1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1128 2011/08/09 01:06:33 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: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease);
80:
81: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
82: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
83: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
84: %courseownerbuf, %coursetypebuf,$locknum);
85:
86: use IO::Socket;
87: use GDBM_File;
88: use HTML::LCParser;
89: use Fcntl qw(:flock);
90: use Storable qw(thaw nfreeze);
91: use Time::HiRes qw( gettimeofday tv_interval );
92: use Cache::Memcached;
93: use Digest::MD5;
94: use Math::Random;
95: use File::MMagic;
96: use LONCAPA qw(:DEFAULT :match);
97: use LONCAPA::Configuration;
98:
99: use File::Copy;
100:
101: my $readit;
102: my $max_connection_retries = 10; # Or some such value.
103:
104: require Exporter;
105:
106: our @ISA = qw (Exporter);
107: our @EXPORT = qw(%env);
108:
109:
110: # --------------------------------------------------------------------- Logging
111: {
112: my $logid;
113: sub instructor_log {
114: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
115: if (($cnum eq '') || ($cdom eq '')) {
116: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
117: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
118: }
119: $logid++;
120: my $now = time();
121: my $id=$now.'00000'.$$.'00000'.$logid;
122: return &Apache::lonnet::put('nohist_'.$hash_name,
123: { $id => {
124: 'exe_uname' => $env{'user.name'},
125: 'exe_udom' => $env{'user.domain'},
126: 'exe_time' => $now,
127: 'exe_ip' => $ENV{'REMOTE_ADDR'},
128: 'delflag' => $delflag,
129: 'logentry' => $storehash,
130: 'uname' => $uname,
131: 'udom' => $udom,
132: }
133: },$cdom,$cnum);
134: }
135: }
136:
137: sub logtouch {
138: my $execdir=$perlvar{'lonDaemons'};
139: unless (-e "$execdir/logs/lonnet.log") {
140: open(my $fh,">>$execdir/logs/lonnet.log");
141: close $fh;
142: }
143: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
144: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
145: }
146:
147: sub logthis {
148: my $message=shift;
149: my $execdir=$perlvar{'lonDaemons'};
150: my $now=time;
151: my $local=localtime($now);
152: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
153: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
154: print $fh $logstring;
155: close($fh);
156: }
157: return 1;
158: }
159:
160: sub logperm {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
166: print $fh "$now:$message:$local\n";
167: close($fh);
168: }
169: return 1;
170: }
171:
172: sub create_connection {
173: my ($hostname,$lonid) = @_;
174: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
175: Type => SOCK_STREAM,
176: Timeout => 10);
177: return 0 if (!$client);
178: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
179: my $result = <$client>;
180: chomp($result);
181: return 1 if ($result eq 'done');
182: return 0;
183: }
184:
185: sub get_server_timezone {
186: my ($cnum,$cdom) = @_;
187: my $home=&homeserver($cnum,$cdom);
188: if ($home ne 'no_host') {
189: my $cachetime = 24*3600;
190: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
191: if (defined($cached)) {
192: return $timezone;
193: } else {
194: my $timezone = &reply('servertimezone',$home);
195: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
196: }
197: }
198: }
199:
200: sub get_server_distarch {
201: my ($lonhost,$ignore_cache) = @_;
202: if (defined($lonhost)) {
203: if (!defined(&hostname($lonhost))) {
204: return;
205: }
206: my $cachetime = 12*3600;
207: if (!$ignore_cache) {
208: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
209: if (defined($cached)) {
210: return $distarch;
211: }
212: }
213: my $rep = &reply('serverdistarch',$lonhost);
214: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
215: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
216: $rep eq '') {
217: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
218: }
219: }
220: return;
221: }
222:
223: sub get_server_loncaparev {
224: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
225: if (defined($lonhost)) {
226: if (!defined(&hostname($lonhost))) {
227: undef($lonhost);
228: }
229: }
230: if (!defined($lonhost)) {
231: if (defined(&domain($dom,'primary'))) {
232: $lonhost=&domain($dom,'primary');
233: if ($lonhost eq 'no_host') {
234: undef($lonhost);
235: }
236: }
237: }
238: if (defined($lonhost)) {
239: my $cachetime = 12*3600;
240: if (!$ignore_cache) {
241: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
242: if (defined($cached)) {
243: return $loncaparev;
244: }
245: }
246: my ($answer,$loncaparev);
247: my @ids=¤t_machine_ids();
248: if (grep(/^\Q$lonhost\E$/,@ids)) {
249: $answer = $perlvar{'lonVersion'};
250: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
251: $loncaparev = $1;
252: }
253: } else {
254: $answer = &reply('serverloncaparev',$lonhost);
255: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
256: if ($caller eq 'loncron') {
257: my $ua=new LWP::UserAgent;
258: $ua->timeout(4);
259: my $protocol = $protocol{$lonhost};
260: $protocol = 'http' if ($protocol ne 'https');
261: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
262: my $request=new HTTP::Request('GET',$url);
263: my $response=$ua->request($request);
264: unless ($response->is_error()) {
265: my $content = $response->content;
266: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
267: $loncaparev = $1;
268: }
269: }
270: } else {
271: $loncaparev = $loncaparevs{$lonhost};
272: }
273: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
274: $loncaparev = $1;
275: }
276: }
277: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
278: }
279: }
280:
281: sub get_server_homeID {
282: my ($hostname,$ignore_cache,$caller) = @_;
283: unless ($ignore_cache) {
284: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
285: if (defined($cached)) {
286: return $serverhomeID;
287: }
288: }
289: my $cachetime = 12*3600;
290: my $serverhomeID;
291: if ($caller eq 'loncron') {
292: my @machine_ids = &machine_ids($hostname);
293: foreach my $id (@machine_ids) {
294: my $response = &reply('serverhomeID',$id);
295: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
296: $serverhomeID = $response;
297: last;
298: }
299: }
300: if ($serverhomeID eq '') {
301: $serverhomeID = $machine_ids[-1];
302: }
303: } else {
304: $serverhomeID = $serverhomeIDs{$hostname};
305: }
306: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
307: }
308:
309: sub get_remote_globals {
310: my ($lonhost,$whathash,$ignore_cache) = @_;
311: my ($result,%returnhash,%whatneeded);
312: if (ref($whathash) eq 'HASH') {
313: foreach my $what (sort(keys(%{$whathash}))) {
314: my $hashid = $lonhost.'-'.$what;
315: my ($response,$cached);
316: unless ($ignore_cache) {
317: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
318: }
319: if (defined($cached)) {
320: $returnhash{$what} = $response;
321: } else {
322: $whatneeded{$what} = 1;
323: }
324: }
325: if (keys(%whatneeded) == 0) {
326: $result = 'ok';
327: } else {
328: my $requested = &freeze_escape(\%whatneeded);
329: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
330: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
331: ($rep eq 'unknown_cmd')) {
332: $result = $rep;
333: } else {
334: $result = 'ok';
335: my @pairs=split(/\&/,$rep);
336: foreach my $item (@pairs) {
337: my ($key,$value)=split(/=/,$item,2);
338: my $what = &unescape($key);
339: my $hashid = $lonhost.'-'.$what;
340: $returnhash{$what}=&thaw_unescape($value);
341: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
342: }
343: }
344: }
345: }
346: return ($result,\%returnhash);
347: }
348:
349: sub remote_devalidate_cache {
350: my ($lonhost,$name,$id) = @_;
351: my $response = &reply('devalidatecache',&escape($name).':'.&escape($id),$lonhost);
352: return $response;
353: }
354:
355: # -------------------------------------------------- Non-critical communication
356: sub subreply {
357: my ($cmd,$server)=@_;
358: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
359: #
360: # With loncnew process trimming, there's a timing hole between lonc server
361: # process exit and the master server picking up the listen on the AF_UNIX
362: # socket. In that time interval, a lock file will exist:
363:
364: my $lockfile=$peerfile.".lock";
365: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
366: sleep(1);
367: }
368: # At this point, either a loncnew parent is listening or an old lonc
369: # or loncnew child is listening so we can connect or everything's dead.
370: #
371: # We'll give the connection a few tries before abandoning it. If
372: # connection is not possible, we'll con_lost back to the client.
373: #
374: my $client;
375: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
376: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
377: Type => SOCK_STREAM,
378: Timeout => 10);
379: if ($client) {
380: last; # Connected!
381: } else {
382: &create_connection(&hostname($server),$server);
383: }
384: sleep(1); # Try again later if failed connection.
385: }
386: my $answer;
387: if ($client) {
388: print $client "sethost:$server:$cmd\n";
389: $answer=<$client>;
390: if (!$answer) { $answer="con_lost"; }
391: chomp($answer);
392: } else {
393: $answer = 'con_lost'; # Failed connection.
394: }
395: return $answer;
396: }
397:
398: sub reply {
399: my ($cmd,$server)=@_;
400: unless (defined(&hostname($server))) { return 'no_such_host'; }
401: my $answer=subreply($cmd,$server);
402: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
403: &logthis("<font color=\"blue\">WARNING:".
404: " $cmd to $server returned $answer</font>");
405: }
406: return $answer;
407: }
408:
409: # ----------------------------------------------------------- Send USR1 to lonc
410:
411: sub reconlonc {
412: my ($lonid) = @_;
413: my $hostname = &hostname($lonid);
414: if ($lonid) {
415: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
416: if ($hostname && -e $peerfile) {
417: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
418: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
419: Type => SOCK_STREAM,
420: Timeout => 10);
421: if ($client) {
422: print $client ("reset_retries\n");
423: my $answer=<$client>;
424: #reset just this one.
425: }
426: }
427: return;
428: }
429:
430: &logthis("Trying to reconnect lonc");
431: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
432: if (open(my $fh,"<$loncfile")) {
433: my $loncpid=<$fh>;
434: chomp($loncpid);
435: if (kill 0 => $loncpid) {
436: &logthis("lonc at pid $loncpid responding, sending USR1");
437: kill USR1 => $loncpid;
438: sleep 1;
439: } else {
440: &logthis(
441: "<font color=\"blue\">WARNING:".
442: " lonc at pid $loncpid not responding, giving up</font>");
443: }
444: } else {
445: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
446: }
447: }
448:
449: # ------------------------------------------------------ Critical communication
450:
451: sub critical {
452: my ($cmd,$server)=@_;
453: unless (&hostname($server)) {
454: &logthis("<font color=\"blue\">WARNING:".
455: " Critical message to unknown server ($server)</font>");
456: return 'no_such_host';
457: }
458: my $answer=reply($cmd,$server);
459: if ($answer eq 'con_lost') {
460: &reconlonc("$perlvar{'lonSockDir'}/$server");
461: my $answer=reply($cmd,$server);
462: if ($answer eq 'con_lost') {
463: my $now=time;
464: my $middlename=$cmd;
465: $middlename=substr($middlename,0,16);
466: $middlename=~s/\W//g;
467: my $dfilename=
468: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
469: $dumpcount++;
470: {
471: my $dfh;
472: if (open($dfh,">$dfilename")) {
473: print $dfh "$cmd\n";
474: close($dfh);
475: }
476: }
477: sleep 2;
478: my $wcmd='';
479: {
480: my $dfh;
481: if (open($dfh,"<$dfilename")) {
482: $wcmd=<$dfh>;
483: close($dfh);
484: }
485: }
486: chomp($wcmd);
487: if ($wcmd eq $cmd) {
488: &logthis("<font color=\"blue\">WARNING: ".
489: "Connection buffer $dfilename: $cmd</font>");
490: &logperm("D:$server:$cmd");
491: return 'con_delayed';
492: } else {
493: &logthis("<font color=\"red\">CRITICAL:"
494: ." Critical connection failed: $server $cmd</font>");
495: &logperm("F:$server:$cmd");
496: return 'con_failed';
497: }
498: }
499: }
500: return $answer;
501: }
502:
503: # ------------------------------------------- check if return value is an error
504:
505: sub error {
506: my ($result) = @_;
507: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
508: if ($2 == 2) { return undef; }
509: return $1;
510: }
511: return undef;
512: }
513:
514: sub convert_and_load_session_env {
515: my ($lonidsdir,$handle)=@_;
516: my @profile;
517: {
518: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
519: if (!$opened) {
520: return 0;
521: }
522: flock($idf,LOCK_SH);
523: @profile=<$idf>;
524: close($idf);
525: }
526: my %temp_env;
527: foreach my $line (@profile) {
528: if ($line !~ m/=/) {
529: return 0;
530: }
531: chomp($line);
532: my ($envname,$envvalue)=split(/=/,$line,2);
533: $temp_env{&unescape($envname)} = &unescape($envvalue);
534: }
535: unlink("$lonidsdir/$handle.id");
536: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
537: 0640)) {
538: %disk_env = %temp_env;
539: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
540: untie(%disk_env);
541: }
542: return 1;
543: }
544:
545: # ------------------------------------------- Transfer profile into environment
546: my $env_loaded;
547: sub transfer_profile_to_env {
548: my ($lonidsdir,$handle,$force_transfer) = @_;
549: if (!$force_transfer && $env_loaded) { return; }
550:
551: if (!defined($lonidsdir)) {
552: $lonidsdir = $perlvar{'lonIDsDir'};
553: }
554: if (!defined($handle)) {
555: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
556: }
557:
558: my $convert;
559: {
560: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
561: if (!$opened) {
562: return;
563: }
564: flock($idf,LOCK_SH);
565: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
566: &GDBM_READER(),0640)) {
567: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
568: untie(%disk_env);
569: } else {
570: $convert = 1;
571: }
572: }
573: if ($convert) {
574: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
575: &logthis("Failed to load session, or convert session.");
576: }
577: }
578:
579: my %remove;
580: while ( my $envname = each(%env) ) {
581: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
582: if ($time < time-300) {
583: $remove{$key}++;
584: }
585: }
586: }
587:
588: $env{'user.environment'} = "$lonidsdir/$handle.id";
589: $env_loaded=1;
590: foreach my $expired_key (keys(%remove)) {
591: &delenv($expired_key);
592: }
593: }
594:
595: # ---------------------------------------------------- Check for valid session
596: sub check_for_valid_session {
597: my ($r) = @_;
598: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
599: my $lonid=$cookies{'lonID'};
600: return undef if (!$lonid);
601:
602: my $handle=&LONCAPA::clean_handle($lonid->value);
603: my $lonidsdir=$r->dir_config('lonIDsDir');
604: return undef if (!-e "$lonidsdir/$handle.id");
605:
606: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
607: return undef if (!$opened);
608:
609: flock($idf,LOCK_SH);
610: my %disk_env;
611: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
612: &GDBM_READER(),0640)) {
613: return undef;
614: }
615:
616: if (!defined($disk_env{'user.name'})
617: || !defined($disk_env{'user.domain'})) {
618: return undef;
619: }
620: return $handle;
621: }
622:
623: sub timed_flock {
624: my ($file,$lock_type) = @_;
625: my $failed=0;
626: eval {
627: local $SIG{__DIE__}='DEFAULT';
628: local $SIG{ALRM}=sub {
629: $failed=1;
630: die("failed lock");
631: };
632: alarm(13);
633: flock($file,$lock_type);
634: alarm(0);
635: };
636: if ($failed) {
637: return undef;
638: } else {
639: return 1;
640: }
641: }
642:
643: # ---------------------------------------------------------- Append Environment
644:
645: sub appenv {
646: my ($newenv,$roles) = @_;
647: if (ref($newenv) eq 'HASH') {
648: foreach my $key (keys(%{$newenv})) {
649: my $refused = 0;
650: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
651: $refused = 1;
652: if (ref($roles) eq 'ARRAY') {
653: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
654: if (grep(/^\Q$role\E$/,@{$roles})) {
655: $refused = 0;
656: }
657: }
658: }
659: if ($refused) {
660: &logthis("<font color=\"blue\">WARNING: ".
661: "Attempt to modify environment ".$key." to ".$newenv->{$key}
662: .'</font>');
663: delete($newenv->{$key});
664: } else {
665: $env{$key}=$newenv->{$key};
666: }
667: }
668: my $opened = open(my $env_file,'+<',$env{'user.environment'});
669: if ($opened
670: && &timed_flock($env_file,LOCK_EX)
671: &&
672: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
673: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
674: while (my ($key,$value) = each(%{$newenv})) {
675: $disk_env{$key} = $value;
676: }
677: untie(%disk_env);
678: }
679: }
680: return 'ok';
681: }
682: # ----------------------------------------------------- Delete from Environment
683:
684: sub delenv {
685: my ($delthis,$regexp,$roles) = @_;
686: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
687: my $refused = 1;
688: if (ref($roles) eq 'ARRAY') {
689: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
690: if (grep(/^\Q$role\E$/,@{$roles})) {
691: $refused = 0;
692: }
693: }
694: if ($refused) {
695: &logthis("<font color=\"blue\">WARNING: ".
696: "Attempt to delete from environment ".$delthis);
697: return 'error';
698: }
699: }
700: my $opened = open(my $env_file,'+<',$env{'user.environment'});
701: if ($opened
702: && &timed_flock($env_file,LOCK_EX)
703: &&
704: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
705: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
706: foreach my $key (keys(%disk_env)) {
707: if ($regexp) {
708: if ($key=~/^$delthis/) {
709: delete($env{$key});
710: delete($disk_env{$key});
711: }
712: } else {
713: if ($key=~/^\Q$delthis\E/) {
714: delete($env{$key});
715: delete($disk_env{$key});
716: }
717: }
718: }
719: untie(%disk_env);
720: }
721: return 'ok';
722: }
723:
724: sub get_env_multiple {
725: my ($name) = @_;
726: my @values;
727: if (defined($env{$name})) {
728: # exists is it an array
729: if (ref($env{$name})) {
730: @values=@{ $env{$name} };
731: } else {
732: $values[0]=$env{$name};
733: }
734: }
735: return(@values);
736: }
737:
738: # ------------------------------------------------------------------- Locking
739:
740: sub set_lock {
741: my ($text)=@_;
742: $locknum++;
743: my $id=$$.'-'.$locknum;
744: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
745: 'session.lock.'.$id => $text});
746: return $id;
747: }
748:
749: sub get_locks {
750: my $num=0;
751: my %texts=();
752: foreach my $lock (split(/\,/,$env{'session.locks'})) {
753: if ($lock=~/\w/) {
754: $num++;
755: $texts{$lock}=$env{'session.lock.'.$lock};
756: }
757: }
758: return ($num,%texts);
759: }
760:
761: sub remove_lock {
762: my ($id)=@_;
763: my $newlocks='';
764: foreach my $lock (split(/\,/,$env{'session.locks'})) {
765: if (($lock=~/\w/) && ($lock ne $id)) {
766: $newlocks.=','.$lock;
767: }
768: }
769: &appenv({'session.locks' => $newlocks});
770: &delenv('session.lock.'.$id);
771: }
772:
773: sub remove_all_locks {
774: my $activelocks=$env{'session.locks'};
775: foreach my $lock (split(/\,/,$env{'session.locks'})) {
776: if ($lock=~/\w/) {
777: &remove_lock($lock);
778: }
779: }
780: }
781:
782:
783: # ------------------------------------------ Find out current server userload
784: sub userload {
785: my $numusers=0;
786: {
787: opendir(LONIDS,$perlvar{'lonIDsDir'});
788: my $filename;
789: my $curtime=time;
790: while ($filename=readdir(LONIDS)) {
791: next if ($filename eq '.' || $filename eq '..');
792: next if ($filename =~ /publicuser_\d+\.id/);
793: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
794: if ($curtime-$mtime < 1800) { $numusers++; }
795: }
796: closedir(LONIDS);
797: }
798: my $userloadpercent=0;
799: my $maxuserload=$perlvar{'lonUserLoadLim'};
800: if ($maxuserload) {
801: $userloadpercent=100*$numusers/$maxuserload;
802: }
803: $userloadpercent=sprintf("%.2f",$userloadpercent);
804: return $userloadpercent;
805: }
806:
807: # ------------------------------ Find server with least workload from spare.tab
808:
809: sub spareserver {
810: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
811: my $spare_server;
812: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
813: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
814: : $userloadpercent;
815: my ($uint_dom,$remotesessions);
816: if (($udom ne '') && (&domain($udom) ne '')) {
817: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
818: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
819: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
820: $remotesessions = $udomdefaults{'remotesessions'};
821: }
822: my $spareshash = &this_host_spares($udom);
823: if (ref($spareshash) eq 'HASH') {
824: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
825: foreach my $try_server (@{ $spareshash->{'primary'} }) {
826: if ($uint_dom) {
827: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
828: $try_server));
829: }
830: ($spare_server, $lowest_load) =
831: &compare_server_load($try_server, $spare_server, $lowest_load);
832: }
833: }
834:
835: my $found_server = ($spare_server ne '' && $lowest_load < 100);
836:
837: if (!$found_server) {
838: if (ref($spareshash->{'default'}) eq 'ARRAY') {
839: foreach my $try_server (@{ $spareshash->{'default'} }) {
840: if ($uint_dom) {
841: next unless (&spare_can_host($udom,$uint_dom,
842: $remotesessions,$try_server));
843: }
844: ($spare_server, $lowest_load) =
845: &compare_server_load($try_server, $spare_server, $lowest_load);
846: }
847: }
848: }
849: }
850:
851: if (!$want_server_name) {
852: my $protocol = 'http';
853: if ($protocol{$spare_server} eq 'https') {
854: $protocol = $protocol{$spare_server};
855: }
856: if (defined($spare_server)) {
857: my $hostname = &hostname($spare_server);
858: if (defined($hostname)) {
859: $spare_server = $protocol.'://'.$hostname;
860: }
861: }
862: }
863: return $spare_server;
864: }
865:
866: sub compare_server_load {
867: my ($try_server, $spare_server, $lowest_load) = @_;
868:
869: my $loadans = &reply('load', $try_server);
870: my $userloadans = &reply('userload',$try_server);
871:
872: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
873: return ($spare_server, $lowest_load); #didn't get a number from the server
874: }
875:
876: my $load;
877: if ($loadans =~ /\d/) {
878: if ($userloadans =~ /\d/) {
879: #both are numbers, pick the bigger one
880: $load = ($loadans > $userloadans) ? $loadans
881: : $userloadans;
882: } else {
883: $load = $loadans;
884: }
885: } else {
886: $load = $userloadans;
887: }
888:
889: if (($load =~ /\d/) && ($load < $lowest_load)) {
890: $spare_server = $try_server;
891: $lowest_load = $load;
892: }
893: return ($spare_server,$lowest_load);
894: }
895:
896: # --------------------------- ask offload servers if user already has a session
897: sub find_existing_session {
898: my ($udom,$uname) = @_;
899: my $spareshash = &this_host_spares($udom);
900: if (ref($spareshash) eq 'HASH') {
901: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
902: foreach my $try_server (@{ $spareshash->{'primary'} }) {
903: return $try_server if (&has_user_session($try_server, $udom, $uname));
904: }
905: }
906: if (ref($spareshash->{'default'}) eq 'ARRAY') {
907: foreach my $try_server (@{ $spareshash->{'default'} }) {
908: return $try_server if (&has_user_session($try_server, $udom, $uname));
909: }
910: }
911: }
912: return;
913: }
914:
915: # -------------------------------- ask if server already has a session for user
916: sub has_user_session {
917: my ($lonid,$udom,$uname) = @_;
918: my $result = &reply(join(':','userhassession',
919: map {&escape($_)} ($udom,$uname)),$lonid);
920: return 1 if ($result eq 'ok');
921:
922: return 0;
923: }
924:
925: # --------- determine least loaded server in a user's domain which allows login
926:
927: sub choose_server {
928: my ($udom,$checkloginvia) = @_;
929: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
930: my %servers = &get_servers($udom);
931: my $lowest_load = 30000;
932: my ($login_host,$hostname,$portal_path);
933: foreach my $lonhost (keys(%servers)) {
934: my $loginvia;
935: if ($checkloginvia) {
936: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
937: if ($loginvia) {
938: my ($server,$path) = split(/:/,$loginvia);
939: ($login_host, $lowest_load) =
940: &compare_server_load($server, $login_host, $lowest_load);
941: if ($login_host eq $server) {
942: $portal_path = $path;
943: }
944: } else {
945: ($login_host, $lowest_load) =
946: &compare_server_load($lonhost, $login_host, $lowest_load);
947: if ($login_host eq $lonhost) {
948: $portal_path = '';
949: }
950: }
951: } else {
952: ($login_host, $lowest_load) =
953: &compare_server_load($lonhost, $login_host, $lowest_load);
954: }
955: }
956: if ($login_host ne '') {
957: $hostname = &hostname($login_host);
958: }
959: return ($login_host,$hostname,$portal_path);
960: }
961:
962: # --------------------------------------------- Try to change a user's password
963:
964: sub changepass {
965: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
966: $currentpass = &escape($currentpass);
967: $newpass = &escape($newpass);
968: my $lonhost = $perlvar{'lonHostID'};
969: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
970: $server);
971: if (! $answer) {
972: &logthis("No reply on password change request to $server ".
973: "by $uname in domain $udom.");
974: } elsif ($answer =~ "^ok") {
975: &logthis("$uname in $udom successfully changed their password ".
976: "on $server.");
977: } elsif ($answer =~ "^pwchange_failure") {
978: &logthis("$uname in $udom was unable to change their password ".
979: "on $server. The action was blocked by either lcpasswd ".
980: "or pwchange");
981: } elsif ($answer =~ "^non_authorized") {
982: &logthis("$uname in $udom did not get their password correct when ".
983: "attempting to change it on $server.");
984: } elsif ($answer =~ "^auth_mode_error") {
985: &logthis("$uname in $udom attempted to change their password despite ".
986: "not being locally or internally authenticated on $server.");
987: } elsif ($answer =~ "^unknown_user") {
988: &logthis("$uname in $udom attempted to change their password ".
989: "on $server but were unable to because $server is not ".
990: "their home server.");
991: } elsif ($answer =~ "^refused") {
992: &logthis("$server refused to change $uname in $udom password because ".
993: "it was sent an unencrypted request to change the password.");
994: } elsif ($answer =~ "invalid_client") {
995: &logthis("$server refused to change $uname in $udom password because ".
996: "it was a reset by e-mail originating from an invalid server.");
997: }
998: return $answer;
999: }
1000:
1001: # ----------------------- Try to determine user's current authentication scheme
1002:
1003: sub queryauthenticate {
1004: my ($uname,$udom)=@_;
1005: my $uhome=&homeserver($uname,$udom);
1006: if (!$uhome) {
1007: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1008: return 'no_host';
1009: }
1010: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1011: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1012: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1013: }
1014: return $answer;
1015: }
1016:
1017: # --------- Try to authenticate user from domain's lib servers (first this one)
1018:
1019: sub authenticate {
1020: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1021: $upass=&escape($upass);
1022: $uname= &LONCAPA::clean_username($uname);
1023: my $uhome=&homeserver($uname,$udom,1);
1024: my $newhome;
1025: if ((!$uhome) || ($uhome eq 'no_host')) {
1026: # Maybe the machine was offline and only re-appeared again recently?
1027: &reconlonc();
1028: # One more
1029: $uhome=&homeserver($uname,$udom,1);
1030: if (($uhome eq 'no_host') && $checkdefauth) {
1031: if (defined(&domain($udom,'primary'))) {
1032: $newhome=&domain($udom,'primary');
1033: }
1034: if ($newhome ne '') {
1035: $uhome = $newhome;
1036: }
1037: }
1038: if ((!$uhome) || ($uhome eq 'no_host')) {
1039: &logthis("User $uname at $udom is unknown in authenticate");
1040: return 'no_host';
1041: }
1042: }
1043: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1044: if ($answer eq 'authorized') {
1045: if ($newhome) {
1046: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1047: return 'no_account_on_host';
1048: } else {
1049: &logthis("User $uname at $udom authorized by $uhome");
1050: return $uhome;
1051: }
1052: }
1053: if ($answer eq 'non_authorized') {
1054: &logthis("User $uname at $udom rejected by $uhome");
1055: return 'no_host';
1056: }
1057: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1058: return 'no_host';
1059: }
1060:
1061: sub can_host_session {
1062: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1063: my $canhost = 1;
1064: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1065: if (ref($remotesessions) eq 'HASH') {
1066: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1067: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1068: $canhost = 0;
1069: } else {
1070: $canhost = 1;
1071: }
1072: }
1073: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1074: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1075: $canhost = 1;
1076: } else {
1077: $canhost = 0;
1078: }
1079: }
1080: if ($canhost) {
1081: if ($remotesessions->{'version'} ne '') {
1082: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1083: if ($reqmajor ne '' && $reqminor ne '') {
1084: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1085: my $major = $1;
1086: my $minor = $2;
1087: if (($major < $reqmajor ) ||
1088: (($major == $reqmajor) && ($minor < $reqminor))) {
1089: $canhost = 0;
1090: }
1091: } else {
1092: $canhost = 0;
1093: }
1094: }
1095: }
1096: }
1097: }
1098: if ($canhost) {
1099: if (ref($hostedsessions) eq 'HASH') {
1100: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1101: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1102: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1103: if (($uint_dom ne '') &&
1104: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1105: $canhost = 0;
1106: } else {
1107: $canhost = 1;
1108: }
1109: }
1110: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1111: if (($uint_dom ne '') &&
1112: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1113: $canhost = 1;
1114: } else {
1115: $canhost = 0;
1116: }
1117: }
1118: }
1119: }
1120: return $canhost;
1121: }
1122:
1123: sub spare_can_host {
1124: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1125: my $canhost=1;
1126: my @intdoms;
1127: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1128: if (ref($internet_names) eq 'ARRAY') {
1129: @intdoms = @{$internet_names};
1130: }
1131: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1132: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1133: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1134: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1135: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1136: $canhost = &can_host_session($udom,$try_server,$remoterev,
1137: $remotesessions,
1138: $defdomdefaults{'hostedsessions'});
1139: }
1140: return $canhost;
1141: }
1142:
1143: sub this_host_spares {
1144: my ($dom) = @_;
1145: my ($dom_in_use,$lonhost_in_use,$result);
1146: my @hosts = ¤t_machine_ids();
1147: foreach my $lonhost (@hosts) {
1148: if (&host_domain($lonhost) eq $dom) {
1149: $dom_in_use = $dom;
1150: $lonhost_in_use = $lonhost;
1151: last;
1152: }
1153: }
1154: if ($dom_in_use ne '') {
1155: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1156: }
1157: if (ref($result) ne 'HASH') {
1158: $lonhost_in_use = $perlvar{'lonHostID'};
1159: $dom_in_use = &host_domain($lonhost_in_use);
1160: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1161: if (ref($result) ne 'HASH') {
1162: $result = \%spareid;
1163: }
1164: }
1165: return $result;
1166: }
1167:
1168: sub spares_for_offload {
1169: my ($dom_in_use,$lonhost_in_use) = @_;
1170: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1171: if (defined($cached)) {
1172: return $result;
1173: } else {
1174: my $cachetime = 60*60*24;
1175: my %domconfig =
1176: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1177: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1178: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1179: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1180: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1181: }
1182: }
1183: }
1184: }
1185: return;
1186: }
1187:
1188: sub internet_dom_servers {
1189: my ($dom) = @_;
1190: my (%uniqservers,%servers);
1191: my $primaryserver = &hostname(&domain($dom,'primary'));
1192: my @machinedoms = &machine_domains($primaryserver);
1193: foreach my $mdom (@machinedoms) {
1194: my %currservers = %servers;
1195: my %server = &get_servers($mdom);
1196: %servers = (%currservers,%server);
1197: }
1198: my %by_hostname;
1199: foreach my $id (keys(%servers)) {
1200: push(@{$by_hostname{$servers{$id}}},$id);
1201: }
1202: foreach my $hostname (sort(keys(%by_hostname))) {
1203: if (@{$by_hostname{$hostname}} > 1) {
1204: my $match = 0;
1205: foreach my $id (@{$by_hostname{$hostname}}) {
1206: if (&host_domain($id) eq $dom) {
1207: $uniqservers{$id} = $hostname;
1208: $match = 1;
1209: }
1210: }
1211: unless ($match) {
1212: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1213: }
1214: } else {
1215: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1216: }
1217: }
1218: return %uniqservers;
1219: }
1220:
1221: # ---------------------- Find the homebase for a user from domain's lib servers
1222:
1223: my %homecache;
1224: sub homeserver {
1225: my ($uname,$udom,$ignoreBadCache)=@_;
1226: my $index="$uname:$udom";
1227:
1228: if (exists($homecache{$index})) { return $homecache{$index}; }
1229:
1230: my %servers = &get_servers($udom,'library');
1231: foreach my $tryserver (keys(%servers)) {
1232: next if ($ignoreBadCache ne 'true' &&
1233: exists($badServerCache{$tryserver}));
1234:
1235: my $answer=reply("home:$udom:$uname",$tryserver);
1236: if ($answer eq 'found') {
1237: delete($badServerCache{$tryserver});
1238: return $homecache{$index}=$tryserver;
1239: } elsif ($answer eq 'no_host') {
1240: $badServerCache{$tryserver}=1;
1241: }
1242: }
1243: return 'no_host';
1244: }
1245:
1246: # ------------------------------------- Find the usernames behind a list of IDs
1247:
1248: sub idget {
1249: my ($udom,@ids)=@_;
1250: my %returnhash=();
1251:
1252: my %servers = &get_servers($udom,'library');
1253: foreach my $tryserver (keys(%servers)) {
1254: my $idlist=join('&',@ids);
1255: $idlist=~tr/A-Z/a-z/;
1256: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1257: my @answer=();
1258: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1259: @answer=split(/\&/,$reply);
1260: } ;
1261: my $i;
1262: for ($i=0;$i<=$#ids;$i++) {
1263: if ($answer[$i]) {
1264: $returnhash{$ids[$i]}=$answer[$i];
1265: }
1266: }
1267: }
1268: return %returnhash;
1269: }
1270:
1271: # ------------------------------------- Find the IDs behind a list of usernames
1272:
1273: sub idrget {
1274: my ($udom,@unames)=@_;
1275: my %returnhash=();
1276: foreach my $uname (@unames) {
1277: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1278: }
1279: return %returnhash;
1280: }
1281:
1282: # ------------------------------- Store away a list of names and associated IDs
1283:
1284: sub idput {
1285: my ($udom,%ids)=@_;
1286: my %servers=();
1287: foreach my $uname (keys(%ids)) {
1288: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1289: my $uhom=&homeserver($uname,$udom);
1290: if ($uhom ne 'no_host') {
1291: my $id=&escape($ids{$uname});
1292: $id=~tr/A-Z/a-z/;
1293: my $esc_unam=&escape($uname);
1294: if ($servers{$uhom}) {
1295: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1296: } else {
1297: $servers{$uhom}=$id.'='.$esc_unam;
1298: }
1299: }
1300: }
1301: foreach my $server (keys(%servers)) {
1302: &critical('idput:'.$udom.':'.$servers{$server},$server);
1303: }
1304: }
1305:
1306: # ------------------------------dump from db file owned by domainconfig user
1307: sub dump_dom {
1308: my ($namespace,$udom,$regexp,$range)=@_;
1309: if (!$udom) {
1310: $udom=$env{'user.domain'};
1311: }
1312: my %returnhash;
1313: if ($udom) {
1314: my $uname = &get_domainconfiguser($udom);
1315: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1316: }
1317: return %returnhash;
1318: }
1319:
1320: # ------------------------------------------ get items from domain db files
1321:
1322: sub get_dom {
1323: my ($namespace,$storearr,$udom,$uhome)=@_;
1324: my $items='';
1325: foreach my $item (@$storearr) {
1326: $items.=&escape($item).'&';
1327: }
1328: $items=~s/\&$//;
1329: if (!$udom) {
1330: $udom=$env{'user.domain'};
1331: if (defined(&domain($udom,'primary'))) {
1332: $uhome=&domain($udom,'primary');
1333: } else {
1334: undef($uhome);
1335: }
1336: } else {
1337: if (!$uhome) {
1338: if (defined(&domain($udom,'primary'))) {
1339: $uhome=&domain($udom,'primary');
1340: }
1341: }
1342: }
1343: if ($udom && $uhome && ($uhome ne 'no_host')) {
1344: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1345: my %returnhash;
1346: if ($rep eq '' || $rep =~ /^error: 2 /) {
1347: return %returnhash;
1348: }
1349: my @pairs=split(/\&/,$rep);
1350: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1351: return @pairs;
1352: }
1353: my $i=0;
1354: foreach my $item (@$storearr) {
1355: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1356: $i++;
1357: }
1358: return %returnhash;
1359: } else {
1360: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1361: }
1362: }
1363:
1364: # -------------------------------------------- put items in domain db files
1365:
1366: sub put_dom {
1367: my ($namespace,$storehash,$udom,$uhome)=@_;
1368: if (!$udom) {
1369: $udom=$env{'user.domain'};
1370: if (defined(&domain($udom,'primary'))) {
1371: $uhome=&domain($udom,'primary');
1372: } else {
1373: undef($uhome);
1374: }
1375: } else {
1376: if (!$uhome) {
1377: if (defined(&domain($udom,'primary'))) {
1378: $uhome=&domain($udom,'primary');
1379: }
1380: }
1381: }
1382: if ($udom && $uhome && ($uhome ne 'no_host')) {
1383: my $items='';
1384: foreach my $item (keys(%$storehash)) {
1385: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1386: }
1387: $items=~s/\&$//;
1388: return &reply("putdom:$udom:$namespace:$items",$uhome);
1389: } else {
1390: &logthis("put_dom failed - no homeserver and/or domain");
1391: }
1392: }
1393:
1394: # --------------------- newput for items in db file owned by domainconfig user
1395: sub newput_dom {
1396: my ($namespace,$storehash,$udom) = @_;
1397: my $result;
1398: if (!$udom) {
1399: $udom=$env{'user.domain'};
1400: }
1401: if ($udom) {
1402: my $uname = &get_domainconfiguser($udom);
1403: $result = &newput($namespace,$storehash,$udom,$uname);
1404: }
1405: return $result;
1406: }
1407:
1408: # --------------------- delete for items in db file owned by domainconfig user
1409: sub del_dom {
1410: my ($namespace,$storearr,$udom)=@_;
1411: if (ref($storearr) eq 'ARRAY') {
1412: if (!$udom) {
1413: $udom=$env{'user.domain'};
1414: }
1415: if ($udom) {
1416: my $uname = &get_domainconfiguser($udom);
1417: return &del($namespace,$storearr,$udom,$uname);
1418: }
1419: }
1420: }
1421:
1422: # ----------------------------------construct domainconfig user for a domain
1423: sub get_domainconfiguser {
1424: my ($udom) = @_;
1425: return $udom.'-domainconfig';
1426: }
1427:
1428: sub retrieve_inst_usertypes {
1429: my ($udom) = @_;
1430: my (%returnhash,@order);
1431: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1432: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1433: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1434: %returnhash = %{$domdefs{'inststatustypes'}};
1435: @order = @{$domdefs{'inststatusorder'}};
1436: } else {
1437: if (defined(&domain($udom,'primary'))) {
1438: my $uhome=&domain($udom,'primary');
1439: my $rep=&reply("inst_usertypes:$udom",$uhome);
1440: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1441: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1442: return (\%returnhash,\@order);
1443: }
1444: my ($hashitems,$orderitems) = split(/:/,$rep);
1445: my @pairs=split(/\&/,$hashitems);
1446: foreach my $item (@pairs) {
1447: my ($key,$value)=split(/=/,$item,2);
1448: $key = &unescape($key);
1449: next if ($key =~ /^error: 2 /);
1450: $returnhash{$key}=&thaw_unescape($value);
1451: }
1452: my @esc_order = split(/\&/,$orderitems);
1453: foreach my $item (@esc_order) {
1454: push(@order,&unescape($item));
1455: }
1456: } else {
1457: &logthis("get_dom failed - no primary domain server for $udom");
1458: }
1459: }
1460: return (\%returnhash,\@order);
1461: }
1462:
1463: sub is_domainimage {
1464: my ($url) = @_;
1465: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1466: if (&domain($1) ne '') {
1467: return '1';
1468: }
1469: }
1470: return;
1471: }
1472:
1473: sub inst_directory_query {
1474: my ($srch) = @_;
1475: my $udom = $srch->{'srchdomain'};
1476: my %results;
1477: my $homeserver = &domain($udom,'primary');
1478: my $outcome;
1479: if ($homeserver ne '') {
1480: my $queryid=&reply("querysend:instdirsearch:".
1481: &escape($srch->{'srchby'}).':'.
1482: &escape($srch->{'srchterm'}).':'.
1483: &escape($srch->{'srchtype'}),$homeserver);
1484: my $host=&hostname($homeserver);
1485: if ($queryid !~/^\Q$host\E\_/) {
1486: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1487: return;
1488: }
1489: my $response = &get_query_reply($queryid);
1490: my $maxtries = 5;
1491: my $tries = 1;
1492: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1493: $response = &get_query_reply($queryid);
1494: $tries ++;
1495: }
1496:
1497: if (!&error($response) && $response ne 'refused') {
1498: if ($response eq 'unavailable') {
1499: $outcome = $response;
1500: } else {
1501: $outcome = 'ok';
1502: my @matches = split(/\n/,$response);
1503: foreach my $match (@matches) {
1504: my ($key,$value) = split(/=/,$match);
1505: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1506: }
1507: }
1508: }
1509: }
1510: return ($outcome,%results);
1511: }
1512:
1513: sub usersearch {
1514: my ($srch) = @_;
1515: my $dom = $srch->{'srchdomain'};
1516: my %results;
1517: my %libserv = &all_library();
1518: my $query = 'usersearch';
1519: foreach my $tryserver (keys(%libserv)) {
1520: if (&host_domain($tryserver) eq $dom) {
1521: my $host=&hostname($tryserver);
1522: my $queryid=
1523: &reply("querysend:".&escape($query).':'.
1524: &escape($srch->{'srchby'}).':'.
1525: &escape($srch->{'srchtype'}).':'.
1526: &escape($srch->{'srchterm'}),$tryserver);
1527: if ($queryid !~/^\Q$host\E\_/) {
1528: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1529: next;
1530: }
1531: my $reply = &get_query_reply($queryid);
1532: my $maxtries = 1;
1533: my $tries = 1;
1534: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1535: $reply = &get_query_reply($queryid);
1536: $tries ++;
1537: }
1538: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1539: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1540: } else {
1541: my @matches;
1542: if ($reply =~ /\n/) {
1543: @matches = split(/\n/,$reply);
1544: } else {
1545: @matches = split(/\&/,$reply);
1546: }
1547: foreach my $match (@matches) {
1548: my ($uname,$udom,%userhash);
1549: foreach my $entry (split(/:/,$match)) {
1550: my ($key,$value) =
1551: map {&unescape($_);} split(/=/,$entry);
1552: $userhash{$key} = $value;
1553: if ($key eq 'username') {
1554: $uname = $value;
1555: } elsif ($key eq 'domain') {
1556: $udom = $value;
1557: }
1558: }
1559: $results{$uname.':'.$udom} = \%userhash;
1560: }
1561: }
1562: }
1563: }
1564: return %results;
1565: }
1566:
1567: sub get_instuser {
1568: my ($udom,$uname,$id) = @_;
1569: my $homeserver = &domain($udom,'primary');
1570: my ($outcome,%results);
1571: if ($homeserver ne '') {
1572: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1573: &escape($id).':'.&escape($udom),$homeserver);
1574: my $host=&hostname($homeserver);
1575: if ($queryid !~/^\Q$host\E\_/) {
1576: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1577: return;
1578: }
1579: my $response = &get_query_reply($queryid);
1580: my $maxtries = 5;
1581: my $tries = 1;
1582: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1583: $response = &get_query_reply($queryid);
1584: $tries ++;
1585: }
1586: if (!&error($response) && $response ne 'refused') {
1587: if ($response eq 'unavailable') {
1588: $outcome = $response;
1589: } else {
1590: $outcome = 'ok';
1591: my @matches = split(/\n/,$response);
1592: foreach my $match (@matches) {
1593: my ($key,$value) = split(/=/,$match);
1594: $results{&unescape($key)} = &thaw_unescape($value);
1595: }
1596: }
1597: }
1598: }
1599: my %userinfo;
1600: if (ref($results{$uname}) eq 'HASH') {
1601: %userinfo = %{$results{$uname}};
1602: }
1603: return ($outcome,%userinfo);
1604: }
1605:
1606: sub inst_rulecheck {
1607: my ($udom,$uname,$id,$item,$rules) = @_;
1608: my %returnhash;
1609: if ($udom ne '') {
1610: if (ref($rules) eq 'ARRAY') {
1611: @{$rules} = map {&escape($_);} (@{$rules});
1612: my $rulestr = join(':',@{$rules});
1613: my $homeserver=&domain($udom,'primary');
1614: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1615: my $response;
1616: if ($item eq 'username') {
1617: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1618: ':'.&escape($uname).':'.$rulestr,
1619: $homeserver));
1620: } elsif ($item eq 'id') {
1621: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1622: ':'.&escape($id).':'.$rulestr,
1623: $homeserver));
1624: } elsif ($item eq 'selfcreate') {
1625: $response=&unescape(&reply('instselfcreatecheck:'.
