File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.975:
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Sat Nov 29 10:34:29 2008 UTC (15 years, 7 months ago) by
raeburn
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CVS tags:
HEAD
Bugs 5719 and 5820.
- Do not add contents of files uploaded to essayresponse items in course activity log.
- Round file size (in Mb) to 6 decimal places when setting HWFILESIZE form element.
- HWFILESIZE and HWFILETOOBIG (if set) will be stored in course activity log.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.975 2008/11/29 10:34:29 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 Date::Parse;
77: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
78: $_64bit %env %protocol);
79:
80: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
81: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
82: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
83: %courseownerbuf, %coursetypebuf,$locknum);
84:
85: use IO::Socket;
86: use GDBM_File;
87: use HTML::LCParser;
88: use Fcntl qw(:flock);
89: use Storable qw(thaw nfreeze);
90: use Time::HiRes qw( gettimeofday tv_interval );
91: use Cache::Memcached;
92: use Digest::MD5;
93: use Math::Random;
94: use LONCAPA qw(:DEFAULT :match);
95: use LONCAPA::Configuration;
96:
97: my $readit;
98: my $max_connection_retries = 10; # Or some such value.
99:
100: require Exporter;
101:
102: our @ISA = qw (Exporter);
103: our @EXPORT = qw(%env);
104:
105:
106: # --------------------------------------------------------------------- Logging
107: {
108: my $logid;
109: sub instructor_log {
110: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
111: if (($cnum eq '') || ($cdom eq '')) {
112: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
113: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
114: }
115: $logid++;
116: my $now = time();
117: my $id=$now.'00000'.$$.'00000'.$logid;
118: return &Apache::lonnet::put('nohist_'.$hash_name,
119: { $id => {
120: 'exe_uname' => $env{'user.name'},
121: 'exe_udom' => $env{'user.domain'},
122: 'exe_time' => $now,
123: 'exe_ip' => $ENV{'REMOTE_ADDR'},
124: 'delflag' => $delflag,
125: 'logentry' => $storehash,
126: 'uname' => $uname,
127: 'udom' => $udom,
128: }
129: },$cdom,$cnum);
130: }
131: }
132:
133: sub logtouch {
134: my $execdir=$perlvar{'lonDaemons'};
135: unless (-e "$execdir/logs/lonnet.log") {
136: open(my $fh,">>$execdir/logs/lonnet.log");
137: close $fh;
138: }
139: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
140: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
141: }
142:
143: sub logthis {
144: my $message=shift;
145: my $execdir=$perlvar{'lonDaemons'};
146: my $now=time;
147: my $local=localtime($now);
148: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
149: print $fh "$local ($$): $message\n";
150: close($fh);
151: }
152: return 1;
153: }
154:
155: sub logperm {
156: my $message=shift;
157: my $execdir=$perlvar{'lonDaemons'};
158: my $now=time;
159: my $local=localtime($now);
160: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
161: print $fh "$now:$message:$local\n";
162: close($fh);
163: }
164: return 1;
165: }
166:
167: sub create_connection {
168: my ($hostname,$lonid) = @_;
169: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
170: Type => SOCK_STREAM,
171: Timeout => 10);
172: return 0 if (!$client);
173: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
174: my $result = <$client>;
175: chomp($result);
176: return 1 if ($result eq 'done');
177: return 0;
178: }
179:
180:
181: # -------------------------------------------------- Non-critical communication
182: sub subreply {
183: my ($cmd,$server)=@_;
184: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
185: #
186: # With loncnew process trimming, there's a timing hole between lonc server
187: # process exit and the master server picking up the listen on the AF_UNIX
188: # socket. In that time interval, a lock file will exist:
189:
190: my $lockfile=$peerfile.".lock";
191: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
192: sleep(1);
193: }
194: # At this point, either a loncnew parent is listening or an old lonc
195: # or loncnew child is listening so we can connect or everything's dead.
196: #
197: # We'll give the connection a few tries before abandoning it. If
198: # connection is not possible, we'll con_lost back to the client.
199: #
200: my $client;
201: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
202: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
203: Type => SOCK_STREAM,
204: Timeout => 10);
205: if ($client) {
206: last; # Connected!
207: } else {
208: &create_connection(&hostname($server),$server);
209: }
210: sleep(1); # Try again later if failed connection.
211: }
212: my $answer;
213: if ($client) {
214: print $client "sethost:$server:$cmd\n";
215: $answer=<$client>;
216: if (!$answer) { $answer="con_lost"; }
217: chomp($answer);
218: } else {
219: $answer = 'con_lost'; # Failed connection.
220: }
221: return $answer;
222: }
223:
224: sub reply {
225: my ($cmd,$server)=@_;
226: unless (defined(&hostname($server))) { return 'no_such_host'; }
227: my $answer=subreply($cmd,$server);
228: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
229: &logthis("<font color=\"blue\">WARNING:".
230: " $cmd to $server returned $answer</font>");
231: }
232: return $answer;
233: }
234:
235: # ----------------------------------------------------------- Send USR1 to lonc
236:
237: sub reconlonc {
238: my ($lonid) = @_;
239: my $hostname = &hostname($lonid);
240: if ($lonid) {
241: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
242: if ($hostname && -e $peerfile) {
243: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
244: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
245: Type => SOCK_STREAM,
246: Timeout => 10);
247: if ($client) {
248: print $client ("reset_retries\n");
249: my $answer=<$client>;
250: #reset just this one.
251: }
252: }
253: return;
254: }
255:
256: &logthis("Trying to reconnect lonc");
257: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
258: if (open(my $fh,"<$loncfile")) {
259: my $loncpid=<$fh>;
260: chomp($loncpid);
261: if (kill 0 => $loncpid) {
262: &logthis("lonc at pid $loncpid responding, sending USR1");
263: kill USR1 => $loncpid;
264: sleep 1;
265: } else {
266: &logthis(
267: "<font color=\"blue\">WARNING:".
268: " lonc at pid $loncpid not responding, giving up</font>");
269: }
270: } else {
271: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
272: }
273: }
274:
275: # ------------------------------------------------------ Critical communication
276:
277: sub critical {
278: my ($cmd,$server)=@_;
279: unless (&hostname($server)) {
280: &logthis("<font color=\"blue\">WARNING:".
281: " Critical message to unknown server ($server)</font>");
282: return 'no_such_host';
283: }
284: my $answer=reply($cmd,$server);
285: if ($answer eq 'con_lost') {
286: &reconlonc("$perlvar{'lonSockDir'}/$server");
287: my $answer=reply($cmd,$server);
288: if ($answer eq 'con_lost') {
289: my $now=time;
290: my $middlename=$cmd;
291: $middlename=substr($middlename,0,16);
292: $middlename=~s/\W//g;
293: my $dfilename=
294: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
295: $dumpcount++;
296: {
297: my $dfh;
298: if (open($dfh,">$dfilename")) {
299: print $dfh "$cmd\n";
300: close($dfh);
301: }
302: }
303: sleep 2;
304: my $wcmd='';
305: {
306: my $dfh;
307: if (open($dfh,"<$dfilename")) {
308: $wcmd=<$dfh>;
309: close($dfh);
310: }
311: }
312: chomp($wcmd);
313: if ($wcmd eq $cmd) {
314: &logthis("<font color=\"blue\">WARNING: ".
315: "Connection buffer $dfilename: $cmd</font>");
316: &logperm("D:$server:$cmd");
317: return 'con_delayed';
318: } else {
319: &logthis("<font color=\"red\">CRITICAL:"
320: ." Critical connection failed: $server $cmd</font>");
321: &logperm("F:$server:$cmd");
322: return 'con_failed';
323: }
324: }
325: }
326: return $answer;
327: }
328:
329: # ------------------------------------------- check if return value is an error
330:
331: sub error {
332: my ($result) = @_;
333: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
334: if ($2 == 2) { return undef; }
335: return $1;
336: }
337: return undef;
338: }
339:
340: sub convert_and_load_session_env {
341: my ($lonidsdir,$handle)=@_;
342: my @profile;
343: {
344: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
345: if (!$opened) {
346: return 0;
347: }
348: flock($idf,LOCK_SH);
349: @profile=<$idf>;
350: close($idf);
351: }
352: my %temp_env;
353: foreach my $line (@profile) {
354: if ($line !~ m/=/) {
355: return 0;
356: }
357: chomp($line);
358: my ($envname,$envvalue)=split(/=/,$line,2);
359: $temp_env{&unescape($envname)} = &unescape($envvalue);
360: }
361: unlink("$lonidsdir/$handle.id");
362: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
363: 0640)) {
364: %disk_env = %temp_env;
365: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
366: untie(%disk_env);
367: }
368: return 1;
369: }
370:
371: # ------------------------------------------- Transfer profile into environment
372: my $env_loaded;
373: sub transfer_profile_to_env {
374: my ($lonidsdir,$handle,$force_transfer) = @_;
375: if (!$force_transfer && $env_loaded) { return; }
376:
377: if (!defined($lonidsdir)) {
378: $lonidsdir = $perlvar{'lonIDsDir'};
379: }
380: if (!defined($handle)) {
381: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
382: }
383:
384: my $convert;
385: {
386: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
387: if (!$opened) {
388: return;
389: }
390: flock($idf,LOCK_SH);
391: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
392: &GDBM_READER(),0640)) {
393: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
394: untie(%disk_env);
395: } else {
396: $convert = 1;
397: }
398: }
399: if ($convert) {
400: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
401: &logthis("Failed to load session, or convert session.");
402: }
403: }
404:
405: my %remove;
406: while ( my $envname = each(%env) ) {
407: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
408: if ($time < time-300) {
409: $remove{$key}++;
410: }
411: }
412: }
413:
414: $env{'user.environment'} = "$lonidsdir/$handle.id";
415: $env_loaded=1;
416: foreach my $expired_key (keys(%remove)) {
417: &delenv($expired_key);
418: }
419: }
420:
421: # ---------------------------------------------------- Check for valid session
422: sub check_for_valid_session {
423: my ($r) = @_;
424: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
425: my $lonid=$cookies{'lonID'};
426: return undef if (!$lonid);
427:
428: my $handle=&LONCAPA::clean_handle($lonid->value);
429: my $lonidsdir=$r->dir_config('lonIDsDir');
430: return undef if (!-e "$lonidsdir/$handle.id");
431:
432: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
433: return undef if (!$opened);
434:
435: flock($idf,LOCK_SH);
436: my %disk_env;
437: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
438: &GDBM_READER(),0640)) {
439: return undef;
440: }
441:
442: if (!defined($disk_env{'user.name'})
443: || !defined($disk_env{'user.domain'})) {
444: return undef;
445: }
446: return $handle;
447: }
448:
449: sub timed_flock {
450: my ($file,$lock_type) = @_;
451: my $failed=0;
452: eval {
453: local $SIG{__DIE__}='DEFAULT';
454: local $SIG{ALRM}=sub {
455: $failed=1;
456: die("failed lock");
457: };
458: alarm(13);
459: flock($file,$lock_type);
460: alarm(0);
461: };
462: if ($failed) {
463: return undef;
464: } else {
465: return 1;
466: }
467: }
468:
469: # ---------------------------------------------------------- Append Environment
470:
471: sub appenv {
472: my ($newenv,$roles) = @_;
473: if (ref($newenv) eq 'HASH') {
474: foreach my $key (keys(%{$newenv})) {
475: my $refused = 0;
476: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
477: $refused = 1;
478: if (ref($roles) eq 'ARRAY') {
479: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
480: if (grep(/^\Q$role\E$/,@{$roles})) {
481: $refused = 0;
482: }
483: }
484: }
485: if ($refused) {
486: &logthis("<font color=\"blue\">WARNING: ".
487: "Attempt to modify environment ".$key." to ".$newenv->{$key}
488: .'</font>');
489: delete($newenv->{$key});
490: } else {
491: $env{$key}=$newenv->{$key};
492: }
493: }
494: my $opened = open(my $env_file,'+<',$env{'user.environment'});
495: if ($opened
496: && &timed_flock($env_file,LOCK_EX)
497: &&
498: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
499: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
500: while (my ($key,$value) = each(%{$newenv})) {
501: $disk_env{$key} = $value;
502: }
503: untie(%disk_env);
504: }
505: }
506: return 'ok';
507: }
508: # ----------------------------------------------------- Delete from Environment
509:
510: sub delenv {
511: my $delthis=shift;
512: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
513: &logthis("<font color=\"blue\">WARNING: ".
514: "Attempt to delete from environment ".$delthis);
515: return 'error';
516: }
517: my $opened = open(my $env_file,'+<',$env{'user.environment'});
518: if ($opened
519: && &timed_flock($env_file,LOCK_EX)
520: &&
521: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
522: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
523: foreach my $key (keys(%disk_env)) {
524: if ($key=~/^$delthis/) {
525: delete($env{$key});
526: delete($disk_env{$key});
527: }
528: }
529: untie(%disk_env);
530: }
531: return 'ok';
532: }
533:
534: sub get_env_multiple {
535: my ($name) = @_;
536: my @values;
537: if (defined($env{$name})) {
538: # exists is it an array
539: if (ref($env{$name})) {
540: @values=@{ $env{$name} };
541: } else {
542: $values[0]=$env{$name};
543: }
544: }
545: return(@values);
546: }
547:
548: # ------------------------------------------------------------------- Locking
549:
550: sub set_lock {
551: my ($text)=@_;
552: $locknum++;
553: my $id=$$.'-'.$locknum;
554: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
555: 'session.lock.'.$id => $text});
556: return $id;
557: }
558:
559: sub get_locks {
560: my $num=0;
561: my %texts=();
562: foreach my $lock (split(/\,/,$env{'session.locks'})) {
563: if ($lock=~/\w/) {
564: $num++;
565: $texts{$lock}=$env{'session.lock.'.$lock};
566: }
567: }
568: return ($num,%texts);
569: }
570:
571: sub remove_lock {
572: my ($id)=@_;
573: my $newlocks='';
574: foreach my $lock (split(/\,/,$env{'session.locks'})) {
575: if (($lock=~/\w/) && ($lock ne $id)) {
576: $newlocks.=','.$lock;
577: }
578: }
579: &appenv({'session.locks' => $newlocks});
580: &delenv('session.lock.'.$id);
581: }
582:
583: sub remove_all_locks {
584: my $activelocks=$env{'session.locks'};
585: foreach my $lock (split(/\,/,$env{'session.locks'})) {
586: if ($lock=~/\w/) {
587: &remove_lock($lock);
588: }
589: }
590: }
591:
592:
593: # ------------------------------------------ Find out current server userload
594: sub userload {
595: my $numusers=0;
596: {
597: opendir(LONIDS,$perlvar{'lonIDsDir'});
598: my $filename;
599: my $curtime=time;
600: while ($filename=readdir(LONIDS)) {
601: next if ($filename eq '.' || $filename eq '..');
602: next if ($filename =~ /publicuser_\d+\.id/);
603: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
604: if ($curtime-$mtime < 1800) { $numusers++; }
605: }
606: closedir(LONIDS);
607: }
608: my $userloadpercent=0;
609: my $maxuserload=$perlvar{'lonUserLoadLim'};
610: if ($maxuserload) {
611: $userloadpercent=100*$numusers/$maxuserload;
612: }
613: $userloadpercent=sprintf("%.2f",$userloadpercent);
614: return $userloadpercent;
615: }
616:
617: # ------------------------------------------ Fight off request when overloaded
618:
619: sub overloaderror {
620: my ($r,$checkserver)=@_;
621: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
622: my $loadavg;
623: if ($checkserver eq $perlvar{'lonHostID'}) {
624: open(my $loadfile,'/proc/loadavg');
625: $loadavg=<$loadfile>;
626: $loadavg =~ s/\s.*//g;
627: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
628: close($loadfile);
629: } else {
630: $loadavg=&reply('load',$checkserver);
631: }
632: my $overload=$loadavg-100;
633: if ($overload>0) {
634: $r->err_headers_out->{'Retry-After'}=$overload;
635: $r->log_error('Overload of '.$overload.' on '.$checkserver);
636: return 413;
637: }
638: return '';
639: }
640:
641: # ------------------------------ Find server with least workload from spare.tab
642:
643: sub spareserver {
644: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
645: my $spare_server;
646: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
647: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
648: : $userloadpercent;
649:
650: foreach my $try_server (@{ $spareid{'primary'} }) {
651: ($spare_server, $lowest_load) =
652: &compare_server_load($try_server, $spare_server, $lowest_load);
653: }
654:
655: my $found_server = ($spare_server ne '' && $lowest_load < 100);
656:
657: if (!$found_server) {
658: foreach my $try_server (@{ $spareid{'default'} }) {
659: ($spare_server, $lowest_load) =
660: &compare_server_load($try_server, $spare_server, $lowest_load);
661: }
662: }
663:
664: if (!$want_server_name) {
665: my $protocol = 'http';
666: if ($protocol{$spare_server} eq 'https') {
667: $protocol = $protocol{$spare_server};
668: }
669: $spare_server = $protocol.'://'.&hostname($spare_server);
670: }
671: return $spare_server;
672: }
673:
674: sub compare_server_load {
675: my ($try_server, $spare_server, $lowest_load) = @_;
676:
677: my $loadans = &reply('load', $try_server);
678: my $userloadans = &reply('userload',$try_server);
679:
680: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
681: next; #didn't get a number from the server
682: }
683:
684: my $load;
685: if ($loadans =~ /\d/) {
686: if ($userloadans =~ /\d/) {
687: #both are numbers, pick the bigger one
688: $load = ($loadans > $userloadans) ? $loadans
689: : $userloadans;
690: } else {
691: $load = $loadans;
692: }
693: } else {
694: $load = $userloadans;
695: }
696:
697: if (($load =~ /\d/) && ($load < $lowest_load)) {
698: $spare_server = $try_server;
699: $lowest_load = $load;
700: }
701: return ($spare_server,$lowest_load);
702: }
703:
704: # --------------------------- ask offload servers if user already has a session
705: sub find_existing_session {
706: my ($udom,$uname) = @_;
707: foreach my $try_server (@{ $spareid{'primary'} },
708: @{ $spareid{'default'} }) {
709: return $try_server if (&has_user_session($try_server, $udom, $uname));
710: }
711: return;
712: }
713:
714: # -------------------------------- ask if server already has a session for user
715: sub has_user_session {
716: my ($lonid,$udom,$uname) = @_;
717: my $result = &reply(join(':','userhassession',
718: map {&escape($_)} ($udom,$uname)),$lonid);
719: return 1 if ($result eq 'ok');
720:
721: return 0;
722: }
723:
724: # --------------------------------------------- Try to change a user's password
725:
726: sub changepass {
727: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
728: $currentpass = &escape($currentpass);
729: $newpass = &escape($newpass);
730: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
731: $server);
732: if (! $answer) {
733: &logthis("No reply on password change request to $server ".
734: "by $uname in domain $udom.");
735: } elsif ($answer =~ "^ok") {
736: &logthis("$uname in $udom successfully changed their password ".
737: "on $server.");
738: } elsif ($answer =~ "^pwchange_failure") {
739: &logthis("$uname in $udom was unable to change their password ".
740: "on $server. The action was blocked by either lcpasswd ".
741: "or pwchange");
742: } elsif ($answer =~ "^non_authorized") {
743: &logthis("$uname in $udom did not get their password correct when ".
744: "attempting to change it on $server.");
745: } elsif ($answer =~ "^auth_mode_error") {
746: &logthis("$uname in $udom attempted to change their password despite ".
747: "not being locally or internally authenticated on $server.");
748: } elsif ($answer =~ "^unknown_user") {
749: &logthis("$uname in $udom attempted to change their password ".
750: "on $server but were unable to because $server is not ".
751: "their home server.");
752: } elsif ($answer =~ "^refused") {
753: &logthis("$server refused to change $uname in $udom password because ".
754: "it was sent an unencrypted request to change the password.");
755: }
756: return $answer;
757: }
758:
759: # ----------------------- Try to determine user's current authentication scheme
760:
761: sub queryauthenticate {
762: my ($uname,$udom)=@_;
763: my $uhome=&homeserver($uname,$udom);
764: if (!$uhome) {
765: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
766: return 'no_host';
767: }
768: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
769: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
770: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
771: }
772: return $answer;
773: }
774:
775: # --------- Try to authenticate user from domain's lib servers (first this one)
776:
777: sub authenticate {
778: my ($uname,$upass,$udom,$checkdefauth)=@_;
779: $upass=&escape($upass);
780: $uname= &LONCAPA::clean_username($uname);
781: my $uhome=&homeserver($uname,$udom,1);
782: my $newhome;
783: if ((!$uhome) || ($uhome eq 'no_host')) {
784: # Maybe the machine was offline and only re-appeared again recently?
785: &reconlonc();
786: # One more
787: $uhome=&homeserver($uname,$udom,1);
788: if (($uhome eq 'no_host') && $checkdefauth) {
789: if (defined(&domain($udom,'primary'))) {
790: $newhome=&domain($udom,'primary');
791: }
792: if ($newhome ne '') {
793: $uhome = $newhome;
794: }
795: }
796: if ((!$uhome) || ($uhome eq 'no_host')) {
797: &logthis("User $uname at $udom is unknown in authenticate");
798: return 'no_host';
799: }
800: }
801: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
802: if ($answer eq 'authorized') {
803: if ($newhome) {
804: &logthis("User $uname at $udom authorized by $uhome, but needs account");
805: return 'no_account_on_host';
806: } else {
807: &logthis("User $uname at $udom authorized by $uhome");
808: return $uhome;
809: }
810: }
811: if ($answer eq 'non_authorized') {
812: &logthis("User $uname at $udom rejected by $uhome");
813: return 'no_host';
814: }
815: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
816: return 'no_host';
817: }
818:
819: # ---------------------- Find the homebase for a user from domain's lib servers
820:
821: my %homecache;
822: sub homeserver {
823: my ($uname,$udom,$ignoreBadCache)=@_;
824: my $index="$uname:$udom";
825:
826: if (exists($homecache{$index})) { return $homecache{$index}; }
827:
828: my %servers = &get_servers($udom,'library');
829: foreach my $tryserver (keys(%servers)) {
830: next if ($ignoreBadCache ne 'true' &&
831: exists($badServerCache{$tryserver}));
832:
833: my $answer=reply("home:$udom:$uname",$tryserver);
834: if ($answer eq 'found') {
835: delete($badServerCache{$tryserver});
836: return $homecache{$index}=$tryserver;
837: } elsif ($answer eq 'no_host') {
838: $badServerCache{$tryserver}=1;
839: }
840: }
841: return 'no_host';
842: }
843:
844: # ------------------------------------- Find the usernames behind a list of IDs
845:
846: sub idget {
847: my ($udom,@ids)=@_;
848: my %returnhash=();
849:
850: my %servers = &get_servers($udom,'library');
851: foreach my $tryserver (keys(%servers)) {
852: my $idlist=join('&',@ids);
853: $idlist=~tr/A-Z/a-z/;
854: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
855: my @answer=();
856: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
857: @answer=split(/\&/,$reply);
858: } ;
859: my $i;
860: for ($i=0;$i<=$#ids;$i++) {
861: if ($answer[$i]) {
862: $returnhash{$ids[$i]}=$answer[$i];
863: }
864: }
865: }
866: return %returnhash;
867: }
868:
869: # ------------------------------------- Find the IDs behind a list of usernames
870:
871: sub idrget {
872: my ($udom,@unames)=@_;
873: my %returnhash=();
874: foreach my $uname (@unames) {
875: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
876: }
877: return %returnhash;
878: }
879:
880: # ------------------------------- Store away a list of names and associated IDs
881:
882: sub idput {
883: my ($udom,%ids)=@_;
884: my %servers=();
885: foreach my $uname (keys(%ids)) {
886: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
887: my $uhom=&homeserver($uname,$udom);
888: if ($uhom ne 'no_host') {
889: my $id=&escape($ids{$uname});
890: $id=~tr/A-Z/a-z/;
891: my $esc_unam=&escape($uname);
892: if ($servers{$uhom}) {
893: $servers{$uhom}.='&'.$id.'='.$esc_unam;
894: } else {
895: $servers{$uhom}=$id.'='.$esc_unam;
896: }
897: }
898: }
899: foreach my $server (keys(%servers)) {
900: &critical('idput:'.$udom.':'.$servers{$server},$server);
901: }
902: }
903:
904: # ------------------------------------------- get items from domain db files
905:
906: sub get_dom {
907: my ($namespace,$storearr,$udom,$uhome)=@_;
908: my $items='';
909: foreach my $item (@$storearr) {
910: $items.=&escape($item).'&';
911: }
912: $items=~s/\&$//;
913: if (!$udom) {
914: $udom=$env{'user.domain'};
915: if (defined(&domain($udom,'primary'))) {
916: $uhome=&domain($udom,'primary');
917: } else {
918: undef($uhome);
919: }
920: } else {
921: if (!$uhome) {
922: if (defined(&domain($udom,'primary'))) {
923: $uhome=&domain($udom,'primary');
924: }
925: }
926: }
927: if ($udom && $uhome && ($uhome ne 'no_host')) {
928: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
929: my %returnhash;
930: if ($rep eq '' || $rep =~ /^error: 2 /) {
931: return %returnhash;
932: }
933: my @pairs=split(/\&/,$rep);
934: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
935: return @pairs;
936: }
937: my $i=0;
938: foreach my $item (@$storearr) {
939: $returnhash{$item}=&thaw_unescape($pairs[$i]);
940: $i++;
941: }
942: return %returnhash;
943: } else {
944: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
945: }
946: }
947:
948: # -------------------------------------------- put items in domain db files
949:
950: sub put_dom {
951: my ($namespace,$storehash,$udom,$uhome)=@_;
952: if (!$udom) {
953: $udom=$env{'user.domain'};
954: if (defined(&domain($udom,'primary'))) {
955: $uhome=&domain($udom,'primary');
956: } else {
957: undef($uhome);
958: }
959: } else {
960: if (!$uhome) {
961: if (defined(&domain($udom,'primary'))) {
962: $uhome=&domain($udom,'primary');
963: }
964: }
965: }
966: if ($udom && $uhome && ($uhome ne 'no_host')) {
967: my $items='';
968: foreach my $item (keys(%$storehash)) {
969: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
970: }
971: $items=~s/\&$//;
972: return &reply("putdom:$udom:$namespace:$items",$uhome);
973: } else {
974: &logthis("put_dom failed - no homeserver and/or domain");
975: }
976: }
977:
978: sub retrieve_inst_usertypes {
979: my ($udom) = @_;
980: my (%returnhash,@order);
981: if (defined(&domain($udom,'primary'))) {
982: my $uhome=&domain($udom,'primary');
983: my $rep=&reply("inst_usertypes:$udom",$uhome);
984: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
985: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
986: return (\%returnhash,\@order);
987: }
988: my ($hashitems,$orderitems) = split(/:/,$rep);
989: my @pairs=split(/\&/,$hashitems);
990: foreach my $item (@pairs) {
991: my ($key,$value)=split(/=/,$item,2);
992: $key = &unescape($key);
993: next if ($key =~ /^error: 2 /);
994: $returnhash{$key}=&thaw_unescape($value);
995: }
996: my @esc_order = split(/\&/,$orderitems);
997: foreach my $item (@esc_order) {
998: push(@order,&unescape($item));
999: }
1000: } else {
1001: &logthis("get_dom failed - no primary domain server for $udom");
1002: }
1003: return (\%returnhash,\@order);
1004: }
1005:
1006: sub is_domainimage {
1007: my ($url) = @_;
1008: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1009: if (&domain($1) ne '') {
1010: return '1';
1011: }
1012: }
1013: return;
1014: }
1015:
1016: sub inst_directory_query {
1017: my ($srch) = @_;
1018: my $udom = $srch->{'srchdomain'};
1019: my %results;
1020: my $homeserver = &domain($udom,'primary');
1021: my $outcome;
1022: if ($homeserver ne '') {
1023: my $queryid=&reply("querysend:instdirsearch:".
1024: &escape($srch->{'srchby'}).':'.
1025: &escape($srch->{'srchterm'}).':'.
1026: &escape($srch->{'srchtype'}),$homeserver);
1027: my $host=&hostname($homeserver);
1028: if ($queryid !~/^\Q$host\E\_/) {
1029: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1030: return;
1031: }
1032: my $response = &get_query_reply($queryid);
1033: my $maxtries = 5;
1034: my $tries = 1;
1035: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1036: $response = &get_query_reply($queryid);
1037: $tries ++;
1038: }
1039:
1040: if (!&error($response) && $response ne 'refused') {
1041: if ($response eq 'unavailable') {
1042: $outcome = $response;
1043: } else {
1044: $outcome = 'ok';
1045: my @matches = split(/\n/,$response);
1046: foreach my $match (@matches) {
1047: my ($key,$value) = split(/=/,$match);
1048: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1049: }
1050: }
1051: }
1052: }
1053: return ($outcome,%results);
1054: }
1055:
1056: sub usersearch {
1057: my ($srch) = @_;
1058: my $dom = $srch->{'srchdomain'};
1059: my %results;
1060: my %libserv = &all_library();
1061: my $query = 'usersearch';
1062: foreach my $tryserver (keys(%libserv)) {
1063: if (&host_domain($tryserver) eq $dom) {
1064: my $host=&hostname($tryserver);
1065: my $queryid=
1066: &reply("querysend:".&escape($query).':'.
1067: &escape($srch->{'srchby'}).':'.
1068: &escape($srch->{'srchtype'}).':'.
1069: &escape($srch->{'srchterm'}),$tryserver);
1070: if ($queryid !~/^\Q$host\E\_/) {
1071: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1072: next;
1073: }
1074: my $reply = &get_query_reply($queryid);
1075: my $maxtries = 1;
1076: my $tries = 1;
1077: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1078: $reply = &get_query_reply($queryid);
1079: $tries ++;
1080: }
1081: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1082: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1083: } else {
1084: my @matches;
1085: if ($reply =~ /\n/) {
1086: @matches = split(/\n/,$reply);
1087: } else {
1088: @matches = split(/\&/,$reply);
1089: }
1090: foreach my $match (@matches) {
1091: my ($uname,$udom,%userhash);
1092: foreach my $entry (split(/:/,$match)) {
1093: my ($key,$value) =
1094: map {&unescape($_);} split(/=/,$entry);
1095: $userhash{$key} = $value;
1096: if ($key eq 'username') {
1097: $uname = $value;
1098: } elsif ($key eq 'domain') {
1099: $udom = $value;
1100: }
1101: }
1102: $results{$uname.':'.$udom} = \%userhash;
1103: }
1104: }
1105: }
1106: }
1107: return %results;
1108: }
1109:
1110: sub get_instuser {
1111: my ($udom,$uname,$id) = @_;
1112: my $homeserver = &domain($udom,'primary');
1113: my ($outcome,%results);
1114: if ($homeserver ne '') {
1115: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1116: &escape($id).':'.&escape($udom),$homeserver);
1117: my $host=&hostname($homeserver);
1118: if ($queryid !~/^\Q$host\E\_/) {
1119: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1120: return;
1121: }
1122: my $response = &get_query_reply($queryid);
1123: my $maxtries = 5;
1124: my $tries = 1;
1125: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1126: $response = &get_query_reply($queryid);
1127: $tries ++;
1128: }
1129: if (!&error($response) && $response ne 'refused') {
1130: if ($response eq 'unavailable') {
1131: $outcome = $response;
1132: } else {
1133: $outcome = 'ok';
1134: my @matches = split(/\n/,$response);
1135: foreach my $match (@matches) {
1136: my ($key,$value) = split(/=/,$match);
1137: $results{&unescape($key)} = &thaw_unescape($value);
1138: }
1139: }
1140: }
1141: }
1142: my %userinfo;
1143: if (ref($results{$uname}) eq 'HASH') {
1144: %userinfo = %{$results{$uname}};
1145: }
1146: return ($outcome,%userinfo);
1147: }
1148:
1149: sub inst_rulecheck {
1150: my ($udom,$uname,$id,$item,$rules) = @_;
1151: my %returnhash;
1152: if ($udom ne '') {
1153: if (ref($rules) eq 'ARRAY') {
1154: @{$rules} = map {&escape($_);} (@{$rules});
1155: my $rulestr = join(':',@{$rules});
1156: my $homeserver=&domain($udom,'primary');
1157: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1158: my $response;
1159: if ($item eq 'username') {
1160: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1161: ':'.&escape($uname).':'.$rulestr,
1162: $homeserver));
1163: } elsif ($item eq 'id') {
1164: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1165: ':'.&escape($id).':'.$rulestr,
1166: $homeserver));
1167: } elsif ($item eq 'selfcreate') {
1168: $response=&unescape(&reply('instselfcreatecheck:'.
1169: &escape($udom).':'.&escape($uname).
1170: ':'.$rulestr,$homeserver));
1171: }
1172: if ($response ne 'refused') {
1173: my @pairs=split(/\&/,$response);
1174: foreach my $item (@pairs) {
1175: my ($key,$value)=split(/=/,$item,2);
1176: $key = &unescape($key);
1177: next if ($key =~ /^error: 2 /);
1178: $returnhash{$key}=&thaw_unescape($value);
1179: }
1180: }
1181: }
1182: }
1183: }
1184: return %returnhash;
1185: }
1186:
1187: sub inst_userrules {
1188: my ($udom,$check) = @_;
1189: my (%ruleshash,@ruleorder);
1190: if ($udom ne '') {
1191: my $homeserver=&domain($udom,'primary');
1192: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1193: my $response;
1194: if ($check eq 'id') {
1195: $response=&reply('instidrules:'.&escape($udom),
1196: $homeserver);
1197: } elsif ($check eq 'email') {
1198: $response=&reply('instemailrules:'.&escape($udom),
1199: $homeserver);
1200: } else {
1201: $response=&reply('instuserrules:'.&escape($udom),
1202: $homeserver);
1203: }
1204: if (($response ne 'refused') && ($response ne 'error') &&
1205: ($response ne 'unknown_cmd') &&
1206: ($response ne 'no_such_host')) {
1207: my ($hashitems,$orderitems) = split(/:/,$response);
1208: my @pairs=split(/\&/,$hashitems);
1209: foreach my $item (@pairs) {
1210: my ($key,$value)=split(/=/,$item,2);
1211: $key = &unescape($key);
1212: next if ($key =~ /^error: 2 /);
1213: $ruleshash{$key}=&thaw_unescape($value);
1214: }
1215: my @esc_order = split(/\&/,$orderitems);
1216: foreach my $item (@esc_order) {
1217: push(@ruleorder,&unescape($item));
1218: }
1219: }
1220: }
1221: }
1222: return (\%ruleshash,\@ruleorder);
1223: }
1224:
1225: # ------------------------- Get Authentication and Language Defaults for Domain
1226:
1227: sub get_domain_defaults {
1228: my ($domain) = @_;
1229: my $cachetime = 60*60*24;
1230: my ($defauthtype,$defautharg,$deflang);
1231: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1232: if (defined($cached)) {
1233: if (ref($result) eq 'HASH') {
1234: return %{$result};
1235: }
1236: }
1237: my %domdefaults;
1238: my %domconfig =
1239: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1240: if (ref($domconfig{'defaults'}) eq 'HASH') {
1241: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1242: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1243: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1244: } else {
1245: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1246: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1247: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1248: }
1249: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1250: $cachetime);
1251: return %domdefaults;
1252: }
1253:
1254: # --------------------------------------------------- Assign a key to a student
1255:
1256: sub assign_access_key {
1257: #
1258: # a valid key looks like uname:udom#comments
1259: # comments are being appended
1260: #
1261: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1262: $kdom=
1263: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1264: $knum=
1265: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1266: $cdom=
1267: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1268: $cnum=
1269: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1270: $udom=$env{'user.name'} unless (defined($udom));
1271: $uname=$env{'user.domain'} unless (defined($uname));
1272: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1273: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1274: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1275: # assigned to this person
1276: # - this should not happen,
1277: # unless something went wrong
1278: # the first time around
1279: # ready to assign
1280: $logentry=$1.'; '.$logentry;
1281: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1282: $kdom,$knum) eq 'ok') {
1283: # key now belongs to user
1284: my $envkey='key.'.$cdom.'_'.$cnum;
1285: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1286: &appenv({'environment.'.$envkey => $ckey});
1287: return 'ok';
1288: } else {
1289: return
1290: 'error: Count not permanently assign key, will need to be re-entered later.';
1291: }
1292: } else {
1293: return 'error: Could not assign key, try again later.';
1294: }
1295: } elsif (!$existing{$ckey}) {
1296: # the key does not exist
1297: return 'error: The key does not exist';
1298: } else {
1299: # the key is somebody else's
1300: return 'error: The key is already in use';
1301: }
1302: }
1303:
1304: # ------------------------------------------ put an additional comment on a key
1305:
1306: sub comment_access_key {
1307: #
1308: # a valid key looks like uname:udom#comments
1309: # comments are being appended
1310: #
1311: my ($ckey,$cdom,$cnum,$logentry)=@_;
1312: $cdom=
1313: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1314: $cnum=
1315: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1316: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1317: if ($existing{$ckey}) {
1318: $existing{$ckey}.='; '.$logentry;
1319: # ready to assign
1320: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1321: $cdom,$cnum) eq 'ok') {
1322: return 'ok';
1323: } else {
1324: return 'error: Count not store comment.';
1325: }
1326: } else {
1327: # the key does not exist
1328: return 'error: The key does not exist';
1329: }
1330: }
1331:
1332: # ------------------------------------------------------ Generate a set of keys
1333:
1334: sub generate_access_keys {
1335: my ($number,$cdom,$cnum,$logentry)=@_;
1336: $cdom=
1337: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1338: $cnum=
1339: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1340: unless (&allowed('mky',$cdom)) { return 0; }
1341: unless (($cdom) && ($cnum)) { return 0; }
1342: if ($number>10000) { return 0; }
1343: sleep(2); # make sure don't get same seed twice
1344: srand(time()^($$+($$<<15))); # from "Programming Perl"
1345: my $total=0;
1346: for (my $i=1;$i<=$number;$i++) {
1347: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1348: sprintf("%lx",int(100000*rand)).'-'.
