymb) { return time; }
11106: }
11107: if (!defined $courseid) {
11108: $courseid=$wcourseid;
11109: }
11110: if (!defined $domain) { $domain=$wdomain; }
11111: if (!defined $username) { $username=$wusername }
11112:
11113: my $which;
11114: if (defined($cenv->{'rndseed'})) {
11115: $which = $cenv->{'rndseed'};
11116: } else {
11117: $which =&get_rand_alg($courseid);
11118: }
11119: if (defined(&getCODE())) {
11120:
11121: if ($which eq '64bit5') {
11122: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11123: } elsif ($which eq '64bit4') {
11124: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11125: } else {
11126: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11127: }
11128: } elsif ($which eq '64bit5') {
11129: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11130: } elsif ($which eq '64bit4') {
11131: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11132: } elsif ($which eq '64bit3') {
11133: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11134: } elsif ($which eq '64bit2') {
11135: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11136: } elsif ($which eq '64bit') {
11137: return &rndseed_64bit($symb,$courseid,$domain,$username);
11138: }
11139: return &rndseed_32bit($symb,$courseid,$domain,$username);
11140: }
11141:
11142: sub rndseed_32bit {
11143: my ($symb,$courseid,$domain,$username)=@_;
11144: {
11145: use integer;
11146: my $symbchck=unpack("%32C*",$symb) << 27;
11147: my $symbseed=numval($symb) << 22;
11148: my $namechck=unpack("%32C*",$username) << 17;
11149: my $nameseed=numval($username) << 12;
11150: my $domainseed=unpack("%32C*",$domain) << 7;
11151: my $courseseed=unpack("%32C*",$courseid);
11152: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11153: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11154: #&logthis("rndseed :$num:$symb");
11155: if ($_64bit) { $num=(($num<<32)>>32); }
11156: return $num;
11157: }
11158: }
11159:
11160: sub rndseed_64bit {
11161: my ($symb,$courseid,$domain,$username)=@_;
11162: {
11163: use integer;
11164: my $symbchck=unpack("%32S*",$symb) << 21;
11165: my $symbseed=numval($symb) << 10;
11166: my $namechck=unpack("%32S*",$username);
11167:
11168: my $nameseed=numval($username) << 21;
11169: my $domainseed=unpack("%32S*",$domain) << 10;
11170: my $courseseed=unpack("%32S*",$courseid);
11171:
11172: my $num1=$symbchck+$symbseed+$namechck;
11173: my $num2=$nameseed+$domainseed+$courseseed;
11174: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11175: #&logthis("rndseed :$num:$symb");
11176: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11177: return "$num1,$num2";
11178: }
11179: }
11180:
11181: sub rndseed_64bit2 {
11182: my ($symb,$courseid,$domain,$username)=@_;
11183: {
11184: use integer;
11185: # strings need to be an even # of cahracters long, it it is odd the
11186: # last characters gets thrown away
11187: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11188: my $symbseed=numval($symb) << 10;
11189: my $namechck=unpack("%32S*",$username.' ');
11190:
11191: my $nameseed=numval($username) << 21;
11192: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11193: my $courseseed=unpack("%32S*",$courseid.' ');
11194:
11195: my $num1=$symbchck+$symbseed+$namechck;
11196: my $num2=$nameseed+$domainseed+$courseseed;
11197: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11198: #&logthis("rndseed :$num:$symb");
11199: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11200: return "$num1,$num2";
11201: }
11202: }
11203:
11204: sub rndseed_64bit3 {
11205: my ($symb,$courseid,$domain,$username)=@_;
11206: {
11207: use integer;
11208: # strings need to be an even # of cahracters long, it it is odd the
11209: # last characters gets thrown away
11210: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11211: my $symbseed=numval2($symb) << 10;
11212: my $namechck=unpack("%32S*",$username.' ');
11213:
11214: my $nameseed=numval2($username) << 21;
11215: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11216: my $courseseed=unpack("%32S*",$courseid.' ');
11217:
11218: my $num1=$symbchck+$symbseed+$namechck;
11219: my $num2=$nameseed+$domainseed+$courseseed;
11220: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11221: #&logthis("rndseed :$num1:$num2:$_64bit");
11222: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11223:
11224: return "$num1:$num2";
11225: }
11226: }
11227:
11228: sub rndseed_64bit4 {
11229: my ($symb,$courseid,$domain,$username)=@_;
11230: {
11231: use integer;
11232: # strings need to be an even # of cahracters long, it it is odd the
11233: # last characters gets thrown away
11234: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11235: my $symbseed=numval3($symb) << 10;
11236: my $namechck=unpack("%32S*",$username.' ');
11237:
11238: my $nameseed=numval3($username) << 21;
11239: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11240: my $courseseed=unpack("%32S*",$courseid.' ');
11241:
11242: my $num1=$symbchck+$symbseed+$namechck;
11243: my $num2=$nameseed+$domainseed+$courseseed;
11244: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11245: #&logthis("rndseed :$num1:$num2:$_64bit");
11246: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11247:
11248: return "$num1:$num2";
11249: }
11250: }
11251:
11252: sub rndseed_64bit5 {
11253: my ($symb,$courseid,$domain,$username)=@_;
11254: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11255: return "$num1:$num2";
11256: }
11257:
11258: sub rndseed_CODE_64bit {
11259: my ($symb,$courseid,$domain,$username)=@_;
11260: {
11261: use integer;
11262: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11263: my $symbseed=numval2($symb);
11264: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11265: my $CODEseed=numval(&getCODE());
11266: my $courseseed=unpack("%32S*",$courseid.' ');
11267: my $num1=$symbseed+$CODEchck;
11268: my $num2=$CODEseed+$courseseed+$symbchck;
11269: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11270: #&logthis("rndseed :$num1:$num2:$symb");
11271: if ($_64bit) { $num1=(($num1<<32)>>32); }
11272: if ($_64bit) { $num2=(($num2<<32)>>32); }
11273: return "$num1:$num2";
11274: }
11275: }
11276:
11277: sub rndseed_CODE_64bit4 {
11278: my ($symb,$courseid,$domain,$username)=@_;
11279: {
11280: use integer;
11281: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11282: my $symbseed=numval3($symb);
11283: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11284: my $CODEseed=numval3(&getCODE());
11285: my $courseseed=unpack("%32S*",$courseid.' ');
11286: my $num1=$symbseed+$CODEchck;
11287: my $num2=$CODEseed+$courseseed+$symbchck;
11288: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11289: #&logthis("rndseed :$num1:$num2:$symb");
11290: if ($_64bit) { $num1=(($num1<<32)>>32); }
11291: if ($_64bit) { $num2=(($num2<<32)>>32); }
11292: return "$num1:$num2";
11293: }
11294: }
11295:
11296: sub rndseed_CODE_64bit5 {
11297: my ($symb,$courseid,$domain,$username)=@_;
11298: my $code = &getCODE();
11299: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11300: return "$num1:$num2";
11301: }
11302:
11303: sub setup_random_from_rndseed {
11304: my ($rndseed)=@_;
11305: if ($rndseed =~/([,:])/) {
11306: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11307: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11308: &Math::Random::random_set_seed_from_phrase($rndseed);
11309: } else {
11310: &Math::Random::random_set_seed($num1,$num2);
11311: }
11312: } else {
11313: &Math::Random::random_set_seed_from_phrase($rndseed);
11314: }
11315: }
11316:
11317: sub latest_receipt_algorithm_id {
11318: return 'receipt3';
11319: }
11320:
11321: sub recunique {
11322: my $fucourseid=shift;
11323: my $unique;
11324: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11325: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11326: $unique=$env{"course.$fucourseid.internal.encseed"};
11327: } else {
11328: $unique=$perlvar{'lonReceipt'};
11329: }
11330: return unpack("%32C*",$unique);
11331: }
11332:
11333: sub recprefix {
11334: my $fucourseid=shift;
11335: my $prefix;
11336: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11337: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11338: $prefix=$env{"course.$fucourseid.internal.encpref"};
11339: } else {
11340: $prefix=$perlvar{'lonHostID'};
11341: }
11342: return unpack("%32C*",$prefix);
11343: }
11344:
11345: sub ireceipt {
11346: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11347:
11348: my $return =&recprefix($fucourseid).'-';
11349:
11350: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11351: $env{'request.state'} eq 'construct') {
11352: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11353: return $return;
11354: }
11355:
11356: my $cuname=unpack("%32C*",$funame);
11357: my $cudom=unpack("%32C*",$fudom);
11358: my $cucourseid=unpack("%32C*",$fucourseid);
11359: my $cusymb=unpack("%32C*",$fusymb);
11360: my $cunique=&recunique($fucourseid);
11361: my $cpart=unpack("%32S*",$part);
11362: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11363:
11364: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11365:
11366: $return.= ($cunique%$cuname+
11367: $cunique%$cudom+
11368: $cusymb%$cuname+
11369: $cusymb%$cudom+
11370: $cucourseid%$cuname+
11371: $cucourseid%$cudom+
11372: $cpart%$cuname+
11373: $cpart%$cudom);
11374: } else {
11375: $return.= ($cunique%$cuname+
11376: $cunique%$cudom+
11377: $cusymb%$cuname+
11378: $cusymb%$cudom+
11379: $cucourseid%$cuname+
11380: $cucourseid%$cudom);
11381: }
11382: return $return;
11383: }
11384:
11385: sub receipt {
11386: my ($part)=@_;
11387: my ($symb,$courseid,$domain,$name) = &whichuser();
11388: return &ireceipt($name,$domain,$courseid,$symb,$part);
11389: }
11390:
11391: sub whichuser {
11392: my ($passedsymb)=@_;
11393: my ($symb,$courseid,$domain,$name,$publicuser);
11394: if (defined($env{'form.grade_symb'})) {
11395: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11396: my $allowed=&allowed('vgr',$tmp_courseid);
11397: if (!$allowed &&
11398: exists($env{'request.course.sec'}) &&
11399: $env{'request.course.sec'} !~ /^\s*$/) {
11400: $allowed=&allowed('vgr',$tmp_courseid.
