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[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Wed Aug 25 16:34:36 2010 UTC (13 years, 10 months ago) by
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- Offloading from a busy server delayed until after authentication so
user's domain is available when determining which less loaded server
will host (check that hosting is allowed).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1083 2010/08/25 16:34:36 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: my $readit;
100: my $max_connection_retries = 10; # Or some such value.
101:
102: require Exporter;
103:
104: our @ISA = qw (Exporter);
105: our @EXPORT = qw(%env);
106:
107:
108: # --------------------------------------------------------------------- Logging
109: {
110: my $logid;
111: sub instructor_log {
112: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
113: if (($cnum eq '') || ($cdom eq '')) {
114: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
115: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
116: }
117: $logid++;
118: my $now = time();
119: my $id=$now.'00000'.$$.'00000'.$logid;
120: return &Apache::lonnet::put('nohist_'.$hash_name,
121: { $id => {
122: 'exe_uname' => $env{'user.name'},
123: 'exe_udom' => $env{'user.domain'},
124: 'exe_time' => $now,
125: 'exe_ip' => $ENV{'REMOTE_ADDR'},
126: 'delflag' => $delflag,
127: 'logentry' => $storehash,
128: 'uname' => $uname,
129: 'udom' => $udom,
130: }
131: },$cdom,$cnum);
132: }
133: }
134:
135: sub logtouch {
136: my $execdir=$perlvar{'lonDaemons'};
137: unless (-e "$execdir/logs/lonnet.log") {
138: open(my $fh,">>$execdir/logs/lonnet.log");
139: close $fh;
140: }
141: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
142: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
143: }
144:
145: sub logthis {
146: my $message=shift;
147: my $execdir=$perlvar{'lonDaemons'};
148: my $now=time;
149: my $local=localtime($now);
150: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
151: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
152: print $fh $logstring;
153: close($fh);
154: }
155: return 1;
156: }
157:
158: sub logperm {
159: my $message=shift;
160: my $execdir=$perlvar{'lonDaemons'};
161: my $now=time;
162: my $local=localtime($now);
163: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
164: print $fh "$now:$message:$local\n";
165: close($fh);
166: }
167: return 1;
168: }
169:
170: sub create_connection {
171: my ($hostname,$lonid) = @_;
172: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
173: Type => SOCK_STREAM,
174: Timeout => 10);
175: return 0 if (!$client);
176: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
177: my $result = <$client>;
178: chomp($result);
179: return 1 if ($result eq 'done');
180: return 0;
181: }
182:
183: sub get_server_timezone {
184: my ($cnum,$cdom) = @_;
185: my $home=&homeserver($cnum,$cdom);
186: if ($home ne 'no_host') {
187: my $cachetime = 24*3600;
188: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
189: if (defined($cached)) {
190: return $timezone;
191: } else {
192: my $timezone = &reply('servertimezone',$home);
193: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
194: }
195: }
196: }
197:
198: sub get_server_loncaparev {
199: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
200: if (defined($lonhost)) {
201: if (!defined(&hostname($lonhost))) {
202: undef($lonhost);
203: }
204: }
205: if (!defined($lonhost)) {
206: if (defined(&domain($dom,'primary'))) {
207: $lonhost=&domain($dom,'primary');
208: if ($lonhost eq 'no_host') {
209: undef($lonhost);
210: }
211: }
212: }
213: if (defined($lonhost)) {
214: my $cachetime = 12*3600;
215: if (!$ignore_cache) {
216: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
217: if (defined($cached)) {
218: return $loncaparev;
219: }
220: }
221: my ($answer,$loncaparev);
222: my @ids=¤t_machine_ids();
223: if (grep(/^\Q$lonhost\E$/,@ids)) {
224: $answer = $perlvar{'lonVersion'};
225: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
226: $loncaparev = $1;
227: }
228: } else {
229: $answer = &reply('serverloncaparev',$lonhost);
230: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
231: if ($caller eq 'loncron') {
232: my $ua=new LWP::UserAgent;
233: $ua->timeout(4);
234: my $protocol = $protocol{$lonhost};
235: $protocol = 'http' if ($protocol ne 'https');
236: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
237: my $request=new HTTP::Request('GET',$url);
238: my $response=$ua->request($request);
239: unless ($response->is_error()) {
240: my $content = $response->content;
241: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
242: $loncaparev = $1;
243: }
244: }
245: } else {
246: $loncaparev = $loncaparevs{$lonhost};
247: }
248: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
249: $loncaparev = $1;
250: }
251: }
252: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
253: }
254: }
255:
256: sub get_server_homeID {
257: my ($hostname,$ignore_cache,$caller) = @_;
258: unless ($ignore_cache) {
259: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
260: if (defined($cached)) {
261: return $serverhomeID;
262: }
263: }
264: my $cachetime = 12*3600;
265: my $serverhomeID;
266: if ($caller eq 'loncron') {
267: my @machine_ids = &machine_ids($hostname);
268: foreach my $id (@machine_ids) {
269: my $response = &reply('serverhomeID',$id);
270: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
271: $serverhomeID = $response;
272: last;
273: }
274: }
275: if ($serverhomeID eq '') {
276: $serverhomeID = $machine_ids[-1];
277: }
278: } else {
279: $serverhomeID = $serverhomeIDs{$hostname};
280: }
281: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
282: }
283:
284: # -------------------------------------------------- Non-critical communication
285: sub subreply {
286: my ($cmd,$server)=@_;
287: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
288: #
289: # With loncnew process trimming, there's a timing hole between lonc server
290: # process exit and the master server picking up the listen on the AF_UNIX
291: # socket. In that time interval, a lock file will exist:
292:
293: my $lockfile=$peerfile.".lock";
294: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
295: sleep(1);
296: }
297: # At this point, either a loncnew parent is listening or an old lonc
298: # or loncnew child is listening so we can connect or everything's dead.
299: #
300: # We'll give the connection a few tries before abandoning it. If
301: # connection is not possible, we'll con_lost back to the client.
302: #
303: my $client;
304: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
305: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
306: Type => SOCK_STREAM,
307: Timeout => 10);
308: if ($client) {
309: last; # Connected!
310: } else {
311: &create_connection(&hostname($server),$server);
312: }
313: sleep(1); # Try again later if failed connection.
314: }
315: my $answer;
316: if ($client) {
317: print $client "sethost:$server:$cmd\n";
318: $answer=<$client>;
319: if (!$answer) { $answer="con_lost"; }
320: chomp($answer);
321: } else {
322: $answer = 'con_lost'; # Failed connection.
323: }
324: return $answer;
325: }
326:
327: sub reply {
328: my ($cmd,$server)=@_;
329: unless (defined(&hostname($server))) { return 'no_such_host'; }
330: my $answer=subreply($cmd,$server);
331: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
332: &logthis("<font color=\"blue\">WARNING:".
333: " $cmd to $server returned $answer</font>");
334: }
335: return $answer;
336: }
337:
338: # ----------------------------------------------------------- Send USR1 to lonc
339:
340: sub reconlonc {
341: my ($lonid) = @_;
342: my $hostname = &hostname($lonid);
343: if ($lonid) {
344: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
345: if ($hostname && -e $peerfile) {
346: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
347: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
348: Type => SOCK_STREAM,
349: Timeout => 10);
350: if ($client) {
351: print $client ("reset_retries\n");
352: my $answer=<$client>;
353: #reset just this one.
354: }
355: }
356: return;
357: }
358:
359: &logthis("Trying to reconnect lonc");
360: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
361: if (open(my $fh,"<$loncfile")) {
362: my $loncpid=<$fh>;
363: chomp($loncpid);
364: if (kill 0 => $loncpid) {
365: &logthis("lonc at pid $loncpid responding, sending USR1");
366: kill USR1 => $loncpid;
367: sleep 1;
368: } else {
369: &logthis(
370: "<font color=\"blue\">WARNING:".
371: " lonc at pid $loncpid not responding, giving up</font>");
372: }
373: } else {
374: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
375: }
376: }
377:
378: # ------------------------------------------------------ Critical communication
379:
380: sub critical {
381: my ($cmd,$server)=@_;
382: unless (&hostname($server)) {
383: &logthis("<font color=\"blue\">WARNING:".
384: " Critical message to unknown server ($server)</font>");
385: return 'no_such_host';
386: }
387: my $answer=reply($cmd,$server);
388: if ($answer eq 'con_lost') {
389: &reconlonc("$perlvar{'lonSockDir'}/$server");
390: my $answer=reply($cmd,$server);
391: if ($answer eq 'con_lost') {
392: my $now=time;
393: my $middlename=$cmd;
394: $middlename=substr($middlename,0,16);
395: $middlename=~s/\W//g;
396: my $dfilename=
397: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
398: $dumpcount++;
399: {
400: my $dfh;
401: if (open($dfh,">$dfilename")) {
402: print $dfh "$cmd\n";
403: close($dfh);
404: }
405: }
406: sleep 2;
407: my $wcmd='';
408: {
409: my $dfh;
410: if (open($dfh,"<$dfilename")) {
411: $wcmd=<$dfh>;
412: close($dfh);
413: }
414: }
415: chomp($wcmd);
416: if ($wcmd eq $cmd) {
417: &logthis("<font color=\"blue\">WARNING: ".
418: "Connection buffer $dfilename: $cmd</font>");
419: &logperm("D:$server:$cmd");
420: return 'con_delayed';
421: } else {
422: &logthis("<font color=\"red\">CRITICAL:"
423: ." Critical connection failed: $server $cmd</font>");
424: &logperm("F:$server:$cmd");
425: return 'con_failed';
426: }
427: }
428: }
429: return $answer;
430: }
431:
432: # ------------------------------------------- check if return value is an error
433:
434: sub error {
435: my ($result) = @_;
436: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
437: if ($2 == 2) { return undef; }
438: return $1;
439: }
440: return undef;
441: }
442:
443: sub convert_and_load_session_env {
444: my ($lonidsdir,$handle)=@_;
445: my @profile;
446: {
447: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
448: if (!$opened) {
449: return 0;
450: }
451: flock($idf,LOCK_SH);
452: @profile=<$idf>;
453: close($idf);
454: }
455: my %temp_env;
456: foreach my $line (@profile) {
457: if ($line !~ m/=/) {
458: return 0;
459: }
460: chomp($line);
461: my ($envname,$envvalue)=split(/=/,$line,2);
462: $temp_env{&unescape($envname)} = &unescape($envvalue);
463: }
464: unlink("$lonidsdir/$handle.id");
465: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
466: 0640)) {
467: %disk_env = %temp_env;
468: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
469: untie(%disk_env);
470: }
471: return 1;
472: }
473:
474: # ------------------------------------------- Transfer profile into environment
475: my $env_loaded;
476: sub transfer_profile_to_env {
477: my ($lonidsdir,$handle,$force_transfer) = @_;
478: if (!$force_transfer && $env_loaded) { return; }
479:
480: if (!defined($lonidsdir)) {
481: $lonidsdir = $perlvar{'lonIDsDir'};
482: }
483: if (!defined($handle)) {
484: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
485: }
486:
487: my $convert;
488: {
489: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
490: if (!$opened) {
491: return;
492: }
493: flock($idf,LOCK_SH);
494: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
495: &GDBM_READER(),0640)) {
496: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
497: untie(%disk_env);
498: } else {
499: $convert = 1;
500: }
501: }
502: if ($convert) {
503: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
504: &logthis("Failed to load session, or convert session.");
505: }
506: }
507:
508: my %remove;
509: while ( my $envname = each(%env) ) {
510: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
511: if ($time < time-300) {
512: $remove{$key}++;
513: }
514: }
515: }
516:
517: $env{'user.environment'} = "$lonidsdir/$handle.id";
518: $env_loaded=1;
519: foreach my $expired_key (keys(%remove)) {
520: &delenv($expired_key);
521: }
522: }
523:
524: # ---------------------------------------------------- Check for valid session
525: sub check_for_valid_session {
526: my ($r) = @_;
527: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
528: my $lonid=$cookies{'lonID'};
529: return undef if (!$lonid);
530:
531: my $handle=&LONCAPA::clean_handle($lonid->value);
532: my $lonidsdir=$r->dir_config('lonIDsDir');
533: return undef if (!-e "$lonidsdir/$handle.id");
534:
535: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
536: return undef if (!$opened);
537:
538: flock($idf,LOCK_SH);
539: my %disk_env;
540: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
541: &GDBM_READER(),0640)) {
542: return undef;
543: }
544:
545: if (!defined($disk_env{'user.name'})
546: || !defined($disk_env{'user.domain'})) {
547: return undef;
548: }
549: return $handle;
550: }
551:
552: sub timed_flock {
553: my ($file,$lock_type) = @_;
554: my $failed=0;
555: eval {
556: local $SIG{__DIE__}='DEFAULT';
557: local $SIG{ALRM}=sub {
558: $failed=1;
559: die("failed lock");
560: };
561: alarm(13);
562: flock($file,$lock_type);
563: alarm(0);
564: };
565: if ($failed) {
566: return undef;
567: } else {
568: return 1;
569: }
570: }
571:
572: # ---------------------------------------------------------- Append Environment
573:
574: sub appenv {
575: my ($newenv,$roles) = @_;
576: if (ref($newenv) eq 'HASH') {
577: foreach my $key (keys(%{$newenv})) {
578: my $refused = 0;
579: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
580: $refused = 1;
581: if (ref($roles) eq 'ARRAY') {
582: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
583: if (grep(/^\Q$role\E$/,@{$roles})) {
584: $refused = 0;
585: }
586: }
587: }
588: if ($refused) {
589: &logthis("<font color=\"blue\">WARNING: ".
590: "Attempt to modify environment ".$key." to ".$newenv->{$key}
591: .'</font>');
592: delete($newenv->{$key});
593: } else {
594: $env{$key}=$newenv->{$key};
595: }
596: }
597: my $opened = open(my $env_file,'+<',$env{'user.environment'});
598: if ($opened
599: && &timed_flock($env_file,LOCK_EX)
600: &&
601: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
602: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
603: while (my ($key,$value) = each(%{$newenv})) {
604: $disk_env{$key} = $value;
605: }
606: untie(%disk_env);
607: }
608: }
609: return 'ok';
610: }
611: # ----------------------------------------------------- Delete from Environment
612:
613: sub delenv {
614: my ($delthis,$regexp) = @_;
615: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
616: &logthis("<font color=\"blue\">WARNING: ".
617: "Attempt to delete from environment ".$delthis);
618: return 'error';
619: }
620: my $opened = open(my $env_file,'+<',$env{'user.environment'});
621: if ($opened
622: && &timed_flock($env_file,LOCK_EX)
623: &&
624: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
625: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
626: foreach my $key (keys(%disk_env)) {
627: if ($regexp) {
628: if ($key=~/^$delthis/) {
629: delete($env{$key});
630: delete($disk_env{$key});
631: }
632: } else {
633: if ($key=~/^\Q$delthis\E/) {
634: delete($env{$key});
635: delete($disk_env{$key});
636: }
637: }
638: }
639: untie(%disk_env);
640: }
641: return 'ok';
642: }
643:
644: sub get_env_multiple {
645: my ($name) = @_;
646: my @values;
647: if (defined($env{$name})) {
648: # exists is it an array
649: if (ref($env{$name})) {
650: @values=@{ $env{$name} };
651: } else {
652: $values[0]=$env{$name};
653: }
654: }
655: return(@values);
656: }
657:
658: # ------------------------------------------------------------------- Locking
659:
660: sub set_lock {
661: my ($text)=@_;
662: $locknum++;
663: my $id=$$.'-'.$locknum;
664: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
665: 'session.lock.'.$id => $text});
666: return $id;
667: }
668:
669: sub get_locks {
670: my $num=0;
671: my %texts=();
672: foreach my $lock (split(/\,/,$env{'session.locks'})) {
673: if ($lock=~/\w/) {
674: $num++;
675: $texts{$lock}=$env{'session.lock.'.$lock};
676: }
677: }
678: return ($num,%texts);
679: }
680:
681: sub remove_lock {
682: my ($id)=@_;
683: my $newlocks='';
684: foreach my $lock (split(/\,/,$env{'session.locks'})) {
685: if (($lock=~/\w/) && ($lock ne $id)) {
686: $newlocks.=','.$lock;
687: }
688: }
689: &appenv({'session.locks' => $newlocks});
690: &delenv('session.lock.'.$id);
691: }
692:
693: sub remove_all_locks {
694: my $activelocks=$env{'session.locks'};
695: foreach my $lock (split(/\,/,$env{'session.locks'})) {
696: if ($lock=~/\w/) {
697: &remove_lock($lock);
698: }
699: }
700: }
701:
702:
703: # ------------------------------------------ Find out current server userload
704: sub userload {
705: my $numusers=0;
706: {
707: opendir(LONIDS,$perlvar{'lonIDsDir'});
708: my $filename;
709: my $curtime=time;
710: while ($filename=readdir(LONIDS)) {
711: next if ($filename eq '.' || $filename eq '..');
712: next if ($filename =~ /publicuser_\d+\.id/);
713: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
714: if ($curtime-$mtime < 1800) { $numusers++; }
715: }
716: closedir(LONIDS);
717: }
718: my $userloadpercent=0;
719: my $maxuserload=$perlvar{'lonUserLoadLim'};
720: if ($maxuserload) {
721: $userloadpercent=100*$numusers/$maxuserload;
722: }
723: $userloadpercent=sprintf("%.2f",$userloadpercent);
724: return $userloadpercent;
725: }
726:
727: # ------------------------------ Find server with least workload from spare.tab
728:
729: sub spareserver {
730: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
731: my $spare_server;
732: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
733: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
734: : $userloadpercent;
735: my ($uint_dom,$remotesessions);
736: if (($udom ne '') && (&domain($udom) ne '')) {
737: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
738: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
739: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
740: $remotesessions = $udomdefaults{'remotesessions'};
741: }
742: foreach my $try_server (@{ $spareid{'primary'} }) {
743: if ($uint_dom) {
744: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
745: $try_server));
746: }
747: ($spare_server, $lowest_load) =
748: &compare_server_load($try_server, $spare_server, $lowest_load);
749: }
750:
751: my $found_server = ($spare_server ne '' && $lowest_load < 100);
752:
753: if (!$found_server) {
754: foreach my $try_server (@{ $spareid{'default'} }) {
755: if ($uint_dom) {
756: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
757: $try_server));
758: }
759: ($spare_server, $lowest_load) =
760: &compare_server_load($try_server, $spare_server, $lowest_load);
761: }
762: }
763:
764: if (!$want_server_name) {
765: my $protocol = 'http';
766: if ($protocol{$spare_server} eq 'https') {
767: $protocol = $protocol{$spare_server};
768: }
769: if (defined($spare_server)) {
770: my $hostname = &hostname($spare_server);
771: if (defined($hostname)) {
772: $spare_server = $protocol.'://'.$hostname;
773: }
774: }
775: }
776: return $spare_server;
777: }
778:
779: sub compare_server_load {
780: my ($try_server, $spare_server, $lowest_load) = @_;
781:
782: my $loadans = &reply('load', $try_server);
783: my $userloadans = &reply('userload',$try_server);
784:
785: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
786: return; #didn't get a number from the server
787: }
788:
789: my $load;
790: if ($loadans =~ /\d/) {
791: if ($userloadans =~ /\d/) {
792: #both are numbers, pick the bigger one
793: $load = ($loadans > $userloadans) ? $loadans
794: : $userloadans;
795: } else {
796: $load = $loadans;
797: }
798: } else {
799: $load = $userloadans;
800: }
801:
802: if (($load =~ /\d/) && ($load < $lowest_load)) {
803: $spare_server = $try_server;
804: $lowest_load = $load;
805: }
806: return ($spare_server,$lowest_load);
807: }
808:
809: # --------------------------- ask offload servers if user already has a session
810: sub find_existing_session {
811: my ($udom,$uname) = @_;
812: foreach my $try_server (@{ $spareid{'primary'} },
813: @{ $spareid{'default'} }) {
814: return $try_server if (&has_user_session($try_server, $udom, $uname));
815: }
816: return;
817: }
818:
819: # -------------------------------- ask if server already has a session for user
820: sub has_user_session {
821: my ($lonid,$udom,$uname) = @_;
822: my $result = &reply(join(':','userhassession',
823: map {&escape($_)} ($udom,$uname)),$lonid);
824: return 1 if ($result eq 'ok');
825:
826: return 0;
827: }
828:
829: # --------- determine least loaded server in a user's domain which allows login
830:
831: sub choose_server {
832: my ($udom) = @_;
833: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
834: my %servers = &get_servers($udom);
835: my $lowest_load = 30000;
836: my ($login_host,$hostname);
837: foreach my $lonhost (keys(%servers)) {
838: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
839: if ($loginvia eq '') {
840: ($login_host, $lowest_load) =
841: &compare_server_load($lonhost, $login_host, $lowest_load);
842: }
843: }
844: if ($login_host ne '') {
845: $hostname = $servers{$login_host};
846: }
847: return ($login_host,$hostname);
848: }
849:
850: # --------------------------------------------- Try to change a user's password
851:
852: sub changepass {
853: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
854: $currentpass = &escape($currentpass);
855: $newpass = &escape($newpass);
856: my $lonhost = $perlvar{'lonHostID'};
857: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
858: $server);
859: if (! $answer) {
860: &logthis("No reply on password change request to $server ".
861: "by $uname in domain $udom.");
862: } elsif ($answer =~ "^ok") {
863: &logthis("$uname in $udom successfully changed their password ".
864: "on $server.");
865: } elsif ($answer =~ "^pwchange_failure") {
866: &logthis("$uname in $udom was unable to change their password ".
867: "on $server. The action was blocked by either lcpasswd ".
868: "or pwchange");
869: } elsif ($answer =~ "^non_authorized") {
870: &logthis("$uname in $udom did not get their password correct when ".
871: "attempting to change it on $server.");
872: } elsif ($answer =~ "^auth_mode_error") {
873: &logthis("$uname in $udom attempted to change their password despite ".
874: "not being locally or internally authenticated on $server.");
875: } elsif ($answer =~ "^unknown_user") {
876: &logthis("$uname in $udom attempted to change their password ".
877: "on $server but were unable to because $server is not ".
878: "their home server.");
879: } elsif ($answer =~ "^refused") {
880: &logthis("$server refused to change $uname in $udom password because ".
881: "it was sent an unencrypted request to change the password.");
882: } elsif ($answer =~ "invalid_client") {
883: &logthis("$server refused to change $uname in $udom password because ".
884: "it was a reset by e-mail originating from an invalid server.");
885: }
886: return $answer;
887: }
888:
889: # ----------------------- Try to determine user's current authentication scheme
890:
891: sub queryauthenticate {
892: my ($uname,$udom)=@_;
893: my $uhome=&homeserver($uname,$udom);
894: if (!$uhome) {
895: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
896: return 'no_host';
897: }
898: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
899: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
900: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
901: }
902: return $answer;
903: }
904:
905: # --------- Try to authenticate user from domain's lib servers (first this one)
906:
907: sub authenticate {
908: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
909: $upass=&escape($upass);
910: $uname= &LONCAPA::clean_username($uname);
911: my $uhome=&homeserver($uname,$udom,1);
912: my $newhome;
913: if ((!$uhome) || ($uhome eq 'no_host')) {
914: # Maybe the machine was offline and only re-appeared again recently?
915: &reconlonc();
916: # One more
917: $uhome=&homeserver($uname,$udom,1);
918: if (($uhome eq 'no_host') && $checkdefauth) {
919: if (defined(&domain($udom,'primary'))) {
920: $newhome=&domain($udom,'primary');
921: }
922: if ($newhome ne '') {
923: $uhome = $newhome;
924: }
925: }
926: if ((!$uhome) || ($uhome eq 'no_host')) {
927: &logthis("User $uname at $udom is unknown in authenticate");
928: return 'no_host';
929: }
930: }
931: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
932: if ($answer eq 'authorized') {
933: if ($newhome) {
934: &logthis("User $uname at $udom authorized by $uhome, but needs account");
935: return 'no_account_on_host';
936: } else {
937: &logthis("User $uname at $udom authorized by $uhome");
938: return $uhome;
939: }
940: }
941: if ($answer eq 'non_authorized') {
942: &logthis("User $uname at $udom rejected by $uhome");
943: return 'no_host';
944: }
945: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
946: return 'no_host';
947: }
948:
949: sub can_host_session {
950: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
951: my $canhost = 1;
952: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
953: if (ref($remotesessions) eq 'HASH') {
954: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
955: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
956: $canhost = 0;
957: } else {
958: $canhost = 1;
959: }
960: }
961: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
962: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
963: $canhost = 1;
964: } else {
965: $canhost = 0;
966: }
967: }
968: if ($canhost) {
969: if ($remotesessions->{'version'} ne '') {
970: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
971: if ($reqmajor ne '' && $reqminor ne '') {
972: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
973: my $major = $1;
974: my $minor = $2;
975: if (($major < $reqmajor ) ||
976: (($major == $reqmajor) && ($minor < $reqminor))) {
977: $canhost = 0;
978: }
979: } else {
980: $canhost = 0;
981: }
982: }
983: }
984: }
985: }
986: if ($canhost) {
987: if (ref($hostedsessions) eq 'HASH') {
988: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
989: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
990: $canhost = 0;
991: } else {
992: $canhost = 1;
993: }
994: }
995: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
996: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
997: $canhost = 1;
998: } else {
999: $canhost = 0;
1000: }
1001: }
1002: }
1003: }
1004: return $canhost;
1005: }
1006:
1007: sub spare_can_host {
1008: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1009: my $canhost=1;
1010: my @intdoms;
1011: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1012: if (ref($internet_names) eq 'ARRAY') {
1013: @intdoms = @{$internet_names};
1014: }
1015: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1016: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1017: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1018: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1019: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1020: $canhost = &can_host_session($udom,$try_server,$remoterev,
1021: $remotesessions,
1022: $defdomdefaults{'hostedsessions'});
1023: }
1024: return $canhost;
1025: }
1026:
1027: # ---------------------- Find the homebase for a user from domain's lib servers
1028:
1029: my %homecache;
1030: sub homeserver {
1031: my ($uname,$udom,$ignoreBadCache)=@_;
1032: my $index="$uname:$udom";
1033:
1034: if (exists($homecache{$index})) { return $homecache{$index}; }
1035:
1036: my %servers = &get_servers($udom,'library');
1037: foreach my $tryserver (keys(%servers)) {
1038: next if ($ignoreBadCache ne 'true' &&
1039: exists($badServerCache{$tryserver}));
1040:
1041: my $answer=reply("home:$udom:$uname",$tryserver);
1042: if ($answer eq 'found') {
1043: delete($badServerCache{$tryserver});
1044: return $homecache{$index}=$tryserver;
1045: } elsif ($answer eq 'no_host') {
1046: $badServerCache{$tryserver}=1;
1047: }
1048: }
1049: return 'no_host';
1050: }
1051:
1052: # ------------------------------------- Find the usernames behind a list of IDs
1053:
1054: sub idget {
1055: my ($udom,@ids)=@_;
1056: my %returnhash=();
1057:
1058: my %servers = &get_servers($udom,'library');
1059: foreach my $tryserver (keys(%servers)) {
1060: my $idlist=join('&',@ids);
1061: $idlist=~tr/A-Z/a-z/;
1062: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1063: my @answer=();
1064: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1065: @answer=split(/\&/,$reply);
1066: } ;
1067: my $i;
1068: for ($i=0;$i<=$#ids;$i++) {
1069: if ($answer[$i]) {
1070: $returnhash{$ids[$i]}=$answer[$i];
1071: }
1072: }
1073: }
1074: return %returnhash;
1075: }
1076:
1077: # ------------------------------------- Find the IDs behind a list of usernames
1078:
1079: sub idrget {
1080: my ($udom,@unames)=@_;
1081: my %returnhash=();
1082: foreach my $uname (@unames) {
1083: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1084: }
1085: return %returnhash;
1086: }
1087:
1088: # ------------------------------- Store away a list of names and associated IDs
1089:
1090: sub idput {
1091: my ($udom,%ids)=@_;
1092: my %servers=();
1093: foreach my $uname (keys(%ids)) {
1094: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1095: my $uhom=&homeserver($uname,$udom);
1096: if ($uhom ne 'no_host') {
1097: my $id=&escape($ids{$uname});
1098: $id=~tr/A-Z/a-z/;
1099: my $esc_unam=&escape($uname);
1100: if ($servers{$uhom}) {
1101: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1102: } else {
1103: $servers{$uhom}=$id.'='.$esc_unam;
1104: }
1105: }
1106: }
1107: foreach my $server (keys(%servers)) {
1108: &critical('idput:'.$udom.':'.$servers{$server},$server);
1109: }
1110: }
1111:
1112: # ------------------------------dump from db file owned by domainconfig user
1113: sub dump_dom {
1114: my ($namespace,$udom,$regexp,$range)=@_;
1115: if (!$udom) {
1116: $udom=$env{'user.domain'};
1117: }
1118: my %returnhash;
1119: if ($udom) {
1120: my $uname = &get_domainconfiguser($udom);
1121: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1122: }
1123: return %returnhash;
1124: }
1125:
1126: # ------------------------------------------ get items from domain db files
1127:
1128: sub get_dom {
1129: my ($namespace,$storearr,$udom,$uhome)=@_;
1130: my $items='';
1131: foreach my $item (@$storearr) {
1132: $items.=&escape($item).'&';
1133: }
1134: $items=~s/\&$//;
1135: if (!$udom) {
1136: $udom=$env{'user.domain'};
1137: if (defined(&domain($udom,'primary'))) {
1138: $uhome=&domain($udom,'primary');
1139: } else {
1140: undef($uhome);
1141: }
1142: } else {
1143: if (!$uhome) {
1144: if (defined(&domain($udom,'primary'))) {
1145: $uhome=&domain($udom,'primary');
1146: }
1147: }
1148: }
1149: if ($udom && $uhome && ($uhome ne 'no_host')) {
1150: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1151: my %returnhash;
1152: if ($rep eq '' || $rep =~ /^error: 2 /) {
1153: return %returnhash;
1154: }
1155: my @pairs=split(/\&/,$rep);
1156: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1157: return @pairs;
1158: }
1159: my $i=0;
1160: foreach my $item (@$storearr) {
1161: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1162: $i++;
1163: }
1164: return %returnhash;
1165: } else {
1166: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1167: }
1168: }
1169:
1170: # -------------------------------------------- put items in domain db files
1171:
1172: sub put_dom {
1173: my ($namespace,$storehash,$udom,$uhome)=@_;
1174: if (!$udom) {
1175: $udom=$env{'user.domain'};
1176: if (defined(&domain($udom,'primary'))) {
1177: $uhome=&domain($udom,'primary');
1178: } else {
1179: undef($uhome);
1180: }
1181: } else {
1182: if (!$uhome) {
1183: if (defined(&domain($udom,'primary'))) {
1184: $uhome=&domain($udom,'primary');
1185: }
1186: }
1187: }
1188: if ($udom && $uhome && ($uhome ne 'no_host')) {
1189: my $items='';
1190: foreach my $item (keys(%$storehash)) {
1191: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1192: }
1193: $items=~s/\&$//;
1194: return &reply("putdom:$udom:$namespace:$items",$uhome);
1195: } else {
1196: &logthis("put_dom failed - no homeserver and/or domain");
1197: }
1198: }
1199:
1200: # --------------------- newput for items in db file owned by domainconfig user
1201: sub newput_dom {
1202: my ($namespace,$storehash,$udom) = @_;
1203: my $result;
1204: if (!$udom) {
1205: $udom=$env{'user.domain'};
1206: }
1207: if ($udom) {
1208: my $uname = &get_domainconfiguser($udom);
1209: $result = &newput($namespace,$storehash,$udom,$uname);
1210: }
1211: return $result;
1212: }
1213:
1214: # --------------------- delete for items in db file owned by domainconfig user
1215: sub del_dom {
1216: my ($namespace,$storearr,$udom)=@_;
1217: if (ref($storearr) eq 'ARRAY') {
1218: if (!$udom) {
1219: $udom=$env{'user.domain'};
1220: }
1221: if ($udom) {
1222: my $uname = &get_domainconfiguser($udom);
1223: return &del($namespace,$storearr,$udom,$uname);
1224: }
1225: }
1226: }
1227:
1228: # ----------------------------------construct domainconfig user for a domain
1229: sub get_domainconfiguser {
1230: my ($udom) = @_;
1231: return $udom.'-domainconfig';
1232: }
1233:
1234: sub retrieve_inst_usertypes {
1235: my ($udom) = @_;
1236: my (%returnhash,@order);
1237: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1238: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1239: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1240: %returnhash = %{$domdefs{'inststatustypes'}};
1241: @order = @{$domdefs{'inststatusorder'}};
1242: } else {
1243: if (defined(&domain($udom,'primary'))) {
1244: my $uhome=&domain($udom,'primary');
1245: my $rep=&reply("inst_usertypes:$udom",$uhome);
1246: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1247: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1248: return (\%returnhash,\@order);
1249: }
1250: my ($hashitems,$orderitems) = split(/:/,$rep);
1251: my @pairs=split(/\&/,$hashitems);
1252: foreach my $item (@pairs) {
1253: my ($key,$value)=split(/=/,$item,2);
1254: $key = &unescape($key);
1255: next if ($key =~ /^error: 2 /);
1256: $returnhash{$key}=&thaw_unescape($value);
1257: }
1258: my @esc_order = split(/\&/,$orderitems);
1259: foreach my $item (@esc_order) {
1260: push(@order,&unescape($item));
1261: }
1262: } else {
1263: &logthis("get_dom failed - no primary domain server for $udom");
1264: }
1265: }
1266: return (\%returnhash,\@order);
1267: }
1268:
1269: sub is_domainimage {
1270: my ($url) = @_;
1271: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1272: if (&domain($1) ne '') {
1273: return '1';
1274: }
1275: }
1276: return;
1277: }
1278:
1279: sub inst_directory_query {
1280: my ($srch) = @_;
1281: my $udom = $srch->{'srchdomain'};
1282: my %results;
1283: my $homeserver = &domain($udom,'primary');
1284: my $outcome;
1285: if ($homeserver ne '') {
1286: my $queryid=&reply("querysend:instdirsearch:".
1287: &escape($srch->{'srchby'}).':'.
1288: &escape($srch->{'srchterm'}).':'.
1289: &escape($srch->{'srchtype'}),$homeserver);
1290: my $host=&hostname($homeserver);
1291: if ($queryid !~/^\Q$host\E\_/) {
1292: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1293: return;
1294: }
1295: my $response = &get_query_reply($queryid);
1296: my $maxtries = 5;
1297: my $tries = 1;
1298: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1299: $response = &get_query_reply($queryid);
1300: $tries ++;
1301: }
1302:
1303: if (!&error($response) && $response ne 'refused') {
1304: if ($response eq 'unavailable') {
1305: $outcome = $response;
1306: } else {
1307: $outcome = 'ok';
1308: my @matches = split(/\n/,$response);
1309: foreach my $match (@matches) {
1310: my ($key,$value) = split(/=/,$match);
1311: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1312: }
1313: }
1314: }
1315: }
1316: return ($outcome,%results);
1317: }
1318:
1319: sub usersearch {
1320: my ($srch) = @_;
1321: my $dom = $srch->{'srchdomain'};
1322: my %results;
1323: my %libserv = &all_library();
1324: my $query = 'usersearch';
1325: foreach my $tryserver (keys(%libserv)) {
1326: if (&host_domain($tryserver) eq $dom) {
1327: my $host=&hostname($tryserver);
1328: my $queryid=
1329: &reply("querysend:".&escape($query).':'.
1330: &escape($srch->{'srchby'}).':'.
1331: &escape($srch->{'srchtype'}).':'.
1332: &escape($srch->{'srchterm'}),$tryserver);
1333: if ($queryid !~/^\Q$host\E\_/) {
1334: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1335: next;
1336: }
1337: my $reply = &get_query_reply($queryid);
1338: my $maxtries = 1;
1339: my $tries = 1;
1340: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1341: $reply = &get_query_reply($queryid);
1342: $tries ++;
1343: }
1344: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1345: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1346: } else {
1347: my @matches;
1348: if ($reply =~ /\n/) {
1349: @matches = split(/\n/,$reply);
1350: } else {
1351: @matches = split(/\&/,$reply);
1352: }
1353: foreach my $match (@matches) {
1354: my ($uname,$udom,%userhash);
1355: foreach my $entry (split(/:/,$match)) {
1356: my ($key,$value) =
1357: map {&unescape($_);} split(/=/,$entry);
1358: $userhash{$key} = $value;
1359: if ($key eq 'username') {
1360: $uname = $value;
1361: } elsif ($key eq 'domain') {
1362: $udom = $value;
1363: }
1364: }
1365: $results{$uname.':'.$udom} = \%userhash;
1366: }
1367: }
1368: }
1369: }
1370: return %results;
1371: }
1372:
1373: sub get_instuser {
1374: my ($udom,$uname,$id) = @_;
1375: my $homeserver = &domain($udom,'primary');
1376: my ($outcome,%results);
1377: if ($homeserver ne '') {
1378: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1379: &escape($id).':'.&escape($udom),$homeserver);
1380: my $host=&hostname($homeserver);
1381: if ($queryid !~/^\Q$host\E\_/) {
1382: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1383: return;
1384: }
1385: my $response = &get_query_reply($queryid);
1386: my $maxtries = 5;
1387: my $tries = 1;
1388: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1389: $response = &get_query_reply($queryid);
1390: $tries ++;
1391: }
1392: if (!&error($response) && $response ne 'refused') {
1393: if ($response eq 'unavailable') {
1394: $outcome = $response;
1395: } else {
1396: $outcome = 'ok';
1397: my @matches = split(/\n/,$response);
1398: foreach my $match (@matches) {
1399: my ($key,$value) = split(/=/,$match);
1400: $results{&unescape($key)} = &thaw_unescape($value);
1401: }
1402: }
1403: }
1404: }
1405: my %userinfo;
1406: if (ref($results{$uname}) eq 'HASH') {
1407: %userinfo = %{$results{$uname}};
1408: }
1409: return ($outcome,%userinfo);
1410: }
1411:
1412: sub inst_rulecheck {
1413: my ($udom,$uname,$id,$item,$rules) = @_;
1414: my %returnhash;
1415: if ($udom ne '') {
1416: if (ref($rules) eq 'ARRAY') {
1417: @{$rules} = map {&escape($_);} (@{$rules});
1418: my $rulestr = join(':',@{$rules});
1419: my $homeserver=&domain($udom,'primary');
1420: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1421: my $response;
1422: if ($item eq 'username') {
1423: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1424: ':'.&escape($uname).':'.$rulestr,
1425: $homeserver));
1426: } elsif ($item eq 'id') {
1427: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1428: ':'.&escape($id).':'.$rulestr,
1429: $homeserver));
1430: } elsif ($item eq 'selfcreate') {
1431: $response=&unescape(&reply('instselfcreatecheck:'.
1432: &escape($udom).':'.&escape($uname).
1433: ':'.$rulestr,$homeserver));
1434: }
1435: if ($response ne 'refused') {
1436: my @pairs=split(/\&/,$response);
1437: foreach my $item (@pairs) {
1438: my ($key,$value)=split(/=/,$item,2);
1439: $key = &unescape($key);
1440: next if ($key =~ /^error: 2 /);
1441: $returnhash{$key}=&thaw_unescape($value);
1442: }
1443: }
1444: }
1445: }
1446: }
1447: return %returnhash;
1448: }
1449:
1450: sub inst_userrules {
1451: my ($udom,$check) = @_;
1452: my (%ruleshash,@ruleorder);
1453: if ($udom ne '') {
1454: my $homeserver=&domain($udom,'primary');
1455: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1456: my $response;
1457: if ($check eq 'id') {
1458: $response=&reply('instidrules:'.&escape($udom),
1459: $homeserver);
1460: } elsif ($check eq 'email') {
1461: $response=&reply('instemailrules:'.&escape($udom),
1462: $homeserver);
1463: } else {
1464: $response=&reply('instuserrules:'.&escape($udom),
1465: $homeserver);
1466: }
1467: if (($response ne 'refused') && ($response ne 'error') &&
1468: ($response ne 'unknown_cmd') &&
1469: ($response ne 'no_such_host')) {
1470: my ($hashitems,$orderitems) = split(/:/,$response);
1471: my @pairs=split(/\&/,$hashitems);
1472: foreach my $item (@pairs) {
1473: my ($key,$value)=split(/=/,$item,2);
1474: $key = &unescape($key);
1475: next if ($key =~ /^error: 2 /);
1476: $ruleshash{$key}=&thaw_unescape($value);
1477: }
1478: my @esc_order = split(/\&/,$orderitems);
1479: foreach my $item (@esc_order) {
1480: push(@ruleorder,&unescape($item));
1481: }
1482: }
1483: }
1484: }
1485: return (\%ruleshash,\@ruleorder);
1486: }
1487:
1488: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1489:
1490: sub get_domain_defaults {
1491: my ($domain) = @_;
1492: my $cachetime = 60*60*24;
1493: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1494: if (defined($cached)) {
1495: if (ref($result) eq 'HASH') {
1496: return %{$result};
1497: }
1498: }
1499: my %domdefaults;
1500: my %domconfig =
1501: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1502: 'requestcourses','inststatus',
1503: 'coursedefaults','usersessions'],$domain);
1504: if (ref($domconfig{'defaults'}) eq 'HASH') {
1505: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1506: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1507: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1508: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1509: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1510: } else {
1511: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1512: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1513: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1514: }
1515: if (ref($domconfig{'quotas'}) eq 'HASH') {
1516: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1517: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1518: } else {
1519: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1520: }
1521: my @usertools = ('aboutme','blog','portfolio');
1522: foreach my $item (@usertools) {
1523: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1524: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1525: }
1526: }
1527: }
1528: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1529: foreach my $item ('official','unofficial','community') {
1530: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1531: }
1532: }
1533: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1534: foreach my $item ('inststatustypes','inststatusorder') {
1535: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1536: }
1537: }
1538: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1539: foreach my $item ('canuse_pdfforms') {
1540: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1541: }
1542: }
1543: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1544: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1545: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1546: }
1547: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1548: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1549: }
1550: }
1551: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1552: $cachetime);
1553: return %domdefaults;
1554: }
1555:
1556: # --------------------------------------------------- Assign a key to a student
1557:
1558: sub assign_access_key {
1559: #
1560: # a valid key looks like uname:udom#comments
1561: # comments are being appended
1562: #
1563: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1564: $kdom=
1565: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1566: $knum=
1567: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1568: $cdom=
1569: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1570: $cnum=
1571: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1572: $udom=$env{'user.name'} unless (defined($udom));
1573: $uname=$env{'user.domain'} unless (defined($uname));
1574: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1575: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1576: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1577: # assigned to this person
1578: # - this should not happen,
1579: # unless something went wrong
1580: # the first time around
1581: # ready to assign
1582: $logentry=$1.'; '.$logentry;
1583: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1584: $kdom,$knum) eq 'ok') {
1585: # key now belongs to user
1586: my $envkey='key.'.$cdom.'_'.$cnum;
1587: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1588: &appenv({'environment.'.$envkey => $ckey});
1589: return 'ok';
1590: } else {
1591: return
1592: 'error: Count not permanently assign key, will need to be re-entered later.';
1593: }
1594: } else {
1595: return 'error: Could not assign key, try again later.';
1596: }
1597: } elsif (!$existing{$ckey}) {
1598: # the key does not exist
1599: return 'error: The key does not exist';
1600: } else {
1601: # the key is somebody else's
1602: return 'error: The key is already in use';
1603: }
1604: }
1605:
1606: # ------------------------------------------ put an additional comment on a key
1607:
1608: sub comment_access_key {
1609: #
1610: # a valid key looks like uname:udom#comments
1611: # comments are being appended
1612: #
1613: my ($ckey,$cdom,$cnum,$logentry)=@_;
1614: $cdom=
1615: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1616: $cnum=
1617: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1618: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1619: if ($existing{$ckey}) {
1620: $existing{$ckey}.='; '.$logentry;
1621: # ready to assign
1622: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1623: $cdom,$cnum) eq 'ok') {
1624: return 'ok';
1625: } else {
1626: return 'error: Count not store comment.';
1627: }
1628: } else {
1629: # the key does not exist
1630: return 'error: The key does not exist';
1631: }
1632: }
1633:
1634: # ------------------------------------------------------ Generate a set of keys
1635:
1636: sub generate_access_keys {
1637: my ($number,$cdom,$cnum,$logentry)=@_;
1638: $cdom=
1639: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1640: $cnum=
1641: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1642: unless (&allowed('mky',$cdom)) { return 0; }
1643: unless (($cdom) && ($cnum)) { return 0; }
1644: if ($number>10000) { return 0; }
1645: sleep(2); # make sure don't get same seed twice
1646: srand(time()^($$+($$<<15))); # from "Programming Perl"
1647: my $total=0;
1648: for (my $i=1;$i<=$number;$i++) {
1649: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1650: sprintf("%lx",int(100000*rand)).'-'.
