1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1001 2009/05/16 01:19:36 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol);
80:
81: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
82: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
83: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
84: %courseownerbuf, %coursetypebuf,$locknum);
85:
86: use IO::Socket;
87: use GDBM_File;
88: use HTML::LCParser;
89: use Fcntl qw(:flock);
90: use Storable qw(thaw nfreeze);
91: use Time::HiRes qw( gettimeofday tv_interval );
92: use Cache::Memcached;
93: use Digest::MD5;
94: use Math::Random;
95: use LONCAPA qw(:DEFAULT :match);
96: use LONCAPA::Configuration;
97:
98: my $readit;
99: my $max_connection_retries = 10; # Or some such value.
100:
101: my $upload_photo_form = 0; #Variable to check when user upload a photo 0=not 1=true
102:
103: require Exporter;
104:
105: our @ISA = qw (Exporter);
106: our @EXPORT = qw(%env);
107:
108:
109: # --------------------------------------------------------------------- Logging
110: {
111: my $logid;
112: sub instructor_log {
113: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
114: if (($cnum eq '') || ($cdom eq '')) {
115: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
116: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
117: }
118: $logid++;
119: my $now = time();
120: my $id=$now.'00000'.$$.'00000'.$logid;
121: return &Apache::lonnet::put('nohist_'.$hash_name,
122: { $id => {
123: 'exe_uname' => $env{'user.name'},
124: 'exe_udom' => $env{'user.domain'},
125: 'exe_time' => $now,
126: 'exe_ip' => $ENV{'REMOTE_ADDR'},
127: 'delflag' => $delflag,
128: 'logentry' => $storehash,
129: 'uname' => $uname,
130: 'udom' => $udom,
131: }
132: },$cdom,$cnum);
133: }
134: }
135:
136: sub logtouch {
137: my $execdir=$perlvar{'lonDaemons'};
138: unless (-e "$execdir/logs/lonnet.log") {
139: open(my $fh,">>$execdir/logs/lonnet.log");
140: close $fh;
141: }
142: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
143: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
144: }
145:
146: sub logthis {
147: my $message=shift;
148: my $execdir=$perlvar{'lonDaemons'};
149: my $now=time;
150: my $local=localtime($now);
151: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
152: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
153: print $fh $logstring;
154: close($fh);
155: }
156: return 1;
157: }
158:
159: sub logperm {
160: my $message=shift;
161: my $execdir=$perlvar{'lonDaemons'};
162: my $now=time;
163: my $local=localtime($now);
164: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
165: print $fh "$now:$message:$local\n";
166: close($fh);
167: }
168: return 1;
169: }
170:
171: sub create_connection {
172: my ($hostname,$lonid) = @_;
173: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
174: Type => SOCK_STREAM,
175: Timeout => 10);
176: return 0 if (!$client);
177: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
178: my $result = <$client>;
179: chomp($result);
180: return 1 if ($result eq 'done');
181: return 0;
182: }
183:
184: sub get_server_timezone {
185: my ($cnum,$cdom) = @_;
186: my $home=&homeserver($cnum,$cdom);
187: if ($home ne 'no_host') {
188: my $cachetime = 24*3600;
189: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
190: if (defined($cached)) {
191: return $timezone;
192: } else {
193: my $timezone = &reply('servertimezone',$home);
194: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
195: }
196: }
197: }
198:
199: sub get_server_loncaparev {
200: my ($dom,$lonhost) = @_;
201: if (defined($lonhost)) {
202: if (!defined(&hostname($lonhost))) {
203: undef($lonhost);
204: }
205: }
206: if (!defined($lonhost)) {
207: if (defined(&domain($dom,'primary'))) {
208: $lonhost=&domain($dom,'primary');
209: if ($lonhost eq 'no_host') {
210: undef($lonhost);
211: }
212: }
213: }
214: if (defined($lonhost)) {
215: my $cachetime = 24*3600;
216: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
217: if (defined($cached)) {
218: return $loncaparev;
219: } else {
220: my $loncaparev = &reply('serverloncaparev',$lonhost);
221: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
222: }
223: }
224: }
225:
226: # -------------------------------------------------- Non-critical communication
227: sub subreply {
228: my ($cmd,$server)=@_;
229: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
230: #
231: # With loncnew process trimming, there's a timing hole between lonc server
232: # process exit and the master server picking up the listen on the AF_UNIX
233: # socket. In that time interval, a lock file will exist:
234:
235: my $lockfile=$peerfile.".lock";
236: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
237: sleep(1);
238: }
239: # At this point, either a loncnew parent is listening or an old lonc
240: # or loncnew child is listening so we can connect or everything's dead.
241: #
242: # We'll give the connection a few tries before abandoning it. If
243: # connection is not possible, we'll con_lost back to the client.
244: #
245: my $client;
246: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
247: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
248: Type => SOCK_STREAM,
249: Timeout => 10);
250: if ($client) {
251: last; # Connected!
252: } else {
253: &create_connection(&hostname($server),$server);
254: }
255: sleep(1); # Try again later if failed connection.
256: }
257: my $answer;
258: if ($client) {
259: print $client "sethost:$server:$cmd\n";
260: $answer=<$client>;
261: if (!$answer) { $answer="con_lost"; }
262: chomp($answer);
263: } else {
264: $answer = 'con_lost'; # Failed connection.
265: }
266: return $answer;
267: }
268:
269: sub reply {
270: my ($cmd,$server)=@_;
271: unless (defined(&hostname($server))) { return 'no_such_host'; }
272: my $answer=subreply($cmd,$server);
273: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
274: &logthis("<font color=\"blue\">WARNING:".
275: " $cmd to $server returned $answer</font>");
276: }
277: return $answer;
278: }
279:
280: # ----------------------------------------------------------- Send USR1 to lonc
281:
282: sub reconlonc {
283: my ($lonid) = @_;
284: my $hostname = &hostname($lonid);
285: if ($lonid) {
286: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
287: if ($hostname && -e $peerfile) {
288: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
289: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
290: Type => SOCK_STREAM,
291: Timeout => 10);
292: if ($client) {
293: print $client ("reset_retries\n");
294: my $answer=<$client>;
295: #reset just this one.
296: }
297: }
298: return;
299: }
300:
301: &logthis("Trying to reconnect lonc");
302: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
303: if (open(my $fh,"<$loncfile")) {
304: my $loncpid=<$fh>;
305: chomp($loncpid);
306: if (kill 0 => $loncpid) {
307: &logthis("lonc at pid $loncpid responding, sending USR1");
308: kill USR1 => $loncpid;
309: sleep 1;
310: } else {
311: &logthis(
312: "<font color=\"blue\">WARNING:".
313: " lonc at pid $loncpid not responding, giving up</font>");
314: }
315: } else {
316: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
317: }
318: }
319:
320: # ------------------------------------------------------ Critical communication
321:
322: sub critical {
323: my ($cmd,$server)=@_;
324: unless (&hostname($server)) {
325: &logthis("<font color=\"blue\">WARNING:".
326: " Critical message to unknown server ($server)</font>");
327: return 'no_such_host';
328: }
329: my $answer=reply($cmd,$server);
330: if ($answer eq 'con_lost') {
331: &reconlonc("$perlvar{'lonSockDir'}/$server");
332: my $answer=reply($cmd,$server);
333: if ($answer eq 'con_lost') {
334: my $now=time;
335: my $middlename=$cmd;
336: $middlename=substr($middlename,0,16);
337: $middlename=~s/\W//g;
338: my $dfilename=
339: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
340: $dumpcount++;
341: {
342: my $dfh;
343: if (open($dfh,">$dfilename")) {
344: print $dfh "$cmd\n";
345: close($dfh);
346: }
347: }
348: sleep 2;
349: my $wcmd='';
350: {
351: my $dfh;
352: if (open($dfh,"<$dfilename")) {
353: $wcmd=<$dfh>;
354: close($dfh);
355: }
356: }
357: chomp($wcmd);
358: if ($wcmd eq $cmd) {
359: &logthis("<font color=\"blue\">WARNING: ".
360: "Connection buffer $dfilename: $cmd</font>");
361: &logperm("D:$server:$cmd");
362: return 'con_delayed';
363: } else {
364: &logthis("<font color=\"red\">CRITICAL:"
365: ." Critical connection failed: $server $cmd</font>");
366: &logperm("F:$server:$cmd");
367: return 'con_failed';
368: }
369: }
370: }
371: return $answer;
372: }
373:
374: # ------------------------------------------- check if return value is an error
375:
376: sub error {
377: my ($result) = @_;
378: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
379: if ($2 == 2) { return undef; }
380: return $1;
381: }
382: return undef;
383: }
384:
385: sub convert_and_load_session_env {
386: my ($lonidsdir,$handle)=@_;
387: my @profile;
388: {
389: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
390: if (!$opened) {
391: return 0;
392: }
393: flock($idf,LOCK_SH);
394: @profile=<$idf>;
395: close($idf);
396: }
397: my %temp_env;
398: foreach my $line (@profile) {
399: if ($line !~ m/=/) {
400: return 0;
401: }
402: chomp($line);
403: my ($envname,$envvalue)=split(/=/,$line,2);
404: $temp_env{&unescape($envname)} = &unescape($envvalue);
405: }
406: unlink("$lonidsdir/$handle.id");
407: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
408: 0640)) {
409: %disk_env = %temp_env;
410: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
411: untie(%disk_env);
412: }
413: return 1;
414: }
415:
416: # ------------------------------------------- Transfer profile into environment
417: my $env_loaded;
418: sub transfer_profile_to_env {
419: my ($lonidsdir,$handle,$force_transfer) = @_;
420: if (!$force_transfer && $env_loaded) { return; }
421:
422: if (!defined($lonidsdir)) {
423: $lonidsdir = $perlvar{'lonIDsDir'};
424: }
425: if (!defined($handle)) {
426: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
427: }
428:
429: my $convert;
430: {
431: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
432: if (!$opened) {
433: return;
434: }
435: flock($idf,LOCK_SH);
436: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
437: &GDBM_READER(),0640)) {
438: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
439: untie(%disk_env);
440: } else {
441: $convert = 1;
442: }
443: }
444: if ($convert) {
445: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
446: &logthis("Failed to load session, or convert session.");
447: }
448: }
449:
450: my %remove;
451: while ( my $envname = each(%env) ) {
452: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
453: if ($time < time-300) {
454: $remove{$key}++;
455: }
456: }
457: }
458:
459: $env{'user.environment'} = "$lonidsdir/$handle.id";
460: $env_loaded=1;
461: foreach my $expired_key (keys(%remove)) {
462: &delenv($expired_key);
463: }
464: }
465:
466: # ---------------------------------------------------- Check for valid session
467: sub check_for_valid_session {
468: my ($r) = @_;
469: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
470: my $lonid=$cookies{'lonID'};
471: return undef if (!$lonid);
472:
473: my $handle=&LONCAPA::clean_handle($lonid->value);
474: my $lonidsdir=$r->dir_config('lonIDsDir');
475: return undef if (!-e "$lonidsdir/$handle.id");
476:
477: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
478: return undef if (!$opened);
479:
480: flock($idf,LOCK_SH);
481: my %disk_env;
482: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
483: &GDBM_READER(),0640)) {
484: return undef;
485: }
486:
487: if (!defined($disk_env{'user.name'})
488: || !defined($disk_env{'user.domain'})) {
489: return undef;
490: }
491: return $handle;
492: }
493:
494: sub timed_flock {
495: my ($file,$lock_type) = @_;
496: my $failed=0;
497: eval {
498: local $SIG{__DIE__}='DEFAULT';
499: local $SIG{ALRM}=sub {
500: $failed=1;
501: die("failed lock");
502: };
503: alarm(13);
504: flock($file,$lock_type);
505: alarm(0);
506: };
507: if ($failed) {
508: return undef;
509: } else {
510: return 1;
511: }
512: }
513:
514: # ---------------------------------------------------------- Append Environment
515:
516: sub appenv {
517: my ($newenv,$roles) = @_;
518: if (ref($newenv) eq 'HASH') {
519: foreach my $key (keys(%{$newenv})) {
520: my $refused = 0;
521: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
522: $refused = 1;
523: if (ref($roles) eq 'ARRAY') {
524: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
525: if (grep(/^\Q$role\E$/,@{$roles})) {
526: $refused = 0;
527: }
528: }
529: }
530: if ($refused) {
531: &logthis("<font color=\"blue\">WARNING: ".
532: "Attempt to modify environment ".$key." to ".$newenv->{$key}
533: .'</font>');
534: delete($newenv->{$key});
535: } else {
536: $env{$key}=$newenv->{$key};
537: }
538: }
539: my $opened = open(my $env_file,'+<',$env{'user.environment'});
540: if ($opened
541: && &timed_flock($env_file,LOCK_EX)
542: &&
543: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
544: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
545: while (my ($key,$value) = each(%{$newenv})) {
546: $disk_env{$key} = $value;
547: }
548: untie(%disk_env);
549: }
550: }
551: return 'ok';
552: }
553: # ----------------------------------------------------- Delete from Environment
554:
555: sub delenv {
556: my ($delthis,$regexp) = @_;
557: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
558: &logthis("<font color=\"blue\">WARNING: ".
559: "Attempt to delete from environment ".$delthis);
560: return 'error';
561: }
562: my $opened = open(my $env_file,'+<',$env{'user.environment'});
563: if ($opened
564: && &timed_flock($env_file,LOCK_EX)
565: &&
566: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
567: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
568: foreach my $key (keys(%disk_env)) {
569: if ($regexp) {
570: if ($key=~/^$delthis/) {
571: delete($env{$key});
572: delete($disk_env{$key});
573: }
574: } else {
575: if ($key=~/^\Q$delthis\E/) {
576: delete($env{$key});
577: delete($disk_env{$key});
578: }
579: }
580: }
581: untie(%disk_env);
582: }
583: return 'ok';
584: }
585:
586: sub get_env_multiple {
587: my ($name) = @_;
588: my @values;
589: if (defined($env{$name})) {
590: # exists is it an array
591: if (ref($env{$name})) {
592: @values=@{ $env{$name} };
593: } else {
594: $values[0]=$env{$name};
595: }
596: }
597: return(@values);
598: }
599:
600: # ------------------------------------------------------------------- Locking
601:
602: sub set_lock {
603: my ($text)=@_;
604: $locknum++;
605: my $id=$$.'-'.$locknum;
606: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
607: 'session.lock.'.$id => $text});
608: return $id;
609: }
610:
611: sub get_locks {
612: my $num=0;
613: my %texts=();
614: foreach my $lock (split(/\,/,$env{'session.locks'})) {
615: if ($lock=~/\w/) {
616: $num++;
617: $texts{$lock}=$env{'session.lock.'.$lock};
618: }
619: }
620: return ($num,%texts);
621: }
622:
623: sub remove_lock {
624: my ($id)=@_;
625: my $newlocks='';
626: foreach my $lock (split(/\,/,$env{'session.locks'})) {
627: if (($lock=~/\w/) && ($lock ne $id)) {
628: $newlocks.=','.$lock;
629: }
630: }
631: &appenv({'session.locks' => $newlocks});
632: &delenv('session.lock.'.$id);
633: }
634:
635: sub remove_all_locks {
636: my $activelocks=$env{'session.locks'};
637: foreach my $lock (split(/\,/,$env{'session.locks'})) {
638: if ($lock=~/\w/) {
639: &remove_lock($lock);
640: }
641: }
642: }
643:
644:
645: # ------------------------------------------ Find out current server userload
646: sub userload {
647: my $numusers=0;
648: {
649: opendir(LONIDS,$perlvar{'lonIDsDir'});
650: my $filename;
651: my $curtime=time;
652: while ($filename=readdir(LONIDS)) {
653: next if ($filename eq '.' || $filename eq '..');
654: next if ($filename =~ /publicuser_\d+\.id/);
655: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
656: if ($curtime-$mtime < 1800) { $numusers++; }
657: }
658: closedir(LONIDS);
659: }
660: my $userloadpercent=0;
661: my $maxuserload=$perlvar{'lonUserLoadLim'};
662: if ($maxuserload) {
663: $userloadpercent=100*$numusers/$maxuserload;
664: }
665: $userloadpercent=sprintf("%.2f",$userloadpercent);
666: return $userloadpercent;
667: }
668:
669: # ------------------------------------------ Fight off request when overloaded
670:
671: sub overloaderror {
672: my ($r,$checkserver)=@_;
673: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
674: my $loadavg;
675: if ($checkserver eq $perlvar{'lonHostID'}) {
676: open(my $loadfile,'/proc/loadavg');
677: $loadavg=<$loadfile>;
678: $loadavg =~ s/\s.*//g;
679: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
680: close($loadfile);
681: } else {
682: $loadavg=&reply('load',$checkserver);
683: }
684: my $overload=$loadavg-100;
685: if ($overload>0) {
686: $r->err_headers_out->{'Retry-After'}=$overload;
687: $r->log_error('Overload of '.$overload.' on '.$checkserver);
688: return 413;
689: }
690: return '';
691: }
692:
693: # ------------------------------ Find server with least workload from spare.tab
694:
695: sub spareserver {
696: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
697: my $spare_server;
698: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
699: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
700: : $userloadpercent;
701:
702: foreach my $try_server (@{ $spareid{'primary'} }) {
703: ($spare_server, $lowest_load) =
704: &compare_server_load($try_server, $spare_server, $lowest_load);
705: }
706:
707: my $found_server = ($spare_server ne '' && $lowest_load < 100);
708:
709: if (!$found_server) {
710: foreach my $try_server (@{ $spareid{'default'} }) {
711: ($spare_server, $lowest_load) =
712: &compare_server_load($try_server, $spare_server, $lowest_load);
713: }
714: }
715:
716: if (!$want_server_name) {
717: my $protocol = 'http';
718: if ($protocol{$spare_server} eq 'https') {
719: $protocol = $protocol{$spare_server};
720: }
721: if (defined($spare_server)) {
722: my $hostname = &hostname($spare_server);
723: if (defined($hostname)) {
724: $spare_server = $protocol.'://'.$hostname;
725: }
726: }
727: }
728: return $spare_server;
729: }
730:
731: sub compare_server_load {
732: my ($try_server, $spare_server, $lowest_load) = @_;
733:
734: my $loadans = &reply('load', $try_server);
735: my $userloadans = &reply('userload',$try_server);
736:
737: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
738: next; #didn't get a number from the server
739: }
740:
741: my $load;
742: if ($loadans =~ /\d/) {
743: if ($userloadans =~ /\d/) {
744: #both are numbers, pick the bigger one
745: $load = ($loadans > $userloadans) ? $loadans
746: : $userloadans;
747: } else {
748: $load = $loadans;
749: }
750: } else {
751: $load = $userloadans;
752: }
753:
754: if (($load =~ /\d/) && ($load < $lowest_load)) {
755: $spare_server = $try_server;
756: $lowest_load = $load;
757: }
758: return ($spare_server,$lowest_load);
759: }
760:
761: # --------------------------- ask offload servers if user already has a session
762: sub find_existing_session {
763: my ($udom,$uname) = @_;
764: foreach my $try_server (@{ $spareid{'primary'} },
765: @{ $spareid{'default'} }) {
766: return $try_server if (&has_user_session($try_server, $udom, $uname));
767: }
768: return;
769: }
770:
771: # -------------------------------- ask if server already has a session for user
772: sub has_user_session {
773: my ($lonid,$udom,$uname) = @_;
774: my $result = &reply(join(':','userhassession',
775: map {&escape($_)} ($udom,$uname)),$lonid);
776: return 1 if ($result eq 'ok');
777:
778: return 0;
779: }
780:
781: # --------------------------------------------- Try to change a user's password
782:
783: sub changepass {
784: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
785: $currentpass = &escape($currentpass);
786: $newpass = &escape($newpass);
787: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
788: $server);
789: if (! $answer) {
790: &logthis("No reply on password change request to $server ".
791: "by $uname in domain $udom.");
792: } elsif ($answer =~ "^ok") {
793: &logthis("$uname in $udom successfully changed their password ".
794: "on $server.");
795: } elsif ($answer =~ "^pwchange_failure") {
796: &logthis("$uname in $udom was unable to change their password ".
797: "on $server. The action was blocked by either lcpasswd ".
798: "or pwchange");
799: } elsif ($answer =~ "^non_authorized") {
800: &logthis("$uname in $udom did not get their password correct when ".
801: "attempting to change it on $server.");
802: } elsif ($answer =~ "^auth_mode_error") {
803: &logthis("$uname in $udom attempted to change their password despite ".
804: "not being locally or internally authenticated on $server.");
805: } elsif ($answer =~ "^unknown_user") {
806: &logthis("$uname in $udom attempted to change their password ".
807: "on $server but were unable to because $server is not ".
808: "their home server.");
809: } elsif ($answer =~ "^refused") {
810: &logthis("$server refused to change $uname in $udom password because ".
811: "it was sent an unencrypted request to change the password.");
812: }
813: return $answer;
814: }
815:
816: # ----------------------- Try to determine user's current authentication scheme
817:
818: sub queryauthenticate {
819: my ($uname,$udom)=@_;
820: my $uhome=&homeserver($uname,$udom);
821: if (!$uhome) {
822: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
823: return 'no_host';
824: }
825: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
826: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
827: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
828: }
829: return $answer;
830: }
831:
832: # --------- Try to authenticate user from domain's lib servers (first this one)
833:
834: sub authenticate {
835: my ($uname,$upass,$udom,$checkdefauth)=@_;
836: $upass=&escape($upass);
837: $uname= &LONCAPA::clean_username($uname);
838: my $uhome=&homeserver($uname,$udom,1);
839: my $newhome;
840: if ((!$uhome) || ($uhome eq 'no_host')) {
841: # Maybe the machine was offline and only re-appeared again recently?
842: &reconlonc();
843: # One more
844: $uhome=&homeserver($uname,$udom,1);
845: if (($uhome eq 'no_host') && $checkdefauth) {
846: if (defined(&domain($udom,'primary'))) {
847: $newhome=&domain($udom,'primary');
848: }
849: if ($newhome ne '') {
850: $uhome = $newhome;
851: }
852: }
853: if ((!$uhome) || ($uhome eq 'no_host')) {
854: &logthis("User $uname at $udom is unknown in authenticate");
855: return 'no_host';
856: }
857: }
858: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
859: if ($answer eq 'authorized') {
860: if ($newhome) {
861: &logthis("User $uname at $udom authorized by $uhome, but needs account");
862: return 'no_account_on_host';
863: } else {
864: &logthis("User $uname at $udom authorized by $uhome");
865: return $uhome;
866: }
867: }
868: if ($answer eq 'non_authorized') {
869: &logthis("User $uname at $udom rejected by $uhome");
870: return 'no_host';
871: }
872: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
873: return 'no_host';
874: }
875:
876: # ---------------------- Find the homebase for a user from domain's lib servers
877:
878: my %homecache;
879: sub homeserver {
880: my ($uname,$udom,$ignoreBadCache)=@_;
881: my $index="$uname:$udom";
882:
883: if (exists($homecache{$index})) { return $homecache{$index}; }
884:
885: my %servers = &get_servers($udom,'library');
886: foreach my $tryserver (keys(%servers)) {
887: next if ($ignoreBadCache ne 'true' &&
888: exists($badServerCache{$tryserver}));
889:
890: my $answer=reply("home:$udom:$uname",$tryserver);
891: if ($answer eq 'found') {
892: delete($badServerCache{$tryserver});
893: return $homecache{$index}=$tryserver;
894: } elsif ($answer eq 'no_host') {
895: $badServerCache{$tryserver}=1;
896: }
897: }
898: return 'no_host';
899: }
900:
901: # ------------------------------------- Find the usernames behind a list of IDs
902:
903: sub idget {
904: my ($udom,@ids)=@_;
905: my %returnhash=();
906:
907: my %servers = &get_servers($udom,'library');
908: foreach my $tryserver (keys(%servers)) {
909: my $idlist=join('&',@ids);
910: $idlist=~tr/A-Z/a-z/;
911: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
912: my @answer=();
913: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
914: @answer=split(/\&/,$reply);
915: } ;
916: my $i;
917: for ($i=0;$i<=$#ids;$i++) {
918: if ($answer[$i]) {
919: $returnhash{$ids[$i]}=$answer[$i];
920: }
921: }
922: }
923: return %returnhash;
924: }
925:
926: # ------------------------------------- Find the IDs behind a list of usernames
927:
928: sub idrget {
929: my ($udom,@unames)=@_;
930: my %returnhash=();
931: foreach my $uname (@unames) {
932: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
933: }
934: return %returnhash;
935: }
936:
937: # ------------------------------- Store away a list of names and associated IDs
938:
939: sub idput {
940: my ($udom,%ids)=@_;
941: my %servers=();
942: foreach my $uname (keys(%ids)) {
943: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
944: my $uhom=&homeserver($uname,$udom);
945: if ($uhom ne 'no_host') {
946: my $id=&escape($ids{$uname});
947: $id=~tr/A-Z/a-z/;
948: my $esc_unam=&escape($uname);
949: if ($servers{$uhom}) {
950: $servers{$uhom}.='&'.$id.'='.$esc_unam;
951: } else {
952: $servers{$uhom}=$id.'='.$esc_unam;
953: }
954: }
955: }
956: foreach my $server (keys(%servers)) {
957: &critical('idput:'.$udom.':'.$servers{$server},$server);
958: }
959: }
960:
961: # ------------------------------------------- get items from domain db files
962:
963: sub get_dom {
964: my ($namespace,$storearr,$udom,$uhome)=@_;
965: my $items='';
966: foreach my $item (@$storearr) {
967: $items.=&escape($item).'&';
968: }
969: $items=~s/\&$//;
970: if (!$udom) {
971: $udom=$env{'user.domain'};
972: if (defined(&domain($udom,'primary'))) {
973: $uhome=&domain($udom,'primary');
974: } else {
975: undef($uhome);
976: }
977: } else {
978: if (!$uhome) {
979: if (defined(&domain($udom,'primary'))) {
980: $uhome=&domain($udom,'primary');
981: }
982: }
983: }
984: if ($udom && $uhome && ($uhome ne 'no_host')) {
985: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
986: my %returnhash;
987: if ($rep eq '' || $rep =~ /^error: 2 /) {
988: return %returnhash;
989: }
990: my @pairs=split(/\&/,$rep);
991: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
992: return @pairs;
993: }
994: my $i=0;
995: foreach my $item (@$storearr) {
996: $returnhash{$item}=&thaw_unescape($pairs[$i]);
997: $i++;
998: }
999: return %returnhash;
1000: } else {
1001: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1002: }
1003: }
1004:
1005: # -------------------------------------------- put items in domain db files
1006:
1007: sub put_dom {
1008: my ($namespace,$storehash,$udom,$uhome)=@_;
1009: if (!$udom) {
1010: $udom=$env{'user.domain'};
1011: if (defined(&domain($udom,'primary'))) {
1012: $uhome=&domain($udom,'primary');
1013: } else {
1014: undef($uhome);
1015: }
1016: } else {
1017: if (!$uhome) {
1018: if (defined(&domain($udom,'primary'))) {
1019: $uhome=&domain($udom,'primary');
1020: }
1021: }
1022: }
1023: if ($udom && $uhome && ($uhome ne 'no_host')) {
1024: my $items='';
1025: foreach my $item (keys(%$storehash)) {
1026: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1027: }
1028: $items=~s/\&$//;
1029: return &reply("putdom:$udom:$namespace:$items",$uhome);
1030: } else {
1031: &logthis("put_dom failed - no homeserver and/or domain");
1032: }
1033: }
1034:
1035: sub retrieve_inst_usertypes {
1036: my ($udom) = @_;
1037: my (%returnhash,@order);
1038: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1039: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1040: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1041: %returnhash = %{$domdefs{'inststatustypes'}};
1042: @order = @{$domdefs{'inststatusorder'}};
1043: } else {
1044: if (defined(&domain($udom,'primary'))) {
1045: my $uhome=&domain($udom,'primary');
1046: my $rep=&reply("inst_usertypes:$udom",$uhome);
1047: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1048: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1049: return (\%returnhash,\@order);
1050: }
1051: my ($hashitems,$orderitems) = split(/:/,$rep);
1052: my @pairs=split(/\&/,$hashitems);
1053: foreach my $item (@pairs) {
1054: my ($key,$value)=split(/=/,$item,2);
1055: $key = &unescape($key);
1056: next if ($key =~ /^error: 2 /);
1057: $returnhash{$key}=&thaw_unescape($value);
1058: }
1059: my @esc_order = split(/\&/,$orderitems);
1060: foreach my $item (@esc_order) {
1061: push(@order,&unescape($item));
1062: }
1063: } else {
1064: &logthis("get_dom failed - no primary domain server for $udom");
1065: }
1066: }
1067: return (\%returnhash,\@order);
1068: }
1069:
1070: sub is_domainimage {
1071: my ($url) = @_;
1072: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1073: if (&domain($1) ne '') {
1074: return '1';
1075: }
1076: }
1077: return;
1078: }
1079:
1080: sub inst_directory_query {
1081: my ($srch) = @_;
1082: my $udom = $srch->{'srchdomain'};
1083: my %results;
1084: my $homeserver = &domain($udom,'primary');
1085: my $outcome;
1086: if ($homeserver ne '') {
1087: my $queryid=&reply("querysend:instdirsearch:".
1088: &escape($srch->{'srchby'}).':'.
1089: &escape($srch->{'srchterm'}).':'.
1090: &escape($srch->{'srchtype'}),$homeserver);
1091: my $host=&hostname($homeserver);
1092: if ($queryid !~/^\Q$host\E\_/) {
1093: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1094: return;
1095: }
1096: my $response = &get_query_reply($queryid);
1097: my $maxtries = 5;
1098: my $tries = 1;
1099: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1100: $response = &get_query_reply($queryid);
1101: $tries ++;
1102: }
1103:
1104: if (!&error($response) && $response ne 'refused') {
1105: if ($response eq 'unavailable') {
1106: $outcome = $response;
1107: } else {
1108: $outcome = 'ok';
1109: my @matches = split(/\n/,$response);
1110: foreach my $match (@matches) {
1111: my ($key,$value) = split(/=/,$match);
1112: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1113: }
1114: }
1115: }
1116: }
1117: return ($outcome,%results);
1118: }
1119:
1120: sub usersearch {
1121: my ($srch) = @_;
1122: my $dom = $srch->{'srchdomain'};
1123: my %results;
1124: my %libserv = &all_library();
1125: my $query = 'usersearch';
1126: foreach my $tryserver (keys(%libserv)) {
1127: if (&host_domain($tryserver) eq $dom) {
1128: my $host=&hostname($tryserver);
1129: my $queryid=
1130: &reply("querysend:".&escape($query).':'.
1131: &escape($srch->{'srchby'}).':'.
1132: &escape($srch->{'srchtype'}).':'.
1133: &escape($srch->{'srchterm'}),$tryserver);
1134: if ($queryid !~/^\Q$host\E\_/) {
1135: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1136: next;
1137: }
1138: my $reply = &get_query_reply($queryid);
1139: my $maxtries = 1;
1140: my $tries = 1;
1141: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1142: $reply = &get_query_reply($queryid);
1143: $tries ++;
1144: }
1145: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1146: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1147: } else {
1148: my @matches;
1149: if ($reply =~ /\n/) {
1150: @matches = split(/\n/,$reply);
1151: } else {
1152: @matches = split(/\&/,$reply);
1153: }
1154: foreach my $match (@matches) {
1155: my ($uname,$udom,%userhash);
1156: foreach my $entry (split(/:/,$match)) {
1157: my ($key,$value) =
1158: map {&unescape($_);} split(/=/,$entry);
1159: $userhash{$key} = $value;
1160: if ($key eq 'username') {
1161: $uname = $value;
1162: } elsif ($key eq 'domain') {
1163: $udom = $value;
1164: }
1165: }
1166: $results{$uname.':'.$udom} = \%userhash;
1167: }
1168: }
1169: }
1170: }
1171: return %results;
1172: }
1173:
1174: sub get_instuser {
1175: my ($udom,$uname,$id) = @_;
1176: my $homeserver = &domain($udom,'primary');
1177: my ($outcome,%results);
1178: if ($homeserver ne '') {
1179: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1180: &escape($id).':'.&escape($udom),$homeserver);
1181: my $host=&hostname($homeserver);
1182: if ($queryid !~/^\Q$host\E\_/) {
1183: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1184: return;
1185: }
1186: my $response = &get_query_reply($queryid);
1187: my $maxtries = 5;
1188: my $tries = 1;
1189: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1190: $response = &get_query_reply($queryid);
1191: $tries ++;
1192: }
1193: if (!&error($response) && $response ne 'refused') {
1194: if ($response eq 'unavailable') {
1195: $outcome = $response;
1196: } else {
1197: $outcome = 'ok';
1198: my @matches = split(/\n/,$response);
1199: foreach my $match (@matches) {
1200: my ($key,$value) = split(/=/,$match);
1201: $results{&unescape($key)} = &thaw_unescape($value);
1202: }
1203: }
1204: }
1205: }
1206: my %userinfo;
1207: if (ref($results{$uname}) eq 'HASH') {
1208: %userinfo = %{$results{$uname}};
1209: }
1210: return ($outcome,%userinfo);
1211: }
1212:
1213: sub inst_rulecheck {
1214: my ($udom,$uname,$id,$item,$rules) = @_;
1215: my %returnhash;
1216: if ($udom ne '') {
1217: if (ref($rules) eq 'ARRAY') {
1218: @{$rules} = map {&escape($_);} (@{$rules});
1219: my $rulestr = join(':',@{$rules});
1220: my $homeserver=&domain($udom,'primary');
1221: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1222: my $response;
1223: if ($item eq 'username') {
1224: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1225: ':'.&escape($uname).':'.$rulestr,
1226: $homeserver));
1227: } elsif ($item eq 'id') {
1228: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1229: ':'.&escape($id).':'.$rulestr,
1230: $homeserver));
1231: } elsif ($item eq 'selfcreate') {
1232: $response=&unescape(&reply('instselfcreatecheck:'.
1233: &escape($udom).':'.&escape($uname).
1234: ':'.$rulestr,$homeserver));
1235: }
1236: if ($response ne 'refused') {
1237: my @pairs=split(/\&/,$response);
1238: foreach my $item (@pairs) {
1239: my ($key,$value)=split(/=/,$item,2);
1240: $key = &unescape($key);
1241: next if ($key =~ /^error: 2 /);
1242: $returnhash{$key}=&thaw_unescape($value);
1243: }
1244: }
1245: }
1246: }
1247: }
1248: return %returnhash;
1249: }
1250:
1251: sub inst_userrules {
1252: my ($udom,$check) = @_;
1253: my (%ruleshash,@ruleorder);
1254: if ($udom ne '') {
1255: my $homeserver=&domain($udom,'primary');
1256: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1257: my $response;
1258: if ($check eq 'id') {
1259: $response=&reply('instidrules:'.&escape($udom),
1260: $homeserver);
1261: } elsif ($check eq 'email') {
1262: $response=&reply('instemailrules:'.&escape($udom),
1263: $homeserver);
1264: } else {
1265: $response=&reply('instuserrules:'.&escape($udom),
1266: $homeserver);
1267: }
1268: if (($response ne 'refused') && ($response ne 'error') &&
1269: ($response ne 'unknown_cmd') &&
1270: ($response ne 'no_such_host')) {
1271: my ($hashitems,$orderitems) = split(/:/,$response);
1272: my @pairs=split(/\&/,$hashitems);
1273: foreach my $item (@pairs) {
1274: my ($key,$value)=split(/=/,$item,2);
1275: $key = &unescape($key);
1276: next if ($key =~ /^error: 2 /);
1277: $ruleshash{$key}=&thaw_unescape($value);
1278: }
1279: my @esc_order = split(/\&/,$orderitems);
1280: foreach my $item (@esc_order) {
1281: push(@ruleorder,&unescape($item));
1282: }
1283: }
1284: }
1285: }
1286: return (\%ruleshash,\@ruleorder);
1287: }
1288:
1289: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1290:
1291: sub get_domain_defaults {
1292: my ($domain) = @_;
1293: my $cachetime = 60*60*24;
1294: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1295: if (defined($cached)) {
1296: if (ref($result) eq 'HASH') {
1297: return %{$result};
1298: }
1299: }
1300: my %domdefaults;
1301: my %domconfig =
1302: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1303: 'requestcourses','inststatus'],$domain);
1304: if (ref($domconfig{'defaults'}) eq 'HASH') {
1305: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1306: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1307: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1308: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1309: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1310: } else {
1311: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1312: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1313: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1314: }
1315: if (ref($domconfig{'quotas'}) eq 'HASH') {
1316: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1317: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1318: } else {
1319: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1320: }
1321: my @usertools = ('aboutme','blog','portfolio');
1322: foreach my $item (@usertools) {
1323: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1324: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1325: }
1326: }
1327: }
1328: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1329: foreach my $item ('official','unofficial') {
1330: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1331: }
1332: }
1333: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1334: foreach my $item ('inststatustypes','inststatusorder') {
1335: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1336: }
1337: }
1338: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1339: $cachetime);
1340: return %domdefaults;
1341: }
1342:
1343: # --------------------------------------------------- Assign a key to a student
1344:
1345: sub assign_access_key {
1346: #
1347: # a valid key looks like uname:udom#comments
1348: # comments are being appended
1349: #
1350: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1351: $kdom=
1352: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1353: $knum=
1354: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1355: $cdom=
1356: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1357: $cnum=
1358: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1359: $udom=$env{'user.name'} unless (defined($udom));
1360: $uname=$env{'user.domain'} unless (defined($uname));
1361: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1362: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1363: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1364: # assigned to this person
1365: # - this should not happen,
1366: # unless something went wrong
1367: # the first time around
1368: # ready to assign
1369: $logentry=$1.'; '.$logentry;
1370: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1371: $kdom,$knum) eq 'ok') {
1372: # key now belongs to user
1373: my $envkey='key.'.$cdom.'_'.$cnum;
1374: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1375: &appenv({'environment.'.$envkey => $ckey});
1376: return 'ok';
1377: } else {
1378: return
1379: 'error: Count not permanently assign key, will need to be re-entered later.';
1380: }
1381: } else {
1382: return 'error: Could not assign key, try again later.';
1383: }
1384: } elsif (!$existing{$ckey}) {
1385: # the key does not exist
1386: return 'error: The key does not exist';
1387: } else {
1388: # the key is somebody else's
1389: return 'error: The key is already in use';
1390: }
1391: }
1392:
1393: # ------------------------------------------ put an additional comment on a key
1394:
1395: sub comment_access_key {
1396: #
1397: # a valid key looks like uname:udom#comments
1398: # comments are being appended
1399: #
1400: my ($ckey,$cdom,$cnum,$logentry)=@_;
1401: $cdom=
1402: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1403: $cnum=
1404: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1405: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1406: if ($existing{$ckey}) {
1407: $existing{$ckey}.='; '.$logentry;
1408: # ready to assign
1409: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1410: $cdom,$cnum) eq 'ok') {
1411: return 'ok';
1412: } else {
1413: return 'error: Count not store comment.';
1414: }
1415: } else {
1416: # the key does not exist
1417: return 'error: The key does not exist';
1418: }
1419: }
1420:
1421: # ------------------------------------------------------ Generate a set of keys
1422:
1423: sub generate_access_keys {
1424: my ($number,$cdom,$cnum,$logentry)=@_;
1425: $cdom=
1426: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1427: $cnum=
1428: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1429: unless (&allowed('mky',$cdom)) { return 0; }
1430: unless (($cdom) && ($cnum)) { return 0; }
1431: if ($number>10000) { return 0; }
1432: sleep(2); # make sure don't get same seed twice
1433: srand(time()^($$+($$<<15))); # from "Programming Perl"
1434: my $total=0;
1435: for (my $i=1;$i<=$number;$i++) {
1436: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1437: sprintf("%lx",int(100000*rand)).'-'.