1349: sprintf("%lx",int(100000*rand));
1350: $newkey=~s/1/g/g; # folks mix up 1 and l
1351: $newkey=~s/0/h/g; # and also 0 and O
1352: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1353: if ($existing{$newkey}) {
1354: $i--;
1355: } else {
1356: if (&put('accesskeys',
1357: { $newkey => '# generated '.localtime().
1358: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1359: '; '.$logentry },
1360: $cdom,$cnum) eq 'ok') {
1361: $total++;
1362: }
1363: }
1364: }
1365: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1366: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1367: return $total;
1368: }
1369:
1370: # ------------------------------------------------------- Validate an accesskey
1371:
1372: sub validate_access_key {
1373: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1374: $cdom=
1375: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1376: $cnum=
1377: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1378: $udom=$env{'user.domain'} unless (defined($udom));
1379: $uname=$env{'user.name'} unless (defined($uname));
1380: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1381: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1382: }
1383:
1384: # ------------------------------------- Find the section of student in a course
1385: sub devalidate_getsection_cache {
1386: my ($udom,$unam,$courseid)=@_;
1387: my $hashid="$udom:$unam:$courseid";
1388: &devalidate_cache_new('getsection',$hashid);
1389: }
1390:
1391: sub courseid_to_courseurl {
1392: my ($courseid) = @_;
1393: #already url style courseid
1394: return $courseid if ($courseid =~ m{^/});
1395:
1396: if (exists($env{'course.'.$courseid.'.num'})) {
1397: my $cnum = $env{'course.'.$courseid.'.num'};
1398: my $cdom = $env{'course.'.$courseid.'.domain'};
1399: return "/$cdom/$cnum";
1400: }
1401:
1402: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1403: if (exists($courseinfo{'num'})) {
1404: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1405: }
1406:
1407: return undef;
1408: }
1409:
1410: sub getsection {
1411: my ($udom,$unam,$courseid)=@_;
1412: my $cachetime=1800;
1413:
1414: my $hashid="$udom:$unam:$courseid";
1415: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1416: if (defined($cached)) { return $result; }
1417:
1418: my %Pending;
1419: my %Expired;
1420: #
1421: # Each role can either have not started yet (pending), be active,
1422: # or have expired.
1423: #
1424: # If there is an active role, we are done.
1425: #
1426: # If there is more than one role which has not started yet,
1427: # choose the one which will start sooner
1428: # If there is one role which has not started yet, return it.
1429: #
1430: # If there is more than one expired role, choose the one which ended last.
1431: # If there is a role which has expired, return it.
1432: #
1433: $courseid = &courseid_to_courseurl($courseid);
1434: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1435: foreach my $key (keys(%roleshash)) {
1436: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1437: my $section=$1;
1438: if ($key eq $courseid.'_st') { $section=''; }
1439: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1440: my $now=time;
1441: if (defined($end) && $end && ($now > $end)) {
1442: $Expired{$end}=$section;
1443: next;
1444: }
1445: if (defined($start) && $start && ($now < $start)) {
1446: $Pending{$start}=$section;
1447: next;
1448: }
1449: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1450: }
1451: #
1452: # Presumedly there will be few matching roles from the above
1453: # loop and the sorting time will be negligible.
1454: if (scalar(keys(%Pending))) {
1455: my ($time) = sort {$a <=> $b} keys(%Pending);
1456: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1457: }
1458: if (scalar(keys(%Expired))) {
1459: my @sorted = sort {$a <=> $b} keys(%Expired);
1460: my $time = pop(@sorted);
1461: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1462: }
1463: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1464: }
1465:
1466: sub save_cache {
1467: &purge_remembered();
1468: #&Apache::loncommon::validate_page();
1469: undef(%env);
1470: undef($env_loaded);
1471: }
1472:
1473: my $to_remember=-1;
1474: my %remembered;
1475: my %accessed;
1476: my $kicks=0;
1477: my $hits=0;
1478: sub make_key {
1479: my ($name,$id) = @_;
1480: if (length($id) > 65
1481: && length(&escape($id)) > 200) {
1482: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1483: }
1484: return &escape($name.':'.$id);
1485: }
1486:
1487: sub devalidate_cache_new {
1488: my ($name,$id,$debug) = @_;
1489: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1490: $id=&make_key($name,$id);
1491: $memcache->delete($id);
1492: delete($remembered{$id});
1493: delete($accessed{$id});
1494: }
1495:
1496: sub is_cached_new {
1497: my ($name,$id,$debug) = @_;
1498: $id=&make_key($name,$id);
1499: if (exists($remembered{$id})) {
1500: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1501: $accessed{$id}=[&gettimeofday()];
1502: $hits++;
1503: return ($remembered{$id},1);
1504: }
1505: my $value = $memcache->get($id);
1506: if (!(defined($value))) {
1507: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1508: return (undef,undef);
1509: }
1510: if ($value eq '__undef__') {
1511: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1512: $value=undef;
1513: }
1514: &make_room($id,$value,$debug);
1515: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1516: return ($value,1);
1517: }
1518:
1519: sub do_cache_new {
1520: my ($name,$id,$value,$time,$debug) = @_;
1521: $id=&make_key($name,$id);
1522: my $setvalue=$value;
1523: if (!defined($setvalue)) {
1524: $setvalue='__undef__';
1525: }
1526: if (!defined($time) ) {
1527: $time=600;
1528: }
1529: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1530: my $result = $memcache->set($id,$setvalue,$time);
1531: if (! $result) {
1532: &logthis("caching of id -> $id failed");
1533: $memcache->disconnect_all();
1534: }
1535: # need to make a copy of $value
1536: &make_room($id,$value,$debug);
1537: return $value;
1538: }
1539:
1540: sub make_room {
1541: my ($id,$value,$debug)=@_;
1542:
1543: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1544: : $value;
1545: if ($to_remember<0) { return; }
1546: $accessed{$id}=[&gettimeofday()];
1547: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1548: my $to_kick;
1549: my $max_time=0;
1550: foreach my $other (keys(%accessed)) {
1551: if (&tv_interval($accessed{$other}) > $max_time) {
1552: $to_kick=$other;
1553: $max_time=&tv_interval($accessed{$other});
1554: }
1555: }
1556: delete($remembered{$to_kick});
1557: delete($accessed{$to_kick});
1558: $kicks++;
1559: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1560: return;
1561: }
1562:
1563: sub purge_remembered {
1564: #&logthis("Tossing ".scalar(keys(%remembered)));
1565: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1566: undef(%remembered);
1567: undef(%accessed);
1568: }
1569: # ------------------------------------- Read an entry from a user's environment
1570:
1571: sub userenvironment {
1572: my ($udom,$unam,@what)=@_;
1573: my %returnhash=();
1574: my @answer=split(/\&/,
1575: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1576: &homeserver($unam,$udom)));
1577: my $i;
1578: for ($i=0;$i<=$#what;$i++) {
1579: $returnhash{$what[$i]}=&unescape($answer[$i]);
1580: }
1581: return %returnhash;
1582: }
1583:
1584: # ---------------------------------------------------------- Get a studentphoto
1585: sub studentphoto {
1586: my ($udom,$unam,$ext) = @_;
1587: my $home=&Apache::lonnet::homeserver($unam,$udom);
1588: if (defined($env{'request.course.id'})) {
1589: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1590: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1591: return(&retrievestudentphoto($udom,$unam,$ext));
1592: } else {
1593: my ($result,$perm_reqd)=
1594: &Apache::lonnet::auto_photo_permission($unam,$udom);
1595: if ($result eq 'ok') {
1596: if (!($perm_reqd eq 'yes')) {
1597: return(&retrievestudentphoto($udom,$unam,$ext));
1598: }
1599: }
1600: }
1601: }
1602: } else {
1603: my ($result,$perm_reqd) =
1604: &Apache::lonnet::auto_photo_permission($unam,$udom);
1605: if ($result eq 'ok') {
1606: if (!($perm_reqd eq 'yes')) {
1607: return(&retrievestudentphoto($udom,$unam,$ext));
1608: }
1609: }
1610: }
1611: return '/adm/lonKaputt/lonlogo_broken.gif';
1612: }
1613:
1614: sub retrievestudentphoto {
1615: my ($udom,$unam,$ext,$type) = @_;
1616: my $home=&Apache::lonnet::homeserver($unam,$udom);
1617: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1618: if ($ret eq 'ok') {
1619: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1620: if ($type eq 'thumbnail') {
1621: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1622: }
1623: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1624: return $tokenurl;
1625: } else {
1626: if ($type eq 'thumbnail') {
1627: return '/adm/lonKaputt/genericstudent_tn.gif';
1628: } else {
1629: return '/adm/lonKaputt/lonlogo_broken.gif';
1630: }
1631: }
1632: }
1633:
1634: # -------------------------------------------------------------------- New chat
1635:
1636: sub chatsend {
1637: my ($newentry,$anon,$group)=@_;
1638: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1639: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1640: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1641: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1642: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1643: &escape($newentry)).':'.$group,$chome);
1644: }
1645:
1646: # ------------------------------------------ Find current version of a resource
1647:
1648: sub getversion {
1649: my $fname=&clutter(shift);
1650: unless ($fname=~/^\/res\//) { return -1; }
1651: return ¤tversion(&filelocation('',$fname));
1652: }
1653:
1654: sub currentversion {
1655: my $fname=shift;
1656: my ($result,$cached)=&is_cached_new('resversion',$fname);
1657: if (defined($cached)) { return $result; }
1658: my $author=$fname;
1659: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1660: my ($udom,$uname)=split(/\//,$author);
1661: my $home=homeserver($uname,$udom);
1662: if ($home eq 'no_host') {
1663: return -1;
1664: }
1665: my $answer=reply("currentversion:$fname",$home);
1666: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1667: return -1;
1668: }
1669: return &do_cache_new('resversion',$fname,$answer,600);
1670: }
1671:
1672: # ----------------------------- Subscribe to a resource, return URL if possible
1673:
1674: sub subscribe {
1675: my $fname=shift;
1676: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1677: $fname=~s/[\n\r]//g;
1678: my $author=$fname;
1679: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1680: my ($udom,$uname)=split(/\//,$author);
1681: my $home=homeserver($uname,$udom);
1682: if ($home eq 'no_host') {
1683: return 'not_found';
1684: }
1685: my $answer=reply("sub:$fname",$home);
1686: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1687: $answer.=' by '.$home;
1688: }
1689: return $answer;
1690: }
1691:
1692: # -------------------------------------------------------------- Replicate file
1693:
1694: sub repcopy {
1695: my $filename=shift;
1696: $filename=~s/\/+/\//g;
1697: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1698: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1699: if ($filename=~m|^/home/httpd/html/userfiles/| or
1700: $filename=~m -^/*(uploaded|editupload)/-) {
1701: return &repcopy_userfile($filename);
1702: }
1703: $filename=~s/[\n\r]//g;
1704: my $transname="$filename.in.transfer";
1705: # FIXME: this should flock
1706: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1707: my $remoteurl=subscribe($filename);
1708: if ($remoteurl =~ /^con_lost by/) {
1709: &logthis("Subscribe returned $remoteurl: $filename");
1710: return 'unavailable';
1711: } elsif ($remoteurl eq 'not_found') {
1712: #&logthis("Subscribe returned not_found: $filename");
1713: return 'not_found';
1714: } elsif ($remoteurl =~ /^rejected by/) {
1715: &logthis("Subscribe returned $remoteurl: $filename");
1716: return 'forbidden';
1717: } elsif ($remoteurl eq 'directory') {
1718: return 'ok';
1719: } else {
1720: my $author=$filename;
1721: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1722: my ($udom,$uname)=split(/\//,$author);
1723: my $home=homeserver($uname,$udom);
1724: unless ($home eq $perlvar{'lonHostID'}) {
1725: my @parts=split(/\//,$filename);
1726: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1727: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1728: &logthis("Malconfiguration for replication: $filename");
1729: return 'bad_request';
1730: }
1731: my $count;
1732: for ($count=5;$count<$#parts;$count++) {
1733: $path.="/$parts[$count]";
1734: if ((-e $path)!=1) {
1735: mkdir($path,0777);
1736: }
1737: }
1738: my $ua=new LWP::UserAgent;
1739: my $request=new HTTP::Request('GET',"$remoteurl");
1740: my $response=$ua->request($request,$transname);
1741: if ($response->is_error()) {
1742: unlink($transname);
1743: my $message=$response->status_line;
1744: &logthis("<font color=\"blue\">WARNING:"
1745: ." LWP get: $message: $filename</font>");
1746: return 'unavailable';
1747: } else {
1748: if ($remoteurl!~/\.meta$/) {
1749: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1750: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1751: if ($mresponse->is_error()) {
1752: unlink($filename.'.meta');
1753: &logthis(
1754: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1755: }
1756: }
1757: rename($transname,$filename);
1758: return 'ok';
1759: }
1760: }
1761: }
1762: }
1763:
1764: # ------------------------------------------------ Get server side include body
1765: sub ssi_body {
1766: my ($filelink,%form)=@_;
1767: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1768: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1769: }
1770: my $output='';
1771: my $response;
1772: if ($filelink=~/^http\:/) {
1773: ($output,$response)=&externalssi($filelink);
1774: } else {
1775: ($output,$response)=&ssi($filelink,%form);
1776: }
1777: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1778: $output=~s/^.*?\<body[^\>]*\>//si;
1779: $output=~s/\<\/body\s*\>.*?$//si;
1780: if (wantarray) {
1781: return ($output, $response);
1782: } else {
1783: return $output;
1784: }
1785: }
1786:
1787: # --------------------------------------------------------- Server Side Include
1788:
1789: sub absolute_url {
1790: my ($host_name) = @_;
1791: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1792: if ($host_name eq '') {
1793: $host_name = $ENV{'SERVER_NAME'};
1794: }
1795: return $protocol.$host_name;
1796: }
1797:
1798: #
1799: # Server side include.
1800: # Parameters:
1801: # fn Possibly encrypted resource name/id.
1802: # form Hash that describes how the rendering should be done
1803: # and other things.
1804: # Returns:
1805: # Scalar context: The content of the response.
1806: # Array context: 2 element list of the content and the full response object.
1807: #
1808: sub ssi {
1809:
1810: my ($fn,%form)=@_;
1811: my $ua=new LWP::UserAgent;
1812: my $request;
1813:
1814: $form{'no_update_last_known'}=1;
1815: &Apache::lonenc::check_encrypt(\$fn);
1816: if (%form) {
1817: $request=new HTTP::Request('POST',&absolute_url().$fn);
1818: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1819: } else {
1820: $request=new HTTP::Request('GET',&absolute_url().$fn);
1821: }
1822:
1823: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1824: my $response=$ua->request($request);
1825:
1826: if (wantarray) {
1827: return ($response->content, $response);
1828: } else {
1829: return $response->content;
1830: }
1831: }
1832:
1833: sub externalssi {
1834: my ($url)=@_;
1835: my $ua=new LWP::UserAgent;
1836: my $request=new HTTP::Request('GET',$url);
1837: my $response=$ua->request($request);
1838: if (wantarray) {
1839: return ($response->content, $response);
1840: } else {
1841: return $response->content;
1842: }
1843: }
1844:
1845: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1846:
1847: sub allowuploaded {
1848: my ($srcurl,$url)=@_;
1849: $url=&clutter(&declutter($url));
1850: my $dir=$url;
1851: $dir=~s/\/[^\/]+$//;
1852: my %httpref=();
1853: my $httpurl=&hreflocation('',$url);
1854: $httpref{'httpref.'.$httpurl}=$srcurl;
1855: &Apache::lonnet::appenv(\%httpref);
1856: }
1857:
1858: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1859: # input: action, courseID, current domain, intended
1860: # path to file, source of file, instruction to parse file for objects,
1861: # ref to hash for embedded objects,
1862: # ref to hash for codebase of java objects.
1863: #
1864: # output: url to file (if action was uploaddoc),
1865: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1866: #
1867: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1868: # course.
1869: #
1870: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1871: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1872: # course's home server.
1873: #
1874: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1875: # be copied from $source (current location) to
1876: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1877: # and will then be copied to
1878: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1879: # course's home server.
1880: #
1881: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1882: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1883: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1884: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1885: # in course's home server.
1886: #
1887:
1888: sub process_coursefile {
1889: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1890: my $fetchresult;
1891: my $home=&homeserver($docuname,$docudom);
1892: if ($action eq 'propagate') {
1893: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1894: $home);
1895: } else {
1896: my $fpath = '';
1897: my $fname = $file;
1898: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1899: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1900: my $filepath = &build_filepath($fpath);
1901: if ($action eq 'copy') {
1902: if ($source eq '') {
1903: $fetchresult = 'no source file';
1904: return $fetchresult;
1905: } else {
1906: my $destination = $filepath.'/'.$fname;
1907: rename($source,$destination);
1908: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1909: $home);
1910: }
1911: } elsif ($action eq 'uploaddoc') {
1912: open(my $fh,'>'.$filepath.'/'.$fname);
1913: print $fh $env{'form.'.$source};
1914: close($fh);
1915: if ($parser eq 'parse') {
1916: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
1917: unless ($parse_result eq 'ok') {
1918: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1919: }
1920: }
1921: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1922: $home);
1923: if ($fetchresult eq 'ok') {
1924: return '/uploaded/'.$fpath.'/'.$fname;
1925: } else {
1926: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1927: ' to host '.$home.': '.$fetchresult);
1928: return '/adm/notfound.html';
1929: }
1930: }
1931: }
1932: unless ( $fetchresult eq 'ok') {
1933: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1934: ' to host '.$home.': '.$fetchresult);
1935: }
1936: return $fetchresult;
1937: }
1938:
1939: sub build_filepath {
1940: my ($fpath) = @_;
1941: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1942: unless ($fpath eq '') {
1943: my @parts=split('/',$fpath);
1944: foreach my $part (@parts) {
1945: $filepath.= '/'.$part;
1946: if ((-e $filepath)!=1) {
1947: mkdir($filepath,0777);
1948: }
1949: }
1950: }
1951: return $filepath;
1952: }
1953:
1954: sub store_edited_file {
1955: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1956: my $file = $primary_url;
1957: $file =~ s#^/uploaded/$docudom/$docuname/##;
1958: my $fpath = '';
1959: my $fname = $file;
1960: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1961: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1962: my $filepath = &build_filepath($fpath);
1963: open(my $fh,'>'.$filepath.'/'.$fname);
1964: print $fh $content;
1965: close($fh);
1966: my $home=&homeserver($docuname,$docudom);
1967: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1968: $home);
1969: if ($$fetchresult eq 'ok') {
1970: return '/uploaded/'.$fpath.'/'.$fname;
1971: } else {
1972: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1973: ' to host '.$home.': '.$$fetchresult);
1974: return '/adm/notfound.html';
1975: }
1976: }
1977:
1978: sub clean_filename {
1979: my ($fname,$args)=@_;
1980: # Replace Windows backslashes by forward slashes
1981: $fname=~s/\\/\//g;
1982: if (!$args->{'keep_path'}) {
1983: # Get rid of everything but the actual filename
1984: $fname=~s/^.*\/([^\/]+)$/$1/;
1985: }
1986: # Replace spaces by underscores
1987: $fname=~s/\s+/\_/g;
1988: # Replace all other weird characters by nothing
1989: $fname=~s{[^/\w\.\-]}{}g;
1990: # Replace all .\d. sequences with _\d. so they no longer look like version
1991: # numbers
1992: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1993: return $fname;
1994: }
1995:
1996: # --------------- Take an uploaded file and put it into the userfiles directory
1997: # input: $formname - the contents of the file are in $env{"form.$formname"}
1998: # the desired filenam is in $env{"form.$formname.filename"}
1999: # $coursedoc - if true up to the current course
2000: # if false
2001: # $subdir - directory in userfile to store the file into
2002: # $parser - instruction to parse file for objects ($parser = parse)
2003: # $allfiles - reference to hash for embedded objects
2004: # $codebase - reference to hash for codebase of java objects
2005: # $desuname - username for permanent storage of uploaded file
2006: # $dsetudom - domain for permanaent storage of uploaded file
2007: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2008: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2009: #
2010: # output: url of file in userspace, or error: <message>
2011: # or /adm/notfound.html if failure to upload occurse
2012:
2013:
2014: sub userfileupload {
2015: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2016: $destudom,$thumbwidth,$thumbheight)=@_;
2017: if (!defined($subdir)) { $subdir='unknown'; }
2018: my $fname=$env{'form.'.$formname.'.filename'};
2019: $fname=&clean_filename($fname);
2020: # See if there is anything left
2021: unless ($fname) { return 'error: no uploaded file'; }
2022: chop($env{'form.'.$formname});
2023: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2024: my $now = time;
2025: my $filepath = 'tmp/helprequests/'.$now;
2026: my @parts=split(/\//,$filepath);
2027: my $fullpath = $perlvar{'lonDaemons'};
2028: for (my $i=0;$i<@parts;$i++) {
2029: $fullpath .= '/'.$parts[$i];
2030: if ((-e $fullpath)!=1) {
2031: mkdir($fullpath,0777);
2032: }
2033: }
2034: open(my $fh,'>'.$fullpath.'/'.$fname);
2035: print $fh $env{'form.'.$formname};
2036: close($fh);
2037: return $fullpath.'/'.$fname;
2038: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2039: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2040: '_'.$env{'user.domain'}.'/pending';
2041: my @parts=split(/\//,$filepath);
2042: my $fullpath = $perlvar{'lonDaemons'};
2043: for (my $i=0;$i<@parts;$i++) {
2044: $fullpath .= '/'.$parts[$i];
2045: if ((-e $fullpath)!=1) {
2046: mkdir($fullpath,0777);
2047: }
2048: }
2049: open(my $fh,'>'.$fullpath.'/'.$fname);
2050: print $fh $env{'form.'.$formname};
2051: close($fh);
2052: return $fullpath.'/'.$fname;
2053: }
2054:
2055: # Create the directory if not present
2056: $fname="$subdir/$fname";
2057: if ($coursedoc) {
2058: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2059: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2060: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2061: return &finishuserfileupload($docuname,$docudom,
2062: $formname,$fname,$parser,$allfiles,
2063: $codebase,$thumbwidth,$thumbheight);
2064: } else {
2065: $fname=$env{'form.folder'}.'/'.$fname;
2066: return &process_coursefile('uploaddoc',$docuname,$docudom,
2067: $fname,$formname,$parser,
2068: $allfiles,$codebase);
2069: }
2070: } elsif (defined($destuname)) {
2071: my $docuname=$destuname;
2072: my $docudom=$destudom;
2073: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2074: $parser,$allfiles,$codebase,
2075: $thumbwidth,$thumbheight);
2076:
2077: } else {
2078: my $docuname=$env{'user.name'};
2079: my $docudom=$env{'user.domain'};
2080: if (exists($env{'form.group'})) {
2081: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2082: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2083: }
2084: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2085: $parser,$allfiles,$codebase,
2086: $thumbwidth,$thumbheight);
2087: }
2088: }
2089:
2090: sub finishuserfileupload {
2091: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2092: $thumbwidth,$thumbheight) = @_;
2093: my $path=$docudom.'/'.$docuname.'/';
2094: my $filepath=$perlvar{'lonDocRoot'};
2095: my ($fnamepath,$file,$fetchthumb);
2096: $file=$fname;
2097: if ($fname=~m|/|) {
2098: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2099: $path.=$fnamepath.'/';
2100: }
2101: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2102: my $count;
2103: for ($count=4;$count<=$#parts;$count++) {
2104: $filepath.="/$parts[$count]";
2105: if ((-e $filepath)!=1) {
2106: mkdir($filepath,0777);
2107: }
2108: }
2109: # Save the file
2110: {
2111: if (!open(FH,'>'.$filepath.'/'.$file)) {
2112: &logthis('Failed to create '.$filepath.'/'.$file);
2113: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2114: return '/adm/notfound.html';
2115: }
2116: if (!print FH ($env{'form.'.$formname})) {
2117: &logthis('Failed to write to '.$filepath.'/'.$file);
2118: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2119: return '/adm/notfound.html';
2120: }
2121: close(FH);
2122: }
2123: if ($parser eq 'parse') {
2124: my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
2125: $codebase);
2126: unless ($parse_result eq 'ok') {
2127: &logthis('Failed to parse '.$filepath.$file.
2128: ' for embedded media: '.$parse_result);
2129: }
2130: }
2131: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2132: my $input = $filepath.'/'.$file;
2133: my $output = $filepath.'/'.'tn-'.$file;
2134: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2135: system("convert -sample $thumbsize $input $output");
2136: if (-e $filepath.'/'.'tn-'.$file) {
2137: $fetchthumb = 1;
2138: }
2139: }
2140:
2141: # Notify homeserver to grep it
2142: #
2143: my $docuhome=&homeserver($docuname,$docudom);
2144: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2145: if ($fetchresult eq 'ok') {
2146: if ($fetchthumb) {
2147: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2148: if ($thumbresult ne 'ok') {
2149: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2150: $docuhome.': '.$thumbresult);
2151: }
2152: }
2153: #
2154: # Return the URL to it
2155: return '/uploaded/'.$path.$file;
2156: } else {
2157: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2158: ': '.$fetchresult);
2159: return '/adm/notfound.html';
2160: }
2161: }
2162:
2163: sub extract_embedded_items {
2164: my ($fullpath,$allfiles,$codebase,$content) = @_;
2165: my @state = ();
2166: my %javafiles = (
2167: codebase => '',
2168: code => '',
2169: archive => ''
2170: );
2171: my %mediafiles = (
2172: src => '',
2173: movie => '',
2174: );
2175: my $p;
2176: if ($content) {
2177: $p = HTML::LCParser->new($content);
2178: } else {
2179: $p = HTML::LCParser->new($fullpath);
2180: }
2181: while (my $t=$p->get_token()) {
2182: if ($t->[0] eq 'S') {
2183: my ($tagname, $attr) = ($t->[1],$t->[2]);
2184: push(@state, $tagname);
2185: if (lc($tagname) eq 'allow') {
2186: &add_filetype($allfiles,$attr->{'src'},'src');
2187: }
2188: if (lc($tagname) eq 'img') {
2189: &add_filetype($allfiles,$attr->{'src'},'src');
2190: }
2191: if (lc($tagname) eq 'a') {
2192: &add_filetype($allfiles,$attr->{'href'},'href');
2193: }
2194: if (lc($tagname) eq 'script') {
2195: if ($attr->{'archive'} =~ /\.jar$/i) {
2196: &add_filetype($allfiles,$attr->{'archive'},'archive');
2197: } else {
2198: &add_filetype($allfiles,$attr->{'src'},'src');
2199: }
2200: }
2201: if (lc($tagname) eq 'link') {
2202: if (lc($attr->{'rel'}) eq 'stylesheet') {
2203: &add_filetype($allfiles,$attr->{'href'},'href');
2204: }
2205: }
2206: if (lc($tagname) eq 'object' ||
2207: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2208: foreach my $item (keys(%javafiles)) {
2209: $javafiles{$item} = '';
2210: }
2211: }
2212: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2213: my $name = lc($attr->{'name'});
2214: foreach my $item (keys(%javafiles)) {
2215: if ($name eq $item) {
2216: $javafiles{$item} = $attr->{'value'};
2217: last;
2218: }
2219: }
2220: foreach my $item (keys(%mediafiles)) {
2221: if ($name eq $item) {
2222: &add_filetype($allfiles, $attr->{'value'}, 'value');
2223: last;
2224: }
2225: }
2226: }
2227: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2228: foreach my $item (keys(%javafiles)) {
2229: if ($attr->{$item}) {
2230: $javafiles{$item} = $attr->{$item};
2231: last;
2232: }
2233: }
2234: foreach my $item (keys(%mediafiles)) {
2235: if ($attr->{$item}) {
2236: &add_filetype($allfiles,$attr->{$item},$item);
2237: last;
2238: }
2239: }
2240: }
2241: } elsif ($t->[0] eq 'E') {
2242: my ($tagname) = ($t->[1]);
2243: if ($javafiles{'codebase'} ne '') {
2244: $javafiles{'codebase'} .= '/';
2245: }
2246: if (lc($tagname) eq 'applet' ||
2247: lc($tagname) eq 'object' ||
2248: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2249: ) {
2250: foreach my $item (keys(%javafiles)) {
2251: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2252: my $file=$javafiles{'codebase'}.$javafiles{$item};
2253: &add_filetype($allfiles,$file,$item);
2254: }
2255: }
2256: }
2257: pop @state;
2258: }
2259: }
2260: return 'ok';
2261: }
2262:
2263: sub add_filetype {
2264: my ($allfiles,$file,$type)=@_;
2265: if (exists($allfiles->{$file})) {
2266: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2267: push(@{$allfiles->{$file}}, &escape($type));
2268: }
2269: } else {
2270: @{$allfiles->{$file}} = (&escape($type));
2271: }
2272: }
2273:
2274: sub removeuploadedurl {
2275: my ($url)=@_;
2276: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2277: return &removeuserfile($uname,$udom,$fname);
2278: }
2279:
2280: sub removeuserfile {
2281: my ($docuname,$docudom,$fname)=@_;
2282: my $home=&homeserver($docuname,$docudom);
2283: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2284: if ($result eq 'ok') {
2285: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2286: my $metafile = $fname.'.meta';
2287: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2288: my $url = "/uploaded/$docudom/$docuname/$fname";
2289: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2290: my $sqlresult =
2291: &update_portfolio_table($docuname,$docudom,$file,
2292: 'portfolio_metadata',$group,
2293: 'delete');
2294: }
2295: }
2296: return $result;
2297: }
2298:
2299: sub mkdiruserfile {
2300: my ($docuname,$docudom,$dir)=@_;
2301: my $home=&homeserver($docuname,$docudom);
2302: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2303: }
2304:
2305: sub renameuserfile {
2306: my ($docuname,$docudom,$old,$new)=@_;
2307: my $home=&homeserver($docuname,$docudom);
2308: my $result = &reply("renameuserfile:$docudom:$docuname:".
2309: &escape("$old").':'.&escape("$new"),$home);
2310: if ($result eq 'ok') {
2311: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2312: my $oldmeta = $old.'.meta';
2313: my $newmeta = $new.'.meta';
2314: my $metaresult =
2315: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2316: my $url = "/uploaded/$docudom/$docuname/$old";
2317: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2318: my $sqlresult =
2319: &update_portfolio_table($docuname,$docudom,$file,
2320: 'portfolio_metadata',$group,
2321: 'delete');
2322: }
2323: }
2324: return $result;
2325: }
2326:
2327: # ------------------------------------------------------------------------- Log
2328:
2329: sub log {
2330: my ($dom,$nam,$hom,$what)=@_;
2331: return critical("log:$dom:$nam:$what",$hom);
2332: }
2333:
2334: # ------------------------------------------------------------------ Course Log
2335: #
2336: # This routine flushes several buffers of non-mission-critical nature
2337: #
2338:
2339: sub flushcourselogs {
2340: &logthis('Flushing log buffers');
2341: #
2342: # course logs
2343: # This is a log of all transactions in a course, which can be used
2344: # for data mining purposes
2345: #
2346: # It also collects the courseid database, which lists last transaction
2347: # times and course titles for all courseids
2348: #
2349: my %courseidbuffer=();
2350: foreach my $crsid (keys(%courselogs)) {
2351: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2352: &escape($courselogs{$crsid}),
2353: $coursehombuf{$crsid}) eq 'ok') {
2354: delete $courselogs{$crsid};
2355: } else {
2356: &logthis('Failed to flush log buffer for '.$crsid);
2357: if (length($courselogs{$crsid})>40000) {
2358: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2359: " exceeded maximum size, deleting.</font>");
2360: delete $courselogs{$crsid};
2361: }
2362: }
2363: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2364: 'description' => $coursedescrbuf{$crsid},
2365: 'inst_code' => $courseinstcodebuf{$crsid},
2366: 'type' => $coursetypebuf{$crsid},
2367: 'owner' => $courseownerbuf{$crsid},
2368: };
2369: }
2370: #
2371: # Write course id database (reverse lookup) to homeserver of courses
2372: # Is used in pickcourse
2373: #
2374: foreach my $crs_home (keys(%courseidbuffer)) {
2375: my $response = &courseidput(&host_domain($crs_home),
2376: $courseidbuffer{$crs_home},
2377: $crs_home,'timeonly');
2378: }
2379: #
2380: # File accesses
2381: # Writes to the dynamic metadata of resources to get hit counts, etc.
2382: #
2383: foreach my $entry (keys(%accesshash)) {
2384: if ($entry =~ /___count$/) {
2385: my ($dom,$name);
2386: ($dom,$name,undef)=
2387: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2388: if (! defined($dom) || $dom eq '' ||
2389: ! defined($name) || $name eq '') {
2390: my $cid = $env{'request.course.id'};
2391: $dom = $env{'request.'.$cid.'.domain'};
2392: $name = $env{'request.'.$cid.'.num'};
2393: }
2394: my $value = $accesshash{$entry};
2395: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2396: my %temphash=($url => $value);
2397: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2398: if ($result eq 'ok') {
2399: delete $accesshash{$entry};
2400: } elsif ($result eq 'unknown_cmd') {
2401: # Target server has old code running on it.
2402: my %temphash=($entry => $value);
2403: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2404: delete $accesshash{$entry};
2405: }
2406: }
2407: } else {
2408: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2409: my %temphash=($entry => $accesshash{$entry});
2410: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2411: delete $accesshash{$entry};
2412: }
2413: }
2414: }
2415: #
2416: # Roles
2417: # Reverse lookup of user roles for course faculty/staff and co-authorship
2418: #
2419: foreach my $entry (keys(%userrolehash)) {
2420: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2421: split(/\:/,$entry);
2422: if (&Apache::lonnet::put('nohist_userroles',
2423: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2424: $rudom,$runame) eq 'ok') {
2425: delete $userrolehash{$entry};
2426: }
2427: }
2428: #
2429: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2430: #
2431: my %domrolebuffer = ();
2432: foreach my $entry (keys %domainrolehash) {
2433: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2434: if ($domrolebuffer{$rudom}) {
2435: $domrolebuffer{$rudom}.='&'.&escape($entry).
2436: '='.&escape($domainrolehash{$entry});
2437: } else {
2438: $domrolebuffer{$rudom}.=&escape($entry).
2439: '='.&escape($domainrolehash{$entry});
2440: }
2441: delete $domainrolehash{$entry};
2442: }
2443: foreach my $dom (keys(%domrolebuffer)) {
2444: my %servers = &get_servers($dom,'library');
2445: foreach my $tryserver (keys(%servers)) {
2446: unless (&reply('domroleput:'.$dom.':'.
2447: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2448: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2449: }
2450: }
2451: }
2452: $dumpcount++;
2453: }
2454:
2455: sub courselog {
2456: my $what=shift;
2457: $what=time.':'.$what;
2458: unless ($env{'request.course.id'}) { return ''; }
2459: $coursedombuf{$env{'request.course.id'}}=
2460: $env{'course.'.$env{'request.course.id'}.'.domain'};
2461: $coursenumbuf{$env{'request.course.id'}}=
2462: $env{'course.'.$env{'request.course.id'}.'.num'};
2463: $coursehombuf{$env{'request.course.id'}}=
2464: $env{'course.'.$env{'request.course.id'}.'.home'};
2465: $coursedescrbuf{$env{'request.course.id'}}=
2466: $env{'course.'.$env{'request.course.id'}.'.description'};
2467: $courseinstcodebuf{$env{'request.course.id'}}=
2468: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2469: $courseownerbuf{$env{'request.course.id'}}=
2470: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2471: $coursetypebuf{$env{'request.course.id'}}=
2472: $env{'course.'.$env{'request.course.id'}.'.type'};
2473: if (defined $courselogs{$env{'request.course.id'}}) {
2474: $courselogs{$env{'request.course.id'}}.='&'.$what;
2475: } else {
2476: $courselogs{$env{'request.course.id'}}.=$what;
2477: }
2478: if (length($courselogs{$env{'request.course.id'}})>4048) {
2479: &flushcourselogs();
2480: }
2481: }
2482:
2483: sub courseacclog {
2484: my $fnsymb=shift;
2485: unless ($env{'request.course.id'}) { return ''; }
2486: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2487: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2488: $what.=':POST';
2489: # FIXME: Probably ought to escape things....
2490: foreach my $key (keys(%env)) {
2491: if ($key=~/^form\.(.*)/) {
2492: my $formitem = $1;
2493: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2494: $what.=':'.$formitem.'='.$env{$key};
2495: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2496: $what.=':'.$formitem.'='.$env{$key};
2497: }
2498: }
2499: }
2500: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2501: # FIXME: We should not be depending on a form parameter that someone
2502: # editing lonsearchcat.pm might change in the future.
2503: if ($env{'form.phase'} eq 'course_search') {
2504: $what.= ':POST';
2505: # FIXME: Probably ought to escape things....