1651: sprintf("%lx",int(100000*rand));
1652: $newkey=~s/1/g/g; # folks mix up 1 and l
1653: $newkey=~s/0/h/g; # and also 0 and O
1654: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1655: if ($existing{$newkey}) {
1656: $i--;
1657: } else {
1658: if (&put('accesskeys',
1659: { $newkey => '# generated '.localtime().
1660: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1661: '; '.$logentry },
1662: $cdom,$cnum) eq 'ok') {
1663: $total++;
1664: }
1665: }
1666: }
1667: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1668: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1669: return $total;
1670: }
1671:
1672: # ------------------------------------------------------- Validate an accesskey
1673:
1674: sub validate_access_key {
1675: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1676: $cdom=
1677: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1678: $cnum=
1679: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1680: $udom=$env{'user.domain'} unless (defined($udom));
1681: $uname=$env{'user.name'} unless (defined($uname));
1682: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1683: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1684: }
1685:
1686: # ------------------------------------- Find the section of student in a course
1687: sub devalidate_getsection_cache {
1688: my ($udom,$unam,$courseid)=@_;
1689: my $hashid="$udom:$unam:$courseid";
1690: &devalidate_cache_new('getsection',$hashid);
1691: }
1692:
1693: sub courseid_to_courseurl {
1694: my ($courseid) = @_;
1695: #already url style courseid
1696: return $courseid if ($courseid =~ m{^/});
1697:
1698: if (exists($env{'course.'.$courseid.'.num'})) {
1699: my $cnum = $env{'course.'.$courseid.'.num'};
1700: my $cdom = $env{'course.'.$courseid.'.domain'};
1701: return "/$cdom/$cnum";
1702: }
1703:
1704: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1705: if (exists($courseinfo{'num'})) {
1706: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1707: }
1708:
1709: return undef;
1710: }
1711:
1712: sub getsection {
1713: my ($udom,$unam,$courseid)=@_;
1714: my $cachetime=1800;
1715:
1716: my $hashid="$udom:$unam:$courseid";
1717: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1718: if (defined($cached)) { return $result; }
1719:
1720: my %Pending;
1721: my %Expired;
1722: #
1723: # Each role can either have not started yet (pending), be active,
1724: # or have expired.
1725: #
1726: # If there is an active role, we are done.
1727: #
1728: # If there is more than one role which has not started yet,
1729: # choose the one which will start sooner
1730: # If there is one role which has not started yet, return it.
1731: #
1732: # If there is more than one expired role, choose the one which ended last.
1733: # If there is a role which has expired, return it.
1734: #
1735: $courseid = &courseid_to_courseurl($courseid);
1736: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1737: foreach my $key (keys(%roleshash)) {
1738: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1739: my $section=$1;
1740: if ($key eq $courseid.'_st') { $section=''; }
1741: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1742: my $now=time;
1743: if (defined($end) && $end && ($now > $end)) {
1744: $Expired{$end}=$section;
1745: next;
1746: }
1747: if (defined($start) && $start && ($now < $start)) {
1748: $Pending{$start}=$section;
1749: next;
1750: }
1751: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1752: }
1753: #
1754: # Presumedly there will be few matching roles from the above
1755: # loop and the sorting time will be negligible.
1756: if (scalar(keys(%Pending))) {
1757: my ($time) = sort {$a <=> $b} keys(%Pending);
1758: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1759: }
1760: if (scalar(keys(%Expired))) {
1761: my @sorted = sort {$a <=> $b} keys(%Expired);
1762: my $time = pop(@sorted);
1763: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1764: }
1765: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1766: }
1767:
1768: sub save_cache {
1769: &purge_remembered();
1770: #&Apache::loncommon::validate_page();
1771: undef(%env);
1772: undef($env_loaded);
1773: }
1774:
1775: my $to_remember=-1;
1776: my %remembered;
1777: my %accessed;
1778: my $kicks=0;
1779: my $hits=0;
1780: sub make_key {
1781: my ($name,$id) = @_;
1782: if (length($id) > 65
1783: && length(&escape($id)) > 200) {
1784: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1785: }
1786: return &escape($name.':'.$id);
1787: }
1788:
1789: sub devalidate_cache_new {
1790: my ($name,$id,$debug) = @_;
1791: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1792: $id=&make_key($name,$id);
1793: $memcache->delete($id);
1794: delete($remembered{$id});
1795: delete($accessed{$id});
1796: }
1797:
1798: sub is_cached_new {
1799: my ($name,$id,$debug) = @_;
1800: $id=&make_key($name,$id);
1801: if (exists($remembered{$id})) {
1802: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1803: $accessed{$id}=[&gettimeofday()];
1804: $hits++;
1805: return ($remembered{$id},1);
1806: }
1807: my $value = $memcache->get($id);
1808: if (!(defined($value))) {
1809: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1810: return (undef,undef);
1811: }
1812: if ($value eq '__undef__') {
1813: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1814: $value=undef;
1815: }
1816: &make_room($id,$value,$debug);
1817: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1818: return ($value,1);
1819: }
1820:
1821: sub do_cache_new {
1822: my ($name,$id,$value,$time,$debug) = @_;
1823: $id=&make_key($name,$id);
1824: my $setvalue=$value;
1825: if (!defined($setvalue)) {
1826: $setvalue='__undef__';
1827: }
1828: if (!defined($time) ) {
1829: $time=600;
1830: }
1831: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1832: my $result = $memcache->set($id,$setvalue,$time);
1833: if (! $result) {
1834: &logthis("caching of id -> $id failed");
1835: $memcache->disconnect_all();
1836: }
1837: # need to make a copy of $value
1838: &make_room($id,$value,$debug);
1839: return $value;
1840: }
1841:
1842: sub make_room {
1843: my ($id,$value,$debug)=@_;
1844:
1845: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1846: : $value;
1847: if ($to_remember<0) { return; }
1848: $accessed{$id}=[&gettimeofday()];
1849: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1850: my $to_kick;
1851: my $max_time=0;
1852: foreach my $other (keys(%accessed)) {
1853: if (&tv_interval($accessed{$other}) > $max_time) {
1854: $to_kick=$other;
1855: $max_time=&tv_interval($accessed{$other});
1856: }
1857: }
1858: delete($remembered{$to_kick});
1859: delete($accessed{$to_kick});
1860: $kicks++;
1861: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1862: return;
1863: }
1864:
1865: sub purge_remembered {
1866: #&logthis("Tossing ".scalar(keys(%remembered)));
1867: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1868: undef(%remembered);
1869: undef(%accessed);
1870: }
1871: # ------------------------------------- Read an entry from a user's environment
1872:
1873: sub userenvironment {
1874: my ($udom,$unam,@what)=@_;
1875: my $items;
1876: foreach my $item (@what) {
1877: $items.=&escape($item).'&';
1878: }
1879: $items=~s/\&$//;
1880: my %returnhash=();
1881: my $uhome = &homeserver($unam,$udom);
1882: unless ($uhome eq 'no_host') {
1883: my @answer=split(/\&/,
1884: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1885: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1886: return %returnhash;
1887: }
1888: my $i;
1889: for ($i=0;$i<=$#what;$i++) {
1890: $returnhash{$what[$i]}=&unescape($answer[$i]);
1891: }
1892: }
1893: return %returnhash;
1894: }
1895:
1896: # ---------------------------------------------------------- Get a studentphoto
1897: sub studentphoto {
1898: my ($udom,$unam,$ext) = @_;
1899: my $home=&Apache::lonnet::homeserver($unam,$udom);
1900: if (defined($env{'request.course.id'})) {
1901: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1902: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1903: return(&retrievestudentphoto($udom,$unam,$ext));
1904: } else {
1905: my ($result,$perm_reqd)=
1906: &Apache::lonnet::auto_photo_permission($unam,$udom);
1907: if ($result eq 'ok') {
1908: if (!($perm_reqd eq 'yes')) {
1909: return(&retrievestudentphoto($udom,$unam,$ext));
1910: }
1911: }
1912: }
1913: }
1914: } else {
1915: my ($result,$perm_reqd) =
1916: &Apache::lonnet::auto_photo_permission($unam,$udom);
1917: if ($result eq 'ok') {
1918: if (!($perm_reqd eq 'yes')) {
1919: return(&retrievestudentphoto($udom,$unam,$ext));
1920: }
1921: }
1922: }
1923: return '/adm/lonKaputt/lonlogo_broken.gif';
1924: }
1925:
1926: sub retrievestudentphoto {
1927: my ($udom,$unam,$ext,$type) = @_;
1928: my $home=&Apache::lonnet::homeserver($unam,$udom);
1929: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1930: if ($ret eq 'ok') {
1931: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1932: if ($type eq 'thumbnail') {
1933: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1934: }
1935: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1936: return $tokenurl;
1937: } else {
1938: if ($type eq 'thumbnail') {
1939: return '/adm/lonKaputt/genericstudent_tn.gif';
1940: } else {
1941: return '/adm/lonKaputt/lonlogo_broken.gif';
1942: }
1943: }
1944: }
1945:
1946: # -------------------------------------------------------------------- New chat
1947:
1948: sub chatsend {
1949: my ($newentry,$anon,$group)=@_;
1950: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1951: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1952: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1953: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1954: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1955: &escape($newentry)).':'.$group,$chome);
1956: }
1957:
1958: # ------------------------------------------ Find current version of a resource
1959:
1960: sub getversion {
1961: my $fname=&clutter(shift);
1962: unless ($fname=~/^\/res\//) { return -1; }
1963: return ¤tversion(&filelocation('',$fname));
1964: }
1965:
1966: sub currentversion {
1967: my $fname=shift;
1968: my ($result,$cached)=&is_cached_new('resversion',$fname);
1969: if (defined($cached)) { return $result; }
1970: my $author=$fname;
1971: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1972: my ($udom,$uname)=split(/\//,$author);
1973: my $home=homeserver($uname,$udom);
1974: if ($home eq 'no_host') {
1975: return -1;
1976: }
1977: my $answer=reply("currentversion:$fname",$home);
1978: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1979: return -1;
1980: }
1981: return &do_cache_new('resversion',$fname,$answer,600);
1982: }
1983:
1984: # ----------------------------- Subscribe to a resource, return URL if possible
1985:
1986: sub subscribe {
1987: my $fname=shift;
1988: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1989: $fname=~s/[\n\r]//g;
1990: my $author=$fname;
1991: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1992: my ($udom,$uname)=split(/\//,$author);
1993: my $home=homeserver($uname,$udom);
1994: if ($home eq 'no_host') {
1995: return 'not_found';
1996: }
1997: my $answer=reply("sub:$fname",$home);
1998: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1999: $answer.=' by '.$home;
2000: }
2001: return $answer;
2002: }
2003:
2004: # -------------------------------------------------------------- Replicate file
2005:
2006: sub repcopy {
2007: my $filename=shift;
2008: $filename=~s/\/+/\//g;
2009: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2010: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2011: if ($filename=~m|^/home/httpd/html/userfiles/| or
2012: $filename=~m -^/*(uploaded|editupload)/-) {
2013: return &repcopy_userfile($filename);
2014: }
2015: $filename=~s/[\n\r]//g;
2016: my $transname="$filename.in.transfer";
2017: # FIXME: this should flock
2018: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2019: my $remoteurl=subscribe($filename);
2020: if ($remoteurl =~ /^con_lost by/) {
2021: &logthis("Subscribe returned $remoteurl: $filename");
2022: return 'unavailable';
2023: } elsif ($remoteurl eq 'not_found') {
2024: #&logthis("Subscribe returned not_found: $filename");
2025: return 'not_found';
2026: } elsif ($remoteurl =~ /^rejected by/) {
2027: &logthis("Subscribe returned $remoteurl: $filename");
2028: return 'forbidden';
2029: } elsif ($remoteurl eq 'directory') {
2030: return 'ok';
2031: } else {
2032: my $author=$filename;
2033: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2034: my ($udom,$uname)=split(/\//,$author);
2035: my $home=homeserver($uname,$udom);
2036: unless ($home eq $perlvar{'lonHostID'}) {
2037: my @parts=split(/\//,$filename);
2038: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2039: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2040: &logthis("Malconfiguration for replication: $filename");
2041: return 'bad_request';
2042: }
2043: my $count;
2044: for ($count=5;$count<$#parts;$count++) {
2045: $path.="/$parts[$count]";
2046: if ((-e $path)!=1) {
2047: mkdir($path,0777);
2048: }
2049: }
2050: my $ua=new LWP::UserAgent;
2051: my $request=new HTTP::Request('GET',"$remoteurl");
2052: my $response=$ua->request($request,$transname);
2053: if ($response->is_error()) {
2054: unlink($transname);
2055: my $message=$response->status_line;
2056: &logthis("<font color=\"blue\">WARNING:"
2057: ." LWP get: $message: $filename</font>");
2058: return 'unavailable';
2059: } else {
2060: if ($remoteurl!~/\.meta$/) {
2061: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2062: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2063: if ($mresponse->is_error()) {
2064: unlink($filename.'.meta');
2065: &logthis(
2066: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2067: }
2068: }
2069: rename($transname,$filename);
2070: return 'ok';
2071: }
2072: }
2073: }
2074: }
2075:
2076: # ------------------------------------------------ Get server side include body
2077: sub ssi_body {
2078: my ($filelink,%form)=@_;
2079: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2080: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2081: }
2082: my $output='';
2083: my $response;
2084: if ($filelink=~/^https?\:/) {
2085: ($output,$response)=&externalssi($filelink);
2086: } else {
2087: $filelink .= $filelink=~/\?/ ? '&' : '?';
2088: $filelink .= 'inhibitmenu=yes';
2089: ($output,$response)=&ssi($filelink,%form);
2090: }
2091: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2092: $output=~s/^.*?\<body[^\>]*\>//si;
2093: $output=~s/\<\/body\s*\>.*?$//si;
2094: if (wantarray) {
2095: return ($output, $response);
2096: } else {
2097: return $output;
2098: }
2099: }
2100:
2101: # --------------------------------------------------------- Server Side Include
2102:
2103: sub absolute_url {
2104: my ($host_name) = @_;
2105: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2106: if ($host_name eq '') {
2107: $host_name = $ENV{'SERVER_NAME'};
2108: }
2109: return $protocol.$host_name;
2110: }
2111:
2112: #
2113: # Server side include.
2114: # Parameters:
2115: # fn Possibly encrypted resource name/id.
2116: # form Hash that describes how the rendering should be done
2117: # and other things.
2118: # Returns:
2119: # Scalar context: The content of the response.
2120: # Array context: 2 element list of the content and the full response object.
2121: #
2122: sub ssi {
2123:
2124: my ($fn,%form)=@_;
2125: my $ua=new LWP::UserAgent;
2126: my $request;
2127:
2128: $form{'no_update_last_known'}=1;
2129: &Apache::lonenc::check_encrypt(\$fn);
2130: if (%form) {
2131: $request=new HTTP::Request('POST',&absolute_url().$fn);
2132: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2133: } else {
2134: $request=new HTTP::Request('GET',&absolute_url().$fn);
2135: }
2136:
2137: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2138: my $response=$ua->request($request);
2139:
2140: if (wantarray) {
2141: return ($response->content, $response);
2142: } else {
2143: return $response->content;
2144: }
2145: }
2146:
2147: sub externalssi {
2148: my ($url)=@_;
2149: my $ua=new LWP::UserAgent;
2150: my $request=new HTTP::Request('GET',$url);
2151: my $response=$ua->request($request);
2152: if (wantarray) {
2153: return ($response->content, $response);
2154: } else {
2155: return $response->content;
2156: }
2157: }
2158:
2159: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2160:
2161: sub allowuploaded {
2162: my ($srcurl,$url)=@_;
2163: $url=&clutter(&declutter($url));
2164: my $dir=$url;
2165: $dir=~s/\/[^\/]+$//;
2166: my %httpref=();
2167: my $httpurl=&hreflocation('',$url);
2168: $httpref{'httpref.'.$httpurl}=$srcurl;
2169: &Apache::lonnet::appenv(\%httpref);
2170: }
2171:
2172: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2173: # input: action, courseID, current domain, intended
2174: # path to file, source of file, instruction to parse file for objects,
2175: # ref to hash for embedded objects,
2176: # ref to hash for codebase of java objects.
2177: #
2178: # output: url to file (if action was uploaddoc),
2179: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2180: #
2181: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2182: # course.
2183: #
2184: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2185: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2186: # course's home server.
2187: #
2188: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2189: # be copied from $source (current location) to
2190: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2191: # and will then be copied to
2192: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2193: # course's home server.
2194: #
2195: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2196: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2197: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2198: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2199: # in course's home server.
2200: #
2201:
2202: sub process_coursefile {
2203: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
2204: my $fetchresult;
2205: my $home=&homeserver($docuname,$docudom);
2206: if ($action eq 'propagate') {
2207: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2208: $home);
2209: } else {
2210: my $fpath = '';
2211: my $fname = $file;
2212: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2213: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2214: my $filepath = &build_filepath($fpath);
2215: if ($action eq 'copy') {
2216: if ($source eq '') {
2217: $fetchresult = 'no source file';
2218: return $fetchresult;
2219: } else {
2220: my $destination = $filepath.'/'.$fname;
2221: rename($source,$destination);
2222: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2223: $home);
2224: }
2225: } elsif ($action eq 'uploaddoc') {
2226: open(my $fh,'>'.$filepath.'/'.$fname);
2227: print $fh $env{'form.'.$source};
2228: close($fh);
2229: if ($parser eq 'parse') {
2230: my $mm = new File::MMagic;
2231: my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
2232: if ($mime_type eq 'text/html') {
2233: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2234: unless ($parse_result eq 'ok') {
2235: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2236: }
2237: }
2238: }
2239: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2240: $home);
2241: if ($fetchresult eq 'ok') {
2242: return '/uploaded/'.$fpath.'/'.$fname;
2243: } else {
2244: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2245: ' to host '.$home.': '.$fetchresult);
2246: return '/adm/notfound.html';
2247: }
2248: }
2249: }
2250: unless ( $fetchresult eq 'ok') {
2251: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2252: ' to host '.$home.': '.$fetchresult);
2253: }
2254: return $fetchresult;
2255: }
2256:
2257: sub build_filepath {
2258: my ($fpath) = @_;
2259: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2260: unless ($fpath eq '') {
2261: my @parts=split('/',$fpath);
2262: foreach my $part (@parts) {
2263: $filepath.= '/'.$part;
2264: if ((-e $filepath)!=1) {
2265: mkdir($filepath,0777);
2266: }
2267: }
2268: }
2269: return $filepath;
2270: }
2271:
2272: sub store_edited_file {
2273: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2274: my $file = $primary_url;
2275: $file =~ s#^/uploaded/$docudom/$docuname/##;
2276: my $fpath = '';
2277: my $fname = $file;
2278: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2279: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2280: my $filepath = &build_filepath($fpath);
2281: open(my $fh,'>'.$filepath.'/'.$fname);
2282: print $fh $content;
2283: close($fh);
2284: my $home=&homeserver($docuname,$docudom);
2285: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2286: $home);
2287: if ($$fetchresult eq 'ok') {
2288: return '/uploaded/'.$fpath.'/'.$fname;
2289: } else {
2290: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2291: ' to host '.$home.': '.$$fetchresult);
2292: return '/adm/notfound.html';
2293: }
2294: }
2295:
2296: sub clean_filename {
2297: my ($fname,$args)=@_;
2298: # Replace Windows backslashes by forward slashes
2299: $fname=~s/\\/\//g;
2300: if (!$args->{'keep_path'}) {
2301: # Get rid of everything but the actual filename
2302: $fname=~s/^.*\/([^\/]+)$/$1/;
2303: }
2304: # Replace spaces by underscores
2305: $fname=~s/\s+/\_/g;
2306: # Replace all other weird characters by nothing
2307: $fname=~s{[^/\w\.\-]}{}g;
2308: # Replace all .\d. sequences with _\d. so they no longer look like version
2309: # numbers
2310: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2311: return $fname;
2312: }
2313: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2314: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2315: # image with the same aspect ratio as the original, but with dimensions which do
2316: # not exceed $resizewidth and $resizeheight.
2317:
2318: sub resizeImage {
2319: my ($img_path,$resizewidth,$resizeheight) = @_;
2320: my $ima = Image::Magick->new;
2321: my $resized;
2322: if (-e $img_path) {
2323: $ima->Read($img_path);
2324: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2325: my $width = $ima->Get('width');
2326: my $height = $ima->Get('height');
2327: if ($width > $resizewidth) {
2328: my $factor = $width/$resizewidth;
2329: my $newheight = $height/$factor;
2330: $ima->Scale(width=>$resizewidth,height=>$newheight);
2331: $resized = 1;
2332: }
2333: }
2334: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2335: my $width = $ima->Get('width');
2336: my $height = $ima->Get('height');
2337: if ($height > $resizeheight) {
2338: my $factor = $height/$resizeheight;
2339: my $newwidth = $width/$factor;
2340: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2341: $resized = 1;
2342: }
2343: }
2344: if ($resized) {
2345: $ima->Write($img_path);
2346: }
2347: }
2348: return;
2349: }
2350:
2351: # --------------- Take an uploaded file and put it into the userfiles directory
2352: # input: $formname - the contents of the file are in $env{"form.$formname"}
2353: # the desired filenam is in $env{"form.$formname.filename"}
2354: # $coursedoc - if true up to the current course
2355: # if false
2356: # $subdir - directory in userfile to store the file into
2357: # $parser - instruction to parse file for objects ($parser = parse)
2358: # $allfiles - reference to hash for embedded objects
2359: # $codebase - reference to hash for codebase of java objects
2360: # $desuname - username for permanent storage of uploaded file
2361: # $dsetudom - domain for permanaent storage of uploaded file
2362: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2363: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2364: # $resizewidth - width (pixels) to which to resize uploaded image
2365: # $resizeheight - height (pixels) to which to resize uploaded image
2366: #
2367: # output: url of file in userspace, or error: <message>
2368: # or /adm/notfound.html if failure to upload occurse
2369:
2370: sub userfileupload {
2371: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2372: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight)=@_;
2373: if (!defined($subdir)) { $subdir='unknown'; }
2374: my $fname=$env{'form.'.$formname.'.filename'};
2375: $fname=&clean_filename($fname);
2376: # See if there is anything left
2377: unless ($fname) { return 'error: no uploaded file'; }
2378: chop($env{'form.'.$formname});
2379: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2380: my $now = time;
2381: my $filepath = 'tmp/helprequests/'.$now;
2382: my @parts=split(/\//,$filepath);
2383: my $fullpath = $perlvar{'lonDaemons'};
2384: for (my $i=0;$i<@parts;$i++) {
2385: $fullpath .= '/'.$parts[$i];
2386: if ((-e $fullpath)!=1) {
2387: mkdir($fullpath,0777);
2388: }
2389: }
2390: open(my $fh,'>'.$fullpath.'/'.$fname);
2391: print $fh $env{'form.'.$formname};
2392: close($fh);
2393: return $fullpath.'/'.$fname;
2394: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2395: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2396: '_'.$env{'user.domain'}.'/pending';
2397: my @parts=split(/\//,$filepath);
2398: my $fullpath = $perlvar{'lonDaemons'};
2399: for (my $i=0;$i<@parts;$i++) {
2400: $fullpath .= '/'.$parts[$i];
2401: if ((-e $fullpath)!=1) {
2402: mkdir($fullpath,0777);
2403: }
2404: }
2405: open(my $fh,'>'.$fullpath.'/'.$fname);
2406: print $fh $env{'form.'.$formname};
2407: close($fh);
2408: return $fullpath.'/'.$fname;
2409: }
2410: if ($subdir eq 'scantron') {
2411: $fname = 'scantron_orig_'.$fname;
2412: } else {
2413: # Create the directory if not present
2414: $fname="$subdir/$fname";
2415: }
2416: if ($coursedoc) {
2417: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2418: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2419: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2420: return &finishuserfileupload($docuname,$docudom,
2421: $formname,$fname,$parser,$allfiles,
2422: $codebase,$thumbwidth,$thumbheight,
2423: $resizewidth,$resizeheight);
2424: } else {
2425: $fname=$env{'form.folder'}.'/'.$fname;
2426: return &process_coursefile('uploaddoc',$docuname,$docudom,
2427: $fname,$formname,$parser,
2428: $allfiles,$codebase);
2429: }
2430: } elsif (defined($destuname)) {
2431: my $docuname=$destuname;
2432: my $docudom=$destudom;
2433: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2434: $parser,$allfiles,$codebase,
2435: $thumbwidth,$thumbheight,
2436: $resizewidth,$resizeheight);
2437:
2438: } else {
2439: my $docuname=$env{'user.name'};
2440: my $docudom=$env{'user.domain'};
2441: if (exists($env{'form.group'})) {
2442: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2443: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2444: }
2445: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2446: $parser,$allfiles,$codebase,
2447: $thumbwidth,$thumbheight,
2448: $resizewidth,$resizeheight);
2449: }
2450: }
2451:
2452: sub finishuserfileupload {
2453: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2454: $thumbwidth,$thumbheight,$resizewidth,$resizeheight) = @_;
2455: my $path=$docudom.'/'.$docuname.'/';
2456: my $filepath=$perlvar{'lonDocRoot'};
2457:
2458: my ($fnamepath,$file,$fetchthumb);
2459: $file=$fname;
2460: if ($fname=~m|/|) {
2461: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2462: $path.=$fnamepath.'/';
2463: }
2464: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2465: my $count;
2466: for ($count=4;$count<=$#parts;$count++) {
2467: $filepath.="/$parts[$count]";
2468: if ((-e $filepath)!=1) {
2469: mkdir($filepath,0777);
2470: }
2471: }
2472:
2473: # Save the file
2474: {
2475: if (!open(FH,'>'.$filepath.'/'.$file)) {
2476: &logthis('Failed to create '.$filepath.'/'.$file);
2477: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2478: return '/adm/notfound.html';
2479: }
2480: if (!print FH ($env{'form.'.$formname})) {
2481: &logthis('Failed to write to '.$filepath.'/'.$file);
2482: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2483: return '/adm/notfound.html';
2484: }
2485: close(FH);
2486: if ($resizewidth && $resizeheight) {
2487: my $mm = new File::MMagic;
2488: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2489: if ($mime_type =~ m{^image/}) {
2490: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2491: }
2492: }
2493: }
2494: if ($parser eq 'parse') {
2495: my $mm = new File::MMagic;
2496: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2497: if ($mime_type eq 'text/html') {
2498: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2499: $allfiles,$codebase);
2500: unless ($parse_result eq 'ok') {
2501: &logthis('Failed to parse '.$filepath.$file.
2502: ' for embedded media: '.$parse_result);
2503: }
2504: }
2505: }
2506: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2507: my $input = $filepath.'/'.$file;
2508: my $output = $filepath.'/'.'tn-'.$file;
2509: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2510: system("convert -sample $thumbsize $input $output");
2511: if (-e $filepath.'/'.'tn-'.$file) {
2512: $fetchthumb = 1;
2513: }
2514: }
2515:
2516: # Notify homeserver to grep it
2517: #
2518: my $docuhome=&homeserver($docuname,$docudom);
2519: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2520: if ($fetchresult eq 'ok') {
2521: if ($fetchthumb) {
2522: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2523: if ($thumbresult ne 'ok') {
2524: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2525: $docuhome.': '.$thumbresult);
2526: }
2527: }
2528: #
2529: # Return the URL to it
2530: return '/uploaded/'.$path.$file;
2531: } else {
2532: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2533: ': '.$fetchresult);
2534: return '/adm/notfound.html';
2535: }
2536: }
2537:
2538: sub extract_embedded_items {
2539: my ($fullpath,$allfiles,$codebase,$content) = @_;
2540: my @state = ();
2541: my %javafiles = (
2542: codebase => '',
2543: code => '',
2544: archive => ''
2545: );
2546: my %mediafiles = (
2547: src => '',
2548: movie => '',
2549: );
2550: my $p;
2551: if ($content) {
2552: $p = HTML::LCParser->new($content);
2553: } else {
2554: $p = HTML::LCParser->new($fullpath);
2555: }
2556: while (my $t=$p->get_token()) {
2557: if ($t->[0] eq 'S') {
2558: my ($tagname, $attr) = ($t->[1],$t->[2]);
2559: push(@state, $tagname);
2560: if (lc($tagname) eq 'allow') {
2561: &add_filetype($allfiles,$attr->{'src'},'src');
2562: }
2563: if (lc($tagname) eq 'img') {
2564: &add_filetype($allfiles,$attr->{'src'},'src');
2565: }
2566: if (lc($tagname) eq 'a') {
2567: &add_filetype($allfiles,$attr->{'href'},'href');
2568: }
2569: if (lc($tagname) eq 'script') {
2570: if ($attr->{'archive'} =~ /\.jar$/i) {
2571: &add_filetype($allfiles,$attr->{'archive'},'archive');
2572: } else {
2573: &add_filetype($allfiles,$attr->{'src'},'src');
2574: }
2575: }
2576: if (lc($tagname) eq 'link') {
2577: if (lc($attr->{'rel'}) eq 'stylesheet') {
2578: &add_filetype($allfiles,$attr->{'href'},'href');
2579: }
2580: }
2581: if (lc($tagname) eq 'object' ||
2582: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2583: foreach my $item (keys(%javafiles)) {
2584: $javafiles{$item} = '';
2585: }
2586: }
2587: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2588: my $name = lc($attr->{'name'});
2589: foreach my $item (keys(%javafiles)) {
2590: if ($name eq $item) {
2591: $javafiles{$item} = $attr->{'value'};
2592: last;
2593: }
2594: }
2595: foreach my $item (keys(%mediafiles)) {
2596: if ($name eq $item) {
2597: &add_filetype($allfiles, $attr->{'value'}, 'value');
2598: last;
2599: }
2600: }
2601: }
2602: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2603: foreach my $item (keys(%javafiles)) {
2604: if ($attr->{$item}) {
2605: $javafiles{$item} = $attr->{$item};
2606: last;
2607: }
2608: }
2609: foreach my $item (keys(%mediafiles)) {
2610: if ($attr->{$item}) {
2611: &add_filetype($allfiles,$attr->{$item},$item);
2612: last;
2613: }
2614: }
2615: }
2616: } elsif ($t->[0] eq 'E') {
2617: my ($tagname) = ($t->[1]);
2618: if ($javafiles{'codebase'} ne '') {
2619: $javafiles{'codebase'} .= '/';
2620: }
2621: if (lc($tagname) eq 'applet' ||
2622: lc($tagname) eq 'object' ||
2623: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2624: ) {
2625: foreach my $item (keys(%javafiles)) {
2626: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2627: my $file=$javafiles{'codebase'}.$javafiles{$item};
2628: &add_filetype($allfiles,$file,$item);
2629: }
2630: }
2631: }
2632: pop @state;
2633: }
2634: }
2635: return 'ok';
2636: }
2637:
2638: sub add_filetype {
2639: my ($allfiles,$file,$type)=@_;
2640: if (exists($allfiles->{$file})) {
2641: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2642: push(@{$allfiles->{$file}}, &escape($type));
2643: }
2644: } else {
2645: @{$allfiles->{$file}} = (&escape($type));
2646: }
2647: }
2648:
2649: sub removeuploadedurl {
2650: my ($url)=@_;
2651: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2652: return &removeuserfile($uname,$udom,$fname);
2653: }
2654:
2655: sub removeuserfile {
2656: my ($docuname,$docudom,$fname)=@_;
2657: my $home=&homeserver($docuname,$docudom);
2658: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2659: if ($result eq 'ok') {
2660: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2661: my $metafile = $fname.'.meta';
2662: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2663: my $url = "/uploaded/$docudom/$docuname/$fname";
2664: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2665: my $sqlresult =
2666: &update_portfolio_table($docuname,$docudom,$file,
2667: 'portfolio_metadata',$group,
2668: 'delete');
2669: }
2670: }
2671: return $result;
2672: }
2673:
2674: sub mkdiruserfile {
2675: my ($docuname,$docudom,$dir)=@_;
2676: my $home=&homeserver($docuname,$docudom);
2677: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2678: }
2679:
2680: sub renameuserfile {
2681: my ($docuname,$docudom,$old,$new)=@_;
2682: my $home=&homeserver($docuname,$docudom);
2683: my $result = &reply("renameuserfile:$docudom:$docuname:".
2684: &escape("$old").':'.&escape("$new"),$home);
2685: if ($result eq 'ok') {
2686: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2687: my $oldmeta = $old.'.meta';
2688: my $newmeta = $new.'.meta';
2689: my $metaresult =
2690: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2691: my $url = "/uploaded/$docudom/$docuname/$old";
2692: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2693: my $sqlresult =
2694: &update_portfolio_table($docuname,$docudom,$file,
2695: 'portfolio_metadata',$group,
2696: 'delete');
2697: }
2698: }
2699: return $result;
2700: }
2701:
2702: # ------------------------------------------------------------------------- Log
2703:
2704: sub log {
2705: my ($dom,$nam,$hom,$what)=@_;
2706: return critical("log:$dom:$nam:$what",$hom);
2707: }
2708:
2709: # ------------------------------------------------------------------ Course Log
2710: #
2711: # This routine flushes several buffers of non-mission-critical nature
2712: #
2713:
2714: sub flushcourselogs {
2715: &logthis('Flushing log buffers');
2716: #
2717: # course logs
2718: # This is a log of all transactions in a course, which can be used
2719: # for data mining purposes
2720: #
2721: # It also collects the courseid database, which lists last transaction
2722: # times and course titles for all courseids
2723: #
2724: my %courseidbuffer=();
2725: foreach my $crsid (keys(%courselogs)) {
2726: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2727: &escape($courselogs{$crsid}),
2728: $coursehombuf{$crsid}) eq 'ok') {
2729: delete $courselogs{$crsid};
2730: } else {
2731: &logthis('Failed to flush log buffer for '.$crsid);
2732: if (length($courselogs{$crsid})>40000) {
2733: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2734: " exceeded maximum size, deleting.</font>");
2735: delete $courselogs{$crsid};
2736: }
2737: }
2738: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2739: 'description' => $coursedescrbuf{$crsid},
2740: 'inst_code' => $courseinstcodebuf{$crsid},
2741: 'type' => $coursetypebuf{$crsid},
2742: 'owner' => $courseownerbuf{$crsid},
2743: };
2744: }
2745: #
2746: # Write course id database (reverse lookup) to homeserver of courses
2747: # Is used in pickcourse
2748: #
2749: foreach my $crs_home (keys(%courseidbuffer)) {
2750: my $response = &courseidput(&host_domain($crs_home),
2751: $courseidbuffer{$crs_home},
2752: $crs_home,'timeonly');
2753: }
2754: #
2755: # File accesses
2756: # Writes to the dynamic metadata of resources to get hit counts, etc.
2757: #
2758: foreach my $entry (keys(%accesshash)) {
2759: if ($entry =~ /___count$/) {
2760: my ($dom,$name);
2761: ($dom,$name,undef)=
2762: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2763: if (! defined($dom) || $dom eq '' ||
2764: ! defined($name) || $name eq '') {
2765: my $cid = $env{'request.course.id'};
2766: $dom = $env{'request.'.$cid.'.domain'};
2767: $name = $env{'request.'.$cid.'.num'};
2768: }
2769: my $value = $accesshash{$entry};
2770: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2771: my %temphash=($url => $value);
2772: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2773: if ($result eq 'ok') {
2774: delete $accesshash{$entry};
2775: } elsif ($result eq 'unknown_cmd') {
2776: # Target server has old code running on it.
2777: my %temphash=($entry => $value);
2778: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2779: delete $accesshash{$entry};
2780: }
2781: }
2782: } else {
2783: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2784: my %temphash=($entry => $accesshash{$entry});
2785: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2786: delete $accesshash{$entry};
2787: }
2788: }
2789: }
2790: #
2791: # Roles
2792: # Reverse lookup of user roles for course faculty/staff and co-authorship
2793: #
2794: foreach my $entry (keys(%userrolehash)) {
2795: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2796: split(/\:/,$entry);
2797: if (&Apache::lonnet::put('nohist_userroles',
2798: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2799: $rudom,$runame) eq 'ok') {
2800: delete $userrolehash{$entry};
2801: }
2802: }
2803: #
2804: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2805: #
2806: my %domrolebuffer = ();
2807: foreach my $entry (keys(%domainrolehash)) {
2808: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2809: if ($domrolebuffer{$rudom}) {
2810: $domrolebuffer{$rudom}.='&'.&escape($entry).
2811: '='.&escape($domainrolehash{$entry});
2812: } else {
2813: $domrolebuffer{$rudom}.=&escape($entry).
2814: '='.&escape($domainrolehash{$entry});
2815: }
2816: delete $domainrolehash{$entry};
2817: }
2818: foreach my $dom (keys(%domrolebuffer)) {
2819: my %servers = &get_servers($dom,'library');
2820: foreach my $tryserver (keys(%servers)) {
2821: unless (&reply('domroleput:'.$dom.':'.
2822: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2823: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2824: }
2825: }
2826: }
2827: $dumpcount++;
2828: }
2829:
2830: sub courselog {
2831: my $what=shift;
2832: $what=time.':'.$what;
2833: unless ($env{'request.course.id'}) { return ''; }
2834: $coursedombuf{$env{'request.course.id'}}=
2835: $env{'course.'.$env{'request.course.id'}.'.domain'};
2836: $coursenumbuf{$env{'request.course.id'}}=
2837: $env{'course.'.$env{'request.course.id'}.'.num'};
2838: $coursehombuf{$env{'request.course.id'}}=
2839: $env{'course.'.$env{'request.course.id'}.'.home'};
2840: $coursedescrbuf{$env{'request.course.id'}}=
2841: $env{'course.'.$env{'request.course.id'}.'.description'};
2842: $courseinstcodebuf{$env{'request.course.id'}}=
2843: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2844: $courseownerbuf{$env{'request.course.id'}}=
2845: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2846: $coursetypebuf{$env{'request.course.id'}}=
2847: $env{'course.'.$env{'request.course.id'}.'.type'};
2848: if (defined $courselogs{$env{'request.course.id'}}) {
2849: $courselogs{$env{'request.course.id'}}.='&'.$what;
2850: } else {
2851: $courselogs{$env{'request.course.id'}}.=$what;
2852: }
2853: if (length($courselogs{$env{'request.course.id'}})>4048) {
2854: &flushcourselogs();
2855: }
2856: }
2857:
2858: sub courseacclog {
2859: my $fnsymb=shift;
2860: unless ($env{'request.course.id'}) { return ''; }
2861: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2862: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2863: $what.=':POST';
2864: # FIXME: Probably ought to escape things....
2865: foreach my $key (keys(%env)) {
2866: if ($key=~/^form\.(.*)/) {
2867: my $formitem = $1;
2868: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2869: $what.=':'.$formitem.'='.$env{$key};
2870: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2871: $what.=':'.$formitem.'='.$env{$key};
2872: }
2873: }
2874: }
2875: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2876: # FIXME: We should not be depending on a form parameter that someone
2877: # editing lonsearchcat.pm might change in the future.
2878: if ($env{'form.phase'} eq 'course_search') {
2879: $what.= ':POST';
2880: # FIXME: Probably ought to escape things....