11401: '/'.$env{'request.course.sec'});
11402: }
11403: if ($allowed) {
11404: ($symb)=&get_env_multiple('form.grade_symb');
11405: $courseid=$tmp_courseid;
11406: ($domain)=&get_env_multiple('form.grade_domain');
11407: ($name)=&get_env_multiple('form.grade_username');
11408: return ($symb,$courseid,$domain,$name,$publicuser);
11409: }
11410: }
11411: if (!$passedsymb) {
11412: $symb=&symbread();
11413: } else {
11414: $symb=$passedsymb;
11415: }
11416: $courseid=$env{'request.course.id'};
11417: $domain=$env{'user.domain'};
11418: $name=$env{'user.name'};
11419: if ($name eq 'public' && $domain eq 'public') {
11420: if (!defined($env{'form.username'})) {
11421: $env{'form.username'}.=time.rand(10000000);
11422: }
11423: $name.=$env{'form.username'};
11424: }
11425: return ($symb,$courseid,$domain,$name,$publicuser);
11426:
11427: }
11428:
11429: # ------------------------------------------------------------ Serves up a file
11430: # returns either the contents of the file or
11431: # -1 if the file doesn't exist
11432: #
11433: # if the target is a file that was uploaded via DOCS,
11434: # a check will be made to see if a current copy exists on the local server,
11435: # if it does this will be served, otherwise a copy will be retrieved from
11436: # the home server for the course and stored in /home/httpd/html/userfiles on
11437: # the local server.
11438:
11439: sub getfile {
11440: my ($file) = @_;
11441: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11442: &repcopy($file);
11443: return &readfile($file);
11444: }
11445:
11446: sub repcopy_userfile {
11447: my ($file)=@_;
11448: my $londocroot = $perlvar{'lonDocRoot'};
11449: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11450: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11451: my ($cdom,$cnum,$filename) =
11452: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11453: my $uri="/uploaded/$cdom/$cnum/$filename";
11454: if (-e "$file") {
11455: # we already have a local copy, check it out
11456: my @fileinfo = stat($file);
11457: my $rtncode;
11458: my $info;
11459: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11460: if ($lwpresp ne 'ok') {
11461: # there is no such file anymore, even though we had a local copy
11462: if ($rtncode eq '404') {
11463: unlink($file);
11464: }
11465: return -1;
11466: }
11467: if ($info < $fileinfo[9]) {
11468: # nice, the file we have is up-to-date, just say okay
11469: return 'ok';
11470: } else {
11471: # the file is outdated, get rid of it
11472: unlink($file);
11473: }
11474: }
11475: # one way or the other, at this point, we don't have the file
11476: # construct the correct path for the file
11477: my @parts = ($cdom,$cnum);
11478: if ($filename =~ m|^(.+)/[^/]+$|) {
11479: push @parts, split(/\//,$1);
11480: }
11481: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11482: foreach my $part (@parts) {
11483: $path .= '/'.$part;
11484: if (!-e $path) {
11485: mkdir($path,0770);
11486: }
11487: }
11488: # now the path exists for sure
11489: # get a user agent
11490: my $ua=new LWP::UserAgent;
11491: my $transferfile=$file.'.in.transfer';
11492: # FIXME: this should flock
11493: if (-e $transferfile) { return 'ok'; }
11494: my $request;
11495: $uri=~s/^\///;
11496: my $homeserver = &homeserver($cnum,$cdom);
11497: my $protocol = $protocol{$homeserver};
11498: $protocol = 'http' if ($protocol ne 'https');
11499: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11500: my $response=$ua->request($request,$transferfile);
11501: # did it work?
11502: if ($response->is_error()) {
11503: unlink($transferfile);
11504: &logthis("Userfile repcopy failed for $uri");
11505: return -1;
11506: }
11507: # worked, rename the transfer file
11508: rename($transferfile,$file);
11509: return 'ok';
11510: }
11511:
11512: sub tokenwrapper {
11513: my $uri=shift;
11514: $uri=~s|^https?\://([^/]+)||;
11515: $uri=~s|^/||;
11516: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11517: my $token=$1;
11518: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11519: if ($udom && $uname && $file) {
11520: $file=~s|(\?\.*)*$||;
11521: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11522: my $homeserver = &homeserver($uname,$udom);
11523: my $protocol = $protocol{$homeserver};
11524: $protocol = 'http' if ($protocol ne 'https');
11525: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11526: (($uri=~/\?/)?'&':'?').'token='.$token.
11527: '&tokenissued='.$perlvar{'lonHostID'};
11528: } else {
11529: return '/adm/notfound.html';
11530: }
11531: }
11532:
11533: # call with reqtype HEAD: get last modification time
11534: # call with reqtype GET: get the file contents
11535: # Do not call this with reqtype GET for large files! It loads everything into memory
11536: #
11537: sub getuploaded {
11538: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11539: $uri=~s/^\///;
11540: my $homeserver = &homeserver($cnum,$cdom);
11541: my $protocol = $protocol{$homeserver};
11542: $protocol = 'http' if ($protocol ne 'https');
11543: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11544: my $ua=new LWP::UserAgent;
11545: my $request=new HTTP::Request($reqtype,$uri);
11546: my $response=$ua->request($request);
11547: $$rtncode = $response->code;
11548: if (! $response->is_success()) {
11549: return 'failed';
11550: }
11551: if ($reqtype eq 'HEAD') {
11552: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11553: } elsif ($reqtype eq 'GET') {
11554: $$info = $response->content;
11555: }
11556: return 'ok';
11557: }
11558:
11559: sub readfile {
11560: my $file = shift;
11561: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11562: my $fh;
11563: open($fh,"<$file");
11564: my $a='';
11565: while (my $line = <$fh>) { $a .= $line; }
11566: return $a;
11567: }
11568:
11569: sub filelocation {
11570: my ($dir,$file) = @_;
11571: my $location;
11572: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11573:
11574: if ($file =~ m-^/adm/-) {
11575: $file=~s-^/adm/wrapper/-/-;
11576: $file=~s-^/adm/coursedocs/showdoc/-/-;
11577: }
11578:
11579: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11580: $location = $file;
11581: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11582: my ($udom,$uname,$filename)=
11583: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11584: my $home=&homeserver($uname,$udom);
11585: my $is_me=0;
11586: my @ids=¤t_machine_ids();
11587: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11588: if ($is_me) {
11589: $location=propath($udom,$uname).'/userfiles/'.$filename;
11590: } else {
11591: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11592: $udom.'/'.$uname.'/'.$filename;
11593: }
11594: } elsif ($file =~ m-^/adm/-) {
11595: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11596: } else {
11597: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11598: $file=~s:^/(res|priv)/:/:;
11599: my $space=$1;
11600: if ( !( $file =~ m:^/:) ) {
11601: $location = $dir. '/'.$file;
11602: } else {
11603: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11604: }
11605: }
11606: $location=~s://+:/:g; # remove duplicate /
11607: while ($location=~m{/\.\./}) {
11608: if ($location =~ m{/[^/]+/\.\./}) {
11609: $location=~ s{/[^/]+/\.\./}{/}g;
11610: } else {
11611: $location=~ s{/\.\./}{/}g;
11612: }
11613: } #remove dir/..
11614: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11615: return $location;
11616: }
11617:
11618: sub hreflocation {
11619: my ($dir,$file)=@_;
11620: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11621: $file=filelocation($dir,$file);
11622: } elsif ($file=~m-^/adm/-) {
11623: $file=~s-^/adm/wrapper/-/-;
11624: $file=~s-^/adm/coursedocs/showdoc/-/-;
11625: }
11626: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11627: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11628: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11629: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11630: {/uploaded/$1/$2/}x;
11631: }
11632: if ($file=~ m{^/userfiles/}) {
11633: $file =~ s{^/userfiles/}{/uploaded/};
11634: }
11635: return $file;
11636: }
11637:
11638:
11639:
11640:
11641:
11642: sub current_machine_domains {
11643: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11644: }
11645:
11646: sub machine_domains {
11647: my ($hostname) = @_;
11648: my @domains;
11649: my %hostname = &all_hostnames();
11650: while( my($id, $name) = each(%hostname)) {
11651: # &logthis("-$id-$name-$hostname-");
11652: if ($hostname eq $name) {
11653: push(@domains,&host_domain($id));
11654: }
11655: }
11656: return @domains;
11657: }
11658:
11659: sub current_machine_ids {
11660: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11661: }
11662:
11663: sub machine_ids {
11664: my ($hostname) = @_;
11665: $hostname ||= &hostname($perlvar{'lonHostID'});
11666: my @ids;
11667: my %name_to_host = &all_names();
11668: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11669: return @{ $name_to_host{$hostname} };
11670: }
11671: return;
11672: }
11673:
11674: sub additional_machine_domains {
11675: my @domains;
11676: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11677: while( my $line = <$fh>) {
11678: $line =~ s/\s//g;
11679: push(@domains,$line);
11680: }
11681: return @domains;
11682: }
11683:
11684: sub default_login_domain {
11685: my $domain = $perlvar{'lonDefDomain'};
11686: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11687: foreach my $posdom (¤t_machine_domains(),
11688: &additional_machine_domains()) {
11689: if (lc($posdom) eq lc($testdomain)) {
11690: $domain=$posdom;
11691: last;
11692: }
11693: }
11694: return $domain;
11695: }
11696:
11697: # ------------------------------------------------------------- Declutters URLs
11698:
11699: sub declutter {
11700: my $thisfn=shift;
11701: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11702: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
11703: $thisfn=~s{^/home/httpd/html}{};
11704: }
11705: $thisfn=~s/^\///;
11706: $thisfn=~s|^adm/wrapper/||;
11707: $thisfn=~s|^adm/coursedocs/showdoc/||;
11708: $thisfn=~s/^res\///;
11709: $thisfn=~s/^priv\///;
11710: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11711: $thisfn=~s/\?.+$//;
11712: }
11713: return $thisfn;
11714: }
11715:
11716: # ------------------------------------------------------------- Clutter up URLs
11717:
11718: sub clutter {
11719: my $thisfn='/'.&declutter(shift);
11720: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11721: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11722: $thisfn='/res'.$thisfn;
11723: }
11724: if ($thisfn !~m|^/adm|) {
11725: if ($thisfn =~ m|^/ext/|) {
11726: $thisfn='/adm/wrapper'.$thisfn;
11727: } else {
