1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1044 2009/11/28 19:03:36 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 File::MMagic;
96: use LONCAPA qw(:DEFAULT :match);
97: use LONCAPA::Configuration;
98:
99: my $readit;
100: my $max_connection_retries = 10; # Or some such value.
101:
102: my $upload_photo_form = 0; #Variable to check when user upload a photo 0=not 1=true
103:
104: require Exporter;
105:
106: our @ISA = qw (Exporter);
107: our @EXPORT = qw(%env);
108:
109:
110: # --------------------------------------------------------------------- Logging
111: {
112: my $logid;
113: sub instructor_log {
114: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
115: if (($cnum eq '') || ($cdom eq '')) {
116: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
117: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
118: }
119: $logid++;
120: my $now = time();
121: my $id=$now.'00000'.$$.'00000'.$logid;
122: return &Apache::lonnet::put('nohist_'.$hash_name,
123: { $id => {
124: 'exe_uname' => $env{'user.name'},
125: 'exe_udom' => $env{'user.domain'},
126: 'exe_time' => $now,
127: 'exe_ip' => $ENV{'REMOTE_ADDR'},
128: 'delflag' => $delflag,
129: 'logentry' => $storehash,
130: 'uname' => $uname,
131: 'udom' => $udom,
132: }
133: },$cdom,$cnum);
134: }
135: }
136:
137: sub logtouch {
138: my $execdir=$perlvar{'lonDaemons'};
139: unless (-e "$execdir/logs/lonnet.log") {
140: open(my $fh,">>$execdir/logs/lonnet.log");
141: close $fh;
142: }
143: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
144: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
145: }
146:
147: sub logthis {
148: my $message=shift;
149: my $execdir=$perlvar{'lonDaemons'};
150: my $now=time;
151: my $local=localtime($now);
152: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
153: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
154: print $fh $logstring;
155: close($fh);
156: }
157: return 1;
158: }
159:
160: sub logperm {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
166: print $fh "$now:$message:$local\n";
167: close($fh);
168: }
169: return 1;
170: }
171:
172: sub create_connection {
173: my ($hostname,$lonid) = @_;
174: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
175: Type => SOCK_STREAM,
176: Timeout => 10);
177: return 0 if (!$client);
178: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
179: my $result = <$client>;
180: chomp($result);
181: return 1 if ($result eq 'done');
182: return 0;
183: }
184:
185: sub get_server_timezone {
186: my ($cnum,$cdom) = @_;
187: my $home=&homeserver($cnum,$cdom);
188: if ($home ne 'no_host') {
189: my $cachetime = 24*3600;
190: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
191: if (defined($cached)) {
192: return $timezone;
193: } else {
194: my $timezone = &reply('servertimezone',$home);
195: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
196: }
197: }
198: }
199:
200: sub get_server_loncaparev {
201: my ($dom,$lonhost) = @_;
202: if (defined($lonhost)) {
203: if (!defined(&hostname($lonhost))) {
204: undef($lonhost);
205: }
206: }
207: if (!defined($lonhost)) {
208: if (defined(&domain($dom,'primary'))) {
209: $lonhost=&domain($dom,'primary');
210: if ($lonhost eq 'no_host') {
211: undef($lonhost);
212: }
213: }
214: }
215: if (defined($lonhost)) {
216: my $cachetime = 24*3600;
217: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
218: if (defined($cached)) {
219: return $loncaparev;
220: } else {
221: my $loncaparev = &reply('serverloncaparev',$lonhost);
222: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
223: }
224: }
225: }
226:
227: # -------------------------------------------------- Non-critical communication
228: sub subreply {
229: my ($cmd,$server)=@_;
230: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
231: #
232: # With loncnew process trimming, there's a timing hole between lonc server
233: # process exit and the master server picking up the listen on the AF_UNIX
234: # socket. In that time interval, a lock file will exist:
235:
236: my $lockfile=$peerfile.".lock";
237: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
238: sleep(1);
239: }
240: # At this point, either a loncnew parent is listening or an old lonc
241: # or loncnew child is listening so we can connect or everything's dead.
242: #
243: # We'll give the connection a few tries before abandoning it. If
244: # connection is not possible, we'll con_lost back to the client.
245: #
246: my $client;
247: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
248: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
249: Type => SOCK_STREAM,
250: Timeout => 10);
251: if ($client) {
252: last; # Connected!
253: } else {
254: &create_connection(&hostname($server),$server);
255: }
256: sleep(1); # Try again later if failed connection.
257: }
258: my $answer;
259: if ($client) {
260: print $client "sethost:$server:$cmd\n";
261: $answer=<$client>;
262: if (!$answer) { $answer="con_lost"; }
263: chomp($answer);
264: } else {
265: $answer = 'con_lost'; # Failed connection.
266: }
267: return $answer;
268: }
269:
270: sub reply {
271: my ($cmd,$server)=@_;
272: unless (defined(&hostname($server))) { return 'no_such_host'; }
273: my $answer=subreply($cmd,$server);
274: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
275: &logthis("<font color=\"blue\">WARNING:".
276: " $cmd to $server returned $answer</font>");
277: }
278: return $answer;
279: }
280:
281: # ----------------------------------------------------------- Send USR1 to lonc
282:
283: sub reconlonc {
284: my ($lonid) = @_;
285: my $hostname = &hostname($lonid);
286: if ($lonid) {
287: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
288: if ($hostname && -e $peerfile) {
289: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
290: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
291: Type => SOCK_STREAM,
292: Timeout => 10);
293: if ($client) {
294: print $client ("reset_retries\n");
295: my $answer=<$client>;
296: #reset just this one.
297: }
298: }
299: return;
300: }
301:
302: &logthis("Trying to reconnect lonc");
303: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
304: if (open(my $fh,"<$loncfile")) {
305: my $loncpid=<$fh>;
306: chomp($loncpid);
307: if (kill 0 => $loncpid) {
308: &logthis("lonc at pid $loncpid responding, sending USR1");
309: kill USR1 => $loncpid;
310: sleep 1;
311: } else {
312: &logthis(
313: "<font color=\"blue\">WARNING:".
314: " lonc at pid $loncpid not responding, giving up</font>");
315: }
316: } else {
317: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
318: }
319: }
320:
321: # ------------------------------------------------------ Critical communication
322:
323: sub critical {
324: my ($cmd,$server)=@_;
325: unless (&hostname($server)) {
326: &logthis("<font color=\"blue\">WARNING:".
327: " Critical message to unknown server ($server)</font>");
328: return 'no_such_host';
329: }
330: my $answer=reply($cmd,$server);
331: if ($answer eq 'con_lost') {
332: &reconlonc("$perlvar{'lonSockDir'}/$server");
333: my $answer=reply($cmd,$server);
334: if ($answer eq 'con_lost') {
335: my $now=time;
336: my $middlename=$cmd;
337: $middlename=substr($middlename,0,16);
338: $middlename=~s/\W//g;
339: my $dfilename=
340: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
341: $dumpcount++;
342: {
343: my $dfh;
344: if (open($dfh,">$dfilename")) {
345: print $dfh "$cmd\n";
346: close($dfh);
347: }
348: }
349: sleep 2;
350: my $wcmd='';
351: {
352: my $dfh;
353: if (open($dfh,"<$dfilename")) {
354: $wcmd=<$dfh>;
355: close($dfh);
356: }
357: }
358: chomp($wcmd);
359: if ($wcmd eq $cmd) {
360: &logthis("<font color=\"blue\">WARNING: ".
361: "Connection buffer $dfilename: $cmd</font>");
362: &logperm("D:$server:$cmd");
363: return 'con_delayed';
364: } else {
365: &logthis("<font color=\"red\">CRITICAL:"
366: ." Critical connection failed: $server $cmd</font>");
367: &logperm("F:$server:$cmd");
368: return 'con_failed';
369: }
370: }
371: }
372: return $answer;
373: }
374:
375: # ------------------------------------------- check if return value is an error
376:
377: sub error {
378: my ($result) = @_;
379: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
380: if ($2 == 2) { return undef; }
381: return $1;
382: }
383: return undef;
384: }
385:
386: sub convert_and_load_session_env {
387: my ($lonidsdir,$handle)=@_;
388: my @profile;
389: {
390: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
391: if (!$opened) {
392: return 0;
393: }
394: flock($idf,LOCK_SH);
395: @profile=<$idf>;
396: close($idf);
397: }
398: my %temp_env;
399: foreach my $line (@profile) {
400: if ($line !~ m/=/) {
401: return 0;
402: }
403: chomp($line);
404: my ($envname,$envvalue)=split(/=/,$line,2);
405: $temp_env{&unescape($envname)} = &unescape($envvalue);
406: }
407: unlink("$lonidsdir/$handle.id");
408: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
409: 0640)) {
410: %disk_env = %temp_env;
411: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
412: untie(%disk_env);
413: }
414: return 1;
415: }
416:
417: # ------------------------------------------- Transfer profile into environment
418: my $env_loaded;
419: sub transfer_profile_to_env {
420: my ($lonidsdir,$handle,$force_transfer) = @_;
421: if (!$force_transfer && $env_loaded) { return; }
422:
423: if (!defined($lonidsdir)) {
424: $lonidsdir = $perlvar{'lonIDsDir'};
425: }
426: if (!defined($handle)) {
427: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
428: }
429:
430: my $convert;
431: {
432: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
433: if (!$opened) {
434: return;
435: }
436: flock($idf,LOCK_SH);
437: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
438: &GDBM_READER(),0640)) {
439: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
440: untie(%disk_env);
441: } else {
442: $convert = 1;
443: }
444: }
445: if ($convert) {
446: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
447: &logthis("Failed to load session, or convert session.");
448: }
449: }
450:
451: my %remove;
452: while ( my $envname = each(%env) ) {
453: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
454: if ($time < time-300) {
455: $remove{$key}++;
456: }
457: }
458: }
459:
460: $env{'user.environment'} = "$lonidsdir/$handle.id";
461: $env_loaded=1;
462: foreach my $expired_key (keys(%remove)) {
463: &delenv($expired_key);
464: }
465: }
466:
467: # ---------------------------------------------------- Check for valid session
468: sub check_for_valid_session {
469: my ($r) = @_;
470: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
471: my $lonid=$cookies{'lonID'};
472: return undef if (!$lonid);
473:
474: my $handle=&LONCAPA::clean_handle($lonid->value);
475: my $lonidsdir=$r->dir_config('lonIDsDir');
476: return undef if (!-e "$lonidsdir/$handle.id");
477:
478: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
479: return undef if (!$opened);
480:
481: flock($idf,LOCK_SH);
482: my %disk_env;
483: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
484: &GDBM_READER(),0640)) {
485: return undef;
486: }
487:
488: if (!defined($disk_env{'user.name'})
489: || !defined($disk_env{'user.domain'})) {
490: return undef;
491: }
492: return $handle;
493: }
494:
495: sub timed_flock {
496: my ($file,$lock_type) = @_;
497: my $failed=0;
498: eval {
499: local $SIG{__DIE__}='DEFAULT';
500: local $SIG{ALRM}=sub {
501: $failed=1;
502: die("failed lock");
503: };
504: alarm(13);
505: flock($file,$lock_type);
506: alarm(0);
507: };
508: if ($failed) {
509: return undef;
510: } else {
511: return 1;
512: }
513: }
514:
515: # ---------------------------------------------------------- Append Environment
516:
517: sub appenv {
518: my ($newenv,$roles) = @_;
519: if (ref($newenv) eq 'HASH') {
520: foreach my $key (keys(%{$newenv})) {
521: my $refused = 0;
522: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
523: $refused = 1;
524: if (ref($roles) eq 'ARRAY') {
525: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
526: if (grep(/^\Q$role\E$/,@{$roles})) {
527: $refused = 0;
528: }
529: }
530: }
531: if ($refused) {
532: &logthis("<font color=\"blue\">WARNING: ".
533: "Attempt to modify environment ".$key." to ".$newenv->{$key}
534: .'</font>');
535: delete($newenv->{$key});
536: } else {
537: $env{$key}=$newenv->{$key};
538: }
539: }
540: my $opened = open(my $env_file,'+<',$env{'user.environment'});
541: if ($opened
542: && &timed_flock($env_file,LOCK_EX)
543: &&
544: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
545: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
546: while (my ($key,$value) = each(%{$newenv})) {
547: $disk_env{$key} = $value;
548: }
549: untie(%disk_env);
550: }
551: }
552: return 'ok';
553: }
554: # ----------------------------------------------------- Delete from Environment
555:
556: sub delenv {
557: my ($delthis,$regexp) = @_;
558: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
559: &logthis("<font color=\"blue\">WARNING: ".
560: "Attempt to delete from environment ".$delthis);
561: return 'error';
562: }
563: my $opened = open(my $env_file,'+<',$env{'user.environment'});
564: if ($opened
565: && &timed_flock($env_file,LOCK_EX)
566: &&
567: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
568: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
569: foreach my $key (keys(%disk_env)) {
570: if ($regexp) {
571: if ($key=~/^$delthis/) {
572: delete($env{$key});
573: delete($disk_env{$key});
574: }
575: } else {
576: if ($key=~/^\Q$delthis\E/) {
577: delete($env{$key});
578: delete($disk_env{$key});
579: }
580: }
581: }
582: untie(%disk_env);
583: }
584: return 'ok';
585: }
586:
587: sub get_env_multiple {
588: my ($name) = @_;
589: my @values;
590: if (defined($env{$name})) {
591: # exists is it an array
592: if (ref($env{$name})) {
593: @values=@{ $env{$name} };
594: } else {
595: $values[0]=$env{$name};
596: }
597: }
598: return(@values);
599: }
600:
601: # ------------------------------------------------------------------- Locking
602:
603: sub set_lock {
604: my ($text)=@_;
605: $locknum++;
606: my $id=$$.'-'.$locknum;
607: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
608: 'session.lock.'.$id => $text});
609: return $id;
610: }
611:
612: sub get_locks {
613: my $num=0;
614: my %texts=();
615: foreach my $lock (split(/\,/,$env{'session.locks'})) {
616: if ($lock=~/\w/) {
617: $num++;
618: $texts{$lock}=$env{'session.lock.'.$lock};
619: }
620: }
621: return ($num,%texts);
622: }
623:
624: sub remove_lock {
625: my ($id)=@_;
626: my $newlocks='';
627: foreach my $lock (split(/\,/,$env{'session.locks'})) {
628: if (($lock=~/\w/) && ($lock ne $id)) {
629: $newlocks.=','.$lock;
630: }
631: }
632: &appenv({'session.locks' => $newlocks});
633: &delenv('session.lock.'.$id);
634: }
635:
636: sub remove_all_locks {
637: my $activelocks=$env{'session.locks'};
638: foreach my $lock (split(/\,/,$env{'session.locks'})) {
639: if ($lock=~/\w/) {
640: &remove_lock($lock);
641: }
642: }
643: }
644:
645:
646: # ------------------------------------------ Find out current server userload
647: sub userload {
648: my $numusers=0;
649: {
650: opendir(LONIDS,$perlvar{'lonIDsDir'});
651: my $filename;
652: my $curtime=time;
653: while ($filename=readdir(LONIDS)) {
654: next if ($filename eq '.' || $filename eq '..');
655: next if ($filename =~ /publicuser_\d+\.id/);
656: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
657: if ($curtime-$mtime < 1800) { $numusers++; }
658: }
659: closedir(LONIDS);
660: }
661: my $userloadpercent=0;
662: my $maxuserload=$perlvar{'lonUserLoadLim'};
663: if ($maxuserload) {
664: $userloadpercent=100*$numusers/$maxuserload;
665: }
666: $userloadpercent=sprintf("%.2f",$userloadpercent);
667: return $userloadpercent;
668: }
669:
670: # ------------------------------------------ Fight off request when overloaded
671:
672: sub overloaderror {
673: my ($r,$checkserver)=@_;
674: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
675: my $loadavg;
676: if ($checkserver eq $perlvar{'lonHostID'}) {
677: open(my $loadfile,'/proc/loadavg');
678: $loadavg=<$loadfile>;
679: $loadavg =~ s/\s.*//g;
680: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
681: close($loadfile);
682: } else {
683: $loadavg=&reply('load',$checkserver);
684: }
685: my $overload=$loadavg-100;
686: if ($overload>0) {
687: $r->err_headers_out->{'Retry-After'}=$overload;
688: $r->log_error('Overload of '.$overload.' on '.$checkserver);
689: return 413;
690: }
691: return '';
692: }
693:
694: # ------------------------------ Find server with least workload from spare.tab
695:
696: sub spareserver {
697: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
698: my $spare_server;
699: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
700: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
701: : $userloadpercent;
702:
703: foreach my $try_server (@{ $spareid{'primary'} }) {
704: ($spare_server, $lowest_load) =
705: &compare_server_load($try_server, $spare_server, $lowest_load);
706: }
707:
708: my $found_server = ($spare_server ne '' && $lowest_load < 100);
709:
710: if (!$found_server) {
711: foreach my $try_server (@{ $spareid{'default'} }) {
712: ($spare_server, $lowest_load) =
713: &compare_server_load($try_server, $spare_server, $lowest_load);
714: }
715: }
716:
717: if (!$want_server_name) {
718: my $protocol = 'http';
719: if ($protocol{$spare_server} eq 'https') {
720: $protocol = $protocol{$spare_server};
721: }
722: if (defined($spare_server)) {
723: my $hostname = &hostname($spare_server);
724: if (defined($hostname)) {
725: $spare_server = $protocol.'://'.$hostname;
726: }
727: }
728: }
729: return $spare_server;
730: }
731:
732: sub compare_server_load {
733: my ($try_server, $spare_server, $lowest_load) = @_;
734:
735: my $loadans = &reply('load', $try_server);
736: my $userloadans = &reply('userload',$try_server);
737:
738: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
739: next; #didn't get a number from the server
740: }
741:
742: my $load;
743: if ($loadans =~ /\d/) {
744: if ($userloadans =~ /\d/) {
745: #both are numbers, pick the bigger one
746: $load = ($loadans > $userloadans) ? $loadans
747: : $userloadans;
748: } else {
749: $load = $loadans;
750: }
751: } else {
752: $load = $userloadans;
753: }
754:
755: if (($load =~ /\d/) && ($load < $lowest_load)) {
756: $spare_server = $try_server;
757: $lowest_load = $load;
758: }
759: return ($spare_server,$lowest_load);
760: }
761:
762: # --------------------------- ask offload servers if user already has a session
763: sub find_existing_session {
764: my ($udom,$uname) = @_;
765: foreach my $try_server (@{ $spareid{'primary'} },
766: @{ $spareid{'default'} }) {
767: return $try_server if (&has_user_session($try_server, $udom, $uname));
768: }
769: return;
770: }
771:
772: # -------------------------------- ask if server already has a session for user
773: sub has_user_session {
774: my ($lonid,$udom,$uname) = @_;
775: my $result = &reply(join(':','userhassession',
776: map {&escape($_)} ($udom,$uname)),$lonid);
777: return 1 if ($result eq 'ok');
778:
779: return 0;
780: }
781:
782: # --------------------------------------------- Try to change a user's password
783:
784: sub changepass {
785: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
786: $currentpass = &escape($currentpass);
787: $newpass = &escape($newpass);
788: my $lonhost = $perlvar{'lonHostID'};
789: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
790: $server);
791: if (! $answer) {
792: &logthis("No reply on password change request to $server ".
793: "by $uname in domain $udom.");
794: } elsif ($answer =~ "^ok") {
795: &logthis("$uname in $udom successfully changed their password ".
796: "on $server.");
797: } elsif ($answer =~ "^pwchange_failure") {
798: &logthis("$uname in $udom was unable to change their password ".
799: "on $server. The action was blocked by either lcpasswd ".
800: "or pwchange");
801: } elsif ($answer =~ "^non_authorized") {
802: &logthis("$uname in $udom did not get their password correct when ".
803: "attempting to change it on $server.");
804: } elsif ($answer =~ "^auth_mode_error") {
805: &logthis("$uname in $udom attempted to change their password despite ".
806: "not being locally or internally authenticated on $server.");
807: } elsif ($answer =~ "^unknown_user") {
808: &logthis("$uname in $udom attempted to change their password ".
809: "on $server but were unable to because $server is not ".
810: "their home server.");
811: } elsif ($answer =~ "^refused") {
812: &logthis("$server refused to change $uname in $udom password because ".
813: "it was sent an unencrypted request to change the password.");
814: } elsif ($answer =~ "invalid_client") {
815: &logthis("$server refused to change $uname in $udom password because ".
816: "it was a reset by e-mail originating from an invalid server.");
817: }
818: return $answer;
819: }
820:
821: # ----------------------- Try to determine user's current authentication scheme
822:
823: sub queryauthenticate {
824: my ($uname,$udom)=@_;
825: my $uhome=&homeserver($uname,$udom);
826: if (!$uhome) {
827: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
828: return 'no_host';
829: }
830: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
831: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
832: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
833: }
834: return $answer;
835: }
836:
837: # --------- Try to authenticate user from domain's lib servers (first this one)
838:
839: sub authenticate {
840: my ($uname,$upass,$udom,$checkdefauth)=@_;
841: $upass=&escape($upass);
842: $uname= &LONCAPA::clean_username($uname);
843: my $uhome=&homeserver($uname,$udom,1);
844: my $newhome;
845: if ((!$uhome) || ($uhome eq 'no_host')) {
846: # Maybe the machine was offline and only re-appeared again recently?
847: &reconlonc();
848: # One more
849: $uhome=&homeserver($uname,$udom,1);
850: if (($uhome eq 'no_host') && $checkdefauth) {
851: if (defined(&domain($udom,'primary'))) {
852: $newhome=&domain($udom,'primary');
853: }
854: if ($newhome ne '') {
855: $uhome = $newhome;
856: }
857: }
858: if ((!$uhome) || ($uhome eq 'no_host')) {
859: &logthis("User $uname at $udom is unknown in authenticate");
860: return 'no_host';
861: }
862: }
863: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
864: if ($answer eq 'authorized') {
865: if ($newhome) {
866: &logthis("User $uname at $udom authorized by $uhome, but needs account");
867: return 'no_account_on_host';
868: } else {
869: &logthis("User $uname at $udom authorized by $uhome");
870: return $uhome;
871: }
872: }
873: if ($answer eq 'non_authorized') {
874: &logthis("User $uname at $udom rejected by $uhome");
875: return 'no_host';
876: }
877: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
878: return 'no_host';
879: }
880:
881: # ---------------------- Find the homebase for a user from domain's lib servers
882:
883: my %homecache;
884: sub homeserver {
885: my ($uname,$udom,$ignoreBadCache)=@_;
886: my $index="$uname:$udom";
887:
888: if (exists($homecache{$index})) { return $homecache{$index}; }
889:
890: my %servers = &get_servers($udom,'library');
891: foreach my $tryserver (keys(%servers)) {
892: next if ($ignoreBadCache ne 'true' &&
893: exists($badServerCache{$tryserver}));
894:
895: my $answer=reply("home:$udom:$uname",$tryserver);
896: if ($answer eq 'found') {
897: delete($badServerCache{$tryserver});
898: return $homecache{$index}=$tryserver;
899: } elsif ($answer eq 'no_host') {
900: $badServerCache{$tryserver}=1;
901: }
902: }
903: return 'no_host';
904: }
905:
906: # ------------------------------------- Find the usernames behind a list of IDs
907:
908: sub idget {
909: my ($udom,@ids)=@_;
910: my %returnhash=();
911:
912: my %servers = &get_servers($udom,'library');
913: foreach my $tryserver (keys(%servers)) {
914: my $idlist=join('&',@ids);
915: $idlist=~tr/A-Z/a-z/;
916: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
917: my @answer=();
918: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
919: @answer=split(/\&/,$reply);
920: } ;
921: my $i;
922: for ($i=0;$i<=$#ids;$i++) {
923: if ($answer[$i]) {
924: $returnhash{$ids[$i]}=$answer[$i];
925: }
926: }
927: }
928: return %returnhash;
929: }
930:
931: # ------------------------------------- Find the IDs behind a list of usernames
932:
933: sub idrget {
934: my ($udom,@unames)=@_;
935: my %returnhash=();
936: foreach my $uname (@unames) {
937: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
938: }
939: return %returnhash;
940: }
941:
942: # ------------------------------- Store away a list of names and associated IDs
943:
944: sub idput {
945: my ($udom,%ids)=@_;
946: my %servers=();
947: foreach my $uname (keys(%ids)) {
948: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
949: my $uhom=&homeserver($uname,$udom);
950: if ($uhom ne 'no_host') {
951: my $id=&escape($ids{$uname});
952: $id=~tr/A-Z/a-z/;
953: my $esc_unam=&escape($uname);
954: if ($servers{$uhom}) {
955: $servers{$uhom}.='&'.$id.'='.$esc_unam;
956: } else {
957: $servers{$uhom}=$id.'='.$esc_unam;
958: }
959: }
960: }
961: foreach my $server (keys(%servers)) {
962: &critical('idput:'.$udom.':'.$servers{$server},$server);
963: }
964: }
965:
966: # ------------------------------dump from db file owned by domainconfig user
967: sub dump_dom {
968: my ($namespace,$udom,$regexp,$range)=@_;
969: if (!$udom) {
970: $udom=$env{'user.domain'};
971: }
972: my %returnhash;
973: if ($udom) {
974: my $uname = &get_domainconfiguser($udom);
975: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
976: }
977: return %returnhash;
978: }
979:
980: # ------------------------------------------ get items from domain db files
981:
982: sub get_dom {
983: my ($namespace,$storearr,$udom,$uhome)=@_;
984: my $items='';
985: foreach my $item (@$storearr) {
986: $items.=&escape($item).'&';
987: }
988: $items=~s/\&$//;
989: if (!$udom) {
990: $udom=$env{'user.domain'};
991: if (defined(&domain($udom,'primary'))) {
992: $uhome=&domain($udom,'primary');
993: } else {
994: undef($uhome);
995: }
996: } else {
997: if (!$uhome) {
998: if (defined(&domain($udom,'primary'))) {
999: $uhome=&domain($udom,'primary');
1000: }
1001: }
1002: }
1003: if ($udom && $uhome && ($uhome ne 'no_host')) {
1004: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1005: my %returnhash;
1006: if ($rep eq '' || $rep =~ /^error: 2 /) {
1007: return %returnhash;
1008: }
1009: my @pairs=split(/\&/,$rep);
1010: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1011: return @pairs;
1012: }
1013: my $i=0;
1014: foreach my $item (@$storearr) {
1015: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1016: $i++;
1017: }
1018: return %returnhash;
1019: } else {
1020: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1021: }
1022: }
1023:
1024: # -------------------------------------------- put items in domain db files
1025:
1026: sub put_dom {
1027: my ($namespace,$storehash,$udom,$uhome)=@_;
1028: if (!$udom) {
1029: $udom=$env{'user.domain'};
1030: if (defined(&domain($udom,'primary'))) {
1031: $uhome=&domain($udom,'primary');
1032: } else {
1033: undef($uhome);
1034: }
1035: } else {
1036: if (!$uhome) {
1037: if (defined(&domain($udom,'primary'))) {
1038: $uhome=&domain($udom,'primary');
1039: }
1040: }
1041: }
1042: if ($udom && $uhome && ($uhome ne 'no_host')) {
1043: my $items='';
1044: foreach my $item (keys(%$storehash)) {
1045: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1046: }
1047: $items=~s/\&$//;
1048: return &reply("putdom:$udom:$namespace:$items",$uhome);
1049: } else {
1050: &logthis("put_dom failed - no homeserver and/or domain");
1051: }
1052: }
1053:
1054: # --------------------- newput for items in db file owned by domainconfig user
1055: sub newput_dom {
1056: my ($namespace,$storehash,$udom) = @_;
1057: my $result;
1058: if (!$udom) {
1059: $udom=$env{'user.domain'};
1060: }
1061: if ($udom) {
1062: my $uname = &get_domainconfiguser($udom);
1063: $result = &newput($namespace,$storehash,$udom,$uname);
1064: }
1065: return $result;
1066: }
1067:
1068: # --------------------- delete for items in db file owned by domainconfig user
1069: sub del_dom {
1070: my ($namespace,$storearr,$udom)=@_;
1071: if (ref($storearr) eq 'ARRAY') {
1072: if (!$udom) {
1073: $udom=$env{'user.domain'};
1074: }
1075: if ($udom) {
1076: my $uname = &get_domainconfiguser($udom);
1077: return &del($namespace,$storearr,$udom,$uname);
1078: }
1079: }
1080: }
1081:
1082: # ----------------------------------construct domainconfig user for a domain
1083: sub get_domainconfiguser {
1084: my ($udom) = @_;
1085: return $udom.'-domainconfig';
1086: }
1087:
1088: sub retrieve_inst_usertypes {
1089: my ($udom) = @_;
1090: my (%returnhash,@order);
1091: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1092: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1093: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1094: %returnhash = %{$domdefs{'inststatustypes'}};
1095: @order = @{$domdefs{'inststatusorder'}};
1096: } else {
1097: if (defined(&domain($udom,'primary'))) {
1098: my $uhome=&domain($udom,'primary');
1099: my $rep=&reply("inst_usertypes:$udom",$uhome);
1100: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1101: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1102: return (\%returnhash,\@order);
1103: }
1104: my ($hashitems,$orderitems) = split(/:/,$rep);
1105: my @pairs=split(/\&/,$hashitems);
1106: foreach my $item (@pairs) {
1107: my ($key,$value)=split(/=/,$item,2);
1108: $key = &unescape($key);
1109: next if ($key =~ /^error: 2 /);
1110: $returnhash{$key}=&thaw_unescape($value);
1111: }
1112: my @esc_order = split(/\&/,$orderitems);
1113: foreach my $item (@esc_order) {
1114: push(@order,&unescape($item));
1115: }
1116: } else {
1117: &logthis("get_dom failed - no primary domain server for $udom");
1118: }
1119: }
1120: return (\%returnhash,\@order);
1121: }
1122:
1123: sub is_domainimage {
1124: my ($url) = @_;
1125: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1126: if (&domain($1) ne '') {
1127: return '1';
1128: }
1129: }
1130: return;
1131: }
1132:
1133: sub inst_directory_query {
1134: my ($srch) = @_;
1135: my $udom = $srch->{'srchdomain'};
1136: my %results;
1137: my $homeserver = &domain($udom,'primary');
1138: my $outcome;
1139: if ($homeserver ne '') {
1140: my $queryid=&reply("querysend:instdirsearch:".
1141: &escape($srch->{'srchby'}).':'.
1142: &escape($srch->{'srchterm'}).':'.