2881: foreach my $element ('courseexp','crsfulltext','crsrelated',
2882: 'crsdiscuss') {
2883: $what.=':'.$element.'='.$env{'form.'.$element};
2884: }
2885: }
2886: }
2887: &courselog($what);
2888: }
2889:
2890: sub countacc {
2891: my $url=&declutter(shift);
2892: return if (! defined($url) || $url eq '');
2893: unless ($env{'request.course.id'}) { return ''; }
2894: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2895: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2896: $accesshash{$key}++;
2897: }
2898:
2899: sub linklog {
2900: my ($from,$to)=@_;
2901: $from=&declutter($from);
2902: $to=&declutter($to);
2903: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2904: $accesshash{$to.'___'.$from.'___goto'}=1;
2905: }
2906:
2907: sub userrolelog {
2908: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2909: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2910: ($trole=~/^in/) || ($trole=~/^cc/) ||
2911: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2912: ($trole=~/^ta/) || ($trole=~/^co/)) {
2913: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2914: $userrolehash
2915: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2916: =$tend.':'.$tstart;
2917: }
2918: if (($env{'request.role'} =~ /dc\./) &&
2919: (($trole=~/^au/) || ($trole=~/^in/) ||
2920: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2921: ($trole=~/^cr/) || ($trole=~/^ta/) ||
2922: ($trole=~/^co/))) {
2923: $userrolehash
2924: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2925: =$tend.':'.$tstart;
2926: }
2927: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2928: ($trole=~/^li/) || ($trole=~/^li/) ||
2929: ($trole=~/^au/) || ($trole=~/^dg/) ||
2930: ($trole=~/^sc/)) {
2931: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2932: $domainrolehash
2933: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2934: = $tend.':'.$tstart;
2935: }
2936: }
2937:
2938: sub courserolelog {
2939: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2940: if (($trole eq 'cc') || ($trole eq 'in') ||
2941: ($trole eq 'ep') || ($trole eq 'ad') ||
2942: ($trole eq 'ta') || ($trole eq 'st') ||
2943: ($trole=~/^cr/) || ($trole eq 'gr') ||
2944: ($trole eq 'co')) {
2945: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2946: my $cdom = $1;
2947: my $cnum = $2;
2948: my $sec = $3;
2949: my $namespace = 'rolelog';
2950: my %storehash = (
2951: role => $trole,
2952: start => $tstart,
2953: end => $tend,
2954: selfenroll => $selfenroll,
2955: context => $context,
2956: );
2957: if ($trole eq 'gr') {
2958: $namespace = 'groupslog';
2959: $storehash{'group'} = $sec;
2960: } else {
2961: $storehash{'section'} = $sec;
2962: }
2963: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2964: if (($trole ne 'st') || ($sec ne '')) {
2965: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2966: }
2967: }
2968: }
2969: return;
2970: }
2971:
2972: sub get_course_adv_roles {
2973: my ($cid,$codes) = @_;
2974: $cid=$env{'request.course.id'} unless (defined($cid));
2975: my %coursehash=&coursedescription($cid);
2976: my $crstype = &Apache::loncommon::course_type($cid);
2977: my %nothide=();
2978: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2979: if ($user !~ /:/) {
2980: $nothide{join(':',split(/[\@]/,$user))}=1;
2981: } else {
2982: $nothide{$user}=1;
2983: }
2984: }
2985: my %returnhash=();
2986: my %dumphash=
2987: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2988: my $now=time;
2989: my %privileged;
2990: foreach my $entry (keys(%dumphash)) {
2991: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2992: if (($tstart) && ($tstart<0)) { next; }
2993: if (($tend) && ($tend<$now)) { next; }
2994: if (($tstart) && ($now<$tstart)) { next; }
2995: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2996: if ($username eq '' || $domain eq '') { next; }
2997: unless (ref($privileged{$domain}) eq 'HASH') {
2998: my %dompersonnel =
2999: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3000: $privileged{$domain} = {};
3001: foreach my $server (keys(%dompersonnel)) {
3002: if (ref($dompersonnel{$server}) eq 'HASH') {
3003: foreach my $user (keys(%{$dompersonnel{$server}})) {
3004: my ($trole,$uname,$udom) = split(/:/,$user);
3005: $privileged{$udom}{$uname} = 1;
3006: }
3007: }
3008: }
3009: }
3010: if ((exists($privileged{$domain}{$username})) &&
3011: (!$nothide{$username.':'.$domain})) { next; }
3012: if ($role eq 'cr') { next; }
3013: if ($codes) {
3014: if ($section) { $role .= ':'.$section; }
3015: if ($returnhash{$role}) {
3016: $returnhash{$role}.=','.$username.':'.$domain;
3017: } else {
3018: $returnhash{$role}=$username.':'.$domain;
3019: }
3020: } else {
3021: my $key=&plaintext($role,$crstype);
3022: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3023: if ($returnhash{$key}) {
3024: $returnhash{$key}.=','.$username.':'.$domain;
3025: } else {
3026: $returnhash{$key}=$username.':'.$domain;
3027: }
3028: }
3029: }
3030: return %returnhash;
3031: }
3032:
3033: sub get_my_roles {
3034: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3035: unless (defined($uname)) { $uname=$env{'user.name'}; }
3036: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3037: my (%dumphash,%nothide);
3038: if ($context eq 'userroles') {
3039: %dumphash = &dump('roles',$udom,$uname);
3040: } else {
3041: %dumphash=
3042: &dump('nohist_userroles',$udom,$uname);
3043: if ($hidepriv) {
3044: my %coursehash=&coursedescription($udom.'_'.$uname);
3045: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3046: if ($user !~ /:/) {
3047: $nothide{join(':',split(/[\@]/,$user))} = 1;
3048: } else {
3049: $nothide{$user} = 1;
3050: }
3051: }
3052: }
3053: }
3054: my %returnhash=();
3055: my $now=time;
3056: my %privileged;
3057: foreach my $entry (keys(%dumphash)) {
3058: my ($role,$tend,$tstart);
3059: if ($context eq 'userroles') {
3060: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3061: } else {
3062: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3063: }
3064: if (($tstart) && ($tstart<0)) { next; }
3065: my $status = 'active';
3066: if (($tend) && ($tend<=$now)) {
3067: $status = 'previous';
3068: }
3069: if (($tstart) && ($now<$tstart)) {
3070: $status = 'future';
3071: }
3072: if (ref($types) eq 'ARRAY') {
3073: if (!grep(/^\Q$status\E$/,@{$types})) {
3074: next;
3075: }
3076: } else {
3077: if ($status ne 'active') {
3078: next;
3079: }
3080: }
3081: my ($rolecode,$username,$domain,$section,$area);
3082: if ($context eq 'userroles') {
3083: ($area,$rolecode) = split(/_/,$entry);
3084: (undef,$domain,$username,$section) = split(/\//,$area);
3085: } else {
3086: ($role,$username,$domain,$section) = split(/\:/,$entry);
3087: }
3088: if (ref($roledoms) eq 'ARRAY') {
3089: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3090: next;
3091: }
3092: }
3093: if (ref($roles) eq 'ARRAY') {
3094: if (!grep(/^\Q$role\E$/,@{$roles})) {
3095: if ($role =~ /^cr\//) {
3096: if (!grep(/^cr$/,@{$roles})) {
3097: next;
3098: }
3099: } else {
3100: next;
3101: }
3102: }
3103: }
3104: if ($hidepriv) {
3105: if ($context eq 'userroles') {
3106: if ((&privileged($username,$domain)) &&
3107: (!$nothide{$username.':'.$domain})) {
3108: next;
3109: }
3110: } else {
3111: unless (ref($privileged{$domain}) eq 'HASH') {
3112: my %dompersonnel =
3113: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3114: $privileged{$domain} = {};
3115: if (keys(%dompersonnel)) {
3116: foreach my $server (keys(%dompersonnel)) {
3117: if (ref($dompersonnel{$server}) eq 'HASH') {
3118: foreach my $user (keys(%{$dompersonnel{$server}})) {
3119: my ($trole,$uname,$udom) = split(/:/,$user);
3120: $privileged{$udom}{$uname} = $trole;
3121: }
3122: }
3123: }
3124: }
3125: }
3126: if (exists($privileged{$domain}{$username})) {
3127: if (!$nothide{$username.':'.$domain}) {
3128: next;
3129: }
3130: }
3131: }
3132: }
3133: if ($withsec) {
3134: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3135: $tstart.':'.$tend;
3136: } else {
3137: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3138: }
3139: }
3140: return %returnhash;
3141: }
3142:
3143: # ----------------------------------------------------- Frontpage Announcements
3144: #
3145: #
3146:
3147: sub postannounce {
3148: my ($server,$text)=@_;
3149: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3150: unless ($text=~/\w/) { $text=''; }
3151: return &reply('setannounce:'.&escape($text),$server);
3152: }
3153:
3154: sub getannounce {
3155:
3156: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3157: my $announcement='';
3158: while (my $line = <$fh>) { $announcement .= $line; }
3159: close($fh);
3160: if ($announcement=~/\w/) {
3161: return
3162: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3163: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3164: } else {
3165: return '';
3166: }
3167: } else {
3168: return '';
3169: }
3170: }
3171:
3172: # ---------------------------------------------------------- Course ID routines
3173: # Deal with domain's nohist_courseid.db files
3174: #
3175:
3176: sub courseidput {
3177: my ($domain,$storehash,$coursehome,$caller) = @_;
3178: return unless (ref($storehash) eq 'HASH');
3179: my $outcome;
3180: if ($caller eq 'timeonly') {
3181: my $cids = '';
3182: foreach my $item (keys(%$storehash)) {
3183: $cids.=&escape($item).'&';
3184: }
3185: $cids=~s/\&$//;
3186: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3187: $coursehome);
3188: } else {
3189: my $items = '';
3190: foreach my $item (keys(%$storehash)) {
3191: $items.= &escape($item).'='.
3192: &freeze_escape($$storehash{$item}).'&';
3193: }
3194: $items=~s/\&$//;
3195: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3196: $coursehome);
3197: }
3198: if ($outcome eq 'unknown_cmd') {
3199: my $what;
3200: foreach my $cid (keys(%$storehash)) {
3201: $what .= &escape($cid).'=';
3202: foreach my $item ('description','inst_code','owner','type') {
3203: $what .= &escape($storehash->{$cid}{$item}).':';
3204: }
3205: $what =~ s/\:$/&/;
3206: }
3207: $what =~ s/\&$//;
3208: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3209: } else {
3210: return $outcome;
3211: }
3212: }
3213:
3214: sub courseiddump {
3215: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3216: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3217: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3218: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3219: my $as_hash = 1;
3220: my %returnhash;
3221: if (!$domfilter) { $domfilter=''; }
3222: my %libserv = &all_library();
3223: foreach my $tryserver (keys(%libserv)) {
3224: if ( ( $hostidflag == 1
3225: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3226: || (!defined($hostidflag)) ) {
3227:
3228: if (($domfilter eq '') ||
3229: (&host_domain($tryserver) eq $domfilter)) {
3230: my $rep =
3231: &reply('courseiddump:'.&host_domain($tryserver).':'.
3232: $sincefilter.':'.&escape($descfilter).':'.
3233: &escape($instcodefilter).':'.&escape($ownerfilter).
3234: ':'.&escape($coursefilter).':'.&escape($typefilter).
3235: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3236: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3237: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3238: &escape($cc_clone).':'.$cloneonly.':'.
3239: &escape($createdbefore).':'.&escape($createdafter).':'.
3240: &escape($creationcontext).':'.$domcloner,
3241: $tryserver);
3242: my @pairs=split(/\&/,$rep);
3243: foreach my $item (@pairs) {
3244: my ($key,$value)=split(/\=/,$item,2);
3245: $key = &unescape($key);
3246: next if ($key =~ /^error: 2 /);
3247: my $result = &thaw_unescape($value);
3248: if (ref($result) eq 'HASH') {
3249: $returnhash{$key}=$result;
3250: } else {
3251: my @responses = split(/:/,$value);
3252: my @items = ('description','inst_code','owner','type');
3253: for (my $i=0; $i<@responses; $i++) {
3254: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3255: }
3256: }
3257: }
3258: }
3259: }
3260: }
3261: return %returnhash;
3262: }
3263:
3264: sub courselastaccess {
3265: my ($cdom,$cnum,$hostidref) = @_;
3266: my %returnhash;
3267: if ($cdom && $cnum) {
3268: my $chome = &homeserver($cnum,$cdom);
3269: if ($chome ne 'no_host') {
3270: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3271: &extract_lastaccess(\%returnhash,$rep);
3272: }
3273: } else {
3274: if (!$cdom) { $cdom=''; }
3275: my %libserv = &all_library();
3276: foreach my $tryserver (keys(%libserv)) {
3277: if (ref($hostidref) eq 'ARRAY') {
3278: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3279: }
3280: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3281: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3282: &extract_lastaccess(\%returnhash,$rep);
3283: }
3284: }
3285: }
3286: return %returnhash;
3287: }
3288:
3289: sub extract_lastaccess {
3290: my ($returnhash,$rep) = @_;
3291: if (ref($returnhash) eq 'HASH') {
3292: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3293: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3294: $rep eq '') {
3295: my @pairs=split(/\&/,$rep);
3296: foreach my $item (@pairs) {
3297: my ($key,$value)=split(/\=/,$item,2);
3298: $key = &unescape($key);
3299: next if ($key =~ /^error: 2 /);
3300: $returnhash->{$key} = &thaw_unescape($value);
3301: }
3302: }
3303: }
3304: return;
3305: }
3306:
3307: # ---------------------------------------------------------- DC e-mail
3308:
3309: sub dcmailput {
3310: my ($domain,$msgid,$message,$server)=@_;
3311: my $status = &Apache::lonnet::critical(
3312: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3313: &escape($message),$server);
3314: return $status;
3315: }
3316:
3317: sub dcmaildump {
3318: my ($dom,$startdate,$enddate,$senders) = @_;
3319: my %returnhash=();
3320:
3321: if (defined(&domain($dom,'primary'))) {
3322: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3323: &escape($enddate).':';
3324: my @esc_senders=map { &escape($_)} @$senders;
3325: $cmd.=&escape(join('&',@esc_senders));
3326: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3327: my ($key,$value) = split(/\=/,$line,2);
3328: if (($key) && ($value)) {
3329: $returnhash{&unescape($key)} = &unescape($value);
3330: }
3331: }
3332: }
3333: return %returnhash;
3334: }
3335: # ---------------------------------------------------------- Domain roles
3336:
3337: sub get_domain_roles {
3338: my ($dom,$roles,$startdate,$enddate)=@_;
3339: if ((!defined($startdate)) || ($startdate eq '')) {
3340: $startdate = '.';
3341: }
3342: if ((!defined($enddate)) || ($enddate eq '')) {
3343: $enddate = '.';
3344: }
3345: my $rolelist;
3346: if (ref($roles) eq 'ARRAY') {
3347: $rolelist = join(':',@{$roles});
3348: }
3349: my %personnel = ();
3350:
3351: my %servers = &get_servers($dom,'library');
3352: foreach my $tryserver (keys(%servers)) {
3353: %{$personnel{$tryserver}}=();
3354: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3355: &escape($startdate).':'.
3356: &escape($enddate).':'.
3357: &escape($rolelist), $tryserver))) {
3358: my ($key,$value) = split(/\=/,$line,2);
3359: if (($key) && ($value)) {
3360: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3361: }
3362: }
3363: }
3364: return %personnel;
3365: }
3366:
3367: # ----------------------------------------------------------- Interval timing
3368:
3369: sub get_first_access {
3370: my ($type,$argsymb)=@_;
3371: my ($symb,$courseid,$udom,$uname)=&whichuser();
3372: if ($argsymb) { $symb=$argsymb; }
3373: my ($map,$id,$res)=&decode_symb($symb);
3374: if ($type eq 'course') {
3375: $res='course';
3376: } elsif ($type eq 'map') {
3377: $res=&symbread($map);
3378: } else {
3379: $res=$symb;
3380: }
3381: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3382: return $times{"$courseid\0$res"};
3383: }
3384:
3385: sub set_first_access {
3386: my ($type)=@_;
3387: my ($symb,$courseid,$udom,$uname)=&whichuser();
3388: my ($map,$id,$res)=&decode_symb($symb);
3389: if ($type eq 'course') {
3390: $res='course';
3391: } elsif ($type eq 'map') {
3392: $res=&symbread($map);
3393: } else {
3394: $res=$symb;
3395: }
3396: my $firstaccess=&get_first_access($type,$symb);
3397: if (!$firstaccess) {
3398: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3399: }
3400: return 'already_set';
3401: }
3402:
3403: # --------------------------------------------- Set Expire Date for Spreadsheet
3404:
3405: sub expirespread {
3406: my ($uname,$udom,$stype,$usymb)=@_;
3407: my $cid=$env{'request.course.id'};
3408: if ($cid) {
3409: my $now=time;
3410: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3411: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3412: $env{'course.'.$cid.'.num'}.
3413: ':nohist_expirationdates:'.
3414: &escape($key).'='.$now,
3415: $env{'course.'.$cid.'.home'})
3416: }
3417: return 'ok';
3418: }
3419:
3420: # ----------------------------------------------------- Devalidate Spreadsheets
3421:
3422: sub devalidate {
3423: my ($symb,$uname,$udom)=@_;
3424: my $cid=$env{'request.course.id'};
3425: if ($cid) {
3426: # delete the stored spreadsheets for
3427: # - the student level sheet of this user in course's homespace
3428: # - the assessment level sheet for this resource
3429: # for this user in user's homespace
3430: # - current conditional state info
3431: my $key=$uname.':'.$udom.':';
3432: my $status=
3433: &del('nohist_calculatedsheets',
3434: [$key.'studentcalc:'],
3435: $env{'course.'.$cid.'.domain'},
3436: $env{'course.'.$cid.'.num'})
3437: .' '.
3438: &del('nohist_calculatedsheets_'.$cid,
3439: [$key.'assesscalc:'.$symb],$udom,$uname);
3440: unless ($status eq 'ok ok') {
3441: &logthis('Could not devalidate spreadsheet '.
3442: $uname.' at '.$udom.' for '.
3443: $symb.': '.$status);
3444: }
3445: &delenv('user.state.'.$cid);
3446: }
3447: }
3448:
3449: sub get_scalar {
3450: my ($string,$end) = @_;
3451: my $value;
3452: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3453: $value = $1;
3454: } elsif ($$string =~ s/^([^&]*?)&//) {
3455: $value = $1;
3456: }
3457: return &unescape($value);
3458: }
3459:
3460: sub array2str {
3461: my (@array) = @_;
3462: my $result=&arrayref2str(\@array);
3463: $result=~s/^__ARRAY_REF__//;
3464: $result=~s/__END_ARRAY_REF__$//;
3465: return $result;
3466: }
3467:
3468: sub arrayref2str {
3469: my ($arrayref) = @_;
3470: my $result='__ARRAY_REF__';
3471: foreach my $elem (@$arrayref) {
3472: if(ref($elem) eq 'ARRAY') {
3473: $result.=&arrayref2str($elem).'&';
3474: } elsif(ref($elem) eq 'HASH') {
3475: $result.=&hashref2str($elem).'&';
3476: } elsif(ref($elem)) {
3477: #print("Got a ref of ".(ref($elem))." skipping.");
3478: } else {
3479: $result.=&escape($elem).'&';
3480: }
3481: }
3482: $result=~s/\&$//;
3483: $result .= '__END_ARRAY_REF__';
3484: return $result;
3485: }
3486:
3487: sub hash2str {
3488: my (%hash) = @_;
3489: my $result=&hashref2str(\%hash);
3490: $result=~s/^__HASH_REF__//;
3491: $result=~s/__END_HASH_REF__$//;
3492: return $result;
3493: }
3494:
3495: sub hashref2str {
3496: my ($hashref)=@_;
3497: my $result='__HASH_REF__';
3498: foreach my $key (sort(keys(%$hashref))) {
3499: if (ref($key) eq 'ARRAY') {
3500: $result.=&arrayref2str($key).'=';
3501: } elsif (ref($key) eq 'HASH') {
3502: $result.=&hashref2str($key).'=';
3503: } elsif (ref($key)) {
3504: $result.='=';
3505: #print("Got a ref of ".(ref($key))." skipping.");
3506: } else {
3507: if ($key) {$result.=&escape($key).'=';} else { last; }
3508: }
3509:
3510: if(ref($hashref->{$key}) eq 'ARRAY') {
3511: $result.=&arrayref2str($hashref->{$key}).'&';
3512: } elsif(ref($hashref->{$key}) eq 'HASH') {
3513: $result.=&hashref2str($hashref->{$key}).'&';
3514: } elsif(ref($hashref->{$key})) {
3515: $result.='&';
3516: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3517: } else {
3518: $result.=&escape($hashref->{$key}).'&';
3519: }
3520: }
3521: $result=~s/\&$//;
3522: $result .= '__END_HASH_REF__';
3523: return $result;
3524: }
3525:
3526: sub str2hash {
3527: my ($string)=@_;
3528: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3529: return %$hash;
3530: }
3531:
3532: sub str2hashref {
3533: my ($string) = @_;
3534:
3535: my %hash;
3536:
3537: if($string !~ /^__HASH_REF__/) {
3538: if (! ($string eq '' || !defined($string))) {
3539: $hash{'error'}='Not hash reference';
3540: }
3541: return (\%hash, $string);
3542: }
3543:
3544: $string =~ s/^__HASH_REF__//;
3545:
3546: while($string !~ /^__END_HASH_REF__/) {
3547: #key
3548: my $key='';
3549: if($string =~ /^__HASH_REF__/) {
3550: ($key, $string)=&str2hashref($string);
3551: if(defined($key->{'error'})) {
3552: $hash{'error'}='Bad data';
3553: return (\%hash, $string);
3554: }
3555: } elsif($string =~ /^__ARRAY_REF__/) {
3556: ($key, $string)=&str2arrayref($string);
3557: if($key->[0] eq 'Array reference error') {
3558: $hash{'error'}='Bad data';
3559: return (\%hash, $string);
3560: }
3561: } else {
3562: $string =~ s/^(.*?)=//;
3563: $key=&unescape($1);
3564: }
3565: $string =~ s/^=//;
3566:
3567: #value
3568: my $value='';
3569: if($string =~ /^__HASH_REF__/) {
3570: ($value, $string)=&str2hashref($string);
3571: if(defined($value->{'error'})) {
3572: $hash{'error'}='Bad data';
3573: return (\%hash, $string);
3574: }
3575: } elsif($string =~ /^__ARRAY_REF__/) {
3576: ($value, $string)=&str2arrayref($string);
3577: if($value->[0] eq 'Array reference error') {
3578: $hash{'error'}='Bad data';
3579: return (\%hash, $string);
3580: }
3581: } else {
3582: $value=&get_scalar(\$string,'__END_HASH_REF__');
3583: }
3584: $string =~ s/^&//;
3585:
3586: $hash{$key}=$value;
3587: }
3588:
3589: $string =~ s/^__END_HASH_REF__//;
3590:
3591: return (\%hash, $string);
3592: }
3593:
3594: sub str2array {
3595: my ($string)=@_;
3596: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3597: return @$array;
3598: }
3599:
3600: sub str2arrayref {
3601: my ($string) = @_;
3602: my @array;
3603:
3604: if($string !~ /^__ARRAY_REF__/) {
3605: if (! ($string eq '' || !defined($string))) {
3606: $array[0]='Array reference error';
3607: }
3608: return (\@array, $string);
3609: }
3610:
3611: $string =~ s/^__ARRAY_REF__//;
3612:
3613: while($string !~ /^__END_ARRAY_REF__/) {
3614: my $value='';
3615: if($string =~ /^__HASH_REF__/) {
3616: ($value, $string)=&str2hashref($string);
3617: if(defined($value->{'error'})) {
3618: $array[0] ='Array reference error';
3619: return (\@array, $string);
3620: }
3621: } elsif($string =~ /^__ARRAY_REF__/) {
3622: ($value, $string)=&str2arrayref($string);
3623: if($value->[0] eq 'Array reference error') {
3624: $array[0] ='Array reference error';
3625: return (\@array, $string);
3626: }
3627: } else {
3628: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3629: }
3630: $string =~ s/^&//;
3631:
3632: push(@array, $value);
3633: }
3634:
3635: $string =~ s/^__END_ARRAY_REF__//;
3636:
3637: return (\@array, $string);
3638: }
3639:
3640: # -------------------------------------------------------------------Temp Store
3641:
3642: sub tmpreset {
3643: my ($symb,$namespace,$domain,$stuname) = @_;
3644: if (!$symb) {
3645: $symb=&symbread();
3646: if (!$symb) { $symb= $env{'request.url'}; }
3647: }
3648: $symb=escape($symb);
3649:
3650: if (!$namespace) { $namespace=$env{'request.state'}; }
3651: $namespace=~s/\//\_/g;
3652: $namespace=~s/\W//g;
3653:
3654: if (!$domain) { $domain=$env{'user.domain'}; }
3655: if (!$stuname) { $stuname=$env{'user.name'}; }
3656: if ($domain eq 'public' && $stuname eq 'public') {
3657: $stuname=$ENV{'REMOTE_ADDR'};
3658: }
3659: my $path=$perlvar{'lonDaemons'}.'/tmp';
3660: my %hash;
3661: if (tie(%hash,'GDBM_File',
3662: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3663: &GDBM_WRCREAT(),0640)) {
3664: foreach my $key (keys(%hash)) {
3665: if ($key=~ /:$symb/) {
3666: delete($hash{$key});
3667: }
3668: }
3669: }
3670: }
3671:
3672: sub tmpstore {
3673: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3674:
3675: if (!$symb) {
3676: $symb=&symbread();
3677: if (!$symb) { $symb= $env{'request.url'}; }
3678: }
3679: $symb=escape($symb);
3680:
3681: if (!$namespace) {
3682: # I don't think we would ever want to store this for a course.
3683: # it seems this will only be used if we don't have a course.
3684: #$namespace=$env{'request.course.id'};
3685: #if (!$namespace) {
3686: $namespace=$env{'request.state'};
3687: #}
3688: }
3689: $namespace=~s/\//\_/g;
3690: $namespace=~s/\W//g;
3691: if (!$domain) { $domain=$env{'user.domain'}; }
3692: if (!$stuname) { $stuname=$env{'user.name'}; }
3693: if ($domain eq 'public' && $stuname eq 'public') {
3694: $stuname=$ENV{'REMOTE_ADDR'};
3695: }
3696: my $now=time;
3697: my %hash;
3698: my $path=$perlvar{'lonDaemons'}.'/tmp';
3699: if (tie(%hash,'GDBM_File',
3700: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3701: &GDBM_WRCREAT(),0640)) {
3702: $hash{"version:$symb"}++;
3703: my $version=$hash{"version:$symb"};
3704: my $allkeys='';
3705: foreach my $key (keys(%$storehash)) {
3706: $allkeys.=$key.':';
3707: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3708: }
3709: $hash{"$version:$symb:timestamp"}=$now;
3710: $allkeys.='timestamp';
3711: $hash{"$version:keys:$symb"}=$allkeys;
3712: if (untie(%hash)) {
3713: return 'ok';
3714: } else {
3715: return "error:$!";
3716: }
3717: } else {
3718: return "error:$!";
3719: }
3720: }
3721:
3722: # -----------------------------------------------------------------Temp Restore
3723:
3724: sub tmprestore {
3725: my ($symb,$namespace,$domain,$stuname) = @_;
3726:
3727: if (!$symb) {
3728: $symb=&symbread();
3729: if (!$symb) { $symb= $env{'request.url'}; }
3730: }
3731: $symb=escape($symb);
3732:
3733: if (!$namespace) { $namespace=$env{'request.state'}; }
3734:
3735: if (!$domain) { $domain=$env{'user.domain'}; }
3736: if (!$stuname) { $stuname=$env{'user.name'}; }
3737: if ($domain eq 'public' && $stuname eq 'public') {
3738: $stuname=$ENV{'REMOTE_ADDR'};
3739: }
3740: my %returnhash;
3741: $namespace=~s/\//\_/g;
3742: $namespace=~s/\W//g;
3743: my %hash;
3744: my $path=$perlvar{'lonDaemons'}.'/tmp';
3745: if (tie(%hash,'GDBM_File',
3746: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3747: &GDBM_READER(),0640)) {
3748: my $version=$hash{"version:$symb"};
3749: $returnhash{'version'}=$version;
3750: my $scope;
3751: for ($scope=1;$scope<=$version;$scope++) {
3752: my $vkeys=$hash{"$scope:keys:$symb"};
3753: my @keys=split(/:/,$vkeys);
3754: my $key;
3755: $returnhash{"$scope:keys"}=$vkeys;
3756: foreach $key (@keys) {
3757: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3758: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3759: }
3760: }
3761: if (!(untie(%hash))) {
3762: return "error:$!";
3763: }
3764: } else {
3765: return "error:$!";
3766: }
3767: return %returnhash;
3768: }
3769:
3770: # ----------------------------------------------------------------------- Store
3771:
3772: sub store {
3773: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3774: my $home='';
3775:
3776: if ($stuname) { $home=&homeserver($stuname,$domain); }
3777:
3778: $symb=&symbclean($symb);
3779: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3780:
3781: if (!$domain) { $domain=$env{'user.domain'}; }
3782: if (!$stuname) { $stuname=$env{'user.name'}; }
3783:
3784: &devalidate($symb,$stuname,$domain);
3785:
3786: $symb=escape($symb);
3787: if (!$namespace) {
3788: unless ($namespace=$env{'request.course.id'}) {
3789: return '';
3790: }
3791: }
3792: if (!$home) { $home=$env{'user.home'}; }
3793:
3794: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3795: $$storehash{'host'}=$perlvar{'lonHostID'};
3796:
3797: my $namevalue='';
3798: foreach my $key (keys(%$storehash)) {
3799: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3800: }
3801: $namevalue=~s/\&$//;
3802: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3803: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3804: }
3805:
3806: # -------------------------------------------------------------- Critical Store
3807:
3808: sub cstore {
3809: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3810: my $home='';
3811:
3812: if ($stuname) { $home=&homeserver($stuname,$domain); }
3813:
3814: $symb=&symbclean($symb);
3815: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3816:
3817: if (!$domain) { $domain=$env{'user.domain'}; }
3818: if (!$stuname) { $stuname=$env{'user.name'}; }
3819:
3820: &devalidate($symb,$stuname,$domain);
3821:
3822: $symb=escape($symb);
3823: if (!$namespace) {
3824: unless ($namespace=$env{'request.course.id'}) {
3825: return '';
3826: }
3827: }
3828: if (!$home) { $home=$env{'user.home'}; }
3829:
3830: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3831: $$storehash{'host'}=$perlvar{'lonHostID'};
3832:
3833: my $namevalue='';
3834: foreach my $key (keys(%$storehash)) {
3835: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3836: }
3837: $namevalue=~s/\&$//;
3838: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3839: return critical
3840: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3841: }
3842:
3843: # --------------------------------------------------------------------- Restore
3844:
3845: sub restore {
3846: my ($symb,$namespace,$domain,$stuname) = @_;
3847: my $home='';
3848:
3849: if ($stuname) { $home=&homeserver($stuname,$domain); }
3850:
3851: if (!$symb) {
3852: unless ($symb=escape(&symbread())) { return ''; }
3853: } else {
3854: $symb=&escape(&symbclean($symb));
3855: }
3856: if (!$namespace) {
3857: unless ($namespace=$env{'request.course.id'}) {
3858: return '';
3859: }
3860: }
3861: if (!$domain) { $domain=$env{'user.domain'}; }
3862: if (!$stuname) { $stuname=$env{'user.name'}; }
3863: if (!$home) { $home=$env{'user.home'}; }
3864: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3865:
3866: my %returnhash=();
3867: foreach my $line (split(/\&/,$answer)) {
3868: my ($name,$value)=split(/\=/,$line);
3869: $returnhash{&unescape($name)}=&thaw_unescape($value);
3870: }
3871: my $version;
3872: for ($version=1;$version<=$returnhash{'version'};$version++) {
3873: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3874: $returnhash{$item}=$returnhash{$version.':'.$item};
3875: }
3876: }
3877: return %returnhash;
3878: }
3879:
3880: # ---------------------------------------------------------- Course Description
3881:
3882: sub coursedescription {
3883: my ($courseid,$args)=@_;
3884: $courseid=~s/^\///;
3885: $courseid=~s/\_/\//g;
3886: my ($cdomain,$cnum)=split(/\//,$courseid);
3887: my $chome=&homeserver($cnum,$cdomain);
3888: my $normalid=$cdomain.'_'.$cnum;
3889: # need to always cache even if we get errors otherwise we keep
3890: # trying and trying and trying to get the course description.
3891: my %envhash=();
3892: my %returnhash=();
3893:
3894: my $expiretime=600;
3895: if ($env{'request.course.id'} eq $normalid) {
3896: $expiretime=120;
3897: }
3898:
3899: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3900: if (!$args->{'freshen_cache'}
3901: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3902: foreach my $key (keys(%env)) {
3903: next if ($key !~ /^\Q$prefix\E(.*)/);
3904: my ($setting) = $1;
3905: $returnhash{$setting} = $env{$key};
3906: }
3907: return %returnhash;
3908: }
3909:
3910: # get the data agin
3911: if (!$args->{'one_time'}) {
3912: $envhash{'course.'.$normalid.'.last_cache'}=time;
3913: }
3914:
3915: if ($chome ne 'no_host') {
3916: %returnhash=&dump('environment',$cdomain,$cnum);
3917: if (!exists($returnhash{'con_lost'})) {
3918: $returnhash{'home'}= $chome;
3919: $returnhash{'domain'} = $cdomain;
3920: $returnhash{'num'} = $cnum;
3921: if (!defined($returnhash{'type'})) {
3922: $returnhash{'type'} = 'Course';
3923: }
3924: while (my ($name,$value) = each %returnhash) {
3925: $envhash{'course.'.$normalid.'.'.$name}=$value;
3926: }
3927: $returnhash{'url'}=&clutter($returnhash{'url'});
3928: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3929: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3930: $envhash{'course.'.$normalid.'.home'}=$chome;
3931: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3932: $envhash{'course.'.$normalid.'.num'}=$cnum;
3933: }
3934: }
3935: if (!$args->{'one_time'}) {
3936: &appenv(\%envhash);
3937: }
3938: return %returnhash;
3939: }
3940:
3941: sub update_released_required {
3942: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
3943: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
3944: $cid = $env{'request.course.id'};
3945: $cdom = $env{'course.'.$cid.'.domain'};
3946: $cnum = $env{'course.'.$cid.'.num'};
3947: $chome = $env{'course.'.$cid.'.home'};
3948: }
3949: if ($needsrelease) {
3950: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
3951: my $needsupdate;
3952: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
3953: $needsupdate = 1;
3954: } else {
3955: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
3956: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
3957: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
3958: $needsupdate = 1;
3959: }
3960: }
3961: if ($needsupdate) {
3962: my %needshash = (
3963: 'internal.releaserequired' => $needsrelease,
3964: );
3965: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
3966: if ($putresult eq 'ok') {
3967: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
3968: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
3969: if (ref($crsinfo{$cid}) eq 'HASH') {
3970: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
3971: &courseidput($cdom,\%crsinfo,$chome,'notime');
3972: }
3973: }
3974: }
3975: }
3976: return;
3977: }
3978:
3979: # -------------------------------------------------See if a user is privileged
3980:
3981: sub privileged {
3982: my ($username,$domain)=@_;
3983: my $rolesdump=&reply("dump:$domain:$username:roles",
3984: &homeserver($username,$domain));
3985: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
3986: ($rolesdump =~ /^error:/)) {
3987: return 0;
3988: }
3989: my $now=time;
3990: if ($rolesdump ne '') {
3991: foreach my $entry (split(/&/,$rolesdump)) {
3992: if ($entry!~/^rolesdef_/) {
3993: my ($area,$role)=split(/=/,$entry);
3994: $area=~s/\_\w\w$//;
3995: my ($trole,$tend,$tstart)=split(/_/,$role);
3996: if (($trole eq 'dc') || ($trole eq 'su')) {
3997: my $active=1;
3998: if ($tend) {
3999: if ($tend<$now) { $active=0; }
4000: }
4001: if ($tstart) {
4002: if ($tstart>$now) { $active=0; }
4003: }
4004: if ($active) { return 1; }
4005: }
4006: }
4007: }
4008: }
4009: return 0;
4010: }
4011:
4012: # -------------------------------------------------------- Get user privileges
4013:
4014: sub rolesinit {
4015: my ($domain,$username,$authhost)=@_;
4016: my $now=time;
4017: my %userroles = ('user.login.time' => $now);
4018: my $extra = &freeze_escape({'clientcheckrole' => 1});
4019: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4020: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4021: ($rolesdump =~ /^error:/)) {
4022: return \%userroles;
4023: }
4024: my %allroles=();
4025: my %allgroups=();
4026: my $group_privs;
4027:
4028: if ($rolesdump ne '') {
4029: foreach my $entry (split(/&/,$rolesdump)) {
4030: if ($entry!~/^rolesdef_/) {
4031: my ($area,$role)=split(/=/,$entry);
4032: $area=~s/\_\w\w$//;
4033: my ($trole,$tend,$tstart,$group_privs);
4034: if ($role=~/^cr/) {
4035: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4036: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4037: ($tend,$tstart)=split('_',$trest);
4038: } else {
4039: $trole=$role;
4040: }
4041: } elsif ($role =~ m|^gr/|) {
4042: ($trole,$tend,$tstart) = split(/_/,$role);
4043: ($trole,$group_privs) = split(/\//,$trole);
4044: $group_privs = &unescape($group_privs);
4045: } else {
4046: ($trole,$tend,$tstart)=split(/_/,$role);
4047: }
4048: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4049: $username);
4050: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4051: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4052: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4053: if (($area ne '') && ($trole ne '')) {
4054: my $spec=$trole.'.'.$area;
4055: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4056: if ($trole =~ /^cr\//) {
4057: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4058: } elsif ($trole eq 'gr') {
4059: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4060: } else {
4061: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4062: }
4063: }
4064: }
4065: }
4066: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4067: $userroles{'user.adv'} = $adv;
4068: $userroles{'user.author'} = $author;
4069: $env{'user.adv'}=$adv;
4070: }
4071: return \%userroles;
4072: }
4073:
4074: sub set_arearole {
4075: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4076: # log the associated role with the area
4077: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4078: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4079: }
4080:
4081: sub custom_roleprivs {
4082: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4083: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4084: my $homsvr=homeserver($rauthor,$rdomain);
4085: if (&hostname($homsvr) ne '') {
4086: my ($rdummy,$roledef)=
4087: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4088: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4089: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4090: if (defined($syspriv)) {
4091: if ($trest =~ /^$match_community$/) {
4092: $syspriv =~ s/bre\&S//;
4093: }
4094: $$allroles{'cm./'}.=':'.$syspriv;
4095: $$allroles{$spec.'./'}.=':'.$syspriv;
4096: }
4097: if ($tdomain ne '') {
4098: if (defined($dompriv)) {
4099: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4100: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4101: }
4102: if (($trest ne '') && (defined($coursepriv))) {
4103: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4104: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4105: }
4106: }
4107: }
4108: }
4109: }
4110:
4111: sub group_roleprivs {
4112: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4113: my $access = 1;
4114: my $now = time;
4115: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4116: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4117: if ($access) {
4118: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4119: $$allgroups{$course}{$group} .=':'.$group_privs;
4120: }
4121: }
4122:
4123: sub standard_roleprivs {
4124: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4125: if (defined($pr{$trole.':s'})) {
4126: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4127: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4128: }
4129: if ($tdomain ne '') {
4130: if (defined($pr{$trole.':d'})) {
4131: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4132: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4133: }
4134: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4135: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4136: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4137: }
4138: }
4139: }
4140:
4141: sub set_userprivs {
4142: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4143: my $author=0;
4144: my $adv=0;
4145: my %grouproles = ();
4146: if (keys(%{$allgroups}) > 0) {
4147: my @groupkeys;
4148: foreach my $role (keys(%{$allroles})) {
4149: push(@groupkeys,$role);
4150: }
4151: if (ref($groups_roles) eq 'HASH') {
4152: foreach my $key (keys(%{$groups_roles})) {
4153: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4154: push(@groupkeys,$key);
4155: }
4156: }
4157: }
4158: if (@groupkeys > 0) {
4159: foreach my $role (@groupkeys) {
4160: my ($trole,$area,$sec,$extendedarea);
4161: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4162: $trole = $1;
4163: $area = $2;
4164: $sec = $3;
4165: $extendedarea = $area.$sec;
4166: if (exists($$allgroups{$area})) {
4167: foreach my $group (keys(%{$$allgroups{$area}})) {
4168: my $spec = $trole.'.'.$extendedarea;
4169: $grouproles{$spec.'.'.$area.'/'.$group} =
4170: $$allgroups{$area}{$group};
4171: }
4172: }
4173: }
4174: }
4175: }
4176: }
4177: foreach my $group (keys(%grouproles)) {
4178: $$allroles{$group} = $grouproles{$group};
4179: }
4180: foreach my $role (keys(%{$allroles})) {
4181: my %thesepriv;
4182: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4183: foreach my $item (split(/:/,$$allroles{$role})) {
4184: if ($item ne '') {
4185: my ($privilege,$restrictions)=split(/&/,$item);
4186: if ($restrictions eq '') {
4187: $thesepriv{$privilege}='F';
4188: } elsif ($thesepriv{$privilege} ne 'F') {
4189: $thesepriv{$privilege}.=$restrictions;
4190: }
4191: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4192: }
4193: }
4194: my $thesestr='';
4195: foreach my $priv (keys(%thesepriv)) {
4196: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4197: }
4198: $userroles->{'user.priv.'.$role} = $thesestr;
4199: }
4200: return ($author,$adv);
4201: }
4202:
4203: sub role_status {
4204: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4205: my @pwhere = ();
4206: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4207: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4208: unless (!defined($$role) || $$role eq '') {
4209: $$where=join('.',@pwhere);
4210: $$trolecode=$$role.'.'.$$where;
4211: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4212: $$tstatus='is';
4213: if ($$tstart && $$tstart>$then) {
4214: $$tstatus='future';
4215: if ($$tstart<$now) {
4216: if ($$tstart && $$tstart>$refresh) {
4217: if (($$where ne '') && ($$role ne '')) {
4218: my (%allroles,%allgroups,$group_privs,
4219: %groups_roles,@rolecodes);
4220: my %userroles = (
4221: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4222: );
4223: @rolecodes = ('cm');
4224: my $spec=$$role.'.'.$$where;
4225: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4226: if ($$role =~ /^cr\//) {
4227: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4228: push(@rolecodes,'cr');
4229: } elsif ($$role eq 'gr') {
4230: push(@rolecodes,$$role);
4231: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4232: $env{'user.name'});
4233: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4234: (undef,my $group_privs) = split(/\//,$trole);
4235: $group_privs = &unescape($group_privs);
4236: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4237: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4238: if (keys(%course_roles) > 0) {
4239: my ($tnum) = ($trest =~ /^($match_courseid)/);
4240: if ($tdomain ne '' && $tnum ne '') {
4241: foreach my $key (keys(%course_roles)) {
4242: if ($key =~ /^\Q$tnum\E:\Q$tdomain\E:([^:]+):?([^:]*)/) {
4243: my $crsrole = $1;
4244: my $crssec = $2;
4245: if ($crsrole =~ /^cr/) {
4246: unless (grep(/^cr$/,@rolecodes)) {
4247: push(@rolecodes,'cr');
4248: }
4249: } else {
4250: unless(grep(/^\Q$crsrole\E$/,@rolecodes)) {
4251: push(@rolecodes,$crsrole);
4252: }
4253: }
4254: my $rolekey = $crsrole.'./'.$tdomain.'/'.$tnum;
4255: if ($crssec ne '') {
4256: $rolekey .= '/'.$crssec;
4257: }
4258: $rolekey .= './';
4259: $groups_roles{$rolekey} = \@rolecodes;
4260: }
4261: }
4262: }
4263: }
4264: } else {
4265: push(@rolecodes,$$role);
4266: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4267: }
4268: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4269: &appenv(\%userroles,\@rolecodes);
4270: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4271: }
4272: }
4273: $$tstatus = 'is';
4274: }
4275: }
4276: if ($$tend) {
4277: if ($$tend<$then) {
4278: $$tstatus='expired';
4279: } elsif ($$tend<$now) {
4280: $$tstatus='will_not';
4281: }
4282: }
4283: }
4284: }
4285: }
4286:
4287: sub check_adhoc_privs {
4288: my ($cdom,$cnum,$then,$refresh,$now,$checkrole) = @_;
4289: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4290: if ($env{$cckey}) {
4291: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4292: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4293: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4294: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4295: }
4296: } else {
4297: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4298: }
4299: }
4300:
4301: sub set_adhoc_privileges {
4302: # role can be cc or ca
4303: my ($dcdom,$pickedcourse,$role) = @_;
4304: my $area = '/'.$dcdom.'/'.$pickedcourse;
4305: my $spec = $role.'.'.$area;
4306: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4307: $env{'user.name'});
4308: my %ccrole = ();
4309: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4310: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4311: &appenv(\%userroles,[$role,'cm']);
4312: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4313: &appenv( {'request.role' => $spec,
4314: 'request.role.domain' => $dcdom,
4315: 'request.course.sec' => ''
4316: }
4317: );
4318: my $tadv=0;
4319: if (&allowed('adv') eq 'F') { $tadv=1; }
4320: &appenv({'request.role.adv' => $tadv});
4321: }
4322:
4323: # --------------------------------------------------------------- get interface
4324:
4325: sub get {
4326: my ($namespace,$storearr,$udomain,$uname)=@_;
4327: my $items='';
4328: foreach my $item (@$storearr) {
4329: $items.=&escape($item).'&';
4330: }
4331: $items=~s/\&$//;
4332: if (!$udomain) { $udomain=$env{'user.domain'}; }
4333: if (!$uname) { $uname=$env{'user.name'}; }
4334: my $uhome=&homeserver($uname,$udomain);
4335:
4336: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4337: my @pairs=split(/\&/,$rep);
4338: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4339: return @pairs;
4340: }
4341: my %returnhash=();
4342: my $i=0;
4343: foreach my $item (@$storearr) {
4344: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4345: $i++;
4346: }
4347: return %returnhash;
4348: }
4349:
4350: # --------------------------------------------------------------- del interface
4351:
4352: sub del {
4353: my ($namespace,$storearr,$udomain,$uname)=@_;
4354: my $items='';
4355: foreach my $item (@$storearr) {
4356: $items.=&escape($item).'&';
4357: }
4358:
4359: $items=~s/\&$//;
4360: if (!$udomain) { $udomain=$env{'user.domain'}; }
4361: if (!$uname) { $uname=$env{'user.name'}; }
4362: my $uhome=&homeserver($uname,$udomain);
4363: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4364: }
4365:
4366: # -------------------------------------------------------------- dump interface
4367:
4368: sub dump {
4369: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4370: if (!$udomain) { $udomain=$env{'user.domain'}; }
4371: if (!$uname) { $uname=$env{'user.name'}; }
4372: my $uhome=&homeserver($uname,$udomain);
4373: if ($regexp) {
4374: $regexp=&escape($regexp);
4375: } else {
4376: $regexp='.';
4377: }
4378: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4379: my @pairs=split(/\&/,$rep);
4380: my %returnhash=();
4381: foreach my $item (@pairs) {
4382: my ($key,$value)=split(/=/,$item,2);
4383: $key = &unescape($key);
4384: next if ($key =~ /^error: 2 /);
4385: $returnhash{$key}=&thaw_unescape($value);
4386: }
4387: return %returnhash;
4388: }
4389:
4390: # --------------------------------------------------------- dumpstore interface
4391:
4392: sub dumpstore {
4393: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4394: if (!$udomain) { $udomain=$env{'user.domain'}; }
4395: if (!$uname) { $uname=$env{'user.name'}; }
4396: my $uhome=&homeserver($uname,$udomain);
4397: if ($regexp) {
4398: $regexp=&escape($regexp);
4399: } else {
4400: $regexp='.';
4401: }
4402: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4403: my @pairs=split(/\&/,$rep);
4404: my %returnhash=();
4405: foreach my $item (@pairs) {
4406: my ($key,$value)=split(/=/,$item,2);
4407: next if ($key =~ /^error: 2 /);
4408: $returnhash{$key}=&thaw_unescape($value);
4409: }
4410: return %returnhash;
4411: }
4412:
4413: # -------------------------------------------------------------- keys interface
4414:
4415: sub getkeys {
4416: my ($namespace,$udomain,$uname)=@_;
4417: if (!$udomain) { $udomain=$env{'user.domain'}; }
4418: if (!$uname) { $uname=$env{'user.name'}; }
4419: my $uhome=&homeserver($uname,$udomain);
4420: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4421: my @keyarray=();
4422: foreach my $key (split(/\&/,$rep)) {
4423: next if ($key =~ /^error: 2 /);
4424: push(@keyarray,&unescape($key));
4425: }
4426: return @keyarray;
4427: }
4428:
4429: # --------------------------------------------------------------- currentdump
4430: sub currentdump {
4431: my ($courseid,$sdom,$sname)=@_;
4432: $courseid = $env{'request.course.id'} if (! defined($courseid));
4433: $sdom = $env{'user.domain'} if (! defined($sdom));
4434: $sname = $env{'user.name'} if (! defined($sname));
4435: my $uhome = &homeserver($sname,$sdom);
4436: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4437: return if ($rep =~ /^(error:|no_such_host)/);
4438: #
4439: my %returnhash=();
4440: #
4441: if ($rep eq "unknown_cmd") {
4442: # an old lond will not know currentdump
4443: # Do a dump and make it look like a currentdump
4444: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4445: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4446: my %hash = @tmp;
4447: @tmp=();
4448: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4449: } else {
4450: my @pairs=split(/\&/,$rep);
4451: foreach my $pair (@pairs) {
4452: my ($key,$value)=split(/=/,$pair,2);
4453: my ($symb,$param) = split(/:/,$key);
4454: $returnhash{&unescape($symb)}->{&unescape($param)} =
4455: &thaw_unescape($value);
4456: }
4457: }
4458: return %returnhash;
4459: }
4460:
4461: sub convert_dump_to_currentdump{
4462: my %hash = %{shift()};
4463: my %returnhash;
4464: # Code ripped from lond, essentially. The only difference
4465: # here is the unescaping done by lonnet::dump(). Conceivably
4466: # we might run in to problems with parameter names =~ /^v\./
4467: while (my ($key,$value) = each(%hash)) {
4468: my ($v,$symb,$param) = split(/:/,$key);
4469: $symb = &unescape($symb);
4470: $param = &unescape($param);
4471: next if ($v eq 'version' || $symb eq 'keys');
4472: next if (exists($returnhash{$symb}) &&
4473: exists($returnhash{$symb}->{$param}) &&
4474: $returnhash{$symb}->{'v.'.$param} > $v);
4475: $returnhash{$symb}->{$param}=$value;
4476: $returnhash{$symb}->{'v.'.$param}=$v;
4477: }
4478: #
4479: # Remove all of the keys in the hashes which keep track of
4480: # the version of the parameter.