11728: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11729: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11730: if ($embstyle eq 'ssi'
11731: || ($embstyle eq 'hdn')
11732: || ($embstyle eq 'rat')
11733: || ($embstyle eq 'prv')
11734: || ($embstyle eq 'ign')) {
11735: #do nothing with these
11736: } elsif (($embstyle eq 'img')
11737: || ($embstyle eq 'emb')
11738: || ($embstyle eq 'wrp')) {
11739: $thisfn='/adm/wrapper'.$thisfn;
11740: } elsif ($embstyle eq 'unk'
11741: && $thisfn!~/\.(sequence|page)$/) {
11742: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11743: } else {
11744: # &logthis("Got a blank emb style");
11745: }
11746: }
11747: }
11748: return $thisfn;
11749: }
11750:
11751: sub clutter_with_no_wrapper {
11752: my $uri = &clutter(shift);
11753: if ($uri =~ m-^/adm/-) {
11754: $uri =~ s-^/adm/wrapper/-/-;
11755: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11756: }
11757: return $uri;
11758: }
11759:
11760: sub freeze_escape {
11761: my ($value)=@_;
11762: if (ref($value)) {
11763: $value=&nfreeze($value);
11764: return '__FROZEN__'.&escape($value);
11765: }
11766: return &escape($value);
11767: }
11768:
11769:
11770: sub thaw_unescape {
11771: my ($value)=@_;
11772: if ($value =~ /^__FROZEN__/) {
11773: substr($value,0,10,undef);
11774: $value=&unescape($value);
11775: return &thaw($value);
11776: }
11777: return &unescape($value);
11778: }
11779:
11780: sub correct_line_ends {
11781: my ($result)=@_;
11782: $$result =~s/\r\n/\n/mg;
11783: $$result =~s/\r/\n/mg;
11784: }
11785: # ================================================================ Main Program
11786:
11787: sub goodbye {
11788: &logthis("Starting Shut down");
11789: #not converted to using infrastruture and probably shouldn't be
11790: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11791: #converted
11792: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11793: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11794: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11795: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11796: #1.1 only
11797: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11798: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11799: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11800: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11801: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11802: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11803: &logthis(sprintf("%-20s is %s",'hits',$hits));
11804: &flushcourselogs();
11805: &logthis("Shutting down");
11806: }
11807:
11808: sub get_dns {
11809: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11810: if (!$ignore_cache) {
11811: my ($content,$cached)=
11812: &Apache::lonnet::is_cached_new('dns',$url);
11813: if ($cached) {
11814: &$func($content,$hashref);
11815: return;
11816: }
11817: }
11818:
11819: my %alldns;
11820: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11821: foreach my $dns (<$config>) {
11822: next if ($dns !~ /^\^(\S*)/x);
11823: my $line = $1;
11824: my ($host,$protocol) = split(/:/,$line);
11825: if ($protocol ne 'https') {
11826: $protocol = 'http';
11827: }
11828: $alldns{$host} = $protocol;
11829: }
11830: while (%alldns) {
11831: my ($dns) = sort { $b cmp $a } keys(%alldns);
11832: my $ua=new LWP::UserAgent;
11833: $ua->timeout(30);
11834: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11835: my $response=$ua->request($request);
11836: delete($alldns{$dns});
11837: next if ($response->is_error());
11838: my @content = split("\n",$response->content);
11839: unless ($nocache) {
11840: &do_cache_new('dns',$url,\@content,30*24*60*60);
11841: }
11842: &$func(\@content,$hashref);
11843: return;
11844: }
11845: close($config);
11846: my $which = (split('/',$url))[3];
11847: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11848: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11849: my @content = <$config>;
11850: &$func(\@content,$hashref);
11851: return;
11852: }
11853:
11854: # ------------------------------------------------------Get DNS checksums file
11855: sub parse_dns_checksums_tab {
11856: my ($lines,$hashref) = @_;
11857: my $lonhost = $perlvar{'lonHostID'};
11858: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
11859: my $loncaparev = &get_server_loncaparev($machine_dom);
11860: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
11861: my $webconfdir = '/etc/httpd/conf';
11862: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
11863: $webconfdir = '/etc/apache2';
11864: } elsif ($distro =~ /^sles(\d+)$/) {
11865: if ($1 >= 10) {
11866: $webconfdir = '/etc/apache2';
11867: }
11868: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
11869: if ($1 >= 10.0) {
11870: $webconfdir = '/etc/apache2';
11871: }
11872: }
11873: my ($release,$timestamp) = split(/\-/,$loncaparev);
11874: my (%chksum,%revnum);
11875: if (ref($lines) eq 'ARRAY') {
11876: chomp(@{$lines});
11877: my $version = shift(@{$lines});
11878: if ($version eq $release) {
11879: foreach my $line (@{$lines}) {
11880: my ($file,$version,$shasum) = split(/,/,$line);
11881: if ($file =~ m{^/etc/httpd/conf}) {
11882: if ($webconfdir eq '/etc/apache2') {
11883: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
11884: }
11885: }
11886: $chksum{$file} = $shasum;
11887: $revnum{$file} = $version;
11888: }
11889: if (ref($hashref) eq 'HASH') {
11890: %{$hashref} = (
11891: sums => \%chksum,
11892: versions => \%revnum,
11893: );
11894: }
11895: }
11896: }
11897: return;
11898: }
11899:
11900: sub fetch_dns_checksums {
11901: my %checksums;
11902: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11903: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
11904: my ($release,$timestamp) = split(/\-/,$loncaparev);
11905: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
11906: \%checksums);
11907: return \%checksums;
11908: }
11909:
11910: # ------------------------------------------------------------ Read domain file
11911: {
11912: my $loaded;
11913: my %domain;
11914:
11915: sub parse_domain_tab {
11916: my ($lines) = @_;
11917: foreach my $line (@$lines) {
11918: next if ($line =~ /^(\#|\s*$ )/x);
11919:
11920: chomp($line);
11921: my ($name,@elements) = split(/:/,$line,9);
11922: my %this_domain;
11923: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11924: 'lang_def', 'city', 'longi', 'lati',
11925: 'primary') {
11926: $this_domain{$field} = shift(@elements);
11927: }
11928: $domain{$name} = \%this_domain;
11929: }
11930: }
11931:
11932: sub reset_domain_info {
11933: undef($loaded);
11934: undef(%domain);
11935: }
11936:
11937: sub load_domain_tab {
11938: my ($ignore_cache) = @_;
11939: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11940: my $fh;
11941: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11942: my @lines = <$fh>;
11943: &parse_domain_tab(\@lines);
11944: }
11945: close($fh);
11946: $loaded = 1;
11947: }
11948:
11949: sub domain {
11950: &load_domain_tab() if (!$loaded);
11951:
11952: my ($name,$what) = @_;
11953: return if ( !exists($domain{$name}) );
11954:
11955: if (!$what) {
11956: return $domain{$name}{'description'};
11957: }
11958: return $domain{$name}{$what};
11959: }
11960:
11961: sub domain_info {
11962: &load_domain_tab() if (!$loaded);
11963: return %domain;
11964: }
11965:
11966: }
11967:
11968:
11969: # ------------------------------------------------------------- Read hosts file
11970: {
11971: my %hostname;
11972: my %hostdom;
11973: my %libserv;
11974: my $loaded;
11975: my %name_to_host;
11976: my %internetdom;
11977: my %LC_dns_serv;
11978:
11979: sub parse_hosts_tab {
11980: my ($file) = @_;
11981: foreach my $configline (@$file) {
11982: next if ($configline =~ /^(\#|\s*$ )/x);
11983: chomp($configline);
11984: if ($configline =~ /^\^/) {
11985: if ($configline =~ /^\^([\w.\-]+)/) {
11986: $LC_dns_serv{$1} = 1;
11987: }
11988: next;
11989: }
11990: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11991: $name=~s/\s//g;
11992: if ($id && $domain && $role && $name) {
11993: $hostname{$id}=$name;
11994: push(@{$name_to_host{$name}}, $id);
11995: $hostdom{$id}=$domain;
11996: if ($role eq 'library') { $libserv{$id}=$name; }
11997: if (defined($protocol)) {
11998: if ($protocol eq 'https') {
11999: $protocol{$id} = $protocol;
12000: } else {
12001: $protocol{$id} = 'http';
12002: }
12003: } else {
12004: $protocol{$id} = 'http';
12005: }
12006: if (defined($intdom)) {
12007: $internetdom{$id} = $intdom;
12008: }
12009: }
12010: }
12011: }
12012:
12013: sub reset_hosts_info {
12014: &purge_remembered();
12015: &reset_domain_info();
12016: &reset_hosts_ip_info();
12017: undef(%name_to_host);
12018: undef(%hostname);
12019: undef(%hostdom);
12020: undef(%libserv);
12021: undef($loaded);
12022: }
12023:
12024: sub load_hosts_tab {
12025: my ($ignore_cache) = @_;
12026: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
12027: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12028: my @config = <$config>;
12029: &parse_hosts_tab(\@config);
12030: close($config);
12031: $loaded=1;
12032: }
12033:
12034: sub hostname {
12035: &load_hosts_tab() if (!$loaded);
12036:
12037: my ($lonid) = @_;
12038: return $hostname{$lonid};
12039: }
12040:
12041: sub all_hostnames {
12042: &load_hosts_tab() if (!$loaded);
12043:
12044: return %hostname;
12045: }
12046:
12047: sub all_names {
12048: &load_hosts_tab() if (!$loaded);
12049:
12050: return %name_to_host;
12051: }
12052:
12053: sub all_host_domain {
12054: &load_hosts_tab() if (!$loaded);
12055: return %hostdom;
12056: }
12057:
12058: sub is_library {
12059: &load_hosts_tab() if (!$loaded);
12060:
12061: return exists($libserv{$_[0]});
12062: }
12063:
12064: sub all_library {
12065: &load_hosts_tab() if (!$loaded);
12066:
12067: return %libserv;
12068: }
12069:
12070: sub unique_library {
12071: #2x reverse removes all hostnames that appear more than once
12072: my %unique = reverse &all_library();
12073: return reverse %unique;
12074: }
12075:
12076: sub get_servers {
12077: &load_hosts_tab() if (!$loaded);
12078:
12079: my ($domain,$type) = @_;
12080: my %possible_hosts = ($type eq 'library') ? %libserv
12081: : %hostname;
12082: my %result;
12083: if (ref($domain) eq 'ARRAY') {
12084: while ( my ($host,$hostname) = each(%possible_hosts)) {
12085: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12086: $result{$host} = $hostname;
12087: }
12088: }
12089: } else {
12090: while ( my ($host,$hostname) = each(%possible_hosts)) {
12091: if ($hostdom{$host} eq $domain) {
12092: $result{$host} = $hostname;
12093: }
12094: }
12095: }
12096: return %result;
12097: }
12098:
12099: sub get_unique_servers {
12100: my %unique = reverse &get_servers(@_);
12101: return reverse %unique;
12102: }
12103:
12104: sub host_domain {