1626: &escape($udom).':'.&escape($uname).
1627: ':'.$rulestr,$homeserver));
1628: }
1629: if ($response ne 'refused') {
1630: my @pairs=split(/\&/,$response);
1631: foreach my $item (@pairs) {
1632: my ($key,$value)=split(/=/,$item,2);
1633: $key = &unescape($key);
1634: next if ($key =~ /^error: 2 /);
1635: $returnhash{$key}=&thaw_unescape($value);
1636: }
1637: }
1638: }
1639: }
1640: }
1641: return %returnhash;
1642: }
1643:
1644: sub inst_userrules {
1645: my ($udom,$check) = @_;
1646: my (%ruleshash,@ruleorder);
1647: if ($udom ne '') {
1648: my $homeserver=&domain($udom,'primary');
1649: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1650: my $response;
1651: if ($check eq 'id') {
1652: $response=&reply('instidrules:'.&escape($udom),
1653: $homeserver);
1654: } elsif ($check eq 'email') {
1655: $response=&reply('instemailrules:'.&escape($udom),
1656: $homeserver);
1657: } else {
1658: $response=&reply('instuserrules:'.&escape($udom),
1659: $homeserver);
1660: }
1661: if (($response ne 'refused') && ($response ne 'error') &&
1662: ($response ne 'unknown_cmd') &&
1663: ($response ne 'no_such_host')) {
1664: my ($hashitems,$orderitems) = split(/:/,$response);
1665: my @pairs=split(/\&/,$hashitems);
1666: foreach my $item (@pairs) {
1667: my ($key,$value)=split(/=/,$item,2);
1668: $key = &unescape($key);
1669: next if ($key =~ /^error: 2 /);
1670: $ruleshash{$key}=&thaw_unescape($value);
1671: }
1672: my @esc_order = split(/\&/,$orderitems);
1673: foreach my $item (@esc_order) {
1674: push(@ruleorder,&unescape($item));
1675: }
1676: }
1677: }
1678: }
1679: return (\%ruleshash,\@ruleorder);
1680: }
1681:
1682: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1683:
1684: sub get_domain_defaults {
1685: my ($domain) = @_;
1686: my $cachetime = 60*60*24;
1687: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1688: if (defined($cached)) {
1689: if (ref($result) eq 'HASH') {
1690: return %{$result};
1691: }
1692: }
1693: my %domdefaults;
1694: my %domconfig =
1695: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1696: 'requestcourses','inststatus',
1697: 'coursedefaults','usersessions'],$domain);
1698: if (ref($domconfig{'defaults'}) eq 'HASH') {
1699: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1700: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1701: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1702: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1703: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1704: } else {
1705: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1706: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1707: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1708: }
1709: if (ref($domconfig{'quotas'}) eq 'HASH') {
1710: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1711: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1712: } else {
1713: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1714: }
1715: my @usertools = ('aboutme','blog','portfolio');
1716: foreach my $item (@usertools) {
1717: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1718: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1719: }
1720: }
1721: }
1722: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1723: foreach my $item ('official','unofficial','community') {
1724: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1725: }
1726: }
1727: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1728: foreach my $item ('inststatustypes','inststatusorder') {
1729: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1730: }
1731: }
1732: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1733: foreach my $item ('canuse_pdfforms') {
1734: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1735: }
1736: }
1737: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1738: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1739: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1740: }
1741: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1742: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1743: }
1744: }
1745: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1746: $cachetime);
1747: return %domdefaults;
1748: }
1749:
1750: # --------------------------------------------------- Assign a key to a student
1751:
1752: sub assign_access_key {
1753: #
1754: # a valid key looks like uname:udom#comments
1755: # comments are being appended
1756: #
1757: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1758: $kdom=
1759: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1760: $knum=
1761: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1762: $cdom=
1763: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1764: $cnum=
1765: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1766: $udom=$env{'user.name'} unless (defined($udom));
1767: $uname=$env{'user.domain'} unless (defined($uname));
1768: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1769: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1770: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1771: # assigned to this person
1772: # - this should not happen,
1773: # unless something went wrong
1774: # the first time around
1775: # ready to assign
1776: $logentry=$1.'; '.$logentry;
1777: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1778: $kdom,$knum) eq 'ok') {
1779: # key now belongs to user
1780: my $envkey='key.'.$cdom.'_'.$cnum;
1781: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1782: &appenv({'environment.'.$envkey => $ckey});
1783: return 'ok';
1784: } else {
1785: return
1786: 'error: Count not permanently assign key, will need to be re-entered later.';
1787: }
1788: } else {
1789: return 'error: Could not assign key, try again later.';
1790: }
1791: } elsif (!$existing{$ckey}) {
1792: # the key does not exist
1793: return 'error: The key does not exist';
1794: } else {
1795: # the key is somebody else's
1796: return 'error: The key is already in use';
1797: }
1798: }
1799:
1800: # ------------------------------------------ put an additional comment on a key
1801:
1802: sub comment_access_key {
1803: #
1804: # a valid key looks like uname:udom#comments
1805: # comments are being appended
1806: #
1807: my ($ckey,$cdom,$cnum,$logentry)=@_;
1808: $cdom=
1809: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1810: $cnum=
1811: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1812: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1813: if ($existing{$ckey}) {
1814: $existing{$ckey}.='; '.$logentry;
1815: # ready to assign
1816: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1817: $cdom,$cnum) eq 'ok') {
1818: return 'ok';
1819: } else {
1820: return 'error: Count not store comment.';
1821: }
1822: } else {
1823: # the key does not exist
1824: return 'error: The key does not exist';
1825: }
1826: }
1827:
1828: # ------------------------------------------------------ Generate a set of keys
1829:
1830: sub generate_access_keys {
1831: my ($number,$cdom,$cnum,$logentry)=@_;
1832: $cdom=
1833: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1834: $cnum=
1835: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1836: unless (&allowed('mky',$cdom)) { return 0; }
1837: unless (($cdom) && ($cnum)) { return 0; }
1838: if ($number>10000) { return 0; }
1839: sleep(2); # make sure don't get same seed twice
1840: srand(time()^($$+($$<<15))); # from "Programming Perl"
1841: my $total=0;
1842: for (my $i=1;$i<=$number;$i++) {
1843: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1844: sprintf("%lx",int(100000*rand)).'-'.
1845: sprintf("%lx",int(100000*rand));
1846: $newkey=~s/1/g/g; # folks mix up 1 and l
1847: $newkey=~s/0/h/g; # and also 0 and O
1848: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1849: if ($existing{$newkey}) {
1850: $i--;
1851: } else {
1852: if (&put('accesskeys',
1853: { $newkey => '# generated '.localtime().
1854: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1855: '; '.$logentry },
1856: $cdom,$cnum) eq 'ok') {
1857: $total++;
1858: }
1859: }
1860: }
1861: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1862: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1863: return $total;
1864: }
1865:
1866: # ------------------------------------------------------- Validate an accesskey
1867:
1868: sub validate_access_key {
1869: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1870: $cdom=
1871: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1872: $cnum=
1873: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1874: $udom=$env{'user.domain'} unless (defined($udom));
1875: $uname=$env{'user.name'} unless (defined($uname));
1876: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1877: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1878: }
1879:
1880: # ------------------------------------- Find the section of student in a course
1881: sub devalidate_getsection_cache {
1882: my ($udom,$unam,$courseid)=@_;
1883: my $hashid="$udom:$unam:$courseid";
1884: &devalidate_cache_new('getsection',$hashid);
1885: }
1886:
1887: sub courseid_to_courseurl {
1888: my ($courseid) = @_;
1889: #already url style courseid
1890: return $courseid if ($courseid =~ m{^/});
1891:
1892: if (exists($env{'course.'.$courseid.'.num'})) {
1893: my $cnum = $env{'course.'.$courseid.'.num'};
1894: my $cdom = $env{'course.'.$courseid.'.domain'};
1895: return "/$cdom/$cnum";
1896: }
1897:
1898: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1899: if (exists($courseinfo{'num'})) {
1900: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1901: }
1902:
1903: return undef;
1904: }
1905:
1906: sub getsection {
1907: my ($udom,$unam,$courseid)=@_;
1908: my $cachetime=1800;
1909:
1910: my $hashid="$udom:$unam:$courseid";
1911: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1912: if (defined($cached)) { return $result; }
1913:
1914: my %Pending;
1915: my %Expired;
1916: #
1917: # Each role can either have not started yet (pending), be active,
1918: # or have expired.
1919: #
1920: # If there is an active role, we are done.
1921: #
1922: # If there is more than one role which has not started yet,
1923: # choose the one which will start sooner
1924: # If there is one role which has not started yet, return it.
1925: #
1926: # If there is more than one expired role, choose the one which ended last.
1927: # If there is a role which has expired, return it.
1928: #
1929: $courseid = &courseid_to_courseurl($courseid);
1930: my $extra = &freeze_escape({'skipcheck' => 1});
1931: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1932: foreach my $key (keys(%roleshash)) {
1933: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1934: my $section=$1;
1935: if ($key eq $courseid.'_st') { $section=''; }
1936: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1937: my $now=time;
1938: if (defined($end) && $end && ($now > $end)) {
1939: $Expired{$end}=$section;
1940: next;
1941: }
1942: if (defined($start) && $start && ($now < $start)) {
1943: $Pending{$start}=$section;
1944: next;
1945: }
1946: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1947: }
1948: #
1949: # Presumedly there will be few matching roles from the above
1950: # loop and the sorting time will be negligible.
1951: if (scalar(keys(%Pending))) {
1952: my ($time) = sort {$a <=> $b} keys(%Pending);
1953: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1954: }
1955: if (scalar(keys(%Expired))) {
1956: my @sorted = sort {$a <=> $b} keys(%Expired);
1957: my $time = pop(@sorted);
1958: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1959: }
1960: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1961: }
1962:
1963: sub save_cache {
1964: &purge_remembered();
1965: #&Apache::loncommon::validate_page();
1966: undef(%env);
1967: undef($env_loaded);
1968: }
1969:
1970: my $to_remember=-1;
1971: my %remembered;
1972: my %accessed;
1973: my $kicks=0;
1974: my $hits=0;
1975: sub make_key {
1976: my ($name,$id) = @_;
1977: if (length($id) > 65
1978: && length(&escape($id)) > 200) {
1979: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1980: }
1981: return &escape($name.':'.$id);
1982: }
1983:
1984: sub devalidate_cache_new {
1985: my ($name,$id,$debug) = @_;
1986: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1987: $id=&make_key($name,$id);
1988: $memcache->delete($id);
1989: delete($remembered{$id});
1990: delete($accessed{$id});
1991: }
1992:
1993: sub is_cached_new {
1994: my ($name,$id,$debug) = @_;
1995: $id=&make_key($name,$id);
1996: if (exists($remembered{$id})) {
1997: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1998: $accessed{$id}=[&gettimeofday()];
1999: $hits++;
2000: return ($remembered{$id},1);
2001: }
2002: my $value = $memcache->get($id);
2003: if (!(defined($value))) {
2004: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2005: return (undef,undef);
2006: }
2007: if ($value eq '__undef__') {
2008: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2009: $value=undef;
2010: }
2011: &make_room($id,$value,$debug);
2012: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2013: return ($value,1);
2014: }
2015:
2016: sub do_cache_new {
2017: my ($name,$id,$value,$time,$debug) = @_;
2018: $id=&make_key($name,$id);
2019: my $setvalue=$value;
2020: if (!defined($setvalue)) {
2021: $setvalue='__undef__';
2022: }
2023: if (!defined($time) ) {
2024: $time=600;
2025: }
2026: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2027: my $result = $memcache->set($id,$setvalue,$time);
2028: if (! $result) {
2029: &logthis("caching of id -> $id failed");
2030: $memcache->disconnect_all();
2031: }
2032: # need to make a copy of $value
2033: &make_room($id,$value,$debug);
2034: return $value;
2035: }
2036:
2037: sub make_room {
2038: my ($id,$value,$debug)=@_;
2039:
2040: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2041: : $value;
2042: if ($to_remember<0) { return; }
2043: $accessed{$id}=[&gettimeofday()];
2044: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2045: my $to_kick;
2046: my $max_time=0;
2047: foreach my $other (keys(%accessed)) {
2048: if (&tv_interval($accessed{$other}) > $max_time) {
2049: $to_kick=$other;
2050: $max_time=&tv_interval($accessed{$other});
2051: }
2052: }
2053: delete($remembered{$to_kick});
2054: delete($accessed{$to_kick});
2055: $kicks++;
2056: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2057: return;
2058: }
2059:
2060: sub purge_remembered {
2061: #&logthis("Tossing ".scalar(keys(%remembered)));
2062: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2063: undef(%remembered);
2064: undef(%accessed);
2065: }
2066: # ------------------------------------- Read an entry from a user's environment
2067:
2068: sub userenvironment {
2069: my ($udom,$unam,@what)=@_;
2070: my $items;
2071: foreach my $item (@what) {
2072: $items.=&escape($item).'&';
2073: }
2074: $items=~s/\&$//;
2075: my %returnhash=();
2076: my $uhome = &homeserver($unam,$udom);
2077: unless ($uhome eq 'no_host') {
2078: my @answer=split(/\&/,
2079: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2080: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2081: return %returnhash;
2082: }
2083: my $i;
2084: for ($i=0;$i<=$#what;$i++) {
2085: $returnhash{$what[$i]}=&unescape($answer[$i]);
2086: }
2087: }
2088: return %returnhash;
2089: }
2090:
2091: # ---------------------------------------------------------- Get a studentphoto
2092: sub studentphoto {
2093: my ($udom,$unam,$ext) = @_;
2094: my $home=&Apache::lonnet::homeserver($unam,$udom);
2095: if (defined($env{'request.course.id'})) {
2096: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2097: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2098: return(&retrievestudentphoto($udom,$unam,$ext));
2099: } else {
2100: my ($result,$perm_reqd)=
2101: &Apache::lonnet::auto_photo_permission($unam,$udom);
2102: if ($result eq 'ok') {
2103: if (!($perm_reqd eq 'yes')) {
2104: return(&retrievestudentphoto($udom,$unam,$ext));
2105: }
2106: }
2107: }
2108: }
2109: } else {
2110: my ($result,$perm_reqd) =
2111: &Apache::lonnet::auto_photo_permission($unam,$udom);
2112: if ($result eq 'ok') {
2113: if (!($perm_reqd eq 'yes')) {
2114: return(&retrievestudentphoto($udom,$unam,$ext));
2115: }
2116: }
2117: }
2118: return '/adm/lonKaputt/lonlogo_broken.gif';
2119: }
2120:
2121: sub retrievestudentphoto {
2122: my ($udom,$unam,$ext,$type) = @_;
2123: my $home=&Apache::lonnet::homeserver($unam,$udom);
2124: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2125: if ($ret eq 'ok') {
2126: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2127: if ($type eq 'thumbnail') {
2128: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2129: }
2130: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2131: return $tokenurl;
2132: } else {
2133: if ($type eq 'thumbnail') {
2134: return '/adm/lonKaputt/genericstudent_tn.gif';
2135: } else {
2136: return '/adm/lonKaputt/lonlogo_broken.gif';
2137: }
2138: }
2139: }
2140:
2141: # -------------------------------------------------------------------- New chat
2142:
2143: sub chatsend {
2144: my ($newentry,$anon,$group)=@_;
2145: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2146: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2147: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2148: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2149: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2150: &escape($newentry)).':'.$group,$chome);
2151: }
2152:
2153: # ------------------------------------------ Find current version of a resource
2154:
2155: sub getversion {
2156: my $fname=&clutter(shift);
2157: unless ($fname=~/^\/res\//) { return -1; }
2158: return ¤tversion(&filelocation('',$fname));
2159: }
2160:
2161: sub currentversion {
2162: my $fname=shift;
2163: my $author=$fname;
2164: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2165: my ($udom,$uname)=split(/\//,$author);
2166: my $home=&homeserver($uname,$udom);
2167: if ($home eq 'no_host') {
2168: return -1;
2169: }
2170: my $answer=&reply("currentversion:$fname",$home);
2171: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2172: return -1;
2173: }
2174: return $answer;
2175: }
2176:
2177: #
2178: # Return special version number of resource if set by override, empty otherwise
2179: #
2180: sub usedversion {
2181: my $fname=shift;
2182: unless ($fname) { $fname=$env{'request.uri'}; }
2183: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2184: if ($urlversion) { return $urlversion; }
2185: return '';
2186: }
2187:
2188: # ----------------------------- Subscribe to a resource, return URL if possible
2189:
2190: sub subscribe {
2191: my $fname=shift;
2192: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2193: $fname=~s/[\n\r]//g;
2194: my $author=$fname;
2195: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2196: my ($udom,$uname)=split(/\//,$author);
2197: my $home=homeserver($uname,$udom);
2198: if ($home eq 'no_host') {
2199: return 'not_found';
2200: }
2201: my $answer=reply("sub:$fname",$home);
2202: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2203: $answer.=' by '.$home;
2204: }
2205: return $answer;
2206: }
2207:
2208: # -------------------------------------------------------------- Replicate file
2209:
2210: sub repcopy {
2211: my $filename=shift;
2212: $filename=~s/\/+/\//g;
2213: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2214: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2215: if ($filename=~m|^/home/httpd/html/userfiles/| or
2216: $filename=~m -^/*(uploaded|editupload)/-) {
2217: return &repcopy_userfile($filename);
2218: }
2219: $filename=~s/[\n\r]//g;
2220: my $transname="$filename.in.transfer";
2221: # FIXME: this should flock
2222: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2223: my $remoteurl=subscribe($filename);
2224: if ($remoteurl =~ /^con_lost by/) {
2225: &logthis("Subscribe returned $remoteurl: $filename");
2226: return 'unavailable';
2227: } elsif ($remoteurl eq 'not_found') {
2228: #&logthis("Subscribe returned not_found: $filename");
2229: return 'not_found';
2230: } elsif ($remoteurl =~ /^rejected by/) {
2231: &logthis("Subscribe returned $remoteurl: $filename");
2232: return 'forbidden';
2233: } elsif ($remoteurl eq 'directory') {
2234: return 'ok';
2235: } else {
2236: my $author=$filename;
2237: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2238: my ($udom,$uname)=split(/\//,$author);
2239: my $home=homeserver($uname,$udom);
2240: unless ($home eq $perlvar{'lonHostID'}) {
2241: my @parts=split(/\//,$filename);
2242: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2243: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2244: &logthis("Malconfiguration for replication: $filename");
2245: return 'bad_request';
2246: }
2247: my $count;
2248: for ($count=5;$count<$#parts;$count++) {
2249: $path.="/$parts[$count]";
2250: if ((-e $path)!=1) {
2251: mkdir($path,0777);
2252: }
2253: }
2254: my $ua=new LWP::UserAgent;
2255: my $request=new HTTP::Request('GET',"$remoteurl");
2256: my $response=$ua->request($request,$transname);
2257: if ($response->is_error()) {
2258: unlink($transname);
2259: my $message=$response->status_line;
2260: &logthis("<font color=\"blue\">WARNING:"
2261: ." LWP get: $message: $filename</font>");
2262: return 'unavailable';
2263: } else {
2264: if ($remoteurl!~/\.meta$/) {
2265: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2266: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2267: if ($mresponse->is_error()) {
2268: unlink($filename.'.meta');
2269: &logthis(
2270: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2271: }
2272: }
2273: rename($transname,$filename);
2274: return 'ok';
2275: }
2276: }
2277: }
2278: }
2279:
2280: # ------------------------------------------------ Get server side include body
2281: sub ssi_body {
2282: my ($filelink,%form)=@_;
2283: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2284: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2285: }
2286: my $output='';
2287: my $response;
2288: if ($filelink=~/^https?\:/) {
2289: ($output,$response)=&externalssi($filelink);
2290: } else {
2291: $filelink .= $filelink=~/\?/ ? '&' : '?';
2292: $filelink .= 'inhibitmenu=yes';
2293: ($output,$response)=&ssi($filelink,%form);
2294: }
2295: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2296: $output=~s/^.*?\<body[^\>]*\>//si;
2297: $output=~s/\<\/body\s*\>.*?$//si;
2298: if (wantarray) {
2299: return ($output, $response);
2300: } else {
2301: return $output;
2302: }
2303: }
2304:
2305: # --------------------------------------------------------- Server Side Include
2306:
2307: sub absolute_url {
2308: my ($host_name) = @_;
2309: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2310: if ($host_name eq '') {
2311: $host_name = $ENV{'SERVER_NAME'};
2312: }
2313: return $protocol.$host_name;
2314: }
2315:
2316: #
2317: # Server side include.
2318: # Parameters:
2319: # fn Possibly encrypted resource name/id.
2320: # form Hash that describes how the rendering should be done
2321: # and other things.
2322: # Returns:
2323: # Scalar context: The content of the response.
2324: # Array context: 2 element list of the content and the full response object.
2325: #
2326: sub ssi {
2327:
2328: my ($fn,%form)=@_;
2329: my $ua=new LWP::UserAgent;
2330: my $request;
2331:
2332: $form{'no_update_last_known'}=1;
2333: &Apache::lonenc::check_encrypt(\$fn);
2334: if (%form) {
2335: $request=new HTTP::Request('POST',&absolute_url().$fn);
2336: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2337: } else {
2338: $request=new HTTP::Request('GET',&absolute_url().$fn);
2339: }
2340:
2341: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2342: my $response=$ua->request($request);
2343:
2344: if (wantarray) {
2345: return ($response->content, $response);
2346: } else {
2347: return $response->content;
2348: }
2349: }
2350:
2351: sub externalssi {
2352: my ($url)=@_;
2353: my $ua=new LWP::UserAgent;
2354: my $request=new HTTP::Request('GET',$url);
2355: my $response=$ua->request($request);
2356: if (wantarray) {
2357: return ($response->content, $response);
2358: } else {
2359: return $response->content;
2360: }
2361: }
2362:
2363: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2364:
2365: sub allowuploaded {
2366: my ($srcurl,$url)=@_;
2367: $url=&clutter(&declutter($url));
2368: my $dir=$url;
2369: $dir=~s/\/[^\/]+$//;
2370: my %httpref=();
2371: my $httpurl=&hreflocation('',$url);
2372: $httpref{'httpref.'.$httpurl}=$srcurl;
2373: &Apache::lonnet::appenv(\%httpref);
2374: }
2375:
2376: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2377: # input: action, courseID, current domain, intended
2378: # path to file, source of file, instruction to parse file for objects,
2379: # ref to hash for embedded objects,
2380: # ref to hash for codebase of java objects.
2381: # reference to scalar to accommodate mime type determined
2382: # from File::MMagic if $parser = parse.
2383: #
2384: # output: url to file (if action was uploaddoc),
2385: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2386: #
2387: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2388: # course.
2389: #
2390: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2391: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2392: # course's home server.
2393: #
2394: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2395: # be copied from $source (current location) to
2396: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2397: # and will then be copied to
2398: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2399: # course's home server.
2400: #
2401: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2402: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2403: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2404: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2405: # in course's home server.
2406: #
2407:
2408: sub process_coursefile {
2409: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2410: $mimetype)=@_;
2411: my $fetchresult;
2412: my $home=&homeserver($docuname,$docudom);
2413: if ($action eq 'propagate') {
2414: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2415: $home);
2416: } else {
2417: my $fpath = '';
2418: my $fname = $file;
2419: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2420: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2421: my $filepath = &build_filepath($fpath);
2422: if ($action eq 'copy') {
2423: if ($source eq '') {
2424: $fetchresult = 'no source file';
2425: return $fetchresult;
2426: } else {
2427: my $destination = $filepath.'/'.$fname;
2428: rename($source,$destination);
2429: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2430: $home);
2431: }
2432: } elsif ($action eq 'uploaddoc') {
2433: open(my $fh,'>'.$filepath.'/'.$fname);
2434: print $fh $env{'form.'.$source};
2435: close($fh);
2436: if ($parser eq 'parse') {
2437: my $mm = new File::MMagic;
2438: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2439: if ($type eq 'text/html') {
2440: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2441: unless ($parse_result eq 'ok') {
2442: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2443: }
2444: }
2445: if (ref($mimetype)) {
2446: $$mimetype = $type;
2447: }
2448: }
2449: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2450: $home);
2451: if ($fetchresult eq 'ok') {
2452: return '/uploaded/'.$fpath.'/'.$fname;
2453: } else {
2454: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2455: ' to host '.$home.': '.$fetchresult);
2456: return '/adm/notfound.html';
2457: }
2458: }
2459: }
2460: unless ( $fetchresult eq 'ok') {
2461: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2462: ' to host '.$home.': '.$fetchresult);
2463: }
2464: return $fetchresult;
2465: }
2466:
2467: sub build_filepath {
2468: my ($fpath) = @_;
2469: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2470: unless ($fpath eq '') {
2471: my @parts=split('/',$fpath);
2472: foreach my $part (@parts) {
2473: $filepath.= '/'.$part;
2474: if ((-e $filepath)!=1) {
2475: mkdir($filepath,0777);
2476: }
2477: }
2478: }
2479: return $filepath;
2480: }
2481:
2482: sub store_edited_file {
2483: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2484: my $file = $primary_url;
2485: $file =~ s#^/uploaded/$docudom/$docuname/##;
2486: my $fpath = '';
2487: my $fname = $file;
2488: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2489: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2490: my $filepath = &build_filepath($fpath);
2491: open(my $fh,'>'.$filepath.'/'.$fname);
2492: print $fh $content;
2493: close($fh);
2494: my $home=&homeserver($docuname,$docudom);
2495: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2496: $home);
2497: if ($$fetchresult eq 'ok') {
2498: return '/uploaded/'.$fpath.'/'.$fname;
2499: } else {
2500: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2501: ' to host '.$home.': '.$$fetchresult);
2502: return '/adm/notfound.html';
2503: }
2504: }
2505:
2506: sub clean_filename {
2507: my ($fname,$args)=@_;
2508: # Replace Windows backslashes by forward slashes
2509: $fname=~s/\\/\//g;
2510: if (!$args->{'keep_path'}) {
2511: # Get rid of everything but the actual filename
2512: $fname=~s/^.*\/([^\/]+)$/$1/;
2513: }
2514: # Replace spaces by underscores
2515: $fname=~s/\s+/\_/g;
2516: # Replace all other weird characters by nothing
2517: $fname=~s{[^/\w\.\-]}{}g;
2518: # Replace all .\d. sequences with _\d. so they no longer look like version
2519: # numbers
2520: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2521: return $fname;
2522: }
2523: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2524: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2525: # image with the same aspect ratio as the original, but with dimensions which do
2526: # not exceed $resizewidth and $resizeheight.
2527:
2528: sub resizeImage {
2529: my ($img_path,$resizewidth,$resizeheight) = @_;
2530: my $ima = Image::Magick->new;
2531: my $resized;
2532: if (-e $img_path) {
2533: $ima->Read($img_path);
2534: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2535: my $width = $ima->Get('width');
2536: my $height = $ima->Get('height');
2537: if ($width > $resizewidth) {
2538: my $factor = $width/$resizewidth;
2539: my $newheight = $height/$factor;
2540: $ima->Scale(width=>$resizewidth,height=>$newheight);
2541: $resized = 1;
2542: }
2543: }
2544: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2545: my $width = $ima->Get('width');
2546: my $height = $ima->Get('height');
2547: if ($height > $resizeheight) {
2548: my $factor = $height/$resizeheight;
2549: my $newwidth = $width/$factor;
2550: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2551: $resized = 1;
2552: }
2553: }
2554: if ($resized) {
2555: $ima->Write($img_path);
2556: }
2557: }
2558: return;
2559: }
2560:
2561: # --------------- Take an uploaded file and put it into the userfiles directory
2562: # input: $formname - the contents of the file are in $env{"form.$formname"}
2563: # the desired filename is in $env{"form.$formname.filename"}
2564: # $context - possible values: coursedoc, existingfile, overwrite,
2565: # canceloverwrite, or ''.
2566: # if 'coursedoc': upload to the current course
2567: # if 'existingfile': write file to tmp/overwrites directory
2568: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2569: # $context is passed as argument to &finishuserfileupload
2570: # $subdir - directory in userfile to store the file into
2571: # $parser - instruction to parse file for objects ($parser = parse)
2572: # $allfiles - reference to hash for embedded objects
2573: # $codebase - reference to hash for codebase of java objects
2574: # $desuname - username for permanent storage of uploaded file
2575: # $dsetudom - domain for permanaent storage of uploaded file
2576: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2577: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2578: # $resizewidth - width (pixels) to which to resize uploaded image
2579: # $resizeheight - height (pixels) to which to resize uploaded image
2580: # $mimetype - reference to scalar to accommodate mime type determined
2581: # from File::MMagic if $parser = parse.
2582: #
2583: # output: url of file in userspace, or error: <message>
2584: # or /adm/notfound.html if failure to upload occurse
2585:
2586: sub userfileupload {
2587: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2588: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2589: if (!defined($subdir)) { $subdir='unknown'; }
2590: my $fname=$env{'form.'.$formname.'.filename'};
2591: $fname=&clean_filename($fname);
2592: # See if there is anything left
2593: unless ($fname) { return 'error: no uploaded file'; }
2594: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2595: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2596: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2597: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2598: my $now = time;
2599: my $filepath;
2600: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2601: $filepath = 'tmp/helprequests/'.$now;
2602: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2603: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2604: '_'.$env{'user.domain'}.'/pending';
2605: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2606: my ($docuname,$docudom);
2607: if ($destudom) {
2608: $docudom = $destudom;
2609: } else {
2610: $docudom = $env{'user.domain'};
2611: }
2612: if ($destuname) {
2613: $docuname = $destuname;
2614: } else {
2615: $docuname = $env{'user.name'};
2616: }
2617: if (exists($env{'form.group'})) {
2618: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2619: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2620: }
2621: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2622: if ($context eq 'canceloverwrite') {
2623: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2624: if (-e $tempfile) {
2625: my @info = stat($tempfile);
2626: if ($info[9] eq $env{'form.timestamp'}) {
2627: unlink($tempfile);
2628: }
2629: }
2630: return;
2631: }
2632: }
2633: # Create the directory if not present
2634: my @parts=split(/\//,$filepath);
2635: my $fullpath = $perlvar{'lonDaemons'};
2636: for (my $i=0;$i<@parts;$i++) {
2637: $fullpath .= '/'.$parts[$i];
2638: if ((-e $fullpath)!=1) {
2639: mkdir($fullpath,0777);
2640: }
2641: }
2642: open(my $fh,'>'.$fullpath.'/'.$fname);
2643: print $fh $env{'form.'.$formname};
2644: close($fh);
2645: if ($context eq 'existingfile') {
2646: my @info = stat($fullpath.'/'.$fname);
2647: return ($fullpath.'/'.$fname,$info[9]);
2648: } else {
2649: return $fullpath.'/'.$fname;
2650: }
2651: }
2652: if ($subdir eq 'scantron') {
2653: $fname = 'scantron_orig_'.$fname;
2654: } else {
2655: $fname="$subdir/$fname";
2656: }
2657: if ($context eq 'coursedoc') {
2658: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2659: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2660: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2661: return &finishuserfileupload($docuname,$docudom,
2662: $formname,$fname,$parser,$allfiles,
2663: $codebase,$thumbwidth,$thumbheight,
2664: $resizewidth,$resizeheight,$context,$mimetype);
2665: } else {
2666: $fname=$env{'form.folder'}.'/'.$fname;
2667: return &process_coursefile('uploaddoc',$docuname,$docudom,
2668: $fname,$formname,$parser,
2669: $allfiles,$codebase,$mimetype);
2670: }
2671: } elsif (defined($destuname)) {
2672: my $docuname=$destuname;
2673: my $docudom=$destudom;
2674: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2675: $parser,$allfiles,$codebase,
2676: $thumbwidth,$thumbheight,
2677: $resizewidth,$resizeheight,$context,$mimetype);
2678: } else {
2679: my $docuname=$env{'user.name'};
2680: my $docudom=$env{'user.domain'};
2681: if (exists($env{'form.group'})) {
2682: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2683: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2684: }
2685: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2686: $parser,$allfiles,$codebase,
2687: $thumbwidth,$thumbheight,
2688: $resizewidth,$resizeheight,$context,$mimetype);
2689: }
2690: }
2691:
2692: sub finishuserfileupload {
2693: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2694: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2695: my $path=$docudom.'/'.$docuname.'/';
2696: my $filepath=$perlvar{'lonDocRoot'};
2697:
2698: my ($fnamepath,$file,$fetchthumb);
2699: $file=$fname;
2700: if ($fname=~m|/|) {
2701: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2702: $path.=$fnamepath.'/';
2703: }
2704: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2705: my $count;
2706: for ($count=4;$count<=$#parts;$count++) {
2707: $filepath.="/$parts[$count]";
2708: if ((-e $filepath)!=1) {
2709: mkdir($filepath,0777);
2710: }
2711: }
2712:
2713: # Save the file
2714: {
2715: if (!open(FH,'>'.$filepath.'/'.$file)) {
2716: &logthis('Failed to create '.$filepath.'/'.$file);
2717: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2718: return '/adm/notfound.html';
2719: }
2720: if ($context eq 'overwrite') {
2721: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2722: my $target = $filepath.'/'.$file;
2723: if (-e $source) {
2724: my @info = stat($source);
2725: if ($info[9] eq $env{'form.timestamp'}) {
2726: unless (&File::Copy::move($source,$target)) {
2727: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2728: return "Moving from $source failed";
2729: }
2730: } else {
2731: return "Temporary file: $source had unexpected date/time for last modification";
2732: }
2733: } else {
2734: return "Temporary file: $source missing";
2735: }
2736: } elsif (!print FH ($env{'form.'.$formname})) {
2737: &logthis('Failed to write to '.$filepath.'/'.$file);
2738: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2739: return '/adm/notfound.html';
2740: }
2741: close(FH);
2742: if ($resizewidth && $resizeheight) {
2743: my $mm = new File::MMagic;
2744: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2745: if ($mime_type =~ m{^image/}) {
2746: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2747: }
2748: }
2749: }
2750: if ($parser eq 'parse') {
2751: my $mm = new File::MMagic;
2752: my $type = $mm->checktype_filename($filepath.'/'.$file);
2753: if ($type eq 'text/html') {
2754: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2755: $allfiles,$codebase);
2756: unless ($parse_result eq 'ok') {
2757: &logthis('Failed to parse '.$filepath.$file.
2758: ' for embedded media: '.$parse_result);
2759: }
2760: }
2761: if (ref($mimetype)) {
2762: $$mimetype = $type;
2763: }
2764: }
2765: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2766: my $input = $filepath.'/'.$file;
2767: my $output = $filepath.'/'.'tn-'.$file;
2768: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2769: system("convert -sample $thumbsize $input $output");
2770: if (-e $filepath.'/'.'tn-'.$file) {
2771: $fetchthumb = 1;
2772: }
2773: }
2774:
2775: # Notify homeserver to grep it
2776: #
2777: my $docuhome=&homeserver($docuname,$docudom);
2778: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2779: if ($fetchresult eq 'ok') {
2780: if ($fetchthumb) {
2781: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2782: if ($thumbresult ne 'ok') {
2783: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2784: $docuhome.': '.$thumbresult);
2785: }
2786: }
2787: #
2788: # Return the URL to it
2789: return '/uploaded/'.$path.$file;
2790: } else {
2791: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2792: ': '.$fetchresult);
2793: return '/adm/notfound.html';
2794: }
2795: }
2796:
2797: sub extract_embedded_items {
2798: my ($fullpath,$allfiles,$codebase,$content) = @_;
2799: my @state = ();
2800: my %javafiles = (
2801: codebase => '',
2802: code => '',
2803: archive => ''
2804: );
2805: my %mediafiles = (
2806: src => '',
2807: movie => '',
2808: );
2809: my $p;
2810: if ($content) {
2811: $p = HTML::LCParser->new($content);
2812: } else {
2813: $p = HTML::LCParser->new($fullpath);
2814: }
2815: while (my $t=$p->get_token()) {
2816: if ($t->[0] eq 'S') {
2817: my ($tagname, $attr) = ($t->[1],$t->[2]);
2818: push(@state, $tagname);
2819: if (lc($tagname) eq 'allow') {
2820: &add_filetype($allfiles,$attr->{'src'},'src');
2821: }
2822: if (lc($tagname) eq 'img') {
2823: &add_filetype($allfiles,$attr->{'src'},'src');
2824: }
2825: if (lc($tagname) eq 'a') {
2826: &add_filetype($allfiles,$attr->{'href'},'href');
2827: }
2828: if (lc($tagname) eq 'script') {
2829: if ($attr->{'archive'} =~ /\.jar$/i) {
2830: &add_filetype($allfiles,$attr->{'archive'},'archive');
2831: } else {
2832: &add_filetype($allfiles,$attr->{'src'},'src');
2833: }
2834: }
2835: if (lc($tagname) eq 'link') {
2836: if (lc($attr->{'rel'}) eq 'stylesheet') {
2837: &add_filetype($allfiles,$attr->{'href'},'href');
2838: }
2839: }
2840: if (lc($tagname) eq 'object' ||
2841: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2842: foreach my $item (keys(%javafiles)) {
2843: $javafiles{$item} = '';
2844: }
2845: }
2846: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2847: my $name = lc($attr->{'name'});
2848: foreach my $item (keys(%javafiles)) {
2849: if ($name eq $item) {
2850: $javafiles{$item} = $attr->{'value'};
2851: last;
2852: }
2853: }
2854: foreach my $item (keys(%mediafiles)) {
2855: if ($name eq $item) {
2856: &add_filetype($allfiles, $attr->{'value'}, 'value');
2857: last;
2858: }
2859: }
2860: }
2861: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2862: foreach my $item (keys(%javafiles)) {
2863: if ($attr->{$item}) {
2864: $javafiles{$item} = $attr->{$item};
2865: last;
2866: }
2867: }
2868: foreach my $item (keys(%mediafiles)) {
2869: if ($attr->{$item}) {
2870: &add_filetype($allfiles,$attr->{$item},$item);
2871: last;
2872: }
2873: }
2874: }
2875: } elsif ($t->[0] eq 'E') {
2876: my ($tagname) = ($t->[1]);
2877: if ($javafiles{'codebase'} ne '') {
2878: $javafiles{'codebase'} .= '/';
2879: }
2880: if (lc($tagname) eq 'applet' ||
2881: lc($tagname) eq 'object' ||
2882: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2883: ) {
2884: foreach my $item (keys(%javafiles)) {
2885: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2886: my $file=$javafiles{'codebase'}.$javafiles{$item};
2887: &add_filetype($allfiles,$file,$item);
2888: }
2889: }
2890: }
2891: pop @state;
2892: }
2893: }
2894: return 'ok';
2895: }
2896:
2897: sub add_filetype {
2898: my ($allfiles,$file,$type)=@_;
2899: if (exists($allfiles->{$file})) {
2900: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2901: push(@{$allfiles->{$file}}, &escape($type));
2902: }
2903: } else {
2904: @{$allfiles->{$file}} = (&escape($type));
2905: }
2906: }
2907:
2908: sub removeuploadedurl {
2909: my ($url)=@_;
2910: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2911: return &removeuserfile($uname,$udom,$fname);
2912: }
2913:
2914: sub removeuserfile {
2915: my ($docuname,$docudom,$fname)=@_;
2916: my $home=&homeserver($docuname,$docudom);
2917: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2918: if ($result eq 'ok') {
2919: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2920: my $metafile = $fname.'.meta';
2921: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2922: my $url = "/uploaded/$docudom/$docuname/$fname";
2923: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2924: my $sqlresult =
2925: &update_portfolio_table($docuname,$docudom,$file,
2926: 'portfolio_metadata',$group,
2927: 'delete');
2928: }
2929: }
2930: return $result;
2931: }
2932:
2933: sub mkdiruserfile {
2934: my ($docuname,$docudom,$dir)=@_;
2935: my $home=&homeserver($docuname,$docudom);
2936: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2937: }
2938:
2939: sub renameuserfile {
2940: my ($docuname,$docudom,$old,$new)=@_;
2941: my $home=&homeserver($docuname,$docudom);
2942: my $result = &reply("renameuserfile:$docudom:$docuname:".
2943: &escape("$old").':'.&escape("$new"),$home);
2944: if ($result eq 'ok') {
2945: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2946: my $oldmeta = $old.'.meta';
2947: my $newmeta = $new.'.meta';
2948: my $metaresult =
2949: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2950: my $url = "/uploaded/$docudom/$docuname/$old";
2951: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2952: my $sqlresult =
2953: &update_portfolio_table($docuname,$docudom,$file,
2954: 'portfolio_metadata',$group,
2955: 'delete');
2956: }
2957: }
2958: return $result;
2959: }
2960:
2961: # ------------------------------------------------------------------------- Log
2962:
2963: sub log {
2964: my ($dom,$nam,$hom,$what)=@_;
2965: return critical("log:$dom:$nam:$what",$hom);
2966: }
2967:
2968: # ------------------------------------------------------------------ Course Log
2969: #
2970: # This routine flushes several buffers of non-mission-critical nature
2971: #
2972:
2973: sub flushcourselogs {
2974: &logthis('Flushing log buffers');
2975: #
2976: # course logs
2977: # This is a log of all transactions in a course, which can be used
2978: # for data mining purposes
2979: #
2980: # It also collects the courseid database, which lists last transaction
2981: # times and course titles for all courseids
2982: #
2983: my %courseidbuffer=();
2984: foreach my $crsid (keys(%courselogs)) {
2985: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2986: &escape($courselogs{$crsid}),
2987: $coursehombuf{$crsid}) eq 'ok') {
2988: delete $courselogs{$crsid};
2989: } else {
2990: &logthis('Failed to flush log buffer for '.$crsid);
2991: if (length($courselogs{$crsid})>40000) {
2992: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2993: " exceeded maximum size, deleting.</font>");
2994: delete $courselogs{$crsid};
2995: }
2996: }
2997: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2998: 'description' => $coursedescrbuf{$crsid},
2999: 'inst_code' => $courseinstcodebuf{$crsid},
3000: 'type' => $coursetypebuf{$crsid},
3001: 'owner' => $courseownerbuf{$crsid},
3002: };
3003: }
3004: #
3005: # Write course id database (reverse lookup) to homeserver of courses
3006: # Is used in pickcourse
3007: #
3008: foreach my $crs_home (keys(%courseidbuffer)) {
3009: my $response = &courseidput(&host_domain($crs_home),
3010: $courseidbuffer{$crs_home},
3011: $crs_home,'timeonly');
3012: }
3013: #
3014: # File accesses
3015: # Writes to the dynamic metadata of resources to get hit counts, etc.
3016: #
3017: foreach my $entry (keys(%accesshash)) {
3018: if ($entry =~ /___count$/) {
3019: my ($dom,$name);
3020: ($dom,$name,undef)=
3021: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3022: if (! defined($dom) || $dom eq '' ||
3023: ! defined($name) || $name eq '') {
3024: my $cid = $env{'request.course.id'};
3025: $dom = $env{'request.'.$cid.'.domain'};
3026: $name = $env{'request.'.$cid.'.num'};
3027: }
3028: my $value = $accesshash{$entry};
3029: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3030: my %temphash=($url => $value);
3031: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3032: if ($result eq 'ok') {
3033: delete $accesshash{$entry};
3034: } elsif ($result eq 'unknown_cmd') {
3035: # Target server has old code running on it.
3036: my %temphash=($entry => $value);
3037: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3038: delete $accesshash{$entry};
3039: }
3040: }
3041: } else {
3042: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3043: my %temphash=($entry => $accesshash{$entry});
3044: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3045: delete $accesshash{$entry};
3046: }
3047: }
3048: }
3049: #
3050: # Roles
3051: # Reverse lookup of user roles for course faculty/staff and co-authorship
3052: #
3053: foreach my $entry (keys(%userrolehash)) {
3054: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3055: split(/\:/,$entry);
3056: if (&Apache::lonnet::put('nohist_userroles',
3057: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3058: $rudom,$runame) eq 'ok') {
3059: delete $userrolehash{$entry};
3060: }
3061: }
3062: #
3063: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3064: #
3065: my %domrolebuffer = ();
3066: foreach my $entry (keys(%domainrolehash)) {
3067: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3068: if ($domrolebuffer{$rudom}) {
3069: $domrolebuffer{$rudom}.='&'.&escape($entry).
3070: '='.&escape($domainrolehash{$entry});
3071: } else {
3072: $domrolebuffer{$rudom}.=&escape($entry).
3073: '='.&escape($domainrolehash{$entry});
3074: }
3075: delete $domainrolehash{$entry};
3076: }
3077: foreach my $dom (keys(%domrolebuffer)) {
3078: my %servers = &get_servers($dom,'library');
3079: foreach my $tryserver (keys(%servers)) {
3080: unless (&reply('domroleput:'.$dom.':'.