1438: sprintf("%lx",int(100000*rand));
1439: $newkey=~s/1/g/g; # folks mix up 1 and l
1440: $newkey=~s/0/h/g; # and also 0 and O
1441: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1442: if ($existing{$newkey}) {
1443: $i--;
1444: } else {
1445: if (&put('accesskeys',
1446: { $newkey => '# generated '.localtime().
1447: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1448: '; '.$logentry },
1449: $cdom,$cnum) eq 'ok') {
1450: $total++;
1451: }
1452: }
1453: }
1454: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1455: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1456: return $total;
1457: }
1458:
1459: # ------------------------------------------------------- Validate an accesskey
1460:
1461: sub validate_access_key {
1462: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1463: $cdom=
1464: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1465: $cnum=
1466: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1467: $udom=$env{'user.domain'} unless (defined($udom));
1468: $uname=$env{'user.name'} unless (defined($uname));
1469: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1470: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1471: }
1472:
1473: # ------------------------------------- Find the section of student in a course
1474: sub devalidate_getsection_cache {
1475: my ($udom,$unam,$courseid)=@_;
1476: my $hashid="$udom:$unam:$courseid";
1477: &devalidate_cache_new('getsection',$hashid);
1478: }
1479:
1480: sub courseid_to_courseurl {
1481: my ($courseid) = @_;
1482: #already url style courseid
1483: return $courseid if ($courseid =~ m{^/});
1484:
1485: if (exists($env{'course.'.$courseid.'.num'})) {
1486: my $cnum = $env{'course.'.$courseid.'.num'};
1487: my $cdom = $env{'course.'.$courseid.'.domain'};
1488: return "/$cdom/$cnum";
1489: }
1490:
1491: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1492: if (exists($courseinfo{'num'})) {
1493: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1494: }
1495:
1496: return undef;
1497: }
1498:
1499: sub getsection {
1500: my ($udom,$unam,$courseid)=@_;
1501: my $cachetime=1800;
1502:
1503: my $hashid="$udom:$unam:$courseid";
1504: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1505: if (defined($cached)) { return $result; }
1506:
1507: my %Pending;
1508: my %Expired;
1509: #
1510: # Each role can either have not started yet (pending), be active,
1511: # or have expired.
1512: #
1513: # If there is an active role, we are done.
1514: #
1515: # If there is more than one role which has not started yet,
1516: # choose the one which will start sooner
1517: # If there is one role which has not started yet, return it.
1518: #
1519: # If there is more than one expired role, choose the one which ended last.
1520: # If there is a role which has expired, return it.
1521: #
1522: $courseid = &courseid_to_courseurl($courseid);
1523: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1524: foreach my $key (keys(%roleshash)) {
1525: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1526: my $section=$1;
1527: if ($key eq $courseid.'_st') { $section=''; }
1528: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1529: my $now=time;
1530: if (defined($end) && $end && ($now > $end)) {
1531: $Expired{$end}=$section;
1532: next;
1533: }
1534: if (defined($start) && $start && ($now < $start)) {
1535: $Pending{$start}=$section;
1536: next;
1537: }
1538: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1539: }
1540: #
1541: # Presumedly there will be few matching roles from the above
1542: # loop and the sorting time will be negligible.
1543: if (scalar(keys(%Pending))) {
1544: my ($time) = sort {$a <=> $b} keys(%Pending);
1545: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1546: }
1547: if (scalar(keys(%Expired))) {
1548: my @sorted = sort {$a <=> $b} keys(%Expired);
1549: my $time = pop(@sorted);
1550: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1551: }
1552: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1553: }
1554:
1555: sub save_cache {
1556: &purge_remembered();
1557: #&Apache::loncommon::validate_page();
1558: undef(%env);
1559: undef($env_loaded);
1560: }
1561:
1562: my $to_remember=-1;
1563: my %remembered;
1564: my %accessed;
1565: my $kicks=0;
1566: my $hits=0;
1567: sub make_key {
1568: my ($name,$id) = @_;
1569: if (length($id) > 65
1570: && length(&escape($id)) > 200) {
1571: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1572: }
1573: return &escape($name.':'.$id);
1574: }
1575:
1576: sub devalidate_cache_new {
1577: my ($name,$id,$debug) = @_;
1578: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1579: $id=&make_key($name,$id);
1580: $memcache->delete($id);
1581: delete($remembered{$id});
1582: delete($accessed{$id});
1583: }
1584:
1585: sub is_cached_new {
1586: my ($name,$id,$debug) = @_;
1587: $id=&make_key($name,$id);
1588: if (exists($remembered{$id})) {
1589: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1590: $accessed{$id}=[&gettimeofday()];
1591: $hits++;
1592: return ($remembered{$id},1);
1593: }
1594: my $value = $memcache->get($id);
1595: if (!(defined($value))) {
1596: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1597: return (undef,undef);
1598: }
1599: if ($value eq '__undef__') {
1600: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1601: $value=undef;
1602: }
1603: &make_room($id,$value,$debug);
1604: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1605: return ($value,1);
1606: }
1607:
1608: sub do_cache_new {
1609: my ($name,$id,$value,$time,$debug) = @_;
1610: $id=&make_key($name,$id);
1611: my $setvalue=$value;
1612: if (!defined($setvalue)) {
1613: $setvalue='__undef__';
1614: }
1615: if (!defined($time) ) {
1616: $time=600;
1617: }
1618: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1619: my $result = $memcache->set($id,$setvalue,$time);
1620: if (! $result) {
1621: &logthis("caching of id -> $id failed");
1622: $memcache->disconnect_all();
1623: }
1624: # need to make a copy of $value
1625: &make_room($id,$value,$debug);
1626: return $value;
1627: }
1628:
1629: sub make_room {
1630: my ($id,$value,$debug)=@_;
1631:
1632: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1633: : $value;
1634: if ($to_remember<0) { return; }
1635: $accessed{$id}=[&gettimeofday()];
1636: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1637: my $to_kick;
1638: my $max_time=0;
1639: foreach my $other (keys(%accessed)) {
1640: if (&tv_interval($accessed{$other}) > $max_time) {
1641: $to_kick=$other;
1642: $max_time=&tv_interval($accessed{$other});
1643: }
1644: }
1645: delete($remembered{$to_kick});
1646: delete($accessed{$to_kick});
1647: $kicks++;
1648: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1649: return;
1650: }
1651:
1652: sub purge_remembered {
1653: #&logthis("Tossing ".scalar(keys(%remembered)));
1654: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1655: undef(%remembered);
1656: undef(%accessed);
1657: }
1658: # ------------------------------------- Read an entry from a user's environment
1659:
1660: sub userenvironment {
1661: my ($udom,$unam,@what)=@_;
1662: my $items;
1663: foreach my $item (@what) {
1664: $items.=&escape($item).'&';
1665: }
1666: $items=~s/\&$//;
1667: my %returnhash=();
1668: my @answer=split(/\&/,
1669: &reply('get:'.$udom.':'.$unam.':environment:'.$items,
1670: &homeserver($unam,$udom)));
1671: my $i;
1672: for ($i=0;$i<=$#what;$i++) {
1673: $returnhash{$what[$i]}=&unescape($answer[$i]);
1674: }
1675: return %returnhash;
1676: }
1677:
1678: # ---------------------------------------------------------- Get a studentphoto
1679: sub studentphoto {
1680: my ($udom,$unam,$ext) = @_;
1681: my $home=&Apache::lonnet::homeserver($unam,$udom);
1682: if (defined($env{'request.course.id'})) {
1683: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1684: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1685: return(&retrievestudentphoto($udom,$unam,$ext));
1686: } else {
1687: my ($result,$perm_reqd)=
1688: &Apache::lonnet::auto_photo_permission($unam,$udom);
1689: if ($result eq 'ok') {
1690: if (!($perm_reqd eq 'yes')) {
1691: return(&retrievestudentphoto($udom,$unam,$ext));
1692: }
1693: }
1694: }
1695: }
1696: } else {
1697: my ($result,$perm_reqd) =
1698: &Apache::lonnet::auto_photo_permission($unam,$udom);
1699: if ($result eq 'ok') {
1700: if (!($perm_reqd eq 'yes')) {
1701: return(&retrievestudentphoto($udom,$unam,$ext));
1702: }
1703: }
1704: }
1705: return '/adm/lonKaputt/lonlogo_broken.gif';
1706: }
1707:
1708: sub retrievestudentphoto {
1709: my ($udom,$unam,$ext,$type) = @_;
1710: my $home=&Apache::lonnet::homeserver($unam,$udom);
1711: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1712: if ($ret eq 'ok') {
1713: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1714: if ($type eq 'thumbnail') {
1715: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1716: }
1717: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1718: return $tokenurl;
1719: } else {
1720: if ($type eq 'thumbnail') {
1721: return '/adm/lonKaputt/genericstudent_tn.gif';
1722: } else {
1723: return '/adm/lonKaputt/lonlogo_broken.gif';
1724: }
1725: }
1726: }
1727:
1728: # -------------------------------------------------------------------- New chat
1729:
1730: sub chatsend {
1731: my ($newentry,$anon,$group)=@_;
1732: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1733: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1734: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1735: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1736: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1737: &escape($newentry)).':'.$group,$chome);
1738: }
1739:
1740: # ------------------------------------------ Find current version of a resource
1741:
1742: sub getversion {
1743: my $fname=&clutter(shift);
1744: unless ($fname=~/^\/res\//) { return -1; }
1745: return ¤tversion(&filelocation('',$fname));
1746: }
1747:
1748: sub currentversion {
1749: my $fname=shift;
1750: my ($result,$cached)=&is_cached_new('resversion',$fname);
1751: if (defined($cached)) { return $result; }
1752: my $author=$fname;
1753: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1754: my ($udom,$uname)=split(/\//,$author);
1755: my $home=homeserver($uname,$udom);
1756: if ($home eq 'no_host') {
1757: return -1;
1758: }
1759: my $answer=reply("currentversion:$fname",$home);
1760: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1761: return -1;
1762: }
1763: return &do_cache_new('resversion',$fname,$answer,600);
1764: }
1765:
1766: # ----------------------------- Subscribe to a resource, return URL if possible
1767:
1768: sub subscribe {
1769: my $fname=shift;
1770: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1771: $fname=~s/[\n\r]//g;
1772: my $author=$fname;
1773: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1774: my ($udom,$uname)=split(/\//,$author);
1775: my $home=homeserver($uname,$udom);
1776: if ($home eq 'no_host') {
1777: return 'not_found';
1778: }
1779: my $answer=reply("sub:$fname",$home);
1780: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1781: $answer.=' by '.$home;
1782: }
1783: return $answer;
1784: }
1785:
1786: # -------------------------------------------------------------- Replicate file
1787:
1788: sub repcopy {
1789: my $filename=shift;
1790: $filename=~s/\/+/\//g;
1791: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1792: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1793: if ($filename=~m|^/home/httpd/html/userfiles/| or
1794: $filename=~m -^/*(uploaded|editupload)/-) {
1795: return &repcopy_userfile($filename);
1796: }
1797: $filename=~s/[\n\r]//g;
1798: my $transname="$filename.in.transfer";
1799: # FIXME: this should flock
1800: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1801: my $remoteurl=subscribe($filename);
1802: if ($remoteurl =~ /^con_lost by/) {
1803: &logthis("Subscribe returned $remoteurl: $filename");
1804: return 'unavailable';
1805: } elsif ($remoteurl eq 'not_found') {
1806: #&logthis("Subscribe returned not_found: $filename");
1807: return 'not_found';
1808: } elsif ($remoteurl =~ /^rejected by/) {
1809: &logthis("Subscribe returned $remoteurl: $filename");
1810: return 'forbidden';
1811: } elsif ($remoteurl eq 'directory') {
1812: return 'ok';
1813: } else {
1814: my $author=$filename;
1815: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1816: my ($udom,$uname)=split(/\//,$author);
1817: my $home=homeserver($uname,$udom);
1818: unless ($home eq $perlvar{'lonHostID'}) {
1819: my @parts=split(/\//,$filename);
1820: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1821: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1822: &logthis("Malconfiguration for replication: $filename");
1823: return 'bad_request';
1824: }
1825: my $count;
1826: for ($count=5;$count<$#parts;$count++) {
1827: $path.="/$parts[$count]";
1828: if ((-e $path)!=1) {
1829: mkdir($path,0777);
1830: }
1831: }
1832: my $ua=new LWP::UserAgent;
1833: my $request=new HTTP::Request('GET',"$remoteurl");
1834: my $response=$ua->request($request,$transname);
1835: if ($response->is_error()) {
1836: unlink($transname);
1837: my $message=$response->status_line;
1838: &logthis("<font color=\"blue\">WARNING:"
1839: ." LWP get: $message: $filename</font>");
1840: return 'unavailable';
1841: } else {
1842: if ($remoteurl!~/\.meta$/) {
1843: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1844: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1845: if ($mresponse->is_error()) {
1846: unlink($filename.'.meta');
1847: &logthis(
1848: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1849: }
1850: }
1851: rename($transname,$filename);
1852: return 'ok';
1853: }
1854: }
1855: }
1856: }
1857:
1858: # ------------------------------------------------ Get server side include body
1859: sub ssi_body {
1860: my ($filelink,%form)=@_;
1861: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1862: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1863: }
1864: my $output='';
1865: my $response;
1866: if ($filelink=~/^https?\:/) {
1867: ($output,$response)=&externalssi($filelink);
1868: } else {
1869: ($output,$response)=&ssi($filelink,%form);
1870: }
1871: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1872: $output=~s/^.*?\<body[^\>]*\>//si;
1873: $output=~s/\<\/body\s*\>.*?$//si;
1874: if (wantarray) {
1875: return ($output, $response);
1876: } else {
1877: return $output;
1878: }
1879: }
1880:
1881: # --------------------------------------------------------- Server Side Include
1882:
1883: sub absolute_url {
1884: my ($host_name) = @_;
1885: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1886: if ($host_name eq '') {
1887: $host_name = $ENV{'SERVER_NAME'};
1888: }
1889: return $protocol.$host_name;
1890: }
1891:
1892: #
1893: # Server side include.
1894: # Parameters:
1895: # fn Possibly encrypted resource name/id.
1896: # form Hash that describes how the rendering should be done
1897: # and other things.
1898: # Returns:
1899: # Scalar context: The content of the response.
1900: # Array context: 2 element list of the content and the full response object.
1901: #
1902: sub ssi {
1903:
1904: my ($fn,%form)=@_;
1905: my $ua=new LWP::UserAgent;
1906: my $request;
1907:
1908: $form{'no_update_last_known'}=1;
1909: &Apache::lonenc::check_encrypt(\$fn);
1910: if (%form) {
1911: $request=new HTTP::Request('POST',&absolute_url().$fn);
1912: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
1913: } else {
1914: $request=new HTTP::Request('GET',&absolute_url().$fn);
1915: }
1916:
1917: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1918: my $response=$ua->request($request);
1919:
1920: if (wantarray) {
1921: return ($response->content, $response);
1922: } else {
1923: return $response->content;
1924: }
1925: }
1926:
1927: sub externalssi {
1928: my ($url)=@_;
1929: my $ua=new LWP::UserAgent;
1930: my $request=new HTTP::Request('GET',$url);
1931: my $response=$ua->request($request);
1932: if (wantarray) {
1933: return ($response->content, $response);
1934: } else {
1935: return $response->content;
1936: }
1937: }
1938:
1939: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1940:
1941: sub allowuploaded {
1942: my ($srcurl,$url)=@_;
1943: $url=&clutter(&declutter($url));
1944: my $dir=$url;
1945: $dir=~s/\/[^\/]+$//;
1946: my %httpref=();
1947: my $httpurl=&hreflocation('',$url);
1948: $httpref{'httpref.'.$httpurl}=$srcurl;
1949: &Apache::lonnet::appenv(\%httpref);
1950: }
1951:
1952: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1953: # input: action, courseID, current domain, intended
1954: # path to file, source of file, instruction to parse file for objects,
1955: # ref to hash for embedded objects,
1956: # ref to hash for codebase of java objects.
1957: #
1958: # output: url to file (if action was uploaddoc),
1959: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1960: #
1961: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1962: # course.
1963: #
1964: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1965: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1966: # course's home server.
1967: #
1968: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1969: # be copied from $source (current location) to
1970: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1971: # and will then be copied to
1972: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1973: # course's home server.
1974: #
1975: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1976: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1977: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1978: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1979: # in course's home server.
1980: #
1981:
1982: sub process_coursefile {
1983: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1984: my $fetchresult;
1985: my $home=&homeserver($docuname,$docudom);
1986: if ($action eq 'propagate') {
1987: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1988: $home);
1989: } else {
1990: my $fpath = '';
1991: my $fname = $file;
1992: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1993: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1994: my $filepath = &build_filepath($fpath);
1995: if ($action eq 'copy') {
1996: if ($source eq '') {
1997: $fetchresult = 'no source file';
1998: return $fetchresult;
1999: } else {
2000: my $destination = $filepath.'/'.$fname;
2001: rename($source,$destination);
2002: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2003: $home);
2004: }
2005: } elsif ($action eq 'uploaddoc') {
2006: open(my $fh,'>'.$filepath.'/'.$fname);
2007: print $fh $env{'form.'.$source};
2008: close($fh);
2009: if ($parser eq 'parse') {
2010: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2011: unless ($parse_result eq 'ok') {
2012: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2013: }
2014: }
2015: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2016: $home);
2017: if ($fetchresult eq 'ok') {
2018: return '/uploaded/'.$fpath.'/'.$fname;
2019: } else {
2020: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2021: ' to host '.$home.': '.$fetchresult);
2022: return '/adm/notfound.html';
2023: }
2024: }
2025: }
2026: unless ( $fetchresult eq 'ok') {
2027: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2028: ' to host '.$home.': '.$fetchresult);
2029: }
2030: return $fetchresult;
2031: }
2032:
2033: sub build_filepath {
2034: my ($fpath) = @_;
2035: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2036: unless ($fpath eq '') {
2037: my @parts=split('/',$fpath);
2038: foreach my $part (@parts) {
2039: $filepath.= '/'.$part;
2040: if ((-e $filepath)!=1) {
2041: mkdir($filepath,0777);
2042: }
2043: }
2044: }
2045: return $filepath;
2046: }
2047:
2048: sub store_edited_file {
2049: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2050: my $file = $primary_url;
2051: $file =~ s#^/uploaded/$docudom/$docuname/##;
2052: my $fpath = '';
2053: my $fname = $file;
2054: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2055: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2056: my $filepath = &build_filepath($fpath);
2057: open(my $fh,'>'.$filepath.'/'.$fname);
2058: print $fh $content;
2059: close($fh);
2060: my $home=&homeserver($docuname,$docudom);
2061: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2062: $home);
2063: if ($$fetchresult eq 'ok') {
2064: return '/uploaded/'.$fpath.'/'.$fname;
2065: } else {
2066: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2067: ' to host '.$home.': '.$$fetchresult);
2068: return '/adm/notfound.html';
2069: }
2070: }
2071:
2072: sub clean_filename {
2073: my ($fname,$args)=@_;
2074: # Replace Windows backslashes by forward slashes
2075: $fname=~s/\\/\//g;
2076: if (!$args->{'keep_path'}) {
2077: # Get rid of everything but the actual filename
2078: $fname=~s/^.*\/([^\/]+)$/$1/;
2079: }
2080: # Replace spaces by underscores
2081: $fname=~s/\s+/\_/g;
2082: # Replace all other weird characters by nothing
2083: $fname=~s{[^/\w\.\-]}{}g;
2084: # Replace all .\d. sequences with _\d. so they no longer look like version
2085: # numbers
2086: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2087: return $fname;
2088: }
2089: #This Function check if a Image max 400px width and height 500px. If not then scale the image down
2090: sub resizeImage {
2091: my($img_url) = @_;
2092: my $ima = Image::Magick->new;
2093: $ima->Read($img_url);
2094: if($ima->Get('width') > 400)
2095: {
2096: my $factor = $ima->Get('width')/400;
2097: $ima->Scale( width=>400, height=>$ima->Get('height')/$factor );
2098: }
2099: if($ima->Get('height') > 500)
2100: {
2101: my $factor = $ima->Get('height')/500;
2102: $ima->Scale( width=>$ima->Get('width')/$factor, height=>500);
2103: }
2104:
2105: $ima->Write($img_url);
2106: }
2107:
2108: #Wrapper function for userphotoupload
2109: sub userphotoupload
2110: {
2111: my($formname,$subdir) = @_;
2112: $upload_photo_form = 1;
2113: return &userfileupload($formname,undef,$subdir);
2114: }
2115:
2116: # --------------- Take an uploaded file and put it into the userfiles directory
2117: # input: $formname - the contents of the file are in $env{"form.$formname"}
2118: # the desired filenam is in $env{"form.$formname.filename"}
2119: # $coursedoc - if true up to the current course
2120: # if false
2121: # $subdir - directory in userfile to store the file into
2122: # $parser - instruction to parse file for objects ($parser = parse)
2123: # $allfiles - reference to hash for embedded objects
2124: # $codebase - reference to hash for codebase of java objects
2125: # $desuname - username for permanent storage of uploaded file
2126: # $dsetudom - domain for permanaent storage of uploaded file
2127: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2128: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2129: #
2130: # output: url of file in userspace, or error: <message>
2131: # or /adm/notfound.html if failure to upload occurse
2132:
2133:
2134: sub userfileupload {
2135: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2136: $destudom,$thumbwidth,$thumbheight)=@_;
2137: if (!defined($subdir)) { $subdir='unknown'; }
2138: my $fname=$env{'form.'.$formname.'.filename'};
2139: $fname=&clean_filename($fname);
2140: # See if there is anything left
2141: unless ($fname) { return 'error: no uploaded file'; }
2142: chop($env{'form.'.$formname});
2143: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2144: my $now = time;
2145: my $filepath = 'tmp/helprequests/'.$now;
2146: my @parts=split(/\//,$filepath);
2147: my $fullpath = $perlvar{'lonDaemons'};
2148: for (my $i=0;$i<@parts;$i++) {
2149: $fullpath .= '/'.$parts[$i];
2150: if ((-e $fullpath)!=1) {
2151: mkdir($fullpath,0777);
2152: }
2153: }
2154: open(my $fh,'>'.$fullpath.'/'.$fname);
2155: print $fh $env{'form.'.$formname};
2156: close($fh);
2157: return $fullpath.'/'.$fname;
2158: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2159: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2160: '_'.$env{'user.domain'}.'/pending';
2161: my @parts=split(/\//,$filepath);
2162: my $fullpath = $perlvar{'lonDaemons'};
2163: for (my $i=0;$i<@parts;$i++) {
2164: $fullpath .= '/'.$parts[$i];
2165: if ((-e $fullpath)!=1) {
2166: mkdir($fullpath,0777);
2167: }
2168: }
2169: open(my $fh,'>'.$fullpath.'/'.$fname);
2170: print $fh $env{'form.'.$formname};
2171: close($fh);
2172: return $fullpath.'/'.$fname;
2173: }
2174: if ($subdir eq 'scantron') {
2175: $fname = 'scantron_orig_'.$fname;
2176: } else {
2177: # Create the directory if not present
2178: $fname="$subdir/$fname";
2179: }
2180: if ($coursedoc) {
2181: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2182: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2183: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2184: return &finishuserfileupload($docuname,$docudom,
2185: $formname,$fname,$parser,$allfiles,
2186: $codebase,$thumbwidth,$thumbheight);
2187: } else {
2188: $fname=$env{'form.folder'}.'/'.$fname;
2189: return &process_coursefile('uploaddoc',$docuname,$docudom,
2190: $fname,$formname,$parser,
2191: $allfiles,$codebase);
2192: }
2193: } elsif (defined($destuname)) {
2194: my $docuname=$destuname;
2195: my $docudom=$destudom;
2196: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2197: $parser,$allfiles,$codebase,
2198: $thumbwidth,$thumbheight);
2199:
2200: } else {
2201: my $docuname=$env{'user.name'};
2202: my $docudom=$env{'user.domain'};
2203: if (exists($env{'form.group'})) {
2204: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2205: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2206: }
2207: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2208: $parser,$allfiles,$codebase,
2209: $thumbwidth,$thumbheight);
2210: }
2211: }
2212:
2213: sub finishuserfileupload {
2214: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2215: $thumbwidth,$thumbheight) = @_;
2216: my $path=$docudom.'/'.$docuname.'/';
2217: my $filepath=$perlvar{'lonDocRoot'};
2218:
2219: my ($fnamepath,$file,$fetchthumb);
2220: $file=$fname;
2221: if ($fname=~m|/|) {
2222: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2223: $path.=$fnamepath.'/';
2224: }
2225: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2226: my $count;
2227: for ($count=4;$count<=$#parts;$count++) {
2228: $filepath.="/$parts[$count]";
2229: if ((-e $filepath)!=1) {
2230: mkdir($filepath,0777);
2231: }
2232: }
2233:
2234: # Save the file
2235: {
2236: if (!open(FH,'>'.$filepath.'/'.$file)) {
2237: &logthis('Failed to create '.$filepath.'/'.$file);
2238: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2239: return '/adm/notfound.html';
2240: }
2241: if (!print FH ($env{'form.'.$formname})) {
2242: &logthis('Failed to write to '.$filepath.'/'.$file);
2243: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2244: return '/adm/notfound.html';
2245: }
2246: close(FH);
2247: if($upload_photo_form==1)
2248: {
2249: resizeImage($filepath.'/'.$file);
2250: $upload_photo_form = 0;
2251: }
2252: }
2253: if ($parser eq 'parse') {
2254: my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
2255: $codebase);
2256: unless ($parse_result eq 'ok') {
2257: &logthis('Failed to parse '.$filepath.$file.
2258: ' for embedded media: '.$parse_result);
2259: }
2260: }
2261: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2262: my $input = $filepath.'/'.$file;
2263: my $output = $filepath.'/'.'tn-'.$file;
2264: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2265: system("convert -sample $thumbsize $input $output");
2266: if (-e $filepath.'/'.'tn-'.$file) {
2267: $fetchthumb = 1;
2268: }
2269: }
2270:
2271: # Notify homeserver to grep it
2272: #
2273: my $docuhome=&homeserver($docuname,$docudom);
2274: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2275: if ($fetchresult eq 'ok') {
2276: if ($fetchthumb) {
2277: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2278: if ($thumbresult ne 'ok') {
2279: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2280: $docuhome.': '.$thumbresult);
2281: }
2282: }
2283: #
2284: # Return the URL to it
2285: return '/uploaded/'.$path.$file;
2286: } else {
2287: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2288: ': '.$fetchresult);
2289: return '/adm/notfound.html';
2290: }
2291: }
2292:
2293: sub extract_embedded_items {
2294: my ($fullpath,$allfiles,$codebase,$content) = @_;
2295: my @state = ();
2296: my %javafiles = (
2297: codebase => '',
2298: code => '',
2299: archive => ''
2300: );
2301: my %mediafiles = (
2302: src => '',
2303: movie => '',
2304: );
2305: my $p;
2306: if ($content) {
2307: $p = HTML::LCParser->new($content);
2308: } else {
2309: $p = HTML::LCParser->new($fullpath);
2310: }
2311: while (my $t=$p->get_token()) {
2312: if ($t->[0] eq 'S') {
2313: my ($tagname, $attr) = ($t->[1],$t->[2]);
2314: push(@state, $tagname);
2315: if (lc($tagname) eq 'allow') {
2316: &add_filetype($allfiles,$attr->{'src'},'src');
2317: }
2318: if (lc($tagname) eq 'img') {
2319: &add_filetype($allfiles,$attr->{'src'},'src');
2320: }
2321: if (lc($tagname) eq 'a') {
2322: &add_filetype($allfiles,$attr->{'href'},'href');
2323: }
2324: if (lc($tagname) eq 'script') {
2325: if ($attr->{'archive'} =~ /\.jar$/i) {
2326: &add_filetype($allfiles,$attr->{'archive'},'archive');
2327: } else {
2328: &add_filetype($allfiles,$attr->{'src'},'src');
2329: }
2330: }
2331: if (lc($tagname) eq 'link') {
2332: if (lc($attr->{'rel'}) eq 'stylesheet') {
2333: &add_filetype($allfiles,$attr->{'href'},'href');
2334: }
2335: }
2336: if (lc($tagname) eq 'object' ||
2337: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2338: foreach my $item (keys(%javafiles)) {
2339: $javafiles{$item} = '';
2340: }
2341: }
2342: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2343: my $name = lc($attr->{'name'});
2344: foreach my $item (keys(%javafiles)) {
2345: if ($name eq $item) {
2346: $javafiles{$item} = $attr->{'value'};
2347: last;
2348: }
2349: }
2350: foreach my $item (keys(%mediafiles)) {
2351: if ($name eq $item) {
2352: &add_filetype($allfiles, $attr->{'value'}, 'value');
2353: last;
2354: }
2355: }
2356: }
2357: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2358: foreach my $item (keys(%javafiles)) {
2359: if ($attr->{$item}) {
2360: $javafiles{$item} = $attr->{$item};
2361: last;
2362: }
2363: }
2364: foreach my $item (keys(%mediafiles)) {
2365: if ($attr->{$item}) {
2366: &add_filetype($allfiles,$attr->{$item},$item);
2367: last;
2368: }
2369: }
2370: }
2371: } elsif ($t->[0] eq 'E') {
2372: my ($tagname) = ($t->[1]);
2373: if ($javafiles{'codebase'} ne '') {
2374: $javafiles{'codebase'} .= '/';
2375: }
2376: if (lc($tagname) eq 'applet' ||
2377: lc($tagname) eq 'object' ||
2378: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2379: ) {
2380: foreach my $item (keys(%javafiles)) {
2381: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2382: my $file=$javafiles{'codebase'}.$javafiles{$item};
2383: &add_filetype($allfiles,$file,$item);
2384: }
2385: }
2386: }
2387: pop @state;
2388: }
2389: }
2390: return 'ok';
2391: }
2392:
2393: sub add_filetype {
2394: my ($allfiles,$file,$type)=@_;
2395: if (exists($allfiles->{$file})) {
2396: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2397: push(@{$allfiles->{$file}}, &escape($type));
2398: }
2399: } else {
2400: @{$allfiles->{$file}} = (&escape($type));
2401: }
2402: }
2403:
2404: sub removeuploadedurl {
2405: my ($url)=@_;
2406: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2407: return &removeuserfile($uname,$udom,$fname);
2408: }
2409:
2410: sub removeuserfile {
2411: my ($docuname,$docudom,$fname)=@_;
2412: my $home=&homeserver($docuname,$docudom);
2413: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2414: if ($result eq 'ok') {
2415: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2416: my $metafile = $fname.'.meta';
2417: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2418: my $url = "/uploaded/$docudom/$docuname/$fname";
2419: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2420: my $sqlresult =
2421: &update_portfolio_table($docuname,$docudom,$file,
2422: 'portfolio_metadata',$group,
2423: 'delete');
2424: }
2425: }
2426: return $result;
2427: }
2428:
2429: sub mkdiruserfile {
2430: my ($docuname,$docudom,$dir)=@_;
2431: my $home=&homeserver($docuname,$docudom);
2432: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2433: }
2434:
2435: sub renameuserfile {
2436: my ($docuname,$docudom,$old,$new)=@_;
2437: my $home=&homeserver($docuname,$docudom);
2438: my $result = &reply("renameuserfile:$docudom:$docuname:".
2439: &escape("$old").':'.&escape("$new"),$home);
2440: if ($result eq 'ok') {
2441: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2442: my $oldmeta = $old.'.meta';
2443: my $newmeta = $new.'.meta';
2444: my $metaresult =
2445: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2446: my $url = "/uploaded/$docudom/$docuname/$old";
2447: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2448: my $sqlresult =
2449: &update_portfolio_table($docuname,$docudom,$file,
2450: 'portfolio_metadata',$group,
2451: 'delete');
2452: }
2453: }
2454: return $result;
2455: }
2456:
2457: # ------------------------------------------------------------------------- Log
2458:
2459: sub log {
2460: my ($dom,$nam,$hom,$what)=@_;
2461: return critical("log:$dom:$nam:$what",$hom);
2462: }
2463:
2464: # ------------------------------------------------------------------ Course Log
2465: #
2466: # This routine flushes several buffers of non-mission-critical nature
2467: #
2468:
2469: sub flushcourselogs {
2470: &logthis('Flushing log buffers');
2471: #
2472: # course logs
2473: # This is a log of all transactions in a course, which can be used
2474: # for data mining purposes
2475: #
2476: # It also collects the courseid database, which lists last transaction
2477: # times and course titles for all courseids
2478: #
2479: my %courseidbuffer=();
2480: foreach my $crsid (keys(%courselogs)) {
2481: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2482: &escape($courselogs{$crsid}),
2483: $coursehombuf{$crsid}) eq 'ok') {
2484: delete $courselogs{$crsid};
2485: } else {
2486: &logthis('Failed to flush log buffer for '.$crsid);
2487: if (length($courselogs{$crsid})>40000) {
2488: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2489: " exceeded maximum size, deleting.</font>");
2490: delete $courselogs{$crsid};
2491: }
2492: }
2493: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2494: 'description' => $coursedescrbuf{$crsid},
2495: 'inst_code' => $courseinstcodebuf{$crsid},
2496: 'type' => $coursetypebuf{$crsid},
2497: 'owner' => $courseownerbuf{$crsid},
2498: };
2499: }
2500: #
2501: # Write course id database (reverse lookup) to homeserver of courses
2502: # Is used in pickcourse
2503: #
2504: foreach my $crs_home (keys(%courseidbuffer)) {
2505: my $response = &courseidput(&host_domain($crs_home),
2506: $courseidbuffer{$crs_home},
2507: $crs_home,'timeonly');
2508: }
2509: #
2510: # File accesses
2511: # Writes to the dynamic metadata of resources to get hit counts, etc.
2512: #
2513: foreach my $entry (keys(%accesshash)) {
2514: if ($entry =~ /___count$/) {
2515: my ($dom,$name);
2516: ($dom,$name,undef)=
2517: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2518: if (! defined($dom) || $dom eq '' ||
2519: ! defined($name) || $name eq '') {
2520: my $cid = $env{'request.course.id'};
2521: $dom = $env{'request.'.$cid.'.domain'};
2522: $name = $env{'request.'.$cid.'.num'};
2523: }
2524: my $value = $accesshash{$entry};
2525: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2526: my %temphash=($url => $value);
2527: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2528: if ($result eq 'ok') {
2529: delete $accesshash{$entry};
2530: } elsif ($result eq 'unknown_cmd') {
2531: # Target server has old code running on it.
2532: my %temphash=($entry => $value);
2533: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2534: delete $accesshash{$entry};
2535: }
2536: }
2537: } else {
2538: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2539: my %temphash=($entry => $accesshash{$entry});
2540: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2541: delete $accesshash{$entry};
2542: }
2543: }
2544: }
2545: #
2546: # Roles
2547: # Reverse lookup of user roles for course faculty/staff and co-authorship
2548: #
2549: foreach my $entry (keys(%userrolehash)) {
2550: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2551: split(/\:/,$entry);
2552: if (&Apache::lonnet::put('nohist_userroles',
2553: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2554: $rudom,$runame) eq 'ok') {
2555: delete $userrolehash{$entry};
2556: }
2557: }
2558: #
2559: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2560: #
2561: my %domrolebuffer = ();
2562: foreach my $entry (keys(%domainrolehash)) {
2563: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2564: if ($domrolebuffer{$rudom}) {
2565: $domrolebuffer{$rudom}.='&'.&escape($entry).
2566: '='.&escape($domainrolehash{$entry});
2567: } else {
2568: $domrolebuffer{$rudom}.=&escape($entry).
2569: '='.&escape($domainrolehash{$entry});
2570: }
2571: delete $domainrolehash{$entry};
2572: }
2573: foreach my $dom (keys(%domrolebuffer)) {
2574: my %servers = &get_servers($dom,'library');
2575: foreach my $tryserver (keys(%servers)) {
2576: unless (&reply('domroleput:'.$dom.':'.
2577: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2578: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2579: }
2580: }
2581: }
2582: $dumpcount++;
2583: }
2584:
2585: sub courselog {
2586: my $what=shift;
2587: $what=time.':'.$what;
2588: unless ($env{'request.course.id'}) { return ''; }
2589: $coursedombuf{$env{'request.course.id'}}=
2590: $env{'course.'.$env{'request.course.id'}.'.domain'};
2591: $coursenumbuf{$env{'request.course.id'}}=
2592: $env{'course.'.$env{'request.course.id'}.'.num'};
2593: $coursehombuf{$env{'request.course.id'}}=
2594: $env{'course.'.$env{'request.course.id'}.'.home'};
2595: $coursedescrbuf{$env{'request.course.id'}}=
2596: $env{'course.'.$env{'request.course.id'}.'.description'};
2597: $courseinstcodebuf{$env{'request.course.id'}}=
2598: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2599: $courseownerbuf{$env{'request.course.id'}}=
2600: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2601: $coursetypebuf{$env{'request.course.id'}}=
2602: $env{'course.'.$env{'request.course.id'}.'.type'};
2603: if (defined $courselogs{$env{'request.course.id'}}) {
2604: $courselogs{$env{'request.course.id'}}.='&'.$what;
2605: } else {
2606: $courselogs{$env{'request.course.id'}}.=$what;
2607: }
2608: if (length($courselogs{$env{'request.course.id'}})>4048) {
2609: &flushcourselogs();
2610: }
2611: }
2612:
2613: sub courseacclog {
2614: my $fnsymb=shift;
2615: unless ($env{'request.course.id'}) { return ''; }
2616: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2617: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2618: $what.=':POST';
2619: # FIXME: Probably ought to escape things....
2620: foreach my $key (keys(%env)) {
2621: if ($key=~/^form\.(.*)/) {
2622: my $formitem = $1;
2623: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2624: $what.=':'.$formitem.'='.$env{$key};
2625: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2626: $what.=':'.$formitem.'='.$env{$key};
2627: }
2628: }
2629: }
2630: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2631: # FIXME: We should not be depending on a form parameter that someone
2632: # editing lonsearchcat.pm might change in the future.
2633: if ($env{'form.phase'} eq 'course_search') {
2634: $what.= ':POST';
2635: # FIXME: Probably ought to escape things....