4481: while (my ($symb,$param_hash) = each(%returnhash)) {
4482: # use a foreach because we are going to delete from the hash.
4483: foreach my $key (keys(%$param_hash)) {
4484: delete($param_hash->{$key}) if ($key =~ /^v\./);
4485: }
4486: }
4487: return \%returnhash;
4488: }
4489:
4490: # ------------------------------------------------------ critical inc interface
4491:
4492: sub cinc {
4493: return &inc(@_,'critical');
4494: }
4495:
4496: # --------------------------------------------------------------- inc interface
4497:
4498: sub inc {
4499: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4500: if (!$udomain) { $udomain=$env{'user.domain'}; }
4501: if (!$uname) { $uname=$env{'user.name'}; }
4502: my $uhome=&homeserver($uname,$udomain);
4503: my $items='';
4504: if (! ref($store)) {
4505: # got a single value, so use that instead
4506: $items = &escape($store).'=&';
4507: } elsif (ref($store) eq 'SCALAR') {
4508: $items = &escape($$store).'=&';
4509: } elsif (ref($store) eq 'ARRAY') {
4510: $items = join('=&',map {&escape($_);} @{$store});
4511: } elsif (ref($store) eq 'HASH') {
4512: while (my($key,$value) = each(%{$store})) {
4513: $items.= &escape($key).'='.&escape($value).'&';
4514: }
4515: }
4516: $items=~s/\&$//;
4517: if ($critical) {
4518: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4519: } else {
4520: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4521: }
4522: }
4523:
4524: # --------------------------------------------------------------- put interface
4525:
4526: sub put {
4527: my ($namespace,$storehash,$udomain,$uname)=@_;
4528: if (!$udomain) { $udomain=$env{'user.domain'}; }
4529: if (!$uname) { $uname=$env{'user.name'}; }
4530: my $uhome=&homeserver($uname,$udomain);
4531: my $items='';
4532: foreach my $item (keys(%$storehash)) {
4533: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4534: }
4535: $items=~s/\&$//;
4536: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4537: }
4538:
4539: # ------------------------------------------------------------ newput interface
4540:
4541: sub newput {
4542: my ($namespace,$storehash,$udomain,$uname)=@_;
4543: if (!$udomain) { $udomain=$env{'user.domain'}; }
4544: if (!$uname) { $uname=$env{'user.name'}; }
4545: my $uhome=&homeserver($uname,$udomain);
4546: my $items='';
4547: foreach my $key (keys(%$storehash)) {
4548: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4549: }
4550: $items=~s/\&$//;
4551: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4552: }
4553:
4554: # --------------------------------------------------------- putstore interface
4555:
4556: sub putstore {
4557: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4558: if (!$udomain) { $udomain=$env{'user.domain'}; }
4559: if (!$uname) { $uname=$env{'user.name'}; }
4560: my $uhome=&homeserver($uname,$udomain);
4561: my $items='';
4562: foreach my $key (keys(%$storehash)) {
4563: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4564: }
4565: $items=~s/\&$//;
4566: my $esc_symb=&escape($symb);
4567: my $esc_v=&escape($version);
4568: my $reply =
4569: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4570: $uhome);
4571: if ($reply eq 'unknown_cmd') {
4572: # gfall back to way things use to be done
4573: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4574: $uname);
4575: }
4576: return $reply;
4577: }
4578:
4579: sub old_putstore {
4580: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4581: if (!$udomain) { $udomain=$env{'user.domain'}; }
4582: if (!$uname) { $uname=$env{'user.name'}; }
4583: my $uhome=&homeserver($uname,$udomain);
4584: my %newstorehash;
4585: foreach my $item (keys(%$storehash)) {
4586: my $key = $version.':'.&escape($symb).':'.$item;
4587: $newstorehash{$key} = $storehash->{$item};
4588: }
4589: my $items='';
4590: my %allitems = ();
4591: foreach my $item (keys(%newstorehash)) {
4592: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4593: my $key = $1.':keys:'.$2;
4594: $allitems{$key} .= $3.':';
4595: }
4596: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4597: }
4598: foreach my $item (keys(%allitems)) {
4599: $allitems{$item} =~ s/\:$//;
4600: $items.= $item.'='.$allitems{$item}.'&';
4601: }
4602: $items=~s/\&$//;
4603: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4604: }
4605:
4606: # ------------------------------------------------------ critical put interface
4607:
4608: sub cput {
4609: my ($namespace,$storehash,$udomain,$uname)=@_;
4610: if (!$udomain) { $udomain=$env{'user.domain'}; }
4611: if (!$uname) { $uname=$env{'user.name'}; }
4612: my $uhome=&homeserver($uname,$udomain);
4613: my $items='';
4614: foreach my $item (keys(%$storehash)) {
4615: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4616: }
4617: $items=~s/\&$//;
4618: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4619: }
4620:
4621: # -------------------------------------------------------------- eget interface
4622:
4623: sub eget {
4624: my ($namespace,$storearr,$udomain,$uname)=@_;
4625: my $items='';
4626: foreach my $item (@$storearr) {
4627: $items.=&escape($item).'&';
4628: }
4629: $items=~s/\&$//;
4630: if (!$udomain) { $udomain=$env{'user.domain'}; }
4631: if (!$uname) { $uname=$env{'user.name'}; }
4632: my $uhome=&homeserver($uname,$udomain);
4633: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4634: my @pairs=split(/\&/,$rep);
4635: my %returnhash=();
4636: my $i=0;
4637: foreach my $item (@$storearr) {
4638: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4639: $i++;
4640: }
4641: return %returnhash;
4642: }
4643:
4644: # ------------------------------------------------------------ tmpput interface
4645: sub tmpput {
4646: my ($storehash,$server,$context)=@_;
4647: my $items='';
4648: foreach my $item (keys(%$storehash)) {
4649: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4650: }
4651: $items=~s/\&$//;
4652: if (defined($context)) {
4653: $items .= ':'.&escape($context);
4654: }
4655: return &reply("tmpput:$items",$server);
4656: }
4657:
4658: # ------------------------------------------------------------ tmpget interface
4659: sub tmpget {
4660: my ($token,$server)=@_;
4661: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4662: my $rep=&reply("tmpget:$token",$server);
4663: my %returnhash;
4664: foreach my $item (split(/\&/,$rep)) {
4665: my ($key,$value)=split(/=/,$item);
4666: next if ($key =~ /^error: 2 /);
4667: $returnhash{&unescape($key)}=&thaw_unescape($value);
4668: }
4669: return %returnhash;
4670: }
4671:
4672: # ------------------------------------------------------------ tmpget interface
4673: sub tmpdel {
4674: my ($token,$server)=@_;
4675: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4676: return &reply("tmpdel:$token",$server);
4677: }
4678:
4679: # -------------------------------------------------- portfolio access checking
4680:
4681: sub portfolio_access {
4682: my ($requrl) = @_;
4683: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4684: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4685: if ($result) {
4686: my %setters;
4687: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4688: my ($startblock,$endblock) =
4689: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4690: if ($startblock && $endblock) {
4691: return 'B';
4692: }
4693: } else {
4694: my ($startblock,$endblock) =
4695: &Apache::loncommon::blockcheck(\%setters,'port');
4696: if ($startblock && $endblock) {
4697: return 'B';
4698: }
4699: }
4700: }
4701: if ($result eq 'ok') {
4702: return 'F';
4703: } elsif ($result =~ /^[^:]+:guest_/) {
4704: return 'A';
4705: }
4706: return '';
4707: }
4708:
4709: sub get_portfolio_access {
4710: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4711:
4712: if (!ref($access_hash)) {
4713: my $current_perms = &get_portfile_permissions($udom,$unum);
4714: my %access_controls = &get_access_controls($current_perms,$group,
4715: $file_name);
4716: $access_hash = $access_controls{$file_name};
4717: }
4718:
4719: my ($public,$guest,@domains,@users,@courses,@groups);
4720: my $now = time;
4721: if (ref($access_hash) eq 'HASH') {
4722: foreach my $key (keys(%{$access_hash})) {
4723: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4724: if ($start > $now) {
4725: next;
4726: }
4727: if ($end && $end<$now) {
4728: next;
4729: }
4730: if ($scope eq 'public') {
4731: $public = $key;
4732: last;
4733: } elsif ($scope eq 'guest') {
4734: $guest = $key;
4735: } elsif ($scope eq 'domains') {
4736: push(@domains,$key);
4737: } elsif ($scope eq 'users') {
4738: push(@users,$key);
4739: } elsif ($scope eq 'course') {
4740: push(@courses,$key);
4741: } elsif ($scope eq 'group') {
4742: push(@groups,$key);
4743: }
4744: }
4745: if ($public) {
4746: return 'ok';
4747: }
4748: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4749: if ($guest) {
4750: return $guest;
4751: }
4752: } else {
4753: if (@domains > 0) {
4754: foreach my $domkey (@domains) {
4755: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4756: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4757: return 'ok';
4758: }
4759: }
4760: }
4761: }
4762: if (@users > 0) {
4763: foreach my $userkey (@users) {
4764: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4765: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4766: if (ref($item) eq 'HASH') {
4767: if (($item->{'uname'} eq $env{'user.name'}) &&
4768: ($item->{'udom'} eq $env{'user.domain'})) {
4769: return 'ok';
4770: }
4771: }
4772: }
4773: }
4774: }
4775: }
4776: my %roleshash;
4777: my @courses_and_groups = @courses;
4778: push(@courses_and_groups,@groups);
4779: if (@courses_and_groups > 0) {
4780: my (%allgroups,%allroles);
4781: my ($start,$end,$role,$sec,$group);
4782: foreach my $envkey (%env) {
4783: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4784: my $cid = $2.'_'.$3;
4785: if ($1 eq 'gr') {
4786: $group = $4;
4787: $allgroups{$cid}{$group} = $env{$envkey};
4788: } else {
4789: if ($4 eq '') {
4790: $sec = 'none';
4791: } else {
4792: $sec = $4;
4793: }
4794: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4795: }
4796: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4797: my $cid = $2.'_'.$3;
4798: if ($4 eq '') {
4799: $sec = 'none';
4800: } else {
4801: $sec = $4;
4802: }
4803: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4804: }
4805: }
4806: if (keys(%allroles) == 0) {
4807: return;
4808: }
4809: foreach my $key (@courses_and_groups) {
4810: my %content = %{$$access_hash{$key}};
4811: my $cnum = $content{'number'};
4812: my $cdom = $content{'domain'};
4813: my $cid = $cdom.'_'.$cnum;
4814: if (!exists($allroles{$cid})) {
4815: next;
4816: }
4817: foreach my $role_id (keys(%{$content{'roles'}})) {
4818: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4819: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4820: my @status = @{$content{'roles'}{$role_id}{'access'}};
4821: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4822: foreach my $role (keys(%{$allroles{$cid}})) {
4823: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4824: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4825: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4826: if (grep/^all$/,@sections) {
4827: return 'ok';
4828: } else {
4829: if (grep/^$sec$/,@sections) {
4830: return 'ok';
4831: }
4832: }
4833: }
4834: }
4835: if (keys(%{$allgroups{$cid}}) == 0) {
4836: if (grep/^none$/,@groups) {
4837: return 'ok';
4838: }
4839: } else {
4840: if (grep/^all$/,@groups) {
4841: return 'ok';
4842: }
4843: foreach my $group (keys(%{$allgroups{$cid}})) {
4844: if (grep/^$group$/,@groups) {
4845: return 'ok';
4846: }
4847: }
4848: }
4849: }
4850: }
4851: }
4852: }
4853: }
4854: if ($guest) {
4855: return $guest;
4856: }
4857: }
4858: }
4859: return;
4860: }
4861:
4862: sub course_group_datechecker {
4863: my ($dates,$now,$status) = @_;
4864: my ($start,$end) = split(/\./,$dates);
4865: if (!$start && !$end) {
4866: return 'ok';
4867: }
4868: if (grep/^active$/,@{$status}) {
4869: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4870: return 'ok';
4871: }
4872: }
4873: if (grep/^previous$/,@{$status}) {
4874: if ($end > $now ) {
4875: return 'ok';
4876: }
4877: }
4878: if (grep/^future$/,@{$status}) {
4879: if ($start > $now) {
4880: return 'ok';
4881: }
4882: }
4883: return;
4884: }
4885:
4886: sub parse_portfolio_url {
4887: my ($url) = @_;
4888:
4889: my ($type,$udom,$unum,$group,$file_name);
4890:
4891: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4892: $type = 1;
4893: $udom = $1;
4894: $unum = $2;
4895: $file_name = $3;
4896: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4897: $type = 2;
4898: $udom = $1;
4899: $unum = $2;
4900: $group = $3;
4901: $file_name = $3.'/'.$4;
4902: }
4903: if (wantarray) {
4904: return ($type,$udom,$unum,$file_name,$group);
4905: }
4906: return $type;
4907: }
4908:
4909: sub is_portfolio_url {
4910: my ($url) = @_;
4911: return scalar(&parse_portfolio_url($url));
4912: }
4913:
4914: sub is_portfolio_file {
4915: my ($file) = @_;
4916: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4917: return 1;
4918: }
4919: return;
4920: }
4921:
4922: sub usertools_access {
4923: my ($uname,$udom,$tool,$action,$context) = @_;
4924: my ($access,%tools);
4925: if ($context eq '') {
4926: $context = 'tools';
4927: }
4928: if ($context eq 'requestcourses') {
4929: %tools = (
4930: official => 1,
4931: unofficial => 1,
4932: community => 1,
4933: );
4934: } else {
4935: %tools = (
4936: aboutme => 1,
4937: blog => 1,
4938: portfolio => 1,
4939: );
4940: }
4941: return if (!defined($tools{$tool}));
4942:
4943: if ((!defined($udom)) || (!defined($uname))) {
4944: $udom = $env{'user.domain'};
4945: $uname = $env{'user.name'};
4946: }
4947:
4948: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4949: if ($action ne 'reload') {
4950: if ($context eq 'requestcourses') {
4951: return $env{'environment.canrequest.'.$tool};
4952: } else {
4953: return $env{'environment.availabletools.'.$tool};
4954: }
4955: }
4956: }
4957:
4958: my ($toolstatus,$inststatus);
4959:
4960: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4961: ($action ne 'reload')) {
4962: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4963: $inststatus = $env{'environment.inststatus'};
4964: } else {
4965: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
4966: $toolstatus = $userenv{$context.'.'.$tool};
4967: $inststatus = $userenv{'inststatus'};
4968: }
4969:
4970: if ($toolstatus ne '') {
4971: if ($toolstatus) {
4972: $access = 1;
4973: } else {
4974: $access = 0;
4975: }
4976: return $access;
4977: }
4978:
4979: my $is_adv = &is_advanced_user($udom,$uname);
4980: my %domdef = &get_domain_defaults($udom);
4981: if (ref($domdef{$tool}) eq 'HASH') {
4982: if ($is_adv) {
4983: if ($domdef{$tool}{'_LC_adv'} ne '') {
4984: if ($domdef{$tool}{'_LC_adv'}) {
4985: $access = 1;
4986: } else {
4987: $access = 0;
4988: }
4989: return $access;
4990: }
4991: }
4992: if ($inststatus ne '') {
4993: my ($hasaccess,$hasnoaccess);
4994: foreach my $affiliation (split(/:/,$inststatus)) {
4995: if ($domdef{$tool}{$affiliation} ne '') {
4996: if ($domdef{$tool}{$affiliation}) {
4997: $hasaccess = 1;
4998: } else {
4999: $hasnoaccess = 1;
5000: }
5001: }
5002: }
5003: if ($hasaccess || $hasnoaccess) {
5004: if ($hasaccess) {
5005: $access = 1;
5006: } elsif ($hasnoaccess) {
5007: $access = 0;
5008: }
5009: return $access;
5010: }
5011: } else {
5012: if ($domdef{$tool}{'default'} ne '') {
5013: if ($domdef{$tool}{'default'}) {
5014: $access = 1;
5015: } elsif ($domdef{$tool}{'default'} == 0) {
5016: $access = 0;
5017: }
5018: return $access;
5019: }
5020: }
5021: } else {
5022: if ($context eq 'tools') {
5023: $access = 1;
5024: } else {
5025: $access = 0;
5026: }
5027: return $access;
5028: }
5029: }
5030:
5031: sub is_course_owner {
5032: my ($cdom,$cnum,$udom,$uname) = @_;
5033: if (($udom eq '') || ($uname eq '')) {
5034: $udom = $env{'user.domain'};
5035: $uname = $env{'user.name'};
5036: }
5037: unless (($udom eq '') || ($uname eq '')) {
5038: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5039: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5040: return 1;
5041: } else {
5042: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5043: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5044: return 1;
5045: }
5046: }
5047: }
5048: }
5049: return;
5050: }
5051:
5052: sub is_advanced_user {
5053: my ($udom,$uname) = @_;
5054: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5055: my %allroles;
5056: my $is_adv;
5057: foreach my $role (keys(%roleshash)) {
5058: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5059: my $area = '/'.$tdomain.'/'.$trest;
5060: if ($sec ne '') {
5061: $area .= '/'.$sec;
5062: }
5063: if (($area ne '') && ($trole ne '')) {
5064: my $spec=$trole.'.'.$area;
5065: if ($trole =~ /^cr\//) {
5066: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5067: } elsif ($trole ne 'gr') {
5068: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5069: }
5070: }
5071: }
5072: foreach my $role (keys(%allroles)) {
5073: last if ($is_adv);
5074: foreach my $item (split(/:/,$allroles{$role})) {
5075: if ($item ne '') {
5076: my ($privilege,$restrictions)=split(/&/,$item);
5077: if ($privilege eq 'adv') {
5078: $is_adv = 1;
5079: last;
5080: }
5081: }
5082: }
5083: }
5084: return $is_adv;
5085: }
5086:
5087: sub check_can_request {
5088: my ($dom,$can_request,$request_domains) = @_;
5089: my $canreq = 0;
5090: my ($types,$typename) = &Apache::loncommon::course_types();
5091: my @options = ('approval','validate','autolimit');
5092: my $optregex = join('|',@options);
5093: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5094: foreach my $type (@{$types}) {
5095: if (&usertools_access($env{'user.name'},
5096: $env{'user.domain'},
5097: $type,undef,'requestcourses')) {
5098: $canreq ++;
5099: if (ref($request_domains) eq 'HASH') {
5100: push(@{$request_domains->{$type}},$env{'user.domain'});
5101: }
5102: if ($dom eq $env{'user.domain'}) {
5103: $can_request->{$type} = 1;
5104: }
5105: }
5106: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5107: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5108: if (@curr > 0) {
5109: foreach my $item (@curr) {
5110: if (ref($request_domains) eq 'HASH') {
5111: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5112: if ($otherdom ne '') {
5113: if (ref($request_domains->{$type}) eq 'ARRAY') {
5114: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5115: push(@{$request_domains->{$type}},$otherdom);
5116: }
5117: } else {
5118: push(@{$request_domains->{$type}},$otherdom);
5119: }
5120: }
5121: }
5122: }
5123: unless($dom eq $env{'user.domain'}) {
5124: $canreq ++;
5125: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5126: $can_request->{$type} = 1;
5127: }
5128: }
5129: }
5130: }
5131: }
5132: }
5133: return $canreq;
5134: }
5135:
5136: # ---------------------------------------------- Custom access rule evaluation
5137:
5138: sub customaccess {
5139: my ($priv,$uri)=@_;
5140: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5141: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5142: $udom = &LONCAPA::clean_domain($udom);
5143: $ucrs = &LONCAPA::clean_username($ucrs);
5144: my $access=0;
5145: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5146: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5147: if ($type eq 'user') {
5148: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5149: my ($tdom,$tuname)=split(m{/},$scope);
5150: if ($tdom) {
5151: if ($tdom ne $env{'user.domain'}) { next; }
5152: }
5153: if ($tuname) {
5154: if ($tuname ne $env{'user.name'}) { next; }
5155: }
5156: $access=($effect eq 'allow');
5157: last;
5158: }
5159: } else {
5160: if ($role) {
5161: if ($role ne $urole) { next; }
5162: }
5163: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5164: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5165: if ($tdom) {
5166: if ($tdom ne $udom) { next; }
5167: }
5168: if ($tcrs) {
5169: if ($tcrs ne $ucrs) { next; }
5170: }
5171: if ($tsec) {
5172: if ($tsec ne $usec) { next; }
5173: }
5174: $access=($effect eq 'allow');
5175: last;
5176: }
5177: if ($realm eq '' && $role eq '') {
5178: $access=($effect eq 'allow');
5179: }
5180: }
5181: }
5182: return $access;
5183: }
5184:
5185: # ------------------------------------------------- Check for a user privilege
5186:
5187: sub allowed {
5188: my ($priv,$uri,$symb,$role)=@_;
5189: my $ver_orguri=$uri;
5190: $uri=&deversion($uri);
5191: my $orguri=$uri;
5192: $uri=&declutter($uri);
5193:
5194: if ($priv eq 'evb') {
5195: # Evade communication block restrictions for specified role in a course
5196: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5197: return $1;
5198: } else {
5199: return;
5200: }
5201: }
5202:
5203: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5204: # Free bre access to adm and meta resources
5205: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5206: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5207: && ($priv eq 'bre')) {
5208: return 'F';
5209: }
5210:
5211: # Free bre access to user's own portfolio contents
5212: my ($space,$domain,$name,@dir)=split('/',$uri);
5213: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5214: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5215: my %setters;
5216: my ($startblock,$endblock) =
5217: &Apache::loncommon::blockcheck(\%setters,'port');
5218: if ($startblock && $endblock) {
5219: return 'B';
5220: } else {
5221: return 'F';
5222: }
5223: }
5224:
5225: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5226: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5227: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5228: if (exists($env{'request.course.id'})) {
5229: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5230: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5231: if (($domain eq $cdom) && ($name eq $cnum)) {
5232: my $courseprivid=$env{'request.course.id'};
5233: $courseprivid=~s/\_/\//;
5234: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5235: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5236: return $1;
5237: } else {
5238: if ($env{'request.course.sec'}) {
5239: $courseprivid.='/'.$env{'request.course.sec'};
5240: }
5241: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5242: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5243: return $2;
5244: }
5245: }
5246: }
5247: }
5248: }
5249:
5250: # Free bre to public access
5251:
5252: if ($priv eq 'bre') {
5253: my $copyright=&metadata($uri,'copyright');
5254: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5255: return 'F';
5256: }
5257: if ($copyright eq 'priv') {
5258: $uri=~/([^\/]+)\/([^\/]+)\//;
5259: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5260: return '';
5261: }
5262: }
5263: if ($copyright eq 'domain') {
5264: $uri=~/([^\/]+)\/([^\/]+)\//;
5265: unless (($env{'user.domain'} eq $1) ||
5266: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5267: return '';
5268: }
5269: }
5270: if ($env{'request.role'}=~ /li\.\//) {
5271: # Library role, so allow browsing of resources in this domain.
5272: return 'F';
5273: }
5274: if ($copyright eq 'custom') {
5275: unless (&customaccess($priv,$uri)) { return ''; }
5276: }
5277: }
5278: # Domain coordinator is trying to create a course
5279: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5280: # uri is the requested domain in this case.
5281: # comparison to 'request.role.domain' shows if the user has selected
5282: # a role of dc for the domain in question.
5283: return 'F' if ($uri eq $env{'request.role.domain'});
5284: }
5285:
5286: my $thisallowed='';
5287: my $statecond=0;
5288: my $courseprivid='';
5289:
5290: my $ownaccess;
5291: # Community Coordinator or Assistant Co-author browsing resource space.
5292: if (($priv eq 'bro') && ($env{'user.author'})) {
5293: if ($uri eq '') {
5294: $ownaccess = 1;
5295: } else {
5296: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5297: my $udom = $env{'user.domain'};
5298: my $uname = $env{'user.name'};
5299: if ($uri =~ m{^\Q$udom\E/?$}) {
5300: $ownaccess = 1;
5301: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5302: unless ($uri =~ m{\.\./}) {
5303: $ownaccess = 1;
5304: }
5305: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5306: my $now = time;
5307: if ($uri =~ m{^([^/]+)/?$}) {
5308: my $adom = $1;
5309: foreach my $key (keys(%env)) {
5310: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5311: my ($start,$end) = split('.',$env{$key});
5312: if (($now >= $start) && (!$end || $end < $now)) {
5313: $ownaccess = 1;
5314: last;
5315: }
5316: }
5317: }
5318: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5319: my $adom = $1;
5320: my $aname = $2;
5321: foreach my $role ('ca','aa') {
5322: if ($env{"user.role.$role./$adom/$aname"}) {
5323: my ($start,$end) =
5324: split('.',$env{"user.role.$role./$adom/$aname"});
5325: if (($now >= $start) && (!$end || $end < $now)) {
5326: $ownaccess = 1;
5327: last;
5328: }
5329: }
5330: }
5331: }
5332: }
5333: }
5334: }
5335: }
5336:
5337: # Course
5338:
5339: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5340: unless (($priv eq 'bro') && (!$ownaccess)) {
5341: $thisallowed.=$1;
5342: }
5343: }
5344:
5345: # Domain
5346:
5347: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5348: =~/\Q$priv\E\&([^\:]*)/) {
5349: unless (($priv eq 'bro') && (!$ownaccess)) {
5350: $thisallowed.=$1;
5351: }
5352: }
5353:
5354: # Course: uri itself is a course
5355: my $courseuri=$uri;
5356: $courseuri=~s/\_(\d)/\/$1/;
5357: $courseuri=~s/^([^\/])/\/$1/;
5358:
5359: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5360: =~/\Q$priv\E\&([^\:]*)/) {
5361: unless (($priv eq 'bro') && (!$ownaccess)) {
5362: $thisallowed.=$1;
5363: }
5364: }
5365:
5366: # URI is an uploaded document for this course, default permissions don't matter
5367: # not allowing 'edit' access (editupload) to uploaded course docs
5368: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5369: $thisallowed='';
5370: my ($match)=&is_on_map($uri);
5371: if ($match) {
5372: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5373: =~/\Q$priv\E\&([^\:]*)/) {
5374: $thisallowed.=$1;
5375: }
5376: } else {
5377: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5378: if ($refuri) {
5379: if ($refuri =~ m|^/adm/|) {
5380: $thisallowed='F';
5381: } else {
5382: $refuri=&declutter($refuri);
5383: my ($match) = &is_on_map($refuri);
5384: if ($match) {
5385: $thisallowed='F';
5386: }
5387: }
5388: }
5389: }
5390: }
5391:
5392: if ($priv eq 'bre'
5393: && $thisallowed ne 'F'
5394: && $thisallowed ne '2'
5395: && &is_portfolio_url($uri)) {
5396: $thisallowed = &portfolio_access($uri);
5397: }
5398:
5399: # Full access at system, domain or course-wide level? Exit.
5400: if ($thisallowed=~/F/) {
5401: return 'F';
5402: }
5403:
5404: # If this is generating or modifying users, exit with special codes
5405:
5406: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5407: if (($priv eq 'cca') || ($priv eq 'caa')) {
5408: my ($audom,$auname)=split('/',$uri);
5409: # no author name given, so this just checks on the general right to make a co-author in this domain
5410: unless ($auname) { return $thisallowed; }
5411: # an author name is given, so we are about to actually make a co-author for a certain account
5412: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5413: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5414: ($audom ne $env{'request.role.domain'}))) { return ''; }
5415: }
5416: return $thisallowed;
5417: }
5418: #
5419: # Gathered so far: system, domain and course wide privileges
5420: #
5421: # Course: See if uri or referer is an individual resource that is part of
5422: # the course
5423:
5424: if ($env{'request.course.id'}) {
5425:
5426: $courseprivid=$env{'request.course.id'};
5427: if ($env{'request.course.sec'}) {
5428: $courseprivid.='/'.$env{'request.course.sec'};
5429: }
5430: $courseprivid=~s/\_/\//;
5431: my $checkreferer=1;
5432: my ($match,$cond)=&is_on_map($uri);
5433: if ($match) {
5434: $statecond=$cond;
5435: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5436: =~/\Q$priv\E\&([^\:]*)/) {
5437: $thisallowed.=$1;
5438: $checkreferer=0;
5439: }
5440: }
5441:
5442: if ($checkreferer) {
5443: my $refuri=$env{'httpref.'.$orguri};
5444: unless ($refuri) {
5445: foreach my $key (keys(%env)) {
5446: if ($key=~/^httpref\..*\*/) {
5447: my $pattern=$key;
5448: $pattern=~s/^httpref\.\/res\///;
5449: $pattern=~s/\*/\[\^\/\]\+/g;
5450: $pattern=~s/\//\\\//g;
5451: if ($orguri=~/$pattern/) {
5452: $refuri=$env{$key};
5453: }
5454: }
5455: }
5456: }
5457:
5458: if ($refuri) {
5459: $refuri=&declutter($refuri);
5460: my ($match,$cond)=&is_on_map($refuri);
5461: if ($match) {
5462: my $refstatecond=$cond;
5463: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5464: =~/\Q$priv\E\&([^\:]*)/) {
5465: $thisallowed.=$1;
5466: $uri=$refuri;
5467: $statecond=$refstatecond;
5468: }
5469: }
5470: }
5471: }
5472: }
5473:
5474: #
5475: # Gathered now: all privileges that could apply, and condition number
5476: #
5477: #
5478: # Full or no access?
5479: #
5480:
5481: if ($thisallowed=~/F/) {
5482: return 'F';
5483: }
5484:
5485: unless ($thisallowed) {
5486: return '';
5487: }
5488:
5489: # Restrictions exist, deal with them
5490: #
5491: # C:according to course preferences
5492: # R:according to resource settings
5493: # L:unless locked
5494: # X:according to user session state
5495: #
5496:
5497: # Possibly locked functionality, check all courses
5498: # Locks might take effect only after 10 minutes cache expiration for other
5499: # courses, and 2 minutes for current course
5500:
5501: my $envkey;
5502: if ($thisallowed=~/L/) {
5503: foreach $envkey (keys(%env)) {
5504: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5505: my $courseid=$2;
5506: my $roleid=$1.'.'.$2;
5507: $courseid=~s/^\///;
5508: my $expiretime=600;
5509: if ($env{'request.role'} eq $roleid) {
5510: $expiretime=120;
5511: }
5512: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5513: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5514: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5515: &coursedescription($courseid,{'freshen_cache' => 1});
5516: }
5517: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5518: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5519: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5520: &log($env{'user.domain'},$env{'user.name'},
5521: $env{'user.home'},
5522: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5523: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5524: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5525: return '';
5526: }
5527: }
5528: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5529: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5530: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5531: &log($env{'user.domain'},$env{'user.name'},
5532: $env{'user.home'},
5533: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5534: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5535: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5536: return '';
5537: }
5538: }
5539: }
5540: }
5541: }
5542:
5543: #
5544: # Rest of the restrictions depend on selected course
5545: #
5546:
5547: unless ($env{'request.course.id'}) {
5548: if ($thisallowed eq 'A') {
5549: return 'A';
5550: } elsif ($thisallowed eq 'B') {
5551: return 'B';
5552: } else {
5553: return '1';
5554: }
5555: }
5556:
5557: #
5558: # Now user is definitely in a course
5559: #
5560:
5561:
5562: # Course preferences
5563:
5564: if ($thisallowed=~/C/) {
5565: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5566: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5567: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5568: =~/\Q$rolecode\E/) {
5569: if ($priv ne 'pch') {
5570: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5571: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5572: $env{'request.course.id'});
5573: }
5574: return '';
5575: }
5576:
5577: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5578: =~/\Q$unamedom\E/) {
5579: if ($priv ne 'pch') {
5580: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5581: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5582: $env{'request.course.id'});
5583: }
5584: return '';
5585: }
5586: }
5587:
5588: # Resource preferences
5589:
5590: if ($thisallowed=~/R/) {
5591: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5592: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5593: if ($priv ne 'pch') {
5594: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5595: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5596: }
5597: return '';
5598: }
5599: }
5600:
5601: # Restricted by state or randomout?
5602:
5603: if ($thisallowed=~/X/) {
5604: if ($env{'acc.randomout'}) {
5605: if (!$symb) { $symb=&symbread($uri,1); }
5606: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5607: return '';
5608: }
5609: }
5610: if (&condval($statecond)) {
5611: return '2';
5612: } else {
5613: return '';
5614: }
5615: }
5616:
5617: if ($thisallowed eq 'A') {
5618: return 'A';
5619: } elsif ($thisallowed eq 'B') {
5620: return 'B';
5621: }
5622: return 'F';
5623: }
5624:
5625: sub split_uri_for_cond {
5626: my $uri=&deversion(&declutter(shift));
5627: my @uriparts=split(/\//,$uri);
5628: my $filename=pop(@uriparts);
5629: my $pathname=join('/',@uriparts);
5630: return ($pathname,$filename);
5631: }
5632: # --------------------------------------------------- Is a resource on the map?
5633:
5634: sub is_on_map {
5635: my ($pathname,$filename) = &split_uri_for_cond(shift);
5636: #Trying to find the conditional for the file
5637: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5638: /\&\Q$filename\E\:([\d\|]+)\&/);
5639: if ($match) {
5640: return (1,$1);
5641: } else {
5642: return (0,0);
5643: }
5644: }
5645:
5646: # --------------------------------------------------------- Get symb from alias
5647:
5648: sub get_symb_from_alias {
5649: my $symb=shift;
5650: my ($map,$resid,$url)=&decode_symb($symb);
5651: # Already is a symb
5652: if ($url) { return $symb; }
5653: # Must be an alias
5654: my $aliassymb='';
5655: my %bighash;
5656: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5657: &GDBM_READER(),0640)) {
5658: my $rid=$bighash{'mapalias_'.$symb};
5659: if ($rid) {
5660: my ($mapid,$resid)=split(/\./,$rid);
5661: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5662: $resid,$bighash{'src_'.$rid});
5663: }
5664: untie %bighash;
5665: }
5666: return $aliassymb;
5667: }
5668:
5669: # ----------------------------------------------------------------- Define Role
5670:
5671: sub definerole {
5672: if (allowed('mcr','/')) {
5673: my ($rolename,$sysrole,$domrole,$courole)=@_;
5674: foreach my $role (split(':',$sysrole)) {
5675: my ($crole,$cqual)=split(/\&/,$role);
5676: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5677: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5678: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5679: return "refused:s:$crole&$cqual";
5680: }
5681: }
5682: }
5683: foreach my $role (split(':',$domrole)) {
5684: my ($crole,$cqual)=split(/\&/,$role);
5685: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5686: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5687: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5688: return "refused:d:$crole&$cqual";
5689: }
5690: }
5691: }
5692: foreach my $role (split(':',$courole)) {
5693: my ($crole,$cqual)=split(/\&/,$role);
5694: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5695: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5696: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5697: return "refused:c:$crole&$cqual";
5698: }
5699: }
5700: }
5701: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5702: "$env{'user.domain'}:$env{'user.name'}:".
5703: "rolesdef_$rolename=".
5704: escape($sysrole.'_'.$domrole.'_'.$courole);
5705: return reply($command,$env{'user.home'});
5706: } else {
5707: return 'refused';
5708: }
5709: }
5710:
5711: # ---------------- Make a metadata query against the network of library servers
5712:
5713: sub metadata_query {
5714: my ($query,$custom,$customshow,$server_array)=@_;
5715: my %rhash;
5716: my %libserv = &all_library();
5717: my @server_list = (defined($server_array) ? @$server_array
5718: : keys(%libserv) );
5719: for my $server (@server_list) {
5720: unless ($custom or $customshow) {
5721: my $reply=&reply("querysend:".&escape($query),$server);
5722: $rhash{$server}=$reply;
5723: }
5724: else {
5725: my $reply=&reply("querysend:".&escape($query).':'.
5726: &escape($custom).':'.&escape($customshow),
5727: $server);
5728: $rhash{$server}=$reply;
5729: }
5730: }
5731: return \%rhash;
5732: }
5733:
5734: # ----------------------------------------- Send log queries and wait for reply
5735:
5736: sub log_query {
5737: my ($uname,$udom,$query,%filters)=@_;
5738: my $uhome=&homeserver($uname,$udom);
5739: if ($uhome eq 'no_host') { return 'error: no_host'; }
5740: my $uhost=&hostname($uhome);
5741: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5742: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5743: $uhome);
5744: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5745: return get_query_reply($queryid);
5746: }
5747:
5748: # -------------------------- Update MySQL table for portfolio file
5749:
5750: sub update_portfolio_table {
5751: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5752: if ($group ne '') {
5753: $file_name =~s /^\Q$group\E//;
5754: }
5755: my $homeserver = &homeserver($uname,$udom);
5756: my $queryid=
5757: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5758: ':'.&escape($file_name).':'.$action,$homeserver);
5759: my $reply = &get_query_reply($queryid);
5760: return $reply;
5761: }
5762:
5763: # -------------------------- Update MySQL allusers table
5764:
5765: sub update_allusers_table {
5766: my ($uname,$udom,$names) = @_;
5767: my $homeserver = &homeserver($uname,$udom);
5768: my $queryid=
5769: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5770: 'lastname='.&escape($names->{'lastname'}).'%%'.
5771: 'firstname='.&escape($names->{'firstname'}).'%%'.
5772: 'middlename='.&escape($names->{'middlename'}).'%%'.
5773: 'generation='.&escape($names->{'generation'}).'%%'.