2506: foreach my $element ('courseexp','crsfulltext','crsrelated',
2507: 'crsdiscuss') {
2508: $what.=':'.$element.'='.$env{'form.'.$element};
2509: }
2510: }
2511: }
2512: &courselog($what);
2513: }
2514:
2515: sub countacc {
2516: my $url=&declutter(shift);
2517: return if (! defined($url) || $url eq '');
2518: unless ($env{'request.course.id'}) { return ''; }
2519: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2520: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2521: $accesshash{$key}++;
2522: }
2523:
2524: sub linklog {
2525: my ($from,$to)=@_;
2526: $from=&declutter($from);
2527: $to=&declutter($to);
2528: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2529: $accesshash{$to.'___'.$from.'___goto'}=1;
2530: }
2531:
2532: sub userrolelog {
2533: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2534: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2535: ($trole=~/^in/) || ($trole=~/^cc/) ||
2536: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2537: ($trole=~/^ta/)) {
2538: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2539: $userrolehash
2540: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2541: =$tend.':'.$tstart;
2542: }
2543: if (($env{'request.role'} =~ /dc\./) &&
2544: (($trole=~/^au/) || ($trole=~/^in/) ||
2545: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2546: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2547: $userrolehash
2548: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2549: =$tend.':'.$tstart;
2550: }
2551: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2552: ($trole=~/^li/) || ($trole=~/^li/) ||
2553: ($trole=~/^au/) || ($trole=~/^dg/) ||
2554: ($trole=~/^sc/)) {
2555: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2556: $domainrolehash
2557: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2558: = $tend.':'.$tstart;
2559: }
2560: }
2561:
2562: sub courserolelog {
2563: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2564: if (($trole eq 'cc') || ($trole eq 'in') ||
2565: ($trole eq 'ep') || ($trole eq 'ad') ||
2566: ($trole eq 'ta') || ($trole eq 'st') ||
2567: ($trole=~/^cr/) || ($trole eq 'gr')) {
2568: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2569: my $cdom = $1;
2570: my $cnum = $2;
2571: my $sec = $3;
2572: my $namespace = 'rolelog';
2573: my %storehash = (
2574: role => $trole,
2575: start => $tstart,
2576: end => $tend,
2577: selfenroll => $selfenroll,
2578: context => $context,
2579: );
2580: if ($trole eq 'gr') {
2581: $namespace = 'groupslog';
2582: $storehash{'group'} = $sec;
2583: } else {
2584: $storehash{'section'} = $sec;
2585: }
2586: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2587: }
2588: }
2589: return;
2590: }
2591:
2592: sub get_course_adv_roles {
2593: my ($cid,$codes) = @_;
2594: $cid=$env{'request.course.id'} unless (defined($cid));
2595: my %coursehash=&coursedescription($cid);
2596: my %nothide=();
2597: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2598: if ($user !~ /:/) {
2599: $nothide{join(':',split(/[\@]/,$user))}=1;
2600: } else {
2601: $nothide{$user}=1;
2602: }
2603: }
2604: my %returnhash=();
2605: my %dumphash=
2606: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2607: my $now=time;
2608: foreach my $entry (keys %dumphash) {
2609: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2610: if (($tstart) && ($tstart<0)) { next; }
2611: if (($tend) && ($tend<$now)) { next; }
2612: if (($tstart) && ($now<$tstart)) { next; }
2613: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2614: if ($username eq '' || $domain eq '') { next; }
2615: if ((&privileged($username,$domain)) &&
2616: (!$nothide{$username.':'.$domain})) { next; }
2617: if ($role eq 'cr') { next; }
2618: if ($codes) {
2619: if ($section) { $role .= ':'.$section; }
2620: if ($returnhash{$role}) {
2621: $returnhash{$role}.=','.$username.':'.$domain;
2622: } else {
2623: $returnhash{$role}=$username.':'.$domain;
2624: }
2625: } else {
2626: my $key=&plaintext($role);
2627: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
2628: if ($returnhash{$key}) {
2629: $returnhash{$key}.=','.$username.':'.$domain;
2630: } else {
2631: $returnhash{$key}=$username.':'.$domain;
2632: }
2633: }
2634: }
2635: return %returnhash;
2636: }
2637:
2638: sub get_my_roles {
2639: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2640: unless (defined($uname)) { $uname=$env{'user.name'}; }
2641: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2642: my (%dumphash,%nothide);
2643: if ($context eq 'userroles') {
2644: %dumphash = &dump('roles',$udom,$uname);
2645: } else {
2646: %dumphash=
2647: &dump('nohist_userroles',$udom,$uname);
2648: if ($hidepriv) {
2649: my %coursehash=&coursedescription($udom.'_'.$uname);
2650: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2651: if ($user !~ /:/) {
2652: $nothide{join(':',split(/[\@]/,$user))} = 1;
2653: } else {
2654: $nothide{$user} = 1;
2655: }
2656: }
2657: }
2658: }
2659: my %returnhash=();
2660: my $now=time;
2661: foreach my $entry (keys(%dumphash)) {
2662: my ($role,$tend,$tstart);
2663: if ($context eq 'userroles') {
2664: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2665: } else {
2666: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2667: }
2668: if (($tstart) && ($tstart<0)) { next; }
2669: my $status = 'active';
2670: if (($tend) && ($tend<=$now)) {
2671: $status = 'previous';
2672: }
2673: if (($tstart) && ($now<$tstart)) {
2674: $status = 'future';
2675: }
2676: if (ref($types) eq 'ARRAY') {
2677: if (!grep(/^\Q$status\E$/,@{$types})) {
2678: next;
2679: }
2680: } else {
2681: if ($status ne 'active') {
2682: next;
2683: }
2684: }
2685: my ($rolecode,$username,$domain,$section,$area);
2686: if ($context eq 'userroles') {
2687: ($area,$rolecode) = split(/_/,$entry);
2688: (undef,$domain,$username,$section) = split(/\//,$area);
2689: } else {
2690: ($role,$username,$domain,$section) = split(/\:/,$entry);
2691: }
2692: if (ref($roledoms) eq 'ARRAY') {
2693: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2694: next;
2695: }
2696: }
2697: if (ref($roles) eq 'ARRAY') {
2698: if (!grep(/^\Q$role\E$/,@{$roles})) {
2699: if ($role =~ /^cr\//) {
2700: if (!grep(/^cr$/,@{$roles})) {
2701: next;
2702: }
2703: } else {
2704: next;
2705: }
2706: }
2707: }
2708: if ($hidepriv) {
2709: if ((&privileged($username,$domain)) &&
2710: (!$nothide{$username.':'.$domain})) {
2711: next;
2712: }
2713: }
2714: if ($withsec) {
2715: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2716: $tstart.':'.$tend;
2717: } else {
2718: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2719: }
2720: }
2721: return %returnhash;
2722: }
2723:
2724: # ----------------------------------------------------- Frontpage Announcements
2725: #
2726: #
2727:
2728: sub postannounce {
2729: my ($server,$text)=@_;
2730: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2731: unless ($text=~/\w/) { $text=''; }
2732: return &reply('setannounce:'.&escape($text),$server);
2733: }
2734:
2735: sub getannounce {
2736:
2737: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2738: my $announcement='';
2739: while (my $line = <$fh>) { $announcement .= $line; }
2740: close($fh);
2741: if ($announcement=~/\w/) {
2742: return
2743: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2744: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2745: } else {
2746: return '';
2747: }
2748: } else {
2749: return '';
2750: }
2751: }
2752:
2753: # ---------------------------------------------------------- Course ID routines
2754: # Deal with domain's nohist_courseid.db files
2755: #
2756:
2757: sub courseidput {
2758: my ($domain,$storehash,$coursehome,$caller) = @_;
2759: my $outcome;
2760: if ($caller eq 'timeonly') {
2761: my $cids = '';
2762: foreach my $item (keys(%$storehash)) {
2763: $cids.=&escape($item).'&';
2764: }
2765: $cids=~s/\&$//;
2766: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2767: $coursehome);
2768: } else {
2769: my $items = '';
2770: foreach my $item (keys(%$storehash)) {
2771: $items.= &escape($item).'='.
2772: &freeze_escape($$storehash{$item}).'&';
2773: }
2774: $items=~s/\&$//;
2775: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2776: $coursehome);
2777: }
2778: if ($outcome eq 'unknown_cmd') {
2779: my $what;
2780: foreach my $cid (keys(%$storehash)) {
2781: $what .= &escape($cid).'=';
2782: foreach my $item ('description','inst_code','owner','type') {
2783: $what .= &escape($storehash->{$cid}{$item}).':';
2784: }
2785: $what =~ s/\:$/&/;
2786: }
2787: $what =~ s/\&$//;
2788: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2789: } else {
2790: return $outcome;
2791: }
2792: }
2793:
2794: sub courseiddump {
2795: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2796: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2797: $selfenrollonly,$catfilter,$showhidden,$caller)=@_;
2798: my $as_hash = 1;
2799: my %returnhash;
2800: if (!$domfilter) { $domfilter=''; }
2801: my %libserv = &all_library();
2802: foreach my $tryserver (keys(%libserv)) {
2803: if ( ( $hostidflag == 1
2804: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2805: || (!defined($hostidflag)) ) {
2806:
2807: if (($domfilter eq '') ||
2808: (&host_domain($tryserver) eq $domfilter)) {
2809: my $rep =
2810: &reply('courseiddump:'.&host_domain($tryserver).':'.
2811: $sincefilter.':'.&escape($descfilter).':'.
2812: &escape($instcodefilter).':'.&escape($ownerfilter).
2813: ':'.&escape($coursefilter).':'.&escape($typefilter).
2814: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2815: &escape($selfenrollonly).':'.&escape($catfilter).':'.
2816: $showhidden.':'.$caller,$tryserver);
2817: my @pairs=split(/\&/,$rep);
2818: foreach my $item (@pairs) {
2819: my ($key,$value)=split(/\=/,$item,2);
2820: $key = &unescape($key);
2821: next if ($key =~ /^error: 2 /);
2822: my $result = &thaw_unescape($value);
2823: if (ref($result) eq 'HASH') {
2824: $returnhash{$key}=$result;
2825: } else {
2826: my @responses = split(/:/,$value);
2827: my @items = ('description','inst_code','owner','type');
2828: for (my $i=0; $i<@responses; $i++) {
2829: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2830: }
2831: }
2832: }
2833: }
2834: }
2835: }
2836: return %returnhash;
2837: }
2838:
2839: # ---------------------------------------------------------- DC e-mail
2840:
2841: sub dcmailput {
2842: my ($domain,$msgid,$message,$server)=@_;
2843: my $status = &Apache::lonnet::critical(
2844: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2845: &escape($message),$server);
2846: return $status;
2847: }
2848:
2849: sub dcmaildump {
2850: my ($dom,$startdate,$enddate,$senders) = @_;
2851: my %returnhash=();
2852:
2853: if (defined(&domain($dom,'primary'))) {
2854: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2855: &escape($enddate).':';
2856: my @esc_senders=map { &escape($_)} @$senders;
2857: $cmd.=&escape(join('&',@esc_senders));
2858: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2859: my ($key,$value) = split(/\=/,$line,2);
2860: if (($key) && ($value)) {
2861: $returnhash{&unescape($key)} = &unescape($value);
2862: }
2863: }
2864: }
2865: return %returnhash;
2866: }
2867: # ---------------------------------------------------------- Domain roles
2868:
2869: sub get_domain_roles {
2870: my ($dom,$roles,$startdate,$enddate)=@_;
2871: if (undef($startdate) || $startdate eq '') {
2872: $startdate = '.';
2873: }
2874: if (undef($enddate) || $enddate eq '') {
2875: $enddate = '.';
2876: }
2877: my $rolelist;
2878: if (ref($roles) eq 'ARRAY') {
2879: $rolelist = join(':',@{$roles});
2880: }
2881: my %personnel = ();
2882:
2883: my %servers = &get_servers($dom,'library');
2884: foreach my $tryserver (keys(%servers)) {
2885: %{$personnel{$tryserver}}=();
2886: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2887: &escape($startdate).':'.
2888: &escape($enddate).':'.
2889: &escape($rolelist), $tryserver))) {
2890: my ($key,$value) = split(/\=/,$line,2);
2891: if (($key) && ($value)) {
2892: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2893: }
2894: }
2895: }
2896: return %personnel;
2897: }
2898:
2899: # ----------------------------------------------------------- Check out an item
2900:
2901: sub get_first_access {
2902: my ($type,$argsymb)=@_;
2903: my ($symb,$courseid,$udom,$uname)=&whichuser();
2904: if ($argsymb) { $symb=$argsymb; }
2905: my ($map,$id,$res)=&decode_symb($symb);
2906: if ($type eq 'course') {
2907: $res='course';
2908: } elsif ($type eq 'map') {
2909: $res=&symbread($map);
2910: } else {
2911: $res=$symb;
2912: }
2913: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2914: return $times{"$courseid\0$res"};
2915: }
2916:
2917: sub set_first_access {
2918: my ($type)=@_;
2919: my ($symb,$courseid,$udom,$uname)=&whichuser();
2920: my ($map,$id,$res)=&decode_symb($symb);
2921: if ($type eq 'course') {
2922: $res='course';
2923: } elsif ($type eq 'map') {
2924: $res=&symbread($map);
2925: } else {
2926: $res=$symb;
2927: }
2928: my $firstaccess=&get_first_access($type,$symb);
2929: if (!$firstaccess) {
2930: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2931: }
2932: return 'already_set';
2933: }
2934:
2935: sub checkout {
2936: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2937: my $now=time;
2938: my $lonhost=$perlvar{'lonHostID'};
2939: my $infostr=&escape(
2940: 'CHECKOUTTOKEN&'.
2941: $tuname.'&'.
2942: $tudom.'&'.
2943: $tcrsid.'&'.
2944: $symb.'&'.
2945: $now.'&'.$ENV{'REMOTE_ADDR'});
2946: my $token=&reply('tmpput:'.$infostr,$lonhost);
2947: if ($token=~/^error\:/) {
2948: &logthis("<font color=\"blue\">WARNING: ".
2949: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2950: "</font>");
2951: return '';
2952: }
2953:
2954: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2955: $token=~tr/a-z/A-Z/;
2956:
2957: my %infohash=('resource.0.outtoken' => $token,
2958: 'resource.0.checkouttime' => $now,
2959: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2960:
2961: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2962: return '';
2963: } else {
2964: &logthis("<font color=\"blue\">WARNING: ".
2965: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2966: "</font>");
2967: }
2968:
2969: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2970: &escape('Checkout '.$infostr.' - '.
2971: $token)) ne 'ok') {
2972: return '';
2973: } else {
2974: &logthis("<font color=\"blue\">WARNING: ".
2975: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2976: "</font>");
2977: }
2978: return $token;
2979: }
2980:
2981: # ------------------------------------------------------------ Check in an item
2982:
2983: sub checkin {
2984: my $token=shift;
2985: my $now=time;
2986: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2987: $lonhost=~tr/A-Z/a-z/;
2988: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2989: $dtoken=~s/\W/\_/g;
2990: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2991: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2992:
2993: unless (($tuname) && ($tudom)) {
2994: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2995: return '';
2996: }
2997:
2998: unless (&allowed('mgr',$tcrsid)) {
2999: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3000: $env{'user.name'}.' - '.$env{'user.domain'});
3001: return '';
3002: }
3003:
3004: my %infohash=('resource.0.intoken' => $token,
3005: 'resource.0.checkintime' => $now,
3006: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3007:
3008: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3009: return '';
3010: }
3011:
3012: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3013: &escape('Checkin - '.$token)) ne 'ok') {
3014: return '';
3015: }
3016:
3017: return ($symb,$tuname,$tudom,$tcrsid);
3018: }
3019:
3020: # --------------------------------------------- Set Expire Date for Spreadsheet
3021:
3022: sub expirespread {
3023: my ($uname,$udom,$stype,$usymb)=@_;
3024: my $cid=$env{'request.course.id'};
3025: if ($cid) {
3026: my $now=time;
3027: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3028: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3029: $env{'course.'.$cid.'.num'}.
3030: ':nohist_expirationdates:'.
3031: &escape($key).'='.$now,
3032: $env{'course.'.$cid.'.home'})
3033: }
3034: return 'ok';
3035: }
3036:
3037: # ----------------------------------------------------- Devalidate Spreadsheets
3038:
3039: sub devalidate {
3040: my ($symb,$uname,$udom)=@_;
3041: my $cid=$env{'request.course.id'};
3042: if ($cid) {
3043: # delete the stored spreadsheets for
3044: # - the student level sheet of this user in course's homespace
3045: # - the assessment level sheet for this resource
3046: # for this user in user's homespace
3047: # - current conditional state info
3048: my $key=$uname.':'.$udom.':';
3049: my $status=
3050: &del('nohist_calculatedsheets',
3051: [$key.'studentcalc:'],
3052: $env{'course.'.$cid.'.domain'},
3053: $env{'course.'.$cid.'.num'})
3054: .' '.
3055: &del('nohist_calculatedsheets_'.$cid,
3056: [$key.'assesscalc:'.$symb],$udom,$uname);
3057: unless ($status eq 'ok ok') {
3058: &logthis('Could not devalidate spreadsheet '.
3059: $uname.' at '.$udom.' for '.
3060: $symb.': '.$status);
3061: }
3062: &delenv('user.state.'.$cid);
3063: }
3064: }
3065:
3066: sub get_scalar {
3067: my ($string,$end) = @_;
3068: my $value;
3069: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3070: $value = $1;
3071: } elsif ($$string =~ s/^([^&]*?)&//) {
3072: $value = $1;
3073: }
3074: return &unescape($value);
3075: }
3076:
3077: sub array2str {
3078: my (@array) = @_;
3079: my $result=&arrayref2str(\@array);
3080: $result=~s/^__ARRAY_REF__//;
3081: $result=~s/__END_ARRAY_REF__$//;
3082: return $result;
3083: }
3084:
3085: sub arrayref2str {
3086: my ($arrayref) = @_;
3087: my $result='__ARRAY_REF__';
3088: foreach my $elem (@$arrayref) {
3089: if(ref($elem) eq 'ARRAY') {
3090: $result.=&arrayref2str($elem).'&';
3091: } elsif(ref($elem) eq 'HASH') {
3092: $result.=&hashref2str($elem).'&';
3093: } elsif(ref($elem)) {
3094: #print("Got a ref of ".(ref($elem))." skipping.");
3095: } else {
3096: $result.=&escape($elem).'&';
3097: }
3098: }
3099: $result=~s/\&$//;
3100: $result .= '__END_ARRAY_REF__';
3101: return $result;
3102: }
3103:
3104: sub hash2str {
3105: my (%hash) = @_;
3106: my $result=&hashref2str(\%hash);
3107: $result=~s/^__HASH_REF__//;
3108: $result=~s/__END_HASH_REF__$//;
3109: return $result;
3110: }
3111:
3112: sub hashref2str {
3113: my ($hashref)=@_;
3114: my $result='__HASH_REF__';
3115: foreach my $key (sort(keys(%$hashref))) {
3116: if (ref($key) eq 'ARRAY') {
3117: $result.=&arrayref2str($key).'=';
3118: } elsif (ref($key) eq 'HASH') {
3119: $result.=&hashref2str($key).'=';
3120: } elsif (ref($key)) {
3121: $result.='=';
3122: #print("Got a ref of ".(ref($key))." skipping.");
3123: } else {
3124: if ($key) {$result.=&escape($key).'=';} else { last; }
3125: }
3126:
3127: if(ref($hashref->{$key}) eq 'ARRAY') {
3128: $result.=&arrayref2str($hashref->{$key}).'&';
3129: } elsif(ref($hashref->{$key}) eq 'HASH') {
3130: $result.=&hashref2str($hashref->{$key}).'&';
3131: } elsif(ref($hashref->{$key})) {
3132: $result.='&';
3133: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3134: } else {
3135: $result.=&escape($hashref->{$key}).'&';
3136: }
3137: }
3138: $result=~s/\&$//;
3139: $result .= '__END_HASH_REF__';
3140: return $result;
3141: }
3142:
3143: sub str2hash {
3144: my ($string)=@_;
3145: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3146: return %$hash;
3147: }
3148:
3149: sub str2hashref {
3150: my ($string) = @_;
3151:
3152: my %hash;
3153:
3154: if($string !~ /^__HASH_REF__/) {
3155: if (! ($string eq '' || !defined($string))) {
3156: $hash{'error'}='Not hash reference';
3157: }
3158: return (\%hash, $string);
3159: }
3160:
3161: $string =~ s/^__HASH_REF__//;
3162:
3163: while($string !~ /^__END_HASH_REF__/) {
3164: #key
3165: my $key='';
3166: if($string =~ /^__HASH_REF__/) {
3167: ($key, $string)=&str2hashref($string);
3168: if(defined($key->{'error'})) {
3169: $hash{'error'}='Bad data';
3170: return (\%hash, $string);
3171: }
3172: } elsif($string =~ /^__ARRAY_REF__/) {
3173: ($key, $string)=&str2arrayref($string);
3174: if($key->[0] eq 'Array reference error') {
3175: $hash{'error'}='Bad data';
3176: return (\%hash, $string);
3177: }
3178: } else {
3179: $string =~ s/^(.*?)=//;
3180: $key=&unescape($1);
3181: }
3182: $string =~ s/^=//;
3183:
3184: #value
3185: my $value='';
3186: if($string =~ /^__HASH_REF__/) {
3187: ($value, $string)=&str2hashref($string);
3188: if(defined($value->{'error'})) {
3189: $hash{'error'}='Bad data';
3190: return (\%hash, $string);
3191: }
3192: } elsif($string =~ /^__ARRAY_REF__/) {
3193: ($value, $string)=&str2arrayref($string);
3194: if($value->[0] eq 'Array reference error') {
3195: $hash{'error'}='Bad data';
3196: return (\%hash, $string);
3197: }
3198: } else {
3199: $value=&get_scalar(\$string,'__END_HASH_REF__');
3200: }
3201: $string =~ s/^&//;
3202:
3203: $hash{$key}=$value;
3204: }
3205:
3206: $string =~ s/^__END_HASH_REF__//;
3207:
3208: return (\%hash, $string);
3209: }
3210:
3211: sub str2array {
3212: my ($string)=@_;
3213: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3214: return @$array;
3215: }
3216:
3217: sub str2arrayref {
3218: my ($string) = @_;
3219: my @array;
3220:
3221: if($string !~ /^__ARRAY_REF__/) {
3222: if (! ($string eq '' || !defined($string))) {
3223: $array[0]='Array reference error';
3224: }
3225: return (\@array, $string);
3226: }
3227:
3228: $string =~ s/^__ARRAY_REF__//;
3229:
3230: while($string !~ /^__END_ARRAY_REF__/) {
3231: my $value='';
3232: if($string =~ /^__HASH_REF__/) {
3233: ($value, $string)=&str2hashref($string);
3234: if(defined($value->{'error'})) {
3235: $array[0] ='Array reference error';
3236: return (\@array, $string);
3237: }
3238: } elsif($string =~ /^__ARRAY_REF__/) {
3239: ($value, $string)=&str2arrayref($string);
3240: if($value->[0] eq 'Array reference error') {
3241: $array[0] ='Array reference error';
3242: return (\@array, $string);
3243: }
3244: } else {
3245: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3246: }
3247: $string =~ s/^&//;
3248:
3249: push(@array, $value);
3250: }
3251:
3252: $string =~ s/^__END_ARRAY_REF__//;
3253:
3254: return (\@array, $string);
3255: }
3256:
3257: # -------------------------------------------------------------------Temp Store
3258:
3259: sub tmpreset {
3260: my ($symb,$namespace,$domain,$stuname) = @_;
3261: if (!$symb) {
3262: $symb=&symbread();
3263: if (!$symb) { $symb= $env{'request.url'}; }
3264: }
3265: $symb=escape($symb);
3266:
3267: if (!$namespace) { $namespace=$env{'request.state'}; }
3268: $namespace=~s/\//\_/g;
3269: $namespace=~s/\W//g;
3270:
3271: if (!$domain) { $domain=$env{'user.domain'}; }
3272: if (!$stuname) { $stuname=$env{'user.name'}; }
3273: if ($domain eq 'public' && $stuname eq 'public') {
3274: $stuname=$ENV{'REMOTE_ADDR'};
3275: }
3276: my $path=$perlvar{'lonDaemons'}.'/tmp';
3277: my %hash;
3278: if (tie(%hash,'GDBM_File',
3279: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3280: &GDBM_WRCREAT(),0640)) {
3281: foreach my $key (keys %hash) {
3282: if ($key=~ /:$symb/) {
3283: delete($hash{$key});
3284: }
3285: }
3286: }
3287: }
3288:
3289: sub tmpstore {
3290: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3291:
3292: if (!$symb) {
3293: $symb=&symbread();
3294: if (!$symb) { $symb= $env{'request.url'}; }
3295: }
3296: $symb=escape($symb);
3297:
3298: if (!$namespace) {
3299: # I don't think we would ever want to store this for a course.
3300: # it seems this will only be used if we don't have a course.
3301: #$namespace=$env{'request.course.id'};
3302: #if (!$namespace) {
3303: $namespace=$env{'request.state'};
3304: #}
3305: }
3306: $namespace=~s/\//\_/g;
3307: $namespace=~s/\W//g;
3308: if (!$domain) { $domain=$env{'user.domain'}; }
3309: if (!$stuname) { $stuname=$env{'user.name'}; }
3310: if ($domain eq 'public' && $stuname eq 'public') {
3311: $stuname=$ENV{'REMOTE_ADDR'};
3312: }
3313: my $now=time;
3314: my %hash;
3315: my $path=$perlvar{'lonDaemons'}.'/tmp';
3316: if (tie(%hash,'GDBM_File',
3317: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3318: &GDBM_WRCREAT(),0640)) {
3319: $hash{"version:$symb"}++;
3320: my $version=$hash{"version:$symb"};
3321: my $allkeys='';
3322: foreach my $key (keys(%$storehash)) {
3323: $allkeys.=$key.':';
3324: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3325: }
3326: $hash{"$version:$symb:timestamp"}=$now;
3327: $allkeys.='timestamp';
3328: $hash{"$version:keys:$symb"}=$allkeys;
3329: if (untie(%hash)) {
3330: return 'ok';
3331: } else {
3332: return "error:$!";
3333: }
3334: } else {
3335: return "error:$!";
3336: }
3337: }
3338:
3339: # -----------------------------------------------------------------Temp Restore
3340:
3341: sub tmprestore {
3342: my ($symb,$namespace,$domain,$stuname) = @_;
3343:
3344: if (!$symb) {
3345: $symb=&symbread();
3346: if (!$symb) { $symb= $env{'request.url'}; }
3347: }
3348: $symb=escape($symb);
3349:
3350: if (!$namespace) { $namespace=$env{'request.state'}; }
3351:
3352: if (!$domain) { $domain=$env{'user.domain'}; }
3353: if (!$stuname) { $stuname=$env{'user.name'}; }
3354: if ($domain eq 'public' && $stuname eq 'public') {
3355: $stuname=$ENV{'REMOTE_ADDR'};
3356: }
3357: my %returnhash;
3358: $namespace=~s/\//\_/g;
3359: $namespace=~s/\W//g;
3360: my %hash;
3361: my $path=$perlvar{'lonDaemons'}.'/tmp';
3362: if (tie(%hash,'GDBM_File',
3363: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3364: &GDBM_READER(),0640)) {
3365: my $version=$hash{"version:$symb"};
3366: $returnhash{'version'}=$version;
3367: my $scope;
3368: for ($scope=1;$scope<=$version;$scope++) {
3369: my $vkeys=$hash{"$scope:keys:$symb"};
3370: my @keys=split(/:/,$vkeys);
3371: my $key;
3372: $returnhash{"$scope:keys"}=$vkeys;
3373: foreach $key (@keys) {
3374: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3375: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3376: }
3377: }
3378: if (!(untie(%hash))) {
3379: return "error:$!";
3380: }
3381: } else {
3382: return "error:$!";
3383: }
3384: return %returnhash;
3385: }
3386:
3387: # ----------------------------------------------------------------------- Store
3388:
3389: sub store {
3390: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3391: my $home='';
3392:
3393: if ($stuname) { $home=&homeserver($stuname,$domain); }
3394:
3395: $symb=&symbclean($symb);
3396: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3397:
3398: if (!$domain) { $domain=$env{'user.domain'}; }
3399: if (!$stuname) { $stuname=$env{'user.name'}; }
3400:
3401: &devalidate($symb,$stuname,$domain);
3402:
3403: $symb=escape($symb);
3404: if (!$namespace) {
3405: unless ($namespace=$env{'request.course.id'}) {
3406: return '';
3407: }
3408: }
3409: if (!$home) { $home=$env{'user.home'}; }
3410:
3411: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3412: $$storehash{'host'}=$perlvar{'lonHostID'};
3413:
3414: my $namevalue='';
3415: foreach my $key (keys(%$storehash)) {
3416: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3417: }
3418: $namevalue=~s/\&$//;
3419: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3420: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3421: }
3422:
3423: # -------------------------------------------------------------- Critical Store
3424:
3425: sub cstore {
3426: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3427: my $home='';
3428:
3429: if ($stuname) { $home=&homeserver($stuname,$domain); }
3430:
3431: $symb=&symbclean($symb);
3432: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3433:
3434: if (!$domain) { $domain=$env{'user.domain'}; }
3435: if (!$stuname) { $stuname=$env{'user.name'}; }
3436:
3437: &devalidate($symb,$stuname,$domain);
3438:
3439: $symb=escape($symb);
3440: if (!$namespace) {
3441: unless ($namespace=$env{'request.course.id'}) {
3442: return '';
3443: }
3444: }
3445: if (!$home) { $home=$env{'user.home'}; }
3446:
3447: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3448: $$storehash{'host'}=$perlvar{'lonHostID'};
3449:
3450: my $namevalue='';
3451: foreach my $key (keys(%$storehash)) {
3452: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3453: }
3454: $namevalue=~s/\&$//;
3455: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3456: return critical
3457: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3458: }
3459:
3460: # --------------------------------------------------------------------- Restore
3461:
3462: sub restore {
3463: my ($symb,$namespace,$domain,$stuname) = @_;
3464: my $home='';
3465:
3466: if ($stuname) { $home=&homeserver($stuname,$domain); }
3467:
3468: if (!$symb) {
3469: unless ($symb=escape(&symbread())) { return ''; }
3470: } else {
3471: $symb=&escape(&symbclean($symb));
3472: }
3473: if (!$namespace) {
3474: unless ($namespace=$env{'request.course.id'}) {
3475: return '';
3476: }
3477: }
3478: if (!$domain) { $domain=$env{'user.domain'}; }
3479: if (!$stuname) { $stuname=$env{'user.name'}; }
3480: if (!$home) { $home=$env{'user.home'}; }
3481: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3482:
3483: my %returnhash=();
3484: foreach my $line (split(/\&/,$answer)) {
3485: my ($name,$value)=split(/\=/,$line);
3486: $returnhash{&unescape($name)}=&thaw_unescape($value);
3487: }
3488: my $version;
3489: for ($version=1;$version<=$returnhash{'version'};$version++) {
3490: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3491: $returnhash{$item}=$returnhash{$version.':'.$item};
3492: }
3493: }
3494: return %returnhash;
3495: }
3496:
3497: # ---------------------------------------------------------- Course Description
3498:
3499: sub coursedescription {
3500: my ($courseid,$args)=@_;
3501: $courseid=~s/^\///;
3502: $courseid=~s/\_/\//g;
3503: my ($cdomain,$cnum)=split(/\//,$courseid);
3504: my $chome=&homeserver($cnum,$cdomain);
3505: my $normalid=$cdomain.'_'.$cnum;
3506: # need to always cache even if we get errors otherwise we keep
3507: # trying and trying and trying to get the course description.
3508: my %envhash=();
3509: my %returnhash=();
3510:
3511: my $expiretime=600;
3512: if ($env{'request.course.id'} eq $normalid) {
3513: $expiretime=120;
3514: }
3515:
3516: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3517: if (!$args->{'freshen_cache'}
3518: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3519: foreach my $key (keys(%env)) {
3520: next if ($key !~ /^\Q$prefix\E(.*)/);
3521: my ($setting) = $1;
3522: $returnhash{$setting} = $env{$key};
3523: }
3524: return %returnhash;
3525: }
3526:
3527: # get the data agin
3528: if (!$args->{'one_time'}) {
3529: $envhash{'course.'.$normalid.'.last_cache'}=time;
3530: }
3531:
3532: if ($chome ne 'no_host') {
3533: %returnhash=&dump('environment',$cdomain,$cnum);
3534: if (!exists($returnhash{'con_lost'})) {
3535: $returnhash{'home'}= $chome;
3536: $returnhash{'domain'} = $cdomain;
3537: $returnhash{'num'} = $cnum;
3538: if (!defined($returnhash{'type'})) {
3539: $returnhash{'type'} = 'Course';
3540: }
3541: while (my ($name,$value) = each %returnhash) {
3542: $envhash{'course.'.$normalid.'.'.$name}=$value;
3543: }
3544: $returnhash{'url'}=&clutter($returnhash{'url'});
3545: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3546: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3547: $envhash{'course.'.$normalid.'.home'}=$chome;
3548: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3549: $envhash{'course.'.$normalid.'.num'}=$cnum;
3550: }
3551: }
3552: if (!$args->{'one_time'}) {
3553: &appenv(\%envhash);
3554: }
3555: return %returnhash;
3556: }
3557:
3558: # -------------------------------------------------See if a user is privileged
3559:
3560: sub privileged {
3561: my ($username,$domain)=@_;
3562: my $rolesdump=&reply("dump:$domain:$username:roles",
3563: &homeserver($username,$domain));
3564: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3565: my $now=time;
3566: if ($rolesdump ne '') {
3567: foreach my $entry (split(/&/,$rolesdump)) {
3568: if ($entry!~/^rolesdef_/) {
3569: my ($area,$role)=split(/=/,$entry);
3570: $area=~s/\_\w\w$//;
3571: my ($trole,$tend,$tstart)=split(/_/,$role);
3572: if (($trole eq 'dc') || ($trole eq 'su')) {
3573: my $active=1;
3574: if ($tend) {
3575: if ($tend<$now) { $active=0; }
3576: }
3577: if ($tstart) {
3578: if ($tstart>$now) { $active=0; }
3579: }
3580: if ($active) { return 1; }
3581: }
3582: }
3583: }
3584: }
3585: return 0;
3586: }
3587:
3588: # -------------------------------------------------------- Get user privileges
3589:
3590: sub rolesinit {
3591: my ($domain,$username,$authhost)=@_;
3592: my %userroles;
3593: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3594: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return \%userroles; }
3595: my %allroles=();
3596: my %allgroups=();
3597: my $now=time;
3598: %userroles = ('user.login.time' => $now);
3599: my $group_privs;
3600:
3601: if ($rolesdump ne '') {
3602: foreach my $entry (split(/&/,$rolesdump)) {
3603: if ($entry!~/^rolesdef_/) {
3604: my ($area,$role)=split(/=/,$entry);
3605: $area=~s/\_\w\w$//;
3606: my ($trole,$tend,$tstart,$group_privs);
3607: if ($role=~/^cr/) {
3608: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3609: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3610: ($tend,$tstart)=split('_',$trest);
3611: } else {
3612: $trole=$role;
3613: }
3614: } elsif ($role =~ m|^gr/|) {
3615: ($trole,$tend,$tstart) = split(/_/,$role);
3616: ($trole,$group_privs) = split(/\//,$trole);
3617: $group_privs = &unescape($group_privs);
3618: } else {
3619: ($trole,$tend,$tstart)=split(/_/,$role);
3620: }
3621: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3622: $username);
3623: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3624: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3625: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3626: if (($area ne '') && ($trole ne '')) {
3627: my $spec=$trole.'.'.$area;
3628: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3629: if ($trole =~ /^cr\//) {
3630: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3631: } elsif ($trole eq 'gr') {
3632: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3633: } else {
3634: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3635: }
3636: }
3637: }
3638: }
3639: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3640: $userroles{'user.adv'} = $adv;
3641: $userroles{'user.author'} = $author;
3642: $env{'user.adv'}=$adv;
3643: }
3644: return \%userroles;
3645: }
3646:
3647: sub set_arearole {
3648: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3649: # log the associated role with the area
3650: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3651: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3652: }
3653:
3654: sub custom_roleprivs {
3655: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3656: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3657: my $homsvr=homeserver($rauthor,$rdomain);
3658: if (&hostname($homsvr) ne '') {
3659: my ($rdummy,$roledef)=
3660: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3661: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3662: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3663: if (defined($syspriv)) {
3664: $$allroles{'cm./'}.=':'.$syspriv;
3665: $$allroles{$spec.'./'}.=':'.$syspriv;
3666: }
3667: if ($tdomain ne '') {
3668: if (defined($dompriv)) {
3669: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3670: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3671: }
3672: if (($trest ne '') && (defined($coursepriv))) {
3673: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3674: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3675: }
3676: }
3677: }
3678: }
3679: }
3680:
3681: sub group_roleprivs {
3682: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3683: my $access = 1;
3684: my $now = time;
3685: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3686: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3687: if ($access) {
3688: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3689: $$allgroups{$course}{$group} .=':'.$group_privs;
3690: }
3691: }
3692:
3693: sub standard_roleprivs {
3694: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3695: if (defined($pr{$trole.':s'})) {
3696: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3697: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3698: }
3699: if ($tdomain ne '') {
3700: if (defined($pr{$trole.':d'})) {
3701: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3702: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3703: }
3704: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3705: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3706: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3707: }
3708: }
3709: }
3710:
3711: sub set_userprivs {
3712: my ($userroles,$allroles,$allgroups) = @_;
3713: my $author=0;
3714: my $adv=0;
3715: my %grouproles = ();
3716: if (keys(%{$allgroups}) > 0) {
3717: foreach my $role (keys %{$allroles}) {
3718: my ($trole,$area,$sec,$extendedarea);
3719: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3720: $trole = $1;
3721: $area = $2;
3722: $sec = $3;
3723: $extendedarea = $area.$sec;
3724: if (exists($$allgroups{$area})) {
3725: foreach my $group (keys(%{$$allgroups{$area}})) {
3726: my $spec = $trole.'.'.$extendedarea;
3727: $grouproles{$spec.'.'.$area.'/'.$group} =
3728: $$allgroups{$area}{$group};
3729: }
3730: }
3731: }
3732: }
3733: }
3734: foreach my $group (keys(%grouproles)) {
3735: $$allroles{$group} = $grouproles{$group};
3736: }
3737: foreach my $role (keys(%{$allroles})) {
3738: my %thesepriv;
3739: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3740: foreach my $item (split(/:/,$$allroles{$role})) {
3741: if ($item ne '') {
3742: my ($privilege,$restrictions)=split(/&/,$item);
3743: if ($restrictions eq '') {
3744: $thesepriv{$privilege}='F';
3745: } elsif ($thesepriv{$privilege} ne 'F') {
3746: $thesepriv{$privilege}.=$restrictions;
3747: }
3748: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3749: }
3750: }
3751: my $thesestr='';
3752: foreach my $priv (keys(%thesepriv)) {
3753: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3754: }
3755: $userroles->{'user.priv.'.$role} = $thesestr;
3756: }
3757: return ($author,$adv);
3758: }
3759:
3760: # --------------------------------------------------------------- get interface
3761:
3762: sub get {
3763: my ($namespace,$storearr,$udomain,$uname)=@_;
3764: my $items='';
3765: foreach my $item (@$storearr) {
3766: $items.=&escape($item).'&';
3767: }
3768: $items=~s/\&$//;
3769: if (!$udomain) { $udomain=$env{'user.domain'}; }
3770: if (!$uname) { $uname=$env{'user.name'}; }
3771: my $uhome=&homeserver($uname,$udomain);
3772:
3773: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3774: my @pairs=split(/\&/,$rep);
3775: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3776: return @pairs;
3777: }
3778: my %returnhash=();
3779: my $i=0;
3780: foreach my $item (@$storearr) {
3781: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3782: $i++;
3783: }
3784: return %returnhash;
3785: }
3786:
3787: # --------------------------------------------------------------- del interface
3788:
3789: sub del {
3790: my ($namespace,$storearr,$udomain,$uname)=@_;
3791: my $items='';
3792: foreach my $item (@$storearr) {
3793: $items.=&escape($item).'&';
3794: }
3795: $items=~s/\&$//;
3796: if (!$udomain) { $udomain=$env{'user.domain'}; }
3797: if (!$uname) { $uname=$env{'user.name'}; }
3798: my $uhome=&homeserver($uname,$udomain);
3799:
3800: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3801: }
3802:
3803: # -------------------------------------------------------------- dump interface
3804:
3805: sub dump {
3806: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3807: if (!$udomain) { $udomain=$env{'user.domain'}; }
3808: if (!$uname) { $uname=$env{'user.name'}; }
3809: my $uhome=&homeserver($uname,$udomain);
3810: if ($regexp) {
3811: $regexp=&escape($regexp);
3812: } else {
3813: $regexp='.';
3814: }
3815: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3816: my @pairs=split(/\&/,$rep);
3817: my %returnhash=();
3818: foreach my $item (@pairs) {
3819: my ($key,$value)=split(/=/,$item,2);
3820: $key = &unescape($key);
3821: next if ($key =~ /^error: 2 /);
3822: $returnhash{$key}=&thaw_unescape($value);
3823: }
3824: return %returnhash;
3825: }
3826:
3827: # --------------------------------------------------------- dumpstore interface
3828:
3829: sub dumpstore {
3830: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3831: if (!$udomain) { $udomain=$env{'user.domain'}; }
3832: if (!$uname) { $uname=$env{'user.name'}; }
3833: my $uhome=&homeserver($uname,$udomain);
3834: if ($regexp) {
3835: $regexp=&escape($regexp);
3836: } else {
3837: $regexp='.';
3838: }
3839: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3840: my @pairs=split(/\&/,$rep);
3841: my %returnhash=();
3842: foreach my $item (@pairs) {
3843: my ($key,$value)=split(/=/,$item,2);
3844: next if ($key =~ /^error: 2 /);
3845: $returnhash{$key}=&thaw_unescape($value);
3846: }
3847: return %returnhash;
3848: }
3849:
3850: # -------------------------------------------------------------- keys interface
3851:
3852: sub getkeys {
3853: my ($namespace,$udomain,$uname)=@_;
3854: if (!$udomain) { $udomain=$env{'user.domain'}; }
3855: if (!$uname) { $uname=$env{'user.name'}; }
3856: my $uhome=&homeserver($uname,$udomain);
3857: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3858: my @keyarray=();
3859: foreach my $key (split(/\&/,$rep)) {
3860: next if ($key =~ /^error: 2 /);
3861: push(@keyarray,&unescape($key));
3862: }
3863: return @keyarray;
3864: }
3865:
3866: # --------------------------------------------------------------- currentdump
3867: sub currentdump {
3868: my ($courseid,$sdom,$sname)=@_;
3869: $courseid = $env{'request.course.id'} if (! defined($courseid));
3870: $sdom = $env{'user.domain'} if (! defined($sdom));
3871: $sname = $env{'user.name'} if (! defined($sname));
3872: my $uhome = &homeserver($sname,$sdom);
3873: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3874: return if ($rep =~ /^(error:|no_such_host)/);
3875: #
3876: my %returnhash=();
3877: #
3878: if ($rep eq "unknown_cmd") {
3879: # an old lond will not know currentdump
3880: # Do a dump and make it look like a currentdump
3881: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3882: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3883: my %hash = @tmp;
3884: @tmp=();
3885: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3886: } else {
3887: my @pairs=split(/\&/,$rep);
3888: foreach my $pair (@pairs) {
3889: my ($key,$value)=split(/=/,$pair,2);
3890: my ($symb,$param) = split(/:/,$key);
3891: $returnhash{&unescape($symb)}->{&unescape($param)} =
3892: &thaw_unescape($value);
3893: }
3894: }
3895: return %returnhash;
3896: }
3897:
3898: sub convert_dump_to_currentdump{
3899: my %hash = %{shift()};
3900: my %returnhash;
3901: # Code ripped from lond, essentially. The only difference
3902: # here is the unescaping done by lonnet::dump(). Conceivably
3903: # we might run in to problems with parameter names =~ /^v\./
3904: while (my ($key,$value) = each(%hash)) {
3905: my ($v,$symb,$param) = split(/:/,$key);
3906: $symb = &unescape($symb);
3907: $param = &unescape($param);
3908: next if ($v eq 'version' || $symb eq 'keys');
3909: next if (exists($returnhash{$symb}) &&
3910: exists($returnhash{$symb}->{$param}) &&
3911: $returnhash{$symb}->{'v.'.$param} > $v);
3912: $returnhash{$symb}->{$param}=$value;
3913: $returnhash{$symb}->{'v.'.$param}=$v;
3914: }
3915: #
3916: # Remove all of the keys in the hashes which keep track of
3917: # the version of the parameter.