2636: foreach my $element ('courseexp','crsfulltext','crsrelated',
2637: 'crsdiscuss') {
2638: $what.=':'.$element.'='.$env{'form.'.$element};
2639: }
2640: }
2641: }
2642: &courselog($what);
2643: }
2644:
2645: sub countacc {
2646: my $url=&declutter(shift);
2647: return if (! defined($url) || $url eq '');
2648: unless ($env{'request.course.id'}) { return ''; }
2649: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2650: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2651: $accesshash{$key}++;
2652: }
2653:
2654: sub linklog {
2655: my ($from,$to)=@_;
2656: $from=&declutter($from);
2657: $to=&declutter($to);
2658: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2659: $accesshash{$to.'___'.$from.'___goto'}=1;
2660: }
2661:
2662: sub userrolelog {
2663: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2664: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2665: ($trole=~/^in/) || ($trole=~/^cc/) ||
2666: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2667: ($trole=~/^ta/)) {
2668: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2669: $userrolehash
2670: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2671: =$tend.':'.$tstart;
2672: }
2673: if (($env{'request.role'} =~ /dc\./) &&
2674: (($trole=~/^au/) || ($trole=~/^in/) ||
2675: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2676: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2677: $userrolehash
2678: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2679: =$tend.':'.$tstart;
2680: }
2681: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2682: ($trole=~/^li/) || ($trole=~/^li/) ||
2683: ($trole=~/^au/) || ($trole=~/^dg/) ||
2684: ($trole=~/^sc/)) {
2685: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2686: $domainrolehash
2687: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2688: = $tend.':'.$tstart;
2689: }
2690: }
2691:
2692: sub courserolelog {
2693: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2694: if (($trole eq 'cc') || ($trole eq 'in') ||
2695: ($trole eq 'ep') || ($trole eq 'ad') ||
2696: ($trole eq 'ta') || ($trole eq 'st') ||
2697: ($trole=~/^cr/) || ($trole eq 'gr')) {
2698: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2699: my $cdom = $1;
2700: my $cnum = $2;
2701: my $sec = $3;
2702: my $namespace = 'rolelog';
2703: my %storehash = (
2704: role => $trole,
2705: start => $tstart,
2706: end => $tend,
2707: selfenroll => $selfenroll,
2708: context => $context,
2709: );
2710: if ($trole eq 'gr') {
2711: $namespace = 'groupslog';
2712: $storehash{'group'} = $sec;
2713: } else {
2714: $storehash{'section'} = $sec;
2715: }
2716: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2717: if (($trole ne 'st') || ($sec ne '')) {
2718: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2719: }
2720: }
2721: }
2722: return;
2723: }
2724:
2725: sub get_course_adv_roles {
2726: my ($cid,$codes) = @_;
2727: $cid=$env{'request.course.id'} unless (defined($cid));
2728: my %coursehash=&coursedescription($cid);
2729: my $crstype = &Apache::loncommon::course_type($cid);
2730: my %nothide=();
2731: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2732: if ($user !~ /:/) {
2733: $nothide{join(':',split(/[\@]/,$user))}=1;
2734: } else {
2735: $nothide{$user}=1;
2736: }
2737: }
2738: my %returnhash=();
2739: my %dumphash=
2740: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2741: my $now=time;
2742: my %privileged;
2743: foreach my $entry (keys(%dumphash)) {
2744: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2745: if (($tstart) && ($tstart<0)) { next; }
2746: if (($tend) && ($tend<$now)) { next; }
2747: if (($tstart) && ($now<$tstart)) { next; }
2748: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2749: if ($username eq '' || $domain eq '') { next; }
2750: unless (ref($privileged{$domain}) eq 'HASH') {
2751: my %dompersonnel =
2752: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2753: $privileged{$domain} = {};
2754: foreach my $server (keys(%dompersonnel)) {
2755: if (ref($dompersonnel{$server}) eq 'HASH') {
2756: foreach my $user (keys(%{$dompersonnel{$server}})) {
2757: my ($trole,$uname,$udom) = split(/:/,$user);
2758: $privileged{$udom}{$uname} = 1;
2759: }
2760: }
2761: }
2762: }
2763: if ((exists($privileged{$domain}{$username})) &&
2764: (!$nothide{$username.':'.$domain})) { next; }
2765: if ($role eq 'cr') { next; }
2766: if ($codes) {
2767: if ($section) { $role .= ':'.$section; }
2768: if ($returnhash{$role}) {
2769: $returnhash{$role}.=','.$username.':'.$domain;
2770: } else {
2771: $returnhash{$role}=$username.':'.$domain;
2772: }
2773: } else {
2774: my $key=&plaintext($role,$crstype);
2775: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
2776: if ($returnhash{$key}) {
2777: $returnhash{$key}.=','.$username.':'.$domain;
2778: } else {
2779: $returnhash{$key}=$username.':'.$domain;
2780: }
2781: }
2782: }
2783: return %returnhash;
2784: }
2785:
2786: sub get_my_roles {
2787: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2788: unless (defined($uname)) { $uname=$env{'user.name'}; }
2789: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2790: my (%dumphash,%nothide);
2791: if ($context eq 'userroles') {
2792: %dumphash = &dump('roles',$udom,$uname);
2793: } else {
2794: %dumphash=
2795: &dump('nohist_userroles',$udom,$uname);
2796: if ($hidepriv) {
2797: my %coursehash=&coursedescription($udom.'_'.$uname);
2798: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2799: if ($user !~ /:/) {
2800: $nothide{join(':',split(/[\@]/,$user))} = 1;
2801: } else {
2802: $nothide{$user} = 1;
2803: }
2804: }
2805: }
2806: }
2807: my %returnhash=();
2808: my $now=time;
2809: my %privileged;
2810: foreach my $entry (keys(%dumphash)) {
2811: my ($role,$tend,$tstart);
2812: if ($context eq 'userroles') {
2813: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2814: } else {
2815: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2816: }
2817: if (($tstart) && ($tstart<0)) { next; }
2818: my $status = 'active';
2819: if (($tend) && ($tend<=$now)) {
2820: $status = 'previous';
2821: }
2822: if (($tstart) && ($now<$tstart)) {
2823: $status = 'future';
2824: }
2825: if (ref($types) eq 'ARRAY') {
2826: if (!grep(/^\Q$status\E$/,@{$types})) {
2827: next;
2828: }
2829: } else {
2830: if ($status ne 'active') {
2831: next;
2832: }
2833: }
2834: my ($rolecode,$username,$domain,$section,$area);
2835: if ($context eq 'userroles') {
2836: ($area,$rolecode) = split(/_/,$entry);
2837: (undef,$domain,$username,$section) = split(/\//,$area);
2838: } else {
2839: ($role,$username,$domain,$section) = split(/\:/,$entry);
2840: }
2841: if (ref($roledoms) eq 'ARRAY') {
2842: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2843: next;
2844: }
2845: }
2846: if (ref($roles) eq 'ARRAY') {
2847: if (!grep(/^\Q$role\E$/,@{$roles})) {
2848: if ($role =~ /^cr\//) {
2849: if (!grep(/^cr$/,@{$roles})) {
2850: next;
2851: }
2852: } else {
2853: next;
2854: }
2855: }
2856: }
2857: if ($hidepriv) {
2858: if ($context eq 'userroles') {
2859: if ((&privileged($username,$domain)) &&
2860: (!$nothide{$username.':'.$domain})) {
2861: next;
2862: }
2863: } else {
2864: unless (ref($privileged{$domain}) eq 'HASH') {
2865: my %dompersonnel =
2866: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2867: $privileged{$domain} = {};
2868: if (keys(%dompersonnel)) {
2869: foreach my $server (keys(%dompersonnel)) {
2870: if (ref($dompersonnel{$server}) eq 'HASH') {
2871: foreach my $user (keys(%{$dompersonnel{$server}})) {
2872: my ($trole,$uname,$udom) = split(/:/,$user);
2873: $privileged{$udom}{$uname} = $trole;
2874: }
2875: }
2876: }
2877: }
2878: }
2879: if (exists($privileged{$domain}{$username})) {
2880: if (!$nothide{$username.':'.$domain}) {
2881: next;
2882: }
2883: }
2884: }
2885: }
2886: if ($withsec) {
2887: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2888: $tstart.':'.$tend;
2889: } else {
2890: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2891: }
2892: }
2893: return %returnhash;
2894: }
2895:
2896: # ----------------------------------------------------- Frontpage Announcements
2897: #
2898: #
2899:
2900: sub postannounce {
2901: my ($server,$text)=@_;
2902: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2903: unless ($text=~/\w/) { $text=''; }
2904: return &reply('setannounce:'.&escape($text),$server);
2905: }
2906:
2907: sub getannounce {
2908:
2909: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2910: my $announcement='';
2911: while (my $line = <$fh>) { $announcement .= $line; }
2912: close($fh);
2913: if ($announcement=~/\w/) {
2914: return
2915: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2916: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2917: } else {
2918: return '';
2919: }
2920: } else {
2921: return '';
2922: }
2923: }
2924:
2925: # ---------------------------------------------------------- Course ID routines
2926: # Deal with domain's nohist_courseid.db files
2927: #
2928:
2929: sub courseidput {
2930: my ($domain,$storehash,$coursehome,$caller) = @_;
2931: my $outcome;
2932: if ($caller eq 'timeonly') {
2933: my $cids = '';
2934: foreach my $item (keys(%$storehash)) {
2935: $cids.=&escape($item).'&';
2936: }
2937: $cids=~s/\&$//;
2938: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2939: $coursehome);
2940: } else {
2941: my $items = '';
2942: foreach my $item (keys(%$storehash)) {
2943: $items.= &escape($item).'='.
2944: &freeze_escape($$storehash{$item}).'&';
2945: }
2946: $items=~s/\&$//;
2947: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2948: $coursehome);
2949: }
2950: if ($outcome eq 'unknown_cmd') {
2951: my $what;
2952: foreach my $cid (keys(%$storehash)) {
2953: $what .= &escape($cid).'=';
2954: foreach my $item ('description','inst_code','owner','type') {
2955: $what .= &escape($storehash->{$cid}{$item}).':';
2956: }
2957: $what =~ s/\:$/&/;
2958: }
2959: $what =~ s/\&$//;
2960: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2961: } else {
2962: return $outcome;
2963: }
2964: }
2965:
2966: sub courseiddump {
2967: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2968: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2969: $selfenrollonly,$catfilter,$showhidden,$caller)=@_;
2970: my $as_hash = 1;
2971: my %returnhash;
2972: if (!$domfilter) { $domfilter=''; }
2973: my %libserv = &all_library();
2974: foreach my $tryserver (keys(%libserv)) {
2975: if ( ( $hostidflag == 1
2976: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2977: || (!defined($hostidflag)) ) {
2978:
2979: if (($domfilter eq '') ||
2980: (&host_domain($tryserver) eq $domfilter)) {
2981: my $rep =
2982: &reply('courseiddump:'.&host_domain($tryserver).':'.
2983: $sincefilter.':'.&escape($descfilter).':'.
2984: &escape($instcodefilter).':'.&escape($ownerfilter).
2985: ':'.&escape($coursefilter).':'.&escape($typefilter).
2986: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2987: &escape($selfenrollonly).':'.&escape($catfilter).':'.
2988: $showhidden.':'.$caller,$tryserver);
2989: my @pairs=split(/\&/,$rep);
2990: foreach my $item (@pairs) {
2991: my ($key,$value)=split(/\=/,$item,2);
2992: $key = &unescape($key);
2993: next if ($key =~ /^error: 2 /);
2994: my $result = &thaw_unescape($value);
2995: if (ref($result) eq 'HASH') {
2996: $returnhash{$key}=$result;
2997: } else {
2998: my @responses = split(/:/,$value);
2999: my @items = ('description','inst_code','owner','type');
3000: for (my $i=0; $i<@responses; $i++) {
3001: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3002: }
3003: }
3004: }
3005: }
3006: }
3007: }
3008: return %returnhash;
3009: }
3010:
3011: # ---------------------------------------------------------- DC e-mail
3012:
3013: sub dcmailput {
3014: my ($domain,$msgid,$message,$server)=@_;
3015: my $status = &Apache::lonnet::critical(
3016: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3017: &escape($message),$server);
3018: return $status;
3019: }
3020:
3021: sub dcmaildump {
3022: my ($dom,$startdate,$enddate,$senders) = @_;
3023: my %returnhash=();
3024:
3025: if (defined(&domain($dom,'primary'))) {
3026: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3027: &escape($enddate).':';
3028: my @esc_senders=map { &escape($_)} @$senders;
3029: $cmd.=&escape(join('&',@esc_senders));
3030: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3031: my ($key,$value) = split(/\=/,$line,2);
3032: if (($key) && ($value)) {
3033: $returnhash{&unescape($key)} = &unescape($value);
3034: }
3035: }
3036: }
3037: return %returnhash;
3038: }
3039: # ---------------------------------------------------------- Domain roles
3040:
3041: sub get_domain_roles {
3042: my ($dom,$roles,$startdate,$enddate)=@_;
3043: if (undef($startdate) || $startdate eq '') {
3044: $startdate = '.';
3045: }
3046: if (undef($enddate) || $enddate eq '') {
3047: $enddate = '.';
3048: }
3049: my $rolelist;
3050: if (ref($roles) eq 'ARRAY') {
3051: $rolelist = join(':',@{$roles});
3052: }
3053: my %personnel = ();
3054:
3055: my %servers = &get_servers($dom,'library');
3056: foreach my $tryserver (keys(%servers)) {
3057: %{$personnel{$tryserver}}=();
3058: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3059: &escape($startdate).':'.
3060: &escape($enddate).':'.
3061: &escape($rolelist), $tryserver))) {
3062: my ($key,$value) = split(/\=/,$line,2);
3063: if (($key) && ($value)) {
3064: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3065: }
3066: }
3067: }
3068: return %personnel;
3069: }
3070:
3071: # ----------------------------------------------------------- Check out an item
3072:
3073: sub get_first_access {
3074: my ($type,$argsymb)=@_;
3075: my ($symb,$courseid,$udom,$uname)=&whichuser();
3076: if ($argsymb) { $symb=$argsymb; }
3077: my ($map,$id,$res)=&decode_symb($symb);
3078: if ($type eq 'course') {
3079: $res='course';
3080: } elsif ($type eq 'map') {
3081: $res=&symbread($map);
3082: } else {
3083: $res=$symb;
3084: }
3085: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3086: return $times{"$courseid\0$res"};
3087: }
3088:
3089: sub set_first_access {
3090: my ($type)=@_;
3091: my ($symb,$courseid,$udom,$uname)=&whichuser();
3092: my ($map,$id,$res)=&decode_symb($symb);
3093: if ($type eq 'course') {
3094: $res='course';
3095: } elsif ($type eq 'map') {
3096: $res=&symbread($map);
3097: } else {
3098: $res=$symb;
3099: }
3100: my $firstaccess=&get_first_access($type,$symb);
3101: if (!$firstaccess) {
3102: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3103: }
3104: return 'already_set';
3105: }
3106:
3107: sub checkout {
3108: my ($symb,$tuname,$tudom,$tcrsid)=@_;
3109: my $now=time;
3110: my $lonhost=$perlvar{'lonHostID'};
3111: my $infostr=&escape(
3112: 'CHECKOUTTOKEN&'.
3113: $tuname.'&'.
3114: $tudom.'&'.
3115: $tcrsid.'&'.
3116: $symb.'&'.
3117: $now.'&'.$ENV{'REMOTE_ADDR'});
3118: my $token=&reply('tmpput:'.$infostr,$lonhost);
3119: if ($token=~/^error\:/) {
3120: &logthis("<font color=\"blue\">WARNING: ".
3121: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
3122: "</font>");
3123: return '';
3124: }
3125:
3126: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
3127: $token=~tr/a-z/A-Z/;
3128:
3129: my %infohash=('resource.0.outtoken' => $token,
3130: 'resource.0.checkouttime' => $now,
3131: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
3132:
3133: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3134: return '';
3135: } else {
3136: &logthis("<font color=\"blue\">WARNING: ".
3137: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
3138: "</font>");
3139: }
3140:
3141: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3142: &escape('Checkout '.$infostr.' - '.
3143: $token)) ne 'ok') {
3144: return '';
3145: } else {
3146: &logthis("<font color=\"blue\">WARNING: ".
3147: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
3148: "</font>");
3149: }
3150: return $token;
3151: }
3152:
3153: # ------------------------------------------------------------ Check in an item
3154:
3155: sub checkin {
3156: my $token=shift;
3157: my $now=time;
3158: my ($ta,$tb,$lonhost)=split(/\*/,$token);
3159: $lonhost=~tr/A-Z/a-z/;
3160: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
3161: $dtoken=~s/\W/\_/g;
3162: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
3163: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
3164:
3165: unless (($tuname) && ($tudom)) {
3166: &logthis('Check in '.$token.' ('.$dtoken.') failed');
3167: return '';
3168: }
3169:
3170: unless (&allowed('mgr',$tcrsid)) {
3171: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3172: $env{'user.name'}.' - '.$env{'user.domain'});
3173: return '';
3174: }
3175:
3176: my %infohash=('resource.0.intoken' => $token,
3177: 'resource.0.checkintime' => $now,
3178: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3179:
3180: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3181: return '';
3182: }
3183:
3184: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3185: &escape('Checkin - '.$token)) ne 'ok') {
3186: return '';
3187: }
3188:
3189: return ($symb,$tuname,$tudom,$tcrsid);
3190: }
3191:
3192: # --------------------------------------------- Set Expire Date for Spreadsheet
3193:
3194: sub expirespread {
3195: my ($uname,$udom,$stype,$usymb)=@_;
3196: my $cid=$env{'request.course.id'};
3197: if ($cid) {
3198: my $now=time;
3199: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3200: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3201: $env{'course.'.$cid.'.num'}.
3202: ':nohist_expirationdates:'.
3203: &escape($key).'='.$now,
3204: $env{'course.'.$cid.'.home'})
3205: }
3206: return 'ok';
3207: }
3208:
3209: # ----------------------------------------------------- Devalidate Spreadsheets
3210:
3211: sub devalidate {
3212: my ($symb,$uname,$udom)=@_;
3213: my $cid=$env{'request.course.id'};
3214: if ($cid) {
3215: # delete the stored spreadsheets for
3216: # - the student level sheet of this user in course's homespace
3217: # - the assessment level sheet for this resource
3218: # for this user in user's homespace
3219: # - current conditional state info
3220: my $key=$uname.':'.$udom.':';
3221: my $status=
3222: &del('nohist_calculatedsheets',
3223: [$key.'studentcalc:'],
3224: $env{'course.'.$cid.'.domain'},
3225: $env{'course.'.$cid.'.num'})
3226: .' '.
3227: &del('nohist_calculatedsheets_'.$cid,
3228: [$key.'assesscalc:'.$symb],$udom,$uname);
3229: unless ($status eq 'ok ok') {
3230: &logthis('Could not devalidate spreadsheet '.
3231: $uname.' at '.$udom.' for '.
3232: $symb.': '.$status);
3233: }
3234: &delenv('user.state.'.$cid);
3235: }
3236: }
3237:
3238: sub get_scalar {
3239: my ($string,$end) = @_;
3240: my $value;
3241: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3242: $value = $1;
3243: } elsif ($$string =~ s/^([^&]*?)&//) {
3244: $value = $1;
3245: }
3246: return &unescape($value);
3247: }
3248:
3249: sub array2str {
3250: my (@array) = @_;
3251: my $result=&arrayref2str(\@array);
3252: $result=~s/^__ARRAY_REF__//;
3253: $result=~s/__END_ARRAY_REF__$//;
3254: return $result;
3255: }
3256:
3257: sub arrayref2str {
3258: my ($arrayref) = @_;
3259: my $result='__ARRAY_REF__';
3260: foreach my $elem (@$arrayref) {
3261: if(ref($elem) eq 'ARRAY') {
3262: $result.=&arrayref2str($elem).'&';
3263: } elsif(ref($elem) eq 'HASH') {
3264: $result.=&hashref2str($elem).'&';
3265: } elsif(ref($elem)) {
3266: #print("Got a ref of ".(ref($elem))." skipping.");
3267: } else {
3268: $result.=&escape($elem).'&';
3269: }
3270: }
3271: $result=~s/\&$//;
3272: $result .= '__END_ARRAY_REF__';
3273: return $result;
3274: }
3275:
3276: sub hash2str {
3277: my (%hash) = @_;
3278: my $result=&hashref2str(\%hash);
3279: $result=~s/^__HASH_REF__//;
3280: $result=~s/__END_HASH_REF__$//;
3281: return $result;
3282: }
3283:
3284: sub hashref2str {
3285: my ($hashref)=@_;
3286: my $result='__HASH_REF__';
3287: foreach my $key (sort(keys(%$hashref))) {
3288: if (ref($key) eq 'ARRAY') {
3289: $result.=&arrayref2str($key).'=';
3290: } elsif (ref($key) eq 'HASH') {
3291: $result.=&hashref2str($key).'=';
3292: } elsif (ref($key)) {
3293: $result.='=';
3294: #print("Got a ref of ".(ref($key))." skipping.");
3295: } else {
3296: if ($key) {$result.=&escape($key).'=';} else { last; }
3297: }
3298:
3299: if(ref($hashref->{$key}) eq 'ARRAY') {
3300: $result.=&arrayref2str($hashref->{$key}).'&';
3301: } elsif(ref($hashref->{$key}) eq 'HASH') {
3302: $result.=&hashref2str($hashref->{$key}).'&';
3303: } elsif(ref($hashref->{$key})) {
3304: $result.='&';
3305: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3306: } else {
3307: $result.=&escape($hashref->{$key}).'&';
3308: }
3309: }
3310: $result=~s/\&$//;
3311: $result .= '__END_HASH_REF__';
3312: return $result;
3313: }
3314:
3315: sub str2hash {
3316: my ($string)=@_;
3317: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3318: return %$hash;
3319: }
3320:
3321: sub str2hashref {
3322: my ($string) = @_;
3323:
3324: my %hash;
3325:
3326: if($string !~ /^__HASH_REF__/) {
3327: if (! ($string eq '' || !defined($string))) {
3328: $hash{'error'}='Not hash reference';
3329: }
3330: return (\%hash, $string);
3331: }
3332:
3333: $string =~ s/^__HASH_REF__//;
3334:
3335: while($string !~ /^__END_HASH_REF__/) {
3336: #key
3337: my $key='';
3338: if($string =~ /^__HASH_REF__/) {
3339: ($key, $string)=&str2hashref($string);
3340: if(defined($key->{'error'})) {
3341: $hash{'error'}='Bad data';
3342: return (\%hash, $string);
3343: }
3344: } elsif($string =~ /^__ARRAY_REF__/) {
3345: ($key, $string)=&str2arrayref($string);
3346: if($key->[0] eq 'Array reference error') {
3347: $hash{'error'}='Bad data';
3348: return (\%hash, $string);
3349: }
3350: } else {
3351: $string =~ s/^(.*?)=//;
3352: $key=&unescape($1);
3353: }
3354: $string =~ s/^=//;
3355:
3356: #value
3357: my $value='';
3358: if($string =~ /^__HASH_REF__/) {
3359: ($value, $string)=&str2hashref($string);
3360: if(defined($value->{'error'})) {
3361: $hash{'error'}='Bad data';
3362: return (\%hash, $string);
3363: }
3364: } elsif($string =~ /^__ARRAY_REF__/) {
3365: ($value, $string)=&str2arrayref($string);
3366: if($value->[0] eq 'Array reference error') {
3367: $hash{'error'}='Bad data';
3368: return (\%hash, $string);
3369: }
3370: } else {
3371: $value=&get_scalar(\$string,'__END_HASH_REF__');
3372: }
3373: $string =~ s/^&//;
3374:
3375: $hash{$key}=$value;
3376: }
3377:
3378: $string =~ s/^__END_HASH_REF__//;
3379:
3380: return (\%hash, $string);
3381: }
3382:
3383: sub str2array {
3384: my ($string)=@_;
3385: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3386: return @$array;
3387: }
3388:
3389: sub str2arrayref {
3390: my ($string) = @_;
3391: my @array;
3392:
3393: if($string !~ /^__ARRAY_REF__/) {
3394: if (! ($string eq '' || !defined($string))) {
3395: $array[0]='Array reference error';
3396: }
3397: return (\@array, $string);
3398: }
3399:
3400: $string =~ s/^__ARRAY_REF__//;
3401:
3402: while($string !~ /^__END_ARRAY_REF__/) {
3403: my $value='';
3404: if($string =~ /^__HASH_REF__/) {
3405: ($value, $string)=&str2hashref($string);
3406: if(defined($value->{'error'})) {
3407: $array[0] ='Array reference error';
3408: return (\@array, $string);
3409: }
3410: } elsif($string =~ /^__ARRAY_REF__/) {
3411: ($value, $string)=&str2arrayref($string);
3412: if($value->[0] eq 'Array reference error') {
3413: $array[0] ='Array reference error';
3414: return (\@array, $string);
3415: }
3416: } else {
3417: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3418: }
3419: $string =~ s/^&//;
3420:
3421: push(@array, $value);
3422: }
3423:
3424: $string =~ s/^__END_ARRAY_REF__//;
3425:
3426: return (\@array, $string);
3427: }
3428:
3429: # -------------------------------------------------------------------Temp Store
3430:
3431: sub tmpreset {
3432: my ($symb,$namespace,$domain,$stuname) = @_;
3433: if (!$symb) {
3434: $symb=&symbread();
3435: if (!$symb) { $symb= $env{'request.url'}; }
3436: }
3437: $symb=escape($symb);
3438:
3439: if (!$namespace) { $namespace=$env{'request.state'}; }
3440: $namespace=~s/\//\_/g;
3441: $namespace=~s/\W//g;
3442:
3443: if (!$domain) { $domain=$env{'user.domain'}; }
3444: if (!$stuname) { $stuname=$env{'user.name'}; }
3445: if ($domain eq 'public' && $stuname eq 'public') {
3446: $stuname=$ENV{'REMOTE_ADDR'};
3447: }
3448: my $path=$perlvar{'lonDaemons'}.'/tmp';
3449: my %hash;
3450: if (tie(%hash,'GDBM_File',
3451: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3452: &GDBM_WRCREAT(),0640)) {
3453: foreach my $key (keys(%hash)) {
3454: if ($key=~ /:$symb/) {
3455: delete($hash{$key});
3456: }
3457: }
3458: }
3459: }
3460:
3461: sub tmpstore {
3462: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3463:
3464: if (!$symb) {
3465: $symb=&symbread();
3466: if (!$symb) { $symb= $env{'request.url'}; }
3467: }
3468: $symb=escape($symb);
3469:
3470: if (!$namespace) {
3471: # I don't think we would ever want to store this for a course.
3472: # it seems this will only be used if we don't have a course.
3473: #$namespace=$env{'request.course.id'};
3474: #if (!$namespace) {
3475: $namespace=$env{'request.state'};
3476: #}
3477: }
3478: $namespace=~s/\//\_/g;
3479: $namespace=~s/\W//g;
3480: if (!$domain) { $domain=$env{'user.domain'}; }
3481: if (!$stuname) { $stuname=$env{'user.name'}; }
3482: if ($domain eq 'public' && $stuname eq 'public') {
3483: $stuname=$ENV{'REMOTE_ADDR'};
3484: }
3485: my $now=time;
3486: my %hash;
3487: my $path=$perlvar{'lonDaemons'}.'/tmp';
3488: if (tie(%hash,'GDBM_File',
3489: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3490: &GDBM_WRCREAT(),0640)) {
3491: $hash{"version:$symb"}++;
3492: my $version=$hash{"version:$symb"};
3493: my $allkeys='';
3494: foreach my $key (keys(%$storehash)) {
3495: $allkeys.=$key.':';
3496: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3497: }
3498: $hash{"$version:$symb:timestamp"}=$now;
3499: $allkeys.='timestamp';
3500: $hash{"$version:keys:$symb"}=$allkeys;
3501: if (untie(%hash)) {
3502: return 'ok';
3503: } else {
3504: return "error:$!";
3505: }
3506: } else {
3507: return "error:$!";
3508: }
3509: }
3510:
3511: # -----------------------------------------------------------------Temp Restore
3512:
3513: sub tmprestore {
3514: my ($symb,$namespace,$domain,$stuname) = @_;
3515:
3516: if (!$symb) {
3517: $symb=&symbread();
3518: if (!$symb) { $symb= $env{'request.url'}; }
3519: }
3520: $symb=escape($symb);
3521:
3522: if (!$namespace) { $namespace=$env{'request.state'}; }
3523:
3524: if (!$domain) { $domain=$env{'user.domain'}; }
3525: if (!$stuname) { $stuname=$env{'user.name'}; }
3526: if ($domain eq 'public' && $stuname eq 'public') {
3527: $stuname=$ENV{'REMOTE_ADDR'};
3528: }
3529: my %returnhash;
3530: $namespace=~s/\//\_/g;
3531: $namespace=~s/\W//g;
3532: my %hash;
3533: my $path=$perlvar{'lonDaemons'}.'/tmp';
3534: if (tie(%hash,'GDBM_File',
3535: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3536: &GDBM_READER(),0640)) {
3537: my $version=$hash{"version:$symb"};
3538: $returnhash{'version'}=$version;
3539: my $scope;
3540: for ($scope=1;$scope<=$version;$scope++) {
3541: my $vkeys=$hash{"$scope:keys:$symb"};
3542: my @keys=split(/:/,$vkeys);
3543: my $key;
3544: $returnhash{"$scope:keys"}=$vkeys;
3545: foreach $key (@keys) {
3546: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3547: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3548: }
3549: }
3550: if (!(untie(%hash))) {
3551: return "error:$!";
3552: }
3553: } else {
3554: return "error:$!";
3555: }
3556: return %returnhash;
3557: }
3558:
3559: # ----------------------------------------------------------------------- Store
3560:
3561: sub store {
3562: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3563: my $home='';
3564:
3565: if ($stuname) { $home=&homeserver($stuname,$domain); }
3566:
3567: $symb=&symbclean($symb);
3568: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3569:
3570: if (!$domain) { $domain=$env{'user.domain'}; }
3571: if (!$stuname) { $stuname=$env{'user.name'}; }
3572:
3573: &devalidate($symb,$stuname,$domain);
3574:
3575: $symb=escape($symb);
3576: if (!$namespace) {
3577: unless ($namespace=$env{'request.course.id'}) {
3578: return '';
3579: }
3580: }
3581: if (!$home) { $home=$env{'user.home'}; }
3582:
3583: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3584: $$storehash{'host'}=$perlvar{'lonHostID'};
3585:
3586: my $namevalue='';
3587: foreach my $key (keys(%$storehash)) {
3588: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3589: }
3590: $namevalue=~s/\&$//;
3591: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3592: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3593: }
3594:
3595: # -------------------------------------------------------------- Critical Store
3596:
3597: sub cstore {
3598: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3599: my $home='';
3600:
3601: if ($stuname) { $home=&homeserver($stuname,$domain); }
3602:
3603: $symb=&symbclean($symb);
3604: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3605:
3606: if (!$domain) { $domain=$env{'user.domain'}; }
3607: if (!$stuname) { $stuname=$env{'user.name'}; }
3608:
3609: &devalidate($symb,$stuname,$domain);
3610:
3611: $symb=escape($symb);
3612: if (!$namespace) {
3613: unless ($namespace=$env{'request.course.id'}) {
3614: return '';
3615: }
3616: }
3617: if (!$home) { $home=$env{'user.home'}; }
3618:
3619: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3620: $$storehash{'host'}=$perlvar{'lonHostID'};
3621:
3622: my $namevalue='';
3623: foreach my $key (keys(%$storehash)) {
3624: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3625: }
3626: $namevalue=~s/\&$//;
3627: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3628: return critical
3629: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3630: }
3631:
3632: # --------------------------------------------------------------------- Restore
3633:
3634: sub restore {
3635: my ($symb,$namespace,$domain,$stuname) = @_;
3636: my $home='';
3637:
3638: if ($stuname) { $home=&homeserver($stuname,$domain); }
3639:
3640: if (!$symb) {
3641: unless ($symb=escape(&symbread())) { return ''; }
3642: } else {
3643: $symb=&escape(&symbclean($symb));
3644: }
3645: if (!$namespace) {
3646: unless ($namespace=$env{'request.course.id'}) {
3647: return '';
3648: }
3649: }
3650: if (!$domain) { $domain=$env{'user.domain'}; }
3651: if (!$stuname) { $stuname=$env{'user.name'}; }
3652: if (!$home) { $home=$env{'user.home'}; }
3653: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3654:
3655: my %returnhash=();
3656: foreach my $line (split(/\&/,$answer)) {
3657: my ($name,$value)=split(/\=/,$line);
3658: $returnhash{&unescape($name)}=&thaw_unescape($value);
3659: }
3660: my $version;
3661: for ($version=1;$version<=$returnhash{'version'};$version++) {
3662: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3663: $returnhash{$item}=$returnhash{$version.':'.$item};
3664: }
3665: }
3666: return %returnhash;
3667: }
3668:
3669: # ---------------------------------------------------------- Course Description
3670:
3671: sub coursedescription {
3672: my ($courseid,$args)=@_;
3673: $courseid=~s/^\///;
3674: $courseid=~s/\_/\//g;
3675: my ($cdomain,$cnum)=split(/\//,$courseid);
3676: my $chome=&homeserver($cnum,$cdomain);
3677: my $normalid=$cdomain.'_'.$cnum;
3678: # need to always cache even if we get errors otherwise we keep
3679: # trying and trying and trying to get the course description.
3680: my %envhash=();
3681: my %returnhash=();
3682:
3683: my $expiretime=600;
3684: if ($env{'request.course.id'} eq $normalid) {
3685: $expiretime=120;
3686: }
3687:
3688: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3689: if (!$args->{'freshen_cache'}
3690: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3691: foreach my $key (keys(%env)) {
3692: next if ($key !~ /^\Q$prefix\E(.*)/);
3693: my ($setting) = $1;
3694: $returnhash{$setting} = $env{$key};
3695: }
3696: return %returnhash;
3697: }
3698:
3699: # get the data agin
3700: if (!$args->{'one_time'}) {
3701: $envhash{'course.'.$normalid.'.last_cache'}=time;
3702: }
3703:
3704: if ($chome ne 'no_host') {
3705: %returnhash=&dump('environment',$cdomain,$cnum);
3706: if (!exists($returnhash{'con_lost'})) {
3707: $returnhash{'home'}= $chome;
3708: $returnhash{'domain'} = $cdomain;
3709: $returnhash{'num'} = $cnum;
3710: if (!defined($returnhash{'type'})) {
3711: $returnhash{'type'} = 'Course';
3712: }
3713: while (my ($name,$value) = each %returnhash) {
3714: $envhash{'course.'.$normalid.'.'.$name}=$value;
3715: }
3716: $returnhash{'url'}=&clutter($returnhash{'url'});
3717: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3718: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3719: $envhash{'course.'.$normalid.'.home'}=$chome;
3720: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3721: $envhash{'course.'.$normalid.'.num'}=$cnum;
3722: }
3723: }
3724: if (!$args->{'one_time'}) {
3725: &appenv(\%envhash);
3726: }
3727: return %returnhash;
3728: }
3729:
3730: # -------------------------------------------------See if a user is privileged
3731:
3732: sub privileged {
3733: my ($username,$domain)=@_;
3734: my $rolesdump=&reply("dump:$domain:$username:roles",
3735: &homeserver($username,$domain));
3736: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3737: my $now=time;
3738: if ($rolesdump ne '') {
3739: foreach my $entry (split(/&/,$rolesdump)) {
3740: if ($entry!~/^rolesdef_/) {
3741: my ($area,$role)=split(/=/,$entry);
3742: $area=~s/\_\w\w$//;
3743: my ($trole,$tend,$tstart)=split(/_/,$role);
3744: if (($trole eq 'dc') || ($trole eq 'su')) {
3745: my $active=1;
3746: if ($tend) {
3747: if ($tend<$now) { $active=0; }
3748: }
3749: if ($tstart) {
3750: if ($tstart>$now) { $active=0; }
3751: }
3752: if ($active) { return 1; }
3753: }
3754: }
3755: }
3756: }
3757: return 0;
3758: }
3759:
3760: # -------------------------------------------------------- Get user privileges
3761:
3762: sub rolesinit {
3763: my ($domain,$username,$authhost)=@_;
3764: my %userroles;
3765: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3766: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return \%userroles; }
3767: my %allroles=();
3768: my %allgroups=();
3769: my $now=time;
3770: %userroles = ('user.login.time' => $now);
3771: my $group_privs;
3772:
3773: if ($rolesdump ne '') {
3774: foreach my $entry (split(/&/,$rolesdump)) {
3775: if ($entry!~/^rolesdef_/) {
3776: my ($area,$role)=split(/=/,$entry);
3777: $area=~s/\_\w\w$//;
3778: my ($trole,$tend,$tstart,$group_privs);
3779: if ($role=~/^cr/) {
3780: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3781: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3782: ($tend,$tstart)=split('_',$trest);
3783: } else {
3784: $trole=$role;
3785: }
3786: } elsif ($role =~ m|^gr/|) {
3787: ($trole,$tend,$tstart) = split(/_/,$role);
3788: ($trole,$group_privs) = split(/\//,$trole);
3789: $group_privs = &unescape($group_privs);
3790: } else {
3791: ($trole,$tend,$tstart)=split(/_/,$role);
3792: }
3793: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3794: $username);
3795: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3796: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3797: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3798: if (($area ne '') && ($trole ne '')) {
3799: my $spec=$trole.'.'.$area;
3800: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3801: if ($trole =~ /^cr\//) {
3802: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3803: } elsif ($trole eq 'gr') {
3804: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3805: } else {
3806: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3807: }
3808: }
3809: }
3810: }
3811: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3812: $userroles{'user.adv'} = $adv;
3813: $userroles{'user.author'} = $author;
3814: $env{'user.adv'}=$adv;
3815: }
3816: return \%userroles;
3817: }
3818:
3819: sub set_arearole {
3820: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3821: # log the associated role with the area
3822: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3823: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3824: }
3825:
3826: sub custom_roleprivs {
3827: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3828: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3829: my $homsvr=homeserver($rauthor,$rdomain);
3830: if (&hostname($homsvr) ne '') {
3831: my ($rdummy,$roledef)=
3832: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3833: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3834: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3835: if (defined($syspriv)) {
3836: $$allroles{'cm./'}.=':'.$syspriv;
3837: $$allroles{$spec.'./'}.=':'.$syspriv;
3838: }
3839: if ($tdomain ne '') {
3840: if (defined($dompriv)) {
3841: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3842: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3843: }
3844: if (($trest ne '') && (defined($coursepriv))) {
3845: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3846: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3847: }
3848: }
3849: }
3850: }
3851: }
3852:
3853: sub group_roleprivs {
3854: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3855: my $access = 1;
3856: my $now = time;
3857: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3858: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3859: if ($access) {
3860: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3861: $$allgroups{$course}{$group} .=':'.$group_privs;
3862: }
3863: }
3864:
3865: sub standard_roleprivs {
3866: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3867: if (defined($pr{$trole.':s'})) {
3868: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3869: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3870: }
3871: if ($tdomain ne '') {
3872: if (defined($pr{$trole.':d'})) {
3873: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3874: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3875: }
3876: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3877: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3878: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3879: }
3880: }
3881: }
3882:
3883: sub set_userprivs {
3884: my ($userroles,$allroles,$allgroups) = @_;
3885: my $author=0;
3886: my $adv=0;
3887: my %grouproles = ();
3888: if (keys(%{$allgroups}) > 0) {
3889: foreach my $role (keys(%{$allroles})) {
3890: my ($trole,$area,$sec,$extendedarea);
3891: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3892: $trole = $1;
3893: $area = $2;
3894: $sec = $3;
3895: $extendedarea = $area.$sec;
3896: if (exists($$allgroups{$area})) {
3897: foreach my $group (keys(%{$$allgroups{$area}})) {
3898: my $spec = $trole.'.'.$extendedarea;
3899: $grouproles{$spec.'.'.$area.'/'.$group} =
3900: $$allgroups{$area}{$group};
3901: }
3902: }
3903: }
3904: }
3905: }
3906: foreach my $group (keys(%grouproles)) {
3907: $$allroles{$group} = $grouproles{$group};
3908: }
3909: foreach my $role (keys(%{$allroles})) {
3910: my %thesepriv;
3911: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3912: foreach my $item (split(/:/,$$allroles{$role})) {
3913: if ($item ne '') {
3914: my ($privilege,$restrictions)=split(/&/,$item);
3915: if ($restrictions eq '') {
3916: $thesepriv{$privilege}='F';
3917: } elsif ($thesepriv{$privilege} ne 'F') {
3918: $thesepriv{$privilege}.=$restrictions;
3919: }
3920: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3921: }
3922: }
3923: my $thesestr='';
3924: foreach my $priv (keys(%thesepriv)) {
3925: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3926: }
3927: $userroles->{'user.priv.'.$role} = $thesestr;
3928: }
3929: return ($author,$adv);
3930: }
3931:
3932: sub role_status {
3933: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
3934: my @pwhere = ();
3935: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
3936: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
3937: unless (!defined($$role) || $$role eq '') {
3938: $$where=join('.',@pwhere);
3939: $$trolecode=$$role.'.'.$$where;
3940: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
3941: $$tstatus='is';
3942: if ($$tstart && $$tstart>$then) {
3943: $$tstatus='future';
3944: if ($$tstart<$now) { $$tstatus='will'; }
3945: }
3946: if ($$tend) {
3947: if ($$tend<$then) {
3948: $$tstatus='expired';
3949: } elsif ($$tend<$now) {
3950: $$tstatus='will_not';
3951: }
3952: }
3953: }
3954: }
3955: }
3956:
3957: sub check_adhoc_privs {
3958: my ($cdom,$cnum,$then,$now,$checkrole) = @_;
3959: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
3960: if ($env{$cckey}) {
3961: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
3962: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
3963: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
3964: &set_adhoc_privileges($cdom,$cnum,$checkrole);
3965: }
3966: } else {
3967: &set_adhoc_privileges($cdom,$cnum,$checkrole);
3968: }
3969: }
3970:
3971: sub set_adhoc_privileges {
3972: # role can be cc or ca
3973: my ($dcdom,$pickedcourse,$role) = @_;
3974: my $area = '/'.$dcdom.'/'.$pickedcourse;
3975: my $spec = $role.'.'.$area;
3976: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
3977: $env{'user.name'});
3978: my %ccrole = ();
3979: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
3980: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
3981: &appenv(\%userroles,[$role,'cm']);
3982: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
3983: &appenv( {'request.role' => $spec,
3984: 'request.role.domain' => $dcdom,
3985: 'request.course.sec' => ''
3986: }
3987: );
3988: my $tadv=0;
3989: if (&allowed('adv') eq 'F') { $tadv=1; }
3990: &appenv({'request.role.adv' => $tadv});
3991: }
3992:
3993: # --------------------------------------------------------------- get interface
3994:
3995: sub get {
3996: my ($namespace,$storearr,$udomain,$uname)=@_;
3997: my $items='';
3998: foreach my $item (@$storearr) {
3999: $items.=&escape($item).'&';
4000: }
4001: $items=~s/\&$//;
4002: if (!$udomain) { $udomain=$env{'user.domain'}; }
4003: if (!$uname) { $uname=$env{'user.name'}; }
4004: my $uhome=&homeserver($uname,$udomain);
4005:
4006: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4007: my @pairs=split(/\&/,$rep);
4008: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4009: return @pairs;
4010: }
4011: my %returnhash=();
4012: my $i=0;
4013: foreach my $item (@$storearr) {
4014: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4015: $i++;
4016: }
4017: return %returnhash;
4018: }
4019:
4020: # --------------------------------------------------------------- del interface
4021:
4022: sub del {
4023: my ($namespace,$storearr,$udomain,$uname)=@_;
4024: my $items='';
4025: foreach my $item (@$storearr) {
4026: $items.=&escape($item).'&';
4027: }
4028:
4029: $items=~s/\&$//;
4030: if (!$udomain) { $udomain=$env{'user.domain'}; }
4031: if (!$uname) { $uname=$env{'user.name'}; }
4032: my $uhome=&homeserver($uname,$udomain);
4033: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4034: }
4035:
4036: # -------------------------------------------------------------- dump interface
4037:
4038: sub dump {
4039: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4040: if (!$udomain) { $udomain=$env{'user.domain'}; }
4041: if (!$uname) { $uname=$env{'user.name'}; }
4042: my $uhome=&homeserver($uname,$udomain);
4043: if ($regexp) {
4044: $regexp=&escape($regexp);
4045: } else {
4046: $regexp='.';
4047: }
4048: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4049: my @pairs=split(/\&/,$rep);
4050: my %returnhash=();
4051: foreach my $item (@pairs) {
4052: my ($key,$value)=split(/=/,$item,2);
4053: $key = &unescape($key);
4054: next if ($key =~ /^error: 2 /);
4055: $returnhash{$key}=&thaw_unescape($value);
4056: }
4057: return %returnhash;
4058: }
4059:
4060: # --------------------------------------------------------- dumpstore interface
4061:
4062: sub dumpstore {
4063: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4064: if (!$udomain) { $udomain=$env{'user.domain'}; }
4065: if (!$uname) { $uname=$env{'user.name'}; }
4066: my $uhome=&homeserver($uname,$udomain);
4067: if ($regexp) {
4068: $regexp=&escape($regexp);
4069: } else {
4070: $regexp='.';
4071: }
4072: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4073: my @pairs=split(/\&/,$rep);
4074: my %returnhash=();
4075: foreach my $item (@pairs) {
4076: my ($key,$value)=split(/=/,$item,2);
4077: next if ($key =~ /^error: 2 /);
4078: $returnhash{$key}=&thaw_unescape($value);
4079: }
4080: return %returnhash;
4081: }
4082:
4083: # -------------------------------------------------------------- keys interface
4084:
4085: sub getkeys {
4086: my ($namespace,$udomain,$uname)=@_;
4087: if (!$udomain) { $udomain=$env{'user.domain'}; }
4088: if (!$uname) { $uname=$env{'user.name'}; }
4089: my $uhome=&homeserver($uname,$udomain);
4090: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4091: my @keyarray=();
4092: foreach my $key (split(/\&/,$rep)) {
4093: next if ($key =~ /^error: 2 /);
4094: push(@keyarray,&unescape($key));
4095: }
4096: return @keyarray;
4097: }
4098:
4099: # --------------------------------------------------------------- currentdump
4100: sub currentdump {
4101: my ($courseid,$sdom,$sname)=@_;
4102: $courseid = $env{'request.course.id'} if (! defined($courseid));
4103: $sdom = $env{'user.domain'} if (! defined($sdom));
4104: $sname = $env{'user.name'} if (! defined($sname));
4105: my $uhome = &homeserver($sname,$sdom);
4106: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4107: return if ($rep =~ /^(error:|no_such_host)/);
4108: #
4109: my %returnhash=();
4110: #
4111: if ($rep eq "unknown_cmd") {
4112: # an old lond will not know currentdump
4113: # Do a dump and make it look like a currentdump
4114: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4115: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4116: my %hash = @tmp;
4117: @tmp=();
4118: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4119: } else {
4120: my @pairs=split(/\&/,$rep);
4121: foreach my $pair (@pairs) {
4122: my ($key,$value)=split(/=/,$pair,2);
4123: my ($symb,$param) = split(/:/,$key);
4124: $returnhash{&unescape($symb)}->{&unescape($param)} =
4125: &thaw_unescape($value);
4126: }
4127: }
4128: return %returnhash;
4129: }
4130:
4131: sub convert_dump_to_currentdump{
4132: my %hash = %{shift()};
4133: my %returnhash;
4134: # Code ripped from lond, essentially. The only difference
4135: # here is the unescaping done by lonnet::dump(). Conceivably
4136: # we might run in to problems with parameter names =~ /^v\./
4137: while (my ($key,$value) = each(%hash)) {
4138: my ($v,$symb,$param) = split(/:/,$key);
4139: $symb = &unescape($symb);
4140: $param = &unescape($param);
4141: next if ($v eq 'version' || $symb eq 'keys');
4142: next if (exists($returnhash{$symb}) &&
4143: exists($returnhash{$symb}->{$param}) &&
4144: $returnhash{$symb}->{'v.'.$param} > $v);
4145: $returnhash{$symb}->{$param}=$value;
4146: $returnhash{$symb}->{'v.'.$param}=$v;
4147: }
4148: #
4149: # Remove all of the keys in the hashes which keep track of
4150: # the version of the parameter.