1143: &escape($srch->{'srchtype'}),$homeserver);
1144: my $host=&hostname($homeserver);
1145: if ($queryid !~/^\Q$host\E\_/) {
1146: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1147: return;
1148: }
1149: my $response = &get_query_reply($queryid);
1150: my $maxtries = 5;
1151: my $tries = 1;
1152: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1153: $response = &get_query_reply($queryid);
1154: $tries ++;
1155: }
1156:
1157: if (!&error($response) && $response ne 'refused') {
1158: if ($response eq 'unavailable') {
1159: $outcome = $response;
1160: } else {
1161: $outcome = 'ok';
1162: my @matches = split(/\n/,$response);
1163: foreach my $match (@matches) {
1164: my ($key,$value) = split(/=/,$match);
1165: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1166: }
1167: }
1168: }
1169: }
1170: return ($outcome,%results);
1171: }
1172:
1173: sub usersearch {
1174: my ($srch) = @_;
1175: my $dom = $srch->{'srchdomain'};
1176: my %results;
1177: my %libserv = &all_library();
1178: my $query = 'usersearch';
1179: foreach my $tryserver (keys(%libserv)) {
1180: if (&host_domain($tryserver) eq $dom) {
1181: my $host=&hostname($tryserver);
1182: my $queryid=
1183: &reply("querysend:".&escape($query).':'.
1184: &escape($srch->{'srchby'}).':'.
1185: &escape($srch->{'srchtype'}).':'.
1186: &escape($srch->{'srchterm'}),$tryserver);
1187: if ($queryid !~/^\Q$host\E\_/) {
1188: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1189: next;
1190: }
1191: my $reply = &get_query_reply($queryid);
1192: my $maxtries = 1;
1193: my $tries = 1;
1194: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1195: $reply = &get_query_reply($queryid);
1196: $tries ++;
1197: }
1198: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1199: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1200: } else {
1201: my @matches;
1202: if ($reply =~ /\n/) {
1203: @matches = split(/\n/,$reply);
1204: } else {
1205: @matches = split(/\&/,$reply);
1206: }
1207: foreach my $match (@matches) {
1208: my ($uname,$udom,%userhash);
1209: foreach my $entry (split(/:/,$match)) {
1210: my ($key,$value) =
1211: map {&unescape($_);} split(/=/,$entry);
1212: $userhash{$key} = $value;
1213: if ($key eq 'username') {
1214: $uname = $value;
1215: } elsif ($key eq 'domain') {
1216: $udom = $value;
1217: }
1218: }
1219: $results{$uname.':'.$udom} = \%userhash;
1220: }
1221: }
1222: }
1223: }
1224: return %results;
1225: }
1226:
1227: sub get_instuser {
1228: my ($udom,$uname,$id) = @_;
1229: my $homeserver = &domain($udom,'primary');
1230: my ($outcome,%results);
1231: if ($homeserver ne '') {
1232: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1233: &escape($id).':'.&escape($udom),$homeserver);
1234: my $host=&hostname($homeserver);
1235: if ($queryid !~/^\Q$host\E\_/) {
1236: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1237: return;
1238: }
1239: my $response = &get_query_reply($queryid);
1240: my $maxtries = 5;
1241: my $tries = 1;
1242: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1243: $response = &get_query_reply($queryid);
1244: $tries ++;
1245: }
1246: if (!&error($response) && $response ne 'refused') {
1247: if ($response eq 'unavailable') {
1248: $outcome = $response;
1249: } else {
1250: $outcome = 'ok';
1251: my @matches = split(/\n/,$response);
1252: foreach my $match (@matches) {
1253: my ($key,$value) = split(/=/,$match);
1254: $results{&unescape($key)} = &thaw_unescape($value);
1255: }
1256: }
1257: }
1258: }
1259: my %userinfo;
1260: if (ref($results{$uname}) eq 'HASH') {
1261: %userinfo = %{$results{$uname}};
1262: }
1263: return ($outcome,%userinfo);
1264: }
1265:
1266: sub inst_rulecheck {
1267: my ($udom,$uname,$id,$item,$rules) = @_;
1268: my %returnhash;
1269: if ($udom ne '') {
1270: if (ref($rules) eq 'ARRAY') {
1271: @{$rules} = map {&escape($_);} (@{$rules});
1272: my $rulestr = join(':',@{$rules});
1273: my $homeserver=&domain($udom,'primary');
1274: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1275: my $response;
1276: if ($item eq 'username') {
1277: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1278: ':'.&escape($uname).':'.$rulestr,
1279: $homeserver));
1280: } elsif ($item eq 'id') {
1281: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1282: ':'.&escape($id).':'.$rulestr,
1283: $homeserver));
1284: } elsif ($item eq 'selfcreate') {
1285: $response=&unescape(&reply('instselfcreatecheck:'.
1286: &escape($udom).':'.&escape($uname).
1287: ':'.$rulestr,$homeserver));
1288: }
1289: if ($response ne 'refused') {
1290: my @pairs=split(/\&/,$response);
1291: foreach my $item (@pairs) {
1292: my ($key,$value)=split(/=/,$item,2);
1293: $key = &unescape($key);
1294: next if ($key =~ /^error: 2 /);
1295: $returnhash{$key}=&thaw_unescape($value);
1296: }
1297: }
1298: }
1299: }
1300: }
1301: return %returnhash;
1302: }
1303:
1304: sub inst_userrules {
1305: my ($udom,$check) = @_;
1306: my (%ruleshash,@ruleorder);
1307: if ($udom ne '') {
1308: my $homeserver=&domain($udom,'primary');
1309: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1310: my $response;
1311: if ($check eq 'id') {
1312: $response=&reply('instidrules:'.&escape($udom),
1313: $homeserver);
1314: } elsif ($check eq 'email') {
1315: $response=&reply('instemailrules:'.&escape($udom),
1316: $homeserver);
1317: } else {
1318: $response=&reply('instuserrules:'.&escape($udom),
1319: $homeserver);
1320: }
1321: if (($response ne 'refused') && ($response ne 'error') &&
1322: ($response ne 'unknown_cmd') &&
1323: ($response ne 'no_such_host')) {
1324: my ($hashitems,$orderitems) = split(/:/,$response);
1325: my @pairs=split(/\&/,$hashitems);
1326: foreach my $item (@pairs) {
1327: my ($key,$value)=split(/=/,$item,2);
1328: $key = &unescape($key);
1329: next if ($key =~ /^error: 2 /);
1330: $ruleshash{$key}=&thaw_unescape($value);
1331: }
1332: my @esc_order = split(/\&/,$orderitems);
1333: foreach my $item (@esc_order) {
1334: push(@ruleorder,&unescape($item));
1335: }
1336: }
1337: }
1338: }
1339: return (\%ruleshash,\@ruleorder);
1340: }
1341:
1342: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1343:
1344: sub get_domain_defaults {
1345: my ($domain) = @_;
1346: my $cachetime = 60*60*24;
1347: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1348: if (defined($cached)) {
1349: if (ref($result) eq 'HASH') {
1350: return %{$result};
1351: }
1352: }
1353: my %domdefaults;
1354: my %domconfig =
1355: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1356: 'requestcourses','inststatus'],$domain);
1357: if (ref($domconfig{'defaults'}) eq 'HASH') {
1358: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1359: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1360: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1361: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1362: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1363: } else {
1364: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1365: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1366: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1367: }
1368: if (ref($domconfig{'quotas'}) eq 'HASH') {
1369: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1370: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1371: } else {
1372: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1373: }
1374: my @usertools = ('aboutme','blog','portfolio');
1375: foreach my $item (@usertools) {
1376: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1377: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1378: }
1379: }
1380: }
1381: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1382: foreach my $item ('official','unofficial','community') {
1383: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1384: }
1385: }
1386: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1387: foreach my $item ('inststatustypes','inststatusorder') {
1388: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1389: }
1390: }
1391: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1392: $cachetime);
1393: return %domdefaults;
1394: }
1395:
1396: # --------------------------------------------------- Assign a key to a student
1397:
1398: sub assign_access_key {
1399: #
1400: # a valid key looks like uname:udom#comments
1401: # comments are being appended
1402: #
1403: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1404: $kdom=
1405: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1406: $knum=
1407: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1408: $cdom=
1409: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1410: $cnum=
1411: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1412: $udom=$env{'user.name'} unless (defined($udom));
1413: $uname=$env{'user.domain'} unless (defined($uname));
1414: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1415: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1416: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1417: # assigned to this person
1418: # - this should not happen,
1419: # unless something went wrong
1420: # the first time around
1421: # ready to assign
1422: $logentry=$1.'; '.$logentry;
1423: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1424: $kdom,$knum) eq 'ok') {
1425: # key now belongs to user
1426: my $envkey='key.'.$cdom.'_'.$cnum;
1427: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1428: &appenv({'environment.'.$envkey => $ckey});
1429: return 'ok';
1430: } else {
1431: return
1432: 'error: Count not permanently assign key, will need to be re-entered later.';
1433: }
1434: } else {
1435: return 'error: Could not assign key, try again later.';
1436: }
1437: } elsif (!$existing{$ckey}) {
1438: # the key does not exist
1439: return 'error: The key does not exist';
1440: } else {
1441: # the key is somebody else's
1442: return 'error: The key is already in use';
1443: }
1444: }
1445:
1446: # ------------------------------------------ put an additional comment on a key
1447:
1448: sub comment_access_key {
1449: #
1450: # a valid key looks like uname:udom#comments
1451: # comments are being appended
1452: #
1453: my ($ckey,$cdom,$cnum,$logentry)=@_;
1454: $cdom=
1455: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1456: $cnum=
1457: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1458: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1459: if ($existing{$ckey}) {
1460: $existing{$ckey}.='; '.$logentry;
1461: # ready to assign
1462: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1463: $cdom,$cnum) eq 'ok') {
1464: return 'ok';
1465: } else {
1466: return 'error: Count not store comment.';
1467: }
1468: } else {
1469: # the key does not exist
1470: return 'error: The key does not exist';
1471: }
1472: }
1473:
1474: # ------------------------------------------------------ Generate a set of keys
1475:
1476: sub generate_access_keys {
1477: my ($number,$cdom,$cnum,$logentry)=@_;
1478: $cdom=
1479: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1480: $cnum=
1481: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1482: unless (&allowed('mky',$cdom)) { return 0; }
1483: unless (($cdom) && ($cnum)) { return 0; }
1484: if ($number>10000) { return 0; }
1485: sleep(2); # make sure don't get same seed twice
1486: srand(time()^($$+($$<<15))); # from "Programming Perl"
1487: my $total=0;
1488: for (my $i=1;$i<=$number;$i++) {
1489: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1490: sprintf("%lx",int(100000*rand)).'-'.
1491: sprintf("%lx",int(100000*rand));
1492: $newkey=~s/1/g/g; # folks mix up 1 and l
1493: $newkey=~s/0/h/g; # and also 0 and O
1494: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1495: if ($existing{$newkey}) {
1496: $i--;
1497: } else {
1498: if (&put('accesskeys',
1499: { $newkey => '# generated '.localtime().
1500: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1501: '; '.$logentry },
1502: $cdom,$cnum) eq 'ok') {
1503: $total++;
1504: }
1505: }
1506: }
1507: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1508: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1509: return $total;
1510: }
1511:
1512: # ------------------------------------------------------- Validate an accesskey
1513:
1514: sub validate_access_key {
1515: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1516: $cdom=
1517: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1518: $cnum=
1519: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1520: $udom=$env{'user.domain'} unless (defined($udom));
1521: $uname=$env{'user.name'} unless (defined($uname));
1522: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1523: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1524: }
1525:
1526: # ------------------------------------- Find the section of student in a course
1527: sub devalidate_getsection_cache {
1528: my ($udom,$unam,$courseid)=@_;
1529: my $hashid="$udom:$unam:$courseid";
1530: &devalidate_cache_new('getsection',$hashid);
1531: }
1532:
1533: sub courseid_to_courseurl {
1534: my ($courseid) = @_;
1535: #already url style courseid
1536: return $courseid if ($courseid =~ m{^/});
1537:
1538: if (exists($env{'course.'.$courseid.'.num'})) {
1539: my $cnum = $env{'course.'.$courseid.'.num'};
1540: my $cdom = $env{'course.'.$courseid.'.domain'};
1541: return "/$cdom/$cnum";
1542: }
1543:
1544: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1545: if (exists($courseinfo{'num'})) {
1546: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1547: }
1548:
1549: return undef;
1550: }
1551:
1552: sub getsection {
1553: my ($udom,$unam,$courseid)=@_;
1554: my $cachetime=1800;
1555:
1556: my $hashid="$udom:$unam:$courseid";
1557: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1558: if (defined($cached)) { return $result; }
1559:
1560: my %Pending;
1561: my %Expired;
1562: #
1563: # Each role can either have not started yet (pending), be active,
1564: # or have expired.
1565: #
1566: # If there is an active role, we are done.
1567: #
1568: # If there is more than one role which has not started yet,
1569: # choose the one which will start sooner
1570: # If there is one role which has not started yet, return it.
1571: #
1572: # If there is more than one expired role, choose the one which ended last.
1573: # If there is a role which has expired, return it.
1574: #
1575: $courseid = &courseid_to_courseurl($courseid);
1576: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1577: foreach my $key (keys(%roleshash)) {
1578: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1579: my $section=$1;
1580: if ($key eq $courseid.'_st') { $section=''; }
1581: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1582: my $now=time;
1583: if (defined($end) && $end && ($now > $end)) {
1584: $Expired{$end}=$section;
1585: next;
1586: }
1587: if (defined($start) && $start && ($now < $start)) {
1588: $Pending{$start}=$section;
1589: next;
1590: }
1591: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1592: }
1593: #
1594: # Presumedly there will be few matching roles from the above
1595: # loop and the sorting time will be negligible.
1596: if (scalar(keys(%Pending))) {
1597: my ($time) = sort {$a <=> $b} keys(%Pending);
1598: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1599: }
1600: if (scalar(keys(%Expired))) {
1601: my @sorted = sort {$a <=> $b} keys(%Expired);
1602: my $time = pop(@sorted);
1603: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1604: }
1605: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1606: }
1607:
1608: sub save_cache {
1609: &purge_remembered();
1610: #&Apache::loncommon::validate_page();
1611: undef(%env);
1612: undef($env_loaded);
1613: }
1614:
1615: my $to_remember=-1;
1616: my %remembered;
1617: my %accessed;
1618: my $kicks=0;
1619: my $hits=0;
1620: sub make_key {
1621: my ($name,$id) = @_;
1622: if (length($id) > 65
1623: && length(&escape($id)) > 200) {
1624: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1625: }
1626: return &escape($name.':'.$id);
1627: }
1628:
1629: sub devalidate_cache_new {
1630: my ($name,$id,$debug) = @_;
1631: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1632: $id=&make_key($name,$id);
1633: $memcache->delete($id);
1634: delete($remembered{$id});
1635: delete($accessed{$id});
1636: }
1637:
1638: sub is_cached_new {
1639: my ($name,$id,$debug) = @_;
1640: $id=&make_key($name,$id);
1641: if (exists($remembered{$id})) {
1642: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1643: $accessed{$id}=[&gettimeofday()];
1644: $hits++;
1645: return ($remembered{$id},1);
1646: }
1647: my $value = $memcache->get($id);
1648: if (!(defined($value))) {
1649: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1650: return (undef,undef);
1651: }
1652: if ($value eq '__undef__') {
1653: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1654: $value=undef;
1655: }
1656: &make_room($id,$value,$debug);
1657: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1658: return ($value,1);
1659: }
1660:
1661: sub do_cache_new {
1662: my ($name,$id,$value,$time,$debug) = @_;
1663: $id=&make_key($name,$id);
1664: my $setvalue=$value;
1665: if (!defined($setvalue)) {
1666: $setvalue='__undef__';
1667: }
1668: if (!defined($time) ) {
1669: $time=600;
1670: }
1671: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1672: my $result = $memcache->set($id,$setvalue,$time);
1673: if (! $result) {
1674: &logthis("caching of id -> $id failed");
1675: $memcache->disconnect_all();
1676: }
1677: # need to make a copy of $value
1678: &make_room($id,$value,$debug);
1679: return $value;
1680: }
1681:
1682: sub make_room {
1683: my ($id,$value,$debug)=@_;
1684:
1685: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1686: : $value;
1687: if ($to_remember<0) { return; }
1688: $accessed{$id}=[&gettimeofday()];
1689: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1690: my $to_kick;
1691: my $max_time=0;
1692: foreach my $other (keys(%accessed)) {
1693: if (&tv_interval($accessed{$other}) > $max_time) {
1694: $to_kick=$other;
1695: $max_time=&tv_interval($accessed{$other});
1696: }
1697: }
1698: delete($remembered{$to_kick});
1699: delete($accessed{$to_kick});
1700: $kicks++;
1701: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1702: return;
1703: }
1704:
1705: sub purge_remembered {
1706: #&logthis("Tossing ".scalar(keys(%remembered)));
1707: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1708: undef(%remembered);
1709: undef(%accessed);
1710: }
1711: # ------------------------------------- Read an entry from a user's environment
1712:
1713: sub userenvironment {
1714: my ($udom,$unam,@what)=@_;
1715: my $items;
1716: foreach my $item (@what) {
1717: $items.=&escape($item).'&';
1718: }
1719: $items=~s/\&$//;
1720: my %returnhash=();
1721: my $uhome = &homeserver($unam,$udom);
1722: unless ($uhome eq 'no_host') {
1723: my @answer=split(/\&/,
1724: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1725: my $i;
1726: for ($i=0;$i<=$#what;$i++) {
1727: $returnhash{$what[$i]}=&unescape($answer[$i]);
1728: }
1729: }
1730: return %returnhash;
1731: }
1732:
1733: # ---------------------------------------------------------- Get a studentphoto
1734: sub studentphoto {
1735: my ($udom,$unam,$ext) = @_;
1736: my $home=&Apache::lonnet::homeserver($unam,$udom);
1737: if (defined($env{'request.course.id'})) {
1738: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1739: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1740: return(&retrievestudentphoto($udom,$unam,$ext));
1741: } else {
1742: my ($result,$perm_reqd)=
1743: &Apache::lonnet::auto_photo_permission($unam,$udom);
1744: if ($result eq 'ok') {
1745: if (!($perm_reqd eq 'yes')) {
1746: return(&retrievestudentphoto($udom,$unam,$ext));
1747: }
1748: }
1749: }
1750: }
1751: } else {
1752: my ($result,$perm_reqd) =
1753: &Apache::lonnet::auto_photo_permission($unam,$udom);
1754: if ($result eq 'ok') {
1755: if (!($perm_reqd eq 'yes')) {
1756: return(&retrievestudentphoto($udom,$unam,$ext));
1757: }
1758: }
1759: }
1760: return '/adm/lonKaputt/lonlogo_broken.gif';
1761: }
1762:
1763: sub retrievestudentphoto {
1764: my ($udom,$unam,$ext,$type) = @_;
1765: my $home=&Apache::lonnet::homeserver($unam,$udom);
1766: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1767: if ($ret eq 'ok') {
1768: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1769: if ($type eq 'thumbnail') {
1770: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1771: }
1772: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1773: return $tokenurl;
1774: } else {
1775: if ($type eq 'thumbnail') {
1776: return '/adm/lonKaputt/genericstudent_tn.gif';
1777: } else {
1778: return '/adm/lonKaputt/lonlogo_broken.gif';
1779: }
1780: }
1781: }
1782:
1783: # -------------------------------------------------------------------- New chat
1784:
1785: sub chatsend {
1786: my ($newentry,$anon,$group)=@_;
1787: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1788: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1789: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1790: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1791: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1792: &escape($newentry)).':'.$group,$chome);
1793: }
1794:
1795: # ------------------------------------------ Find current version of a resource
1796:
1797: sub getversion {
1798: my $fname=&clutter(shift);
1799: unless ($fname=~/^\/res\//) { return -1; }
1800: return ¤tversion(&filelocation('',$fname));
1801: }
1802:
1803: sub currentversion {
1804: my $fname=shift;
1805: my ($result,$cached)=&is_cached_new('resversion',$fname);
1806: if (defined($cached)) { return $result; }
1807: my $author=$fname;
1808: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1809: my ($udom,$uname)=split(/\//,$author);
1810: my $home=homeserver($uname,$udom);
1811: if ($home eq 'no_host') {
1812: return -1;
1813: }
1814: my $answer=reply("currentversion:$fname",$home);
1815: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1816: return -1;
1817: }
1818: return &do_cache_new('resversion',$fname,$answer,600);
1819: }
1820:
1821: # ----------------------------- Subscribe to a resource, return URL if possible
1822:
1823: sub subscribe {
1824: my $fname=shift;
1825: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1826: $fname=~s/[\n\r]//g;
1827: my $author=$fname;
1828: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1829: my ($udom,$uname)=split(/\//,$author);
1830: my $home=homeserver($uname,$udom);
1831: if ($home eq 'no_host') {
1832: return 'not_found';
1833: }
1834: my $answer=reply("sub:$fname",$home);
1835: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1836: $answer.=' by '.$home;
1837: }
1838: return $answer;
1839: }
1840:
1841: # -------------------------------------------------------------- Replicate file
1842:
1843: sub repcopy {
1844: my $filename=shift;
1845: $filename=~s/\/+/\//g;
1846: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1847: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1848: if ($filename=~m|^/home/httpd/html/userfiles/| or
1849: $filename=~m -^/*(uploaded|editupload)/-) {
1850: return &repcopy_userfile($filename);
1851: }
1852: $filename=~s/[\n\r]//g;
1853: my $transname="$filename.in.transfer";
1854: # FIXME: this should flock
1855: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1856: my $remoteurl=subscribe($filename);
1857: if ($remoteurl =~ /^con_lost by/) {
1858: &logthis("Subscribe returned $remoteurl: $filename");
1859: return 'unavailable';
1860: } elsif ($remoteurl eq 'not_found') {
1861: #&logthis("Subscribe returned not_found: $filename");
1862: return 'not_found';
1863: } elsif ($remoteurl =~ /^rejected by/) {
1864: &logthis("Subscribe returned $remoteurl: $filename");
1865: return 'forbidden';
1866: } elsif ($remoteurl eq 'directory') {
1867: return 'ok';
1868: } else {
1869: my $author=$filename;
1870: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1871: my ($udom,$uname)=split(/\//,$author);
1872: my $home=homeserver($uname,$udom);
1873: unless ($home eq $perlvar{'lonHostID'}) {
1874: my @parts=split(/\//,$filename);
1875: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1876: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1877: &logthis("Malconfiguration for replication: $filename");
1878: return 'bad_request';
1879: }
1880: my $count;
1881: for ($count=5;$count<$#parts;$count++) {
1882: $path.="/$parts[$count]";
1883: if ((-e $path)!=1) {
1884: mkdir($path,0777);
1885: }
1886: }
1887: my $ua=new LWP::UserAgent;
1888: my $request=new HTTP::Request('GET',"$remoteurl");
1889: my $response=$ua->request($request,$transname);
1890: if ($response->is_error()) {
1891: unlink($transname);
1892: my $message=$response->status_line;
1893: &logthis("<font color=\"blue\">WARNING:"
1894: ." LWP get: $message: $filename</font>");
1895: return 'unavailable';
1896: } else {
1897: if ($remoteurl!~/\.meta$/) {
1898: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1899: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1900: if ($mresponse->is_error()) {
1901: unlink($filename.'.meta');
1902: &logthis(
1903: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1904: }
1905: }
1906: rename($transname,$filename);
1907: return 'ok';
1908: }
1909: }
1910: }
1911: }
1912:
1913: # ------------------------------------------------ Get server side include body
1914: sub ssi_body {
1915: my ($filelink,%form)=@_;
1916: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1917: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1918: }
1919: my $output='';
1920: my $response;
1921: if ($filelink=~/^https?\:/) {
1922: ($output,$response)=&externalssi($filelink);
1923: } else {
1924: $filelink .= $filelink=~/\?/ ? '&' : '?';
1925: $filelink .= 'inhibitmenu=yes';
1926: ($output,$response)=&ssi($filelink,%form);
1927: }
1928: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1929: $output=~s/^.*?\<body[^\>]*\>//si;
1930: $output=~s/\<\/body\s*\>.*?$//si;
1931: if (wantarray) {
1932: return ($output, $response);
1933: } else {
1934: return $output;
1935: }
1936: }
1937:
1938: # --------------------------------------------------------- Server Side Include
1939:
1940: sub absolute_url {
1941: my ($host_name) = @_;
1942: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1943: if ($host_name eq '') {
1944: $host_name = $ENV{'SERVER_NAME'};
1945: }
1946: return $protocol.$host_name;
1947: }
1948:
1949: #
1950: # Server side include.
1951: # Parameters:
1952: # fn Possibly encrypted resource name/id.
1953: # form Hash that describes how the rendering should be done
1954: # and other things.
1955: # Returns:
1956: # Scalar context: The content of the response.
1957: # Array context: 2 element list of the content and the full response object.
1958: #
1959: sub ssi {
1960:
1961: my ($fn,%form)=@_;
1962: my $ua=new LWP::UserAgent;
1963: my $request;
1964:
1965: $form{'no_update_last_known'}=1;
1966: &Apache::lonenc::check_encrypt(\$fn);
1967: if (%form) {
1968: $request=new HTTP::Request('POST',&absolute_url().$fn);
1969: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
1970: } else {
1971: $request=new HTTP::Request('GET',&absolute_url().$fn);
1972: }
1973:
1974: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1975: my $response=$ua->request($request);
1976:
1977: if (wantarray) {
1978: return ($response->content, $response);
1979: } else {
1980: return $response->content;
1981: }
1982: }
1983:
1984: sub externalssi {
1985: my ($url)=@_;
1986: my $ua=new LWP::UserAgent;
1987: my $request=new HTTP::Request('GET',$url);
1988: my $response=$ua->request($request);
1989: if (wantarray) {
1990: return ($response->content, $response);
1991: } else {
1992: return $response->content;
1993: }
1994: }
1995:
1996: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1997:
1998: sub allowuploaded {
1999: my ($srcurl,$url)=@_;
2000: $url=&clutter(&declutter($url));
2001: my $dir=$url;
2002: $dir=~s/\/[^\/]+$//;
2003: my %httpref=();
2004: my $httpurl=&hreflocation('',$url);
2005: $httpref{'httpref.'.$httpurl}=$srcurl;
2006: &Apache::lonnet::appenv(\%httpref);
2007: }
2008:
2009: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2010: # input: action, courseID, current domain, intended
2011: # path to file, source of file, instruction to parse file for objects,
2012: # ref to hash for embedded objects,
2013: # ref to hash for codebase of java objects.
2014: #
2015: # output: url to file (if action was uploaddoc),
2016: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2017: #
2018: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2019: # course.
2020: #
2021: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2022: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2023: # course's home server.
2024: #
2025: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2026: # be copied from $source (current location) to
2027: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2028: # and will then be copied to
2029: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2030: # course's home server.
2031: #
2032: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2033: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2034: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2035: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2036: # in course's home server.