3918: while (my ($symb,$param_hash) = each(%returnhash)) {
3919: # use a foreach because we are going to delete from the hash.
3920: foreach my $key (keys(%$param_hash)) {
3921: delete($param_hash->{$key}) if ($key =~ /^v\./);
3922: }
3923: }
3924: return \%returnhash;
3925: }
3926:
3927: # ------------------------------------------------------ critical inc interface
3928:
3929: sub cinc {
3930: return &inc(@_,'critical');
3931: }
3932:
3933: # --------------------------------------------------------------- inc interface
3934:
3935: sub inc {
3936: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3937: if (!$udomain) { $udomain=$env{'user.domain'}; }
3938: if (!$uname) { $uname=$env{'user.name'}; }
3939: my $uhome=&homeserver($uname,$udomain);
3940: my $items='';
3941: if (! ref($store)) {
3942: # got a single value, so use that instead
3943: $items = &escape($store).'=&';
3944: } elsif (ref($store) eq 'SCALAR') {
3945: $items = &escape($$store).'=&';
3946: } elsif (ref($store) eq 'ARRAY') {
3947: $items = join('=&',map {&escape($_);} @{$store});
3948: } elsif (ref($store) eq 'HASH') {
3949: while (my($key,$value) = each(%{$store})) {
3950: $items.= &escape($key).'='.&escape($value).'&';
3951: }
3952: }
3953: $items=~s/\&$//;
3954: if ($critical) {
3955: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3956: } else {
3957: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3958: }
3959: }
3960:
3961: # --------------------------------------------------------------- put interface
3962:
3963: sub put {
3964: my ($namespace,$storehash,$udomain,$uname)=@_;
3965: if (!$udomain) { $udomain=$env{'user.domain'}; }
3966: if (!$uname) { $uname=$env{'user.name'}; }
3967: my $uhome=&homeserver($uname,$udomain);
3968: my $items='';
3969: foreach my $item (keys(%$storehash)) {
3970: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3971: }
3972: $items=~s/\&$//;
3973: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3974: }
3975:
3976: # ------------------------------------------------------------ newput interface
3977:
3978: sub newput {
3979: my ($namespace,$storehash,$udomain,$uname)=@_;
3980: if (!$udomain) { $udomain=$env{'user.domain'}; }
3981: if (!$uname) { $uname=$env{'user.name'}; }
3982: my $uhome=&homeserver($uname,$udomain);
3983: my $items='';
3984: foreach my $key (keys(%$storehash)) {
3985: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3986: }
3987: $items=~s/\&$//;
3988: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3989: }
3990:
3991: # --------------------------------------------------------- putstore interface
3992:
3993: sub putstore {
3994: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3995: if (!$udomain) { $udomain=$env{'user.domain'}; }
3996: if (!$uname) { $uname=$env{'user.name'}; }
3997: my $uhome=&homeserver($uname,$udomain);
3998: my $items='';
3999: foreach my $key (keys(%$storehash)) {
4000: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4001: }
4002: $items=~s/\&$//;
4003: my $esc_symb=&escape($symb);
4004: my $esc_v=&escape($version);
4005: my $reply =
4006: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4007: $uhome);
4008: if ($reply eq 'unknown_cmd') {
4009: # gfall back to way things use to be done
4010: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4011: $uname);
4012: }
4013: return $reply;
4014: }
4015:
4016: sub old_putstore {
4017: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4018: if (!$udomain) { $udomain=$env{'user.domain'}; }
4019: if (!$uname) { $uname=$env{'user.name'}; }
4020: my $uhome=&homeserver($uname,$udomain);
4021: my %newstorehash;
4022: foreach my $item (keys(%$storehash)) {
4023: my $key = $version.':'.&escape($symb).':'.$item;
4024: $newstorehash{$key} = $storehash->{$item};
4025: }
4026: my $items='';
4027: my %allitems = ();
4028: foreach my $item (keys(%newstorehash)) {
4029: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4030: my $key = $1.':keys:'.$2;
4031: $allitems{$key} .= $3.':';
4032: }
4033: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4034: }
4035: foreach my $item (keys(%allitems)) {
4036: $allitems{$item} =~ s/\:$//;
4037: $items.= $item.'='.$allitems{$item}.'&';
4038: }
4039: $items=~s/\&$//;
4040: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4041: }
4042:
4043: # ------------------------------------------------------ critical put interface
4044:
4045: sub cput {
4046: my ($namespace,$storehash,$udomain,$uname)=@_;
4047: if (!$udomain) { $udomain=$env{'user.domain'}; }
4048: if (!$uname) { $uname=$env{'user.name'}; }
4049: my $uhome=&homeserver($uname,$udomain);
4050: my $items='';
4051: foreach my $item (keys(%$storehash)) {
4052: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4053: }
4054: $items=~s/\&$//;
4055: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4056: }
4057:
4058: # -------------------------------------------------------------- eget interface
4059:
4060: sub eget {
4061: my ($namespace,$storearr,$udomain,$uname)=@_;
4062: my $items='';
4063: foreach my $item (@$storearr) {
4064: $items.=&escape($item).'&';
4065: }
4066: $items=~s/\&$//;
4067: if (!$udomain) { $udomain=$env{'user.domain'}; }
4068: if (!$uname) { $uname=$env{'user.name'}; }
4069: my $uhome=&homeserver($uname,$udomain);
4070: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4071: my @pairs=split(/\&/,$rep);
4072: my %returnhash=();
4073: my $i=0;
4074: foreach my $item (@$storearr) {
4075: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4076: $i++;
4077: }
4078: return %returnhash;
4079: }
4080:
4081: # ------------------------------------------------------------ tmpput interface
4082: sub tmpput {
4083: my ($storehash,$server,$context)=@_;
4084: my $items='';
4085: foreach my $item (keys(%$storehash)) {
4086: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4087: }
4088: $items=~s/\&$//;
4089: if (defined($context)) {
4090: $items .= ':'.&escape($context);
4091: }
4092: return &reply("tmpput:$items",$server);
4093: }
4094:
4095: # ------------------------------------------------------------ tmpget interface
4096: sub tmpget {
4097: my ($token,$server)=@_;
4098: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4099: my $rep=&reply("tmpget:$token",$server);
4100: my %returnhash;
4101: foreach my $item (split(/\&/,$rep)) {
4102: my ($key,$value)=split(/=/,$item);
4103: next if ($key =~ /^error: 2 /);
4104: $returnhash{&unescape($key)}=&thaw_unescape($value);
4105: }
4106: return %returnhash;
4107: }
4108:
4109: # ------------------------------------------------------------ tmpget interface
4110: sub tmpdel {
4111: my ($token,$server)=@_;
4112: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4113: return &reply("tmpdel:$token",$server);
4114: }
4115:
4116: # -------------------------------------------------- portfolio access checking
4117:
4118: sub portfolio_access {
4119: my ($requrl) = @_;
4120: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4121: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4122: if ($result) {
4123: my %setters;
4124: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4125: my ($startblock,$endblock) =
4126: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4127: if ($startblock && $endblock) {
4128: return 'B';
4129: }
4130: } else {
4131: my ($startblock,$endblock) =
4132: &Apache::loncommon::blockcheck(\%setters,'port');
4133: if ($startblock && $endblock) {
4134: return 'B';
4135: }
4136: }
4137: }
4138: if ($result eq 'ok') {
4139: return 'F';
4140: } elsif ($result =~ /^[^:]+:guest_/) {
4141: return 'A';
4142: }
4143: return '';
4144: }
4145:
4146: sub get_portfolio_access {
4147: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4148:
4149: if (!ref($access_hash)) {
4150: my $current_perms = &get_portfile_permissions($udom,$unum);
4151: my %access_controls = &get_access_controls($current_perms,$group,
4152: $file_name);
4153: $access_hash = $access_controls{$file_name};
4154: }
4155:
4156: my ($public,$guest,@domains,@users,@courses,@groups);
4157: my $now = time;
4158: if (ref($access_hash) eq 'HASH') {
4159: foreach my $key (keys(%{$access_hash})) {
4160: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4161: if ($start > $now) {
4162: next;
4163: }
4164: if ($end && $end<$now) {
4165: next;
4166: }
4167: if ($scope eq 'public') {
4168: $public = $key;
4169: last;
4170: } elsif ($scope eq 'guest') {
4171: $guest = $key;
4172: } elsif ($scope eq 'domains') {
4173: push(@domains,$key);
4174: } elsif ($scope eq 'users') {
4175: push(@users,$key);
4176: } elsif ($scope eq 'course') {
4177: push(@courses,$key);
4178: } elsif ($scope eq 'group') {
4179: push(@groups,$key);
4180: }
4181: }
4182: if ($public) {
4183: return 'ok';
4184: }
4185: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4186: if ($guest) {
4187: return $guest;
4188: }
4189: } else {
4190: if (@domains > 0) {
4191: foreach my $domkey (@domains) {
4192: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4193: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4194: return 'ok';
4195: }
4196: }
4197: }
4198: }
4199: if (@users > 0) {
4200: foreach my $userkey (@users) {
4201: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4202: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4203: if (ref($item) eq 'HASH') {
4204: if (($item->{'uname'} eq $env{'user.name'}) &&
4205: ($item->{'udom'} eq $env{'user.domain'})) {
4206: return 'ok';
4207: }
4208: }
4209: }
4210: }
4211: }
4212: }
4213: my %roleshash;
4214: my @courses_and_groups = @courses;
4215: push(@courses_and_groups,@groups);
4216: if (@courses_and_groups > 0) {
4217: my (%allgroups,%allroles);
4218: my ($start,$end,$role,$sec,$group);
4219: foreach my $envkey (%env) {
4220: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4221: my $cid = $2.'_'.$3;
4222: if ($1 eq 'gr') {
4223: $group = $4;
4224: $allgroups{$cid}{$group} = $env{$envkey};
4225: } else {
4226: if ($4 eq '') {
4227: $sec = 'none';
4228: } else {
4229: $sec = $4;
4230: }
4231: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4232: }
4233: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4234: my $cid = $2.'_'.$3;
4235: if ($4 eq '') {
4236: $sec = 'none';
4237: } else {
4238: $sec = $4;
4239: }
4240: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4241: }
4242: }
4243: if (keys(%allroles) == 0) {
4244: return;
4245: }
4246: foreach my $key (@courses_and_groups) {
4247: my %content = %{$$access_hash{$key}};
4248: my $cnum = $content{'number'};
4249: my $cdom = $content{'domain'};
4250: my $cid = $cdom.'_'.$cnum;
4251: if (!exists($allroles{$cid})) {
4252: next;
4253: }
4254: foreach my $role_id (keys(%{$content{'roles'}})) {
4255: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4256: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4257: my @status = @{$content{'roles'}{$role_id}{'access'}};
4258: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4259: foreach my $role (keys(%{$allroles{$cid}})) {
4260: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4261: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4262: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4263: if (grep/^all$/,@sections) {
4264: return 'ok';
4265: } else {
4266: if (grep/^$sec$/,@sections) {
4267: return 'ok';
4268: }
4269: }
4270: }
4271: }
4272: if (keys(%{$allgroups{$cid}}) == 0) {
4273: if (grep/^none$/,@groups) {
4274: return 'ok';
4275: }
4276: } else {
4277: if (grep/^all$/,@groups) {
4278: return 'ok';
4279: }
4280: foreach my $group (keys(%{$allgroups{$cid}})) {
4281: if (grep/^$group$/,@groups) {
4282: return 'ok';
4283: }
4284: }
4285: }
4286: }
4287: }
4288: }
4289: }
4290: }
4291: if ($guest) {
4292: return $guest;
4293: }
4294: }
4295: }
4296: return;
4297: }
4298:
4299: sub course_group_datechecker {
4300: my ($dates,$now,$status) = @_;
4301: my ($start,$end) = split(/\./,$dates);
4302: if (!$start && !$end) {
4303: return 'ok';
4304: }
4305: if (grep/^active$/,@{$status}) {
4306: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4307: return 'ok';
4308: }
4309: }
4310: if (grep/^previous$/,@{$status}) {
4311: if ($end > $now ) {
4312: return 'ok';
4313: }
4314: }
4315: if (grep/^future$/,@{$status}) {
4316: if ($start > $now) {
4317: return 'ok';
4318: }
4319: }
4320: return;
4321: }
4322:
4323: sub parse_portfolio_url {
4324: my ($url) = @_;
4325:
4326: my ($type,$udom,$unum,$group,$file_name);
4327:
4328: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4329: $type = 1;
4330: $udom = $1;
4331: $unum = $2;
4332: $file_name = $3;
4333: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4334: $type = 2;
4335: $udom = $1;
4336: $unum = $2;
4337: $group = $3;
4338: $file_name = $3.'/'.$4;
4339: }
4340: if (wantarray) {
4341: return ($type,$udom,$unum,$file_name,$group);
4342: }
4343: return $type;
4344: }
4345:
4346: sub is_portfolio_url {
4347: my ($url) = @_;
4348: return scalar(&parse_portfolio_url($url));
4349: }
4350:
4351: sub is_portfolio_file {
4352: my ($file) = @_;
4353: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4354: return 1;
4355: }
4356: return;
4357: }
4358:
4359:
4360: # ---------------------------------------------- Custom access rule evaluation
4361:
4362: sub customaccess {
4363: my ($priv,$uri)=@_;
4364: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4365: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4366: $udom = &LONCAPA::clean_domain($udom);
4367: $ucrs = &LONCAPA::clean_username($ucrs);
4368: my $access=0;
4369: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4370: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4371: if ($type eq 'user') {
4372: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4373: my ($tdom,$tuname)=split(m{/},$scope);
4374: if ($tdom) {
4375: if ($tdom ne $env{'user.domain'}) { next; }
4376: }
4377: if ($tuname) {
4378: if ($tuname ne $env{'user.name'}) { next; }
4379: }
4380: $access=($effect eq 'allow');
4381: last;
4382: }
4383: } else {
4384: if ($role) {
4385: if ($role ne $urole) { next; }
4386: }
4387: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4388: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4389: if ($tdom) {
4390: if ($tdom ne $udom) { next; }
4391: }
4392: if ($tcrs) {
4393: if ($tcrs ne $ucrs) { next; }
4394: }
4395: if ($tsec) {
4396: if ($tsec ne $usec) { next; }
4397: }
4398: $access=($effect eq 'allow');
4399: last;
4400: }
4401: if ($realm eq '' && $role eq '') {
4402: $access=($effect eq 'allow');
4403: }
4404: }
4405: }
4406: return $access;
4407: }
4408:
4409: # ------------------------------------------------- Check for a user privilege
4410:
4411: sub allowed {
4412: my ($priv,$uri,$symb,$role)=@_;
4413: my $ver_orguri=$uri;
4414: $uri=&deversion($uri);
4415: my $orguri=$uri;
4416: $uri=&declutter($uri);
4417:
4418: if ($priv eq 'evb') {
4419: # Evade communication block restrictions for specified role in a course
4420: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4421: return $1;
4422: } else {
4423: return;
4424: }
4425: }
4426:
4427: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4428: # Free bre access to adm and meta resources
4429: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4430: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4431: && ($priv eq 'bre')) {
4432: return 'F';
4433: }
4434:
4435: # Free bre access to user's own portfolio contents
4436: my ($space,$domain,$name,@dir)=split('/',$uri);
4437: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4438: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4439: my %setters;
4440: my ($startblock,$endblock) =
4441: &Apache::loncommon::blockcheck(\%setters,'port');
4442: if ($startblock && $endblock) {
4443: return 'B';
4444: } else {
4445: return 'F';
4446: }
4447: }
4448:
4449: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4450: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4451: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4452: if (exists($env{'request.course.id'})) {
4453: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4454: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4455: if (($domain eq $cdom) && ($name eq $cnum)) {
4456: my $courseprivid=$env{'request.course.id'};
4457: $courseprivid=~s/\_/\//;
4458: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4459: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4460: return $1;
4461: } else {
4462: if ($env{'request.course.sec'}) {
4463: $courseprivid.='/'.$env{'request.course.sec'};
4464: }
4465: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4466: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4467: return $2;
4468: }
4469: }
4470: }
4471: }
4472: }
4473:
4474: # Free bre to public access
4475:
4476: if ($priv eq 'bre') {
4477: my $copyright=&metadata($uri,'copyright');
4478: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4479: return 'F';
4480: }
4481: if ($copyright eq 'priv') {
4482: $uri=~/([^\/]+)\/([^\/]+)\//;
4483: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4484: return '';
4485: }
4486: }
4487: if ($copyright eq 'domain') {
4488: $uri=~/([^\/]+)\/([^\/]+)\//;
4489: unless (($env{'user.domain'} eq $1) ||
4490: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4491: return '';
4492: }
4493: }
4494: if ($env{'request.role'}=~ /li\.\//) {
4495: # Library role, so allow browsing of resources in this domain.
4496: return 'F';
4497: }
4498: if ($copyright eq 'custom') {
4499: unless (&customaccess($priv,$uri)) { return ''; }
4500: }
4501: }
4502: # Domain coordinator is trying to create a course
4503: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4504: # uri is the requested domain in this case.
4505: # comparison to 'request.role.domain' shows if the user has selected
4506: # a role of dc for the domain in question.
4507: return 'F' if ($uri eq $env{'request.role.domain'});
4508: }
4509:
4510: my $thisallowed='';
4511: my $statecond=0;
4512: my $courseprivid='';
4513:
4514: # Course
4515:
4516: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4517: $thisallowed.=$1;
4518: }
4519:
4520: # Domain
4521:
4522: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4523: =~/\Q$priv\E\&([^\:]*)/) {
4524: $thisallowed.=$1;
4525: }
4526:
4527: # Course: uri itself is a course
4528: my $courseuri=$uri;
4529: $courseuri=~s/\_(\d)/\/$1/;
4530: $courseuri=~s/^([^\/])/\/$1/;
4531:
4532: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4533: =~/\Q$priv\E\&([^\:]*)/) {
4534: $thisallowed.=$1;
4535: }
4536:
4537: # URI is an uploaded document for this course, default permissions don't matter
4538: # not allowing 'edit' access (editupload) to uploaded course docs
4539: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4540: $thisallowed='';
4541: my ($match)=&is_on_map($uri);
4542: if ($match) {
4543: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4544: =~/\Q$priv\E\&([^\:]*)/) {
4545: $thisallowed.=$1;
4546: }
4547: } else {
4548: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4549: if ($refuri) {
4550: if ($refuri =~ m|^/adm/|) {
4551: $thisallowed='F';
4552: } else {
4553: $refuri=&declutter($refuri);
4554: my ($match) = &is_on_map($refuri);
4555: if ($match) {
4556: $thisallowed='F';
4557: }
4558: }
4559: }
4560: }
4561: }
4562:
4563: if ($priv eq 'bre'
4564: && $thisallowed ne 'F'
4565: && $thisallowed ne '2'
4566: && &is_portfolio_url($uri)) {
4567: $thisallowed = &portfolio_access($uri);
4568: }
4569:
4570: # Full access at system, domain or course-wide level? Exit.
4571: if ($thisallowed=~/F/) {
4572: return 'F';
4573: }
4574:
4575: # If this is generating or modifying users, exit with special codes
4576:
4577: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4578: if (($priv eq 'cca') || ($priv eq 'caa')) {
4579: my ($audom,$auname)=split('/',$uri);
4580: # no author name given, so this just checks on the general right to make a co-author in this domain
4581: unless ($auname) { return $thisallowed; }
4582: # an author name is given, so we are about to actually make a co-author for a certain account
4583: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4584: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4585: ($audom ne $env{'request.role.domain'}))) { return ''; }
4586: }
4587: return $thisallowed;
4588: }
4589: #
4590: # Gathered so far: system, domain and course wide privileges
4591: #
4592: # Course: See if uri or referer is an individual resource that is part of
4593: # the course
4594:
4595: if ($env{'request.course.id'}) {
4596:
4597: $courseprivid=$env{'request.course.id'};
4598: if ($env{'request.course.sec'}) {
4599: $courseprivid.='/'.$env{'request.course.sec'};
4600: }
4601: $courseprivid=~s/\_/\//;
4602: my $checkreferer=1;
4603: my ($match,$cond)=&is_on_map($uri);
4604: if ($match) {
4605: $statecond=$cond;
4606: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4607: =~/\Q$priv\E\&([^\:]*)/) {
4608: $thisallowed.=$1;
4609: $checkreferer=0;
4610: }
4611: }
4612:
4613: if ($checkreferer) {
4614: my $refuri=$env{'httpref.'.$orguri};
4615: unless ($refuri) {
4616: foreach my $key (keys(%env)) {
4617: if ($key=~/^httpref\..*\*/) {
4618: my $pattern=$key;
4619: $pattern=~s/^httpref\.\/res\///;
4620: $pattern=~s/\*/\[\^\/\]\+/g;
4621: $pattern=~s/\//\\\//g;
4622: if ($orguri=~/$pattern/) {
4623: $refuri=$env{$key};
4624: }
4625: }
4626: }
4627: }
4628:
4629: if ($refuri) {
4630: $refuri=&declutter($refuri);
4631: my ($match,$cond)=&is_on_map($refuri);
4632: if ($match) {
4633: my $refstatecond=$cond;
4634: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4635: =~/\Q$priv\E\&([^\:]*)/) {
4636: $thisallowed.=$1;
4637: $uri=$refuri;
4638: $statecond=$refstatecond;
4639: }
4640: }
4641: }
4642: }
4643: }
4644:
4645: #
4646: # Gathered now: all privileges that could apply, and condition number
4647: #
4648: #
4649: # Full or no access?
4650: #
4651:
4652: if ($thisallowed=~/F/) {
4653: return 'F';
4654: }
4655:
4656: unless ($thisallowed) {
4657: return '';
4658: }
4659:
4660: # Restrictions exist, deal with them
4661: #
4662: # C:according to course preferences
4663: # R:according to resource settings
4664: # L:unless locked
4665: # X:according to user session state
4666: #
4667:
4668: # Possibly locked functionality, check all courses
4669: # Locks might take effect only after 10 minutes cache expiration for other
4670: # courses, and 2 minutes for current course
4671:
4672: my $envkey;
4673: if ($thisallowed=~/L/) {
4674: foreach $envkey (keys %env) {
4675: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4676: my $courseid=$2;
4677: my $roleid=$1.'.'.$2;
4678: $courseid=~s/^\///;
4679: my $expiretime=600;
4680: if ($env{'request.role'} eq $roleid) {
4681: $expiretime=120;
4682: }
4683: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4684: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4685: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4686: &coursedescription($courseid,{'freshen_cache' => 1});
4687: }
4688: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4689: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4690: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4691: &log($env{'user.domain'},$env{'user.name'},
4692: $env{'user.home'},
4693: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4694: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4695: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4696: return '';
4697: }
4698: }
4699: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4700: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4701: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4702: &log($env{'user.domain'},$env{'user.name'},
4703: $env{'user.home'},
4704: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4705: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4706: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4707: return '';
4708: }
4709: }
4710: }
4711: }
4712: }
4713:
4714: #
4715: # Rest of the restrictions depend on selected course
4716: #
4717:
4718: unless ($env{'request.course.id'}) {
4719: if ($thisallowed eq 'A') {
4720: return 'A';
4721: } elsif ($thisallowed eq 'B') {
4722: return 'B';
4723: } else {
4724: return '1';
4725: }
4726: }
4727:
4728: #
4729: # Now user is definitely in a course
4730: #
4731:
4732:
4733: # Course preferences
4734:
4735: if ($thisallowed=~/C/) {
4736: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4737: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4738: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4739: =~/\Q$rolecode\E/) {
4740: if ($priv ne 'pch') {
4741: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4742: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4743: $env{'request.course.id'});
4744: }
4745: return '';
4746: }
4747:
4748: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4749: =~/\Q$unamedom\E/) {
4750: if ($priv ne 'pch') {
4751: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4752: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4753: $env{'request.course.id'});
4754: }
4755: return '';
4756: }
4757: }
4758:
4759: # Resource preferences
4760:
4761: if ($thisallowed=~/R/) {
4762: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4763: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4764: if ($priv ne 'pch') {
4765: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4766: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4767: }
4768: return '';
4769: }
4770: }
4771:
4772: # Restricted by state or randomout?
4773:
4774: if ($thisallowed=~/X/) {
4775: if ($env{'acc.randomout'}) {
4776: if (!$symb) { $symb=&symbread($uri,1); }
4777: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4778: return '';
4779: }
4780: }
4781: if (&condval($statecond)) {
4782: return '2';
4783: } else {
4784: return '';
4785: }
4786: }
4787:
4788: if ($thisallowed eq 'A') {
4789: return 'A';
4790: } elsif ($thisallowed eq 'B') {
4791: return 'B';
4792: }
4793: return 'F';
4794: }
4795:
4796: sub split_uri_for_cond {
4797: my $uri=&deversion(&declutter(shift));
4798: my @uriparts=split(/\//,$uri);
4799: my $filename=pop(@uriparts);
4800: my $pathname=join('/',@uriparts);
4801: return ($pathname,$filename);
4802: }
4803: # --------------------------------------------------- Is a resource on the map?
4804:
4805: sub is_on_map {
4806: my ($pathname,$filename) = &split_uri_for_cond(shift);
4807: #Trying to find the conditional for the file
4808: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4809: /\&\Q$filename\E\:([\d\|]+)\&/);
4810: if ($match) {
4811: return (1,$1);
4812: } else {
4813: return (0,0);
4814: }
4815: }
4816:
4817: # --------------------------------------------------------- Get symb from alias
4818:
4819: sub get_symb_from_alias {
4820: my $symb=shift;
4821: my ($map,$resid,$url)=&decode_symb($symb);
4822: # Already is a symb
4823: if ($url) { return $symb; }
4824: # Must be an alias
4825: my $aliassymb='';
4826: my %bighash;
4827: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4828: &GDBM_READER(),0640)) {
4829: my $rid=$bighash{'mapalias_'.$symb};
4830: if ($rid) {
4831: my ($mapid,$resid)=split(/\./,$rid);
4832: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4833: $resid,$bighash{'src_'.$rid});
4834: }
4835: untie %bighash;
4836: }
4837: return $aliassymb;
4838: }
4839:
4840: # ----------------------------------------------------------------- Define Role
4841:
4842: sub definerole {
4843: if (allowed('mcr','/')) {
4844: my ($rolename,$sysrole,$domrole,$courole)=@_;
4845: foreach my $role (split(':',$sysrole)) {
4846: my ($crole,$cqual)=split(/\&/,$role);
4847: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4848: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4849: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4850: return "refused:s:$crole&$cqual";
4851: }
4852: }
4853: }
4854: foreach my $role (split(':',$domrole)) {
4855: my ($crole,$cqual)=split(/\&/,$role);
4856: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4857: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4858: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4859: return "refused:d:$crole&$cqual";
4860: }
4861: }
4862: }
4863: foreach my $role (split(':',$courole)) {
4864: my ($crole,$cqual)=split(/\&/,$role);
4865: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4866: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4867: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4868: return "refused:c:$crole&$cqual";
4869: }
4870: }
4871: }
4872: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4873: "$env{'user.domain'}:$env{'user.name'}:".
4874: "rolesdef_$rolename=".
4875: escape($sysrole.'_'.$domrole.'_'.$courole);
4876: return reply($command,$env{'user.home'});
4877: } else {
4878: return 'refused';
4879: }
4880: }
4881:
4882: # ---------------- Make a metadata query against the network of library servers
4883:
4884: sub metadata_query {
4885: my ($query,$custom,$customshow,$server_array)=@_;
4886: my %rhash;
4887: my %libserv = &all_library();
4888: my @server_list = (defined($server_array) ? @$server_array
4889: : keys(%libserv) );
4890: for my $server (@server_list) {
4891: unless ($custom or $customshow) {
4892: my $reply=&reply("querysend:".&escape($query),$server);
4893: $rhash{$server}=$reply;
4894: }
4895: else {
4896: my $reply=&reply("querysend:".&escape($query).':'.
4897: &escape($custom).':'.&escape($customshow),
4898: $server);
4899: $rhash{$server}=$reply;
4900: }
4901: }
4902: return \%rhash;
4903: }
4904:
4905: # ----------------------------------------- Send log queries and wait for reply
4906:
4907: sub log_query {
4908: my ($uname,$udom,$query,%filters)=@_;
4909: my $uhome=&homeserver($uname,$udom);
4910: if ($uhome eq 'no_host') { return 'error: no_host'; }
4911: my $uhost=&hostname($uhome);
4912: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4913: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4914: $uhome);
4915: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4916: return get_query_reply($queryid);
4917: }
4918:
4919: # -------------------------- Update MySQL table for portfolio file
4920:
4921: sub update_portfolio_table {
4922: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4923: if ($group ne '') {
4924: $file_name =~s /^\Q$group\E//;
4925: }
4926: my $homeserver = &homeserver($uname,$udom);
4927: my $queryid=
4928: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4929: ':'.&escape($file_name).':'.$action,$homeserver);
4930: my $reply = &get_query_reply($queryid);
4931: return $reply;
4932: }
4933:
4934: # -------------------------- Update MySQL allusers table
4935:
4936: sub update_allusers_table {
4937: my ($uname,$udom,$names) = @_;
4938: my $homeserver = &homeserver($uname,$udom);
4939: my $queryid=
4940: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4941: 'lastname='.&escape($names->{'lastname'}).'%%'.
4942: 'firstname='.&escape($names->{'firstname'}).'%%'.
4943: 'middlename='.&escape($names->{'middlename'}).'%%'.
4944: 'generation='.&escape($names->{'generation'}).'%%'.