5774: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5775: 'id='.&escape($names->{'id'}),$homeserver);
5776: return;
5777: }
5778:
5779: # ------- Request retrieval of institutional classlists for course(s)
5780:
5781: sub fetch_enrollment_query {
5782: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5783: my $homeserver;
5784: my $maxtries = 1;
5785: if ($context eq 'automated') {
5786: $homeserver = $perlvar{'lonHostID'};
5787: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5788: } else {
5789: $homeserver = &homeserver($cnum,$dom);
5790: }
5791: my $host=&hostname($homeserver);
5792: my $cmd = '';
5793: foreach my $affiliate (keys(%{$affiliatesref})) {
5794: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5795: }
5796: $cmd =~ s/%%$//;
5797: $cmd = &escape($cmd);
5798: my $query = 'fetchenrollment';
5799: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5800: unless ($queryid=~/^\Q$host\E\_/) {
5801: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5802: return 'error: '.$queryid;
5803: }
5804: my $reply = &get_query_reply($queryid);
5805: my $tries = 1;
5806: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5807: $reply = &get_query_reply($queryid);
5808: $tries ++;
5809: }
5810: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5811: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5812: } else {
5813: my @responses = split(/:/,$reply);
5814: if ($homeserver eq $perlvar{'lonHostID'}) {
5815: foreach my $line (@responses) {
5816: my ($key,$value) = split(/=/,$line,2);
5817: $$replyref{$key} = $value;
5818: }
5819: } else {
5820: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5821: foreach my $line (@responses) {
5822: my ($key,$value) = split(/=/,$line);
5823: $$replyref{$key} = $value;
5824: if ($value > 0) {
5825: foreach my $item (@{$$affiliatesref{$key}}) {
5826: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5827: my $destname = $pathname.'/'.$filename;
5828: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5829: if ($xml_classlist =~ /^error/) {
5830: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5831: } else {
5832: if ( open(FILE,">$destname") ) {
5833: print FILE &unescape($xml_classlist);
5834: close(FILE);
5835: } else {
5836: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5837: }
5838: }
5839: }
5840: }
5841: }
5842: }
5843: return 'ok';
5844: }
5845: return 'error';
5846: }
5847:
5848: sub get_query_reply {
5849: my $queryid=shift;
5850: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5851: my $reply='';
5852: for (1..100) {
5853: sleep 2;
5854: if (-e $replyfile.'.end') {
5855: if (open(my $fh,$replyfile)) {
5856: $reply = join('',<$fh>);
5857: close($fh);
5858: } else { return 'error: reply_file_error'; }
5859: return &unescape($reply);
5860: }
5861: }
5862: return 'timeout:'.$queryid;
5863: }
5864:
5865: sub courselog_query {
5866: #
5867: # possible filters:
5868: # url: url or symb
5869: # username
5870: # domain
5871: # action: view, submit, grade
5872: # start: timestamp
5873: # end: timestamp
5874: #
5875: my (%filters)=@_;
5876: unless ($env{'request.course.id'}) { return 'no_course'; }
5877: if ($filters{'url'}) {
5878: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5879: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5880: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5881: }
5882: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5883: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5884: return &log_query($cname,$cdom,'courselog',%filters);
5885: }
5886:
5887: sub userlog_query {
5888: #
5889: # possible filters:
5890: # action: log check role
5891: # start: timestamp
5892: # end: timestamp
5893: #
5894: my ($uname,$udom,%filters)=@_;
5895: return &log_query($uname,$udom,'userlog',%filters);
5896: }
5897:
5898: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5899:
5900: sub auto_run {
5901: my ($cnum,$cdom) = @_;
5902: my $response = 0;
5903: my $settings;
5904: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5905: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5906: $settings = $domconfig{'autoenroll'};
5907: if ($settings->{'run'} eq '1') {
5908: $response = 1;
5909: }
5910: } else {
5911: my $homeserver;
5912: if (&is_course($cdom,$cnum)) {
5913: $homeserver = &homeserver($cnum,$cdom);
5914: } else {
5915: $homeserver = &domain($cdom,'primary');
5916: }
5917: if ($homeserver ne 'no_host') {
5918: $response = &reply('autorun:'.$cdom,$homeserver);
5919: }
5920: }
5921: return $response;
5922: }
5923:
5924: sub auto_get_sections {
5925: my ($cnum,$cdom,$inst_coursecode) = @_;
5926: my $homeserver;
5927: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5928: $homeserver = &homeserver($cnum,$cdom);
5929: }
5930: if (!defined($homeserver)) {
5931: if ($cdom =~ /^$match_domain$/) {
5932: $homeserver = &domain($cdom,'primary');
5933: }
5934: }
5935: my @secs;
5936: if (defined($homeserver)) {
5937: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5938: unless ($response eq 'refused') {
5939: @secs = split(/:/,$response);
5940: }
5941: }
5942: return @secs;
5943: }
5944:
5945: sub auto_new_course {
5946: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5947: my $homeserver = &homeserver($cnum,$cdom);
5948: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5949: return $response;
5950: }
5951:
5952: sub auto_validate_courseID {
5953: my ($cnum,$cdom,$inst_course_id) = @_;
5954: my $homeserver = &homeserver($cnum,$cdom);
5955: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5956: return $response;
5957: }
5958:
5959: sub auto_validate_instcode {
5960: my ($cnum,$cdom,$instcode,$owner) = @_;
5961: my ($homeserver,$response);
5962: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5963: $homeserver = &homeserver($cnum,$cdom);
5964: }
5965: if (!defined($homeserver)) {
5966: if ($cdom =~ /^$match_domain$/) {
5967: $homeserver = &domain($cdom,'primary');
5968: }
5969: }
5970: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
5971: &escape($instcode).':'.&escape($owner),$homeserver));
5972: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
5973: return ($outcome,$description);
5974: }
5975:
5976: sub auto_create_password {
5977: my ($cnum,$cdom,$authparam,$udom) = @_;
5978: my ($homeserver,$response);
5979: my $create_passwd = 0;
5980: my $authchk = '';
5981: if ($udom =~ /^$match_domain$/) {
5982: $homeserver = &domain($udom,'primary');
5983: }
5984: if ($homeserver eq '') {
5985: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5986: $homeserver = &homeserver($cnum,$cdom);
5987: }
5988: }
5989: if ($homeserver eq '') {
5990: $authchk = 'nodomain';
5991: } else {
5992: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5993: if ($response eq 'refused') {
5994: $authchk = 'refused';
5995: } else {
5996: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5997: }
5998: }
5999: return ($authparam,$create_passwd,$authchk);
6000: }
6001:
6002: sub auto_photo_permission {
6003: my ($cnum,$cdom,$students) = @_;
6004: my $homeserver = &homeserver($cnum,$cdom);
6005: my ($outcome,$perm_reqd,$conditions) =
6006: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6007: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6008: return (undef,undef);
6009: }
6010: return ($outcome,$perm_reqd,$conditions);
6011: }
6012:
6013: sub auto_checkphotos {
6014: my ($uname,$udom,$pid) = @_;
6015: my $homeserver = &homeserver($uname,$udom);
6016: my ($result,$resulttype);
6017: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6018: &escape($uname).':'.&escape($pid),
6019: $homeserver));
6020: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6021: return (undef,undef);
6022: }
6023: if ($outcome) {
6024: ($result,$resulttype) = split(/:/,$outcome);
6025: }
6026: return ($result,$resulttype);
6027: }
6028:
6029: sub auto_photochoice {
6030: my ($cnum,$cdom) = @_;
6031: my $homeserver = &homeserver($cnum,$cdom);
6032: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6033: &escape($cdom),
6034: $homeserver)));
6035: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6036: return (undef,undef);
6037: }
6038: return ($update,$comment);
6039: }
6040:
6041: sub auto_photoupdate {
6042: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6043: my $homeserver = &homeserver($cnum,$dom);
6044: my $host=&hostname($homeserver);
6045: my $cmd = '';
6046: my $maxtries = 1;
6047: foreach my $affiliate (keys(%{$affiliatesref})) {
6048: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6049: }
6050: $cmd =~ s/%%$//;
6051: $cmd = &escape($cmd);
6052: my $query = 'institutionalphotos';
6053: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6054: unless ($queryid=~/^\Q$host\E\_/) {
6055: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6056: return 'error: '.$queryid;
6057: }
6058: my $reply = &get_query_reply($queryid);
6059: my $tries = 1;
6060: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6061: $reply = &get_query_reply($queryid);
6062: $tries ++;
6063: }
6064: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6065: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6066: } else {
6067: my @responses = split(/:/,$reply);
6068: my $outcome = shift(@responses);
6069: foreach my $item (@responses) {
6070: my ($key,$value) = split(/=/,$item);
6071: $$photo{$key} = $value;
6072: }
6073: return $outcome;
6074: }
6075: return 'error';
6076: }
6077:
6078: sub auto_instcode_format {
6079: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6080: $cat_order) = @_;
6081: my $courses = '';
6082: my @homeservers;
6083: if ($caller eq 'global') {
6084: my %servers = &get_servers($codedom,'library');
6085: foreach my $tryserver (keys(%servers)) {
6086: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6087: push(@homeservers,$tryserver);
6088: }
6089: }
6090: } elsif ($caller eq 'requests') {
6091: if ($codedom =~ /^$match_domain$/) {
6092: my $chome = &domain($codedom,'primary');
6093: unless ($chome eq 'no_host') {
6094: push(@homeservers,$chome);
6095: }
6096: }
6097: } else {
6098: push(@homeservers,&homeserver($caller,$codedom));
6099: }
6100: foreach my $code (keys(%{$instcodes})) {
6101: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6102: }
6103: chop($courses);
6104: my $ok_response = 0;
6105: my $response;
6106: while (@homeservers > 0 && $ok_response == 0) {
6107: my $server = shift(@homeservers);
6108: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6109: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6110: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6111: split(/:/,$response);
6112: %{$codes} = (%{$codes},&str2hash($codes_str));
6113: push(@{$codetitles},&str2array($codetitles_str));
6114: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6115: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6116: $ok_response = 1;
6117: }
6118: }
6119: if ($ok_response) {
6120: return 'ok';
6121: } else {
6122: return $response;
6123: }
6124: }
6125:
6126: sub auto_instcode_defaults {
6127: my ($domain,$returnhash,$code_order) = @_;
6128: my @homeservers;
6129:
6130: my %servers = &get_servers($domain,'library');
6131: foreach my $tryserver (keys(%servers)) {
6132: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6133: push(@homeservers,$tryserver);
6134: }
6135: }
6136:
6137: my $response;
6138: foreach my $server (@homeservers) {
6139: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6140: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6141:
6142: foreach my $pair (split(/\&/,$response)) {
6143: my ($name,$value)=split(/\=/,$pair);
6144: if ($name eq 'code_order') {
6145: @{$code_order} = split(/\&/,&unescape($value));
6146: } else {
6147: $returnhash->{&unescape($name)}=&unescape($value);
6148: }
6149: }
6150: return 'ok';
6151: }
6152:
6153: return $response;
6154: }
6155:
6156: sub auto_possible_instcodes {
6157: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6158: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6159: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6160: return;
6161: }
6162: my (@homeservers,$uhome);
6163: if (defined(&domain($domain,'primary'))) {
6164: $uhome=&domain($domain,'primary');
6165: push(@homeservers,&domain($domain,'primary'));
6166: } else {
6167: my %servers = &get_servers($domain,'library');
6168: foreach my $tryserver (keys(%servers)) {
6169: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6170: push(@homeservers,$tryserver);
6171: }
6172: }
6173: }
6174: my $response;
6175: foreach my $server (@homeservers) {
6176: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6177: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6178: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6179: split(':',$response);
6180: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6181: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6182: foreach my $item (split('&',$cat_title)) {
6183: my ($name,$value)=split('=',$item);
6184: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6185: }
6186: foreach my $item (split('&',$cat_order)) {
6187: my ($name,$value)=split('=',$item);
6188: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6189: }
6190: return 'ok';
6191: }
6192: return $response;
6193: }
6194:
6195: sub auto_courserequest_checks {
6196: my ($dom) = @_;
6197: my ($homeserver,%validations);
6198: if ($dom =~ /^$match_domain$/) {
6199: $homeserver = &domain($dom,'primary');
6200: }
6201: unless ($homeserver eq 'no_host') {
6202: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6203: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6204: my @items = split(/&/,$response);
6205: foreach my $item (@items) {
6206: my ($key,$value) = split('=',$item);
6207: $validations{&unescape($key)} = &thaw_unescape($value);
6208: }
6209: }
6210: }
6211: return %validations;
6212: }
6213:
6214: sub auto_courserequest_validation {
6215: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6216: my ($homeserver,$response);
6217: if ($dom =~ /^$match_domain$/) {
6218: $homeserver = &domain($dom,'primary');
6219: }
6220: unless ($homeserver eq 'no_host') {
6221:
6222: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6223: ':'.&escape($crstype).':'.&escape($inststatuslist).
6224: ':'.&escape($instcode).':'.&escape($instseclist),
6225: $homeserver));
6226: }
6227: return $response;
6228: }
6229:
6230: sub auto_validate_class_sec {
6231: my ($cdom,$cnum,$owners,$inst_class) = @_;
6232: my $homeserver = &homeserver($cnum,$cdom);
6233: my $ownerlist;
6234: if (ref($owners) eq 'ARRAY') {
6235: $ownerlist = join(',',@{$owners});
6236: } else {
6237: $ownerlist = $owners;
6238: }
6239: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6240: &escape($ownerlist).':'.$cdom,$homeserver);
6241: return $response;
6242: }
6243:
6244: # ------------------------------------------------------- Course Group routines
6245:
6246: sub get_coursegroups {
6247: my ($cdom,$cnum,$group,$namespace) = @_;
6248: return(&dump($namespace,$cdom,$cnum,$group));
6249: }
6250:
6251: sub modify_coursegroup {
6252: my ($cdom,$cnum,$groupsettings) = @_;
6253: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6254: }
6255:
6256: sub toggle_coursegroup_status {
6257: my ($cdom,$cnum,$group,$action) = @_;
6258: my ($from_namespace,$to_namespace);
6259: if ($action eq 'delete') {
6260: $from_namespace = 'coursegroups';
6261: $to_namespace = 'deleted_groups';
6262: } else {
6263: $from_namespace = 'deleted_groups';
6264: $to_namespace = 'coursegroups';
6265: }
6266: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6267: if (my $tmp = &error(%curr_group)) {
6268: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6269: return ('read error',$tmp);
6270: } else {
6271: my %savedsettings = %curr_group;
6272: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6273: my $deloutcome;
6274: if ($result eq 'ok') {
6275: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6276: } else {
6277: return ('write error',$result);
6278: }
6279: if ($deloutcome eq 'ok') {
6280: return 'ok';
6281: } else {
6282: return ('delete error',$deloutcome);
6283: }
6284: }
6285: }
6286:
6287: sub modify_group_roles {
6288: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6289: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6290: my $role = 'gr/'.&escape($userprivs);
6291: my ($uname,$udom) = split(/:/,$user);
6292: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6293: if ($result eq 'ok') {
6294: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6295: }
6296: return $result;
6297: }
6298:
6299: sub modify_coursegroup_membership {
6300: my ($cdom,$cnum,$membership) = @_;
6301: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6302: return $result;
6303: }
6304:
6305: sub get_active_groups {
6306: my ($udom,$uname,$cdom,$cnum) = @_;
6307: my $now = time;
6308: my %groups = ();
6309: foreach my $key (keys(%env)) {
6310: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6311: my ($start,$end) = split(/\./,$env{$key});
6312: if (($end!=0) && ($end<$now)) { next; }
6313: if (($start!=0) && ($start>$now)) { next; }
6314: if ($1 eq $cdom && $2 eq $cnum) {
6315: $groups{$3} = $env{$key} ;
6316: }
6317: }
6318: }
6319: return %groups;
6320: }
6321:
6322: sub get_group_membership {
6323: my ($cdom,$cnum,$group) = @_;
6324: return(&dump('groupmembership',$cdom,$cnum,$group));
6325: }
6326:
6327: sub get_users_groups {
6328: my ($udom,$uname,$courseid) = @_;
6329: my @usersgroups;
6330: my $cachetime=1800;
6331:
6332: my $hashid="$udom:$uname:$courseid";
6333: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6334: if (defined($cached)) {
6335: @usersgroups = split(/:/,$grouplist);
6336: } else {
6337: $grouplist = '';
6338: my $courseurl = &courseid_to_courseurl($courseid);
6339: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
6340: my $access_end = $env{'course.'.$courseid.
6341: '.default_enrollment_end_date'};
6342: my $now = time;
6343: foreach my $key (keys(%roleshash)) {
6344: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6345: my $group = $1;
6346: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6347: my $start = $2;
6348: my $end = $1;
6349: if ($start == -1) { next; } # deleted from group
6350: if (($start!=0) && ($start>$now)) { next; }
6351: if (($end!=0) && ($end<$now)) {
6352: if ($access_end && $access_end < $now) {
6353: if ($access_end - $end < 86400) {
6354: push(@usersgroups,$group);
6355: }
6356: }
6357: next;
6358: }
6359: push(@usersgroups,$group);
6360: }
6361: }
6362: }
6363: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6364: $grouplist = join(':',@usersgroups);
6365: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6366: }
6367: return @usersgroups;
6368: }
6369:
6370: sub devalidate_getgroups_cache {
6371: my ($udom,$uname,$cdom,$cnum)=@_;
6372: my $courseid = $cdom.'_'.$cnum;
6373:
6374: my $hashid="$udom:$uname:$courseid";
6375: &devalidate_cache_new('getgroups',$hashid);
6376: }
6377:
6378: # ------------------------------------------------------------------ Plain Text
6379:
6380: sub plaintext {
6381: my ($short,$type,$cid,$forcedefault) = @_;
6382: if ($short =~ m{^cr/}) {
6383: return (split('/',$short))[-1];
6384: }
6385: if (!defined($cid)) {
6386: $cid = $env{'request.course.id'};
6387: }
6388: my %rolenames = (
6389: Course => 'std',
6390: Community => 'alt1',
6391: );
6392: if ($cid ne '') {
6393: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6394: unless ($forcedefault) {
6395: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6396: &Apache::lonlocal::mt_escape(\$roletext);
6397: return &Apache::lonlocal::mt($roletext);
6398: }
6399: }
6400: }
6401: if ((defined($type)) && (defined($rolenames{$type})) &&
6402: (defined($rolenames{$type})) &&
6403: (defined($prp{$short}{$rolenames{$type}}))) {
6404: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6405: } elsif ($cid ne '') {
6406: my $crstype = $env{'course.'.$cid.'.type'};
6407: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6408: (defined($prp{$short}{$rolenames{$crstype}}))) {
6409: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6410: }
6411: }
6412: return &Apache::lonlocal::mt($prp{$short}{'std'});
6413: }
6414:
6415: # ----------------------------------------------------------------- Assign Role
6416:
6417: sub assignrole {
6418: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6419: $context)=@_;
6420: my $mrole;
6421: if ($role =~ /^cr\//) {
6422: my $cwosec=$url;
6423: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6424: unless (&allowed('ccr',$cwosec)) {
6425: my $refused = 1;
6426: if ($context eq 'requestcourses') {
6427: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6428: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6429: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6430: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6431: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6432: if ($crsenv{'internal.courseowner'} eq
6433: $env{'user.name'}.':'.$env{'user.domain'}) {
6434: $refused = '';
6435: }
6436: }
6437: }
6438: }
6439: }
6440: if ($refused) {
6441: &logthis('Refused custom assignrole: '.
6442: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6443: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6444: return 'refused';
6445: }
6446: }
6447: $mrole='cr';
6448: } elsif ($role =~ /^gr\//) {
6449: my $cwogrp=$url;
6450: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6451: unless (&allowed('mdg',$cwogrp)) {
6452: &logthis('Refused group assignrole: '.
6453: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6454: $env{'user.name'}.' at '.$env{'user.domain'});
6455: return 'refused';
6456: }
6457: $mrole='gr';
6458: } else {
6459: my $cwosec=$url;
6460: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6461: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6462: my $refused;
6463: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6464: if (!(&allowed('c'.$role,$url))) {
6465: $refused = 1;
6466: }
6467: } else {
6468: $refused = 1;
6469: }
6470: if ($refused) {
6471: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6472: if (!$selfenroll && $context eq 'course') {
6473: my %crsenv;
6474: if ($role eq 'cc' || $role eq 'co') {
6475: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6476: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6477: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6478: if ($crsenv{'internal.courseowner'} eq
6479: $env{'user.name'}.':'.$env{'user.domain'}) {
6480: $refused = '';
6481: }
6482: }
6483: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6484: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6485: if ($crsenv{'internal.courseowner'} eq
6486: $env{'user.name'}.':'.$env{'user.domain'}) {
6487: $refused = '';
6488: }
6489: }
6490: }
6491: }
6492: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6493: $refused = '';
6494: } elsif ($context eq 'requestcourses') {
6495: my @possroles = ('st','ta','ep','in','cc','co');
6496: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6497: my $wrongcc;
6498: if ($cnum =~ /^$match_community$/) {
6499: $wrongcc = 1 if ($role eq 'cc');
6500: } else {
6501: $wrongcc = 1 if ($role eq 'co');
6502: }
6503: unless ($wrongcc) {
6504: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6505: if ($crsenv{'internal.courseowner'} eq
6506: $env{'user.name'}.':'.$env{'user.domain'}) {
6507: $refused = '';
6508: }
6509: }
6510: }
6511: }
6512: if ($refused) {
6513: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6514: ' '.$role.' '.$end.' '.$start.' by '.
6515: $env{'user.name'}.' at '.$env{'user.domain'});
6516: return 'refused';
6517: }
6518: }
6519: }
6520: $mrole=$role;
6521: }
6522: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6523: "$udom:$uname:$url".'_'."$mrole=$role";
6524: if ($end) { $command.='_'.$end; }
6525: if ($start) {
6526: if ($end) {
6527: $command.='_'.$start;
6528: } else {
6529: $command.='_0_'.$start;
6530: }
6531: }
6532: my $origstart = $start;
6533: my $origend = $end;
6534: my $delflag;
6535: # actually delete
6536: if ($deleteflag) {
6537: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6538: # modify command to delete the role
6539: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6540: "$udom:$uname:$url".'_'."$mrole";
6541: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6542: # set start and finish to negative values for userrolelog
6543: $start=-1;
6544: $end=-1;
6545: $delflag = 1;
6546: }
6547: }
6548: # send command
6549: my $answer=&reply($command,&homeserver($uname,$udom));
6550: # log new user role if status is ok
6551: if ($answer eq 'ok') {
6552: &userrolelog($role,$uname,$udom,$url,$start,$end);
6553: # for course roles, perform group memberships changes triggered by role change.
6554: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6555: unless ($role =~ /^gr/) {
6556: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6557: $origstart,$selfenroll,$context);
6558: }
6559: if ($role eq 'cc') {
6560: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6561: }
6562: }
6563: return $answer;
6564: }
6565:
6566: sub autoupdate_coowners {
6567: my ($url,$end,$start,$uname,$udom) = @_;
6568: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6569: if (($cdom ne '') && ($cnum ne '')) {
6570: my $now = time;
6571: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6572: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6573: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6574: my $instcode = $coursehash{'internal.coursecode'};
6575: if ($instcode ne '') {
6576: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6577: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6578: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6579: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6580: if ($result eq 'valid') {
6581: if ($coursehash{'internal.co-owners'}) {
6582: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6583: push(@newcoowners,$coowner);
6584: }
6585: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6586: push(@newcoowners,$uname.':'.$udom);
6587: }
6588: @newcoowners = sort(@newcoowners);
6589: } else {
6590: push(@newcoowners,$uname.':'.$udom);
6591: }
6592: } else {
6593: if ($coursehash{'internal.co-owners'}) {
6594: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6595: unless ($coowner eq $uname.':'.$udom) {
6596: push(@newcoowners,$coowner);
6597: }
6598: }
6599: unless (@newcoowners > 0) {
6600: $delcoowners = 1;
6601: $coowners = '';
6602: }
6603: }
6604: }
6605: if (@newcoowners || $delcoowners) {
6606: &store_coowners($cdom,$cnum,$coursehash{'home'},
6607: $delcoowners,@newcoowners);
6608: }
6609: }
6610: }
6611: }
6612: }
6613: }
6614: }
6615:
6616: sub store_coowners {
6617: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6618: my $cid = $cdom.'_'.$cnum;
6619: my ($coowners,$delresult,$putresult);
6620: if (@newcoowners) {
6621: $coowners = join(',',@newcoowners);
6622: my %coownershash = (
6623: 'internal.co-owners' => $coowners,
6624: );
6625: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6626: if ($putresult eq 'ok') {
6627: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6628: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6629: }
6630: }
6631: }
6632: if ($delcoowners) {
6633: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6634: if ($delresult eq 'ok') {
6635: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6636: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6637: }
6638: }
6639: }
6640: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6641: my %crsinfo =
6642: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6643: if (ref($crsinfo{$cid}) eq 'HASH') {
6644: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6645: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6646: }
6647: }
6648: }
6649:
6650: # -------------------------------------------------- Modify user authentication
6651: # Overrides without validation
6652:
6653: sub modifyuserauth {
6654: my ($udom,$uname,$umode,$upass)=@_;
6655: my $uhome=&homeserver($uname,$udom);
6656: unless (&allowed('mau',$udom)) { return 'refused'; }
6657: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6658: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6659: ' in domain '.$env{'request.role.domain'});
6660: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6661: &escape($upass),$uhome);
6662: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6663: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6664: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6665: &log($udom,,$uname,$uhome,
6666: 'Authentication changed by '.$env{'user.domain'}.', '.
6667: $env{'user.name'}.', '.$umode.
6668: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6669: unless ($reply eq 'ok') {
6670: &logthis('Authentication mode error: '.$reply);
6671: return 'error: '.$reply;
6672: }
6673: return 'ok';
6674: }
6675:
6676: # --------------------------------------------------------------- Modify a user
6677:
6678: sub modifyuser {
6679: my ($udom, $uname, $uid,
6680: $umode, $upass, $first,
6681: $middle, $last, $gene,
6682: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6683: $udom= &LONCAPA::clean_domain($udom);
6684: $uname=&LONCAPA::clean_username($uname);
6685: my $showcandelete = 'none';
6686: if (ref($candelete) eq 'ARRAY') {
6687: if (@{$candelete} > 0) {
6688: $showcandelete = join(', ',@{$candelete});
6689: }
6690: }
6691: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6692: $umode.', '.$first.', '.$middle.', '.
6693: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6694: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6695: ' desiredhome not specified').
6696: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6697: ' in domain '.$env{'request.role.domain'});
6698: my $uhome=&homeserver($uname,$udom,'true');
6699: my $newuser;
6700: if ($uhome eq 'no_host') {
6701: $newuser = 1;
6702: }
6703: # ----------------------------------------------------------------- Create User
6704: if (($uhome eq 'no_host') &&
6705: (($umode && $upass) || ($umode eq 'localauth'))) {
6706: my $unhome='';
6707: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6708: $unhome = $desiredhome;
6709: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6710: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6711: } else { # load balancing routine for determining $unhome
6712: my $loadm=10000000;
6713: my %servers = &get_servers($udom,'library');
6714: foreach my $tryserver (keys(%servers)) {
6715: my $answer=reply('load',$tryserver);
6716: if (($answer=~/\d+/) && ($answer<$loadm)) {
6717: $loadm=$answer;
6718: $unhome=$tryserver;
6719: }
6720: }
6721: }
6722: if (($unhome eq '') || ($unhome eq 'no_host')) {
6723: return 'error: unable to find a home server for '.$uname.
6724: ' in domain '.$udom;
6725: }
6726: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6727: &escape($upass),$unhome);
6728: unless ($reply eq 'ok') {
6729: return 'error: '.$reply;
6730: }
6731: $uhome=&homeserver($uname,$udom,'true');
6732: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6733: return 'error: unable verify users home machine.';
6734: }
6735: } # End of creation of new user
6736: # ---------------------------------------------------------------------- Add ID
6737: if ($uid) {
6738: $uid=~tr/A-Z/a-z/;
6739: my %uidhash=&idrget($udom,$uname);
6740: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6741: && (!$forceid)) {
6742: unless ($uid eq $uidhash{$uname}) {
6743: return 'error: user id "'.$uid.'" does not match '.
6744: 'current user id "'.$uidhash{$uname}.'".';
6745: }
6746: } else {
6747: &idput($udom,($uname => $uid));
6748: }
6749: }
6750: # -------------------------------------------------------------- Add names, etc
6751: my @tmp=&get('environment',
6752: ['firstname','middlename','lastname','generation','id',
6753: 'permanentemail','inststatus'],
6754: $udom,$uname);
6755: my (%names,%oldnames);
6756: if ($tmp[0] =~ m/^error:.*/) {
6757: %names=();
6758: } else {
6759: %names = @tmp;
6760: %oldnames = %names;
6761: }
6762: #
6763: # If name, email and/or uid are blank (e.g., because an uploaded file
6764: # of users did not contain them), do not overwrite existing values
6765: # unless field is in $candelete array ref.
6766: #
6767:
6768: my @fields = ('firstname','middlename','lastname','generation',
6769: 'permanentemail','id');
6770: my %newvalues;
6771: if (ref($candelete) eq 'ARRAY') {
6772: foreach my $field (@fields) {
6773: if (grep(/^\Q$field\E$/,@{$candelete})) {
6774: if ($field eq 'firstname') {
6775: $names{$field} = $first;
6776: } elsif ($field eq 'middlename') {
6777: $names{$field} = $middle;
6778: } elsif ($field eq 'lastname') {
6779: $names{$field} = $last;
6780: } elsif ($field eq 'generation') {
6781: $names{$field} = $gene;
6782: } elsif ($field eq 'permanentemail') {
6783: $names{$field} = $email;
6784: } elsif ($field eq 'id') {
6785: $names{$field} = $uid;
6786: }
6787: }
6788: }
6789: }
6790: if ($first) { $names{'firstname'} = $first; }
6791: if (defined($middle)) { $names{'middlename'} = $middle; }
6792: if ($last) { $names{'lastname'} = $last; }
6793: if (defined($gene)) { $names{'generation'} = $gene; }
6794: if ($email) {
6795: $email=~s/[^\w\@\.\-\,]//gs;
6796: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6797: }
6798: if ($uid) { $names{'id'} = $uid; }
6799: if (defined($inststatus)) {
6800: $names{'inststatus'} = '';
6801: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6802: if (ref($usertypes) eq 'HASH') {
6803: my @okstatuses;
6804: foreach my $item (split(/:/,$inststatus)) {
6805: if (defined($usertypes->{$item})) {
6806: push(@okstatuses,$item);
6807: }
6808: }
6809: if (@okstatuses) {
6810: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6811: }
6812: }
6813: }
6814: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
6815: $umode.', '.$first.', '.$middle.', '.
6816: $last.', '.$gene.', '.$email.', '.$inststatus;
6817: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6818: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6819: } else {
6820: $logmsg .= ' during self creation';
6821: }
6822: my $changed;
6823: if ($newuser) {
6824: $changed = 1;
6825: } else {
6826: foreach my $field (@fields) {
6827: if ($names{$field} ne $oldnames{$field}) {
6828: $changed = 1;
6829: last;
6830: }
6831: }
6832: }
6833: unless ($changed) {
6834: $logmsg = 'No changes in user information needed for: '.$logmsg;
6835: &logthis($logmsg);
6836: return 'ok';
6837: }
6838: my $reply = &put('environment', \%names, $udom,$uname);
6839: if ($reply ne 'ok') {
6840: return 'error: '.$reply;
6841: }
6842: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6843: &devalidate_cache_new('namescache',$uname.':'.$udom);
6844: $logmsg = 'Success modifying user '.$logmsg;
6845: &logthis($logmsg);
6846: return 'ok';
6847: }
6848:
6849: # -------------------------------------------------------------- Modify student
6850:
6851: sub modifystudent {
6852: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6853: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6854: $selfenroll,$context,$inststatus)=@_;
6855: if (!$cid) {
6856: unless ($cid=$env{'request.course.id'}) {
6857: return 'not_in_class';
6858: }
6859: }
6860: # --------------------------------------------------------------- Make the user
6861: my $reply=&modifyuser
6862: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6863: $desiredhome,$email,$inststatus);
6864: unless ($reply eq 'ok') { return $reply; }
6865: # This will cause &modify_student_enrollment to get the uid from the
6866: # students environment
6867: $uid = undef if (!$forceid);
6868: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6869: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6870: return $reply;
6871: }
6872:
6873: sub modify_student_enrollment {
6874: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6875: my ($cdom,$cnum,$chome);
6876: if (!$cid) {
6877: unless ($cid=$env{'request.course.id'}) {
6878: return 'not_in_class';
6879: }
6880: $cdom=$env{'course.'.$cid.'.domain'};
6881: $cnum=$env{'course.'.$cid.'.num'};
6882: } else {
6883: ($cdom,$cnum)=split(/_/,$cid);
6884: }
6885: $chome=$env{'course.'.$cid.'.home'};
6886: if (!$chome) {
6887: $chome=&homeserver($cnum,$cdom);
6888: }
6889: if (!$chome) { return 'unknown_course'; }
6890: # Make sure the user exists
6891: my $uhome=&homeserver($uname,$udom);
6892: if (($uhome eq '') || ($uhome eq 'no_host')) {
6893: return 'error: no such user';
6894: }
6895: # Get student data if we were not given enough information
6896: if (!defined($first) || $first eq '' ||
6897: !defined($last) || $last eq '' ||
6898: !defined($uid) || $uid eq '' ||
6899: !defined($middle) || $middle eq '' ||
6900: !defined($gene) || $gene eq '') {
6901: # They did not supply us with enough data to enroll the student, so
6902: # we need to pick up more information.
6903: my %tmp = &get('environment',
6904: ['firstname','middlename','lastname', 'generation','id']
6905: ,$udom,$uname);
6906:
6907: #foreach my $key (keys(%tmp)) {
6908: # &logthis("key $key = ".$tmp{$key});
6909: #}
6910: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6911: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6912: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6913: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6914: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6915: }
6916: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6917: my $reply=cput('classlist',
6918: {"$uname:$udom" =>
6919: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6920: $cdom,$cnum);
6921: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6922: return 'error: '.$reply;
6923: } else {
6924: &devalidate_getsection_cache($udom,$uname,$cid);
6925: }
6926: # Add student role to user
6927: my $uurl='/'.$cid;
6928: $uurl=~s/\_/\//g;
6929: if ($usec) {
6930: $uurl.='/'.$usec;
6931: }
6932: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6933: }
6934:
6935: sub format_name {
6936: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6937: my $name;
6938: if ($first ne 'lastname') {
6939: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6940: } else {
6941: if ($lastname=~/\S/) {
6942: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6943: $name=~s/\s+,/,/;
6944: } else {
6945: $name.= $firstname.' '.$middlename.' '.$generation;
6946: }
6947: }
6948: $name=~s/^\s+//;
6949: $name=~s/\s+$//;
6950: $name=~s/\s+/ /g;
6951: return $name;
6952: }
6953:
6954: # ------------------------------------------------- Write to course preferences
6955:
6956: sub writecoursepref {
6957: my ($courseid,%prefs)=@_;
6958: $courseid=~s/^\///;
6959: $courseid=~s/\_/\//g;
6960: my ($cdomain,$cnum)=split(/\//,$courseid);
6961: my $chome=homeserver($cnum,$cdomain);
6962: if (($chome eq '') || ($chome eq 'no_host')) {
6963: return 'error: no such course';
6964: }
6965: my $cstring='';
6966: foreach my $pref (keys(%prefs)) {
6967: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6968: }
6969: $cstring=~s/\&$//;
6970: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6971: }
6972:
6973: # ---------------------------------------------------------- Make/modify course
6974:
6975: sub createcourse {
6976: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
6977: $course_owner,$crstype,$cnum,$context,$category)=@_;
6978: $url=&declutter($url);
6979: my $cid='';
6980: if ($context eq 'requestcourses') {
6981: my $can_create = 0;
6982: my ($ownername,$ownerdom) = split(':',$course_owner);
6983: if ($udom eq $ownerdom) {
6984: if (&usertools_access($ownername,$ownerdom,$category,undef,
6985: $context)) {
6986: $can_create = 1;
6987: }
6988: } else {
6989: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
6990: $category);
6991: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
6992: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
6993: if (@curr > 0) {
6994: my @options = qw(approval validate autolimit);
6995: my $optregex = join('|',@options);
6996: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
6997: $can_create = 1;
6998: }
6999: }
7000: }
7001: }
7002: if ($can_create) {
7003: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7004: unless (&allowed('ccc',$udom)) {
7005: return 'refused';
7006: }
7007: }
7008: } else {
7009: return 'refused';
7010: }
7011: } elsif (!&allowed('ccc',$udom)) {
7012: return 'refused';
7013: }
7014: # --------------------------------------------------------------- Get Unique ID
7015: my $uname;
7016: if ($cnum =~ /^$match_courseid$/) {
7017: my $chome=&homeserver($cnum,$udom,'true');
7018: if (($chome eq '') || ($chome eq 'no_host')) {
7019: $uname = $cnum;
7020: } else {
7021: $uname = &generate_coursenum($udom,$crstype);
7022: }
7023: } else {
7024: $uname = &generate_coursenum($udom,$crstype);
7025: }
7026: return $uname if ($uname =~ /^error/);
7027: # -------------------------------------------------- Check supplied server name
7028: if (!defined($course_server)) {
7029: if (defined(&domain($udom,'primary'))) {
7030: $course_server = &domain($udom,'primary');
7031: } else {
7032: $course_server = $env{'user.home'};
7033: }
7034: }
7035: my %host_servers =
7036: &Apache::lonnet::get_servers($udom,'library');
7037: unless ($host_servers{$course_server}) {
7038: return 'error: invalid home server for course: '.$course_server;
7039: }
7040: # ------------------------------------------------------------- Make the course
7041: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7042: $course_server);
7043: unless ($reply eq 'ok') { return 'error: '.$reply; }
7044: my $uhome=&homeserver($uname,$udom,'true');
7045: if (($uhome eq '') || ($uhome eq 'no_host')) {
7046: return 'error: no such course';
7047: }
7048: # ----------------------------------------------------------------- Course made
7049: # log existence
7050: my $now = time;
7051: my $newcourse = {
7052: $udom.'_'.$uname => {
7053: description => $description,
7054: inst_code => $inst_code,
7055: owner => $course_owner,
7056: type => $crstype,
7057: creator => $env{'user.name'}.':'.
7058: $env{'user.domain'},
7059: created => $now,
7060: context => $context,
7061: },
7062: };
7063: &courseidput($udom,$newcourse,$uhome,'notime');
7064: # set toplevel url
7065: my $topurl=$url;
7066: unless ($nonstandard) {
7067: # ------------------------------------------ For standard courses, make top url
7068: my $mapurl=&clutter($url);
7069: if ($mapurl eq '/res/') { $mapurl=''; }
7070: $env{'form.initmap'}=(<<ENDINITMAP);
7071: <map>
7072: <resource id="1" type="start"></resource>
7073: <resource id="2" src="$mapurl"></resource>
7074: <resource id="3" type="finish"></resource>
7075: <link index="1" from="1" to="2"></link>
7076: <link index="2" from="2" to="3"></link>
7077: </map>
7078: ENDINITMAP
7079: $topurl=&declutter(
7080: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7081: );
7082: }
7083: # ----------------------------------------------------------- Write preferences
7084: &writecoursepref($udom.'_'.$uname,
7085: ('description' => $description,
7086: 'url' => $topurl,
7087: 'internal.creator' => $env{'user.name'}.':'.
7088: $env{'user.domain'},
7089: 'internal.created' => $now,
7090: 'internal.creationcontext' => $context)
7091: );
7092: return '/'.$udom.'/'.$uname;
7093: }
7094:
7095: # ------------------------------------------------------------------- Create ID
7096: sub generate_coursenum {
7097: my ($udom,$crstype) = @_;
7098: my $domdesc = &domain($udom);
7099: return 'error: invalid domain' if ($domdesc eq '');
7100: my $first;
7101: if ($crstype eq 'Community') {
7102: $first = '0';
7103: } else {
7104: $first = int(1+rand(9));
7105: }
7106: my $uname=$first.
7107: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7108: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7109: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7110: # ----------------------------------------------- Make sure that does not exist
7111: my $uhome=&homeserver($uname,$udom,'true');
7112: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7113: if ($crstype eq 'Community') {
7114: $first = '0';
7115: } else {
7116: $first = int(1+rand(9));
7117: }
7118: $uname=$first.