2037: #
2038:
2039: sub process_coursefile {
2040: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
2041: my $fetchresult;
2042: my $home=&homeserver($docuname,$docudom);
2043: if ($action eq 'propagate') {
2044: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2045: $home);
2046: } else {
2047: my $fpath = '';
2048: my $fname = $file;
2049: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2050: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2051: my $filepath = &build_filepath($fpath);
2052: if ($action eq 'copy') {
2053: if ($source eq '') {
2054: $fetchresult = 'no source file';
2055: return $fetchresult;
2056: } else {
2057: my $destination = $filepath.'/'.$fname;
2058: rename($source,$destination);
2059: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2060: $home);
2061: }
2062: } elsif ($action eq 'uploaddoc') {
2063: open(my $fh,'>'.$filepath.'/'.$fname);
2064: print $fh $env{'form.'.$source};
2065: close($fh);
2066: if ($parser eq 'parse') {
2067: my $mm = new File::MMagic;
2068: my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
2069: if ($mime_type eq 'text/html') {
2070: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2071: unless ($parse_result eq 'ok') {
2072: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2073: }
2074: }
2075: }
2076: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2077: $home);
2078: if ($fetchresult eq 'ok') {
2079: return '/uploaded/'.$fpath.'/'.$fname;
2080: } else {
2081: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2082: ' to host '.$home.': '.$fetchresult);
2083: return '/adm/notfound.html';
2084: }
2085: }
2086: }
2087: unless ( $fetchresult eq 'ok') {
2088: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2089: ' to host '.$home.': '.$fetchresult);
2090: }
2091: return $fetchresult;
2092: }
2093:
2094: sub build_filepath {
2095: my ($fpath) = @_;
2096: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2097: unless ($fpath eq '') {
2098: my @parts=split('/',$fpath);
2099: foreach my $part (@parts) {
2100: $filepath.= '/'.$part;
2101: if ((-e $filepath)!=1) {
2102: mkdir($filepath,0777);
2103: }
2104: }
2105: }
2106: return $filepath;
2107: }
2108:
2109: sub store_edited_file {
2110: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2111: my $file = $primary_url;
2112: $file =~ s#^/uploaded/$docudom/$docuname/##;
2113: my $fpath = '';
2114: my $fname = $file;
2115: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2116: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2117: my $filepath = &build_filepath($fpath);
2118: open(my $fh,'>'.$filepath.'/'.$fname);
2119: print $fh $content;
2120: close($fh);
2121: my $home=&homeserver($docuname,$docudom);
2122: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2123: $home);
2124: if ($$fetchresult eq 'ok') {
2125: return '/uploaded/'.$fpath.'/'.$fname;
2126: } else {
2127: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2128: ' to host '.$home.': '.$$fetchresult);
2129: return '/adm/notfound.html';
2130: }
2131: }
2132:
2133: sub clean_filename {
2134: my ($fname,$args)=@_;
2135: # Replace Windows backslashes by forward slashes
2136: $fname=~s/\\/\//g;
2137: if (!$args->{'keep_path'}) {
2138: # Get rid of everything but the actual filename
2139: $fname=~s/^.*\/([^\/]+)$/$1/;
2140: }
2141: # Replace spaces by underscores
2142: $fname=~s/\s+/\_/g;
2143: # Replace all other weird characters by nothing
2144: $fname=~s{[^/\w\.\-]}{}g;
2145: # Replace all .\d. sequences with _\d. so they no longer look like version
2146: # numbers
2147: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2148: return $fname;
2149: }
2150: #This Function check if a Image max 400px width and height 500px. If not then scale the image down
2151: sub resizeImage {
2152: my($img_url) = @_;
2153: my $ima = Image::Magick->new;
2154: $ima->Read($img_url);
2155: if($ima->Get('width') > 400)
2156: {
2157: my $factor = $ima->Get('width')/400;
2158: $ima->Scale( width=>400, height=>$ima->Get('height')/$factor );
2159: }
2160: if($ima->Get('height') > 500)
2161: {
2162: my $factor = $ima->Get('height')/500;
2163: $ima->Scale( width=>$ima->Get('width')/$factor, height=>500);
2164: }
2165:
2166: $ima->Write($img_url);
2167: }
2168:
2169: #Wrapper function for userphotoupload
2170: sub userphotoupload
2171: {
2172: my($formname,$subdir) = @_;
2173: $upload_photo_form = 1;
2174: return &userfileupload($formname,undef,$subdir);
2175: }
2176:
2177: # --------------- Take an uploaded file and put it into the userfiles directory
2178: # input: $formname - the contents of the file are in $env{"form.$formname"}
2179: # the desired filenam is in $env{"form.$formname.filename"}
2180: # $coursedoc - if true up to the current course
2181: # if false
2182: # $subdir - directory in userfile to store the file into
2183: # $parser - instruction to parse file for objects ($parser = parse)
2184: # $allfiles - reference to hash for embedded objects
2185: # $codebase - reference to hash for codebase of java objects
2186: # $desuname - username for permanent storage of uploaded file
2187: # $dsetudom - domain for permanaent storage of uploaded file
2188: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2189: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2190: #
2191: # output: url of file in userspace, or error: <message>
2192: # or /adm/notfound.html if failure to upload occurse
2193:
2194:
2195: sub userfileupload {
2196: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2197: $destudom,$thumbwidth,$thumbheight)=@_;
2198: if (!defined($subdir)) { $subdir='unknown'; }
2199: my $fname=$env{'form.'.$formname.'.filename'};
2200: $fname=&clean_filename($fname);
2201: # See if there is anything left
2202: unless ($fname) { return 'error: no uploaded file'; }
2203: chop($env{'form.'.$formname});
2204: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2205: my $now = time;
2206: my $filepath = 'tmp/helprequests/'.$now;
2207: my @parts=split(/\//,$filepath);
2208: my $fullpath = $perlvar{'lonDaemons'};
2209: for (my $i=0;$i<@parts;$i++) {
2210: $fullpath .= '/'.$parts[$i];
2211: if ((-e $fullpath)!=1) {
2212: mkdir($fullpath,0777);
2213: }
2214: }
2215: open(my $fh,'>'.$fullpath.'/'.$fname);
2216: print $fh $env{'form.'.$formname};
2217: close($fh);
2218: return $fullpath.'/'.$fname;
2219: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2220: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2221: '_'.$env{'user.domain'}.'/pending';
2222: my @parts=split(/\//,$filepath);
2223: my $fullpath = $perlvar{'lonDaemons'};
2224: for (my $i=0;$i<@parts;$i++) {
2225: $fullpath .= '/'.$parts[$i];
2226: if ((-e $fullpath)!=1) {
2227: mkdir($fullpath,0777);
2228: }
2229: }
2230: open(my $fh,'>'.$fullpath.'/'.$fname);
2231: print $fh $env{'form.'.$formname};
2232: close($fh);
2233: return $fullpath.'/'.$fname;
2234: }
2235: if ($subdir eq 'scantron') {
2236: $fname = 'scantron_orig_'.$fname;
2237: } else {
2238: # Create the directory if not present
2239: $fname="$subdir/$fname";
2240: }
2241: if ($coursedoc) {
2242: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2243: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2244: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2245: return &finishuserfileupload($docuname,$docudom,
2246: $formname,$fname,$parser,$allfiles,
2247: $codebase,$thumbwidth,$thumbheight);
2248: } else {
2249: $fname=$env{'form.folder'}.'/'.$fname;
2250: return &process_coursefile('uploaddoc',$docuname,$docudom,
2251: $fname,$formname,$parser,
2252: $allfiles,$codebase);
2253: }
2254: } elsif (defined($destuname)) {
2255: my $docuname=$destuname;
2256: my $docudom=$destudom;
2257: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2258: $parser,$allfiles,$codebase,
2259: $thumbwidth,$thumbheight);
2260:
2261: } else {
2262: my $docuname=$env{'user.name'};
2263: my $docudom=$env{'user.domain'};
2264: if (exists($env{'form.group'})) {
2265: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2266: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2267: }
2268: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2269: $parser,$allfiles,$codebase,
2270: $thumbwidth,$thumbheight);
2271: }
2272: }
2273:
2274: sub finishuserfileupload {
2275: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2276: $thumbwidth,$thumbheight) = @_;
2277: my $path=$docudom.'/'.$docuname.'/';
2278: my $filepath=$perlvar{'lonDocRoot'};
2279:
2280: my ($fnamepath,$file,$fetchthumb);
2281: $file=$fname;
2282: if ($fname=~m|/|) {
2283: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2284: $path.=$fnamepath.'/';
2285: }
2286: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2287: my $count;
2288: for ($count=4;$count<=$#parts;$count++) {
2289: $filepath.="/$parts[$count]";
2290: if ((-e $filepath)!=1) {
2291: mkdir($filepath,0777);
2292: }
2293: }
2294:
2295: # Save the file
2296: {
2297: if (!open(FH,'>'.$filepath.'/'.$file)) {
2298: &logthis('Failed to create '.$filepath.'/'.$file);
2299: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2300: return '/adm/notfound.html';
2301: }
2302: if (!print FH ($env{'form.'.$formname})) {
2303: &logthis('Failed to write to '.$filepath.'/'.$file);
2304: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2305: return '/adm/notfound.html';
2306: }
2307: close(FH);
2308: if($upload_photo_form==1)
2309: {
2310: resizeImage($filepath.'/'.$file);
2311: $upload_photo_form = 0;
2312: }
2313: }
2314: if ($parser eq 'parse') {
2315: my $mm = new File::MMagic;
2316: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2317: if ($mime_type eq 'text/html') {
2318: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2319: $allfiles,$codebase);
2320: unless ($parse_result eq 'ok') {
2321: &logthis('Failed to parse '.$filepath.$file.
2322: ' for embedded media: '.$parse_result);
2323: }
2324: }
2325: }
2326: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2327: my $input = $filepath.'/'.$file;
2328: my $output = $filepath.'/'.'tn-'.$file;
2329: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2330: system("convert -sample $thumbsize $input $output");
2331: if (-e $filepath.'/'.'tn-'.$file) {
2332: $fetchthumb = 1;
2333: }
2334: }
2335:
2336: # Notify homeserver to grep it
2337: #
2338: my $docuhome=&homeserver($docuname,$docudom);
2339: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2340: if ($fetchresult eq 'ok') {
2341: if ($fetchthumb) {
2342: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2343: if ($thumbresult ne 'ok') {
2344: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2345: $docuhome.': '.$thumbresult);
2346: }
2347: }
2348: #
2349: # Return the URL to it
2350: return '/uploaded/'.$path.$file;
2351: } else {
2352: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2353: ': '.$fetchresult);
2354: return '/adm/notfound.html';
2355: }
2356: }
2357:
2358: sub extract_embedded_items {
2359: my ($fullpath,$allfiles,$codebase,$content) = @_;
2360: my @state = ();
2361: my %javafiles = (
2362: codebase => '',
2363: code => '',
2364: archive => ''
2365: );
2366: my %mediafiles = (
2367: src => '',
2368: movie => '',
2369: );
2370: my $p;
2371: if ($content) {
2372: $p = HTML::LCParser->new($content);
2373: } else {
2374: $p = HTML::LCParser->new($fullpath);
2375: }
2376: while (my $t=$p->get_token()) {
2377: if ($t->[0] eq 'S') {
2378: my ($tagname, $attr) = ($t->[1],$t->[2]);
2379: push(@state, $tagname);
2380: if (lc($tagname) eq 'allow') {
2381: &add_filetype($allfiles,$attr->{'src'},'src');
2382: }
2383: if (lc($tagname) eq 'img') {
2384: &add_filetype($allfiles,$attr->{'src'},'src');
2385: }
2386: if (lc($tagname) eq 'a') {
2387: &add_filetype($allfiles,$attr->{'href'},'href');
2388: }
2389: if (lc($tagname) eq 'script') {
2390: if ($attr->{'archive'} =~ /\.jar$/i) {
2391: &add_filetype($allfiles,$attr->{'archive'},'archive');
2392: } else {
2393: &add_filetype($allfiles,$attr->{'src'},'src');
2394: }
2395: }
2396: if (lc($tagname) eq 'link') {
2397: if (lc($attr->{'rel'}) eq 'stylesheet') {
2398: &add_filetype($allfiles,$attr->{'href'},'href');
2399: }
2400: }
2401: if (lc($tagname) eq 'object' ||
2402: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2403: foreach my $item (keys(%javafiles)) {
2404: $javafiles{$item} = '';
2405: }
2406: }
2407: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2408: my $name = lc($attr->{'name'});
2409: foreach my $item (keys(%javafiles)) {
2410: if ($name eq $item) {
2411: $javafiles{$item} = $attr->{'value'};
2412: last;
2413: }
2414: }
2415: foreach my $item (keys(%mediafiles)) {
2416: if ($name eq $item) {
2417: &add_filetype($allfiles, $attr->{'value'}, 'value');
2418: last;
2419: }
2420: }
2421: }
2422: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2423: foreach my $item (keys(%javafiles)) {
2424: if ($attr->{$item}) {
2425: $javafiles{$item} = $attr->{$item};
2426: last;
2427: }
2428: }
2429: foreach my $item (keys(%mediafiles)) {
2430: if ($attr->{$item}) {
2431: &add_filetype($allfiles,$attr->{$item},$item);
2432: last;
2433: }
2434: }
2435: }
2436: } elsif ($t->[0] eq 'E') {
2437: my ($tagname) = ($t->[1]);
2438: if ($javafiles{'codebase'} ne '') {
2439: $javafiles{'codebase'} .= '/';
2440: }
2441: if (lc($tagname) eq 'applet' ||
2442: lc($tagname) eq 'object' ||
2443: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2444: ) {
2445: foreach my $item (keys(%javafiles)) {
2446: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2447: my $file=$javafiles{'codebase'}.$javafiles{$item};
2448: &add_filetype($allfiles,$file,$item);
2449: }
2450: }
2451: }
2452: pop @state;
2453: }
2454: }
2455: return 'ok';
2456: }
2457:
2458: sub add_filetype {
2459: my ($allfiles,$file,$type)=@_;
2460: if (exists($allfiles->{$file})) {
2461: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2462: push(@{$allfiles->{$file}}, &escape($type));
2463: }
2464: } else {
2465: @{$allfiles->{$file}} = (&escape($type));
2466: }
2467: }
2468:
2469: sub removeuploadedurl {
2470: my ($url)=@_;
2471: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2472: return &removeuserfile($uname,$udom,$fname);
2473: }
2474:
2475: sub removeuserfile {
2476: my ($docuname,$docudom,$fname)=@_;
2477: my $home=&homeserver($docuname,$docudom);
2478: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2479: if ($result eq 'ok') {
2480: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2481: my $metafile = $fname.'.meta';
2482: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2483: my $url = "/uploaded/$docudom/$docuname/$fname";
2484: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2485: my $sqlresult =
2486: &update_portfolio_table($docuname,$docudom,$file,
2487: 'portfolio_metadata',$group,
2488: 'delete');
2489: }
2490: }
2491: return $result;
2492: }
2493:
2494: sub mkdiruserfile {
2495: my ($docuname,$docudom,$dir)=@_;
2496: my $home=&homeserver($docuname,$docudom);
2497: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2498: }
2499:
2500: sub renameuserfile {
2501: my ($docuname,$docudom,$old,$new)=@_;
2502: my $home=&homeserver($docuname,$docudom);
2503: my $result = &reply("renameuserfile:$docudom:$docuname:".
2504: &escape("$old").':'.&escape("$new"),$home);
2505: if ($result eq 'ok') {
2506: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2507: my $oldmeta = $old.'.meta';
2508: my $newmeta = $new.'.meta';
2509: my $metaresult =
2510: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2511: my $url = "/uploaded/$docudom/$docuname/$old";
2512: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2513: my $sqlresult =
2514: &update_portfolio_table($docuname,$docudom,$file,
2515: 'portfolio_metadata',$group,
2516: 'delete');
2517: }
2518: }
2519: return $result;
2520: }
2521:
2522: # ------------------------------------------------------------------------- Log
2523:
2524: sub log {
2525: my ($dom,$nam,$hom,$what)=@_;
2526: return critical("log:$dom:$nam:$what",$hom);
2527: }
2528:
2529: # ------------------------------------------------------------------ Course Log
2530: #
2531: # This routine flushes several buffers of non-mission-critical nature
2532: #
2533:
2534: sub flushcourselogs {
2535: &logthis('Flushing log buffers');
2536: #
2537: # course logs
2538: # This is a log of all transactions in a course, which can be used
2539: # for data mining purposes
2540: #
2541: # It also collects the courseid database, which lists last transaction
2542: # times and course titles for all courseids
2543: #
2544: my %courseidbuffer=();
2545: foreach my $crsid (keys(%courselogs)) {
2546: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2547: &escape($courselogs{$crsid}),
2548: $coursehombuf{$crsid}) eq 'ok') {
2549: delete $courselogs{$crsid};
2550: } else {
2551: &logthis('Failed to flush log buffer for '.$crsid);
2552: if (length($courselogs{$crsid})>40000) {
2553: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2554: " exceeded maximum size, deleting.</font>");
2555: delete $courselogs{$crsid};
2556: }
2557: }
2558: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2559: 'description' => $coursedescrbuf{$crsid},
2560: 'inst_code' => $courseinstcodebuf{$crsid},
2561: 'type' => $coursetypebuf{$crsid},
2562: 'owner' => $courseownerbuf{$crsid},
2563: };
2564: }
2565: #
2566: # Write course id database (reverse lookup) to homeserver of courses
2567: # Is used in pickcourse
2568: #
2569: foreach my $crs_home (keys(%courseidbuffer)) {
2570: my $response = &courseidput(&host_domain($crs_home),
2571: $courseidbuffer{$crs_home},
2572: $crs_home,'timeonly');
2573: }
2574: #
2575: # File accesses
2576: # Writes to the dynamic metadata of resources to get hit counts, etc.
2577: #
2578: foreach my $entry (keys(%accesshash)) {
2579: if ($entry =~ /___count$/) {
2580: my ($dom,$name);
2581: ($dom,$name,undef)=
2582: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2583: if (! defined($dom) || $dom eq '' ||
2584: ! defined($name) || $name eq '') {
2585: my $cid = $env{'request.course.id'};
2586: $dom = $env{'request.'.$cid.'.domain'};
2587: $name = $env{'request.'.$cid.'.num'};
2588: }
2589: my $value = $accesshash{$entry};
2590: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2591: my %temphash=($url => $value);
2592: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2593: if ($result eq 'ok') {
2594: delete $accesshash{$entry};
2595: } elsif ($result eq 'unknown_cmd') {
2596: # Target server has old code running on it.
2597: my %temphash=($entry => $value);
2598: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2599: delete $accesshash{$entry};
2600: }
2601: }
2602: } else {
2603: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2604: my %temphash=($entry => $accesshash{$entry});
2605: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2606: delete $accesshash{$entry};
2607: }
2608: }
2609: }
2610: #
2611: # Roles
2612: # Reverse lookup of user roles for course faculty/staff and co-authorship
2613: #
2614: foreach my $entry (keys(%userrolehash)) {
2615: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2616: split(/\:/,$entry);
2617: if (&Apache::lonnet::put('nohist_userroles',
2618: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2619: $rudom,$runame) eq 'ok') {
2620: delete $userrolehash{$entry};
2621: }
2622: }
2623: #
2624: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2625: #
2626: my %domrolebuffer = ();
2627: foreach my $entry (keys(%domainrolehash)) {
2628: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2629: if ($domrolebuffer{$rudom}) {
2630: $domrolebuffer{$rudom}.='&'.&escape($entry).
2631: '='.&escape($domainrolehash{$entry});
2632: } else {
2633: $domrolebuffer{$rudom}.=&escape($entry).
2634: '='.&escape($domainrolehash{$entry});
2635: }
2636: delete $domainrolehash{$entry};
2637: }
2638: foreach my $dom (keys(%domrolebuffer)) {
2639: my %servers = &get_servers($dom,'library');
2640: foreach my $tryserver (keys(%servers)) {
2641: unless (&reply('domroleput:'.$dom.':'.
2642: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2643: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2644: }
2645: }
2646: }
2647: $dumpcount++;
2648: }
2649:
2650: sub courselog {
2651: my $what=shift;
2652: $what=time.':'.$what;
2653: unless ($env{'request.course.id'}) { return ''; }
2654: $coursedombuf{$env{'request.course.id'}}=
2655: $env{'course.'.$env{'request.course.id'}.'.domain'};
2656: $coursenumbuf{$env{'request.course.id'}}=
2657: $env{'course.'.$env{'request.course.id'}.'.num'};
2658: $coursehombuf{$env{'request.course.id'}}=
2659: $env{'course.'.$env{'request.course.id'}.'.home'};
2660: $coursedescrbuf{$env{'request.course.id'}}=
2661: $env{'course.'.$env{'request.course.id'}.'.description'};
2662: $courseinstcodebuf{$env{'request.course.id'}}=
2663: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2664: $courseownerbuf{$env{'request.course.id'}}=
2665: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2666: $coursetypebuf{$env{'request.course.id'}}=
2667: $env{'course.'.$env{'request.course.id'}.'.type'};
2668: if (defined $courselogs{$env{'request.course.id'}}) {
2669: $courselogs{$env{'request.course.id'}}.='&'.$what;
2670: } else {
2671: $courselogs{$env{'request.course.id'}}.=$what;
2672: }
2673: if (length($courselogs{$env{'request.course.id'}})>4048) {
2674: &flushcourselogs();
2675: }
2676: }
2677:
2678: sub courseacclog {
2679: my $fnsymb=shift;
2680: unless ($env{'request.course.id'}) { return ''; }
2681: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2682: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2683: $what.=':POST';
2684: # FIXME: Probably ought to escape things....
2685: foreach my $key (keys(%env)) {
2686: if ($key=~/^form\.(.*)/) {
2687: my $formitem = $1;
2688: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2689: $what.=':'.$formitem.'='.$env{$key};
2690: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2691: $what.=':'.$formitem.'='.$env{$key};
2692: }
2693: }
2694: }
2695: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2696: # FIXME: We should not be depending on a form parameter that someone
2697: # editing lonsearchcat.pm might change in the future.
2698: if ($env{'form.phase'} eq 'course_search') {
2699: $what.= ':POST';
2700: # FIXME: Probably ought to escape things....
2701: foreach my $element ('courseexp','crsfulltext','crsrelated',
2702: 'crsdiscuss') {
2703: $what.=':'.$element.'='.$env{'form.'.$element};
2704: }
2705: }
2706: }
2707: &courselog($what);
2708: }
2709:
2710: sub countacc {
2711: my $url=&declutter(shift);
2712: return if (! defined($url) || $url eq '');
2713: unless ($env{'request.course.id'}) { return ''; }
2714: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2715: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2716: $accesshash{$key}++;
2717: }
2718:
2719: sub linklog {
2720: my ($from,$to)=@_;
2721: $from=&declutter($from);
2722: $to=&declutter($to);
2723: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2724: $accesshash{$to.'___'.$from.'___goto'}=1;
2725: }
2726:
2727: sub userrolelog {
2728: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2729: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2730: ($trole=~/^in/) || ($trole=~/^cc/) ||
2731: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2732: ($trole=~/^ta/) || ($trole=~/^co/)) {
2733: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2734: $userrolehash
2735: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2736: =$tend.':'.$tstart;
2737: }
2738: if (($env{'request.role'} =~ /dc\./) &&
2739: (($trole=~/^au/) || ($trole=~/^in/) ||
2740: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2741: ($trole=~/^cr/) || ($trole=~/^ta/) ||
2742: ($trole=~/^co/))) {
2743: $userrolehash
2744: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2745: =$tend.':'.$tstart;
2746: }
2747: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2748: ($trole=~/^li/) || ($trole=~/^li/) ||
2749: ($trole=~/^au/) || ($trole=~/^dg/) ||
2750: ($trole=~/^sc/)) {
2751: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2752: $domainrolehash
2753: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2754: = $tend.':'.$tstart;
2755: }
2756: }
2757:
2758: sub courserolelog {
2759: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2760: if (($trole eq 'cc') || ($trole eq 'in') ||
2761: ($trole eq 'ep') || ($trole eq 'ad') ||
2762: ($trole eq 'ta') || ($trole eq 'st') ||
2763: ($trole=~/^cr/) || ($trole eq 'gr') ||
2764: ($trole eq 'co')) {
2765: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2766: my $cdom = $1;
2767: my $cnum = $2;
2768: my $sec = $3;
2769: my $namespace = 'rolelog';
2770: my %storehash = (
2771: role => $trole,
2772: start => $tstart,
2773: end => $tend,
2774: selfenroll => $selfenroll,
2775: context => $context,
2776: );
2777: if ($trole eq 'gr') {
2778: $namespace = 'groupslog';
2779: $storehash{'group'} = $sec;
2780: } else {
2781: $storehash{'section'} = $sec;
2782: }
2783: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2784: if (($trole ne 'st') || ($sec ne '')) {
2785: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2786: }
2787: }
2788: }
2789: return;
2790: }
2791:
2792: sub get_course_adv_roles {
2793: my ($cid,$codes) = @_;
2794: $cid=$env{'request.course.id'} unless (defined($cid));
2795: my %coursehash=&coursedescription($cid);
2796: my $crstype = &Apache::loncommon::course_type($cid);
2797: my %nothide=();
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: my %returnhash=();
2806: my %dumphash=
2807: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2808: my $now=time;
2809: my %privileged;
2810: foreach my $entry (keys(%dumphash)) {
2811: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2812: if (($tstart) && ($tstart<0)) { next; }
2813: if (($tend) && ($tend<$now)) { next; }
2814: if (($tstart) && ($now<$tstart)) { next; }
2815: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2816: if ($username eq '' || $domain eq '') { next; }
2817: unless (ref($privileged{$domain}) eq 'HASH') {
2818: my %dompersonnel =
2819: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2820: $privileged{$domain} = {};
2821: foreach my $server (keys(%dompersonnel)) {
2822: if (ref($dompersonnel{$server}) eq 'HASH') {
2823: foreach my $user (keys(%{$dompersonnel{$server}})) {
2824: my ($trole,$uname,$udom) = split(/:/,$user);
2825: $privileged{$udom}{$uname} = 1;
2826: }
2827: }
2828: }
2829: }
2830: if ((exists($privileged{$domain}{$username})) &&
2831: (!$nothide{$username.':'.$domain})) { next; }
2832: if ($role eq 'cr') { next; }
2833: if ($codes) {
2834: if ($section) { $role .= ':'.$section; }
2835: if ($returnhash{$role}) {
2836: $returnhash{$role}.=','.$username.':'.$domain;
2837: } else {
2838: $returnhash{$role}=$username.':'.$domain;
2839: }
2840: } else {
2841: my $key=&plaintext($role,$crstype);
2842: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
2843: if ($returnhash{$key}) {
2844: $returnhash{$key}.=','.$username.':'.$domain;
2845: } else {
2846: $returnhash{$key}=$username.':'.$domain;
2847: }
2848: }
2849: }
2850: return %returnhash;
2851: }
2852:
2853: sub get_my_roles {
2854: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2855: unless (defined($uname)) { $uname=$env{'user.name'}; }
2856: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2857: my (%dumphash,%nothide);
2858: if ($context eq 'userroles') {
2859: %dumphash = &dump('roles',$udom,$uname);
2860: } else {
2861: %dumphash=
2862: &dump('nohist_userroles',$udom,$uname);
2863: if ($hidepriv) {
2864: my %coursehash=&coursedescription($udom.'_'.$uname);
2865: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2866: if ($user !~ /:/) {
2867: $nothide{join(':',split(/[\@]/,$user))} = 1;
2868: } else {
2869: $nothide{$user} = 1;
2870: }
2871: }
2872: }
2873: }
2874: my %returnhash=();
2875: my $now=time;
2876: my %privileged;
2877: foreach my $entry (keys(%dumphash)) {
2878: my ($role,$tend,$tstart);
2879: if ($context eq 'userroles') {
2880: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2881: } else {
2882: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2883: }
2884: if (($tstart) && ($tstart<0)) { next; }
2885: my $status = 'active';
2886: if (($tend) && ($tend<=$now)) {
2887: $status = 'previous';
2888: }
2889: if (($tstart) && ($now<$tstart)) {
2890: $status = 'future';
2891: }
2892: if (ref($types) eq 'ARRAY') {
2893: if (!grep(/^\Q$status\E$/,@{$types})) {
2894: next;
2895: }
2896: } else {
2897: if ($status ne 'active') {
2898: next;
2899: }
2900: }
2901: my ($rolecode,$username,$domain,$section,$area);
2902: if ($context eq 'userroles') {
2903: ($area,$rolecode) = split(/_/,$entry);
2904: (undef,$domain,$username,$section) = split(/\//,$area);
2905: } else {
2906: ($role,$username,$domain,$section) = split(/\:/,$entry);
2907: }
2908: if (ref($roledoms) eq 'ARRAY') {
2909: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2910: next;
2911: }
2912: }
2913: if (ref($roles) eq 'ARRAY') {
2914: if (!grep(/^\Q$role\E$/,@{$roles})) {
2915: if ($role =~ /^cr\//) {
2916: if (!grep(/^cr$/,@{$roles})) {
2917: next;
2918: }
2919: } else {
2920: next;
2921: }
2922: }
2923: }
2924: if ($hidepriv) {
2925: if ($context eq 'userroles') {
2926: if ((&privileged($username,$domain)) &&
2927: (!$nothide{$username.':'.$domain})) {
2928: next;
2929: }
2930: } else {
2931: unless (ref($privileged{$domain}) eq 'HASH') {
2932: my %dompersonnel =
2933: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2934: $privileged{$domain} = {};
2935: if (keys(%dompersonnel)) {
2936: foreach my $server (keys(%dompersonnel)) {
2937: if (ref($dompersonnel{$server}) eq 'HASH') {
2938: foreach my $user (keys(%{$dompersonnel{$server}})) {
2939: my ($trole,$uname,$udom) = split(/:/,$user);
2940: $privileged{$udom}{$uname} = $trole;
2941: }
2942: }
2943: }
2944: }
2945: }
2946: if (exists($privileged{$domain}{$username})) {
2947: if (!$nothide{$username.':'.$domain}) {
2948: next;
2949: }
2950: }
2951: }
2952: }
2953: if ($withsec) {
2954: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2955: $tstart.':'.$tend;
2956: } else {
2957: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2958: }
2959: }
2960: return %returnhash;
2961: }
2962:
2963: # ----------------------------------------------------- Frontpage Announcements
2964: #
2965: #
2966:
2967: sub postannounce {
2968: my ($server,$text)=@_;
2969: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2970: unless ($text=~/\w/) { $text=''; }
2971: return &reply('setannounce:'.&escape($text),$server);
2972: }
2973:
2974: sub getannounce {
2975:
2976: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2977: my $announcement='';
2978: while (my $line = <$fh>) { $announcement .= $line; }
2979: close($fh);
2980: if ($announcement=~/\w/) {
2981: return
2982: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2983: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2984: } else {
2985: return '';
2986: }
2987: } else {
2988: return '';
2989: }
2990: }
2991:
2992: # ---------------------------------------------------------- Course ID routines
2993: # Deal with domain's nohist_courseid.db files
2994: #
2995:
2996: sub courseidput {
2997: my ($domain,$storehash,$coursehome,$caller) = @_;
2998: my $outcome;
2999: if ($caller eq 'timeonly') {
3000: my $cids = '';
3001: foreach my $item (keys(%$storehash)) {
3002: $cids.=&escape($item).'&';
3003: }
3004: $cids=~s/\&$//;
3005: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3006: $coursehome);
3007: } else {
3008: my $items = '';
3009: foreach my $item (keys(%$storehash)) {
3010: $items.= &escape($item).'='.
3011: &freeze_escape($$storehash{$item}).'&';
3012: }
3013: $items=~s/\&$//;
3014: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3015: $coursehome);
3016: }
3017: if ($outcome eq 'unknown_cmd') {
3018: my $what;
3019: foreach my $cid (keys(%$storehash)) {
3020: $what .= &escape($cid).'=';
3021: foreach my $item ('description','inst_code','owner','type') {
3022: $what .= &escape($storehash->{$cid}{$item}).':';
3023: }
3024: $what =~ s/\:$/&/;
3025: }
3026: $what =~ s/\&$//;
3027: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3028: } else {
3029: return $outcome;
3030: }
3031: }
3032:
3033: sub courseiddump {
3034: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3035: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3036: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3037: $cloneonly,$createdbefore,$createdafter,$creationcontext)=@_;
3038: my $as_hash = 1;
3039: my %returnhash;
3040: if (!$domfilter) { $domfilter=''; }
3041: my %libserv = &all_library();
3042: foreach my $tryserver (keys(%libserv)) {
3043: if ( ( $hostidflag == 1
3044: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3045: || (!defined($hostidflag)) ) {
3046:
3047: if (($domfilter eq '') ||
3048: (&host_domain($tryserver) eq $domfilter)) {
3049: my $rep =
3050: &reply('courseiddump:'.&host_domain($tryserver).':'.
3051: $sincefilter.':'.&escape($descfilter).':'.
3052: &escape($instcodefilter).':'.&escape($ownerfilter).
3053: ':'.&escape($coursefilter).':'.&escape($typefilter).
3054: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3055: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3056: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3057: &escape($cc_clone).':'.$cloneonly.':'.
3058: &escape($createdbefore).':'.&escape($createdafter).':'.
3059: &escape($creationcontext),$tryserver);
3060: my @pairs=split(/\&/,$rep);
3061: foreach my $item (@pairs) {
3062: my ($key,$value)=split(/\=/,$item,2);
3063: $key = &unescape($key);
3064: next if ($key =~ /^error: 2 /);
3065: my $result = &thaw_unescape($value);
3066: if (ref($result) eq 'HASH') {
3067: $returnhash{$key}=$result;
3068: } else {
3069: my @responses = split(/:/,$value);
3070: my @items = ('description','inst_code','owner','type');
3071: for (my $i=0; $i<@responses; $i++) {
3072: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3073: }
3074: }
3075: }
3076: }
3077: }
3078: }
3079: return %returnhash;
3080: }
3081:
3082: # ---------------------------------------------------------- DC e-mail
3083:
3084: sub dcmailput {
3085: my ($domain,$msgid,$message,$server)=@_;
3086: my $status = &Apache::lonnet::critical(
3087: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3088: &escape($message),$server);
3089: return $status;
3090: }
3091:
3092: sub dcmaildump {
3093: my ($dom,$startdate,$enddate,$senders) = @_;
3094: my %returnhash=();
3095:
3096: if (defined(&domain($dom,'primary'))) {
3097: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3098: &escape($enddate).':';
3099: my @esc_senders=map { &escape($_)} @$senders;
3100: $cmd.=&escape(join('&',@esc_senders));
3101: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3102: my ($key,$value) = split(/\=/,$line,2);
3103: if (($key) && ($value)) {
3104: $returnhash{&unescape($key)} = &unescape($value);
3105: }
3106: }
3107: }
3108: return %returnhash;
3109: }
3110: # ---------------------------------------------------------- Domain roles
3111:
3112: sub get_domain_roles {
3113: my ($dom,$roles,$startdate,$enddate)=@_;
3114: if ((!defined($startdate)) || ($startdate eq '')) {
3115: $startdate = '.';
3116: }
3117: if ((!defined($enddate)) || ($enddate eq '')) {
3118: $enddate = '.';
3119: }
3120: my $rolelist;
3121: if (ref($roles) eq 'ARRAY') {
3122: $rolelist = join(':',@{$roles});
3123: }
3124: my %personnel = ();
3125:
3126: my %servers = &get_servers($dom,'library');
3127: foreach my $tryserver (keys(%servers)) {
3128: %{$personnel{$tryserver}}=();
3129: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3130: &escape($startdate).':'.