12105: &load_hosts_tab() if (!$loaded);
12106:
12107: my ($lonid) = @_;
12108: return $hostdom{$lonid};
12109: }
12110:
12111: sub all_domains {
12112: &load_hosts_tab() if (!$loaded);
12113:
12114: my %seen;
12115: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12116: return @uniq;
12117: }
12118:
12119: sub internet_dom {
12120: &load_hosts_tab() if (!$loaded);
12121:
12122: my ($lonid) = @_;
12123: return $internetdom{$lonid};
12124: }
12125:
12126: sub is_LC_dns {
12127: &load_hosts_tab() if (!$loaded);
12128:
12129: my ($hostname) = @_;
12130: return exists($LC_dns_serv{$hostname});
12131: }
12132:
12133: }
12134:
12135: {
12136: my %iphost;
12137: my %name_to_ip;
12138: my %lonid_to_ip;
12139:
12140: sub get_hosts_from_ip {
12141: my ($ip) = @_;
12142: my %iphosts = &get_iphost();
12143: if (ref($iphosts{$ip})) {
12144: return @{$iphosts{$ip}};
12145: }
12146: return;
12147: }
12148:
12149: sub reset_hosts_ip_info {
12150: undef(%iphost);
12151: undef(%name_to_ip);
12152: undef(%lonid_to_ip);
12153: }
12154:
12155: sub get_host_ip {
12156: my ($lonid) = @_;
12157: if (exists($lonid_to_ip{$lonid})) {
12158: return $lonid_to_ip{$lonid};
12159: }
12160: my $name=&hostname($lonid);
12161: my $ip = gethostbyname($name);
12162: return if (!$ip || length($ip) ne 4);
12163: $ip=inet_ntoa($ip);
12164: $name_to_ip{$name} = $ip;
12165: $lonid_to_ip{$lonid} = $ip;
12166: return $ip;
12167: }
12168:
12169: sub get_iphost {
12170: my ($ignore_cache) = @_;
12171:
12172: if (!$ignore_cache) {
12173: if (%iphost) {
12174: return %iphost;
12175: }
12176: my ($ip_info,$cached)=
12177: &Apache::lonnet::is_cached_new('iphost','iphost');
12178: if ($cached) {
12179: %iphost = %{$ip_info->[0]};
12180: %name_to_ip = %{$ip_info->[1]};
12181: %lonid_to_ip = %{$ip_info->[2]};
12182: return %iphost;
12183: }
12184: }
12185:
12186: # get yesterday's info for fallback
12187: my %old_name_to_ip;
12188: my ($ip_info,$cached)=
12189: &Apache::lonnet::is_cached_new('iphost','iphost');
12190: if ($cached) {
12191: %old_name_to_ip = %{$ip_info->[1]};
12192: }
12193:
12194: my %name_to_host = &all_names();
12195: foreach my $name (keys(%name_to_host)) {
12196: my $ip;
12197: if (!exists($name_to_ip{$name})) {
12198: $ip = gethostbyname($name);
12199: if (!$ip || length($ip) ne 4) {
12200: if (defined($old_name_to_ip{$name})) {
12201: $ip = $old_name_to_ip{$name};
12202: &logthis("Can't find $name defaulting to old $ip");
12203: } else {
12204: &logthis("Name $name no IP found");
12205: next;
12206: }
12207: } else {
12208: $ip=inet_ntoa($ip);
12209: }
12210: $name_to_ip{$name} = $ip;
12211: } else {
12212: $ip = $name_to_ip{$name};
12213: }
12214: foreach my $id (@{ $name_to_host{$name} }) {
12215: $lonid_to_ip{$id} = $ip;
12216: }
12217: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12218: }
12219: &do_cache_new('iphost','iphost',
12220: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12221: 48*60*60);
12222:
12223: return %iphost;
12224: }
12225:
12226: #
12227: # Given a DNS returns the loncapa host name for that DNS
12228: #
12229: sub host_from_dns {
12230: my ($dns) = @_;
12231: my @hosts;
12232: my $ip;
12233:
12234: if (exists($name_to_ip{$dns})) {
12235: $ip = $name_to_ip{$dns};
12236: }
12237: if (!$ip) {
12238: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12239: if (length($ip) == 4) {
12240: $ip = &IO::Socket::inet_ntoa($ip);
12241: }
12242: }
12243: if ($ip) {
12244: @hosts = get_hosts_from_ip($ip);
12245: return $hosts[0];
12246: }
12247: return undef;
12248: }
12249:
12250: sub get_internet_names {
12251: my ($lonid) = @_;
12252: return if ($lonid eq '');
12253: my ($idnref,$cached)=
12254: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12255: if ($cached) {
12256: return $idnref;
12257: }
12258: my $ip = &get_host_ip($lonid);
12259: my @hosts = &get_hosts_from_ip($ip);
12260: my %iphost = &get_iphost();
12261: my (@idns,%seen);
12262: foreach my $id (@hosts) {
12263: my $dom = &host_domain($id);
12264: my $prim_id = &domain($dom,'primary');
12265: my $prim_ip = &get_host_ip($prim_id);
12266: next if ($seen{$prim_ip});
12267: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12268: foreach my $id (@{$iphost{$prim_ip}}) {
12269: my $intdom = &internet_dom($id);
12270: unless (grep(/^\Q$intdom\E$/,@idns)) {
12271: push(@idns,$intdom);
12272: }
12273: }
12274: }
12275: $seen{$prim_ip} = 1;
12276: }
12277: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12278: }
12279:
12280: }
12281:
12282: sub all_loncaparevs {
12283: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12284: }
12285:
12286: # ---------------------------------------------------------- Read loncaparev table
12287: {
12288: sub load_loncaparevs {
12289: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12290: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12291: while (my $configline=<$config>) {
12292: chomp($configline);
12293: my ($hostid,$loncaparev)=split(/:/,$configline);
12294: $loncaparevs{$hostid}=$loncaparev;
12295: }
12296: close($config);
12297: }
12298: }
12299: }
12300: }
12301:
12302: # ---------------------------------------------------------- Read serverhostID table
12303: {
12304: sub load_serverhomeIDs {
12305: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12306: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12307: while (my $configline=<$config>) {
12308: chomp($configline);
12309: my ($name,$id)=split(/:/,$configline);
12310: $serverhomeIDs{$name}=$id;
12311: }
12312: close($config);
12313: }
12314: }
12315: }
12316: }
12317:
12318:
12319: BEGIN {
12320:
12321: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12322: unless ($readit) {
12323: {
12324: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12325: %perlvar = (%perlvar,%{$configvars});
12326: }
12327:
12328:
12329: # ------------------------------------------------------ Read spare server file
12330: {
12331: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12332:
12333: while (my $configline=<$config>) {
12334: chomp($configline);
12335: if ($configline) {
12336: my ($host,$type) = split(':',$configline,2);
12337: if (!defined($type) || $type eq '') { $type = 'default' };
12338: push(@{ $spareid{$type} }, $host);
12339: }
12340: }
12341: close($config);
12342: }
12343: # ------------------------------------------------------------ Read permissions
12344: {
12345: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12346:
12347: while (my $configline=<$config>) {
12348: chomp($configline);
12349: if ($configline) {
12350: my ($role,$perm)=split(/ /,$configline);
12351: if ($perm ne '') { $pr{$role}=$perm; }
12352: }
12353: }
12354: close($config);
12355: }
12356:
12357: # -------------------------------------------- Read plain texts for permissions
12358: {
12359: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12360:
12361: while (my $configline=<$config>) {
12362: chomp($configline);
12363: if ($configline) {
12364: my ($short,@plain)=split(/:/,$configline);
12365: %{$prp{$short}} = ();
12366: if (@plain > 0) {
12367: $prp{$short}{'std'} = $plain[0];
12368: for (my $i=1; $i<@plain; $i++) {
12369: $prp{$short}{'alt'.$i} = $plain[$i];
12370: }
12371: }
12372: }
12373: }
12374: close($config);
12375: }
12376:
12377: # ---------------------------------------------------------- Read package table
12378: {
12379: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12380:
12381: while (my $configline=<$config>) {
12382: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12383: chomp($configline);
12384: my ($short,$plain)=split(/:/,$configline);
12385: my ($pack,$name)=split(/\&/,$short);
12386: if ($plain ne '') {
12387: $packagetab{$pack.'&'.$name.'&name'}=$name;
12388: $packagetab{$short}=$plain;
12389: }
12390: }
12391: close($config);
12392: }
12393:
12394: # ---------------------------------------------------------- Read loncaparev table
12395:
12396: &load_loncaparevs();
12397:
12398: # ---------------------------------------------------------- Read serverhostID table
12399:
12400: &load_serverhomeIDs();
12401:
12402: # ---------------------------------------------------------- Read releaseslist XML
12403: {
12404: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12405: if (-e $file) {
12406: my $parser = HTML::LCParser->new($file);
12407: while (my $token = $parser->get_token()) {
12408: if ($token->[0] eq 'S') {
12409: my $item = $token->[1];
12410: my $name = $token->[2]{'name'};
12411: my $value = $token->[2]{'value'};
12412: if ($item ne '' && $name ne '' && $value ne '') {
12413: my $release = $parser->get_text();
12414: $release =~ s/(^\s*|\s*$ )//gx;
12415: $needsrelease{$item.':'.$name.':'.$value} = $release;
12416: }
12417: }
12418: }
12419: }
12420: }
12421:
12422: # ---------------------------------------------------------- Read managers table
12423: {
12424: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12425: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12426: while (my $configline=<$config>) {
12427: chomp($configline);
12428: next if ($configline =~ /^\#/);
12429: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12430: $managerstab{$configline} = 1;
12431: }
12432: }
12433: close($config);
12434: }
12435: }
12436: }
12437:
12438: # ------------- set up temporary directory
12439: {
12440: $tmpdir = LONCAPA::tempdir();
12441:
12442: }
12443:
12444: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12445: 'compress_threshold'=> 20_000,
12446: });
12447:
12448: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12449: $dumpcount=0;
12450: $locknum=0;
12451:
12452: &logtouch();
12453: &logthis('<font color="yellow">INFO: Read configuration</font>');
12454: $readit=1;
12455: {
12456: use integer;
12457: my $test=(2**32)+1;
12458: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12459: &logthis(" Detected 64bit platform ($_64bit)");
12460: }
12461: }
12462: }
12463:
12464: 1;
12465: __END__
12466:
12467: =pod
12468:
12469: =head1 NAME
12470:
12471: Apache::lonnet - Subroutines to ask questions about things in the network.
12472:
12473: =head1 SYNOPSIS
12474:
12475: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12476:
12477: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12478:
12479: Common parameters:
12480:
12481: =over 4
12482:
12483: =item *
12484:
12485: $uname : an internal username (if $cname expecting a course Id specifically)
12486:
12487: =item *
12488:
12489: $udom : a domain (if $cdom expecting a course's domain specifically)
12490:
12491: =item *
12492:
12493: $symb : a resource instance identifier
12494:
12495: =item *
12496:
12497: $namespace : the name of a .db file that contains the data needed or
12498: being set.