3081: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3082: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3083: }
3084: }
3085: }
3086: $dumpcount++;
3087: }
3088:
3089: sub courselog {
3090: my $what=shift;
3091: $what=time.':'.$what;
3092: unless ($env{'request.course.id'}) { return ''; }
3093: $coursedombuf{$env{'request.course.id'}}=
3094: $env{'course.'.$env{'request.course.id'}.'.domain'};
3095: $coursenumbuf{$env{'request.course.id'}}=
3096: $env{'course.'.$env{'request.course.id'}.'.num'};
3097: $coursehombuf{$env{'request.course.id'}}=
3098: $env{'course.'.$env{'request.course.id'}.'.home'};
3099: $coursedescrbuf{$env{'request.course.id'}}=
3100: $env{'course.'.$env{'request.course.id'}.'.description'};
3101: $courseinstcodebuf{$env{'request.course.id'}}=
3102: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3103: $courseownerbuf{$env{'request.course.id'}}=
3104: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3105: $coursetypebuf{$env{'request.course.id'}}=
3106: $env{'course.'.$env{'request.course.id'}.'.type'};
3107: if (defined $courselogs{$env{'request.course.id'}}) {
3108: $courselogs{$env{'request.course.id'}}.='&'.$what;
3109: } else {
3110: $courselogs{$env{'request.course.id'}}.=$what;
3111: }
3112: if (length($courselogs{$env{'request.course.id'}})>4048) {
3113: &flushcourselogs();
3114: }
3115: }
3116:
3117: sub courseacclog {
3118: my $fnsymb=shift;
3119: unless ($env{'request.course.id'}) { return ''; }
3120: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3121: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
3122: $what.=':POST';
3123: # FIXME: Probably ought to escape things....
3124: foreach my $key (keys(%env)) {
3125: if ($key=~/^form\.(.*)/) {
3126: my $formitem = $1;
3127: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3128: $what.=':'.$formitem.'='.$env{$key};
3129: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3130: $what.=':'.$formitem.'='.$env{$key};
3131: }
3132: }
3133: }
3134: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3135: # FIXME: We should not be depending on a form parameter that someone
3136: # editing lonsearchcat.pm might change in the future.
3137: if ($env{'form.phase'} eq 'course_search') {
3138: $what.= ':POST';
3139: # FIXME: Probably ought to escape things....
3140: foreach my $element ('courseexp','crsfulltext','crsrelated',
3141: 'crsdiscuss') {
3142: $what.=':'.$element.'='.$env{'form.'.$element};
3143: }
3144: }
3145: }
3146: &courselog($what);
3147: }
3148:
3149: sub countacc {
3150: my $url=&declutter(shift);
3151: return if (! defined($url) || $url eq '');
3152: unless ($env{'request.course.id'}) { return ''; }
3153: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3154: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3155: $accesshash{$key}++;
3156: }
3157:
3158: sub linklog {
3159: my ($from,$to)=@_;
3160: $from=&declutter($from);
3161: $to=&declutter($to);
3162: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3163: $accesshash{$to.'___'.$from.'___goto'}=1;
3164: }
3165:
3166: sub userrolelog {
3167: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3168: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3169: ($trole=~/^in/) || ($trole=~/^cc/) ||
3170: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3171: ($trole=~/^ta/) || ($trole=~/^co/)) {
3172: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3173: $userrolehash
3174: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3175: =$tend.':'.$tstart;
3176: }
3177: if (($env{'request.role'} =~ /dc\./) &&
3178: (($trole=~/^au/) || ($trole=~/^in/) ||
3179: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3180: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3181: ($trole=~/^co/))) {
3182: $userrolehash
3183: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3184: =$tend.':'.$tstart;
3185: }
3186: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3187: ($trole=~/^li/) || ($trole=~/^li/) ||
3188: ($trole=~/^au/) || ($trole=~/^dg/) ||
3189: ($trole=~/^sc/)) {
3190: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3191: $domainrolehash
3192: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3193: = $tend.':'.$tstart;
3194: }
3195: }
3196:
3197: sub courserolelog {
3198: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3199: if (($trole eq 'cc') || ($trole eq 'in') ||
3200: ($trole eq 'ep') || ($trole eq 'ad') ||
3201: ($trole eq 'ta') || ($trole eq 'st') ||
3202: ($trole=~/^cr/) || ($trole eq 'gr') ||
3203: ($trole eq 'co')) {
3204: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3205: my $cdom = $1;
3206: my $cnum = $2;
3207: my $sec = $3;
3208: my $namespace = 'rolelog';
3209: my %storehash = (
3210: role => $trole,
3211: start => $tstart,
3212: end => $tend,
3213: selfenroll => $selfenroll,
3214: context => $context,
3215: );
3216: if ($trole eq 'gr') {
3217: $namespace = 'groupslog';
3218: $storehash{'group'} = $sec;
3219: } else {
3220: $storehash{'section'} = $sec;
3221: }
3222: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3223: if (($trole ne 'st') || ($sec ne '')) {
3224: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3225: }
3226: }
3227: }
3228: return;
3229: }
3230:
3231: sub get_course_adv_roles {
3232: my ($cid,$codes) = @_;
3233: $cid=$env{'request.course.id'} unless (defined($cid));
3234: my %coursehash=&coursedescription($cid);
3235: my $crstype = &Apache::loncommon::course_type($cid);
3236: my %nothide=();
3237: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3238: if ($user !~ /:/) {
3239: $nothide{join(':',split(/[\@]/,$user))}=1;
3240: } else {
3241: $nothide{$user}=1;
3242: }
3243: }
3244: my %returnhash=();
3245: my %dumphash=
3246: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3247: my $now=time;
3248: my %privileged;
3249: foreach my $entry (keys(%dumphash)) {
3250: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3251: if (($tstart) && ($tstart<0)) { next; }
3252: if (($tend) && ($tend<$now)) { next; }
3253: if (($tstart) && ($now<$tstart)) { next; }
3254: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3255: if ($username eq '' || $domain eq '') { next; }
3256: unless (ref($privileged{$domain}) eq 'HASH') {
3257: my %dompersonnel =
3258: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3259: $privileged{$domain} = {};
3260: foreach my $server (keys(%dompersonnel)) {
3261: if (ref($dompersonnel{$server}) eq 'HASH') {
3262: foreach my $user (keys(%{$dompersonnel{$server}})) {
3263: my ($trole,$uname,$udom) = split(/:/,$user);
3264: $privileged{$udom}{$uname} = 1;
3265: }
3266: }
3267: }
3268: }
3269: if ((exists($privileged{$domain}{$username})) &&
3270: (!$nothide{$username.':'.$domain})) { next; }
3271: if ($role eq 'cr') { next; }
3272: if ($codes) {
3273: if ($section) { $role .= ':'.$section; }
3274: if ($returnhash{$role}) {
3275: $returnhash{$role}.=','.$username.':'.$domain;
3276: } else {
3277: $returnhash{$role}=$username.':'.$domain;
3278: }
3279: } else {
3280: my $key=&plaintext($role,$crstype);
3281: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3282: if ($returnhash{$key}) {
3283: $returnhash{$key}.=','.$username.':'.$domain;
3284: } else {
3285: $returnhash{$key}=$username.':'.$domain;
3286: }
3287: }
3288: }
3289: return %returnhash;
3290: }
3291:
3292: sub get_my_roles {
3293: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3294: unless (defined($uname)) { $uname=$env{'user.name'}; }
3295: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3296: my (%dumphash,%nothide);
3297: if ($context eq 'userroles') {
3298: my $extra = &freeze_escape({'skipcheck' => 1});
3299: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3300: } else {
3301: %dumphash=
3302: &dump('nohist_userroles',$udom,$uname);
3303: if ($hidepriv) {
3304: my %coursehash=&coursedescription($udom.'_'.$uname);
3305: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3306: if ($user !~ /:/) {
3307: $nothide{join(':',split(/[\@]/,$user))} = 1;
3308: } else {
3309: $nothide{$user} = 1;
3310: }
3311: }
3312: }
3313: }
3314: my %returnhash=();
3315: my $now=time;
3316: my %privileged;
3317: foreach my $entry (keys(%dumphash)) {
3318: my ($role,$tend,$tstart);
3319: if ($context eq 'userroles') {
3320: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3321: } else {
3322: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3323: }
3324: if (($tstart) && ($tstart<0)) { next; }
3325: my $status = 'active';
3326: if (($tend) && ($tend<=$now)) {
3327: $status = 'previous';
3328: }
3329: if (($tstart) && ($now<$tstart)) {
3330: $status = 'future';
3331: }
3332: if (ref($types) eq 'ARRAY') {
3333: if (!grep(/^\Q$status\E$/,@{$types})) {
3334: next;
3335: }
3336: } else {
3337: if ($status ne 'active') {
3338: next;
3339: }
3340: }
3341: my ($rolecode,$username,$domain,$section,$area);
3342: if ($context eq 'userroles') {
3343: ($area,$rolecode) = split(/_/,$entry);
3344: (undef,$domain,$username,$section) = split(/\//,$area);
3345: } else {
3346: ($role,$username,$domain,$section) = split(/\:/,$entry);
3347: }
3348: if (ref($roledoms) eq 'ARRAY') {
3349: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3350: next;
3351: }
3352: }
3353: if (ref($roles) eq 'ARRAY') {
3354: if (!grep(/^\Q$role\E$/,@{$roles})) {
3355: if ($role =~ /^cr\//) {
3356: if (!grep(/^cr$/,@{$roles})) {
3357: next;
3358: }
3359: } elsif ($role =~ /^gr\//) {
3360: if (!grep(/^gr$/,@{$roles})) {
3361: next;
3362: }
3363: } else {
3364: next;
3365: }
3366: }
3367: }
3368: if ($hidepriv) {
3369: if ($context eq 'userroles') {
3370: if ((&privileged($username,$domain)) &&
3371: (!$nothide{$username.':'.$domain})) {
3372: next;
3373: }
3374: } else {
3375: unless (ref($privileged{$domain}) eq 'HASH') {
3376: my %dompersonnel =
3377: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3378: $privileged{$domain} = {};
3379: if (keys(%dompersonnel)) {
3380: foreach my $server (keys(%dompersonnel)) {
3381: if (ref($dompersonnel{$server}) eq 'HASH') {
3382: foreach my $user (keys(%{$dompersonnel{$server}})) {
3383: my ($trole,$uname,$udom) = split(/:/,$user);
3384: $privileged{$udom}{$uname} = $trole;
3385: }
3386: }
3387: }
3388: }
3389: }
3390: if (exists($privileged{$domain}{$username})) {
3391: if (!$nothide{$username.':'.$domain}) {
3392: next;
3393: }
3394: }
3395: }
3396: }
3397: if ($withsec) {
3398: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3399: $tstart.':'.$tend;
3400: } else {
3401: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3402: }
3403: }
3404: return %returnhash;
3405: }
3406:
3407: # ----------------------------------------------------- Frontpage Announcements
3408: #
3409: #
3410:
3411: sub postannounce {
3412: my ($server,$text)=@_;
3413: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3414: unless ($text=~/\w/) { $text=''; }
3415: return &reply('setannounce:'.&escape($text),$server);
3416: }
3417:
3418: sub getannounce {
3419:
3420: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3421: my $announcement='';
3422: while (my $line = <$fh>) { $announcement .= $line; }
3423: close($fh);
3424: if ($announcement=~/\w/) {
3425: return
3426: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3427: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3428: } else {
3429: return '';
3430: }
3431: } else {
3432: return '';
3433: }
3434: }
3435:
3436: # ---------------------------------------------------------- Course ID routines
3437: # Deal with domain's nohist_courseid.db files
3438: #
3439:
3440: sub courseidput {
3441: my ($domain,$storehash,$coursehome,$caller) = @_;
3442: return unless (ref($storehash) eq 'HASH');
3443: my $outcome;
3444: if ($caller eq 'timeonly') {
3445: my $cids = '';
3446: foreach my $item (keys(%$storehash)) {
3447: $cids.=&escape($item).'&';
3448: }
3449: $cids=~s/\&$//;
3450: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3451: $coursehome);
3452: } else {
3453: my $items = '';
3454: foreach my $item (keys(%$storehash)) {
3455: $items.= &escape($item).'='.
3456: &freeze_escape($$storehash{$item}).'&';
3457: }
3458: $items=~s/\&$//;
3459: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3460: $coursehome);
3461: }
3462: if ($outcome eq 'unknown_cmd') {
3463: my $what;
3464: foreach my $cid (keys(%$storehash)) {
3465: $what .= &escape($cid).'=';
3466: foreach my $item ('description','inst_code','owner','type') {
3467: $what .= &escape($storehash->{$cid}{$item}).':';
3468: }
3469: $what =~ s/\:$/&/;
3470: }
3471: $what =~ s/\&$//;
3472: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3473: } else {
3474: return $outcome;
3475: }
3476: }
3477:
3478: sub courseiddump {
3479: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3480: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3481: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3482: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3483: my $as_hash = 1;
3484: my %returnhash;
3485: if (!$domfilter) { $domfilter=''; }
3486: my %libserv = &all_library();
3487: foreach my $tryserver (keys(%libserv)) {
3488: if ( ( $hostidflag == 1
3489: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3490: || (!defined($hostidflag)) ) {
3491:
3492: if (($domfilter eq '') ||
3493: (&host_domain($tryserver) eq $domfilter)) {
3494: my $rep =
3495: &reply('courseiddump:'.&host_domain($tryserver).':'.
3496: $sincefilter.':'.&escape($descfilter).':'.
3497: &escape($instcodefilter).':'.&escape($ownerfilter).
3498: ':'.&escape($coursefilter).':'.&escape($typefilter).
3499: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3500: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3501: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3502: &escape($cc_clone).':'.$cloneonly.':'.
3503: &escape($createdbefore).':'.&escape($createdafter).':'.
3504: &escape($creationcontext).':'.$domcloner,
3505: $tryserver);
3506: my @pairs=split(/\&/,$rep);
3507: foreach my $item (@pairs) {
3508: my ($key,$value)=split(/\=/,$item,2);
3509: $key = &unescape($key);
3510: next if ($key =~ /^error: 2 /);
3511: my $result = &thaw_unescape($value);
3512: if (ref($result) eq 'HASH') {
3513: $returnhash{$key}=$result;
3514: } else {
3515: my @responses = split(/:/,$value);
3516: my @items = ('description','inst_code','owner','type');
3517: for (my $i=0; $i<@responses; $i++) {
3518: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3519: }
3520: }
3521: }
3522: }
3523: }
3524: }
3525: return %returnhash;
3526: }
3527:
3528: sub courselastaccess {
3529: my ($cdom,$cnum,$hostidref) = @_;
3530: my %returnhash;
3531: if ($cdom && $cnum) {
3532: my $chome = &homeserver($cnum,$cdom);
3533: if ($chome ne 'no_host') {
3534: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3535: &extract_lastaccess(\%returnhash,$rep);
3536: }
3537: } else {
3538: if (!$cdom) { $cdom=''; }
3539: my %libserv = &all_library();
3540: foreach my $tryserver (keys(%libserv)) {
3541: if (ref($hostidref) eq 'ARRAY') {
3542: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3543: }
3544: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3545: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3546: &extract_lastaccess(\%returnhash,$rep);
3547: }
3548: }
3549: }
3550: return %returnhash;
3551: }
3552:
3553: sub extract_lastaccess {
3554: my ($returnhash,$rep) = @_;
3555: if (ref($returnhash) eq 'HASH') {
3556: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3557: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3558: $rep eq '') {
3559: my @pairs=split(/\&/,$rep);
3560: foreach my $item (@pairs) {
3561: my ($key,$value)=split(/\=/,$item,2);
3562: $key = &unescape($key);
3563: next if ($key =~ /^error: 2 /);
3564: $returnhash->{$key} = &thaw_unescape($value);
3565: }
3566: }
3567: }
3568: return;
3569: }
3570:
3571: # ---------------------------------------------------------- DC e-mail
3572:
3573: sub dcmailput {
3574: my ($domain,$msgid,$message,$server)=@_;
3575: my $status = &Apache::lonnet::critical(
3576: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3577: &escape($message),$server);
3578: return $status;
3579: }
3580:
3581: sub dcmaildump {
3582: my ($dom,$startdate,$enddate,$senders) = @_;
3583: my %returnhash=();
3584:
3585: if (defined(&domain($dom,'primary'))) {
3586: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3587: &escape($enddate).':';
3588: my @esc_senders=map { &escape($_)} @$senders;
3589: $cmd.=&escape(join('&',@esc_senders));
3590: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3591: my ($key,$value) = split(/\=/,$line,2);
3592: if (($key) && ($value)) {
3593: $returnhash{&unescape($key)} = &unescape($value);
3594: }
3595: }
3596: }
3597: return %returnhash;
3598: }
3599: # ---------------------------------------------------------- Domain roles
3600:
3601: sub get_domain_roles {
3602: my ($dom,$roles,$startdate,$enddate)=@_;
3603: if ((!defined($startdate)) || ($startdate eq '')) {
3604: $startdate = '.';
3605: }
3606: if ((!defined($enddate)) || ($enddate eq '')) {
3607: $enddate = '.';
3608: }
3609: my $rolelist;
3610: if (ref($roles) eq 'ARRAY') {
3611: $rolelist = join(':',@{$roles});
3612: }
3613: my %personnel = ();
3614:
3615: my %servers = &get_servers($dom,'library');
3616: foreach my $tryserver (keys(%servers)) {
3617: %{$personnel{$tryserver}}=();
3618: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3619: &escape($startdate).':'.
3620: &escape($enddate).':'.
3621: &escape($rolelist), $tryserver))) {
3622: my ($key,$value) = split(/\=/,$line,2);
3623: if (($key) && ($value)) {
3624: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3625: }
3626: }
3627: }
3628: return %personnel;
3629: }
3630:
3631: # ----------------------------------------------------------- Interval timing
3632:
3633: sub get_first_access {
3634: my ($type,$argsymb)=@_;
3635: my ($symb,$courseid,$udom,$uname)=&whichuser();
3636: if ($argsymb) { $symb=$argsymb; }
3637: my ($map,$id,$res)=&decode_symb($symb);
3638: if ($type eq 'course') {
3639: $res='course';
3640: } elsif ($type eq 'map') {
3641: $res=&symbread($map);
3642: } else {
3643: $res=$symb;
3644: }
3645: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3646: return $times{"$courseid\0$res"};
3647: }
3648:
3649: sub set_first_access {
3650: my ($type)=@_;
3651: my ($symb,$courseid,$udom,$uname)=&whichuser();
3652: my ($map,$id,$res)=&decode_symb($symb);
3653: if ($type eq 'course') {
3654: $res='course';
3655: } elsif ($type eq 'map') {
3656: $res=&symbread($map);
3657: } else {
3658: $res=$symb;
3659: }
3660: my $firstaccess=&get_first_access($type,$symb);
3661: if (!$firstaccess) {
3662: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3663: }
3664: return 'already_set';
3665: }
3666:
3667: # --------------------------------------------- Set Expire Date for Spreadsheet
3668:
3669: sub expirespread {
3670: my ($uname,$udom,$stype,$usymb)=@_;
3671: my $cid=$env{'request.course.id'};
3672: if ($cid) {
3673: my $now=time;
3674: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3675: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3676: $env{'course.'.$cid.'.num'}.
3677: ':nohist_expirationdates:'.
3678: &escape($key).'='.$now,
3679: $env{'course.'.$cid.'.home'})
3680: }
3681: return 'ok';
3682: }
3683:
3684: # ----------------------------------------------------- Devalidate Spreadsheets
3685:
3686: sub devalidate {
3687: my ($symb,$uname,$udom)=@_;
3688: my $cid=$env{'request.course.id'};
3689: if ($cid) {
3690: # delete the stored spreadsheets for
3691: # - the student level sheet of this user in course's homespace
3692: # - the assessment level sheet for this resource
3693: # for this user in user's homespace
3694: # - current conditional state info
3695: my $key=$uname.':'.$udom.':';
3696: my $status=
3697: &del('nohist_calculatedsheets',
3698: [$key.'studentcalc:'],
3699: $env{'course.'.$cid.'.domain'},
3700: $env{'course.'.$cid.'.num'})
3701: .' '.
3702: &del('nohist_calculatedsheets_'.$cid,
3703: [$key.'assesscalc:'.$symb],$udom,$uname);
3704: unless ($status eq 'ok ok') {
3705: &logthis('Could not devalidate spreadsheet '.
3706: $uname.' at '.$udom.' for '.
3707: $symb.': '.$status);
3708: }
3709: &delenv('user.state.'.$cid);
3710: }
3711: }
3712:
3713: sub get_scalar {
3714: my ($string,$end) = @_;
3715: my $value;
3716: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3717: $value = $1;
3718: } elsif ($$string =~ s/^([^&]*?)&//) {
3719: $value = $1;
3720: }
3721: return &unescape($value);
3722: }
3723:
3724: sub array2str {
3725: my (@array) = @_;
3726: my $result=&arrayref2str(\@array);
3727: $result=~s/^__ARRAY_REF__//;
3728: $result=~s/__END_ARRAY_REF__$//;
3729: return $result;
3730: }
3731:
3732: sub arrayref2str {
3733: my ($arrayref) = @_;
3734: my $result='__ARRAY_REF__';
3735: foreach my $elem (@$arrayref) {
3736: if(ref($elem) eq 'ARRAY') {
3737: $result.=&arrayref2str($elem).'&';
3738: } elsif(ref($elem) eq 'HASH') {
3739: $result.=&hashref2str($elem).'&';
3740: } elsif(ref($elem)) {
3741: #print("Got a ref of ".(ref($elem))." skipping.");
3742: } else {
3743: $result.=&escape($elem).'&';
3744: }
3745: }
3746: $result=~s/\&$//;
3747: $result .= '__END_ARRAY_REF__';
3748: return $result;
3749: }
3750:
3751: sub hash2str {
3752: my (%hash) = @_;
3753: my $result=&hashref2str(\%hash);
3754: $result=~s/^__HASH_REF__//;
3755: $result=~s/__END_HASH_REF__$//;
3756: return $result;
3757: }
3758:
3759: sub hashref2str {
3760: my ($hashref)=@_;
3761: my $result='__HASH_REF__';
3762: foreach my $key (sort(keys(%$hashref))) {
3763: if (ref($key) eq 'ARRAY') {
3764: $result.=&arrayref2str($key).'=';
3765: } elsif (ref($key) eq 'HASH') {
3766: $result.=&hashref2str($key).'=';
3767: } elsif (ref($key)) {
3768: $result.='=';
3769: #print("Got a ref of ".(ref($key))." skipping.");
3770: } else {
3771: if ($key) {$result.=&escape($key).'=';} else { last; }
3772: }
3773:
3774: if(ref($hashref->{$key}) eq 'ARRAY') {
3775: $result.=&arrayref2str($hashref->{$key}).'&';
3776: } elsif(ref($hashref->{$key}) eq 'HASH') {
3777: $result.=&hashref2str($hashref->{$key}).'&';
3778: } elsif(ref($hashref->{$key})) {
3779: $result.='&';
3780: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3781: } else {
3782: $result.=&escape($hashref->{$key}).'&';
3783: }
3784: }
3785: $result=~s/\&$//;
3786: $result .= '__END_HASH_REF__';
3787: return $result;
3788: }
3789:
3790: sub str2hash {
3791: my ($string)=@_;
3792: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3793: return %$hash;
3794: }
3795:
3796: sub str2hashref {
3797: my ($string) = @_;
3798:
3799: my %hash;
3800:
3801: if($string !~ /^__HASH_REF__/) {
3802: if (! ($string eq '' || !defined($string))) {
3803: $hash{'error'}='Not hash reference';
3804: }
3805: return (\%hash, $string);
3806: }
3807:
3808: $string =~ s/^__HASH_REF__//;
3809:
3810: while($string !~ /^__END_HASH_REF__/) {
3811: #key
3812: my $key='';
3813: if($string =~ /^__HASH_REF__/) {
3814: ($key, $string)=&str2hashref($string);
3815: if(defined($key->{'error'})) {
3816: $hash{'error'}='Bad data';
3817: return (\%hash, $string);
3818: }
3819: } elsif($string =~ /^__ARRAY_REF__/) {
3820: ($key, $string)=&str2arrayref($string);
3821: if($key->[0] eq 'Array reference error') {
3822: $hash{'error'}='Bad data';
3823: return (\%hash, $string);
3824: }
3825: } else {
3826: $string =~ s/^(.*?)=//;
3827: $key=&unescape($1);
3828: }
3829: $string =~ s/^=//;
3830:
3831: #value
3832: my $value='';
3833: if($string =~ /^__HASH_REF__/) {
3834: ($value, $string)=&str2hashref($string);
3835: if(defined($value->{'error'})) {
3836: $hash{'error'}='Bad data';
3837: return (\%hash, $string);
3838: }
3839: } elsif($string =~ /^__ARRAY_REF__/) {
3840: ($value, $string)=&str2arrayref($string);
3841: if($value->[0] eq 'Array reference error') {
3842: $hash{'error'}='Bad data';
3843: return (\%hash, $string);
3844: }
3845: } else {
3846: $value=&get_scalar(\$string,'__END_HASH_REF__');
3847: }
3848: $string =~ s/^&//;
3849:
3850: $hash{$key}=$value;
3851: }
3852:
3853: $string =~ s/^__END_HASH_REF__//;
3854:
3855: return (\%hash, $string);
3856: }
3857:
3858: sub str2array {
3859: my ($string)=@_;
3860: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3861: return @$array;
3862: }
3863:
3864: sub str2arrayref {
3865: my ($string) = @_;
3866: my @array;
3867:
3868: if($string !~ /^__ARRAY_REF__/) {
3869: if (! ($string eq '' || !defined($string))) {
3870: $array[0]='Array reference error';
3871: }
3872: return (\@array, $string);
3873: }
3874:
3875: $string =~ s/^__ARRAY_REF__//;
3876:
3877: while($string !~ /^__END_ARRAY_REF__/) {
3878: my $value='';
3879: if($string =~ /^__HASH_REF__/) {
3880: ($value, $string)=&str2hashref($string);
3881: if(defined($value->{'error'})) {
3882: $array[0] ='Array reference error';
3883: return (\@array, $string);
3884: }
3885: } elsif($string =~ /^__ARRAY_REF__/) {
3886: ($value, $string)=&str2arrayref($string);
3887: if($value->[0] eq 'Array reference error') {
3888: $array[0] ='Array reference error';
3889: return (\@array, $string);
3890: }
3891: } else {
3892: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3893: }
3894: $string =~ s/^&//;
3895:
3896: push(@array, $value);
3897: }
3898:
3899: $string =~ s/^__END_ARRAY_REF__//;
3900:
3901: return (\@array, $string);
3902: }
3903:
3904: # -------------------------------------------------------------------Temp Store
3905:
3906: sub tmpreset {
3907: my ($symb,$namespace,$domain,$stuname) = @_;
3908: if (!$symb) {
3909: $symb=&symbread();
3910: if (!$symb) { $symb= $env{'request.url'}; }
3911: }
3912: $symb=escape($symb);
3913:
3914: if (!$namespace) { $namespace=$env{'request.state'}; }
3915: $namespace=~s/\//\_/g;
3916: $namespace=~s/\W//g;
3917:
3918: if (!$domain) { $domain=$env{'user.domain'}; }
3919: if (!$stuname) { $stuname=$env{'user.name'}; }
3920: if ($domain eq 'public' && $stuname eq 'public') {
3921: $stuname=$ENV{'REMOTE_ADDR'};
3922: }
3923: my $path=LONCAPA::tempdir();
3924: my %hash;
3925: if (tie(%hash,'GDBM_File',
3926: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3927: &GDBM_WRCREAT(),0640)) {
3928: foreach my $key (keys(%hash)) {
3929: if ($key=~ /:$symb/) {
3930: delete($hash{$key});
3931: }
3932: }
3933: }
3934: }
3935:
3936: sub tmpstore {
3937: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3938:
3939: if (!$symb) {
3940: $symb=&symbread();
3941: if (!$symb) { $symb= $env{'request.url'}; }
3942: }
3943: $symb=escape($symb);
3944:
3945: if (!$namespace) {
3946: # I don't think we would ever want to store this for a course.
3947: # it seems this will only be used if we don't have a course.
3948: #$namespace=$env{'request.course.id'};
3949: #if (!$namespace) {
3950: $namespace=$env{'request.state'};
3951: #}
3952: }
3953: $namespace=~s/\//\_/g;
3954: $namespace=~s/\W//g;
3955: if (!$domain) { $domain=$env{'user.domain'}; }
3956: if (!$stuname) { $stuname=$env{'user.name'}; }
3957: if ($domain eq 'public' && $stuname eq 'public') {
3958: $stuname=$ENV{'REMOTE_ADDR'};
3959: }
3960: my $now=time;
3961: my %hash;
3962: my $path=LONCAPA::tempdir();
3963: if (tie(%hash,'GDBM_File',
3964: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3965: &GDBM_WRCREAT(),0640)) {
3966: $hash{"version:$symb"}++;
3967: my $version=$hash{"version:$symb"};
3968: my $allkeys='';
3969: foreach my $key (keys(%$storehash)) {
3970: $allkeys.=$key.':';
3971: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3972: }
3973: $hash{"$version:$symb:timestamp"}=$now;
3974: $allkeys.='timestamp';
3975: $hash{"$version:keys:$symb"}=$allkeys;
3976: if (untie(%hash)) {
3977: return 'ok';
3978: } else {
3979: return "error:$!";
3980: }
3981: } else {
3982: return "error:$!";
3983: }
3984: }
3985:
3986: # -----------------------------------------------------------------Temp Restore
3987:
3988: sub tmprestore {
3989: my ($symb,$namespace,$domain,$stuname) = @_;
3990:
3991: if (!$symb) {
3992: $symb=&symbread();
3993: if (!$symb) { $symb= $env{'request.url'}; }
3994: }
3995: $symb=escape($symb);
3996:
3997: if (!$namespace) { $namespace=$env{'request.state'}; }
3998:
3999: if (!$domain) { $domain=$env{'user.domain'}; }
4000: if (!$stuname) { $stuname=$env{'user.name'}; }
4001: if ($domain eq 'public' && $stuname eq 'public') {
4002: $stuname=$ENV{'REMOTE_ADDR'};
4003: }
4004: my %returnhash;
4005: $namespace=~s/\//\_/g;
4006: $namespace=~s/\W//g;
4007: my %hash;
4008: my $path=LONCAPA::tempdir();
4009: if (tie(%hash,'GDBM_File',
4010: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4011: &GDBM_READER(),0640)) {
4012: my $version=$hash{"version:$symb"};
4013: $returnhash{'version'}=$version;
4014: my $scope;
4015: for ($scope=1;$scope<=$version;$scope++) {
4016: my $vkeys=$hash{"$scope:keys:$symb"};
4017: my @keys=split(/:/,$vkeys);
4018: my $key;
4019: $returnhash{"$scope:keys"}=$vkeys;
4020: foreach $key (@keys) {
4021: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4022: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4023: }
4024: }
4025: if (!(untie(%hash))) {
4026: return "error:$!";
4027: }
4028: } else {
4029: return "error:$!";
4030: }
4031: return %returnhash;
4032: }
4033:
4034: # ----------------------------------------------------------------------- Store
4035:
4036: sub store {
4037: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4038: my $home='';
4039:
4040: if ($stuname) { $home=&homeserver($stuname,$domain); }
4041:
4042: $symb=&symbclean($symb);
4043: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4044:
4045: if (!$domain) { $domain=$env{'user.domain'}; }
4046: if (!$stuname) { $stuname=$env{'user.name'}; }
4047:
4048: &devalidate($symb,$stuname,$domain);
4049:
4050: $symb=escape($symb);
4051: if (!$namespace) {
4052: unless ($namespace=$env{'request.course.id'}) {
4053: return '';
4054: }
4055: }
4056: if (!$home) { $home=$env{'user.home'}; }
4057:
4058: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4059: $$storehash{'host'}=$perlvar{'lonHostID'};
4060:
4061: my $namevalue='';
4062: foreach my $key (keys(%$storehash)) {
4063: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4064: }
4065: $namevalue=~s/\&$//;
4066: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4067: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4068: }
4069:
4070: # -------------------------------------------------------------- Critical Store
4071:
4072: sub cstore {
4073: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4074: my $home='';
4075:
4076: if ($stuname) { $home=&homeserver($stuname,$domain); }
4077:
4078: $symb=&symbclean($symb);
4079: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4080:
4081: if (!$domain) { $domain=$env{'user.domain'}; }
4082: if (!$stuname) { $stuname=$env{'user.name'}; }
4083:
4084: &devalidate($symb,$stuname,$domain);
4085:
4086: $symb=escape($symb);
4087: if (!$namespace) {
4088: unless ($namespace=$env{'request.course.id'}) {
4089: return '';
4090: }
4091: }
4092: if (!$home) { $home=$env{'user.home'}; }
4093:
4094: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4095: $$storehash{'host'}=$perlvar{'lonHostID'};
4096:
4097: my $namevalue='';
4098: foreach my $key (keys(%$storehash)) {
4099: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4100: }
4101: $namevalue=~s/\&$//;
4102: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4103: return critical
4104: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4105: }
4106:
4107: # --------------------------------------------------------------------- Restore
4108:
4109: sub restore {
4110: my ($symb,$namespace,$domain,$stuname) = @_;
4111: my $home='';
4112:
4113: if ($stuname) { $home=&homeserver($stuname,$domain); }
4114:
4115: if (!$symb) {
4116: unless ($symb=escape(&symbread())) { return ''; }
4117: } else {
4118: $symb=&escape(&symbclean($symb));
4119: }
4120: if (!$namespace) {
4121: unless ($namespace=$env{'request.course.id'}) {
4122: return '';
4123: }
4124: }
4125: if (!$domain) { $domain=$env{'user.domain'}; }
4126: if (!$stuname) { $stuname=$env{'user.name'}; }
4127: if (!$home) { $home=$env{'user.home'}; }
4128: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4129:
4130: my %returnhash=();
4131: foreach my $line (split(/\&/,$answer)) {
4132: my ($name,$value)=split(/\=/,$line);
4133: $returnhash{&unescape($name)}=&thaw_unescape($value);
4134: }
4135: my $version;
4136: for ($version=1;$version<=$returnhash{'version'};$version++) {
4137: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4138: $returnhash{$item}=$returnhash{$version.':'.$item};
4139: }
4140: }
4141: return %returnhash;
4142: }
4143:
4144: # ---------------------------------------------------------- Course Description
4145: #
4146: #
4147:
4148: sub coursedescription {
4149: my ($courseid,$args)=@_;
4150: $courseid=~s/^\///;
4151: $courseid=~s/\_/\//g;
4152: my ($cdomain,$cnum)=split(/\//,$courseid);
4153: my $chome=&homeserver($cnum,$cdomain);
4154: my $normalid=$cdomain.'_'.$cnum;
4155: # need to always cache even if we get errors otherwise we keep
4156: # trying and trying and trying to get the course description.
4157: my %envhash=();
4158: my %returnhash=();
4159:
4160: my $expiretime=600;
4161: if ($env{'request.course.id'} eq $normalid) {
4162: $expiretime=120;
4163: }
4164:
4165: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4166: if (!$args->{'freshen_cache'}
4167: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4168: foreach my $key (keys(%env)) {
4169: next if ($key !~ /^\Q$prefix\E(.*)/);
4170: my ($setting) = $1;
4171: $returnhash{$setting} = $env{$key};
4172: }
4173: return %returnhash;
4174: }
4175:
4176: # get the data again
4177:
4178: if (!$args->{'one_time'}) {
4179: $envhash{'course.'.$normalid.'.last_cache'}=time;
4180: }
4181:
4182: if ($chome ne 'no_host') {
4183: %returnhash=&dump('environment',$cdomain,$cnum);
4184: if (!exists($returnhash{'con_lost'})) {
4185: my $username = $env{'user.name'}; # Defult username
4186: if(defined $args->{'user'}) {
4187: $username = $args->{'user'};
4188: }
4189: $returnhash{'home'}= $chome;
4190: $returnhash{'domain'} = $cdomain;
4191: $returnhash{'num'} = $cnum;
4192: if (!defined($returnhash{'type'})) {
4193: $returnhash{'type'} = 'Course';
4194: }
4195: while (my ($name,$value) = each %returnhash) {
4196: $envhash{'course.'.$normalid.'.'.$name}=$value;
4197: }
4198: $returnhash{'url'}=&clutter($returnhash{'url'});
4199: $returnhash{'fn'}=LONCAPA::tempdir() .