4945: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4946: 'id='.&escape($names->{'id'}),$homeserver);
4947: my $reply = &get_query_reply($queryid);
4948: return $reply;
4949: }
4950:
4951: # ------- Request retrieval of institutional classlists for course(s)
4952:
4953: sub fetch_enrollment_query {
4954: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4955: my $homeserver;
4956: my $maxtries = 1;
4957: if ($context eq 'automated') {
4958: $homeserver = $perlvar{'lonHostID'};
4959: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4960: } else {
4961: $homeserver = &homeserver($cnum,$dom);
4962: }
4963: my $host=&hostname($homeserver);
4964: my $cmd = '';
4965: foreach my $affiliate (keys %{$affiliatesref}) {
4966: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4967: }
4968: $cmd =~ s/%%$//;
4969: $cmd = &escape($cmd);
4970: my $query = 'fetchenrollment';
4971: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4972: unless ($queryid=~/^\Q$host\E\_/) {
4973: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4974: return 'error: '.$queryid;
4975: }
4976: my $reply = &get_query_reply($queryid);
4977: my $tries = 1;
4978: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4979: $reply = &get_query_reply($queryid);
4980: $tries ++;
4981: }
4982: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4983: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4984: } else {
4985: my @responses = split(/:/,$reply);
4986: if ($homeserver eq $perlvar{'lonHostID'}) {
4987: foreach my $line (@responses) {
4988: my ($key,$value) = split(/=/,$line,2);
4989: $$replyref{$key} = $value;
4990: }
4991: } else {
4992: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4993: foreach my $line (@responses) {
4994: my ($key,$value) = split(/=/,$line);
4995: $$replyref{$key} = $value;
4996: if ($value > 0) {
4997: foreach my $item (@{$$affiliatesref{$key}}) {
4998: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4999: my $destname = $pathname.'/'.$filename;
5000: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5001: if ($xml_classlist =~ /^error/) {
5002: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5003: } else {
5004: if ( open(FILE,">$destname") ) {
5005: print FILE &unescape($xml_classlist);
5006: close(FILE);
5007: } else {
5008: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5009: }
5010: }
5011: }
5012: }
5013: }
5014: }
5015: return 'ok';
5016: }
5017: return 'error';
5018: }
5019:
5020: sub get_query_reply {
5021: my $queryid=shift;
5022: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5023: my $reply='';
5024: for (1..100) {
5025: sleep 2;
5026: if (-e $replyfile.'.end') {
5027: if (open(my $fh,$replyfile)) {
5028: $reply = join('',<$fh>);
5029: close($fh);
5030: } else { return 'error: reply_file_error'; }
5031: return &unescape($reply);
5032: }
5033: }
5034: return 'timeout:'.$queryid;
5035: }
5036:
5037: sub courselog_query {
5038: #
5039: # possible filters:
5040: # url: url or symb
5041: # username
5042: # domain
5043: # action: view, submit, grade
5044: # start: timestamp
5045: # end: timestamp
5046: #
5047: my (%filters)=@_;
5048: unless ($env{'request.course.id'}) { return 'no_course'; }
5049: if ($filters{'url'}) {
5050: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5051: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5052: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5053: }
5054: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5055: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5056: return &log_query($cname,$cdom,'courselog',%filters);
5057: }
5058:
5059: sub userlog_query {
5060: #
5061: # possible filters:
5062: # action: log check role
5063: # start: timestamp
5064: # end: timestamp
5065: #
5066: my ($uname,$udom,%filters)=@_;
5067: return &log_query($uname,$udom,'userlog',%filters);
5068: }
5069:
5070: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5071:
5072: sub auto_run {
5073: my ($cnum,$cdom) = @_;
5074: my $response = 0;
5075: my $settings;
5076: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5077: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5078: $settings = $domconfig{'autoenroll'};
5079: if ($settings->{'run'} eq '1') {
5080: $response = 1;
5081: }
5082: } else {
5083: my $homeserver;
5084: if (&is_course($cdom,$cnum)) {
5085: $homeserver = &homeserver($cnum,$cdom);
5086: } else {
5087: $homeserver = &domain($cdom,'primary');
5088: }
5089: if ($homeserver ne 'no_host') {
5090: $response = &reply('autorun:'.$cdom,$homeserver);
5091: }
5092: }
5093: return $response;
5094: }
5095:
5096: sub auto_get_sections {
5097: my ($cnum,$cdom,$inst_coursecode) = @_;
5098: my $homeserver = &homeserver($cnum,$cdom);
5099: my @secs = ();
5100: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5101: unless ($response eq 'refused') {
5102: @secs = split(/:/,$response);
5103: }
5104: return @secs;
5105: }
5106:
5107: sub auto_new_course {
5108: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5109: my $homeserver = &homeserver($cnum,$cdom);
5110: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5111: return $response;
5112: }
5113:
5114: sub auto_validate_courseID {
5115: my ($cnum,$cdom,$inst_course_id) = @_;
5116: my $homeserver = &homeserver($cnum,$cdom);
5117: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5118: return $response;
5119: }
5120:
5121: sub auto_create_password {
5122: my ($cnum,$cdom,$authparam,$udom) = @_;
5123: my ($homeserver,$response);
5124: my $create_passwd = 0;
5125: my $authchk = '';
5126: if ($udom =~ /^$match_domain$/) {
5127: $homeserver = &domain($udom,'primary');
5128: }
5129: if ($homeserver eq '') {
5130: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5131: $homeserver = &homeserver($cnum,$cdom);
5132: }
5133: }
5134: if ($homeserver eq '') {
5135: $authchk = 'nodomain';
5136: } else {
5137: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5138: if ($response eq 'refused') {
5139: $authchk = 'refused';
5140: } else {
5141: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5142: }
5143: }
5144: return ($authparam,$create_passwd,$authchk);
5145: }
5146:
5147: sub auto_photo_permission {
5148: my ($cnum,$cdom,$students) = @_;
5149: my $homeserver = &homeserver($cnum,$cdom);
5150: my ($outcome,$perm_reqd,$conditions) =
5151: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5152: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5153: return (undef,undef);
5154: }
5155: return ($outcome,$perm_reqd,$conditions);
5156: }
5157:
5158: sub auto_checkphotos {
5159: my ($uname,$udom,$pid) = @_;
5160: my $homeserver = &homeserver($uname,$udom);
5161: my ($result,$resulttype);
5162: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5163: &escape($uname).':'.&escape($pid),
5164: $homeserver));
5165: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5166: return (undef,undef);
5167: }
5168: if ($outcome) {
5169: ($result,$resulttype) = split(/:/,$outcome);
5170: }
5171: return ($result,$resulttype);
5172: }
5173:
5174: sub auto_photochoice {
5175: my ($cnum,$cdom) = @_;
5176: my $homeserver = &homeserver($cnum,$cdom);
5177: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5178: &escape($cdom),
5179: $homeserver)));
5180: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5181: return (undef,undef);
5182: }
5183: return ($update,$comment);
5184: }
5185:
5186: sub auto_photoupdate {
5187: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5188: my $homeserver = &homeserver($cnum,$dom);
5189: my $host=&hostname($homeserver);
5190: my $cmd = '';
5191: my $maxtries = 1;
5192: foreach my $affiliate (keys(%{$affiliatesref})) {
5193: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5194: }
5195: $cmd =~ s/%%$//;
5196: $cmd = &escape($cmd);
5197: my $query = 'institutionalphotos';
5198: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5199: unless ($queryid=~/^\Q$host\E\_/) {
5200: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5201: return 'error: '.$queryid;
5202: }
5203: my $reply = &get_query_reply($queryid);
5204: my $tries = 1;
5205: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5206: $reply = &get_query_reply($queryid);
5207: $tries ++;
5208: }
5209: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5210: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5211: } else {
5212: my @responses = split(/:/,$reply);
5213: my $outcome = shift(@responses);
5214: foreach my $item (@responses) {
5215: my ($key,$value) = split(/=/,$item);
5216: $$photo{$key} = $value;
5217: }
5218: return $outcome;
5219: }
5220: return 'error';
5221: }
5222:
5223: sub auto_instcode_format {
5224: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5225: $cat_order) = @_;
5226: my $courses = '';
5227: my @homeservers;
5228: if ($caller eq 'global') {
5229: my %servers = &get_servers($codedom,'library');
5230: foreach my $tryserver (keys(%servers)) {
5231: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5232: push(@homeservers,$tryserver);
5233: }
5234: }
5235: } else {
5236: push(@homeservers,&homeserver($caller,$codedom));
5237: }
5238: foreach my $code (keys(%{$instcodes})) {
5239: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5240: }
5241: chop($courses);
5242: my $ok_response = 0;
5243: my $response;
5244: while (@homeservers > 0 && $ok_response == 0) {
5245: my $server = shift(@homeservers);
5246: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5247: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5248: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5249: split(/:/,$response);
5250: %{$codes} = (%{$codes},&str2hash($codes_str));
5251: push(@{$codetitles},&str2array($codetitles_str));
5252: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5253: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5254: $ok_response = 1;
5255: }
5256: }
5257: if ($ok_response) {
5258: return 'ok';
5259: } else {
5260: return $response;
5261: }
5262: }
5263:
5264: sub auto_instcode_defaults {
5265: my ($domain,$returnhash,$code_order) = @_;
5266: my @homeservers;
5267:
5268: my %servers = &get_servers($domain,'library');
5269: foreach my $tryserver (keys(%servers)) {
5270: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5271: push(@homeservers,$tryserver);
5272: }
5273: }
5274:
5275: my $response;
5276: foreach my $server (@homeservers) {
5277: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5278: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5279:
5280: foreach my $pair (split(/\&/,$response)) {
5281: my ($name,$value)=split(/\=/,$pair);
5282: if ($name eq 'code_order') {
5283: @{$code_order} = split(/\&/,&unescape($value));
5284: } else {
5285: $returnhash->{&unescape($name)}=&unescape($value);
5286: }
5287: }
5288: return 'ok';
5289: }
5290:
5291: return $response;
5292: }
5293:
5294: sub auto_validate_class_sec {
5295: my ($cdom,$cnum,$owners,$inst_class) = @_;
5296: my $homeserver = &homeserver($cnum,$cdom);
5297: my $ownerlist;
5298: if (ref($owners) eq 'ARRAY') {
5299: $ownerlist = join(',',@{$owners});
5300: } else {
5301: $ownerlist = $owners;
5302: }
5303: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5304: &escape($ownerlist).':'.$cdom,$homeserver);
5305: return $response;
5306: }
5307:
5308: # ------------------------------------------------------- Course Group routines
5309:
5310: sub get_coursegroups {
5311: my ($cdom,$cnum,$group,$namespace) = @_;
5312: return(&dump($namespace,$cdom,$cnum,$group));
5313: }
5314:
5315: sub modify_coursegroup {
5316: my ($cdom,$cnum,$groupsettings) = @_;
5317: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5318: }
5319:
5320: sub toggle_coursegroup_status {
5321: my ($cdom,$cnum,$group,$action) = @_;
5322: my ($from_namespace,$to_namespace);
5323: if ($action eq 'delete') {
5324: $from_namespace = 'coursegroups';
5325: $to_namespace = 'deleted_groups';
5326: } else {
5327: $from_namespace = 'deleted_groups';
5328: $to_namespace = 'coursegroups';
5329: }
5330: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5331: if (my $tmp = &error(%curr_group)) {
5332: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5333: return ('read error',$tmp);
5334: } else {
5335: my %savedsettings = %curr_group;
5336: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5337: my $deloutcome;
5338: if ($result eq 'ok') {
5339: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5340: } else {
5341: return ('write error',$result);
5342: }
5343: if ($deloutcome eq 'ok') {
5344: return 'ok';
5345: } else {
5346: return ('delete error',$deloutcome);
5347: }
5348: }
5349: }
5350:
5351: sub modify_group_roles {
5352: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5353: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5354: my $role = 'gr/'.&escape($userprivs);
5355: my ($uname,$udom) = split(/:/,$user);
5356: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5357: if ($result eq 'ok') {
5358: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5359: }
5360: return $result;
5361: }
5362:
5363: sub modify_coursegroup_membership {
5364: my ($cdom,$cnum,$membership) = @_;
5365: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5366: return $result;
5367: }
5368:
5369: sub get_active_groups {
5370: my ($udom,$uname,$cdom,$cnum) = @_;
5371: my $now = time;
5372: my %groups = ();
5373: foreach my $key (keys(%env)) {
5374: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5375: my ($start,$end) = split(/\./,$env{$key});
5376: if (($end!=0) && ($end<$now)) { next; }
5377: if (($start!=0) && ($start>$now)) { next; }
5378: if ($1 eq $cdom && $2 eq $cnum) {
5379: $groups{$3} = $env{$key} ;
5380: }
5381: }
5382: }
5383: return %groups;
5384: }
5385:
5386: sub get_group_membership {
5387: my ($cdom,$cnum,$group) = @_;
5388: return(&dump('groupmembership',$cdom,$cnum,$group));
5389: }
5390:
5391: sub get_users_groups {
5392: my ($udom,$uname,$courseid) = @_;
5393: my @usersgroups;
5394: my $cachetime=1800;
5395:
5396: my $hashid="$udom:$uname:$courseid";
5397: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5398: if (defined($cached)) {
5399: @usersgroups = split(/:/,$grouplist);
5400: } else {
5401: $grouplist = '';
5402: my $courseurl = &courseid_to_courseurl($courseid);
5403: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5404: my $access_end = $env{'course.'.$courseid.
5405: '.default_enrollment_end_date'};
5406: my $now = time;
5407: foreach my $key (keys(%roleshash)) {
5408: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5409: my $group = $1;
5410: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5411: my $start = $2;
5412: my $end = $1;
5413: if ($start == -1) { next; } # deleted from group
5414: if (($start!=0) && ($start>$now)) { next; }
5415: if (($end!=0) && ($end<$now)) {
5416: if ($access_end && $access_end < $now) {
5417: if ($access_end - $end < 86400) {
5418: push(@usersgroups,$group);
5419: }
5420: }
5421: next;
5422: }
5423: push(@usersgroups,$group);
5424: }
5425: }
5426: }
5427: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5428: $grouplist = join(':',@usersgroups);
5429: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5430: }
5431: return @usersgroups;
5432: }
5433:
5434: sub devalidate_getgroups_cache {
5435: my ($udom,$uname,$cdom,$cnum)=@_;
5436: my $courseid = $cdom.'_'.$cnum;
5437:
5438: my $hashid="$udom:$uname:$courseid";
5439: &devalidate_cache_new('getgroups',$hashid);
5440: }
5441:
5442: # ------------------------------------------------------------------ Plain Text
5443:
5444: sub plaintext {
5445: my ($short,$type,$cid) = @_;
5446: if ($short =~ /^cr/) {
5447: return (split('/',$short))[-1];
5448: }
5449: if (!defined($cid)) {
5450: $cid = $env{'request.course.id'};
5451: }
5452: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5453: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5454: '.plaintext'});
5455: }
5456: my %rolenames = (
5457: Course => 'std',
5458: Group => 'alt1',
5459: );
5460: if (defined($type) &&
5461: defined($rolenames{$type}) &&
5462: defined($prp{$short}{$rolenames{$type}})) {
5463: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5464: } else {
5465: return &Apache::lonlocal::mt($prp{$short}{'std'});
5466: }
5467: }
5468:
5469: # ----------------------------------------------------------------- Assign Role
5470:
5471: sub assignrole {
5472: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5473: $context)=@_;
5474: my $mrole;
5475: if ($role =~ /^cr\//) {
5476: my $cwosec=$url;
5477: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5478: unless (&allowed('ccr',$cwosec)) {
5479: &logthis('Refused custom assignrole: '.
5480: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5481: $env{'user.name'}.' at '.$env{'user.domain'});
5482: return 'refused';
5483: }
5484: $mrole='cr';
5485: } elsif ($role =~ /^gr\//) {
5486: my $cwogrp=$url;
5487: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5488: unless (&allowed('mdg',$cwogrp)) {
5489: &logthis('Refused group assignrole: '.
5490: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5491: $env{'user.name'}.' at '.$env{'user.domain'});
5492: return 'refused';
5493: }
5494: $mrole='gr';
5495: } else {
5496: my $cwosec=$url;
5497: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5498: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5499: my $refused;
5500: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5501: if (!(&allowed('c'.$role,$url))) {
5502: $refused = 1;
5503: }
5504: } else {
5505: $refused = 1;
5506: }
5507: if ($refused) {
5508: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5509: $refused = '';
5510: } else {
5511: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5512: ' '.$role.' '.$end.' '.$start.' by '.
5513: $env{'user.name'}.' at '.$env{'user.domain'});
5514: return 'refused';
5515: }
5516: }
5517: }
5518: $mrole=$role;
5519: }
5520: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5521: "$udom:$uname:$url".'_'."$mrole=$role";
5522: if ($end) { $command.='_'.$end; }
5523: if ($start) {
5524: if ($end) {
5525: $command.='_'.$start;
5526: } else {
5527: $command.='_0_'.$start;
5528: }
5529: }
5530: my $origstart = $start;
5531: my $origend = $end;
5532: my $delflag;
5533: # actually delete
5534: if ($deleteflag) {
5535: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5536: # modify command to delete the role
5537: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5538: "$udom:$uname:$url".'_'."$mrole";
5539: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5540: # set start and finish to negative values for userrolelog
5541: $start=-1;
5542: $end=-1;
5543: $delflag = 1;
5544: }
5545: }
5546: # send command
5547: my $answer=&reply($command,&homeserver($uname,$udom));
5548: # log new user role if status is ok
5549: if ($answer eq 'ok') {
5550: &userrolelog($role,$uname,$udom,$url,$start,$end);
5551: # for course roles, perform group memberships changes triggered by role change.
5552: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
5553: unless ($role =~ /^gr/) {
5554: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5555: $origstart,$selfenroll,$context);
5556: }
5557: }
5558: return $answer;
5559: }
5560:
5561: # -------------------------------------------------- Modify user authentication
5562: # Overrides without validation
5563:
5564: sub modifyuserauth {
5565: my ($udom,$uname,$umode,$upass)=@_;
5566: my $uhome=&homeserver($uname,$udom);
5567: unless (&allowed('mau',$udom)) { return 'refused'; }
5568: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5569: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5570: ' in domain '.$env{'request.role.domain'});
5571: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5572: &escape($upass),$uhome);
5573: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5574: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5575: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5576: &log($udom,,$uname,$uhome,
5577: 'Authentication changed by '.$env{'user.domain'}.', '.
5578: $env{'user.name'}.', '.$umode.
5579: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5580: unless ($reply eq 'ok') {
5581: &logthis('Authentication mode error: '.$reply);
5582: return 'error: '.$reply;
5583: }
5584: return 'ok';
5585: }
5586:
5587: # --------------------------------------------------------------- Modify a user
5588:
5589: sub modifyuser {
5590: my ($udom, $uname, $uid,
5591: $umode, $upass, $first,
5592: $middle, $last, $gene,
5593: $forceid, $desiredhome, $email, $inststatus)=@_;
5594: $udom= &LONCAPA::clean_domain($udom);
5595: $uname=&LONCAPA::clean_username($uname);
5596: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5597: $umode.', '.$first.', '.$middle.', '.
5598: $last.', '.$gene.'(forceid: '.$forceid.')'.
5599: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5600: ' desiredhome not specified').
5601: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5602: ' in domain '.$env{'request.role.domain'});
5603: my $uhome=&homeserver($uname,$udom,'true');
5604: # ----------------------------------------------------------------- Create User
5605: if (($uhome eq 'no_host') &&
5606: (($umode && $upass) || ($umode eq 'localauth'))) {
5607: my $unhome='';
5608: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5609: $unhome = $desiredhome;
5610: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5611: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5612: } else { # load balancing routine for determining $unhome
5613: my $loadm=10000000;
5614: my %servers = &get_servers($udom,'library');
5615: foreach my $tryserver (keys(%servers)) {
5616: my $answer=reply('load',$tryserver);
5617: if (($answer=~/\d+/) && ($answer<$loadm)) {
5618: $loadm=$answer;
5619: $unhome=$tryserver;
5620: }
5621: }
5622: }
5623: if (($unhome eq '') || ($unhome eq 'no_host')) {
5624: return 'error: unable to find a home server for '.$uname.
5625: ' in domain '.$udom;
5626: }
5627: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5628: &escape($upass),$unhome);
5629: unless ($reply eq 'ok') {
5630: return 'error: '.$reply;
5631: }
5632: $uhome=&homeserver($uname,$udom,'true');
5633: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5634: return 'error: unable verify users home machine.';
5635: }
5636: } # End of creation of new user
5637: # ---------------------------------------------------------------------- Add ID
5638: if ($uid) {
5639: $uid=~tr/A-Z/a-z/;
5640: my %uidhash=&idrget($udom,$uname);
5641: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5642: && (!$forceid)) {
5643: unless ($uid eq $uidhash{$uname}) {
5644: return 'error: user id "'.$uid.'" does not match '.
5645: 'current user id "'.$uidhash{$uname}.'".';
5646: }
5647: } else {
5648: &idput($udom,($uname => $uid));
5649: }
5650: }
5651: # -------------------------------------------------------------- Add names, etc
5652: my @tmp=&get('environment',
5653: ['firstname','middlename','lastname','generation','id',
5654: 'permanentemail','inststatus'],
5655: $udom,$uname);
5656: my %names;
5657: if ($tmp[0] =~ m/^error:.*/) {
5658: %names=();
5659: } else {
5660: %names = @tmp;
5661: }
5662: #
5663: # Make sure to not trash student environment if instructor does not bother
5664: # to supply name and email information
5665: #
5666: if ($first) { $names{'firstname'} = $first; }
5667: if (defined($middle)) { $names{'middlename'} = $middle; }
5668: if ($last) { $names{'lastname'} = $last; }
5669: if (defined($gene)) { $names{'generation'} = $gene; }
5670: if ($email) {
5671: $email=~s/[^\w\@\.\-\,]//gs;
5672: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
5673: }
5674: if ($uid) { $names{'id'} = $uid; }
5675: if (defined($inststatus)) { $names{'inststatus'} = $inststatus; }
5676: my $reply = &put('environment', \%names, $udom,$uname);
5677: if ($reply ne 'ok') { return 'error: '.$reply; }
5678: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5679: &devalidate_cache_new('namescache',$uname.':'.$udom);
5680: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5681: $umode.', '.$first.', '.$middle.', '.
5682: $last.', '.$gene.', '.$email.', '.$inststatus;
5683: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
5684: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
5685: } else {
5686: $logmsg .= ' during self creation';
5687: }
5688: &logthis($logmsg);
5689: return 'ok';
5690: }
5691:
5692: # -------------------------------------------------------------- Modify student
5693:
5694: sub modifystudent {
5695: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5696: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
5697: $selfenroll,$context)=@_;
5698: if (!$cid) {
5699: unless ($cid=$env{'request.course.id'}) {
5700: return 'not_in_class';
5701: }
5702: }
5703: # --------------------------------------------------------------- Make the user
5704: my $reply=&modifyuser
5705: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5706: $desiredhome,$email);
5707: unless ($reply eq 'ok') { return $reply; }
5708: # This will cause &modify_student_enrollment to get the uid from the
5709: # students environment
5710: $uid = undef if (!$forceid);
5711: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5712: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
5713: return $reply;
5714: }
5715:
5716: sub modify_student_enrollment {
5717: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
5718: my ($cdom,$cnum,$chome);
5719: if (!$cid) {
5720: unless ($cid=$env{'request.course.id'}) {
5721: return 'not_in_class';
5722: }
5723: $cdom=$env{'course.'.$cid.'.domain'};
5724: $cnum=$env{'course.'.$cid.'.num'};
5725: } else {
5726: ($cdom,$cnum)=split(/_/,$cid);
5727: }
5728: $chome=$env{'course.'.$cid.'.home'};
5729: if (!$chome) {
5730: $chome=&homeserver($cnum,$cdom);
5731: }
5732: if (!$chome) { return 'unknown_course'; }
5733: # Make sure the user exists
5734: my $uhome=&homeserver($uname,$udom);
5735: if (($uhome eq '') || ($uhome eq 'no_host')) {
5736: return 'error: no such user';
5737: }
5738: # Get student data if we were not given enough information
5739: if (!defined($first) || $first eq '' ||
5740: !defined($last) || $last eq '' ||
5741: !defined($uid) || $uid eq '' ||
5742: !defined($middle) || $middle eq '' ||
5743: !defined($gene) || $gene eq '') {
5744: # They did not supply us with enough data to enroll the student, so
5745: # we need to pick up more information.
5746: my %tmp = &get('environment',
5747: ['firstname','middlename','lastname', 'generation','id']
5748: ,$udom,$uname);
5749:
5750: #foreach my $key (keys(%tmp)) {
5751: # &logthis("key $key = ".$tmp{$key});
5752: #}
5753: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5754: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5755: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5756: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5757: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5758: }
5759: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5760: my $reply=cput('classlist',
5761: {"$uname:$udom" =>
5762: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5763: $cdom,$cnum);
5764: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5765: return 'error: '.$reply;
5766: } else {
5767: &devalidate_getsection_cache($udom,$uname,$cid);
5768: }
5769: # Add student role to user
5770: my $uurl='/'.$cid;
5771: $uurl=~s/\_/\//g;
5772: if ($usec) {
5773: $uurl.='/'.$usec;
5774: }
5775: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
5776: }
5777:
5778: sub format_name {
5779: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5780: my $name;
5781: if ($first ne 'lastname') {
5782: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5783: } else {
5784: if ($lastname=~/\S/) {
5785: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5786: $name=~s/\s+,/,/;
5787: } else {
5788: $name.= $firstname.' '.$middlename.' '.$generation;
5789: }
5790: }
5791: $name=~s/^\s+//;
5792: $name=~s/\s+$//;
5793: $name=~s/\s+/ /g;
5794: return $name;
5795: }
5796:
5797: # ------------------------------------------------- Write to course preferences
5798:
5799: sub writecoursepref {
5800: my ($courseid,%prefs)=@_;
5801: $courseid=~s/^\///;
5802: $courseid=~s/\_/\//g;
5803: my ($cdomain,$cnum)=split(/\//,$courseid);
5804: my $chome=homeserver($cnum,$cdomain);
5805: if (($chome eq '') || ($chome eq 'no_host')) {
5806: return 'error: no such course';
5807: }
5808: my $cstring='';
5809: foreach my $pref (keys(%prefs)) {
5810: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5811: }
5812: $cstring=~s/\&$//;
5813: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5814: }
5815:
5816: # ---------------------------------------------------------- Make/modify course
5817:
5818: sub createcourse {
5819: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5820: $course_owner,$crstype)=@_;
5821: $url=&declutter($url);
5822: my $cid='';
5823: unless (&allowed('ccc',$udom)) {
5824: return 'refused';
5825: }
5826: # ------------------------------------------------------------------- Create ID
5827: my $uname=int(1+rand(9)).
5828: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5829: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5830: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5831: # ----------------------------------------------- Make sure that does not exist
5832: my $uhome=&homeserver($uname,$udom,'true');
5833: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5834: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5835: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5836: $uhome=&homeserver($uname,$udom,'true');
5837: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5838: return 'error: unable to generate unique course-ID';
5839: }
5840: }
5841: # ------------------------------------------------ Check supplied server name
5842: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5843: if (! &is_library($course_server)) {
5844: return 'error:bad server name '.$course_server;
5845: }
5846: # ------------------------------------------------------------- Make the course
5847: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5848: $course_server);
5849: unless ($reply eq 'ok') { return 'error: '.$reply; }
5850: $uhome=&homeserver($uname,$udom,'true');
5851: if (($uhome eq '') || ($uhome eq 'no_host')) {
5852: return 'error: no such course';
5853: }
5854: # ----------------------------------------------------------------- Course made
5855: # log existence
5856: my $newcourse = {
5857: $udom.'_'.$uname => {
5858: description => $description,
5859: inst_code => $inst_code,
5860: owner => $course_owner,
5861: type => $crstype,
5862: },
5863: };
5864: &courseidput($udom,$newcourse,$uhome,'notime');
5865: # set toplevel url
5866: my $topurl=$url;
5867: unless ($nonstandard) {
5868: # ------------------------------------------ For standard courses, make top url
5869: my $mapurl=&clutter($url);
5870: if ($mapurl eq '/res/') { $mapurl=''; }
5871: $env{'form.initmap'}=(<<ENDINITMAP);
5872: <map>
5873: <resource id="1" type="start"></resource>
5874: <resource id="2" src="$mapurl"></resource>
5875: <resource id="3" type="finish"></resource>
5876: <link index="1" from="1" to="2"></link>
5877: <link index="2" from="2" to="3"></link>
5878: </map>
5879: ENDINITMAP
5880: $topurl=&declutter(
5881: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5882: );
5883: }
5884: # ----------------------------------------------------------- Write preferences
5885: &writecoursepref($udom.'_'.$uname,
5886: ('description' => $description,
5887: 'url' => $topurl));
5888: return '/'.$udom.'/'.$uname;
5889: }
5890:
5891: sub is_course {
5892: my ($cdom,$cnum) = @_;
5893: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5894: undef,'.');
5895: if (exists($courses{$cdom.'_'.$cnum})) {
5896: return 1;
5897: }
5898: return 0;
5899: }
5900:
5901: # ---------------------------------------------------------- Assign Custom Role
5902:
5903: sub assigncustomrole {
5904: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
5905: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5906: $end,$start,$deleteflag,$selfenroll,$context);
5907: }
5908:
5909: # ----------------------------------------------------------------- Revoke Role
5910:
5911: sub revokerole {
5912: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
5913: my $now=time;
5914: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
5915: }
5916:
5917: # ---------------------------------------------------------- Revoke Custom Role
5918:
5919: sub revokecustomrole {
5920: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
5921: my $now=time;
5922: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5923: $deleteflag,$selfenroll,$context);
5924: }
5925:
5926: # ------------------------------------------------------------ Disk usage
5927: sub diskusage {
5928: my ($udom,$uname,$directorypath,$getpropath)=@_;
5929: $directorypath =~ s/\/$//;
5930: my $listing=&reply('du2:'.&escape($directorypath).':'
5931: .&escape($getpropath).':'.&escape($uname).':'
5932: .&escape($udom),homeserver($uname,$udom));
5933: if ($listing eq 'unknown_cmd') {
5934: if ($getpropath) {
5935: $directorypath = &propath($udom,$uname).'/'.$directorypath;
5936: }
5937: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
5938: }
5939: return $listing;
5940: }
5941:
5942: sub is_locked {
5943: my ($file_name, $domain, $user) = @_;
5944: my @check;
5945: my $is_locked;
5946: push @check, $file_name;
5947: my %locked = &get('file_permissions',\@check,
5948: $env{'user.domain'},$env{'user.name'});
5949: my ($tmp)=keys(%locked);
5950: if ($tmp=~/^error:/) { undef(%locked); }
5951:
5952: if (ref($locked{$file_name}) eq 'ARRAY') {
5953: $is_locked = 'false';
5954: foreach my $entry (@{$locked{$file_name}}) {
5955: if (ref($entry) eq 'ARRAY') {
5956: $is_locked = 'true';
5957: last;
5958: }
5959: }
5960: } else {
5961: $is_locked = 'false';
5962: }
5963: }
5964:
5965: sub declutter_portfile {
5966: my ($file) = @_;
5967: $file =~ s{^(/portfolio/|portfolio/)}{/};
5968: return $file;
5969: }
5970:
5971: # ------------------------------------------------------------- Mark as Read Only
5972:
5973: sub mark_as_readonly {
5974: my ($domain,$user,$files,$what) = @_;
5975: my %current_permissions = &dump('file_permissions',$domain,$user);
5976: my ($tmp)=keys(%current_permissions);
5977: if ($tmp=~/^error:/) { undef(%current_permissions); }
5978: foreach my $file (@{$files}) {
5979: $file = &declutter_portfile($file);
5980: push(@{$current_permissions{$file}},$what);
5981: }
5982: &put('file_permissions',\%current_permissions,$domain,$user);
5983: return;
5984: }
5985:
5986: # ------------------------------------------------------------Save Selected Files
5987:
5988: sub save_selected_files {
5989: my ($user, $path, @files) = @_;
5990: my $filename = $user."savedfiles";
5991: my @other_files = &files_not_in_path($user, $path);
5992: open (OUT, '>'.$tmpdir.$filename);
5993: foreach my $file (@files) {
5994: print (OUT $env{'form.currentpath'}.$file."\n");
5995: }
5996: foreach my $file (@other_files) {
5997: print (OUT $file."\n");
5998: }
5999: close (OUT);
6000: return 'ok';
6001: }
6002:
6003: sub clear_selected_files {
6004: my ($user) = @_;
6005: my $filename = $user."savedfiles";
6006: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6007: print (OUT undef);
6008: close (OUT);
6009: return ("ok");
6010: }
6011:
6012: sub files_in_path {
6013: my ($user, $path) = @_;
6014: my $filename = $user."savedfiles";
6015: my %return_files;
6016: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6017: while (my $line_in = <IN>) {
6018: chomp ($line_in);
6019: my @paths_and_file = split (m!/!, $line_in);
6020: my $file_part = pop (@paths_and_file);
6021: my $path_part = join ('/', @paths_and_file);
6022: $path_part.='/';
6023: my $path_and_file = $path_part.$file_part;
6024: if ($path_part eq $path) {
6025: $return_files{$file_part}= 'selected';
6026: }
6027: }
6028: close (IN);
6029: return (\%return_files);
6030: }
6031:
6032: # called in portfolio select mode, to show files selected NOT in current directory
6033: sub files_not_in_path {
6034: my ($user, $path) = @_;
6035: my $filename = $user."savedfiles";
6036: my @return_files;
6037: my $path_part;
6038: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6039: while (my $line = <IN>) {
6040: #ok, I know it's clunky, but I want it to work
6041: my @paths_and_file = split(m|/|, $line);
6042: my $file_part = pop(@paths_and_file);
6043: chomp($file_part);
6044: my $path_part = join('/', @paths_and_file);
6045: $path_part .= '/';
6046: my $path_and_file = $path_part.$file_part;
6047: if ($path_part ne $path) {
6048: push(@return_files, ($path_and_file));
6049: }
6050: }
6051: close(OUT);
6052: return (@return_files);
6053: }
6054:
6055: #----------------------------------------------Get portfolio file permissions
6056:
6057: sub get_portfile_permissions {
6058: my ($domain,$user) = @_;
6059: my %current_permissions = &dump('file_permissions',$domain,$user);
6060: my ($tmp)=keys(%current_permissions);
6061: if ($tmp=~/^error:/) { undef(%current_permissions); }
6062: return \%current_permissions;
6063: }
6064:
6065: #---------------------------------------------Get portfolio file access controls
6066:
6067: sub get_access_controls {
6068: my ($current_permissions,$group,$file) = @_;
6069: my %access;
6070: my $real_file = $file;
6071: $file =~ s/\.meta$//;
6072: if (defined($file)) {
6073: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6074: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6075: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6076: }
6077: }
6078: } else {
6079: foreach my $key (keys(%{$current_permissions})) {
6080: if ($key =~ /\0accesscontrol$/) {
6081: if (defined($group)) {
6082: if ($key !~ m-^\Q$group\E/-) {
6083: next;
6084: }
6085: }
6086: my ($fullpath) = split(/\0/,$key);
6087: if (ref($$current_permissions{$key}) eq 'HASH') {
6088: foreach my $control (keys(%{$$current_permissions{$key}})) {
6089: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6090: }
6091: }
6092: }
6093: }
6094: }
6095: return %access;
6096: }
6097:
6098: sub modify_access_controls {
6099: my ($file_name,$changes,$domain,$user)=@_;
6100: my ($outcome,$deloutcome);
6101: my %store_permissions;
6102: my %new_values;
6103: my %new_control;
6104: my %translation;
6105: my @deletions = ();
6106: my $now = time;
6107: if (exists($$changes{'activate'})) {
6108: if (ref($$changes{'activate'}) eq 'HASH') {
6109: my @newitems = sort(keys(%{$$changes{'activate'}}));
6110: my $numnew = scalar(@newitems);
6111: for (my $i=0; $i<$numnew; $i++) {
6112: my $newkey = $newitems[$i];
6113: my $newid = &Apache::loncommon::get_cgi_id();
6114: if ($newkey =~ /^\d+:/) {
6115: $newkey =~ s/^(\d+)/$newid/;
6116: $translation{$1} = $newid;
6117: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6118: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6119: $translation{$1} = $newid;
6120: }
6121: $new_values{$file_name."\0".$newkey} =
6122: $$changes{'activate'}{$newitems[$i]};
6123: $new_control{$newkey} = $now;
6124: }
6125: }
6126: }
6127: my %todelete;
6128: my %changed_items;
6129: foreach my $action ('delete','update') {
6130: if (exists($$changes{$action})) {
6131: if (ref($$changes{$action}) eq 'HASH') {
6132: foreach my $key (keys(%{$$changes{$action}})) {
6133: my ($itemnum) = ($key =~ /^([^:]+):/);
6134: if ($action eq 'delete') {
6135: $todelete{$itemnum} = 1;
6136: } else {
6137: $changed_items{$itemnum} = $key;
6138: }
6139: }
6140: }
6141: }
6142: }
6143: # get lock on access controls for file.