12499:
12500: =back
12501:
12502: =head1 OVERVIEW
12503:
12504: lonnet provides subroutines which interact with the
12505: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12506: about classes, users, and resources.
12507:
12508: For many of these objects you can also use this to store data about
12509: them or modify them in various ways.
12510:
12511: =head2 Symbs
12512:
12513: To identify a specific instance of a resource, LON-CAPA uses symbols
12514: or "symbs"X<symb>. These identifiers are built from the URL of the
12515: map, the resource number of the resource in the map, and the URL of
12516: the resource itself. The latter is somewhat redundant, but might help
12517: if maps change.
12518:
12519: An example is
12520:
12521: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12522:
12523: The respective map entry is
12524:
12525: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12526: title="Problem 2">
12527: </resource>
12528:
12529: Symbs are used by the random number generator, as well as to store and
12530: restore data specific to a certain instance of for example a problem.
12531:
12532: =head2 Storing And Retrieving Data
12533:
12534: X<store()>X<cstore()>X<restore()>Three of the most important functions
12535: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12536: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12537: is is the non-critical message twin of cstore. These functions are for
12538: handlers to store a perl hash to a user's permanent data space in an
12539: easy manner, and to retrieve it again on another call. It is expected
12540: that a handler would use this once at the beginning to retrieve data,
12541: and then again once at the end to send only the new data back.
12542:
12543: The data is stored in the user's data directory on the user's
12544: homeserver under the ID of the course.
12545:
12546: The hash that is returned by restore will have all of the previous
12547: value for all of the elements of the hash.
12548:
12549: Example:
12550:
12551: #creating a hash
12552: my %hash;
12553: $hash{'foo'}='bar';
12554:
12555: #storing it
12556: &Apache::lonnet::cstore(\%hash);
12557:
12558: #changing a value
12559: $hash{'foo'}='notbar';
12560:
12561: #adding a new value
12562: $hash{'bar'}='foo';
12563: &Apache::lonnet::cstore(\%hash);
12564:
12565: #retrieving the hash
12566: my %history=&Apache::lonnet::restore();
12567:
12568: #print the hash
12569: foreach my $key (sort(keys(%history))) {
12570: print("\%history{$key} = $history{$key}");
12571: }
12572:
12573: Will print out:
12574:
12575: %history{1:foo} = bar
12576: %history{1:keys} = foo:timestamp
12577: %history{1:timestamp} = 990455579
12578: %history{2:bar} = foo
12579: %history{2:foo} = notbar
12580: %history{2:keys} = foo:bar:timestamp
12581: %history{2:timestamp} = 990455580
12582: %history{bar} = foo
12583: %history{foo} = notbar
12584: %history{timestamp} = 990455580
12585: %history{version} = 2
12586:
12587: Note that the special hash entries C<keys>, C<version> and
12588: C<timestamp> were added to the hash. C<version> will be equal to the
12589: total number of versions of the data that have been stored. The
12590: C<timestamp> attribute will be the UNIX time the hash was
12591: stored. C<keys> is available in every historical section to list which
12592: keys were added or changed at a specific historical revision of a
12593: hash.
12594:
12595: B<Warning>: do not store the hash that restore returns directly. This
12596: will cause a mess since it will restore the historical keys as if the
12597: were new keys. I.E. 1:foo will become 1:1:foo etc.
12598:
12599: Calling convention:
12600:
12601: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12602: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
12603:
12604: For more detailed information, see lonnet specific documentation.
12605:
12606: =head1 RETURN MESSAGES
12607:
12608: =over 4
12609:
12610: =item * B<con_lost>: unable to contact remote host
12611:
12612: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12613: when the connection is brought back up
12614:
12615: =item * B<con_failed>: unable to contact remote host and unable to save message
12616: for later delivery
12617:
12618: =item * B<error:>: an error a occurred, a description of the error follows the :
12619:
12620: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12621: that was requested
12622:
12623: =back
12624:
12625: =head1 PUBLIC SUBROUTINES
12626:
12627: =head2 Session Environment Functions
12628:
12629: =over 4
12630:
12631: =item *
12632: X<appenv()>
12633: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12634: the user envirnoment file, and will be restored for each access this
12635: user makes during this session, also modifies the %env for the current
12636: process. Optional rolesarrayref - if defined contains a reference to an array
12637: of roles which are exempt from the restriction on modifying user.role entries
12638: in the user's environment.db and in %env.
12639:
12640: =item *
12641: X<delenv()>
12642: B<delenv($delthis,$regexp)>: removes all items from the session
12643: environment file that begin with $delthis. If the
12644: optional second arg - $regexp - is true, $delthis is treated as a
12645: regular expression, otherwise \Q$delthis\E is used.
12646: The values are also deleted from the current processes %env.
12647:
12648: =item * get_env_multiple($name)
12649:
12650: gets $name from the %env hash, it seemlessly handles the cases where multiple
12651: values may be defined and end up as an array ref.
12652:
12653: returns an array of values
12654:
12655: =back
12656:
12657: =head2 User Information
12658:
12659: =over 4
12660:
12661: =item *
12662: X<queryauthenticate()>
12663: B<queryauthenticate($uname,$udom)>: try to determine user's current
12664: authentication scheme
12665:
12666: =item *
12667: X<authenticate()>
12668: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12669: authenticate user from domain's lib servers (first use the current
12670: one). C<$upass> should be the users password.
12671: $checkdefauth is optional (value is 1 if a check should be made to
12672: authenticate user using default authentication method, and allow
12673: account creation if username does not have account in the domain).
12674: $clientcancheckhost is optional (value is 1 if checking whether the
12675: server can host will occur on the client side in lonauth.pm).
12676:
12677: =item *
12678: X<homeserver()>
12679: B<homeserver($uname,$udom)>: find the server which has
12680: the user's directory and files (there must be only one), this caches
12681: the answer, and also caches if there is a borken connection.
12682:
12683: =item *
12684: X<idget()>
12685: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12686: (IDs are a unique resource in a domain, there must be only 1 ID per
12687: username, and only 1 username per ID in a specific domain) (returns
12688: hash: id=>name,id=>name)
12689:
12690: =item *
12691: X<idrget()>
12692: B<idrget($udom,@unames)>: find the IDs behind a list of
12693: usernames (returns hash: name=>id,name=>id)
12694:
12695: =item *
12696: X<idput()>
12697: B<idput($udom,%ids)>: store away a list of names and associated IDs
12698:
12699: =item *
12700: X<rolesinit()>
12701: B<rolesinit($udom,$username)>: get user privileges.
12702: returns user role, first access and timer interval hashes
12703:
12704: =item *
12705: X<privileged()>
12706: B<privileged($username,$domain)>: returns a true if user has a
12707: privileged and active role (i.e. su or dc), false otherwise.
12708:
12709: =item *
12710: X<getsection()>
12711: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12712: course $cname, return section name/number or '' for "not in course"
12713: and '-1' for "no section"
12714:
12715: =item *
12716: X<userenvironment()>
12717: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12718: passed in @what from the requested user's environment, returns a hash
12719:
12720: =item *
12721: X<userlog_query()>
12722: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12723: activity.log file. %filters defines filters applied when parsing the
12724: log file. These can be start or end timestamps, or the type of action
12725: - log to look for Login or Logout events, check for Checkin or
12726: Checkout, role for role selection. The response is in the form
12727: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12728: escaped strings of the action recorded in the activity.log file.
12729:
12730: =back
12731:
12732: =head2 User Roles
12733:
12734: =over 4
12735:
12736: =item *
12737:
12738: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12739: F: full access
12740: U,I,K: authentication modes (cxx only)
12741: '': forbidden
12742: 1: user needs to choose course
12743: 2: browse allowed
12744: A: passphrase authentication needed
12745:
12746: =item *
12747:
12748: constructaccess($url,$setpriv) : check for access to construction space URL
12749:
12750: See if the owner domain and name in the URL match those in the
12751: expected environment. If so, return three element list
12752: ($ownername,$ownerdomain,$ownerhome).
12753:
12754: Otherwise return the null string.
12755:
12756: If second argument 'setpriv' is true, it assigns the privileges,
12757: and returns the same three element list, unless the owner has
12758: blocked "ad hoc" Domain Coordinator access to the Author Space,
12759: in which case the null string is returned.
12760:
12761: =item *
12762:
12763: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12764: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12765: and course level
12766:
12767: =item *
12768:
12769: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12770: (rolesplain.tab); plain text explanation of a user role term.
12771: $type is Course (default) or Community.
12772: If $forcedefault evaluates to true, text returned will be default
12773: text for $type. Otherwise, if this is a course, the text returned
12774: will be a custom name for the role (if defined in the course's
12775: environment). If no custom name is defined the default is returned.
12776:
12777: =item *
12778:
12779: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12780: All arguments are optional. Returns a hash of a roles, either for
12781: co-author/assistant author roles for a user's Construction Space
12782: (default), or if $context is 'userroles', roles for the user himself,
12783: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12784: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12785: For each key, value is set to colon-separated start and end times for
12786: the role. If no username and domain are specified, will default to
12787: current user/domain. Types, roles, and roledoms are references to arrays
12788: of role statuses (active, future or previous), roles
12789: (e.g., cc,in, st etc.) and domains of the roles which can be used
12790: to restrict the list of roles reported. If no array ref is
12791: provided for types, will default to return only active roles.
12792:
12793: =item *
12794:
12795: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12796: user: $uname:$udom has a role in the course: $cdom_$cnum.
12797:
12798: Additional optional arguments are: $type (if role checking is to be restricted
12799: to certain user status types -- previous (expired roles), active (currently
12800: available roles) or future (roles available in the future), and
12801: $hideprivileged -- if true will not report course roles for users who
12802: have active Domain Coordinator role in course's domain or in additional
12803: domains (specified in 'Domains to check for privileged users' in course
12804: environment -- set via: Course Settings -> Classlists and staff listing).
12805:
12806: =item *
12807:
12808: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12809: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12810: $possdomains and $possroles are optional array refs -- to domains to check and
12811: roles to check. If $possdomains is not specified, a dump will be done of the
12812: users' roles.db to check for a dc or su role in any domain. This can be
12813: time consuming if &privileged is called repeatedly (e.g., when displaying a
12814: classlist), so in such cases, supplying a $possdomains array is preferred, as
12815: this then allows &privileged_by_domain() to be used, which caches the identity
12816: of privileged users, eliminating the need for repeated calls to &dump().