4200: $username.'_'.$cdomain.'_'.$cnum;
4201: $envhash{'course.'.$normalid.'.home'}=$chome;
4202: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4203: $envhash{'course.'.$normalid.'.num'}=$cnum;
4204: }
4205: }
4206: if (!$args->{'one_time'}) {
4207: &appenv(\%envhash);
4208: }
4209: return %returnhash;
4210: }
4211:
4212: sub update_released_required {
4213: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4214: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4215: $cid = $env{'request.course.id'};
4216: $cdom = $env{'course.'.$cid.'.domain'};
4217: $cnum = $env{'course.'.$cid.'.num'};
4218: $chome = $env{'course.'.$cid.'.home'};
4219: }
4220: if ($needsrelease) {
4221: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4222: my $needsupdate;
4223: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4224: $needsupdate = 1;
4225: } else {
4226: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4227: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4228: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4229: $needsupdate = 1;
4230: }
4231: }
4232: if ($needsupdate) {
4233: my %needshash = (
4234: 'internal.releaserequired' => $needsrelease,
4235: );
4236: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4237: if ($putresult eq 'ok') {
4238: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4239: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4240: if (ref($crsinfo{$cid}) eq 'HASH') {
4241: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4242: &courseidput($cdom,\%crsinfo,$chome,'notime');
4243: }
4244: }
4245: }
4246: }
4247: return;
4248: }
4249:
4250: # -------------------------------------------------See if a user is privileged
4251:
4252: sub privileged {
4253: my ($username,$domain)=@_;
4254: my $rolesdump=&reply("dump:$domain:$username:roles",
4255: &homeserver($username,$domain));
4256: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4257: ($rolesdump =~ /^error:/)) {
4258: return 0;
4259: }
4260: my $now=time;
4261: if ($rolesdump ne '') {
4262: foreach my $entry (split(/&/,$rolesdump)) {
4263: if ($entry!~/^rolesdef_/) {
4264: my ($area,$role)=split(/=/,$entry);
4265: $area=~s/\_\w\w$//;
4266: my ($trole,$tend,$tstart)=split(/_/,$role);
4267: if (($trole eq 'dc') || ($trole eq 'su')) {
4268: my $active=1;
4269: if ($tend) {
4270: if ($tend<$now) { $active=0; }
4271: }
4272: if ($tstart) {
4273: if ($tstart>$now) { $active=0; }
4274: }
4275: if ($active) { return 1; }
4276: }
4277: }
4278: }
4279: }
4280: return 0;
4281: }
4282:
4283: # -------------------------------------------------------- Get user privileges
4284:
4285: sub rolesinit {
4286: my ($domain,$username,$authhost)=@_;
4287: my $now=time;
4288: my %userroles = ('user.login.time' => $now);
4289: my $extra = &freeze_escape({'skipcheck' => 1});
4290: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4291: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4292: ($rolesdump =~ /^error:/)) {
4293: return \%userroles;
4294: }
4295: my %allroles=();
4296: my %allgroups=();
4297:
4298: if ($rolesdump ne '') {
4299: foreach my $entry (split(/&/,$rolesdump)) {
4300: if ($entry!~/^rolesdef_/) {
4301: my ($area,$role)=split(/=/,$entry);
4302: $area=~s/\_\w\w$//;
4303: my ($trole,$tend,$tstart,$group_privs);
4304: if ($role=~/^cr/) {
4305: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4306: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4307: ($tend,$tstart)=split('_',$trest);
4308: } else {
4309: $trole=$role;
4310: }
4311: } elsif ($role =~ m|^gr/|) {
4312: ($trole,$tend,$tstart) = split(/_/,$role);
4313: next if ($tstart eq '-1');
4314: ($trole,$group_privs) = split(/\//,$trole);
4315: $group_privs = &unescape($group_privs);
4316: } else {
4317: ($trole,$tend,$tstart)=split(/_/,$role);
4318: }
4319: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4320: $username);
4321: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4322: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4323: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4324: if (($area ne '') && ($trole ne '')) {
4325: my $spec=$trole.'.'.$area;
4326: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4327: if ($trole =~ /^cr\//) {
4328: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4329: } elsif ($trole eq 'gr') {
4330: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4331: } else {
4332: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4333: }
4334: }
4335: }
4336: }
4337: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4338: $userroles{'user.adv'} = $adv;
4339: $userroles{'user.author'} = $author;
4340: $env{'user.adv'}=$adv;
4341: }
4342: return \%userroles;
4343: }
4344:
4345: sub set_arearole {
4346: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4347: # log the associated role with the area
4348: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4349: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4350: }
4351:
4352: sub custom_roleprivs {
4353: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4354: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4355: my $homsvr=homeserver($rauthor,$rdomain);
4356: if (&hostname($homsvr) ne '') {
4357: my ($rdummy,$roledef)=
4358: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4359: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4360: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4361: if (defined($syspriv)) {
4362: if ($trest =~ /^$match_community$/) {
4363: $syspriv =~ s/bre\&S//;
4364: }
4365: $$allroles{'cm./'}.=':'.$syspriv;
4366: $$allroles{$spec.'./'}.=':'.$syspriv;
4367: }
4368: if ($tdomain ne '') {
4369: if (defined($dompriv)) {
4370: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4371: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4372: }
4373: if (($trest ne '') && (defined($coursepriv))) {
4374: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4375: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4376: }
4377: }
4378: }
4379: }
4380: }
4381:
4382: sub group_roleprivs {
4383: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4384: my $access = 1;
4385: my $now = time;
4386: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4387: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4388: if ($access) {
4389: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4390: $$allgroups{$course}{$group} .=':'.$group_privs;
4391: }
4392: }
4393:
4394: sub standard_roleprivs {
4395: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4396: if (defined($pr{$trole.':s'})) {
4397: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4398: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4399: }
4400: if ($tdomain ne '') {
4401: if (defined($pr{$trole.':d'})) {
4402: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4403: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4404: }
4405: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4406: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4407: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4408: }
4409: }
4410: }
4411:
4412: sub set_userprivs {
4413: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4414: my $author=0;
4415: my $adv=0;
4416: my %grouproles = ();
4417: if (keys(%{$allgroups}) > 0) {
4418: my @groupkeys;
4419: foreach my $role (keys(%{$allroles})) {
4420: push(@groupkeys,$role);
4421: }
4422: if (ref($groups_roles) eq 'HASH') {
4423: foreach my $key (keys(%{$groups_roles})) {
4424: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4425: push(@groupkeys,$key);
4426: }
4427: }
4428: }
4429: if (@groupkeys > 0) {
4430: foreach my $role (@groupkeys) {
4431: my ($trole,$area,$sec,$extendedarea);
4432: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4433: $trole = $1;
4434: $area = $2;
4435: $sec = $3;
4436: $extendedarea = $area.$sec;
4437: if (exists($$allgroups{$area})) {
4438: foreach my $group (keys(%{$$allgroups{$area}})) {
4439: my $spec = $trole.'.'.$extendedarea;
4440: $grouproles{$spec.'.'.$area.'/'.$group} =
4441: $$allgroups{$area}{$group};
4442: }
4443: }
4444: }
4445: }
4446: }
4447: }
4448: foreach my $group (keys(%grouproles)) {
4449: $$allroles{$group} = $grouproles{$group};
4450: }
4451: foreach my $role (keys(%{$allroles})) {
4452: my %thesepriv;
4453: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4454: foreach my $item (split(/:/,$$allroles{$role})) {
4455: if ($item ne '') {
4456: my ($privilege,$restrictions)=split(/&/,$item);
4457: if ($restrictions eq '') {
4458: $thesepriv{$privilege}='F';
4459: } elsif ($thesepriv{$privilege} ne 'F') {
4460: $thesepriv{$privilege}.=$restrictions;
4461: }
4462: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4463: }
4464: }
4465: my $thesestr='';
4466: foreach my $priv (sort(keys(%thesepriv))) {
4467: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4468: }
4469: $userroles->{'user.priv.'.$role} = $thesestr;
4470: }
4471: return ($author,$adv);
4472: }
4473:
4474: sub role_status {
4475: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4476: my @pwhere = ();
4477: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4478: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4479: unless (!defined($$role) || $$role eq '') {
4480: $$where=join('.',@pwhere);
4481: $$trolecode=$$role.'.'.$$where;
4482: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4483: $$tstatus='is';
4484: if ($$tstart && $$tstart>$update) {
4485: $$tstatus='future';
4486: if ($$tstart<$now) {
4487: if ($$tstart && $$tstart>$refresh) {
4488: if (($$where ne '') && ($$role ne '')) {
4489: my (%allroles,%allgroups,$group_privs,
4490: %groups_roles,@rolecodes);
4491: my %userroles = (
4492: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4493: );
4494: @rolecodes = ('cm');
4495: my $spec=$$role.'.'.$$where;
4496: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4497: if ($$role =~ /^cr\//) {
4498: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4499: push(@rolecodes,'cr');
4500: } elsif ($$role eq 'gr') {
4501: push(@rolecodes,$$role);
4502: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4503: $env{'user.name'});
4504: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4505: (undef,my $group_privs) = split(/\//,$trole);
4506: $group_privs = &unescape($group_privs);
4507: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4508: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4509: &get_groups_roles($tdomain,$trest,
4510: \%course_roles,\@rolecodes,
4511: \%groups_roles);
4512: } else {
4513: push(@rolecodes,$$role);
4514: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4515: }
4516: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4517: &appenv(\%userroles,\@rolecodes);
4518: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4519: }
4520: }
4521: $$tstatus = 'is';
4522: }
4523: }
4524: if ($$tend) {
4525: if ($$tend<$update) {
4526: $$tstatus='expired';
4527: } elsif ($$tend<$now) {
4528: $$tstatus='will_not';
4529: }
4530: }
4531: }
4532: }
4533: }
4534:
4535: sub get_groups_roles {
4536: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4537: return unless((ref($cdom_courseroles) eq 'HASH') &&
4538: (ref($rolecodes) eq 'ARRAY') &&
4539: (ref($groups_roles) eq 'HASH'));
4540: if (keys(%{$cdom_courseroles}) > 0) {
4541: my ($cnum) = ($rest =~ /^($match_courseid)/);
4542: if ($cdom ne '' && $cnum ne '') {
4543: foreach my $key (keys(%{$cdom_courseroles})) {
4544: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4545: my $crsrole = $1;
4546: my $crssec = $2;
4547: if ($crsrole =~ /^cr/) {
4548: unless (grep(/^cr$/,@{$rolecodes})) {
4549: push(@{$rolecodes},'cr');
4550: }
4551: } else {
4552: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4553: push(@{$rolecodes},$crsrole);
4554: }
4555: }
4556: my $rolekey = "$crsrole./$cdom/$cnum";
4557: if ($crssec ne '') {
4558: $rolekey .= "/$crssec";
4559: }
4560: $rolekey .= './';
4561: $groups_roles->{$rolekey} = $rolecodes;
4562: }
4563: }
4564: }
4565: }
4566: return;
4567: }
4568:
4569: sub delete_env_groupprivs {
4570: my ($where,$courseroles,$possroles) = @_;
4571: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4572: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4573: unless (ref($courseroles->{$udom}) eq 'HASH') {
4574: %{$courseroles->{$udom}} =
4575: &get_my_roles('','','userroles',['active'],
4576: $possroles,[$udom],1);
4577: }
4578: if (ref($courseroles->{$udom}) eq 'HASH') {
4579: foreach my $item (keys(%{$courseroles->{$udom}})) {
4580: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4581: my $area = '/'.$cdom.'/'.$cnum;
4582: my $privkey = "user.priv.$crsrole.$area";
4583: if ($crssec ne '') {
4584: $privkey .= '/'.$crssec;
4585: }
4586: $privkey .= ".$area/$group";
4587: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4588: }
4589: }
4590: return;
4591: }
4592:
4593: sub check_adhoc_privs {
4594: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4595: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4596: if ($env{$cckey}) {
4597: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4598: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4599: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4600: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4601: }
4602: } else {
4603: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4604: }
4605: }
4606:
4607: sub set_adhoc_privileges {
4608: # role can be cc or ca
4609: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4610: my $area = '/'.$dcdom.'/'.$pickedcourse;
4611: my $spec = $role.'.'.$area;
4612: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4613: $env{'user.name'});
4614: my %ccrole = ();
4615: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4616: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4617: &appenv(\%userroles,[$role,'cm']);
4618: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4619: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4620: &appenv( {'request.role' => $spec,
4621: 'request.role.domain' => $dcdom,
4622: 'request.course.sec' => ''
4623: }
4624: );
4625: my $tadv=0;
4626: if (&allowed('adv') eq 'F') { $tadv=1; }
4627: &appenv({'request.role.adv' => $tadv});
4628: }
4629: }
4630:
4631: # --------------------------------------------------------------- get interface
4632:
4633: sub get {
4634: my ($namespace,$storearr,$udomain,$uname)=@_;
4635: my $items='';
4636: foreach my $item (@$storearr) {
4637: $items.=&escape($item).'&';
4638: }
4639: $items=~s/\&$//;
4640: if (!$udomain) { $udomain=$env{'user.domain'}; }
4641: if (!$uname) { $uname=$env{'user.name'}; }
4642: my $uhome=&homeserver($uname,$udomain);
4643:
4644: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4645: my @pairs=split(/\&/,$rep);
4646: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4647: return @pairs;
4648: }
4649: my %returnhash=();
4650: my $i=0;
4651: foreach my $item (@$storearr) {
4652: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4653: $i++;
4654: }
4655: return %returnhash;
4656: }
4657:
4658: # --------------------------------------------------------------- del interface
4659:
4660: sub del {
4661: my ($namespace,$storearr,$udomain,$uname)=@_;
4662: my $items='';
4663: foreach my $item (@$storearr) {
4664: $items.=&escape($item).'&';
4665: }
4666:
4667: $items=~s/\&$//;
4668: if (!$udomain) { $udomain=$env{'user.domain'}; }
4669: if (!$uname) { $uname=$env{'user.name'}; }
4670: my $uhome=&homeserver($uname,$udomain);
4671: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4672: }
4673:
4674: # -------------------------------------------------------------- dump interface
4675:
4676: sub dump {
4677: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4678: if (!$udomain) { $udomain=$env{'user.domain'}; }
4679: if (!$uname) { $uname=$env{'user.name'}; }
4680: my $uhome=&homeserver($uname,$udomain);
4681: if ($regexp) {
4682: $regexp=&escape($regexp);
4683: } else {
4684: $regexp='.';
4685: }
4686: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4687: my @pairs=split(/\&/,$rep);
4688: my %returnhash=();
4689: if (!($rep =~ /^error/ )) {
4690: foreach my $item (@pairs) {
4691: my ($key,$value)=split(/=/,$item,2);
4692: $key = &unescape($key);
4693: next if ($key =~ /^error: 2 /);
4694: $returnhash{$key}=&thaw_unescape($value);
4695: }
4696: }
4697: return %returnhash;
4698: }
4699:
4700:
4701: # --------------------------------------------------------- dumpstore interface
4702:
4703: sub dumpstore {
4704: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4705: if (!$udomain) { $udomain=$env{'user.domain'}; }
4706: if (!$uname) { $uname=$env{'user.name'}; }
4707: my $uhome=&homeserver($uname,$udomain);
4708: if ($regexp) {
4709: $regexp=&escape($regexp);
4710: } else {
4711: $regexp='.';
4712: }
4713: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4714: my @pairs=split(/\&/,$rep);
4715: my %returnhash=();
4716: foreach my $item (@pairs) {
4717: my ($key,$value)=split(/=/,$item,2);
4718: next if ($key =~ /^error: 2 /);
4719: $returnhash{$key}=&thaw_unescape($value);
4720: }
4721: return %returnhash;
4722: }
4723:
4724: # -------------------------------------------------------------- keys interface
4725:
4726: sub getkeys {
4727: my ($namespace,$udomain,$uname)=@_;
4728: if (!$udomain) { $udomain=$env{'user.domain'}; }
4729: if (!$uname) { $uname=$env{'user.name'}; }
4730: my $uhome=&homeserver($uname,$udomain);
4731: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4732: my @keyarray=();
4733: foreach my $key (split(/\&/,$rep)) {
4734: next if ($key =~ /^error: 2 /);
4735: push(@keyarray,&unescape($key));
4736: }
4737: return @keyarray;
4738: }
4739:
4740: # --------------------------------------------------------------- currentdump
4741: sub currentdump {
4742: my ($courseid,$sdom,$sname)=@_;
4743: $courseid = $env{'request.course.id'} if (! defined($courseid));
4744: $sdom = $env{'user.domain'} if (! defined($sdom));
4745: $sname = $env{'user.name'} if (! defined($sname));
4746: my $uhome = &homeserver($sname,$sdom);
4747: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4748: return if ($rep =~ /^(error:|no_such_host)/);
4749: #
4750: my %returnhash=();
4751: #
4752: if ($rep eq "unknown_cmd") {
4753: # an old lond will not know currentdump
4754: # Do a dump and make it look like a currentdump
4755: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4756: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4757: my %hash = @tmp;
4758: @tmp=();
4759: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4760: } else {
4761: my @pairs=split(/\&/,$rep);
4762: foreach my $pair (@pairs) {
4763: my ($key,$value)=split(/=/,$pair,2);
4764: my ($symb,$param) = split(/:/,$key);
4765: $returnhash{&unescape($symb)}->{&unescape($param)} =
4766: &thaw_unescape($value);
4767: }
4768: }
4769: return %returnhash;
4770: }
4771:
4772: sub convert_dump_to_currentdump{
4773: my %hash = %{shift()};
4774: my %returnhash;
4775: # Code ripped from lond, essentially. The only difference
4776: # here is the unescaping done by lonnet::dump(). Conceivably
4777: # we might run in to problems with parameter names =~ /^v\./
4778: while (my ($key,$value) = each(%hash)) {
4779: my ($v,$symb,$param) = split(/:/,$key);
4780: $symb = &unescape($symb);
4781: $param = &unescape($param);
4782: next if ($v eq 'version' || $symb eq 'keys');
4783: next if (exists($returnhash{$symb}) &&
4784: exists($returnhash{$symb}->{$param}) &&
4785: $returnhash{$symb}->{'v.'.$param} > $v);
4786: $returnhash{$symb}->{$param}=$value;
4787: $returnhash{$symb}->{'v.'.$param}=$v;
4788: }
4789: #
4790: # Remove all of the keys in the hashes which keep track of
4791: # the version of the parameter.
4792: while (my ($symb,$param_hash) = each(%returnhash)) {
4793: # use a foreach because we are going to delete from the hash.
4794: foreach my $key (keys(%$param_hash)) {
4795: delete($param_hash->{$key}) if ($key =~ /^v\./);
4796: }
4797: }
4798: return \%returnhash;
4799: }
4800:
4801: # ------------------------------------------------------ critical inc interface
4802:
4803: sub cinc {
4804: return &inc(@_,'critical');
4805: }
4806:
4807: # --------------------------------------------------------------- inc interface
4808:
4809: sub inc {
4810: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4811: if (!$udomain) { $udomain=$env{'user.domain'}; }
4812: if (!$uname) { $uname=$env{'user.name'}; }
4813: my $uhome=&homeserver($uname,$udomain);
4814: my $items='';
4815: if (! ref($store)) {
4816: # got a single value, so use that instead
4817: $items = &escape($store).'=&';
4818: } elsif (ref($store) eq 'SCALAR') {
4819: $items = &escape($$store).'=&';
4820: } elsif (ref($store) eq 'ARRAY') {
4821: $items = join('=&',map {&escape($_);} @{$store});
4822: } elsif (ref($store) eq 'HASH') {
4823: while (my($key,$value) = each(%{$store})) {
4824: $items.= &escape($key).'='.&escape($value).'&';
4825: }
4826: }
4827: $items=~s/\&$//;
4828: if ($critical) {
4829: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4830: } else {
4831: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4832: }
4833: }
4834:
4835: # --------------------------------------------------------------- put interface
4836:
4837: sub put {
4838: my ($namespace,$storehash,$udomain,$uname)=@_;
4839: if (!$udomain) { $udomain=$env{'user.domain'}; }
4840: if (!$uname) { $uname=$env{'user.name'}; }
4841: my $uhome=&homeserver($uname,$udomain);
4842: my $items='';
4843: foreach my $item (keys(%$storehash)) {
4844: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4845: }
4846: $items=~s/\&$//;
4847: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4848: }
4849:
4850: # ------------------------------------------------------------ newput interface
4851:
4852: sub newput {
4853: my ($namespace,$storehash,$udomain,$uname)=@_;
4854: if (!$udomain) { $udomain=$env{'user.domain'}; }
4855: if (!$uname) { $uname=$env{'user.name'}; }
4856: my $uhome=&homeserver($uname,$udomain);
4857: my $items='';
4858: foreach my $key (keys(%$storehash)) {
4859: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4860: }
4861: $items=~s/\&$//;
4862: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4863: }
4864:
4865: # --------------------------------------------------------- putstore interface
4866:
4867: sub putstore {
4868: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4869: if (!$udomain) { $udomain=$env{'user.domain'}; }
4870: if (!$uname) { $uname=$env{'user.name'}; }
4871: my $uhome=&homeserver($uname,$udomain);
4872: my $items='';
4873: foreach my $key (keys(%$storehash)) {
4874: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4875: }
4876: $items=~s/\&$//;
4877: my $esc_symb=&escape($symb);
4878: my $esc_v=&escape($version);
4879: my $reply =
4880: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4881: $uhome);
4882: if ($reply eq 'unknown_cmd') {
4883: # gfall back to way things use to be done
4884: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4885: $uname);
4886: }
4887: return $reply;
4888: }
4889:
4890: sub old_putstore {
4891: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4892: if (!$udomain) { $udomain=$env{'user.domain'}; }
4893: if (!$uname) { $uname=$env{'user.name'}; }
4894: my $uhome=&homeserver($uname,$udomain);
4895: my %newstorehash;
4896: foreach my $item (keys(%$storehash)) {
4897: my $key = $version.':'.&escape($symb).':'.$item;
4898: $newstorehash{$key} = $storehash->{$item};
4899: }
4900: my $items='';
4901: my %allitems = ();
4902: foreach my $item (keys(%newstorehash)) {
4903: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4904: my $key = $1.':keys:'.$2;
4905: $allitems{$key} .= $3.':';
4906: }
4907: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4908: }
4909: foreach my $item (keys(%allitems)) {
4910: $allitems{$item} =~ s/\:$//;
4911: $items.= $item.'='.$allitems{$item}.'&';
4912: }
4913: $items=~s/\&$//;
4914: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4915: }
4916:
4917: # ------------------------------------------------------ critical put interface
4918:
4919: sub cput {
4920: my ($namespace,$storehash,$udomain,$uname)=@_;
4921: if (!$udomain) { $udomain=$env{'user.domain'}; }
4922: if (!$uname) { $uname=$env{'user.name'}; }
4923: my $uhome=&homeserver($uname,$udomain);
4924: my $items='';
4925: foreach my $item (keys(%$storehash)) {
4926: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4927: }
4928: $items=~s/\&$//;
4929: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4930: }
4931:
4932: # -------------------------------------------------------------- eget interface
4933:
4934: sub eget {
4935: my ($namespace,$storearr,$udomain,$uname)=@_;
4936: my $items='';
4937: foreach my $item (@$storearr) {
4938: $items.=&escape($item).'&';
4939: }
4940: $items=~s/\&$//;
4941: if (!$udomain) { $udomain=$env{'user.domain'}; }
4942: if (!$uname) { $uname=$env{'user.name'}; }
4943: my $uhome=&homeserver($uname,$udomain);
4944: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4945: my @pairs=split(/\&/,$rep);
4946: my %returnhash=();
4947: my $i=0;
4948: foreach my $item (@$storearr) {
4949: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4950: $i++;
4951: }
4952: return %returnhash;
4953: }
4954:
4955: # ------------------------------------------------------------ tmpput interface
4956: sub tmpput {
4957: my ($storehash,$server,$context)=@_;
4958: my $items='';
4959: foreach my $item (keys(%$storehash)) {
4960: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4961: }
4962: $items=~s/\&$//;
4963: if (defined($context)) {
4964: $items .= ':'.&escape($context);
4965: }
4966: return &reply("tmpput:$items",$server);
4967: }
4968:
4969: # ------------------------------------------------------------ tmpget interface
4970: sub tmpget {
4971: my ($token,$server)=@_;
4972: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4973: my $rep=&reply("tmpget:$token",$server);
4974: my %returnhash;
4975: foreach my $item (split(/\&/,$rep)) {
4976: my ($key,$value)=split(/=/,$item);
4977: next if ($key =~ /^error: 2 /);
4978: $returnhash{&unescape($key)}=&thaw_unescape($value);
4979: }
4980: return %returnhash;
4981: }
4982:
4983: # ------------------------------------------------------------ tmpdel interface
4984: sub tmpdel {
4985: my ($token,$server)=@_;
4986: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4987: return &reply("tmpdel:$token",$server);
4988: }
4989:
4990: # -------------------------------------------------- portfolio access checking
4991:
4992: sub portfolio_access {
4993: my ($requrl) = @_;
4994: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4995: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4996: if ($result) {
4997: my %setters;
4998: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4999: my ($startblock,$endblock) =
5000: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5001: if ($startblock && $endblock) {
5002: return 'B';
5003: }
5004: } else {
5005: my ($startblock,$endblock) =
5006: &Apache::loncommon::blockcheck(\%setters,'port');
5007: if ($startblock && $endblock) {
5008: return 'B';
5009: }
5010: }
5011: }
5012: if ($result eq 'ok') {
5013: return 'F';
5014: } elsif ($result =~ /^[^:]+:guest_/) {
5015: return 'A';
5016: }
5017: return '';
5018: }
5019:
5020: sub get_portfolio_access {
5021: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5022:
5023: if (!ref($access_hash)) {
5024: my $current_perms = &get_portfile_permissions($udom,$unum);
5025: my %access_controls = &get_access_controls($current_perms,$group,
5026: $file_name);
5027: $access_hash = $access_controls{$file_name};
5028: }
5029:
5030: my ($public,$guest,@domains,@users,@courses,@groups);
5031: my $now = time;
5032: if (ref($access_hash) eq 'HASH') {
5033: foreach my $key (keys(%{$access_hash})) {
5034: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5035: if ($start > $now) {
5036: next;
5037: }
5038: if ($end && $end<$now) {
5039: next;
5040: }
5041: if ($scope eq 'public') {
5042: $public = $key;
5043: last;
5044: } elsif ($scope eq 'guest') {
5045: $guest = $key;
5046: } elsif ($scope eq 'domains') {
5047: push(@domains,$key);
5048: } elsif ($scope eq 'users') {
5049: push(@users,$key);
5050: } elsif ($scope eq 'course') {
5051: push(@courses,$key);
5052: } elsif ($scope eq 'group') {
5053: push(@groups,$key);
5054: }
5055: }
5056: if ($public) {
5057: return 'ok';
5058: }
5059: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5060: if ($guest) {
5061: return $guest;
5062: }
5063: } else {
5064: if (@domains > 0) {
5065: foreach my $domkey (@domains) {
5066: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5067: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5068: return 'ok';
5069: }
5070: }
5071: }
5072: }
5073: if (@users > 0) {
5074: foreach my $userkey (@users) {
5075: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5076: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5077: if (ref($item) eq 'HASH') {
5078: if (($item->{'uname'} eq $env{'user.name'}) &&
5079: ($item->{'udom'} eq $env{'user.domain'})) {
5080: return 'ok';
5081: }
5082: }
5083: }
5084: }
5085: }
5086: }
5087: my %roleshash;
5088: my @courses_and_groups = @courses;
5089: push(@courses_and_groups,@groups);
5090: if (@courses_and_groups > 0) {
5091: my (%allgroups,%allroles);
5092: my ($start,$end,$role,$sec,$group);
5093: foreach my $envkey (%env) {
5094: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5095: my $cid = $2.'_'.$3;
5096: if ($1 eq 'gr') {
5097: $group = $4;
5098: $allgroups{$cid}{$group} = $env{$envkey};
5099: } else {
5100: if ($4 eq '') {
5101: $sec = 'none';
5102: } else {
5103: $sec = $4;
5104: }
5105: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5106: }
5107: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5108: my $cid = $2.'_'.$3;
5109: if ($4 eq '') {
5110: $sec = 'none';
5111: } else {
5112: $sec = $4;
5113: }
5114: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5115: }
5116: }
5117: if (keys(%allroles) == 0) {
5118: return;
5119: }
5120: foreach my $key (@courses_and_groups) {
5121: my %content = %{$$access_hash{$key}};
5122: my $cnum = $content{'number'};
5123: my $cdom = $content{'domain'};
5124: my $cid = $cdom.'_'.$cnum;
5125: if (!exists($allroles{$cid})) {
5126: next;
5127: }
5128: foreach my $role_id (keys(%{$content{'roles'}})) {
5129: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5130: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5131: my @status = @{$content{'roles'}{$role_id}{'access'}};
5132: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5133: foreach my $role (keys(%{$allroles{$cid}})) {
5134: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5135: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5136: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5137: if (grep/^all$/,@sections) {
5138: return 'ok';
5139: } else {
5140: if (grep/^$sec$/,@sections) {
5141: return 'ok';
5142: }
5143: }
5144: }
5145: }
5146: if (keys(%{$allgroups{$cid}}) == 0) {
5147: if (grep/^none$/,@groups) {
5148: return 'ok';
5149: }
5150: } else {
5151: if (grep/^all$/,@groups) {
5152: return 'ok';
5153: }
5154: foreach my $group (keys(%{$allgroups{$cid}})) {
5155: if (grep/^$group$/,@groups) {
5156: return 'ok';
5157: }
5158: }
5159: }
5160: }
5161: }
5162: }
5163: }
5164: }
5165: if ($guest) {
5166: return $guest;
5167: }
5168: }
5169: }
5170: return;
5171: }
5172:
5173: sub course_group_datechecker {
5174: my ($dates,$now,$status) = @_;
5175: my ($start,$end) = split(/\./,$dates);
5176: if (!$start && !$end) {
5177: return 'ok';
5178: }
5179: if (grep/^active$/,@{$status}) {
5180: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5181: return 'ok';
5182: }
5183: }
5184: if (grep/^previous$/,@{$status}) {
5185: if ($end > $now ) {
5186: return 'ok';
5187: }
5188: }
5189: if (grep/^future$/,@{$status}) {
5190: if ($start > $now) {
5191: return 'ok';
5192: }
5193: }
5194: return;
5195: }
5196:
5197: sub parse_portfolio_url {
5198: my ($url) = @_;
5199:
5200: my ($type,$udom,$unum,$group,$file_name);
5201:
5202: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5203: $type = 1;
5204: $udom = $1;
5205: $unum = $2;
5206: $file_name = $3;
5207: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5208: $type = 2;
5209: $udom = $1;
5210: $unum = $2;
5211: $group = $3;
5212: $file_name = $3.'/'.$4;
5213: }
5214: if (wantarray) {
5215: return ($type,$udom,$unum,$file_name,$group);
5216: }
5217: return $type;
5218: }
5219:
5220: sub is_portfolio_url {
5221: my ($url) = @_;
5222: return scalar(&parse_portfolio_url($url));
5223: }
5224:
5225: sub is_portfolio_file {
5226: my ($file) = @_;
5227: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5228: return 1;
5229: }
5230: return;
5231: }
5232:
5233: sub usertools_access {
5234: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5235: my ($access,%tools);
5236: if ($context eq '') {
5237: $context = 'tools';
5238: }
5239: if ($context eq 'requestcourses') {
5240: %tools = (
5241: official => 1,
5242: unofficial => 1,
5243: community => 1,
5244: );
5245: } else {
5246: %tools = (
5247: aboutme => 1,
5248: blog => 1,
5249: portfolio => 1,
5250: );
5251: }
5252: return if (!defined($tools{$tool}));
5253:
5254: if ((!defined($udom)) || (!defined($uname))) {
5255: $udom = $env{'user.domain'};
5256: $uname = $env{'user.name'};
5257: }
5258:
5259: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5260: if ($action ne 'reload') {
5261: if ($context eq 'requestcourses') {
5262: return $env{'environment.canrequest.'.$tool};
5263: } else {
5264: return $env{'environment.availabletools.'.$tool};
5265: }
5266: }
5267: }
5268:
5269: my ($toolstatus,$inststatus);
5270:
5271: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5272: ($action ne 'reload')) {
5273: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5274: $inststatus = $env{'environment.inststatus'};
5275: } else {
5276: if (ref($userenvref) eq 'HASH') {
5277: $toolstatus = $userenvref->{$context.'.'.$tool};
5278: $inststatus = $userenvref->{'inststatus'};
5279: } else {
5280: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5281: $toolstatus = $userenv{$context.'.'.$tool};
5282: $inststatus = $userenv{'inststatus'};
5283: }
5284: }
5285:
5286: if ($toolstatus ne '') {
5287: if ($toolstatus) {
5288: $access = 1;
5289: } else {
5290: $access = 0;
5291: }
5292: return $access;
5293: }
5294:
5295: my ($is_adv,%domdef);
5296: if (ref($is_advref) eq 'HASH') {
5297: $is_adv = $is_advref->{'is_adv'};
5298: } else {
5299: $is_adv = &is_advanced_user($udom,$uname);
5300: }
5301: if (ref($domdefref) eq 'HASH') {
5302: %domdef = %{$domdefref};
5303: } else {
5304: %domdef = &get_domain_defaults($udom);
5305: }
5306: if (ref($domdef{$tool}) eq 'HASH') {
5307: if ($is_adv) {
5308: if ($domdef{$tool}{'_LC_adv'} ne '') {
5309: if ($domdef{$tool}{'_LC_adv'}) {
5310: $access = 1;
5311: } else {
5312: $access = 0;
5313: }
5314: return $access;
5315: }
5316: }
5317: if ($inststatus ne '') {
5318: my ($hasaccess,$hasnoaccess);
5319: foreach my $affiliation (split(/:/,$inststatus)) {
5320: if ($domdef{$tool}{$affiliation} ne '') {
5321: if ($domdef{$tool}{$affiliation}) {
5322: $hasaccess = 1;
5323: } else {
5324: $hasnoaccess = 1;
5325: }
5326: }
5327: }
5328: if ($hasaccess || $hasnoaccess) {
5329: if ($hasaccess) {
5330: $access = 1;
5331: } elsif ($hasnoaccess) {
5332: $access = 0;
5333: }
5334: return $access;
5335: }
5336: } else {
5337: if ($domdef{$tool}{'default'} ne '') {
5338: if ($domdef{$tool}{'default'}) {
5339: $access = 1;
5340: } elsif ($domdef{$tool}{'default'} == 0) {
5341: $access = 0;
5342: }
5343: return $access;
5344: }
5345: }
5346: } else {
5347: if ($context eq 'tools') {
5348: $access = 1;
5349: } else {
5350: $access = 0;
5351: }
5352: return $access;
5353: }
5354: }
5355:
5356: sub is_course_owner {
5357: my ($cdom,$cnum,$udom,$uname) = @_;
5358: if (($udom eq '') || ($uname eq '')) {
5359: $udom = $env{'user.domain'};
5360: $uname = $env{'user.name'};
5361: }
5362: unless (($udom eq '') || ($uname eq '')) {
5363: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5364: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5365: return 1;
5366: } else {
5367: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5368: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5369: return 1;
5370: }
5371: }
5372: }
5373: }
5374: return;
5375: }
5376:
5377: sub is_advanced_user {
5378: my ($udom,$uname) = @_;
5379: if ($udom ne '' && $uname ne '') {
5380: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5381: if (wantarray) {
5382: return ($env{'user.adv'},$env{'user.author'});
5383: } else {
5384: return $env{'user.adv'};
5385: }
5386: }
5387: }
5388: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5389: my %allroles;
5390: my ($is_adv,$is_author);
5391: foreach my $role (keys(%roleshash)) {
5392: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5393: my $area = '/'.$tdomain.'/'.$trest;
5394: if ($sec ne '') {
5395: $area .= '/'.$sec;
5396: }
5397: if (($area ne '') && ($trole ne '')) {
5398: my $spec=$trole.'.'.$area;
5399: if ($trole =~ /^cr\//) {
5400: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5401: } elsif ($trole ne 'gr') {
5402: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5403: }
5404: if ($trole eq 'au') {
5405: $is_author = 1;
5406: }
5407: }
5408: }
5409: foreach my $role (keys(%allroles)) {
5410: last if ($is_adv);
5411: foreach my $item (split(/:/,$allroles{$role})) {
5412: if ($item ne '') {
5413: my ($privilege,$restrictions)=split(/&/,$item);
5414: if ($privilege eq 'adv') {
5415: $is_adv = 1;
5416: last;
5417: }
5418: }
5419: }
5420: }
5421: if (wantarray) {
5422: return ($is_adv,$is_author);
5423: }
5424: return $is_adv;
5425: }
5426:
5427: sub check_can_request {
5428: my ($dom,$can_request,$request_domains) = @_;
5429: my $canreq = 0;
5430: my ($types,$typename) = &Apache::loncommon::course_types();
5431: my @options = ('approval','validate','autolimit');
5432: my $optregex = join('|',@options);
5433: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5434: foreach my $type (@{$types}) {
5435: if (&usertools_access($env{'user.name'},
5436: $env{'user.domain'},
5437: $type,undef,'requestcourses')) {
5438: $canreq ++;
5439: if (ref($request_domains) eq 'HASH') {
5440: push(@{$request_domains->{$type}},$env{'user.domain'});
5441: }
5442: if ($dom eq $env{'user.domain'}) {
5443: $can_request->{$type} = 1;
5444: }
5445: }
5446: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5447: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5448: if (@curr > 0) {
5449: foreach my $item (@curr) {
5450: if (ref($request_domains) eq 'HASH') {
5451: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5452: if ($otherdom ne '') {
5453: if (ref($request_domains->{$type}) eq 'ARRAY') {
5454: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5455: push(@{$request_domains->{$type}},$otherdom);
5456: }
5457: } else {
5458: push(@{$request_domains->{$type}},$otherdom);
5459: }
5460: }
5461: }
5462: }
5463: unless($dom eq $env{'user.domain'}) {
5464: $canreq ++;
5465: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5466: $can_request->{$type} = 1;
5467: }
5468: }
5469: }
5470: }
5471: }
5472: }
5473: return $canreq;
5474: }
5475:
5476: # ---------------------------------------------- Custom access rule evaluation
5477:
5478: sub customaccess {
5479: my ($priv,$uri)=@_;
5480: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5481: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5482: $udom = &LONCAPA::clean_domain($udom);
5483: $ucrs = &LONCAPA::clean_username($ucrs);
5484: my $access=0;
5485: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5486: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5487: if ($type eq 'user') {
5488: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5489: my ($tdom,$tuname)=split(m{/},$scope);
5490: if ($tdom) {
5491: if ($tdom ne $env{'user.domain'}) { next; }
5492: }
5493: if ($tuname) {
5494: if ($tuname ne $env{'user.name'}) { next; }
5495: }
5496: $access=($effect eq 'allow');
5497: last;
5498: }
5499: } else {
5500: if ($role) {
5501: if ($role ne $urole) { next; }
5502: }
5503: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5504: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5505: if ($tdom) {
5506: if ($tdom ne $udom) { next; }
5507: }
5508: if ($tcrs) {
5509: if ($tcrs ne $ucrs) { next; }
5510: }
5511: if ($tsec) {
5512: if ($tsec ne $usec) { next; }
5513: }
5514: $access=($effect eq 'allow');
5515: last;
5516: }
5517: if ($realm eq '' && $role eq '') {
5518: $access=($effect eq 'allow');
5519: }
5520: }
5521: }
5522: return $access;
5523: }
5524:
5525: # ------------------------------------------------- Check for a user privilege
5526:
5527: sub allowed {
5528: my ($priv,$uri,$symb,$role)=@_;
5529: my $ver_orguri=$uri;
5530: $uri=&deversion($uri);
5531: my $orguri=$uri;
5532: $uri=&declutter($uri);
5533:
5534: if ($priv eq 'evb') {
5535: # Evade communication block restrictions for specified role in a course
5536: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5537: return $1;
5538: } else {
5539: return;
5540: }
5541: }
5542:
5543: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5544: # Free bre access to adm and meta resources
5545: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5546: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5547: && ($priv eq 'bre')) {
5548: return 'F';
5549: }
5550:
5551: # Free bre access to user's own portfolio contents
5552: my ($space,$domain,$name,@dir)=split('/',$uri);
5553: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5554: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5555: my %setters;
5556: my ($startblock,$endblock) =
5557: &Apache::loncommon::blockcheck(\%setters,'port');
5558: if ($startblock && $endblock) {
5559: return 'B';
5560: } else {
5561: return 'F';
5562: }
5563: }
5564:
5565: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5566: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5567: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5568: if (exists($env{'request.course.id'})) {
5569: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5570: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5571: if (($domain eq $cdom) && ($name eq $cnum)) {
5572: my $courseprivid=$env{'request.course.id'};
5573: $courseprivid=~s/\_/\//;
5574: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5575: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5576: return $1;
5577: } else {
5578: if ($env{'request.course.sec'}) {
5579: $courseprivid.='/'.$env{'request.course.sec'};
5580: }
5581: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5582: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5583: return $2;
5584: }
5585: }
5586: }
5587: }
5588: }
5589:
5590: # Free bre to public access
5591:
5592: if ($priv eq 'bre') {
5593: my $copyright=&metadata($uri,'copyright');
5594: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5595: return 'F';
5596: }
5597: if ($copyright eq 'priv') {
5598: $uri=~/([^\/]+)\/([^\/]+)\//;
5599: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5600: return '';
5601: }
5602: }
5603: if ($copyright eq 'domain') {
5604: $uri=~/([^\/]+)\/([^\/]+)\//;
5605: unless (($env{'user.domain'} eq $1) ||
5606: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5607: return '';
5608: }
5609: }
5610: if ($env{'request.role'}=~ /li\.\//) {
5611: # Library role, so allow browsing of resources in this domain.
5612: return 'F';
5613: }
5614: if ($copyright eq 'custom') {
5615: unless (&customaccess($priv,$uri)) { return ''; }
5616: }
5617: }
5618: # Domain coordinator is trying to create a course
5619: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5620: # uri is the requested domain in this case.
5621: # comparison to 'request.role.domain' shows if the user has selected
5622: # a role of dc for the domain in question.
5623: return 'F' if ($uri eq $env{'request.role.domain'});
5624: }
5625:
5626: my $thisallowed='';
5627: my $statecond=0;
5628: my $courseprivid='';
5629:
5630: my $ownaccess;
5631: # Community Coordinator or Assistant Co-author browsing resource space.
5632: if (($priv eq 'bro') && ($env{'user.author'})) {
5633: if ($uri eq '') {
5634: $ownaccess = 1;
5635: } else {
5636: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5637: my $udom = $env{'user.domain'};
5638: my $uname = $env{'user.name'};
5639: if ($uri =~ m{^\Q$udom\E/?$}) {
5640: $ownaccess = 1;
5641: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5642: unless ($uri =~ m{\.\./}) {
5643: $ownaccess = 1;
5644: }
5645: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5646: my $now = time;
5647: if ($uri =~ m{^([^/]+)/?$}) {
5648: my $adom = $1;
5649: foreach my $key (keys(%env)) {
5650: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5651: my ($start,$end) = split('.',$env{$key});
5652: if (($now >= $start) && (!$end || $end < $now)) {
5653: $ownaccess = 1;
5654: last;
5655: }
5656: }
5657: }
5658: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5659: my $adom = $1;
5660: my $aname = $2;
5661: foreach my $role ('ca','aa') {
5662: if ($env{"user.role.$role./$adom/$aname"}) {
5663: my ($start,$end) =
5664: split('.',$env{"user.role.$role./$adom/$aname"});
5665: if (($now >= $start) && (!$end || $end < $now)) {
5666: $ownaccess = 1;
5667: last;
5668: }
5669: }
5670: }
5671: }
5672: }
5673: }
5674: }
5675: }
5676:
5677: # Course
5678:
5679: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5680: unless (($priv eq 'bro') && (!$ownaccess)) {
5681: $thisallowed.=$1;
5682: }
5683: }
5684:
5685: # Domain
5686:
5687: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5688: =~/\Q$priv\E\&([^\:]*)/) {
5689: unless (($priv eq 'bro') && (!$ownaccess)) {
5690: $thisallowed.=$1;
5691: }
5692: }
5693:
5694: # Course: uri itself is a course
5695: my $courseuri=$uri;
5696: $courseuri=~s/\_(\d)/\/$1/;
5697: $courseuri=~s/^([^\/])/\/$1/;
5698:
5699: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5700: =~/\Q$priv\E\&([^\:]*)/) {
5701: unless (($priv eq 'bro') && (!$ownaccess)) {
5702: $thisallowed.=$1;
5703: }
5704: }
5705:
5706: # URI is an uploaded document for this course, default permissions don't matter
5707: # not allowing 'edit' access (editupload) to uploaded course docs
5708: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5709: $thisallowed='';
5710: my ($match)=&is_on_map($uri);
5711: if ($match) {
5712: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5713: =~/\Q$priv\E\&([^\:]*)/) {
5714: $thisallowed.=$1;
5715: }
5716: } else {
5717: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5718: if ($refuri) {
5719: if ($refuri =~ m|^/adm/|) {
5720: $thisallowed='F';
5721: } else {
5722: $refuri=&declutter($refuri);
5723: my ($match) = &is_on_map($refuri);
5724: if ($match) {
5725: $thisallowed='F';
5726: }
5727: }
5728: }
5729: }
5730: }
5731:
5732: if ($priv eq 'bre'
5733: && $thisallowed ne 'F'
5734: && $thisallowed ne '2'
5735: && &is_portfolio_url($uri)) {
5736: $thisallowed = &portfolio_access($uri);
5737: }
5738:
5739: # Full access at system, domain or course-wide level? Exit.
5740: if ($thisallowed=~/F/) {
5741: return 'F';
5742: }
5743:
5744: # If this is generating or modifying users, exit with special codes
5745:
5746: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5747: if (($priv eq 'cca') || ($priv eq 'caa')) {
5748: my ($audom,$auname)=split('/',$uri);
5749: # no author name given, so this just checks on the general right to make a co-author in this domain
5750: unless ($auname) { return $thisallowed; }
5751: # an author name is given, so we are about to actually make a co-author for a certain account
5752: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5753: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5754: ($audom ne $env{'request.role.domain'}))) { return ''; }
5755: }
5756: return $thisallowed;
5757: }
5758: #
5759: # Gathered so far: system, domain and course wide privileges
5760: #
5761: # Course: See if uri or referer is an individual resource that is part of
5762: # the course
5763:
5764: if ($env{'request.course.id'}) {
5765:
5766: $courseprivid=$env{'request.course.id'};
5767: if ($env{'request.course.sec'}) {
5768: $courseprivid.='/'.$env{'request.course.sec'};
5769: }
5770: $courseprivid=~s/\_/\//;
5771: my $checkreferer=1;
5772: my ($match,$cond)=&is_on_map($uri);
5773: if ($match) {
5774: $statecond=$cond;
5775: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5776: =~/\Q$priv\E\&([^\:]*)/) {
5777: $thisallowed.=$1;
5778: $checkreferer=0;
5779: }
5780: }
5781:
5782: if ($checkreferer) {
5783: my $refuri=$env{'httpref.'.$orguri};
5784: unless ($refuri) {
5785: foreach my $key (keys(%env)) {
5786: if ($key=~/^httpref\..*\*/) {
5787: my $pattern=$key;
5788: $pattern=~s/^httpref\.\/res\///;
5789: $pattern=~s/\*/\[\^\/\]\+/g;
5790: $pattern=~s/\//\\\//g;
5791: if ($orguri=~/$pattern/) {
5792: $refuri=$env{$key};
5793: }
5794: }
5795: }
5796: }
5797:
5798: if ($refuri) {
5799: $refuri=&declutter($refuri);
5800: my ($match,$cond)=&is_on_map($refuri);
5801: if ($match) {
5802: my $refstatecond=$cond;
5803: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5804: =~/\Q$priv\E\&([^\:]*)/) {
5805: $thisallowed.=$1;
5806: $uri=$refuri;
5807: $statecond=$refstatecond;
5808: }
5809: }
5810: }
5811: }
5812: }
5813:
5814: #
5815: # Gathered now: all privileges that could apply, and condition number
5816: #
5817: #
5818: # Full or no access?
5819: #
5820:
5821: if ($thisallowed=~/F/) {
5822: return 'F';
5823: }
5824:
5825: unless ($thisallowed) {
5826: return '';
5827: }
5828:
5829: # Restrictions exist, deal with them
5830: #
5831: # C:according to course preferences
5832: # R:according to resource settings
5833: # L:unless locked
5834: # X:according to user session state
5835: #
5836:
5837: # Possibly locked functionality, check all courses
5838: # Locks might take effect only after 10 minutes cache expiration for other
5839: # courses, and 2 minutes for current course
5840:
5841: my $envkey;
5842: if ($thisallowed=~/L/) {
5843: foreach $envkey (keys(%env)) {
5844: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5845: my $courseid=$2;
5846: my $roleid=$1.'.'.$2;
5847: $courseid=~s/^\///;
5848: my $expiretime=600;
5849: if ($env{'request.role'} eq $roleid) {
5850: $expiretime=120;
5851: }
5852: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5853: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5854: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5855: &coursedescription($courseid,{'freshen_cache' => 1});
5856: }
5857: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5858: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5859: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5860: &log($env{'user.domain'},$env{'user.name'},
5861: $env{'user.home'},
5862: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5863: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5864: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5865: return '';
5866: }
5867: }
5868: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5869: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5870: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5871: &log($env{'user.domain'},$env{'user.name'},
5872: $env{'user.home'},
5873: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5874: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5875: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5876: return '';
5877: }
5878: }
5879: }
5880: }
5881: }
5882:
5883: #
5884: # Rest of the restrictions depend on selected course
5885: #
5886:
5887: unless ($env{'request.course.id'}) {
5888: if ($thisallowed eq 'A') {
5889: return 'A';
5890: } elsif ($thisallowed eq 'B') {
5891: return 'B';
5892: } else {
5893: return '1';
5894: }
5895: }
5896:
5897: #
5898: # Now user is definitely in a course
5899: #
5900:
5901:
5902: # Course preferences
5903:
5904: if ($thisallowed=~/C/) {
5905: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5906: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5907: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5908: =~/\Q$rolecode\E/) {
5909: if (($priv ne 'pch') && ($priv ne 'plc')) {
5910: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5911: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5912: $env{'request.course.id'});
5913: }
5914: return '';
5915: }
5916:
5917: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5918: =~/\Q$unamedom\E/) {
5919: if (($priv ne 'pch') && ($priv ne 'plc')) {
5920: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5921: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5922: $env{'request.course.id'});
5923: }
5924: return '';
5925: }
5926: }
5927:
5928: # Resource preferences
5929:
5930: if ($thisallowed=~/R/) {
5931: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5932: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5933: if (($priv ne 'pch') && ($priv ne 'plc')) {
5934: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5935: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5936: }
5937: return '';
5938: }
5939: }
5940:
5941: # Restricted by state or randomout?
5942:
5943: if ($thisallowed=~/X/) {
5944: if ($env{'acc.randomout'}) {
5945: if (!$symb) { $symb=&symbread($uri,1); }
5946: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5947: return '';
5948: }
5949: }
5950: if (&condval($statecond)) {
5951: return '2';
5952: } else {
5953: return '';
5954: }
5955: }
5956:
5957: if ($thisallowed eq 'A') {
5958: return 'A';
5959: } elsif ($thisallowed eq 'B') {
5960: return 'B';
5961: }
5962: return 'F';
5963: }
5964:
5965: sub split_uri_for_cond {
5966: my $uri=&deversion(&declutter(shift));
5967: my @uriparts=split(/\//,$uri);
5968: my $filename=pop(@uriparts);
5969: my $pathname=join('/',@uriparts);
5970: return ($pathname,$filename);
5971: }
5972: # --------------------------------------------------- Is a resource on the map?
5973:
5974: sub is_on_map {
5975: my ($pathname,$filename) = &split_uri_for_cond(shift);
5976: #Trying to find the conditional for the file
5977: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5978: /\&\Q$filename\E\:([\d\|]+)\&/);
5979: if ($match) {
5980: return (1,$1);
5981: } else {
5982: return (0,0);
5983: }
5984: }
5985:
5986: # --------------------------------------------------------- Get symb from alias
5987:
5988: sub get_symb_from_alias {
5989: my $symb=shift;
5990: my ($map,$resid,$url)=&decode_symb($symb);
5991: # Already is a symb
5992: if ($url) { return $symb; }
5993: # Must be an alias
5994: my $aliassymb='';
5995: my %bighash;
5996: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5997: &GDBM_READER(),0640)) {
5998: my $rid=$bighash{'mapalias_'.$symb};
5999: if ($rid) {
6000: my ($mapid,$resid)=split(/\./,$rid);
6001: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6002: $resid,$bighash{'src_'.$rid});
6003: }
6004: untie %bighash;
6005: }
6006: return $aliassymb;
6007: }
6008:
6009: # ----------------------------------------------------------------- Define Role
6010:
6011: sub definerole {
6012: if (allowed('mcr','/')) {
6013: my ($rolename,$sysrole,$domrole,$courole)=@_;
6014: foreach my $role (split(':',$sysrole)) {
6015: my ($crole,$cqual)=split(/\&/,$role);
6016: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6017: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6018: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6019: return "refused:s:$crole&$cqual";
6020: }
6021: }
6022: }
6023: foreach my $role (split(':',$domrole)) {
6024: my ($crole,$cqual)=split(/\&/,$role);
6025: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6026: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6027: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6028: return "refused:d:$crole&$cqual";
6029: }
6030: }
6031: }
6032: foreach my $role (split(':',$courole)) {
6033: my ($crole,$cqual)=split(/\&/,$role);
6034: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6035: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6036: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6037: return "refused:c:$crole&$cqual";
6038: }
6039: }
6040: }
6041: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6042: "$env{'user.domain'}:$env{'user.name'}:".