6144: my $lockhash = {
6145: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6146: ':'.$env{'user.domain'},
6147: };
6148: my $tries = 0;
6149: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6150:
6151: while (($gotlock ne 'ok') && $tries <3) {
6152: $tries ++;
6153: sleep 1;
6154: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6155: }
6156: if ($gotlock eq 'ok') {
6157: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6158: my ($tmp)=keys(%curr_permissions);
6159: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6160: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6161: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6162: if (ref($curr_controls) eq 'HASH') {
6163: foreach my $control_item (keys(%{$curr_controls})) {
6164: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6165: if (defined($todelete{$itemnum})) {
6166: push(@deletions,$file_name."\0".$control_item);
6167: } else {
6168: if (defined($changed_items{$itemnum})) {
6169: $new_control{$changed_items{$itemnum}} = $now;
6170: push(@deletions,$file_name."\0".$control_item);
6171: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6172: } else {
6173: $new_control{$control_item} = $$curr_controls{$control_item};
6174: }
6175: }
6176: }
6177: }
6178: }
6179: my ($group);
6180: if (&is_course($domain,$user)) {
6181: ($group,my $file) = split(/\//,$file_name,2);
6182: }
6183: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6184: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6185: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6186: # remove lock
6187: my @del_lock = ($file_name."\0".'locked_access_records');
6188: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6189: my $sqlresult =
6190: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
6191: $group);
6192: } else {
6193: $outcome = "error: could not obtain lockfile\n";
6194: }
6195: return ($outcome,$deloutcome,\%new_values,\%translation);
6196: }
6197:
6198: sub make_public_indefinitely {
6199: my ($requrl) = @_;
6200: my $now = time;
6201: my $action = 'activate';
6202: my $aclnum = 0;
6203: if (&is_portfolio_url($requrl)) {
6204: my (undef,$udom,$unum,$file_name,$group) =
6205: &parse_portfolio_url($requrl);
6206: my $current_perms = &get_portfile_permissions($udom,$unum);
6207: my %access_controls = &get_access_controls($current_perms,
6208: $group,$file_name);
6209: foreach my $key (keys(%{$access_controls{$file_name}})) {
6210: my ($num,$scope,$end,$start) =
6211: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6212: if ($scope eq 'public') {
6213: if ($start <= $now && $end == 0) {
6214: $action = 'none';
6215: } else {
6216: $action = 'update';
6217: $aclnum = $num;
6218: }
6219: last;
6220: }
6221: }
6222: if ($action eq 'none') {
6223: return 'ok';
6224: } else {
6225: my %changes;
6226: my $newend = 0;
6227: my $newstart = $now;
6228: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6229: $changes{$action}{$newkey} = {
6230: type => 'public',
6231: time => {
6232: start => $newstart,
6233: end => $newend,
6234: },
6235: };
6236: my ($outcome,$deloutcome,$new_values,$translation) =
6237: &modify_access_controls($file_name,\%changes,$udom,$unum);
6238: return $outcome;
6239: }
6240: } else {
6241: return 'invalid';
6242: }
6243: }
6244:
6245: #------------------------------------------------------Get Marked as Read Only
6246:
6247: sub get_marked_as_readonly {
6248: my ($domain,$user,$what,$group) = @_;
6249: my $current_permissions = &get_portfile_permissions($domain,$user);
6250: my @readonly_files;
6251: my $cmp1=$what;
6252: if (ref($what)) { $cmp1=join('',@{$what}) };
6253: while (my ($file_name,$value) = each(%{$current_permissions})) {
6254: if (defined($group)) {
6255: if ($file_name !~ m-^\Q$group\E/-) {
6256: next;
6257: }
6258: }
6259: if (ref($value) eq "ARRAY"){
6260: foreach my $stored_what (@{$value}) {
6261: my $cmp2=$stored_what;
6262: if (ref($stored_what) eq 'ARRAY') {
6263: $cmp2=join('',@{$stored_what});
6264: }
6265: if ($cmp1 eq $cmp2) {
6266: push(@readonly_files, $file_name);
6267: last;
6268: } elsif (!defined($what)) {
6269: push(@readonly_files, $file_name);
6270: last;
6271: }
6272: }
6273: }
6274: }
6275: return @readonly_files;
6276: }
6277: #-----------------------------------------------------------Get Marked as Read Only Hash
6278:
6279: sub get_marked_as_readonly_hash {
6280: my ($current_permissions,$group,$what) = @_;
6281: my %readonly_files;
6282: while (my ($file_name,$value) = each(%{$current_permissions})) {
6283: if (defined($group)) {
6284: if ($file_name !~ m-^\Q$group\E/-) {
6285: next;
6286: }
6287: }
6288: if (ref($value) eq "ARRAY"){
6289: foreach my $stored_what (@{$value}) {
6290: if (ref($stored_what) eq 'ARRAY') {
6291: foreach my $lock_descriptor(@{$stored_what}) {
6292: if ($lock_descriptor eq 'graded') {
6293: $readonly_files{$file_name} = 'graded';
6294: } elsif ($lock_descriptor eq 'handback') {
6295: $readonly_files{$file_name} = 'handback';
6296: } else {
6297: if (!exists($readonly_files{$file_name})) {
6298: $readonly_files{$file_name} = 'locked';
6299: }
6300: }
6301: }
6302: }
6303: }
6304: }
6305: }
6306: return %readonly_files;
6307: }
6308: # ------------------------------------------------------------ Unmark as Read Only
6309:
6310: sub unmark_as_readonly {
6311: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6312: # for portfolio submissions, $what contains [$symb,$crsid]
6313: my ($domain,$user,$what,$file_name,$group) = @_;
6314: $file_name = &declutter_portfile($file_name);
6315: my $symb_crs = $what;
6316: if (ref($what)) { $symb_crs=join('',@$what); }
6317: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6318: my ($tmp)=keys(%current_permissions);
6319: if ($tmp=~/^error:/) { undef(%current_permissions); }
6320: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6321: foreach my $file (@readonly_files) {
6322: my $clean_file = &declutter_portfile($file);
6323: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6324: my $current_locks = $current_permissions{$file};
6325: my @new_locks;
6326: my @del_keys;
6327: if (ref($current_locks) eq "ARRAY"){
6328: foreach my $locker (@{$current_locks}) {
6329: my $compare=$locker;
6330: if (ref($locker) eq 'ARRAY') {
6331: $compare=join('',@{$locker});
6332: if ($compare ne $symb_crs) {
6333: push(@new_locks, $locker);
6334: }
6335: }
6336: }
6337: if (scalar(@new_locks) > 0) {
6338: $current_permissions{$file} = \@new_locks;
6339: } else {
6340: push(@del_keys, $file);
6341: &del('file_permissions',\@del_keys, $domain, $user);
6342: delete($current_permissions{$file});
6343: }
6344: }
6345: }
6346: &put('file_permissions',\%current_permissions,$domain,$user);
6347: return;
6348: }
6349:
6350: # ------------------------------------------------------------ Directory lister
6351:
6352: sub dirlist {
6353: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6354: $uri=~s/^\///;
6355: $uri=~s/\/$//;
6356: my ($udom, $uname);
6357: if ($getuserdir) {
6358: $udom = $userdomain;
6359: $uname = $username;
6360: } else {
6361: (undef,$udom,$uname)=split(/\//,$uri);
6362: if(defined($userdomain)) {
6363: $udom = $userdomain;
6364: }
6365: if(defined($username)) {
6366: $uname = $username;
6367: }
6368: }
6369: my ($dirRoot,$listing,@listing_results);
6370:
6371: $dirRoot = $perlvar{'lonDocRoot'};
6372: if (defined($getpropath)) {
6373: $dirRoot = &propath($udom,$uname);
6374: $dirRoot =~ s/\/$//;
6375: } elsif (defined($getuserdir)) {
6376: my $subdir=$uname.'__';
6377: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6378: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6379: ."/$udom/$subdir/$uname";
6380: } elsif (defined($alternateRoot)) {
6381: $dirRoot = $alternateRoot;
6382: }
6383:
6384: if($udom) {
6385: if($uname) {
6386: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6387: .$getuserdir.':'.&escape($dirRoot)
6388: .':'.&escape($uname).':'.&escape($udom),
6389: &homeserver($uname,$udom));
6390: if ($listing eq 'unknown_cmd') {
6391: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6392: &homeserver($uname,$udom));
6393: } else {
6394: @listing_results = map { &unescape($_); } split(/:/,$listing);
6395: }
6396: if ($listing eq 'unknown_cmd') {
6397: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6398: &homeserver($uname,$udom));
6399: @listing_results = split(/:/,$listing);
6400: } else {
6401: @listing_results = map { &unescape($_); } split(/:/,$listing);
6402: }
6403: return @listing_results;
6404: } elsif(!$alternateRoot) {
6405: my %allusers;
6406: my %servers = &get_servers($udom,'library');
6407: foreach my $tryserver (keys(%servers)) {
6408: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6409: &escape($udom),$tryserver);
6410: if ($listing eq 'unknown_cmd') {
6411: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6412: $udom, $tryserver);
6413: } else {
6414: @listing_results = map { &unescape($_); } split(/:/,$listing);
6415: }
6416: if ($listing eq 'unknown_cmd') {
6417: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6418: $udom, $tryserver);
6419: @listing_results = split(/:/,$listing);
6420: } else {
6421: @listing_results =
6422: map { &unescape($_); } split(/:/,$listing);
6423: }
6424: if ($listing_results[0] ne 'no_such_dir' &&
6425: $listing_results[0] ne 'empty' &&
6426: $listing_results[0] ne 'con_lost') {
6427: foreach my $line (@listing_results) {
6428: my ($entry) = split(/&/,$line,2);
6429: $allusers{$entry} = 1;
6430: }
6431: }
6432: }
6433: my $alluserstr='';
6434: foreach my $user (sort(keys(%allusers))) {
6435: $alluserstr.=$user.'&user:';
6436: }
6437: $alluserstr=~s/:$//;
6438: return split(/:/,$alluserstr);
6439: } else {
6440: return ('missing user name');
6441: }
6442: } elsif(!defined($getpropath)) {
6443: my @all_domains = sort(&all_domains());
6444: foreach my $domain (@all_domains) {
6445: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6446: }
6447: return @all_domains;
6448: } else {
6449: return ('missing domain');
6450: }
6451: }
6452:
6453: # --------------------------------------------- GetFileTimestamp
6454: # This function utilizes dirlist and returns the date stamp for
6455: # when it was last modified. It will also return an error of -1
6456: # if an error occurs
6457:
6458: sub GetFileTimestamp {
6459: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6460: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6461: $studentName = &LONCAPA::clean_username($studentName);
6462: my ($fileStat) =
6463: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6464: undef,$getuserdir);
6465: my @stats = split('&', $fileStat);
6466: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6467: # @stats contains first the filename, then the stat output
6468: return $stats[10]; # so this is 10 instead of 9.
6469: } else {
6470: return -1;
6471: }
6472: }
6473:
6474: sub stat_file {
6475: my ($uri) = @_;
6476: $uri = &clutter_with_no_wrapper($uri);
6477:
6478: my ($udom,$uname,$file);
6479: if ($uri =~ m-^/(uploaded|editupload)/-) {
6480: ($udom,$uname,$file) =
6481: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6482: $file = 'userfiles/'.$file;
6483: }
6484: if ($uri =~ m-^/res/-) {
6485: ($udom,$uname) =
6486: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6487: $file = $uri;
6488: }
6489:
6490: if (!$udom || !$uname || !$file) {
6491: # unable to handle the uri
6492: return ();
6493: }
6494: my $getpropath;
6495: if ($file =~ /^userfiles\//) {
6496: $getpropath = 1;
6497: }
6498: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6499: my @stats = split('&', $result);
6500:
6501: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6502: shift(@stats); #filename is first
6503: return @stats;
6504: }
6505: return ();
6506: }
6507:
6508: # -------------------------------------------------------- Value of a Condition
6509:
6510: # gets the value of a specific preevaluated condition
6511: # stored in the string $env{user.state.<cid>}
6512: # or looks up a condition reference in the bighash and if if hasn't
6513: # already been evaluated recurses into docondval to get the value of
6514: # the condition, then memoizing it to
6515: # $env{user.state.<cid>.<condition>}
6516: sub directcondval {
6517: my $number=shift;
6518: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6519: &Apache::lonuserstate::evalstate();
6520: }
6521: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6522: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6523: } elsif ($number =~ /^_/) {
6524: my $sub_condition;
6525: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6526: &GDBM_READER(),0640)) {
6527: $sub_condition=$bighash{'conditions'.$number};
6528: untie(%bighash);
6529: }
6530: my $value = &docondval($sub_condition);
6531: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6532: return $value;
6533: }
6534: if ($env{'user.state.'.$env{'request.course.id'}}) {
6535: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6536: } else {
6537: return 2;
6538: }
6539: }
6540:
6541: # get the collection of conditions for this resource
6542: sub condval {
6543: my $condidx=shift;
6544: my $allpathcond='';
6545: foreach my $cond (split(/\|/,$condidx)) {
6546: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6547: $allpathcond.=
6548: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6549: }
6550: }
6551: $allpathcond=~s/\|$//;
6552: return &docondval($allpathcond);
6553: }
6554:
6555: #evaluates an expression of conditions
6556: sub docondval {
6557: my ($allpathcond) = @_;
6558: my $result=0;
6559: if ($env{'request.course.id'}
6560: && defined($allpathcond)) {
6561: my $operand='|';
6562: my @stack;
6563: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6564: if ($chunk eq '(') {
6565: push @stack,($operand,$result);
6566: } elsif ($chunk eq ')') {
6567: my $before=pop @stack;
6568: if (pop @stack eq '&') {
6569: $result=$result>$before?$before:$result;
6570: } else {
6571: $result=$result>$before?$result:$before;
6572: }
6573: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6574: $operand=$chunk;
6575: } else {
6576: my $new=directcondval($chunk);
6577: if ($operand eq '&') {
6578: $result=$result>$new?$new:$result;
6579: } else {
6580: $result=$result>$new?$result:$new;
6581: }
6582: }
6583: }
6584: }
6585: return $result;
6586: }
6587:
6588: # ---------------------------------------------------- Devalidate courseresdata
6589:
6590: sub devalidatecourseresdata {
6591: my ($coursenum,$coursedomain)=@_;
6592: my $hashid=$coursenum.':'.$coursedomain;
6593: &devalidate_cache_new('courseres',$hashid);
6594: }
6595:
6596:
6597: # --------------------------------------------------- Course Resourcedata Query
6598: #
6599: # Parameters:
6600: # $coursenum - Number of the course.
6601: # $coursedomain - Domain at which the course was created.
6602: # Returns:
6603: # A hash of the course parameters along (I think) with timestamps
6604: # and version info.
6605:
6606: sub get_courseresdata {
6607: my ($coursenum,$coursedomain)=@_;
6608: my $coursehom=&homeserver($coursenum,$coursedomain);
6609: my $hashid=$coursenum.':'.$coursedomain;
6610: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6611: my %dumpreply;
6612: unless (defined($cached)) {
6613: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6614: $result=\%dumpreply;
6615: my ($tmp) = keys(%dumpreply);
6616: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6617: &do_cache_new('courseres',$hashid,$result,600);
6618: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6619: return $tmp;
6620: } elsif ($tmp =~ /^(error)/) {
6621: $result=undef;
6622: &do_cache_new('courseres',$hashid,$result,600);
6623: }
6624: }
6625: return $result;
6626: }
6627:
6628: sub devalidateuserresdata {
6629: my ($uname,$udom)=@_;
6630: my $hashid="$udom:$uname";
6631: &devalidate_cache_new('userres',$hashid);
6632: }
6633:
6634: sub get_userresdata {
6635: my ($uname,$udom)=@_;
6636: #most student don\'t have any data set, check if there is some data
6637: if (&EXT_cache_status($udom,$uname)) { return undef; }
6638:
6639: my $hashid="$udom:$uname";
6640: my ($result,$cached)=&is_cached_new('userres',$hashid);
6641: if (!defined($cached)) {
6642: my %resourcedata=&dump('resourcedata',$udom,$uname);
6643: $result=\%resourcedata;
6644: &do_cache_new('userres',$hashid,$result,600);
6645: }
6646: my ($tmp)=keys(%$result);
6647: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6648: return $result;
6649: }
6650: #error 2 occurs when the .db doesn't exist
6651: if ($tmp!~/error: 2 /) {
6652: &logthis("<font color=\"blue\">WARNING:".
6653: " Trying to get resource data for ".
6654: $uname." at ".$udom.": ".
6655: $tmp."</font>");
6656: } elsif ($tmp=~/error: 2 /) {
6657: #&EXT_cache_set($udom,$uname);
6658: &do_cache_new('userres',$hashid,undef,600);
6659: undef($tmp); # not really an error so don't send it back
6660: }
6661: return $tmp;
6662: }
6663: #----------------------------------------------- resdata - return resource data
6664: # Purpose:
6665: # Return resource data for either users or for a course.
6666: # Parameters:
6667: # $name - Course/user name.
6668: # $domain - Name of the domain the user/course is registered on.
6669: # $type - Type of thing $name is (must be 'course' or 'user'
6670: # @which - Array of names of resources desired.
6671: # Returns:
6672: # The value of the first reasource in @which that is found in the
6673: # resource hash.
6674: # Exceptional Conditions:
6675: # If the $type passed in is not valid (not the string 'course' or
6676: # 'user', an undefined reference is returned.
6677: # If none of the resources are found, an undef is returned
6678: sub resdata {
6679: my ($name,$domain,$type,@which)=@_;
6680: my $result;
6681: if ($type eq 'course') {
6682: $result=&get_courseresdata($name,$domain);
6683: } elsif ($type eq 'user') {
6684: $result=&get_userresdata($name,$domain);
6685: }
6686: if (!ref($result)) { return $result; }
6687: foreach my $item (@which) {
6688: if (defined($result->{$item->[0]})) {
6689: return [$result->{$item->[0]},$item->[1]];
6690: }
6691: }
6692: return undef;
6693: }
6694:
6695: #
6696: # EXT resource caching routines
6697: #
6698:
6699: sub clear_EXT_cache_status {
6700: &delenv('cache.EXT.');
6701: }
6702:
6703: sub EXT_cache_status {
6704: my ($target_domain,$target_user) = @_;
6705: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6706: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6707: # We know already the user has no data
6708: return 1;
6709: } else {
6710: return 0;
6711: }
6712: }
6713:
6714: sub EXT_cache_set {
6715: my ($target_domain,$target_user) = @_;
6716: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6717: #&appenv({$cachename => time});
6718: }
6719:
6720: # --------------------------------------------------------- Value of a Variable
6721: sub EXT {
6722:
6723: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6724: unless ($varname) { return ''; }
6725: #get real user name/domain, courseid and symb
6726: my $courseid;
6727: my $publicuser;
6728: if ($symbparm) {
6729: $symbparm=&get_symb_from_alias($symbparm);
6730: }
6731: if (!($uname && $udom)) {
6732: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6733: if (!$symbparm) { $symbparm=$cursymb; }
6734: } else {
6735: $courseid=$env{'request.course.id'};
6736: }
6737: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6738: my $rest;
6739: if (defined($therest[0])) {
6740: $rest=join('.',@therest);
6741: } else {
6742: $rest='';
6743: }
6744:
6745: my $qualifierrest=$qualifier;
6746: if ($rest) { $qualifierrest.='.'.$rest; }
6747: my $spacequalifierrest=$space;
6748: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6749: if ($realm eq 'user') {
6750: # --------------------------------------------------------------- user.resource
6751: if ($space eq 'resource') {
6752: if ( (defined($Apache::lonhomework::parsing_a_problem)
6753: || defined($Apache::lonhomework::parsing_a_task))
6754: &&
6755: ($symbparm eq &symbread()) ) {
6756: # if we are in the middle of processing the resource the
6757: # get the value we are planning on committing
6758: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6759: return $Apache::lonhomework::results{$qualifierrest};
6760: } else {
6761: return $Apache::lonhomework::history{$qualifierrest};
6762: }
6763: } else {
6764: my %restored;
6765: if ($publicuser || $env{'request.state'} eq 'construct') {
6766: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6767: } else {
6768: %restored=&restore($symbparm,$courseid,$udom,$uname);
6769: }
6770: return $restored{$qualifierrest};
6771: }
6772: # ----------------------------------------------------------------- user.access
6773: } elsif ($space eq 'access') {
6774: # FIXME - not supporting calls for a specific user
6775: return &allowed($qualifier,$rest);
6776: # ------------------------------------------ user.preferences, user.environment
6777: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6778: if (($uname eq $env{'user.name'}) &&
6779: ($udom eq $env{'user.domain'})) {
6780: return $env{join('.',('environment',$qualifierrest))};
6781: } else {
6782: my %returnhash;
6783: if (!$publicuser) {
6784: %returnhash=&userenvironment($udom,$uname,
6785: $qualifierrest);
6786: }
6787: return $returnhash{$qualifierrest};
6788: }
6789: # ----------------------------------------------------------------- user.course
6790: } elsif ($space eq 'course') {
6791: # FIXME - not supporting calls for a specific user
6792: return $env{join('.',('request.course',$qualifier))};
6793: # ------------------------------------------------------------------- user.role
6794: } elsif ($space eq 'role') {
6795: # FIXME - not supporting calls for a specific user
6796: my ($role,$where)=split(/\./,$env{'request.role'});
6797: if ($qualifier eq 'value') {
6798: return $role;
6799: } elsif ($qualifier eq 'extent') {
6800: return $where;
6801: }
6802: # ----------------------------------------------------------------- user.domain
6803: } elsif ($space eq 'domain') {
6804: return $udom;
6805: # ------------------------------------------------------------------- user.name
6806: } elsif ($space eq 'name') {
6807: return $uname;
6808: # ---------------------------------------------------- Any other user namespace
6809: } else {
6810: my %reply;
6811: if (!$publicuser) {
6812: %reply=&get($space,[$qualifierrest],$udom,$uname);
6813: }
6814: return $reply{$qualifierrest};
6815: }
6816: } elsif ($realm eq 'query') {
6817: # ---------------------------------------------- pull stuff out of query string
6818: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6819: [$spacequalifierrest]);
6820: return $env{'form.'.$spacequalifierrest};
6821: } elsif ($realm eq 'request') {
6822: # ------------------------------------------------------------- request.browser
6823: if ($space eq 'browser') {
6824: if ($qualifier eq 'textremote') {
6825: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6826: return 1;
6827: } else {
6828: return 0;
6829: }
6830: } else {
6831: return $env{'browser.'.$qualifier};
6832: }
6833: # ------------------------------------------------------------ request.filename
6834: } else {
6835: return $env{'request.'.$spacequalifierrest};
6836: }
6837: } elsif ($realm eq 'course') {
6838: # ---------------------------------------------------------- course.description
6839: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6840: } elsif ($realm eq 'resource') {
6841:
6842: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6843: if (!$symbparm) { $symbparm=&symbread(); }
6844: }
6845:
6846: if ($space eq 'title') {
6847: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6848: return &gettitle($symbparm);
6849: }
6850:
6851: if ($space eq 'map') {
6852: my ($map) = &decode_symb($symbparm);
6853: return &symbread($map);
6854: }
6855: if ($space eq 'filename') {
6856: if ($symbparm) {
6857: return &clutter((&decode_symb($symbparm))[2]);
6858: }
6859: return &hreflocation('',$env{'request.filename'});
6860: }
6861:
6862: my ($section, $group, @groups);
6863: my ($courselevelm,$courselevel);
6864: if ($symbparm && defined($courseid) &&
6865: $courseid eq $env{'request.course.id'}) {
6866:
6867: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6868:
6869: # ----------------------------------------------------- Cascading lookup scheme
6870: my $symbp=$symbparm;
6871: my $mapp=&deversion((&decode_symb($symbp))[0]);
6872:
6873: my $symbparm=$symbp.'.'.$spacequalifierrest;
6874: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6875:
6876: if (($env{'user.name'} eq $uname) &&
6877: ($env{'user.domain'} eq $udom)) {
6878: $section=$env{'request.course.sec'};
6879: @groups = split(/:/,$env{'request.course.groups'});
6880: @groups=&sort_course_groups($courseid,@groups);
6881: } else {
6882: if (! defined($usection)) {
6883: $section=&getsection($udom,$uname,$courseid);
6884: } else {
6885: $section = $usection;
6886: }
6887: @groups = &get_users_groups($udom,$uname,$courseid);
6888: }
6889:
6890: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6891: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6892: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6893:
6894: $courselevel=$courseid.'.'.$spacequalifierrest;
6895: my $courselevelr=$courseid.'.'.$symbparm;
6896: $courselevelm=$courseid.'.'.$mapparm;
6897:
6898: # ----------------------------------------------------------- first, check user
6899:
6900: my $userreply=&resdata($uname,$udom,'user',
6901: ([$courselevelr,'resource'],
6902: [$courselevelm,'map' ],
6903: [$courselevel, 'course' ]));
6904: if (defined($userreply)) { return &get_reply($userreply); }
6905:
6906: # ------------------------------------------------ second, check some of course
6907: my $coursereply;
6908: if (@groups > 0) {
6909: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6910: $mapparm,$spacequalifierrest);
6911: if (defined($coursereply)) { return &get_reply($coursereply); }
6912: }
6913:
6914: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6915: $env{'course.'.$courseid.'.domain'},
6916: 'course',
6917: ([$seclevelr, 'resource'],
6918: [$seclevelm, 'map' ],
6919: [$seclevel, 'course' ],
6920: [$courselevelr,'resource']));
6921: if (defined($coursereply)) { return &get_reply($coursereply); }
6922:
6923: # ------------------------------------------------------ third, check map parms
6924: my %parmhash=();
6925: my $thisparm='';
6926: if (tie(%parmhash,'GDBM_File',
6927: $env{'request.course.fn'}.'_parms.db',
6928: &GDBM_READER(),0640)) {
6929: $thisparm=$parmhash{$symbparm};
6930: untie(%parmhash);
6931: }
6932: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6933: }
6934: # ------------------------------------------ fourth, look in resource metadata
6935:
6936: $spacequalifierrest=~s/\./\_/;
6937: my $filename;
6938: if (!$symbparm) { $symbparm=&symbread(); }
6939: if ($symbparm) {
6940: $filename=(&decode_symb($symbparm))[2];
6941: } else {
6942: $filename=$env{'request.filename'};
6943: }
6944: my $metadata=&metadata($filename,$spacequalifierrest);
6945: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6946: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6947: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6948:
6949: # ---------------------------------------------- fourth, look in rest of course
6950: if ($symbparm && defined($courseid) &&
6951: $courseid eq $env{'request.course.id'}) {
6952: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6953: $env{'course.'.$courseid.'.domain'},
6954: 'course',
6955: ([$courselevelm,'map' ],
6956: [$courselevel, 'course']));
6957: if (defined($coursereply)) { return &get_reply($coursereply); }
6958: }
6959: # ------------------------------------------------------------------ Cascade up
6960: unless ($space eq '0') {
6961: my @parts=split(/_/,$space);
6962: my $id=pop(@parts);
6963: my $part=join('_',@parts);
6964: if ($part eq '') { $part='0'; }
6965: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6966: $symbparm,$udom,$uname,$section,1);
6967: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6968: }
6969: if ($recurse) { return undef; }
6970: my $pack_def=&packages_tab_default($filename,$varname);
6971: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6972: # ---------------------------------------------------- Any other user namespace
6973: } elsif ($realm eq 'environment') {
6974: # ----------------------------------------------------------------- environment
6975: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6976: return $env{'environment.'.$spacequalifierrest};
6977: } else {
6978: if ($uname eq 'anonymous' && $udom eq '') {
6979: return '';
6980: }
6981: my %returnhash=&userenvironment($udom,$uname,
6982: $spacequalifierrest);
6983: return $returnhash{$spacequalifierrest};
6984: }
6985: } elsif ($realm eq 'system') {
6986: # ----------------------------------------------------------------- system.time
6987: if ($space eq 'time') {
6988: return time;
6989: }
6990: } elsif ($realm eq 'server') {
6991: # ----------------------------------------------------------------- system.time
6992: if ($space eq 'name') {
6993: return $ENV{'SERVER_NAME'};
6994: }
6995: }
6996: return '';
6997: }
6998:
6999: sub get_reply {
7000: my ($reply_value) = @_;
7001: if (ref($reply_value) eq 'ARRAY') {
7002: if (wantarray) {
7003: return @$reply_value;
7004: }
7005: return $reply_value->[0];
7006: } else {
7007: return $reply_value;
7008: }
7009: }
7010:
7011: sub check_group_parms {
7012: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
7013: my @groupitems = ();
7014: my $resultitem;
7015: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
7016: foreach my $group (@{$groups}) {
7017: foreach my $level (@levels) {
7018: my $item = $courseid.'.['.$group.'].'.$level->[0];
7019: push(@groupitems,[$item,$level->[1]]);
7020: }
7021: }
7022: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
7023: $env{'course.'.$courseid.'.domain'},
7024: 'course',@groupitems);
7025: return $coursereply;
7026: }
7027:
7028: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
7029: my ($courseid,@groups) = @_;
7030: @groups = sort(@groups);
7031: return @groups;
7032: }
7033:
7034: sub packages_tab_default {
7035: my ($uri,$varname)=@_;
7036: my (undef,$part,$name)=split(/\./,$varname);
7037:
7038: my (@extension,@specifics,$do_default);
7039: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7040: my ($pack_type,$pack_part)=split(/_/,$package,2);
7041: if ($pack_type eq 'default') {
7042: $do_default=1;
7043: } elsif ($pack_type eq 'extension') {
7044: push(@extension,[$package,$pack_type,$pack_part]);
7045: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7046: # only look at packages defaults for packages that this id is
7047: push(@specifics,[$package,$pack_type,$pack_part]);
7048: }
7049: }
7050: # first look for a package that matches the requested part id
7051: foreach my $package (@specifics) {
7052: my (undef,$pack_type,$pack_part)=@{$package};
7053: next if ($pack_part ne $part);
7054: if (defined($packagetab{"$pack_type&$name&default"})) {
7055: return $packagetab{"$pack_type&$name&default"};
7056: }
7057: }
7058: # look for any possible matching non extension_ package
7059: foreach my $package (@specifics) {
7060: my (undef,$pack_type,$pack_part)=@{$package};
7061: if (defined($packagetab{"$pack_type&$name&default"})) {
7062: return $packagetab{"$pack_type&$name&default"};
7063: }
7064: if ($pack_type eq 'part') { $pack_part='0'; }
7065: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7066: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7067: }
7068: }
7069: # look for any posible extension_ match
7070: foreach my $package (@extension) {
7071: my ($package,$pack_type)=@{$package};
7072: if (defined($packagetab{"$pack_type&$name&default"})) {
7073: return $packagetab{"$pack_type&$name&default"};
7074: }
7075: if (defined($packagetab{$package."&$name&default"})) {
7076: return $packagetab{$package."&$name&default"};
7077: }
7078: }
7079: # look for a global default setting
7080: if ($do_default && defined($packagetab{"default&$name&default"})) {
7081: return $packagetab{"default&$name&default"};
7082: }
7083: return undef;
7084: }
7085:
7086: sub add_prefix_and_part {
7087: my ($prefix,$part)=@_;
7088: my $keyroot;
7089: if (defined($prefix) && $prefix !~ /^__/) {
7090: # prefix that has a part already
7091: $keyroot=$prefix;
7092: } elsif (defined($prefix)) {
7093: # prefix that is missing a part
7094: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7095: } else {
7096: # no prefix at all
7097: if (defined($part)) { $keyroot='_'.$part; }
7098: }
7099: return $keyroot;
7100: }
7101:
7102: # ---------------------------------------------------------------- Get metadata
7103:
7104: my %metaentry;
7105: sub metadata {
7106: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7107: $uri=&declutter($uri);
7108: # if it is a non metadata possible uri return quickly
7109: if (($uri eq '') ||
7110: (($uri =~ m|^/*adm/|) &&
7111: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7112: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7113: return undef;
7114: }
7115: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7116: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7117: return undef;
7118: }
7119: my $filename=$uri;
7120: $uri=~s/\.meta$//;
7121: #
7122: # Is the metadata already cached?
7123: # Look at timestamp of caching
7124: # Everything is cached by the main uri, libraries are never directly cached
7125: #
7126: if (!defined($liburi)) {
7127: my ($result,$cached)=&is_cached_new('meta',$uri);
7128: if (defined($cached)) { return $result->{':'.$what}; }
7129: }
7130: {
7131: #
7132: # Is this a recursive call for a library?
7133: #
7134: # if (! exists($metacache{$uri})) {
7135: # $metacache{$uri}={};
7136: # }
7137: my $cachetime = 60*60;
7138: if ($liburi) {
7139: $liburi=&declutter($liburi);
7140: $filename=$liburi;
7141: } else {
7142: &devalidate_cache_new('meta',$uri);
7143: undef(%metaentry);
7144: }
7145: my %metathesekeys=();
7146: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7147: my $metastring;
7148: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7149: my $which = &hreflocation('','/'.($liburi || $uri));
7150: $metastring =
7151: &Apache::lonnet::ssi_body($which,
7152: ('grade_target' => 'meta'));
7153: $cachetime = 1; # only want this cached in the child not long term
7154: } elsif ($uri !~ m -^(editupload)/-) {
7155: my $file=&filelocation('',&clutter($filename));
7156: #push(@{$metaentry{$uri.'.file'}},$file);
7157: $metastring=&getfile($file);
7158: }
7159: my $parser=HTML::LCParser->new(\$metastring);
7160: my $token;
7161: undef %metathesekeys;
7162: while ($token=$parser->get_token) {
7163: if ($token->[0] eq 'S') {
7164: if (defined($token->[2]->{'package'})) {
7165: #
7166: # This is a package - get package info
7167: #
7168: my $package=$token->[2]->{'package'};
7169: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7170: if (defined($token->[2]->{'id'})) {
7171: $keyroot.='_'.$token->[2]->{'id'};
7172: }
7173: if ($metaentry{':packages'}) {
7174: $metaentry{':packages'}.=','.$package.$keyroot;
7175: } else {
7176: $metaentry{':packages'}=$package.$keyroot;
7177: }
7178: foreach my $pack_entry (keys(%packagetab)) {
7179: my $part=$keyroot;
7180: $part=~s/^\_//;
7181: if ($pack_entry=~/^\Q$package\E\&/ ||
7182: $pack_entry=~/^\Q$package\E_0\&/) {
7183: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7184: # ignore package.tab specified default values
7185: # here &package_tab_default() will fetch those
7186: if ($subp eq 'default') { next; }
7187: my $value=$packagetab{$pack_entry};
7188: my $unikey;
7189: if ($pack =~ /_0$/) {
7190: $unikey='parameter_0_'.$name;
7191: $part=0;
7192: } else {
7193: $unikey='parameter'.$keyroot.'_'.$name;
7194: }
7195: if ($subp eq 'display') {
7196: $value.=' [Part: '.$part.']';
7197: }
7198: $metaentry{':'.$unikey.'.part'}=$part;
7199: $metathesekeys{$unikey}=1;
7200: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7201: $metaentry{':'.$unikey.'.'.$subp}=$value;
7202: }
7203: if (defined($metaentry{':'.$unikey.'.default'})) {
7204: $metaentry{':'.$unikey}=
7205: $metaentry{':'.$unikey.'.default'};
7206: }
7207: }
7208: }
7209: } else {
7210: #
7211: # This is not a package - some other kind of start tag
7212: #
7213: my $entry=$token->[1];
7214: my $unikey;
7215: if ($entry eq 'import') {
7216: $unikey='';
7217: } else {
7218: $unikey=$entry;
7219: }
7220: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7221:
7222: if (defined($token->[2]->{'id'})) {
7223: $unikey.='_'.$token->[2]->{'id'};
7224: }
7225:
7226: if ($entry eq 'import') {
7227: #
7228: # Importing a library here
7229: #
7230: if ($depthcount<20) {
7231: my $location=$parser->get_text('/import');
7232: my $dir=$filename;
7233: $dir=~s|[^/]*$||;
7234: $location=&filelocation($dir,$location);
7235: my $metadata =
7236: &metadata($uri,'keys', $location,$unikey,
7237: $depthcount+1);
7238: foreach my $meta (split(',',$metadata)) {
7239: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7240: $metathesekeys{$meta}=1;
7241: }
7242: }
7243: } else {
7244:
7245: if (defined($token->[2]->{'name'})) {
7246: $unikey.='_'.$token->[2]->{'name'};
7247: }
7248: $metathesekeys{$unikey}=1;
7249: foreach my $param (@{$token->[3]}) {
7250: $metaentry{':'.$unikey.'.'.$param} =
7251: $token->[2]->{$param};
7252: }
7253: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7254: my $default=$metaentry{':'.$unikey.'.default'};
7255: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7256: # only ws inside the tag, and not in default, so use default
7257: # as value
7258: $metaentry{':'.$unikey}=$default;
7259: } elsif ( $internaltext =~ /\S/ ) {
7260: # something interesting inside the tag
7261: $metaentry{':'.$unikey}=$internaltext;
7262: } else {
7263: # no interesting values, don't set a default
7264: }
7265: # end of not-a-package not-a-library import
7266: }
7267: # end of not-a-package start tag
7268: }
7269: # the next is the end of "start tag"
7270: }
7271: }
7272: my ($extension) = ($uri =~ /\.(\w+)$/);
7273: $extension = lc($extension);
7274: if ($extension eq 'htm') { $extension='html'; }
7275:
7276: foreach my $key (keys(%packagetab)) {
7277: #no specific packages #how's our extension
7278: if ($key!~/^extension_\Q$extension\E&/) { next; }
7279: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7280: \%metathesekeys);
7281: }
7282:
7283: if (!exists($metaentry{':packages'})
7284: || $packagetab{"import_defaults&extension_$extension"}) {
7285: foreach my $key (keys(%packagetab)) {
7286: #no specific packages well let's get default then
7287: if ($key!~/^default&/) { next; }
7288: &metadata_create_package_def($uri,$key,'default',
7289: \%metathesekeys);
7290: }
7291: }
7292: # are there custom rights to evaluate
7293: if ($metaentry{':copyright'} eq 'custom') {
7294:
7295: #
7296: # Importing a rights file here
7297: #
7298: unless ($depthcount) {
7299: my $location=$metaentry{':customdistributionfile'};
7300: my $dir=$filename;
7301: $dir=~s|[^/]*$||;
7302: $location=&filelocation($dir,$location);
7303: my $rights_metadata =
7304: &metadata($uri,'keys',$location,'_rights',
7305: $depthcount+1);
7306: foreach my $rights (split(',',$rights_metadata)) {
7307: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7308: $metathesekeys{$rights}=1;
7309: }
7310: }
7311: }
7312: # uniqifiy package listing
7313: my %seen;
7314: my @uniq_packages =
7315: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7316: $metaentry{':packages'} = join(',',@uniq_packages);
7317:
7318: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7319: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7320: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7321: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7322: # this is the end of "was not already recently cached
7323: }
7324: return $metaentry{':'.$what};
7325: }
7326:
7327: sub metadata_create_package_def {
7328: my ($uri,$key,$package,$metathesekeys)=@_;
7329: my ($pack,$name,$subp)=split(/\&/,$key);
7330: if ($subp eq 'default') { next; }
7331:
7332: if (defined($metaentry{':packages'})) {
7333: $metaentry{':packages'}.=','.$package;
7334: } else {
7335: $metaentry{':packages'}=$package;
7336: }
7337: my $value=$packagetab{$key};
7338: my $unikey;
7339: $unikey='parameter_0_'.$name;
7340: $metaentry{':'.$unikey.'.part'}=0;
7341: $$metathesekeys{$unikey}=1;
7342: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7343: $metaentry{':'.$unikey.'.'.$subp}=$value;
7344: }
7345: if (defined($metaentry{':'.$unikey.'.default'})) {
7346: $metaentry{':'.$unikey}=
7347: $metaentry{':'.$unikey.'.default'};
7348: }
7349: }
7350:
7351: sub metadata_generate_part0 {
7352: my ($metadata,$metacache,$uri) = @_;
7353: my %allnames;
7354: foreach my $metakey (keys(%$metadata)) {
7355: if ($metakey=~/^parameter\_(.*)/) {
7356: my $part=$$metacache{':'.$metakey.'.part'};
7357: my $name=$$metacache{':'.$metakey.'.name'};
7358: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7359: $allnames{$name}=$part;
7360: }
7361: }
7362: }
7363: foreach my $name (keys(%allnames)) {
7364: $$metadata{"parameter_0_$name"}=1;
7365: my $key=":parameter_0_$name";
7366: $$metacache{"$key.part"}='0';
7367: $$metacache{"$key.name"}=$name;
7368: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7369: $allnames{$name}.'_'.$name.