7119: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7120: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7121: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7122: $uhome=&homeserver($uname,$udom,'true');
7123: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7124: return 'error: unable to generate unique course-ID';
7125: }
7126: }
7127: return $uname;
7128: }
7129:
7130: sub is_course {
7131: my ($cdom,$cnum) = @_;
7132: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7133: undef,'.');
7134: if (exists($courses{$cdom.'_'.$cnum})) {
7135: return 1;
7136: }
7137: return 0;
7138: }
7139:
7140: sub store_userdata {
7141: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7142: my $result;
7143: if ($datakey ne '') {
7144: if (ref($storehash) eq 'HASH') {
7145: if ($udom eq '' || $uname eq '') {
7146: $udom = $env{'user.domain'};
7147: $uname = $env{'user.name'};
7148: }
7149: my $uhome=&homeserver($uname,$udom);
7150: if (($uhome eq '') || ($uhome eq 'no_host')) {
7151: $result = 'error: no_host';
7152: } else {
7153: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7154: $storehash->{'host'} = $perlvar{'lonHostID'};
7155:
7156: my $namevalue='';
7157: foreach my $key (keys(%{$storehash})) {
7158: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7159: }
7160: $namevalue=~s/\&$//;
7161: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
7162: "$namespace:$datakey:$namevalue",$uhome);
7163: }
7164: } else {
7165: $result = 'error: data to store was not a hash reference';
7166: }
7167: } else {
7168: $result= 'error: invalid requestkey';
7169: }
7170: return $result;
7171: }
7172:
7173: # ---------------------------------------------------------- Assign Custom Role
7174:
7175: sub assigncustomrole {
7176: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7177: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7178: $end,$start,$deleteflag,$selfenroll,$context);
7179: }
7180:
7181: # ----------------------------------------------------------------- Revoke Role
7182:
7183: sub revokerole {
7184: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7185: my $now=time;
7186: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7187: }
7188:
7189: # ---------------------------------------------------------- Revoke Custom Role
7190:
7191: sub revokecustomrole {
7192: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7193: my $now=time;
7194: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7195: $deleteflag,$selfenroll,$context);
7196: }
7197:
7198: # ------------------------------------------------------------ Disk usage
7199: sub diskusage {
7200: my ($udom,$uname,$directorypath,$getpropath)=@_;
7201: $directorypath =~ s/\/$//;
7202: my $listing=&reply('du2:'.&escape($directorypath).':'
7203: .&escape($getpropath).':'.&escape($uname).':'
7204: .&escape($udom),homeserver($uname,$udom));
7205: if ($listing eq 'unknown_cmd') {
7206: if ($getpropath) {
7207: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7208: }
7209: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7210: }
7211: return $listing;
7212: }
7213:
7214: sub is_locked {
7215: my ($file_name, $domain, $user) = @_;
7216: my @check;
7217: my $is_locked;
7218: push @check, $file_name;
7219: my %locked = &get('file_permissions',\@check,
7220: $env{'user.domain'},$env{'user.name'});
7221: my ($tmp)=keys(%locked);
7222: if ($tmp=~/^error:/) { undef(%locked); }
7223:
7224: if (ref($locked{$file_name}) eq 'ARRAY') {
7225: $is_locked = 'false';
7226: foreach my $entry (@{$locked{$file_name}}) {
7227: if (ref($entry) eq 'ARRAY') {
7228: $is_locked = 'true';
7229: last;
7230: }
7231: }
7232: } else {
7233: $is_locked = 'false';
7234: }
7235: }
7236:
7237: sub declutter_portfile {
7238: my ($file) = @_;
7239: $file =~ s{^(/portfolio/|portfolio/)}{/};
7240: return $file;
7241: }
7242:
7243: # ------------------------------------------------------------- Mark as Read Only
7244:
7245: sub mark_as_readonly {
7246: my ($domain,$user,$files,$what) = @_;
7247: my %current_permissions = &dump('file_permissions',$domain,$user);
7248: my ($tmp)=keys(%current_permissions);
7249: if ($tmp=~/^error:/) { undef(%current_permissions); }
7250: foreach my $file (@{$files}) {
7251: $file = &declutter_portfile($file);
7252: push(@{$current_permissions{$file}},$what);
7253: }
7254: &put('file_permissions',\%current_permissions,$domain,$user);
7255: return;
7256: }
7257:
7258: # ------------------------------------------------------------Save Selected Files
7259:
7260: sub save_selected_files {
7261: my ($user, $path, @files) = @_;
7262: my $filename = $user."savedfiles";
7263: my @other_files = &files_not_in_path($user, $path);
7264: open (OUT, '>'.$tmpdir.$filename);
7265: foreach my $file (@files) {
7266: print (OUT $env{'form.currentpath'}.$file."\n");
7267: }
7268: foreach my $file (@other_files) {
7269: print (OUT $file."\n");
7270: }
7271: close (OUT);
7272: return 'ok';
7273: }
7274:
7275: sub clear_selected_files {
7276: my ($user) = @_;
7277: my $filename = $user."savedfiles";
7278: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7279: print (OUT undef);
7280: close (OUT);
7281: return ("ok");
7282: }
7283:
7284: sub files_in_path {
7285: my ($user, $path) = @_;
7286: my $filename = $user."savedfiles";
7287: my %return_files;
7288: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7289: while (my $line_in = <IN>) {
7290: chomp ($line_in);
7291: my @paths_and_file = split (m!/!, $line_in);
7292: my $file_part = pop (@paths_and_file);
7293: my $path_part = join ('/', @paths_and_file);
7294: $path_part.='/';
7295: my $path_and_file = $path_part.$file_part;
7296: if ($path_part eq $path) {
7297: $return_files{$file_part}= 'selected';
7298: }
7299: }
7300: close (IN);
7301: return (\%return_files);
7302: }
7303:
7304: # called in portfolio select mode, to show files selected NOT in current directory
7305: sub files_not_in_path {
7306: my ($user, $path) = @_;
7307: my $filename = $user."savedfiles";
7308: my @return_files;
7309: my $path_part;
7310: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7311: while (my $line = <IN>) {
7312: #ok, I know it's clunky, but I want it to work
7313: my @paths_and_file = split(m|/|, $line);
7314: my $file_part = pop(@paths_and_file);
7315: chomp($file_part);
7316: my $path_part = join('/', @paths_and_file);
7317: $path_part .= '/';
7318: my $path_and_file = $path_part.$file_part;
7319: if ($path_part ne $path) {
7320: push(@return_files, ($path_and_file));
7321: }
7322: }
7323: close(OUT);
7324: return (@return_files);
7325: }
7326:
7327: #----------------------------------------------Get portfolio file permissions
7328:
7329: sub get_portfile_permissions {
7330: my ($domain,$user) = @_;
7331: my %current_permissions = &dump('file_permissions',$domain,$user);
7332: my ($tmp)=keys(%current_permissions);
7333: if ($tmp=~/^error:/) { undef(%current_permissions); }
7334: return \%current_permissions;
7335: }
7336:
7337: #---------------------------------------------Get portfolio file access controls
7338:
7339: sub get_access_controls {
7340: my ($current_permissions,$group,$file) = @_;
7341: my %access;
7342: my $real_file = $file;
7343: $file =~ s/\.meta$//;
7344: if (defined($file)) {
7345: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7346: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7347: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7348: }
7349: }
7350: } else {
7351: foreach my $key (keys(%{$current_permissions})) {
7352: if ($key =~ /\0accesscontrol$/) {
7353: if (defined($group)) {
7354: if ($key !~ m-^\Q$group\E/-) {
7355: next;
7356: }
7357: }
7358: my ($fullpath) = split(/\0/,$key);
7359: if (ref($$current_permissions{$key}) eq 'HASH') {
7360: foreach my $control (keys(%{$$current_permissions{$key}})) {
7361: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7362: }
7363: }
7364: }
7365: }
7366: }
7367: return %access;
7368: }
7369:
7370: sub modify_access_controls {
7371: my ($file_name,$changes,$domain,$user)=@_;
7372: my ($outcome,$deloutcome);
7373: my %store_permissions;
7374: my %new_values;
7375: my %new_control;
7376: my %translation;
7377: my @deletions = ();
7378: my $now = time;
7379: if (exists($$changes{'activate'})) {
7380: if (ref($$changes{'activate'}) eq 'HASH') {
7381: my @newitems = sort(keys(%{$$changes{'activate'}}));
7382: my $numnew = scalar(@newitems);
7383: for (my $i=0; $i<$numnew; $i++) {
7384: my $newkey = $newitems[$i];
7385: my $newid = &Apache::loncommon::get_cgi_id();
7386: if ($newkey =~ /^\d+:/) {
7387: $newkey =~ s/^(\d+)/$newid/;
7388: $translation{$1} = $newid;
7389: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7390: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7391: $translation{$1} = $newid;
7392: }
7393: $new_values{$file_name."\0".$newkey} =
7394: $$changes{'activate'}{$newitems[$i]};
7395: $new_control{$newkey} = $now;
7396: }
7397: }
7398: }
7399: my %todelete;
7400: my %changed_items;
7401: foreach my $action ('delete','update') {
7402: if (exists($$changes{$action})) {
7403: if (ref($$changes{$action}) eq 'HASH') {
7404: foreach my $key (keys(%{$$changes{$action}})) {
7405: my ($itemnum) = ($key =~ /^([^:]+):/);
7406: if ($action eq 'delete') {
7407: $todelete{$itemnum} = 1;
7408: } else {
7409: $changed_items{$itemnum} = $key;
7410: }
7411: }
7412: }
7413: }
7414: }
7415: # get lock on access controls for file.
7416: my $lockhash = {
7417: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7418: ':'.$env{'user.domain'},
7419: };
7420: my $tries = 0;
7421: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7422:
7423: while (($gotlock ne 'ok') && $tries <3) {
7424: $tries ++;
7425: sleep 1;
7426: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7427: }
7428: if ($gotlock eq 'ok') {
7429: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7430: my ($tmp)=keys(%curr_permissions);
7431: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7432: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7433: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7434: if (ref($curr_controls) eq 'HASH') {
7435: foreach my $control_item (keys(%{$curr_controls})) {
7436: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7437: if (defined($todelete{$itemnum})) {
7438: push(@deletions,$file_name."\0".$control_item);
7439: } else {
7440: if (defined($changed_items{$itemnum})) {
7441: $new_control{$changed_items{$itemnum}} = $now;
7442: push(@deletions,$file_name."\0".$control_item);
7443: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7444: } else {
7445: $new_control{$control_item} = $$curr_controls{$control_item};
7446: }
7447: }
7448: }
7449: }
7450: }
7451: my ($group);
7452: if (&is_course($domain,$user)) {
7453: ($group,my $file) = split(/\//,$file_name,2);
7454: }
7455: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7456: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7457: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7458: # remove lock
7459: my @del_lock = ($file_name."\0".'locked_access_records');
7460: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7461: my $sqlresult =
7462: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7463: $group);
7464: } else {
7465: $outcome = "error: could not obtain lockfile\n";
7466: }
7467: return ($outcome,$deloutcome,\%new_values,\%translation);
7468: }
7469:
7470: sub make_public_indefinitely {
7471: my ($requrl) = @_;
7472: my $now = time;
7473: my $action = 'activate';
7474: my $aclnum = 0;
7475: if (&is_portfolio_url($requrl)) {
7476: my (undef,$udom,$unum,$file_name,$group) =
7477: &parse_portfolio_url($requrl);
7478: my $current_perms = &get_portfile_permissions($udom,$unum);
7479: my %access_controls = &get_access_controls($current_perms,
7480: $group,$file_name);
7481: foreach my $key (keys(%{$access_controls{$file_name}})) {
7482: my ($num,$scope,$end,$start) =
7483: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7484: if ($scope eq 'public') {
7485: if ($start <= $now && $end == 0) {
7486: $action = 'none';
7487: } else {
7488: $action = 'update';
7489: $aclnum = $num;
7490: }
7491: last;
7492: }
7493: }
7494: if ($action eq 'none') {
7495: return 'ok';
7496: } else {
7497: my %changes;
7498: my $newend = 0;
7499: my $newstart = $now;
7500: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7501: $changes{$action}{$newkey} = {
7502: type => 'public',
7503: time => {
7504: start => $newstart,
7505: end => $newend,
7506: },
7507: };
7508: my ($outcome,$deloutcome,$new_values,$translation) =
7509: &modify_access_controls($file_name,\%changes,$udom,$unum);
7510: return $outcome;
7511: }
7512: } else {
7513: return 'invalid';
7514: }
7515: }
7516:
7517: #------------------------------------------------------Get Marked as Read Only
7518:
7519: sub get_marked_as_readonly {
7520: my ($domain,$user,$what,$group) = @_;
7521: my $current_permissions = &get_portfile_permissions($domain,$user);
7522: my @readonly_files;
7523: my $cmp1=$what;
7524: if (ref($what)) { $cmp1=join('',@{$what}) };
7525: while (my ($file_name,$value) = each(%{$current_permissions})) {
7526: if (defined($group)) {
7527: if ($file_name !~ m-^\Q$group\E/-) {
7528: next;
7529: }
7530: }
7531: if (ref($value) eq "ARRAY"){
7532: foreach my $stored_what (@{$value}) {
7533: my $cmp2=$stored_what;
7534: if (ref($stored_what) eq 'ARRAY') {
7535: $cmp2=join('',@{$stored_what});
7536: }
7537: if ($cmp1 eq $cmp2) {
7538: push(@readonly_files, $file_name);
7539: last;
7540: } elsif (!defined($what)) {
7541: push(@readonly_files, $file_name);
7542: last;
7543: }
7544: }
7545: }
7546: }
7547: return @readonly_files;
7548: }
7549: #-----------------------------------------------------------Get Marked as Read Only Hash
7550:
7551: sub get_marked_as_readonly_hash {
7552: my ($current_permissions,$group,$what) = @_;
7553: my %readonly_files;
7554: while (my ($file_name,$value) = each(%{$current_permissions})) {
7555: if (defined($group)) {
7556: if ($file_name !~ m-^\Q$group\E/-) {
7557: next;
7558: }
7559: }
7560: if (ref($value) eq "ARRAY"){
7561: foreach my $stored_what (@{$value}) {
7562: if (ref($stored_what) eq 'ARRAY') {
7563: foreach my $lock_descriptor(@{$stored_what}) {
7564: if ($lock_descriptor eq 'graded') {
7565: $readonly_files{$file_name} = 'graded';
7566: } elsif ($lock_descriptor eq 'handback') {
7567: $readonly_files{$file_name} = 'handback';
7568: } else {
7569: if (!exists($readonly_files{$file_name})) {
7570: $readonly_files{$file_name} = 'locked';
7571: }
7572: }
7573: }
7574: }
7575: }
7576: }
7577: }
7578: return %readonly_files;
7579: }
7580: # ------------------------------------------------------------ Unmark as Read Only
7581:
7582: sub unmark_as_readonly {
7583: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7584: # for portfolio submissions, $what contains [$symb,$crsid]
7585: my ($domain,$user,$what,$file_name,$group) = @_;
7586: $file_name = &declutter_portfile($file_name);
7587: my $symb_crs = $what;
7588: if (ref($what)) { $symb_crs=join('',@$what); }
7589: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7590: my ($tmp)=keys(%current_permissions);
7591: if ($tmp=~/^error:/) { undef(%current_permissions); }
7592: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7593: foreach my $file (@readonly_files) {
7594: my $clean_file = &declutter_portfile($file);
7595: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7596: my $current_locks = $current_permissions{$file};
7597: my @new_locks;
7598: my @del_keys;
7599: if (ref($current_locks) eq "ARRAY"){
7600: foreach my $locker (@{$current_locks}) {
7601: my $compare=$locker;
7602: if (ref($locker) eq 'ARRAY') {
7603: $compare=join('',@{$locker});
7604: if ($compare ne $symb_crs) {
7605: push(@new_locks, $locker);
7606: }
7607: }
7608: }
7609: if (scalar(@new_locks) > 0) {
7610: $current_permissions{$file} = \@new_locks;
7611: } else {
7612: push(@del_keys, $file);
7613: &del('file_permissions',\@del_keys, $domain, $user);
7614: delete($current_permissions{$file});
7615: }
7616: }
7617: }
7618: &put('file_permissions',\%current_permissions,$domain,$user);
7619: return;
7620: }
7621:
7622: # ------------------------------------------------------------ Directory lister
7623:
7624: sub dirlist {
7625: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7626: $uri=~s/^\///;
7627: $uri=~s/\/$//;
7628: my ($udom, $uname);
7629: if ($getuserdir) {
7630: $udom = $userdomain;
7631: $uname = $username;
7632: } else {
7633: (undef,$udom,$uname)=split(/\//,$uri);
7634: if(defined($userdomain)) {
7635: $udom = $userdomain;
7636: }
7637: if(defined($username)) {
7638: $uname = $username;
7639: }
7640: }
7641: my ($dirRoot,$listing,@listing_results);
7642:
7643: $dirRoot = $perlvar{'lonDocRoot'};
7644: if (defined($getpropath)) {
7645: $dirRoot = &propath($udom,$uname);
7646: $dirRoot =~ s/\/$//;
7647: } elsif (defined($getuserdir)) {
7648: my $subdir=$uname.'__';
7649: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7650: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7651: ."/$udom/$subdir/$uname";
7652: } elsif (defined($alternateRoot)) {
7653: $dirRoot = $alternateRoot;
7654: }
7655:
7656: if($udom) {
7657: if($uname) {
7658: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7659: .$getuserdir.':'.&escape($dirRoot)
7660: .':'.&escape($uname).':'.&escape($udom),
7661: &homeserver($uname,$udom));
7662: if ($listing eq 'unknown_cmd') {
7663: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7664: &homeserver($uname,$udom));
7665: } else {
7666: @listing_results = map { &unescape($_); } split(/:/,$listing);
7667: }
7668: if ($listing eq 'unknown_cmd') {
7669: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7670: &homeserver($uname,$udom));
7671: @listing_results = split(/:/,$listing);
7672: } else {
7673: @listing_results = map { &unescape($_); } split(/:/,$listing);
7674: }
7675: return @listing_results;
7676: } elsif(!$alternateRoot) {
7677: my %allusers;
7678: my %servers = &get_servers($udom,'library');
7679: foreach my $tryserver (keys(%servers)) {
7680: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7681: &escape($udom),$tryserver);
7682: if ($listing eq 'unknown_cmd') {
7683: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7684: $udom, $tryserver);
7685: } else {
7686: @listing_results = map { &unescape($_); } split(/:/,$listing);
7687: }
7688: if ($listing eq 'unknown_cmd') {
7689: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7690: $udom, $tryserver);
7691: @listing_results = split(/:/,$listing);
7692: } else {
7693: @listing_results =
7694: map { &unescape($_); } split(/:/,$listing);
7695: }
7696: if ($listing_results[0] ne 'no_such_dir' &&
7697: $listing_results[0] ne 'empty' &&
7698: $listing_results[0] ne 'con_lost') {
7699: foreach my $line (@listing_results) {
7700: my ($entry) = split(/&/,$line,2);
7701: $allusers{$entry} = 1;
7702: }
7703: }
7704: }
7705: my $alluserstr='';
7706: foreach my $user (sort(keys(%allusers))) {
7707: $alluserstr.=$user.'&user:';
7708: }
7709: $alluserstr=~s/:$//;
7710: return split(/:/,$alluserstr);
7711: } else {
7712: return ('missing user name');
7713: }
7714: } elsif(!defined($getpropath)) {
7715: my @all_domains = sort(&all_domains());
7716: foreach my $domain (@all_domains) {
7717: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7718: }
7719: return @all_domains;
7720: } else {
7721: return ('missing domain');
7722: }
7723: }
7724:
7725: # --------------------------------------------- GetFileTimestamp
7726: # This function utilizes dirlist and returns the date stamp for
7727: # when it was last modified. It will also return an error of -1
7728: # if an error occurs
7729:
7730: sub GetFileTimestamp {
7731: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7732: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7733: $studentName = &LONCAPA::clean_username($studentName);
7734: my ($fileStat) =
7735: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7736: undef,$getuserdir);
7737: my @stats = split('&', $fileStat);
7738: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7739: # @stats contains first the filename, then the stat output
7740: return $stats[10]; # so this is 10 instead of 9.
7741: } else {
7742: return -1;
7743: }
7744: }
7745:
7746: sub stat_file {
7747: my ($uri) = @_;
7748: $uri = &clutter_with_no_wrapper($uri);
7749:
7750: my ($udom,$uname,$file);
7751: if ($uri =~ m-^/(uploaded|editupload)/-) {
7752: ($udom,$uname,$file) =
7753: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7754: $file = 'userfiles/'.$file;
7755: }
7756: if ($uri =~ m-^/res/-) {
7757: ($udom,$uname) =
7758: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7759: $file = $uri;
7760: }
7761:
7762: if (!$udom || !$uname || !$file) {
7763: # unable to handle the uri
7764: return ();
7765: }
7766: my $getpropath;
7767: if ($file =~ /^userfiles\//) {
7768: $getpropath = 1;
7769: }
7770: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7771: my @stats = split('&', $result);
7772:
7773: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7774: shift(@stats); #filename is first
7775: return @stats;
7776: }
7777: return ();
7778: }
7779:
7780: # -------------------------------------------------------- Value of a Condition
7781:
7782: # gets the value of a specific preevaluated condition
7783: # stored in the string $env{user.state.<cid>}
7784: # or looks up a condition reference in the bighash and if if hasn't
7785: # already been evaluated recurses into docondval to get the value of
7786: # the condition, then memoizing it to
7787: # $env{user.state.<cid>.<condition>}
7788: sub directcondval {
7789: my $number=shift;
7790: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7791: &Apache::lonuserstate::evalstate();
7792: }
7793: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7794: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7795: } elsif ($number =~ /^_/) {
7796: my $sub_condition;
7797: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7798: &GDBM_READER(),0640)) {
7799: $sub_condition=$bighash{'conditions'.$number};
7800: untie(%bighash);
7801: }
7802: my $value = &docondval($sub_condition);
7803: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7804: return $value;
7805: }
7806: if ($env{'user.state.'.$env{'request.course.id'}}) {
7807: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7808: } else {
7809: return 2;
7810: }
7811: }
7812:
7813: # get the collection of conditions for this resource
7814: sub condval {
7815: my $condidx=shift;
7816: my $allpathcond='';
7817: foreach my $cond (split(/\|/,$condidx)) {
7818: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7819: $allpathcond.=
7820: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7821: }
7822: }
7823: $allpathcond=~s/\|$//;
7824: return &docondval($allpathcond);
7825: }
7826:
7827: #evaluates an expression of conditions
7828: sub docondval {
7829: my ($allpathcond) = @_;
7830: my $result=0;
7831: if ($env{'request.course.id'}
7832: && defined($allpathcond)) {
7833: my $operand='|';
7834: my @stack;
7835: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7836: if ($chunk eq '(') {
7837: push @stack,($operand,$result);
7838: } elsif ($chunk eq ')') {
7839: my $before=pop @stack;
7840: if (pop @stack eq '&') {
7841: $result=$result>$before?$before:$result;
7842: } else {
7843: $result=$result>$before?$result:$before;
7844: }
7845: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7846: $operand=$chunk;
7847: } else {
7848: my $new=directcondval($chunk);
7849: if ($operand eq '&') {
7850: $result=$result>$new?$new:$result;
7851: } else {
7852: $result=$result>$new?$result:$new;
7853: }
7854: }
7855: }
7856: }
7857: return $result;
7858: }
7859:
7860: # ---------------------------------------------------- Devalidate courseresdata
7861:
7862: sub devalidatecourseresdata {
7863: my ($coursenum,$coursedomain)=@_;
7864: my $hashid=$coursenum.':'.$coursedomain;
7865: &devalidate_cache_new('courseres',$hashid);
7866: }
7867:
7868:
7869: # --------------------------------------------------- Course Resourcedata Query
7870: #
7871: # Parameters:
7872: # $coursenum - Number of the course.
7873: # $coursedomain - Domain at which the course was created.
7874: # Returns:
7875: # A hash of the course parameters along (I think) with timestamps
7876: # and version info.
7877:
7878: sub get_courseresdata {
7879: my ($coursenum,$coursedomain)=@_;
7880: my $coursehom=&homeserver($coursenum,$coursedomain);
7881: my $hashid=$coursenum.':'.$coursedomain;
7882: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7883: my %dumpreply;
7884: unless (defined($cached)) {
7885: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7886: $result=\%dumpreply;
7887: my ($tmp) = keys(%dumpreply);
7888: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7889: &do_cache_new('courseres',$hashid,$result,600);
7890: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7891: return $tmp;
7892: } elsif ($tmp =~ /^(error)/) {
7893: $result=undef;
7894: &do_cache_new('courseres',$hashid,$result,600);
7895: }
7896: }
7897: return $result;
7898: }
7899:
7900: sub devalidateuserresdata {
7901: my ($uname,$udom)=@_;
7902: my $hashid="$udom:$uname";
7903: &devalidate_cache_new('userres',$hashid);
7904: }
7905:
7906: sub get_userresdata {
7907: my ($uname,$udom)=@_;
7908: #most student don\'t have any data set, check if there is some data
7909: if (&EXT_cache_status($udom,$uname)) { return undef; }
7910:
7911: my $hashid="$udom:$uname";
7912: my ($result,$cached)=&is_cached_new('userres',$hashid);
7913: if (!defined($cached)) {
7914: my %resourcedata=&dump('resourcedata',$udom,$uname);
7915: $result=\%resourcedata;
7916: &do_cache_new('userres',$hashid,$result,600);
7917: }
7918: my ($tmp)=keys(%$result);
7919: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7920: return $result;
7921: }
7922: #error 2 occurs when the .db doesn't exist
7923: if ($tmp!~/error: 2 /) {
7924: &logthis("<font color=\"blue\">WARNING:".
7925: " Trying to get resource data for ".
7926: $uname." at ".$udom.": ".
7927: $tmp."</font>");
7928: } elsif ($tmp=~/error: 2 /) {
7929: #&EXT_cache_set($udom,$uname);
7930: &do_cache_new('userres',$hashid,undef,600);
7931: undef($tmp); # not really an error so don't send it back
7932: }
7933: return $tmp;
7934: }
7935: #----------------------------------------------- resdata - return resource data
7936: # Purpose:
7937: # Return resource data for either users or for a course.
7938: # Parameters:
7939: # $name - Course/user name.
7940: # $domain - Name of the domain the user/course is registered on.
7941: # $type - Type of thing $name is (must be 'course' or 'user'
7942: # @which - Array of names of resources desired.
7943: # Returns:
7944: # The value of the first reasource in @which that is found in the
7945: # resource hash.
7946: # Exceptional Conditions:
7947: # If the $type passed in is not valid (not the string 'course' or
7948: # 'user', an undefined reference is returned.
7949: # If none of the resources are found, an undef is returned
7950: sub resdata {
7951: my ($name,$domain,$type,@which)=@_;
7952: my $result;
7953: if ($type eq 'course') {
7954: $result=&get_courseresdata($name,$domain);
7955: } elsif ($type eq 'user') {
7956: $result=&get_userresdata($name,$domain);
7957: }
7958: if (!ref($result)) { return $result; }
7959: foreach my $item (@which) {
7960: if (defined($result->{$item->[0]})) {
7961: return [$result->{$item->[0]},$item->[1]];
7962: }
7963: }
7964: return undef;
7965: }
7966:
7967: #
7968: # EXT resource caching routines
7969: #
7970:
7971: sub clear_EXT_cache_status {
7972: &delenv('cache.EXT.');
7973: }
7974:
7975: sub EXT_cache_status {
7976: my ($target_domain,$target_user) = @_;
7977: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7978: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
7979: # We know already the user has no data
7980: return 1;
7981: } else {
7982: return 0;
7983: }
7984: }
7985:
7986: sub EXT_cache_set {
7987: my ($target_domain,$target_user) = @_;
7988: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7989: #&appenv({$cachename => time});
7990: }
7991:
7992: # --------------------------------------------------------- Value of a Variable
7993: sub EXT {
7994:
7995: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
7996: unless ($varname) { return ''; }
7997: #get real user name/domain, courseid and symb
7998: my $courseid;
7999: my $publicuser;
8000: if ($symbparm) {
8001: $symbparm=&get_symb_from_alias($symbparm);
8002: }
8003: if (!($uname && $udom)) {
8004: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8005: if (!$symbparm) { $symbparm=$cursymb; }
8006: } else {
8007: $courseid=$env{'request.course.id'};
8008: }
8009: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8010: my $rest;
8011: if (defined($therest[0])) {
8012: $rest=join('.',@therest);
8013: } else {
8014: $rest='';
8015: }
8016:
8017: my $qualifierrest=$qualifier;
8018: if ($rest) { $qualifierrest.='.'.$rest; }
8019: my $spacequalifierrest=$space;
8020: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8021: if ($realm eq 'user') {
8022: # --------------------------------------------------------------- user.resource
8023: if ($space eq 'resource') {
8024: if ( (defined($Apache::lonhomework::parsing_a_problem)
8025: || defined($Apache::lonhomework::parsing_a_task))
8026: &&
8027: ($symbparm eq &symbread()) ) {
8028: # if we are in the middle of processing the resource the
8029: # get the value we are planning on committing
8030: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8031: return $Apache::lonhomework::results{$qualifierrest};
8032: } else {
8033: return $Apache::lonhomework::history{$qualifierrest};
8034: }
8035: } else {
8036: my %restored;
8037: if ($publicuser || $env{'request.state'} eq 'construct') {
8038: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8039: } else {
8040: %restored=&restore($symbparm,$courseid,$udom,$uname);
8041: }
8042: return $restored{$qualifierrest};
8043: }
8044: # ----------------------------------------------------------------- user.access
8045: } elsif ($space eq 'access') {
8046: # FIXME - not supporting calls for a specific user
8047: return &allowed($qualifier,$rest);
8048: # ------------------------------------------ user.preferences, user.environment
8049: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8050: if (($uname eq $env{'user.name'}) &&
8051: ($udom eq $env{'user.domain'})) {
8052: return $env{join('.',('environment',$qualifierrest))};
8053: } else {
8054: my %returnhash;
8055: if (!$publicuser) {
8056: %returnhash=&userenvironment($udom,$uname,
8057: $qualifierrest);
8058: }
8059: return $returnhash{$qualifierrest};
8060: }
8061: # ----------------------------------------------------------------- user.course
8062: } elsif ($space eq 'course') {
8063: # FIXME - not supporting calls for a specific user
8064: return $env{join('.',('request.course',$qualifier))};
8065: # ------------------------------------------------------------------- user.role
8066: } elsif ($space eq 'role') {
8067: # FIXME - not supporting calls for a specific user
8068: my ($role,$where)=split(/\./,$env{'request.role'});
8069: if ($qualifier eq 'value') {
8070: return $role;
8071: } elsif ($qualifier eq 'extent') {
8072: return $where;
8073: }
8074: # ----------------------------------------------------------------- user.domain
8075: } elsif ($space eq 'domain') {
8076: return $udom;
8077: # ------------------------------------------------------------------- user.name
8078: } elsif ($space eq 'name') {
8079: return $uname;
8080: # ---------------------------------------------------- Any other user namespace
8081: } else {
8082: my %reply;
8083: if (!$publicuser) {
8084: %reply=&get($space,[$qualifierrest],$udom,$uname);
8085: }
8086: return $reply{$qualifierrest};
8087: }
8088: } elsif ($realm eq 'query') {
8089: # ---------------------------------------------- pull stuff out of query string
8090: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8091: [$spacequalifierrest]);
8092: return $env{'form.'.$spacequalifierrest};
8093: } elsif ($realm eq 'request') {
8094: # ------------------------------------------------------------- request.browser
8095: if ($space eq 'browser') {
8096: if ($qualifier eq 'textremote') {
8097: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8098: return 1;
8099: } else {
8100: return 0;
8101: }
8102: } else {
8103: return $env{'browser.'.$qualifier};
8104: }
8105: # ------------------------------------------------------------ request.filename
8106: } else {
8107: return $env{'request.'.$spacequalifierrest};
8108: }
8109: } elsif ($realm eq 'course') {
8110: # ---------------------------------------------------------- course.description
8111: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8112: } elsif ($realm eq 'resource') {
8113:
8114: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8115: if (!$symbparm) { $symbparm=&symbread(); }
8116: }
8117:
8118: if ($space eq 'title') {
8119: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8120: return &gettitle($symbparm);
8121: }
8122:
8123: if ($space eq 'map') {
8124: my ($map) = &decode_symb($symbparm);
8125: return &symbread($map);
8126: }
8127: if ($space eq 'filename') {
8128: if ($symbparm) {
8129: return &clutter((&decode_symb($symbparm))[2]);
8130: }
8131: return &hreflocation('',$env{'request.filename'});
8132: }
8133:
8134: my ($section, $group, @groups);
8135: my ($courselevelm,$courselevel);
8136: if ($symbparm && defined($courseid) &&
8137: $courseid eq $env{'request.course.id'}) {
8138:
8139: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8140:
8141: # ----------------------------------------------------- Cascading lookup scheme
8142: my $symbp=$symbparm;
8143: my $mapp=&deversion((&decode_symb($symbp))[0]);
8144:
8145: my $symbparm=$symbp.'.'.$spacequalifierrest;
8146: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8147:
8148: if (($env{'user.name'} eq $uname) &&
8149: ($env{'user.domain'} eq $udom)) {
8150: $section=$env{'request.course.sec'};
8151: @groups = split(/:/,$env{'request.course.groups'});
8152: @groups=&sort_course_groups($courseid,@groups);
8153: } else {
8154: if (! defined($usection)) {
8155: $section=&getsection($udom,$uname,$courseid);
8156: } else {
8157: $section = $usection;
8158: }
8159: @groups = &get_users_groups($udom,$uname,$courseid);
8160: }
8161:
8162: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8163: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8164: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8165:
8166: $courselevel=$courseid.'.'.$spacequalifierrest;
8167: my $courselevelr=$courseid.'.'.$symbparm;
8168: $courselevelm=$courseid.'.'.$mapparm;
8169:
8170: # ----------------------------------------------------------- first, check user
8171:
8172: my $userreply=&resdata($uname,$udom,'user',
8173: ([$courselevelr,'resource'],
8174: [$courselevelm,'map' ],
8175: [$courselevel, 'course' ]));
8176: if (defined($userreply)) { return &get_reply($userreply); }
8177:
8178: # ------------------------------------------------ second, check some of course
8179: my $coursereply;
8180: if (@groups > 0) {
8181: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8182: $mapparm,$spacequalifierrest);
8183: if (defined($coursereply)) { return &get_reply($coursereply); }
8184: }
8185:
8186: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8187: $env{'course.'.$courseid.'.domain'},
8188: 'course',
8189: ([$seclevelr, 'resource'],
8190: [$seclevelm, 'map' ],
8191: [$seclevel, 'course' ],
8192: [$courselevelr,'resource']));
8193: if (defined($coursereply)) { return &get_reply($coursereply); }
8194:
8195: # ------------------------------------------------------ third, check map parms
8196: my %parmhash=();
8197: my $thisparm='';
8198: if (tie(%parmhash,'GDBM_File',
8199: $env{'request.course.fn'}.'_parms.db',
8200: &GDBM_READER(),0640)) {
8201: $thisparm=$parmhash{$symbparm};
8202: untie(%parmhash);
8203: }
8204: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8205: }
8206: # ------------------------------------------ fourth, look in resource metadata
8207:
8208: $spacequalifierrest=~s/\./\_/;
8209: my $filename;
8210: if (!$symbparm) { $symbparm=&symbread(); }
8211: if ($symbparm) {
8212: $filename=(&decode_symb($symbparm))[2];
8213: } else {
8214: $filename=$env{'request.filename'};
8215: }
8216: my $metadata=&metadata($filename,$spacequalifierrest);
8217: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8218: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8219: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8220:
8221: # ---------------------------------------------- fourth, look in rest of course
8222: if ($symbparm && defined($courseid) &&
8223: $courseid eq $env{'request.course.id'}) {
8224: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8225: $env{'course.'.$courseid.'.domain'},
8226: 'course',
8227: ([$courselevelm,'map' ],
8228: [$courselevel, 'course']));
8229: if (defined($coursereply)) { return &get_reply($coursereply); }
8230: }
8231: # ------------------------------------------------------------------ Cascade up
8232: unless ($space eq '0') {
8233: my @parts=split(/_/,$space);
8234: my $id=pop(@parts);
8235: my $part=join('_',@parts);
8236: if ($part eq '') { $part='0'; }
8237: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8238: $symbparm,$udom,$uname,$section,1);
8239: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8240: }
8241: if ($recurse) { return undef; }
8242: my $pack_def=&packages_tab_default($filename,$varname);
8243: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8244: # ---------------------------------------------------- Any other user namespace
8245: } elsif ($realm eq 'environment') {
8246: # ----------------------------------------------------------------- environment
8247: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8248: return $env{'environment.'.$spacequalifierrest};
8249: } else {
8250: if ($uname eq 'anonymous' && $udom eq '') {
8251: return '';
8252: }
8253: my %returnhash=&userenvironment($udom,$uname,
8254: $spacequalifierrest);
8255: return $returnhash{$spacequalifierrest};
8256: }
8257: } elsif ($realm eq 'system') {
8258: # ----------------------------------------------------------------- system.time
8259: if ($space eq 'time') {
8260: return time;
8261: }
8262: } elsif ($realm eq 'server') {
8263: # ----------------------------------------------------------------- system.time
8264: if ($space eq 'name') {
8265: return $ENV{'SERVER_NAME'};
8266: }
8267: }
8268: return '';
8269: }
8270:
8271: sub get_reply {
8272: my ($reply_value) = @_;
8273: if (ref($reply_value) eq 'ARRAY') {
8274: if (wantarray) {
8275: return @$reply_value;
8276: }
8277: return $reply_value->[0];
8278: } else {
8279: return $reply_value;
8280: }
8281: }
8282:
8283: sub check_group_parms {
8284: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8285: my @groupitems = ();
8286: my $resultitem;
8287: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8288: foreach my $group (@{$groups}) {
8289: foreach my $level (@levels) {
8290: my $item = $courseid.'.['.$group.'].'.$level->[0];
8291: push(@groupitems,[$item,$level->[1]]);
8292: }
8293: }
8294: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8295: $env{'course.'.$courseid.'.domain'},
8296: 'course',@groupitems);
8297: return $coursereply;
8298: }
8299:
8300: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8301: my ($courseid,@groups) = @_;
8302: @groups = sort(@groups);
8303: return @groups;
8304: }
8305:
8306: sub packages_tab_default {
8307: my ($uri,$varname)=@_;
8308: my (undef,$part,$name)=split(/\./,$varname);
8309:
8310: my (@extension,@specifics,$do_default);
8311: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8312: my ($pack_type,$pack_part)=split(/_/,$package,2);
8313: if ($pack_type eq 'default') {
8314: $do_default=1;
8315: } elsif ($pack_type eq 'extension') {
8316: push(@extension,[$package,$pack_type,$pack_part]);
8317: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8318: # only look at packages defaults for packages that this id is
8319: push(@specifics,[$package,$pack_type,$pack_part]);
8320: }
8321: }
8322: # first look for a package that matches the requested part id
8323: foreach my $package (@specifics) {
8324: my (undef,$pack_type,$pack_part)=@{$package};
8325: next if ($pack_part ne $part);
8326: if (defined($packagetab{"$pack_type&$name&default"})) {
8327: return $packagetab{"$pack_type&$name&default"};
8328: }
8329: }
8330: # look for any possible matching non extension_ package
8331: foreach my $package (@specifics) {
8332: my (undef,$pack_type,$pack_part)=@{$package};
8333: if (defined($packagetab{"$pack_type&$name&default"})) {
8334: return $packagetab{"$pack_type&$name&default"};
8335: }
8336: if ($pack_type eq 'part') { $pack_part='0'; }
8337: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8338: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8339: }
8340: }
8341: # look for any posible extension_ match
8342: foreach my $package (@extension) {
8343: my ($package,$pack_type)=@{$package};
8344: if (defined($packagetab{"$pack_type&$name&default"})) {
8345: return $packagetab{"$pack_type&$name&default"};
8346: }
8347: if (defined($packagetab{$package."&$name&default"})) {
8348: return $packagetab{$package."&$name&default"};
8349: }
8350: }
8351: # look for a global default setting
8352: if ($do_default && defined($packagetab{"default&$name&default"})) {
8353: return $packagetab{"default&$name&default"};
8354: }
8355: return undef;
8356: }
8357:
8358: sub add_prefix_and_part {
8359: my ($prefix,$part)=@_;
8360: my $keyroot;
8361: if (defined($prefix) && $prefix !~ /^__/) {
8362: # prefix that has a part already
8363: $keyroot=$prefix;
8364: } elsif (defined($prefix)) {
8365: # prefix that is missing a part
8366: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8367: } else {
8368: # no prefix at all
8369: if (defined($part)) { $keyroot='_'.$part; }
8370: }
8371: return $keyroot;
8372: }
8373:
8374: # ---------------------------------------------------------------- Get metadata
8375:
8376: my %metaentry;
8377: my %importedpartids;
8378: sub metadata {
8379: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8380: $uri=&declutter($uri);
8381: # if it is a non metadata possible uri return quickly
8382: if (($uri eq '') ||
8383: (($uri =~ m|^/*adm/|) &&
8384: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8385: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
8386: return undef;
8387: }
8388: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8389: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8390: return undef;
8391: }
8392: my $filename=$uri;
8393: $uri=~s/\.meta$//;
8394: #
8395: # Is the metadata already cached?
8396: # Look at timestamp of caching
8397: # Everything is cached by the main uri, libraries are never directly cached
8398: #
8399: if (!defined($liburi)) {
8400: my ($result,$cached)=&is_cached_new('meta',$uri);
8401: if (defined($cached)) { return $result->{':'.$what}; }
8402: }
8403: {
8404: # Imported parts would go here
8405: my %importedids=();
8406: my @origfileimportpartids=();
8407: my $importedparts=0;
8408: #
8409: # Is this a recursive call for a library?
8410: #
8411: # if (! exists($metacache{$uri})) {
8412: # $metacache{$uri}={};
8413: # }
8414: my $cachetime = 60*60;
8415: if ($liburi) {
8416: $liburi=&declutter($liburi);
8417: $filename=$liburi;
8418: } else {
8419: &devalidate_cache_new('meta',$uri);
8420: undef(%metaentry);
8421: }
8422: my %metathesekeys=();
8423: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8424: my $metastring;
8425: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8426: my $which = &hreflocation('','/'.($liburi || $uri));
8427: $metastring =
8428: &Apache::lonnet::ssi_body($which,
8429: ('grade_target' => 'meta'));
8430: $cachetime = 1; # only want this cached in the child not long term
8431: } elsif ($uri !~ m -^(editupload)/-) {
8432: my $file=&filelocation('',&clutter($filename));
8433: #push(@{$metaentry{$uri.'.file'}},$file);
8434: $metastring=&getfile($file);
8435: }
8436: my $parser=HTML::LCParser->new(\$metastring);
8437: my $token;
8438: undef %metathesekeys;
8439: while ($token=$parser->get_token) {
8440: if ($token->[0] eq 'S') {
8441: if (defined($token->[2]->{'package'})) {
8442: #
8443: # This is a package - get package info
8444: #
8445: my $package=$token->[2]->{'package'};
8446: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8447: if (defined($token->[2]->{'id'})) {
8448: $keyroot.='_'.$token->[2]->{'id'};
8449: }
8450: if ($metaentry{':packages'}) {
8451: $metaentry{':packages'}.=','.$package.$keyroot;
8452: } else {
8453: $metaentry{':packages'}=$package.$keyroot;
8454: }
8455: foreach my $pack_entry (keys(%packagetab)) {
8456: my $part=$keyroot;
8457: $part=~s/^\_//;
8458: if ($pack_entry=~/^\Q$package\E\&/ ||
8459: $pack_entry=~/^\Q$package\E_0\&/) {
8460: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8461: # ignore package.tab specified default values
8462: # here &package_tab_default() will fetch those
8463: if ($subp eq 'default') { next; }
8464: my $value=$packagetab{$pack_entry};
8465: my $unikey;
8466: if ($pack =~ /_0$/) {
8467: $unikey='parameter_0_'.$name;
8468: $part=0;
8469: } else {
8470: $unikey='parameter'.$keyroot.'_'.$name;
8471: }
8472: if ($subp eq 'display') {
8473: $value.=' [Part: '.$part.']';
8474: }
8475: $metaentry{':'.$unikey.'.part'}=$part;
8476: $metathesekeys{$unikey}=1;
8477: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8478: $metaentry{':'.$unikey.'.'.$subp}=$value;
8479: }
8480: if (defined($metaentry{':'.$unikey.'.default'})) {
8481: $metaentry{':'.$unikey}=
8482: $metaentry{':'.$unikey.'.default'};
8483: }
8484: }
8485: }
8486: } else {
8487: #
8488: # This is not a package - some other kind of start tag
8489: #
8490: my $entry=$token->[1];
8491: my $unikey='';
8492:
8493: if ($entry eq 'import') {
8494: #
8495: # Importing a library here
8496: #
8497: my $location=$parser->get_text('/import');
8498: my $dir=$filename;
8499: $dir=~s|[^/]*$||;
8500: $location=&filelocation($dir,$location);
8501:
8502: my $importmode=$token->[2]->{'importmode'};
8503: if ($importmode eq 'problem') {
8504: # Import as problem/response
8505: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8506: } elsif ($importmode eq 'part') {
8507: # Import as part(s)
8508: $importedparts=1;
8509: # We need to get the original file and the imported file to get the part order correct
8510: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8511: # Load and inspect original file
8512: if ($#origfileimportpartids<0) {
8513: undef(%importedpartids);
8514: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8515: my $origfile=&getfile($origfilelocation);
8516: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8517: }
8518:
8519: # Load and inspect imported file
8520: my $impfile=&getfile($location);
8521: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8522: if ($#impfilepartids>=0) {
8523: # This problem had parts
8524: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8525: } else {
8526: # Importing by turning a single problem into a problem part
8527: # It gets the import-tags ID as part-ID
8528: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8529: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8530: }
8531: } else {
8532: # Normal import
8533: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8534: if (defined($token->[2]->{'id'})) {
8535: $unikey.='_'.$token->[2]->{'id'};
8536: }
8537: }
8538:
8539: if ($depthcount<20) {
8540: my $metadata =
8541: &metadata($uri,'keys', $location,$unikey,
8542: $depthcount+1);
8543: foreach my $meta (split(',',$metadata)) {
8544: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8545: $metathesekeys{$meta}=1;
8546: }
8547:
8548: }
8549: } else {
8550: #
8551: # Not importing, some other kind of non-package, non-library start tag
8552: #
8553: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8554: if (defined($token->[2]->{'id'})) {
8555: $unikey.='_'.$token->[2]->{'id'};
8556: }
8557: if (defined($token->[2]->{'name'})) {
8558: $unikey.='_'.$token->[2]->{'name'};
8559: }
8560: $metathesekeys{$unikey}=1;
8561: foreach my $param (@{$token->[3]}) {
8562: $metaentry{':'.$unikey.'.'.$param} =
8563: $token->[2]->{$param};
8564: }
8565: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8566: my $default=$metaentry{':'.$unikey.'.default'};
8567: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8568: # only ws inside the tag, and not in default, so use default
8569: # as value
8570: $metaentry{':'.$unikey}=$default;
8571: } elsif ( $internaltext =~ /\S/ ) {
8572: # something interesting inside the tag
8573: $metaentry{':'.$unikey}=$internaltext;
8574: } else {
8575: # no interesting values, don't set a default
8576: }
8577: # end of not-a-package not-a-library import
8578: }
8579: # end of not-a-package start tag
8580: }
8581: # the next is the end of "start tag"
8582: }
8583: }
8584: my ($extension) = ($uri =~ /\.(\w+)$/);
8585: $extension = lc($extension);
8586: if ($extension eq 'htm') { $extension='html'; }
8587:
8588: foreach my $key (keys(%packagetab)) {
8589: #no specific packages #how's our extension
8590: if ($key!~/^extension_\Q$extension\E&/) { next; }
8591: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8592: \%metathesekeys);
8593: }
8594:
8595: if (!exists($metaentry{':packages'})
8596: || $packagetab{"import_defaults&extension_$extension"}) {
8597: foreach my $key (keys(%packagetab)) {
8598: #no specific packages well let's get default then
8599: if ($key!~/^default&/) { next; }
8600: &metadata_create_package_def($uri,$key,'default',
8601: \%metathesekeys);
8602: }
8603: }
8604: # are there custom rights to evaluate
8605: if ($metaentry{':copyright'} eq 'custom') {
8606:
8607: #
8608: # Importing a rights file here
8609: #
8610: unless ($depthcount) {
8611: my $location=$metaentry{':customdistributionfile'};
8612: my $dir=$filename;
8613: $dir=~s|[^/]*$||;
8614: $location=&filelocation($dir,$location);
8615: my $rights_metadata =
8616: &metadata($uri,'keys',$location,'_rights',
8617: $depthcount+1);
8618: foreach my $rights (split(',',$rights_metadata)) {
8619: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8620: $metathesekeys{$rights}=1;
8621: }
8622: }
8623: }
8624: # uniqifiy package listing
8625: my %seen;
8626: my @uniq_packages =
8627: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8628: $metaentry{':packages'} = join(',',@uniq_packages);
8629:
8630: if ($importedparts) {
8631: # We had imported parts and need to rebuild partorder
8632: $metaentry{':partorder'}='';
8633: $metathesekeys{'partorder'}=1;
8634: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8635: if ($origfileimportpartids[$index] eq 'part') {
8636: # original part, part of the problem
8637: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8638: } else {
8639: # we have imported parts at this position
8640: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8641: }
8642: }
8643: $metaentry{':partorder'}=~s/^\,//;
8644: }
8645:
8646: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8647: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8648: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8649: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8650: # this is the end of "was not already recently cached
8651: }
8652: return $metaentry{':'.$what};
8653: }
8654:
8655: sub metadata_create_package_def {
8656: my ($uri,$key,$package,$metathesekeys)=@_;
8657: my ($pack,$name,$subp)=split(/\&/,$key);
8658: if ($subp eq 'default') { next; }
8659:
8660: if (defined($metaentry{':packages'})) {
8661: $metaentry{':packages'}.=','.$package;
8662: } else {
8663: $metaentry{':packages'}=$package;
8664: }
8665: my $value=$packagetab{$key};
8666: my $unikey;
8667: $unikey='parameter_0_'.$name;
8668: $metaentry{':'.$unikey.'.part'}=0;
8669: $$metathesekeys{$unikey}=1;
8670: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8671: $metaentry{':'.$unikey.'.'.$subp}=$value;
8672: }
8673: if (defined($metaentry{':'.$unikey.'.default'})) {
8674: $metaentry{':'.$unikey}=
8675: $metaentry{':'.$unikey.'.default'};
8676: }
8677: }
8678:
8679: sub metadata_generate_part0 {
8680: my ($metadata,$metacache,$uri) = @_;
8681: my %allnames;
8682: foreach my $metakey (keys(%$metadata)) {
8683: if ($metakey=~/^parameter\_(.*)/) {
8684: my $part=$$metacache{':'.$metakey.'.part'};
8685: my $name=$$metacache{':'.$metakey.'.name'};
8686: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8687: $allnames{$name}=$part;
8688: }
8689: }
8690: }
8691: foreach my $name (keys(%allnames)) {
8692: $$metadata{"parameter_0_$name"}=1;
8693: my $key=":parameter_0_$name";
8694: $$metacache{"$key.part"}='0';
8695: $$metacache{"$key.name"}=$name;
8696: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8697: $allnames{$name}.'_'.$name.