6043: "rolesdef_$rolename=".
6044: escape($sysrole.'_'.$domrole.'_'.$courole);
6045: return reply($command,$env{'user.home'});
6046: } else {
6047: return 'refused';
6048: }
6049: }
6050:
6051: # ---------------- Make a metadata query against the network of library servers
6052:
6053: sub metadata_query {
6054: my ($query,$custom,$customshow,$server_array)=@_;
6055: my %rhash;
6056: my %libserv = &all_library();
6057: my @server_list = (defined($server_array) ? @$server_array
6058: : keys(%libserv) );
6059: for my $server (@server_list) {
6060: unless ($custom or $customshow) {
6061: my $reply=&reply("querysend:".&escape($query),$server);
6062: $rhash{$server}=$reply;
6063: }
6064: else {
6065: my $reply=&reply("querysend:".&escape($query).':'.
6066: &escape($custom).':'.&escape($customshow),
6067: $server);
6068: $rhash{$server}=$reply;
6069: }
6070: }
6071: return \%rhash;
6072: }
6073:
6074: # ----------------------------------------- Send log queries and wait for reply
6075:
6076: sub log_query {
6077: my ($uname,$udom,$query,%filters)=@_;
6078: my $uhome=&homeserver($uname,$udom);
6079: if ($uhome eq 'no_host') { return 'error: no_host'; }
6080: my $uhost=&hostname($uhome);
6081: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6082: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6083: $uhome);
6084: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6085: return get_query_reply($queryid);
6086: }
6087:
6088: # -------------------------- Update MySQL table for portfolio file
6089:
6090: sub update_portfolio_table {
6091: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6092: if ($group ne '') {
6093: $file_name =~s /^\Q$group\E//;
6094: }
6095: my $homeserver = &homeserver($uname,$udom);
6096: my $queryid=
6097: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6098: ':'.&escape($file_name).':'.$action,$homeserver);
6099: my $reply = &get_query_reply($queryid);
6100: return $reply;
6101: }
6102:
6103: # -------------------------- Update MySQL allusers table
6104:
6105: sub update_allusers_table {
6106: my ($uname,$udom,$names) = @_;
6107: my $homeserver = &homeserver($uname,$udom);
6108: my $queryid=
6109: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6110: 'lastname='.&escape($names->{'lastname'}).'%%'.
6111: 'firstname='.&escape($names->{'firstname'}).'%%'.
6112: 'middlename='.&escape($names->{'middlename'}).'%%'.
6113: 'generation='.&escape($names->{'generation'}).'%%'.
6114: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6115: 'id='.&escape($names->{'id'}),$homeserver);
6116: return;
6117: }
6118:
6119: # ------- Request retrieval of institutional classlists for course(s)
6120:
6121: sub fetch_enrollment_query {
6122: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6123: my $homeserver;
6124: my $maxtries = 1;
6125: if ($context eq 'automated') {
6126: $homeserver = $perlvar{'lonHostID'};
6127: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6128: } else {
6129: $homeserver = &homeserver($cnum,$dom);
6130: }
6131: my $host=&hostname($homeserver);
6132: my $cmd = '';
6133: foreach my $affiliate (keys(%{$affiliatesref})) {
6134: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6135: }
6136: $cmd =~ s/%%$//;
6137: $cmd = &escape($cmd);
6138: my $query = 'fetchenrollment';
6139: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6140: unless ($queryid=~/^\Q$host\E\_/) {
6141: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6142: return 'error: '.$queryid;
6143: }
6144: my $reply = &get_query_reply($queryid);
6145: my $tries = 1;
6146: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6147: $reply = &get_query_reply($queryid);
6148: $tries ++;
6149: }
6150: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6151: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6152: } else {
6153: my @responses = split(/:/,$reply);
6154: if ($homeserver eq $perlvar{'lonHostID'}) {
6155: foreach my $line (@responses) {
6156: my ($key,$value) = split(/=/,$line,2);
6157: $$replyref{$key} = $value;
6158: }
6159: } else {
6160: my $pathname = LONCAPA::tempdir();
6161: foreach my $line (@responses) {
6162: my ($key,$value) = split(/=/,$line);
6163: $$replyref{$key} = $value;
6164: if ($value > 0) {
6165: foreach my $item (@{$$affiliatesref{$key}}) {
6166: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6167: my $destname = $pathname.'/'.$filename;
6168: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6169: if ($xml_classlist =~ /^error/) {
6170: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6171: } else {
6172: if ( open(FILE,">$destname") ) {
6173: print FILE &unescape($xml_classlist);
6174: close(FILE);
6175: } else {
6176: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6177: }
6178: }
6179: }
6180: }
6181: }
6182: }
6183: return 'ok';
6184: }
6185: return 'error';
6186: }
6187:
6188: sub get_query_reply {
6189: my $queryid=shift;
6190: my $replyfile=LONCAPA::tempdir().$queryid;
6191: my $reply='';
6192: for (1..100) {
6193: sleep 2;
6194: if (-e $replyfile.'.end') {
6195: if (open(my $fh,$replyfile)) {
6196: $reply = join('',<$fh>);
6197: close($fh);
6198: } else { return 'error: reply_file_error'; }
6199: return &unescape($reply);
6200: }
6201: }
6202: return 'timeout:'.$queryid;
6203: }
6204:
6205: sub courselog_query {
6206: #
6207: # possible filters:
6208: # url: url or symb
6209: # username
6210: # domain
6211: # action: view, submit, grade
6212: # start: timestamp
6213: # end: timestamp
6214: #
6215: my (%filters)=@_;
6216: unless ($env{'request.course.id'}) { return 'no_course'; }
6217: if ($filters{'url'}) {
6218: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6219: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6220: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6221: }
6222: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6223: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6224: return &log_query($cname,$cdom,'courselog',%filters);
6225: }
6226:
6227: sub userlog_query {
6228: #
6229: # possible filters:
6230: # action: log check role
6231: # start: timestamp
6232: # end: timestamp
6233: #
6234: my ($uname,$udom,%filters)=@_;
6235: return &log_query($uname,$udom,'userlog',%filters);
6236: }
6237:
6238: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6239:
6240: sub auto_run {
6241: my ($cnum,$cdom) = @_;
6242: my $response = 0;
6243: my $settings;
6244: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6245: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6246: $settings = $domconfig{'autoenroll'};
6247: if ($settings->{'run'} eq '1') {
6248: $response = 1;
6249: }
6250: } else {
6251: my $homeserver;
6252: if (&is_course($cdom,$cnum)) {
6253: $homeserver = &homeserver($cnum,$cdom);
6254: } else {
6255: $homeserver = &domain($cdom,'primary');
6256: }
6257: if ($homeserver ne 'no_host') {
6258: $response = &reply('autorun:'.$cdom,$homeserver);
6259: }
6260: }
6261: return $response;
6262: }
6263:
6264: sub auto_get_sections {
6265: my ($cnum,$cdom,$inst_coursecode) = @_;
6266: my $homeserver;
6267: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6268: $homeserver = &homeserver($cnum,$cdom);
6269: }
6270: if (!defined($homeserver)) {
6271: if ($cdom =~ /^$match_domain$/) {
6272: $homeserver = &domain($cdom,'primary');
6273: }
6274: }
6275: my @secs;
6276: if (defined($homeserver)) {
6277: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6278: unless ($response eq 'refused') {
6279: @secs = split(/:/,$response);
6280: }
6281: }
6282: return @secs;
6283: }
6284:
6285: sub auto_new_course {
6286: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6287: my $homeserver = &homeserver($cnum,$cdom);
6288: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6289: return $response;
6290: }
6291:
6292: sub auto_validate_courseID {
6293: my ($cnum,$cdom,$inst_course_id) = @_;
6294: my $homeserver = &homeserver($cnum,$cdom);
6295: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6296: return $response;
6297: }
6298:
6299: sub auto_validate_instcode {
6300: my ($cnum,$cdom,$instcode,$owner) = @_;
6301: my ($homeserver,$response);
6302: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6303: $homeserver = &homeserver($cnum,$cdom);
6304: }
6305: if (!defined($homeserver)) {
6306: if ($cdom =~ /^$match_domain$/) {
6307: $homeserver = &domain($cdom,'primary');
6308: }
6309: }
6310: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6311: &escape($instcode).':'.&escape($owner),$homeserver));
6312: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6313: return ($outcome,$description);
6314: }
6315:
6316: sub auto_create_password {
6317: my ($cnum,$cdom,$authparam,$udom) = @_;
6318: my ($homeserver,$response);
6319: my $create_passwd = 0;
6320: my $authchk = '';
6321: if ($udom =~ /^$match_domain$/) {
6322: $homeserver = &domain($udom,'primary');
6323: }
6324: if ($homeserver eq '') {
6325: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6326: $homeserver = &homeserver($cnum,$cdom);
6327: }
6328: }
6329: if ($homeserver eq '') {
6330: $authchk = 'nodomain';
6331: } else {
6332: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6333: if ($response eq 'refused') {
6334: $authchk = 'refused';
6335: } else {
6336: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6337: }
6338: }
6339: return ($authparam,$create_passwd,$authchk);
6340: }
6341:
6342: sub auto_photo_permission {
6343: my ($cnum,$cdom,$students) = @_;
6344: my $homeserver = &homeserver($cnum,$cdom);
6345: my ($outcome,$perm_reqd,$conditions) =
6346: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6347: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6348: return (undef,undef);
6349: }
6350: return ($outcome,$perm_reqd,$conditions);
6351: }
6352:
6353: sub auto_checkphotos {
6354: my ($uname,$udom,$pid) = @_;
6355: my $homeserver = &homeserver($uname,$udom);
6356: my ($result,$resulttype);
6357: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6358: &escape($uname).':'.&escape($pid),
6359: $homeserver));
6360: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6361: return (undef,undef);
6362: }
6363: if ($outcome) {
6364: ($result,$resulttype) = split(/:/,$outcome);
6365: }
6366: return ($result,$resulttype);
6367: }
6368:
6369: sub auto_photochoice {
6370: my ($cnum,$cdom) = @_;
6371: my $homeserver = &homeserver($cnum,$cdom);
6372: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6373: &escape($cdom),
6374: $homeserver)));
6375: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6376: return (undef,undef);
6377: }
6378: return ($update,$comment);
6379: }
6380:
6381: sub auto_photoupdate {
6382: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6383: my $homeserver = &homeserver($cnum,$dom);
6384: my $host=&hostname($homeserver);
6385: my $cmd = '';
6386: my $maxtries = 1;
6387: foreach my $affiliate (keys(%{$affiliatesref})) {
6388: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6389: }
6390: $cmd =~ s/%%$//;
6391: $cmd = &escape($cmd);
6392: my $query = 'institutionalphotos';
6393: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6394: unless ($queryid=~/^\Q$host\E\_/) {
6395: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6396: return 'error: '.$queryid;
6397: }
6398: my $reply = &get_query_reply($queryid);
6399: my $tries = 1;
6400: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6401: $reply = &get_query_reply($queryid);
6402: $tries ++;
6403: }
6404: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6405: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6406: } else {
6407: my @responses = split(/:/,$reply);
6408: my $outcome = shift(@responses);
6409: foreach my $item (@responses) {
6410: my ($key,$value) = split(/=/,$item);
6411: $$photo{$key} = $value;
6412: }
6413: return $outcome;
6414: }
6415: return 'error';
6416: }
6417:
6418: sub auto_instcode_format {
6419: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6420: $cat_order) = @_;
6421: my $courses = '';
6422: my @homeservers;
6423: if ($caller eq 'global') {
6424: my %servers = &get_servers($codedom,'library');
6425: foreach my $tryserver (keys(%servers)) {
6426: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6427: push(@homeservers,$tryserver);
6428: }
6429: }
6430: } elsif ($caller eq 'requests') {
6431: if ($codedom =~ /^$match_domain$/) {
6432: my $chome = &domain($codedom,'primary');
6433: unless ($chome eq 'no_host') {
6434: push(@homeservers,$chome);
6435: }
6436: }
6437: } else {
6438: push(@homeservers,&homeserver($caller,$codedom));
6439: }
6440: foreach my $code (keys(%{$instcodes})) {
6441: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6442: }
6443: chop($courses);
6444: my $ok_response = 0;
6445: my $response;
6446: while (@homeservers > 0 && $ok_response == 0) {
6447: my $server = shift(@homeservers);
6448: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6449: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6450: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6451: split(/:/,$response);
6452: %{$codes} = (%{$codes},&str2hash($codes_str));
6453: push(@{$codetitles},&str2array($codetitles_str));
6454: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6455: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6456: $ok_response = 1;
6457: }
6458: }
6459: if ($ok_response) {
6460: return 'ok';
6461: } else {
6462: return $response;
6463: }
6464: }
6465:
6466: sub auto_instcode_defaults {
6467: my ($domain,$returnhash,$code_order) = @_;
6468: my @homeservers;
6469:
6470: my %servers = &get_servers($domain,'library');
6471: foreach my $tryserver (keys(%servers)) {
6472: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6473: push(@homeservers,$tryserver);
6474: }
6475: }
6476:
6477: my $response;
6478: foreach my $server (@homeservers) {
6479: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6480: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6481:
6482: foreach my $pair (split(/\&/,$response)) {
6483: my ($name,$value)=split(/\=/,$pair);
6484: if ($name eq 'code_order') {
6485: @{$code_order} = split(/\&/,&unescape($value));
6486: } else {
6487: $returnhash->{&unescape($name)}=&unescape($value);
6488: }
6489: }
6490: return 'ok';
6491: }
6492:
6493: return $response;
6494: }
6495:
6496: sub auto_possible_instcodes {
6497: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6498: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6499: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6500: return;
6501: }
6502: my (@homeservers,$uhome);
6503: if (defined(&domain($domain,'primary'))) {
6504: $uhome=&domain($domain,'primary');
6505: push(@homeservers,&domain($domain,'primary'));
6506: } else {
6507: my %servers = &get_servers($domain,'library');
6508: foreach my $tryserver (keys(%servers)) {
6509: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6510: push(@homeservers,$tryserver);
6511: }
6512: }
6513: }
6514: my $response;
6515: foreach my $server (@homeservers) {
6516: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6517: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6518: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6519: split(':',$response);
6520: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6521: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6522: foreach my $item (split('&',$cat_title)) {
6523: my ($name,$value)=split('=',$item);
6524: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6525: }
6526: foreach my $item (split('&',$cat_order)) {
6527: my ($name,$value)=split('=',$item);
6528: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6529: }
6530: return 'ok';
6531: }
6532: return $response;
6533: }
6534:
6535: sub auto_courserequest_checks {
6536: my ($dom) = @_;
6537: my ($homeserver,%validations);
6538: if ($dom =~ /^$match_domain$/) {
6539: $homeserver = &domain($dom,'primary');
6540: }
6541: unless ($homeserver eq 'no_host') {
6542: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6543: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6544: my @items = split(/&/,$response);
6545: foreach my $item (@items) {
6546: my ($key,$value) = split('=',$item);
6547: $validations{&unescape($key)} = &thaw_unescape($value);
6548: }
6549: }
6550: }
6551: return %validations;
6552: }
6553:
6554: sub auto_courserequest_validation {
6555: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6556: my ($homeserver,$response);
6557: if ($dom =~ /^$match_domain$/) {
6558: $homeserver = &domain($dom,'primary');
6559: }
6560: unless ($homeserver eq 'no_host') {
6561:
6562: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6563: ':'.&escape($crstype).':'.&escape($inststatuslist).
6564: ':'.&escape($instcode).':'.&escape($instseclist),
6565: $homeserver));
6566: }
6567: return $response;
6568: }
6569:
6570: sub auto_validate_class_sec {
6571: my ($cdom,$cnum,$owners,$inst_class) = @_;
6572: my $homeserver = &homeserver($cnum,$cdom);
6573: my $ownerlist;
6574: if (ref($owners) eq 'ARRAY') {
6575: $ownerlist = join(',',@{$owners});
6576: } else {
6577: $ownerlist = $owners;
6578: }
6579: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6580: &escape($ownerlist).':'.$cdom,$homeserver);
6581: return $response;
6582: }
6583:
6584: # ------------------------------------------------------- Course Group routines
6585:
6586: sub get_coursegroups {
6587: my ($cdom,$cnum,$group,$namespace) = @_;
6588: return(&dump($namespace,$cdom,$cnum,$group));
6589: }
6590:
6591: sub modify_coursegroup {
6592: my ($cdom,$cnum,$groupsettings) = @_;
6593: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6594: }
6595:
6596: sub toggle_coursegroup_status {
6597: my ($cdom,$cnum,$group,$action) = @_;
6598: my ($from_namespace,$to_namespace);
6599: if ($action eq 'delete') {
6600: $from_namespace = 'coursegroups';
6601: $to_namespace = 'deleted_groups';
6602: } else {
6603: $from_namespace = 'deleted_groups';
6604: $to_namespace = 'coursegroups';
6605: }
6606: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6607: if (my $tmp = &error(%curr_group)) {
6608: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6609: return ('read error',$tmp);
6610: } else {
6611: my %savedsettings = %curr_group;
6612: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6613: my $deloutcome;
6614: if ($result eq 'ok') {
6615: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6616: } else {
6617: return ('write error',$result);
6618: }
6619: if ($deloutcome eq 'ok') {
6620: return 'ok';
6621: } else {
6622: return ('delete error',$deloutcome);
6623: }
6624: }
6625: }
6626:
6627: sub modify_group_roles {
6628: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6629: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6630: my $role = 'gr/'.&escape($userprivs);
6631: my ($uname,$udom) = split(/:/,$user);
6632: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6633: if ($result eq 'ok') {
6634: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6635: }
6636: return $result;
6637: }
6638:
6639: sub modify_coursegroup_membership {
6640: my ($cdom,$cnum,$membership) = @_;
6641: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6642: return $result;
6643: }
6644:
6645: sub get_active_groups {
6646: my ($udom,$uname,$cdom,$cnum) = @_;
6647: my $now = time;
6648: my %groups = ();
6649: foreach my $key (keys(%env)) {
6650: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6651: my ($start,$end) = split(/\./,$env{$key});
6652: if (($end!=0) && ($end<$now)) { next; }
6653: if (($start!=0) && ($start>$now)) { next; }
6654: if ($1 eq $cdom && $2 eq $cnum) {
6655: $groups{$3} = $env{$key} ;
6656: }
6657: }
6658: }
6659: return %groups;
6660: }
6661:
6662: sub get_group_membership {
6663: my ($cdom,$cnum,$group) = @_;
6664: return(&dump('groupmembership',$cdom,$cnum,$group));
6665: }
6666:
6667: sub get_users_groups {
6668: my ($udom,$uname,$courseid) = @_;
6669: my @usersgroups;
6670: my $cachetime=1800;
6671:
6672: my $hashid="$udom:$uname:$courseid";
6673: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6674: if (defined($cached)) {
6675: @usersgroups = split(/:/,$grouplist);
6676: } else {
6677: $grouplist = '';
6678: my $courseurl = &courseid_to_courseurl($courseid);
6679: my $extra = &freeze_escape({'skipcheck' => 1});
6680: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6681: my $access_end = $env{'course.'.$courseid.
6682: '.default_enrollment_end_date'};
6683: my $now = time;
6684: foreach my $key (keys(%roleshash)) {
6685: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6686: my $group = $1;
6687: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6688: my $start = $2;
6689: my $end = $1;
6690: if ($start == -1) { next; } # deleted from group
6691: if (($start!=0) && ($start>$now)) { next; }
6692: if (($end!=0) && ($end<$now)) {
6693: if ($access_end && $access_end < $now) {
6694: if ($access_end - $end < 86400) {
6695: push(@usersgroups,$group);
6696: }
6697: }
6698: next;
6699: }
6700: push(@usersgroups,$group);
6701: }
6702: }
6703: }
6704: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6705: $grouplist = join(':',@usersgroups);
6706: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6707: }
6708: return @usersgroups;
6709: }
6710:
6711: sub devalidate_getgroups_cache {
6712: my ($udom,$uname,$cdom,$cnum)=@_;
6713: my $courseid = $cdom.'_'.$cnum;
6714:
6715: my $hashid="$udom:$uname:$courseid";
6716: &devalidate_cache_new('getgroups',$hashid);
6717: }
6718:
6719: # ------------------------------------------------------------------ Plain Text
6720:
6721: sub plaintext {
6722: my ($short,$type,$cid,$forcedefault) = @_;
6723: if ($short =~ m{^cr/}) {
6724: return (split('/',$short))[-1];
6725: }
6726: if (!defined($cid)) {
6727: $cid = $env{'request.course.id'};
6728: }
6729: my %rolenames = (
6730: Course => 'std',
6731: Community => 'alt1',
6732: );
6733: if ($cid ne '') {
6734: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6735: unless ($forcedefault) {
6736: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6737: &Apache::lonlocal::mt_escape(\$roletext);
6738: return &Apache::lonlocal::mt($roletext);
6739: }
6740: }
6741: }
6742: if ((defined($type)) && (defined($rolenames{$type})) &&
6743: (defined($rolenames{$type})) &&
6744: (defined($prp{$short}{$rolenames{$type}}))) {
6745: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6746: } elsif ($cid ne '') {
6747: my $crstype = $env{'course.'.$cid.'.type'};
6748: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6749: (defined($prp{$short}{$rolenames{$crstype}}))) {
6750: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6751: }
6752: }
6753: return &Apache::lonlocal::mt($prp{$short}{'std'});
6754: }
6755:
6756: # ----------------------------------------------------------------- Assign Role
6757:
6758: sub assignrole {
6759: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6760: $context)=@_;
6761: my $mrole;
6762: if ($role =~ /^cr\//) {
6763: my $cwosec=$url;
6764: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6765: unless (&allowed('ccr',$cwosec)) {
6766: my $refused = 1;
6767: if ($context eq 'requestcourses') {
6768: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6769: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6770: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6771: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6772: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6773: if ($crsenv{'internal.courseowner'} eq
6774: $env{'user.name'}.':'.$env{'user.domain'}) {
6775: $refused = '';
6776: }
6777: }
6778: }
6779: }
6780: }
6781: if ($refused) {
6782: &logthis('Refused custom assignrole: '.
6783: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6784: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6785: return 'refused';
6786: }
6787: }
6788: $mrole='cr';
6789: } elsif ($role =~ /^gr\//) {
6790: my $cwogrp=$url;
6791: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6792: unless (&allowed('mdg',$cwogrp)) {
6793: &logthis('Refused group assignrole: '.
6794: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6795: $env{'user.name'}.' at '.$env{'user.domain'});
6796: return 'refused';
6797: }
6798: $mrole='gr';
6799: } else {
6800: my $cwosec=$url;
6801: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6802: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6803: my $refused;
6804: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6805: if (!(&allowed('c'.$role,$url))) {
6806: $refused = 1;
6807: }
6808: } else {
6809: $refused = 1;
6810: }
6811: if ($refused) {
6812: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6813: if (!$selfenroll && $context eq 'course') {
6814: my %crsenv;
6815: if ($role eq 'cc' || $role eq 'co') {
6816: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6817: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6818: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6819: if ($crsenv{'internal.courseowner'} eq
6820: $env{'user.name'}.':'.$env{'user.domain'}) {
6821: $refused = '';
6822: }
6823: }
6824: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6825: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6826: if ($crsenv{'internal.courseowner'} eq
6827: $env{'user.name'}.':'.$env{'user.domain'}) {
6828: $refused = '';
6829: }
6830: }
6831: }
6832: }
6833: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6834: $refused = '';
6835: } elsif ($context eq 'requestcourses') {
6836: my @possroles = ('st','ta','ep','in','cc','co');
6837: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6838: my $wrongcc;
6839: if ($cnum =~ /^$match_community$/) {
6840: $wrongcc = 1 if ($role eq 'cc');
6841: } else {
6842: $wrongcc = 1 if ($role eq 'co');
6843: }
6844: unless ($wrongcc) {
6845: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6846: if ($crsenv{'internal.courseowner'} eq
6847: $env{'user.name'}.':'.$env{'user.domain'}) {
6848: $refused = '';
6849: }
6850: }
6851: }
6852: }
6853: if ($refused) {
6854: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6855: ' '.$role.' '.$end.' '.$start.' by '.
6856: $env{'user.name'}.' at '.$env{'user.domain'});
6857: return 'refused';
6858: }
6859: }
6860: }
6861: $mrole=$role;
6862: }
6863: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6864: "$udom:$uname:$url".'_'."$mrole=$role";
6865: if ($end) { $command.='_'.$end; }
6866: if ($start) {
6867: if ($end) {
6868: $command.='_'.$start;
6869: } else {
6870: $command.='_0_'.$start;
6871: }
6872: }
6873: my $origstart = $start;
6874: my $origend = $end;
6875: my $delflag;
6876: # actually delete
6877: if ($deleteflag) {
6878: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6879: # modify command to delete the role
6880: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6881: "$udom:$uname:$url".'_'."$mrole";
6882: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6883: # set start and finish to negative values for userrolelog
6884: $start=-1;
6885: $end=-1;
6886: $delflag = 1;
6887: }
6888: }
6889: # send command
6890: my $answer=&reply($command,&homeserver($uname,$udom));
6891: # log new user role if status is ok
6892: if ($answer eq 'ok') {
6893: &userrolelog($role,$uname,$udom,$url,$start,$end);
6894: # for course roles, perform group memberships changes triggered by role change.
6895: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6896: unless ($role =~ /^gr/) {
6897: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6898: $origstart,$selfenroll,$context);
6899: }
6900: if ($role eq 'cc') {
6901: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6902: }
6903: }
6904: return $answer;
6905: }
6906:
6907: sub autoupdate_coowners {
6908: my ($url,$end,$start,$uname,$udom) = @_;
6909: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6910: if (($cdom ne '') && ($cnum ne '')) {
6911: my $now = time;
6912: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6913: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6914: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6915: my $instcode = $coursehash{'internal.coursecode'};
6916: if ($instcode ne '') {
6917: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6918: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6919: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6920: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6921: if ($result eq 'valid') {
6922: if ($coursehash{'internal.co-owners'}) {
6923: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6924: push(@newcoowners,$coowner);
6925: }
6926: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6927: push(@newcoowners,$uname.':'.$udom);
6928: }
6929: @newcoowners = sort(@newcoowners);
6930: } else {
6931: push(@newcoowners,$uname.':'.$udom);
6932: }
6933: } else {
6934: if ($coursehash{'internal.co-owners'}) {
6935: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6936: unless ($coowner eq $uname.':'.$udom) {
6937: push(@newcoowners,$coowner);
6938: }
6939: }
6940: unless (@newcoowners > 0) {
6941: $delcoowners = 1;
6942: $coowners = '';
6943: }
6944: }
6945: }
6946: if (@newcoowners || $delcoowners) {
6947: &store_coowners($cdom,$cnum,$coursehash{'home'},
6948: $delcoowners,@newcoowners);
6949: }
6950: }
6951: }
6952: }
6953: }
6954: }
6955: }
6956:
6957: sub store_coowners {
6958: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6959: my $cid = $cdom.'_'.$cnum;
6960: my ($coowners,$delresult,$putresult);
6961: if (@newcoowners) {
6962: $coowners = join(',',@newcoowners);
6963: my %coownershash = (
6964: 'internal.co-owners' => $coowners,
6965: );
6966: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6967: if ($putresult eq 'ok') {
6968: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6969: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6970: }
6971: }
6972: }
6973: if ($delcoowners) {
6974: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6975: if ($delresult eq 'ok') {
6976: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6977: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6978: }
6979: }
6980: }
6981: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6982: my %crsinfo =
6983: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6984: if (ref($crsinfo{$cid}) eq 'HASH') {
6985: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6986: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6987: }
6988: }
6989: }
6990:
6991: # -------------------------------------------------- Modify user authentication
6992: # Overrides without validation
6993:
6994: sub modifyuserauth {
6995: my ($udom,$uname,$umode,$upass)=@_;
6996: my $uhome=&homeserver($uname,$udom);
6997: unless (&allowed('mau',$udom)) { return 'refused'; }
6998: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6999: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7000: ' in domain '.$env{'request.role.domain'});
7001: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7002: &escape($upass),$uhome);
7003: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7004: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7005: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7006: &log($udom,,$uname,$uhome,
7007: 'Authentication changed by '.$env{'user.domain'}.', '.
7008: $env{'user.name'}.', '.$umode.
7009: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7010: unless ($reply eq 'ok') {
7011: &logthis('Authentication mode error: '.$reply);
7012: return 'error: '.$reply;
7013: }
7014: return 'ok';
7015: }
7016:
7017: # --------------------------------------------------------------- Modify a user
7018:
7019: sub modifyuser {
7020: my ($udom, $uname, $uid,
7021: $umode, $upass, $first,
7022: $middle, $last, $gene,
7023: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7024: $udom= &LONCAPA::clean_domain($udom);
7025: $uname=&LONCAPA::clean_username($uname);
7026: my $showcandelete = 'none';
7027: if (ref($candelete) eq 'ARRAY') {
7028: if (@{$candelete} > 0) {
7029: $showcandelete = join(', ',@{$candelete});
7030: }
7031: }
7032: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7033: $umode.', '.$first.', '.$middle.', '.
7034: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7035: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7036: ' desiredhome not specified').
7037: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7038: ' in domain '.$env{'request.role.domain'});
7039: my $uhome=&homeserver($uname,$udom,'true');
7040: my $newuser;
7041: if ($uhome eq 'no_host') {
7042: $newuser = 1;
7043: }
7044: # ----------------------------------------------------------------- Create User
7045: if (($uhome eq 'no_host') &&
7046: (($umode && $upass) || ($umode eq 'localauth'))) {
7047: my $unhome='';
7048: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7049: $unhome = $desiredhome;
7050: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7051: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7052: } else { # load balancing routine for determining $unhome
7053: my $loadm=10000000;
7054: my %servers = &get_servers($udom,'library');
7055: foreach my $tryserver (keys(%servers)) {
7056: my $answer=reply('load',$tryserver);
7057: if (($answer=~/\d+/) && ($answer<$loadm)) {
7058: $loadm=$answer;
7059: $unhome=$tryserver;
7060: }
7061: }
7062: }
7063: if (($unhome eq '') || ($unhome eq 'no_host')) {
7064: return 'error: unable to find a home server for '.$uname.
7065: ' in domain '.$udom;
7066: }
7067: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7068: &escape($upass),$unhome);
7069: unless ($reply eq 'ok') {
7070: return 'error: '.$reply;
7071: }
7072: $uhome=&homeserver($uname,$udom,'true');
7073: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7074: return 'error: unable verify users home machine.';
7075: }
7076: } # End of creation of new user
7077: # ---------------------------------------------------------------------- Add ID
7078: if ($uid) {
7079: $uid=~tr/A-Z/a-z/;
7080: my %uidhash=&idrget($udom,$uname);
7081: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7082: && (!$forceid)) {
7083: unless ($uid eq $uidhash{$uname}) {
7084: return 'error: user id "'.$uid.'" does not match '.
7085: 'current user id "'.$uidhash{$uname}.'".';
7086: }
7087: } else {
7088: &idput($udom,($uname => $uid));
7089: }
7090: }
7091: # -------------------------------------------------------------- Add names, etc
7092: my @tmp=&get('environment',
7093: ['firstname','middlename','lastname','generation','id',
7094: 'permanentemail','inststatus'],
7095: $udom,$uname);
7096: my (%names,%oldnames);
7097: if ($tmp[0] =~ m/^error:.*/) {
7098: %names=();
7099: } else {
7100: %names = @tmp;
7101: %oldnames = %names;
7102: }
7103: #
7104: # If name, email and/or uid are blank (e.g., because an uploaded file
7105: # of users did not contain them), do not overwrite existing values
7106: # unless field is in $candelete array ref.
7107: #
7108:
7109: my @fields = ('firstname','middlename','lastname','generation',
7110: 'permanentemail','id');
7111: my %newvalues;
7112: if (ref($candelete) eq 'ARRAY') {
7113: foreach my $field (@fields) {
7114: if (grep(/^\Q$field\E$/,@{$candelete})) {
7115: if ($field eq 'firstname') {
7116: $names{$field} = $first;
7117: } elsif ($field eq 'middlename') {
7118: $names{$field} = $middle;
7119: } elsif ($field eq 'lastname') {
7120: $names{$field} = $last;
7121: } elsif ($field eq 'generation') {
7122: $names{$field} = $gene;
7123: } elsif ($field eq 'permanentemail') {
7124: $names{$field} = $email;
7125: } elsif ($field eq 'id') {
7126: $names{$field} = $uid;
7127: }
7128: }
7129: }
7130: }
7131: if ($first) { $names{'firstname'} = $first; }
7132: if (defined($middle)) { $names{'middlename'} = $middle; }
7133: if ($last) { $names{'lastname'} = $last; }
7134: if (defined($gene)) { $names{'generation'} = $gene; }
7135: if ($email) {
7136: $email=~s/[^\w\@\.\-\,]//gs;
7137: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7138: }
7139: if ($uid) { $names{'id'} = $uid; }
7140: if (defined($inststatus)) {
7141: $names{'inststatus'} = '';
7142: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7143: if (ref($usertypes) eq 'HASH') {
7144: my @okstatuses;
7145: foreach my $item (split(/:/,$inststatus)) {
7146: if (defined($usertypes->{$item})) {
7147: push(@okstatuses,$item);
7148: }
7149: }
7150: if (@okstatuses) {
7151: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7152: }
7153: }
7154: }
7155: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7156: $umode.', '.$first.', '.$middle.', '.
7157: $last.', '.$gene.', '.$email.', '.$inststatus;
7158: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7159: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7160: } else {
7161: $logmsg .= ' during self creation';
7162: }
7163: my $changed;
7164: if ($newuser) {
7165: $changed = 1;
7166: } else {
7167: foreach my $field (@fields) {
7168: if ($names{$field} ne $oldnames{$field}) {
7169: $changed = 1;
7170: last;
7171: }
7172: }
7173: }
7174: unless ($changed) {
7175: $logmsg = 'No changes in user information needed for: '.$logmsg;
7176: &logthis($logmsg);
7177: return 'ok';
7178: }
7179: my $reply = &put('environment', \%names, $udom,$uname);
7180: if ($reply ne 'ok') {
7181: return 'error: '.$reply;
7182: }
7183: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7184: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7185: }
7186: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7187: &devalidate_cache_new('namescache',$uname.':'.$udom);
7188: $logmsg = 'Success modifying user '.$logmsg;
7189: &logthis($logmsg);
7190: return 'ok';
7191: }
7192:
7193: # -------------------------------------------------------------- Modify student
7194:
7195: sub modifystudent {
7196: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7197: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7198: $selfenroll,$context,$inststatus)=@_;
7199: if (!$cid) {
7200: unless ($cid=$env{'request.course.id'}) {
7201: return 'not_in_class';
7202: }
7203: }
7204: # --------------------------------------------------------------- Make the user
7205: my $reply=&modifyuser
7206: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7207: $desiredhome,$email,$inststatus);
7208: unless ($reply eq 'ok') { return $reply; }
7209: # This will cause &modify_student_enrollment to get the uid from the
7210: # students environment
7211: $uid = undef if (!$forceid);
7212: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7213: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7214: return $reply;
7215: }
7216:
7217: sub modify_student_enrollment {
7218: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7219: my ($cdom,$cnum,$chome);
7220: if (!$cid) {
7221: unless ($cid=$env{'request.course.id'}) {
7222: return 'not_in_class';
7223: }
7224: $cdom=$env{'course.'.$cid.'.domain'};
7225: $cnum=$env{'course.'.$cid.'.num'};
7226: } else {
7227: ($cdom,$cnum)=split(/_/,$cid);
7228: }
7229: $chome=$env{'course.'.$cid.'.home'};
7230: if (!$chome) {
7231: $chome=&homeserver($cnum,$cdom);
7232: }
7233: if (!$chome) { return 'unknown_course'; }
7234: # Make sure the user exists
7235: my $uhome=&homeserver($uname,$udom);
7236: if (($uhome eq '') || ($uhome eq 'no_host')) {
7237: return 'error: no such user';
7238: }
7239: # Get student data if we were not given enough information
7240: if (!defined($first) || $first eq '' ||
7241: !defined($last) || $last eq '' ||
7242: !defined($uid) || $uid eq '' ||
7243: !defined($middle) || $middle eq '' ||
7244: !defined($gene) || $gene eq '') {
7245: # They did not supply us with enough data to enroll the student, so
7246: # we need to pick up more information.
7247: my %tmp = &get('environment',
7248: ['firstname','middlename','lastname', 'generation','id']
7249: ,$udom,$uname);
7250:
7251: #foreach my $key (keys(%tmp)) {
7252: # &logthis("key $key = ".$tmp{$key});
7253: #}
7254: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7255: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7256: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7257: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7258: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7259: }
7260: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7261: my $reply=cput('classlist',
7262: {"$uname:$udom" =>
7263: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7264: $cdom,$cnum);
7265: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
7266: return 'error: '.$reply;
7267: } else {
7268: &devalidate_getsection_cache($udom,$uname,$cid);
7269: }
7270: # Add student role to user
7271: my $uurl='/'.$cid;
7272: $uurl=~s/\_/\//g;
7273: if ($usec) {
7274: $uurl.='/'.$usec;
7275: }
7276: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7277: }
7278:
7279: sub format_name {
7280: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7281: my $name;
7282: if ($first ne 'lastname') {
7283: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7284: } else {
7285: if ($lastname=~/\S/) {
7286: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7287: $name=~s/\s+,/,/;
7288: } else {
7289: $name.= $firstname.' '.$middlename.' '.$generation;
7290: }
7291: }
7292: $name=~s/^\s+//;
7293: $name=~s/\s+$//;
7294: $name=~s/\s+/ /g;
7295: return $name;
7296: }
7297:
7298: # ------------------------------------------------- Write to course preferences
7299:
7300: sub writecoursepref {
7301: my ($courseid,%prefs)=@_;
7302: $courseid=~s/^\///;
7303: $courseid=~s/\_/\//g;
7304: my ($cdomain,$cnum)=split(/\//,$courseid);
7305: my $chome=homeserver($cnum,$cdomain);
7306: if (($chome eq '') || ($chome eq 'no_host')) {
7307: return 'error: no such course';
7308: }
7309: my $cstring='';
7310: foreach my $pref (keys(%prefs)) {
7311: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7312: }
7313: $cstring=~s/\&$//;
7314: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7315: }
7316:
7317: # ---------------------------------------------------------- Make/modify course
7318:
7319: sub createcourse {
7320: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7321: $course_owner,$crstype,$cnum,$context,$category)=@_;
7322: $url=&declutter($url);
7323: my $cid='';
7324: if ($context eq 'requestcourses') {
7325: my $can_create = 0;
7326: my ($ownername,$ownerdom) = split(':',$course_owner);
7327: if ($udom eq $ownerdom) {
7328: if (&usertools_access($ownername,$ownerdom,$category,undef,
7329: $context)) {
7330: $can_create = 1;
7331: }
7332: } else {
7333: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7334: $category);
7335: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7336: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7337: if (@curr > 0) {
7338: my @options = qw(approval validate autolimit);
7339: my $optregex = join('|',@options);
7340: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7341: $can_create = 1;
7342: }
7343: }
7344: }
7345: }
7346: if ($can_create) {
7347: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7348: unless (&allowed('ccc',$udom)) {
7349: return 'refused';
7350: }
7351: }
7352: } else {
7353: return 'refused';
7354: }
7355: } elsif (!&allowed('ccc',$udom)) {
7356: return 'refused';
7357: }
7358: # --------------------------------------------------------------- Get Unique ID
7359: my $uname;
7360: if ($cnum =~ /^$match_courseid$/) {
7361: my $chome=&homeserver($cnum,$udom,'true');
7362: if (($chome eq '') || ($chome eq 'no_host')) {
7363: $uname = $cnum;
7364: } else {
7365: $uname = &generate_coursenum($udom,$crstype);
7366: }
7367: } else {
7368: $uname = &generate_coursenum($udom,$crstype);
7369: }
7370: return $uname if ($uname =~ /^error/);
7371: # -------------------------------------------------- Check supplied server name
7372: if (!defined($course_server)) {
7373: if (defined(&domain($udom,'primary'))) {
7374: $course_server = &domain($udom,'primary');
7375: } else {
7376: $course_server = $env{'user.home'};
7377: }
7378: }
7379: my %host_servers =
7380: &Apache::lonnet::get_servers($udom,'library');
7381: unless ($host_servers{$course_server}) {
7382: return 'error: invalid home server for course: '.$course_server;
7383: }
7384: # ------------------------------------------------------------- Make the course
7385: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7386: $course_server);
7387: unless ($reply eq 'ok') { return 'error: '.$reply; }
7388: my $uhome=&homeserver($uname,$udom,'true');
7389: if (($uhome eq '') || ($uhome eq 'no_host')) {
7390: return 'error: no such course';
7391: }
7392: # ----------------------------------------------------------------- Course made
7393: # log existence
7394: my $now = time;
7395: my $newcourse = {
7396: $udom.'_'.$uname => {
7397: description => $description,
7398: inst_code => $inst_code,
7399: owner => $course_owner,
7400: type => $crstype,
7401: creator => $env{'user.name'}.':'.
7402: $env{'user.domain'},
7403: created => $now,
7404: context => $context,
7405: },
7406: };
7407: &courseidput($udom,$newcourse,$uhome,'notime');
7408: # set toplevel url
7409: my $topurl=$url;
7410: unless ($nonstandard) {
7411: # ------------------------------------------ For standard courses, make top url
7412: my $mapurl=&clutter($url);
7413: if ($mapurl eq '/res/') { $mapurl=''; }
7414: $env{'form.initmap'}=(<<ENDINITMAP);
7415: <map>
7416: <resource id="1" type="start"></resource>
7417: <resource id="2" src="$mapurl"></resource>
7418: <resource id="3" type="finish"></resource>
7419: <link index="1" from="1" to="2"></link>
7420: <link index="2" from="2" to="3"></link>
7421: </map>
7422: ENDINITMAP
7423: $topurl=&declutter(
7424: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7425: );
7426: }
7427: # ----------------------------------------------------------- Write preferences
7428: &writecoursepref($udom.'_'.$uname,
7429: ('description' => $description,
7430: 'url' => $topurl,
7431: 'internal.creator' => $env{'user.name'}.':'.
7432: $env{'user.domain'},
7433: 'internal.created' => $now,
7434: 'internal.creationcontext' => $context)
7435: );
7436: return '/'.$udom.'/'.$uname;
7437: }
7438:
7439: # ------------------------------------------------------------------- Create ID
7440: sub generate_coursenum {
7441: my ($udom,$crstype) = @_;
7442: my $domdesc = &domain($udom);
7443: return 'error: invalid domain' if ($domdesc eq '');
7444: my $first;
7445: if ($crstype eq 'Community') {
7446: $first = '0';
7447: } else {
7448: $first = int(1+rand(9));
7449: }
7450: my $uname=$first.
7451: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7452: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7453: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7454: # ----------------------------------------------- Make sure that does not exist
7455: my $uhome=&homeserver($uname,$udom,'true');
7456: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7457: if ($crstype eq 'Community') {
7458: $first = '0';
7459: } else {
7460: $first = int(1+rand(9));
7461: }
7462: $uname=$first.