7370: '.type'};
7371: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7372: '.display'};
7373: my $expr='[Part: '.$allnames{$name}.']';
7374: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7375: $$metacache{"$key.display"}=$olddis;
7376: }
7377: }
7378:
7379: # ------------------------------------------------------ Devalidate title cache
7380:
7381: sub devalidate_title_cache {
7382: my ($url)=@_;
7383: if (!$env{'request.course.id'}) { return; }
7384: my $symb=&symbread($url);
7385: if (!$symb) { return; }
7386: my $key=$env{'request.course.id'}."\0".$symb;
7387: &devalidate_cache_new('title',$key);
7388: }
7389:
7390: # ------------------------------------------------- Get the title of a resource
7391:
7392: sub gettitle {
7393: my $urlsymb=shift;
7394: my $symb=&symbread($urlsymb);
7395: if ($symb) {
7396: my $key=$env{'request.course.id'}."\0".$symb;
7397: my ($result,$cached)=&is_cached_new('title',$key);
7398: if (defined($cached)) {
7399: return $result;
7400: }
7401: my ($map,$resid,$url)=&decode_symb($symb);
7402: my $title='';
7403: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7404: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7405: } else {
7406: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7407: &GDBM_READER(),0640)) {
7408: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7409: $title=$bighash{'title_'.$mapid.'.'.$resid};
7410: untie(%bighash);
7411: }
7412: }
7413: $title=~s/\&colon\;/\:/gs;
7414: if ($title) {
7415: return &do_cache_new('title',$key,$title,600);
7416: }
7417: $urlsymb=$url;
7418: }
7419: my $title=&metadata($urlsymb,'title');
7420: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7421: return $title;
7422: }
7423:
7424: sub get_slot {
7425: my ($which,$cnum,$cdom)=@_;
7426: if (!$cnum || !$cdom) {
7427: (undef,my $courseid)=&whichuser();
7428: $cdom=$env{'course.'.$courseid.'.domain'};
7429: $cnum=$env{'course.'.$courseid.'.num'};
7430: }
7431: my $key=join("\0",'slots',$cdom,$cnum,$which);
7432: my %slotinfo;
7433: if (exists($remembered{$key})) {
7434: $slotinfo{$which} = $remembered{$key};
7435: } else {
7436: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7437: &Apache::lonhomework::showhash(%slotinfo);
7438: my ($tmp)=keys(%slotinfo);
7439: if ($tmp=~/^error:/) { return (); }
7440: $remembered{$key} = $slotinfo{$which};
7441: }
7442: if (ref($slotinfo{$which}) eq 'HASH') {
7443: return %{$slotinfo{$which}};
7444: }
7445: return $slotinfo{$which};
7446: }
7447: # ------------------------------------------------- Update symbolic store links
7448:
7449: sub symblist {
7450: my ($mapname,%newhash)=@_;
7451: $mapname=&deversion(&declutter($mapname));
7452: my %hash;
7453: if (($env{'request.course.fn'}) && (%newhash)) {
7454: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7455: &GDBM_WRCREAT(),0640)) {
7456: foreach my $url (keys %newhash) {
7457: next if ($url eq 'last_known'
7458: && $env{'form.no_update_last_known'});
7459: $hash{declutter($url)}=&encode_symb($mapname,
7460: $newhash{$url}->[1],
7461: $newhash{$url}->[0]);
7462: }
7463: if (untie(%hash)) {
7464: return 'ok';
7465: }
7466: }
7467: }
7468: return 'error';
7469: }
7470:
7471: # --------------------------------------------------------------- Verify a symb
7472:
7473: sub symbverify {
7474: my ($symb,$thisurl)=@_;
7475: my $thisfn=$thisurl;
7476: $thisfn=&declutter($thisfn);
7477: # direct jump to resource in page or to a sequence - will construct own symbs
7478: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7479: # check URL part
7480: my ($map,$resid,$url)=&decode_symb($symb);
7481:
7482: unless ($url eq $thisfn) { return 0; }
7483:
7484: $symb=&symbclean($symb);
7485: $thisurl=&deversion($thisurl);
7486: $thisfn=&deversion($thisfn);
7487:
7488: my %bighash;
7489: my $okay=0;
7490:
7491: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7492: &GDBM_READER(),0640)) {
7493: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7494: unless ($ids) {
7495: $ids=$bighash{'ids_/'.$thisurl};
7496: }
7497: if ($ids) {
7498: # ------------------------------------------------------------------- Has ID(s)
7499: foreach my $id (split(/\,/,$ids)) {
7500: my ($mapid,$resid)=split(/\./,$id);
7501: if (
7502: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7503: eq $symb) {
7504: if (($env{'request.role.adv'}) ||
7505: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7506: $okay=1;
7507: }
7508: }
7509: }
7510: }
7511: untie(%bighash);
7512: }
7513: return $okay;
7514: }
7515:
7516: # --------------------------------------------------------------- Clean-up symb
7517:
7518: sub symbclean {
7519: my $symb=shift;
7520: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7521: # remove version from map
7522: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7523:
7524: # remove version from URL
7525: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7526:
7527: # remove wrapper
7528:
7529: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7530: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7531: return $symb;
7532: }
7533:
7534: # ---------------------------------------------- Split symb to find map and url
7535:
7536: sub encode_symb {
7537: my ($map,$resid,$url)=@_;
7538: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7539: }
7540:
7541: sub decode_symb {
7542: my $symb=shift;
7543: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7544: my ($map,$resid,$url)=split(/___/,$symb);
7545: return (&fixversion($map),$resid,&fixversion($url));
7546: }
7547:
7548: sub fixversion {
7549: my $fn=shift;
7550: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7551: my %bighash;
7552: my $uri=&clutter($fn);
7553: my $key=$env{'request.course.id'}.'_'.$uri;
7554: # is this cached?
7555: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7556: if (defined($cached)) { return $result; }
7557: # unfortunately not cached, or expired
7558: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7559: &GDBM_READER(),0640)) {
7560: if ($bighash{'version_'.$uri}) {
7561: my $version=$bighash{'version_'.$uri};
7562: unless (($version eq 'mostrecent') ||
7563: ($version==&getversion($uri))) {
7564: $uri=~s/\.(\w+)$/\.$version\.$1/;
7565: }
7566: }
7567: untie %bighash;
7568: }
7569: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7570: }
7571:
7572: sub deversion {
7573: my $url=shift;
7574: $url=~s/\.\d+\.(\w+)$/\.$1/;
7575: return $url;
7576: }
7577:
7578: # ------------------------------------------------------ Return symb list entry
7579:
7580: sub symbread {
7581: my ($thisfn,$donotrecurse)=@_;
7582: my $cache_str='request.symbread.cached.'.$thisfn;
7583: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7584: # no filename provided? try from environment
7585: unless ($thisfn) {
7586: if ($env{'request.symb'}) {
7587: return $env{$cache_str}=&symbclean($env{'request.symb'});
7588: }
7589: $thisfn=$env{'request.filename'};
7590: }
7591: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7592: # is that filename actually a symb? Verify, clean, and return
7593: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7594: if (&symbverify($thisfn,$1)) {
7595: return $env{$cache_str}=&symbclean($thisfn);
7596: }
7597: }
7598: $thisfn=declutter($thisfn);
7599: my %hash;
7600: my %bighash;
7601: my $syval='';
7602: if (($env{'request.course.fn'}) && ($thisfn)) {
7603: my $targetfn = $thisfn;
7604: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7605: $targetfn = 'adm/wrapper/'.$thisfn;
7606: }
7607: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7608: $targetfn=$1;
7609: }
7610: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7611: &GDBM_READER(),0640)) {
7612: $syval=$hash{$targetfn};
7613: untie(%hash);
7614: }
7615: # ---------------------------------------------------------- There was an entry
7616: if ($syval) {
7617: #unless ($syval=~/\_\d+$/) {
7618: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7619: #&appenv({'request.ambiguous' => $thisfn});
7620: #return $env{$cache_str}='';
7621: #}
7622: #$syval.=$1;
7623: #}
7624: } else {
7625: # ------------------------------------------------------- Was not in symb table
7626: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7627: &GDBM_READER(),0640)) {
7628: # ---------------------------------------------- Get ID(s) for current resource
7629: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7630: unless ($ids) {
7631: $ids=$bighash{'ids_/'.$thisfn};
7632: }
7633: unless ($ids) {
7634: # alias?
7635: $ids=$bighash{'mapalias_'.$thisfn};
7636: }
7637: if ($ids) {
7638: # ------------------------------------------------------------------- Has ID(s)
7639: my @possibilities=split(/\,/,$ids);
7640: if ($#possibilities==0) {
7641: # ----------------------------------------------- There is only one possibility
7642: my ($mapid,$resid)=split(/\./,$ids);
7643: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7644: $resid,$thisfn);
7645: } elsif (!$donotrecurse) {
7646: # ------------------------------------------ There is more than one possibility
7647: my $realpossible=0;
7648: foreach my $id (@possibilities) {
7649: my $file=$bighash{'src_'.$id};
7650: if (&allowed('bre',$file)) {
7651: my ($mapid,$resid)=split(/\./,$id);
7652: if ($bighash{'map_type_'.$mapid} ne 'page') {
7653: $realpossible++;
7654: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7655: $resid,$thisfn);
7656: }
7657: }
7658: }
7659: if ($realpossible!=1) { $syval=''; }
7660: } else {
7661: $syval='';
7662: }
7663: }
7664: untie(%bighash)
7665: }
7666: }
7667: if ($syval) {
7668: return $env{$cache_str}=$syval;
7669: }
7670: }
7671: &appenv({'request.ambiguous' => $thisfn});
7672: return $env{$cache_str}='';
7673: }
7674:
7675: # ---------------------------------------------------------- Return random seed
7676:
7677: sub numval {
7678: my $txt=shift;
7679: $txt=~tr/A-J/0-9/;
7680: $txt=~tr/a-j/0-9/;
7681: $txt=~tr/K-T/0-9/;
7682: $txt=~tr/k-t/0-9/;
7683: $txt=~tr/U-Z/0-5/;
7684: $txt=~tr/u-z/0-5/;
7685: $txt=~s/\D//g;
7686: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7687: return int($txt);
7688: }
7689:
7690: sub numval2 {
7691: my $txt=shift;
7692: $txt=~tr/A-J/0-9/;
7693: $txt=~tr/a-j/0-9/;
7694: $txt=~tr/K-T/0-9/;
7695: $txt=~tr/k-t/0-9/;
7696: $txt=~tr/U-Z/0-5/;
7697: $txt=~tr/u-z/0-5/;
7698: $txt=~s/\D//g;
7699: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7700: my $total;
7701: foreach my $val (@txts) { $total+=$val; }
7702: if ($_64bit) { if ($total > 2**32) { return -1; } }
7703: return int($total);
7704: }
7705:
7706: sub numval3 {
7707: use integer;
7708: my $txt=shift;
7709: $txt=~tr/A-J/0-9/;
7710: $txt=~tr/a-j/0-9/;
7711: $txt=~tr/K-T/0-9/;
7712: $txt=~tr/k-t/0-9/;
7713: $txt=~tr/U-Z/0-5/;
7714: $txt=~tr/u-z/0-5/;
7715: $txt=~s/\D//g;
7716: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7717: my $total;
7718: foreach my $val (@txts) { $total+=$val; }
7719: if ($_64bit) { $total=(($total<<32)>>32); }
7720: return $total;
7721: }
7722:
7723: sub digest {
7724: my ($data)=@_;
7725: my $digest=&Digest::MD5::md5($data);
7726: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7727: my ($e,$f);
7728: {
7729: use integer;
7730: $e=($a+$b);
7731: $f=($c+$d);
7732: if ($_64bit) {
7733: $e=(($e<<32)>>32);
7734: $f=(($f<<32)>>32);
7735: }
7736: }
7737: if (wantarray) {
7738: return ($e,$f);
7739: } else {
7740: my $g;
7741: {
7742: use integer;
7743: $g=($e+$f);
7744: if ($_64bit) {
7745: $g=(($g<<32)>>32);
7746: }
7747: }
7748: return $g;
7749: }
7750: }
7751:
7752: sub latest_rnd_algorithm_id {
7753: return '64bit5';
7754: }
7755:
7756: sub get_rand_alg {
7757: my ($courseid)=@_;
7758: if (!$courseid) { $courseid=(&whichuser())[1]; }
7759: if ($courseid) {
7760: return $env{"course.$courseid.rndseed"};
7761: }
7762: return &latest_rnd_algorithm_id();
7763: }
7764:
7765: sub validCODE {
7766: my ($CODE)=@_;
7767: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7768: return 0;
7769: }
7770:
7771: sub getCODE {
7772: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7773: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7774: defined($Apache::lonhomework::parsing_a_task) ) &&
7775: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7776: return $Apache::lonhomework::history{'resource.CODE'};
7777: }
7778: return undef;
7779: }
7780:
7781: sub rndseed {
7782: my ($symb,$courseid,$domain,$username)=@_;
7783: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7784: if (!defined($symb)) {
7785: unless ($symb=$wsymb) { return time; }
7786: }
7787: if (!$courseid) { $courseid=$wcourseid; }
7788: if (!$domain) { $domain=$wdomain; }
7789: if (!$username) { $username=$wusername }
7790: my $which=&get_rand_alg();
7791:
7792: if (defined(&getCODE())) {
7793: if ($which eq '64bit5') {
7794: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7795: } elsif ($which eq '64bit4') {
7796: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7797: } else {
7798: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7799: }
7800: } elsif ($which eq '64bit5') {
7801: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7802: } elsif ($which eq '64bit4') {
7803: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7804: } elsif ($which eq '64bit3') {
7805: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7806: } elsif ($which eq '64bit2') {
7807: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7808: } elsif ($which eq '64bit') {
7809: return &rndseed_64bit($symb,$courseid,$domain,$username);
7810: }
7811: return &rndseed_32bit($symb,$courseid,$domain,$username);
7812: }
7813:
7814: sub rndseed_32bit {
7815: my ($symb,$courseid,$domain,$username)=@_;
7816: {
7817: use integer;
7818: my $symbchck=unpack("%32C*",$symb) << 27;
7819: my $symbseed=numval($symb) << 22;
7820: my $namechck=unpack("%32C*",$username) << 17;
7821: my $nameseed=numval($username) << 12;
7822: my $domainseed=unpack("%32C*",$domain) << 7;
7823: my $courseseed=unpack("%32C*",$courseid);
7824: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7825: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7826: #&logthis("rndseed :$num:$symb");
7827: if ($_64bit) { $num=(($num<<32)>>32); }
7828: return $num;
7829: }
7830: }
7831:
7832: sub rndseed_64bit {
7833: my ($symb,$courseid,$domain,$username)=@_;
7834: {
7835: use integer;
7836: my $symbchck=unpack("%32S*",$symb) << 21;
7837: my $symbseed=numval($symb) << 10;
7838: my $namechck=unpack("%32S*",$username);
7839:
7840: my $nameseed=numval($username) << 21;
7841: my $domainseed=unpack("%32S*",$domain) << 10;
7842: my $courseseed=unpack("%32S*",$courseid);
7843:
7844: my $num1=$symbchck+$symbseed+$namechck;
7845: my $num2=$nameseed+$domainseed+$courseseed;
7846: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7847: #&logthis("rndseed :$num:$symb");
7848: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7849: return "$num1,$num2";
7850: }
7851: }
7852:
7853: sub rndseed_64bit2 {
7854: my ($symb,$courseid,$domain,$username)=@_;
7855: {
7856: use integer;
7857: # strings need to be an even # of cahracters long, it it is odd the
7858: # last characters gets thrown away
7859: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7860: my $symbseed=numval($symb) << 10;
7861: my $namechck=unpack("%32S*",$username.' ');
7862:
7863: my $nameseed=numval($username) << 21;
7864: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7865: my $courseseed=unpack("%32S*",$courseid.' ');
7866:
7867: my $num1=$symbchck+$symbseed+$namechck;
7868: my $num2=$nameseed+$domainseed+$courseseed;
7869: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7870: #&logthis("rndseed :$num:$symb");
7871: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7872: return "$num1,$num2";
7873: }
7874: }
7875:
7876: sub rndseed_64bit3 {
7877: my ($symb,$courseid,$domain,$username)=@_;
7878: {
7879: use integer;
7880: # strings need to be an even # of cahracters long, it it is odd the
7881: # last characters gets thrown away
7882: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7883: my $symbseed=numval2($symb) << 10;
7884: my $namechck=unpack("%32S*",$username.' ');
7885:
7886: my $nameseed=numval2($username) << 21;
7887: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7888: my $courseseed=unpack("%32S*",$courseid.' ');
7889:
7890: my $num1=$symbchck+$symbseed+$namechck;
7891: my $num2=$nameseed+$domainseed+$courseseed;
7892: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7893: #&logthis("rndseed :$num1:$num2:$_64bit");
7894: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7895:
7896: return "$num1:$num2";
7897: }
7898: }
7899:
7900: sub rndseed_64bit4 {
7901: my ($symb,$courseid,$domain,$username)=@_;
7902: {
7903: use integer;
7904: # strings need to be an even # of cahracters long, it it is odd the
7905: # last characters gets thrown away
7906: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7907: my $symbseed=numval3($symb) << 10;
7908: my $namechck=unpack("%32S*",$username.' ');
7909:
7910: my $nameseed=numval3($username) << 21;
7911: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7912: my $courseseed=unpack("%32S*",$courseid.' ');
7913:
7914: my $num1=$symbchck+$symbseed+$namechck;
7915: my $num2=$nameseed+$domainseed+$courseseed;
7916: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7917: #&logthis("rndseed :$num1:$num2:$_64bit");
7918: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7919:
7920: return "$num1:$num2";
7921: }
7922: }
7923:
7924: sub rndseed_64bit5 {
7925: my ($symb,$courseid,$domain,$username)=@_;
7926: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7927: return "$num1:$num2";
7928: }
7929:
7930: sub rndseed_CODE_64bit {
7931: my ($symb,$courseid,$domain,$username)=@_;
7932: {
7933: use integer;
7934: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7935: my $symbseed=numval2($symb);
7936: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7937: my $CODEseed=numval(&getCODE());
7938: my $courseseed=unpack("%32S*",$courseid.' ');
7939: my $num1=$symbseed+$CODEchck;
7940: my $num2=$CODEseed+$courseseed+$symbchck;
7941: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7942: #&logthis("rndseed :$num1:$num2:$symb");
7943: if ($_64bit) { $num1=(($num1<<32)>>32); }
7944: if ($_64bit) { $num2=(($num2<<32)>>32); }
7945: return "$num1:$num2";
7946: }
7947: }
7948:
7949: sub rndseed_CODE_64bit4 {
7950: my ($symb,$courseid,$domain,$username)=@_;
7951: {
7952: use integer;
7953: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7954: my $symbseed=numval3($symb);
7955: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7956: my $CODEseed=numval3(&getCODE());
7957: my $courseseed=unpack("%32S*",$courseid.' ');
7958: my $num1=$symbseed+$CODEchck;
7959: my $num2=$CODEseed+$courseseed+$symbchck;
7960: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7961: #&logthis("rndseed :$num1:$num2:$symb");
7962: if ($_64bit) { $num1=(($num1<<32)>>32); }
7963: if ($_64bit) { $num2=(($num2<<32)>>32); }
7964: return "$num1:$num2";
7965: }
7966: }
7967:
7968: sub rndseed_CODE_64bit5 {
7969: my ($symb,$courseid,$domain,$username)=@_;
7970: my $code = &getCODE();
7971: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7972: return "$num1:$num2";
7973: }
7974:
7975: sub setup_random_from_rndseed {
7976: my ($rndseed)=@_;
7977: if ($rndseed =~/([,:])/) {
7978: my ($num1,$num2)=split(/[,:]/,$rndseed);
7979: &Math::Random::random_set_seed(abs($num1),abs($num2));
7980: } else {
7981: &Math::Random::random_set_seed_from_phrase($rndseed);
7982: }
7983: }
7984:
7985: sub latest_receipt_algorithm_id {
7986: return 'receipt3';
7987: }
7988:
7989: sub recunique {
7990: my $fucourseid=shift;
7991: my $unique;
7992: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7993: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7994: $unique=$env{"course.$fucourseid.internal.encseed"};
7995: } else {
7996: $unique=$perlvar{'lonReceipt'};
7997: }
7998: return unpack("%32C*",$unique);
7999: }
8000:
8001: sub recprefix {
8002: my $fucourseid=shift;
8003: my $prefix;
8004: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
8005: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8006: $prefix=$env{"course.$fucourseid.internal.encpref"};
8007: } else {
8008: $prefix=$perlvar{'lonHostID'};
8009: }
8010: return unpack("%32C*",$prefix);
8011: }
8012:
8013: sub ireceipt {
8014: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
8015:
8016: my $return =&recprefix($fucourseid).'-';
8017:
8018: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
8019: $env{'request.state'} eq 'construct') {
8020: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
8021: return $return;
8022: }
8023:
8024: my $cuname=unpack("%32C*",$funame);
8025: my $cudom=unpack("%32C*",$fudom);
8026: my $cucourseid=unpack("%32C*",$fucourseid);
8027: my $cusymb=unpack("%32C*",$fusymb);
8028: my $cunique=&recunique($fucourseid);
8029: my $cpart=unpack("%32S*",$part);
8030: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8031:
8032: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8033:
8034: $return.= ($cunique%$cuname+
8035: $cunique%$cudom+
8036: $cusymb%$cuname+
8037: $cusymb%$cudom+
8038: $cucourseid%$cuname+
8039: $cucourseid%$cudom+
8040: $cpart%$cuname+
8041: $cpart%$cudom);
8042: } else {
8043: $return.= ($cunique%$cuname+
8044: $cunique%$cudom+
8045: $cusymb%$cuname+
8046: $cusymb%$cudom+
8047: $cucourseid%$cuname+
8048: $cucourseid%$cudom);
8049: }
8050: return $return;
8051: }
8052:
8053: sub receipt {
8054: my ($part)=@_;
8055: my ($symb,$courseid,$domain,$name) = &whichuser();
8056: return &ireceipt($name,$domain,$courseid,$symb,$part);
8057: }
8058:
8059: sub whichuser {
8060: my ($passedsymb)=@_;
8061: my ($symb,$courseid,$domain,$name,$publicuser);
8062: if (defined($env{'form.grade_symb'})) {
8063: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8064: my $allowed=&allowed('vgr',$tmp_courseid);
8065: if (!$allowed &&
8066: exists($env{'request.course.sec'}) &&
8067: $env{'request.course.sec'} !~ /^\s*$/) {
8068: $allowed=&allowed('vgr',$tmp_courseid.
8069: '/'.$env{'request.course.sec'});
8070: }
8071: if ($allowed) {
8072: ($symb)=&get_env_multiple('form.grade_symb');
8073: $courseid=$tmp_courseid;
8074: ($domain)=&get_env_multiple('form.grade_domain');
8075: ($name)=&get_env_multiple('form.grade_username');
8076: return ($symb,$courseid,$domain,$name,$publicuser);
8077: }
8078: }
8079: if (!$passedsymb) {
8080: $symb=&symbread();
8081: } else {
8082: $symb=$passedsymb;
8083: }
8084: $courseid=$env{'request.course.id'};
8085: $domain=$env{'user.domain'};
8086: $name=$env{'user.name'};
8087: if ($name eq 'public' && $domain eq 'public') {
8088: if (!defined($env{'form.username'})) {
8089: $env{'form.username'}.=time.rand(10000000);
8090: }
8091: $name.=$env{'form.username'};
8092: }
8093: return ($symb,$courseid,$domain,$name,$publicuser);
8094:
8095: }
8096:
8097: # ------------------------------------------------------------ Serves up a file
8098: # returns either the contents of the file or
8099: # -1 if the file doesn't exist
8100: #
8101: # if the target is a file that was uploaded via DOCS,
8102: # a check will be made to see if a current copy exists on the local server,
8103: # if it does this will be served, otherwise a copy will be retrieved from
8104: # the home server for the course and stored in /home/httpd/html/userfiles on
8105: # the local server.
8106:
8107: sub getfile {
8108: my ($file) = @_;
8109: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8110: &repcopy($file);
8111: return &readfile($file);
8112: }
8113:
8114: sub repcopy_userfile {
8115: my ($file)=@_;
8116: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8117: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8118: my ($cdom,$cnum,$filename) =
8119: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8120: my $uri="/uploaded/$cdom/$cnum/$filename";
8121: if (-e "$file") {
8122: # we already have a local copy, check it out
8123: my @fileinfo = stat($file);
8124: my $rtncode;
8125: my $info;
8126: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8127: if ($lwpresp ne 'ok') {
8128: # there is no such file anymore, even though we had a local copy
8129: if ($rtncode eq '404') {
8130: unlink($file);
8131: }
8132: return -1;
8133: }
8134: if ($info < $fileinfo[9]) {
8135: # nice, the file we have is up-to-date, just say okay
8136: return 'ok';
8137: } else {
8138: # the file is outdated, get rid of it
8139: unlink($file);
8140: }
8141: }
8142: # one way or the other, at this point, we don't have the file
8143: # construct the correct path for the file
8144: my @parts = ($cdom,$cnum);
8145: if ($filename =~ m|^(.+)/[^/]+$|) {
8146: push @parts, split(/\//,$1);
8147: }
8148: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8149: foreach my $part (@parts) {
8150: $path .= '/'.$part;
8151: if (!-e $path) {
8152: mkdir($path,0770);
8153: }
8154: }
8155: # now the path exists for sure
8156: # get a user agent
8157: my $ua=new LWP::UserAgent;
8158: my $transferfile=$file.'.in.transfer';
8159: # FIXME: this should flock
8160: if (-e $transferfile) { return 'ok'; }
8161: my $request;
8162: $uri=~s/^\///;
8163: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8164: my $response=$ua->request($request,$transferfile);
8165: # did it work?
8166: if ($response->is_error()) {
8167: unlink($transferfile);
8168: &logthis("Userfile repcopy failed for $uri");
8169: return -1;
8170: }
8171: # worked, rename the transfer file
8172: rename($transferfile,$file);
8173: return 'ok';
8174: }
8175:
8176: sub tokenwrapper {
8177: my $uri=shift;
8178: $uri=~s|^http\://([^/]+)||;
8179: $uri=~s|^/||;
8180: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8181: my $token=$1;
8182: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8183: if ($udom && $uname && $file) {
8184: $file=~s|(\?\.*)*$||;
8185: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8186: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8187: (($uri=~/\?/)?'&':'?').'token='.$token.
8188: '&tokenissued='.$perlvar{'lonHostID'};
8189: } else {
8190: return '/adm/notfound.html';
8191: }
8192: }
8193:
8194: # call with reqtype HEAD: get last modification time
8195: # call with reqtype GET: get the file contents
8196: # Do not call this with reqtype GET for large files! It loads everything into memory
8197: #
8198: sub getuploaded {
8199: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8200: $uri=~s/^\///;
8201: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8202: my $ua=new LWP::UserAgent;
8203: my $request=new HTTP::Request($reqtype,$uri);
8204: my $response=$ua->request($request);
8205: $$rtncode = $response->code;
8206: if (! $response->is_success()) {
8207: return 'failed';
8208: }
8209: if ($reqtype eq 'HEAD') {
8210: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8211: } elsif ($reqtype eq 'GET') {
8212: $$info = $response->content;
8213: }
8214: return 'ok';
8215: }
8216:
8217: sub readfile {
8218: my $file = shift;
8219: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8220: my $fh;
8221: open($fh,"<$file");
8222: my $a='';
8223: while (my $line = <$fh>) { $a .= $line; }
8224: return $a;
8225: }
8226:
8227: sub filelocation {
8228: my ($dir,$file) = @_;
8229: my $location;
8230: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8231:
8232: if ($file =~ m-^/adm/-) {
8233: $file=~s-^/adm/wrapper/-/-;
8234: $file=~s-^/adm/coursedocs/showdoc/-/-;
8235: }
8236:
8237: if ($file=~m:^/~:) { # is a contruction space reference
8238: $location = $file;
8239: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8240: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8241: # is a correct contruction space reference
8242: $location = $file;
8243: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8244: $location = $file;
8245: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8246: my ($udom,$uname,$filename)=
8247: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8248: my $home=&homeserver($uname,$udom);
8249: my $is_me=0;
8250: my @ids=¤t_machine_ids();
8251: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8252: if ($is_me) {
8253: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8254: } else {
8255: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8256: $udom.'/'.$uname.'/'.$filename;
8257: }
8258: } elsif ($file =~ m-^/adm/-) {
8259: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8260: } else {
8261: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8262: $file=~s:^/res/:/:;
8263: if ( !( $file =~ m:^/:) ) {
8264: $location = $dir. '/'.$file;
8265: } else {
8266: $location = '/home/httpd/html/res'.$file;
8267: }
8268: }
8269: $location=~s://+:/:g; # remove duplicate /
8270: while ($location=~m{/\.\./}) {
8271: if ($location =~ m{/[^/]+/\.\./}) {
8272: $location=~ s{/[^/]+/\.\./}{/}g;
8273: } else {
8274: $location=~ s{/\.\./}{/}g;
8275: }
8276: } #remove dir/..
8277: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8278: return $location;
8279: }
8280:
8281: sub hreflocation {
8282: my ($dir,$file)=@_;
8283: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8284: $file=filelocation($dir,$file);
8285: } elsif ($file=~m-^/adm/-) {
8286: $file=~s-^/adm/wrapper/-/-;
8287: $file=~s-^/adm/coursedocs/showdoc/-/-;
8288: }
8289: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8290: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8291: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8292: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8293: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8294: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8295: -/uploaded/$1/$2/-x;
8296: }
8297: if ($file=~ m{^/userfiles/}) {
8298: $file =~ s{^/userfiles/}{/uploaded/};
8299: }
8300: return $file;
8301: }
8302:
8303: sub current_machine_domains {
8304: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8305: }
8306:
8307: sub machine_domains {
8308: my ($hostname) = @_;
8309: my @domains;
8310: my %hostname = &all_hostnames();
8311: while( my($id, $name) = each(%hostname)) {
8312: # &logthis("-$id-$name-$hostname-");
8313: if ($hostname eq $name) {
8314: push(@domains,&host_domain($id));
8315: }
8316: }
8317: return @domains;
8318: }
8319:
8320: sub current_machine_ids {
8321: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8322: }
8323:
8324: sub machine_ids {
8325: my ($hostname) = @_;
8326: $hostname ||= &hostname($perlvar{'lonHostID'});
8327: my @ids;
8328: my %name_to_host = &all_names();
8329: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8330: return @{ $name_to_host{$hostname} };
8331: }
8332: return;
8333: }
8334:
8335: sub additional_machine_domains {
8336: my @domains;
8337: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8338: while( my $line = <$fh>) {
8339: $line =~ s/\s//g;
8340: push(@domains,$line);
8341: }
8342: return @domains;
8343: }
8344:
8345: sub default_login_domain {
8346: my $domain = $perlvar{'lonDefDomain'};
8347: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8348: foreach my $posdom (¤t_machine_domains(),
8349: &additional_machine_domains()) {
8350: if (lc($posdom) eq lc($testdomain)) {
8351: $domain=$posdom;
8352: last;
8353: }
8354: }
8355: return $domain;
8356: }
8357:
8358: # ------------------------------------------------------------- Declutters URLs
8359:
8360: sub declutter {
8361: my $thisfn=shift;
8362: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8363: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8364: $thisfn=~s/^\///;
8365: $thisfn=~s|^adm/wrapper/||;
8366: $thisfn=~s|^adm/coursedocs/showdoc/||;
8367: $thisfn=~s/^res\///;
8368: $thisfn=~s/\?.+$//;
8369: return $thisfn;
8370: }
8371:
8372: # ------------------------------------------------------------- Clutter up URLs
8373:
8374: sub clutter {
8375: my $thisfn='/'.&declutter(shift);
8376: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8377: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8378: $thisfn='/res'.$thisfn;
8379: }
8380: if ($thisfn !~m|/adm|) {
8381: if ($thisfn =~ m|/ext/|) {
8382: $thisfn='/adm/wrapper'.$thisfn;
8383: } else {
8384: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8385: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8386: if ($embstyle eq 'ssi'
8387: || ($embstyle eq 'hdn')
8388: || ($embstyle eq 'rat')
8389: || ($embstyle eq 'prv')
8390: || ($embstyle eq 'ign')) {
8391: #do nothing with these
8392: } elsif (($embstyle eq 'img')
8393: || ($embstyle eq 'emb')
8394: || ($embstyle eq 'wrp')) {
8395: $thisfn='/adm/wrapper'.$thisfn;
8396: } elsif ($embstyle eq 'unk'
8397: && $thisfn!~/\.(sequence|page)$/) {
8398: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8399: } else {
8400: # &logthis("Got a blank emb style");
8401: }
8402: }
8403: }
8404: return $thisfn;
8405: }
8406:
8407: sub clutter_with_no_wrapper {
8408: my $uri = &clutter(shift);
8409: if ($uri =~ m-^/adm/-) {
8410: $uri =~ s-^/adm/wrapper/-/-;
8411: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8412: }
8413: return $uri;
8414: }
8415:
8416: sub freeze_escape {
8417: my ($value)=@_;
8418: if (ref($value)) {
8419: $value=&nfreeze($value);
8420: return '__FROZEN__'.&escape($value);
8421: }
8422: return &escape($value);
8423: }
8424:
8425:
8426: sub thaw_unescape {
8427: my ($value)=@_;
8428: if ($value =~ /^__FROZEN__/) {
8429: substr($value,0,10,undef);
8430: $value=&unescape($value);
8431: return &thaw($value);
8432: }
8433: return &unescape($value);
8434: }
8435:
8436: sub correct_line_ends {
8437: my ($result)=@_;
8438: $$result =~s/\r\n/\n/mg;
8439: $$result =~s/\r/\n/mg;
8440: }
8441: # ================================================================ Main Program
8442:
8443: sub goodbye {
8444: &logthis("Starting Shut down");
8445: #not converted to using infrastruture and probably shouldn't be
8446: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8447: #converted
8448: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8449: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8450: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8451: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8452: #1.1 only
8453: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8454: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8455: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8456: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8457: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8458: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8459: &logthis(sprintf("%-20s is %s",'hits',$hits));
8460: &flushcourselogs();
8461: &logthis("Shutting down");
8462: }
8463:
8464: sub get_dns {
8465: my ($url,$func,$ignore_cache) = @_;
8466: if (!$ignore_cache) {
8467: my ($content,$cached)=
8468: &Apache::lonnet::is_cached_new('dns',$url);
8469: if ($cached) {
8470: &$func($content);
8471: return;
8472: }
8473: }
8474:
8475: my %alldns;
8476: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8477: foreach my $dns (<$config>) {
8478: next if ($dns !~ /^\^(\S*)/x);
8479: $alldns{$1} = 1;
8480: }
8481: while (%alldns) {
8482: my ($dns) = keys(%alldns);
8483: delete($alldns{$dns});
8484: my $ua=new LWP::UserAgent;
8485: my $request=new HTTP::Request('GET',"http://$dns$url");
8486: my $response=$ua->request($request);
8487: next if ($response->is_error());
8488: my @content = split("\n",$response->content);
8489: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8490: &$func(\@content);
8491: return;
8492: }
8493: close($config);
8494: my $which = (split('/',$url))[3];
8495: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8496: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8497: my @content = <$config>;
8498: &$func(\@content);
8499: return;
8500: }
8501: # ------------------------------------------------------------ Read domain file
8502: {
8503: my $loaded;
8504: my %domain;
8505:
8506: sub parse_domain_tab {
8507: my ($lines) = @_;
8508: foreach my $line (@$lines) {
8509: next if ($line =~ /^(\#|\s*$ )/x);
8510:
8511: chomp($line);
8512: my ($name,@elements) = split(/:/,$line,9);
8513: my %this_domain;
8514: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8515: 'lang_def', 'city', 'longi', 'lati',
8516: 'primary') {
8517: $this_domain{$field} = shift(@elements);
8518: }
8519: $domain{$name} = \%this_domain;
8520: }
8521: }
8522:
8523: sub reset_domain_info {
8524: undef($loaded);
8525: undef(%domain);
8526: }
8527:
8528: sub load_domain_tab {
8529: my ($ignore_cache) = @_;
8530: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8531: my $fh;
8532: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8533: my @lines = <$fh>;
8534: &parse_domain_tab(\@lines);
8535: }
8536: close($fh);
8537: $loaded = 1;
8538: }
8539:
8540: sub domain {
8541: &load_domain_tab() if (!$loaded);
8542:
8543: my ($name,$what) = @_;
8544: return if ( !exists($domain{$name}) );
8545:
8546: if (!$what) {
8547: return $domain{$name}{'description'};
8548: }
8549: return $domain{$name}{$what};
8550: }
8551:
8552: sub domain_info {
8553: &load_domain_tab() if (!$loaded);
8554: return %domain;
8555: }
8556:
8557: }
8558:
8559:
8560: # ------------------------------------------------------------- Read hosts file
8561: {
8562: my %hostname;
8563: my %hostdom;
8564: my %libserv;
8565: my $loaded;
8566: my %name_to_host;
8567:
8568: sub parse_hosts_tab {
8569: my ($file) = @_;
8570: foreach my $configline (@$file) {
8571: next if ($configline =~ /^(\#|\s*$ )/x);
8572: next if ($configline =~ /^\^/);
8573: chomp($configline);
8574: my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
8575: $name=~s/\s//g;
8576: if ($id && $domain && $role && $name) {
8577: $hostname{$id}=$name;
8578: push(@{$name_to_host{$name}}, $id);
8579: $hostdom{$id}=$domain;
8580: if ($role eq 'library') { $libserv{$id}=$name; }
8581: if (defined($protocol)) {
8582: if ($protocol eq 'https') {
8583: $protocol{$id} = $protocol;
8584: } else {
8585: $protocol{$id} = 'http';
8586: }
8587: } else {
8588: $protocol{$id} = 'http';
8589: }
8590: }
8591: }
8592: }
8593:
8594: sub reset_hosts_info {
8595: &purge_remembered();
8596: &reset_domain_info();
8597: &reset_hosts_ip_info();
8598: undef(%name_to_host);
8599: undef(%hostname);
8600: undef(%hostdom);
8601: undef(%libserv);
8602: undef($loaded);
8603: }
8604:
8605: sub load_hosts_tab {
8606: my ($ignore_cache) = @_;
8607: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8608: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8609: my @config = <$config>;
8610: &parse_hosts_tab(\@config);
8611: close($config);
8612: $loaded=1;
8613: }
8614:
8615: sub hostname {
8616: &load_hosts_tab() if (!$loaded);
8617:
8618: my ($lonid) = @_;
8619: return $hostname{$lonid};
8620: }
8621:
8622: sub all_hostnames {
8623: &load_hosts_tab() if (!$loaded);
8624:
8625: return %hostname;
8626: }
8627:
8628: sub all_names {
8629: &load_hosts_tab() if (!$loaded);
8630:
8631: return %name_to_host;
8632: }
8633:
8634: sub all_host_domain {
8635: &load_hosts_tab() if (!$loaded);
8636: return %hostdom;
8637: }
8638:
8639: sub is_library {
8640: &load_hosts_tab() if (!$loaded);
8641:
8642: return exists($libserv{$_[0]});
8643: }
8644:
8645: sub all_library {
8646: &load_hosts_tab() if (!$loaded);
8647:
8648: return %libserv;
8649: }
8650:
8651: sub get_servers {
8652: &load_hosts_tab() if (!$loaded);
8653:
8654: my ($domain,$type) = @_;
8655: my %possible_hosts = ($type eq 'library') ? %libserv
8656: : %hostname;
8657: my %result;
8658: if (ref($domain) eq 'ARRAY') {
8659: while ( my ($host,$hostname) = each(%possible_hosts)) {
8660: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8661: $result{$host} = $hostname;
8662: }
8663: }
8664: } else {
8665: while ( my ($host,$hostname) = each(%possible_hosts)) {
8666: if ($hostdom{$host} eq $domain) {
8667: $result{$host} = $hostname;
8668: }
8669: }
8670: }
8671: return %result;
8672: }
8673:
8674: sub host_domain {
8675: &load_hosts_tab() if (!$loaded);
8676:
8677: my ($lonid) = @_;
8678: return $hostdom{$lonid};
8679: }
8680:
8681: sub all_domains {
8682: &load_hosts_tab() if (!$loaded);
8683:
8684: my %seen;
8685: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8686: return @uniq;
8687: }
8688: }
8689:
8690: {
8691: my %iphost;
8692: my %name_to_ip;
8693: my %lonid_to_ip;
8694:
8695: sub get_hosts_from_ip {
8696: my ($ip) = @_;
8697: my %iphosts = &get_iphost();
8698: if (ref($iphosts{$ip})) {
8699: return @{$iphosts{$ip}};
8700: }
8701: return;
8702: }
8703:
8704: sub reset_hosts_ip_info {
8705: undef(%iphost);
8706: undef(%name_to_ip);
8707: undef(%lonid_to_ip);
8708: }
8709:
8710: sub get_host_ip {
8711: my ($lonid) = @_;
8712: if (exists($lonid_to_ip{$lonid})) {
8713: return $lonid_to_ip{$lonid};
8714: }
8715: my $name=&hostname($lonid);
8716: my $ip = gethostbyname($name);
8717: return if (!$ip || length($ip) ne 4);
8718: $ip=inet_ntoa($ip);
8719: $name_to_ip{$name} = $ip;
8720: $lonid_to_ip{$lonid} = $ip;
8721: return $ip;
8722: }
8723:
8724: sub get_iphost {
8725: my ($ignore_cache) = @_;
8726:
8727: if (!$ignore_cache) {
8728: if (%iphost) {
8729: return %iphost;
8730: }
8731: my ($ip_info,$cached)=
8732: &Apache::lonnet::is_cached_new('iphost','iphost');
8733: if ($cached) {
8734: %iphost = %{$ip_info->[0]};
8735: %name_to_ip = %{$ip_info->[1]};
8736: %lonid_to_ip = %{$ip_info->[2]};
8737: return %iphost;
8738: }
8739: }
8740:
8741: # get yesterday's info for fallback
8742: my %old_name_to_ip;
8743: my ($ip_info,$cached)=
8744: &Apache::lonnet::is_cached_new('iphost','iphost');
8745: if ($cached) {
8746: %old_name_to_ip = %{$ip_info->[1]};
8747: }
8748:
8749: my %name_to_host = &all_names();
8750: foreach my $name (keys(%name_to_host)) {
8751: my $ip;
8752: if (!exists($name_to_ip{$name})) {
8753: $ip = gethostbyname($name);
8754: if (!$ip || length($ip) ne 4) {
8755: if (defined($old_name_to_ip{$name})) {
8756: $ip = $old_name_to_ip{$name};
8757: &logthis("Can't find $name defaulting to old $ip");
8758: } else {
8759: &logthis("Name $name no IP found");
8760: next;
8761: }
8762: } else {
8763: $ip=inet_ntoa($ip);
8764: }
8765: $name_to_ip{$name} = $ip;
8766: } else {
8767: $ip = $name_to_ip{$name};
8768: }
8769: foreach my $id (@{ $name_to_host{$name} }) {
8770: $lonid_to_ip{$id} = $ip;
8771: }
8772: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8773: }
8774: &Apache::lonnet::do_cache_new('iphost','iphost',
8775: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8776: 48*60*60);
8777:
8778: return %iphost;
8779: }
8780: }
8781:
8782: BEGIN {
8783:
8784: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8785: unless ($readit) {
8786: {
8787: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8788: %perlvar = (%perlvar,%{$configvars});
8789: }
8790:
8791:
8792: # ------------------------------------------------------ Read spare server file
8793: {
8794: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8795:
8796: while (my $configline=<$config>) {
8797: chomp($configline);
8798: if ($configline) {
8799: my ($host,$type) = split(':',$configline,2);
8800: if (!defined($type) || $type eq '') { $type = 'default' };
8801: push(@{ $spareid{$type} }, $host);
8802: }
8803: }
8804: close($config);
8805: }
8806: # ------------------------------------------------------------ Read permissions
8807: {
8808: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8809:
8810: while (my $configline=<$config>) {
8811: chomp($configline);
8812: if ($configline) {
8813: my ($role,$perm)=split(/ /,$configline);
8814: if ($perm ne '') { $pr{$role}=$perm; }
8815: }
8816: }
8817: close($config);
8818: }
8819:
8820: # -------------------------------------------- Read plain texts for permissions
8821: {
8822: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8823:
8824: while (my $configline=<$config>) {
8825: chomp($configline);
8826: if ($configline) {
8827: my ($short,@plain)=split(/:/,$configline);
8828: %{$prp{$short}} = ();
8829: if (@plain > 0) {
8830: $prp{$short}{'std'} = $plain[0];
8831: for (my $i=1; $i<@plain; $i++) {
8832: $prp{$short}{'alt'.$i} = $plain[$i];
8833: }
8834: }
8835: }
8836: }
8837: close($config);
8838: }
8839:
8840: # ---------------------------------------------------------- Read package table
8841: {
8842: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8843:
8844: while (my $configline=<$config>) {
8845: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8846: chomp($configline);
8847: my ($short,$plain)=split(/:/,$configline);
8848: my ($pack,$name)=split(/\&/,$short);
8849: if ($plain ne '') {
8850: $packagetab{$pack.'&'.$name.'&name'}=$name;
8851: $packagetab{$short}=$plain;
8852: }
8853: }
8854: close($config);
8855: }
8856:
8857: # ------------- set up temporary directory
8858: {
8859: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8860:
8861: }
8862:
8863: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8864: 'compress_threshold'=> 20_000,
8865: });
8866:
8867: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8868: $dumpcount=0;
8869: $locknum=0;
8870:
8871: &logtouch();
8872: &logthis('<font color="yellow">INFO: Read configuration</font>');
8873: $readit=1;
8874: {
8875: use integer;
8876: my $test=(2**32)+1;
8877: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8878: &logthis(" Detected 64bit platform ($_64bit)");
8879: }
8880: }
8881: }
8882:
8883: 1;
8884: __END__
8885:
8886: =pod
8887:
8888: =head1 NAME
8889:
8890: Apache::lonnet - Subroutines to ask questions about things in the network.