3131: &escape($enddate).':'.
3132: &escape($rolelist), $tryserver))) {
3133: my ($key,$value) = split(/\=/,$line,2);
3134: if (($key) && ($value)) {
3135: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3136: }
3137: }
3138: }
3139: return %personnel;
3140: }
3141:
3142: # ----------------------------------------------------------- Check out an item
3143:
3144: sub get_first_access {
3145: my ($type,$argsymb)=@_;
3146: my ($symb,$courseid,$udom,$uname)=&whichuser();
3147: if ($argsymb) { $symb=$argsymb; }
3148: my ($map,$id,$res)=&decode_symb($symb);
3149: if ($type eq 'course') {
3150: $res='course';
3151: } elsif ($type eq 'map') {
3152: $res=&symbread($map);
3153: } else {
3154: $res=$symb;
3155: }
3156: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3157: return $times{"$courseid\0$res"};
3158: }
3159:
3160: sub set_first_access {
3161: my ($type)=@_;
3162: my ($symb,$courseid,$udom,$uname)=&whichuser();
3163: my ($map,$id,$res)=&decode_symb($symb);
3164: if ($type eq 'course') {
3165: $res='course';
3166: } elsif ($type eq 'map') {
3167: $res=&symbread($map);
3168: } else {
3169: $res=$symb;
3170: }
3171: my $firstaccess=&get_first_access($type,$symb);
3172: if (!$firstaccess) {
3173: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3174: }
3175: return 'already_set';
3176: }
3177:
3178: sub checkout {
3179: my ($symb,$tuname,$tudom,$tcrsid)=@_;
3180: my $now=time;
3181: my $lonhost=$perlvar{'lonHostID'};
3182: my $infostr=&escape(
3183: 'CHECKOUTTOKEN&'.
3184: $tuname.'&'.
3185: $tudom.'&'.
3186: $tcrsid.'&'.
3187: $symb.'&'.
3188: $now.'&'.$ENV{'REMOTE_ADDR'});
3189: my $token=&reply('tmpput:'.$infostr,$lonhost);
3190: if ($token=~/^error\:/) {
3191: &logthis("<font color=\"blue\">WARNING: ".
3192: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
3193: "</font>");
3194: return '';
3195: }
3196:
3197: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
3198: $token=~tr/a-z/A-Z/;
3199:
3200: my %infohash=('resource.0.outtoken' => $token,
3201: 'resource.0.checkouttime' => $now,
3202: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
3203:
3204: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3205: return '';
3206: } else {
3207: &logthis("<font color=\"blue\">WARNING: ".
3208: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
3209: "</font>");
3210: }
3211:
3212: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3213: &escape('Checkout '.$infostr.' - '.
3214: $token)) ne 'ok') {
3215: return '';
3216: } else {
3217: &logthis("<font color=\"blue\">WARNING: ".
3218: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
3219: "</font>");
3220: }
3221: return $token;
3222: }
3223:
3224: # ------------------------------------------------------------ Check in an item
3225:
3226: sub checkin {
3227: my $token=shift;
3228: my $now=time;
3229: my ($ta,$tb,$lonhost)=split(/\*/,$token);
3230: $lonhost=~tr/A-Z/a-z/;
3231: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
3232: $dtoken=~s/\W/\_/g;
3233: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
3234: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
3235:
3236: unless (($tuname) && ($tudom)) {
3237: &logthis('Check in '.$token.' ('.$dtoken.') failed');
3238: return '';
3239: }
3240:
3241: unless (&allowed('mgr',$tcrsid)) {
3242: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3243: $env{'user.name'}.' - '.$env{'user.domain'});
3244: return '';
3245: }
3246:
3247: my %infohash=('resource.0.intoken' => $token,
3248: 'resource.0.checkintime' => $now,
3249: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3250:
3251: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3252: return '';
3253: }
3254:
3255: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3256: &escape('Checkin - '.$token)) ne 'ok') {
3257: return '';
3258: }
3259:
3260: return ($symb,$tuname,$tudom,$tcrsid);
3261: }
3262:
3263: # --------------------------------------------- Set Expire Date for Spreadsheet
3264:
3265: sub expirespread {
3266: my ($uname,$udom,$stype,$usymb)=@_;
3267: my $cid=$env{'request.course.id'};
3268: if ($cid) {
3269: my $now=time;
3270: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3271: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3272: $env{'course.'.$cid.'.num'}.
3273: ':nohist_expirationdates:'.
3274: &escape($key).'='.$now,
3275: $env{'course.'.$cid.'.home'})
3276: }
3277: return 'ok';
3278: }
3279:
3280: # ----------------------------------------------------- Devalidate Spreadsheets
3281:
3282: sub devalidate {
3283: my ($symb,$uname,$udom)=@_;
3284: my $cid=$env{'request.course.id'};
3285: if ($cid) {
3286: # delete the stored spreadsheets for
3287: # - the student level sheet of this user in course's homespace
3288: # - the assessment level sheet for this resource
3289: # for this user in user's homespace
3290: # - current conditional state info
3291: my $key=$uname.':'.$udom.':';
3292: my $status=
3293: &del('nohist_calculatedsheets',
3294: [$key.'studentcalc:'],
3295: $env{'course.'.$cid.'.domain'},
3296: $env{'course.'.$cid.'.num'})
3297: .' '.
3298: &del('nohist_calculatedsheets_'.$cid,
3299: [$key.'assesscalc:'.$symb],$udom,$uname);
3300: unless ($status eq 'ok ok') {
3301: &logthis('Could not devalidate spreadsheet '.
3302: $uname.' at '.$udom.' for '.
3303: $symb.': '.$status);
3304: }
3305: &delenv('user.state.'.$cid);
3306: }
3307: }
3308:
3309: sub get_scalar {
3310: my ($string,$end) = @_;
3311: my $value;
3312: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3313: $value = $1;
3314: } elsif ($$string =~ s/^([^&]*?)&//) {
3315: $value = $1;
3316: }
3317: return &unescape($value);
3318: }
3319:
3320: sub array2str {
3321: my (@array) = @_;
3322: my $result=&arrayref2str(\@array);
3323: $result=~s/^__ARRAY_REF__//;
3324: $result=~s/__END_ARRAY_REF__$//;
3325: return $result;
3326: }
3327:
3328: sub arrayref2str {
3329: my ($arrayref) = @_;
3330: my $result='__ARRAY_REF__';
3331: foreach my $elem (@$arrayref) {
3332: if(ref($elem) eq 'ARRAY') {
3333: $result.=&arrayref2str($elem).'&';
3334: } elsif(ref($elem) eq 'HASH') {
3335: $result.=&hashref2str($elem).'&';
3336: } elsif(ref($elem)) {
3337: #print("Got a ref of ".(ref($elem))." skipping.");
3338: } else {
3339: $result.=&escape($elem).'&';
3340: }
3341: }
3342: $result=~s/\&$//;
3343: $result .= '__END_ARRAY_REF__';
3344: return $result;
3345: }
3346:
3347: sub hash2str {
3348: my (%hash) = @_;
3349: my $result=&hashref2str(\%hash);
3350: $result=~s/^__HASH_REF__//;
3351: $result=~s/__END_HASH_REF__$//;
3352: return $result;
3353: }
3354:
3355: sub hashref2str {
3356: my ($hashref)=@_;
3357: my $result='__HASH_REF__';
3358: foreach my $key (sort(keys(%$hashref))) {
3359: if (ref($key) eq 'ARRAY') {
3360: $result.=&arrayref2str($key).'=';
3361: } elsif (ref($key) eq 'HASH') {
3362: $result.=&hashref2str($key).'=';
3363: } elsif (ref($key)) {
3364: $result.='=';
3365: #print("Got a ref of ".(ref($key))." skipping.");
3366: } else {
3367: if ($key) {$result.=&escape($key).'=';} else { last; }
3368: }
3369:
3370: if(ref($hashref->{$key}) eq 'ARRAY') {
3371: $result.=&arrayref2str($hashref->{$key}).'&';
3372: } elsif(ref($hashref->{$key}) eq 'HASH') {
3373: $result.=&hashref2str($hashref->{$key}).'&';
3374: } elsif(ref($hashref->{$key})) {
3375: $result.='&';
3376: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3377: } else {
3378: $result.=&escape($hashref->{$key}).'&';
3379: }
3380: }
3381: $result=~s/\&$//;
3382: $result .= '__END_HASH_REF__';
3383: return $result;
3384: }
3385:
3386: sub str2hash {
3387: my ($string)=@_;
3388: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3389: return %$hash;
3390: }
3391:
3392: sub str2hashref {
3393: my ($string) = @_;
3394:
3395: my %hash;
3396:
3397: if($string !~ /^__HASH_REF__/) {
3398: if (! ($string eq '' || !defined($string))) {
3399: $hash{'error'}='Not hash reference';
3400: }
3401: return (\%hash, $string);
3402: }
3403:
3404: $string =~ s/^__HASH_REF__//;
3405:
3406: while($string !~ /^__END_HASH_REF__/) {
3407: #key
3408: my $key='';
3409: if($string =~ /^__HASH_REF__/) {
3410: ($key, $string)=&str2hashref($string);
3411: if(defined($key->{'error'})) {
3412: $hash{'error'}='Bad data';
3413: return (\%hash, $string);
3414: }
3415: } elsif($string =~ /^__ARRAY_REF__/) {
3416: ($key, $string)=&str2arrayref($string);
3417: if($key->[0] eq 'Array reference error') {
3418: $hash{'error'}='Bad data';
3419: return (\%hash, $string);
3420: }
3421: } else {
3422: $string =~ s/^(.*?)=//;
3423: $key=&unescape($1);
3424: }
3425: $string =~ s/^=//;
3426:
3427: #value
3428: my $value='';
3429: if($string =~ /^__HASH_REF__/) {
3430: ($value, $string)=&str2hashref($string);
3431: if(defined($value->{'error'})) {
3432: $hash{'error'}='Bad data';
3433: return (\%hash, $string);
3434: }
3435: } elsif($string =~ /^__ARRAY_REF__/) {
3436: ($value, $string)=&str2arrayref($string);
3437: if($value->[0] eq 'Array reference error') {
3438: $hash{'error'}='Bad data';
3439: return (\%hash, $string);
3440: }
3441: } else {
3442: $value=&get_scalar(\$string,'__END_HASH_REF__');
3443: }
3444: $string =~ s/^&//;
3445:
3446: $hash{$key}=$value;
3447: }
3448:
3449: $string =~ s/^__END_HASH_REF__//;
3450:
3451: return (\%hash, $string);
3452: }
3453:
3454: sub str2array {
3455: my ($string)=@_;
3456: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3457: return @$array;
3458: }
3459:
3460: sub str2arrayref {
3461: my ($string) = @_;
3462: my @array;
3463:
3464: if($string !~ /^__ARRAY_REF__/) {
3465: if (! ($string eq '' || !defined($string))) {
3466: $array[0]='Array reference error';
3467: }
3468: return (\@array, $string);
3469: }
3470:
3471: $string =~ s/^__ARRAY_REF__//;
3472:
3473: while($string !~ /^__END_ARRAY_REF__/) {
3474: my $value='';
3475: if($string =~ /^__HASH_REF__/) {
3476: ($value, $string)=&str2hashref($string);
3477: if(defined($value->{'error'})) {
3478: $array[0] ='Array reference error';
3479: return (\@array, $string);
3480: }
3481: } elsif($string =~ /^__ARRAY_REF__/) {
3482: ($value, $string)=&str2arrayref($string);
3483: if($value->[0] eq 'Array reference error') {
3484: $array[0] ='Array reference error';
3485: return (\@array, $string);
3486: }
3487: } else {
3488: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3489: }
3490: $string =~ s/^&//;
3491:
3492: push(@array, $value);
3493: }
3494:
3495: $string =~ s/^__END_ARRAY_REF__//;
3496:
3497: return (\@array, $string);
3498: }
3499:
3500: # -------------------------------------------------------------------Temp Store
3501:
3502: sub tmpreset {
3503: my ($symb,$namespace,$domain,$stuname) = @_;
3504: if (!$symb) {
3505: $symb=&symbread();
3506: if (!$symb) { $symb= $env{'request.url'}; }
3507: }
3508: $symb=escape($symb);
3509:
3510: if (!$namespace) { $namespace=$env{'request.state'}; }
3511: $namespace=~s/\//\_/g;
3512: $namespace=~s/\W//g;
3513:
3514: if (!$domain) { $domain=$env{'user.domain'}; }
3515: if (!$stuname) { $stuname=$env{'user.name'}; }
3516: if ($domain eq 'public' && $stuname eq 'public') {
3517: $stuname=$ENV{'REMOTE_ADDR'};
3518: }
3519: my $path=$perlvar{'lonDaemons'}.'/tmp';
3520: my %hash;
3521: if (tie(%hash,'GDBM_File',
3522: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3523: &GDBM_WRCREAT(),0640)) {
3524: foreach my $key (keys(%hash)) {
3525: if ($key=~ /:$symb/) {
3526: delete($hash{$key});
3527: }
3528: }
3529: }
3530: }
3531:
3532: sub tmpstore {
3533: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3534:
3535: if (!$symb) {
3536: $symb=&symbread();
3537: if (!$symb) { $symb= $env{'request.url'}; }
3538: }
3539: $symb=escape($symb);
3540:
3541: if (!$namespace) {
3542: # I don't think we would ever want to store this for a course.
3543: # it seems this will only be used if we don't have a course.
3544: #$namespace=$env{'request.course.id'};
3545: #if (!$namespace) {
3546: $namespace=$env{'request.state'};
3547: #}
3548: }
3549: $namespace=~s/\//\_/g;
3550: $namespace=~s/\W//g;
3551: if (!$domain) { $domain=$env{'user.domain'}; }
3552: if (!$stuname) { $stuname=$env{'user.name'}; }
3553: if ($domain eq 'public' && $stuname eq 'public') {
3554: $stuname=$ENV{'REMOTE_ADDR'};
3555: }
3556: my $now=time;
3557: my %hash;
3558: my $path=$perlvar{'lonDaemons'}.'/tmp';
3559: if (tie(%hash,'GDBM_File',
3560: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3561: &GDBM_WRCREAT(),0640)) {
3562: $hash{"version:$symb"}++;
3563: my $version=$hash{"version:$symb"};
3564: my $allkeys='';
3565: foreach my $key (keys(%$storehash)) {
3566: $allkeys.=$key.':';
3567: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3568: }
3569: $hash{"$version:$symb:timestamp"}=$now;
3570: $allkeys.='timestamp';
3571: $hash{"$version:keys:$symb"}=$allkeys;
3572: if (untie(%hash)) {
3573: return 'ok';
3574: } else {
3575: return "error:$!";
3576: }
3577: } else {
3578: return "error:$!";
3579: }
3580: }
3581:
3582: # -----------------------------------------------------------------Temp Restore
3583:
3584: sub tmprestore {
3585: my ($symb,$namespace,$domain,$stuname) = @_;
3586:
3587: if (!$symb) {
3588: $symb=&symbread();
3589: if (!$symb) { $symb= $env{'request.url'}; }
3590: }
3591: $symb=escape($symb);
3592:
3593: if (!$namespace) { $namespace=$env{'request.state'}; }
3594:
3595: if (!$domain) { $domain=$env{'user.domain'}; }
3596: if (!$stuname) { $stuname=$env{'user.name'}; }
3597: if ($domain eq 'public' && $stuname eq 'public') {
3598: $stuname=$ENV{'REMOTE_ADDR'};
3599: }
3600: my %returnhash;
3601: $namespace=~s/\//\_/g;
3602: $namespace=~s/\W//g;
3603: my %hash;
3604: my $path=$perlvar{'lonDaemons'}.'/tmp';
3605: if (tie(%hash,'GDBM_File',
3606: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3607: &GDBM_READER(),0640)) {
3608: my $version=$hash{"version:$symb"};
3609: $returnhash{'version'}=$version;
3610: my $scope;
3611: for ($scope=1;$scope<=$version;$scope++) {
3612: my $vkeys=$hash{"$scope:keys:$symb"};
3613: my @keys=split(/:/,$vkeys);
3614: my $key;
3615: $returnhash{"$scope:keys"}=$vkeys;
3616: foreach $key (@keys) {
3617: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3618: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3619: }
3620: }
3621: if (!(untie(%hash))) {
3622: return "error:$!";
3623: }
3624: } else {
3625: return "error:$!";
3626: }
3627: return %returnhash;
3628: }
3629:
3630: # ----------------------------------------------------------------------- Store
3631:
3632: sub store {
3633: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3634: my $home='';
3635:
3636: if ($stuname) { $home=&homeserver($stuname,$domain); }
3637:
3638: $symb=&symbclean($symb);
3639: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3640:
3641: if (!$domain) { $domain=$env{'user.domain'}; }
3642: if (!$stuname) { $stuname=$env{'user.name'}; }
3643:
3644: &devalidate($symb,$stuname,$domain);
3645:
3646: $symb=escape($symb);
3647: if (!$namespace) {
3648: unless ($namespace=$env{'request.course.id'}) {
3649: return '';
3650: }
3651: }
3652: if (!$home) { $home=$env{'user.home'}; }
3653:
3654: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3655: $$storehash{'host'}=$perlvar{'lonHostID'};
3656:
3657: my $namevalue='';
3658: foreach my $key (keys(%$storehash)) {
3659: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3660: }
3661: $namevalue=~s/\&$//;
3662: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3663: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3664: }
3665:
3666: # -------------------------------------------------------------- Critical Store
3667:
3668: sub cstore {
3669: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3670: my $home='';
3671:
3672: if ($stuname) { $home=&homeserver($stuname,$domain); }
3673:
3674: $symb=&symbclean($symb);
3675: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3676:
3677: if (!$domain) { $domain=$env{'user.domain'}; }
3678: if (!$stuname) { $stuname=$env{'user.name'}; }
3679:
3680: &devalidate($symb,$stuname,$domain);
3681:
3682: $symb=escape($symb);
3683: if (!$namespace) {
3684: unless ($namespace=$env{'request.course.id'}) {
3685: return '';
3686: }
3687: }
3688: if (!$home) { $home=$env{'user.home'}; }
3689:
3690: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3691: $$storehash{'host'}=$perlvar{'lonHostID'};
3692:
3693: my $namevalue='';
3694: foreach my $key (keys(%$storehash)) {
3695: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3696: }
3697: $namevalue=~s/\&$//;
3698: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3699: return critical
3700: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3701: }
3702:
3703: # --------------------------------------------------------------------- Restore
3704:
3705: sub restore {
3706: my ($symb,$namespace,$domain,$stuname) = @_;
3707: my $home='';
3708:
3709: if ($stuname) { $home=&homeserver($stuname,$domain); }
3710:
3711: if (!$symb) {
3712: unless ($symb=escape(&symbread())) { return ''; }
3713: } else {
3714: $symb=&escape(&symbclean($symb));
3715: }
3716: if (!$namespace) {
3717: unless ($namespace=$env{'request.course.id'}) {
3718: return '';
3719: }
3720: }
3721: if (!$domain) { $domain=$env{'user.domain'}; }
3722: if (!$stuname) { $stuname=$env{'user.name'}; }
3723: if (!$home) { $home=$env{'user.home'}; }
3724: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3725:
3726: my %returnhash=();
3727: foreach my $line (split(/\&/,$answer)) {
3728: my ($name,$value)=split(/\=/,$line);
3729: $returnhash{&unescape($name)}=&thaw_unescape($value);
3730: }
3731: my $version;
3732: for ($version=1;$version<=$returnhash{'version'};$version++) {
3733: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3734: $returnhash{$item}=$returnhash{$version.':'.$item};
3735: }
3736: }
3737: return %returnhash;
3738: }
3739:
3740: # ---------------------------------------------------------- Course Description
3741:
3742: sub coursedescription {
3743: my ($courseid,$args)=@_;
3744: $courseid=~s/^\///;
3745: $courseid=~s/\_/\//g;
3746: my ($cdomain,$cnum)=split(/\//,$courseid);
3747: my $chome=&homeserver($cnum,$cdomain);
3748: my $normalid=$cdomain.'_'.$cnum;
3749: # need to always cache even if we get errors otherwise we keep
3750: # trying and trying and trying to get the course description.
3751: my %envhash=();
3752: my %returnhash=();
3753:
3754: my $expiretime=600;
3755: if ($env{'request.course.id'} eq $normalid) {
3756: $expiretime=120;
3757: }
3758:
3759: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3760: if (!$args->{'freshen_cache'}
3761: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3762: foreach my $key (keys(%env)) {
3763: next if ($key !~ /^\Q$prefix\E(.*)/);
3764: my ($setting) = $1;
3765: $returnhash{$setting} = $env{$key};
3766: }
3767: return %returnhash;
3768: }
3769:
3770: # get the data agin
3771: if (!$args->{'one_time'}) {
3772: $envhash{'course.'.$normalid.'.last_cache'}=time;
3773: }
3774:
3775: if ($chome ne 'no_host') {
3776: %returnhash=&dump('environment',$cdomain,$cnum);
3777: if (!exists($returnhash{'con_lost'})) {
3778: $returnhash{'home'}= $chome;
3779: $returnhash{'domain'} = $cdomain;
3780: $returnhash{'num'} = $cnum;
3781: if (!defined($returnhash{'type'})) {
3782: $returnhash{'type'} = 'Course';
3783: }
3784: while (my ($name,$value) = each %returnhash) {
3785: $envhash{'course.'.$normalid.'.'.$name}=$value;
3786: }
3787: $returnhash{'url'}=&clutter($returnhash{'url'});
3788: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3789: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3790: $envhash{'course.'.$normalid.'.home'}=$chome;
3791: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3792: $envhash{'course.'.$normalid.'.num'}=$cnum;
3793: }
3794: }
3795: if (!$args->{'one_time'}) {
3796: &appenv(\%envhash);
3797: }
3798: return %returnhash;
3799: }
3800:
3801: # -------------------------------------------------See if a user is privileged
3802:
3803: sub privileged {
3804: my ($username,$domain)=@_;
3805: my $rolesdump=&reply("dump:$domain:$username:roles",
3806: &homeserver($username,$domain));
3807: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
3808: ($rolesdump =~ /^error:/)) {
3809: return 0;
3810: }
3811: my $now=time;
3812: if ($rolesdump ne '') {
3813: foreach my $entry (split(/&/,$rolesdump)) {
3814: if ($entry!~/^rolesdef_/) {
3815: my ($area,$role)=split(/=/,$entry);
3816: $area=~s/\_\w\w$//;
3817: my ($trole,$tend,$tstart)=split(/_/,$role);
3818: if (($trole eq 'dc') || ($trole eq 'su')) {
3819: my $active=1;
3820: if ($tend) {
3821: if ($tend<$now) { $active=0; }
3822: }
3823: if ($tstart) {
3824: if ($tstart>$now) { $active=0; }
3825: }
3826: if ($active) { return 1; }
3827: }
3828: }
3829: }
3830: }
3831: return 0;
3832: }
3833:
3834: # -------------------------------------------------------- Get user privileges
3835:
3836: sub rolesinit {
3837: my ($domain,$username,$authhost)=@_;
3838: my $now=time;
3839: my %userroles = ('user.login.time' => $now);
3840: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3841: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
3842: ($rolesdump =~ /^error:/)) {
3843: return \%userroles;
3844: }
3845: my %allroles=();
3846: my %allgroups=();
3847: my $group_privs;
3848:
3849: if ($rolesdump ne '') {
3850: foreach my $entry (split(/&/,$rolesdump)) {
3851: if ($entry!~/^rolesdef_/) {
3852: my ($area,$role)=split(/=/,$entry);
3853: $area=~s/\_\w\w$//;
3854: my ($trole,$tend,$tstart,$group_privs);
3855: if ($role=~/^cr/) {
3856: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3857: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3858: ($tend,$tstart)=split('_',$trest);
3859: } else {
3860: $trole=$role;
3861: }
3862: } elsif ($role =~ m|^gr/|) {
3863: ($trole,$tend,$tstart) = split(/_/,$role);
3864: ($trole,$group_privs) = split(/\//,$trole);
3865: $group_privs = &unescape($group_privs);
3866: } else {
3867: ($trole,$tend,$tstart)=split(/_/,$role);
3868: }
3869: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3870: $username);
3871: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3872: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3873: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3874: if (($area ne '') && ($trole ne '')) {
3875: my $spec=$trole.'.'.$area;
3876: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3877: if ($trole =~ /^cr\//) {
3878: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3879: } elsif ($trole eq 'gr') {
3880: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3881: } else {
3882: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3883: }
3884: }
3885: }
3886: }
3887: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3888: $userroles{'user.adv'} = $adv;
3889: $userroles{'user.author'} = $author;
3890: $env{'user.adv'}=$adv;
3891: }
3892: return \%userroles;
3893: }
3894:
3895: sub set_arearole {
3896: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3897: # log the associated role with the area
3898: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3899: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3900: }
3901:
3902: sub custom_roleprivs {
3903: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3904: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3905: my $homsvr=homeserver($rauthor,$rdomain);
3906: if (&hostname($homsvr) ne '') {
3907: my ($rdummy,$roledef)=
3908: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3909: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3910: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3911: if (defined($syspriv)) {
3912: if ($trest =~ /^$match_community$/) {
3913: $syspriv =~ s/bre\&S//;
3914: }
3915: $$allroles{'cm./'}.=':'.$syspriv;
3916: $$allroles{$spec.'./'}.=':'.$syspriv;
3917: }
3918: if ($tdomain ne '') {
3919: if (defined($dompriv)) {
3920: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3921: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3922: }
3923: if (($trest ne '') && (defined($coursepriv))) {
3924: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3925: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3926: }
3927: }
3928: }
3929: }
3930: }
3931:
3932: sub group_roleprivs {
3933: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3934: my $access = 1;
3935: my $now = time;
3936: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3937: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3938: if ($access) {
3939: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3940: $$allgroups{$course}{$group} .=':'.$group_privs;
3941: }
3942: }
3943:
3944: sub standard_roleprivs {
3945: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3946: if (defined($pr{$trole.':s'})) {
3947: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3948: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3949: }
3950: if ($tdomain ne '') {
3951: if (defined($pr{$trole.':d'})) {
3952: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3953: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3954: }
3955: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3956: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3957: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3958: }
3959: }
3960: }
3961:
3962: sub set_userprivs {
3963: my ($userroles,$allroles,$allgroups) = @_;
3964: my $author=0;
3965: my $adv=0;
3966: my %grouproles = ();
3967: if (keys(%{$allgroups}) > 0) {
3968: foreach my $role (keys(%{$allroles})) {
3969: my ($trole,$area,$sec,$extendedarea);
3970: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3971: $trole = $1;
3972: $area = $2;
3973: $sec = $3;
3974: $extendedarea = $area.$sec;
3975: if (exists($$allgroups{$area})) {
3976: foreach my $group (keys(%{$$allgroups{$area}})) {
3977: my $spec = $trole.'.'.$extendedarea;
3978: $grouproles{$spec.'.'.$area.'/'.$group} =
3979: $$allgroups{$area}{$group};
3980: }
3981: }
3982: }
3983: }
3984: }
3985: foreach my $group (keys(%grouproles)) {
3986: $$allroles{$group} = $grouproles{$group};
3987: }
3988: foreach my $role (keys(%{$allroles})) {
3989: my %thesepriv;
3990: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3991: foreach my $item (split(/:/,$$allroles{$role})) {
3992: if ($item ne '') {
3993: my ($privilege,$restrictions)=split(/&/,$item);
3994: if ($restrictions eq '') {
3995: $thesepriv{$privilege}='F';
3996: } elsif ($thesepriv{$privilege} ne 'F') {
3997: $thesepriv{$privilege}.=$restrictions;
3998: }
3999: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4000: }
4001: }
4002: my $thesestr='';
4003: foreach my $priv (keys(%thesepriv)) {
4004: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4005: }
4006: $userroles->{'user.priv.'.$role} = $thesestr;
4007: }
4008: return ($author,$adv);
4009: }
4010:
4011: sub role_status {
4012: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4013: my @pwhere = ();
4014: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4015: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4016: unless (!defined($$role) || $$role eq '') {
4017: $$where=join('.',@pwhere);
4018: $$trolecode=$$role.'.'.$$where;
4019: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4020: $$tstatus='is';
4021: if ($$tstart && $$tstart>$then) {
4022: $$tstatus='future';
4023: if ($$tstart<$now) {
4024: if ($$tstart && $$tstart>$refresh) {
4025: if (($$where ne '') && ($$role ne '')) {
4026: my (%allroles,%allgroups,$group_privs);
4027: my %userroles = (
4028: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4029: );
4030: my $spec=$$role.'.'.$$where;
4031: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4032: if ($$role eq 'gr') {
4033: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4034: $env{'user.name'})=@_;
4035: my ($trole) = split('_',$role,1);
4036: (undef,my $group_privs) = split(/\//,$trole);
4037: $group_privs = &unescape($group_privs);
4038: }
4039: if ($$role =~ /^cr\//) {
4040: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4041: } elsif ($$role eq 'gr') {
4042: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4043: $env{'user.name'});
4044: my $trole = split('_',$rolehash{$$where.'_'.$$role},1);
4045: (undef,my $group_privs) = split(/\//,$trole);
4046: $group_privs = &unescape($group_privs);
4047: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4048: } else {
4049: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4050: }
4051: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups);
4052: &appenv(\%userroles,[$$role,'cm']);
4053: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4054: }
4055: }
4056: $$tstatus = 'is';
4057: }
4058: }
4059: if ($$tend) {
4060: if ($$tend<$then) {
4061: $$tstatus='expired';
4062: } elsif ($$tend<$now) {
4063: $$tstatus='will_not';
4064: }
4065: }
4066: }
4067: }
4068: }
4069:
4070: sub check_adhoc_privs {
4071: my ($cdom,$cnum,$then,$refresh,$now,$checkrole) = @_;
4072: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4073: if ($env{$cckey}) {
4074: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4075: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4076: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4077: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4078: }
4079: } else {
4080: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4081: }
4082: }
4083:
4084: sub set_adhoc_privileges {
4085: # role can be cc or ca
4086: my ($dcdom,$pickedcourse,$role) = @_;
4087: my $area = '/'.$dcdom.'/'.$pickedcourse;
4088: my $spec = $role.'.'.$area;
4089: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4090: $env{'user.name'});
4091: my %ccrole = ();
4092: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4093: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4094: &appenv(\%userroles,[$role,'cm']);
4095: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4096: &appenv( {'request.role' => $spec,
4097: 'request.role.domain' => $dcdom,
4098: 'request.course.sec' => ''
4099: }
4100: );
4101: my $tadv=0;
4102: if (&allowed('adv') eq 'F') { $tadv=1; }
4103: &appenv({'request.role.adv' => $tadv});
4104: }
4105:
4106: # --------------------------------------------------------------- get interface
4107:
4108: sub get {
4109: my ($namespace,$storearr,$udomain,$uname)=@_;
4110: my $items='';
4111: foreach my $item (@$storearr) {
4112: $items.=&escape($item).'&';
4113: }
4114: $items=~s/\&$//;
4115: if (!$udomain) { $udomain=$env{'user.domain'}; }
4116: if (!$uname) { $uname=$env{'user.name'}; }
4117: my $uhome=&homeserver($uname,$udomain);
4118:
4119: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4120: my @pairs=split(/\&/,$rep);
4121: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4122: return @pairs;
4123: }
4124: my %returnhash=();
4125: my $i=0;
4126: foreach my $item (@$storearr) {
4127: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4128: $i++;
4129: }
4130: return %returnhash;
4131: }
4132:
4133: # --------------------------------------------------------------- del interface
4134:
4135: sub del {
4136: my ($namespace,$storearr,$udomain,$uname)=@_;
4137: my $items='';
4138: foreach my $item (@$storearr) {
4139: $items.=&escape($item).'&';
4140: }
4141:
4142: $items=~s/\&$//;
4143: if (!$udomain) { $udomain=$env{'user.domain'}; }
4144: if (!$uname) { $uname=$env{'user.name'}; }
4145: my $uhome=&homeserver($uname,$udomain);
4146: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4147: }
4148:
4149: # -------------------------------------------------------------- dump interface
4150:
4151: sub dump {
4152: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4153: if (!$udomain) { $udomain=$env{'user.domain'}; }
4154: if (!$uname) { $uname=$env{'user.name'}; }
4155: my $uhome=&homeserver($uname,$udomain);
4156: if ($regexp) {
4157: $regexp=&escape($regexp);
4158: } else {
4159: $regexp='.';
4160: }
4161: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4162: my @pairs=split(/\&/,$rep);
4163: my %returnhash=();
4164: foreach my $item (@pairs) {
4165: my ($key,$value)=split(/=/,$item,2);
4166: $key = &unescape($key);
4167: next if ($key =~ /^error: 2 /);
4168: $returnhash{$key}=&thaw_unescape($value);
4169: }
4170: return %returnhash;
4171: }
4172:
4173: # --------------------------------------------------------- dumpstore interface
4174:
4175: sub dumpstore {
4176: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4177: if (!$udomain) { $udomain=$env{'user.domain'}; }
4178: if (!$uname) { $uname=$env{'user.name'}; }
4179: my $uhome=&homeserver($uname,$udomain);
4180: if ($regexp) {
4181: $regexp=&escape($regexp);
4182: } else {
4183: $regexp='.';
4184: }
4185: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4186: my @pairs=split(/\&/,$rep);
4187: my %returnhash=();
4188: foreach my $item (@pairs) {
4189: my ($key,$value)=split(/=/,$item,2);
4190: next if ($key =~ /^error: 2 /);
4191: $returnhash{$key}=&thaw_unescape($value);
4192: }
4193: return %returnhash;
4194: }
4195:
4196: # -------------------------------------------------------------- keys interface
4197:
4198: sub getkeys {
4199: my ($namespace,$udomain,$uname)=@_;
4200: if (!$udomain) { $udomain=$env{'user.domain'}; }
4201: if (!$uname) { $uname=$env{'user.name'}; }
4202: my $uhome=&homeserver($uname,$udomain);
4203: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4204: my @keyarray=();
4205: foreach my $key (split(/\&/,$rep)) {
4206: next if ($key =~ /^error: 2 /);
4207: push(@keyarray,&unescape($key));
4208: }
4209: return @keyarray;
4210: }
4211:
4212: # --------------------------------------------------------------- currentdump
4213: sub currentdump {
4214: my ($courseid,$sdom,$sname)=@_;
4215: $courseid = $env{'request.course.id'} if (! defined($courseid));
4216: $sdom = $env{'user.domain'} if (! defined($sdom));
4217: $sname = $env{'user.name'} if (! defined($sname));
4218: my $uhome = &homeserver($sname,$sdom);
4219: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4220: return if ($rep =~ /^(error:|no_such_host)/);
4221: #
4222: my %returnhash=();
4223: #
4224: if ($rep eq "unknown_cmd") {
4225: # an old lond will not know currentdump
4226: # Do a dump and make it look like a currentdump
4227: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4228: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4229: my %hash = @tmp;
4230: @tmp=();
4231: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4232: } else {
4233: my @pairs=split(/\&/,$rep);
4234: foreach my $pair (@pairs) {
4235: my ($key,$value)=split(/=/,$pair,2);
4236: my ($symb,$param) = split(/:/,$key);
4237: $returnhash{&unescape($symb)}->{&unescape($param)} =
4238: &thaw_unescape($value);
4239: }
4240: }
4241: return %returnhash;
4242: }
4243:
4244: sub convert_dump_to_currentdump{
4245: my %hash = %{shift()};
4246: my %returnhash;
4247: # Code ripped from lond, essentially. The only difference
4248: # here is the unescaping done by lonnet::dump(). Conceivably
4249: # we might run in to problems with parameter names =~ /^v\./
4250: while (my ($key,$value) = each(%hash)) {
4251: my ($v,$symb,$param) = split(/:/,$key);
4252: $symb = &unescape($symb);
4253: $param = &unescape($param);
4254: next if ($v eq 'version' || $symb eq 'keys');
4255: next if (exists($returnhash{$symb}) &&
4256: exists($returnhash{$symb}->{$param}) &&
4257: $returnhash{$symb}->{'v.'.$param} > $v);
4258: $returnhash{$symb}->{$param}=$value;
4259: $returnhash{$symb}->{'v.'.$param}=$v;
4260: }
4261: #
4262: # Remove all of the keys in the hashes which keep track of
4263: # the version of the parameter.