8698: '.type'};
8699: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8700: '.display'};
8701: my $expr='[Part: '.$allnames{$name}.']';
8702: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8703: $$metacache{"$key.display"}=$olddis;
8704: }
8705: }
8706:
8707: # ------------------------------------------------------ Devalidate title cache
8708:
8709: sub devalidate_title_cache {
8710: my ($url)=@_;
8711: if (!$env{'request.course.id'}) { return; }
8712: my $symb=&symbread($url);
8713: if (!$symb) { return; }
8714: my $key=$env{'request.course.id'}."\0".$symb;
8715: &devalidate_cache_new('title',$key);
8716: }
8717:
8718: # ------------------------------------------------- Get the title of a course
8719:
8720: sub current_course_title {
8721: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8722: }
8723: # ------------------------------------------------- Get the title of a resource
8724:
8725: sub gettitle {
8726: my $urlsymb=shift;
8727: my $symb=&symbread($urlsymb);
8728: if ($symb) {
8729: my $key=$env{'request.course.id'}."\0".$symb;
8730: my ($result,$cached)=&is_cached_new('title',$key);
8731: if (defined($cached)) {
8732: return $result;
8733: }
8734: my ($map,$resid,$url)=&decode_symb($symb);
8735: my $title='';
8736: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8737: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8738: } else {
8739: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8740: &GDBM_READER(),0640)) {
8741: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8742: $title=$bighash{'title_'.$mapid.'.'.$resid};
8743: untie(%bighash);
8744: }
8745: }
8746: $title=~s/\&colon\;/\:/gs;
8747: if ($title) {
8748: return &do_cache_new('title',$key,$title,600);
8749: }
8750: $urlsymb=$url;
8751: }
8752: my $title=&metadata($urlsymb,'title');
8753: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8754: return $title;
8755: }
8756:
8757: sub get_slot {
8758: my ($which,$cnum,$cdom)=@_;
8759: if (!$cnum || !$cdom) {
8760: (undef,my $courseid)=&whichuser();
8761: $cdom=$env{'course.'.$courseid.'.domain'};
8762: $cnum=$env{'course.'.$courseid.'.num'};
8763: }
8764: my $key=join("\0",'slots',$cdom,$cnum,$which);
8765: my %slotinfo;
8766: if (exists($remembered{$key})) {
8767: $slotinfo{$which} = $remembered{$key};
8768: } else {
8769: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8770: &Apache::lonhomework::showhash(%slotinfo);
8771: my ($tmp)=keys(%slotinfo);
8772: if ($tmp=~/^error:/) { return (); }
8773: $remembered{$key} = $slotinfo{$which};
8774: }
8775: if (ref($slotinfo{$which}) eq 'HASH') {
8776: return %{$slotinfo{$which}};
8777: }
8778: return $slotinfo{$which};
8779: }
8780: # ------------------------------------------------- Update symbolic store links
8781:
8782: sub symblist {
8783: my ($mapname,%newhash)=@_;
8784: $mapname=&deversion(&declutter($mapname));
8785: my %hash;
8786: if (($env{'request.course.fn'}) && (%newhash)) {
8787: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8788: &GDBM_WRCREAT(),0640)) {
8789: foreach my $url (keys(%newhash)) {
8790: next if ($url eq 'last_known'
8791: && $env{'form.no_update_last_known'});
8792: $hash{declutter($url)}=&encode_symb($mapname,
8793: $newhash{$url}->[1],
8794: $newhash{$url}->[0]);
8795: }
8796: if (untie(%hash)) {
8797: return 'ok';
8798: }
8799: }
8800: }
8801: return 'error';
8802: }
8803:
8804: # --------------------------------------------------------------- Verify a symb
8805:
8806: sub symbverify {
8807: my ($symb,$thisurl)=@_;
8808: my $thisfn=$thisurl;
8809: $thisfn=&declutter($thisfn);
8810: # direct jump to resource in page or to a sequence - will construct own symbs
8811: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8812: # check URL part
8813: my ($map,$resid,$url)=&decode_symb($symb);
8814:
8815: unless ($url eq $thisfn) { return 0; }
8816:
8817: $symb=&symbclean($symb);
8818: $thisurl=&deversion($thisurl);
8819: $thisfn=&deversion($thisfn);
8820:
8821: my %bighash;
8822: my $okay=0;
8823:
8824: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8825: &GDBM_READER(),0640)) {
8826: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8827: $thisurl =~ s/\?.+$//;
8828: }
8829: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8830: unless ($ids) {
8831: $ids=$bighash{'ids_/'.$thisurl};
8832: }
8833: if ($ids) {
8834: # ------------------------------------------------------------------- Has ID(s)
8835: foreach my $id (split(/\,/,$ids)) {
8836: my ($mapid,$resid)=split(/\./,$id);
8837: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8838: $symb =~ s/\?.+$//;
8839: }
8840: if (
8841: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8842: eq $symb) {
8843: if (($env{'request.role.adv'}) ||
8844: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8845: $okay=1;
8846: }
8847: }
8848: }
8849: }
8850: untie(%bighash);
8851: }
8852: return $okay;
8853: }
8854:
8855: # --------------------------------------------------------------- Clean-up symb
8856:
8857: sub symbclean {
8858: my $symb=shift;
8859: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8860: # remove version from map
8861: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8862:
8863: # remove version from URL
8864: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8865:
8866: # remove wrapper
8867:
8868: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8869: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8870: return $symb;
8871: }
8872:
8873: # ---------------------------------------------- Split symb to find map and url
8874:
8875: sub encode_symb {
8876: my ($map,$resid,$url)=@_;
8877: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8878: }
8879:
8880: sub decode_symb {
8881: my $symb=shift;
8882: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8883: my ($map,$resid,$url)=split(/___/,$symb);
8884: return (&fixversion($map),$resid,&fixversion($url));
8885: }
8886:
8887: sub fixversion {
8888: my $fn=shift;
8889: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8890: my %bighash;
8891: my $uri=&clutter($fn);
8892: my $key=$env{'request.course.id'}.'_'.$uri;
8893: # is this cached?
8894: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8895: if (defined($cached)) { return $result; }
8896: # unfortunately not cached, or expired
8897: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8898: &GDBM_READER(),0640)) {
8899: if ($bighash{'version_'.$uri}) {
8900: my $version=$bighash{'version_'.$uri};
8901: unless (($version eq 'mostrecent') ||
8902: ($version==&getversion($uri))) {
8903: $uri=~s/\.(\w+)$/\.$version\.$1/;
8904: }
8905: }
8906: untie %bighash;
8907: }
8908: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8909: }
8910:
8911: sub deversion {
8912: my $url=shift;
8913: $url=~s/\.\d+\.(\w+)$/\.$1/;
8914: return $url;
8915: }
8916:
8917: # ------------------------------------------------------ Return symb list entry
8918:
8919: sub symbread {
8920: my ($thisfn,$donotrecurse)=@_;
8921: my $cache_str='request.symbread.cached.'.$thisfn;
8922: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8923: # no filename provided? try from environment
8924: unless ($thisfn) {
8925: if ($env{'request.symb'}) {
8926: return $env{$cache_str}=&symbclean($env{'request.symb'});
8927: }
8928: $thisfn=$env{'request.filename'};
8929: }
8930: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8931: # is that filename actually a symb? Verify, clean, and return
8932: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
8933: if (&symbverify($thisfn,$1)) {
8934: return $env{$cache_str}=&symbclean($thisfn);
8935: }
8936: }
8937: $thisfn=declutter($thisfn);
8938: my %hash;
8939: my %bighash;
8940: my $syval='';
8941: if (($env{'request.course.fn'}) && ($thisfn)) {
8942: my $targetfn = $thisfn;
8943: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
8944: $targetfn = 'adm/wrapper/'.$thisfn;
8945: }
8946: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8947: $targetfn=$1;
8948: }
8949: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8950: &GDBM_READER(),0640)) {
8951: $syval=$hash{$targetfn};
8952: untie(%hash);
8953: }
8954: # ---------------------------------------------------------- There was an entry
8955: if ($syval) {
8956: #unless ($syval=~/\_\d+$/) {
8957: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8958: #&appenv({'request.ambiguous' => $thisfn});
8959: #return $env{$cache_str}='';
8960: #}
8961: #$syval.=$1;
8962: #}
8963: } else {
8964: # ------------------------------------------------------- Was not in symb table
8965: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8966: &GDBM_READER(),0640)) {
8967: # ---------------------------------------------- Get ID(s) for current resource
8968: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8969: unless ($ids) {
8970: $ids=$bighash{'ids_/'.$thisfn};
8971: }
8972: unless ($ids) {
8973: # alias?
8974: $ids=$bighash{'mapalias_'.$thisfn};
8975: }
8976: if ($ids) {
8977: # ------------------------------------------------------------------- Has ID(s)
8978: my @possibilities=split(/\,/,$ids);
8979: if ($#possibilities==0) {
8980: # ----------------------------------------------- There is only one possibility
8981: my ($mapid,$resid)=split(/\./,$ids);
8982: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8983: $resid,$thisfn);
8984: } elsif (!$donotrecurse) {
8985: # ------------------------------------------ There is more than one possibility
8986: my $realpossible=0;
8987: foreach my $id (@possibilities) {
8988: my $file=$bighash{'src_'.$id};
8989: if (&allowed('bre',$file)) {
8990: my ($mapid,$resid)=split(/\./,$id);
8991: if ($bighash{'map_type_'.$mapid} ne 'page') {
8992: $realpossible++;
8993: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8994: $resid,$thisfn);
8995: }
8996: }
8997: }
8998: if ($realpossible!=1) { $syval=''; }
8999: } else {
9000: $syval='';
9001: }
9002: }
9003: untie(%bighash)
9004: }
9005: }
9006: if ($syval) {
9007: return $env{$cache_str}=$syval;
9008: }
9009: }
9010: &appenv({'request.ambiguous' => $thisfn});
9011: return $env{$cache_str}='';
9012: }
9013:
9014: # ---------------------------------------------------------- Return random seed
9015:
9016: sub numval {
9017: my $txt=shift;
9018: $txt=~tr/A-J/0-9/;
9019: $txt=~tr/a-j/0-9/;
9020: $txt=~tr/K-T/0-9/;
9021: $txt=~tr/k-t/0-9/;
9022: $txt=~tr/U-Z/0-5/;
9023: $txt=~tr/u-z/0-5/;
9024: $txt=~s/\D//g;
9025: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9026: return int($txt);
9027: }
9028:
9029: sub numval2 {
9030: my $txt=shift;
9031: $txt=~tr/A-J/0-9/;
9032: $txt=~tr/a-j/0-9/;
9033: $txt=~tr/K-T/0-9/;
9034: $txt=~tr/k-t/0-9/;
9035: $txt=~tr/U-Z/0-5/;
9036: $txt=~tr/u-z/0-5/;
9037: $txt=~s/\D//g;
9038: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9039: my $total;
9040: foreach my $val (@txts) { $total+=$val; }
9041: if ($_64bit) { if ($total > 2**32) { return -1; } }
9042: return int($total);
9043: }
9044:
9045: sub numval3 {
9046: use integer;
9047: my $txt=shift;
9048: $txt=~tr/A-J/0-9/;
9049: $txt=~tr/a-j/0-9/;
9050: $txt=~tr/K-T/0-9/;
9051: $txt=~tr/k-t/0-9/;
9052: $txt=~tr/U-Z/0-5/;
9053: $txt=~tr/u-z/0-5/;
9054: $txt=~s/\D//g;
9055: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9056: my $total;
9057: foreach my $val (@txts) { $total+=$val; }
9058: if ($_64bit) { $total=(($total<<32)>>32); }
9059: return $total;
9060: }
9061:
9062: sub digest {
9063: my ($data)=@_;
9064: my $digest=&Digest::MD5::md5($data);
9065: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9066: my ($e,$f);
9067: {
9068: use integer;
9069: $e=($a+$b);
9070: $f=($c+$d);
9071: if ($_64bit) {
9072: $e=(($e<<32)>>32);
9073: $f=(($f<<32)>>32);
9074: }
9075: }
9076: if (wantarray) {
9077: return ($e,$f);
9078: } else {
9079: my $g;
9080: {
9081: use integer;
9082: $g=($e+$f);
9083: if ($_64bit) {
9084: $g=(($g<<32)>>32);
9085: }
9086: }
9087: return $g;
9088: }
9089: }
9090:
9091: sub latest_rnd_algorithm_id {
9092: return '64bit5';
9093: }
9094:
9095: sub get_rand_alg {
9096: my ($courseid)=@_;
9097: if (!$courseid) { $courseid=(&whichuser())[1]; }
9098: if ($courseid) {
9099: return $env{"course.$courseid.rndseed"};
9100: }
9101: return &latest_rnd_algorithm_id();
9102: }
9103:
9104: sub validCODE {
9105: my ($CODE)=@_;
9106: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9107: return 0;
9108: }
9109:
9110: sub getCODE {
9111: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9112: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9113: defined($Apache::lonhomework::parsing_a_task) ) &&
9114: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9115: return $Apache::lonhomework::history{'resource.CODE'};
9116: }
9117: return undef;
9118: }
9119:
9120: sub rndseed {
9121: my ($symb,$courseid,$domain,$username)=@_;
9122: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9123: if (!defined($symb)) {
9124: unless ($symb=$wsymb) { return time; }
9125: }
9126: if (!$courseid) { $courseid=$wcourseid; }
9127: if (!$domain) { $domain=$wdomain; }
9128: if (!$username) { $username=$wusername }
9129: my $which=&get_rand_alg();
9130:
9131: if (defined(&getCODE())) {
9132: if ($which eq '64bit5') {
9133: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9134: } elsif ($which eq '64bit4') {
9135: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9136: } else {
9137: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9138: }
9139: } elsif ($which eq '64bit5') {
9140: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9141: } elsif ($which eq '64bit4') {
9142: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9143: } elsif ($which eq '64bit3') {
9144: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9145: } elsif ($which eq '64bit2') {
9146: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9147: } elsif ($which eq '64bit') {
9148: return &rndseed_64bit($symb,$courseid,$domain,$username);
9149: }
9150: return &rndseed_32bit($symb,$courseid,$domain,$username);
9151: }
9152:
9153: sub rndseed_32bit {
9154: my ($symb,$courseid,$domain,$username)=@_;
9155: {
9156: use integer;
9157: my $symbchck=unpack("%32C*",$symb) << 27;
9158: my $symbseed=numval($symb) << 22;
9159: my $namechck=unpack("%32C*",$username) << 17;
9160: my $nameseed=numval($username) << 12;
9161: my $domainseed=unpack("%32C*",$domain) << 7;
9162: my $courseseed=unpack("%32C*",$courseid);
9163: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9164: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9165: #&logthis("rndseed :$num:$symb");
9166: if ($_64bit) { $num=(($num<<32)>>32); }
9167: return $num;
9168: }
9169: }
9170:
9171: sub rndseed_64bit {
9172: my ($symb,$courseid,$domain,$username)=@_;
9173: {
9174: use integer;
9175: my $symbchck=unpack("%32S*",$symb) << 21;
9176: my $symbseed=numval($symb) << 10;
9177: my $namechck=unpack("%32S*",$username);
9178:
9179: my $nameseed=numval($username) << 21;
9180: my $domainseed=unpack("%32S*",$domain) << 10;
9181: my $courseseed=unpack("%32S*",$courseid);
9182:
9183: my $num1=$symbchck+$symbseed+$namechck;
9184: my $num2=$nameseed+$domainseed+$courseseed;
9185: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9186: #&logthis("rndseed :$num:$symb");
9187: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9188: return "$num1,$num2";
9189: }
9190: }
9191:
9192: sub rndseed_64bit2 {
9193: my ($symb,$courseid,$domain,$username)=@_;
9194: {
9195: use integer;
9196: # strings need to be an even # of cahracters long, it it is odd the
9197: # last characters gets thrown away
9198: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9199: my $symbseed=numval($symb) << 10;
9200: my $namechck=unpack("%32S*",$username.' ');
9201:
9202: my $nameseed=numval($username) << 21;
9203: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9204: my $courseseed=unpack("%32S*",$courseid.' ');
9205:
9206: my $num1=$symbchck+$symbseed+$namechck;
9207: my $num2=$nameseed+$domainseed+$courseseed;
9208: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9209: #&logthis("rndseed :$num:$symb");
9210: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9211: return "$num1,$num2";
9212: }
9213: }
9214:
9215: sub rndseed_64bit3 {
9216: my ($symb,$courseid,$domain,$username)=@_;
9217: {
9218: use integer;
9219: # strings need to be an even # of cahracters long, it it is odd the
9220: # last characters gets thrown away
9221: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9222: my $symbseed=numval2($symb) << 10;
9223: my $namechck=unpack("%32S*",$username.' ');
9224:
9225: my $nameseed=numval2($username) << 21;
9226: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9227: my $courseseed=unpack("%32S*",$courseid.' ');
9228:
9229: my $num1=$symbchck+$symbseed+$namechck;
9230: my $num2=$nameseed+$domainseed+$courseseed;
9231: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9232: #&logthis("rndseed :$num1:$num2:$_64bit");
9233: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9234:
9235: return "$num1:$num2";
9236: }
9237: }
9238:
9239: sub rndseed_64bit4 {
9240: my ($symb,$courseid,$domain,$username)=@_;
9241: {
9242: use integer;
9243: # strings need to be an even # of cahracters long, it it is odd the
9244: # last characters gets thrown away
9245: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9246: my $symbseed=numval3($symb) << 10;
9247: my $namechck=unpack("%32S*",$username.' ');
9248:
9249: my $nameseed=numval3($username) << 21;
9250: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9251: my $courseseed=unpack("%32S*",$courseid.' ');
9252:
9253: my $num1=$symbchck+$symbseed+$namechck;
9254: my $num2=$nameseed+$domainseed+$courseseed;
9255: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9256: #&logthis("rndseed :$num1:$num2:$_64bit");
9257: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9258:
9259: return "$num1:$num2";
9260: }
9261: }
9262:
9263: sub rndseed_64bit5 {
9264: my ($symb,$courseid,$domain,$username)=@_;
9265: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9266: return "$num1:$num2";
9267: }
9268:
9269: sub rndseed_CODE_64bit {
9270: my ($symb,$courseid,$domain,$username)=@_;
9271: {
9272: use integer;
9273: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9274: my $symbseed=numval2($symb);
9275: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9276: my $CODEseed=numval(&getCODE());
9277: my $courseseed=unpack("%32S*",$courseid.' ');
9278: my $num1=$symbseed+$CODEchck;
9279: my $num2=$CODEseed+$courseseed+$symbchck;
9280: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9281: #&logthis("rndseed :$num1:$num2:$symb");
9282: if ($_64bit) { $num1=(($num1<<32)>>32); }
9283: if ($_64bit) { $num2=(($num2<<32)>>32); }
9284: return "$num1:$num2";
9285: }
9286: }
9287:
9288: sub rndseed_CODE_64bit4 {
9289: my ($symb,$courseid,$domain,$username)=@_;
9290: {
9291: use integer;
9292: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9293: my $symbseed=numval3($symb);
9294: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9295: my $CODEseed=numval3(&getCODE());
9296: my $courseseed=unpack("%32S*",$courseid.' ');
9297: my $num1=$symbseed+$CODEchck;
9298: my $num2=$CODEseed+$courseseed+$symbchck;
9299: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9300: #&logthis("rndseed :$num1:$num2:$symb");
9301: if ($_64bit) { $num1=(($num1<<32)>>32); }
9302: if ($_64bit) { $num2=(($num2<<32)>>32); }
9303: return "$num1:$num2";
9304: }
9305: }
9306:
9307: sub rndseed_CODE_64bit5 {
9308: my ($symb,$courseid,$domain,$username)=@_;
9309: my $code = &getCODE();
9310: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9311: return "$num1:$num2";
9312: }
9313:
9314: sub setup_random_from_rndseed {
9315: my ($rndseed)=@_;
9316: if ($rndseed =~/([,:])/) {
9317: my ($num1,$num2)=split(/[,:]/,$rndseed);
9318: &Math::Random::random_set_seed(abs($num1),abs($num2));
9319: } else {
9320: &Math::Random::random_set_seed_from_phrase($rndseed);
9321: }
9322: }
9323:
9324: sub latest_receipt_algorithm_id {
9325: return 'receipt3';
9326: }
9327:
9328: sub recunique {
9329: my $fucourseid=shift;
9330: my $unique;
9331: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9332: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9333: $unique=$env{"course.$fucourseid.internal.encseed"};
9334: } else {
9335: $unique=$perlvar{'lonReceipt'};
9336: }
9337: return unpack("%32C*",$unique);
9338: }
9339:
9340: sub recprefix {
9341: my $fucourseid=shift;
9342: my $prefix;
9343: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9344: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9345: $prefix=$env{"course.$fucourseid.internal.encpref"};
9346: } else {
9347: $prefix=$perlvar{'lonHostID'};
9348: }
9349: return unpack("%32C*",$prefix);
9350: }
9351:
9352: sub ireceipt {
9353: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9354:
9355: my $return =&recprefix($fucourseid).'-';
9356:
9357: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9358: $env{'request.state'} eq 'construct') {
9359: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9360: return $return;
9361: }
9362:
9363: my $cuname=unpack("%32C*",$funame);
9364: my $cudom=unpack("%32C*",$fudom);
9365: my $cucourseid=unpack("%32C*",$fucourseid);
9366: my $cusymb=unpack("%32C*",$fusymb);
9367: my $cunique=&recunique($fucourseid);
9368: my $cpart=unpack("%32S*",$part);
9369: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9370:
9371: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9372:
9373: $return.= ($cunique%$cuname+
9374: $cunique%$cudom+
9375: $cusymb%$cuname+
9376: $cusymb%$cudom+
9377: $cucourseid%$cuname+
9378: $cucourseid%$cudom+
9379: $cpart%$cuname+
9380: $cpart%$cudom);
9381: } else {
9382: $return.= ($cunique%$cuname+
9383: $cunique%$cudom+
9384: $cusymb%$cuname+
9385: $cusymb%$cudom+
9386: $cucourseid%$cuname+
9387: $cucourseid%$cudom);
9388: }
9389: return $return;
9390: }
9391:
9392: sub receipt {
9393: my ($part)=@_;
9394: my ($symb,$courseid,$domain,$name) = &whichuser();
9395: return &ireceipt($name,$domain,$courseid,$symb,$part);
9396: }
9397:
9398: sub whichuser {
9399: my ($passedsymb)=@_;
9400: my ($symb,$courseid,$domain,$name,$publicuser);
9401: if (defined($env{'form.grade_symb'})) {
9402: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9403: my $allowed=&allowed('vgr',$tmp_courseid);
9404: if (!$allowed &&
9405: exists($env{'request.course.sec'}) &&
9406: $env{'request.course.sec'} !~ /^\s*$/) {
9407: $allowed=&allowed('vgr',$tmp_courseid.
9408: '/'.$env{'request.course.sec'});
9409: }
9410: if ($allowed) {
9411: ($symb)=&get_env_multiple('form.grade_symb');
9412: $courseid=$tmp_courseid;
9413: ($domain)=&get_env_multiple('form.grade_domain');
9414: ($name)=&get_env_multiple('form.grade_username');
9415: return ($symb,$courseid,$domain,$name,$publicuser);
9416: }
9417: }
9418: if (!$passedsymb) {
9419: $symb=&symbread();
9420: } else {
9421: $symb=$passedsymb;
9422: }
9423: $courseid=$env{'request.course.id'};
9424: $domain=$env{'user.domain'};
9425: $name=$env{'user.name'};
9426: if ($name eq 'public' && $domain eq 'public') {
9427: if (!defined($env{'form.username'})) {
9428: $env{'form.username'}.=time.rand(10000000);
9429: }
9430: $name.=$env{'form.username'};
9431: }
9432: return ($symb,$courseid,$domain,$name,$publicuser);
9433:
9434: }
9435:
9436: # ------------------------------------------------------------ Serves up a file
9437: # returns either the contents of the file or
9438: # -1 if the file doesn't exist
9439: #
9440: # if the target is a file that was uploaded via DOCS,
9441: # a check will be made to see if a current copy exists on the local server,
9442: # if it does this will be served, otherwise a copy will be retrieved from
9443: # the home server for the course and stored in /home/httpd/html/userfiles on
9444: # the local server.
9445:
9446: sub getfile {
9447: my ($file) = @_;
9448: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9449: &repcopy($file);
9450: return &readfile($file);
9451: }
9452:
9453: sub repcopy_userfile {
9454: my ($file)=@_;
9455: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9456: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9457: my ($cdom,$cnum,$filename) =
9458: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9459: my $uri="/uploaded/$cdom/$cnum/$filename";
9460: if (-e "$file") {
9461: # we already have a local copy, check it out
9462: my @fileinfo = stat($file);
9463: my $rtncode;
9464: my $info;
9465: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9466: if ($lwpresp ne 'ok') {
9467: # there is no such file anymore, even though we had a local copy
9468: if ($rtncode eq '404') {
9469: unlink($file);
9470: }
9471: return -1;
9472: }
9473: if ($info < $fileinfo[9]) {
9474: # nice, the file we have is up-to-date, just say okay
9475: return 'ok';
9476: } else {
9477: # the file is outdated, get rid of it
9478: unlink($file);
9479: }
9480: }
9481: # one way or the other, at this point, we don't have the file
9482: # construct the correct path for the file
9483: my @parts = ($cdom,$cnum);
9484: if ($filename =~ m|^(.+)/[^/]+$|) {
9485: push @parts, split(/\//,$1);
9486: }
9487: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9488: foreach my $part (@parts) {
9489: $path .= '/'.$part;
9490: if (!-e $path) {
9491: mkdir($path,0770);
9492: }
9493: }
9494: # now the path exists for sure
9495: # get a user agent
9496: my $ua=new LWP::UserAgent;
9497: my $transferfile=$file.'.in.transfer';
9498: # FIXME: this should flock
9499: if (-e $transferfile) { return 'ok'; }
9500: my $request;
9501: $uri=~s/^\///;
9502: my $homeserver = &homeserver($cnum,$cdom);
9503: my $protocol = $protocol{$homeserver};
9504: $protocol = 'http' if ($protocol ne 'https');
9505: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9506: my $response=$ua->request($request,$transferfile);
9507: # did it work?
9508: if ($response->is_error()) {
9509: unlink($transferfile);
9510: &logthis("Userfile repcopy failed for $uri");
9511: return -1;
9512: }
9513: # worked, rename the transfer file
9514: rename($transferfile,$file);
9515: return 'ok';
9516: }
9517:
9518: sub tokenwrapper {
9519: my $uri=shift;
9520: $uri=~s|^https?\://([^/]+)||;
9521: $uri=~s|^/||;
9522: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9523: my $token=$1;
9524: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9525: if ($udom && $uname && $file) {
9526: $file=~s|(\?\.*)*$||;
9527: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9528: my $homeserver = &homeserver($uname,$udom);
9529: my $protocol = $protocol{$homeserver};
9530: $protocol = 'http' if ($protocol ne 'https');
9531: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9532: (($uri=~/\?/)?'&':'?').'token='.$token.
9533: '&tokenissued='.$perlvar{'lonHostID'};
9534: } else {
9535: return '/adm/notfound.html';
9536: }
9537: }
9538:
9539: # call with reqtype HEAD: get last modification time
9540: # call with reqtype GET: get the file contents
9541: # Do not call this with reqtype GET for large files! It loads everything into memory
9542: #
9543: sub getuploaded {
9544: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9545: $uri=~s/^\///;
9546: my $homeserver = &homeserver($cnum,$cdom);
9547: my $protocol = $protocol{$homeserver};
9548: $protocol = 'http' if ($protocol ne 'https');
9549: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9550: my $ua=new LWP::UserAgent;
9551: my $request=new HTTP::Request($reqtype,$uri);
9552: my $response=$ua->request($request);
9553: $$rtncode = $response->code;
9554: if (! $response->is_success()) {
9555: return 'failed';
9556: }
9557: if ($reqtype eq 'HEAD') {
9558: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9559: } elsif ($reqtype eq 'GET') {
9560: $$info = $response->content;
9561: }
9562: return 'ok';
9563: }
9564:
9565: sub readfile {
9566: my $file = shift;
9567: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9568: my $fh;
9569: open($fh,"<$file");
9570: my $a='';
9571: while (my $line = <$fh>) { $a .= $line; }
9572: return $a;
9573: }
9574:
9575: sub filelocation {
9576: my ($dir,$file) = @_;
9577: my $location;
9578: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9579:
9580: if ($file =~ m-^/adm/-) {
9581: $file=~s-^/adm/wrapper/-/-;
9582: $file=~s-^/adm/coursedocs/showdoc/-/-;
9583: }
9584:
9585: if ($file=~m:^/~:) { # is a contruction space reference
9586: $location = $file;
9587: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9588: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9589: # is a correct contruction space reference
9590: $location = $file;
9591: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9592: $location = $file;
9593: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9594: my ($udom,$uname,$filename)=
9595: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9596: my $home=&homeserver($uname,$udom);
9597: my $is_me=0;
9598: my @ids=¤t_machine_ids();
9599: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9600: if ($is_me) {
9601: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9602: } else {
9603: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9604: $udom.'/'.$uname.'/'.$filename;
9605: }
9606: } elsif ($file =~ m-^/adm/-) {
9607: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9608: } else {
9609: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9610: $file=~s:^/res/:/:;
9611: if ( !( $file =~ m:^/:) ) {
9612: $location = $dir. '/'.$file;
9613: } else {
9614: $location = '/home/httpd/html/res'.$file;
9615: }
9616: }
9617: $location=~s://+:/:g; # remove duplicate /
9618: while ($location=~m{/\.\./}) {
9619: if ($location =~ m{/[^/]+/\.\./}) {
9620: $location=~ s{/[^/]+/\.\./}{/}g;
9621: } else {
9622: $location=~ s{/\.\./}{/}g;
9623: }
9624: } #remove dir/..