4151: while (my ($symb,$param_hash) = each(%returnhash)) {
4152: # use a foreach because we are going to delete from the hash.
4153: foreach my $key (keys(%$param_hash)) {
4154: delete($param_hash->{$key}) if ($key =~ /^v\./);
4155: }
4156: }
4157: return \%returnhash;
4158: }
4159:
4160: # ------------------------------------------------------ critical inc interface
4161:
4162: sub cinc {
4163: return &inc(@_,'critical');
4164: }
4165:
4166: # --------------------------------------------------------------- inc interface
4167:
4168: sub inc {
4169: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4170: if (!$udomain) { $udomain=$env{'user.domain'}; }
4171: if (!$uname) { $uname=$env{'user.name'}; }
4172: my $uhome=&homeserver($uname,$udomain);
4173: my $items='';
4174: if (! ref($store)) {
4175: # got a single value, so use that instead
4176: $items = &escape($store).'=&';
4177: } elsif (ref($store) eq 'SCALAR') {
4178: $items = &escape($$store).'=&';
4179: } elsif (ref($store) eq 'ARRAY') {
4180: $items = join('=&',map {&escape($_);} @{$store});
4181: } elsif (ref($store) eq 'HASH') {
4182: while (my($key,$value) = each(%{$store})) {
4183: $items.= &escape($key).'='.&escape($value).'&';
4184: }
4185: }
4186: $items=~s/\&$//;
4187: if ($critical) {
4188: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4189: } else {
4190: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4191: }
4192: }
4193:
4194: # --------------------------------------------------------------- put interface
4195:
4196: sub put {
4197: my ($namespace,$storehash,$udomain,$uname)=@_;
4198: if (!$udomain) { $udomain=$env{'user.domain'}; }
4199: if (!$uname) { $uname=$env{'user.name'}; }
4200: my $uhome=&homeserver($uname,$udomain);
4201: my $items='';
4202: foreach my $item (keys(%$storehash)) {
4203: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4204: }
4205: $items=~s/\&$//;
4206: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4207: }
4208:
4209: # ------------------------------------------------------------ newput interface
4210:
4211: sub newput {
4212: my ($namespace,$storehash,$udomain,$uname)=@_;
4213: if (!$udomain) { $udomain=$env{'user.domain'}; }
4214: if (!$uname) { $uname=$env{'user.name'}; }
4215: my $uhome=&homeserver($uname,$udomain);
4216: my $items='';
4217: foreach my $key (keys(%$storehash)) {
4218: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4219: }
4220: $items=~s/\&$//;
4221: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4222: }
4223:
4224: # --------------------------------------------------------- putstore interface
4225:
4226: sub putstore {
4227: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4228: if (!$udomain) { $udomain=$env{'user.domain'}; }
4229: if (!$uname) { $uname=$env{'user.name'}; }
4230: my $uhome=&homeserver($uname,$udomain);
4231: my $items='';
4232: foreach my $key (keys(%$storehash)) {
4233: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4234: }
4235: $items=~s/\&$//;
4236: my $esc_symb=&escape($symb);
4237: my $esc_v=&escape($version);
4238: my $reply =
4239: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4240: $uhome);
4241: if ($reply eq 'unknown_cmd') {
4242: # gfall back to way things use to be done
4243: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4244: $uname);
4245: }
4246: return $reply;
4247: }
4248:
4249: sub old_putstore {
4250: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4251: if (!$udomain) { $udomain=$env{'user.domain'}; }
4252: if (!$uname) { $uname=$env{'user.name'}; }
4253: my $uhome=&homeserver($uname,$udomain);
4254: my %newstorehash;
4255: foreach my $item (keys(%$storehash)) {
4256: my $key = $version.':'.&escape($symb).':'.$item;
4257: $newstorehash{$key} = $storehash->{$item};
4258: }
4259: my $items='';
4260: my %allitems = ();
4261: foreach my $item (keys(%newstorehash)) {
4262: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4263: my $key = $1.':keys:'.$2;
4264: $allitems{$key} .= $3.':';
4265: }
4266: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4267: }
4268: foreach my $item (keys(%allitems)) {
4269: $allitems{$item} =~ s/\:$//;
4270: $items.= $item.'='.$allitems{$item}.'&';
4271: }
4272: $items=~s/\&$//;
4273: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4274: }
4275:
4276: # ------------------------------------------------------ critical put interface
4277:
4278: sub cput {
4279: my ($namespace,$storehash,$udomain,$uname)=@_;
4280: if (!$udomain) { $udomain=$env{'user.domain'}; }
4281: if (!$uname) { $uname=$env{'user.name'}; }
4282: my $uhome=&homeserver($uname,$udomain);
4283: my $items='';
4284: foreach my $item (keys(%$storehash)) {
4285: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4286: }
4287: $items=~s/\&$//;
4288: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4289: }
4290:
4291: # -------------------------------------------------------------- eget interface
4292:
4293: sub eget {
4294: my ($namespace,$storearr,$udomain,$uname)=@_;
4295: my $items='';
4296: foreach my $item (@$storearr) {
4297: $items.=&escape($item).'&';
4298: }
4299: $items=~s/\&$//;
4300: if (!$udomain) { $udomain=$env{'user.domain'}; }
4301: if (!$uname) { $uname=$env{'user.name'}; }
4302: my $uhome=&homeserver($uname,$udomain);
4303: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4304: my @pairs=split(/\&/,$rep);
4305: my %returnhash=();
4306: my $i=0;
4307: foreach my $item (@$storearr) {
4308: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4309: $i++;
4310: }
4311: return %returnhash;
4312: }
4313:
4314: # ------------------------------------------------------------ tmpput interface
4315: sub tmpput {
4316: my ($storehash,$server,$context)=@_;
4317: my $items='';
4318: foreach my $item (keys(%$storehash)) {
4319: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4320: }
4321: $items=~s/\&$//;
4322: if (defined($context)) {
4323: $items .= ':'.&escape($context);
4324: }
4325: return &reply("tmpput:$items",$server);
4326: }
4327:
4328: # ------------------------------------------------------------ tmpget interface
4329: sub tmpget {
4330: my ($token,$server)=@_;
4331: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4332: my $rep=&reply("tmpget:$token",$server);
4333: my %returnhash;
4334: foreach my $item (split(/\&/,$rep)) {
4335: my ($key,$value)=split(/=/,$item);
4336: next if ($key =~ /^error: 2 /);
4337: $returnhash{&unescape($key)}=&thaw_unescape($value);
4338: }
4339: return %returnhash;
4340: }
4341:
4342: # ------------------------------------------------------------ tmpget interface
4343: sub tmpdel {
4344: my ($token,$server)=@_;
4345: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4346: return &reply("tmpdel:$token",$server);
4347: }
4348:
4349: # -------------------------------------------------- portfolio access checking
4350:
4351: sub portfolio_access {
4352: my ($requrl) = @_;
4353: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4354: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4355: if ($result) {
4356: my %setters;
4357: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4358: my ($startblock,$endblock) =
4359: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4360: if ($startblock && $endblock) {
4361: return 'B';
4362: }
4363: } else {
4364: my ($startblock,$endblock) =
4365: &Apache::loncommon::blockcheck(\%setters,'port');
4366: if ($startblock && $endblock) {
4367: return 'B';
4368: }
4369: }
4370: }
4371: if ($result eq 'ok') {
4372: return 'F';
4373: } elsif ($result =~ /^[^:]+:guest_/) {
4374: return 'A';
4375: }
4376: return '';
4377: }
4378:
4379: sub get_portfolio_access {
4380: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4381:
4382: if (!ref($access_hash)) {
4383: my $current_perms = &get_portfile_permissions($udom,$unum);
4384: my %access_controls = &get_access_controls($current_perms,$group,
4385: $file_name);
4386: $access_hash = $access_controls{$file_name};
4387: }
4388:
4389: my ($public,$guest,@domains,@users,@courses,@groups);
4390: my $now = time;
4391: if (ref($access_hash) eq 'HASH') {
4392: foreach my $key (keys(%{$access_hash})) {
4393: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4394: if ($start > $now) {
4395: next;
4396: }
4397: if ($end && $end<$now) {
4398: next;
4399: }
4400: if ($scope eq 'public') {
4401: $public = $key;
4402: last;
4403: } elsif ($scope eq 'guest') {
4404: $guest = $key;
4405: } elsif ($scope eq 'domains') {
4406: push(@domains,$key);
4407: } elsif ($scope eq 'users') {
4408: push(@users,$key);
4409: } elsif ($scope eq 'course') {
4410: push(@courses,$key);
4411: } elsif ($scope eq 'group') {
4412: push(@groups,$key);
4413: }
4414: }
4415: if ($public) {
4416: return 'ok';
4417: }
4418: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4419: if ($guest) {
4420: return $guest;
4421: }
4422: } else {
4423: if (@domains > 0) {
4424: foreach my $domkey (@domains) {
4425: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4426: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4427: return 'ok';
4428: }
4429: }
4430: }
4431: }
4432: if (@users > 0) {
4433: foreach my $userkey (@users) {
4434: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4435: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4436: if (ref($item) eq 'HASH') {
4437: if (($item->{'uname'} eq $env{'user.name'}) &&
4438: ($item->{'udom'} eq $env{'user.domain'})) {
4439: return 'ok';
4440: }
4441: }
4442: }
4443: }
4444: }
4445: }
4446: my %roleshash;
4447: my @courses_and_groups = @courses;
4448: push(@courses_and_groups,@groups);
4449: if (@courses_and_groups > 0) {
4450: my (%allgroups,%allroles);
4451: my ($start,$end,$role,$sec,$group);
4452: foreach my $envkey (%env) {
4453: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4454: my $cid = $2.'_'.$3;
4455: if ($1 eq 'gr') {
4456: $group = $4;
4457: $allgroups{$cid}{$group} = $env{$envkey};
4458: } else {
4459: if ($4 eq '') {
4460: $sec = 'none';
4461: } else {
4462: $sec = $4;
4463: }
4464: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4465: }
4466: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4467: my $cid = $2.'_'.$3;
4468: if ($4 eq '') {
4469: $sec = 'none';
4470: } else {
4471: $sec = $4;
4472: }
4473: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4474: }
4475: }
4476: if (keys(%allroles) == 0) {
4477: return;
4478: }
4479: foreach my $key (@courses_and_groups) {
4480: my %content = %{$$access_hash{$key}};
4481: my $cnum = $content{'number'};
4482: my $cdom = $content{'domain'};
4483: my $cid = $cdom.'_'.$cnum;
4484: if (!exists($allroles{$cid})) {
4485: next;
4486: }
4487: foreach my $role_id (keys(%{$content{'roles'}})) {
4488: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4489: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4490: my @status = @{$content{'roles'}{$role_id}{'access'}};
4491: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4492: foreach my $role (keys(%{$allroles{$cid}})) {
4493: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4494: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4495: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4496: if (grep/^all$/,@sections) {
4497: return 'ok';
4498: } else {
4499: if (grep/^$sec$/,@sections) {
4500: return 'ok';
4501: }
4502: }
4503: }
4504: }
4505: if (keys(%{$allgroups{$cid}}) == 0) {
4506: if (grep/^none$/,@groups) {
4507: return 'ok';
4508: }
4509: } else {
4510: if (grep/^all$/,@groups) {
4511: return 'ok';
4512: }
4513: foreach my $group (keys(%{$allgroups{$cid}})) {
4514: if (grep/^$group$/,@groups) {
4515: return 'ok';
4516: }
4517: }
4518: }
4519: }
4520: }
4521: }
4522: }
4523: }
4524: if ($guest) {
4525: return $guest;
4526: }
4527: }
4528: }
4529: return;
4530: }
4531:
4532: sub course_group_datechecker {
4533: my ($dates,$now,$status) = @_;
4534: my ($start,$end) = split(/\./,$dates);
4535: if (!$start && !$end) {
4536: return 'ok';
4537: }
4538: if (grep/^active$/,@{$status}) {
4539: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4540: return 'ok';
4541: }
4542: }
4543: if (grep/^previous$/,@{$status}) {
4544: if ($end > $now ) {
4545: return 'ok';
4546: }
4547: }
4548: if (grep/^future$/,@{$status}) {
4549: if ($start > $now) {
4550: return 'ok';
4551: }
4552: }
4553: return;
4554: }
4555:
4556: sub parse_portfolio_url {
4557: my ($url) = @_;
4558:
4559: my ($type,$udom,$unum,$group,$file_name);
4560:
4561: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4562: $type = 1;
4563: $udom = $1;
4564: $unum = $2;
4565: $file_name = $3;
4566: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4567: $type = 2;
4568: $udom = $1;
4569: $unum = $2;
4570: $group = $3;
4571: $file_name = $3.'/'.$4;
4572: }
4573: if (wantarray) {
4574: return ($type,$udom,$unum,$file_name,$group);
4575: }
4576: return $type;
4577: }
4578:
4579: sub is_portfolio_url {
4580: my ($url) = @_;
4581: return scalar(&parse_portfolio_url($url));
4582: }
4583:
4584: sub is_portfolio_file {
4585: my ($file) = @_;
4586: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4587: return 1;
4588: }
4589: return;
4590: }
4591:
4592: sub usertools_access {
4593: my ($uname,$udom,$tool,$action,$context) = @_;
4594: my ($access,%tools);
4595: if ($context eq '') {
4596: $context = 'tools';
4597: }
4598: if ($context eq 'requestcourses') {
4599: %tools = (
4600: official => 1,
4601: unofficial => 1,
4602: );
4603: } else {
4604: %tools = (
4605: aboutme => 1,
4606: blog => 1,
4607: portfolio => 1,
4608: );
4609: }
4610: return if (!defined($tools{$tool}));
4611:
4612: if ((!defined($udom)) || (!defined($uname))) {
4613: $udom = $env{'user.domain'};
4614: $uname = $env{'user.name'};
4615: }
4616:
4617: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4618: if ($action ne 'reload') {
4619: if ($context eq 'requestcourses') {
4620: return $env{'environment.canrequest.'.$tool};
4621: } else {
4622: return $env{'environment.availabletools.'.$tool};
4623: }
4624: }
4625: }
4626:
4627: my ($toolstatus,$inststatus);
4628:
4629: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4630: ($action ne 'reload')) {
4631: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4632: $inststatus = $env{'environment.inststatus'};
4633: } else {
4634: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool);
4635: $toolstatus = $userenv{$context.'.'.$tool};
4636: $inststatus = $userenv{'inststatus'};
4637: }
4638:
4639: if ($toolstatus ne '') {
4640: if ($toolstatus) {
4641: $access = 1;
4642: } else {
4643: $access = 0;
4644: }
4645: return $access;
4646: }
4647:
4648: my $is_adv = &is_advanced_user($udom,$uname);
4649: my %domdef = &get_domain_defaults($udom);
4650: if (ref($domdef{$tool}) eq 'HASH') {
4651: if ($is_adv) {
4652: if ($domdef{$tool}{'_LC_adv'} ne '') {
4653: if ($domdef{$tool}{'_LC_adv'}) {
4654: $access = 1;
4655: } else {
4656: $access = 0;
4657: }
4658: return $access;
4659: }
4660: }
4661: if ($inststatus ne '') {
4662: my ($hasaccess,$hasnoaccess);
4663: foreach my $affiliation (split(/:/,$inststatus)) {
4664: if ($domdef{$tool}{$affiliation} ne '') {
4665: if ($domdef{$tool}{$affiliation}) {
4666: $hasaccess = 1;
4667: } else {
4668: $hasnoaccess = 1;
4669: }
4670: }
4671: }
4672: if ($hasaccess || $hasnoaccess) {
4673: if ($hasaccess) {
4674: $access = 1;
4675: } elsif ($hasnoaccess) {
4676: $access = 0;
4677: }
4678: return $access;
4679: }
4680: } else {
4681: if ($domdef{$tool}{'default'} ne '') {
4682: if ($domdef{$tool}{'default'}) {
4683: $access = 1;
4684: } elsif ($domdef{$tool}{'default'} == 0) {
4685: $access = 0;
4686: }
4687: return $access;
4688: }
4689: }
4690: } else {
4691: if ($context eq 'tools') {
4692: $access = 1;
4693: } else {
4694: $access = 0;
4695: }
4696: return $access;
4697: }
4698: }
4699:
4700: sub is_advanced_user {
4701: my ($udom,$uname) = @_;
4702: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
4703: my %allroles;
4704: my $is_adv;
4705: foreach my $role (keys(%roleshash)) {
4706: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
4707: my $area = '/'.$tdomain.'/'.$trest;
4708: if ($sec ne '') {
4709: $area .= '/'.$sec;
4710: }
4711: if (($area ne '') && ($trole ne '')) {
4712: my $spec=$trole.'.'.$area;
4713: if ($trole =~ /^cr\//) {
4714: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4715: } elsif ($trole ne 'gr') {
4716: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4717: }
4718: }
4719: }
4720: foreach my $role (keys(%allroles)) {
4721: last if ($is_adv);
4722: foreach my $item (split(/:/,$allroles{$role})) {
4723: if ($item ne '') {
4724: my ($privilege,$restrictions)=split(/&/,$item);
4725: if ($privilege eq 'adv') {
4726: $is_adv = 1;
4727: last;
4728: }
4729: }
4730: }
4731: }
4732: return $is_adv;
4733: }
4734:
4735: # ---------------------------------------------- Custom access rule evaluation
4736:
4737: sub customaccess {
4738: my ($priv,$uri)=@_;
4739: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4740: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4741: $udom = &LONCAPA::clean_domain($udom);
4742: $ucrs = &LONCAPA::clean_username($ucrs);
4743: my $access=0;
4744: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4745: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4746: if ($type eq 'user') {
4747: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4748: my ($tdom,$tuname)=split(m{/},$scope);
4749: if ($tdom) {
4750: if ($tdom ne $env{'user.domain'}) { next; }
4751: }
4752: if ($tuname) {
4753: if ($tuname ne $env{'user.name'}) { next; }
4754: }
4755: $access=($effect eq 'allow');
4756: last;
4757: }
4758: } else {
4759: if ($role) {
4760: if ($role ne $urole) { next; }
4761: }
4762: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4763: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4764: if ($tdom) {
4765: if ($tdom ne $udom) { next; }
4766: }
4767: if ($tcrs) {
4768: if ($tcrs ne $ucrs) { next; }
4769: }
4770: if ($tsec) {
4771: if ($tsec ne $usec) { next; }
4772: }
4773: $access=($effect eq 'allow');
4774: last;
4775: }
4776: if ($realm eq '' && $role eq '') {
4777: $access=($effect eq 'allow');
4778: }
4779: }
4780: }
4781: return $access;
4782: }
4783:
4784: # ------------------------------------------------- Check for a user privilege
4785:
4786: sub allowed {
4787: my ($priv,$uri,$symb,$role)=@_;
4788: my $ver_orguri=$uri;
4789: $uri=&deversion($uri);
4790: my $orguri=$uri;
4791: $uri=&declutter($uri);
4792:
4793: if ($priv eq 'evb') {
4794: # Evade communication block restrictions for specified role in a course
4795: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4796: return $1;
4797: } else {
4798: return;
4799: }
4800: }
4801:
4802: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4803: # Free bre access to adm and meta resources
4804: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4805: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4806: && ($priv eq 'bre')) {
4807: return 'F';
4808: }
4809:
4810: # Free bre access to user's own portfolio contents
4811: my ($space,$domain,$name,@dir)=split('/',$uri);
4812: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4813: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4814: my %setters;
4815: my ($startblock,$endblock) =
4816: &Apache::loncommon::blockcheck(\%setters,'port');
4817: if ($startblock && $endblock) {
4818: return 'B';
4819: } else {
4820: return 'F';
4821: }
4822: }
4823:
4824: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4825: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4826: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4827: if (exists($env{'request.course.id'})) {
4828: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4829: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4830: if (($domain eq $cdom) && ($name eq $cnum)) {
4831: my $courseprivid=$env{'request.course.id'};
4832: $courseprivid=~s/\_/\//;
4833: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4834: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4835: return $1;
4836: } else {
4837: if ($env{'request.course.sec'}) {
4838: $courseprivid.='/'.$env{'request.course.sec'};
4839: }
4840: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4841: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4842: return $2;
4843: }
4844: }
4845: }
4846: }
4847: }
4848:
4849: # Free bre to public access
4850:
4851: if ($priv eq 'bre') {
4852: my $copyright=&metadata($uri,'copyright');
4853: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4854: return 'F';
4855: }
4856: if ($copyright eq 'priv') {
4857: $uri=~/([^\/]+)\/([^\/]+)\//;
4858: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4859: return '';
4860: }
4861: }
4862: if ($copyright eq 'domain') {
4863: $uri=~/([^\/]+)\/([^\/]+)\//;
4864: unless (($env{'user.domain'} eq $1) ||
4865: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4866: return '';
4867: }
4868: }
4869: if ($env{'request.role'}=~ /li\.\//) {
4870: # Library role, so allow browsing of resources in this domain.
4871: return 'F';
4872: }
4873: if ($copyright eq 'custom') {
4874: unless (&customaccess($priv,$uri)) { return ''; }
4875: }
4876: }
4877: # Domain coordinator is trying to create a course
4878: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4879: # uri is the requested domain in this case.
4880: # comparison to 'request.role.domain' shows if the user has selected
4881: # a role of dc for the domain in question.
4882: return 'F' if ($uri eq $env{'request.role.domain'});
4883: }
4884:
4885: my $thisallowed='';
4886: my $statecond=0;
4887: my $courseprivid='';
4888:
4889: # Course
4890:
4891: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4892: $thisallowed.=$1;
4893: }
4894:
4895: # Domain
4896:
4897: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4898: =~/\Q$priv\E\&([^\:]*)/) {
4899: $thisallowed.=$1;
4900: }
4901:
4902: # Course: uri itself is a course
4903: my $courseuri=$uri;
4904: $courseuri=~s/\_(\d)/\/$1/;
4905: $courseuri=~s/^([^\/])/\/$1/;
4906:
4907: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4908: =~/\Q$priv\E\&([^\:]*)/) {
4909: $thisallowed.=$1;
4910: }
4911:
4912: # URI is an uploaded document for this course, default permissions don't matter
4913: # not allowing 'edit' access (editupload) to uploaded course docs
4914: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4915: $thisallowed='';
4916: my ($match)=&is_on_map($uri);
4917: if ($match) {
4918: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4919: =~/\Q$priv\E\&([^\:]*)/) {
4920: $thisallowed.=$1;
4921: }
4922: } else {
4923: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4924: if ($refuri) {
4925: if ($refuri =~ m|^/adm/|) {
4926: $thisallowed='F';
4927: } else {
4928: $refuri=&declutter($refuri);
4929: my ($match) = &is_on_map($refuri);
4930: if ($match) {
4931: $thisallowed='F';
4932: }
4933: }
4934: }
4935: }
4936: }
4937:
4938: if ($priv eq 'bre'
4939: && $thisallowed ne 'F'
4940: && $thisallowed ne '2'
4941: && &is_portfolio_url($uri)) {
4942: $thisallowed = &portfolio_access($uri);
4943: }
4944:
4945: # Full access at system, domain or course-wide level? Exit.
4946: if ($thisallowed=~/F/) {
4947: return 'F';
4948: }
4949:
4950: # If this is generating or modifying users, exit with special codes
4951:
4952: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4953: if (($priv eq 'cca') || ($priv eq 'caa')) {
4954: my ($audom,$auname)=split('/',$uri);
4955: # no author name given, so this just checks on the general right to make a co-author in this domain
4956: unless ($auname) { return $thisallowed; }
4957: # an author name is given, so we are about to actually make a co-author for a certain account
4958: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4959: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4960: ($audom ne $env{'request.role.domain'}))) { return ''; }
4961: }
4962: return $thisallowed;
4963: }
4964: #
4965: # Gathered so far: system, domain and course wide privileges
4966: #
4967: # Course: See if uri or referer is an individual resource that is part of
4968: # the course
4969:
4970: if ($env{'request.course.id'}) {
4971:
4972: $courseprivid=$env{'request.course.id'};
4973: if ($env{'request.course.sec'}) {
4974: $courseprivid.='/'.$env{'request.course.sec'};
4975: }
4976: $courseprivid=~s/\_/\//;
4977: my $checkreferer=1;
4978: my ($match,$cond)=&is_on_map($uri);
4979: if ($match) {
4980: $statecond=$cond;
4981: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4982: =~/\Q$priv\E\&([^\:]*)/) {
4983: $thisallowed.=$1;
4984: $checkreferer=0;
4985: }
4986: }
4987:
4988: if ($checkreferer) {
4989: my $refuri=$env{'httpref.'.$orguri};
4990: unless ($refuri) {
4991: foreach my $key (keys(%env)) {
4992: if ($key=~/^httpref\..*\*/) {
4993: my $pattern=$key;
4994: $pattern=~s/^httpref\.\/res\///;
4995: $pattern=~s/\*/\[\^\/\]\+/g;
4996: $pattern=~s/\//\\\//g;
4997: if ($orguri=~/$pattern/) {
4998: $refuri=$env{$key};
4999: }
5000: }
5001: }
5002: }
5003:
5004: if ($refuri) {
5005: $refuri=&declutter($refuri);
5006: my ($match,$cond)=&is_on_map($refuri);
5007: if ($match) {
5008: my $refstatecond=$cond;
5009: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5010: =~/\Q$priv\E\&([^\:]*)/) {
5011: $thisallowed.=$1;
5012: $uri=$refuri;
5013: $statecond=$refstatecond;
5014: }
5015: }
5016: }
5017: }
5018: }
5019:
5020: #
5021: # Gathered now: all privileges that could apply, and condition number
5022: #
5023: #
5024: # Full or no access?
5025: #
5026:
5027: if ($thisallowed=~/F/) {
5028: return 'F';
5029: }
5030:
5031: unless ($thisallowed) {
5032: return '';
5033: }
5034:
5035: # Restrictions exist, deal with them
5036: #
5037: # C:according to course preferences
5038: # R:according to resource settings
5039: # L:unless locked
5040: # X:according to user session state
5041: #
5042:
5043: # Possibly locked functionality, check all courses
5044: # Locks might take effect only after 10 minutes cache expiration for other
5045: # courses, and 2 minutes for current course
5046:
5047: my $envkey;
5048: if ($thisallowed=~/L/) {
5049: foreach $envkey (keys(%env)) {
5050: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5051: my $courseid=$2;
5052: my $roleid=$1.'.'.$2;
5053: $courseid=~s/^\///;
5054: my $expiretime=600;
5055: if ($env{'request.role'} eq $roleid) {
5056: $expiretime=120;
5057: }
5058: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5059: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5060: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5061: &coursedescription($courseid,{'freshen_cache' => 1});
5062: }
5063: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5064: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5065: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5066: &log($env{'user.domain'},$env{'user.name'},
5067: $env{'user.home'},
5068: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5069: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5070: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5071: return '';
5072: }
5073: }
5074: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5075: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5076: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5077: &log($env{'user.domain'},$env{'user.name'},
5078: $env{'user.home'},
5079: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5080: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5081: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5082: return '';
5083: }
5084: }
5085: }
5086: }
5087: }
5088:
5089: #
5090: # Rest of the restrictions depend on selected course
5091: #
5092:
5093: unless ($env{'request.course.id'}) {
5094: if ($thisallowed eq 'A') {
5095: return 'A';
5096: } elsif ($thisallowed eq 'B') {
5097: return 'B';
5098: } else {
5099: return '1';
5100: }
5101: }
5102:
5103: #
5104: # Now user is definitely in a course
5105: #
5106:
5107:
5108: # Course preferences
5109:
5110: if ($thisallowed=~/C/) {
5111: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5112: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5113: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5114: =~/\Q$rolecode\E/) {
5115: if ($priv ne 'pch') {
5116: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5117: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5118: $env{'request.course.id'});
5119: }
5120: return '';
5121: }
5122:
5123: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5124: =~/\Q$unamedom\E/) {
5125: if ($priv ne 'pch') {
5126: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5127: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5128: $env{'request.course.id'});
5129: }
5130: return '';
5131: }
5132: }
5133:
5134: # Resource preferences
5135:
5136: if ($thisallowed=~/R/) {
5137: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5138: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5139: if ($priv ne 'pch') {
5140: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5141: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5142: }
5143: return '';
5144: }
5145: }
5146:
5147: # Restricted by state or randomout?
5148:
5149: if ($thisallowed=~/X/) {
5150: if ($env{'acc.randomout'}) {
5151: if (!$symb) { $symb=&symbread($uri,1); }
5152: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5153: return '';
5154: }
5155: }
5156: if (&condval($statecond)) {
5157: return '2';
5158: } else {
5159: return '';
5160: }
5161: }
5162:
5163: if ($thisallowed eq 'A') {
5164: return 'A';
5165: } elsif ($thisallowed eq 'B') {
5166: return 'B';
5167: }
5168: return 'F';
5169: }
5170:
5171: sub split_uri_for_cond {
5172: my $uri=&deversion(&declutter(shift));
5173: my @uriparts=split(/\//,$uri);
5174: my $filename=pop(@uriparts);
5175: my $pathname=join('/',@uriparts);
5176: return ($pathname,$filename);
5177: }
5178: # --------------------------------------------------- Is a resource on the map?
5179:
5180: sub is_on_map {
5181: my ($pathname,$filename) = &split_uri_for_cond(shift);
5182: #Trying to find the conditional for the file
5183: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5184: /\&\Q$filename\E\:([\d\|]+)\&/);
5185: if ($match) {
5186: return (1,$1);
5187: } else {
5188: return (0,0);
5189: }
5190: }
5191:
5192: # --------------------------------------------------------- Get symb from alias
5193:
5194: sub get_symb_from_alias {
5195: my $symb=shift;
5196: my ($map,$resid,$url)=&decode_symb($symb);
5197: # Already is a symb
5198: if ($url) { return $symb; }
5199: # Must be an alias
5200: my $aliassymb='';
5201: my %bighash;
5202: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5203: &GDBM_READER(),0640)) {
5204: my $rid=$bighash{'mapalias_'.$symb};
5205: if ($rid) {
5206: my ($mapid,$resid)=split(/\./,$rid);
5207: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5208: $resid,$bighash{'src_'.$rid});
5209: }
5210: untie %bighash;
5211: }
5212: return $aliassymb;
5213: }
5214:
5215: # ----------------------------------------------------------------- Define Role
5216:
5217: sub definerole {
5218: if (allowed('mcr','/')) {
5219: my ($rolename,$sysrole,$domrole,$courole)=@_;
5220: foreach my $role (split(':',$sysrole)) {
5221: my ($crole,$cqual)=split(/\&/,$role);
5222: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5223: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5224: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5225: return "refused:s:$crole&$cqual";
5226: }
5227: }
5228: }
5229: foreach my $role (split(':',$domrole)) {
5230: my ($crole,$cqual)=split(/\&/,$role);
5231: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5232: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5233: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5234: return "refused:d:$crole&$cqual";
5235: }
5236: }
5237: }
5238: foreach my $role (split(':',$courole)) {
5239: my ($crole,$cqual)=split(/\&/,$role);
5240: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5241: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5242: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5243: return "refused:c:$crole&$cqual";
5244: }
5245: }
5246: }
5247: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5248: "$env{'user.domain'}:$env{'user.name'}:".
5249: "rolesdef_$rolename=".
5250: escape($sysrole.'_'.$domrole.'_'.$courole);
5251: return reply($command,$env{'user.home'});
5252: } else {
5253: return 'refused';
5254: }
5255: }
5256:
5257: # ---------------- Make a metadata query against the network of library servers
5258:
5259: sub metadata_query {
5260: my ($query,$custom,$customshow,$server_array)=@_;
5261: my %rhash;
5262: my %libserv = &all_library();
5263: my @server_list = (defined($server_array) ? @$server_array
5264: : keys(%libserv) );
5265: for my $server (@server_list) {
5266: unless ($custom or $customshow) {
5267: my $reply=&reply("querysend:".&escape($query),$server);
5268: $rhash{$server}=$reply;
5269: }
5270: else {
5271: my $reply=&reply("querysend:".&escape($query).':'.
5272: &escape($custom).':'.&escape($customshow),
5273: $server);
5274: $rhash{$server}=$reply;
5275: }
5276: }
5277: return \%rhash;
5278: }
5279:
5280: # ----------------------------------------- Send log queries and wait for reply
5281:
5282: sub log_query {
5283: my ($uname,$udom,$query,%filters)=@_;
5284: my $uhome=&homeserver($uname,$udom);
5285: if ($uhome eq 'no_host') { return 'error: no_host'; }
5286: my $uhost=&hostname($uhome);
5287: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5288: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5289: $uhome);
5290: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5291: return get_query_reply($queryid);
5292: }
5293:
5294: # -------------------------- Update MySQL table for portfolio file
5295:
5296: sub update_portfolio_table {
5297: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5298: if ($group ne '') {
5299: $file_name =~s /^\Q$group\E//;
5300: }
5301: my $homeserver = &homeserver($uname,$udom);
5302: my $queryid=
5303: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5304: ':'.&escape($file_name).':'.$action,$homeserver);
5305: my $reply = &get_query_reply($queryid);
5306: return $reply;
5307: }
5308:
5309: # -------------------------- Update MySQL allusers table
5310:
5311: sub update_allusers_table {
5312: my ($uname,$udom,$names) = @_;
5313: my $homeserver = &homeserver($uname,$udom);
5314: my $queryid=
5315: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5316: 'lastname='.&escape($names->{'lastname'}).'%%'.