7463: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7464: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7465: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7466: $uhome=&homeserver($uname,$udom,'true');
7467: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7468: return 'error: unable to generate unique course-ID';
7469: }
7470: }
7471: return $uname;
7472: }
7473:
7474: sub is_course {
7475: my ($cdom,$cnum) = @_;
7476: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7477: undef,'.');
7478: if (exists($courses{$cdom.'_'.$cnum})) {
7479: return 1;
7480: }
7481: return 0;
7482: }
7483:
7484: sub store_userdata {
7485: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7486: my $result;
7487: if ($datakey ne '') {
7488: if (ref($storehash) eq 'HASH') {
7489: if ($udom eq '' || $uname eq '') {
7490: $udom = $env{'user.domain'};
7491: $uname = $env{'user.name'};
7492: }
7493: my $uhome=&homeserver($uname,$udom);
7494: if (($uhome eq '') || ($uhome eq 'no_host')) {
7495: $result = 'error: no_host';
7496: } else {
7497: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7498: $storehash->{'host'} = $perlvar{'lonHostID'};
7499:
7500: my $namevalue='';
7501: foreach my $key (keys(%{$storehash})) {
7502: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7503: }
7504: $namevalue=~s/\&$//;
7505: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
7506: $namevalue,$uhome);
7507: }
7508: } else {
7509: $result = 'error: data to store was not a hash reference';
7510: }
7511: } else {
7512: $result= 'error: invalid requestkey';
7513: }
7514: return $result;
7515: }
7516:
7517: # ---------------------------------------------------------- Assign Custom Role
7518:
7519: sub assigncustomrole {
7520: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7521: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7522: $end,$start,$deleteflag,$selfenroll,$context);
7523: }
7524:
7525: # ----------------------------------------------------------------- Revoke Role
7526:
7527: sub revokerole {
7528: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7529: my $now=time;
7530: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7531: }
7532:
7533: # ---------------------------------------------------------- Revoke Custom Role
7534:
7535: sub revokecustomrole {
7536: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7537: my $now=time;
7538: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7539: $deleteflag,$selfenroll,$context);
7540: }
7541:
7542: # ------------------------------------------------------------ Disk usage
7543: sub diskusage {
7544: my ($udom,$uname,$directorypath,$getpropath)=@_;
7545: $directorypath =~ s/\/$//;
7546: my $listing=&reply('du2:'.&escape($directorypath).':'
7547: .&escape($getpropath).':'.&escape($uname).':'
7548: .&escape($udom),homeserver($uname,$udom));
7549: if ($listing eq 'unknown_cmd') {
7550: if ($getpropath) {
7551: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7552: }
7553: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7554: }
7555: return $listing;
7556: }
7557:
7558: sub is_locked {
7559: my ($file_name, $domain, $user, $which) = @_;
7560: my @check;
7561: my $is_locked;
7562: push (@check,$file_name);
7563: my %locked = &get('file_permissions',\@check,
7564: $env{'user.domain'},$env{'user.name'});
7565: my ($tmp)=keys(%locked);
7566: if ($tmp=~/^error:/) { undef(%locked); }
7567:
7568: if (ref($locked{$file_name}) eq 'ARRAY') {
7569: $is_locked = 'false';
7570: foreach my $entry (@{$locked{$file_name}}) {
7571: if (ref($entry) eq 'ARRAY') {
7572: $is_locked = 'true';
7573: if (ref($which) eq 'ARRAY') {
7574: push(@{$which},$entry);
7575: } else {
7576: last;
7577: }
7578: }
7579: }
7580: } else {
7581: $is_locked = 'false';
7582: }
7583: return $is_locked;
7584: }
7585:
7586: sub declutter_portfile {
7587: my ($file) = @_;
7588: $file =~ s{^(/portfolio/|portfolio/)}{/};
7589: return $file;
7590: }
7591:
7592: # ------------------------------------------------------------- Mark as Read Only
7593:
7594: sub mark_as_readonly {
7595: my ($domain,$user,$files,$what) = @_;
7596: my %current_permissions = &dump('file_permissions',$domain,$user);
7597: my ($tmp)=keys(%current_permissions);
7598: if ($tmp=~/^error:/) { undef(%current_permissions); }
7599: foreach my $file (@{$files}) {
7600: $file = &declutter_portfile($file);
7601: push(@{$current_permissions{$file}},$what);
7602: }
7603: &put('file_permissions',\%current_permissions,$domain,$user);
7604: return;
7605: }
7606:
7607: # ------------------------------------------------------------Save Selected Files
7608:
7609: sub save_selected_files {
7610: my ($user, $path, @files) = @_;
7611: my $filename = $user."savedfiles";
7612: my @other_files = &files_not_in_path($user, $path);
7613: open (OUT, '>'.$tmpdir.$filename);
7614: foreach my $file (@files) {
7615: print (OUT $env{'form.currentpath'}.$file."\n");
7616: }
7617: foreach my $file (@other_files) {
7618: print (OUT $file."\n");
7619: }
7620: close (OUT);
7621: return 'ok';
7622: }
7623:
7624: sub clear_selected_files {
7625: my ($user) = @_;
7626: my $filename = $user."savedfiles";
7627: open (OUT, '>'.LONCAPA::tempdir().$filename);
7628: print (OUT undef);
7629: close (OUT);
7630: return ("ok");
7631: }
7632:
7633: sub files_in_path {
7634: my ($user, $path) = @_;
7635: my $filename = $user."savedfiles";
7636: my %return_files;
7637: open (IN, '<'.LONCAPA::tempdir().$filename);
7638: while (my $line_in = <IN>) {
7639: chomp ($line_in);
7640: my @paths_and_file = split (m!/!, $line_in);
7641: my $file_part = pop (@paths_and_file);
7642: my $path_part = join ('/', @paths_and_file);
7643: $path_part.='/';
7644: my $path_and_file = $path_part.$file_part;
7645: if ($path_part eq $path) {
7646: $return_files{$file_part}= 'selected';
7647: }
7648: }
7649: close (IN);
7650: return (\%return_files);
7651: }
7652:
7653: # called in portfolio select mode, to show files selected NOT in current directory
7654: sub files_not_in_path {
7655: my ($user, $path) = @_;
7656: my $filename = $user."savedfiles";
7657: my @return_files;
7658: my $path_part;
7659: open(IN, '<'.LONCAPA::.$filename);
7660: while (my $line = <IN>) {
7661: #ok, I know it's clunky, but I want it to work
7662: my @paths_and_file = split(m|/|, $line);
7663: my $file_part = pop(@paths_and_file);
7664: chomp($file_part);
7665: my $path_part = join('/', @paths_and_file);
7666: $path_part .= '/';
7667: my $path_and_file = $path_part.$file_part;
7668: if ($path_part ne $path) {
7669: push(@return_files, ($path_and_file));
7670: }
7671: }
7672: close(OUT);
7673: return (@return_files);
7674: }
7675:
7676: #----------------------------------------------Get portfolio file permissions
7677:
7678: sub get_portfile_permissions {
7679: my ($domain,$user) = @_;
7680: my %current_permissions = &dump('file_permissions',$domain,$user);
7681: my ($tmp)=keys(%current_permissions);
7682: if ($tmp=~/^error:/) { undef(%current_permissions); }
7683: return \%current_permissions;
7684: }
7685:
7686: #---------------------------------------------Get portfolio file access controls
7687:
7688: sub get_access_controls {
7689: my ($current_permissions,$group,$file) = @_;
7690: my %access;
7691: my $real_file = $file;
7692: $file =~ s/\.meta$//;
7693: if (defined($file)) {
7694: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7695: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7696: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7697: }
7698: }
7699: } else {
7700: foreach my $key (keys(%{$current_permissions})) {
7701: if ($key =~ /\0accesscontrol$/) {
7702: if (defined($group)) {
7703: if ($key !~ m-^\Q$group\E/-) {
7704: next;
7705: }
7706: }
7707: my ($fullpath) = split(/\0/,$key);
7708: if (ref($$current_permissions{$key}) eq 'HASH') {
7709: foreach my $control (keys(%{$$current_permissions{$key}})) {
7710: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7711: }
7712: }
7713: }
7714: }
7715: }
7716: return %access;
7717: }
7718:
7719: sub modify_access_controls {
7720: my ($file_name,$changes,$domain,$user)=@_;
7721: my ($outcome,$deloutcome);
7722: my %store_permissions;
7723: my %new_values;
7724: my %new_control;
7725: my %translation;
7726: my @deletions = ();
7727: my $now = time;
7728: if (exists($$changes{'activate'})) {
7729: if (ref($$changes{'activate'}) eq 'HASH') {
7730: my @newitems = sort(keys(%{$$changes{'activate'}}));
7731: my $numnew = scalar(@newitems);
7732: for (my $i=0; $i<$numnew; $i++) {
7733: my $newkey = $newitems[$i];
7734: my $newid = &Apache::loncommon::get_cgi_id();
7735: if ($newkey =~ /^\d+:/) {
7736: $newkey =~ s/^(\d+)/$newid/;
7737: $translation{$1} = $newid;
7738: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7739: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7740: $translation{$1} = $newid;
7741: }
7742: $new_values{$file_name."\0".$newkey} =
7743: $$changes{'activate'}{$newitems[$i]};
7744: $new_control{$newkey} = $now;
7745: }
7746: }
7747: }
7748: my %todelete;
7749: my %changed_items;
7750: foreach my $action ('delete','update') {
7751: if (exists($$changes{$action})) {
7752: if (ref($$changes{$action}) eq 'HASH') {
7753: foreach my $key (keys(%{$$changes{$action}})) {
7754: my ($itemnum) = ($key =~ /^([^:]+):/);
7755: if ($action eq 'delete') {
7756: $todelete{$itemnum} = 1;
7757: } else {
7758: $changed_items{$itemnum} = $key;
7759: }
7760: }
7761: }
7762: }
7763: }
7764: # get lock on access controls for file.
7765: my $lockhash = {
7766: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7767: ':'.$env{'user.domain'},
7768: };
7769: my $tries = 0;
7770: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7771:
7772: while (($gotlock ne 'ok') && $tries <3) {
7773: $tries ++;
7774: sleep 1;
7775: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7776: }
7777: if ($gotlock eq 'ok') {
7778: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7779: my ($tmp)=keys(%curr_permissions);
7780: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7781: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7782: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7783: if (ref($curr_controls) eq 'HASH') {
7784: foreach my $control_item (keys(%{$curr_controls})) {
7785: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7786: if (defined($todelete{$itemnum})) {
7787: push(@deletions,$file_name."\0".$control_item);
7788: } else {
7789: if (defined($changed_items{$itemnum})) {
7790: $new_control{$changed_items{$itemnum}} = $now;
7791: push(@deletions,$file_name."\0".$control_item);
7792: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7793: } else {
7794: $new_control{$control_item} = $$curr_controls{$control_item};
7795: }
7796: }
7797: }
7798: }
7799: }
7800: my ($group);
7801: if (&is_course($domain,$user)) {
7802: ($group,my $file) = split(/\//,$file_name,2);
7803: }
7804: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7805: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7806: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7807: # remove lock
7808: my @del_lock = ($file_name."\0".'locked_access_records');
7809: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7810: my $sqlresult =
7811: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7812: $group);
7813: } else {
7814: $outcome = "error: could not obtain lockfile\n";
7815: }
7816: return ($outcome,$deloutcome,\%new_values,\%translation);
7817: }
7818:
7819: sub make_public_indefinitely {
7820: my ($requrl) = @_;
7821: my $now = time;
7822: my $action = 'activate';
7823: my $aclnum = 0;
7824: if (&is_portfolio_url($requrl)) {
7825: my (undef,$udom,$unum,$file_name,$group) =
7826: &parse_portfolio_url($requrl);
7827: my $current_perms = &get_portfile_permissions($udom,$unum);
7828: my %access_controls = &get_access_controls($current_perms,
7829: $group,$file_name);
7830: foreach my $key (keys(%{$access_controls{$file_name}})) {
7831: my ($num,$scope,$end,$start) =
7832: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7833: if ($scope eq 'public') {
7834: if ($start <= $now && $end == 0) {
7835: $action = 'none';
7836: } else {
7837: $action = 'update';
7838: $aclnum = $num;
7839: }
7840: last;
7841: }
7842: }
7843: if ($action eq 'none') {
7844: return 'ok';
7845: } else {
7846: my %changes;
7847: my $newend = 0;
7848: my $newstart = $now;
7849: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7850: $changes{$action}{$newkey} = {
7851: type => 'public',
7852: time => {
7853: start => $newstart,
7854: end => $newend,
7855: },
7856: };
7857: my ($outcome,$deloutcome,$new_values,$translation) =
7858: &modify_access_controls($file_name,\%changes,$udom,$unum);
7859: return $outcome;
7860: }
7861: } else {
7862: return 'invalid';
7863: }
7864: }
7865:
7866: #------------------------------------------------------Get Marked as Read Only
7867:
7868: sub get_marked_as_readonly {
7869: my ($domain,$user,$what,$group) = @_;
7870: my $current_permissions = &get_portfile_permissions($domain,$user);
7871: my @readonly_files;
7872: my $cmp1=$what;
7873: if (ref($what)) { $cmp1=join('',@{$what}) };
7874: while (my ($file_name,$value) = each(%{$current_permissions})) {
7875: if (defined($group)) {
7876: if ($file_name !~ m-^\Q$group\E/-) {
7877: next;
7878: }
7879: }
7880: if (ref($value) eq "ARRAY"){
7881: foreach my $stored_what (@{$value}) {
7882: my $cmp2=$stored_what;
7883: if (ref($stored_what) eq 'ARRAY') {
7884: $cmp2=join('',@{$stored_what});
7885: }
7886: if ($cmp1 eq $cmp2) {
7887: push(@readonly_files, $file_name);
7888: last;
7889: } elsif (!defined($what)) {
7890: push(@readonly_files, $file_name);
7891: last;
7892: }
7893: }
7894: }
7895: }
7896: return @readonly_files;
7897: }
7898: #-----------------------------------------------------------Get Marked as Read Only Hash
7899:
7900: sub get_marked_as_readonly_hash {
7901: my ($current_permissions,$group,$what) = @_;
7902: my %readonly_files;
7903: while (my ($file_name,$value) = each(%{$current_permissions})) {
7904: if (defined($group)) {
7905: if ($file_name !~ m-^\Q$group\E/-) {
7906: next;
7907: }
7908: }
7909: if (ref($value) eq "ARRAY"){
7910: foreach my $stored_what (@{$value}) {
7911: if (ref($stored_what) eq 'ARRAY') {
7912: foreach my $lock_descriptor(@{$stored_what}) {
7913: if ($lock_descriptor eq 'graded') {
7914: $readonly_files{$file_name} = 'graded';
7915: } elsif ($lock_descriptor eq 'handback') {
7916: $readonly_files{$file_name} = 'handback';
7917: } else {
7918: if (!exists($readonly_files{$file_name})) {
7919: $readonly_files{$file_name} = 'locked';
7920: }
7921: }
7922: }
7923: }
7924: }
7925: }
7926: }
7927: return %readonly_files;
7928: }
7929: # ------------------------------------------------------------ Unmark as Read Only
7930:
7931: sub unmark_as_readonly {
7932: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7933: # for portfolio submissions, $what contains [$symb,$crsid]
7934: my ($domain,$user,$what,$file_name,$group) = @_;
7935: $file_name = &declutter_portfile($file_name);
7936: my $symb_crs = $what;
7937: if (ref($what)) { $symb_crs=join('',@$what); }
7938: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7939: my ($tmp)=keys(%current_permissions);
7940: if ($tmp=~/^error:/) { undef(%current_permissions); }
7941: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7942: foreach my $file (@readonly_files) {
7943: my $clean_file = &declutter_portfile($file);
7944: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7945: my $current_locks = $current_permissions{$file};
7946: my @new_locks;
7947: my @del_keys;
7948: if (ref($current_locks) eq "ARRAY"){
7949: foreach my $locker (@{$current_locks}) {
7950: my $compare=$locker;
7951: if (ref($locker) eq 'ARRAY') {
7952: $compare=join('',@{$locker});
7953: if ($compare ne $symb_crs) {
7954: push(@new_locks, $locker);
7955: }
7956: }
7957: }
7958: if (scalar(@new_locks) > 0) {
7959: $current_permissions{$file} = \@new_locks;
7960: } else {
7961: push(@del_keys, $file);
7962: &del('file_permissions',\@del_keys, $domain, $user);
7963: delete($current_permissions{$file});
7964: }
7965: }
7966: }
7967: &put('file_permissions',\%current_permissions,$domain,$user);
7968: return;
7969: }
7970:
7971: # ------------------------------------------------------------ Directory lister
7972:
7973: sub dirlist {
7974: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7975: $uri=~s/^\///;
7976: $uri=~s/\/$//;
7977: my ($udom, $uname);
7978: if ($getuserdir) {
7979: $udom = $userdomain;
7980: $uname = $username;
7981: } else {
7982: (undef,$udom,$uname)=split(/\//,$uri);
7983: if(defined($userdomain)) {
7984: $udom = $userdomain;
7985: }
7986: if(defined($username)) {
7987: $uname = $username;
7988: }
7989: }
7990: my ($dirRoot,$listing,@listing_results);
7991:
7992: $dirRoot = $perlvar{'lonDocRoot'};
7993: if (defined($getpropath)) {
7994: $dirRoot = &propath($udom,$uname);
7995: $dirRoot =~ s/\/$//;
7996: } elsif (defined($getuserdir)) {
7997: my $subdir=$uname.'__';
7998: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7999: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8000: ."/$udom/$subdir/$uname";
8001: } elsif (defined($alternateRoot)) {
8002: $dirRoot = $alternateRoot;
8003: }
8004:
8005: if($udom) {
8006: if($uname) {
8007: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8008: .$getuserdir.':'.&escape($dirRoot)
8009: .':'.&escape($uname).':'.&escape($udom),
8010: &homeserver($uname,$udom));
8011: if ($listing eq 'unknown_cmd') {
8012: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
8013: &homeserver($uname,$udom));
8014: } else {
8015: @listing_results = map { &unescape($_); } split(/:/,$listing);
8016: }
8017: if ($listing eq 'unknown_cmd') {
8018: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
8019: &homeserver($uname,$udom));
8020: @listing_results = split(/:/,$listing);
8021: } else {
8022: @listing_results = map { &unescape($_); } split(/:/,$listing);
8023: }
8024: return @listing_results;
8025: } elsif(!$alternateRoot) {
8026: my %allusers;
8027: my %servers = &get_servers($udom,'library');
8028: foreach my $tryserver (keys(%servers)) {
8029: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8030: &escape($udom),$tryserver);
8031: if ($listing eq 'unknown_cmd') {
8032: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8033: $udom, $tryserver);
8034: } else {
8035: @listing_results = map { &unescape($_); } split(/:/,$listing);
8036: }
8037: if ($listing eq 'unknown_cmd') {
8038: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8039: $udom, $tryserver);
8040: @listing_results = split(/:/,$listing);
8041: } else {
8042: @listing_results =
8043: map { &unescape($_); } split(/:/,$listing);
8044: }
8045: if ($listing_results[0] ne 'no_such_dir' &&
8046: $listing_results[0] ne 'empty' &&
8047: $listing_results[0] ne 'con_lost') {
8048: foreach my $line (@listing_results) {
8049: my ($entry) = split(/&/,$line,2);
8050: $allusers{$entry} = 1;
8051: }
8052: }
8053: }
8054: my $alluserstr='';
8055: foreach my $user (sort(keys(%allusers))) {
8056: $alluserstr.=$user.'&user:';
8057: }
8058: $alluserstr=~s/:$//;
8059: return split(/:/,$alluserstr);
8060: } else {
8061: return ('missing user name');
8062: }
8063: } elsif(!defined($getpropath)) {
8064: my @all_domains = sort(&all_domains());
8065: foreach my $domain (@all_domains) {
8066: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
8067: }
8068: return @all_domains;
8069: } else {
8070: return ('missing domain');
8071: }
8072: }
8073:
8074: # --------------------------------------------- GetFileTimestamp
8075: # This function utilizes dirlist and returns the date stamp for
8076: # when it was last modified. It will also return an error of -1
8077: # if an error occurs
8078:
8079: sub GetFileTimestamp {
8080: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8081: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8082: $studentName = &LONCAPA::clean_username($studentName);
8083: my ($fileStat) =
8084: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
8085: undef,$getuserdir);
8086: my @stats = split('&', $fileStat);
8087: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
8088: # @stats contains first the filename, then the stat output
8089: return $stats[10]; # so this is 10 instead of 9.
8090: } else {
8091: return -1;
8092: }
8093: }
8094:
8095: sub stat_file {
8096: my ($uri) = @_;
8097: $uri = &clutter_with_no_wrapper($uri);
8098:
8099: my ($udom,$uname,$file);
8100: if ($uri =~ m-^/(uploaded|editupload)/-) {
8101: ($udom,$uname,$file) =
8102: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8103: $file = 'userfiles/'.$file;
8104: }
8105: if ($uri =~ m-^/res/-) {
8106: ($udom,$uname) =
8107: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8108: $file = $uri;
8109: }
8110:
8111: if (!$udom || !$uname || !$file) {
8112: # unable to handle the uri
8113: return ();
8114: }
8115: my $getpropath;
8116: if ($file =~ /^userfiles\//) {
8117: $getpropath = 1;
8118: }
8119: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
8120: my @stats = split('&', $result);
8121:
8122: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
8123: shift(@stats); #filename is first
8124: return @stats;
8125: }
8126: return ();
8127: }
8128:
8129: # -------------------------------------------------------- Value of a Condition
8130:
8131: # gets the value of a specific preevaluated condition
8132: # stored in the string $env{user.state.<cid>}
8133: # or looks up a condition reference in the bighash and if if hasn't
8134: # already been evaluated recurses into docondval to get the value of
8135: # the condition, then memoizing it to
8136: # $env{user.state.<cid>.<condition>}
8137: sub directcondval {
8138: my $number=shift;
8139: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8140: &Apache::lonuserstate::evalstate();
8141: }
8142: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8143: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8144: } elsif ($number =~ /^_/) {
8145: my $sub_condition;
8146: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8147: &GDBM_READER(),0640)) {
8148: $sub_condition=$bighash{'conditions'.$number};
8149: untie(%bighash);
8150: }
8151: my $value = &docondval($sub_condition);
8152: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8153: return $value;
8154: }
8155: if ($env{'user.state.'.$env{'request.course.id'}}) {
8156: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8157: } else {
8158: return 2;
8159: }
8160: }
8161:
8162: # get the collection of conditions for this resource
8163: sub condval {
8164: my $condidx=shift;
8165: my $allpathcond='';
8166: foreach my $cond (split(/\|/,$condidx)) {
8167: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8168: $allpathcond.=
8169: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8170: }
8171: }
8172: $allpathcond=~s/\|$//;
8173: return &docondval($allpathcond);
8174: }
8175:
8176: #evaluates an expression of conditions
8177: sub docondval {
8178: my ($allpathcond) = @_;
8179: my $result=0;
8180: if ($env{'request.course.id'}
8181: && defined($allpathcond)) {
8182: my $operand='|';
8183: my @stack;
8184: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8185: if ($chunk eq '(') {
8186: push @stack,($operand,$result);
8187: } elsif ($chunk eq ')') {
8188: my $before=pop @stack;
8189: if (pop @stack eq '&') {
8190: $result=$result>$before?$before:$result;
8191: } else {
8192: $result=$result>$before?$result:$before;
8193: }
8194: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8195: $operand=$chunk;
8196: } else {
8197: my $new=directcondval($chunk);
8198: if ($operand eq '&') {
8199: $result=$result>$new?$new:$result;
8200: } else {
8201: $result=$result>$new?$result:$new;
8202: }
8203: }
8204: }
8205: }
8206: return $result;
8207: }
8208:
8209: # ---------------------------------------------------- Devalidate courseresdata
8210:
8211: sub devalidatecourseresdata {
8212: my ($coursenum,$coursedomain)=@_;
8213: my $hashid=$coursenum.':'.$coursedomain;
8214: &devalidate_cache_new('courseres',$hashid);
8215: }
8216:
8217:
8218: # --------------------------------------------------- Course Resourcedata Query
8219: #
8220: # Parameters:
8221: # $coursenum - Number of the course.
8222: # $coursedomain - Domain at which the course was created.
8223: # Returns:
8224: # A hash of the course parameters along (I think) with timestamps
8225: # and version info.
8226:
8227: sub get_courseresdata {
8228: my ($coursenum,$coursedomain)=@_;
8229: my $coursehom=&homeserver($coursenum,$coursedomain);
8230: my $hashid=$coursenum.':'.$coursedomain;
8231: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8232: my %dumpreply;
8233: unless (defined($cached)) {
8234: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8235: $result=\%dumpreply;
8236: my ($tmp) = keys(%dumpreply);
8237: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8238: &do_cache_new('courseres',$hashid,$result,600);
8239: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8240: return $tmp;
8241: } elsif ($tmp =~ /^(error)/) {
8242: $result=undef;
8243: &do_cache_new('courseres',$hashid,$result,600);
8244: }
8245: }
8246: return $result;
8247: }
8248:
8249: sub devalidateuserresdata {
8250: my ($uname,$udom)=@_;
8251: my $hashid="$udom:$uname";
8252: &devalidate_cache_new('userres',$hashid);
8253: }
8254:
8255: sub get_userresdata {
8256: my ($uname,$udom)=@_;
8257: #most student don\'t have any data set, check if there is some data
8258: if (&EXT_cache_status($udom,$uname)) { return undef; }
8259:
8260: my $hashid="$udom:$uname";
8261: my ($result,$cached)=&is_cached_new('userres',$hashid);
8262: if (!defined($cached)) {
8263: my %resourcedata=&dump('resourcedata',$udom,$uname);
8264: $result=\%resourcedata;
8265: &do_cache_new('userres',$hashid,$result,600);
8266: }
8267: my ($tmp)=keys(%$result);
8268: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8269: return $result;
8270: }
8271: #error 2 occurs when the .db doesn't exist
8272: if ($tmp!~/error: 2 /) {
8273: &logthis("<font color=\"blue\">WARNING:".
8274: " Trying to get resource data for ".
8275: $uname." at ".$udom.": ".
8276: $tmp."</font>");
8277: } elsif ($tmp=~/error: 2 /) {
8278: #&EXT_cache_set($udom,$uname);
8279: &do_cache_new('userres',$hashid,undef,600);
8280: undef($tmp); # not really an error so don't send it back
8281: }
8282: return $tmp;
8283: }
8284: #----------------------------------------------- resdata - return resource data
8285: # Purpose:
8286: # Return resource data for either users or for a course.
8287: # Parameters:
8288: # $name - Course/user name.
8289: # $domain - Name of the domain the user/course is registered on.
8290: # $type - Type of thing $name is (must be 'course' or 'user'
8291: # @which - Array of names of resources desired.
8292: # Returns:
8293: # The value of the first reasource in @which that is found in the
8294: # resource hash.
8295: # Exceptional Conditions:
8296: # If the $type passed in is not valid (not the string 'course' or
8297: # 'user', an undefined reference is returned.
8298: # If none of the resources are found, an undef is returned
8299: sub resdata {
8300: my ($name,$domain,$type,@which)=@_;
8301: my $result;
8302: if ($type eq 'course') {
8303: $result=&get_courseresdata($name,$domain);
8304: } elsif ($type eq 'user') {
8305: $result=&get_userresdata($name,$domain);
8306: }
8307: if (!ref($result)) { return $result; }
8308: foreach my $item (@which) {
8309: if (defined($result->{$item->[0]})) {
8310: return [$result->{$item->[0]},$item->[1]];
8311: }
8312: }
8313: return undef;
8314: }
8315:
8316: #
8317: # EXT resource caching routines
8318: #
8319:
8320: sub clear_EXT_cache_status {
8321: &delenv('cache.EXT.');
8322: }
8323:
8324: sub EXT_cache_status {
8325: my ($target_domain,$target_user) = @_;
8326: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8327: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8328: # We know already the user has no data
8329: return 1;
8330: } else {
8331: return 0;
8332: }
8333: }
8334:
8335: sub EXT_cache_set {
8336: my ($target_domain,$target_user) = @_;
8337: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8338: #&appenv({$cachename => time});
8339: }
8340:
8341: # --------------------------------------------------------- Value of a Variable
8342: sub EXT {
8343:
8344: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8345: unless ($varname) { return ''; }
8346: #get real user name/domain, courseid and symb
8347: my $courseid;
8348: my $publicuser;
8349: if ($symbparm) {
8350: $symbparm=&get_symb_from_alias($symbparm);
8351: }
8352: if (!($uname && $udom)) {
8353: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8354: if (!$symbparm) { $symbparm=$cursymb; }
8355: } else {
8356: $courseid=$env{'request.course.id'};
8357: }
8358: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8359: my $rest;
8360: if (defined($therest[0])) {
8361: $rest=join('.',@therest);
8362: } else {
8363: $rest='';
8364: }
8365:
8366: my $qualifierrest=$qualifier;
8367: if ($rest) { $qualifierrest.='.'.$rest; }
8368: my $spacequalifierrest=$space;
8369: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8370: if ($realm eq 'user') {
8371: # --------------------------------------------------------------- user.resource
8372: if ($space eq 'resource') {
8373: if ( (defined($Apache::lonhomework::parsing_a_problem)
8374: || defined($Apache::lonhomework::parsing_a_task))
8375: &&
8376: ($symbparm eq &symbread()) ) {
8377: # if we are in the middle of processing the resource the
8378: # get the value we are planning on committing
8379: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8380: return $Apache::lonhomework::results{$qualifierrest};
8381: } else {
8382: return $Apache::lonhomework::history{$qualifierrest};
8383: }
8384: } else {
8385: my %restored;
8386: if ($publicuser || $env{'request.state'} eq 'construct') {
8387: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8388: } else {
8389: %restored=&restore($symbparm,$courseid,$udom,$uname);
8390: }
8391: return $restored{$qualifierrest};
8392: }
8393: # ----------------------------------------------------------------- user.access
8394: } elsif ($space eq 'access') {
8395: # FIXME - not supporting calls for a specific user
8396: return &allowed($qualifier,$rest);
8397: # ------------------------------------------ user.preferences, user.environment
8398: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8399: if (($uname eq $env{'user.name'}) &&
8400: ($udom eq $env{'user.domain'})) {
8401: return $env{join('.',('environment',$qualifierrest))};
8402: } else {
8403: my %returnhash;
8404: if (!$publicuser) {
8405: %returnhash=&userenvironment($udom,$uname,
8406: $qualifierrest);
8407: }
8408: return $returnhash{$qualifierrest};
8409: }
8410: # ----------------------------------------------------------------- user.course
8411: } elsif ($space eq 'course') {
8412: # FIXME - not supporting calls for a specific user
8413: return $env{join('.',('request.course',$qualifier))};
8414: # ------------------------------------------------------------------- user.role
8415: } elsif ($space eq 'role') {
8416: # FIXME - not supporting calls for a specific user
8417: my ($role,$where)=split(/\./,$env{'request.role'});
8418: if ($qualifier eq 'value') {
8419: return $role;
8420: } elsif ($qualifier eq 'extent') {
8421: return $where;
8422: }
8423: # ----------------------------------------------------------------- user.domain
8424: } elsif ($space eq 'domain') {
8425: return $udom;
8426: # ------------------------------------------------------------------- user.name
8427: } elsif ($space eq 'name') {
8428: return $uname;
8429: # ---------------------------------------------------- Any other user namespace
8430: } else {
8431: my %reply;
8432: if (!$publicuser) {
8433: %reply=&get($space,[$qualifierrest],$udom,$uname);
8434: }
8435: return $reply{$qualifierrest};
8436: }
8437: } elsif ($realm eq 'query') {
8438: # ---------------------------------------------- pull stuff out of query string
8439: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8440: [$spacequalifierrest]);
8441: return $env{'form.'.$spacequalifierrest};
8442: } elsif ($realm eq 'request') {
8443: # ------------------------------------------------------------- request.browser
8444: if ($space eq 'browser') {
8445: if ($qualifier eq 'textremote') {
8446: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8447: return 1;
8448: } else {
8449: return 0;
8450: }
8451: } else {
8452: return $env{'browser.'.$qualifier};
8453: }
8454: # ------------------------------------------------------------ request.filename
8455: } else {
8456: return $env{'request.'.$spacequalifierrest};
8457: }
8458: } elsif ($realm eq 'course') {
8459: # ---------------------------------------------------------- course.description
8460: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8461: } elsif ($realm eq 'resource') {
8462:
8463: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8464: if (!$symbparm) { $symbparm=&symbread(); }
8465: }
8466:
8467: if ($space eq 'title') {
8468: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8469: return &gettitle($symbparm);
8470: }
8471:
8472: if ($space eq 'map') {
8473: my ($map) = &decode_symb($symbparm);
8474: return &symbread($map);
8475: }
8476: if ($space eq 'filename') {
8477: if ($symbparm) {
8478: return &clutter((&decode_symb($symbparm))[2]);
8479: }
8480: return &hreflocation('',$env{'request.filename'});
8481: }
8482:
8483: my ($section, $group, @groups);
8484: my ($courselevelm,$courselevel);
8485: if ($symbparm && defined($courseid) &&
8486: $courseid eq $env{'request.course.id'}) {
8487:
8488: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8489:
8490: # ----------------------------------------------------- Cascading lookup scheme
8491: my $symbp=$symbparm;
8492: my $mapp=&deversion((&decode_symb($symbp))[0]);
8493:
8494: my $symbparm=$symbp.'.'.$spacequalifierrest;
8495: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8496:
8497: if (($env{'user.name'} eq $uname) &&
8498: ($env{'user.domain'} eq $udom)) {
8499: $section=$env{'request.course.sec'};
8500: @groups = split(/:/,$env{'request.course.groups'});
8501: @groups=&sort_course_groups($courseid,@groups);
8502: } else {
8503: if (! defined($usection)) {
8504: $section=&getsection($udom,$uname,$courseid);
8505: } else {
8506: $section = $usection;
8507: }
8508: @groups = &get_users_groups($udom,$uname,$courseid);
8509: }
8510:
8511: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8512: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8513: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8514:
8515: $courselevel=$courseid.'.'.$spacequalifierrest;
8516: my $courselevelr=$courseid.'.'.$symbparm;
8517: $courselevelm=$courseid.'.'.$mapparm;
8518:
8519: # ----------------------------------------------------------- first, check user
8520:
8521: my $userreply=&resdata($uname,$udom,'user',
8522: ([$courselevelr,'resource'],
8523: [$courselevelm,'map' ],
8524: [$courselevel, 'course' ]));
8525: if (defined($userreply)) { return &get_reply($userreply); }
8526:
8527: # ------------------------------------------------ second, check some of course
8528: my $coursereply;
8529: if (@groups > 0) {
8530: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8531: $mapparm,$spacequalifierrest);
8532: if (defined($coursereply)) { return &get_reply($coursereply); }
8533: }
8534:
8535: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8536: $env{'course.'.$courseid.'.domain'},
8537: 'course',
8538: ([$seclevelr, 'resource'],
8539: [$seclevelm, 'map' ],
8540: [$seclevel, 'course' ],
8541: [$courselevelr,'resource']));
8542: if (defined($coursereply)) { return &get_reply($coursereply); }
8543:
8544: # ------------------------------------------------------ third, check map parms
8545: my %parmhash=();
8546: my $thisparm='';
8547: if (tie(%parmhash,'GDBM_File',
8548: $env{'request.course.fn'}.'_parms.db',
8549: &GDBM_READER(),0640)) {
8550: $thisparm=$parmhash{$symbparm};
8551: untie(%parmhash);
8552: }
8553: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8554: }
8555: # ------------------------------------------ fourth, look in resource metadata
8556:
8557: $spacequalifierrest=~s/\./\_/;
8558: my $filename;
8559: if (!$symbparm) { $symbparm=&symbread(); }
8560: if ($symbparm) {
8561: $filename=(&decode_symb($symbparm))[2];
8562: } else {
8563: $filename=$env{'request.filename'};
8564: }
8565: my $metadata=&metadata($filename,$spacequalifierrest);
8566: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8567: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8568: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8569:
8570: # ---------------------------------------------- fourth, look in rest of course
8571: if ($symbparm && defined($courseid) &&
8572: $courseid eq $env{'request.course.id'}) {
8573: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8574: $env{'course.'.$courseid.'.domain'},
8575: 'course',
8576: ([$courselevelm,'map' ],
8577: [$courselevel, 'course']));
8578: if (defined($coursereply)) { return &get_reply($coursereply); }
8579: }
8580: # ------------------------------------------------------------------ Cascade up
8581: unless ($space eq '0') {
8582: my @parts=split(/_/,$space);
8583: my $id=pop(@parts);
8584: my $part=join('_',@parts);
8585: if ($part eq '') { $part='0'; }
8586: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8587: $symbparm,$udom,$uname,$section,1);
8588: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8589: }
8590: if ($recurse) { return undef; }
8591: my $pack_def=&packages_tab_default($filename,$varname);
8592: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8593: # ---------------------------------------------------- Any other user namespace
8594: } elsif ($realm eq 'environment') {
8595: # ----------------------------------------------------------------- environment
8596: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8597: return $env{'environment.'.$spacequalifierrest};
8598: } else {
8599: if ($uname eq 'anonymous' && $udom eq '') {
8600: return '';
8601: }
8602: my %returnhash=&userenvironment($udom,$uname,
8603: $spacequalifierrest);
8604: return $returnhash{$spacequalifierrest};
8605: }
8606: } elsif ($realm eq 'system') {
8607: # ----------------------------------------------------------------- system.time
8608: if ($space eq 'time') {
8609: return time;
8610: }
8611: } elsif ($realm eq 'server') {
8612: # ----------------------------------------------------------------- system.time
8613: if ($space eq 'name') {
8614: return $ENV{'SERVER_NAME'};
8615: }
8616: }
8617: return '';
8618: }
8619:
8620: sub get_reply {
8621: my ($reply_value) = @_;
8622: if (ref($reply_value) eq 'ARRAY') {
8623: if (wantarray) {
8624: return @$reply_value;
8625: }
8626: return $reply_value->[0];
8627: } else {
8628: return $reply_value;
8629: }
8630: }
8631:
8632: sub check_group_parms {
8633: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8634: my @groupitems = ();
8635: my $resultitem;
8636: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8637: foreach my $group (@{$groups}) {
8638: foreach my $level (@levels) {
8639: my $item = $courseid.'.['.$group.'].'.$level->[0];
8640: push(@groupitems,[$item,$level->[1]]);
8641: }
8642: }
8643: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8644: $env{'course.'.$courseid.'.domain'},
8645: 'course',@groupitems);
8646: return $coursereply;
8647: }
8648:
8649: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8650: my ($courseid,@groups) = @_;
8651: @groups = sort(@groups);
8652: return @groups;
8653: }
8654:
8655: sub packages_tab_default {
8656: my ($uri,$varname)=@_;
8657: my (undef,$part,$name)=split(/\./,$varname);
8658:
8659: my (@extension,@specifics,$do_default);
8660: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8661: my ($pack_type,$pack_part)=split(/_/,$package,2);
8662: if ($pack_type eq 'default') {
8663: $do_default=1;
8664: } elsif ($pack_type eq 'extension') {
8665: push(@extension,[$package,$pack_type,$pack_part]);
8666: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8667: # only look at packages defaults for packages that this id is
8668: push(@specifics,[$package,$pack_type,$pack_part]);
8669: }
8670: }
8671: # first look for a package that matches the requested part id
8672: foreach my $package (@specifics) {
8673: my (undef,$pack_type,$pack_part)=@{$package};
8674: next if ($pack_part ne $part);
8675: if (defined($packagetab{"$pack_type&$name&default"})) {
8676: return $packagetab{"$pack_type&$name&default"};
8677: }
8678: }
8679: # look for any possible matching non extension_ package
8680: foreach my $package (@specifics) {
8681: my (undef,$pack_type,$pack_part)=@{$package};
8682: if (defined($packagetab{"$pack_type&$name&default"})) {
8683: return $packagetab{"$pack_type&$name&default"};
8684: }
8685: if ($pack_type eq 'part') { $pack_part='0'; }
8686: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8687: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8688: }
8689: }
8690: # look for any posible extension_ match
8691: foreach my $package (@extension) {
8692: my ($package,$pack_type)=@{$package};
8693: if (defined($packagetab{"$pack_type&$name&default"})) {
8694: return $packagetab{"$pack_type&$name&default"};
8695: }
8696: if (defined($packagetab{$package."&$name&default"})) {
8697: return $packagetab{$package."&$name&default"};
8698: }
8699: }
8700: # look for a global default setting
8701: if ($do_default && defined($packagetab{"default&$name&default"})) {
8702: return $packagetab{"default&$name&default"};
8703: }
8704: return undef;
8705: }
8706:
8707: sub add_prefix_and_part {
8708: my ($prefix,$part)=@_;
8709: my $keyroot;
8710: if (defined($prefix) && $prefix !~ /^__/) {
8711: # prefix that has a part already
8712: $keyroot=$prefix;
8713: } elsif (defined($prefix)) {
8714: # prefix that is missing a part
8715: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8716: } else {
8717: # no prefix at all
8718: if (defined($part)) { $keyroot='_'.$part; }
8719: }
8720: return $keyroot;
8721: }
8722:
8723: # ---------------------------------------------------------------- Get metadata
8724:
8725: my %metaentry;
8726: my %importedpartids;
8727: sub metadata {
8728: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8729: $uri=&declutter($uri);
8730: # if it is a non metadata possible uri return quickly
8731: if (($uri eq '') ||
8732: (($uri =~ m|^/*adm/|) &&
8733: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8734: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
8735: return undef;
8736: }
8737: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8738: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8739: return undef;
8740: }
8741: my $filename=$uri;
8742: $uri=~s/\.meta$//;
8743: #
8744: # Is the metadata already cached?
8745: # Look at timestamp of caching
8746: # Everything is cached by the main uri, libraries are never directly cached
8747: #
8748: if (!defined($liburi)) {
8749: my ($result,$cached)=&is_cached_new('meta',$uri);
8750: if (defined($cached)) { return $result->{':'.$what}; }
8751: }
8752: {
8753: # Imported parts would go here
8754: my %importedids=();
8755: my @origfileimportpartids=();
8756: my $importedparts=0;
8757: #
8758: # Is this a recursive call for a library?