9625: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9626: return $location;
9627: }
9628:
9629: sub hreflocation {
9630: my ($dir,$file)=@_;
9631: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9632: $file=filelocation($dir,$file);
9633: } elsif ($file=~m-^/adm/-) {
9634: $file=~s-^/adm/wrapper/-/-;
9635: $file=~s-^/adm/coursedocs/showdoc/-/-;
9636: }
9637: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9638: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9639: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9640: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9641: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9642: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9643: -/uploaded/$1/$2/-x;
9644: }
9645: if ($file=~ m{^/userfiles/}) {
9646: $file =~ s{^/userfiles/}{/uploaded/};
9647: }
9648: return $file;
9649: }
9650:
9651: sub current_machine_domains {
9652: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9653: }
9654:
9655: sub machine_domains {
9656: my ($hostname) = @_;
9657: my @domains;
9658: my %hostname = &all_hostnames();
9659: while( my($id, $name) = each(%hostname)) {
9660: # &logthis("-$id-$name-$hostname-");
9661: if ($hostname eq $name) {
9662: push(@domains,&host_domain($id));
9663: }
9664: }
9665: return @domains;
9666: }
9667:
9668: sub current_machine_ids {
9669: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9670: }
9671:
9672: sub machine_ids {
9673: my ($hostname) = @_;
9674: $hostname ||= &hostname($perlvar{'lonHostID'});
9675: my @ids;
9676: my %name_to_host = &all_names();
9677: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9678: return @{ $name_to_host{$hostname} };
9679: }
9680: return;
9681: }
9682:
9683: sub additional_machine_domains {
9684: my @domains;
9685: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9686: while( my $line = <$fh>) {
9687: $line =~ s/\s//g;
9688: push(@domains,$line);
9689: }
9690: return @domains;
9691: }
9692:
9693: sub default_login_domain {
9694: my $domain = $perlvar{'lonDefDomain'};
9695: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9696: foreach my $posdom (¤t_machine_domains(),
9697: &additional_machine_domains()) {
9698: if (lc($posdom) eq lc($testdomain)) {
9699: $domain=$posdom;
9700: last;
9701: }
9702: }
9703: return $domain;
9704: }
9705:
9706: # ------------------------------------------------------------- Declutters URLs
9707:
9708: sub declutter {
9709: my $thisfn=shift;
9710: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9711: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9712: $thisfn=~s/^\///;
9713: $thisfn=~s|^adm/wrapper/||;
9714: $thisfn=~s|^adm/coursedocs/showdoc/||;
9715: $thisfn=~s/^res\///;
9716: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9717: $thisfn=~s/\?.+$//;
9718: }
9719: return $thisfn;
9720: }
9721:
9722: # ------------------------------------------------------------- Clutter up URLs
9723:
9724: sub clutter {
9725: my $thisfn='/'.&declutter(shift);
9726: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9727: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9728: $thisfn='/res'.$thisfn;
9729: }
9730: if ($thisfn !~m|^/adm|) {
9731: if ($thisfn =~ m|^/ext/|) {
9732: $thisfn='/adm/wrapper'.$thisfn;
9733: } else {
9734: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9735: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9736: if ($embstyle eq 'ssi'
9737: || ($embstyle eq 'hdn')
9738: || ($embstyle eq 'rat')
9739: || ($embstyle eq 'prv')
9740: || ($embstyle eq 'ign')) {
9741: #do nothing with these
9742: } elsif (($embstyle eq 'img')
9743: || ($embstyle eq 'emb')
9744: || ($embstyle eq 'wrp')) {
9745: $thisfn='/adm/wrapper'.$thisfn;
9746: } elsif ($embstyle eq 'unk'
9747: && $thisfn!~/\.(sequence|page)$/) {
9748: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9749: } else {
9750: # &logthis("Got a blank emb style");
9751: }
9752: }
9753: }
9754: return $thisfn;
9755: }
9756:
9757: sub clutter_with_no_wrapper {
9758: my $uri = &clutter(shift);
9759: if ($uri =~ m-^/adm/-) {
9760: $uri =~ s-^/adm/wrapper/-/-;
9761: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9762: }
9763: return $uri;
9764: }
9765:
9766: sub freeze_escape {
9767: my ($value)=@_;
9768: if (ref($value)) {
9769: $value=&nfreeze($value);
9770: return '__FROZEN__'.&escape($value);
9771: }
9772: return &escape($value);
9773: }
9774:
9775:
9776: sub thaw_unescape {
9777: my ($value)=@_;
9778: if ($value =~ /^__FROZEN__/) {
9779: substr($value,0,10,undef);
9780: $value=&unescape($value);
9781: return &thaw($value);
9782: }
9783: return &unescape($value);
9784: }
9785:
9786: sub correct_line_ends {
9787: my ($result)=@_;
9788: $$result =~s/\r\n/\n/mg;
9789: $$result =~s/\r/\n/mg;
9790: }
9791: # ================================================================ Main Program
9792:
9793: sub goodbye {
9794: &logthis("Starting Shut down");
9795: #not converted to using infrastruture and probably shouldn't be
9796: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9797: #converted
9798: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9799: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9800: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9801: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9802: #1.1 only
9803: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9804: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9805: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9806: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9807: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9808: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9809: &logthis(sprintf("%-20s is %s",'hits',$hits));
9810: &flushcourselogs();
9811: &logthis("Shutting down");
9812: }
9813:
9814: sub get_dns {
9815: my ($url,$func,$ignore_cache) = @_;
9816: if (!$ignore_cache) {
9817: my ($content,$cached)=
9818: &Apache::lonnet::is_cached_new('dns',$url);
9819: if ($cached) {
9820: &$func($content);
9821: return;
9822: }
9823: }
9824:
9825: my %alldns;
9826: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9827: foreach my $dns (<$config>) {
9828: next if ($dns !~ /^\^(\S*)/x);
9829: my $line = $1;
9830: my ($host,$protocol) = split(/:/,$line);
9831: if ($protocol ne 'https') {
9832: $protocol = 'http';
9833: }
9834: $alldns{$host} = $protocol;
9835: }
9836: while (%alldns) {
9837: my ($dns) = keys(%alldns);
9838: my $ua=new LWP::UserAgent;
9839: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9840: my $response=$ua->request($request);
9841: delete($alldns{$dns});
9842: next if ($response->is_error());
9843: my @content = split("\n",$response->content);
9844: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9845: &$func(\@content);
9846: return;
9847: }
9848: close($config);
9849: my $which = (split('/',$url))[3];
9850: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9851: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9852: my @content = <$config>;
9853: &$func(\@content);
9854: return;
9855: }
9856: # ------------------------------------------------------------ Read domain file
9857: {
9858: my $loaded;
9859: my %domain;
9860:
9861: sub parse_domain_tab {
9862: my ($lines) = @_;
9863: foreach my $line (@$lines) {
9864: next if ($line =~ /^(\#|\s*$ )/x);
9865:
9866: chomp($line);
9867: my ($name,@elements) = split(/:/,$line,9);
9868: my %this_domain;
9869: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9870: 'lang_def', 'city', 'longi', 'lati',
9871: 'primary') {
9872: $this_domain{$field} = shift(@elements);
9873: }
9874: $domain{$name} = \%this_domain;
9875: }
9876: }
9877:
9878: sub reset_domain_info {
9879: undef($loaded);
9880: undef(%domain);
9881: }
9882:
9883: sub load_domain_tab {
9884: my ($ignore_cache) = @_;
9885: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9886: my $fh;
9887: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9888: my @lines = <$fh>;
9889: &parse_domain_tab(\@lines);
9890: }
9891: close($fh);
9892: $loaded = 1;
9893: }
9894:
9895: sub domain {
9896: &load_domain_tab() if (!$loaded);
9897:
9898: my ($name,$what) = @_;
9899: return if ( !exists($domain{$name}) );
9900:
9901: if (!$what) {
9902: return $domain{$name}{'description'};
9903: }
9904: return $domain{$name}{$what};
9905: }
9906:
9907: sub domain_info {
9908: &load_domain_tab() if (!$loaded);
9909: return %domain;
9910: }
9911:
9912: }
9913:
9914:
9915: # ------------------------------------------------------------- Read hosts file
9916: {
9917: my %hostname;
9918: my %hostdom;
9919: my %libserv;
9920: my $loaded;
9921: my %name_to_host;
9922: my %internetdom;
9923:
9924: sub parse_hosts_tab {
9925: my ($file) = @_;
9926: foreach my $configline (@$file) {
9927: next if ($configline =~ /^(\#|\s*$ )/x);
9928: next if ($configline =~ /^\^/);
9929: chomp($configline);
9930: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
9931: $name=~s/\s//g;
9932: if ($id && $domain && $role && $name) {
9933: $hostname{$id}=$name;
9934: push(@{$name_to_host{$name}}, $id);
9935: $hostdom{$id}=$domain;
9936: if ($role eq 'library') { $libserv{$id}=$name; }
9937: if (defined($protocol)) {
9938: if ($protocol eq 'https') {
9939: $protocol{$id} = $protocol;
9940: } else {
9941: $protocol{$id} = 'http';
9942: }
9943: } else {
9944: $protocol{$id} = 'http';
9945: }
9946: if (defined($intdom)) {
9947: $internetdom{$id} = $intdom;
9948: }
9949: }
9950: }
9951: }
9952:
9953: sub reset_hosts_info {
9954: &purge_remembered();
9955: &reset_domain_info();
9956: &reset_hosts_ip_info();
9957: undef(%name_to_host);
9958: undef(%hostname);
9959: undef(%hostdom);
9960: undef(%libserv);
9961: undef($loaded);
9962: }
9963:
9964: sub load_hosts_tab {
9965: my ($ignore_cache) = @_;
9966: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9967: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9968: my @config = <$config>;
9969: &parse_hosts_tab(\@config);
9970: close($config);
9971: $loaded=1;
9972: }
9973:
9974: sub hostname {
9975: &load_hosts_tab() if (!$loaded);
9976:
9977: my ($lonid) = @_;
9978: return $hostname{$lonid};
9979: }
9980:
9981: sub all_hostnames {
9982: &load_hosts_tab() if (!$loaded);
9983:
9984: return %hostname;
9985: }
9986:
9987: sub all_names {
9988: &load_hosts_tab() if (!$loaded);
9989:
9990: return %name_to_host;
9991: }
9992:
9993: sub all_host_domain {
9994: &load_hosts_tab() if (!$loaded);
9995: return %hostdom;
9996: }
9997:
9998: sub is_library {
9999: &load_hosts_tab() if (!$loaded);
10000:
10001: return exists($libserv{$_[0]});
10002: }
10003:
10004: sub all_library {
10005: &load_hosts_tab() if (!$loaded);
10006:
10007: return %libserv;
10008: }
10009:
10010: sub unique_library {
10011: #2x reverse removes all hostnames that appear more than once
10012: my %unique = reverse &all_library();
10013: return reverse %unique;
10014: }
10015:
10016: sub get_servers {
10017: &load_hosts_tab() if (!$loaded);
10018:
10019: my ($domain,$type) = @_;
10020: my %possible_hosts = ($type eq 'library') ? %libserv
10021: : %hostname;
10022: my %result;
10023: if (ref($domain) eq 'ARRAY') {
10024: while ( my ($host,$hostname) = each(%possible_hosts)) {
10025: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10026: $result{$host} = $hostname;
10027: }
10028: }
10029: } else {
10030: while ( my ($host,$hostname) = each(%possible_hosts)) {
10031: if ($hostdom{$host} eq $domain) {
10032: $result{$host} = $hostname;
10033: }
10034: }
10035: }
10036: return %result;
10037: }
10038:
10039: sub get_unique_servers {
10040: my %unique = reverse &get_servers(@_);
10041: return reverse %unique;
10042: }
10043:
10044: sub host_domain {
10045: &load_hosts_tab() if (!$loaded);
10046:
10047: my ($lonid) = @_;
10048: return $hostdom{$lonid};
10049: }
10050:
10051: sub all_domains {
10052: &load_hosts_tab() if (!$loaded);
10053:
10054: my %seen;
10055: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10056: return @uniq;
10057: }
10058:
10059: sub internet_dom {
10060: &load_hosts_tab() if (!$loaded);
10061:
10062: my ($lonid) = @_;
10063: return $internetdom{$lonid};
10064: }
10065: }
10066:
10067: {
10068: my %iphost;
10069: my %name_to_ip;
10070: my %lonid_to_ip;
10071:
10072: sub get_hosts_from_ip {
10073: my ($ip) = @_;
10074: my %iphosts = &get_iphost();
10075: if (ref($iphosts{$ip})) {
10076: return @{$iphosts{$ip}};
10077: }
10078: return;
10079: }
10080:
10081: sub reset_hosts_ip_info {
10082: undef(%iphost);
10083: undef(%name_to_ip);
10084: undef(%lonid_to_ip);
10085: }
10086:
10087: sub get_host_ip {
10088: my ($lonid) = @_;
10089: if (exists($lonid_to_ip{$lonid})) {
10090: return $lonid_to_ip{$lonid};
10091: }
10092: my $name=&hostname($lonid);
10093: my $ip = gethostbyname($name);
10094: return if (!$ip || length($ip) ne 4);
10095: $ip=inet_ntoa($ip);
10096: $name_to_ip{$name} = $ip;
10097: $lonid_to_ip{$lonid} = $ip;
10098: return $ip;
10099: }
10100:
10101: sub get_iphost {
10102: my ($ignore_cache) = @_;
10103:
10104: if (!$ignore_cache) {
10105: if (%iphost) {
10106: return %iphost;
10107: }
10108: my ($ip_info,$cached)=
10109: &Apache::lonnet::is_cached_new('iphost','iphost');
10110: if ($cached) {
10111: %iphost = %{$ip_info->[0]};
10112: %name_to_ip = %{$ip_info->[1]};
10113: %lonid_to_ip = %{$ip_info->[2]};
10114: return %iphost;
10115: }
10116: }
10117:
10118: # get yesterday's info for fallback
10119: my %old_name_to_ip;
10120: my ($ip_info,$cached)=
10121: &Apache::lonnet::is_cached_new('iphost','iphost');
10122: if ($cached) {
10123: %old_name_to_ip = %{$ip_info->[1]};
10124: }
10125:
10126: my %name_to_host = &all_names();
10127: foreach my $name (keys(%name_to_host)) {
10128: my $ip;
10129: if (!exists($name_to_ip{$name})) {
10130: $ip = gethostbyname($name);
10131: if (!$ip || length($ip) ne 4) {
10132: if (defined($old_name_to_ip{$name})) {
10133: $ip = $old_name_to_ip{$name};
10134: &logthis("Can't find $name defaulting to old $ip");
10135: } else {
10136: &logthis("Name $name no IP found");
10137: next;
10138: }
10139: } else {
10140: $ip=inet_ntoa($ip);
10141: }
10142: $name_to_ip{$name} = $ip;
10143: } else {
10144: $ip = $name_to_ip{$name};
10145: }
10146: foreach my $id (@{ $name_to_host{$name} }) {
10147: $lonid_to_ip{$id} = $ip;
10148: }
10149: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10150: }
10151: &Apache::lonnet::do_cache_new('iphost','iphost',
10152: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10153: 48*60*60);
10154:
10155: return %iphost;
10156: }
10157:
10158: #
10159: # Given a DNS returns the loncapa host name for that DNS
10160: #
10161: sub host_from_dns {
10162: my ($dns) = @_;
10163: my @hosts;
10164: my $ip;
10165:
10166: if (exists($name_to_ip{$dns})) {
10167: $ip = $name_to_ip{$dns};
10168: }
10169: if (!$ip) {
10170: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10171: if (length($ip) == 4) {
10172: $ip = &IO::Socket::inet_ntoa($ip);
10173: }
10174: }
10175: if ($ip) {
10176: @hosts = get_hosts_from_ip($ip);
10177: return $hosts[0];
10178: }
10179: return undef;
10180: }
10181:
10182: sub get_internet_names {
10183: my ($lonid) = @_;
10184: return if ($lonid eq '');
10185: my ($idnref,$cached)=
10186: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10187: if ($cached) {
10188: return $idnref;
10189: }
10190: my $ip = &get_host_ip($lonid);
10191: my @hosts = &get_hosts_from_ip($ip);
10192: my %iphost = &get_iphost();
10193: my (@idns,%seen);
10194: foreach my $id (@hosts) {
10195: my $dom = &host_domain($id);
10196: my $prim_id = &domain($dom,'primary');
10197: my $prim_ip = &get_host_ip($prim_id);
10198: next if ($seen{$prim_ip});
10199: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10200: foreach my $id (@{$iphost{$prim_ip}}) {
10201: my $intdom = &internet_dom($id);
10202: unless (grep(/^\Q$intdom\E$/,@idns)) {
10203: push(@idns,$intdom);
10204: }
10205: }
10206: }
10207: $seen{$prim_ip} = 1;
10208: }
10209: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10210: }
10211:
10212: }
10213:
10214: sub all_loncaparevs {
10215: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10216: }
10217:
10218: BEGIN {
10219:
10220: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10221: unless ($readit) {
10222: {
10223: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10224: %perlvar = (%perlvar,%{$configvars});
10225: }
10226:
10227:
10228: # ------------------------------------------------------ Read spare server file
10229: {
10230: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10231:
10232: while (my $configline=<$config>) {
10233: chomp($configline);
10234: if ($configline) {
10235: my ($host,$type) = split(':',$configline,2);
10236: if (!defined($type) || $type eq '') { $type = 'default' };
10237: push(@{ $spareid{$type} }, $host);
10238: }
10239: }
10240: close($config);
10241: }
10242: # ------------------------------------------------------------ Read permissions
10243: {
10244: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10245:
10246: while (my $configline=<$config>) {
10247: chomp($configline);
10248: if ($configline) {
10249: my ($role,$perm)=split(/ /,$configline);
10250: if ($perm ne '') { $pr{$role}=$perm; }
10251: }
10252: }
10253: close($config);
10254: }
10255:
10256: # -------------------------------------------- Read plain texts for permissions
10257: {
10258: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10259:
10260: while (my $configline=<$config>) {
10261: chomp($configline);
10262: if ($configline) {
10263: my ($short,@plain)=split(/:/,$configline);
10264: %{$prp{$short}} = ();
10265: if (@plain > 0) {
10266: $prp{$short}{'std'} = $plain[0];
10267: for (my $i=1; $i<@plain; $i++) {
10268: $prp{$short}{'alt'.$i} = $plain[$i];
10269: }
10270: }
10271: }
10272: }
10273: close($config);
10274: }
10275:
10276: # ---------------------------------------------------------- Read package table
10277: {
10278: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10279:
10280: while (my $configline=<$config>) {
10281: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10282: chomp($configline);
10283: my ($short,$plain)=split(/:/,$configline);
10284: my ($pack,$name)=split(/\&/,$short);
10285: if ($plain ne '') {
10286: $packagetab{$pack.'&'.$name.'&name'}=$name;
10287: $packagetab{$short}=$plain;
10288: }
10289: }
10290: close($config);
10291: }
10292:
10293: # ---------------------------------------------------------- Read loncaparev table
10294: {
10295: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10296: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10297: while (my $configline=<$config>) {
10298: chomp($configline);
10299: my ($hostid,$loncaparev)=split(/:/,$configline);
10300: $loncaparevs{$hostid}=$loncaparev;
10301: }
10302: close($config);
10303: }
10304: }
10305: }
10306:
10307: # ---------------------------------------------------------- Read serverhostID table
10308: {
10309: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10310: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10311: while (my $configline=<$config>) {
10312: chomp($configline);
10313: my ($name,$id)=split(/:/,$configline);
10314: $serverhomeIDs{$name}=$id;
10315: }
10316: close($config);
10317: }
10318: }
10319: }
10320:
10321: {
10322: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10323: if (-e $file) {
10324: my $parser = HTML::LCParser->new($file);
10325: while (my $token = $parser->get_token()) {
10326: if ($token->[0] eq 'S') {
10327: my $item = $token->[1];
10328: my $name = $token->[2]{'name'};
10329: my $value = $token->[2]{'value'};
10330: if ($item ne '' && $name ne '' && $value ne '') {
10331: my $release = $parser->get_text();
10332: $release =~ s/(^\s*|\s*$ )//gx;
10333: $needsrelease{$item.':'.$name.':'.$value} = $release;
10334: }
10335: }
10336: }
10337: }
10338: }
10339:
10340: # ------------- set up temporary directory
10341: {
10342: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10343:
10344: }
10345:
10346: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10347: 'compress_threshold'=> 20_000,
10348: });
10349:
10350: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10351: $dumpcount=0;
10352: $locknum=0;
10353:
10354: &logtouch();
10355: &logthis('<font color="yellow">INFO: Read configuration</font>');
10356: $readit=1;
10357: {
10358: use integer;
10359: my $test=(2**32)+1;
10360: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10361: &logthis(" Detected 64bit platform ($_64bit)");
10362: }
10363: }
10364: }
10365:
10366: 1;
10367: __END__
10368:
10369: =pod
10370:
10371: =head1 NAME
10372:
10373: Apache::lonnet - Subroutines to ask questions about things in the network.
10374:
10375: =head1 SYNOPSIS
10376:
10377: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10378:
10379: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10380:
10381: Common parameters:
10382:
10383: =over 4
10384:
10385: =item *
10386:
10387: $uname : an internal username (if $cname expecting a course Id specifically)
10388:
10389: =item *
10390:
10391: $udom : a domain (if $cdom expecting a course's domain specifically)
10392:
10393: =item *
10394:
10395: $symb : a resource instance identifier
10396:
10397: =item *
10398:
10399: $namespace : the name of a .db file that contains the data needed or
10400: being set.
10401:
10402: =back
10403:
10404: =head1 OVERVIEW
10405:
10406: lonnet provides subroutines which interact with the
10407: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10408: about classes, users, and resources.
10409:
10410: For many of these objects you can also use this to store data about
10411: them or modify them in various ways.
10412:
10413: =head2 Symbs
10414:
10415: To identify a specific instance of a resource, LON-CAPA uses symbols
10416: or "symbs"X<symb>. These identifiers are built from the URL of the
10417: map, the resource number of the resource in the map, and the URL of
10418: the resource itself. The latter is somewhat redundant, but might help
10419: if maps change.
10420:
10421: An example is
10422:
10423: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10424:
10425: The respective map entry is
10426:
10427: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10428: title="Problem 2">
10429: </resource>
10430:
10431: Symbs are used by the random number generator, as well as to store and
10432: restore data specific to a certain instance of for example a problem.
10433:
10434: =head2 Storing And Retrieving Data
10435:
10436: X<store()>X<cstore()>X<restore()>Three of the most important functions
10437: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10438: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10439: is is the non-critical message twin of cstore. These functions are for
10440: handlers to store a perl hash to a user's permanent data space in an
10441: easy manner, and to retrieve it again on another call. It is expected
10442: that a handler would use this once at the beginning to retrieve data,
10443: and then again once at the end to send only the new data back.
10444:
10445: The data is stored in the user's data directory on the user's
10446: homeserver under the ID of the course.
10447:
10448: The hash that is returned by restore will have all of the previous
10449: value for all of the elements of the hash.
10450:
10451: Example:
10452:
10453: #creating a hash
10454: my %hash;
10455: $hash{'foo'}='bar';
10456:
10457: #storing it
10458: &Apache::lonnet::cstore(\%hash);
10459:
10460: #changing a value
10461: $hash{'foo'}='notbar';
10462:
10463: #adding a new value
10464: $hash{'bar'}='foo';
10465: &Apache::lonnet::cstore(\%hash);
10466:
10467: #retrieving the hash
10468: my %history=&Apache::lonnet::restore();
10469:
10470: #print the hash
10471: foreach my $key (sort(keys(%history))) {
10472: print("\%history{$key} = $history{$key}");
10473: }
10474:
10475: Will print out:
10476:
10477: %history{1:foo} = bar
10478: %history{1:keys} = foo:timestamp
10479: %history{1:timestamp} = 990455579
10480: %history{2:bar} = foo
10481: %history{2:foo} = notbar
10482: %history{2:keys} = foo:bar:timestamp
10483: %history{2:timestamp} = 990455580
10484: %history{bar} = foo
10485: %history{foo} = notbar
10486: %history{timestamp} = 990455580
10487: %history{version} = 2
10488:
10489: Note that the special hash entries C<keys>, C<version> and
10490: C<timestamp> were added to the hash. C<version> will be equal to the
10491: total number of versions of the data that have been stored. The
10492: C<timestamp> attribute will be the UNIX time the hash was
10493: stored. C<keys> is available in every historical section to list which
10494: keys were added or changed at a specific historical revision of a
10495: hash.
10496:
10497: B<Warning>: do not store the hash that restore returns directly. This
10498: will cause a mess since it will restore the historical keys as if the
10499: were new keys. I.E. 1:foo will become 1:1:foo etc.
10500:
10501: Calling convention:
10502:
10503: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10504: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10505:
10506: For more detailed information, see lonnet specific documentation.
10507:
10508: =head1 RETURN MESSAGES
10509:
10510: =over 4
10511:
10512: =item * B<con_lost>: unable to contact remote host
10513:
10514: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10515: when the connection is brought back up
10516:
10517: =item * B<con_failed>: unable to contact remote host and unable to save message
10518: for later delivery
10519:
10520: =item * B<error:>: an error a occurred, a description of the error follows the :
10521:
10522: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10523: that was requested
10524:
10525: =back
10526:
10527: =head1 PUBLIC SUBROUTINES
10528:
10529: =head2 Session Environment Functions
10530:
10531: =over 4
10532:
10533: =item *
10534: X<appenv()>
10535: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10536: the user envirnoment file, and will be restored for each access this
10537: user makes during this session, also modifies the %env for the current
10538: process. Optional rolesarrayref - if defined contains a reference to an array
10539: of roles which are exempt from the restriction on modifying user.role entries
10540: in the user's environment.db and in %env.
10541:
10542: =item *
10543: X<delenv()>
10544: B<delenv($delthis,$regexp)>: removes all items from the session
10545: environment file that begin with $delthis. If the
10546: optional second arg - $regexp - is true, $delthis is treated as a
10547: regular expression, otherwise \Q$delthis\E is used.
10548: The values are also deleted from the current processes %env.
10549:
10550: =item * get_env_multiple($name)
10551:
10552: gets $name from the %env hash, it seemlessly handles the cases where multiple
10553: values may be defined and end up as an array ref.
10554:
10555: returns an array of values
10556:
10557: =back
10558:
10559: =head2 User Information
10560:
10561: =over 4
10562:
10563: =item *
10564: X<queryauthenticate()>
10565: B<queryauthenticate($uname,$udom)>: try to determine user's current
10566: authentication scheme
10567:
10568: =item *
10569: X<authenticate()>
10570: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10571: authenticate user from domain's lib servers (first use the current
10572: one). C<$upass> should be the users password.
10573: $checkdefauth is optional (value is 1 if a check should be made to
10574: authenticate user using default authentication method, and allow
10575: account creation if username does not have account in the domain).
10576: $clientcancheckhost is optional (value is 1 if checking whether the
10577: server can host will occur on the client side in lonauth.pm).
10578:
10579: =item *
10580: X<homeserver()>
10581: B<homeserver($uname,$udom)>: find the server which has
10582: the user's directory and files (there must be only one), this caches
10583: the answer, and also caches if there is a borken connection.
10584:
10585: =item *
10586: X<idget()>
10587: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10588: (IDs are a unique resource in a domain, there must be only 1 ID per
10589: username, and only 1 username per ID in a specific domain) (returns
10590: hash: id=>name,id=>name)
10591:
10592: =item *
10593: X<idrget()>
10594: B<idrget($udom,@unames)>: find the IDs behind a list of
10595: usernames (returns hash: name=>id,name=>id)
10596:
10597: =item *
10598: X<idput()>
10599: B<idput($udom,%ids)>: store away a list of names and associated IDs
10600:
10601: =item *
10602: X<rolesinit()>
10603: B<rolesinit($udom,$username,$authhost)>: get user privileges
10604:
10605: =item *
10606: X<getsection()>
10607: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10608: course $cname, return section name/number or '' for "not in course"
10609: and '-1' for "no section"
10610:
10611: =item *
10612: X<userenvironment()>
10613: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10614: passed in @what from the requested user's environment, returns a hash
10615:
10616: =item *
10617: X<userlog_query()>
10618: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10619: activity.log file. %filters defines filters applied when parsing the
10620: log file. These can be start or end timestamps, or the type of action
10621: - log to look for Login or Logout events, check for Checkin or
10622: Checkout, role for role selection. The response is in the form
10623: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10624: escaped strings of the action recorded in the activity.log file.
10625:
10626: =back
10627:
10628: =head2 User Roles
10629:
10630: =over 4
10631:
10632: =item *
10633:
10634: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10635: F: full access
10636: U,I,K: authentication modes (cxx only)
10637: '': forbidden
10638: 1: user needs to choose course
10639: 2: browse allowed
10640: A: passphrase authentication needed
10641:
10642: =item *
10643:
10644: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10645: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10646: and course level
10647:
10648: =item *
10649:
10650: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10651: (rolesplain.tab); plain text explanation of a user role term.
10652: $type is Course (default) or Community.
10653: If $forcedefault evaluates to true, text returned will be default
10654: text for $type. Otherwise, if this is a course, the text returned
10655: will be a custom name for the role (if defined in the course's
10656: environment). If no custom name is defined the default is returned.
10657:
10658: =item *
10659:
10660: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10661: All arguments are optional. Returns a hash of a roles, either for
10662: co-author/assistant author roles for a user's Construction Space
10663: (default), or if $context is 'userroles', roles for the user himself,
10664: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10665: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10666: For each key, value is set to colon-separated start and end times for
10667: the role. If no username and domain are specified, will default to
10668: current user/domain. Types, roles, and roledoms are references to arrays
10669: of role statuses (active, future or previous), roles
10670: (e.g., cc,in, st etc.) and domains of the roles which can be used
10671: to restrict the list of roles reported. If no array ref is
10672: provided for types, will default to return only active roles.
10673:
10674: =back
10675:
10676: =head2 User Modification
10677:
10678: =over 4
10679:
10680: =item *
10681:
10682: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10683: user for the level given by URL. Optional start and end dates (leave empty
10684: string or zero for "no date")
10685:
10686: =item *
10687:
10688: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10689: change a users, password, possible return values are: ok,
10690: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10691: refused
10692:
10693: =item *
10694:
10695: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10696:
10697: =item *
10698:
10699: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10700: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10701:
10702: will update user information (firstname,middlename,lastname,generation,
10703: permanentemail), and if forceid is true, student/employee ID also.
10704: A user's institutional affiliation(s) can also be updated.
10705: User information fields will not be overwritten with empty entries
10706: unless the field is included in the $candelete array reference.
10707: This array is included when a single user is modified via "Manage Users",
10708: or when Autoupdate.pl is run by cron in a domain.
10709:
10710: =item *
10711:
10712: modifystudent
10713:
10714: modify a student's enrollment and identification information.
10715: The course id is resolved based on the current users environment.
10716: This means the envoking user must be a course coordinator or otherwise
10717: associated with a course.
10718:
10719: This call is essentially a wrapper for lonnet::modifyuser and
10720: lonnet::modify_student_enrollment
10721:
10722: Inputs:
10723:
10724: =over 4
10725:
10726: =item B<$udom> Student's loncapa domain
10727:
10728: =item B<$uname> Student's loncapa login name
10729:
10730: =item B<$uid> Student/Employee ID
10731:
10732: =item B<$umode> Student's authentication mode
10733:
10734: =item B<$upass> Student's password
10735:
10736: =item B<$first> Student's first name
10737:
10738: =item B<$middle> Student's middle name
10739:
10740: =item B<$last> Student's last name
10741:
10742: =item B<$gene> Student's generation
10743:
10744: =item B<$usec> Student's section in course
10745:
10746: =item B<$end> Unix time of the roles expiration
10747:
10748: =item B<$start> Unix time of the roles start date
10749:
10750: =item B<$forceid> If defined, allow $uid to be changed
10751:
10752: =item B<$desiredhome> server to use as home server for student
10753:
10754: =item B<$email> Student's permanent e-mail address
10755:
10756: =item B<$type> Type of enrollment (auto or manual)
10757:
10758: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10759:
10760: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10761:
10762: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10763:
10764: =item B<$context> role change context (shown in User Management Logs display in a course)
10765:
10766: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10767:
10768: =back
10769:
10770: =item *
10771:
10772: modify_student_enrollment
10773:
10774: Change a students enrollment status in a class. The environment variable
10775: 'role.request.course' must be defined for this function to proceed.
10776:
10777: Inputs:
10778:
10779: =over 4
10780:
10781: =item $udom, students domain
10782:
10783: =item $uname, students name
10784:
10785: =item $uid, students user id
10786:
10787: =item $first, students first name
10788:
10789: =item $middle
10790:
10791: =item $last
10792:
10793: =item $gene
10794:
10795: =item $usec
10796:
10797: =item $end
10798:
10799: =item $start
10800:
10801: =item $type
10802:
10803: =item $locktype
10804:
10805: =item $cid
10806:
10807: =item $selfenroll
10808:
10809: =item $context
10810:
10811: =back
10812:
10813:
10814: =item *
10815:
10816: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10817: custom role; give a custom role to a user for the level given by URL. Specify
10818: name and domain of role author, and role name
10819:
10820: =item *
10821:
10822: revokerole($udom,$uname,$url,$role) : revoke a role for url
10823:
10824: =item *
10825:
10826: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10827:
10828: =back
10829:
10830: =head2 Course Infomation
10831:
10832: =over 4
10833:
10834: =item *
10835:
10836: coursedescription($courseid) : returns a hash of information about the
10837: specified course id, including all environment settings for the
10838: course, the description of the course will be in the hash under the
10839: key 'description'
10840:
10841: =item *
10842:
10843: resdata($name,$domain,$type,@which) : request for current parameter
10844: setting for a specific $type, where $type is either 'course' or 'user',
10845: @what should be a list of parameters to ask about. This routine caches
10846: answers for 5 minutes.
10847:
10848: =item *
10849:
10850: get_courseresdata($courseid, $domain) : dump the entire course resource
10851: data base, returning a hash that is keyed by the resource name and has
10852: values that are the resource value. I believe that the timestamps and
10853: versions are also returned.
10854:
10855:
10856: =back
10857:
10858: =head2 Course Modification
10859:
10860: =over 4
10861:
10862: =item *
10863:
10864: writecoursepref($courseid,%prefs) : write preferences (environment
10865: database) for a course
10866:
10867: =item *
10868:
10869: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
10870:
10871: =item *
10872:
10873: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
10874:
10875: =back
10876:
10877: =head2 Resource Subroutines
10878:
10879: =over 4
10880:
10881: =item *
10882:
10883: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
10884:
10885: =item *
10886:
10887: repcopy($filename) : subscribes to the requested file, and attempts to
10888: replicate from the owning library server, Might return
10889: 'unavailable', 'not_found', 'forbidden', 'ok', or
10890: 'bad_request', also attempts to grab the metadata for the
10891: resource. Expects the local filesystem pathname
10892: (/home/httpd/html/res/....)
10893:
10894: =back
10895:
10896: =head2 Resource Information
10897:
10898: =over 4
10899:
10900: =item *
10901:
10902: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
10903: a vairety of different possible values, $varname should be a request
10904: string, and the other parameters can be used to specify who and what
10905: one is asking about.
10906:
10907: Possible values for $varname are environment.lastname (or other item
10908: from the envirnment hash), user.name (or someother aspect about the
10909: user), resource.0.maxtries (or some other part and parameter of a
10910: resource)
10911:
10912: =item *
10913:
10914: directcondval($number) : get current value of a condition; reads from a state
10915: string
10916:
10917: =item *
10918:
10919: condval($condidx) : value of condition index based on state
10920:
10921: =item *
10922:
10923: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
10924: resource's metadata, $what should be either a specific key, or either
10925: 'keys' (to get a list of possible keys) or 'packages' to get a list of
10926: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
10927:
10928: this function automatically caches all requests
10929:
10930: =item *
10931:
10932: metadata_query($query,$custom,$customshow) : make a metadata query against the
10933: network of library servers; returns file handle of where SQL and regex results
10934: will be stored for query
10935:
10936: =item *
10937:
10938: symbread($filename) : return symbolic list entry (filename argument optional);
10939: returns the data handle
10940:
10941: =item *
10942:
10943: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
10944: a possible symb for the URL in $thisfn, and if is an encryypted
10945: resource that the user accessed using /enc/ returns a 1 on success, 0
10946: on failure, user must be in a course, as it assumes the existance of
10947: the course initial hash, and uses $env('request.course.id'}
10948:
10949:
10950: =item *
10951:
10952: symbclean($symb) : removes versions numbers from a symb, returns the
10953: cleaned symb
10954:
10955: =item *
10956:
10957: is_on_map($uri) : checks if the $uri is somewhere on the current
10958: course map, user must be in a course for it to work.
10959:
10960: =item *
10961:
10962: numval($salt) : return random seed value (addend for rndseed)
10963:
10964: =item *
10965:
10966: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
10967: a random seed, all arguments are optional, if they aren't sent it uses the
10968: environment to derive them. Note: if symb isn't sent and it can't get one
10969: from &symbread it will use the current time as its return value
10970:
10971: =item *
10972:
10973: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
10974: unfakeable, receipt
10975:
10976: =item *
10977:
10978: receipt() : API to ireceipt working off of env values; given out to users
10979:
10980: =item *
10981:
10982: countacc($url) : count the number of accesses to a given URL
10983:
10984: =item *
10985:
10986: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
10987:
10988: =item *
10989:
10990: checkin($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 $tcrsid)
10991:
10992: =item *
10993:
10994: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
10995:
10996: =item *
10997:
10998: devalidate($symb) : devalidate temporary spreadsheet calculations,
10999: forcing spreadsheet to reevaluate the resource scores next time.
11000:
11001: =back
11002:
11003: =head2 Storing/Retreiving Data
11004:
11005: =over 4
11006:
11007: =item *
11008:
11009: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11010: for this url; hashref needs to be given and should be a \%hashname; the
11011: remaining args aren't required and if they aren't passed or are '' they will
11012: be derived from the env
11013:
11014: =item *
11015:
11016: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11017: uses critical subroutine
11018:
11019: =item *
11020:
11021: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11022: all args are optional
11023:
11024: =item *
11025:
11026: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11027: dumps the complete (or key matching regexp) namespace into a hash
11028: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11029: normally &store()ed into
11030:
11031: $range should be either an integer '100' (give me the first 100
11032: matching records)
11033: or be two integers sperated by a - with no spaces
11034: '30-50' (give me the 30th through the 50th matching
11035: records)
11036:
11037:
11038: =item *
11039:
11040: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11041: replaces a &store() version of data with a replacement set of data
11042: for a particular resource in a namespace passed in the $storehash hash
11043: reference
11044:
11045: =item *
11046:
11047: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11048: works very similar to store/cstore, but all data is stored in a
11049: temporary location and can be reset using tmpreset, $storehash should
11050: be a hash reference, returns nothing on success
11051:
11052: =item *
11053:
11054: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11055: similar to restore, but all data is stored in a temporary location and
11056: can be reset using tmpreset. Returns a hash of values on success,
11057: error string otherwise.
11058:
11059: =item *
11060:
11061: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11062: deltes all keys for $symb form the temporary storage hash.
11063:
11064: =item *
11065:
11066: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11067: reference filled in from namesp ($udom and $uname are optional)
11068:
11069: =item *
11070:
11071: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11072: namesp ($udom and $uname are optional)
11073:
11074: =item *
11075:
11076: dump($namespace,$udom,$uname,$regexp,$range) :
11077: dumps the complete (or key matching regexp) namespace into a hash
11078: ($udom, $uname, $regexp, $range are optional)
11079:
11080: $range should be either an integer '100' (give me the first 100
11081: matching records)
11082: or be two integers sperated by a - with no spaces
11083: '30-50' (give me the 30th through the 50th matching
11084: records)
11085: =item *
11086:
11087: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11088: $store can be a scalar, an array reference, or if the amount to be
11089: incremented is > 1, a hash reference.
11090:
11091: ($udom and $uname are optional)
11092:
11093: =item *
11094:
11095: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11096: ($udom and $uname are optional)
11097:
11098: =item *
11099:
11100: cput($namespace,$storehash,$udom,$uname) : critical put
11101: ($udom and $uname are optional)
11102:
11103: =item *
11104:
11105: newput($namespace,$storehash,$udom,$uname) :
11106:
11107: Attempts to store the items in the $storehash, but only if they don't
11108: currently exist, if this succeeds you can be certain that you have
11109: successfully created a new key value pair in the $namespace db.
11110:
11111:
11112: Args:
11113: $namespace: name of database to store values to
11114: $storehash: hashref to store to the db
11115: $udom: (optional) domain of user containing the db
11116: $uname: (optional) name of user caontaining the db
11117:
11118: Returns:
11119: 'ok' -> succeeded in storing all keys of $storehash
11120: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11121: least <key> already existed in the db (other
11122: requested keys may also already exist)
11123: 'error: <msg>' -> unable to tie the DB or other error occurred
11124: 'con_lost' -> unable to contact request server
11125: 'refused' -> action was not allowed by remote machine
11126:
11127:
11128: =item *
11129:
11130: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11131: reference filled in from namesp (encrypts the return communication)
11132: ($udom and $uname are optional)
11133:
11134: =item *
11135:
11136: log($udom,$name,$home,$message) : write to permanent log for user; use
11137: critical subroutine
11138:
11139: =item *
11140:
11141: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11142: array reference filled in from namespace found in domain level on either
11143: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11144:
11145: =item *
11146:
11147: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11148: domain level either on specified domain server ($uhome) or primary domain
11149: server ($udom and $uhome are optional)
11150:
11151: =item *
11152:
11153: get_domain_defaults($target_domain) : returns hash with defaults for
11154: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11155: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11156: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11157: Values are retrieved from cache (if current), or from domain's configuration.db
11158: (if available), or lastly from values in lonTabs/dns_domain,tab,
11159: or lonTabs/domain.tab.
11160:
11161: %domdefaults = &get_auth_defaults($target_domain);
11162:
11163: =back
11164:
11165: =head2 Network Status Functions
11166:
11167: =over 4
11168:
11169: =item *
11170:
11171: dirlist($uri) : return directory list based on URI
11172:
11173: =item *
11174:
11175: spareserver() : find server with least workload from spare.tab
11176:
11177:
11178: =item *
11179:
11180: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11181: if there is no corresponding loncapa host.
11182:
11183: =back
11184:
11185:
11186: =head2 Apache Request
11187:
11188: =over 4
11189:
11190: =item *
11191:
11192: ssi($url,%hash) : server side include, does a complete request cycle on url to
11193: localhost, posts hash
11194:
11195: =back
11196:
11197: =head2 Data to String to Data
11198:
11199: =over 4
11200:
11201: =item *
11202:
11203: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11204: and '&' separators, supports elements that are arrayrefs and hashrefs
11205:
11206: =item *
11207:
11208: hashref2str($hashref) : convert a hashref into a string complete with
11209: escaping and '=' and '&' separators, supports elements that are
11210: arrayrefs and hashrefs
11211:
11212: =item *
11213:
11214: arrayref2str($arrayref) : convert an arrayref into a string complete
11215: with escaping and '&' separators, supports elements that are arrayrefs
11216: and hashrefs
11217:
11218: =item *
11219:
11220: str2hash($string) : convert string to hash using unescaping and
11221: splitting on '=' and '&', supports elements that are arrayrefs and
11222: hashrefs
11223:
11224: =item *
11225:
11226: str2array($string) : convert string to hash using unescaping and
11227: splitting on '&', supports elements that are arrayrefs and hashrefs
11228:
11229: =back
11230:
11231: =head2 Logging Routines
11232:
11233: =over 4
11234:
11235: These routines allow one to make log messages in the lonnet.log and
11236: lonnet.perm logfiles.
11237:
11238: =item *
11239:
11240: logtouch() : make sure the logfile, lonnet.log, exists
11241:
11242: =item *
11243:
11244: logthis() : append message to the normal lonnet.log file, it gets
11245: preiodically rolled over and deleted.
11246:
11247: =item *
11248:
11249: logperm() : append a permanent message to lonnet.perm.log, this log
11250: file never gets deleted by any automated portion of the system, only
11251: messages of critical importance should go in here.
11252:
11253: =back
11254:
11255: =head2 General File Helper Routines
11256:
11257: =over 4
11258:
11259: =item *
11260:
11261: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11262: (a) files in /uploaded
11263: (i) If a local copy of the file exists -
11264: compares modification date of local copy with last-modified date for
11265: definitive version stored on home server for course. If local copy is
11266: stale, requests a new version from the home server and stores it.
11267: If the original has been removed from the home server, then local copy
11268: is unlinked.
11269: (ii) If local copy does not exist -
11270: requests the file from the home server and stores it.
11271:
11272: If $caller is 'uploadrep':
11273: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11274: for request for files originally uploaded via DOCS.
11275: - returns 'ok' if fresh local copy now available, -1 otherwise.
11276:
11277: Otherwise:
11278: This indicates a call from the content generation phase of the request.
11279: - returns the entire contents of the file or -1.
11280:
11281: (b) files in /res
11282: - returns the entire contents of a file or -1;
11283: it properly subscribes to and replicates the file if neccessary.
11284:
11285:
11286: =item *
11287:
11288: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11289: reference
11290:
11291: returns either a stat() list of data about the file or an empty list
11292: if the file doesn't exist or couldn't find out about it (connection
11293: problems or user unknown)
11294:
11295: =item *
11296:
11297: filelocation($dir,$file) : returns file system location of a file
11298: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11299: directory that relative $file lookups are to looked in ($dir of /a/dir
11300: and a file of ../bob will become /a/bob)
11301:
11302: =item *
11303:
11304: hreflocation($dir,$file) : returns file system location or a URL; same as
11305: filelocation except for hrefs
11306:
11307: =item *
11308:
11309: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11310:
11311: =back
11312:
11313: =head2 Usererfile file routines (/uploaded*)
11314:
11315: =over 4
11316:
11317: =item *
11318:
11319: userfileupload(): main rotine for putting a file in a user or course's
11320: filespace, arguments are,
11321:
11322: formname - required - this is the name of the element in $env where the
11323: filename, and the contents of the file to create/modifed exist
11324: the filename is in $env{'form.'.$formname.'.filename'} and the
11325: contents of the file is located in $env{'form.'.$formname}
11326: coursedoc - if true, store the file in the course of the active role
11327: of the current user
11328: subdir - required - subdirectory to put the file in under ../userfiles/
11329: if undefined, it will be placed in "unknown"
11330:
11331: (This routine calls clean_filename() to remove any dangerous
11332: characters from the filename, and then calls finuserfileupload() to
11333: complete the transaction)
11334:
11335: returns either the url of the uploaded file (/uploaded/....) if successful
11336: and /adm/notfound.html if unsuccessful
11337:
11338: =item *
11339:
11340: clean_filename(): routine for cleaing a filename up for storage in
11341: userfile space, argument is:
11342:
11343: filename - proposed filename
11344:
11345: returns: the new clean filename
11346:
11347: =item *
11348:
11349: finishuserfileupload(): routine that creaes and sends the file to
11350: userspace, probably shouldn't be called directly
11351:
11352: docuname: username or courseid of destination for the file
11353: docudom: domain of user/course of destination for the file
11354: formname: same as for userfileupload()
11355: fname: filename (inculding subdirectories) for the file
11356:
11357: returns either the url of the uploaded file (/uploaded/....) if successful
11358: and /adm/notfound.html if unsuccessful
11359:
11360: =item *
11361:
11362: renameuserfile(): renames an existing userfile to a new name
11363:
11364: Args:
11365: docuname: username or courseid of destination for the file
11366: docudom: domain of user/course of destination for the file
11367: old: current file name (including any subdirs under userfiles)
11368: new: desired file name (including any subdirs under userfiles)
11369:
11370: =item *
11371:
11372: mkdiruserfile(): creates a directory is a userfiles dir
11373:
11374: Args:
11375: docuname: username or courseid of destination for the file
11376: docudom: domain of user/course of destination for the file
11377: dir: dir to create (including any subdirs under userfiles)
11378:
11379: =item *
11380:
11381: removeuserfile(): removes a file that exists in userfiles
11382:
11383: Args:
11384: docuname: username or courseid of destination for the file
11385: docudom: domain of user/course of destination for the file
11386: fname: filname to delete (including any subdirs under userfiles)
11387:
11388: =item *
11389:
11390: removeuploadedurl(): convience function for removeuserfile()
11391:
11392: Args:
11393: url: a full /uploaded/... url to delete
11394:
11395: =item *
11396:
11397: get_portfile_permissions():
11398: Args:
11399: domain: domain of user or course contain the portfolio files
11400: user: name of user or num of course contain the portfolio files
11401: Returns:
11402: hashref of a dump of the proper file_permissions.db
11403:
11404:
11405: =item *
11406:
11407: get_access_controls():
11408:
11409: Args:
11410: current_permissions: the hash ref returned from get_portfile_permissions()
11411: group: (optional) the group you want the files associated with
11412: file: (optional) the file you want access info on
11413:
11414: Returns:
11415: a hash (keys are file names) of hashes containing
11416: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11417: values are XML containing access control settings (see below)
11418:
11419: Internal notes:
11420:
11421: access controls are stored in file_permissions.db as key=value pairs.
11422: key -> path to file/file_name\0uniqueID:scope_end_start
11423: where scope -> public,guest,course,group,domains or users.
11424: end -> UNIX time for end of access (0 -> no end date)
11425: start -> UNIX time for start of access
11426:
11427: value -> XML description of access control
11428: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11429: <start></start>
11430: <end></end>
11431:
11432: <password></password> for scope type = guest
11433:
11434: <domain></domain> for scope type = course or group
11435: <number></number>
11436: <roles id="">
11437: <role></role>
11438: <access></access>
11439: <section></section>
11440: <group></group>
11441: </roles>
11442:
11443: <dom></dom> for scope type = domains
11444:
11445: <users> for scope type = users
11446: <user>
11447: <uname></uname>
11448: <udom></udom>
11449: </user>
11450: </users>
11451: </scope>
11452:
11453: Access data is also aggregated for each file in an additional key=value pair:
11454: key -> path to file/file_name\0accesscontrol
11455: value -> reference to hash
11456: hash contains key = value pairs
11457: where key = uniqueID:scope_end_start
11458: value = UNIX time record was last updated
11459:
11460: Used to improve speed of look-ups of access controls for each file.
11461:
11462: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11463:
11464: modify_access_controls():
11465:
11466: Modifies access controls for a portfolio file
11467: Args
11468: 1. file name
11469: 2. reference to hash of required changes,
11470: 3. domain
11471: 4. username
11472: where domain,username are the domain of the portfolio owner
11473: (either a user or a course)
11474:
11475: Returns:
11476: 1. result of additions or updates ('ok' or 'error', with error message).
11477: 2. result of deletions ('ok' or 'error', with error message).
11478: 3. reference to hash of any new or updated access controls.
11479: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11480: key = integer (inbound ID)
11481: value = uniqueID
11482:
11483: =back
11484:
11485: =head2 HTTP Helper Routines
11486:
11487: =over 4
11488:
11489: =item *
11490:
11491: escape() : unpack non-word characters into CGI-compatible hex codes
11492:
11493: =item *
11494:
11495: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11496:
11497: =back
11498:
11499: =head1 PRIVATE SUBROUTINES
11500:
11501: =head2 Underlying communication routines (Shouldn't call)
11502:
11503: =over 4
11504:
11505: =item *
11506:
11507: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11508:
11509: =item *
11510:
11511: reply() : uses subreply to send a message to remote machine, logs all failures
11512:
11513: =item *
11514:
11515: critical() : passes a critical message to another server; if cannot
11516: get through then place message in connection buffer directory and
11517: returns con_delayed, if incapable of saving message, returns
11518: con_failed
11519:
11520: =item *
11521:
11522: reconlonc() : tries to reconnect lonc client processes.
11523:
11524: =back
11525:
11526: =head2 Resource Access Logging
11527:
11528: =over 4
11529:
11530: =item *
11531:
11532: flushcourselogs() : flush (save) buffer logs and access logs
11533:
11534: =item *
11535:
11536: courselog($what) : save message for course in hash
11537:
11538: =item *
11539:
11540: courseacclog($what) : save message for course using &courselog(). Perform
11541: special processing for specific resource types (problems, exams, quizzes, etc).
11542:
11543: =item *
11544:
11545: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11546: as a PerlChildExitHandler
11547:
11548: =back
11549:
11550: =head2 Other
11551:
11552: =over 4
11553:
11554: =item *
11555:
11556: symblist($mapname,%newhash) : update symbolic storage links
11557:
11558: =back
11559:
11560: =cut
11561:
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