12817:
12818: =item *
12819:
12820: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12821: where the outer hash keys are domains specified in the $possdomains array ref,
12822: next inner hash keys are privileged roles specified in the $roles array ref,
12823: and the innermost hash contains key = value pairs for username:domain = end:start
12824: for active or future "privileged" users with that role in that domain. To avoid
12825: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12826: innerhash are cached using priv_$role and $dom as the identifiers.
12827:
12828: =back
12829:
12830: =head2 User Modification
12831:
12832: =over 4
12833:
12834: =item *
12835:
12836: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12837: user for the level given by URL. Optional start and end dates (leave empty
12838: string or zero for "no date")
12839:
12840: =item *
12841:
12842: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12843: change a users, password, possible return values are: ok,
12844: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12845: refused
12846:
12847: =item *
12848:
12849: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12850:
12851: =item *
12852:
12853: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12854: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12855:
12856: will update user information (firstname,middlename,lastname,generation,
12857: permanentemail), and if forceid is true, student/employee ID also.
12858: A user's institutional affiliation(s) can also be updated.
12859: User information fields will not be overwritten with empty entries
12860: unless the field is included in the $candelete array reference.
12861: This array is included when a single user is modified via "Manage Users",
12862: or when Autoupdate.pl is run by cron in a domain.
12863:
12864: =item *
12865:
12866: modifystudent
12867:
12868: modify a student's enrollment and identification information.
12869: The course id is resolved based on the current user's environment.
12870: This means the invoking user must be a course coordinator or otherwise
12871: associated with a course.
12872:
12873: This call is essentially a wrapper for lonnet::modifyuser and
12874: lonnet::modify_student_enrollment
12875:
12876: Inputs:
12877:
12878: =over 4
12879:
12880: =item B<$udom> Student's loncapa domain
12881:
12882: =item B<$uname> Student's loncapa login name
12883:
12884: =item B<$uid> Student/Employee ID
12885:
12886: =item B<$umode> Student's authentication mode
12887:
12888: =item B<$upass> Student's password
12889:
12890: =item B<$first> Student's first name
12891:
12892: =item B<$middle> Student's middle name
12893:
12894: =item B<$last> Student's last name
12895:
12896: =item B<$gene> Student's generation
12897:
12898: =item B<$usec> Student's section in course
12899:
12900: =item B<$end> Unix time of the roles expiration
12901:
12902: =item B<$start> Unix time of the roles start date
12903:
12904: =item B<$forceid> If defined, allow $uid to be changed
12905:
12906: =item B<$desiredhome> server to use as home server for student
12907:
12908: =item B<$email> Student's permanent e-mail address
12909:
12910: =item B<$type> Type of enrollment (auto or manual)
12911:
12912: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12913:
12914: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12915:
12916: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12917:
12918: =item B<$context> role change context (shown in User Management Logs display in a course)
12919:
12920: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12921:
12922: =item B<$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.
12923:
12924: =back
12925:
12926: =item *
12927:
12928: modify_student_enrollment
12929:
12930: Change a student's enrollment status in a class. The environment variable
12931: 'role.request.course' must be defined for this function to proceed.
12932:
12933: Inputs:
12934:
12935: =over 4
12936:
12937: =item $udom, student's domain
12938:
12939: =item $uname, student's name
12940:
12941: =item $uid, student's user id
12942:
12943: =item $first, student's first name
12944:
12945: =item $middle
12946:
12947: =item $last
12948:
12949: =item $gene
12950:
12951: =item $usec
12952:
12953: =item $end
12954:
12955: =item $start
12956:
12957: =item $type
12958:
12959: =item $locktype
12960:
12961: =item $cid
12962:
12963: =item $selfenroll
12964:
12965: =item $context
12966:
12967: =item $credits, number of credits student will earn from this class
12968:
12969: =back
12970:
12971:
12972: =item *
12973:
12974: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12975: custom role; give a custom role to a user for the level given by URL. Specify
12976: name and domain of role author, and role name
12977:
12978: =item *
12979:
12980: revokerole($udom,$uname,$url,$role) : revoke a role for url
12981:
12982: =item *
12983:
12984: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12985:
12986: =back
12987:
12988: =head2 Course Infomation
12989:
12990: =over 4
12991:
12992: =item *
12993:
12994: coursedescription($courseid,$options) : returns a hash of information about the
12995: specified course id, including all environment settings for the
12996: course, the description of the course will be in the hash under the
12997: key 'description'
12998:
12999: $options is an optional parameter that if supplied is a hash reference that controls
13000: what how this function works. It has the following key/values:
13001:
13002: =over 4
13003:
13004: =item freshen_cache
13005:
13006: If defined, and the environment cache for the course is valid, it is
13007: returned in the returned hash.
13008:
13009: =item one_time
13010:
13011: If defined, the last cache time is set to _now_
13012:
13013: =item user
13014:
13015: If defined, the supplied username is used instead of the current user.
13016:
13017:
13018: =back
13019:
13020: =item *
13021:
13022: resdata($name,$domain,$type,@which) : request for current parameter
13023: setting for a specific $type, where $type is either 'course' or 'user',
13024: @what should be a list of parameters to ask about. This routine caches
13025: answers for 10 minutes.
13026:
13027: =item *
13028:
13029: get_courseresdata($courseid, $domain) : dump the entire course resource
13030: data base, returning a hash that is keyed by the resource name and has
13031: values that are the resource value. I believe that the timestamps and
13032: versions are also returned.
13033:
13034: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13035: supplemental content area. This routine caches the number of files for
13036: 10 minutes.
13037:
13038: =back
13039:
13040: =head2 Course Modification
13041:
13042: =over 4
13043:
13044: =item *
13045:
13046: writecoursepref($courseid,%prefs) : write preferences (environment
13047: database) for a course
13048:
13049: =item *
13050:
13051: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13052:
13053: =item *
13054:
13055: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13056:
13057: =item *
13058:
13059: is_course($courseid), is_course($cdom, $cnum)
13060:
13061: Accepts either a combined $courseid (in the form of domain_courseid) or the
13062: two component version $cdom, $cnum. It checks if the specified course exists.
13063:
13064: Returns:
13065: undef if the course doesn't exist, otherwise
13066: in scalar context the combined courseid.
13067: in list context the two components of the course identifier, domain and
13068: courseid.
13069:
13070: =back
13071:
13072: =head2 Resource Subroutines
13073:
13074: =over 4
13075:
13076: =item *
13077:
13078: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13079:
13080: =item *
13081:
13082: repcopy($filename) : subscribes to the requested file, and attempts to
13083: replicate from the owning library server, Might return
13084: 'unavailable', 'not_found', 'forbidden', 'ok', or
13085: 'bad_request', also attempts to grab the metadata for the
13086: resource. Expects the local filesystem pathname
13087: (/home/httpd/html/res/....)
13088:
13089: =back
13090:
13091: =head2 Resource Information
13092:
13093: =over 4
13094:
13095: =item *
13096:
13097: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13098: and returns the value of a variety of different possible values,
13099: $varname should be a request string, and the other parameters can be
13100: used to specify who and what one is asking about. Ordinarily, $cid
13101: does not need to be specified, as it is retrived from
13102: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13103: within lonuserstate::loadmap() when initializing a course, before
13104: $env{'request.course.id'} has been set, so it needs to be provided
13105: in that one case.
13106:
13107: Possible values for $varname are environment.lastname (or other item
13108: from the envirnment hash), user.name (or someother aspect about the
13109: user), resource.0.maxtries (or some other part and parameter of a
13110: resource)
13111:
13112: =item *
13113:
13114: directcondval($number) : get current value of a condition; reads from a state
13115: string
13116:
13117: =item *
13118:
13119: condval($condidx) : value of condition index based on state
13120:
13121: =item *
13122:
13123: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13124: resource's metadata, $what should be either a specific key, or either
13125: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13126: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13127:
13128: this function automatically caches all requests
13129:
13130: =item *
13131:
13132: metadata_query($query,$custom,$customshow) : make a metadata query against the
13133: network of library servers; returns file handle of where SQL and regex results
13134: will be stored for query
13135:
13136: =item *
13137:
13138: symbread($filename) : return symbolic list entry (filename argument optional);
13139: returns the data handle
13140:
13141: =item *
13142:
13143: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13144: and is a possible symb for the URL in $thisfn, and if is an encrypted
13145: resource that the user accessed using /enc/ returns a 1 on success, 0
13146: on failure, user must be in a course, as it assumes the existence of
13147: the course initial hash, and uses $env('request.course.id'}. The third
13148: arg is an optional reference to a scalar. If this arg is passed in the
13149: call to symbverify, it will be set to 1 if the symb has been set to be
13150: encrypted; otherwise it will be null.
13151:
13152: =item *
13153:
13154: symbclean($symb) : removes versions numbers from a symb, returns the
13155: cleaned symb
13156:
13157: =item *
13158:
13159: is_on_map($uri) : checks if the $uri is somewhere on the current
13160: course map, user must be in a course for it to work.
13161:
13162: =item *
13163:
13164: numval($salt) : return random seed value (addend for rndseed)
13165:
13166: =item *
13167:
13168: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13169: a random seed, all arguments are optional, if they aren't sent it uses the
13170: environment to derive them. Note: if symb isn't sent and it can't get one
13171: from &symbread it will use the current time as its return value
13172:
13173: =item *
13174:
13175: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13176: unfakeable, receipt
13177:
13178: =item *
13179:
13180: receipt() : API to ireceipt working off of env values; given out to users
13181:
13182: =item *
13183:
13184: countacc($url) : count the number of accesses to a given URL
13185:
13186: =item *
13187:
13188: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13189:
13190: =item *
13191:
13192: checkin($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 $tcrsid)
13193:
13194: =item *
13195:
13196: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13197:
13198: =item *
13199:
13200: devalidate($symb) : devalidate temporary spreadsheet calculations,
13201: forcing spreadsheet to reevaluate the resource scores next time.
13202:
13203: =item *
13204:
13205: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13206: when viewing in course context.
13207:
13208: input: six args -- filename (decluttered), course number, course domain,
13209: url, symb (if registered) and group (if this is a
13210: group item -- e.g., bulletin board, group page etc.).
13211:
13212: output: array of five scalars --
13213: $cfile -- url for file editing if editable on current server
13214: $home -- homeserver of resource (i.e., for author if published,
13215: or course if uploaded.).
13216: $switchserver -- 1 if server switch will be needed.
13217: $forceedit -- 1 if icon/link should be to go to edit mode
13218: $forceview -- 1 if icon/link should be to go to view mode
13219:
13220: =item *
13221:
13222: is_course_upload($file,$cnum,$cdom)
13223:
13224: Used in course context to determine if current file was uploaded to
13225: the course (i.e., would be found in /userfiles/docs on the course's
13226: homeserver.