4264: while (my ($symb,$param_hash) = each(%returnhash)) {
4265: # use a foreach because we are going to delete from the hash.
4266: foreach my $key (keys(%$param_hash)) {
4267: delete($param_hash->{$key}) if ($key =~ /^v\./);
4268: }
4269: }
4270: return \%returnhash;
4271: }
4272:
4273: # ------------------------------------------------------ critical inc interface
4274:
4275: sub cinc {
4276: return &inc(@_,'critical');
4277: }
4278:
4279: # --------------------------------------------------------------- inc interface
4280:
4281: sub inc {
4282: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4283: if (!$udomain) { $udomain=$env{'user.domain'}; }
4284: if (!$uname) { $uname=$env{'user.name'}; }
4285: my $uhome=&homeserver($uname,$udomain);
4286: my $items='';
4287: if (! ref($store)) {
4288: # got a single value, so use that instead
4289: $items = &escape($store).'=&';
4290: } elsif (ref($store) eq 'SCALAR') {
4291: $items = &escape($$store).'=&';
4292: } elsif (ref($store) eq 'ARRAY') {
4293: $items = join('=&',map {&escape($_);} @{$store});
4294: } elsif (ref($store) eq 'HASH') {
4295: while (my($key,$value) = each(%{$store})) {
4296: $items.= &escape($key).'='.&escape($value).'&';
4297: }
4298: }
4299: $items=~s/\&$//;
4300: if ($critical) {
4301: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4302: } else {
4303: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4304: }
4305: }
4306:
4307: # --------------------------------------------------------------- put interface
4308:
4309: sub put {
4310: my ($namespace,$storehash,$udomain,$uname)=@_;
4311: if (!$udomain) { $udomain=$env{'user.domain'}; }
4312: if (!$uname) { $uname=$env{'user.name'}; }
4313: my $uhome=&homeserver($uname,$udomain);
4314: my $items='';
4315: foreach my $item (keys(%$storehash)) {
4316: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4317: }
4318: $items=~s/\&$//;
4319: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4320: }
4321:
4322: # ------------------------------------------------------------ newput interface
4323:
4324: sub newput {
4325: my ($namespace,$storehash,$udomain,$uname)=@_;
4326: if (!$udomain) { $udomain=$env{'user.domain'}; }
4327: if (!$uname) { $uname=$env{'user.name'}; }
4328: my $uhome=&homeserver($uname,$udomain);
4329: my $items='';
4330: foreach my $key (keys(%$storehash)) {
4331: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4332: }
4333: $items=~s/\&$//;
4334: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4335: }
4336:
4337: # --------------------------------------------------------- putstore interface
4338:
4339: sub putstore {
4340: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4341: if (!$udomain) { $udomain=$env{'user.domain'}; }
4342: if (!$uname) { $uname=$env{'user.name'}; }
4343: my $uhome=&homeserver($uname,$udomain);
4344: my $items='';
4345: foreach my $key (keys(%$storehash)) {
4346: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4347: }
4348: $items=~s/\&$//;
4349: my $esc_symb=&escape($symb);
4350: my $esc_v=&escape($version);
4351: my $reply =
4352: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4353: $uhome);
4354: if ($reply eq 'unknown_cmd') {
4355: # gfall back to way things use to be done
4356: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4357: $uname);
4358: }
4359: return $reply;
4360: }
4361:
4362: sub old_putstore {
4363: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4364: if (!$udomain) { $udomain=$env{'user.domain'}; }
4365: if (!$uname) { $uname=$env{'user.name'}; }
4366: my $uhome=&homeserver($uname,$udomain);
4367: my %newstorehash;
4368: foreach my $item (keys(%$storehash)) {
4369: my $key = $version.':'.&escape($symb).':'.$item;
4370: $newstorehash{$key} = $storehash->{$item};
4371: }
4372: my $items='';
4373: my %allitems = ();
4374: foreach my $item (keys(%newstorehash)) {
4375: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4376: my $key = $1.':keys:'.$2;
4377: $allitems{$key} .= $3.':';
4378: }
4379: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4380: }
4381: foreach my $item (keys(%allitems)) {
4382: $allitems{$item} =~ s/\:$//;
4383: $items.= $item.'='.$allitems{$item}.'&';
4384: }
4385: $items=~s/\&$//;
4386: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4387: }
4388:
4389: # ------------------------------------------------------ critical put interface
4390:
4391: sub cput {
4392: my ($namespace,$storehash,$udomain,$uname)=@_;
4393: if (!$udomain) { $udomain=$env{'user.domain'}; }
4394: if (!$uname) { $uname=$env{'user.name'}; }
4395: my $uhome=&homeserver($uname,$udomain);
4396: my $items='';
4397: foreach my $item (keys(%$storehash)) {
4398: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4399: }
4400: $items=~s/\&$//;
4401: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4402: }
4403:
4404: # -------------------------------------------------------------- eget interface
4405:
4406: sub eget {
4407: my ($namespace,$storearr,$udomain,$uname)=@_;
4408: my $items='';
4409: foreach my $item (@$storearr) {
4410: $items.=&escape($item).'&';
4411: }
4412: $items=~s/\&$//;
4413: if (!$udomain) { $udomain=$env{'user.domain'}; }
4414: if (!$uname) { $uname=$env{'user.name'}; }
4415: my $uhome=&homeserver($uname,$udomain);
4416: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4417: my @pairs=split(/\&/,$rep);
4418: my %returnhash=();
4419: my $i=0;
4420: foreach my $item (@$storearr) {
4421: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4422: $i++;
4423: }
4424: return %returnhash;
4425: }
4426:
4427: # ------------------------------------------------------------ tmpput interface
4428: sub tmpput {
4429: my ($storehash,$server,$context)=@_;
4430: my $items='';
4431: foreach my $item (keys(%$storehash)) {
4432: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4433: }
4434: $items=~s/\&$//;
4435: if (defined($context)) {
4436: $items .= ':'.&escape($context);
4437: }
4438: return &reply("tmpput:$items",$server);
4439: }
4440:
4441: # ------------------------------------------------------------ tmpget interface
4442: sub tmpget {
4443: my ($token,$server)=@_;
4444: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4445: my $rep=&reply("tmpget:$token",$server);
4446: my %returnhash;
4447: foreach my $item (split(/\&/,$rep)) {
4448: my ($key,$value)=split(/=/,$item);
4449: next if ($key =~ /^error: 2 /);
4450: $returnhash{&unescape($key)}=&thaw_unescape($value);
4451: }
4452: return %returnhash;
4453: }
4454:
4455: # ------------------------------------------------------------ tmpget interface
4456: sub tmpdel {
4457: my ($token,$server)=@_;
4458: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4459: return &reply("tmpdel:$token",$server);
4460: }
4461:
4462: # -------------------------------------------------- portfolio access checking
4463:
4464: sub portfolio_access {
4465: my ($requrl) = @_;
4466: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4467: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4468: if ($result) {
4469: my %setters;
4470: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4471: my ($startblock,$endblock) =
4472: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4473: if ($startblock && $endblock) {
4474: return 'B';
4475: }
4476: } else {
4477: my ($startblock,$endblock) =
4478: &Apache::loncommon::blockcheck(\%setters,'port');
4479: if ($startblock && $endblock) {
4480: return 'B';
4481: }
4482: }
4483: }
4484: if ($result eq 'ok') {
4485: return 'F';
4486: } elsif ($result =~ /^[^:]+:guest_/) {
4487: return 'A';
4488: }
4489: return '';
4490: }
4491:
4492: sub get_portfolio_access {
4493: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4494:
4495: if (!ref($access_hash)) {
4496: my $current_perms = &get_portfile_permissions($udom,$unum);
4497: my %access_controls = &get_access_controls($current_perms,$group,
4498: $file_name);
4499: $access_hash = $access_controls{$file_name};
4500: }
4501:
4502: my ($public,$guest,@domains,@users,@courses,@groups);
4503: my $now = time;
4504: if (ref($access_hash) eq 'HASH') {
4505: foreach my $key (keys(%{$access_hash})) {
4506: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4507: if ($start > $now) {
4508: next;
4509: }
4510: if ($end && $end<$now) {
4511: next;
4512: }
4513: if ($scope eq 'public') {
4514: $public = $key;
4515: last;
4516: } elsif ($scope eq 'guest') {
4517: $guest = $key;
4518: } elsif ($scope eq 'domains') {
4519: push(@domains,$key);
4520: } elsif ($scope eq 'users') {
4521: push(@users,$key);
4522: } elsif ($scope eq 'course') {
4523: push(@courses,$key);
4524: } elsif ($scope eq 'group') {
4525: push(@groups,$key);
4526: }
4527: }
4528: if ($public) {
4529: return 'ok';
4530: }
4531: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4532: if ($guest) {
4533: return $guest;
4534: }
4535: } else {
4536: if (@domains > 0) {
4537: foreach my $domkey (@domains) {
4538: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4539: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4540: return 'ok';
4541: }
4542: }
4543: }
4544: }
4545: if (@users > 0) {
4546: foreach my $userkey (@users) {
4547: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4548: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4549: if (ref($item) eq 'HASH') {
4550: if (($item->{'uname'} eq $env{'user.name'}) &&
4551: ($item->{'udom'} eq $env{'user.domain'})) {
4552: return 'ok';
4553: }
4554: }
4555: }
4556: }
4557: }
4558: }
4559: my %roleshash;
4560: my @courses_and_groups = @courses;
4561: push(@courses_and_groups,@groups);
4562: if (@courses_and_groups > 0) {
4563: my (%allgroups,%allroles);
4564: my ($start,$end,$role,$sec,$group);
4565: foreach my $envkey (%env) {
4566: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4567: my $cid = $2.'_'.$3;
4568: if ($1 eq 'gr') {
4569: $group = $4;
4570: $allgroups{$cid}{$group} = $env{$envkey};
4571: } else {
4572: if ($4 eq '') {
4573: $sec = 'none';
4574: } else {
4575: $sec = $4;
4576: }
4577: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4578: }
4579: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4580: my $cid = $2.'_'.$3;
4581: if ($4 eq '') {
4582: $sec = 'none';
4583: } else {
4584: $sec = $4;
4585: }
4586: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4587: }
4588: }
4589: if (keys(%allroles) == 0) {
4590: return;
4591: }
4592: foreach my $key (@courses_and_groups) {
4593: my %content = %{$$access_hash{$key}};
4594: my $cnum = $content{'number'};
4595: my $cdom = $content{'domain'};
4596: my $cid = $cdom.'_'.$cnum;
4597: if (!exists($allroles{$cid})) {
4598: next;
4599: }
4600: foreach my $role_id (keys(%{$content{'roles'}})) {
4601: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4602: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4603: my @status = @{$content{'roles'}{$role_id}{'access'}};
4604: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4605: foreach my $role (keys(%{$allroles{$cid}})) {
4606: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4607: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4608: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4609: if (grep/^all$/,@sections) {
4610: return 'ok';
4611: } else {
4612: if (grep/^$sec$/,@sections) {
4613: return 'ok';
4614: }
4615: }
4616: }
4617: }
4618: if (keys(%{$allgroups{$cid}}) == 0) {
4619: if (grep/^none$/,@groups) {
4620: return 'ok';
4621: }
4622: } else {
4623: if (grep/^all$/,@groups) {
4624: return 'ok';
4625: }
4626: foreach my $group (keys(%{$allgroups{$cid}})) {
4627: if (grep/^$group$/,@groups) {
4628: return 'ok';
4629: }
4630: }
4631: }
4632: }
4633: }
4634: }
4635: }
4636: }
4637: if ($guest) {
4638: return $guest;
4639: }
4640: }
4641: }
4642: return;
4643: }
4644:
4645: sub course_group_datechecker {
4646: my ($dates,$now,$status) = @_;
4647: my ($start,$end) = split(/\./,$dates);
4648: if (!$start && !$end) {
4649: return 'ok';
4650: }
4651: if (grep/^active$/,@{$status}) {
4652: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4653: return 'ok';
4654: }
4655: }
4656: if (grep/^previous$/,@{$status}) {
4657: if ($end > $now ) {
4658: return 'ok';
4659: }
4660: }
4661: if (grep/^future$/,@{$status}) {
4662: if ($start > $now) {
4663: return 'ok';
4664: }
4665: }
4666: return;
4667: }
4668:
4669: sub parse_portfolio_url {
4670: my ($url) = @_;
4671:
4672: my ($type,$udom,$unum,$group,$file_name);
4673:
4674: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4675: $type = 1;
4676: $udom = $1;
4677: $unum = $2;
4678: $file_name = $3;
4679: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4680: $type = 2;
4681: $udom = $1;
4682: $unum = $2;
4683: $group = $3;
4684: $file_name = $3.'/'.$4;
4685: }
4686: if (wantarray) {
4687: return ($type,$udom,$unum,$file_name,$group);
4688: }
4689: return $type;
4690: }
4691:
4692: sub is_portfolio_url {
4693: my ($url) = @_;
4694: return scalar(&parse_portfolio_url($url));
4695: }
4696:
4697: sub is_portfolio_file {
4698: my ($file) = @_;
4699: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4700: return 1;
4701: }
4702: return;
4703: }
4704:
4705: sub usertools_access {
4706: my ($uname,$udom,$tool,$action,$context) = @_;
4707: my ($access,%tools);
4708: if ($context eq '') {
4709: $context = 'tools';
4710: }
4711: if ($context eq 'requestcourses') {
4712: %tools = (
4713: official => 1,
4714: unofficial => 1,
4715: community => 1,
4716: );
4717: } else {
4718: %tools = (
4719: aboutme => 1,
4720: blog => 1,
4721: portfolio => 1,
4722: );
4723: }
4724: return if (!defined($tools{$tool}));
4725:
4726: if ((!defined($udom)) || (!defined($uname))) {
4727: $udom = $env{'user.domain'};
4728: $uname = $env{'user.name'};
4729: }
4730:
4731: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4732: if ($action ne 'reload') {
4733: if ($context eq 'requestcourses') {
4734: return $env{'environment.canrequest.'.$tool};
4735: } else {
4736: return $env{'environment.availabletools.'.$tool};
4737: }
4738: }
4739: }
4740:
4741: my ($toolstatus,$inststatus);
4742:
4743: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4744: ($action ne 'reload')) {
4745: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4746: $inststatus = $env{'environment.inststatus'};
4747: } else {
4748: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
4749: $toolstatus = $userenv{$context.'.'.$tool};
4750: $inststatus = $userenv{'inststatus'};
4751: }
4752:
4753: if ($toolstatus ne '') {
4754: if ($toolstatus) {
4755: $access = 1;
4756: } else {
4757: $access = 0;
4758: }
4759: return $access;
4760: }
4761:
4762: my $is_adv = &is_advanced_user($udom,$uname);
4763: my %domdef = &get_domain_defaults($udom);
4764: if (ref($domdef{$tool}) eq 'HASH') {
4765: if ($is_adv) {
4766: if ($domdef{$tool}{'_LC_adv'} ne '') {
4767: if ($domdef{$tool}{'_LC_adv'}) {
4768: $access = 1;
4769: } else {
4770: $access = 0;
4771: }
4772: return $access;
4773: }
4774: }
4775: if ($inststatus ne '') {
4776: my ($hasaccess,$hasnoaccess);
4777: foreach my $affiliation (split(/:/,$inststatus)) {
4778: if ($domdef{$tool}{$affiliation} ne '') {
4779: if ($domdef{$tool}{$affiliation}) {
4780: $hasaccess = 1;
4781: } else {
4782: $hasnoaccess = 1;
4783: }
4784: }
4785: }
4786: if ($hasaccess || $hasnoaccess) {
4787: if ($hasaccess) {
4788: $access = 1;
4789: } elsif ($hasnoaccess) {
4790: $access = 0;
4791: }
4792: return $access;
4793: }
4794: } else {
4795: if ($domdef{$tool}{'default'} ne '') {
4796: if ($domdef{$tool}{'default'}) {
4797: $access = 1;
4798: } elsif ($domdef{$tool}{'default'} == 0) {
4799: $access = 0;
4800: }
4801: return $access;
4802: }
4803: }
4804: } else {
4805: if ($context eq 'tools') {
4806: $access = 1;
4807: } else {
4808: $access = 0;
4809: }
4810: return $access;
4811: }
4812: }
4813:
4814: sub is_advanced_user {
4815: my ($udom,$uname) = @_;
4816: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
4817: my %allroles;
4818: my $is_adv;
4819: foreach my $role (keys(%roleshash)) {
4820: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
4821: my $area = '/'.$tdomain.'/'.$trest;
4822: if ($sec ne '') {
4823: $area .= '/'.$sec;
4824: }
4825: if (($area ne '') && ($trole ne '')) {
4826: my $spec=$trole.'.'.$area;
4827: if ($trole =~ /^cr\//) {
4828: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4829: } elsif ($trole ne 'gr') {
4830: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4831: }
4832: }
4833: }
4834: foreach my $role (keys(%allroles)) {
4835: last if ($is_adv);
4836: foreach my $item (split(/:/,$allroles{$role})) {
4837: if ($item ne '') {
4838: my ($privilege,$restrictions)=split(/&/,$item);
4839: if ($privilege eq 'adv') {
4840: $is_adv = 1;
4841: last;
4842: }
4843: }
4844: }
4845: }
4846: return $is_adv;
4847: }
4848:
4849: sub check_can_request {
4850: my ($dom,$can_request,$request_domains) = @_;
4851: my $canreq = 0;
4852: my ($types,$typename) = &Apache::loncommon::course_types();
4853: my @options = ('approval','validate','autolimit');
4854: my $optregex = join('|',@options);
4855: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
4856: foreach my $type (@{$types}) {
4857: if (&usertools_access($env{'user.name'},
4858: $env{'user.domain'},
4859: $type,undef,'requestcourses')) {
4860: $canreq ++;
4861: if (ref($request_domains) eq 'HASH') {
4862: push(@{$request_domains->{$type}},$env{'user.domain'});
4863: }
4864: if ($dom eq $env{'user.domain'}) {
4865: $can_request->{$type} = 1;
4866: }
4867: }
4868: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
4869: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
4870: if (@curr > 0) {
4871: foreach my $item (@curr) {
4872: if (ref($request_domains) eq 'HASH') {
4873: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
4874: if ($otherdom ne '') {
4875: if (ref($request_domains->{$type}) eq 'ARRAY') {
4876: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
4877: push(@{$request_domains->{$type}},$otherdom);
4878: }
4879: } else {
4880: push(@{$request_domains->{$type}},$otherdom);
4881: }
4882: }
4883: }
4884: }
4885: unless($dom eq $env{'user.domain'}) {
4886: $canreq ++;
4887: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
4888: $can_request->{$type} = 1;
4889: }
4890: }
4891: }
4892: }
4893: }
4894: }
4895: return $canreq;
4896: }
4897:
4898: # ---------------------------------------------- Custom access rule evaluation
4899:
4900: sub customaccess {
4901: my ($priv,$uri)=@_;
4902: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4903: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4904: $udom = &LONCAPA::clean_domain($udom);
4905: $ucrs = &LONCAPA::clean_username($ucrs);
4906: my $access=0;
4907: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4908: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4909: if ($type eq 'user') {
4910: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4911: my ($tdom,$tuname)=split(m{/},$scope);
4912: if ($tdom) {
4913: if ($tdom ne $env{'user.domain'}) { next; }
4914: }
4915: if ($tuname) {
4916: if ($tuname ne $env{'user.name'}) { next; }
4917: }
4918: $access=($effect eq 'allow');
4919: last;
4920: }
4921: } else {
4922: if ($role) {
4923: if ($role ne $urole) { next; }
4924: }
4925: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4926: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4927: if ($tdom) {
4928: if ($tdom ne $udom) { next; }
4929: }
4930: if ($tcrs) {
4931: if ($tcrs ne $ucrs) { next; }
4932: }
4933: if ($tsec) {
4934: if ($tsec ne $usec) { next; }
4935: }
4936: $access=($effect eq 'allow');
4937: last;
4938: }
4939: if ($realm eq '' && $role eq '') {
4940: $access=($effect eq 'allow');
4941: }
4942: }
4943: }
4944: return $access;
4945: }
4946:
4947: # ------------------------------------------------- Check for a user privilege
4948:
4949: sub allowed {
4950: my ($priv,$uri,$symb,$role)=@_;
4951: my $ver_orguri=$uri;
4952: $uri=&deversion($uri);
4953: my $orguri=$uri;
4954: $uri=&declutter($uri);
4955:
4956: if ($priv eq 'evb') {
4957: # Evade communication block restrictions for specified role in a course
4958: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4959: return $1;
4960: } else {
4961: return;
4962: }
4963: }
4964:
4965: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4966: # Free bre access to adm and meta resources
4967: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4968: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4969: && ($priv eq 'bre')) {
4970: return 'F';
4971: }
4972:
4973: # Free bre access to user's own portfolio contents
4974: my ($space,$domain,$name,@dir)=split('/',$uri);
4975: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4976: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4977: my %setters;
4978: my ($startblock,$endblock) =
4979: &Apache::loncommon::blockcheck(\%setters,'port');
4980: if ($startblock && $endblock) {
4981: return 'B';
4982: } else {
4983: return 'F';
4984: }
4985: }
4986:
4987: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4988: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4989: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4990: if (exists($env{'request.course.id'})) {
4991: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4992: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4993: if (($domain eq $cdom) && ($name eq $cnum)) {
4994: my $courseprivid=$env{'request.course.id'};
4995: $courseprivid=~s/\_/\//;
4996: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4997: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4998: return $1;
4999: } else {
5000: if ($env{'request.course.sec'}) {
5001: $courseprivid.='/'.$env{'request.course.sec'};
5002: }
5003: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5004: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5005: return $2;
5006: }
5007: }
5008: }
5009: }
5010: }
5011:
5012: # Free bre to public access
5013:
5014: if ($priv eq 'bre') {
5015: my $copyright=&metadata($uri,'copyright');
5016: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5017: return 'F';
5018: }
5019: if ($copyright eq 'priv') {
5020: $uri=~/([^\/]+)\/([^\/]+)\//;
5021: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5022: return '';
5023: }
5024: }
5025: if ($copyright eq 'domain') {
5026: $uri=~/([^\/]+)\/([^\/]+)\//;
5027: unless (($env{'user.domain'} eq $1) ||
5028: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5029: return '';
5030: }
5031: }
5032: if ($env{'request.role'}=~ /li\.\//) {
5033: # Library role, so allow browsing of resources in this domain.
5034: return 'F';
5035: }
5036: if ($copyright eq 'custom') {
5037: unless (&customaccess($priv,$uri)) { return ''; }
5038: }
5039: }
5040: # Domain coordinator is trying to create a course
5041: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5042: # uri is the requested domain in this case.
5043: # comparison to 'request.role.domain' shows if the user has selected
5044: # a role of dc for the domain in question.
5045: return 'F' if ($uri eq $env{'request.role.domain'});
5046: }
5047:
5048: my $thisallowed='';
5049: my $statecond=0;
5050: my $courseprivid='';
5051:
5052: my $ownaccess;
5053: # Community Coordinator or Assistant Co-author browsing resource space.
5054: if (($priv eq 'bro') && ($env{'user.author'})) {
5055: if ($uri eq '') {
5056: $ownaccess = 1;
5057: } else {
5058: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5059: my $udom = $env{'user.domain'};
5060: my $uname = $env{'user.name'};
5061: if ($uri =~ m{^\Q$udom\E/?$}) {
5062: $ownaccess = 1;
5063: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5064: unless ($uri =~ m{\.\./}) {
5065: $ownaccess = 1;
5066: }
5067: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5068: my $now = time;
5069: if ($uri =~ m{^([^/]+)/?$}) {
5070: my $adom = $1;
5071: foreach my $key (keys(%env)) {
5072: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5073: my ($start,$end) = split('.',$env{$key});
5074: if (($now >= $start) && (!$end || $end < $now)) {
5075: $ownaccess = 1;
5076: last;
5077: }
5078: }
5079: }
5080: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5081: my $adom = $1;
5082: my $aname = $2;
5083: foreach my $role ('ca','aa') {
5084: if ($env{"user.role.$role./$adom/$aname"}) {
5085: my ($start,$end) =
5086: split('.',$env{"user.role.$role./$adom/$aname"});
5087: if (($now >= $start) && (!$end || $end < $now)) {
5088: $ownaccess = 1;
5089: last;
5090: }
5091: }
5092: }
5093: }
5094: }
5095: }
5096: }
5097: }
5098:
5099: # Course
5100:
5101: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5102: unless (($priv eq 'bro') && (!$ownaccess)) {
5103: $thisallowed.=$1;
5104: }
5105: }
5106:
5107: # Domain
5108:
5109: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5110: =~/\Q$priv\E\&([^\:]*)/) {
5111: unless (($priv eq 'bro') && (!$ownaccess)) {
5112: $thisallowed.=$1;
5113: }
5114: }
5115:
5116: # Course: uri itself is a course
5117: my $courseuri=$uri;
5118: $courseuri=~s/\_(\d)/\/$1/;
5119: $courseuri=~s/^([^\/])/\/$1/;
5120:
5121: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5122: =~/\Q$priv\E\&([^\:]*)/) {
5123: unless (($priv eq 'bro') && (!$ownaccess)) {
5124: $thisallowed.=$1;
5125: }
5126: }
5127:
5128: # URI is an uploaded document for this course, default permissions don't matter
5129: # not allowing 'edit' access (editupload) to uploaded course docs
5130: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5131: $thisallowed='';
5132: my ($match)=&is_on_map($uri);
5133: if ($match) {
5134: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5135: =~/\Q$priv\E\&([^\:]*)/) {
5136: $thisallowed.=$1;
5137: }
5138: } else {
5139: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5140: if ($refuri) {
5141: if ($refuri =~ m|^/adm/|) {
5142: $thisallowed='F';
5143: } else {
5144: $refuri=&declutter($refuri);
5145: my ($match) = &is_on_map($refuri);
5146: if ($match) {
5147: $thisallowed='F';
5148: }
5149: }
5150: }
5151: }
5152: }
5153:
5154: if ($priv eq 'bre'
5155: && $thisallowed ne 'F'
5156: && $thisallowed ne '2'
5157: && &is_portfolio_url($uri)) {
5158: $thisallowed = &portfolio_access($uri);
5159: }
5160:
5161: # Full access at system, domain or course-wide level? Exit.