8891:
8892: =head1 SYNOPSIS
8893:
8894: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8895:
8896: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8897:
8898: Common parameters:
8899:
8900: =over 4
8901:
8902: =item *
8903:
8904: $uname : an internal username (if $cname expecting a course Id specifically)
8905:
8906: =item *
8907:
8908: $udom : a domain (if $cdom expecting a course's domain specifically)
8909:
8910: =item *
8911:
8912: $symb : a resource instance identifier
8913:
8914: =item *
8915:
8916: $namespace : the name of a .db file that contains the data needed or
8917: being set.
8918:
8919: =back
8920:
8921: =head1 OVERVIEW
8922:
8923: lonnet provides subroutines which interact with the
8924: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8925: about classes, users, and resources.
8926:
8927: For many of these objects you can also use this to store data about
8928: them or modify them in various ways.
8929:
8930: =head2 Symbs
8931:
8932: To identify a specific instance of a resource, LON-CAPA uses symbols
8933: or "symbs"X<symb>. These identifiers are built from the URL of the
8934: map, the resource number of the resource in the map, and the URL of
8935: the resource itself. The latter is somewhat redundant, but might help
8936: if maps change.
8937:
8938: An example is
8939:
8940: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8941:
8942: The respective map entry is
8943:
8944: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8945: title="Problem 2">
8946: </resource>
8947:
8948: Symbs are used by the random number generator, as well as to store and
8949: restore data specific to a certain instance of for example a problem.
8950:
8951: =head2 Storing And Retrieving Data
8952:
8953: X<store()>X<cstore()>X<restore()>Three of the most important functions
8954: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8955: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8956: is is the non-critical message twin of cstore. These functions are for
8957: handlers to store a perl hash to a user's permanent data space in an
8958: easy manner, and to retrieve it again on another call. It is expected
8959: that a handler would use this once at the beginning to retrieve data,
8960: and then again once at the end to send only the new data back.
8961:
8962: The data is stored in the user's data directory on the user's
8963: homeserver under the ID of the course.
8964:
8965: The hash that is returned by restore will have all of the previous
8966: value for all of the elements of the hash.
8967:
8968: Example:
8969:
8970: #creating a hash
8971: my %hash;
8972: $hash{'foo'}='bar';
8973:
8974: #storing it
8975: &Apache::lonnet::cstore(\%hash);
8976:
8977: #changing a value
8978: $hash{'foo'}='notbar';
8979:
8980: #adding a new value
8981: $hash{'bar'}='foo';
8982: &Apache::lonnet::cstore(\%hash);
8983:
8984: #retrieving the hash
8985: my %history=&Apache::lonnet::restore();
8986:
8987: #print the hash
8988: foreach my $key (sort(keys(%history))) {
8989: print("\%history{$key} = $history{$key}");
8990: }
8991:
8992: Will print out:
8993:
8994: %history{1:foo} = bar
8995: %history{1:keys} = foo:timestamp
8996: %history{1:timestamp} = 990455579
8997: %history{2:bar} = foo
8998: %history{2:foo} = notbar
8999: %history{2:keys} = foo:bar:timestamp
9000: %history{2:timestamp} = 990455580
9001: %history{bar} = foo
9002: %history{foo} = notbar
9003: %history{timestamp} = 990455580
9004: %history{version} = 2
9005:
9006: Note that the special hash entries C<keys>, C<version> and
9007: C<timestamp> were added to the hash. C<version> will be equal to the
9008: total number of versions of the data that have been stored. The
9009: C<timestamp> attribute will be the UNIX time the hash was
9010: stored. C<keys> is available in every historical section to list which
9011: keys were added or changed at a specific historical revision of a
9012: hash.
9013:
9014: B<Warning>: do not store the hash that restore returns directly. This
9015: will cause a mess since it will restore the historical keys as if the
9016: were new keys. I.E. 1:foo will become 1:1:foo etc.
9017:
9018: Calling convention:
9019:
9020: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
9021: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
9022:
9023: For more detailed information, see lonnet specific documentation.
9024:
9025: =head1 RETURN MESSAGES
9026:
9027: =over 4
9028:
9029: =item * B<con_lost>: unable to contact remote host
9030:
9031: =item * B<con_delayed>: unable to contact remote host, message will be delivered
9032: when the connection is brought back up
9033:
9034: =item * B<con_failed>: unable to contact remote host and unable to save message
9035: for later delivery
9036:
9037: =item * B<error:>: an error a occurred, a description of the error follows the :
9038:
9039: =item * B<no_such_host>: unable to fund a host associated with the user/domain
9040: that was requested
9041:
9042: =back
9043:
9044: =head1 PUBLIC SUBROUTINES
9045:
9046: =head2 Session Environment Functions
9047:
9048: =over 4
9049:
9050: =item *
9051: X<appenv()>
9052: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9053: the user envirnoment file, and will be restored for each access this
9054: user makes during this session, also modifies the %env for the current
9055: process. Optional rolesarrayref - if defined contains a reference to an array
9056: of roles which are exempt from the restriction on modifying user.role entries
9057: in the user's environment.db and in %env.
9058:
9059: =item *
9060: X<delenv()>
9061: B<delenv($regexp)>: removes all items from the session
9062: environment file that matches the regular expression in $regexp. The
9063: values are also delted from the current processes %env.
9064:
9065: =item * get_env_multiple($name)
9066:
9067: gets $name from the %env hash, it seemlessly handles the cases where multiple
9068: values may be defined and end up as an array ref.
9069:
9070: returns an array of values
9071:
9072: =back
9073:
9074: =head2 User Information
9075:
9076: =over 4
9077:
9078: =item *
9079: X<queryauthenticate()>
9080: B<queryauthenticate($uname,$udom)>: try to determine user's current
9081: authentication scheme
9082:
9083: =item *
9084: X<authenticate()>
9085: B<authenticate($uname,$upass,$udom)>: try to
9086: authenticate user from domain's lib servers (first use the current
9087: one). C<$upass> should be the users password.
9088:
9089: =item *
9090: X<homeserver()>
9091: B<homeserver($uname,$udom)>: find the server which has
9092: the user's directory and files (there must be only one), this caches
9093: the answer, and also caches if there is a borken connection.
9094:
9095: =item *
9096: X<idget()>
9097: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9098: (IDs are a unique resource in a domain, there must be only 1 ID per
9099: username, and only 1 username per ID in a specific domain) (returns
9100: hash: id=>name,id=>name)
9101:
9102: =item *
9103: X<idrget()>
9104: B<idrget($udom,@unames)>: find the IDs behind a list of
9105: usernames (returns hash: name=>id,name=>id)
9106:
9107: =item *
9108: X<idput()>
9109: B<idput($udom,%ids)>: store away a list of names and associated IDs
9110:
9111: =item *
9112: X<rolesinit()>
9113: B<rolesinit($udom,$username,$authhost)>: get user privileges
9114:
9115: =item *
9116: X<getsection()>
9117: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9118: course $cname, return section name/number or '' for "not in course"
9119: and '-1' for "no section"
9120:
9121: =item *
9122: X<userenvironment()>
9123: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9124: passed in @what from the requested user's environment, returns a hash
9125:
9126: =item *
9127: X<userlog_query()>
9128: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9129: activity.log file. %filters defines filters applied when parsing the
9130: log file. These can be start or end timestamps, or the type of action
9131: - log to look for Login or Logout events, check for Checkin or
9132: Checkout, role for role selection. The response is in the form
9133: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9134: escaped strings of the action recorded in the activity.log file.
9135:
9136: =back
9137:
9138: =head2 User Roles
9139:
9140: =over 4
9141:
9142: =item *
9143:
9144: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9145: F: full access
9146: U,I,K: authentication modes (cxx only)
9147: '': forbidden
9148: 1: user needs to choose course
9149: 2: browse allowed
9150: A: passphrase authentication needed
9151:
9152: =item *
9153:
9154: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9155: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9156: and course level
9157:
9158: =item *
9159:
9160: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
9161: explanation of a user role term
9162:
9163: =item *
9164:
9165: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9166: All arguments are optional. Returns a hash of a roles, either for
9167: co-author/assistant author roles for a user's Construction Space
9168: (default), or if $context is 'userroles', roles for the user himself,
9169: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9170: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9171: For each key, value is set to colon-separated start and end times for
9172: the role. If no username and domain are specified, will default to
9173: current user/domain. Types, roles, and roledoms are references to arrays
9174: of role statuses (active, future or previous), roles
9175: (e.g., cc,in, st etc.) and domains of the roles which can be used
9176: to restrict the list of roles reported. If no array ref is
9177: provided for types, will default to return only active roles.
9178:
9179: =back
9180:
9181: =head2 User Modification
9182:
9183: =over 4
9184:
9185: =item *
9186:
9187: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9188: user for the level given by URL. Optional start and end dates (leave empty
9189: string or zero for "no date")
9190:
9191: =item *
9192:
9193: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9194: change a users, password, possible return values are: ok,
9195: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9196: refused
9197:
9198: =item *
9199:
9200: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9201:
9202: =item *
9203:
9204: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
9205: $forceid,$desiredhome,$email,$inststatus) :
9206: modify user
9207:
9208: =item *
9209:
9210: modifystudent
9211:
9212: modify a student's enrollment and identification information.
9213: The course id is resolved based on the current users environment.
9214: This means the envoking user must be a course coordinator or otherwise
9215: associated with a course.
9216:
9217: This call is essentially a wrapper for lonnet::modifyuser and
9218: lonnet::modify_student_enrollment
9219:
9220: Inputs:
9221:
9222: =over 4
9223:
9224: =item B<$udom> Student's loncapa domain
9225:
9226: =item B<$uname> Student's loncapa login name
9227:
9228: =item B<$uid> Student/Employee ID
9229:
9230: =item B<$umode> Student's authentication mode
9231:
9232: =item B<$upass> Student's password
9233:
9234: =item B<$first> Student's first name
9235:
9236: =item B<$middle> Student's middle name
9237:
9238: =item B<$last> Student's last name
9239:
9240: =item B<$gene> Student's generation
9241:
9242: =item B<$usec> Student's section in course
9243:
9244: =item B<$end> Unix time of the roles expiration
9245:
9246: =item B<$start> Unix time of the roles start date
9247:
9248: =item B<$forceid> If defined, allow $uid to be changed
9249:
9250: =item B<$desiredhome> server to use as home server for student
9251:
9252: =item B<$email> Student's permanent e-mail address
9253:
9254: =item B<$type> Type of enrollment (auto or manual)
9255:
9256: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
9257:
9258: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
9259:
9260: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
9261:
9262: =item B<$context> role change context (shown in User Management Logs display in a course)
9263:
9264: =item B<$inststatus> institutional status of user - : separated string of escaped status types
9265:
9266: =back
9267:
9268: =item *
9269:
9270: modify_student_enrollment
9271:
9272: Change a students enrollment status in a class. The environment variable
9273: 'role.request.course' must be defined for this function to proceed.
9274:
9275: Inputs:
9276:
9277: =over 4
9278:
9279: =item $udom, students domain
9280:
9281: =item $uname, students name
9282:
9283: =item $uid, students user id
9284:
9285: =item $first, students first name
9286:
9287: =item $middle
9288:
9289: =item $last
9290:
9291: =item $gene
9292:
9293: =item $usec
9294:
9295: =item $end
9296:
9297: =item $start
9298:
9299: =item $type
9300:
9301: =item $locktype
9302:
9303: =item $cid
9304:
9305: =item $selfenroll
9306:
9307: =item $context
9308:
9309: =back
9310:
9311:
9312: =item *
9313:
9314: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9315: custom role; give a custom role to a user for the level given by URL. Specify
9316: name and domain of role author, and role name
9317:
9318: =item *
9319:
9320: revokerole($udom,$uname,$url,$role) : revoke a role for url
9321:
9322: =item *
9323:
9324: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9325:
9326: =back
9327:
9328: =head2 Course Infomation
9329:
9330: =over 4
9331:
9332: =item *
9333:
9334: coursedescription($courseid) : returns a hash of information about the
9335: specified course id, including all environment settings for the
9336: course, the description of the course will be in the hash under the
9337: key 'description'
9338:
9339: =item *
9340:
9341: resdata($name,$domain,$type,@which) : request for current parameter
9342: setting for a specific $type, where $type is either 'course' or 'user',
9343: @what should be a list of parameters to ask about. This routine caches
9344: answers for 5 minutes.
9345:
9346: =item *
9347:
9348: get_courseresdata($courseid, $domain) : dump the entire course resource
9349: data base, returning a hash that is keyed by the resource name and has
9350: values that are the resource value. I believe that the timestamps and
9351: versions are also returned.
9352:
9353:
9354: =back
9355:
9356: =head2 Course Modification
9357:
9358: =over 4
9359:
9360: =item *
9361:
9362: writecoursepref($courseid,%prefs) : write preferences (environment
9363: database) for a course
9364:
9365: =item *
9366:
9367: createcourse($udom,$description,$url) : make/modify course
9368:
9369: =back
9370:
9371: =head2 Resource Subroutines
9372:
9373: =over 4
9374:
9375: =item *
9376:
9377: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9378:
9379: =item *
9380:
9381: repcopy($filename) : subscribes to the requested file, and attempts to
9382: replicate from the owning library server, Might return
9383: 'unavailable', 'not_found', 'forbidden', 'ok', or
9384: 'bad_request', also attempts to grab the metadata for the
9385: resource. Expects the local filesystem pathname
9386: (/home/httpd/html/res/....)
9387:
9388: =back
9389:
9390: =head2 Resource Information
9391:
9392: =over 4
9393:
9394: =item *
9395:
9396: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9397: a vairety of different possible values, $varname should be a request
9398: string, and the other parameters can be used to specify who and what
9399: one is asking about.
9400:
9401: Possible values for $varname are environment.lastname (or other item
9402: from the envirnment hash), user.name (or someother aspect about the
9403: user), resource.0.maxtries (or some other part and parameter of a
9404: resource)
9405:
9406: =item *
9407:
9408: directcondval($number) : get current value of a condition; reads from a state
9409: string
9410:
9411: =item *
9412:
9413: condval($condidx) : value of condition index based on state
9414:
9415: =item *
9416:
9417: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9418: resource's metadata, $what should be either a specific key, or either
9419: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9420: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9421:
9422: this function automatically caches all requests
9423:
9424: =item *
9425:
9426: metadata_query($query,$custom,$customshow) : make a metadata query against the
9427: network of library servers; returns file handle of where SQL and regex results
9428: will be stored for query
9429:
9430: =item *
9431:
9432: symbread($filename) : return symbolic list entry (filename argument optional);
9433: returns the data handle
9434:
9435: =item *
9436:
9437: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9438: a possible symb for the URL in $thisfn, and if is an encryypted
9439: resource that the user accessed using /enc/ returns a 1 on success, 0
9440: on failure, user must be in a course, as it assumes the existance of
9441: the course initial hash, and uses $env('request.course.id'}
9442:
9443:
9444: =item *
9445:
9446: symbclean($symb) : removes versions numbers from a symb, returns the
9447: cleaned symb
9448:
9449: =item *
9450:
9451: is_on_map($uri) : checks if the $uri is somewhere on the current
9452: course map, user must be in a course for it to work.
9453:
9454: =item *
9455:
9456: numval($salt) : return random seed value (addend for rndseed)
9457:
9458: =item *
9459:
9460: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9461: a random seed, all arguments are optional, if they aren't sent it uses the
9462: environment to derive them. Note: if symb isn't sent and it can't get one
9463: from &symbread it will use the current time as its return value
9464:
9465: =item *
9466:
9467: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9468: unfakeable, receipt
9469:
9470: =item *
9471:
9472: receipt() : API to ireceipt working off of env values; given out to users
9473:
9474: =item *
9475:
9476: countacc($url) : count the number of accesses to a given URL
9477:
9478: =item *
9479:
9480: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9481:
9482: =item *
9483:
9484: checkin($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 $tcrsid)
9485:
9486: =item *
9487:
9488: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9489:
9490: =item *
9491:
9492: devalidate($symb) : devalidate temporary spreadsheet calculations,
9493: forcing spreadsheet to reevaluate the resource scores next time.
9494:
9495: =back
9496:
9497: =head2 Storing/Retreiving Data
9498:
9499: =over 4
9500:
9501: =item *
9502:
9503: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9504: for this url; hashref needs to be given and should be a \%hashname; the
9505: remaining args aren't required and if they aren't passed or are '' they will
9506: be derived from the env
9507:
9508: =item *
9509:
9510: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9511: uses critical subroutine
9512:
9513: =item *
9514:
9515: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9516: all args are optional
9517:
9518: =item *
9519:
9520: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9521: dumps the complete (or key matching regexp) namespace into a hash
9522: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9523: normally &store()ed into
9524:
9525: $range should be either an integer '100' (give me the first 100
9526: matching records)
9527: or be two integers sperated by a - with no spaces
9528: '30-50' (give me the 30th through the 50th matching
9529: records)
9530:
9531:
9532: =item *
9533:
9534: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9535: replaces a &store() version of data with a replacement set of data
9536: for a particular resource in a namespace passed in the $storehash hash
9537: reference
9538:
9539: =item *
9540:
9541: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9542: works very similar to store/cstore, but all data is stored in a
9543: temporary location and can be reset using tmpreset, $storehash should
9544: be a hash reference, returns nothing on success
9545:
9546: =item *
9547:
9548: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9549: similar to restore, but all data is stored in a temporary location and
9550: can be reset using tmpreset. Returns a hash of values on success,
9551: error string otherwise.
9552:
9553: =item *
9554:
9555: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9556: deltes all keys for $symb form the temporary storage hash.
9557:
9558: =item *
9559:
9560: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9561: reference filled in from namesp ($udom and $uname are optional)
9562:
9563: =item *
9564:
9565: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9566: namesp ($udom and $uname are optional)
9567:
9568: =item *
9569:
9570: dump($namespace,$udom,$uname,$regexp,$range) :
9571: dumps the complete (or key matching regexp) namespace into a hash
9572: ($udom, $uname, $regexp, $range are optional)
9573:
9574: $range should be either an integer '100' (give me the first 100
9575: matching records)
9576: or be two integers sperated by a - with no spaces
9577: '30-50' (give me the 30th through the 50th matching
9578: records)
9579: =item *
9580:
9581: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9582: $store can be a scalar, an array reference, or if the amount to be
9583: incremented is > 1, a hash reference.
9584:
9585: ($udom and $uname are optional)
9586:
9587: =item *
9588:
9589: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9590: ($udom and $uname are optional)
9591:
9592: =item *
9593:
9594: cput($namespace,$storehash,$udom,$uname) : critical put
9595: ($udom and $uname are optional)
9596:
9597: =item *
9598:
9599: newput($namespace,$storehash,$udom,$uname) :
9600:
9601: Attempts to store the items in the $storehash, but only if they don't
9602: currently exist, if this succeeds you can be certain that you have
9603: successfully created a new key value pair in the $namespace db.
9604:
9605:
9606: Args:
9607: $namespace: name of database to store values to
9608: $storehash: hashref to store to the db
9609: $udom: (optional) domain of user containing the db
9610: $uname: (optional) name of user caontaining the db
9611:
9612: Returns:
9613: 'ok' -> succeeded in storing all keys of $storehash
9614: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9615: least <key> already existed in the db (other
9616: requested keys may also already exist)
9617: 'error: <msg>' -> unable to tie the DB or other error occurred
9618: 'con_lost' -> unable to contact request server
9619: 'refused' -> action was not allowed by remote machine
9620:
9621:
9622: =item *
9623:
9624: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9625: reference filled in from namesp (encrypts the return communication)
9626: ($udom and $uname are optional)
9627:
9628: =item *
9629:
9630: log($udom,$name,$home,$message) : write to permanent log for user; use
9631: critical subroutine
9632:
9633: =item *
9634:
9635: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9636: array reference filled in from namespace found in domain level on either
9637: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9638:
9639: =item *
9640:
9641: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9642: domain level either on specified domain server ($uhome) or primary domain
9643: server ($udom and $uhome are optional)
9644:
9645: =item *
9646:
9647: get_domain_defaults($target_domain) : returns hash with defaults for
9648: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9649: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9650: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9651: Values are retrieved from cache (if current), or from domain's configuration.db
9652: (if available), or lastly from values in lonTabs/dns_domain,tab,
9653: or lonTabs/domain.tab.
9654:
9655: %domdefaults = &get_auth_defaults($target_domain);
9656:
9657: =back
9658:
9659: =head2 Network Status Functions
9660:
9661: =over 4
9662:
9663: =item *
9664:
9665: dirlist($uri) : return directory list based on URI
9666:
9667: =item *
9668:
9669: spareserver() : find server with least workload from spare.tab
9670:
9671: =back
9672:
9673: =head2 Apache Request
9674:
9675: =over 4
9676:
9677: =item *
9678:
9679: ssi($url,%hash) : server side include, does a complete request cycle on url to
9680: localhost, posts hash
9681:
9682: =back
9683:
9684: =head2 Data to String to Data
9685:
9686: =over 4
9687:
9688: =item *
9689:
9690: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9691: and '&' separators, supports elements that are arrayrefs and hashrefs
9692:
9693: =item *
9694:
9695: hashref2str($hashref) : convert a hashref into a string complete with
9696: escaping and '=' and '&' separators, supports elements that are
9697: arrayrefs and hashrefs
9698:
9699: =item *
9700:
9701: arrayref2str($arrayref) : convert an arrayref into a string complete
9702: with escaping and '&' separators, supports elements that are arrayrefs
9703: and hashrefs
9704:
9705: =item *
9706:
9707: str2hash($string) : convert string to hash using unescaping and
9708: splitting on '=' and '&', supports elements that are arrayrefs and
9709: hashrefs
9710:
9711: =item *
9712:
9713: str2array($string) : convert string to hash using unescaping and
9714: splitting on '&', supports elements that are arrayrefs and hashrefs
9715:
9716: =back
9717:
9718: =head2 Logging Routines
9719:
9720: =over 4
9721:
9722: These routines allow one to make log messages in the lonnet.log and
9723: lonnet.perm logfiles.
9724:
9725: =item *
9726:
9727: logtouch() : make sure the logfile, lonnet.log, exists
9728:
9729: =item *
9730:
9731: logthis() : append message to the normal lonnet.log file, it gets
9732: preiodically rolled over and deleted.
9733:
9734: =item *
9735:
9736: logperm() : append a permanent message to lonnet.perm.log, this log
9737: file never gets deleted by any automated portion of the system, only
9738: messages of critical importance should go in here.
9739:
9740: =back
9741:
9742: =head2 General File Helper Routines
9743:
9744: =over 4
9745:
9746: =item *
9747:
9748: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9749: (a) files in /uploaded
9750: (i) If a local copy of the file exists -
9751: compares modification date of local copy with last-modified date for
9752: definitive version stored on home server for course. If local copy is
9753: stale, requests a new version from the home server and stores it.
9754: If the original has been removed from the home server, then local copy
9755: is unlinked.
9756: (ii) If local copy does not exist -
9757: requests the file from the home server and stores it.
9758:
9759: If $caller is 'uploadrep':
9760: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9761: for request for files originally uploaded via DOCS.
9762: - returns 'ok' if fresh local copy now available, -1 otherwise.
9763:
9764: Otherwise:
9765: This indicates a call from the content generation phase of the request.
9766: - returns the entire contents of the file or -1.
9767:
9768: (b) files in /res
9769: - returns the entire contents of a file or -1;
9770: it properly subscribes to and replicates the file if neccessary.
9771:
9772:
9773: =item *
9774:
9775: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9776: reference
9777:
9778: returns either a stat() list of data about the file or an empty list
9779: if the file doesn't exist or couldn't find out about it (connection
9780: problems or user unknown)
9781:
9782: =item *
9783:
9784: filelocation($dir,$file) : returns file system location of a file
9785: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9786: directory that relative $file lookups are to looked in ($dir of /a/dir
9787: and a file of ../bob will become /a/bob)
9788:
9789: =item *
9790:
9791: hreflocation($dir,$file) : returns file system location or a URL; same as
9792: filelocation except for hrefs
9793:
9794: =item *
9795:
9796: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9797:
9798: =back
9799:
9800: =head2 Usererfile file routines (/uploaded*)
9801:
9802: =over 4
9803:
9804: =item *
9805:
9806: userfileupload(): main rotine for putting a file in a user or course's
9807: filespace, arguments are,
9808:
9809: formname - required - this is the name of the element in $env where the
9810: filename, and the contents of the file to create/modifed exist
9811: the filename is in $env{'form.'.$formname.'.filename'} and the
9812: contents of the file is located in $env{'form.'.$formname}
9813: coursedoc - if true, store the file in the course of the active role
9814: of the current user
9815: subdir - required - subdirectory to put the file in under ../userfiles/
9816: if undefined, it will be placed in "unknown"
9817:
9818: (This routine calls clean_filename() to remove any dangerous
9819: characters from the filename, and then calls finuserfileupload() to
9820: complete the transaction)
9821:
9822: returns either the url of the uploaded file (/uploaded/....) if successful
9823: and /adm/notfound.html if unsuccessful
9824:
9825: =item *
9826:
9827: clean_filename(): routine for cleaing a filename up for storage in
9828: userfile space, argument is:
9829:
9830: filename - proposed filename
9831:
9832: returns: the new clean filename
9833:
9834: =item *
9835:
9836: finishuserfileupload(): routine that creaes and sends the file to
9837: userspace, probably shouldn't be called directly
9838:
9839: docuname: username or courseid of destination for the file
9840: docudom: domain of user/course of destination for the file
9841: formname: same as for userfileupload()
9842: fname: filename (inculding subdirectories) for the file
9843:
9844: returns either the url of the uploaded file (/uploaded/....) if successful
9845: and /adm/notfound.html if unsuccessful
9846:
9847: =item *
9848:
9849: renameuserfile(): renames an existing userfile to a new name
9850:
9851: Args:
9852: docuname: username or courseid of destination for the file
9853: docudom: domain of user/course of destination for the file
9854: old: current file name (including any subdirs under userfiles)
9855: new: desired file name (including any subdirs under userfiles)
9856:
9857: =item *
9858:
9859: mkdiruserfile(): creates a directory is a userfiles dir
9860:
9861: Args:
9862: docuname: username or courseid of destination for the file
9863: docudom: domain of user/course of destination for the file
9864: dir: dir to create (including any subdirs under userfiles)
9865:
9866: =item *
9867:
9868: removeuserfile(): removes a file that exists in userfiles
9869:
9870: Args:
9871: docuname: username or courseid of destination for the file
9872: docudom: domain of user/course of destination for the file
9873: fname: filname to delete (including any subdirs under userfiles)
9874:
9875: =item *
9876:
9877: removeuploadedurl(): convience function for removeuserfile()
9878:
9879: Args:
9880: url: a full /uploaded/... url to delete
9881:
9882: =item *
9883:
9884: get_portfile_permissions():
9885: Args:
9886: domain: domain of user or course contain the portfolio files
9887: user: name of user or num of course contain the portfolio files
9888: Returns:
9889: hashref of a dump of the proper file_permissions.db
9890:
9891:
9892: =item *
9893:
9894: get_access_controls():
9895:
9896: Args:
9897: current_permissions: the hash ref returned from get_portfile_permissions()
9898: group: (optional) the group you want the files associated with
9899: file: (optional) the file you want access info on
9900:
9901: Returns:
9902: a hash (keys are file names) of hashes containing
9903: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9904: values are XML containing access control settings (see below)
9905:
9906: Internal notes:
9907:
9908: access controls are stored in file_permissions.db as key=value pairs.
9909: key -> path to file/file_name\0uniqueID:scope_end_start
9910: where scope -> public,guest,course,group,domains or users.
9911: end -> UNIX time for end of access (0 -> no end date)
9912: start -> UNIX time for start of access
9913:
9914: value -> XML description of access control
9915: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9916: <start></start>
9917: <end></end>
9918:
9919: <password></password> for scope type = guest
9920:
9921: <domain></domain> for scope type = course or group
9922: <number></number>
9923: <roles id="">
9924: <role></role>
9925: <access></access>
9926: <section></section>
9927: <group></group>
9928: </roles>
9929:
9930: <dom></dom> for scope type = domains
9931:
9932: <users> for scope type = users
9933: <user>
9934: <uname></uname>
9935: <udom></udom>
9936: </user>
9937: </users>
9938: </scope>
9939:
9940: Access data is also aggregated for each file in an additional key=value pair:
9941: key -> path to file/file_name\0accesscontrol
9942: value -> reference to hash
9943: hash contains key = value pairs
9944: where key = uniqueID:scope_end_start
9945: value = UNIX time record was last updated
9946:
9947: Used to improve speed of look-ups of access controls for each file.
9948:
9949: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9950:
9951: modify_access_controls():
9952:
9953: Modifies access controls for a portfolio file
9954: Args
9955: 1. file name
9956: 2. reference to hash of required changes,
9957: 3. domain
9958: 4. username
9959: where domain,username are the domain of the portfolio owner
9960: (either a user or a course)
9961:
9962: Returns:
9963: 1. result of additions or updates ('ok' or 'error', with error message).
9964: 2. result of deletions ('ok' or 'error', with error message).
9965: 3. reference to hash of any new or updated access controls.
9966: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9967: key = integer (inbound ID)
9968: value = uniqueID
9969:
9970: =back
9971:
9972: =head2 HTTP Helper Routines
9973:
9974: =over 4
9975:
9976: =item *
9977:
9978: escape() : unpack non-word characters into CGI-compatible hex codes
9979:
9980: =item *
9981:
9982: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9983:
9984: =back
9985:
9986: =head1 PRIVATE SUBROUTINES
9987:
9988: =head2 Underlying communication routines (Shouldn't call)
9989:
9990: =over 4
9991:
9992: =item *
9993:
9994: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9995:
9996: =item *
9997:
9998: reply() : uses subreply to send a message to remote machine, logs all failures
9999:
10000: =item *
10001:
10002: critical() : passes a critical message to another server; if cannot
10003: get through then place message in connection buffer directory and
10004: returns con_delayed, if incapable of saving message, returns
10005: con_failed
10006:
10007: =item *
10008:
10009: reconlonc() : tries to reconnect lonc client processes.
10010:
10011: =back
10012:
10013: =head2 Resource Access Logging
10014:
10015: =over 4
10016:
10017: =item *
10018:
10019: flushcourselogs() : flush (save) buffer logs and access logs
10020:
10021: =item *
10022:
10023: courselog($what) : save message for course in hash
10024:
10025: =item *
10026:
10027: courseacclog($what) : save message for course using &courselog(). Perform
10028: special processing for specific resource types (problems, exams, quizzes, etc).
10029:
10030: =item *
10031:
10032: goodbye() : flush course logs and log shutting down; it is called in srm.conf
10033: as a PerlChildExitHandler
10034:
10035: =back
10036:
10037: =head2 Other
10038:
10039: =over 4
10040:
10041: =item *
10042:
10043: symblist($mapname,%newhash) : update symbolic storage links
10044:
10045: =back
10046:
10047: =cut
10048:
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