5317: 'firstname='.&escape($names->{'firstname'}).'%%'.
5318: 'middlename='.&escape($names->{'middlename'}).'%%'.
5319: 'generation='.&escape($names->{'generation'}).'%%'.
5320: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5321: 'id='.&escape($names->{'id'}),$homeserver);
5322: my $reply = &get_query_reply($queryid);
5323: return $reply;
5324: }
5325:
5326: # ------- Request retrieval of institutional classlists for course(s)
5327:
5328: sub fetch_enrollment_query {
5329: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5330: my $homeserver;
5331: my $maxtries = 1;
5332: if ($context eq 'automated') {
5333: $homeserver = $perlvar{'lonHostID'};
5334: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5335: } else {
5336: $homeserver = &homeserver($cnum,$dom);
5337: }
5338: my $host=&hostname($homeserver);
5339: my $cmd = '';
5340: foreach my $affiliate (keys(%{$affiliatesref})) {
5341: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5342: }
5343: $cmd =~ s/%%$//;
5344: $cmd = &escape($cmd);
5345: my $query = 'fetchenrollment';
5346: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5347: unless ($queryid=~/^\Q$host\E\_/) {
5348: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5349: return 'error: '.$queryid;
5350: }
5351: my $reply = &get_query_reply($queryid);
5352: my $tries = 1;
5353: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5354: $reply = &get_query_reply($queryid);
5355: $tries ++;
5356: }
5357: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5358: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5359: } else {
5360: my @responses = split(/:/,$reply);
5361: if ($homeserver eq $perlvar{'lonHostID'}) {
5362: foreach my $line (@responses) {
5363: my ($key,$value) = split(/=/,$line,2);
5364: $$replyref{$key} = $value;
5365: }
5366: } else {
5367: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5368: foreach my $line (@responses) {
5369: my ($key,$value) = split(/=/,$line);
5370: $$replyref{$key} = $value;
5371: if ($value > 0) {
5372: foreach my $item (@{$$affiliatesref{$key}}) {
5373: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5374: my $destname = $pathname.'/'.$filename;
5375: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5376: if ($xml_classlist =~ /^error/) {
5377: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5378: } else {
5379: if ( open(FILE,">$destname") ) {
5380: print FILE &unescape($xml_classlist);
5381: close(FILE);
5382: } else {
5383: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5384: }
5385: }
5386: }
5387: }
5388: }
5389: }
5390: return 'ok';
5391: }
5392: return 'error';
5393: }
5394:
5395: sub get_query_reply {
5396: my $queryid=shift;
5397: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5398: my $reply='';
5399: for (1..100) {
5400: sleep 2;
5401: if (-e $replyfile.'.end') {
5402: if (open(my $fh,$replyfile)) {
5403: $reply = join('',<$fh>);
5404: close($fh);
5405: } else { return 'error: reply_file_error'; }
5406: return &unescape($reply);
5407: }
5408: }
5409: return 'timeout:'.$queryid;
5410: }
5411:
5412: sub courselog_query {
5413: #
5414: # possible filters:
5415: # url: url or symb
5416: # username
5417: # domain
5418: # action: view, submit, grade
5419: # start: timestamp
5420: # end: timestamp
5421: #
5422: my (%filters)=@_;
5423: unless ($env{'request.course.id'}) { return 'no_course'; }
5424: if ($filters{'url'}) {
5425: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5426: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5427: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5428: }
5429: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5430: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5431: return &log_query($cname,$cdom,'courselog',%filters);
5432: }
5433:
5434: sub userlog_query {
5435: #
5436: # possible filters:
5437: # action: log check role
5438: # start: timestamp
5439: # end: timestamp
5440: #
5441: my ($uname,$udom,%filters)=@_;
5442: return &log_query($uname,$udom,'userlog',%filters);
5443: }
5444:
5445: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5446:
5447: sub auto_run {
5448: my ($cnum,$cdom) = @_;
5449: my $response = 0;
5450: my $settings;
5451: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5452: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5453: $settings = $domconfig{'autoenroll'};
5454: if ($settings->{'run'} eq '1') {
5455: $response = 1;
5456: }
5457: } else {
5458: my $homeserver;
5459: if (&is_course($cdom,$cnum)) {
5460: $homeserver = &homeserver($cnum,$cdom);
5461: } else {
5462: $homeserver = &domain($cdom,'primary');
5463: }
5464: if ($homeserver ne 'no_host') {
5465: $response = &reply('autorun:'.$cdom,$homeserver);
5466: }
5467: }
5468: return $response;
5469: }
5470:
5471: sub auto_get_sections {
5472: my ($cnum,$cdom,$inst_coursecode) = @_;
5473: my $homeserver = &homeserver($cnum,$cdom);
5474: my @secs = ();
5475: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5476: unless ($response eq 'refused') {
5477: @secs = split(/:/,$response);
5478: }
5479: return @secs;
5480: }
5481:
5482: sub auto_new_course {
5483: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5484: my $homeserver = &homeserver($cnum,$cdom);
5485: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5486: return $response;
5487: }
5488:
5489: sub auto_validate_courseID {
5490: my ($cnum,$cdom,$inst_course_id) = @_;
5491: my $homeserver = &homeserver($cnum,$cdom);
5492: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5493: return $response;
5494: }
5495:
5496: sub auto_create_password {
5497: my ($cnum,$cdom,$authparam,$udom) = @_;
5498: my ($homeserver,$response);
5499: my $create_passwd = 0;
5500: my $authchk = '';
5501: if ($udom =~ /^$match_domain$/) {
5502: $homeserver = &domain($udom,'primary');
5503: }
5504: if ($homeserver eq '') {
5505: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5506: $homeserver = &homeserver($cnum,$cdom);
5507: }
5508: }
5509: if ($homeserver eq '') {
5510: $authchk = 'nodomain';
5511: } else {
5512: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5513: if ($response eq 'refused') {
5514: $authchk = 'refused';
5515: } else {
5516: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5517: }
5518: }
5519: return ($authparam,$create_passwd,$authchk);
5520: }
5521:
5522: sub auto_photo_permission {
5523: my ($cnum,$cdom,$students) = @_;
5524: my $homeserver = &homeserver($cnum,$cdom);
5525: my ($outcome,$perm_reqd,$conditions) =
5526: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5527: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5528: return (undef,undef);
5529: }
5530: return ($outcome,$perm_reqd,$conditions);
5531: }
5532:
5533: sub auto_checkphotos {
5534: my ($uname,$udom,$pid) = @_;
5535: my $homeserver = &homeserver($uname,$udom);
5536: my ($result,$resulttype);
5537: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5538: &escape($uname).':'.&escape($pid),
5539: $homeserver));
5540: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5541: return (undef,undef);
5542: }
5543: if ($outcome) {
5544: ($result,$resulttype) = split(/:/,$outcome);
5545: }
5546: return ($result,$resulttype);
5547: }
5548:
5549: sub auto_photochoice {
5550: my ($cnum,$cdom) = @_;
5551: my $homeserver = &homeserver($cnum,$cdom);
5552: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5553: &escape($cdom),
5554: $homeserver)));
5555: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5556: return (undef,undef);
5557: }
5558: return ($update,$comment);
5559: }
5560:
5561: sub auto_photoupdate {
5562: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5563: my $homeserver = &homeserver($cnum,$dom);
5564: my $host=&hostname($homeserver);
5565: my $cmd = '';
5566: my $maxtries = 1;
5567: foreach my $affiliate (keys(%{$affiliatesref})) {
5568: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5569: }
5570: $cmd =~ s/%%$//;
5571: $cmd = &escape($cmd);
5572: my $query = 'institutionalphotos';
5573: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5574: unless ($queryid=~/^\Q$host\E\_/) {
5575: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5576: return 'error: '.$queryid;
5577: }
5578: my $reply = &get_query_reply($queryid);
5579: my $tries = 1;
5580: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5581: $reply = &get_query_reply($queryid);
5582: $tries ++;
5583: }
5584: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5585: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5586: } else {
5587: my @responses = split(/:/,$reply);
5588: my $outcome = shift(@responses);
5589: foreach my $item (@responses) {
5590: my ($key,$value) = split(/=/,$item);
5591: $$photo{$key} = $value;
5592: }
5593: return $outcome;
5594: }
5595: return 'error';
5596: }
5597:
5598: sub auto_instcode_format {
5599: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5600: $cat_order) = @_;
5601: my $courses = '';
5602: my @homeservers;
5603: if ($caller eq 'global') {
5604: my %servers = &get_servers($codedom,'library');
5605: foreach my $tryserver (keys(%servers)) {
5606: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5607: push(@homeservers,$tryserver);
5608: }
5609: }
5610: } else {
5611: push(@homeservers,&homeserver($caller,$codedom));
5612: }
5613: foreach my $code (keys(%{$instcodes})) {
5614: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5615: }
5616: chop($courses);
5617: my $ok_response = 0;
5618: my $response;
5619: while (@homeservers > 0 && $ok_response == 0) {
5620: my $server = shift(@homeservers);
5621: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5622: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5623: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5624: split(/:/,$response);
5625: %{$codes} = (%{$codes},&str2hash($codes_str));
5626: push(@{$codetitles},&str2array($codetitles_str));
5627: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5628: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5629: $ok_response = 1;
5630: }
5631: }
5632: if ($ok_response) {
5633: return 'ok';
5634: } else {
5635: return $response;
5636: }
5637: }
5638:
5639: sub auto_instcode_defaults {
5640: my ($domain,$returnhash,$code_order) = @_;
5641: my @homeservers;
5642:
5643: my %servers = &get_servers($domain,'library');
5644: foreach my $tryserver (keys(%servers)) {
5645: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5646: push(@homeservers,$tryserver);
5647: }
5648: }
5649:
5650: my $response;
5651: foreach my $server (@homeservers) {
5652: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5653: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5654:
5655: foreach my $pair (split(/\&/,$response)) {
5656: my ($name,$value)=split(/\=/,$pair);
5657: if ($name eq 'code_order') {
5658: @{$code_order} = split(/\&/,&unescape($value));
5659: } else {
5660: $returnhash->{&unescape($name)}=&unescape($value);
5661: }
5662: }
5663: return 'ok';
5664: }
5665:
5666: return $response;
5667: }
5668:
5669: sub auto_validate_class_sec {
5670: my ($cdom,$cnum,$owners,$inst_class) = @_;
5671: my $homeserver = &homeserver($cnum,$cdom);
5672: my $ownerlist;
5673: if (ref($owners) eq 'ARRAY') {
5674: $ownerlist = join(',',@{$owners});
5675: } else {
5676: $ownerlist = $owners;
5677: }
5678: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5679: &escape($ownerlist).':'.$cdom,$homeserver);
5680: return $response;
5681: }
5682:
5683: # ------------------------------------------------------- Course Group routines
5684:
5685: sub get_coursegroups {
5686: my ($cdom,$cnum,$group,$namespace) = @_;
5687: return(&dump($namespace,$cdom,$cnum,$group));
5688: }
5689:
5690: sub modify_coursegroup {
5691: my ($cdom,$cnum,$groupsettings) = @_;
5692: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5693: }
5694:
5695: sub toggle_coursegroup_status {
5696: my ($cdom,$cnum,$group,$action) = @_;
5697: my ($from_namespace,$to_namespace);
5698: if ($action eq 'delete') {
5699: $from_namespace = 'coursegroups';
5700: $to_namespace = 'deleted_groups';
5701: } else {
5702: $from_namespace = 'deleted_groups';
5703: $to_namespace = 'coursegroups';
5704: }
5705: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5706: if (my $tmp = &error(%curr_group)) {
5707: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5708: return ('read error',$tmp);
5709: } else {
5710: my %savedsettings = %curr_group;
5711: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5712: my $deloutcome;
5713: if ($result eq 'ok') {
5714: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5715: } else {
5716: return ('write error',$result);
5717: }
5718: if ($deloutcome eq 'ok') {
5719: return 'ok';
5720: } else {
5721: return ('delete error',$deloutcome);
5722: }
5723: }
5724: }
5725:
5726: sub modify_group_roles {
5727: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5728: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5729: my $role = 'gr/'.&escape($userprivs);
5730: my ($uname,$udom) = split(/:/,$user);
5731: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5732: if ($result eq 'ok') {
5733: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5734: }
5735: return $result;
5736: }
5737:
5738: sub modify_coursegroup_membership {
5739: my ($cdom,$cnum,$membership) = @_;
5740: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5741: return $result;
5742: }
5743:
5744: sub get_active_groups {
5745: my ($udom,$uname,$cdom,$cnum) = @_;
5746: my $now = time;
5747: my %groups = ();
5748: foreach my $key (keys(%env)) {
5749: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5750: my ($start,$end) = split(/\./,$env{$key});
5751: if (($end!=0) && ($end<$now)) { next; }
5752: if (($start!=0) && ($start>$now)) { next; }
5753: if ($1 eq $cdom && $2 eq $cnum) {
5754: $groups{$3} = $env{$key} ;
5755: }
5756: }
5757: }
5758: return %groups;
5759: }
5760:
5761: sub get_group_membership {
5762: my ($cdom,$cnum,$group) = @_;
5763: return(&dump('groupmembership',$cdom,$cnum,$group));
5764: }
5765:
5766: sub get_users_groups {
5767: my ($udom,$uname,$courseid) = @_;
5768: my @usersgroups;
5769: my $cachetime=1800;
5770:
5771: my $hashid="$udom:$uname:$courseid";
5772: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5773: if (defined($cached)) {
5774: @usersgroups = split(/:/,$grouplist);
5775: } else {
5776: $grouplist = '';
5777: my $courseurl = &courseid_to_courseurl($courseid);
5778: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5779: my $access_end = $env{'course.'.$courseid.
5780: '.default_enrollment_end_date'};
5781: my $now = time;
5782: foreach my $key (keys(%roleshash)) {
5783: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5784: my $group = $1;
5785: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5786: my $start = $2;
5787: my $end = $1;
5788: if ($start == -1) { next; } # deleted from group
5789: if (($start!=0) && ($start>$now)) { next; }
5790: if (($end!=0) && ($end<$now)) {
5791: if ($access_end && $access_end < $now) {
5792: if ($access_end - $end < 86400) {
5793: push(@usersgroups,$group);
5794: }
5795: }
5796: next;
5797: }
5798: push(@usersgroups,$group);
5799: }
5800: }
5801: }
5802: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5803: $grouplist = join(':',@usersgroups);
5804: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5805: }
5806: return @usersgroups;
5807: }
5808:
5809: sub devalidate_getgroups_cache {
5810: my ($udom,$uname,$cdom,$cnum)=@_;
5811: my $courseid = $cdom.'_'.$cnum;
5812:
5813: my $hashid="$udom:$uname:$courseid";
5814: &devalidate_cache_new('getgroups',$hashid);
5815: }
5816:
5817: # ------------------------------------------------------------------ Plain Text
5818:
5819: sub plaintext {
5820: my ($short,$type,$cid,$forcedefault) = @_;
5821: if ($short =~ /^cr/) {
5822: return (split('/',$short))[-1];
5823: }
5824: if (!defined($cid)) {
5825: $cid = $env{'request.course.id'};
5826: }
5827: if (defined($cid) && ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '')) {
5828: unless ($forcedefault) {
5829: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
5830: &Apache::lonlocal::mt_escape(\$roletext);
5831: return &Apache::lonlocal::mt($roletext);
5832: }
5833: }
5834: my %rolenames = (
5835: Course => 'std',
5836: Group => 'alt1',
5837: );
5838: if (defined($type) &&
5839: defined($rolenames{$type}) &&
5840: defined($prp{$short}{$rolenames{$type}})) {
5841: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5842: } else {
5843: return &Apache::lonlocal::mt($prp{$short}{'std'});
5844: }
5845: }
5846:
5847: # ----------------------------------------------------------------- Assign Role
5848:
5849: sub assignrole {
5850: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5851: $context)=@_;
5852: my $mrole;
5853: if ($role =~ /^cr\//) {
5854: my $cwosec=$url;
5855: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5856: unless (&allowed('ccr',$cwosec)) {
5857: &logthis('Refused custom assignrole: '.
5858: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5859: $env{'user.name'}.' at '.$env{'user.domain'});
5860: return 'refused';
5861: }
5862: $mrole='cr';
5863: } elsif ($role =~ /^gr\//) {
5864: my $cwogrp=$url;
5865: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5866: unless (&allowed('mdg',$cwogrp)) {
5867: &logthis('Refused group assignrole: '.
5868: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5869: $env{'user.name'}.' at '.$env{'user.domain'});
5870: return 'refused';
5871: }
5872: $mrole='gr';
5873: } else {
5874: my $cwosec=$url;
5875: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5876: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5877: my $refused;
5878: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5879: if (!(&allowed('c'.$role,$url))) {
5880: $refused = 1;
5881: }
5882: } else {
5883: $refused = 1;
5884: }
5885: if ($refused) {
5886: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5887: $refused = '';
5888: } else {
5889: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5890: ' '.$role.' '.$end.' '.$start.' by '.
5891: $env{'user.name'}.' at '.$env{'user.domain'});
5892: return 'refused';
5893: }
5894: }
5895: }
5896: $mrole=$role;
5897: }
5898: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5899: "$udom:$uname:$url".'_'."$mrole=$role";
5900: if ($end) { $command.='_'.$end; }
5901: if ($start) {
5902: if ($end) {
5903: $command.='_'.$start;
5904: } else {
5905: $command.='_0_'.$start;
5906: }
5907: }
5908: my $origstart = $start;
5909: my $origend = $end;
5910: my $delflag;
5911: # actually delete
5912: if ($deleteflag) {
5913: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5914: # modify command to delete the role
5915: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5916: "$udom:$uname:$url".'_'."$mrole";
5917: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5918: # set start and finish to negative values for userrolelog
5919: $start=-1;
5920: $end=-1;
5921: $delflag = 1;
5922: }
5923: }
5924: # send command
5925: my $answer=&reply($command,&homeserver($uname,$udom));
5926: # log new user role if status is ok
5927: if ($answer eq 'ok') {
5928: &userrolelog($role,$uname,$udom,$url,$start,$end);
5929: # for course roles, perform group memberships changes triggered by role change.
5930: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
5931: unless ($role =~ /^gr/) {
5932: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5933: $origstart,$selfenroll,$context);
5934: }
5935: }
5936: return $answer;
5937: }
5938:
5939: # -------------------------------------------------- Modify user authentication
5940: # Overrides without validation
5941:
5942: sub modifyuserauth {
5943: my ($udom,$uname,$umode,$upass)=@_;
5944: my $uhome=&homeserver($uname,$udom);
5945: unless (&allowed('mau',$udom)) { return 'refused'; }
5946: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5947: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5948: ' in domain '.$env{'request.role.domain'});
5949: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5950: &escape($upass),$uhome);
5951: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5952: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5953: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5954: &log($udom,,$uname,$uhome,
5955: 'Authentication changed by '.$env{'user.domain'}.', '.
5956: $env{'user.name'}.', '.$umode.
5957: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5958: unless ($reply eq 'ok') {
5959: &logthis('Authentication mode error: '.$reply);
5960: return 'error: '.$reply;
5961: }
5962: return 'ok';
5963: }
5964:
5965: # --------------------------------------------------------------- Modify a user
5966:
5967: sub modifyuser {
5968: my ($udom, $uname, $uid,
5969: $umode, $upass, $first,
5970: $middle, $last, $gene,
5971: $forceid, $desiredhome, $email, $inststatus)=@_;
5972: $udom= &LONCAPA::clean_domain($udom);
5973: $uname=&LONCAPA::clean_username($uname);
5974: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5975: $umode.', '.$first.', '.$middle.', '.
5976: $last.', '.$gene.'(forceid: '.$forceid.')'.
5977: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5978: ' desiredhome not specified').
5979: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5980: ' in domain '.$env{'request.role.domain'});
5981: my $uhome=&homeserver($uname,$udom,'true');
5982: # ----------------------------------------------------------------- Create User
5983: if (($uhome eq 'no_host') &&
5984: (($umode && $upass) || ($umode eq 'localauth'))) {
5985: my $unhome='';
5986: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5987: $unhome = $desiredhome;
5988: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5989: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5990: } else { # load balancing routine for determining $unhome
5991: my $loadm=10000000;
5992: my %servers = &get_servers($udom,'library');
5993: foreach my $tryserver (keys(%servers)) {
5994: my $answer=reply('load',$tryserver);
5995: if (($answer=~/\d+/) && ($answer<$loadm)) {
5996: $loadm=$answer;
5997: $unhome=$tryserver;
5998: }
5999: }
6000: }
6001: if (($unhome eq '') || ($unhome eq 'no_host')) {
6002: return 'error: unable to find a home server for '.$uname.
6003: ' in domain '.$udom;
6004: }
6005: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6006: &escape($upass),$unhome);
6007: unless ($reply eq 'ok') {
6008: return 'error: '.$reply;
6009: }
6010: $uhome=&homeserver($uname,$udom,'true');
6011: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6012: return 'error: unable verify users home machine.';
6013: }
6014: } # End of creation of new user
6015: # ---------------------------------------------------------------------- Add ID
6016: if ($uid) {
6017: $uid=~tr/A-Z/a-z/;
6018: my %uidhash=&idrget($udom,$uname);
6019: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6020: && (!$forceid)) {
6021: unless ($uid eq $uidhash{$uname}) {
6022: return 'error: user id "'.$uid.'" does not match '.
6023: 'current user id "'.$uidhash{$uname}.'".';
6024: }
6025: } else {
6026: &idput($udom,($uname => $uid));
6027: }
6028: }
6029: # -------------------------------------------------------------- Add names, etc
6030: my @tmp=&get('environment',
6031: ['firstname','middlename','lastname','generation','id',
6032: 'permanentemail','inststatus'],
6033: $udom,$uname);
6034: my %names;
6035: if ($tmp[0] =~ m/^error:.*/) {
6036: %names=();
6037: } else {
6038: %names = @tmp;
6039: }
6040: #
6041: # Make sure to not trash student environment if instructor does not bother
6042: # to supply name and email information
6043: #
6044: if ($first) { $names{'firstname'} = $first; }
6045: if (defined($middle)) { $names{'middlename'} = $middle; }
6046: if ($last) { $names{'lastname'} = $last; }
6047: if (defined($gene)) { $names{'generation'} = $gene; }
6048: if ($email) {
6049: $email=~s/[^\w\@\.\-\,]//gs;
6050: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6051: }
6052: if ($uid) { $names{'id'} = $uid; }
6053: if (defined($inststatus)) {
6054: $names{'inststatus'} = '';
6055: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6056: if (ref($usertypes) eq 'HASH') {
6057: my @okstatuses;
6058: foreach my $item (split(/:/,$inststatus)) {
6059: if (defined($usertypes->{$item})) {
6060: push(@okstatuses,$item);
6061: }
6062: }
6063: if (@okstatuses) {
6064: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6065: }
6066: }
6067: }
6068: my $reply = &put('environment', \%names, $udom,$uname);
6069: if ($reply ne 'ok') { return 'error: '.$reply; }
6070: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6071: &devalidate_cache_new('namescache',$uname.':'.$udom);
6072: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
6073: $umode.', '.$first.', '.$middle.', '.
6074: $last.', '.$gene.', '.$email.', '.$inststatus;
6075: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6076: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6077: } else {
6078: $logmsg .= ' during self creation';
6079: }
6080: &logthis($logmsg);
6081: return 'ok';
6082: }
6083:
6084: # -------------------------------------------------------------- Modify student
6085:
6086: sub modifystudent {
6087: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6088: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6089: $selfenroll,$context,$inststatus)=@_;
6090: if (!$cid) {
6091: unless ($cid=$env{'request.course.id'}) {
6092: return 'not_in_class';
6093: }
6094: }
6095: # --------------------------------------------------------------- Make the user
6096: my $reply=&modifyuser
6097: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6098: $desiredhome,$email,$inststatus);
6099: unless ($reply eq 'ok') { return $reply; }
6100: # This will cause &modify_student_enrollment to get the uid from the
6101: # students environment
6102: $uid = undef if (!$forceid);
6103: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6104: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6105: return $reply;
6106: }
6107:
6108: sub modify_student_enrollment {
6109: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6110: my ($cdom,$cnum,$chome);
6111: if (!$cid) {
6112: unless ($cid=$env{'request.course.id'}) {
6113: return 'not_in_class';
6114: }
6115: $cdom=$env{'course.'.$cid.'.domain'};
6116: $cnum=$env{'course.'.$cid.'.num'};
6117: } else {
6118: ($cdom,$cnum)=split(/_/,$cid);
6119: }
6120: $chome=$env{'course.'.$cid.'.home'};
6121: if (!$chome) {
6122: $chome=&homeserver($cnum,$cdom);
6123: }
6124: if (!$chome) { return 'unknown_course'; }
6125: # Make sure the user exists
6126: my $uhome=&homeserver($uname,$udom);
6127: if (($uhome eq '') || ($uhome eq 'no_host')) {
6128: return 'error: no such user';
6129: }
6130: # Get student data if we were not given enough information
6131: if (!defined($first) || $first eq '' ||
6132: !defined($last) || $last eq '' ||
6133: !defined($uid) || $uid eq '' ||
6134: !defined($middle) || $middle eq '' ||
6135: !defined($gene) || $gene eq '') {
6136: # They did not supply us with enough data to enroll the student, so
6137: # we need to pick up more information.
6138: my %tmp = &get('environment',
6139: ['firstname','middlename','lastname', 'generation','id']
6140: ,$udom,$uname);
6141:
6142: #foreach my $key (keys(%tmp)) {
6143: # &logthis("key $key = ".$tmp{$key});
6144: #}
6145: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6146: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6147: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6148: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6149: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6150: }
6151: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6152: my $reply=cput('classlist',
6153: {"$uname:$udom" =>
6154: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6155: $cdom,$cnum);
6156: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6157: return 'error: '.$reply;
6158: } else {
6159: &devalidate_getsection_cache($udom,$uname,$cid);
6160: }
6161: # Add student role to user
6162: my $uurl='/'.$cid;
6163: $uurl=~s/\_/\//g;
6164: if ($usec) {
6165: $uurl.='/'.$usec;
6166: }
6167: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6168: }
6169:
6170: sub format_name {
6171: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6172: my $name;
6173: if ($first ne 'lastname') {
6174: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6175: } else {
6176: if ($lastname=~/\S/) {
6177: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6178: $name=~s/\s+,/,/;
6179: } else {
6180: $name.= $firstname.' '.$middlename.' '.$generation;
6181: }
6182: }
6183: $name=~s/^\s+//;
6184: $name=~s/\s+$//;
6185: $name=~s/\s+/ /g;
6186: return $name;
6187: }
6188:
6189: # ------------------------------------------------- Write to course preferences
6190:
6191: sub writecoursepref {
6192: my ($courseid,%prefs)=@_;
6193: $courseid=~s/^\///;
6194: $courseid=~s/\_/\//g;
6195: my ($cdomain,$cnum)=split(/\//,$courseid);
6196: my $chome=homeserver($cnum,$cdomain);
6197: if (($chome eq '') || ($chome eq 'no_host')) {
6198: return 'error: no such course';
6199: }
6200: my $cstring='';
6201: foreach my $pref (keys(%prefs)) {
6202: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6203: }
6204: $cstring=~s/\&$//;
6205: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6206: }
6207:
6208: # ---------------------------------------------------------- Make/modify course
6209:
6210: sub createcourse {
6211: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
6212: $course_owner,$crstype)=@_;
6213: $url=&declutter($url);
6214: my $cid='';
6215: unless (&allowed('ccc',$udom)) {
6216: return 'refused';
6217: }
6218: # ------------------------------------------------------------------- Create ID
6219: my $uname=int(1+rand(9)).
6220: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6221: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6222: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6223: # ----------------------------------------------- Make sure that does not exist
6224: my $uhome=&homeserver($uname,$udom,'true');
6225: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6226: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
6227: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6228: $uhome=&homeserver($uname,$udom,'true');
6229: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6230: return 'error: unable to generate unique course-ID';
6231: }
6232: }
6233: # ------------------------------------------------ Check supplied server name
6234: $course_server = $env{'user.homeserver'} if (! defined($course_server));
6235: if (! &is_library($course_server)) {
6236: return 'error:bad server name '.$course_server;
6237: }
6238: # ------------------------------------------------------------- Make the course
6239: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
6240: $course_server);
6241: unless ($reply eq 'ok') { return 'error: '.$reply; }
6242: $uhome=&homeserver($uname,$udom,'true');
6243: if (($uhome eq '') || ($uhome eq 'no_host')) {
6244: return 'error: no such course';
6245: }
6246: # ----------------------------------------------------------------- Course made
6247: # log existence
6248: my $newcourse = {
6249: $udom.'_'.$uname => {
6250: description => $description,
6251: inst_code => $inst_code,
6252: owner => $course_owner,
6253: type => $crstype,
6254: },
6255: };
6256: &courseidput($udom,$newcourse,$uhome,'notime');
6257: # set toplevel url
6258: my $topurl=$url;
6259: unless ($nonstandard) {
6260: # ------------------------------------------ For standard courses, make top url
6261: my $mapurl=&clutter($url);
6262: if ($mapurl eq '/res/') { $mapurl=''; }
6263: $env{'form.initmap'}=(<<ENDINITMAP);
6264: <map>
6265: <resource id="1" type="start"></resource>
6266: <resource id="2" src="$mapurl"></resource>
6267: <resource id="3" type="finish"></resource>
6268: <link index="1" from="1" to="2"></link>
6269: <link index="2" from="2" to="3"></link>
6270: </map>
6271: ENDINITMAP
6272: $topurl=&declutter(
6273: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
6274: );
6275: }
6276: # ----------------------------------------------------------- Write preferences
6277: &writecoursepref($udom.'_'.$uname,
6278: ('description' => $description,
6279: 'url' => $topurl));
6280: return '/'.$udom.'/'.$uname;
6281: }
6282:
6283: sub is_course {
6284: my ($cdom,$cnum) = @_;
6285: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
6286: undef,'.');
6287: if (exists($courses{$cdom.'_'.$cnum})) {
6288: return 1;
6289: }
6290: return 0;
6291: }
6292:
6293: # ---------------------------------------------------------- Assign Custom Role
6294:
6295: sub assigncustomrole {
6296: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
6297: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
6298: $end,$start,$deleteflag,$selfenroll,$context);
6299: }
6300:
6301: # ----------------------------------------------------------------- Revoke Role
6302:
6303: sub revokerole {
6304: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
6305: my $now=time;
6306: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
6307: }
6308:
6309: # ---------------------------------------------------------- Revoke Custom Role
6310:
6311: sub revokecustomrole {
6312: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
6313: my $now=time;
6314: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
6315: $deleteflag,$selfenroll,$context);
6316: }
6317:
6318: # ------------------------------------------------------------ Disk usage
6319: sub diskusage {
6320: my ($udom,$uname,$directorypath,$getpropath)=@_;
6321: $directorypath =~ s/\/$//;
6322: my $listing=&reply('du2:'.&escape($directorypath).':'
6323: .&escape($getpropath).':'.&escape($uname).':'
6324: .&escape($udom),homeserver($uname,$udom));
6325: if ($listing eq 'unknown_cmd') {
6326: if ($getpropath) {
6327: $directorypath = &propath($udom,$uname).'/'.$directorypath;
6328: }
6329: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
6330: }
6331: return $listing;
6332: }
6333:
6334: sub is_locked {
6335: my ($file_name, $domain, $user) = @_;
6336: my @check;
6337: my $is_locked;
6338: push @check, $file_name;
6339: my %locked = &get('file_permissions',\@check,
6340: $env{'user.domain'},$env{'user.name'});
6341: my ($tmp)=keys(%locked);
6342: if ($tmp=~/^error:/) { undef(%locked); }
6343:
6344: if (ref($locked{$file_name}) eq 'ARRAY') {
6345: $is_locked = 'false';
6346: foreach my $entry (@{$locked{$file_name}}) {
6347: if (ref($entry) eq 'ARRAY') {
6348: $is_locked = 'true';
6349: last;
6350: }
6351: }
6352: } else {
6353: $is_locked = 'false';
6354: }
6355: }
6356:
6357: sub declutter_portfile {
6358: my ($file) = @_;
6359: $file =~ s{^(/portfolio/|portfolio/)}{/};
6360: return $file;
6361: }
6362:
6363: # ------------------------------------------------------------- Mark as Read Only
6364:
6365: sub mark_as_readonly {
6366: my ($domain,$user,$files,$what) = @_;
6367: my %current_permissions = &dump('file_permissions',$domain,$user);
6368: my ($tmp)=keys(%current_permissions);
6369: if ($tmp=~/^error:/) { undef(%current_permissions); }
6370: foreach my $file (@{$files}) {
6371: $file = &declutter_portfile($file);
6372: push(@{$current_permissions{$file}},$what);
6373: }
6374: &put('file_permissions',\%current_permissions,$domain,$user);
6375: return;
6376: }
6377:
6378: # ------------------------------------------------------------Save Selected Files
6379:
6380: sub save_selected_files {
6381: my ($user, $path, @files) = @_;
6382: my $filename = $user."savedfiles";
6383: my @other_files = &files_not_in_path($user, $path);
6384: open (OUT, '>'.$tmpdir.$filename);
6385: foreach my $file (@files) {
6386: print (OUT $env{'form.currentpath'}.$file."\n");
6387: }
6388: foreach my $file (@other_files) {
6389: print (OUT $file."\n");
6390: }
6391: close (OUT);
6392: return 'ok';
6393: }
6394:
6395: sub clear_selected_files {
6396: my ($user) = @_;
6397: my $filename = $user."savedfiles";
6398: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6399: print (OUT undef);
6400: close (OUT);
6401: return ("ok");
6402: }
6403:
6404: sub files_in_path {
6405: my ($user, $path) = @_;
6406: my $filename = $user."savedfiles";
6407: my %return_files;
6408: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6409: while (my $line_in = <IN>) {
6410: chomp ($line_in);
6411: my @paths_and_file = split (m!/!, $line_in);
6412: my $file_part = pop (@paths_and_file);
6413: my $path_part = join ('/', @paths_and_file);
6414: $path_part.='/';
6415: my $path_and_file = $path_part.$file_part;
6416: if ($path_part eq $path) {
6417: $return_files{$file_part}= 'selected';
6418: }
6419: }
6420: close (IN);
6421: return (\%return_files);
6422: }
6423:
6424: # called in portfolio select mode, to show files selected NOT in current directory
6425: sub files_not_in_path {
6426: my ($user, $path) = @_;
6427: my $filename = $user."savedfiles";
6428: my @return_files;
6429: my $path_part;
6430: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6431: while (my $line = <IN>) {
6432: #ok, I know it's clunky, but I want it to work
6433: my @paths_and_file = split(m|/|, $line);
6434: my $file_part = pop(@paths_and_file);
6435: chomp($file_part);
6436: my $path_part = join('/', @paths_and_file);
6437: $path_part .= '/';
6438: my $path_and_file = $path_part.$file_part;
6439: if ($path_part ne $path) {
6440: push(@return_files, ($path_and_file));
6441: }
6442: }
6443: close(OUT);
6444: return (@return_files);
6445: }
6446:
6447: #----------------------------------------------Get portfolio file permissions
6448:
6449: sub get_portfile_permissions {
6450: my ($domain,$user) = @_;
6451: my %current_permissions = &dump('file_permissions',$domain,$user);
6452: my ($tmp)=keys(%current_permissions);
6453: if ($tmp=~/^error:/) { undef(%current_permissions); }
6454: return \%current_permissions;
6455: }
6456:
6457: #---------------------------------------------Get portfolio file access controls
6458:
6459: sub get_access_controls {
6460: my ($current_permissions,$group,$file) = @_;
6461: my %access;
6462: my $real_file = $file;
6463: $file =~ s/\.meta$//;
6464: if (defined($file)) {
6465: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6466: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6467: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6468: }
6469: }
6470: } else {
6471: foreach my $key (keys(%{$current_permissions})) {
6472: if ($key =~ /\0accesscontrol$/) {
6473: if (defined($group)) {
6474: if ($key !~ m-^\Q$group\E/-) {
6475: next;
6476: }
6477: }
6478: my ($fullpath) = split(/\0/,$key);
6479: if (ref($$current_permissions{$key}) eq 'HASH') {
6480: foreach my $control (keys(%{$$current_permissions{$key}})) {
6481: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6482: }
6483: }
6484: }
6485: }
6486: }
6487: return %access;
6488: }
6489:
6490: sub modify_access_controls {
6491: my ($file_name,$changes,$domain,$user)=@_;
6492: my ($outcome,$deloutcome);
6493: my %store_permissions;
6494: my %new_values;
6495: my %new_control;
6496: my %translation;
6497: my @deletions = ();
6498: my $now = time;
6499: if (exists($$changes{'activate'})) {
6500: if (ref($$changes{'activate'}) eq 'HASH') {
6501: my @newitems = sort(keys(%{$$changes{'activate'}}));
6502: my $numnew = scalar(@newitems);
6503: for (my $i=0; $i<$numnew; $i++) {
6504: my $newkey = $newitems[$i];
6505: my $newid = &Apache::loncommon::get_cgi_id();
6506: if ($newkey =~ /^\d+:/) {
6507: $newkey =~ s/^(\d+)/$newid/;
6508: $translation{$1} = $newid;
6509: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6510: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6511: $translation{$1} = $newid;
6512: }
6513: $new_values{$file_name."\0".$newkey} =
6514: $$changes{'activate'}{$newitems[$i]};
6515: $new_control{$newkey} = $now;
6516: }
6517: }
6518: }
6519: my %todelete;
6520: my %changed_items;
6521: foreach my $action ('delete','update') {
6522: if (exists($$changes{$action})) {
6523: if (ref($$changes{$action}) eq 'HASH') {
6524: foreach my $key (keys(%{$$changes{$action}})) {
6525: my ($itemnum) = ($key =~ /^([^:]+):/);
6526: if ($action eq 'delete') {
6527: $todelete{$itemnum} = 1;
6528: } else {
6529: $changed_items{$itemnum} = $key;
6530: }
6531: }
6532: }
6533: }
6534: }
6535: # get lock on access controls for file.