8759: #
8760: # if (! exists($metacache{$uri})) {
8761: # $metacache{$uri}={};
8762: # }
8763: my $cachetime = 60*60;
8764: if ($liburi) {
8765: $liburi=&declutter($liburi);
8766: $filename=$liburi;
8767: } else {
8768: &devalidate_cache_new('meta',$uri);
8769: undef(%metaentry);
8770: }
8771: my %metathesekeys=();
8772: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8773: my $metastring;
8774: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8775: my $which = &hreflocation('','/'.($liburi || $uri));
8776: $metastring =
8777: &Apache::lonnet::ssi_body($which,
8778: ('grade_target' => 'meta'));
8779: $cachetime = 1; # only want this cached in the child not long term
8780: } elsif (($uri !~ m -^(editupload)/-) &&
8781: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
8782: my $file=&filelocation('',&clutter($filename));
8783: #push(@{$metaentry{$uri.'.file'}},$file);
8784: $metastring=&getfile($file);
8785: }
8786: my $parser=HTML::LCParser->new(\$metastring);
8787: my $token;
8788: undef %metathesekeys;
8789: while ($token=$parser->get_token) {
8790: if ($token->[0] eq 'S') {
8791: if (defined($token->[2]->{'package'})) {
8792: #
8793: # This is a package - get package info
8794: #
8795: my $package=$token->[2]->{'package'};
8796: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8797: if (defined($token->[2]->{'id'})) {
8798: $keyroot.='_'.$token->[2]->{'id'};
8799: }
8800: if ($metaentry{':packages'}) {
8801: $metaentry{':packages'}.=','.$package.$keyroot;
8802: } else {
8803: $metaentry{':packages'}=$package.$keyroot;
8804: }
8805: foreach my $pack_entry (keys(%packagetab)) {
8806: my $part=$keyroot;
8807: $part=~s/^\_//;
8808: if ($pack_entry=~/^\Q$package\E\&/ ||
8809: $pack_entry=~/^\Q$package\E_0\&/) {
8810: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8811: # ignore package.tab specified default values
8812: # here &package_tab_default() will fetch those
8813: if ($subp eq 'default') { next; }
8814: my $value=$packagetab{$pack_entry};
8815: my $unikey;
8816: if ($pack =~ /_0$/) {
8817: $unikey='parameter_0_'.$name;
8818: $part=0;
8819: } else {
8820: $unikey='parameter'.$keyroot.'_'.$name;
8821: }
8822: if ($subp eq 'display') {
8823: $value.=' [Part: '.$part.']';
8824: }
8825: $metaentry{':'.$unikey.'.part'}=$part;
8826: $metathesekeys{$unikey}=1;
8827: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8828: $metaentry{':'.$unikey.'.'.$subp}=$value;
8829: }
8830: if (defined($metaentry{':'.$unikey.'.default'})) {
8831: $metaentry{':'.$unikey}=
8832: $metaentry{':'.$unikey.'.default'};
8833: }
8834: }
8835: }
8836: } else {
8837: #
8838: # This is not a package - some other kind of start tag
8839: #
8840: my $entry=$token->[1];
8841: my $unikey='';
8842:
8843: if ($entry eq 'import') {
8844: #
8845: # Importing a library here
8846: #
8847: my $location=$parser->get_text('/import');
8848: my $dir=$filename;
8849: $dir=~s|[^/]*$||;
8850: $location=&filelocation($dir,$location);
8851:
8852: my $importmode=$token->[2]->{'importmode'};
8853: if ($importmode eq 'problem') {
8854: # Import as problem/response
8855: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8856: } elsif ($importmode eq 'part') {
8857: # Import as part(s)
8858: $importedparts=1;
8859: # We need to get the original file and the imported file to get the part order correct
8860: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8861: # Load and inspect original file
8862: if ($#origfileimportpartids<0) {
8863: undef(%importedpartids);
8864: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8865: my $origfile=&getfile($origfilelocation);
8866: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8867: }
8868:
8869: # Load and inspect imported file
8870: my $impfile=&getfile($location);
8871: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8872: if ($#impfilepartids>=0) {
8873: # This problem had parts
8874: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8875: } else {
8876: # Importing by turning a single problem into a problem part
8877: # It gets the import-tags ID as part-ID
8878: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8879: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8880: }
8881: } else {
8882: # Normal import
8883: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8884: if (defined($token->[2]->{'id'})) {
8885: $unikey.='_'.$token->[2]->{'id'};
8886: }
8887: }
8888:
8889: if ($depthcount<20) {
8890: my $metadata =
8891: &metadata($uri,'keys', $location,$unikey,
8892: $depthcount+1);
8893: foreach my $meta (split(',',$metadata)) {
8894: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8895: $metathesekeys{$meta}=1;
8896: }
8897:
8898: }
8899: } else {
8900: #
8901: # Not importing, some other kind of non-package, non-library start tag
8902: #
8903: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8904: if (defined($token->[2]->{'id'})) {
8905: $unikey.='_'.$token->[2]->{'id'};
8906: }
8907: if (defined($token->[2]->{'name'})) {
8908: $unikey.='_'.$token->[2]->{'name'};
8909: }
8910: $metathesekeys{$unikey}=1;
8911: foreach my $param (@{$token->[3]}) {
8912: $metaentry{':'.$unikey.'.'.$param} =
8913: $token->[2]->{$param};
8914: }
8915: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8916: my $default=$metaentry{':'.$unikey.'.default'};
8917: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8918: # only ws inside the tag, and not in default, so use default
8919: # as value
8920: $metaentry{':'.$unikey}=$default;
8921: } elsif ( $internaltext =~ /\S/ ) {
8922: # something interesting inside the tag
8923: $metaentry{':'.$unikey}=$internaltext;
8924: } else {
8925: # no interesting values, don't set a default
8926: }
8927: # end of not-a-package not-a-library import
8928: }
8929: # end of not-a-package start tag
8930: }
8931: # the next is the end of "start tag"
8932: }
8933: }
8934: my ($extension) = ($uri =~ /\.(\w+)$/);
8935: $extension = lc($extension);
8936: if ($extension eq 'htm') { $extension='html'; }
8937:
8938: foreach my $key (keys(%packagetab)) {
8939: #no specific packages #how's our extension
8940: if ($key!~/^extension_\Q$extension\E&/) { next; }
8941: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8942: \%metathesekeys);
8943: }
8944:
8945: if (!exists($metaentry{':packages'})
8946: || $packagetab{"import_defaults&extension_$extension"}) {
8947: foreach my $key (keys(%packagetab)) {
8948: #no specific packages well let's get default then
8949: if ($key!~/^default&/) { next; }
8950: &metadata_create_package_def($uri,$key,'default',
8951: \%metathesekeys);
8952: }
8953: }
8954: # are there custom rights to evaluate
8955: if ($metaentry{':copyright'} eq 'custom') {
8956:
8957: #
8958: # Importing a rights file here
8959: #
8960: unless ($depthcount) {
8961: my $location=$metaentry{':customdistributionfile'};
8962: my $dir=$filename;
8963: $dir=~s|[^/]*$||;
8964: $location=&filelocation($dir,$location);
8965: my $rights_metadata =
8966: &metadata($uri,'keys',$location,'_rights',
8967: $depthcount+1);
8968: foreach my $rights (split(',',$rights_metadata)) {
8969: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8970: $metathesekeys{$rights}=1;
8971: }
8972: }
8973: }
8974: # uniqifiy package listing
8975: my %seen;
8976: my @uniq_packages =
8977: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8978: $metaentry{':packages'} = join(',',@uniq_packages);
8979:
8980: if ($importedparts) {
8981: # We had imported parts and need to rebuild partorder
8982: $metaentry{':partorder'}='';
8983: $metathesekeys{'partorder'}=1;
8984: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8985: if ($origfileimportpartids[$index] eq 'part') {
8986: # original part, part of the problem
8987: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8988: } else {
8989: # we have imported parts at this position
8990: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8991: }
8992: }
8993: $metaentry{':partorder'}=~s/^\,//;
8994: }
8995:
8996: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8997: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8998: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8999: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9000: # this is the end of "was not already recently cached
9001: }
9002: return $metaentry{':'.$what};
9003: }
9004:
9005: sub metadata_create_package_def {
9006: my ($uri,$key,$package,$metathesekeys)=@_;
9007: my ($pack,$name,$subp)=split(/\&/,$key);
9008: if ($subp eq 'default') { next; }
9009:
9010: if (defined($metaentry{':packages'})) {
9011: $metaentry{':packages'}.=','.$package;
9012: } else {
9013: $metaentry{':packages'}=$package;
9014: }
9015: my $value=$packagetab{$key};
9016: my $unikey;
9017: $unikey='parameter_0_'.$name;
9018: $metaentry{':'.$unikey.'.part'}=0;
9019: $$metathesekeys{$unikey}=1;
9020: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9021: $metaentry{':'.$unikey.'.'.$subp}=$value;
9022: }
9023: if (defined($metaentry{':'.$unikey.'.default'})) {
9024: $metaentry{':'.$unikey}=
9025: $metaentry{':'.$unikey.'.default'};
9026: }
9027: }
9028:
9029: sub metadata_generate_part0 {
9030: my ($metadata,$metacache,$uri) = @_;
9031: my %allnames;
9032: foreach my $metakey (keys(%$metadata)) {
9033: if ($metakey=~/^parameter\_(.*)/) {
9034: my $part=$$metacache{':'.$metakey.'.part'};
9035: my $name=$$metacache{':'.$metakey.'.name'};
9036: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9037: $allnames{$name}=$part;
9038: }
9039: }
9040: }
9041: foreach my $name (keys(%allnames)) {
9042: $$metadata{"parameter_0_$name"}=1;
9043: my $key=":parameter_0_$name";
9044: $$metacache{"$key.part"}='0';
9045: $$metacache{"$key.name"}=$name;
9046: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9047: $allnames{$name}.'_'.$name.
9048: '.type'};
9049: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9050: '.display'};
9051: my $expr='[Part: '.$allnames{$name}.']';
9052: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9053: $$metacache{"$key.display"}=$olddis;
9054: }
9055: }
9056:
9057: # ------------------------------------------------------ Devalidate title cache
9058:
9059: sub devalidate_title_cache {
9060: my ($url)=@_;
9061: if (!$env{'request.course.id'}) { return; }
9062: my $symb=&symbread($url);
9063: if (!$symb) { return; }
9064: my $key=$env{'request.course.id'}."\0".$symb;
9065: &devalidate_cache_new('title',$key);
9066: }
9067:
9068: # ------------------------------------------------- Get the title of a course
9069:
9070: sub current_course_title {
9071: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9072: }
9073: # ------------------------------------------------- Get the title of a resource
9074:
9075: sub gettitle {
9076: my $urlsymb=shift;
9077: my $symb=&symbread($urlsymb);
9078: if ($symb) {
9079: my $key=$env{'request.course.id'}."\0".$symb;
9080: my ($result,$cached)=&is_cached_new('title',$key);
9081: if (defined($cached)) {
9082: return $result;
9083: }
9084: my ($map,$resid,$url)=&decode_symb($symb);
9085: my $title='';
9086: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9087: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9088: } else {
9089: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9090: &GDBM_READER(),0640)) {
9091: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9092: $title=$bighash{'title_'.$mapid.'.'.$resid};
9093: untie(%bighash);
9094: }
9095: }
9096: $title=~s/\&colon\;/\:/gs;
9097: if ($title) {
9098: return &do_cache_new('title',$key,$title,600);
9099: }
9100: $urlsymb=$url;
9101: }
9102: my $title=&metadata($urlsymb,'title');
9103: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9104: return $title;
9105: }
9106:
9107: sub get_slot {
9108: my ($which,$cnum,$cdom)=@_;
9109: if (!$cnum || !$cdom) {
9110: (undef,my $courseid)=&whichuser();
9111: $cdom=$env{'course.'.$courseid.'.domain'};
9112: $cnum=$env{'course.'.$courseid.'.num'};
9113: }
9114: my $key=join("\0",'slots',$cdom,$cnum,$which);
9115: my %slotinfo;
9116: if (exists($remembered{$key})) {
9117: $slotinfo{$which} = $remembered{$key};
9118: } else {
9119: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9120: &Apache::lonhomework::showhash(%slotinfo);
9121: my ($tmp)=keys(%slotinfo);
9122: if ($tmp=~/^error:/) { return (); }
9123: $remembered{$key} = $slotinfo{$which};
9124: }
9125: if (ref($slotinfo{$which}) eq 'HASH') {
9126: return %{$slotinfo{$which}};
9127: }
9128: return $slotinfo{$which};
9129: }
9130: # ------------------------------------------------- Update symbolic store links
9131:
9132: sub symblist {
9133: my ($mapname,%newhash)=@_;
9134: $mapname=&deversion(&declutter($mapname));
9135: my %hash;
9136: if (($env{'request.course.fn'}) && (%newhash)) {
9137: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9138: &GDBM_WRCREAT(),0640)) {
9139: foreach my $url (keys(%newhash)) {
9140: next if ($url eq 'last_known'
9141: && $env{'form.no_update_last_known'});
9142: $hash{declutter($url)}=&encode_symb($mapname,
9143: $newhash{$url}->[1],
9144: $newhash{$url}->[0]);
9145: }
9146: if (untie(%hash)) {
9147: return 'ok';
9148: }
9149: }
9150: }
9151: return 'error';
9152: }
9153:
9154: # --------------------------------------------------------------- Verify a symb
9155:
9156: sub symbverify {
9157: my ($symb,$thisurl)=@_;
9158: my $thisfn=$thisurl;
9159: $thisfn=&declutter($thisfn);
9160: # direct jump to resource in page or to a sequence - will construct own symbs
9161: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9162: # check URL part
9163: my ($map,$resid,$url)=&decode_symb($symb);
9164:
9165: unless ($url eq $thisfn) { return 0; }
9166:
9167: $symb=&symbclean($symb);
9168: $thisurl=&deversion($thisurl);
9169: $thisfn=&deversion($thisfn);
9170:
9171: my %bighash;
9172: my $okay=0;
9173:
9174: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9175: &GDBM_READER(),0640)) {
9176: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9177: $thisurl =~ s/\?.+$//;
9178: }
9179: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9180: unless ($ids) {
9181: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9182: $ids=$bighash{$idkey};
9183: }
9184: if ($ids) {
9185: # ------------------------------------------------------------------- Has ID(s)
9186: foreach my $id (split(/\,/,$ids)) {
9187: my ($mapid,$resid)=split(/\./,$id);
9188: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9189: $symb =~ s/\?.+$//;
9190: }
9191: if (
9192: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9193: eq $symb) {
9194: if (($env{'request.role.adv'}) ||
9195: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9196: ($thisurl eq '/adm/navmaps')) {
9197: $okay=1;
9198: }
9199: }
9200: }
9201: }
9202: untie(%bighash);
9203: }
9204: return $okay;
9205: }
9206:
9207: # --------------------------------------------------------------- Clean-up symb
9208:
9209: sub symbclean {
9210: my $symb=shift;
9211: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9212: # remove version from map
9213: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9214:
9215: # remove version from URL
9216: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9217:
9218: # remove wrapper
9219:
9220: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9221: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9222: return $symb;
9223: }
9224:
9225: # ---------------------------------------------- Split symb to find map and url
9226:
9227: sub encode_symb {
9228: my ($map,$resid,$url)=@_;
9229: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9230: }
9231:
9232: sub decode_symb {
9233: my $symb=shift;
9234: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9235: my ($map,$resid,$url)=split(/___/,$symb);
9236: return (&fixversion($map),$resid,&fixversion($url));
9237: }
9238:
9239: sub fixversion {
9240: my $fn=shift;
9241: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9242: my %bighash;
9243: my $uri=&clutter($fn);
9244: my $key=$env{'request.course.id'}.'_'.$uri;
9245: # is this cached?
9246: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9247: if (defined($cached)) { return $result; }
9248: # unfortunately not cached, or expired
9249: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9250: &GDBM_READER(),0640)) {
9251: if ($bighash{'version_'.$uri}) {
9252: my $version=$bighash{'version_'.$uri};
9253: unless (($version eq 'mostrecent') ||
9254: ($version==&getversion($uri))) {
9255: $uri=~s/\.(\w+)$/\.$version\.$1/;
9256: }
9257: }
9258: untie %bighash;
9259: }
9260: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9261: }
9262:
9263: sub deversion {
9264: my $url=shift;
9265: $url=~s/\.\d+\.(\w+)$/\.$1/;
9266: return $url;
9267: }
9268:
9269: # ------------------------------------------------------ Return symb list entry
9270:
9271: sub symbread {
9272: my ($thisfn,$donotrecurse)=@_;
9273: my $cache_str='request.symbread.cached.'.$thisfn;
9274: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9275: # no filename provided? try from environment
9276: unless ($thisfn) {
9277: if ($env{'request.symb'}) {
9278: return $env{$cache_str}=&symbclean($env{'request.symb'});
9279: }
9280: $thisfn=$env{'request.filename'};
9281: }
9282: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9283: # is that filename actually a symb? Verify, clean, and return
9284: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9285: if (&symbverify($thisfn,$1)) {
9286: return $env{$cache_str}=&symbclean($thisfn);
9287: }
9288: }
9289: $thisfn=declutter($thisfn);
9290: my %hash;
9291: my %bighash;
9292: my $syval='';
9293: if (($env{'request.course.fn'}) && ($thisfn)) {
9294: my $targetfn = $thisfn;
9295: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9296: $targetfn = 'adm/wrapper/'.$thisfn;
9297: }
9298: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9299: $targetfn=$1;
9300: }
9301: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9302: &GDBM_READER(),0640)) {
9303: $syval=$hash{$targetfn};
9304: untie(%hash);
9305: }
9306: # ---------------------------------------------------------- There was an entry
9307: if ($syval) {
9308: #unless ($syval=~/\_\d+$/) {
9309: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9310: #&appenv({'request.ambiguous' => $thisfn});
9311: #return $env{$cache_str}='';
9312: #}
9313: #$syval.=$1;
9314: #}
9315: } else {
9316: # ------------------------------------------------------- Was not in symb table
9317: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9318: &GDBM_READER(),0640)) {
9319: # ---------------------------------------------- Get ID(s) for current resource
9320: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9321: unless ($ids) {
9322: $ids=$bighash{'ids_/'.$thisfn};
9323: }
9324: unless ($ids) {
9325: # alias?
9326: $ids=$bighash{'mapalias_'.$thisfn};
9327: }
9328: if ($ids) {
9329: # ------------------------------------------------------------------- Has ID(s)
9330: my @possibilities=split(/\,/,$ids);
9331: if ($#possibilities==0) {
9332: # ----------------------------------------------- There is only one possibility
9333: my ($mapid,$resid)=split(/\./,$ids);
9334: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9335: $resid,$thisfn);
9336: } elsif (!$donotrecurse) {
9337: # ------------------------------------------ There is more than one possibility
9338: my $realpossible=0;
9339: foreach my $id (@possibilities) {
9340: my $file=$bighash{'src_'.$id};
9341: if (&allowed('bre',$file)) {
9342: my ($mapid,$resid)=split(/\./,$id);
9343: if ($bighash{'map_type_'.$mapid} ne 'page') {
9344: $realpossible++;
9345: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9346: $resid,$thisfn);
9347: }
9348: }
9349: }
9350: if ($realpossible!=1) { $syval=''; }
9351: } else {
9352: $syval='';
9353: }
9354: }
9355: untie(%bighash)
9356: }
9357: }
9358: if ($syval) {
9359: return $env{$cache_str}=$syval;
9360: }
9361: }
9362: &appenv({'request.ambiguous' => $thisfn});
9363: return $env{$cache_str}='';
9364: }
9365:
9366: # ---------------------------------------------------------- Return random seed
9367:
9368: sub numval {
9369: my $txt=shift;
9370: $txt=~tr/A-J/0-9/;
9371: $txt=~tr/a-j/0-9/;
9372: $txt=~tr/K-T/0-9/;
9373: $txt=~tr/k-t/0-9/;
9374: $txt=~tr/U-Z/0-5/;
9375: $txt=~tr/u-z/0-5/;
9376: $txt=~s/\D//g;
9377: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9378: return int($txt);
9379: }
9380:
9381: sub numval2 {
9382: my $txt=shift;
9383: $txt=~tr/A-J/0-9/;
9384: $txt=~tr/a-j/0-9/;
9385: $txt=~tr/K-T/0-9/;
9386: $txt=~tr/k-t/0-9/;
9387: $txt=~tr/U-Z/0-5/;
9388: $txt=~tr/u-z/0-5/;
9389: $txt=~s/\D//g;
9390: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9391: my $total;
9392: foreach my $val (@txts) { $total+=$val; }
9393: if ($_64bit) { if ($total > 2**32) { return -1; } }
9394: return int($total);
9395: }
9396:
9397: sub numval3 {
9398: use integer;
9399: my $txt=shift;
9400: $txt=~tr/A-J/0-9/;
9401: $txt=~tr/a-j/0-9/;
9402: $txt=~tr/K-T/0-9/;
9403: $txt=~tr/k-t/0-9/;
9404: $txt=~tr/U-Z/0-5/;
9405: $txt=~tr/u-z/0-5/;
9406: $txt=~s/\D//g;
9407: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9408: my $total;
9409: foreach my $val (@txts) { $total+=$val; }
9410: if ($_64bit) { $total=(($total<<32)>>32); }
9411: return $total;
9412: }
9413:
9414: sub digest {
9415: my ($data)=@_;
9416: my $digest=&Digest::MD5::md5($data);
9417: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9418: my ($e,$f);
9419: {
9420: use integer;
9421: $e=($a+$b);
9422: $f=($c+$d);
9423: if ($_64bit) {
9424: $e=(($e<<32)>>32);
9425: $f=(($f<<32)>>32);
9426: }
9427: }
9428: if (wantarray) {
9429: return ($e,$f);
9430: } else {
9431: my $g;
9432: {
9433: use integer;
9434: $g=($e+$f);
9435: if ($_64bit) {
9436: $g=(($g<<32)>>32);
9437: }
9438: }
9439: return $g;
9440: }
9441: }
9442:
9443: sub latest_rnd_algorithm_id {
9444: return '64bit5';
9445: }
9446:
9447: sub get_rand_alg {
9448: my ($courseid)=@_;
9449: if (!$courseid) { $courseid=(&whichuser())[1]; }
9450: if ($courseid) {
9451: return $env{"course.$courseid.rndseed"};
9452: }
9453: return &latest_rnd_algorithm_id();
9454: }
9455:
9456: sub validCODE {
9457: my ($CODE)=@_;
9458: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9459: return 0;
9460: }
9461:
9462: sub getCODE {
9463: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9464: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9465: defined($Apache::lonhomework::parsing_a_task) ) &&
9466: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9467: return $Apache::lonhomework::history{'resource.CODE'};
9468: }
9469: return undef;
9470: }
9471:
9472: sub rndseed {
9473: my ($symb,$courseid,$domain,$username)=@_;
9474: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9475: if (!defined($symb)) {
9476: unless ($symb=$wsymb) { return time; }
9477: }
9478: if (!$courseid) { $courseid=$wcourseid; }
9479: if (!$domain) { $domain=$wdomain; }
9480: if (!$username) { $username=$wusername }
9481: my $which=&get_rand_alg();
9482:
9483: if (defined(&getCODE())) {
9484: if ($which eq '64bit5') {
9485: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9486: } elsif ($which eq '64bit4') {
9487: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9488: } else {
9489: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9490: }
9491: } elsif ($which eq '64bit5') {
9492: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9493: } elsif ($which eq '64bit4') {
9494: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9495: } elsif ($which eq '64bit3') {
9496: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9497: } elsif ($which eq '64bit2') {
9498: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9499: } elsif ($which eq '64bit') {
9500: return &rndseed_64bit($symb,$courseid,$domain,$username);
9501: }
9502: return &rndseed_32bit($symb,$courseid,$domain,$username);
9503: }
9504:
9505: sub rndseed_32bit {
9506: my ($symb,$courseid,$domain,$username)=@_;
9507: {
9508: use integer;
9509: my $symbchck=unpack("%32C*",$symb) << 27;
9510: my $symbseed=numval($symb) << 22;
9511: my $namechck=unpack("%32C*",$username) << 17;
9512: my $nameseed=numval($username) << 12;
9513: my $domainseed=unpack("%32C*",$domain) << 7;
9514: my $courseseed=unpack("%32C*",$courseid);
9515: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9516: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9517: #&logthis("rndseed :$num:$symb");
9518: if ($_64bit) { $num=(($num<<32)>>32); }
9519: return $num;
9520: }
9521: }
9522:
9523: sub rndseed_64bit {
9524: my ($symb,$courseid,$domain,$username)=@_;
9525: {
9526: use integer;
9527: my $symbchck=unpack("%32S*",$symb) << 21;
9528: my $symbseed=numval($symb) << 10;
9529: my $namechck=unpack("%32S*",$username);
9530:
9531: my $nameseed=numval($username) << 21;
9532: my $domainseed=unpack("%32S*",$domain) << 10;
9533: my $courseseed=unpack("%32S*",$courseid);
9534:
9535: my $num1=$symbchck+$symbseed+$namechck;
9536: my $num2=$nameseed+$domainseed+$courseseed;
9537: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9538: #&logthis("rndseed :$num:$symb");
9539: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9540: return "$num1,$num2";
9541: }
9542: }
9543:
9544: sub rndseed_64bit2 {
9545: my ($symb,$courseid,$domain,$username)=@_;
9546: {
9547: use integer;
9548: # strings need to be an even # of cahracters long, it it is odd the
9549: # last characters gets thrown away
9550: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9551: my $symbseed=numval($symb) << 10;
9552: my $namechck=unpack("%32S*",$username.' ');
9553:
9554: my $nameseed=numval($username) << 21;
9555: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9556: my $courseseed=unpack("%32S*",$courseid.' ');
9557:
9558: my $num1=$symbchck+$symbseed+$namechck;
9559: my $num2=$nameseed+$domainseed+$courseseed;
9560: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9561: #&logthis("rndseed :$num:$symb");
9562: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9563: return "$num1,$num2";
9564: }
9565: }
9566:
9567: sub rndseed_64bit3 {
9568: my ($symb,$courseid,$domain,$username)=@_;
9569: {
9570: use integer;
9571: # strings need to be an even # of cahracters long, it it is odd the
9572: # last characters gets thrown away
9573: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9574: my $symbseed=numval2($symb) << 10;
9575: my $namechck=unpack("%32S*",$username.' ');
9576:
9577: my $nameseed=numval2($username) << 21;
9578: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9579: my $courseseed=unpack("%32S*",$courseid.' ');
9580:
9581: my $num1=$symbchck+$symbseed+$namechck;
9582: my $num2=$nameseed+$domainseed+$courseseed;
9583: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9584: #&logthis("rndseed :$num1:$num2:$_64bit");
9585: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9586:
9587: return "$num1:$num2";
9588: }
9589: }
9590:
9591: sub rndseed_64bit4 {
9592: my ($symb,$courseid,$domain,$username)=@_;
9593: {
9594: use integer;
9595: # strings need to be an even # of cahracters long, it it is odd the
9596: # last characters gets thrown away
9597: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9598: my $symbseed=numval3($symb) << 10;
9599: my $namechck=unpack("%32S*",$username.' ');
9600:
9601: my $nameseed=numval3($username) << 21;
9602: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9603: my $courseseed=unpack("%32S*",$courseid.' ');
9604:
9605: my $num1=$symbchck+$symbseed+$namechck;
9606: my $num2=$nameseed+$domainseed+$courseseed;
9607: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9608: #&logthis("rndseed :$num1:$num2:$_64bit");
9609: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9610:
9611: return "$num1:$num2";
9612: }
9613: }
9614:
9615: sub rndseed_64bit5 {
9616: my ($symb,$courseid,$domain,$username)=@_;
9617: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9618: return "$num1:$num2";
9619: }
9620:
9621: sub rndseed_CODE_64bit {
9622: my ($symb,$courseid,$domain,$username)=@_;
9623: {
9624: use integer;
9625: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9626: my $symbseed=numval2($symb);
9627: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9628: my $CODEseed=numval(&getCODE());
9629: my $courseseed=unpack("%32S*",$courseid.' ');
9630: my $num1=$symbseed+$CODEchck;
9631: my $num2=$CODEseed+$courseseed+$symbchck;
9632: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9633: #&logthis("rndseed :$num1:$num2:$symb");
9634: if ($_64bit) { $num1=(($num1<<32)>>32); }
9635: if ($_64bit) { $num2=(($num2<<32)>>32); }
9636: return "$num1:$num2";
9637: }
9638: }
9639:
9640: sub rndseed_CODE_64bit4 {
9641: my ($symb,$courseid,$domain,$username)=@_;
9642: {
9643: use integer;
9644: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9645: my $symbseed=numval3($symb);
9646: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9647: my $CODEseed=numval3(&getCODE());
9648: my $courseseed=unpack("%32S*",$courseid.' ');
9649: my $num1=$symbseed+$CODEchck;
9650: my $num2=$CODEseed+$courseseed+$symbchck;
9651: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9652: #&logthis("rndseed :$num1:$num2:$symb");
9653: if ($_64bit) { $num1=(($num1<<32)>>32); }
9654: if ($_64bit) { $num2=(($num2<<32)>>32); }
9655: return "$num1:$num2";
9656: }
9657: }
9658:
9659: sub rndseed_CODE_64bit5 {
9660: my ($symb,$courseid,$domain,$username)=@_;
9661: my $code = &getCODE();
9662: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9663: return "$num1:$num2";
9664: }
9665:
9666: sub setup_random_from_rndseed {
9667: my ($rndseed)=@_;
9668: if ($rndseed =~/([,:])/) {
9669: my ($num1,$num2)=split(/[,:]/,$rndseed);
9670: &Math::Random::random_set_seed(abs($num1),abs($num2));
9671: } else {
9672: &Math::Random::random_set_seed_from_phrase($rndseed);
9673: }
9674: }
9675:
9676: sub latest_receipt_algorithm_id {
9677: return 'receipt3';
9678: }
9679:
9680: sub recunique {
9681: my $fucourseid=shift;
9682: my $unique;
9683: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9684: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9685: $unique=$env{"course.$fucourseid.internal.encseed"};
9686: } else {
9687: $unique=$perlvar{'lonReceipt'};
9688: }
9689: return unpack("%32C*",$unique);
9690: }
9691:
9692: sub recprefix {
9693: my $fucourseid=shift;
9694: my $prefix;
9695: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9696: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9697: $prefix=$env{"course.$fucourseid.internal.encpref"};
9698: } else {
9699: $prefix=$perlvar{'lonHostID'};
9700: }
9701: return unpack("%32C*",$prefix);
9702: }
9703:
9704: sub ireceipt {
9705: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9706:
9707: my $return =&recprefix($fucourseid).'-';
9708:
9709: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9710: $env{'request.state'} eq 'construct') {
9711: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9712: return $return;
9713: }
9714:
9715: my $cuname=unpack("%32C*",$funame);
9716: my $cudom=unpack("%32C*",$fudom);
9717: my $cucourseid=unpack("%32C*",$fucourseid);
9718: my $cusymb=unpack("%32C*",$fusymb);
9719: my $cunique=&recunique($fucourseid);
9720: my $cpart=unpack("%32S*",$part);
9721: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9722:
9723: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9724:
9725: $return.= ($cunique%$cuname+
9726: $cunique%$cudom+
9727: $cusymb%$cuname+
9728: $cusymb%$cudom+
9729: $cucourseid%$cuname+
9730: $cucourseid%$cudom+
9731: $cpart%$cuname+
9732: $cpart%$cudom);
9733: } else {
9734: $return.= ($cunique%$cuname+
9735: $cunique%$cudom+
9736: $cusymb%$cuname+
9737: $cusymb%$cudom+
9738: $cucourseid%$cuname+
9739: $cucourseid%$cudom);
9740: }
9741: return $return;
9742: }
9743:
9744: sub receipt {
9745: my ($part)=@_;
9746: my ($symb,$courseid,$domain,$name) = &whichuser();
9747: return &ireceipt($name,$domain,$courseid,$symb,$part);
9748: }
9749:
9750: sub whichuser {
9751: my ($passedsymb)=@_;
9752: my ($symb,$courseid,$domain,$name,$publicuser);
9753: if (defined($env{'form.grade_symb'})) {
9754: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9755: my $allowed=&allowed('vgr',$tmp_courseid);
9756: if (!$allowed &&
9757: exists($env{'request.course.sec'}) &&
9758: $env{'request.course.sec'} !~ /^\s*$/) {
9759: $allowed=&allowed('vgr',$tmp_courseid.
9760: '/'.$env{'request.course.sec'});
9761: }
9762: if ($allowed) {
9763: ($symb)=&get_env_multiple('form.grade_symb');
9764: $courseid=$tmp_courseid;
9765: ($domain)=&get_env_multiple('form.grade_domain');
9766: ($name)=&get_env_multiple('form.grade_username');
9767: return ($symb,$courseid,$domain,$name,$publicuser);
9768: }
9769: }
9770: if (!$passedsymb) {
9771: $symb=&symbread();
9772: } else {
9773: $symb=$passedsymb;
9774: }
9775: $courseid=$env{'request.course.id'};
9776: $domain=$env{'user.domain'};
9777: $name=$env{'user.name'};
9778: if ($name eq 'public' && $domain eq 'public') {
9779: if (!defined($env{'form.username'})) {
9780: $env{'form.username'}.=time.rand(10000000);
9781: }
9782: $name.=$env{'form.username'};
9783: }
9784: return ($symb,$courseid,$domain,$name,$publicuser);
9785:
9786: }
9787:
9788: # ------------------------------------------------------------ Serves up a file
9789: # returns either the contents of the file or
9790: # -1 if the file doesn't exist
9791: #
9792: # if the target is a file that was uploaded via DOCS,
9793: # a check will be made to see if a current copy exists on the local server,
9794: # if it does this will be served, otherwise a copy will be retrieved from
9795: # the home server for the course and stored in /home/httpd/html/userfiles on
9796: # the local server.
9797:
9798: sub getfile {
9799: my ($file) = @_;
9800: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9801: &repcopy($file);
9802: return &readfile($file);
9803: }
9804:
9805: sub repcopy_userfile {
9806: my ($file)=@_;
9807: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9808: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9809: my ($cdom,$cnum,$filename) =
9810: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9811: my $uri="/uploaded/$cdom/$cnum/$filename";
9812: if (-e "$file") {
9813: # we already have a local copy, check it out
9814: my @fileinfo = stat($file);
9815: my $rtncode;
9816: my $info;
9817: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9818: if ($lwpresp ne 'ok') {
9819: # there is no such file anymore, even though we had a local copy
9820: if ($rtncode eq '404') {
9821: unlink($file);
9822: }
9823: return -1;
9824: }
9825: if ($info < $fileinfo[9]) {
9826: # nice, the file we have is up-to-date, just say okay
9827: return 'ok';
9828: } else {
9829: # the file is outdated, get rid of it
9830: unlink($file);
9831: }
9832: }
9833: # one way or the other, at this point, we don't have the file
9834: # construct the correct path for the file
9835: my @parts = ($cdom,$cnum);
9836: if ($filename =~ m|^(.+)/[^/]+$|) {
9837: push @parts, split(/\//,$1);
9838: }
9839: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9840: foreach my $part (@parts) {
9841: $path .= '/'.$part;
9842: if (!-e $path) {
9843: mkdir($path,0770);
9844: }
9845: }
9846: # now the path exists for sure
9847: # get a user agent
9848: my $ua=new LWP::UserAgent;
9849: my $transferfile=$file.'.in.transfer';
9850: # FIXME: this should flock
9851: if (-e $transferfile) { return 'ok'; }
9852: my $request;
9853: $uri=~s/^\///;
9854: my $homeserver = &homeserver($cnum,$cdom);
9855: my $protocol = $protocol{$homeserver};
9856: $protocol = 'http' if ($protocol ne 'https');
9857: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9858: my $response=$ua->request($request,$transferfile);
9859: # did it work?
9860: if ($response->is_error()) {
9861: unlink($transferfile);
9862: &logthis("Userfile repcopy failed for $uri");
9863: return -1;
9864: }
9865: # worked, rename the transfer file
9866: rename($transferfile,$file);
9867: return 'ok';
9868: }
9869:
9870: sub tokenwrapper {
9871: my $uri=shift;
9872: $uri=~s|^https?\://([^/]+)||;
9873: $uri=~s|^/||;
9874: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9875: my $token=$1;
9876: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9877: if ($udom && $uname && $file) {
9878: $file=~s|(\?\.*)*$||;
9879: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9880: my $homeserver = &homeserver($uname,$udom);
9881: my $protocol = $protocol{$homeserver};
9882: $protocol = 'http' if ($protocol ne 'https');
9883: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9884: (($uri=~/\?/)?'&':'?').'token='.$token.
9885: '&tokenissued='.$perlvar{'lonHostID'};
9886: } else {
9887: return '/adm/notfound.html';
9888: }
9889: }
9890:
9891: # call with reqtype HEAD: get last modification time
9892: # call with reqtype GET: get the file contents
9893: # Do not call this with reqtype GET for large files! It loads everything into memory
9894: #
9895: sub getuploaded {
9896: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9897: $uri=~s/^\///;
9898: my $homeserver = &homeserver($cnum,$cdom);
9899: my $protocol = $protocol{$homeserver};
9900: $protocol = 'http' if ($protocol ne 'https');
9901: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9902: my $ua=new LWP::UserAgent;
9903: my $request=new HTTP::Request($reqtype,$uri);
9904: my $response=$ua->request($request);
9905: $$rtncode = $response->code;
9906: if (! $response->is_success()) {
9907: return 'failed';
9908: }
9909: if ($reqtype eq 'HEAD') {
9910: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9911: } elsif ($reqtype eq 'GET') {
9912: $$info = $response->content;
9913: }
9914: return 'ok';
9915: }
9916:
9917: sub readfile {
9918: my $file = shift;
9919: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9920: my $fh;
9921: open($fh,"<$file");
9922: my $a='';
9923: while (my $line = <$fh>) { $a .= $line; }
9924: return $a;
9925: }
9926:
9927: sub filelocation {
9928: my ($dir,$file) = @_;
9929: my $location;
9930: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9931:
9932: if ($file =~ m-^/adm/-) {
9933: $file=~s-^/adm/wrapper/-/-;
9934: $file=~s-^/adm/coursedocs/showdoc/-/-;
9935: }
9936:
9937: if ($file=~m:^/~:) { # is a contruction space reference
9938: $location = $file;
9939: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9940: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9941: # is a correct contruction space reference
9942: $location = $file;
9943: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9944: $location = $file;
9945: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9946: my ($udom,$uname,$filename)=
9947: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9948: my $home=&homeserver($uname,$udom);
9949: my $is_me=0;
9950: my @ids=¤t_machine_ids();
9951: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9952: if ($is_me) {
9953: $location=propath($udom,$uname).'/userfiles/'.$filename;
9954: } else {
9955: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9956: $udom.'/'.$uname.'/'.$filename;
9957: }
9958: } elsif ($file =~ m-^/adm/-) {
9959: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9960: } else {
9961: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9962: $file=~s:^/res/:/:;
9963: if ( !( $file =~ m:^/:) ) {
9964: $location = $dir. '/'.$file;
9965: } else {
9966: $location = '/home/httpd/html/res'.$file;
9967: }
9968: }
9969: $location=~s://+:/:g; # remove duplicate /
9970: while ($location=~m{/\.\./}) {
9971: if ($location =~ m{/[^/]+/\.\./}) {
9972: $location=~ s{/[^/]+/\.\./}{/}g;
9973: } else {
9974: $location=~ s{/\.\./}{/}g;
9975: }
9976: } #remove dir/..