5162: if ($thisallowed=~/F/) {
5163: return 'F';
5164: }
5165:
5166: # If this is generating or modifying users, exit with special codes
5167:
5168: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5169: if (($priv eq 'cca') || ($priv eq 'caa')) {
5170: my ($audom,$auname)=split('/',$uri);
5171: # no author name given, so this just checks on the general right to make a co-author in this domain
5172: unless ($auname) { return $thisallowed; }
5173: # an author name is given, so we are about to actually make a co-author for a certain account
5174: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5175: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5176: ($audom ne $env{'request.role.domain'}))) { return ''; }
5177: }
5178: return $thisallowed;
5179: }
5180: #
5181: # Gathered so far: system, domain and course wide privileges
5182: #
5183: # Course: See if uri or referer is an individual resource that is part of
5184: # the course
5185:
5186: if ($env{'request.course.id'}) {
5187:
5188: $courseprivid=$env{'request.course.id'};
5189: if ($env{'request.course.sec'}) {
5190: $courseprivid.='/'.$env{'request.course.sec'};
5191: }
5192: $courseprivid=~s/\_/\//;
5193: my $checkreferer=1;
5194: my ($match,$cond)=&is_on_map($uri);
5195: if ($match) {
5196: $statecond=$cond;
5197: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5198: =~/\Q$priv\E\&([^\:]*)/) {
5199: $thisallowed.=$1;
5200: $checkreferer=0;
5201: }
5202: }
5203:
5204: if ($checkreferer) {
5205: my $refuri=$env{'httpref.'.$orguri};
5206: unless ($refuri) {
5207: foreach my $key (keys(%env)) {
5208: if ($key=~/^httpref\..*\*/) {
5209: my $pattern=$key;
5210: $pattern=~s/^httpref\.\/res\///;
5211: $pattern=~s/\*/\[\^\/\]\+/g;
5212: $pattern=~s/\//\\\//g;
5213: if ($orguri=~/$pattern/) {
5214: $refuri=$env{$key};
5215: }
5216: }
5217: }
5218: }
5219:
5220: if ($refuri) {
5221: $refuri=&declutter($refuri);
5222: my ($match,$cond)=&is_on_map($refuri);
5223: if ($match) {
5224: my $refstatecond=$cond;
5225: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5226: =~/\Q$priv\E\&([^\:]*)/) {
5227: $thisallowed.=$1;
5228: $uri=$refuri;
5229: $statecond=$refstatecond;
5230: }
5231: }
5232: }
5233: }
5234: }
5235:
5236: #
5237: # Gathered now: all privileges that could apply, and condition number
5238: #
5239: #
5240: # Full or no access?
5241: #
5242:
5243: if ($thisallowed=~/F/) {
5244: return 'F';
5245: }
5246:
5247: unless ($thisallowed) {
5248: return '';
5249: }
5250:
5251: # Restrictions exist, deal with them
5252: #
5253: # C:according to course preferences
5254: # R:according to resource settings
5255: # L:unless locked
5256: # X:according to user session state
5257: #
5258:
5259: # Possibly locked functionality, check all courses
5260: # Locks might take effect only after 10 minutes cache expiration for other
5261: # courses, and 2 minutes for current course
5262:
5263: my $envkey;
5264: if ($thisallowed=~/L/) {
5265: foreach $envkey (keys(%env)) {
5266: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5267: my $courseid=$2;
5268: my $roleid=$1.'.'.$2;
5269: $courseid=~s/^\///;
5270: my $expiretime=600;
5271: if ($env{'request.role'} eq $roleid) {
5272: $expiretime=120;
5273: }
5274: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5275: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5276: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5277: &coursedescription($courseid,{'freshen_cache' => 1});
5278: }
5279: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5280: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5281: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5282: &log($env{'user.domain'},$env{'user.name'},
5283: $env{'user.home'},
5284: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5285: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5286: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5287: return '';
5288: }
5289: }
5290: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5291: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5292: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5293: &log($env{'user.domain'},$env{'user.name'},
5294: $env{'user.home'},
5295: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5296: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5297: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5298: return '';
5299: }
5300: }
5301: }
5302: }
5303: }
5304:
5305: #
5306: # Rest of the restrictions depend on selected course
5307: #
5308:
5309: unless ($env{'request.course.id'}) {
5310: if ($thisallowed eq 'A') {
5311: return 'A';
5312: } elsif ($thisallowed eq 'B') {
5313: return 'B';
5314: } else {
5315: return '1';
5316: }
5317: }
5318:
5319: #
5320: # Now user is definitely in a course
5321: #
5322:
5323:
5324: # Course preferences
5325:
5326: if ($thisallowed=~/C/) {
5327: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5328: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5329: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5330: =~/\Q$rolecode\E/) {
5331: if ($priv ne 'pch') {
5332: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5333: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5334: $env{'request.course.id'});
5335: }
5336: return '';
5337: }
5338:
5339: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5340: =~/\Q$unamedom\E/) {
5341: if ($priv ne 'pch') {
5342: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5343: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5344: $env{'request.course.id'});
5345: }
5346: return '';
5347: }
5348: }
5349:
5350: # Resource preferences
5351:
5352: if ($thisallowed=~/R/) {
5353: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5354: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5355: if ($priv ne 'pch') {
5356: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5357: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5358: }
5359: return '';
5360: }
5361: }
5362:
5363: # Restricted by state or randomout?
5364:
5365: if ($thisallowed=~/X/) {
5366: if ($env{'acc.randomout'}) {
5367: if (!$symb) { $symb=&symbread($uri,1); }
5368: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5369: return '';
5370: }
5371: }
5372: if (&condval($statecond)) {
5373: return '2';
5374: } else {
5375: return '';
5376: }
5377: }
5378:
5379: if ($thisallowed eq 'A') {
5380: return 'A';
5381: } elsif ($thisallowed eq 'B') {
5382: return 'B';
5383: }
5384: return 'F';
5385: }
5386:
5387: sub split_uri_for_cond {
5388: my $uri=&deversion(&declutter(shift));
5389: my @uriparts=split(/\//,$uri);
5390: my $filename=pop(@uriparts);
5391: my $pathname=join('/',@uriparts);
5392: return ($pathname,$filename);
5393: }
5394: # --------------------------------------------------- Is a resource on the map?
5395:
5396: sub is_on_map {
5397: my ($pathname,$filename) = &split_uri_for_cond(shift);
5398: #Trying to find the conditional for the file
5399: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5400: /\&\Q$filename\E\:([\d\|]+)\&/);
5401: if ($match) {
5402: return (1,$1);
5403: } else {
5404: return (0,0);
5405: }
5406: }
5407:
5408: # --------------------------------------------------------- Get symb from alias
5409:
5410: sub get_symb_from_alias {
5411: my $symb=shift;
5412: my ($map,$resid,$url)=&decode_symb($symb);
5413: # Already is a symb
5414: if ($url) { return $symb; }
5415: # Must be an alias
5416: my $aliassymb='';
5417: my %bighash;
5418: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5419: &GDBM_READER(),0640)) {
5420: my $rid=$bighash{'mapalias_'.$symb};
5421: if ($rid) {
5422: my ($mapid,$resid)=split(/\./,$rid);
5423: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5424: $resid,$bighash{'src_'.$rid});
5425: }
5426: untie %bighash;
5427: }
5428: return $aliassymb;
5429: }
5430:
5431: # ----------------------------------------------------------------- Define Role
5432:
5433: sub definerole {
5434: if (allowed('mcr','/')) {
5435: my ($rolename,$sysrole,$domrole,$courole)=@_;
5436: foreach my $role (split(':',$sysrole)) {
5437: my ($crole,$cqual)=split(/\&/,$role);
5438: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5439: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5440: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5441: return "refused:s:$crole&$cqual";
5442: }
5443: }
5444: }
5445: foreach my $role (split(':',$domrole)) {
5446: my ($crole,$cqual)=split(/\&/,$role);
5447: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5448: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5449: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5450: return "refused:d:$crole&$cqual";
5451: }
5452: }
5453: }
5454: foreach my $role (split(':',$courole)) {
5455: my ($crole,$cqual)=split(/\&/,$role);
5456: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5457: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5458: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5459: return "refused:c:$crole&$cqual";
5460: }
5461: }
5462: }
5463: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5464: "$env{'user.domain'}:$env{'user.name'}:".
5465: "rolesdef_$rolename=".
5466: escape($sysrole.'_'.$domrole.'_'.$courole);
5467: return reply($command,$env{'user.home'});
5468: } else {
5469: return 'refused';
5470: }
5471: }
5472:
5473: # ---------------- Make a metadata query against the network of library servers
5474:
5475: sub metadata_query {
5476: my ($query,$custom,$customshow,$server_array)=@_;
5477: my %rhash;
5478: my %libserv = &all_library();
5479: my @server_list = (defined($server_array) ? @$server_array
5480: : keys(%libserv) );
5481: for my $server (@server_list) {
5482: unless ($custom or $customshow) {
5483: my $reply=&reply("querysend:".&escape($query),$server);
5484: $rhash{$server}=$reply;
5485: }
5486: else {
5487: my $reply=&reply("querysend:".&escape($query).':'.
5488: &escape($custom).':'.&escape($customshow),
5489: $server);
5490: $rhash{$server}=$reply;
5491: }
5492: }
5493: return \%rhash;
5494: }
5495:
5496: # ----------------------------------------- Send log queries and wait for reply
5497:
5498: sub log_query {
5499: my ($uname,$udom,$query,%filters)=@_;
5500: my $uhome=&homeserver($uname,$udom);
5501: if ($uhome eq 'no_host') { return 'error: no_host'; }
5502: my $uhost=&hostname($uhome);
5503: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5504: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5505: $uhome);
5506: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5507: return get_query_reply($queryid);
5508: }
5509:
5510: # -------------------------- Update MySQL table for portfolio file
5511:
5512: sub update_portfolio_table {
5513: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5514: if ($group ne '') {
5515: $file_name =~s /^\Q$group\E//;
5516: }
5517: my $homeserver = &homeserver($uname,$udom);
5518: my $queryid=
5519: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5520: ':'.&escape($file_name).':'.$action,$homeserver);
5521: my $reply = &get_query_reply($queryid);
5522: return $reply;
5523: }
5524:
5525: # -------------------------- Update MySQL allusers table
5526:
5527: sub update_allusers_table {
5528: my ($uname,$udom,$names) = @_;
5529: my $homeserver = &homeserver($uname,$udom);
5530: my $queryid=
5531: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5532: 'lastname='.&escape($names->{'lastname'}).'%%'.
5533: 'firstname='.&escape($names->{'firstname'}).'%%'.
5534: 'middlename='.&escape($names->{'middlename'}).'%%'.
5535: 'generation='.&escape($names->{'generation'}).'%%'.
5536: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5537: 'id='.&escape($names->{'id'}),$homeserver);
5538: my $reply = &get_query_reply($queryid);
5539: return $reply;
5540: }
5541:
5542: # ------- Request retrieval of institutional classlists for course(s)
5543:
5544: sub fetch_enrollment_query {
5545: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5546: my $homeserver;
5547: my $maxtries = 1;
5548: if ($context eq 'automated') {
5549: $homeserver = $perlvar{'lonHostID'};
5550: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5551: } else {
5552: $homeserver = &homeserver($cnum,$dom);
5553: }
5554: my $host=&hostname($homeserver);
5555: my $cmd = '';
5556: foreach my $affiliate (keys(%{$affiliatesref})) {
5557: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5558: }
5559: $cmd =~ s/%%$//;
5560: $cmd = &escape($cmd);
5561: my $query = 'fetchenrollment';
5562: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5563: unless ($queryid=~/^\Q$host\E\_/) {
5564: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5565: return 'error: '.$queryid;
5566: }
5567: my $reply = &get_query_reply($queryid);
5568: my $tries = 1;
5569: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5570: $reply = &get_query_reply($queryid);
5571: $tries ++;
5572: }
5573: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5574: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5575: } else {
5576: my @responses = split(/:/,$reply);
5577: if ($homeserver eq $perlvar{'lonHostID'}) {
5578: foreach my $line (@responses) {
5579: my ($key,$value) = split(/=/,$line,2);
5580: $$replyref{$key} = $value;
5581: }
5582: } else {
5583: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5584: foreach my $line (@responses) {
5585: my ($key,$value) = split(/=/,$line);
5586: $$replyref{$key} = $value;
5587: if ($value > 0) {
5588: foreach my $item (@{$$affiliatesref{$key}}) {
5589: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5590: my $destname = $pathname.'/'.$filename;
5591: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5592: if ($xml_classlist =~ /^error/) {
5593: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5594: } else {
5595: if ( open(FILE,">$destname") ) {
5596: print FILE &unescape($xml_classlist);
5597: close(FILE);
5598: } else {
5599: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5600: }
5601: }
5602: }
5603: }
5604: }
5605: }
5606: return 'ok';
5607: }
5608: return 'error';
5609: }
5610:
5611: sub get_query_reply {
5612: my $queryid=shift;
5613: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5614: my $reply='';
5615: for (1..100) {
5616: sleep 2;
5617: if (-e $replyfile.'.end') {
5618: if (open(my $fh,$replyfile)) {
5619: $reply = join('',<$fh>);
5620: close($fh);
5621: } else { return 'error: reply_file_error'; }
5622: return &unescape($reply);
5623: }
5624: }
5625: return 'timeout:'.$queryid;
5626: }
5627:
5628: sub courselog_query {
5629: #
5630: # possible filters:
5631: # url: url or symb
5632: # username
5633: # domain
5634: # action: view, submit, grade
5635: # start: timestamp
5636: # end: timestamp
5637: #
5638: my (%filters)=@_;
5639: unless ($env{'request.course.id'}) { return 'no_course'; }
5640: if ($filters{'url'}) {
5641: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5642: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5643: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5644: }
5645: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5646: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5647: return &log_query($cname,$cdom,'courselog',%filters);
5648: }
5649:
5650: sub userlog_query {
5651: #
5652: # possible filters:
5653: # action: log check role
5654: # start: timestamp
5655: # end: timestamp
5656: #
5657: my ($uname,$udom,%filters)=@_;
5658: return &log_query($uname,$udom,'userlog',%filters);
5659: }
5660:
5661: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5662:
5663: sub auto_run {
5664: my ($cnum,$cdom) = @_;
5665: my $response = 0;
5666: my $settings;
5667: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5668: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5669: $settings = $domconfig{'autoenroll'};
5670: if ($settings->{'run'} eq '1') {
5671: $response = 1;
5672: }
5673: } else {
5674: my $homeserver;
5675: if (&is_course($cdom,$cnum)) {
5676: $homeserver = &homeserver($cnum,$cdom);
5677: } else {
5678: $homeserver = &domain($cdom,'primary');
5679: }
5680: if ($homeserver ne 'no_host') {
5681: $response = &reply('autorun:'.$cdom,$homeserver);
5682: }
5683: }
5684: return $response;
5685: }
5686:
5687: sub auto_get_sections {
5688: my ($cnum,$cdom,$inst_coursecode) = @_;
5689: my $homeserver;
5690: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5691: $homeserver = &homeserver($cnum,$cdom);
5692: }
5693: if (!defined($homeserver)) {
5694: if ($cdom =~ /^$match_domain$/) {
5695: $homeserver = &domain($cdom,'primary');
5696: }
5697: }
5698: my @secs;
5699: if (defined($homeserver)) {
5700: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5701: unless ($response eq 'refused') {
5702: @secs = split(/:/,$response);
5703: }
5704: }
5705: return @secs;
5706: }
5707:
5708: sub auto_new_course {
5709: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5710: my $homeserver = &homeserver($cnum,$cdom);
5711: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5712: return $response;
5713: }
5714:
5715: sub auto_validate_courseID {
5716: my ($cnum,$cdom,$inst_course_id) = @_;
5717: my $homeserver = &homeserver($cnum,$cdom);
5718: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5719: return $response;
5720: }
5721:
5722: sub auto_validate_instcode {
5723: my ($cnum,$cdom,$instcode,$owner) = @_;
5724: my ($homeserver,$response);
5725: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5726: $homeserver = &homeserver($cnum,$cdom);
5727: }
5728: if (!defined($homeserver)) {
5729: if ($cdom =~ /^$match_domain$/) {
5730: $homeserver = &domain($cdom,'primary');
5731: }
5732: }
5733: my $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
5734: &escape($instcode).':'.&escape($owner),$homeserver));
5735: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
5736: return ($outcome,$description);
5737: }
5738:
5739: sub auto_create_password {
5740: my ($cnum,$cdom,$authparam,$udom) = @_;
5741: my ($homeserver,$response);
5742: my $create_passwd = 0;
5743: my $authchk = '';
5744: if ($udom =~ /^$match_domain$/) {
5745: $homeserver = &domain($udom,'primary');
5746: }
5747: if ($homeserver eq '') {
5748: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5749: $homeserver = &homeserver($cnum,$cdom);
5750: }
5751: }
5752: if ($homeserver eq '') {
5753: $authchk = 'nodomain';
5754: } else {
5755: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5756: if ($response eq 'refused') {
5757: $authchk = 'refused';
5758: } else {
5759: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5760: }
5761: }
5762: return ($authparam,$create_passwd,$authchk);
5763: }
5764:
5765: sub auto_photo_permission {
5766: my ($cnum,$cdom,$students) = @_;
5767: my $homeserver = &homeserver($cnum,$cdom);
5768: my ($outcome,$perm_reqd,$conditions) =
5769: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5770: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5771: return (undef,undef);
5772: }
5773: return ($outcome,$perm_reqd,$conditions);
5774: }
5775:
5776: sub auto_checkphotos {
5777: my ($uname,$udom,$pid) = @_;
5778: my $homeserver = &homeserver($uname,$udom);
5779: my ($result,$resulttype);
5780: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5781: &escape($uname).':'.&escape($pid),
5782: $homeserver));
5783: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5784: return (undef,undef);
5785: }
5786: if ($outcome) {
5787: ($result,$resulttype) = split(/:/,$outcome);
5788: }
5789: return ($result,$resulttype);
5790: }
5791:
5792: sub auto_photochoice {
5793: my ($cnum,$cdom) = @_;
5794: my $homeserver = &homeserver($cnum,$cdom);
5795: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5796: &escape($cdom),
5797: $homeserver)));
5798: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5799: return (undef,undef);
5800: }
5801: return ($update,$comment);
5802: }
5803:
5804: sub auto_photoupdate {
5805: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5806: my $homeserver = &homeserver($cnum,$dom);
5807: my $host=&hostname($homeserver);
5808: my $cmd = '';
5809: my $maxtries = 1;
5810: foreach my $affiliate (keys(%{$affiliatesref})) {
5811: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5812: }
5813: $cmd =~ s/%%$//;
5814: $cmd = &escape($cmd);
5815: my $query = 'institutionalphotos';
5816: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5817: unless ($queryid=~/^\Q$host\E\_/) {
5818: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5819: return 'error: '.$queryid;
5820: }
5821: my $reply = &get_query_reply($queryid);
5822: my $tries = 1;
5823: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5824: $reply = &get_query_reply($queryid);
5825: $tries ++;
5826: }
5827: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5828: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5829: } else {
5830: my @responses = split(/:/,$reply);
5831: my $outcome = shift(@responses);
5832: foreach my $item (@responses) {
5833: my ($key,$value) = split(/=/,$item);
5834: $$photo{$key} = $value;
5835: }
5836: return $outcome;
5837: }
5838: return 'error';
5839: }
5840:
5841: sub auto_instcode_format {
5842: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5843: $cat_order) = @_;
5844: my $courses = '';
5845: my @homeservers;
5846: if ($caller eq 'global') {
5847: my %servers = &get_servers($codedom,'library');
5848: foreach my $tryserver (keys(%servers)) {
5849: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5850: push(@homeservers,$tryserver);
5851: }
5852: }
5853: } elsif ($caller eq 'requests') {
5854: if ($codedom =~ /^$match_domain$/) {
5855: my $chome = &domain($codedom,'primary');
5856: unless ($chome eq 'no_host') {
5857: push(@homeservers,$chome);
5858: }
5859: }
5860: } else {
5861: push(@homeservers,&homeserver($caller,$codedom));
5862: }
5863: foreach my $code (keys(%{$instcodes})) {
5864: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5865: }
5866: chop($courses);
5867: my $ok_response = 0;
5868: my $response;
5869: while (@homeservers > 0 && $ok_response == 0) {
5870: my $server = shift(@homeservers);
5871: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5872: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5873: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5874: split(/:/,$response);
5875: %{$codes} = (%{$codes},&str2hash($codes_str));
5876: push(@{$codetitles},&str2array($codetitles_str));
5877: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5878: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5879: $ok_response = 1;
5880: }
5881: }
5882: if ($ok_response) {
5883: return 'ok';
5884: } else {
5885: return $response;
5886: }
5887: }
5888:
5889: sub auto_instcode_defaults {
5890: my ($domain,$returnhash,$code_order) = @_;
5891: my @homeservers;
5892:
5893: my %servers = &get_servers($domain,'library');
5894: foreach my $tryserver (keys(%servers)) {
5895: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5896: push(@homeservers,$tryserver);
5897: }
5898: }
5899:
5900: my $response;
5901: foreach my $server (@homeservers) {
5902: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5903: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5904:
5905: foreach my $pair (split(/\&/,$response)) {
5906: my ($name,$value)=split(/\=/,$pair);
5907: if ($name eq 'code_order') {
5908: @{$code_order} = split(/\&/,&unescape($value));
5909: } else {
5910: $returnhash->{&unescape($name)}=&unescape($value);
5911: }
5912: }
5913: return 'ok';
5914: }
5915:
5916: return $response;
5917: }
5918:
5919: sub auto_possible_instcodes {
5920: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
5921: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
5922: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
5923: return;
5924: }
5925: my (@homeservers,$uhome);
5926: if (defined(&domain($domain,'primary'))) {
5927: $uhome=&domain($domain,'primary');
5928: push(@homeservers,&domain($domain,'primary'));
5929: } else {
5930: my %servers = &get_servers($domain,'library');
5931: foreach my $tryserver (keys(%servers)) {
5932: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5933: push(@homeservers,$tryserver);
5934: }
5935: }
5936: }
5937: my $response;
5938: foreach my $server (@homeservers) {
5939: $response=&reply('autopossibleinstcodes:'.$domain,$server);
5940: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5941: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
5942: split(':',$response);
5943: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
5944: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
5945: foreach my $item (split('&',$cat_title)) {
5946: my ($name,$value)=split('=',$item);
5947: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
5948: }
5949: foreach my $item (split('&',$cat_order)) {
5950: my ($name,$value)=split('=',$item);
5951: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
5952: }
5953: return 'ok';
5954: }
5955: return $response;
5956: }
5957:
5958: sub auto_courserequest_checks {
5959: my ($dom) = @_;
5960: my ($homeserver,%validations);
5961: if ($dom =~ /^$match_domain$/) {
5962: $homeserver = &domain($dom,'primary');
5963: }
5964: unless ($homeserver eq 'no_host') {
5965: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
5966: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
5967: my @items = split(/&/,$response);
5968: foreach my $item (@items) {
5969: my ($key,$value) = split('=',$item);
5970: $validations{&unescape($key)} = &thaw_unescape($value);
5971: }
5972: }
5973: }
5974: return %validations;
5975: }
5976:
5977: sub auto_courserequest_validation {
5978: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
5979: my ($homeserver,$response);
5980: if ($dom =~ /^$match_domain$/) {
5981: $homeserver = &domain($dom,'primary');
5982: }
5983: unless ($homeserver eq 'no_host') {
5984:
5985: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
5986: ':'.&escape($crstype).':'.&escape($inststatuslist).
5987: ':'.&escape($instcode).':'.&escape($instseclist),
5988: $homeserver));
5989: }
5990: return $response;
5991: }
5992:
5993: sub auto_validate_class_sec {
5994: my ($cdom,$cnum,$owners,$inst_class) = @_;
5995: my $homeserver = &homeserver($cnum,$cdom);
5996: my $ownerlist;
5997: if (ref($owners) eq 'ARRAY') {
5998: $ownerlist = join(',',@{$owners});
5999: } else {
6000: $ownerlist = $owners;
6001: }
6002: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6003: &escape($ownerlist).':'.$cdom,$homeserver);
6004: return $response;
6005: }
6006:
6007: # ------------------------------------------------------- Course Group routines
6008:
6009: sub get_coursegroups {
6010: my ($cdom,$cnum,$group,$namespace) = @_;
6011: return(&dump($namespace,$cdom,$cnum,$group));
6012: }
6013:
6014: sub modify_coursegroup {
6015: my ($cdom,$cnum,$groupsettings) = @_;
6016: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6017: }
6018:
6019: sub toggle_coursegroup_status {
6020: my ($cdom,$cnum,$group,$action) = @_;
6021: my ($from_namespace,$to_namespace);
6022: if ($action eq 'delete') {
6023: $from_namespace = 'coursegroups';
6024: $to_namespace = 'deleted_groups';
6025: } else {
6026: $from_namespace = 'deleted_groups';
6027: $to_namespace = 'coursegroups';
6028: }
6029: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6030: if (my $tmp = &error(%curr_group)) {
6031: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6032: return ('read error',$tmp);
6033: } else {
6034: my %savedsettings = %curr_group;
6035: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6036: my $deloutcome;
6037: if ($result eq 'ok') {
6038: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6039: } else {
6040: return ('write error',$result);
6041: }
6042: if ($deloutcome eq 'ok') {
6043: return 'ok';
6044: } else {
6045: return ('delete error',$deloutcome);
6046: }
6047: }
6048: }
6049:
6050: sub modify_group_roles {
6051: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6052: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6053: my $role = 'gr/'.&escape($userprivs);
6054: my ($uname,$udom) = split(/:/,$user);
6055: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6056: if ($result eq 'ok') {
6057: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6058: }
6059: return $result;
6060: }
6061:
6062: sub modify_coursegroup_membership {
6063: my ($cdom,$cnum,$membership) = @_;
6064: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6065: return $result;
6066: }
6067:
6068: sub get_active_groups {
6069: my ($udom,$uname,$cdom,$cnum) = @_;
6070: my $now = time;
6071: my %groups = ();
6072: foreach my $key (keys(%env)) {
6073: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6074: my ($start,$end) = split(/\./,$env{$key});
6075: if (($end!=0) && ($end<$now)) { next; }
6076: if (($start!=0) && ($start>$now)) { next; }
6077: if ($1 eq $cdom && $2 eq $cnum) {
6078: $groups{$3} = $env{$key} ;
6079: }
6080: }
6081: }
6082: return %groups;
6083: }
6084:
6085: sub get_group_membership {
6086: my ($cdom,$cnum,$group) = @_;
6087: return(&dump('groupmembership',$cdom,$cnum,$group));
6088: }
6089:
6090: sub get_users_groups {
6091: my ($udom,$uname,$courseid) = @_;
6092: my @usersgroups;
6093: my $cachetime=1800;
6094:
6095: my $hashid="$udom:$uname:$courseid";
6096: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6097: if (defined($cached)) {
6098: @usersgroups = split(/:/,$grouplist);
6099: } else {
6100: $grouplist = '';
6101: my $courseurl = &courseid_to_courseurl($courseid);
6102: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
6103: my $access_end = $env{'course.'.$courseid.
6104: '.default_enrollment_end_date'};
6105: my $now = time;
6106: foreach my $key (keys(%roleshash)) {
6107: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6108: my $group = $1;
6109: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6110: my $start = $2;
6111: my $end = $1;
6112: if ($start == -1) { next; } # deleted from group
6113: if (($start!=0) && ($start>$now)) { next; }
6114: if (($end!=0) && ($end<$now)) {
6115: if ($access_end && $access_end < $now) {
6116: if ($access_end - $end < 86400) {
6117: push(@usersgroups,$group);
6118: }
6119: }
6120: next;
6121: }
6122: push(@usersgroups,$group);
6123: }
6124: }
6125: }
6126: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6127: $grouplist = join(':',@usersgroups);
6128: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6129: }
6130: return @usersgroups;
6131: }
6132:
6133: sub devalidate_getgroups_cache {
6134: my ($udom,$uname,$cdom,$cnum)=@_;
6135: my $courseid = $cdom.'_'.$cnum;
6136:
6137: my $hashid="$udom:$uname:$courseid";
6138: &devalidate_cache_new('getgroups',$hashid);
6139: }
6140:
6141: # ------------------------------------------------------------------ Plain Text
6142:
6143: sub plaintext {
6144: my ($short,$type,$cid,$forcedefault) = @_;
6145: if ($short =~ /^cr/) {
6146: return (split('/',$short))[-1];
6147: }
6148: if (!defined($cid)) {
6149: $cid = $env{'request.course.id'};
6150: }
6151: my %rolenames = (
6152: Course => 'std',
6153: Community => 'alt1',
6154: );
6155: if ($cid ne '') {
6156: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6157: unless ($forcedefault) {
6158: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6159: &Apache::lonlocal::mt_escape(\$roletext);
6160: return &Apache::lonlocal::mt($roletext);
6161: }
6162: }
6163: }
6164: if ((defined($type)) && (defined($rolenames{$type})) &&
6165: (defined($rolenames{$type})) &&
6166: (defined($prp{$short}{$rolenames{$type}}))) {
6167: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6168: } elsif ($cid ne '') {
6169: my $crstype = $env{'course.'.$cid.'.type'};
6170: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6171: (defined($prp{$short}{$rolenames{$crstype}}))) {
6172: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6173: }
6174: }
6175: return &Apache::lonlocal::mt($prp{$short}{'std'});
6176: }
6177:
6178: # ----------------------------------------------------------------- Assign Role
6179:
6180: sub assignrole {
6181: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6182: $context)=@_;
6183: my $mrole;
6184: if ($role =~ /^cr\//) {
6185: my $cwosec=$url;
6186: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6187: unless (&allowed('ccr',$cwosec)) {
6188: my $refused = 1;
6189: if ($context eq 'requestcourses') {
6190: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6191: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6192: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6193: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6194: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6195: if ($crsenv{'internal.courseowner'} eq
6196: $env{'user.name'}.':'.$env{'user.domain'}) {
6197: $refused = '';
6198: }
6199: }
6200: }
6201: }
6202: }
6203: if ($refused) {
6204: &logthis('Refused custom assignrole: '.
6205: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6206: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6207: return 'refused';
6208: }
6209: }
6210: $mrole='cr';
6211: } elsif ($role =~ /^gr\//) {
6212: my $cwogrp=$url;
6213: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6214: unless (&allowed('mdg',$cwogrp)) {
6215: &logthis('Refused group assignrole: '.