6536: my $lockhash = {
6537: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6538: ':'.$env{'user.domain'},
6539: };
6540: my $tries = 0;
6541: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6542:
6543: while (($gotlock ne 'ok') && $tries <3) {
6544: $tries ++;
6545: sleep 1;
6546: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6547: }
6548: if ($gotlock eq 'ok') {
6549: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6550: my ($tmp)=keys(%curr_permissions);
6551: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6552: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6553: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6554: if (ref($curr_controls) eq 'HASH') {
6555: foreach my $control_item (keys(%{$curr_controls})) {
6556: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6557: if (defined($todelete{$itemnum})) {
6558: push(@deletions,$file_name."\0".$control_item);
6559: } else {
6560: if (defined($changed_items{$itemnum})) {
6561: $new_control{$changed_items{$itemnum}} = $now;
6562: push(@deletions,$file_name."\0".$control_item);
6563: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6564: } else {
6565: $new_control{$control_item} = $$curr_controls{$control_item};
6566: }
6567: }
6568: }
6569: }
6570: }
6571: my ($group);
6572: if (&is_course($domain,$user)) {
6573: ($group,my $file) = split(/\//,$file_name,2);
6574: }
6575: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6576: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6577: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6578: # remove lock
6579: my @del_lock = ($file_name."\0".'locked_access_records');
6580: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6581: my $sqlresult =
6582: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
6583: $group);
6584: } else {
6585: $outcome = "error: could not obtain lockfile\n";
6586: }
6587: return ($outcome,$deloutcome,\%new_values,\%translation);
6588: }
6589:
6590: sub make_public_indefinitely {
6591: my ($requrl) = @_;
6592: my $now = time;
6593: my $action = 'activate';
6594: my $aclnum = 0;
6595: if (&is_portfolio_url($requrl)) {
6596: my (undef,$udom,$unum,$file_name,$group) =
6597: &parse_portfolio_url($requrl);
6598: my $current_perms = &get_portfile_permissions($udom,$unum);
6599: my %access_controls = &get_access_controls($current_perms,
6600: $group,$file_name);
6601: foreach my $key (keys(%{$access_controls{$file_name}})) {
6602: my ($num,$scope,$end,$start) =
6603: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6604: if ($scope eq 'public') {
6605: if ($start <= $now && $end == 0) {
6606: $action = 'none';
6607: } else {
6608: $action = 'update';
6609: $aclnum = $num;
6610: }
6611: last;
6612: }
6613: }
6614: if ($action eq 'none') {
6615: return 'ok';
6616: } else {
6617: my %changes;
6618: my $newend = 0;
6619: my $newstart = $now;
6620: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6621: $changes{$action}{$newkey} = {
6622: type => 'public',
6623: time => {
6624: start => $newstart,
6625: end => $newend,
6626: },
6627: };
6628: my ($outcome,$deloutcome,$new_values,$translation) =
6629: &modify_access_controls($file_name,\%changes,$udom,$unum);
6630: return $outcome;
6631: }
6632: } else {
6633: return 'invalid';
6634: }
6635: }
6636:
6637: #------------------------------------------------------Get Marked as Read Only
6638:
6639: sub get_marked_as_readonly {
6640: my ($domain,$user,$what,$group) = @_;
6641: my $current_permissions = &get_portfile_permissions($domain,$user);
6642: my @readonly_files;
6643: my $cmp1=$what;
6644: if (ref($what)) { $cmp1=join('',@{$what}) };
6645: while (my ($file_name,$value) = each(%{$current_permissions})) {
6646: if (defined($group)) {
6647: if ($file_name !~ m-^\Q$group\E/-) {
6648: next;
6649: }
6650: }
6651: if (ref($value) eq "ARRAY"){
6652: foreach my $stored_what (@{$value}) {
6653: my $cmp2=$stored_what;
6654: if (ref($stored_what) eq 'ARRAY') {
6655: $cmp2=join('',@{$stored_what});
6656: }
6657: if ($cmp1 eq $cmp2) {
6658: push(@readonly_files, $file_name);
6659: last;
6660: } elsif (!defined($what)) {
6661: push(@readonly_files, $file_name);
6662: last;
6663: }
6664: }
6665: }
6666: }
6667: return @readonly_files;
6668: }
6669: #-----------------------------------------------------------Get Marked as Read Only Hash
6670:
6671: sub get_marked_as_readonly_hash {
6672: my ($current_permissions,$group,$what) = @_;
6673: my %readonly_files;
6674: while (my ($file_name,$value) = each(%{$current_permissions})) {
6675: if (defined($group)) {
6676: if ($file_name !~ m-^\Q$group\E/-) {
6677: next;
6678: }
6679: }
6680: if (ref($value) eq "ARRAY"){
6681: foreach my $stored_what (@{$value}) {
6682: if (ref($stored_what) eq 'ARRAY') {
6683: foreach my $lock_descriptor(@{$stored_what}) {
6684: if ($lock_descriptor eq 'graded') {
6685: $readonly_files{$file_name} = 'graded';
6686: } elsif ($lock_descriptor eq 'handback') {
6687: $readonly_files{$file_name} = 'handback';
6688: } else {
6689: if (!exists($readonly_files{$file_name})) {
6690: $readonly_files{$file_name} = 'locked';
6691: }
6692: }
6693: }
6694: }
6695: }
6696: }
6697: }
6698: return %readonly_files;
6699: }
6700: # ------------------------------------------------------------ Unmark as Read Only
6701:
6702: sub unmark_as_readonly {
6703: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6704: # for portfolio submissions, $what contains [$symb,$crsid]
6705: my ($domain,$user,$what,$file_name,$group) = @_;
6706: $file_name = &declutter_portfile($file_name);
6707: my $symb_crs = $what;
6708: if (ref($what)) { $symb_crs=join('',@$what); }
6709: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6710: my ($tmp)=keys(%current_permissions);
6711: if ($tmp=~/^error:/) { undef(%current_permissions); }
6712: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6713: foreach my $file (@readonly_files) {
6714: my $clean_file = &declutter_portfile($file);
6715: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6716: my $current_locks = $current_permissions{$file};
6717: my @new_locks;
6718: my @del_keys;
6719: if (ref($current_locks) eq "ARRAY"){
6720: foreach my $locker (@{$current_locks}) {
6721: my $compare=$locker;
6722: if (ref($locker) eq 'ARRAY') {
6723: $compare=join('',@{$locker});
6724: if ($compare ne $symb_crs) {
6725: push(@new_locks, $locker);
6726: }
6727: }
6728: }
6729: if (scalar(@new_locks) > 0) {
6730: $current_permissions{$file} = \@new_locks;
6731: } else {
6732: push(@del_keys, $file);
6733: &del('file_permissions',\@del_keys, $domain, $user);
6734: delete($current_permissions{$file});
6735: }
6736: }
6737: }
6738: &put('file_permissions',\%current_permissions,$domain,$user);
6739: return;
6740: }
6741:
6742: # ------------------------------------------------------------ Directory lister
6743:
6744: sub dirlist {
6745: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6746: $uri=~s/^\///;
6747: $uri=~s/\/$//;
6748: my ($udom, $uname);
6749: if ($getuserdir) {
6750: $udom = $userdomain;
6751: $uname = $username;
6752: } else {
6753: (undef,$udom,$uname)=split(/\//,$uri);
6754: if(defined($userdomain)) {
6755: $udom = $userdomain;
6756: }
6757: if(defined($username)) {
6758: $uname = $username;
6759: }
6760: }
6761: my ($dirRoot,$listing,@listing_results);
6762:
6763: $dirRoot = $perlvar{'lonDocRoot'};
6764: if (defined($getpropath)) {
6765: $dirRoot = &propath($udom,$uname);
6766: $dirRoot =~ s/\/$//;
6767: } elsif (defined($getuserdir)) {
6768: my $subdir=$uname.'__';
6769: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6770: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6771: ."/$udom/$subdir/$uname";
6772: } elsif (defined($alternateRoot)) {
6773: $dirRoot = $alternateRoot;
6774: }
6775:
6776: if($udom) {
6777: if($uname) {
6778: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6779: .$getuserdir.':'.&escape($dirRoot)
6780: .':'.&escape($uname).':'.&escape($udom),
6781: &homeserver($uname,$udom));
6782: if ($listing eq 'unknown_cmd') {
6783: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6784: &homeserver($uname,$udom));
6785: } else {
6786: @listing_results = map { &unescape($_); } split(/:/,$listing);
6787: }
6788: if ($listing eq 'unknown_cmd') {
6789: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6790: &homeserver($uname,$udom));
6791: @listing_results = split(/:/,$listing);
6792: } else {
6793: @listing_results = map { &unescape($_); } split(/:/,$listing);
6794: }
6795: return @listing_results;
6796: } elsif(!$alternateRoot) {
6797: my %allusers;
6798: my %servers = &get_servers($udom,'library');
6799: foreach my $tryserver (keys(%servers)) {
6800: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6801: &escape($udom),$tryserver);
6802: if ($listing eq 'unknown_cmd') {
6803: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6804: $udom, $tryserver);
6805: } else {
6806: @listing_results = map { &unescape($_); } split(/:/,$listing);
6807: }
6808: if ($listing eq 'unknown_cmd') {
6809: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6810: $udom, $tryserver);
6811: @listing_results = split(/:/,$listing);
6812: } else {
6813: @listing_results =
6814: map { &unescape($_); } split(/:/,$listing);
6815: }
6816: if ($listing_results[0] ne 'no_such_dir' &&
6817: $listing_results[0] ne 'empty' &&
6818: $listing_results[0] ne 'con_lost') {
6819: foreach my $line (@listing_results) {
6820: my ($entry) = split(/&/,$line,2);
6821: $allusers{$entry} = 1;
6822: }
6823: }
6824: }
6825: my $alluserstr='';
6826: foreach my $user (sort(keys(%allusers))) {
6827: $alluserstr.=$user.'&user:';
6828: }
6829: $alluserstr=~s/:$//;
6830: return split(/:/,$alluserstr);
6831: } else {
6832: return ('missing user name');
6833: }
6834: } elsif(!defined($getpropath)) {
6835: my @all_domains = sort(&all_domains());
6836: foreach my $domain (@all_domains) {
6837: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6838: }
6839: return @all_domains;
6840: } else {
6841: return ('missing domain');
6842: }
6843: }
6844:
6845: # --------------------------------------------- GetFileTimestamp
6846: # This function utilizes dirlist and returns the date stamp for
6847: # when it was last modified. It will also return an error of -1
6848: # if an error occurs
6849:
6850: sub GetFileTimestamp {
6851: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6852: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6853: $studentName = &LONCAPA::clean_username($studentName);
6854: my ($fileStat) =
6855: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6856: undef,$getuserdir);
6857: my @stats = split('&', $fileStat);
6858: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6859: # @stats contains first the filename, then the stat output
6860: return $stats[10]; # so this is 10 instead of 9.
6861: } else {
6862: return -1;
6863: }
6864: }
6865:
6866: sub stat_file {
6867: my ($uri) = @_;
6868: $uri = &clutter_with_no_wrapper($uri);
6869:
6870: my ($udom,$uname,$file);
6871: if ($uri =~ m-^/(uploaded|editupload)/-) {
6872: ($udom,$uname,$file) =
6873: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6874: $file = 'userfiles/'.$file;
6875: }
6876: if ($uri =~ m-^/res/-) {
6877: ($udom,$uname) =
6878: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6879: $file = $uri;
6880: }
6881:
6882: if (!$udom || !$uname || !$file) {
6883: # unable to handle the uri
6884: return ();
6885: }
6886: my $getpropath;
6887: if ($file =~ /^userfiles\//) {
6888: $getpropath = 1;
6889: }
6890: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6891: my @stats = split('&', $result);
6892:
6893: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6894: shift(@stats); #filename is first
6895: return @stats;
6896: }
6897: return ();
6898: }
6899:
6900: # -------------------------------------------------------- Value of a Condition
6901:
6902: # gets the value of a specific preevaluated condition
6903: # stored in the string $env{user.state.<cid>}
6904: # or looks up a condition reference in the bighash and if if hasn't
6905: # already been evaluated recurses into docondval to get the value of
6906: # the condition, then memoizing it to
6907: # $env{user.state.<cid>.<condition>}
6908: sub directcondval {
6909: my $number=shift;
6910: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6911: &Apache::lonuserstate::evalstate();
6912: }
6913: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6914: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6915: } elsif ($number =~ /^_/) {
6916: my $sub_condition;
6917: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6918: &GDBM_READER(),0640)) {
6919: $sub_condition=$bighash{'conditions'.$number};
6920: untie(%bighash);
6921: }
6922: my $value = &docondval($sub_condition);
6923: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6924: return $value;
6925: }
6926: if ($env{'user.state.'.$env{'request.course.id'}}) {
6927: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6928: } else {
6929: return 2;
6930: }
6931: }
6932:
6933: # get the collection of conditions for this resource
6934: sub condval {
6935: my $condidx=shift;
6936: my $allpathcond='';
6937: foreach my $cond (split(/\|/,$condidx)) {
6938: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6939: $allpathcond.=
6940: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6941: }
6942: }
6943: $allpathcond=~s/\|$//;
6944: return &docondval($allpathcond);
6945: }
6946:
6947: #evaluates an expression of conditions
6948: sub docondval {
6949: my ($allpathcond) = @_;
6950: my $result=0;
6951: if ($env{'request.course.id'}
6952: && defined($allpathcond)) {
6953: my $operand='|';
6954: my @stack;
6955: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6956: if ($chunk eq '(') {
6957: push @stack,($operand,$result);
6958: } elsif ($chunk eq ')') {
6959: my $before=pop @stack;
6960: if (pop @stack eq '&') {
6961: $result=$result>$before?$before:$result;
6962: } else {
6963: $result=$result>$before?$result:$before;
6964: }
6965: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6966: $operand=$chunk;
6967: } else {
6968: my $new=directcondval($chunk);
6969: if ($operand eq '&') {
6970: $result=$result>$new?$new:$result;
6971: } else {
6972: $result=$result>$new?$result:$new;
6973: }
6974: }
6975: }
6976: }
6977: return $result;
6978: }
6979:
6980: # ---------------------------------------------------- Devalidate courseresdata
6981:
6982: sub devalidatecourseresdata {
6983: my ($coursenum,$coursedomain)=@_;
6984: my $hashid=$coursenum.':'.$coursedomain;
6985: &devalidate_cache_new('courseres',$hashid);
6986: }
6987:
6988:
6989: # --------------------------------------------------- Course Resourcedata Query
6990: #
6991: # Parameters:
6992: # $coursenum - Number of the course.
6993: # $coursedomain - Domain at which the course was created.
6994: # Returns:
6995: # A hash of the course parameters along (I think) with timestamps
6996: # and version info.
6997:
6998: sub get_courseresdata {
6999: my ($coursenum,$coursedomain)=@_;
7000: my $coursehom=&homeserver($coursenum,$coursedomain);
7001: my $hashid=$coursenum.':'.$coursedomain;
7002: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7003: my %dumpreply;
7004: unless (defined($cached)) {
7005: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7006: $result=\%dumpreply;
7007: my ($tmp) = keys(%dumpreply);
7008: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7009: &do_cache_new('courseres',$hashid,$result,600);
7010: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7011: return $tmp;
7012: } elsif ($tmp =~ /^(error)/) {
7013: $result=undef;
7014: &do_cache_new('courseres',$hashid,$result,600);
7015: }
7016: }
7017: return $result;
7018: }
7019:
7020: sub devalidateuserresdata {
7021: my ($uname,$udom)=@_;
7022: my $hashid="$udom:$uname";
7023: &devalidate_cache_new('userres',$hashid);
7024: }
7025:
7026: sub get_userresdata {
7027: my ($uname,$udom)=@_;
7028: #most student don\'t have any data set, check if there is some data
7029: if (&EXT_cache_status($udom,$uname)) { return undef; }
7030:
7031: my $hashid="$udom:$uname";
7032: my ($result,$cached)=&is_cached_new('userres',$hashid);
7033: if (!defined($cached)) {
7034: my %resourcedata=&dump('resourcedata',$udom,$uname);
7035: $result=\%resourcedata;
7036: &do_cache_new('userres',$hashid,$result,600);
7037: }
7038: my ($tmp)=keys(%$result);
7039: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7040: return $result;
7041: }
7042: #error 2 occurs when the .db doesn't exist
7043: if ($tmp!~/error: 2 /) {
7044: &logthis("<font color=\"blue\">WARNING:".
7045: " Trying to get resource data for ".
7046: $uname." at ".$udom.": ".
7047: $tmp."</font>");
7048: } elsif ($tmp=~/error: 2 /) {
7049: #&EXT_cache_set($udom,$uname);
7050: &do_cache_new('userres',$hashid,undef,600);
7051: undef($tmp); # not really an error so don't send it back
7052: }
7053: return $tmp;
7054: }
7055: #----------------------------------------------- resdata - return resource data
7056: # Purpose:
7057: # Return resource data for either users or for a course.
7058: # Parameters:
7059: # $name - Course/user name.
7060: # $domain - Name of the domain the user/course is registered on.
7061: # $type - Type of thing $name is (must be 'course' or 'user'
7062: # @which - Array of names of resources desired.
7063: # Returns:
7064: # The value of the first reasource in @which that is found in the
7065: # resource hash.
7066: # Exceptional Conditions:
7067: # If the $type passed in is not valid (not the string 'course' or
7068: # 'user', an undefined reference is returned.
7069: # If none of the resources are found, an undef is returned
7070: sub resdata {
7071: my ($name,$domain,$type,@which)=@_;
7072: my $result;
7073: if ($type eq 'course') {
7074: $result=&get_courseresdata($name,$domain);
7075: } elsif ($type eq 'user') {
7076: $result=&get_userresdata($name,$domain);
7077: }
7078: if (!ref($result)) { return $result; }
7079: foreach my $item (@which) {
7080: if (defined($result->{$item->[0]})) {
7081: return [$result->{$item->[0]},$item->[1]];
7082: }
7083: }
7084: return undef;
7085: }
7086:
7087: #
7088: # EXT resource caching routines
7089: #
7090:
7091: sub clear_EXT_cache_status {
7092: &delenv('cache.EXT.');
7093: }
7094:
7095: sub EXT_cache_status {
7096: my ($target_domain,$target_user) = @_;
7097: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7098: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
7099: # We know already the user has no data
7100: return 1;
7101: } else {
7102: return 0;
7103: }
7104: }
7105:
7106: sub EXT_cache_set {
7107: my ($target_domain,$target_user) = @_;
7108: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7109: #&appenv({$cachename => time});
7110: }
7111:
7112: # --------------------------------------------------------- Value of a Variable
7113: sub EXT {
7114:
7115: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
7116: unless ($varname) { return ''; }
7117: #get real user name/domain, courseid and symb
7118: my $courseid;
7119: my $publicuser;
7120: if ($symbparm) {
7121: $symbparm=&get_symb_from_alias($symbparm);
7122: }
7123: if (!($uname && $udom)) {
7124: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
7125: if (!$symbparm) { $symbparm=$cursymb; }
7126: } else {
7127: $courseid=$env{'request.course.id'};
7128: }
7129: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
7130: my $rest;
7131: if (defined($therest[0])) {
7132: $rest=join('.',@therest);
7133: } else {
7134: $rest='';
7135: }
7136:
7137: my $qualifierrest=$qualifier;
7138: if ($rest) { $qualifierrest.='.'.$rest; }
7139: my $spacequalifierrest=$space;
7140: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
7141: if ($realm eq 'user') {
7142: # --------------------------------------------------------------- user.resource
7143: if ($space eq 'resource') {
7144: if ( (defined($Apache::lonhomework::parsing_a_problem)
7145: || defined($Apache::lonhomework::parsing_a_task))
7146: &&
7147: ($symbparm eq &symbread()) ) {
7148: # if we are in the middle of processing the resource the
7149: # get the value we are planning on committing
7150: if (defined($Apache::lonhomework::results{$qualifierrest})) {
7151: return $Apache::lonhomework::results{$qualifierrest};
7152: } else {
7153: return $Apache::lonhomework::history{$qualifierrest};
7154: }
7155: } else {
7156: my %restored;
7157: if ($publicuser || $env{'request.state'} eq 'construct') {
7158: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
7159: } else {
7160: %restored=&restore($symbparm,$courseid,$udom,$uname);
7161: }
7162: return $restored{$qualifierrest};
7163: }
7164: # ----------------------------------------------------------------- user.access
7165: } elsif ($space eq 'access') {
7166: # FIXME - not supporting calls for a specific user
7167: return &allowed($qualifier,$rest);
7168: # ------------------------------------------ user.preferences, user.environment
7169: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
7170: if (($uname eq $env{'user.name'}) &&
7171: ($udom eq $env{'user.domain'})) {
7172: return $env{join('.',('environment',$qualifierrest))};
7173: } else {
7174: my %returnhash;
7175: if (!$publicuser) {
7176: %returnhash=&userenvironment($udom,$uname,
7177: $qualifierrest);
7178: }
7179: return $returnhash{$qualifierrest};
7180: }
7181: # ----------------------------------------------------------------- user.course
7182: } elsif ($space eq 'course') {
7183: # FIXME - not supporting calls for a specific user
7184: return $env{join('.',('request.course',$qualifier))};
7185: # ------------------------------------------------------------------- user.role
7186: } elsif ($space eq 'role') {
7187: # FIXME - not supporting calls for a specific user
7188: my ($role,$where)=split(/\./,$env{'request.role'});
7189: if ($qualifier eq 'value') {
7190: return $role;
7191: } elsif ($qualifier eq 'extent') {
7192: return $where;
7193: }
7194: # ----------------------------------------------------------------- user.domain
7195: } elsif ($space eq 'domain') {
7196: return $udom;
7197: # ------------------------------------------------------------------- user.name
7198: } elsif ($space eq 'name') {
7199: return $uname;
7200: # ---------------------------------------------------- Any other user namespace
7201: } else {
7202: my %reply;
7203: if (!$publicuser) {
7204: %reply=&get($space,[$qualifierrest],$udom,$uname);
7205: }
7206: return $reply{$qualifierrest};
7207: }
7208: } elsif ($realm eq 'query') {
7209: # ---------------------------------------------- pull stuff out of query string
7210: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
7211: [$spacequalifierrest]);
7212: return $env{'form.'.$spacequalifierrest};
7213: } elsif ($realm eq 'request') {
7214: # ------------------------------------------------------------- request.browser
7215: if ($space eq 'browser') {
7216: if ($qualifier eq 'textremote') {
7217: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
7218: return 1;
7219: } else {
7220: return 0;
7221: }
7222: } else {
7223: return $env{'browser.'.$qualifier};
7224: }
7225: # ------------------------------------------------------------ request.filename
7226: } else {
7227: return $env{'request.'.$spacequalifierrest};
7228: }
7229: } elsif ($realm eq 'course') {
7230: # ---------------------------------------------------------- course.description
7231: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
7232: } elsif ($realm eq 'resource') {
7233:
7234: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
7235: if (!$symbparm) { $symbparm=&symbread(); }
7236: }
7237:
7238: if ($space eq 'title') {
7239: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
7240: return &gettitle($symbparm);
7241: }
7242:
7243: if ($space eq 'map') {
7244: my ($map) = &decode_symb($symbparm);
7245: return &symbread($map);
7246: }
7247: if ($space eq 'filename') {
7248: if ($symbparm) {
7249: return &clutter((&decode_symb($symbparm))[2]);
7250: }
7251: return &hreflocation('',$env{'request.filename'});
7252: }
7253:
7254: my ($section, $group, @groups);
7255: my ($courselevelm,$courselevel);
7256: if ($symbparm && defined($courseid) &&
7257: $courseid eq $env{'request.course.id'}) {
7258:
7259: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
7260:
7261: # ----------------------------------------------------- Cascading lookup scheme
7262: my $symbp=$symbparm;
7263: my $mapp=&deversion((&decode_symb($symbp))[0]);
7264:
7265: my $symbparm=$symbp.'.'.$spacequalifierrest;
7266: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
7267:
7268: if (($env{'user.name'} eq $uname) &&
7269: ($env{'user.domain'} eq $udom)) {
7270: $section=$env{'request.course.sec'};
7271: @groups = split(/:/,$env{'request.course.groups'});
7272: @groups=&sort_course_groups($courseid,@groups);
7273: } else {
7274: if (! defined($usection)) {
7275: $section=&getsection($udom,$uname,$courseid);
7276: } else {
7277: $section = $usection;
7278: }
7279: @groups = &get_users_groups($udom,$uname,$courseid);
7280: }
7281:
7282: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
7283: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
7284: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
7285:
7286: $courselevel=$courseid.'.'.$spacequalifierrest;
7287: my $courselevelr=$courseid.'.'.$symbparm;
7288: $courselevelm=$courseid.'.'.$mapparm;
7289:
7290: # ----------------------------------------------------------- first, check user
7291:
7292: my $userreply=&resdata($uname,$udom,'user',
7293: ([$courselevelr,'resource'],
7294: [$courselevelm,'map' ],
7295: [$courselevel, 'course' ]));
7296: if (defined($userreply)) { return &get_reply($userreply); }
7297:
7298: # ------------------------------------------------ second, check some of course
7299: my $coursereply;
7300: if (@groups > 0) {
7301: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
7302: $mapparm,$spacequalifierrest);
7303: if (defined($coursereply)) { return &get_reply($coursereply); }
7304: }
7305:
7306: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7307: $env{'course.'.$courseid.'.domain'},
7308: 'course',
7309: ([$seclevelr, 'resource'],
7310: [$seclevelm, 'map' ],
7311: [$seclevel, 'course' ],
7312: [$courselevelr,'resource']));
7313: if (defined($coursereply)) { return &get_reply($coursereply); }
7314:
7315: # ------------------------------------------------------ third, check map parms
7316: my %parmhash=();
7317: my $thisparm='';
7318: if (tie(%parmhash,'GDBM_File',
7319: $env{'request.course.fn'}.'_parms.db',
7320: &GDBM_READER(),0640)) {
7321: $thisparm=$parmhash{$symbparm};
7322: untie(%parmhash);
7323: }
7324: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
7325: }
7326: # ------------------------------------------ fourth, look in resource metadata
7327:
7328: $spacequalifierrest=~s/\./\_/;
7329: my $filename;
7330: if (!$symbparm) { $symbparm=&symbread(); }
7331: if ($symbparm) {
7332: $filename=(&decode_symb($symbparm))[2];
7333: } else {
7334: $filename=$env{'request.filename'};
7335: }
7336: my $metadata=&metadata($filename,$spacequalifierrest);
7337: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7338: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
7339: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7340:
7341: # ---------------------------------------------- fourth, look in rest of course
7342: if ($symbparm && defined($courseid) &&
7343: $courseid eq $env{'request.course.id'}) {
7344: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7345: $env{'course.'.$courseid.'.domain'},
7346: 'course',
7347: ([$courselevelm,'map' ],
7348: [$courselevel, 'course']));
7349: if (defined($coursereply)) { return &get_reply($coursereply); }
7350: }
7351: # ------------------------------------------------------------------ Cascade up
7352: unless ($space eq '0') {
7353: my @parts=split(/_/,$space);
7354: my $id=pop(@parts);
7355: my $part=join('_',@parts);
7356: if ($part eq '') { $part='0'; }
7357: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
7358: $symbparm,$udom,$uname,$section,1);
7359: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
7360: }
7361: if ($recurse) { return undef; }
7362: my $pack_def=&packages_tab_default($filename,$varname);
7363: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
7364: # ---------------------------------------------------- Any other user namespace
7365: } elsif ($realm eq 'environment') {
7366: # ----------------------------------------------------------------- environment
7367: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
7368: return $env{'environment.'.$spacequalifierrest};
7369: } else {
7370: if ($uname eq 'anonymous' && $udom eq '') {
7371: return '';
7372: }
7373: my %returnhash=&userenvironment($udom,$uname,
7374: $spacequalifierrest);
7375: return $returnhash{$spacequalifierrest};
7376: }
7377: } elsif ($realm eq 'system') {
7378: # ----------------------------------------------------------------- system.time
7379: if ($space eq 'time') {
7380: return time;
7381: }
7382: } elsif ($realm eq 'server') {
7383: # ----------------------------------------------------------------- system.time
7384: if ($space eq 'name') {
7385: return $ENV{'SERVER_NAME'};
7386: }
7387: }
7388: return '';
7389: }
7390:
7391: sub get_reply {
7392: my ($reply_value) = @_;
7393: if (ref($reply_value) eq 'ARRAY') {
7394: if (wantarray) {
7395: return @$reply_value;
7396: }
7397: return $reply_value->[0];
7398: } else {
7399: return $reply_value;
7400: }
7401: }
7402:
7403: sub check_group_parms {
7404: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
7405: my @groupitems = ();
7406: my $resultitem;
7407: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
7408: foreach my $group (@{$groups}) {
7409: foreach my $level (@levels) {
7410: my $item = $courseid.'.['.$group.'].'.$level->[0];
7411: push(@groupitems,[$item,$level->[1]]);
7412: }
7413: }
7414: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
7415: $env{'course.'.$courseid.'.domain'},
7416: 'course',@groupitems);
7417: return $coursereply;
7418: }
7419:
7420: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
7421: my ($courseid,@groups) = @_;
7422: @groups = sort(@groups);
7423: return @groups;
7424: }
7425:
7426: sub packages_tab_default {
7427: my ($uri,$varname)=@_;
7428: my (undef,$part,$name)=split(/\./,$varname);
7429:
7430: my (@extension,@specifics,$do_default);
7431: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7432: my ($pack_type,$pack_part)=split(/_/,$package,2);
7433: if ($pack_type eq 'default') {
7434: $do_default=1;
7435: } elsif ($pack_type eq 'extension') {
7436: push(@extension,[$package,$pack_type,$pack_part]);
7437: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7438: # only look at packages defaults for packages that this id is
7439: push(@specifics,[$package,$pack_type,$pack_part]);
7440: }
7441: }
7442: # first look for a package that matches the requested part id
7443: foreach my $package (@specifics) {
7444: my (undef,$pack_type,$pack_part)=@{$package};
7445: next if ($pack_part ne $part);
7446: if (defined($packagetab{"$pack_type&$name&default"})) {
7447: return $packagetab{"$pack_type&$name&default"};
7448: }
7449: }
7450: # look for any possible matching non extension_ package
7451: foreach my $package (@specifics) {
7452: my (undef,$pack_type,$pack_part)=@{$package};
7453: if (defined($packagetab{"$pack_type&$name&default"})) {
7454: return $packagetab{"$pack_type&$name&default"};
7455: }
7456: if ($pack_type eq 'part') { $pack_part='0'; }
7457: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7458: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7459: }
7460: }
7461: # look for any posible extension_ match
7462: foreach my $package (@extension) {
7463: my ($package,$pack_type)=@{$package};
7464: if (defined($packagetab{"$pack_type&$name&default"})) {
7465: return $packagetab{"$pack_type&$name&default"};
7466: }
7467: if (defined($packagetab{$package."&$name&default"})) {
7468: return $packagetab{$package."&$name&default"};
7469: }
7470: }
7471: # look for a global default setting
7472: if ($do_default && defined($packagetab{"default&$name&default"})) {
7473: return $packagetab{"default&$name&default"};
7474: }
7475: return undef;
7476: }
7477:
7478: sub add_prefix_and_part {
7479: my ($prefix,$part)=@_;
7480: my $keyroot;
7481: if (defined($prefix) && $prefix !~ /^__/) {
7482: # prefix that has a part already
7483: $keyroot=$prefix;
7484: } elsif (defined($prefix)) {
7485: # prefix that is missing a part
7486: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7487: } else {
7488: # no prefix at all
7489: if (defined($part)) { $keyroot='_'.$part; }
7490: }
7491: return $keyroot;
7492: }
7493:
7494: # ---------------------------------------------------------------- Get metadata
7495:
7496: my %metaentry;
7497: sub metadata {
7498: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7499: $uri=&declutter($uri);
7500: # if it is a non metadata possible uri return quickly
7501: if (($uri eq '') ||
7502: (($uri =~ m|^/*adm/|) &&
7503: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7504: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7505: return undef;
7506: }
7507: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7508: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7509: return undef;
7510: }
7511: my $filename=$uri;
7512: $uri=~s/\.meta$//;
7513: #
7514: # Is the metadata already cached?
7515: # Look at timestamp of caching
7516: # Everything is cached by the main uri, libraries are never directly cached
7517: #
7518: if (!defined($liburi)) {
7519: my ($result,$cached)=&is_cached_new('meta',$uri);
7520: if (defined($cached)) { return $result->{':'.$what}; }
7521: }
7522: {
7523: #
7524: # Is this a recursive call for a library?
7525: #
7526: # if (! exists($metacache{$uri})) {
7527: # $metacache{$uri}={};
7528: # }
7529: my $cachetime = 60*60;
7530: if ($liburi) {
7531: $liburi=&declutter($liburi);
7532: $filename=$liburi;
7533: } else {
7534: &devalidate_cache_new('meta',$uri);
7535: undef(%metaentry);
7536: }
7537: my %metathesekeys=();
7538: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7539: my $metastring;
7540: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7541: my $which = &hreflocation('','/'.($liburi || $uri));
7542: $metastring =
7543: &Apache::lonnet::ssi_body($which,
7544: ('grade_target' => 'meta'));
7545: $cachetime = 1; # only want this cached in the child not long term
7546: } elsif ($uri !~ m -^(editupload)/-) {
7547: my $file=&filelocation('',&clutter($filename));
7548: #push(@{$metaentry{$uri.'.file'}},$file);
7549: $metastring=&getfile($file);
7550: }
7551: my $parser=HTML::LCParser->new(\$metastring);
7552: my $token;
7553: undef %metathesekeys;
7554: while ($token=$parser->get_token) {
7555: if ($token->[0] eq 'S') {
7556: if (defined($token->[2]->{'package'})) {
7557: #
7558: # This is a package - get package info
7559: #
7560: my $package=$token->[2]->{'package'};
7561: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7562: if (defined($token->[2]->{'id'})) {
7563: $keyroot.='_'.$token->[2]->{'id'};
7564: }
7565: if ($metaentry{':packages'}) {
7566: $metaentry{':packages'}.=','.$package.$keyroot;
7567: } else {
7568: $metaentry{':packages'}=$package.$keyroot;
7569: }
7570: foreach my $pack_entry (keys(%packagetab)) {
7571: my $part=$keyroot;
7572: $part=~s/^\_//;
7573: if ($pack_entry=~/^\Q$package\E\&/ ||
7574: $pack_entry=~/^\Q$package\E_0\&/) {
7575: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7576: # ignore package.tab specified default values
7577: # here &package_tab_default() will fetch those
7578: if ($subp eq 'default') { next; }
7579: my $value=$packagetab{$pack_entry};
7580: my $unikey;
7581: if ($pack =~ /_0$/) {
7582: $unikey='parameter_0_'.$name;
7583: $part=0;
7584: } else {
7585: $unikey='parameter'.$keyroot.'_'.$name;
7586: }
7587: if ($subp eq 'display') {
7588: $value.=' [Part: '.$part.']';
7589: }
7590: $metaentry{':'.$unikey.'.part'}=$part;
7591: $metathesekeys{$unikey}=1;
7592: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7593: $metaentry{':'.$unikey.'.'.$subp}=$value;
7594: }
7595: if (defined($metaentry{':'.$unikey.'.default'})) {
7596: $metaentry{':'.$unikey}=
7597: $metaentry{':'.$unikey.'.default'};
7598: }
7599: }
7600: }
7601: } else {
7602: #
7603: # This is not a package - some other kind of start tag
7604: #
7605: my $entry=$token->[1];
7606: my $unikey;
7607: if ($entry eq 'import') {
7608: $unikey='';
7609: } else {
7610: $unikey=$entry;
7611: }
7612: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7613:
7614: if (defined($token->[2]->{'id'})) {
7615: $unikey.='_'.$token->[2]->{'id'};
7616: }
7617:
7618: if ($entry eq 'import') {
7619: #
7620: # Importing a library here
7621: #
7622: if ($depthcount<20) {
7623: my $location=$parser->get_text('/import');
7624: my $dir=$filename;
7625: $dir=~s|[^/]*$||;
7626: $location=&filelocation($dir,$location);
7627: my $metadata =
7628: &metadata($uri,'keys', $location,$unikey,
7629: $depthcount+1);
7630: foreach my $meta (split(',',$metadata)) {
7631: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7632: $metathesekeys{$meta}=1;
7633: }
7634: }
7635: } else {
7636:
7637: if (defined($token->[2]->{'name'})) {
7638: $unikey.='_'.$token->[2]->{'name'};
7639: }
7640: $metathesekeys{$unikey}=1;
7641: foreach my $param (@{$token->[3]}) {
7642: $metaentry{':'.$unikey.'.'.$param} =
7643: $token->[2]->{$param};
7644: }
7645: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7646: my $default=$metaentry{':'.$unikey.'.default'};
7647: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7648: # only ws inside the tag, and not in default, so use default
7649: # as value
7650: $metaentry{':'.$unikey}=$default;
7651: } elsif ( $internaltext =~ /\S/ ) {
7652: # something interesting inside the tag
7653: $metaentry{':'.$unikey}=$internaltext;
7654: } else {
7655: # no interesting values, don't set a default
7656: }
7657: # end of not-a-package not-a-library import
7658: }
7659: # end of not-a-package start tag
7660: }
7661: # the next is the end of "start tag"
7662: }
7663: }
7664: my ($extension) = ($uri =~ /\.(\w+)$/);
7665: $extension = lc($extension);
7666: if ($extension eq 'htm') { $extension='html'; }
7667:
7668: foreach my $key (keys(%packagetab)) {
7669: #no specific packages #how's our extension
7670: if ($key!~/^extension_\Q$extension\E&/) { next; }
7671: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7672: \%metathesekeys);
7673: }
7674:
7675: if (!exists($metaentry{':packages'})
7676: || $packagetab{"import_defaults&extension_$extension"}) {
7677: foreach my $key (keys(%packagetab)) {
7678: #no specific packages well let's get default then
7679: if ($key!~/^default&/) { next; }
7680: &metadata_create_package_def($uri,$key,'default',
7681: \%metathesekeys);
7682: }
7683: }
7684: # are there custom rights to evaluate
7685: if ($metaentry{':copyright'} eq 'custom') {
7686:
7687: #
7688: # Importing a rights file here
7689: #
7690: unless ($depthcount) {
7691: my $location=$metaentry{':customdistributionfile'};
7692: my $dir=$filename;
7693: $dir=~s|[^/]*$||;
7694: $location=&filelocation($dir,$location);
7695: my $rights_metadata =
7696: &metadata($uri,'keys',$location,'_rights',
7697: $depthcount+1);
7698: foreach my $rights (split(',',$rights_metadata)) {
7699: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7700: $metathesekeys{$rights}=1;
7701: }
7702: }
7703: }
7704: # uniqifiy package listing
7705: my %seen;
7706: my @uniq_packages =
7707: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7708: $metaentry{':packages'} = join(',',@uniq_packages);
7709:
7710: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7711: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7712: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7713: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7714: # this is the end of "was not already recently cached
7715: }
7716: return $metaentry{':'.$what};
7717: }
7718:
7719: sub metadata_create_package_def {
7720: my ($uri,$key,$package,$metathesekeys)=@_;
7721: my ($pack,$name,$subp)=split(/\&/,$key);
7722: if ($subp eq 'default') { next; }
7723:
7724: if (defined($metaentry{':packages'})) {
7725: $metaentry{':packages'}.=','.$package;
7726: } else {
7727: $metaentry{':packages'}=$package;
7728: }
7729: my $value=$packagetab{$key};
7730: my $unikey;
7731: $unikey='parameter_0_'.$name;
7732: $metaentry{':'.$unikey.'.part'}=0;
7733: $$metathesekeys{$unikey}=1;
7734: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7735: $metaentry{':'.$unikey.'.'.$subp}=$value;
7736: }
7737: if (defined($metaentry{':'.$unikey.'.default'})) {
7738: $metaentry{':'.$unikey}=
7739: $metaentry{':'.$unikey.'.default'};
7740: }
7741: }
7742:
7743: sub metadata_generate_part0 {
7744: my ($metadata,$metacache,$uri) = @_;
7745: my %allnames;
7746: foreach my $metakey (keys(%$metadata)) {
7747: if ($metakey=~/^parameter\_(.*)/) {
7748: my $part=$$metacache{':'.$metakey.'.part'};
7749: my $name=$$metacache{':'.$metakey.'.name'};
7750: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7751: $allnames{$name}=$part;
7752: }
7753: }
7754: }
7755: foreach my $name (keys(%allnames)) {
7756: $$metadata{"parameter_0_$name"}=1;
7757: my $key=":parameter_0_$name";
7758: $$metacache{"$key.part"}='0';
7759: $$metacache{"$key.name"}=$name;
7760: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7761: $allnames{$name}.'_'.$name.