13227:
13228: input: 3 args -- filename (decluttered), course number and course domain.
13229: output: boolean -- 1 if file was uploaded.
13230:
13231: =back
13232:
13233: =head2 Storing/Retreiving Data
13234:
13235: =over 4
13236:
13237: =item *
13238:
13239: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
13240: permanently for this url; hashref needs to be given and should be a \%hashname;
13241: the remaining args aren't required and if they aren't passed or are '' they will
13242: be derived from the env (with the exception of $laststore, which is an
13243: optional arg used when a user's submission is stored in grading).
13244: $laststore is $version=$timestamp, where $version is the most recent version
13245: number retrieved for the corresponding $symb in the $namespace db file, and
13246: $timestamp is the timestamp for that transaction (UNIX time).
13247: $laststore is currently only passed when cstore() is called by
13248: structuretags::finalize_storage().
13249:
13250: =item *
13251:
13252: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
13253: but uses critical subroutine
13254:
13255: =item *
13256:
13257: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13258: all args are optional
13259:
13260: =item *
13261:
13262: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13263: dumps the complete (or key matching regexp) namespace into a hash
13264: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13265: normally &store()ed into
13266:
13267: $range should be either an integer '100' (give me the first 100
13268: matching records)
13269: or be two integers sperated by a - with no spaces
13270: '30-50' (give me the 30th through the 50th matching
13271: records)
13272:
13273:
13274: =item *
13275:
13276: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
13277: replaces a &store() version of data with a replacement set of data
13278: for a particular resource in a namespace passed in the $storehash hash
13279: reference. If $tolog is true, the transaction is logged in the courselog
13280: with an action=PUTSTORE.
13281:
13282: =item *
13283:
13284: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13285: works very similar to store/cstore, but all data is stored in a
13286: temporary location and can be reset using tmpreset, $storehash should
13287: be a hash reference, returns nothing on success
13288:
13289: =item *
13290:
13291: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13292: similar to restore, but all data is stored in a temporary location and
13293: can be reset using tmpreset. Returns a hash of values on success,
13294: error string otherwise.
13295:
13296: =item *
13297:
13298: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13299: deltes all keys for $symb form the temporary storage hash.
13300:
13301: =item *
13302:
13303: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13304: reference filled in from namesp ($udom and $uname are optional)
13305:
13306: =item *
13307:
13308: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13309: namesp ($udom and $uname are optional)
13310:
13311: =item *
13312:
13313: dump($namespace,$udom,$uname,$regexp,$range) :
13314: dumps the complete (or key matching regexp) namespace into a hash
13315: ($udom, $uname, $regexp, $range are optional)
13316:
13317: $range should be either an integer '100' (give me the first 100
13318: matching records)
13319: or be two integers sperated by a - with no spaces
13320: '30-50' (give me the 30th through the 50th matching
13321: records)
13322: =item *
13323:
13324: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13325: $store can be a scalar, an array reference, or if the amount to be
13326: incremented is > 1, a hash reference.
13327:
13328: ($udom and $uname are optional)
13329:
13330: =item *
13331:
13332: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13333: ($udom and $uname are optional)
13334:
13335: =item *
13336:
13337: cput($namespace,$storehash,$udom,$uname) : critical put
13338: ($udom and $uname are optional)
13339:
13340: =item *
13341:
13342: newput($namespace,$storehash,$udom,$uname) :
13343:
13344: Attempts to store the items in the $storehash, but only if they don't
13345: currently exist, if this succeeds you can be certain that you have
13346: successfully created a new key value pair in the $namespace db.
13347:
13348:
13349: Args:
13350: $namespace: name of database to store values to
13351: $storehash: hashref to store to the db
13352: $udom: (optional) domain of user containing the db
13353: $uname: (optional) name of user caontaining the db
13354:
13355: Returns:
13356: 'ok' -> succeeded in storing all keys of $storehash
13357: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13358: least <key> already existed in the db (other
13359: requested keys may also already exist)
13360: 'error: <msg>' -> unable to tie the DB or other error occurred
13361: 'con_lost' -> unable to contact request server
13362: 'refused' -> action was not allowed by remote machine
13363:
13364:
13365: =item *
13366:
13367: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13368: reference filled in from namesp (encrypts the return communication)
13369: ($udom and $uname are optional)
13370:
13371: =item *
13372:
13373: log($udom,$name,$home,$message) : write to permanent log for user; use
13374: critical subroutine
13375:
13376: =item *
13377:
13378: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13379: array reference filled in from namespace found in domain level on either
13380: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13381:
13382: =item *
13383:
13384: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13385: domain level either on specified domain server ($uhome) or primary domain
13386: server ($udom and $uhome are optional)
13387:
13388: =item *
13389:
13390: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
13391: for: authentication, language, quotas, timezone, date locale, and portal URL in
13392: the target domain.
13393:
13394: May also include additional key => value pairs for the following groups:
13395:
13396: =over
13397:
13398: =item
13399: disk quotas (MB allocated by default to portfolios and authoring spaces).
13400:
13401: =over
13402:
13403: =item defaultquota, authorquota
13404:
13405: =back
13406:
13407: =item
13408: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
13409: portfolio for users).
13410:
13411: =over
13412:
13413: =item
13414: aboutme, blog, webdav, portfolio
13415:
13416: =back
13417:
13418: =item
13419: requestcourses: ability to request courses, and how requests are processed.
13420:
13421: =over
13422:
13423: =item
13424: official, unofficial, community, textbook
13425:
13426: =back
13427:
13428: =item
13429: inststatus: types of institutional affiliation, and order in which they are displayed.
13430:
13431: =over
13432:
13433: =item
13434: inststatustypes, inststatusorder, inststatusguest
13435:
13436: =back
13437:
13438: =item
13439: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
13440: for course's uploaded content.
13441:
13442: =over
13443:
13444: =item
13445: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
13446: communityquota, textbookquota
13447:
13448: =back
13449:
13450: =item
13451: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
13452: on your servers.
13453:
13454: =over
13455:
13456: =item
13457: remotesessions, hostedsessions
13458:
13459: =back
13460:
13461: =back
13462:
13463: In cases where a domain coordinator has never used the "Set Domain Configuration"
13464: utility to create a configuration.db file on a domain's primary library server
13465: only the following domain defaults: auth_def, auth_arg_def, lang_def
13466: -- corresponding values are authentication type (internal, krb4, krb5,
13467: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
13468: will be available. Values are retrieved from cache (if current), unless the
13469: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
13470: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
13471:
13472: Typical usage:
13473:
13474: %domdefaults = &get_domain_defaults($target_domain);
13475:
13476: =back
13477:
13478: =head2 Network Status Functions
13479:
13480: =over 4
13481:
13482: =item *
13483:
13484: dirlist() : return directory list based on URI (first arg).
13485:
13486: Inputs: 1 required, 5 optional.
13487:
13488: =over
13489:
13490: =item
13491: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13492:
13493: =item
13494: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13495:
13496: =item
13497: $username - username of user/course to be listed. Extracted from $uri if absent.
13498:
13499: =item
13500: $getpropath - boolean: 1 if prepend path using &propath().
13501:
13502: =item
13503: $getuserdir - boolean: 1 if prepend path for "userfiles".
13504:
13505: =item
13506: $alternateRoot - path to prepend in place of path from $uri.
13507:
13508: =back
13509:
13510: Returns: Array of up to two items.
13511:
13512: =over
13513:
13514: a reference to an array of files/subdirectories
13515:
13516: =over
13517:
13518: Each element in the array of files/subdirectories is a & separated list of
13519: item name and the result of running stat on the item. If dirlist was requested
13520: for a file instead of a directory, the item name will be ''. For a directory
13521: listing, if the item is a metadata file, the element will end &N&M
13522: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13523: default copyright set (1).
13524:
13525: =back
13526:
13527: a scalar containing error condition (if encountered).
13528:
13529: =over
13530:
13531: =item
13532: no_host (no homeserver identified for $username:$domain).
13533:
13534: =item
13535: no_such_host (server contacted for listing not identified as valid host).
13536:
13537: =item
13538: con_lost (connection to remote server failed).
13539:
13540: =item
13541: refused (invalid $username:$domain received on lond side).
13542:
13543: =item
13544: no_such_dir (directory at specified path on lond side does not exist).
13545:
13546: =item
13547: empty (directory at specified path on lond side is empty).
13548:
13549: =over
13550:
13551: This is currently not encountered because the &ls3, &ls2,
13552: &ls (_handler) routines on the lond side do not filter out
13553: . and .. from a directory listing.
13554:
13555: =back
13556:
13557: =back
13558:
13559: =back
13560:
13561: =item *
13562:
13563: spareserver() : find server with least workload from spare.tab
13564:
13565:
13566: =item *
13567:
13568: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13569: if there is no corresponding loncapa host.
13570:
13571: =back
13572:
13573:
13574: =head2 Apache Request
13575:
13576: =over 4
13577:
13578: =item *
13579:
13580: ssi($url,%hash) : server side include, does a complete request cycle on url to
13581: localhost, posts hash
13582:
13583: =back
13584:
13585: =head2 Data to String to Data
13586:
13587: =over 4
13588:
13589: =item *
13590:
13591: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13592: and '&' separators, supports elements that are arrayrefs and hashrefs
13593:
13594: =item *
13595:
13596: hashref2str($hashref) : convert a hashref into a string complete with
13597: escaping and '=' and '&' separators, supports elements that are
13598: arrayrefs and hashrefs
13599:
13600: =item *
13601:
13602: arrayref2str($arrayref) : convert an arrayref into a string complete
13603: with escaping and '&' separators, supports elements that are arrayrefs
13604: and hashrefs
13605:
13606: =item *
13607:
13608: str2hash($string) : convert string to hash using unescaping and
13609: splitting on '=' and '&', supports elements that are arrayrefs and
13610: hashrefs
13611:
13612: =item *
13613:
13614: str2array($string) : convert string to hash using unescaping and
13615: splitting on '&', supports elements that are arrayrefs and hashrefs
13616:
13617: =back
13618:
13619: =head2 Logging Routines
13620:
13621:
13622: These routines allow one to make log messages in the lonnet.log and
13623: lonnet.perm logfiles.
13624:
13625: =over 4
13626:
13627: =item *
13628:
13629: logtouch() : make sure the logfile, lonnet.log, exists
13630:
13631: =item *
13632:
13633: logthis() : append message to the normal lonnet.log file, it gets
13634: preiodically rolled over and deleted.
13635:
13636: =item *
13637:
13638: logperm() : append a permanent message to lonnet.perm.log, this log
13639: file never gets deleted by any automated portion of the system, only
13640: messages of critical importance should go in here.