6216: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6217: $env{'user.name'}.' at '.$env{'user.domain'});
6218: return 'refused';
6219: }
6220: $mrole='gr';
6221: } else {
6222: my $cwosec=$url;
6223: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6224: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6225: my $refused;
6226: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6227: if (!(&allowed('c'.$role,$url))) {
6228: $refused = 1;
6229: }
6230: } else {
6231: $refused = 1;
6232: }
6233: if ($refused) {
6234: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6235: $refused = '';
6236: } elsif ($context eq 'requestcourses') {
6237: my @possroles = ('st','ta','ep','in','cc','co');
6238: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6239: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6240: my $wrongcc;
6241: if ($cnum =~ /^$match_community$/) {
6242: $wrongcc = 1 if ($role eq 'cc');
6243: } else {
6244: $wrongcc = 1 if ($role eq 'co');
6245: }
6246: unless ($wrongcc) {
6247: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6248: if ($crsenv{'internal.courseowner'} eq
6249: $env{'user.name'}.':'.$env{'user.domain'}) {
6250: $refused = '';
6251: }
6252: }
6253: }
6254: }
6255: if ($refused) {
6256: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6257: ' '.$role.' '.$end.' '.$start.' by '.
6258: $env{'user.name'}.' at '.$env{'user.domain'});
6259: return 'refused';
6260: }
6261: }
6262: }
6263: $mrole=$role;
6264: }
6265: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6266: "$udom:$uname:$url".'_'."$mrole=$role";
6267: if ($end) { $command.='_'.$end; }
6268: if ($start) {
6269: if ($end) {
6270: $command.='_'.$start;
6271: } else {
6272: $command.='_0_'.$start;
6273: }
6274: }
6275: my $origstart = $start;
6276: my $origend = $end;
6277: my $delflag;
6278: # actually delete
6279: if ($deleteflag) {
6280: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6281: # modify command to delete the role
6282: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6283: "$udom:$uname:$url".'_'."$mrole";
6284: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6285: # set start and finish to negative values for userrolelog
6286: $start=-1;
6287: $end=-1;
6288: $delflag = 1;
6289: }
6290: }
6291: # send command
6292: my $answer=&reply($command,&homeserver($uname,$udom));
6293: # log new user role if status is ok
6294: if ($answer eq 'ok') {
6295: &userrolelog($role,$uname,$udom,$url,$start,$end);
6296: # for course roles, perform group memberships changes triggered by role change.
6297: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6298: unless ($role =~ /^gr/) {
6299: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6300: $origstart,$selfenroll,$context);
6301: }
6302: }
6303: return $answer;
6304: }
6305:
6306: # -------------------------------------------------- Modify user authentication
6307: # Overrides without validation
6308:
6309: sub modifyuserauth {
6310: my ($udom,$uname,$umode,$upass)=@_;
6311: my $uhome=&homeserver($uname,$udom);
6312: unless (&allowed('mau',$udom)) { return 'refused'; }
6313: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6314: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6315: ' in domain '.$env{'request.role.domain'});
6316: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6317: &escape($upass),$uhome);
6318: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6319: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6320: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6321: &log($udom,,$uname,$uhome,
6322: 'Authentication changed by '.$env{'user.domain'}.', '.
6323: $env{'user.name'}.', '.$umode.
6324: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6325: unless ($reply eq 'ok') {
6326: &logthis('Authentication mode error: '.$reply);
6327: return 'error: '.$reply;
6328: }
6329: return 'ok';
6330: }
6331:
6332: # --------------------------------------------------------------- Modify a user
6333:
6334: sub modifyuser {
6335: my ($udom, $uname, $uid,
6336: $umode, $upass, $first,
6337: $middle, $last, $gene,
6338: $forceid, $desiredhome, $email, $inststatus)=@_;
6339: $udom= &LONCAPA::clean_domain($udom);
6340: $uname=&LONCAPA::clean_username($uname);
6341: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6342: $umode.', '.$first.', '.$middle.', '.
6343: $last.', '.$gene.'(forceid: '.$forceid.')'.
6344: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6345: ' desiredhome not specified').
6346: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6347: ' in domain '.$env{'request.role.domain'});
6348: my $uhome=&homeserver($uname,$udom,'true');
6349: # ----------------------------------------------------------------- Create User
6350: if (($uhome eq 'no_host') &&
6351: (($umode && $upass) || ($umode eq 'localauth'))) {
6352: my $unhome='';
6353: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6354: $unhome = $desiredhome;
6355: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6356: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6357: } else { # load balancing routine for determining $unhome
6358: my $loadm=10000000;
6359: my %servers = &get_servers($udom,'library');
6360: foreach my $tryserver (keys(%servers)) {
6361: my $answer=reply('load',$tryserver);
6362: if (($answer=~/\d+/) && ($answer<$loadm)) {
6363: $loadm=$answer;
6364: $unhome=$tryserver;
6365: }
6366: }
6367: }
6368: if (($unhome eq '') || ($unhome eq 'no_host')) {
6369: return 'error: unable to find a home server for '.$uname.
6370: ' in domain '.$udom;
6371: }
6372: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6373: &escape($upass),$unhome);
6374: unless ($reply eq 'ok') {
6375: return 'error: '.$reply;
6376: }
6377: $uhome=&homeserver($uname,$udom,'true');
6378: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6379: return 'error: unable verify users home machine.';
6380: }
6381: } # End of creation of new user
6382: # ---------------------------------------------------------------------- Add ID
6383: if ($uid) {
6384: $uid=~tr/A-Z/a-z/;
6385: my %uidhash=&idrget($udom,$uname);
6386: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6387: && (!$forceid)) {
6388: unless ($uid eq $uidhash{$uname}) {
6389: return 'error: user id "'.$uid.'" does not match '.
6390: 'current user id "'.$uidhash{$uname}.'".';
6391: }
6392: } else {
6393: &idput($udom,($uname => $uid));
6394: }
6395: }
6396: # -------------------------------------------------------------- Add names, etc
6397: my @tmp=&get('environment',
6398: ['firstname','middlename','lastname','generation','id',
6399: 'permanentemail','inststatus'],
6400: $udom,$uname);
6401: my %names;
6402: if ($tmp[0] =~ m/^error:.*/) {
6403: %names=();
6404: } else {
6405: %names = @tmp;
6406: }
6407: #
6408: # Make sure to not trash student environment if instructor does not bother
6409: # to supply name and email information
6410: #
6411: if ($first) { $names{'firstname'} = $first; }
6412: if (defined($middle)) { $names{'middlename'} = $middle; }
6413: if ($last) { $names{'lastname'} = $last; }
6414: if (defined($gene)) { $names{'generation'} = $gene; }
6415: if ($email) {
6416: $email=~s/[^\w\@\.\-\,]//gs;
6417: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6418: }
6419: if ($uid) { $names{'id'} = $uid; }
6420: if (defined($inststatus)) {
6421: $names{'inststatus'} = '';
6422: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6423: if (ref($usertypes) eq 'HASH') {
6424: my @okstatuses;
6425: foreach my $item (split(/:/,$inststatus)) {
6426: if (defined($usertypes->{$item})) {
6427: push(@okstatuses,$item);
6428: }
6429: }
6430: if (@okstatuses) {
6431: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6432: }
6433: }
6434: }
6435: my $reply = &put('environment', \%names, $udom,$uname);
6436: if ($reply ne 'ok') { return 'error: '.$reply; }
6437: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6438: &devalidate_cache_new('namescache',$uname.':'.$udom);
6439: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
6440: $umode.', '.$first.', '.$middle.', '.
6441: $last.', '.$gene.', '.$email.', '.$inststatus;
6442: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6443: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6444: } else {
6445: $logmsg .= ' during self creation';
6446: }
6447: &logthis($logmsg);
6448: return 'ok';
6449: }
6450:
6451: # -------------------------------------------------------------- Modify student
6452:
6453: sub modifystudent {
6454: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6455: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6456: $selfenroll,$context,$inststatus)=@_;
6457: if (!$cid) {
6458: unless ($cid=$env{'request.course.id'}) {
6459: return 'not_in_class';
6460: }
6461: }
6462: # --------------------------------------------------------------- Make the user
6463: my $reply=&modifyuser
6464: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6465: $desiredhome,$email,$inststatus);
6466: unless ($reply eq 'ok') { return $reply; }
6467: # This will cause &modify_student_enrollment to get the uid from the
6468: # students environment
6469: $uid = undef if (!$forceid);
6470: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6471: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6472: return $reply;
6473: }
6474:
6475: sub modify_student_enrollment {
6476: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6477: my ($cdom,$cnum,$chome);
6478: if (!$cid) {
6479: unless ($cid=$env{'request.course.id'}) {
6480: return 'not_in_class';
6481: }
6482: $cdom=$env{'course.'.$cid.'.domain'};
6483: $cnum=$env{'course.'.$cid.'.num'};
6484: } else {
6485: ($cdom,$cnum)=split(/_/,$cid);
6486: }
6487: $chome=$env{'course.'.$cid.'.home'};
6488: if (!$chome) {
6489: $chome=&homeserver($cnum,$cdom);
6490: }
6491: if (!$chome) { return 'unknown_course'; }
6492: # Make sure the user exists
6493: my $uhome=&homeserver($uname,$udom);
6494: if (($uhome eq '') || ($uhome eq 'no_host')) {
6495: return 'error: no such user';
6496: }
6497: # Get student data if we were not given enough information
6498: if (!defined($first) || $first eq '' ||
6499: !defined($last) || $last eq '' ||
6500: !defined($uid) || $uid eq '' ||
6501: !defined($middle) || $middle eq '' ||
6502: !defined($gene) || $gene eq '') {
6503: # They did not supply us with enough data to enroll the student, so
6504: # we need to pick up more information.
6505: my %tmp = &get('environment',
6506: ['firstname','middlename','lastname', 'generation','id']
6507: ,$udom,$uname);
6508:
6509: #foreach my $key (keys(%tmp)) {
6510: # &logthis("key $key = ".$tmp{$key});
6511: #}
6512: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6513: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6514: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6515: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6516: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6517: }
6518: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6519: my $reply=cput('classlist',
6520: {"$uname:$udom" =>
6521: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6522: $cdom,$cnum);
6523: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6524: return 'error: '.$reply;
6525: } else {
6526: &devalidate_getsection_cache($udom,$uname,$cid);
6527: }
6528: # Add student role to user
6529: my $uurl='/'.$cid;
6530: $uurl=~s/\_/\//g;
6531: if ($usec) {
6532: $uurl.='/'.$usec;
6533: }
6534: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6535: }
6536:
6537: sub format_name {
6538: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6539: my $name;
6540: if ($first ne 'lastname') {
6541: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6542: } else {
6543: if ($lastname=~/\S/) {
6544: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6545: $name=~s/\s+,/,/;
6546: } else {
6547: $name.= $firstname.' '.$middlename.' '.$generation;
6548: }
6549: }
6550: $name=~s/^\s+//;
6551: $name=~s/\s+$//;
6552: $name=~s/\s+/ /g;
6553: return $name;
6554: }
6555:
6556: # ------------------------------------------------- Write to course preferences
6557:
6558: sub writecoursepref {
6559: my ($courseid,%prefs)=@_;
6560: $courseid=~s/^\///;
6561: $courseid=~s/\_/\//g;
6562: my ($cdomain,$cnum)=split(/\//,$courseid);
6563: my $chome=homeserver($cnum,$cdomain);
6564: if (($chome eq '') || ($chome eq 'no_host')) {
6565: return 'error: no such course';
6566: }
6567: my $cstring='';
6568: foreach my $pref (keys(%prefs)) {
6569: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6570: }
6571: $cstring=~s/\&$//;
6572: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6573: }
6574:
6575: # ---------------------------------------------------------- Make/modify course
6576:
6577: sub createcourse {
6578: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
6579: $course_owner,$crstype,$cnum,$context,$category)=@_;
6580: $url=&declutter($url);
6581: my $cid='';
6582: if ($context eq 'requestcourses') {
6583: my $can_create = 0;
6584: my ($ownername,$ownerdom) = split(':',$course_owner);
6585: if ($udom eq $ownerdom) {
6586: if (&usertools_access($ownername,$ownerdom,$category,undef,
6587: $context)) {
6588: $can_create = 1;
6589: }
6590: } else {
6591: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
6592: $category);
6593: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
6594: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
6595: if (@curr > 0) {
6596: my @options = qw(approval validate autolimit);
6597: my $optregex = join('|',@options);
6598: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
6599: $can_create = 1;
6600: }
6601: }
6602: }
6603: }
6604: if ($can_create) {
6605: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
6606: unless (&allowed('ccc',$udom)) {
6607: return 'refused';
6608: }
6609: }
6610: } else {
6611: return 'refused';
6612: }
6613: } elsif (!&allowed('ccc',$udom)) {
6614: return 'refused';
6615: }
6616: # --------------------------------------------------------------- Get Unique ID
6617: my $uname;
6618: if ($cnum =~ /^$match_courseid$/) {
6619: my $chome=&homeserver($cnum,$udom,'true');
6620: if (($chome eq '') || ($chome eq 'no_host')) {
6621: $uname = $cnum;
6622: } else {
6623: $uname = &generate_coursenum($udom,$crstype);
6624: }
6625: } else {
6626: $uname = &generate_coursenum($udom,$crstype);
6627: }
6628: return $uname if ($uname =~ /^error/);
6629: # -------------------------------------------------- Check supplied server name
6630: $course_server = $env{'user.homeserver'} if (! defined($course_server));
6631: if (! &is_library($course_server)) {
6632: return 'error:bad server name '.$course_server;
6633: }
6634: # ------------------------------------------------------------- Make the course
6635: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
6636: $course_server);
6637: unless ($reply eq 'ok') { return 'error: '.$reply; }
6638: my $uhome=&homeserver($uname,$udom,'true');
6639: if (($uhome eq '') || ($uhome eq 'no_host')) {
6640: return 'error: no such course';
6641: }
6642: # ----------------------------------------------------------------- Course made
6643: # log existence
6644: my $now = time;
6645: my $newcourse = {
6646: $udom.'_'.$uname => {
6647: description => $description,
6648: inst_code => $inst_code,
6649: owner => $course_owner,
6650: type => $crstype,
6651: creator => $env{'user.name'}.':'.
6652: $env{'user.domain'},
6653: created => $now,
6654: context => $context,
6655: },
6656: };
6657: &courseidput($udom,$newcourse,$uhome,'notime');
6658: # set toplevel url
6659: my $topurl=$url;
6660: unless ($nonstandard) {
6661: # ------------------------------------------ For standard courses, make top url
6662: my $mapurl=&clutter($url);
6663: if ($mapurl eq '/res/') { $mapurl=''; }
6664: $env{'form.initmap'}=(<<ENDINITMAP);
6665: <map>
6666: <resource id="1" type="start"></resource>
6667: <resource id="2" src="$mapurl"></resource>
6668: <resource id="3" type="finish"></resource>
6669: <link index="1" from="1" to="2"></link>
6670: <link index="2" from="2" to="3"></link>
6671: </map>
6672: ENDINITMAP
6673: $topurl=&declutter(
6674: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
6675: );
6676: }
6677: # ----------------------------------------------------------- Write preferences
6678: &writecoursepref($udom.'_'.$uname,
6679: ('description' => $description,
6680: 'url' => $topurl));
6681: return '/'.$udom.'/'.$uname;
6682: }
6683:
6684: # ------------------------------------------------------------------- Create ID
6685: sub generate_coursenum {
6686: my ($udom,$crstype) = @_;
6687: my $domdesc = &domain($udom);
6688: return 'error: invalid domain' if ($domdesc eq '');
6689: my $first;
6690: if ($crstype eq 'Community') {
6691: $first = '0';
6692: } else {
6693: $first = int(1+rand(9));
6694: }
6695: my $uname=$first.
6696: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6697: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6698: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6699: # ----------------------------------------------- Make sure that does not exist
6700: my $uhome=&homeserver($uname,$udom,'true');
6701: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6702: if ($crstype eq 'Community') {
6703: $first = '0';
6704: } else {
6705: $first = int(1+rand(9));
6706: }
6707: $uname=$first.
6708: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6709: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6710: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6711: $uhome=&homeserver($uname,$udom,'true');
6712: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6713: return 'error: unable to generate unique course-ID';
6714: }
6715: }
6716: return $uname;
6717: }
6718:
6719: sub is_course {
6720: my ($cdom,$cnum) = @_;
6721: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
6722: undef,'.');
6723: if (exists($courses{$cdom.'_'.$cnum})) {
6724: return 1;
6725: }
6726: return 0;
6727: }
6728:
6729: sub store_userdata {
6730: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
6731: my $result;
6732: if ($datakey ne '') {
6733: if (ref($storehash) eq 'HASH') {
6734: if ($udom eq '' || $uname eq '') {
6735: $udom = $env{'user.domain'};
6736: $uname = $env{'user.name'};
6737: }
6738: my $uhome=&homeserver($uname,$udom);
6739: if (($uhome eq '') || ($uhome eq 'no_host')) {
6740: $result = 'error: no_host';
6741: } else {
6742: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
6743: $storehash->{'host'} = $perlvar{'lonHostID'};
6744:
6745: my $namevalue='';
6746: foreach my $key (keys(%{$storehash})) {
6747: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6748: }
6749: $namevalue=~s/\&$//;
6750: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
6751: "$namespace:$datakey:$namevalue",$uhome);
6752: }
6753: } else {
6754: $result = 'error: data to store was not a hash reference';
6755: }
6756: } else {
6757: $result= 'error: invalid requestkey';
6758: }
6759: return $result;
6760: }
6761:
6762: # ---------------------------------------------------------- Assign Custom Role
6763:
6764: sub assigncustomrole {
6765: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
6766: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
6767: $end,$start,$deleteflag,$selfenroll,$context);
6768: }
6769:
6770: # ----------------------------------------------------------------- Revoke Role
6771:
6772: sub revokerole {
6773: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
6774: my $now=time;
6775: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
6776: }
6777:
6778: # ---------------------------------------------------------- Revoke Custom Role
6779:
6780: sub revokecustomrole {
6781: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
6782: my $now=time;
6783: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
6784: $deleteflag,$selfenroll,$context);
6785: }
6786:
6787: # ------------------------------------------------------------ Disk usage
6788: sub diskusage {
6789: my ($udom,$uname,$directorypath,$getpropath)=@_;
6790: $directorypath =~ s/\/$//;
6791: my $listing=&reply('du2:'.&escape($directorypath).':'
6792: .&escape($getpropath).':'.&escape($uname).':'
6793: .&escape($udom),homeserver($uname,$udom));
6794: if ($listing eq 'unknown_cmd') {
6795: if ($getpropath) {
6796: $directorypath = &propath($udom,$uname).'/'.$directorypath;
6797: }
6798: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
6799: }
6800: return $listing;
6801: }
6802:
6803: sub is_locked {
6804: my ($file_name, $domain, $user) = @_;
6805: my @check;
6806: my $is_locked;
6807: push @check, $file_name;
6808: my %locked = &get('file_permissions',\@check,
6809: $env{'user.domain'},$env{'user.name'});
6810: my ($tmp)=keys(%locked);
6811: if ($tmp=~/^error:/) { undef(%locked); }
6812:
6813: if (ref($locked{$file_name}) eq 'ARRAY') {
6814: $is_locked = 'false';
6815: foreach my $entry (@{$locked{$file_name}}) {
6816: if (ref($entry) eq 'ARRAY') {
6817: $is_locked = 'true';
6818: last;
6819: }
6820: }
6821: } else {
6822: $is_locked = 'false';
6823: }
6824: }
6825:
6826: sub declutter_portfile {
6827: my ($file) = @_;
6828: $file =~ s{^(/portfolio/|portfolio/)}{/};
6829: return $file;
6830: }
6831:
6832: # ------------------------------------------------------------- Mark as Read Only
6833:
6834: sub mark_as_readonly {
6835: my ($domain,$user,$files,$what) = @_;
6836: my %current_permissions = &dump('file_permissions',$domain,$user);
6837: my ($tmp)=keys(%current_permissions);
6838: if ($tmp=~/^error:/) { undef(%current_permissions); }
6839: foreach my $file (@{$files}) {
6840: $file = &declutter_portfile($file);
6841: push(@{$current_permissions{$file}},$what);
6842: }
6843: &put('file_permissions',\%current_permissions,$domain,$user);
6844: return;
6845: }
6846:
6847: # ------------------------------------------------------------Save Selected Files
6848:
6849: sub save_selected_files {
6850: my ($user, $path, @files) = @_;
6851: my $filename = $user."savedfiles";
6852: my @other_files = &files_not_in_path($user, $path);
6853: open (OUT, '>'.$tmpdir.$filename);
6854: foreach my $file (@files) {
6855: print (OUT $env{'form.currentpath'}.$file."\n");
6856: }
6857: foreach my $file (@other_files) {
6858: print (OUT $file."\n");
6859: }
6860: close (OUT);
6861: return 'ok';
6862: }
6863:
6864: sub clear_selected_files {
6865: my ($user) = @_;
6866: my $filename = $user."savedfiles";
6867: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6868: print (OUT undef);
6869: close (OUT);
6870: return ("ok");
6871: }
6872:
6873: sub files_in_path {
6874: my ($user, $path) = @_;
6875: my $filename = $user."savedfiles";
6876: my %return_files;
6877: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6878: while (my $line_in = <IN>) {
6879: chomp ($line_in);
6880: my @paths_and_file = split (m!/!, $line_in);
6881: my $file_part = pop (@paths_and_file);
6882: my $path_part = join ('/', @paths_and_file);
6883: $path_part.='/';
6884: my $path_and_file = $path_part.$file_part;
6885: if ($path_part eq $path) {
6886: $return_files{$file_part}= 'selected';
6887: }
6888: }
6889: close (IN);
6890: return (\%return_files);
6891: }
6892:
6893: # called in portfolio select mode, to show files selected NOT in current directory
6894: sub files_not_in_path {
6895: my ($user, $path) = @_;
6896: my $filename = $user."savedfiles";
6897: my @return_files;
6898: my $path_part;
6899: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6900: while (my $line = <IN>) {
6901: #ok, I know it's clunky, but I want it to work
6902: my @paths_and_file = split(m|/|, $line);
6903: my $file_part = pop(@paths_and_file);
6904: chomp($file_part);
6905: my $path_part = join('/', @paths_and_file);
6906: $path_part .= '/';
6907: my $path_and_file = $path_part.$file_part;
6908: if ($path_part ne $path) {
6909: push(@return_files, ($path_and_file));
6910: }
6911: }
6912: close(OUT);
6913: return (@return_files);
6914: }
6915:
6916: #----------------------------------------------Get portfolio file permissions
6917:
6918: sub get_portfile_permissions {
6919: my ($domain,$user) = @_;
6920: my %current_permissions = &dump('file_permissions',$domain,$user);
6921: my ($tmp)=keys(%current_permissions);
6922: if ($tmp=~/^error:/) { undef(%current_permissions); }
6923: return \%current_permissions;
6924: }
6925:
6926: #---------------------------------------------Get portfolio file access controls
6927:
6928: sub get_access_controls {
6929: my ($current_permissions,$group,$file) = @_;
6930: my %access;
6931: my $real_file = $file;
6932: $file =~ s/\.meta$//;
6933: if (defined($file)) {
6934: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6935: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6936: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6937: }
6938: }
6939: } else {
6940: foreach my $key (keys(%{$current_permissions})) {
6941: if ($key =~ /\0accesscontrol$/) {
6942: if (defined($group)) {
6943: if ($key !~ m-^\Q$group\E/-) {
6944: next;
6945: }
6946: }
6947: my ($fullpath) = split(/\0/,$key);
6948: if (ref($$current_permissions{$key}) eq 'HASH') {
6949: foreach my $control (keys(%{$$current_permissions{$key}})) {
6950: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6951: }
6952: }
6953: }
6954: }
6955: }
6956: return %access;
6957: }
6958:
6959: sub modify_access_controls {
6960: my ($file_name,$changes,$domain,$user)=@_;
6961: my ($outcome,$deloutcome);
6962: my %store_permissions;
6963: my %new_values;
6964: my %new_control;
6965: my %translation;
6966: my @deletions = ();
6967: my $now = time;
6968: if (exists($$changes{'activate'})) {
6969: if (ref($$changes{'activate'}) eq 'HASH') {
6970: my @newitems = sort(keys(%{$$changes{'activate'}}));
6971: my $numnew = scalar(@newitems);
6972: for (my $i=0; $i<$numnew; $i++) {
6973: my $newkey = $newitems[$i];
6974: my $newid = &Apache::loncommon::get_cgi_id();
6975: if ($newkey =~ /^\d+:/) {
6976: $newkey =~ s/^(\d+)/$newid/;
6977: $translation{$1} = $newid;
6978: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6979: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6980: $translation{$1} = $newid;
6981: }
6982: $new_values{$file_name."\0".$newkey} =
6983: $$changes{'activate'}{$newitems[$i]};
6984: $new_control{$newkey} = $now;
6985: }
6986: }
6987: }
6988: my %todelete;
6989: my %changed_items;
6990: foreach my $action ('delete','update') {
6991: if (exists($$changes{$action})) {
6992: if (ref($$changes{$action}) eq 'HASH') {
6993: foreach my $key (keys(%{$$changes{$action}})) {
6994: my ($itemnum) = ($key =~ /^([^:]+):/);
6995: if ($action eq 'delete') {
6996: $todelete{$itemnum} = 1;
6997: } else {
6998: $changed_items{$itemnum} = $key;
6999: }
7000: }
7001: }
7002: }
7003: }
7004: # get lock on access controls for file.
7005: my $lockhash = {
7006: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7007: ':'.$env{'user.domain'},
7008: };
7009: my $tries = 0;
7010: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7011:
7012: while (($gotlock ne 'ok') && $tries <3) {
7013: $tries ++;
7014: sleep 1;
7015: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7016: }
7017: if ($gotlock eq 'ok') {
7018: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7019: my ($tmp)=keys(%curr_permissions);
7020: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7021: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7022: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7023: if (ref($curr_controls) eq 'HASH') {
7024: foreach my $control_item (keys(%{$curr_controls})) {
7025: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7026: if (defined($todelete{$itemnum})) {
7027: push(@deletions,$file_name."\0".$control_item);
7028: } else {
7029: if (defined($changed_items{$itemnum})) {
7030: $new_control{$changed_items{$itemnum}} = $now;
7031: push(@deletions,$file_name."\0".$control_item);
7032: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7033: } else {
7034: $new_control{$control_item} = $$curr_controls{$control_item};
7035: }
7036: }
7037: }
7038: }
7039: }
7040: my ($group);
7041: if (&is_course($domain,$user)) {
7042: ($group,my $file) = split(/\//,$file_name,2);
7043: }
7044: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7045: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7046: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7047: # remove lock
7048: my @del_lock = ($file_name."\0".'locked_access_records');
7049: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7050: my $sqlresult =
7051: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7052: $group);
7053: } else {
7054: $outcome = "error: could not obtain lockfile\n";
7055: }
7056: return ($outcome,$deloutcome,\%new_values,\%translation);
7057: }
7058:
7059: sub make_public_indefinitely {
7060: my ($requrl) = @_;
7061: my $now = time;
7062: my $action = 'activate';
7063: my $aclnum = 0;
7064: if (&is_portfolio_url($requrl)) {
7065: my (undef,$udom,$unum,$file_name,$group) =
7066: &parse_portfolio_url($requrl);
7067: my $current_perms = &get_portfile_permissions($udom,$unum);
7068: my %access_controls = &get_access_controls($current_perms,
7069: $group,$file_name);
7070: foreach my $key (keys(%{$access_controls{$file_name}})) {
7071: my ($num,$scope,$end,$start) =
7072: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7073: if ($scope eq 'public') {
7074: if ($start <= $now && $end == 0) {
7075: $action = 'none';
7076: } else {
7077: $action = 'update';
7078: $aclnum = $num;
7079: }
7080: last;
7081: }
7082: }
7083: if ($action eq 'none') {
7084: return 'ok';
7085: } else {
7086: my %changes;
7087: my $newend = 0;
7088: my $newstart = $now;
7089: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7090: $changes{$action}{$newkey} = {
7091: type => 'public',
7092: time => {
7093: start => $newstart,
7094: end => $newend,
7095: },
7096: };
7097: my ($outcome,$deloutcome,$new_values,$translation) =
7098: &modify_access_controls($file_name,\%changes,$udom,$unum);
7099: return $outcome;
7100: }
7101: } else {
7102: return 'invalid';
7103: }
7104: }
7105:
7106: #------------------------------------------------------Get Marked as Read Only
7107:
7108: sub get_marked_as_readonly {
7109: my ($domain,$user,$what,$group) = @_;
7110: my $current_permissions = &get_portfile_permissions($domain,$user);
7111: my @readonly_files;
7112: my $cmp1=$what;
7113: if (ref($what)) { $cmp1=join('',@{$what}) };
7114: while (my ($file_name,$value) = each(%{$current_permissions})) {
7115: if (defined($group)) {
7116: if ($file_name !~ m-^\Q$group\E/-) {
7117: next;
7118: }
7119: }
7120: if (ref($value) eq "ARRAY"){
7121: foreach my $stored_what (@{$value}) {
7122: my $cmp2=$stored_what;
7123: if (ref($stored_what) eq 'ARRAY') {
7124: $cmp2=join('',@{$stored_what});
7125: }
7126: if ($cmp1 eq $cmp2) {
7127: push(@readonly_files, $file_name);
7128: last;
7129: } elsif (!defined($what)) {
7130: push(@readonly_files, $file_name);
7131: last;
7132: }
7133: }
7134: }
7135: }
7136: return @readonly_files;
7137: }
7138: #-----------------------------------------------------------Get Marked as Read Only Hash
7139:
7140: sub get_marked_as_readonly_hash {
7141: my ($current_permissions,$group,$what) = @_;
7142: my %readonly_files;
7143: while (my ($file_name,$value) = each(%{$current_permissions})) {
7144: if (defined($group)) {
7145: if ($file_name !~ m-^\Q$group\E/-) {
7146: next;
7147: }
7148: }
7149: if (ref($value) eq "ARRAY"){
7150: foreach my $stored_what (@{$value}) {
7151: if (ref($stored_what) eq 'ARRAY') {
7152: foreach my $lock_descriptor(@{$stored_what}) {
7153: if ($lock_descriptor eq 'graded') {
7154: $readonly_files{$file_name} = 'graded';
7155: } elsif ($lock_descriptor eq 'handback') {
7156: $readonly_files{$file_name} = 'handback';
7157: } else {
7158: if (!exists($readonly_files{$file_name})) {
7159: $readonly_files{$file_name} = 'locked';
7160: }
7161: }
7162: }
7163: }
7164: }
7165: }
7166: }
7167: return %readonly_files;
7168: }
7169: # ------------------------------------------------------------ Unmark as Read Only
7170:
7171: sub unmark_as_readonly {
7172: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7173: # for portfolio submissions, $what contains [$symb,$crsid]
7174: my ($domain,$user,$what,$file_name,$group) = @_;
7175: $file_name = &declutter_portfile($file_name);
7176: my $symb_crs = $what;
7177: if (ref($what)) { $symb_crs=join('',@$what); }
7178: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7179: my ($tmp)=keys(%current_permissions);
7180: if ($tmp=~/^error:/) { undef(%current_permissions); }
7181: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7182: foreach my $file (@readonly_files) {
7183: my $clean_file = &declutter_portfile($file);
7184: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7185: my $current_locks = $current_permissions{$file};
7186: my @new_locks;
7187: my @del_keys;
7188: if (ref($current_locks) eq "ARRAY"){
7189: foreach my $locker (@{$current_locks}) {
7190: my $compare=$locker;
7191: if (ref($locker) eq 'ARRAY') {
7192: $compare=join('',@{$locker});
7193: if ($compare ne $symb_crs) {
7194: push(@new_locks, $locker);
7195: }
7196: }
7197: }
7198: if (scalar(@new_locks) > 0) {
7199: $current_permissions{$file} = \@new_locks;
7200: } else {
7201: push(@del_keys, $file);
7202: &del('file_permissions',\@del_keys, $domain, $user);
7203: delete($current_permissions{$file});
7204: }
7205: }
7206: }
7207: &put('file_permissions',\%current_permissions,$domain,$user);
7208: return;
7209: }
7210:
7211: # ------------------------------------------------------------ Directory lister
7212:
7213: sub dirlist {
7214: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7215: $uri=~s/^\///;
7216: $uri=~s/\/$//;
7217: my ($udom, $uname);
7218: if ($getuserdir) {
7219: $udom = $userdomain;
7220: $uname = $username;
7221: } else {
7222: (undef,$udom,$uname)=split(/\//,$uri);
7223: if(defined($userdomain)) {
7224: $udom = $userdomain;
7225: }
7226: if(defined($username)) {
7227: $uname = $username;
7228: }
7229: }
7230: my ($dirRoot,$listing,@listing_results);
7231:
7232: $dirRoot = $perlvar{'lonDocRoot'};
7233: if (defined($getpropath)) {
7234: $dirRoot = &propath($udom,$uname);
7235: $dirRoot =~ s/\/$//;
7236: } elsif (defined($getuserdir)) {
7237: my $subdir=$uname.'__';
7238: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7239: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7240: ."/$udom/$subdir/$uname";
7241: } elsif (defined($alternateRoot)) {
7242: $dirRoot = $alternateRoot;
7243: }
7244:
7245: if($udom) {
7246: if($uname) {
7247: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7248: .$getuserdir.':'.&escape($dirRoot)
7249: .':'.&escape($uname).':'.&escape($udom),
7250: &homeserver($uname,$udom));
7251: if ($listing eq 'unknown_cmd') {
7252: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7253: &homeserver($uname,$udom));
7254: } else {
7255: @listing_results = map { &unescape($_); } split(/:/,$listing);
7256: }
7257: if ($listing eq 'unknown_cmd') {
7258: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7259: &homeserver($uname,$udom));
7260: @listing_results = split(/:/,$listing);
7261: } else {
7262: @listing_results = map { &unescape($_); } split(/:/,$listing);
7263: }
7264: return @listing_results;
7265: } elsif(!$alternateRoot) {
7266: my %allusers;
7267: my %servers = &get_servers($udom,'library');
7268: foreach my $tryserver (keys(%servers)) {
7269: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7270: &escape($udom),$tryserver);
7271: if ($listing eq 'unknown_cmd') {
7272: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7273: $udom, $tryserver);
7274: } else {
7275: @listing_results = map { &unescape($_); } split(/:/,$listing);
7276: }
7277: if ($listing eq 'unknown_cmd') {
7278: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7279: $udom, $tryserver);
7280: @listing_results = split(/:/,$listing);
7281: } else {
7282: @listing_results =
7283: map { &unescape($_); } split(/:/,$listing);
7284: }
7285: if ($listing_results[0] ne 'no_such_dir' &&
7286: $listing_results[0] ne 'empty' &&
7287: $listing_results[0] ne 'con_lost') {
7288: foreach my $line (@listing_results) {
7289: my ($entry) = split(/&/,$line,2);
7290: $allusers{$entry} = 1;
7291: }
7292: }
7293: }
7294: my $alluserstr='';
7295: foreach my $user (sort(keys(%allusers))) {
7296: $alluserstr.=$user.'&user:';
7297: }
7298: $alluserstr=~s/:$//;
7299: return split(/:/,$alluserstr);
7300: } else {
7301: return ('missing user name');
7302: }
7303: } elsif(!defined($getpropath)) {
7304: my @all_domains = sort(&all_domains());
7305: foreach my $domain (@all_domains) {
7306: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7307: }
7308: return @all_domains;
7309: } else {
7310: return ('missing domain');
7311: }
7312: }
7313:
7314: # --------------------------------------------- GetFileTimestamp
7315: # This function utilizes dirlist and returns the date stamp for
7316: # when it was last modified. It will also return an error of -1
7317: # if an error occurs
7318:
7319: sub GetFileTimestamp {
7320: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7321: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7322: $studentName = &LONCAPA::clean_username($studentName);
7323: my ($fileStat) =
7324: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7325: undef,$getuserdir);
7326: my @stats = split('&', $fileStat);
7327: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7328: # @stats contains first the filename, then the stat output
7329: return $stats[10]; # so this is 10 instead of 9.