7762: '.type'};
7763: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7764: '.display'};
7765: my $expr='[Part: '.$allnames{$name}.']';
7766: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7767: $$metacache{"$key.display"}=$olddis;
7768: }
7769: }
7770:
7771: # ------------------------------------------------------ Devalidate title cache
7772:
7773: sub devalidate_title_cache {
7774: my ($url)=@_;
7775: if (!$env{'request.course.id'}) { return; }
7776: my $symb=&symbread($url);
7777: if (!$symb) { return; }
7778: my $key=$env{'request.course.id'}."\0".$symb;
7779: &devalidate_cache_new('title',$key);
7780: }
7781:
7782: # ------------------------------------------------- Get the title of a resource
7783:
7784: sub gettitle {
7785: my $urlsymb=shift;
7786: my $symb=&symbread($urlsymb);
7787: if ($symb) {
7788: my $key=$env{'request.course.id'}."\0".$symb;
7789: my ($result,$cached)=&is_cached_new('title',$key);
7790: if (defined($cached)) {
7791: return $result;
7792: }
7793: my ($map,$resid,$url)=&decode_symb($symb);
7794: my $title='';
7795: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7796: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7797: } else {
7798: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7799: &GDBM_READER(),0640)) {
7800: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7801: $title=$bighash{'title_'.$mapid.'.'.$resid};
7802: untie(%bighash);
7803: }
7804: }
7805: $title=~s/\&colon\;/\:/gs;
7806: if ($title) {
7807: return &do_cache_new('title',$key,$title,600);
7808: }
7809: $urlsymb=$url;
7810: }
7811: my $title=&metadata($urlsymb,'title');
7812: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7813: return $title;
7814: }
7815:
7816: sub get_slot {
7817: my ($which,$cnum,$cdom)=@_;
7818: if (!$cnum || !$cdom) {
7819: (undef,my $courseid)=&whichuser();
7820: $cdom=$env{'course.'.$courseid.'.domain'};
7821: $cnum=$env{'course.'.$courseid.'.num'};
7822: }
7823: my $key=join("\0",'slots',$cdom,$cnum,$which);
7824: my %slotinfo;
7825: if (exists($remembered{$key})) {
7826: $slotinfo{$which} = $remembered{$key};
7827: } else {
7828: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7829: &Apache::lonhomework::showhash(%slotinfo);
7830: my ($tmp)=keys(%slotinfo);
7831: if ($tmp=~/^error:/) { return (); }
7832: $remembered{$key} = $slotinfo{$which};
7833: }
7834: if (ref($slotinfo{$which}) eq 'HASH') {
7835: return %{$slotinfo{$which}};
7836: }
7837: return $slotinfo{$which};
7838: }
7839: # ------------------------------------------------- Update symbolic store links
7840:
7841: sub symblist {
7842: my ($mapname,%newhash)=@_;
7843: $mapname=&deversion(&declutter($mapname));
7844: my %hash;
7845: if (($env{'request.course.fn'}) && (%newhash)) {
7846: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7847: &GDBM_WRCREAT(),0640)) {
7848: foreach my $url (keys(%newhash)) {
7849: next if ($url eq 'last_known'
7850: && $env{'form.no_update_last_known'});
7851: $hash{declutter($url)}=&encode_symb($mapname,
7852: $newhash{$url}->[1],
7853: $newhash{$url}->[0]);
7854: }
7855: if (untie(%hash)) {
7856: return 'ok';
7857: }
7858: }
7859: }
7860: return 'error';
7861: }
7862:
7863: # --------------------------------------------------------------- Verify a symb
7864:
7865: sub symbverify {
7866: my ($symb,$thisurl)=@_;
7867: my $thisfn=$thisurl;
7868: $thisfn=&declutter($thisfn);
7869: # direct jump to resource in page or to a sequence - will construct own symbs
7870: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7871: # check URL part
7872: my ($map,$resid,$url)=&decode_symb($symb);
7873:
7874: unless ($url eq $thisfn) { return 0; }
7875:
7876: $symb=&symbclean($symb);
7877: $thisurl=&deversion($thisurl);
7878: $thisfn=&deversion($thisfn);
7879:
7880: my %bighash;
7881: my $okay=0;
7882:
7883: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7884: &GDBM_READER(),0640)) {
7885: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7886: unless ($ids) {
7887: $ids=$bighash{'ids_/'.$thisurl};
7888: }
7889: if ($ids) {
7890: # ------------------------------------------------------------------- Has ID(s)
7891: foreach my $id (split(/\,/,$ids)) {
7892: my ($mapid,$resid)=split(/\./,$id);
7893: if (
7894: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7895: eq $symb) {
7896: if (($env{'request.role.adv'}) ||
7897: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7898: $okay=1;
7899: }
7900: }
7901: }
7902: }
7903: untie(%bighash);
7904: }
7905: return $okay;
7906: }
7907:
7908: # --------------------------------------------------------------- Clean-up symb
7909:
7910: sub symbclean {
7911: my $symb=shift;
7912: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7913: # remove version from map
7914: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7915:
7916: # remove version from URL
7917: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7918:
7919: # remove wrapper
7920:
7921: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7922: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7923: return $symb;
7924: }
7925:
7926: # ---------------------------------------------- Split symb to find map and url
7927:
7928: sub encode_symb {
7929: my ($map,$resid,$url)=@_;
7930: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7931: }
7932:
7933: sub decode_symb {
7934: my $symb=shift;
7935: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7936: my ($map,$resid,$url)=split(/___/,$symb);
7937: return (&fixversion($map),$resid,&fixversion($url));
7938: }
7939:
7940: sub fixversion {
7941: my $fn=shift;
7942: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7943: my %bighash;
7944: my $uri=&clutter($fn);
7945: my $key=$env{'request.course.id'}.'_'.$uri;
7946: # is this cached?
7947: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7948: if (defined($cached)) { return $result; }
7949: # unfortunately not cached, or expired
7950: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7951: &GDBM_READER(),0640)) {
7952: if ($bighash{'version_'.$uri}) {
7953: my $version=$bighash{'version_'.$uri};
7954: unless (($version eq 'mostrecent') ||
7955: ($version==&getversion($uri))) {
7956: $uri=~s/\.(\w+)$/\.$version\.$1/;
7957: }
7958: }
7959: untie %bighash;
7960: }
7961: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7962: }
7963:
7964: sub deversion {
7965: my $url=shift;
7966: $url=~s/\.\d+\.(\w+)$/\.$1/;
7967: return $url;
7968: }
7969:
7970: # ------------------------------------------------------ Return symb list entry
7971:
7972: sub symbread {
7973: my ($thisfn,$donotrecurse)=@_;
7974: my $cache_str='request.symbread.cached.'.$thisfn;
7975: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7976: # no filename provided? try from environment
7977: unless ($thisfn) {
7978: if ($env{'request.symb'}) {
7979: return $env{$cache_str}=&symbclean($env{'request.symb'});
7980: }
7981: $thisfn=$env{'request.filename'};
7982: }
7983: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7984: # is that filename actually a symb? Verify, clean, and return
7985: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7986: if (&symbverify($thisfn,$1)) {
7987: return $env{$cache_str}=&symbclean($thisfn);
7988: }
7989: }
7990: $thisfn=declutter($thisfn);
7991: my %hash;
7992: my %bighash;
7993: my $syval='';
7994: if (($env{'request.course.fn'}) && ($thisfn)) {
7995: my $targetfn = $thisfn;
7996: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7997: $targetfn = 'adm/wrapper/'.$thisfn;
7998: }
7999: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8000: $targetfn=$1;
8001: }
8002: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8003: &GDBM_READER(),0640)) {
8004: $syval=$hash{$targetfn};
8005: untie(%hash);
8006: }
8007: # ---------------------------------------------------------- There was an entry
8008: if ($syval) {
8009: #unless ($syval=~/\_\d+$/) {
8010: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8011: #&appenv({'request.ambiguous' => $thisfn});
8012: #return $env{$cache_str}='';
8013: #}
8014: #$syval.=$1;
8015: #}
8016: } else {
8017: # ------------------------------------------------------- Was not in symb table
8018: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8019: &GDBM_READER(),0640)) {
8020: # ---------------------------------------------- Get ID(s) for current resource
8021: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8022: unless ($ids) {
8023: $ids=$bighash{'ids_/'.$thisfn};
8024: }
8025: unless ($ids) {
8026: # alias?
8027: $ids=$bighash{'mapalias_'.$thisfn};
8028: }
8029: if ($ids) {
8030: # ------------------------------------------------------------------- Has ID(s)
8031: my @possibilities=split(/\,/,$ids);
8032: if ($#possibilities==0) {
8033: # ----------------------------------------------- There is only one possibility
8034: my ($mapid,$resid)=split(/\./,$ids);
8035: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8036: $resid,$thisfn);
8037: } elsif (!$donotrecurse) {
8038: # ------------------------------------------ There is more than one possibility
8039: my $realpossible=0;
8040: foreach my $id (@possibilities) {
8041: my $file=$bighash{'src_'.$id};
8042: if (&allowed('bre',$file)) {
8043: my ($mapid,$resid)=split(/\./,$id);
8044: if ($bighash{'map_type_'.$mapid} ne 'page') {
8045: $realpossible++;
8046: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8047: $resid,$thisfn);
8048: }
8049: }
8050: }
8051: if ($realpossible!=1) { $syval=''; }
8052: } else {
8053: $syval='';
8054: }
8055: }
8056: untie(%bighash)
8057: }
8058: }
8059: if ($syval) {
8060: return $env{$cache_str}=$syval;
8061: }
8062: }
8063: &appenv({'request.ambiguous' => $thisfn});
8064: return $env{$cache_str}='';
8065: }
8066:
8067: # ---------------------------------------------------------- Return random seed
8068:
8069: sub numval {
8070: my $txt=shift;
8071: $txt=~tr/A-J/0-9/;
8072: $txt=~tr/a-j/0-9/;
8073: $txt=~tr/K-T/0-9/;
8074: $txt=~tr/k-t/0-9/;
8075: $txt=~tr/U-Z/0-5/;
8076: $txt=~tr/u-z/0-5/;
8077: $txt=~s/\D//g;
8078: if ($_64bit) { if ($txt > 2**32) { return -1; } }
8079: return int($txt);
8080: }
8081:
8082: sub numval2 {
8083: my $txt=shift;
8084: $txt=~tr/A-J/0-9/;
8085: $txt=~tr/a-j/0-9/;
8086: $txt=~tr/K-T/0-9/;
8087: $txt=~tr/k-t/0-9/;
8088: $txt=~tr/U-Z/0-5/;
8089: $txt=~tr/u-z/0-5/;
8090: $txt=~s/\D//g;
8091: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8092: my $total;
8093: foreach my $val (@txts) { $total+=$val; }
8094: if ($_64bit) { if ($total > 2**32) { return -1; } }
8095: return int($total);
8096: }
8097:
8098: sub numval3 {
8099: use integer;
8100: my $txt=shift;
8101: $txt=~tr/A-J/0-9/;
8102: $txt=~tr/a-j/0-9/;
8103: $txt=~tr/K-T/0-9/;
8104: $txt=~tr/k-t/0-9/;
8105: $txt=~tr/U-Z/0-5/;
8106: $txt=~tr/u-z/0-5/;
8107: $txt=~s/\D//g;
8108: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8109: my $total;
8110: foreach my $val (@txts) { $total+=$val; }
8111: if ($_64bit) { $total=(($total<<32)>>32); }
8112: return $total;
8113: }
8114:
8115: sub digest {
8116: my ($data)=@_;
8117: my $digest=&Digest::MD5::md5($data);
8118: my ($a,$b,$c,$d)=unpack("iiii",$digest);
8119: my ($e,$f);
8120: {
8121: use integer;
8122: $e=($a+$b);
8123: $f=($c+$d);
8124: if ($_64bit) {
8125: $e=(($e<<32)>>32);
8126: $f=(($f<<32)>>32);
8127: }
8128: }
8129: if (wantarray) {
8130: return ($e,$f);
8131: } else {
8132: my $g;
8133: {
8134: use integer;
8135: $g=($e+$f);
8136: if ($_64bit) {
8137: $g=(($g<<32)>>32);
8138: }
8139: }
8140: return $g;
8141: }
8142: }
8143:
8144: sub latest_rnd_algorithm_id {
8145: return '64bit5';
8146: }
8147:
8148: sub get_rand_alg {
8149: my ($courseid)=@_;
8150: if (!$courseid) { $courseid=(&whichuser())[1]; }
8151: if ($courseid) {
8152: return $env{"course.$courseid.rndseed"};
8153: }
8154: return &latest_rnd_algorithm_id();
8155: }
8156:
8157: sub validCODE {
8158: my ($CODE)=@_;
8159: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
8160: return 0;
8161: }
8162:
8163: sub getCODE {
8164: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
8165: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
8166: defined($Apache::lonhomework::parsing_a_task) ) &&
8167: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
8168: return $Apache::lonhomework::history{'resource.CODE'};
8169: }
8170: return undef;
8171: }
8172:
8173: sub rndseed {
8174: my ($symb,$courseid,$domain,$username)=@_;
8175: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
8176: if (!defined($symb)) {
8177: unless ($symb=$wsymb) { return time; }
8178: }
8179: if (!$courseid) { $courseid=$wcourseid; }
8180: if (!$domain) { $domain=$wdomain; }
8181: if (!$username) { $username=$wusername }
8182: my $which=&get_rand_alg();
8183:
8184: if (defined(&getCODE())) {
8185: if ($which eq '64bit5') {
8186: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
8187: } elsif ($which eq '64bit4') {
8188: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
8189: } else {
8190: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
8191: }
8192: } elsif ($which eq '64bit5') {
8193: return &rndseed_64bit5($symb,$courseid,$domain,$username);
8194: } elsif ($which eq '64bit4') {
8195: return &rndseed_64bit4($symb,$courseid,$domain,$username);
8196: } elsif ($which eq '64bit3') {
8197: return &rndseed_64bit3($symb,$courseid,$domain,$username);
8198: } elsif ($which eq '64bit2') {
8199: return &rndseed_64bit2($symb,$courseid,$domain,$username);
8200: } elsif ($which eq '64bit') {
8201: return &rndseed_64bit($symb,$courseid,$domain,$username);
8202: }
8203: return &rndseed_32bit($symb,$courseid,$domain,$username);
8204: }
8205:
8206: sub rndseed_32bit {
8207: my ($symb,$courseid,$domain,$username)=@_;
8208: {
8209: use integer;
8210: my $symbchck=unpack("%32C*",$symb) << 27;
8211: my $symbseed=numval($symb) << 22;
8212: my $namechck=unpack("%32C*",$username) << 17;
8213: my $nameseed=numval($username) << 12;
8214: my $domainseed=unpack("%32C*",$domain) << 7;
8215: my $courseseed=unpack("%32C*",$courseid);
8216: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
8217: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8218: #&logthis("rndseed :$num:$symb");
8219: if ($_64bit) { $num=(($num<<32)>>32); }
8220: return $num;
8221: }
8222: }
8223:
8224: sub rndseed_64bit {
8225: my ($symb,$courseid,$domain,$username)=@_;
8226: {
8227: use integer;
8228: my $symbchck=unpack("%32S*",$symb) << 21;
8229: my $symbseed=numval($symb) << 10;
8230: my $namechck=unpack("%32S*",$username);
8231:
8232: my $nameseed=numval($username) << 21;
8233: my $domainseed=unpack("%32S*",$domain) << 10;
8234: my $courseseed=unpack("%32S*",$courseid);
8235:
8236: my $num1=$symbchck+$symbseed+$namechck;
8237: my $num2=$nameseed+$domainseed+$courseseed;
8238: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8239: #&logthis("rndseed :$num:$symb");
8240: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8241: return "$num1,$num2";
8242: }
8243: }
8244:
8245: sub rndseed_64bit2 {
8246: my ($symb,$courseid,$domain,$username)=@_;
8247: {
8248: use integer;
8249: # strings need to be an even # of cahracters long, it it is odd the
8250: # last characters gets thrown away
8251: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8252: my $symbseed=numval($symb) << 10;
8253: my $namechck=unpack("%32S*",$username.' ');
8254:
8255: my $nameseed=numval($username) << 21;
8256: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8257: my $courseseed=unpack("%32S*",$courseid.' ');
8258:
8259: my $num1=$symbchck+$symbseed+$namechck;
8260: my $num2=$nameseed+$domainseed+$courseseed;
8261: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8262: #&logthis("rndseed :$num:$symb");
8263: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8264: return "$num1,$num2";
8265: }
8266: }
8267:
8268: sub rndseed_64bit3 {
8269: my ($symb,$courseid,$domain,$username)=@_;
8270: {
8271: use integer;
8272: # strings need to be an even # of cahracters long, it it is odd the
8273: # last characters gets thrown away
8274: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8275: my $symbseed=numval2($symb) << 10;
8276: my $namechck=unpack("%32S*",$username.' ');
8277:
8278: my $nameseed=numval2($username) << 21;
8279: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8280: my $courseseed=unpack("%32S*",$courseid.' ');
8281:
8282: my $num1=$symbchck+$symbseed+$namechck;
8283: my $num2=$nameseed+$domainseed+$courseseed;
8284: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8285: #&logthis("rndseed :$num1:$num2:$_64bit");
8286: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8287:
8288: return "$num1:$num2";
8289: }
8290: }
8291:
8292: sub rndseed_64bit4 {
8293: my ($symb,$courseid,$domain,$username)=@_;
8294: {
8295: use integer;
8296: # strings need to be an even # of cahracters long, it it is odd the
8297: # last characters gets thrown away
8298: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8299: my $symbseed=numval3($symb) << 10;
8300: my $namechck=unpack("%32S*",$username.' ');
8301:
8302: my $nameseed=numval3($username) << 21;
8303: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8304: my $courseseed=unpack("%32S*",$courseid.' ');
8305:
8306: my $num1=$symbchck+$symbseed+$namechck;
8307: my $num2=$nameseed+$domainseed+$courseseed;
8308: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8309: #&logthis("rndseed :$num1:$num2:$_64bit");
8310: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8311:
8312: return "$num1:$num2";
8313: }
8314: }
8315:
8316: sub rndseed_64bit5 {
8317: my ($symb,$courseid,$domain,$username)=@_;
8318: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
8319: return "$num1:$num2";
8320: }
8321:
8322: sub rndseed_CODE_64bit {
8323: my ($symb,$courseid,$domain,$username)=@_;
8324: {
8325: use integer;
8326: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8327: my $symbseed=numval2($symb);
8328: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8329: my $CODEseed=numval(&getCODE());
8330: my $courseseed=unpack("%32S*",$courseid.' ');
8331: my $num1=$symbseed+$CODEchck;
8332: my $num2=$CODEseed+$courseseed+$symbchck;
8333: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8334: #&logthis("rndseed :$num1:$num2:$symb");
8335: if ($_64bit) { $num1=(($num1<<32)>>32); }
8336: if ($_64bit) { $num2=(($num2<<32)>>32); }
8337: return "$num1:$num2";
8338: }
8339: }
8340:
8341: sub rndseed_CODE_64bit4 {
8342: my ($symb,$courseid,$domain,$username)=@_;
8343: {
8344: use integer;
8345: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8346: my $symbseed=numval3($symb);
8347: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8348: my $CODEseed=numval3(&getCODE());
8349: my $courseseed=unpack("%32S*",$courseid.' ');
8350: my $num1=$symbseed+$CODEchck;
8351: my $num2=$CODEseed+$courseseed+$symbchck;
8352: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8353: #&logthis("rndseed :$num1:$num2:$symb");
8354: if ($_64bit) { $num1=(($num1<<32)>>32); }
8355: if ($_64bit) { $num2=(($num2<<32)>>32); }
8356: return "$num1:$num2";
8357: }
8358: }
8359:
8360: sub rndseed_CODE_64bit5 {
8361: my ($symb,$courseid,$domain,$username)=@_;
8362: my $code = &getCODE();
8363: my ($num1,$num2)=&digest("$symb,$courseid,$code");
8364: return "$num1:$num2";
8365: }
8366:
8367: sub setup_random_from_rndseed {
8368: my ($rndseed)=@_;
8369: if ($rndseed =~/([,:])/) {
8370: my ($num1,$num2)=split(/[,:]/,$rndseed);
8371: &Math::Random::random_set_seed(abs($num1),abs($num2));
8372: } else {
8373: &Math::Random::random_set_seed_from_phrase($rndseed);
8374: }
8375: }
8376:
8377: sub latest_receipt_algorithm_id {
8378: return 'receipt3';
8379: }
8380:
8381: sub recunique {
8382: my $fucourseid=shift;
8383: my $unique;
8384: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
8385: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8386: $unique=$env{"course.$fucourseid.internal.encseed"};
8387: } else {
8388: $unique=$perlvar{'lonReceipt'};
8389: }
8390: return unpack("%32C*",$unique);
8391: }
8392:
8393: sub recprefix {
8394: my $fucourseid=shift;
8395: my $prefix;
8396: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
8397: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8398: $prefix=$env{"course.$fucourseid.internal.encpref"};
8399: } else {
8400: $prefix=$perlvar{'lonHostID'};
8401: }
8402: return unpack("%32C*",$prefix);
8403: }
8404:
8405: sub ireceipt {
8406: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
8407:
8408: my $return =&recprefix($fucourseid).'-';
8409:
8410: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
8411: $env{'request.state'} eq 'construct') {
8412: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
8413: return $return;
8414: }
8415:
8416: my $cuname=unpack("%32C*",$funame);
8417: my $cudom=unpack("%32C*",$fudom);
8418: my $cucourseid=unpack("%32C*",$fucourseid);
8419: my $cusymb=unpack("%32C*",$fusymb);
8420: my $cunique=&recunique($fucourseid);
8421: my $cpart=unpack("%32S*",$part);
8422: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8423:
8424: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8425:
8426: $return.= ($cunique%$cuname+
8427: $cunique%$cudom+
8428: $cusymb%$cuname+
8429: $cusymb%$cudom+
8430: $cucourseid%$cuname+
8431: $cucourseid%$cudom+
8432: $cpart%$cuname+
8433: $cpart%$cudom);
8434: } else {
8435: $return.= ($cunique%$cuname+
8436: $cunique%$cudom+
8437: $cusymb%$cuname+
8438: $cusymb%$cudom+
8439: $cucourseid%$cuname+
8440: $cucourseid%$cudom);
8441: }
8442: return $return;
8443: }
8444:
8445: sub receipt {
8446: my ($part)=@_;
8447: my ($symb,$courseid,$domain,$name) = &whichuser();
8448: return &ireceipt($name,$domain,$courseid,$symb,$part);
8449: }
8450:
8451: sub whichuser {
8452: my ($passedsymb)=@_;
8453: my ($symb,$courseid,$domain,$name,$publicuser);
8454: if (defined($env{'form.grade_symb'})) {
8455: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8456: my $allowed=&allowed('vgr',$tmp_courseid);
8457: if (!$allowed &&
8458: exists($env{'request.course.sec'}) &&
8459: $env{'request.course.sec'} !~ /^\s*$/) {
8460: $allowed=&allowed('vgr',$tmp_courseid.
8461: '/'.$env{'request.course.sec'});
8462: }
8463: if ($allowed) {
8464: ($symb)=&get_env_multiple('form.grade_symb');
8465: $courseid=$tmp_courseid;
8466: ($domain)=&get_env_multiple('form.grade_domain');
8467: ($name)=&get_env_multiple('form.grade_username');
8468: return ($symb,$courseid,$domain,$name,$publicuser);
8469: }
8470: }
8471: if (!$passedsymb) {
8472: $symb=&symbread();
8473: } else {
8474: $symb=$passedsymb;
8475: }
8476: $courseid=$env{'request.course.id'};
8477: $domain=$env{'user.domain'};
8478: $name=$env{'user.name'};
8479: if ($name eq 'public' && $domain eq 'public') {
8480: if (!defined($env{'form.username'})) {
8481: $env{'form.username'}.=time.rand(10000000);
8482: }
8483: $name.=$env{'form.username'};
8484: }
8485: return ($symb,$courseid,$domain,$name,$publicuser);
8486:
8487: }
8488:
8489: # ------------------------------------------------------------ Serves up a file
8490: # returns either the contents of the file or
8491: # -1 if the file doesn't exist
8492: #
8493: # if the target is a file that was uploaded via DOCS,
8494: # a check will be made to see if a current copy exists on the local server,
8495: # if it does this will be served, otherwise a copy will be retrieved from
8496: # the home server for the course and stored in /home/httpd/html/userfiles on
8497: # the local server.
8498:
8499: sub getfile {
8500: my ($file) = @_;
8501: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8502: &repcopy($file);
8503: return &readfile($file);
8504: }
8505:
8506: sub repcopy_userfile {
8507: my ($file)=@_;
8508: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8509: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8510: my ($cdom,$cnum,$filename) =
8511: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8512: my $uri="/uploaded/$cdom/$cnum/$filename";
8513: if (-e "$file") {
8514: # we already have a local copy, check it out
8515: my @fileinfo = stat($file);
8516: my $rtncode;
8517: my $info;
8518: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8519: if ($lwpresp ne 'ok') {
8520: # there is no such file anymore, even though we had a local copy
8521: if ($rtncode eq '404') {
8522: unlink($file);
8523: }
8524: return -1;
8525: }
8526: if ($info < $fileinfo[9]) {
8527: # nice, the file we have is up-to-date, just say okay
8528: return 'ok';
8529: } else {
8530: # the file is outdated, get rid of it
8531: unlink($file);
8532: }
8533: }
8534: # one way or the other, at this point, we don't have the file
8535: # construct the correct path for the file
8536: my @parts = ($cdom,$cnum);
8537: if ($filename =~ m|^(.+)/[^/]+$|) {
8538: push @parts, split(/\//,$1);
8539: }
8540: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8541: foreach my $part (@parts) {
8542: $path .= '/'.$part;
8543: if (!-e $path) {
8544: mkdir($path,0770);
8545: }
8546: }
8547: # now the path exists for sure
8548: # get a user agent
8549: my $ua=new LWP::UserAgent;
8550: my $transferfile=$file.'.in.transfer';
8551: # FIXME: this should flock
8552: if (-e $transferfile) { return 'ok'; }
8553: my $request;
8554: $uri=~s/^\///;
8555: my $homeserver = &homeserver($cnum,$cdom);
8556: my $protocol = $protocol{$homeserver};
8557: $protocol = 'http' if ($protocol ne 'https');
8558: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
8559: my $response=$ua->request($request,$transferfile);
8560: # did it work?
8561: if ($response->is_error()) {
8562: unlink($transferfile);
8563: &logthis("Userfile repcopy failed for $uri");
8564: return -1;
8565: }
8566: # worked, rename the transfer file
8567: rename($transferfile,$file);
8568: return 'ok';
8569: }
8570:
8571: sub tokenwrapper {
8572: my $uri=shift;
8573: $uri=~s|^https?\://([^/]+)||;
8574: $uri=~s|^/||;
8575: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8576: my $token=$1;
8577: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8578: if ($udom && $uname && $file) {
8579: $file=~s|(\?\.*)*$||;
8580: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8581: my $homeserver = &homeserver($uname,$udom);
8582: my $protocol = $protocol{$homeserver};
8583: $protocol = 'http' if ($protocol ne 'https');
8584: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
8585: (($uri=~/\?/)?'&':'?').'token='.$token.
8586: '&tokenissued='.$perlvar{'lonHostID'};
8587: } else {
8588: return '/adm/notfound.html';
8589: }
8590: }
8591:
8592: # call with reqtype HEAD: get last modification time
8593: # call with reqtype GET: get the file contents
8594: # Do not call this with reqtype GET for large files! It loads everything into memory
8595: #
8596: sub getuploaded {
8597: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8598: $uri=~s/^\///;
8599: my $homeserver = &homeserver($cnum,$cdom);
8600: my $protocol = $protocol{$homeserver};
8601: $protocol = 'http' if ($protocol ne 'https');
8602: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
8603: my $ua=new LWP::UserAgent;
8604: my $request=new HTTP::Request($reqtype,$uri);
8605: my $response=$ua->request($request);
8606: $$rtncode = $response->code;
8607: if (! $response->is_success()) {
8608: return 'failed';
8609: }
8610: if ($reqtype eq 'HEAD') {
8611: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8612: } elsif ($reqtype eq 'GET') {
8613: $$info = $response->content;
8614: }
8615: return 'ok';
8616: }
8617:
8618: sub readfile {
8619: my $file = shift;
8620: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8621: my $fh;
8622: open($fh,"<$file");
8623: my $a='';
8624: while (my $line = <$fh>) { $a .= $line; }
8625: return $a;
8626: }
8627:
8628: sub filelocation {
8629: my ($dir,$file) = @_;
8630: my $location;
8631: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8632:
8633: if ($file =~ m-^/adm/-) {
8634: $file=~s-^/adm/wrapper/-/-;
8635: $file=~s-^/adm/coursedocs/showdoc/-/-;
8636: }
8637:
8638: if ($file=~m:^/~:) { # is a contruction space reference
8639: $location = $file;
8640: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8641: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8642: # is a correct contruction space reference
8643: $location = $file;
8644: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8645: $location = $file;
8646: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8647: my ($udom,$uname,$filename)=
8648: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8649: my $home=&homeserver($uname,$udom);
8650: my $is_me=0;
8651: my @ids=¤t_machine_ids();
8652: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8653: if ($is_me) {
8654: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8655: } else {
8656: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8657: $udom.'/'.$uname.'/'.$filename;
8658: }
8659: } elsif ($file =~ m-^/adm/-) {
8660: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8661: } else {
8662: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8663: $file=~s:^/res/:/:;
8664: if ( !( $file =~ m:^/:) ) {
8665: $location = $dir. '/'.$file;
8666: } else {
8667: $location = '/home/httpd/html/res'.$file;
8668: }
8669: }
8670: $location=~s://+:/:g; # remove duplicate /
8671: while ($location=~m{/\.\./}) {
8672: if ($location =~ m{/[^/]+/\.\./}) {
8673: $location=~ s{/[^/]+/\.\./}{/}g;
8674: } else {
8675: $location=~ s{/\.\./}{/}g;
8676: }
8677: } #remove dir/..
8678: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8679: return $location;
8680: }
8681:
8682: sub hreflocation {
8683: my ($dir,$file)=@_;
8684: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
8685: $file=filelocation($dir,$file);
8686: } elsif ($file=~m-^/adm/-) {
8687: $file=~s-^/adm/wrapper/-/-;
8688: $file=~s-^/adm/coursedocs/showdoc/-/-;
8689: }
8690: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8691: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8692: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8693: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8694: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8695: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8696: -/uploaded/$1/$2/-x;
8697: }
8698: if ($file=~ m{^/userfiles/}) {
8699: $file =~ s{^/userfiles/}{/uploaded/};
8700: }
8701: return $file;
8702: }
8703:
8704: sub current_machine_domains {
8705: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8706: }
8707:
8708: sub machine_domains {
8709: my ($hostname) = @_;
8710: my @domains;
8711: my %hostname = &all_hostnames();
8712: while( my($id, $name) = each(%hostname)) {
8713: # &logthis("-$id-$name-$hostname-");
8714: if ($hostname eq $name) {
8715: push(@domains,&host_domain($id));
8716: }
8717: }
8718: return @domains;
8719: }
8720:
8721: sub current_machine_ids {
8722: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8723: }
8724:
8725: sub machine_ids {
8726: my ($hostname) = @_;
8727: $hostname ||= &hostname($perlvar{'lonHostID'});
8728: my @ids;
8729: my %name_to_host = &all_names();
8730: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8731: return @{ $name_to_host{$hostname} };
8732: }
8733: return;
8734: }
8735:
8736: sub additional_machine_domains {
8737: my @domains;
8738: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8739: while( my $line = <$fh>) {
8740: $line =~ s/\s//g;
8741: push(@domains,$line);
8742: }
8743: return @domains;
8744: }
8745:
8746: sub default_login_domain {
8747: my $domain = $perlvar{'lonDefDomain'};
8748: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8749: foreach my $posdom (¤t_machine_domains(),
8750: &additional_machine_domains()) {
8751: if (lc($posdom) eq lc($testdomain)) {
8752: $domain=$posdom;
8753: last;
8754: }
8755: }
8756: return $domain;
8757: }
8758:
8759: # ------------------------------------------------------------- Declutters URLs
8760:
8761: sub declutter {
8762: my $thisfn=shift;
8763: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8764: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8765: $thisfn=~s/^\///;
8766: $thisfn=~s|^adm/wrapper/||;
8767: $thisfn=~s|^adm/coursedocs/showdoc/||;
8768: $thisfn=~s/^res\///;
8769: $thisfn=~s/\?.+$//;
8770: return $thisfn;
8771: }
8772:
8773: # ------------------------------------------------------------- Clutter up URLs
8774:
8775: sub clutter {
8776: my $thisfn='/'.&declutter(shift);
8777: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8778: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8779: $thisfn='/res'.$thisfn;
8780: }
8781: if ($thisfn !~m|/adm|) {
8782: if ($thisfn =~ m|/ext/|) {
8783: $thisfn='/adm/wrapper'.$thisfn;
8784: } else {
8785: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8786: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8787: if ($embstyle eq 'ssi'
8788: || ($embstyle eq 'hdn')
8789: || ($embstyle eq 'rat')
8790: || ($embstyle eq 'prv')
8791: || ($embstyle eq 'ign')) {
8792: #do nothing with these
8793: } elsif (($embstyle eq 'img')
8794: || ($embstyle eq 'emb')
8795: || ($embstyle eq 'wrp')) {
8796: $thisfn='/adm/wrapper'.$thisfn;
8797: } elsif ($embstyle eq 'unk'
8798: && $thisfn!~/\.(sequence|page)$/) {
8799: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8800: } else {
8801: # &logthis("Got a blank emb style");
8802: }
8803: }
8804: }
8805: return $thisfn;
8806: }
8807:
8808: sub clutter_with_no_wrapper {
8809: my $uri = &clutter(shift);
8810: if ($uri =~ m-^/adm/-) {
8811: $uri =~ s-^/adm/wrapper/-/-;
8812: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8813: }
8814: return $uri;
8815: }
8816:
8817: sub freeze_escape {
8818: my ($value)=@_;
8819: if (ref($value)) {
8820: $value=&nfreeze($value);
8821: return '__FROZEN__'.&escape($value);
8822: }
8823: return &escape($value);
8824: }
8825:
8826:
8827: sub thaw_unescape {
8828: my ($value)=@_;
8829: if ($value =~ /^__FROZEN__/) {
8830: substr($value,0,10,undef);
8831: $value=&unescape($value);
8832: return &thaw($value);
8833: }
8834: return &unescape($value);
8835: }
8836:
8837: sub correct_line_ends {
8838: my ($result)=@_;
8839: $$result =~s/\r\n/\n/mg;
8840: $$result =~s/\r/\n/mg;
8841: }
8842: # ================================================================ Main Program
8843:
8844: sub goodbye {
8845: &logthis("Starting Shut down");
8846: #not converted to using infrastruture and probably shouldn't be
8847: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8848: #converted
8849: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8850: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8851: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8852: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8853: #1.1 only
8854: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8855: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8856: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8857: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8858: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8859: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8860: &logthis(sprintf("%-20s is %s",'hits',$hits));
8861: &flushcourselogs();
8862: &logthis("Shutting down");
8863: }
8864:
8865: sub get_dns {
8866: my ($url,$func,$ignore_cache) = @_;
8867: if (!$ignore_cache) {
8868: my ($content,$cached)=
8869: &Apache::lonnet::is_cached_new('dns',$url);
8870: if ($cached) {
8871: &$func($content);
8872: return;
8873: }
8874: }
8875:
8876: my %alldns;
8877: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8878: foreach my $dns (<$config>) {
8879: next if ($dns !~ /^\^(\S*)/x);
8880: my $line = $1;
8881: my ($host,$protocol) = split(/:/,$line);
8882: if ($protocol ne 'https') {
8883: $protocol = 'http';
8884: }
8885: $alldns{$host} = $protocol;
8886: }
8887: while (%alldns) {
8888: my ($dns) = keys(%alldns);
8889: my $ua=new LWP::UserAgent;
8890: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
8891: my $response=$ua->request($request);
8892: delete($alldns{$dns});
8893: next if ($response->is_error());
8894: my @content = split("\n",$response->content);
8895: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8896: &$func(\@content);
8897: return;
8898: }
8899: close($config);
8900: my $which = (split('/',$url))[3];
8901: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8902: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8903: my @content = <$config>;
8904: &$func(\@content);
8905: return;
8906: }
8907: # ------------------------------------------------------------ Read domain file
8908: {
8909: my $loaded;
8910: my %domain;
8911:
8912: sub parse_domain_tab {
8913: my ($lines) = @_;
8914: foreach my $line (@$lines) {
8915: next if ($line =~ /^(\#|\s*$ )/x);
8916:
8917: chomp($line);
8918: my ($name,@elements) = split(/:/,$line,9);
8919: my %this_domain;
8920: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8921: 'lang_def', 'city', 'longi', 'lati',
8922: 'primary') {
8923: $this_domain{$field} = shift(@elements);
8924: }
8925: $domain{$name} = \%this_domain;
8926: }
8927: }
8928:
8929: sub reset_domain_info {
8930: undef($loaded);
8931: undef(%domain);
8932: }
8933:
8934: sub load_domain_tab {
8935: my ($ignore_cache) = @_;
8936: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8937: my $fh;
8938: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8939: my @lines = <$fh>;
8940: &parse_domain_tab(\@lines);
8941: }
8942: close($fh);
8943: $loaded = 1;
8944: }
8945:
8946: sub domain {
8947: &load_domain_tab() if (!$loaded);
8948:
8949: my ($name,$what) = @_;
8950: return if ( !exists($domain{$name}) );
8951:
8952: if (!$what) {
8953: return $domain{$name}{'description'};
8954: }
8955: return $domain{$name}{$what};
8956: }
8957:
8958: sub domain_info {
8959: &load_domain_tab() if (!$loaded);
8960: return %domain;
8961: }
8962:
8963: }
8964:
8965:
8966: # ------------------------------------------------------------- Read hosts file
8967: {
8968: my %hostname;
8969: my %hostdom;
8970: my %libserv;
8971: my $loaded;
8972: my %name_to_host;
8973:
8974: sub parse_hosts_tab {
8975: my ($file) = @_;
8976: foreach my $configline (@$file) {
8977: next if ($configline =~ /^(\#|\s*$ )/x);
8978: next if ($configline =~ /^\^/);
8979: chomp($configline);
8980: my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
8981: $name=~s/\s//g;
8982: if ($id && $domain && $role && $name) {
8983: $hostname{$id}=$name;
8984: push(@{$name_to_host{$name}}, $id);
8985: $hostdom{$id}=$domain;
8986: if ($role eq 'library') { $libserv{$id}=$name; }
8987: if (defined($protocol)) {
8988: if ($protocol eq 'https') {
8989: $protocol{$id} = $protocol;
8990: } else {
8991: $protocol{$id} = 'http';
8992: }
8993: } else {
8994: $protocol{$id} = 'http';
8995: }
8996: }
8997: }
8998: }
8999:
9000: sub reset_hosts_info {
9001: &purge_remembered();
9002: &reset_domain_info();
9003: &reset_hosts_ip_info();
9004: undef(%name_to_host);
9005: undef(%hostname);
9006: undef(%hostdom);
9007: undef(%libserv);
9008: undef($loaded);
9009: }
9010:
9011: sub load_hosts_tab {
9012: my ($ignore_cache) = @_;
9013: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9014: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9015: my @config = <$config>;
9016: &parse_hosts_tab(\@config);
9017: close($config);
9018: $loaded=1;
9019: }
9020:
9021: sub hostname {
9022: &load_hosts_tab() if (!$loaded);
9023:
9024: my ($lonid) = @_;
9025: return $hostname{$lonid};
9026: }
9027:
9028: sub all_hostnames {
9029: &load_hosts_tab() if (!$loaded);
9030:
9031: return %hostname;
9032: }
9033:
9034: sub all_names {
9035: &load_hosts_tab() if (!$loaded);
9036:
9037: return %name_to_host;
9038: }
9039:
9040: sub all_host_domain {
9041: &load_hosts_tab() if (!$loaded);
9042: return %hostdom;
9043: }
9044:
9045: sub is_library {
9046: &load_hosts_tab() if (!$loaded);
9047:
9048: return exists($libserv{$_[0]});
9049: }
9050:
9051: sub all_library {
9052: &load_hosts_tab() if (!$loaded);
9053:
9054: return %libserv;
9055: }
9056:
9057: sub get_servers {
9058: &load_hosts_tab() if (!$loaded);
9059:
9060: my ($domain,$type) = @_;
9061: my %possible_hosts = ($type eq 'library') ? %libserv
9062: : %hostname;
9063: my %result;
9064: if (ref($domain) eq 'ARRAY') {
9065: while ( my ($host,$hostname) = each(%possible_hosts)) {
9066: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
9067: $result{$host} = $hostname;
9068: }
9069: }
9070: } else {
9071: while ( my ($host,$hostname) = each(%possible_hosts)) {
9072: if ($hostdom{$host} eq $domain) {
9073: $result{$host} = $hostname;
9074: }
9075: }
9076: }
9077: return %result;
9078: }
9079:
9080: sub host_domain {
9081: &load_hosts_tab() if (!$loaded);
9082:
9083: my ($lonid) = @_;
9084: return $hostdom{$lonid};
9085: }
9086:
9087: sub all_domains {
9088: &load_hosts_tab() if (!$loaded);
9089:
9090: my %seen;
9091: my @uniq = grep(!$seen{$_}++, values(%hostdom));
9092: return @uniq;
9093: }
9094: }
9095:
9096: {
9097: my %iphost;
9098: my %name_to_ip;
9099: my %lonid_to_ip;
9100:
9101: sub get_hosts_from_ip {
9102: my ($ip) = @_;
9103: my %iphosts = &get_iphost();
9104: if (ref($iphosts{$ip})) {
9105: return @{$iphosts{$ip}};
9106: }
9107: return;
9108: }
9109:
9110: sub reset_hosts_ip_info {
9111: undef(%iphost);
9112: undef(%name_to_ip);
9113: undef(%lonid_to_ip);
9114: }
9115:
9116: sub get_host_ip {
9117: my ($lonid) = @_;
9118: if (exists($lonid_to_ip{$lonid})) {
9119: return $lonid_to_ip{$lonid};
9120: }
9121: my $name=&hostname($lonid);
9122: my $ip = gethostbyname($name);
9123: return if (!$ip || length($ip) ne 4);
9124: $ip=inet_ntoa($ip);
9125: $name_to_ip{$name} = $ip;
9126: $lonid_to_ip{$lonid} = $ip;
9127: return $ip;
9128: }
9129:
9130: sub get_iphost {
9131: my ($ignore_cache) = @_;
9132:
9133: if (!$ignore_cache) {
9134: if (%iphost) {
9135: return %iphost;
9136: }
9137: my ($ip_info,$cached)=
9138: &Apache::lonnet::is_cached_new('iphost','iphost');
9139: if ($cached) {
9140: %iphost = %{$ip_info->[0]};
9141: %name_to_ip = %{$ip_info->[1]};
9142: %lonid_to_ip = %{$ip_info->[2]};
9143: return %iphost;
9144: }
9145: }
9146:
9147: # get yesterday's info for fallback
9148: my %old_name_to_ip;
9149: my ($ip_info,$cached)=
9150: &Apache::lonnet::is_cached_new('iphost','iphost');
9151: if ($cached) {
9152: %old_name_to_ip = %{$ip_info->[1]};
9153: }
9154:
9155: my %name_to_host = &all_names();
9156: foreach my $name (keys(%name_to_host)) {
9157: my $ip;
9158: if (!exists($name_to_ip{$name})) {
9159: $ip = gethostbyname($name);
9160: if (!$ip || length($ip) ne 4) {
9161: if (defined($old_name_to_ip{$name})) {
9162: $ip = $old_name_to_ip{$name};
9163: &logthis("Can't find $name defaulting to old $ip");
9164: } else {
9165: &logthis("Name $name no IP found");
9166: next;
9167: }
9168: } else {
9169: $ip=inet_ntoa($ip);
9170: }
9171: $name_to_ip{$name} = $ip;
9172: } else {
9173: $ip = $name_to_ip{$name};
9174: }
9175: foreach my $id (@{ $name_to_host{$name} }) {
9176: $lonid_to_ip{$id} = $ip;
9177: }
9178: push(@{$iphost{$ip}},@{$name_to_host{$name}});
9179: }
9180: &Apache::lonnet::do_cache_new('iphost','iphost',
9181: [\%iphost,\%name_to_ip,\%lonid_to_ip],
9182: 48*60*60);
9183:
9184: return %iphost;
9185: }
9186:
9187: #
9188: # Given a DNS returns the loncapa host name for that DNS
9189: #
9190: sub host_from_dns {
9191: my ($dns) = @_;
9192: my @hosts;
9193: my $ip;
9194:
9195: if (exists($name_to_ip{$dns})) {
9196: $ip = $name_to_ip{$dns};
9197: }
9198: if (!$ip) {
9199: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
9200: if (length($ip) == 4) {
9201: $ip = &IO::Socket::inet_ntoa($ip);
9202: }
9203: }
9204: if ($ip) {
9205: @hosts = get_hosts_from_ip($ip);
9206: return $hosts[0];
9207: }
9208: return undef;
9209: }
9210:
9211: }
9212:
9213: BEGIN {
9214:
9215: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
9216: unless ($readit) {
9217: {
9218: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
9219: %perlvar = (%perlvar,%{$configvars});
9220: }
9221:
9222:
9223: # ------------------------------------------------------ Read spare server file
9224: {
9225: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
9226:
9227: while (my $configline=<$config>) {
9228: chomp($configline);
9229: if ($configline) {
9230: my ($host,$type) = split(':',$configline,2);
9231: if (!defined($type) || $type eq '') { $type = 'default' };
9232: push(@{ $spareid{$type} }, $host);
9233: }
9234: }
9235: close($config);
9236: }
9237: # ------------------------------------------------------------ Read permissions
9238: {
9239: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
9240:
9241: while (my $configline=<$config>) {
9242: chomp($configline);
9243: if ($configline) {
9244: my ($role,$perm)=split(/ /,$configline);
9245: if ($perm ne '') { $pr{$role}=$perm; }
9246: }
9247: }
9248: close($config);
9249: }
9250:
9251: # -------------------------------------------- Read plain texts for permissions
9252: {
9253: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
9254:
9255: while (my $configline=<$config>) {
9256: chomp($configline);
9257: if ($configline) {
9258: my ($short,@plain)=split(/:/,$configline);
9259: %{$prp{$short}} = ();
9260: if (@plain > 0) {
9261: $prp{$short}{'std'} = $plain[0];
9262: for (my $i=1; $i<@plain; $i++) {
9263: $prp{$short}{'alt'.$i} = $plain[$i];
9264: }
9265: }
9266: }
9267: }
9268: close($config);
9269: }
9270:
9271: # ---------------------------------------------------------- Read package table
9272: {
9273: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
9274:
9275: while (my $configline=<$config>) {
9276: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
9277: chomp($configline);
9278: my ($short,$plain)=split(/:/,$configline);
9279: my ($pack,$name)=split(/\&/,$short);
9280: if ($plain ne '') {
9281: $packagetab{$pack.'&'.$name.'&name'}=$name;
9282: $packagetab{$short}=$plain;
9283: }
9284: }
9285: close($config);
9286: }
9287:
9288: # ------------- set up temporary directory
9289: {
9290: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
9291:
9292: }
9293:
9294: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
9295: 'compress_threshold'=> 20_000,
9296: });
9297:
9298: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
9299: $dumpcount=0;
9300: $locknum=0;
9301:
9302: &logtouch();
9303: &logthis('<font color="yellow">INFO: Read configuration</font>');
9304: $readit=1;
9305: {
9306: use integer;
9307: my $test=(2**32)+1;
9308: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
9309: &logthis(" Detected 64bit platform ($_64bit)");
9310: }
9311: }
9312: }
9313:
9314: 1;
9315: __END__
9316:
9317: =pod
9318:
9319: =head1 NAME
9320:
9321: Apache::lonnet - Subroutines to ask questions about things in the network.