13641:
13642:
13643: =back
13644:
13645: =head2 General File Helper Routines
13646:
13647: =over 4
13648:
13649: =item *
13650:
13651: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13652: (a) files in /uploaded
13653: (i) If a local copy of the file exists -
13654: compares modification date of local copy with last-modified date for
13655: definitive version stored on home server for course. If local copy is
13656: stale, requests a new version from the home server and stores it.
13657: If the original has been removed from the home server, then local copy
13658: is unlinked.
13659: (ii) If local copy does not exist -
13660: requests the file from the home server and stores it.
13661:
13662: If $caller is 'uploadrep':
13663: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13664: for request for files originally uploaded via DOCS.
13665: - returns 'ok' if fresh local copy now available, -1 otherwise.
13666:
13667: Otherwise:
13668: This indicates a call from the content generation phase of the request.
13669: - returns the entire contents of the file or -1.
13670:
13671: (b) files in /res
13672: - returns the entire contents of a file or -1;
13673: it properly subscribes to and replicates the file if neccessary.
13674:
13675:
13676: =item *
13677:
13678: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13679: reference
13680:
13681: returns either a stat() list of data about the file or an empty list
13682: if the file doesn't exist or couldn't find out about it (connection
13683: problems or user unknown)
13684:
13685: =item *
13686:
13687: filelocation($dir,$file) : returns file system location of a file
13688: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13689: directory that relative $file lookups are to looked in ($dir of /a/dir
13690: and a file of ../bob will become /a/bob)
13691:
13692: =item *
13693:
13694: hreflocation($dir,$file) : returns file system location or a URL; same as
13695: filelocation except for hrefs
13696:
13697: =item *
13698:
13699: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
13700: also removes beginning /home/httpd/html unless /priv/ follows it.
13701:
13702: =back
13703:
13704: =head2 Usererfile file routines (/uploaded*)
13705:
13706: =over 4
13707:
13708: =item *
13709:
13710: userfileupload(): main rotine for putting a file in a user or course's
13711: filespace, arguments are,
13712:
13713: formname - required - this is the name of the element in $env where the
13714: filename, and the contents of the file to create/modifed exist
13715: the filename is in $env{'form.'.$formname.'.filename'} and the
13716: contents of the file is located in $env{'form.'.$formname}
13717: context - if coursedoc, store the file in the course of the active role
13718: of the current user;
13719: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13720: if 'canceloverwrite': delete file in tmp/overwrites directory
13721: subdir - required - subdirectory to put the file in under ../userfiles/
13722: if undefined, it will be placed in "unknown"
13723:
13724: (This routine calls clean_filename() to remove any dangerous
13725: characters from the filename, and then calls finuserfileupload() to
13726: complete the transaction)
13727:
13728: returns either the url of the uploaded file (/uploaded/....) if successful
13729: and /adm/notfound.html if unsuccessful
13730:
13731: =item *
13732:
13733: clean_filename(): routine for cleaing a filename up for storage in
13734: userfile space, argument is:
13735:
13736: filename - proposed filename
13737:
13738: returns: the new clean filename
13739:
13740: =item *
13741:
13742: finishuserfileupload(): routine that creates and sends the file to
13743: userspace, probably shouldn't be called directly
13744:
13745: docuname: username or courseid of destination for the file
13746: docudom: domain of user/course of destination for the file
13747: formname: same as for userfileupload()
13748: fname: filename (including subdirectories) for the file
13749: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13750: allfiles: reference to hash used to store objects found by parser
13751: codebase: reference to hash used for codebases of java objects found by parser
13752: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13753: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13754: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13755: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13756: context: if 'overwrite', will move the uploaded file from its temporary location to
13757: userfiles to facilitate overwriting a previously uploaded file with same name.
13758: mimetype: reference to scalar to accommodate mime type determined
13759: from File::MMagic if $parser = parse.
13760:
13761: returns either the url of the uploaded file (/uploaded/....) if successful
13762: and /adm/notfound.html if unsuccessful (or an error message if context
13763: was 'overwrite').
13764:
13765:
13766: =item *
13767:
13768: renameuserfile(): renames an existing userfile to a new name
13769:
13770: Args:
13771: docuname: username or courseid of destination for the file
13772: docudom: domain of user/course of destination for the file
13773: old: current file name (including any subdirs under userfiles)
13774: new: desired file name (including any subdirs under userfiles)
13775:
13776: =item *
13777:
13778: mkdiruserfile(): creates a directory is a userfiles dir
13779:
13780: Args:
13781: docuname: username or courseid of destination for the file
13782: docudom: domain of user/course of destination for the file
13783: dir: dir to create (including any subdirs under userfiles)
13784:
13785: =item *
13786:
13787: removeuserfile(): removes a file that exists in userfiles
13788:
13789: Args:
13790: docuname: username or courseid of destination for the file
13791: docudom: domain of user/course of destination for the file
13792: fname: filname to delete (including any subdirs under userfiles)
13793:
13794: =item *
13795:
13796: removeuploadedurl(): convience function for removeuserfile()
13797:
13798: Args:
13799: url: a full /uploaded/... url to delete
13800:
13801: =item *
13802:
13803: get_portfile_permissions():
13804: Args:
13805: domain: domain of user or course contain the portfolio files
13806: user: name of user or num of course contain the portfolio files
13807: Returns:
13808: hashref of a dump of the proper file_permissions.db
13809:
13810:
13811: =item *
13812:
13813: get_access_controls():
13814:
13815: Args:
13816: current_permissions: the hash ref returned from get_portfile_permissions()
13817: group: (optional) the group you want the files associated with
13818: file: (optional) the file you want access info on
13819:
13820: Returns:
13821: a hash (keys are file names) of hashes containing
13822: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13823: values are XML containing access control settings (see below)
13824:
13825: Internal notes:
13826:
13827: access controls are stored in file_permissions.db as key=value pairs.
13828: key -> path to file/file_name\0uniqueID:scope_end_start
13829: where scope -> public,guest,course,group,domains or users.
13830: end -> UNIX time for end of access (0 -> no end date)
13831: start -> UNIX time for start of access
13832:
13833: value -> XML description of access control
13834: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13835: <start></start>
13836: <end></end>
13837:
13838: <password></password> for scope type = guest
13839:
13840: <domain></domain> for scope type = course or group
13841: <number></number>
13842: <roles id="">
13843: <role></role>
13844: <access></access>
13845: <section></section>
13846: <group></group>
13847: </roles>
13848:
13849: <dom></dom> for scope type = domains
13850:
13851: <users> for scope type = users
13852: <user>
13853: <uname></uname>
13854: <udom></udom>
13855: </user>
13856: </users>
13857: </scope>
13858:
13859: Access data is also aggregated for each file in an additional key=value pair:
13860: key -> path to file/file_name\0accesscontrol
13861: value -> reference to hash
13862: hash contains key = value pairs
13863: where key = uniqueID:scope_end_start
13864: value = UNIX time record was last updated
13865:
13866: Used to improve speed of look-ups of access controls for each file.
13867:
13868: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13869:
13870: =item *
13871:
13872: modify_access_controls():
13873:
13874: Modifies access controls for a portfolio file
13875: Args
13876: 1. file name
13877: 2. reference to hash of required changes,
13878: 3. domain
13879: 4. username
13880: where domain,username are the domain of the portfolio owner
13881: (either a user or a course)
13882:
13883: Returns:
13884: 1. result of additions or updates ('ok' or 'error', with error message).
13885: 2. result of deletions ('ok' or 'error', with error message).
13886: 3. reference to hash of any new or updated access controls.
13887: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13888: key = integer (inbound ID)
13889: value = uniqueID
13890:
13891: =item *
13892:
13893: get_timebased_id():
13894:
13895: Attempts to get a unique timestamp-based suffix for use with items added to a
13896: course via the Course Editor (e.g., folders, composite pages,
13897: group bulletin boards).
13898:
13899: Args: (first three required; six others optional)
13900:
13901: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13902: docssequence, or name of group
13903:
13904: 2. keyid (alphanumeric): name of temporary locking key in hash,
13905: e.g., num, boardids
13906:
13907: 3. namespace: name of gdbm file used to store suffixes already assigned;
13908: file will be named nohist_namespace.db
13909:
13910: 4. cdom: domain of course; default is current course domain from %env
13911:
13912: 5. cnum: course number; default is current course number from %env
13913:
13914: 6. idtype: set to concat if an additional digit is to be appended to the
13915: unix timestamp to form the suffix, if the plain timestamp is already
13916: in use. Default is to not do this, but simply increment the unix
13917: timestamp by 1 until a unique key is obtained.
13918:
13919: 7. who: holder of locking key; defaults to user:domain for user.
13920:
13921: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13922: retrying); default is 3.
13923:
13924: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13925:
13926: Returns:
13927:
13928: 1. suffix obtained (numeric)
13929:
13930: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13931:
13932: 3. error: contains (localized) error message if an error occurred.
13933:
13934:
13935: =back
13936:
13937: =head2 HTTP Helper Routines
13938:
13939: =over 4
13940:
13941: =item *
13942:
13943: escape() : unpack non-word characters into CGI-compatible hex codes
13944:
13945: =item *
13946:
13947: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13948:
13949: =back
13950:
13951: =head1 PRIVATE SUBROUTINES
13952:
13953: =head2 Underlying communication routines (Shouldn't call)
13954:
13955: =over 4
13956:
13957: =item *
13958:
13959: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13960:
13961: =item *
13962:
13963: reply() : uses subreply to send a message to remote machine, logs all failures
13964:
13965: =item *
13966:
13967: critical() : passes a critical message to another server; if cannot
13968: get through then place message in connection buffer directory and
13969: returns con_delayed, if incapable of saving message, returns
13970: con_failed
13971:
13972: =item *
13973:
13974: reconlonc() : tries to reconnect lonc client processes.
13975:
13976: =back
13977:
13978: =head2 Resource Access Logging
13979:
13980: =over 4
13981:
13982: =item *
13983:
13984: flushcourselogs() : flush (save) buffer logs and access logs
13985:
13986: =item *
13987:
13988: courselog($what) : save message for course in hash
13989:
13990: =item *
13991:
13992: courseacclog($what) : save message for course using &courselog(). Perform
13993: special processing for specific resource types (problems, exams, quizzes, etc).
13994:
13995: =item *
13996:
13997: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13998: as a PerlChildExitHandler
13999:
14000: =back
14001:
14002: =head2 Other
14003:
14004: =over 4
14005:
14006: =item *
14007:
14008: symblist($mapname,%newhash) : update symbolic storage links
14009:
14010: =back
14011:
14012: =cut
14013:
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