9977: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9978: return $location;
9979: }
9980:
9981: sub hreflocation {
9982: my ($dir,$file)=@_;
9983: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9984: $file=filelocation($dir,$file);
9985: } elsif ($file=~m-^/adm/-) {
9986: $file=~s-^/adm/wrapper/-/-;
9987: $file=~s-^/adm/coursedocs/showdoc/-/-;
9988: }
9989: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9990: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9991: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9992: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9993: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9994: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9995: -/uploaded/$1/$2/-x;
9996: }
9997: if ($file=~ m{^/userfiles/}) {
9998: $file =~ s{^/userfiles/}{/uploaded/};
9999: }
10000: return $file;
10001: }
10002:
10003: sub current_machine_domains {
10004: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10005: }
10006:
10007: sub machine_domains {
10008: my ($hostname) = @_;
10009: my @domains;
10010: my %hostname = &all_hostnames();
10011: while( my($id, $name) = each(%hostname)) {
10012: # &logthis("-$id-$name-$hostname-");
10013: if ($hostname eq $name) {
10014: push(@domains,&host_domain($id));
10015: }
10016: }
10017: return @domains;
10018: }
10019:
10020: sub current_machine_ids {
10021: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10022: }
10023:
10024: sub machine_ids {
10025: my ($hostname) = @_;
10026: $hostname ||= &hostname($perlvar{'lonHostID'});
10027: my @ids;
10028: my %name_to_host = &all_names();
10029: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10030: return @{ $name_to_host{$hostname} };
10031: }
10032: return;
10033: }
10034:
10035: sub additional_machine_domains {
10036: my @domains;
10037: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10038: while( my $line = <$fh>) {
10039: $line =~ s/\s//g;
10040: push(@domains,$line);
10041: }
10042: return @domains;
10043: }
10044:
10045: sub default_login_domain {
10046: my $domain = $perlvar{'lonDefDomain'};
10047: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10048: foreach my $posdom (¤t_machine_domains(),
10049: &additional_machine_domains()) {
10050: if (lc($posdom) eq lc($testdomain)) {
10051: $domain=$posdom;
10052: last;
10053: }
10054: }
10055: return $domain;
10056: }
10057:
10058: # ------------------------------------------------------------- Declutters URLs
10059:
10060: sub declutter {
10061: my $thisfn=shift;
10062: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10063: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10064: $thisfn=~s/^\///;
10065: $thisfn=~s|^adm/wrapper/||;
10066: $thisfn=~s|^adm/coursedocs/showdoc/||;
10067: $thisfn=~s/^res\///;
10068: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10069: $thisfn=~s/\?.+$//;
10070: }
10071: return $thisfn;
10072: }
10073:
10074: # ------------------------------------------------------------- Clutter up URLs
10075:
10076: sub clutter {
10077: my $thisfn='/'.&declutter(shift);
10078: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10079: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10080: $thisfn='/res'.$thisfn;
10081: }
10082: if ($thisfn !~m|^/adm|) {
10083: if ($thisfn =~ m|^/ext/|) {
10084: $thisfn='/adm/wrapper'.$thisfn;
10085: } else {
10086: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10087: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10088: if ($embstyle eq 'ssi'
10089: || ($embstyle eq 'hdn')
10090: || ($embstyle eq 'rat')
10091: || ($embstyle eq 'prv')
10092: || ($embstyle eq 'ign')) {
10093: #do nothing with these
10094: } elsif (($embstyle eq 'img')
10095: || ($embstyle eq 'emb')
10096: || ($embstyle eq 'wrp')) {
10097: $thisfn='/adm/wrapper'.$thisfn;
10098: } elsif ($embstyle eq 'unk'
10099: && $thisfn!~/\.(sequence|page)$/) {
10100: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10101: } else {
10102: # &logthis("Got a blank emb style");
10103: }
10104: }
10105: }
10106: return $thisfn;
10107: }
10108:
10109: sub clutter_with_no_wrapper {
10110: my $uri = &clutter(shift);
10111: if ($uri =~ m-^/adm/-) {
10112: $uri =~ s-^/adm/wrapper/-/-;
10113: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10114: }
10115: return $uri;
10116: }
10117:
10118: sub freeze_escape {
10119: my ($value)=@_;
10120: if (ref($value)) {
10121: $value=&nfreeze($value);
10122: return '__FROZEN__'.&escape($value);
10123: }
10124: return &escape($value);
10125: }
10126:
10127:
10128: sub thaw_unescape {
10129: my ($value)=@_;
10130: if ($value =~ /^__FROZEN__/) {
10131: substr($value,0,10,undef);
10132: $value=&unescape($value);
10133: return &thaw($value);
10134: }
10135: return &unescape($value);
10136: }
10137:
10138: sub correct_line_ends {
10139: my ($result)=@_;
10140: $$result =~s/\r\n/\n/mg;
10141: $$result =~s/\r/\n/mg;
10142: }
10143: # ================================================================ Main Program
10144:
10145: sub goodbye {
10146: &logthis("Starting Shut down");
10147: #not converted to using infrastruture and probably shouldn't be
10148: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10149: #converted
10150: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10151: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10152: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10153: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10154: #1.1 only
10155: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10156: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10157: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10158: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10159: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10160: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10161: &logthis(sprintf("%-20s is %s",'hits',$hits));
10162: &flushcourselogs();
10163: &logthis("Shutting down");
10164: }
10165:
10166: sub get_dns {
10167: my ($url,$func,$ignore_cache) = @_;
10168: if (!$ignore_cache) {
10169: my ($content,$cached)=
10170: &Apache::lonnet::is_cached_new('dns',$url);
10171: if ($cached) {
10172: &$func($content);
10173: return;
10174: }
10175: }
10176:
10177: my %alldns;
10178: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10179: foreach my $dns (<$config>) {
10180: next if ($dns !~ /^\^(\S*)/x);
10181: my $line = $1;
10182: my ($host,$protocol) = split(/:/,$line);
10183: if ($protocol ne 'https') {
10184: $protocol = 'http';
10185: }
10186: $alldns{$host} = $protocol;
10187: }
10188: while (%alldns) {
10189: my ($dns) = keys(%alldns);
10190: my $ua=new LWP::UserAgent;
10191: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10192: my $response=$ua->request($request);
10193: delete($alldns{$dns});
10194: next if ($response->is_error());
10195: my @content = split("\n",$response->content);
10196: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10197: &$func(\@content);
10198: return;
10199: }
10200: close($config);
10201: my $which = (split('/',$url))[3];
10202: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10203: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10204: my @content = <$config>;
10205: &$func(\@content);
10206: return;
10207: }
10208: # ------------------------------------------------------------ Read domain file
10209: {
10210: my $loaded;
10211: my %domain;
10212:
10213: sub parse_domain_tab {
10214: my ($lines) = @_;
10215: foreach my $line (@$lines) {
10216: next if ($line =~ /^(\#|\s*$ )/x);
10217:
10218: chomp($line);
10219: my ($name,@elements) = split(/:/,$line,9);
10220: my %this_domain;
10221: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10222: 'lang_def', 'city', 'longi', 'lati',
10223: 'primary') {
10224: $this_domain{$field} = shift(@elements);
10225: }
10226: $domain{$name} = \%this_domain;
10227: }
10228: }
10229:
10230: sub reset_domain_info {
10231: undef($loaded);
10232: undef(%domain);
10233: }
10234:
10235: sub load_domain_tab {
10236: my ($ignore_cache) = @_;
10237: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10238: my $fh;
10239: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10240: my @lines = <$fh>;
10241: &parse_domain_tab(\@lines);
10242: }
10243: close($fh);
10244: $loaded = 1;
10245: }
10246:
10247: sub domain {
10248: &load_domain_tab() if (!$loaded);
10249:
10250: my ($name,$what) = @_;
10251: return if ( !exists($domain{$name}) );
10252:
10253: if (!$what) {
10254: return $domain{$name}{'description'};
10255: }
10256: return $domain{$name}{$what};
10257: }
10258:
10259: sub domain_info {
10260: &load_domain_tab() if (!$loaded);
10261: return %domain;
10262: }
10263:
10264: }
10265:
10266:
10267: # ------------------------------------------------------------- Read hosts file
10268: {
10269: my %hostname;
10270: my %hostdom;
10271: my %libserv;
10272: my $loaded;
10273: my %name_to_host;
10274: my %internetdom;
10275: my %LC_dns_serv;
10276:
10277: sub parse_hosts_tab {
10278: my ($file) = @_;
10279: foreach my $configline (@$file) {
10280: next if ($configline =~ /^(\#|\s*$ )/x);
10281: chomp($configline);
10282: if ($configline =~ /^\^/) {
10283: if ($configline =~ /^\^([\w.\-]+)/) {
10284: $LC_dns_serv{$1} = 1;
10285: }
10286: next;
10287: }
10288: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10289: $name=~s/\s//g;
10290: if ($id && $domain && $role && $name) {
10291: $hostname{$id}=$name;
10292: push(@{$name_to_host{$name}}, $id);
10293: $hostdom{$id}=$domain;
10294: if ($role eq 'library') { $libserv{$id}=$name; }
10295: if (defined($protocol)) {
10296: if ($protocol eq 'https') {
10297: $protocol{$id} = $protocol;
10298: } else {
10299: $protocol{$id} = 'http';
10300: }
10301: } else {
10302: $protocol{$id} = 'http';
10303: }
10304: if (defined($intdom)) {
10305: $internetdom{$id} = $intdom;
10306: }
10307: }
10308: }
10309: }
10310:
10311: sub reset_hosts_info {
10312: &purge_remembered();
10313: &reset_domain_info();
10314: &reset_hosts_ip_info();
10315: undef(%name_to_host);
10316: undef(%hostname);
10317: undef(%hostdom);
10318: undef(%libserv);
10319: undef($loaded);
10320: }
10321:
10322: sub load_hosts_tab {
10323: my ($ignore_cache) = @_;
10324: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10325: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10326: my @config = <$config>;
10327: &parse_hosts_tab(\@config);
10328: close($config);
10329: $loaded=1;
10330: }
10331:
10332: sub hostname {
10333: &load_hosts_tab() if (!$loaded);
10334:
10335: my ($lonid) = @_;
10336: return $hostname{$lonid};
10337: }
10338:
10339: sub all_hostnames {
10340: &load_hosts_tab() if (!$loaded);
10341:
10342: return %hostname;
10343: }
10344:
10345: sub all_names {
10346: &load_hosts_tab() if (!$loaded);
10347:
10348: return %name_to_host;
10349: }
10350:
10351: sub all_host_domain {
10352: &load_hosts_tab() if (!$loaded);
10353: return %hostdom;
10354: }
10355:
10356: sub is_library {
10357: &load_hosts_tab() if (!$loaded);
10358:
10359: return exists($libserv{$_[0]});
10360: }
10361:
10362: sub all_library {
10363: &load_hosts_tab() if (!$loaded);
10364:
10365: return %libserv;
10366: }
10367:
10368: sub unique_library {
10369: #2x reverse removes all hostnames that appear more than once
10370: my %unique = reverse &all_library();
10371: return reverse %unique;
10372: }
10373:
10374: sub get_servers {
10375: &load_hosts_tab() if (!$loaded);
10376:
10377: my ($domain,$type) = @_;
10378: my %possible_hosts = ($type eq 'library') ? %libserv
10379: : %hostname;
10380: my %result;
10381: if (ref($domain) eq 'ARRAY') {
10382: while ( my ($host,$hostname) = each(%possible_hosts)) {
10383: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10384: $result{$host} = $hostname;
10385: }
10386: }
10387: } else {
10388: while ( my ($host,$hostname) = each(%possible_hosts)) {
10389: if ($hostdom{$host} eq $domain) {
10390: $result{$host} = $hostname;
10391: }
10392: }
10393: }
10394: return %result;
10395: }
10396:
10397: sub get_unique_servers {
10398: my %unique = reverse &get_servers(@_);
10399: return reverse %unique;
10400: }
10401:
10402: sub host_domain {
10403: &load_hosts_tab() if (!$loaded);
10404:
10405: my ($lonid) = @_;
10406: return $hostdom{$lonid};
10407: }
10408:
10409: sub all_domains {
10410: &load_hosts_tab() if (!$loaded);
10411:
10412: my %seen;
10413: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10414: return @uniq;
10415: }
10416:
10417: sub internet_dom {
10418: &load_hosts_tab() if (!$loaded);
10419:
10420: my ($lonid) = @_;
10421: return $internetdom{$lonid};
10422: }
10423:
10424: sub is_LC_dns {
10425: &load_hosts_tab() if (!$loaded);
10426:
10427: my ($hostname) = @_;
10428: return exists($LC_dns_serv{$hostname});
10429: }
10430:
10431: }
10432:
10433: {
10434: my %iphost;
10435: my %name_to_ip;
10436: my %lonid_to_ip;
10437:
10438: sub get_hosts_from_ip {
10439: my ($ip) = @_;
10440: my %iphosts = &get_iphost();
10441: if (ref($iphosts{$ip})) {
10442: return @{$iphosts{$ip}};
10443: }
10444: return;
10445: }
10446:
10447: sub reset_hosts_ip_info {
10448: undef(%iphost);
10449: undef(%name_to_ip);
10450: undef(%lonid_to_ip);
10451: }
10452:
10453: sub get_host_ip {
10454: my ($lonid) = @_;
10455: if (exists($lonid_to_ip{$lonid})) {
10456: return $lonid_to_ip{$lonid};
10457: }
10458: my $name=&hostname($lonid);
10459: my $ip = gethostbyname($name);
10460: return if (!$ip || length($ip) ne 4);
10461: $ip=inet_ntoa($ip);
10462: $name_to_ip{$name} = $ip;
10463: $lonid_to_ip{$lonid} = $ip;
10464: return $ip;
10465: }
10466:
10467: sub get_iphost {
10468: my ($ignore_cache) = @_;
10469:
10470: if (!$ignore_cache) {
10471: if (%iphost) {
10472: return %iphost;
10473: }
10474: my ($ip_info,$cached)=
10475: &Apache::lonnet::is_cached_new('iphost','iphost');
10476: if ($cached) {
10477: %iphost = %{$ip_info->[0]};
10478: %name_to_ip = %{$ip_info->[1]};
10479: %lonid_to_ip = %{$ip_info->[2]};
10480: return %iphost;
10481: }
10482: }
10483:
10484: # get yesterday's info for fallback
10485: my %old_name_to_ip;
10486: my ($ip_info,$cached)=
10487: &Apache::lonnet::is_cached_new('iphost','iphost');
10488: if ($cached) {
10489: %old_name_to_ip = %{$ip_info->[1]};
10490: }
10491:
10492: my %name_to_host = &all_names();
10493: foreach my $name (keys(%name_to_host)) {
10494: my $ip;
10495: if (!exists($name_to_ip{$name})) {
10496: $ip = gethostbyname($name);
10497: if (!$ip || length($ip) ne 4) {
10498: if (defined($old_name_to_ip{$name})) {
10499: $ip = $old_name_to_ip{$name};
10500: &logthis("Can't find $name defaulting to old $ip");
10501: } else {
10502: &logthis("Name $name no IP found");
10503: next;
10504: }
10505: } else {
10506: $ip=inet_ntoa($ip);
10507: }
10508: $name_to_ip{$name} = $ip;
10509: } else {
10510: $ip = $name_to_ip{$name};
10511: }
10512: foreach my $id (@{ $name_to_host{$name} }) {
10513: $lonid_to_ip{$id} = $ip;
10514: }
10515: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10516: }
10517: &Apache::lonnet::do_cache_new('iphost','iphost',
10518: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10519: 48*60*60);
10520:
10521: return %iphost;
10522: }
10523:
10524: #
10525: # Given a DNS returns the loncapa host name for that DNS
10526: #
10527: sub host_from_dns {
10528: my ($dns) = @_;
10529: my @hosts;
10530: my $ip;
10531:
10532: if (exists($name_to_ip{$dns})) {
10533: $ip = $name_to_ip{$dns};
10534: }
10535: if (!$ip) {
10536: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10537: if (length($ip) == 4) {
10538: $ip = &IO::Socket::inet_ntoa($ip);
10539: }
10540: }
10541: if ($ip) {
10542: @hosts = get_hosts_from_ip($ip);
10543: return $hosts[0];
10544: }
10545: return undef;
10546: }
10547:
10548: sub get_internet_names {
10549: my ($lonid) = @_;
10550: return if ($lonid eq '');
10551: my ($idnref,$cached)=
10552: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10553: if ($cached) {
10554: return $idnref;
10555: }
10556: my $ip = &get_host_ip($lonid);
10557: my @hosts = &get_hosts_from_ip($ip);
10558: my %iphost = &get_iphost();
10559: my (@idns,%seen);
10560: foreach my $id (@hosts) {
10561: my $dom = &host_domain($id);
10562: my $prim_id = &domain($dom,'primary');
10563: my $prim_ip = &get_host_ip($prim_id);
10564: next if ($seen{$prim_ip});
10565: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10566: foreach my $id (@{$iphost{$prim_ip}}) {
10567: my $intdom = &internet_dom($id);
10568: unless (grep(/^\Q$intdom\E$/,@idns)) {
10569: push(@idns,$intdom);
10570: }
10571: }
10572: }
10573: $seen{$prim_ip} = 1;
10574: }
10575: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10576: }
10577:
10578: }
10579:
10580: sub all_loncaparevs {
10581: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10582: }
10583:
10584: BEGIN {
10585:
10586: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10587: unless ($readit) {
10588: {
10589: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10590: %perlvar = (%perlvar,%{$configvars});
10591: }
10592:
10593:
10594: # ------------------------------------------------------ Read spare server file
10595: {
10596: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10597:
10598: while (my $configline=<$config>) {
10599: chomp($configline);
10600: if ($configline) {
10601: my ($host,$type) = split(':',$configline,2);
10602: if (!defined($type) || $type eq '') { $type = 'default' };
10603: push(@{ $spareid{$type} }, $host);
10604: }
10605: }
10606: close($config);
10607: }
10608: # ------------------------------------------------------------ Read permissions
10609: {
10610: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10611:
10612: while (my $configline=<$config>) {
10613: chomp($configline);
10614: if ($configline) {
10615: my ($role,$perm)=split(/ /,$configline);
10616: if ($perm ne '') { $pr{$role}=$perm; }
10617: }
10618: }
10619: close($config);
10620: }
10621:
10622: # -------------------------------------------- Read plain texts for permissions
10623: {
10624: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10625:
10626: while (my $configline=<$config>) {
10627: chomp($configline);
10628: if ($configline) {
10629: my ($short,@plain)=split(/:/,$configline);
10630: %{$prp{$short}} = ();
10631: if (@plain > 0) {
10632: $prp{$short}{'std'} = $plain[0];
10633: for (my $i=1; $i<@plain; $i++) {
10634: $prp{$short}{'alt'.$i} = $plain[$i];
10635: }
10636: }
10637: }
10638: }
10639: close($config);
10640: }
10641:
10642: # ---------------------------------------------------------- Read package table
10643: {
10644: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10645:
10646: while (my $configline=<$config>) {
10647: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10648: chomp($configline);
10649: my ($short,$plain)=split(/:/,$configline);
10650: my ($pack,$name)=split(/\&/,$short);
10651: if ($plain ne '') {
10652: $packagetab{$pack.'&'.$name.'&name'}=$name;
10653: $packagetab{$short}=$plain;
10654: }
10655: }
10656: close($config);
10657: }
10658:
10659: # ---------------------------------------------------------- Read loncaparev table
10660: {
10661: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10662: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10663: while (my $configline=<$config>) {
10664: chomp($configline);
10665: my ($hostid,$loncaparev)=split(/:/,$configline);
10666: $loncaparevs{$hostid}=$loncaparev;
10667: }
10668: close($config);
10669: }
10670: }
10671: }
10672:
10673: # ---------------------------------------------------------- Read serverhostID table
10674: {
10675: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10676: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10677: while (my $configline=<$config>) {
10678: chomp($configline);
10679: my ($name,$id)=split(/:/,$configline);
10680: $serverhomeIDs{$name}=$id;
10681: }
10682: close($config);
10683: }
10684: }
10685: }
10686:
10687: {
10688: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10689: if (-e $file) {
10690: my $parser = HTML::LCParser->new($file);
10691: while (my $token = $parser->get_token()) {
10692: if ($token->[0] eq 'S') {
10693: my $item = $token->[1];
10694: my $name = $token->[2]{'name'};
10695: my $value = $token->[2]{'value'};
10696: if ($item ne '' && $name ne '' && $value ne '') {
10697: my $release = $parser->get_text();
10698: $release =~ s/(^\s*|\s*$ )//gx;
10699: $needsrelease{$item.':'.$name.':'.$value} = $release;
10700: }
10701: }
10702: }
10703: }
10704: }
10705:
10706: # ------------- set up temporary directory
10707: {
10708: $tmpdir = LONCAPA::tempdir();
10709:
10710: }
10711:
10712: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10713: 'compress_threshold'=> 20_000,
10714: });
10715:
10716: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10717: $dumpcount=0;
10718: $locknum=0;
10719:
10720: &logtouch();
10721: &logthis('<font color="yellow">INFO: Read configuration</font>');
10722: $readit=1;
10723: {
10724: use integer;
10725: my $test=(2**32)+1;
10726: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10727: &logthis(" Detected 64bit platform ($_64bit)");
10728: }
10729: }
10730: }
10731:
10732: 1;
10733: __END__
10734:
10735: =pod
10736:
10737: =head1 NAME
10738:
10739: Apache::lonnet - Subroutines to ask questions about things in the network.
10740:
10741: =head1 SYNOPSIS
10742:
10743: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10744:
10745: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10746:
10747: Common parameters:
10748:
10749: =over 4
10750:
10751: =item *
10752:
10753: $uname : an internal username (if $cname expecting a course Id specifically)
10754:
10755: =item *
10756:
10757: $udom : a domain (if $cdom expecting a course's domain specifically)
10758:
10759: =item *
10760:
10761: $symb : a resource instance identifier
10762:
10763: =item *
10764:
10765: $namespace : the name of a .db file that contains the data needed or
10766: being set.
10767:
10768: =back
10769:
10770: =head1 OVERVIEW
10771:
10772: lonnet provides subroutines which interact with the
10773: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10774: about classes, users, and resources.
10775:
10776: For many of these objects you can also use this to store data about
10777: them or modify them in various ways.
10778:
10779: =head2 Symbs
10780:
10781: To identify a specific instance of a resource, LON-CAPA uses symbols
10782: or "symbs"X<symb>. These identifiers are built from the URL of the
10783: map, the resource number of the resource in the map, and the URL of
10784: the resource itself. The latter is somewhat redundant, but might help
10785: if maps change.
10786:
10787: An example is
10788:
10789: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10790:
10791: The respective map entry is
10792:
10793: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10794: title="Problem 2">
10795: </resource>
10796:
10797: Symbs are used by the random number generator, as well as to store and
10798: restore data specific to a certain instance of for example a problem.
10799:
10800: =head2 Storing And Retrieving Data
10801:
10802: X<store()>X<cstore()>X<restore()>Three of the most important functions
10803: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10804: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10805: is is the non-critical message twin of cstore. These functions are for
10806: handlers to store a perl hash to a user's permanent data space in an
10807: easy manner, and to retrieve it again on another call. It is expected
10808: that a handler would use this once at the beginning to retrieve data,
10809: and then again once at the end to send only the new data back.
10810:
10811: The data is stored in the user's data directory on the user's
10812: homeserver under the ID of the course.
10813:
10814: The hash that is returned by restore will have all of the previous
10815: value for all of the elements of the hash.
10816:
10817: Example:
10818:
10819: #creating a hash
10820: my %hash;
10821: $hash{'foo'}='bar';
10822:
10823: #storing it
10824: &Apache::lonnet::cstore(\%hash);
10825:
10826: #changing a value
10827: $hash{'foo'}='notbar';
10828:
10829: #adding a new value
10830: $hash{'bar'}='foo';
10831: &Apache::lonnet::cstore(\%hash);
10832:
10833: #retrieving the hash
10834: my %history=&Apache::lonnet::restore();
10835:
10836: #print the hash
10837: foreach my $key (sort(keys(%history))) {
10838: print("\%history{$key} = $history{$key}");
10839: }
10840:
10841: Will print out:
10842:
10843: %history{1:foo} = bar
10844: %history{1:keys} = foo:timestamp
10845: %history{1:timestamp} = 990455579
10846: %history{2:bar} = foo
10847: %history{2:foo} = notbar
10848: %history{2:keys} = foo:bar:timestamp
10849: %history{2:timestamp} = 990455580
10850: %history{bar} = foo
10851: %history{foo} = notbar
10852: %history{timestamp} = 990455580
10853: %history{version} = 2
10854:
10855: Note that the special hash entries C<keys>, C<version> and
10856: C<timestamp> were added to the hash. C<version> will be equal to the
10857: total number of versions of the data that have been stored. The
10858: C<timestamp> attribute will be the UNIX time the hash was
10859: stored. C<keys> is available in every historical section to list which
10860: keys were added or changed at a specific historical revision of a
10861: hash.
10862:
10863: B<Warning>: do not store the hash that restore returns directly. This
10864: will cause a mess since it will restore the historical keys as if the
10865: were new keys. I.E. 1:foo will become 1:1:foo etc.
10866:
10867: Calling convention:
10868:
10869: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10870: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10871:
10872: For more detailed information, see lonnet specific documentation.
10873:
10874: =head1 RETURN MESSAGES
10875:
10876: =over 4
10877:
10878: =item * B<con_lost>: unable to contact remote host
10879:
10880: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10881: when the connection is brought back up
10882:
10883: =item * B<con_failed>: unable to contact remote host and unable to save message
10884: for later delivery
10885:
10886: =item * B<error:>: an error a occurred, a description of the error follows the :
10887:
10888: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10889: that was requested
10890:
10891: =back
10892:
10893: =head1 PUBLIC SUBROUTINES
10894:
10895: =head2 Session Environment Functions
10896:
10897: =over 4
10898:
10899: =item *
10900: X<appenv()>
10901: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10902: the user envirnoment file, and will be restored for each access this
10903: user makes during this session, also modifies the %env for the current
10904: process. Optional rolesarrayref - if defined contains a reference to an array
10905: of roles which are exempt from the restriction on modifying user.role entries
10906: in the user's environment.db and in %env.
10907:
10908: =item *
10909: X<delenv()>
10910: B<delenv($delthis,$regexp)>: removes all items from the session
10911: environment file that begin with $delthis. If the
10912: optional second arg - $regexp - is true, $delthis is treated as a
10913: regular expression, otherwise \Q$delthis\E is used.
10914: The values are also deleted from the current processes %env.
10915:
10916: =item * get_env_multiple($name)
10917:
10918: gets $name from the %env hash, it seemlessly handles the cases where multiple
10919: values may be defined and end up as an array ref.
10920:
10921: returns an array of values
10922:
10923: =back
10924:
10925: =head2 User Information
10926:
10927: =over 4
10928:
10929: =item *
10930: X<queryauthenticate()>
10931: B<queryauthenticate($uname,$udom)>: try to determine user's current
10932: authentication scheme
10933:
10934: =item *
10935: X<authenticate()>
10936: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10937: authenticate user from domain's lib servers (first use the current
10938: one). C<$upass> should be the users password.
10939: $checkdefauth is optional (value is 1 if a check should be made to
10940: authenticate user using default authentication method, and allow
10941: account creation if username does not have account in the domain).
10942: $clientcancheckhost is optional (value is 1 if checking whether the
10943: server can host will occur on the client side in lonauth.pm).
10944:
10945: =item *
10946: X<homeserver()>
10947: B<homeserver($uname,$udom)>: find the server which has
10948: the user's directory and files (there must be only one), this caches
10949: the answer, and also caches if there is a borken connection.
10950:
10951: =item *
10952: X<idget()>
10953: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10954: (IDs are a unique resource in a domain, there must be only 1 ID per
10955: username, and only 1 username per ID in a specific domain) (returns
10956: hash: id=>name,id=>name)
10957:
10958: =item *
10959: X<idrget()>
10960: B<idrget($udom,@unames)>: find the IDs behind a list of
10961: usernames (returns hash: name=>id,name=>id)
10962:
10963: =item *
10964: X<idput()>
10965: B<idput($udom,%ids)>: store away a list of names and associated IDs
10966:
10967: =item *
10968: X<rolesinit()>
10969: B<rolesinit($udom,$username,$authhost)>: get user privileges
10970:
10971: =item *
10972: X<getsection()>
10973: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10974: course $cname, return section name/number or '' for "not in course"
10975: and '-1' for "no section"
10976:
10977: =item *
10978: X<userenvironment()>
10979: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10980: passed in @what from the requested user's environment, returns a hash
10981:
10982: =item *
10983: X<userlog_query()>
10984: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10985: activity.log file. %filters defines filters applied when parsing the
10986: log file. These can be start or end timestamps, or the type of action
10987: - log to look for Login or Logout events, check for Checkin or
10988: Checkout, role for role selection. The response is in the form
10989: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10990: escaped strings of the action recorded in the activity.log file.
10991:
10992: =back
10993:
10994: =head2 User Roles
10995:
10996: =over 4
10997:
10998: =item *
10999:
11000: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11001: F: full access
11002: U,I,K: authentication modes (cxx only)
11003: '': forbidden
11004: 1: user needs to choose course
11005: 2: browse allowed
11006: A: passphrase authentication needed
11007:
11008: =item *
11009:
11010: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11011: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11012: and course level
11013:
11014: =item *
11015:
11016: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11017: (rolesplain.tab); plain text explanation of a user role term.
11018: $type is Course (default) or Community.
11019: If $forcedefault evaluates to true, text returned will be default
11020: text for $type. Otherwise, if this is a course, the text returned
11021: will be a custom name for the role (if defined in the course's
11022: environment). If no custom name is defined the default is returned.
11023:
11024: =item *
11025:
11026: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11027: All arguments are optional. Returns a hash of a roles, either for
11028: co-author/assistant author roles for a user's Construction Space
11029: (default), or if $context is 'userroles', roles for the user himself,
11030: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11031: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11032: For each key, value is set to colon-separated start and end times for
11033: the role. If no username and domain are specified, will default to
11034: current user/domain. Types, roles, and roledoms are references to arrays
11035: of role statuses (active, future or previous), roles
11036: (e.g., cc,in, st etc.) and domains of the roles which can be used
11037: to restrict the list of roles reported. If no array ref is
11038: provided for types, will default to return only active roles.
11039:
11040: =back
11041:
11042: =head2 User Modification
11043:
11044: =over 4
11045:
11046: =item *
11047:
11048: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11049: user for the level given by URL. Optional start and end dates (leave empty
11050: string or zero for "no date")
11051:
11052: =item *
11053:
11054: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11055: change a users, password, possible return values are: ok,
11056: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11057: refused
11058:
11059: =item *
11060:
11061: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11062:
11063: =item *
11064:
11065: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11066: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11067:
11068: will update user information (firstname,middlename,lastname,generation,
11069: permanentemail), and if forceid is true, student/employee ID also.
11070: A user's institutional affiliation(s) can also be updated.
11071: User information fields will not be overwritten with empty entries
11072: unless the field is included in the $candelete array reference.
11073: This array is included when a single user is modified via "Manage Users",
11074: or when Autoupdate.pl is run by cron in a domain.
11075:
11076: =item *
11077:
11078: modifystudent
11079:
11080: modify a student's enrollment and identification information.
11081: The course id is resolved based on the current users environment.
11082: This means the envoking user must be a course coordinator or otherwise
11083: associated with a course.
11084:
11085: This call is essentially a wrapper for lonnet::modifyuser and
11086: lonnet::modify_student_enrollment
11087:
11088: Inputs:
11089:
11090: =over 4
11091:
11092: =item B<$udom> Student's loncapa domain
11093:
11094: =item B<$uname> Student's loncapa login name
11095:
11096: =item B<$uid> Student/Employee ID
11097:
11098: =item B<$umode> Student's authentication mode
11099:
11100: =item B<$upass> Student's password
11101:
11102: =item B<$first> Student's first name
11103:
11104: =item B<$middle> Student's middle name
11105:
11106: =item B<$last> Student's last name
11107:
11108: =item B<$gene> Student's generation
11109:
11110: =item B<$usec> Student's section in course
11111:
11112: =item B<$end> Unix time of the roles expiration
11113:
11114: =item B<$start> Unix time of the roles start date
11115:
11116: =item B<$forceid> If defined, allow $uid to be changed
11117:
11118: =item B<$desiredhome> server to use as home server for student
11119:
11120: =item B<$email> Student's permanent e-mail address
11121:
11122: =item B<$type> Type of enrollment (auto or manual)
11123:
11124: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11125:
11126: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11127:
11128: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11129:
11130: =item B<$context> role change context (shown in User Management Logs display in a course)
11131:
11132: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11133:
11134: =back
11135:
11136: =item *
11137:
11138: modify_student_enrollment
11139:
11140: Change a students enrollment status in a class. The environment variable
11141: 'role.request.course' must be defined for this function to proceed.
11142:
11143: Inputs:
11144:
11145: =over 4
11146:
11147: =item $udom, students domain
11148:
11149: =item $uname, students name
11150:
11151: =item $uid, students user id
11152:
11153: =item $first, students first name
11154:
11155: =item $middle
11156:
11157: =item $last
11158:
11159: =item $gene
11160:
11161: =item $usec
11162:
11163: =item $end
11164:
11165: =item $start
11166:
11167: =item $type
11168:
11169: =item $locktype
11170:
11171: =item $cid
11172:
11173: =item $selfenroll
11174:
11175: =item $context
11176:
11177: =back
11178:
11179:
11180: =item *
11181:
11182: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11183: custom role; give a custom role to a user for the level given by URL. Specify
11184: name and domain of role author, and role name
11185:
11186: =item *
11187:
11188: revokerole($udom,$uname,$url,$role) : revoke a role for url
11189:
11190: =item *
11191:
11192: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11193:
11194: =back
11195:
11196: =head2 Course Infomation
11197:
11198: =over 4
11199:
11200: =item *
11201:
11202: coursedescription($courseid,$options) : returns a hash of information about the
11203: specified course id, including all environment settings for the
11204: course, the description of the course will be in the hash under the
11205: key 'description'
11206:
11207: $options is an optional parameter that if supplied is a hash reference that controls
11208: what how this function works. It has the following key/values:
11209:
11210: =over 4
11211:
11212: =item freshen_cache
11213:
11214: If defined, and the environment cache for the course is valid, it is
11215: returned in the returned hash.
11216:
11217: =item one_time
11218:
11219: If defined, the last cache time is set to _now_
11220:
11221: =item user
11222:
11223: If defined, the supplied username is used instead of the current user.
11224:
11225:
11226: =back
11227:
11228: =item *
11229:
11230: resdata($name,$domain,$type,@which) : request for current parameter
11231: setting for a specific $type, where $type is either 'course' or 'user',
11232: @what should be a list of parameters to ask about. This routine caches
11233: answers for 5 minutes.
11234:
11235: =item *
11236:
11237: get_courseresdata($courseid, $domain) : dump the entire course resource
11238: data base, returning a hash that is keyed by the resource name and has
11239: values that are the resource value. I believe that the timestamps and
11240: versions are also returned.
11241:
11242:
11243: =back
11244:
11245: =head2 Course Modification
11246:
11247: =over 4
11248:
11249: =item *
11250:
11251: writecoursepref($courseid,%prefs) : write preferences (environment
11252: database) for a course
11253:
11254: =item *
11255:
11256: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11257:
11258: =item *
11259:
11260: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11261:
11262: =back
11263:
11264: =head2 Resource Subroutines
11265:
11266: =over 4
11267:
11268: =item *
11269:
11270: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11271:
11272: =item *
11273:
11274: repcopy($filename) : subscribes to the requested file, and attempts to
11275: replicate from the owning library server, Might return
11276: 'unavailable', 'not_found', 'forbidden', 'ok', or
11277: 'bad_request', also attempts to grab the metadata for the
11278: resource. Expects the local filesystem pathname
11279: (/home/httpd/html/res/....)
11280:
11281: =back
11282:
11283: =head2 Resource Information
11284:
11285: =over 4
11286:
11287: =item *
11288:
11289: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
11290: a vairety of different possible values, $varname should be a request
11291: string, and the other parameters can be used to specify who and what
11292: one is asking about.
11293:
11294: Possible values for $varname are environment.lastname (or other item
11295: from the envirnment hash), user.name (or someother aspect about the
11296: user), resource.0.maxtries (or some other part and parameter of a
11297: resource)
11298:
11299: =item *
11300:
11301: directcondval($number) : get current value of a condition; reads from a state
11302: string
11303:
11304: =item *
11305:
11306: condval($condidx) : value of condition index based on state
11307:
11308: =item *
11309:
11310: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
11311: resource's metadata, $what should be either a specific key, or either
11312: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11313: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11314:
11315: this function automatically caches all requests
11316:
11317: =item *
11318:
11319: metadata_query($query,$custom,$customshow) : make a metadata query against the
11320: network of library servers; returns file handle of where SQL and regex results
11321: will be stored for query
11322:
11323: =item *
11324:
11325: symbread($filename) : return symbolic list entry (filename argument optional);
11326: returns the data handle
11327:
11328: =item *
11329:
11330: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11331: a possible symb for the URL in $thisfn, and if is an encryypted
11332: resource that the user accessed using /enc/ returns a 1 on success, 0
11333: on failure, user must be in a course, as it assumes the existance of
11334: the course initial hash, and uses $env('request.course.id'}
11335:
11336:
11337: =item *
11338:
11339: symbclean($symb) : removes versions numbers from a symb, returns the
11340: cleaned symb
11341:
11342: =item *
11343:
11344: is_on_map($uri) : checks if the $uri is somewhere on the current
11345: course map, user must be in a course for it to work.
11346:
11347: =item *
11348:
11349: numval($salt) : return random seed value (addend for rndseed)
11350:
11351: =item *
11352:
11353: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11354: a random seed, all arguments are optional, if they aren't sent it uses the
11355: environment to derive them. Note: if symb isn't sent and it can't get one
11356: from &symbread it will use the current time as its return value
11357:
11358: =item *
11359:
11360: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11361: unfakeable, receipt
11362:
11363: =item *
11364:
11365: receipt() : API to ireceipt working off of env values; given out to users
11366:
11367: =item *
11368:
11369: countacc($url) : count the number of accesses to a given URL
11370:
11371: =item *
11372:
11373: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11374:
11375: =item *
11376:
11377: checkin($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 $tcrsid)
11378:
11379: =item *
11380:
11381: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11382:
11383: =item *
11384:
11385: devalidate($symb) : devalidate temporary spreadsheet calculations,
11386: forcing spreadsheet to reevaluate the resource scores next time.
11387:
11388: =back
11389:
11390: =head2 Storing/Retreiving Data
11391:
11392: =over 4
11393:
11394: =item *
11395:
11396: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11397: for this url; hashref needs to be given and should be a \%hashname; the
11398: remaining args aren't required and if they aren't passed or are '' they will
11399: be derived from the env
11400:
11401: =item *
11402:
11403: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11404: uses critical subroutine
11405:
11406: =item *
11407:
11408: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11409: all args are optional
11410:
11411: =item *
11412:
11413: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11414: dumps the complete (or key matching regexp) namespace into a hash
11415: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11416: normally &store()ed into
11417:
11418: $range should be either an integer '100' (give me the first 100
11419: matching records)
11420: or be two integers sperated by a - with no spaces
11421: '30-50' (give me the 30th through the 50th matching
11422: records)
11423:
11424:
11425: =item *
11426:
11427: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11428: replaces a &store() version of data with a replacement set of data
11429: for a particular resource in a namespace passed in the $storehash hash
11430: reference
11431:
11432: =item *
11433:
11434: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11435: works very similar to store/cstore, but all data is stored in a
11436: temporary location and can be reset using tmpreset, $storehash should
11437: be a hash reference, returns nothing on success
11438:
11439: =item *
11440:
11441: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11442: similar to restore, but all data is stored in a temporary location and
11443: can be reset using tmpreset. Returns a hash of values on success,
11444: error string otherwise.
11445:
11446: =item *
11447:
11448: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11449: deltes all keys for $symb form the temporary storage hash.
11450:
11451: =item *
11452:
11453: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11454: reference filled in from namesp ($udom and $uname are optional)
11455:
11456: =item *
11457:
11458: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11459: namesp ($udom and $uname are optional)
11460:
11461: =item *
11462:
11463: dump($namespace,$udom,$uname,$regexp,$range) :
11464: dumps the complete (or key matching regexp) namespace into a hash
11465: ($udom, $uname, $regexp, $range are optional)
11466:
11467: $range should be either an integer '100' (give me the first 100
11468: matching records)
11469: or be two integers sperated by a - with no spaces
11470: '30-50' (give me the 30th through the 50th matching
11471: records)
11472: =item *
11473:
11474: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11475: $store can be a scalar, an array reference, or if the amount to be
11476: incremented is > 1, a hash reference.
11477:
11478: ($udom and $uname are optional)
11479:
11480: =item *
11481:
11482: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11483: ($udom and $uname are optional)
11484:
11485: =item *
11486:
11487: cput($namespace,$storehash,$udom,$uname) : critical put
11488: ($udom and $uname are optional)
11489:
11490: =item *
11491:
11492: newput($namespace,$storehash,$udom,$uname) :
11493:
11494: Attempts to store the items in the $storehash, but only if they don't
11495: currently exist, if this succeeds you can be certain that you have
11496: successfully created a new key value pair in the $namespace db.
11497:
11498:
11499: Args:
11500: $namespace: name of database to store values to
11501: $storehash: hashref to store to the db
11502: $udom: (optional) domain of user containing the db
11503: $uname: (optional) name of user caontaining the db
11504:
11505: Returns:
11506: 'ok' -> succeeded in storing all keys of $storehash
11507: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11508: least <key> already existed in the db (other
11509: requested keys may also already exist)
11510: 'error: <msg>' -> unable to tie the DB or other error occurred
11511: 'con_lost' -> unable to contact request server
11512: 'refused' -> action was not allowed by remote machine
11513:
11514:
11515: =item *
11516:
11517: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11518: reference filled in from namesp (encrypts the return communication)
11519: ($udom and $uname are optional)
11520:
11521: =item *
11522:
11523: log($udom,$name,$home,$message) : write to permanent log for user; use
11524: critical subroutine
11525:
11526: =item *
11527:
11528: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11529: array reference filled in from namespace found in domain level on either
11530: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11531:
11532: =item *
11533:
11534: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11535: domain level either on specified domain server ($uhome) or primary domain
11536: server ($udom and $uhome are optional)
11537:
11538: =item *
11539:
11540: get_domain_defaults($target_domain) : returns hash with defaults for
11541: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11542: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11543: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11544: Values are retrieved from cache (if current), or from domain's configuration.db
11545: (if available), or lastly from values in lonTabs/dns_domain,tab,
11546: or lonTabs/domain.tab.
11547:
11548: %domdefaults = &get_auth_defaults($target_domain);
11549:
11550: =back
11551:
11552: =head2 Network Status Functions
11553:
11554: =over 4
11555:
11556: =item *
11557:
11558: dirlist($uri) : return directory list based on URI
11559:
11560: =item *
11561:
11562: spareserver() : find server with least workload from spare.tab
11563:
11564:
11565: =item *
11566:
11567: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11568: if there is no corresponding loncapa host.
11569:
11570: =back
11571:
11572:
11573: =head2 Apache Request
11574:
11575: =over 4
11576:
11577: =item *
11578:
11579: ssi($url,%hash) : server side include, does a complete request cycle on url to
11580: localhost, posts hash
11581:
11582: =back
11583:
11584: =head2 Data to String to Data
11585:
11586: =over 4
11587:
11588: =item *
11589:
11590: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11591: and '&' separators, supports elements that are arrayrefs and hashrefs
11592:
11593: =item *
11594:
11595: hashref2str($hashref) : convert a hashref into a string complete with
11596: escaping and '=' and '&' separators, supports elements that are
11597: arrayrefs and hashrefs
11598:
11599: =item *
11600:
11601: arrayref2str($arrayref) : convert an arrayref into a string complete
11602: with escaping and '&' separators, supports elements that are arrayrefs
11603: and hashrefs
11604:
11605: =item *
11606:
11607: str2hash($string) : convert string to hash using unescaping and
11608: splitting on '=' and '&', supports elements that are arrayrefs and
11609: hashrefs
11610:
11611: =item *
11612:
11613: str2array($string) : convert string to hash using unescaping and
11614: splitting on '&', supports elements that are arrayrefs and hashrefs
11615:
11616: =back
11617:
11618: =head2 Logging Routines
11619:
11620:
11621: These routines allow one to make log messages in the lonnet.log and
11622: lonnet.perm logfiles.
11623:
11624: =over 4
11625:
11626: =item *
11627:
11628: logtouch() : make sure the logfile, lonnet.log, exists
11629:
11630: =item *
11631:
11632: logthis() : append message to the normal lonnet.log file, it gets
11633: preiodically rolled over and deleted.
11634:
11635: =item *
11636:
11637: logperm() : append a permanent message to lonnet.perm.log, this log
11638: file never gets deleted by any automated portion of the system, only
11639: messages of critical importance should go in here.
11640:
11641:
11642: =back
11643:
11644: =head2 General File Helper Routines
11645:
11646: =over 4
11647:
11648: =item *
11649:
11650: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11651: (a) files in /uploaded
11652: (i) If a local copy of the file exists -
11653: compares modification date of local copy with last-modified date for
11654: definitive version stored on home server for course. If local copy is
11655: stale, requests a new version from the home server and stores it.
11656: If the original has been removed from the home server, then local copy
11657: is unlinked.
11658: (ii) If local copy does not exist -
11659: requests the file from the home server and stores it.
11660:
11661: If $caller is 'uploadrep':
11662: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11663: for request for files originally uploaded via DOCS.
11664: - returns 'ok' if fresh local copy now available, -1 otherwise.
11665:
11666: Otherwise:
11667: This indicates a call from the content generation phase of the request.
11668: - returns the entire contents of the file or -1.
11669:
11670: (b) files in /res
11671: - returns the entire contents of a file or -1;
11672: it properly subscribes to and replicates the file if neccessary.
11673:
11674:
11675: =item *
11676:
11677: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11678: reference
11679:
11680: returns either a stat() list of data about the file or an empty list
11681: if the file doesn't exist or couldn't find out about it (connection
11682: problems or user unknown)
11683:
11684: =item *
11685:
11686: filelocation($dir,$file) : returns file system location of a file
11687: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11688: directory that relative $file lookups are to looked in ($dir of /a/dir
11689: and a file of ../bob will become /a/bob)
11690:
11691: =item *
11692:
11693: hreflocation($dir,$file) : returns file system location or a URL; same as
11694: filelocation except for hrefs
11695:
11696: =item *
11697:
11698: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11699:
11700: =back
11701:
11702: =head2 Usererfile file routines (/uploaded*)
11703:
11704: =over 4
11705:
11706: =item *
11707:
11708: userfileupload(): main rotine for putting a file in a user or course's
11709: filespace, arguments are,
11710:
11711: formname - required - this is the name of the element in $env where the
11712: filename, and the contents of the file to create/modifed exist
11713: the filename is in $env{'form.'.$formname.'.filename'} and the
11714: contents of the file is located in $env{'form.'.$formname}
11715: context - if coursedoc, store the file in the course of the active role
11716: of the current user;
11717: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11718: if 'canceloverwrite': delete file in tmp/overwrites directory
11719: subdir - required - subdirectory to put the file in under ../userfiles/
11720: if undefined, it will be placed in "unknown"
11721:
11722: (This routine calls clean_filename() to remove any dangerous
11723: characters from the filename, and then calls finuserfileupload() to
11724: complete the transaction)
11725:
11726: returns either the url of the uploaded file (/uploaded/....) if successful
11727: and /adm/notfound.html if unsuccessful
11728:
11729: =item *
11730:
11731: clean_filename(): routine for cleaing a filename up for storage in
11732: userfile space, argument is:
11733:
11734: filename - proposed filename
11735:
11736: returns: the new clean filename
11737:
11738: =item *
11739:
11740: finishuserfileupload(): routine that creates and sends the file to
11741: userspace, probably shouldn't be called directly
11742:
11743: docuname: username or courseid of destination for the file
11744: docudom: domain of user/course of destination for the file
11745: formname: same as for userfileupload()
11746: fname: filename (including subdirectories) for the file
11747: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11748: allfiles: reference to hash used to store objects found by parser
11749: codebase: reference to hash used for codebases of java objects found by parser
11750: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11751: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11752: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11753: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11754: context: if 'overwrite', will move the uploaded file from its temporary location to
11755: userfiles to facilitate overwriting a previously uploaded file with same name.
11756: mimetype: reference to scalar to accommodate mime type determined
11757: from File::MMagic if $parser = parse.
11758:
11759: returns either the url of the uploaded file (/uploaded/....) if successful
11760: and /adm/notfound.html if unsuccessful (or an error message if context
11761: was 'overwrite').
11762:
11763:
11764: =item *
11765:
11766: renameuserfile(): renames an existing userfile to a new name
11767:
11768: Args:
11769: docuname: username or courseid of destination for the file
11770: docudom: domain of user/course of destination for the file
11771: old: current file name (including any subdirs under userfiles)
11772: new: desired file name (including any subdirs under userfiles)
11773:
11774: =item *
11775:
11776: mkdiruserfile(): creates a directory is a userfiles dir
11777:
11778: Args:
11779: docuname: username or courseid of destination for the file
11780: docudom: domain of user/course of destination for the file
11781: dir: dir to create (including any subdirs under userfiles)
11782:
11783: =item *
11784:
11785: removeuserfile(): removes a file that exists in userfiles
11786:
11787: Args:
11788: docuname: username or courseid of destination for the file
11789: docudom: domain of user/course of destination for the file
11790: fname: filname to delete (including any subdirs under userfiles)
11791:
11792: =item *
11793:
11794: removeuploadedurl(): convience function for removeuserfile()
11795:
11796: Args:
11797: url: a full /uploaded/... url to delete
11798:
11799: =item *
11800:
11801: get_portfile_permissions():
11802: Args:
11803: domain: domain of user or course contain the portfolio files
11804: user: name of user or num of course contain the portfolio files
11805: Returns:
11806: hashref of a dump of the proper file_permissions.db
11807:
11808:
11809: =item *
11810:
11811: get_access_controls():
11812:
11813: Args:
11814: current_permissions: the hash ref returned from get_portfile_permissions()
11815: group: (optional) the group you want the files associated with
11816: file: (optional) the file you want access info on
11817:
11818: Returns:
11819: a hash (keys are file names) of hashes containing
11820: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11821: values are XML containing access control settings (see below)
11822:
11823: Internal notes:
11824:
11825: access controls are stored in file_permissions.db as key=value pairs.
11826: key -> path to file/file_name\0uniqueID:scope_end_start
11827: where scope -> public,guest,course,group,domains or users.
11828: end -> UNIX time for end of access (0 -> no end date)
11829: start -> UNIX time for start of access
11830:
11831: value -> XML description of access control
11832: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11833: <start></start>
11834: <end></end>
11835:
11836: <password></password> for scope type = guest
11837:
11838: <domain></domain> for scope type = course or group
11839: <number></number>
11840: <roles id="">
11841: <role></role>
11842: <access></access>
11843: <section></section>
11844: <group></group>
11845: </roles>
11846:
11847: <dom></dom> for scope type = domains
11848:
11849: <users> for scope type = users
11850: <user>
11851: <uname></uname>
11852: <udom></udom>
11853: </user>
11854: </users>
11855: </scope>
11856:
11857: Access data is also aggregated for each file in an additional key=value pair:
11858: key -> path to file/file_name\0accesscontrol
11859: value -> reference to hash
11860: hash contains key = value pairs
11861: where key = uniqueID:scope_end_start
11862: value = UNIX time record was last updated
11863:
11864: Used to improve speed of look-ups of access controls for each file.
11865:
11866: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11867:
11868: modify_access_controls():
11869:
11870: Modifies access controls for a portfolio file
11871: Args
11872: 1. file name
11873: 2. reference to hash of required changes,
11874: 3. domain
11875: 4. username
11876: where domain,username are the domain of the portfolio owner
11877: (either a user or a course)
11878:
11879: Returns:
11880: 1. result of additions or updates ('ok' or 'error', with error message).
11881: 2. result of deletions ('ok' or 'error', with error message).
11882: 3. reference to hash of any new or updated access controls.
11883: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11884: key = integer (inbound ID)
11885: value = uniqueID
11886:
11887: =back
11888:
11889: =head2 HTTP Helper Routines
11890:
11891: =over 4
11892:
11893: =item *
11894:
11895: escape() : unpack non-word characters into CGI-compatible hex codes
11896:
11897: =item *
11898:
11899: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11900:
11901: =back
11902:
11903: =head1 PRIVATE SUBROUTINES
11904:
11905: =head2 Underlying communication routines (Shouldn't call)
11906:
11907: =over 4
11908:
11909: =item *
11910:
11911: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11912:
11913: =item *
11914:
11915: reply() : uses subreply to send a message to remote machine, logs all failures
11916:
11917: =item *
11918:
11919: critical() : passes a critical message to another server; if cannot
11920: get through then place message in connection buffer directory and
11921: returns con_delayed, if incapable of saving message, returns
11922: con_failed
11923:
11924: =item *
11925:
11926: reconlonc() : tries to reconnect lonc client processes.
11927:
11928: =back
11929:
11930: =head2 Resource Access Logging
11931:
11932: =over 4
11933:
11934: =item *
11935:
11936: flushcourselogs() : flush (save) buffer logs and access logs
11937:
11938: =item *
11939:
11940: courselog($what) : save message for course in hash
11941:
11942: =item *
11943:
11944: courseacclog($what) : save message for course using &courselog(). Perform
11945: special processing for specific resource types (problems, exams, quizzes, etc).
11946:
11947: =item *
11948:
11949: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11950: as a PerlChildExitHandler
11951:
11952: =back
11953:
11954: =head2 Other
11955:
11956: =over 4
11957:
11958: =item *
11959:
11960: symblist($mapname,%newhash) : update symbolic storage links
11961:
11962: =back
11963:
11964: =cut
11965:
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