9322:
9323: =head1 SYNOPSIS
9324:
9325: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
9326:
9327: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
9328:
9329: Common parameters:
9330:
9331: =over 4
9332:
9333: =item *
9334:
9335: $uname : an internal username (if $cname expecting a course Id specifically)
9336:
9337: =item *
9338:
9339: $udom : a domain (if $cdom expecting a course's domain specifically)
9340:
9341: =item *
9342:
9343: $symb : a resource instance identifier
9344:
9345: =item *
9346:
9347: $namespace : the name of a .db file that contains the data needed or
9348: being set.
9349:
9350: =back
9351:
9352: =head1 OVERVIEW
9353:
9354: lonnet provides subroutines which interact with the
9355: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
9356: about classes, users, and resources.
9357:
9358: For many of these objects you can also use this to store data about
9359: them or modify them in various ways.
9360:
9361: =head2 Symbs
9362:
9363: To identify a specific instance of a resource, LON-CAPA uses symbols
9364: or "symbs"X<symb>. These identifiers are built from the URL of the
9365: map, the resource number of the resource in the map, and the URL of
9366: the resource itself. The latter is somewhat redundant, but might help
9367: if maps change.
9368:
9369: An example is
9370:
9371: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
9372:
9373: The respective map entry is
9374:
9375: <resource id="19" src="/res/msu/korte/tests/part12.problem"
9376: title="Problem 2">
9377: </resource>
9378:
9379: Symbs are used by the random number generator, as well as to store and
9380: restore data specific to a certain instance of for example a problem.
9381:
9382: =head2 Storing And Retrieving Data
9383:
9384: X<store()>X<cstore()>X<restore()>Three of the most important functions
9385: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
9386: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
9387: is is the non-critical message twin of cstore. These functions are for
9388: handlers to store a perl hash to a user's permanent data space in an
9389: easy manner, and to retrieve it again on another call. It is expected
9390: that a handler would use this once at the beginning to retrieve data,
9391: and then again once at the end to send only the new data back.
9392:
9393: The data is stored in the user's data directory on the user's
9394: homeserver under the ID of the course.
9395:
9396: The hash that is returned by restore will have all of the previous
9397: value for all of the elements of the hash.
9398:
9399: Example:
9400:
9401: #creating a hash
9402: my %hash;
9403: $hash{'foo'}='bar';
9404:
9405: #storing it
9406: &Apache::lonnet::cstore(\%hash);
9407:
9408: #changing a value
9409: $hash{'foo'}='notbar';
9410:
9411: #adding a new value
9412: $hash{'bar'}='foo';
9413: &Apache::lonnet::cstore(\%hash);
9414:
9415: #retrieving the hash
9416: my %history=&Apache::lonnet::restore();
9417:
9418: #print the hash
9419: foreach my $key (sort(keys(%history))) {
9420: print("\%history{$key} = $history{$key}");
9421: }
9422:
9423: Will print out:
9424:
9425: %history{1:foo} = bar
9426: %history{1:keys} = foo:timestamp
9427: %history{1:timestamp} = 990455579
9428: %history{2:bar} = foo
9429: %history{2:foo} = notbar
9430: %history{2:keys} = foo:bar:timestamp
9431: %history{2:timestamp} = 990455580
9432: %history{bar} = foo
9433: %history{foo} = notbar
9434: %history{timestamp} = 990455580
9435: %history{version} = 2
9436:
9437: Note that the special hash entries C<keys>, C<version> and
9438: C<timestamp> were added to the hash. C<version> will be equal to the
9439: total number of versions of the data that have been stored. The
9440: C<timestamp> attribute will be the UNIX time the hash was
9441: stored. C<keys> is available in every historical section to list which
9442: keys were added or changed at a specific historical revision of a
9443: hash.
9444:
9445: B<Warning>: do not store the hash that restore returns directly. This
9446: will cause a mess since it will restore the historical keys as if the
9447: were new keys. I.E. 1:foo will become 1:1:foo etc.
9448:
9449: Calling convention:
9450:
9451: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
9452: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
9453:
9454: For more detailed information, see lonnet specific documentation.
9455:
9456: =head1 RETURN MESSAGES
9457:
9458: =over 4
9459:
9460: =item * B<con_lost>: unable to contact remote host
9461:
9462: =item * B<con_delayed>: unable to contact remote host, message will be delivered
9463: when the connection is brought back up
9464:
9465: =item * B<con_failed>: unable to contact remote host and unable to save message
9466: for later delivery
9467:
9468: =item * B<error:>: an error a occurred, a description of the error follows the :
9469:
9470: =item * B<no_such_host>: unable to fund a host associated with the user/domain
9471: that was requested
9472:
9473: =back
9474:
9475: =head1 PUBLIC SUBROUTINES
9476:
9477: =head2 Session Environment Functions
9478:
9479: =over 4
9480:
9481: =item *
9482: X<appenv()>
9483: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9484: the user envirnoment file, and will be restored for each access this
9485: user makes during this session, also modifies the %env for the current
9486: process. Optional rolesarrayref - if defined contains a reference to an array
9487: of roles which are exempt from the restriction on modifying user.role entries
9488: in the user's environment.db and in %env.
9489:
9490: =item *
9491: X<delenv()>
9492: B<delenv($delthis,$regexp)>: removes all items from the session
9493: environment file that begin with $delthis. If the
9494: optional second arg - $regexp - is true, $delthis is treated as a
9495: regular expression, otherwise \Q$delthis\E is used.
9496: The values are also deleted from the current processes %env.
9497:
9498: =item * get_env_multiple($name)
9499:
9500: gets $name from the %env hash, it seemlessly handles the cases where multiple
9501: values may be defined and end up as an array ref.
9502:
9503: returns an array of values
9504:
9505: =back
9506:
9507: =head2 User Information
9508:
9509: =over 4
9510:
9511: =item *
9512: X<queryauthenticate()>
9513: B<queryauthenticate($uname,$udom)>: try to determine user's current
9514: authentication scheme
9515:
9516: =item *
9517: X<authenticate()>
9518: B<authenticate($uname,$upass,$udom)>: try to
9519: authenticate user from domain's lib servers (first use the current
9520: one). C<$upass> should be the users password.
9521:
9522: =item *
9523: X<homeserver()>
9524: B<homeserver($uname,$udom)>: find the server which has
9525: the user's directory and files (there must be only one), this caches
9526: the answer, and also caches if there is a borken connection.
9527:
9528: =item *
9529: X<idget()>
9530: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9531: (IDs are a unique resource in a domain, there must be only 1 ID per
9532: username, and only 1 username per ID in a specific domain) (returns
9533: hash: id=>name,id=>name)
9534:
9535: =item *
9536: X<idrget()>
9537: B<idrget($udom,@unames)>: find the IDs behind a list of
9538: usernames (returns hash: name=>id,name=>id)
9539:
9540: =item *
9541: X<idput()>
9542: B<idput($udom,%ids)>: store away a list of names and associated IDs
9543:
9544: =item *
9545: X<rolesinit()>
9546: B<rolesinit($udom,$username,$authhost)>: get user privileges
9547:
9548: =item *
9549: X<getsection()>
9550: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9551: course $cname, return section name/number or '' for "not in course"
9552: and '-1' for "no section"
9553:
9554: =item *
9555: X<userenvironment()>
9556: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9557: passed in @what from the requested user's environment, returns a hash
9558:
9559: =item *
9560: X<userlog_query()>
9561: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9562: activity.log file. %filters defines filters applied when parsing the
9563: log file. These can be start or end timestamps, or the type of action
9564: - log to look for Login or Logout events, check for Checkin or
9565: Checkout, role for role selection. The response is in the form
9566: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9567: escaped strings of the action recorded in the activity.log file.
9568:
9569: =back
9570:
9571: =head2 User Roles
9572:
9573: =over 4
9574:
9575: =item *
9576:
9577: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9578: F: full access
9579: U,I,K: authentication modes (cxx only)
9580: '': forbidden
9581: 1: user needs to choose course
9582: 2: browse allowed
9583: A: passphrase authentication needed
9584:
9585: =item *
9586:
9587: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9588: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9589: and course level
9590:
9591: =item *
9592:
9593: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
9594: (rolesplain.tab); plain text explanation of a user role term.
9595: $type is Course (default) or Group.
9596: If $forcedefault evaluates to true, text returned will be default
9597: text for $type. Otherwise, if this is a course, the text returned
9598: will be a custom name for the role (if defined in the course's
9599: environment). If no custom name is defined the default is returned.
9600:
9601: =item *
9602:
9603: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9604: All arguments are optional. Returns a hash of a roles, either for
9605: co-author/assistant author roles for a user's Construction Space
9606: (default), or if $context is 'userroles', roles for the user himself,
9607: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9608: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9609: For each key, value is set to colon-separated start and end times for
9610: the role. If no username and domain are specified, will default to
9611: current user/domain. Types, roles, and roledoms are references to arrays
9612: of role statuses (active, future or previous), roles
9613: (e.g., cc,in, st etc.) and domains of the roles which can be used
9614: to restrict the list of roles reported. If no array ref is
9615: provided for types, will default to return only active roles.
9616:
9617: =back
9618:
9619: =head2 User Modification
9620:
9621: =over 4
9622:
9623: =item *
9624:
9625: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9626: user for the level given by URL. Optional start and end dates (leave empty
9627: string or zero for "no date")
9628:
9629: =item *
9630:
9631: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9632: change a users, password, possible return values are: ok,
9633: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9634: refused
9635:
9636: =item *
9637:
9638: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9639:
9640: =item *
9641:
9642: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
9643: $forceid,$desiredhome,$email,$inststatus) :
9644: modify user
9645:
9646: =item *
9647:
9648: modifystudent
9649:
9650: modify a student's enrollment and identification information.
9651: The course id is resolved based on the current users environment.
9652: This means the envoking user must be a course coordinator or otherwise
9653: associated with a course.
9654:
9655: This call is essentially a wrapper for lonnet::modifyuser and
9656: lonnet::modify_student_enrollment
9657:
9658: Inputs:
9659:
9660: =over 4
9661:
9662: =item B<$udom> Student's loncapa domain
9663:
9664: =item B<$uname> Student's loncapa login name
9665:
9666: =item B<$uid> Student/Employee ID
9667:
9668: =item B<$umode> Student's authentication mode
9669:
9670: =item B<$upass> Student's password
9671:
9672: =item B<$first> Student's first name
9673:
9674: =item B<$middle> Student's middle name
9675:
9676: =item B<$last> Student's last name
9677:
9678: =item B<$gene> Student's generation
9679:
9680: =item B<$usec> Student's section in course
9681:
9682: =item B<$end> Unix time of the roles expiration
9683:
9684: =item B<$start> Unix time of the roles start date
9685:
9686: =item B<$forceid> If defined, allow $uid to be changed
9687:
9688: =item B<$desiredhome> server to use as home server for student
9689:
9690: =item B<$email> Student's permanent e-mail address
9691:
9692: =item B<$type> Type of enrollment (auto or manual)
9693:
9694: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
9695:
9696: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
9697:
9698: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
9699:
9700: =item B<$context> role change context (shown in User Management Logs display in a course)
9701:
9702: =item B<$inststatus> institutional status of user - : separated string of escaped status types
9703:
9704: =back
9705:
9706: =item *
9707:
9708: modify_student_enrollment
9709:
9710: Change a students enrollment status in a class. The environment variable
9711: 'role.request.course' must be defined for this function to proceed.
9712:
9713: Inputs:
9714:
9715: =over 4
9716:
9717: =item $udom, students domain
9718:
9719: =item $uname, students name
9720:
9721: =item $uid, students user id
9722:
9723: =item $first, students first name
9724:
9725: =item $middle
9726:
9727: =item $last
9728:
9729: =item $gene
9730:
9731: =item $usec
9732:
9733: =item $end
9734:
9735: =item $start
9736:
9737: =item $type
9738:
9739: =item $locktype
9740:
9741: =item $cid
9742:
9743: =item $selfenroll
9744:
9745: =item $context
9746:
9747: =back
9748:
9749:
9750: =item *
9751:
9752: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9753: custom role; give a custom role to a user for the level given by URL. Specify
9754: name and domain of role author, and role name
9755:
9756: =item *
9757:
9758: revokerole($udom,$uname,$url,$role) : revoke a role for url
9759:
9760: =item *
9761:
9762: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9763:
9764: =back
9765:
9766: =head2 Course Infomation
9767:
9768: =over 4
9769:
9770: =item *
9771:
9772: coursedescription($courseid) : returns a hash of information about the
9773: specified course id, including all environment settings for the
9774: course, the description of the course will be in the hash under the
9775: key 'description'
9776:
9777: =item *
9778:
9779: resdata($name,$domain,$type,@which) : request for current parameter
9780: setting for a specific $type, where $type is either 'course' or 'user',
9781: @what should be a list of parameters to ask about. This routine caches
9782: answers for 5 minutes.
9783:
9784: =item *
9785:
9786: get_courseresdata($courseid, $domain) : dump the entire course resource
9787: data base, returning a hash that is keyed by the resource name and has
9788: values that are the resource value. I believe that the timestamps and
9789: versions are also returned.
9790:
9791:
9792: =back
9793:
9794: =head2 Course Modification
9795:
9796: =over 4
9797:
9798: =item *
9799:
9800: writecoursepref($courseid,%prefs) : write preferences (environment
9801: database) for a course
9802:
9803: =item *
9804:
9805: createcourse($udom,$description,$url) : make/modify course
9806:
9807: =back
9808:
9809: =head2 Resource Subroutines
9810:
9811: =over 4
9812:
9813: =item *
9814:
9815: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9816:
9817: =item *
9818:
9819: repcopy($filename) : subscribes to the requested file, and attempts to
9820: replicate from the owning library server, Might return
9821: 'unavailable', 'not_found', 'forbidden', 'ok', or
9822: 'bad_request', also attempts to grab the metadata for the
9823: resource. Expects the local filesystem pathname
9824: (/home/httpd/html/res/....)
9825:
9826: =back
9827:
9828: =head2 Resource Information
9829:
9830: =over 4
9831:
9832: =item *
9833:
9834: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9835: a vairety of different possible values, $varname should be a request
9836: string, and the other parameters can be used to specify who and what
9837: one is asking about.
9838:
9839: Possible values for $varname are environment.lastname (or other item
9840: from the envirnment hash), user.name (or someother aspect about the
9841: user), resource.0.maxtries (or some other part and parameter of a
9842: resource)
9843:
9844: =item *
9845:
9846: directcondval($number) : get current value of a condition; reads from a state
9847: string
9848:
9849: =item *
9850:
9851: condval($condidx) : value of condition index based on state
9852:
9853: =item *
9854:
9855: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9856: resource's metadata, $what should be either a specific key, or either
9857: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9858: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9859:
9860: this function automatically caches all requests
9861:
9862: =item *
9863:
9864: metadata_query($query,$custom,$customshow) : make a metadata query against the
9865: network of library servers; returns file handle of where SQL and regex results
9866: will be stored for query
9867:
9868: =item *
9869:
9870: symbread($filename) : return symbolic list entry (filename argument optional);
9871: returns the data handle
9872:
9873: =item *
9874:
9875: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9876: a possible symb for the URL in $thisfn, and if is an encryypted
9877: resource that the user accessed using /enc/ returns a 1 on success, 0
9878: on failure, user must be in a course, as it assumes the existance of
9879: the course initial hash, and uses $env('request.course.id'}
9880:
9881:
9882: =item *
9883:
9884: symbclean($symb) : removes versions numbers from a symb, returns the
9885: cleaned symb
9886:
9887: =item *
9888:
9889: is_on_map($uri) : checks if the $uri is somewhere on the current
9890: course map, user must be in a course for it to work.
9891:
9892: =item *
9893:
9894: numval($salt) : return random seed value (addend for rndseed)
9895:
9896: =item *
9897:
9898: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9899: a random seed, all arguments are optional, if they aren't sent it uses the
9900: environment to derive them. Note: if symb isn't sent and it can't get one
9901: from &symbread it will use the current time as its return value
9902:
9903: =item *
9904:
9905: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9906: unfakeable, receipt
9907:
9908: =item *
9909:
9910: receipt() : API to ireceipt working off of env values; given out to users
9911:
9912: =item *
9913:
9914: countacc($url) : count the number of accesses to a given URL
9915:
9916: =item *
9917:
9918: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9919:
9920: =item *
9921:
9922: checkin($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 $tcrsid)
9923:
9924: =item *
9925:
9926: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9927:
9928: =item *
9929:
9930: devalidate($symb) : devalidate temporary spreadsheet calculations,
9931: forcing spreadsheet to reevaluate the resource scores next time.
9932:
9933: =back
9934:
9935: =head2 Storing/Retreiving Data
9936:
9937: =over 4
9938:
9939: =item *
9940:
9941: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9942: for this url; hashref needs to be given and should be a \%hashname; the
9943: remaining args aren't required and if they aren't passed or are '' they will
9944: be derived from the env
9945:
9946: =item *
9947:
9948: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9949: uses critical subroutine
9950:
9951: =item *
9952:
9953: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9954: all args are optional
9955:
9956: =item *
9957:
9958: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9959: dumps the complete (or key matching regexp) namespace into a hash
9960: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9961: normally &store()ed into
9962:
9963: $range should be either an integer '100' (give me the first 100
9964: matching records)
9965: or be two integers sperated by a - with no spaces
9966: '30-50' (give me the 30th through the 50th matching
9967: records)
9968:
9969:
9970: =item *
9971:
9972: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9973: replaces a &store() version of data with a replacement set of data
9974: for a particular resource in a namespace passed in the $storehash hash
9975: reference
9976:
9977: =item *
9978:
9979: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9980: works very similar to store/cstore, but all data is stored in a
9981: temporary location and can be reset using tmpreset, $storehash should
9982: be a hash reference, returns nothing on success
9983:
9984: =item *
9985:
9986: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9987: similar to restore, but all data is stored in a temporary location and
9988: can be reset using tmpreset. Returns a hash of values on success,
9989: error string otherwise.
9990:
9991: =item *
9992:
9993: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9994: deltes all keys for $symb form the temporary storage hash.
9995:
9996: =item *
9997:
9998: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9999: reference filled in from namesp ($udom and $uname are optional)
10000:
10001: =item *
10002:
10003: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
10004: namesp ($udom and $uname are optional)
10005:
10006: =item *
10007:
10008: dump($namespace,$udom,$uname,$regexp,$range) :
10009: dumps the complete (or key matching regexp) namespace into a hash
10010: ($udom, $uname, $regexp, $range are optional)
10011:
10012: $range should be either an integer '100' (give me the first 100
10013: matching records)
10014: or be two integers sperated by a - with no spaces
10015: '30-50' (give me the 30th through the 50th matching
10016: records)
10017: =item *
10018:
10019: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
10020: $store can be a scalar, an array reference, or if the amount to be
10021: incremented is > 1, a hash reference.
10022:
10023: ($udom and $uname are optional)
10024:
10025: =item *
10026:
10027: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
10028: ($udom and $uname are optional)
10029:
10030: =item *
10031:
10032: cput($namespace,$storehash,$udom,$uname) : critical put
10033: ($udom and $uname are optional)
10034:
10035: =item *
10036:
10037: newput($namespace,$storehash,$udom,$uname) :
10038:
10039: Attempts to store the items in the $storehash, but only if they don't
10040: currently exist, if this succeeds you can be certain that you have
10041: successfully created a new key value pair in the $namespace db.
10042:
10043:
10044: Args:
10045: $namespace: name of database to store values to
10046: $storehash: hashref to store to the db
10047: $udom: (optional) domain of user containing the db
10048: $uname: (optional) name of user caontaining the db
10049:
10050: Returns:
10051: 'ok' -> succeeded in storing all keys of $storehash
10052: 'key_exists: <key>' -> failed to anything out of $storehash, as at
10053: least <key> already existed in the db (other
10054: requested keys may also already exist)
10055: 'error: <msg>' -> unable to tie the DB or other error occurred
10056: 'con_lost' -> unable to contact request server
10057: 'refused' -> action was not allowed by remote machine
10058:
10059:
10060: =item *
10061:
10062: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10063: reference filled in from namesp (encrypts the return communication)
10064: ($udom and $uname are optional)
10065:
10066: =item *
10067:
10068: log($udom,$name,$home,$message) : write to permanent log for user; use
10069: critical subroutine
10070:
10071: =item *
10072:
10073: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
10074: array reference filled in from namespace found in domain level on either
10075: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
10076:
10077: =item *
10078:
10079: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
10080: domain level either on specified domain server ($uhome) or primary domain
10081: server ($udom and $uhome are optional)
10082:
10083: =item *
10084:
10085: get_domain_defaults($target_domain) : returns hash with defaults for
10086: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
10087: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
10088: or localauth), initial password or a kerberos realm, language (e.g., en-us).
10089: Values are retrieved from cache (if current), or from domain's configuration.db
10090: (if available), or lastly from values in lonTabs/dns_domain,tab,
10091: or lonTabs/domain.tab.
10092:
10093: %domdefaults = &get_auth_defaults($target_domain);
10094:
10095: =back
10096:
10097: =head2 Network Status Functions
10098:
10099: =over 4
10100:
10101: =item *
10102:
10103: dirlist($uri) : return directory list based on URI
10104:
10105: =item *
10106:
10107: spareserver() : find server with least workload from spare.tab
10108:
10109:
10110: =item *
10111:
10112: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
10113: if there is no corresponding loncapa host.
10114:
10115: =back
10116:
10117:
10118: =head2 Apache Request
10119:
10120: =over 4
10121:
10122: =item *
10123:
10124: ssi($url,%hash) : server side include, does a complete request cycle on url to
10125: localhost, posts hash
10126:
10127: =back
10128:
10129: =head2 Data to String to Data
10130:
10131: =over 4
10132:
10133: =item *
10134:
10135: hash2str(%hash) : convert a hash into a string complete with escaping and '='
10136: and '&' separators, supports elements that are arrayrefs and hashrefs
10137:
10138: =item *
10139:
10140: hashref2str($hashref) : convert a hashref into a string complete with
10141: escaping and '=' and '&' separators, supports elements that are
10142: arrayrefs and hashrefs
10143:
10144: =item *
10145:
10146: arrayref2str($arrayref) : convert an arrayref into a string complete
10147: with escaping and '&' separators, supports elements that are arrayrefs
10148: and hashrefs
10149:
10150: =item *
10151:
10152: str2hash($string) : convert string to hash using unescaping and
10153: splitting on '=' and '&', supports elements that are arrayrefs and
10154: hashrefs
10155:
10156: =item *
10157:
10158: str2array($string) : convert string to hash using unescaping and
10159: splitting on '&', supports elements that are arrayrefs and hashrefs
10160:
10161: =back
10162:
10163: =head2 Logging Routines
10164:
10165: =over 4
10166:
10167: These routines allow one to make log messages in the lonnet.log and
10168: lonnet.perm logfiles.
10169:
10170: =item *
10171:
10172: logtouch() : make sure the logfile, lonnet.log, exists
10173:
10174: =item *
10175:
10176: logthis() : append message to the normal lonnet.log file, it gets
10177: preiodically rolled over and deleted.
10178:
10179: =item *
10180:
10181: logperm() : append a permanent message to lonnet.perm.log, this log
10182: file never gets deleted by any automated portion of the system, only
10183: messages of critical importance should go in here.
10184:
10185: =back
10186:
10187: =head2 General File Helper Routines
10188:
10189: =over 4
10190:
10191: =item *
10192:
10193: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
10194: (a) files in /uploaded
10195: (i) If a local copy of the file exists -
10196: compares modification date of local copy with last-modified date for
10197: definitive version stored on home server for course. If local copy is
10198: stale, requests a new version from the home server and stores it.
10199: If the original has been removed from the home server, then local copy
10200: is unlinked.
10201: (ii) If local copy does not exist -
10202: requests the file from the home server and stores it.
10203:
10204: If $caller is 'uploadrep':
10205: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
10206: for request for files originally uploaded via DOCS.
10207: - returns 'ok' if fresh local copy now available, -1 otherwise.
10208:
10209: Otherwise:
10210: This indicates a call from the content generation phase of the request.
10211: - returns the entire contents of the file or -1.
10212:
10213: (b) files in /res
10214: - returns the entire contents of a file or -1;
10215: it properly subscribes to and replicates the file if neccessary.
10216:
10217:
10218: =item *
10219:
10220: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
10221: reference
10222:
10223: returns either a stat() list of data about the file or an empty list
10224: if the file doesn't exist or couldn't find out about it (connection
10225: problems or user unknown)
10226:
10227: =item *
10228:
10229: filelocation($dir,$file) : returns file system location of a file
10230: based on URI; meant to be "fairly clean" absolute reference, $dir is a
10231: directory that relative $file lookups are to looked in ($dir of /a/dir
10232: and a file of ../bob will become /a/bob)
10233:
10234: =item *
10235:
10236: hreflocation($dir,$file) : returns file system location or a URL; same as
10237: filelocation except for hrefs
10238:
10239: =item *
10240:
10241: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
10242:
10243: =back
10244:
10245: =head2 Usererfile file routines (/uploaded*)
10246:
10247: =over 4
10248:
10249: =item *
10250:
10251: userfileupload(): main rotine for putting a file in a user or course's
10252: filespace, arguments are,
10253:
10254: formname - required - this is the name of the element in $env where the
10255: filename, and the contents of the file to create/modifed exist
10256: the filename is in $env{'form.'.$formname.'.filename'} and the
10257: contents of the file is located in $env{'form.'.$formname}
10258: coursedoc - if true, store the file in the course of the active role
10259: of the current user
10260: subdir - required - subdirectory to put the file in under ../userfiles/
10261: if undefined, it will be placed in "unknown"
10262:
10263: (This routine calls clean_filename() to remove any dangerous
10264: characters from the filename, and then calls finuserfileupload() to
10265: complete the transaction)
10266:
10267: returns either the url of the uploaded file (/uploaded/....) if successful
10268: and /adm/notfound.html if unsuccessful
10269:
10270: =item *
10271:
10272: clean_filename(): routine for cleaing a filename up for storage in
10273: userfile space, argument is:
10274:
10275: filename - proposed filename
10276:
10277: returns: the new clean filename
10278:
10279: =item *
10280:
10281: finishuserfileupload(): routine that creaes and sends the file to
10282: userspace, probably shouldn't be called directly
10283:
10284: docuname: username or courseid of destination for the file
10285: docudom: domain of user/course of destination for the file
10286: formname: same as for userfileupload()
10287: fname: filename (inculding subdirectories) for the file
10288:
10289: returns either the url of the uploaded file (/uploaded/....) if successful
10290: and /adm/notfound.html if unsuccessful
10291:
10292: =item *
10293:
10294: renameuserfile(): renames an existing userfile to a new name
10295:
10296: Args:
10297: docuname: username or courseid of destination for the file
10298: docudom: domain of user/course of destination for the file
10299: old: current file name (including any subdirs under userfiles)
10300: new: desired file name (including any subdirs under userfiles)
10301:
10302: =item *
10303:
10304: mkdiruserfile(): creates a directory is a userfiles dir
10305:
10306: Args:
10307: docuname: username or courseid of destination for the file
10308: docudom: domain of user/course of destination for the file
10309: dir: dir to create (including any subdirs under userfiles)
10310:
10311: =item *
10312:
10313: removeuserfile(): removes a file that exists in userfiles
10314:
10315: Args:
10316: docuname: username or courseid of destination for the file
10317: docudom: domain of user/course of destination for the file
10318: fname: filname to delete (including any subdirs under userfiles)
10319:
10320: =item *
10321:
10322: removeuploadedurl(): convience function for removeuserfile()
10323:
10324: Args:
10325: url: a full /uploaded/... url to delete
10326:
10327: =item *
10328:
10329: get_portfile_permissions():
10330: Args:
10331: domain: domain of user or course contain the portfolio files
10332: user: name of user or num of course contain the portfolio files
10333: Returns:
10334: hashref of a dump of the proper file_permissions.db
10335:
10336:
10337: =item *
10338:
10339: get_access_controls():
10340:
10341: Args:
10342: current_permissions: the hash ref returned from get_portfile_permissions()
10343: group: (optional) the group you want the files associated with
10344: file: (optional) the file you want access info on
10345:
10346: Returns:
10347: a hash (keys are file names) of hashes containing
10348: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
10349: values are XML containing access control settings (see below)
10350:
10351: Internal notes:
10352:
10353: access controls are stored in file_permissions.db as key=value pairs.
10354: key -> path to file/file_name\0uniqueID:scope_end_start
10355: where scope -> public,guest,course,group,domains or users.
10356: end -> UNIX time for end of access (0 -> no end date)
10357: start -> UNIX time for start of access
10358:
10359: value -> XML description of access control
10360: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
10361: <start></start>
10362: <end></end>
10363:
10364: <password></password> for scope type = guest
10365:
10366: <domain></domain> for scope type = course or group
10367: <number></number>
10368: <roles id="">
10369: <role></role>
10370: <access></access>
10371: <section></section>
10372: <group></group>
10373: </roles>
10374:
10375: <dom></dom> for scope type = domains
10376:
10377: <users> for scope type = users
10378: <user>
10379: <uname></uname>
10380: <udom></udom>
10381: </user>
10382: </users>
10383: </scope>
10384:
10385: Access data is also aggregated for each file in an additional key=value pair:
10386: key -> path to file/file_name\0accesscontrol
10387: value -> reference to hash
10388: hash contains key = value pairs
10389: where key = uniqueID:scope_end_start
10390: value = UNIX time record was last updated
10391:
10392: Used to improve speed of look-ups of access controls for each file.
10393:
10394: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
10395:
10396: modify_access_controls():
10397:
10398: Modifies access controls for a portfolio file
10399: Args
10400: 1. file name
10401: 2. reference to hash of required changes,
10402: 3. domain
10403: 4. username
10404: where domain,username are the domain of the portfolio owner
10405: (either a user or a course)
10406:
10407: Returns:
10408: 1. result of additions or updates ('ok' or 'error', with error message).
10409: 2. result of deletions ('ok' or 'error', with error message).
10410: 3. reference to hash of any new or updated access controls.
10411: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
10412: key = integer (inbound ID)
10413: value = uniqueID
10414:
10415: =back
10416:
10417: =head2 HTTP Helper Routines
10418:
10419: =over 4
10420:
10421: =item *
10422:
10423: escape() : unpack non-word characters into CGI-compatible hex codes
10424:
10425: =item *
10426:
10427: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
10428:
10429: =back
10430:
10431: =head1 PRIVATE SUBROUTINES
10432:
10433: =head2 Underlying communication routines (Shouldn't call)
10434:
10435: =over 4
10436:
10437: =item *
10438:
10439: subreply() : tries to pass a message to lonc, returns con_lost if incapable
10440:
10441: =item *
10442:
10443: reply() : uses subreply to send a message to remote machine, logs all failures
10444:
10445: =item *
10446:
10447: critical() : passes a critical message to another server; if cannot
10448: get through then place message in connection buffer directory and
10449: returns con_delayed, if incapable of saving message, returns
10450: con_failed
10451:
10452: =item *
10453:
10454: reconlonc() : tries to reconnect lonc client processes.
10455:
10456: =back
10457:
10458: =head2 Resource Access Logging
10459:
10460: =over 4
10461:
10462: =item *
10463:
10464: flushcourselogs() : flush (save) buffer logs and access logs
10465:
10466: =item *
10467:
10468: courselog($what) : save message for course in hash
10469:
10470: =item *
10471:
10472: courseacclog($what) : save message for course using &courselog(). Perform
10473: special processing for specific resource types (problems, exams, quizzes, etc).
10474:
10475: =item *
10476:
10477: goodbye() : flush course logs and log shutting down; it is called in srm.conf
10478: as a PerlChildExitHandler
10479:
10480: =back
10481:
10482: =head2 Other
10483:
10484: =over 4
10485:
10486: =item *
10487:
10488: symblist($mapname,%newhash) : update symbolic storage links
10489:
10490: =back
10491:
10492: =cut
10493:
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