7330: } else {
7331: return -1;
7332: }
7333: }
7334:
7335: sub stat_file {
7336: my ($uri) = @_;
7337: $uri = &clutter_with_no_wrapper($uri);
7338:
7339: my ($udom,$uname,$file);
7340: if ($uri =~ m-^/(uploaded|editupload)/-) {
7341: ($udom,$uname,$file) =
7342: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7343: $file = 'userfiles/'.$file;
7344: }
7345: if ($uri =~ m-^/res/-) {
7346: ($udom,$uname) =
7347: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7348: $file = $uri;
7349: }
7350:
7351: if (!$udom || !$uname || !$file) {
7352: # unable to handle the uri
7353: return ();
7354: }
7355: my $getpropath;
7356: if ($file =~ /^userfiles\//) {
7357: $getpropath = 1;
7358: }
7359: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7360: my @stats = split('&', $result);
7361:
7362: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7363: shift(@stats); #filename is first
7364: return @stats;
7365: }
7366: return ();
7367: }
7368:
7369: # -------------------------------------------------------- Value of a Condition
7370:
7371: # gets the value of a specific preevaluated condition
7372: # stored in the string $env{user.state.<cid>}
7373: # or looks up a condition reference in the bighash and if if hasn't
7374: # already been evaluated recurses into docondval to get the value of
7375: # the condition, then memoizing it to
7376: # $env{user.state.<cid>.<condition>}
7377: sub directcondval {
7378: my $number=shift;
7379: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7380: &Apache::lonuserstate::evalstate();
7381: }
7382: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7383: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7384: } elsif ($number =~ /^_/) {
7385: my $sub_condition;
7386: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7387: &GDBM_READER(),0640)) {
7388: $sub_condition=$bighash{'conditions'.$number};
7389: untie(%bighash);
7390: }
7391: my $value = &docondval($sub_condition);
7392: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7393: return $value;
7394: }
7395: if ($env{'user.state.'.$env{'request.course.id'}}) {
7396: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7397: } else {
7398: return 2;
7399: }
7400: }
7401:
7402: # get the collection of conditions for this resource
7403: sub condval {
7404: my $condidx=shift;
7405: my $allpathcond='';
7406: foreach my $cond (split(/\|/,$condidx)) {
7407: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7408: $allpathcond.=
7409: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7410: }
7411: }
7412: $allpathcond=~s/\|$//;
7413: return &docondval($allpathcond);
7414: }
7415:
7416: #evaluates an expression of conditions
7417: sub docondval {
7418: my ($allpathcond) = @_;
7419: my $result=0;
7420: if ($env{'request.course.id'}
7421: && defined($allpathcond)) {
7422: my $operand='|';
7423: my @stack;
7424: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7425: if ($chunk eq '(') {
7426: push @stack,($operand,$result);
7427: } elsif ($chunk eq ')') {
7428: my $before=pop @stack;
7429: if (pop @stack eq '&') {
7430: $result=$result>$before?$before:$result;
7431: } else {
7432: $result=$result>$before?$result:$before;
7433: }
7434: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7435: $operand=$chunk;
7436: } else {
7437: my $new=directcondval($chunk);
7438: if ($operand eq '&') {
7439: $result=$result>$new?$new:$result;
7440: } else {
7441: $result=$result>$new?$result:$new;
7442: }
7443: }
7444: }
7445: }
7446: return $result;
7447: }
7448:
7449: # ---------------------------------------------------- Devalidate courseresdata
7450:
7451: sub devalidatecourseresdata {
7452: my ($coursenum,$coursedomain)=@_;
7453: my $hashid=$coursenum.':'.$coursedomain;
7454: &devalidate_cache_new('courseres',$hashid);
7455: }
7456:
7457:
7458: # --------------------------------------------------- Course Resourcedata Query
7459: #
7460: # Parameters:
7461: # $coursenum - Number of the course.
7462: # $coursedomain - Domain at which the course was created.
7463: # Returns:
7464: # A hash of the course parameters along (I think) with timestamps
7465: # and version info.
7466:
7467: sub get_courseresdata {
7468: my ($coursenum,$coursedomain)=@_;
7469: my $coursehom=&homeserver($coursenum,$coursedomain);
7470: my $hashid=$coursenum.':'.$coursedomain;
7471: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7472: my %dumpreply;
7473: unless (defined($cached)) {
7474: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7475: $result=\%dumpreply;
7476: my ($tmp) = keys(%dumpreply);
7477: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7478: &do_cache_new('courseres',$hashid,$result,600);
7479: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7480: return $tmp;
7481: } elsif ($tmp =~ /^(error)/) {
7482: $result=undef;
7483: &do_cache_new('courseres',$hashid,$result,600);
7484: }
7485: }
7486: return $result;
7487: }
7488:
7489: sub devalidateuserresdata {
7490: my ($uname,$udom)=@_;
7491: my $hashid="$udom:$uname";
7492: &devalidate_cache_new('userres',$hashid);
7493: }
7494:
7495: sub get_userresdata {
7496: my ($uname,$udom)=@_;
7497: #most student don\'t have any data set, check if there is some data
7498: if (&EXT_cache_status($udom,$uname)) { return undef; }
7499:
7500: my $hashid="$udom:$uname";
7501: my ($result,$cached)=&is_cached_new('userres',$hashid);
7502: if (!defined($cached)) {
7503: my %resourcedata=&dump('resourcedata',$udom,$uname);
7504: $result=\%resourcedata;
7505: &do_cache_new('userres',$hashid,$result,600);
7506: }
7507: my ($tmp)=keys(%$result);
7508: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7509: return $result;
7510: }
7511: #error 2 occurs when the .db doesn't exist
7512: if ($tmp!~/error: 2 /) {
7513: &logthis("<font color=\"blue\">WARNING:".
7514: " Trying to get resource data for ".
7515: $uname." at ".$udom.": ".
7516: $tmp."</font>");
7517: } elsif ($tmp=~/error: 2 /) {
7518: #&EXT_cache_set($udom,$uname);
7519: &do_cache_new('userres',$hashid,undef,600);
7520: undef($tmp); # not really an error so don't send it back
7521: }
7522: return $tmp;
7523: }
7524: #----------------------------------------------- resdata - return resource data
7525: # Purpose:
7526: # Return resource data for either users or for a course.
7527: # Parameters:
7528: # $name - Course/user name.
7529: # $domain - Name of the domain the user/course is registered on.
7530: # $type - Type of thing $name is (must be 'course' or 'user'
7531: # @which - Array of names of resources desired.
7532: # Returns:
7533: # The value of the first reasource in @which that is found in the
7534: # resource hash.
7535: # Exceptional Conditions:
7536: # If the $type passed in is not valid (not the string 'course' or
7537: # 'user', an undefined reference is returned.
7538: # If none of the resources are found, an undef is returned
7539: sub resdata {
7540: my ($name,$domain,$type,@which)=@_;
7541: my $result;
7542: if ($type eq 'course') {
7543: $result=&get_courseresdata($name,$domain);
7544: } elsif ($type eq 'user') {
7545: $result=&get_userresdata($name,$domain);
7546: }
7547: if (!ref($result)) { return $result; }
7548: foreach my $item (@which) {
7549: if (defined($result->{$item->[0]})) {
7550: return [$result->{$item->[0]},$item->[1]];
7551: }
7552: }
7553: return undef;
7554: }
7555:
7556: #
7557: # EXT resource caching routines
7558: #
7559:
7560: sub clear_EXT_cache_status {
7561: &delenv('cache.EXT.');
7562: }
7563:
7564: sub EXT_cache_status {
7565: my ($target_domain,$target_user) = @_;
7566: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7567: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
7568: # We know already the user has no data
7569: return 1;
7570: } else {
7571: return 0;
7572: }
7573: }
7574:
7575: sub EXT_cache_set {
7576: my ($target_domain,$target_user) = @_;
7577: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7578: #&appenv({$cachename => time});
7579: }
7580:
7581: # --------------------------------------------------------- Value of a Variable
7582: sub EXT {
7583:
7584: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
7585: unless ($varname) { return ''; }
7586: #get real user name/domain, courseid and symb
7587: my $courseid;
7588: my $publicuser;
7589: if ($symbparm) {
7590: $symbparm=&get_symb_from_alias($symbparm);
7591: }
7592: if (!($uname && $udom)) {
7593: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
7594: if (!$symbparm) { $symbparm=$cursymb; }
7595: } else {
7596: $courseid=$env{'request.course.id'};
7597: }
7598: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
7599: my $rest;
7600: if (defined($therest[0])) {
7601: $rest=join('.',@therest);
7602: } else {
7603: $rest='';
7604: }
7605:
7606: my $qualifierrest=$qualifier;
7607: if ($rest) { $qualifierrest.='.'.$rest; }
7608: my $spacequalifierrest=$space;
7609: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
7610: if ($realm eq 'user') {
7611: # --------------------------------------------------------------- user.resource
7612: if ($space eq 'resource') {
7613: if ( (defined($Apache::lonhomework::parsing_a_problem)
7614: || defined($Apache::lonhomework::parsing_a_task))
7615: &&
7616: ($symbparm eq &symbread()) ) {
7617: # if we are in the middle of processing the resource the
7618: # get the value we are planning on committing
7619: if (defined($Apache::lonhomework::results{$qualifierrest})) {
7620: return $Apache::lonhomework::results{$qualifierrest};
7621: } else {
7622: return $Apache::lonhomework::history{$qualifierrest};
7623: }
7624: } else {
7625: my %restored;
7626: if ($publicuser || $env{'request.state'} eq 'construct') {
7627: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
7628: } else {
7629: %restored=&restore($symbparm,$courseid,$udom,$uname);
7630: }
7631: return $restored{$qualifierrest};
7632: }
7633: # ----------------------------------------------------------------- user.access
7634: } elsif ($space eq 'access') {
7635: # FIXME - not supporting calls for a specific user
7636: return &allowed($qualifier,$rest);
7637: # ------------------------------------------ user.preferences, user.environment
7638: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
7639: if (($uname eq $env{'user.name'}) &&
7640: ($udom eq $env{'user.domain'})) {
7641: return $env{join('.',('environment',$qualifierrest))};
7642: } else {
7643: my %returnhash;
7644: if (!$publicuser) {
7645: %returnhash=&userenvironment($udom,$uname,
7646: $qualifierrest);
7647: }
7648: return $returnhash{$qualifierrest};
7649: }
7650: # ----------------------------------------------------------------- user.course
7651: } elsif ($space eq 'course') {
7652: # FIXME - not supporting calls for a specific user
7653: return $env{join('.',('request.course',$qualifier))};
7654: # ------------------------------------------------------------------- user.role
7655: } elsif ($space eq 'role') {
7656: # FIXME - not supporting calls for a specific user
7657: my ($role,$where)=split(/\./,$env{'request.role'});
7658: if ($qualifier eq 'value') {
7659: return $role;
7660: } elsif ($qualifier eq 'extent') {
7661: return $where;
7662: }
7663: # ----------------------------------------------------------------- user.domain
7664: } elsif ($space eq 'domain') {
7665: return $udom;
7666: # ------------------------------------------------------------------- user.name
7667: } elsif ($space eq 'name') {
7668: return $uname;
7669: # ---------------------------------------------------- Any other user namespace
7670: } else {
7671: my %reply;
7672: if (!$publicuser) {
7673: %reply=&get($space,[$qualifierrest],$udom,$uname);
7674: }
7675: return $reply{$qualifierrest};
7676: }
7677: } elsif ($realm eq 'query') {
7678: # ---------------------------------------------- pull stuff out of query string
7679: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
7680: [$spacequalifierrest]);
7681: return $env{'form.'.$spacequalifierrest};
7682: } elsif ($realm eq 'request') {
7683: # ------------------------------------------------------------- request.browser
7684: if ($space eq 'browser') {
7685: if ($qualifier eq 'textremote') {
7686: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
7687: return 1;
7688: } else {
7689: return 0;
7690: }
7691: } else {
7692: return $env{'browser.'.$qualifier};
7693: }
7694: # ------------------------------------------------------------ request.filename
7695: } else {
7696: return $env{'request.'.$spacequalifierrest};
7697: }
7698: } elsif ($realm eq 'course') {
7699: # ---------------------------------------------------------- course.description
7700: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
7701: } elsif ($realm eq 'resource') {
7702:
7703: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
7704: if (!$symbparm) { $symbparm=&symbread(); }
7705: }
7706:
7707: if ($space eq 'title') {
7708: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
7709: return &gettitle($symbparm);
7710: }
7711:
7712: if ($space eq 'map') {
7713: my ($map) = &decode_symb($symbparm);
7714: return &symbread($map);
7715: }
7716: if ($space eq 'filename') {
7717: if ($symbparm) {
7718: return &clutter((&decode_symb($symbparm))[2]);
7719: }
7720: return &hreflocation('',$env{'request.filename'});
7721: }
7722:
7723: my ($section, $group, @groups);
7724: my ($courselevelm,$courselevel);
7725: if ($symbparm && defined($courseid) &&
7726: $courseid eq $env{'request.course.id'}) {
7727:
7728: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
7729:
7730: # ----------------------------------------------------- Cascading lookup scheme
7731: my $symbp=$symbparm;
7732: my $mapp=&deversion((&decode_symb($symbp))[0]);
7733:
7734: my $symbparm=$symbp.'.'.$spacequalifierrest;
7735: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
7736:
7737: if (($env{'user.name'} eq $uname) &&
7738: ($env{'user.domain'} eq $udom)) {
7739: $section=$env{'request.course.sec'};
7740: @groups = split(/:/,$env{'request.course.groups'});
7741: @groups=&sort_course_groups($courseid,@groups);
7742: } else {
7743: if (! defined($usection)) {
7744: $section=&getsection($udom,$uname,$courseid);
7745: } else {
7746: $section = $usection;
7747: }
7748: @groups = &get_users_groups($udom,$uname,$courseid);
7749: }
7750:
7751: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
7752: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
7753: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
7754:
7755: $courselevel=$courseid.'.'.$spacequalifierrest;
7756: my $courselevelr=$courseid.'.'.$symbparm;
7757: $courselevelm=$courseid.'.'.$mapparm;
7758:
7759: # ----------------------------------------------------------- first, check user
7760:
7761: my $userreply=&resdata($uname,$udom,'user',
7762: ([$courselevelr,'resource'],
7763: [$courselevelm,'map' ],
7764: [$courselevel, 'course' ]));
7765: if (defined($userreply)) { return &get_reply($userreply); }
7766:
7767: # ------------------------------------------------ second, check some of course
7768: my $coursereply;
7769: if (@groups > 0) {
7770: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
7771: $mapparm,$spacequalifierrest);
7772: if (defined($coursereply)) { return &get_reply($coursereply); }
7773: }
7774:
7775: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7776: $env{'course.'.$courseid.'.domain'},
7777: 'course',
7778: ([$seclevelr, 'resource'],
7779: [$seclevelm, 'map' ],
7780: [$seclevel, 'course' ],
7781: [$courselevelr,'resource']));
7782: if (defined($coursereply)) { return &get_reply($coursereply); }
7783:
7784: # ------------------------------------------------------ third, check map parms
7785: my %parmhash=();
7786: my $thisparm='';
7787: if (tie(%parmhash,'GDBM_File',
7788: $env{'request.course.fn'}.'_parms.db',
7789: &GDBM_READER(),0640)) {
7790: $thisparm=$parmhash{$symbparm};
7791: untie(%parmhash);
7792: }
7793: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
7794: }
7795: # ------------------------------------------ fourth, look in resource metadata
7796:
7797: $spacequalifierrest=~s/\./\_/;
7798: my $filename;
7799: if (!$symbparm) { $symbparm=&symbread(); }
7800: if ($symbparm) {
7801: $filename=(&decode_symb($symbparm))[2];
7802: } else {
7803: $filename=$env{'request.filename'};
7804: }
7805: my $metadata=&metadata($filename,$spacequalifierrest);
7806: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7807: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
7808: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7809:
7810: # ---------------------------------------------- fourth, look in rest of course
7811: if ($symbparm && defined($courseid) &&
7812: $courseid eq $env{'request.course.id'}) {
7813: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7814: $env{'course.'.$courseid.'.domain'},
7815: 'course',
7816: ([$courselevelm,'map' ],
7817: [$courselevel, 'course']));
7818: if (defined($coursereply)) { return &get_reply($coursereply); }
7819: }
7820: # ------------------------------------------------------------------ Cascade up
7821: unless ($space eq '0') {
7822: my @parts=split(/_/,$space);
7823: my $id=pop(@parts);
7824: my $part=join('_',@parts);
7825: if ($part eq '') { $part='0'; }
7826: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
7827: $symbparm,$udom,$uname,$section,1);
7828: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
7829: }
7830: if ($recurse) { return undef; }
7831: my $pack_def=&packages_tab_default($filename,$varname);
7832: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
7833: # ---------------------------------------------------- Any other user namespace
7834: } elsif ($realm eq 'environment') {
7835: # ----------------------------------------------------------------- environment
7836: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
7837: return $env{'environment.'.$spacequalifierrest};
7838: } else {
7839: if ($uname eq 'anonymous' && $udom eq '') {
7840: return '';
7841: }
7842: my %returnhash=&userenvironment($udom,$uname,
7843: $spacequalifierrest);
7844: return $returnhash{$spacequalifierrest};
7845: }
7846: } elsif ($realm eq 'system') {
7847: # ----------------------------------------------------------------- system.time
7848: if ($space eq 'time') {
7849: return time;
7850: }
7851: } elsif ($realm eq 'server') {
7852: # ----------------------------------------------------------------- system.time
7853: if ($space eq 'name') {
7854: return $ENV{'SERVER_NAME'};
7855: }
7856: }
7857: return '';
7858: }
7859:
7860: sub get_reply {
7861: my ($reply_value) = @_;
7862: if (ref($reply_value) eq 'ARRAY') {
7863: if (wantarray) {
7864: return @$reply_value;
7865: }
7866: return $reply_value->[0];
7867: } else {
7868: return $reply_value;
7869: }
7870: }
7871:
7872: sub check_group_parms {
7873: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
7874: my @groupitems = ();
7875: my $resultitem;
7876: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
7877: foreach my $group (@{$groups}) {
7878: foreach my $level (@levels) {
7879: my $item = $courseid.'.['.$group.'].'.$level->[0];
7880: push(@groupitems,[$item,$level->[1]]);
7881: }
7882: }
7883: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
7884: $env{'course.'.$courseid.'.domain'},
7885: 'course',@groupitems);
7886: return $coursereply;
7887: }
7888:
7889: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
7890: my ($courseid,@groups) = @_;
7891: @groups = sort(@groups);
7892: return @groups;
7893: }
7894:
7895: sub packages_tab_default {
7896: my ($uri,$varname)=@_;
7897: my (undef,$part,$name)=split(/\./,$varname);
7898:
7899: my (@extension,@specifics,$do_default);
7900: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7901: my ($pack_type,$pack_part)=split(/_/,$package,2);
7902: if ($pack_type eq 'default') {
7903: $do_default=1;
7904: } elsif ($pack_type eq 'extension') {
7905: push(@extension,[$package,$pack_type,$pack_part]);
7906: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7907: # only look at packages defaults for packages that this id is
7908: push(@specifics,[$package,$pack_type,$pack_part]);
7909: }
7910: }
7911: # first look for a package that matches the requested part id
7912: foreach my $package (@specifics) {
7913: my (undef,$pack_type,$pack_part)=@{$package};
7914: next if ($pack_part ne $part);
7915: if (defined($packagetab{"$pack_type&$name&default"})) {
7916: return $packagetab{"$pack_type&$name&default"};
7917: }
7918: }
7919: # look for any possible matching non extension_ package
7920: foreach my $package (@specifics) {
7921: my (undef,$pack_type,$pack_part)=@{$package};
7922: if (defined($packagetab{"$pack_type&$name&default"})) {
7923: return $packagetab{"$pack_type&$name&default"};
7924: }
7925: if ($pack_type eq 'part') { $pack_part='0'; }
7926: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7927: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7928: }
7929: }
7930: # look for any posible extension_ match
7931: foreach my $package (@extension) {
7932: my ($package,$pack_type)=@{$package};
7933: if (defined($packagetab{"$pack_type&$name&default"})) {
7934: return $packagetab{"$pack_type&$name&default"};
7935: }
7936: if (defined($packagetab{$package."&$name&default"})) {
7937: return $packagetab{$package."&$name&default"};
7938: }
7939: }
7940: # look for a global default setting
7941: if ($do_default && defined($packagetab{"default&$name&default"})) {
7942: return $packagetab{"default&$name&default"};
7943: }
7944: return undef;
7945: }
7946:
7947: sub add_prefix_and_part {
7948: my ($prefix,$part)=@_;
7949: my $keyroot;
7950: if (defined($prefix) && $prefix !~ /^__/) {
7951: # prefix that has a part already
7952: $keyroot=$prefix;
7953: } elsif (defined($prefix)) {
7954: # prefix that is missing a part
7955: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7956: } else {
7957: # no prefix at all
7958: if (defined($part)) { $keyroot='_'.$part; }
7959: }
7960: return $keyroot;
7961: }
7962:
7963: # ---------------------------------------------------------------- Get metadata
7964:
7965: my %metaentry;
7966: sub metadata {
7967: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7968: $uri=&declutter($uri);
7969: # if it is a non metadata possible uri return quickly
7970: if (($uri eq '') ||
7971: (($uri =~ m|^/*adm/|) &&
7972: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7973: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7974: return undef;
7975: }
7976: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7977: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7978: return undef;
7979: }
7980: my $filename=$uri;
7981: $uri=~s/\.meta$//;
7982: #
7983: # Is the metadata already cached?
7984: # Look at timestamp of caching
7985: # Everything is cached by the main uri, libraries are never directly cached
7986: #
7987: if (!defined($liburi)) {
7988: my ($result,$cached)=&is_cached_new('meta',$uri);
7989: if (defined($cached)) { return $result->{':'.$what}; }
7990: }
7991: {
7992: #
7993: # Is this a recursive call for a library?
7994: #
7995: # if (! exists($metacache{$uri})) {
7996: # $metacache{$uri}={};
7997: # }
7998: my $cachetime = 60*60;
7999: if ($liburi) {
8000: $liburi=&declutter($liburi);
8001: $filename=$liburi;
8002: } else {
8003: &devalidate_cache_new('meta',$uri);
8004: undef(%metaentry);
8005: }
8006: my %metathesekeys=();
8007: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8008: my $metastring;
8009: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8010: my $which = &hreflocation('','/'.($liburi || $uri));
8011: $metastring =
8012: &Apache::lonnet::ssi_body($which,
8013: ('grade_target' => 'meta'));
8014: $cachetime = 1; # only want this cached in the child not long term
8015: } elsif ($uri !~ m -^(editupload)/-) {
8016: my $file=&filelocation('',&clutter($filename));
8017: #push(@{$metaentry{$uri.'.file'}},$file);
8018: $metastring=&getfile($file);
8019: }
8020: my $parser=HTML::LCParser->new(\$metastring);
8021: my $token;
8022: undef %metathesekeys;
8023: while ($token=$parser->get_token) {
8024: if ($token->[0] eq 'S') {
8025: if (defined($token->[2]->{'package'})) {
8026: #
8027: # This is a package - get package info
8028: #
8029: my $package=$token->[2]->{'package'};
8030: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8031: if (defined($token->[2]->{'id'})) {
8032: $keyroot.='_'.$token->[2]->{'id'};
8033: }
8034: if ($metaentry{':packages'}) {
8035: $metaentry{':packages'}.=','.$package.$keyroot;
8036: } else {
8037: $metaentry{':packages'}=$package.$keyroot;
8038: }
8039: foreach my $pack_entry (keys(%packagetab)) {
8040: my $part=$keyroot;
8041: $part=~s/^\_//;
8042: if ($pack_entry=~/^\Q$package\E\&/ ||
8043: $pack_entry=~/^\Q$package\E_0\&/) {
8044: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8045: # ignore package.tab specified default values
8046: # here &package_tab_default() will fetch those
8047: if ($subp eq 'default') { next; }
8048: my $value=$packagetab{$pack_entry};
8049: my $unikey;
8050: if ($pack =~ /_0$/) {
8051: $unikey='parameter_0_'.$name;
8052: $part=0;
8053: } else {
8054: $unikey='parameter'.$keyroot.'_'.$name;
8055: }
8056: if ($subp eq 'display') {
8057: $value.=' [Part: '.$part.']';
8058: }
8059: $metaentry{':'.$unikey.'.part'}=$part;
8060: $metathesekeys{$unikey}=1;
8061: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8062: $metaentry{':'.$unikey.'.'.$subp}=$value;
8063: }
8064: if (defined($metaentry{':'.$unikey.'.default'})) {
8065: $metaentry{':'.$unikey}=
8066: $metaentry{':'.$unikey.'.default'};
8067: }
8068: }
8069: }
8070: } else {
8071: #
8072: # This is not a package - some other kind of start tag
8073: #
8074: my $entry=$token->[1];
8075: my $unikey;
8076: if ($entry eq 'import') {
8077: $unikey='';
8078: } else {
8079: $unikey=$entry;
8080: }
8081: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8082:
8083: if (defined($token->[2]->{'id'})) {
8084: $unikey.='_'.$token->[2]->{'id'};
8085: }
8086:
8087: if ($entry eq 'import') {
8088: #
8089: # Importing a library here
8090: #
8091: if ($depthcount<20) {
8092: my $location=$parser->get_text('/import');
8093: my $dir=$filename;
8094: $dir=~s|[^/]*$||;
8095: $location=&filelocation($dir,$location);
8096: my $metadata =
8097: &metadata($uri,'keys', $location,$unikey,
8098: $depthcount+1);
8099: foreach my $meta (split(',',$metadata)) {
8100: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8101: $metathesekeys{$meta}=1;
8102: }
8103: }
8104: } else {
8105:
8106: if (defined($token->[2]->{'name'})) {
8107: $unikey.='_'.$token->[2]->{'name'};
8108: }
8109: $metathesekeys{$unikey}=1;
8110: foreach my $param (@{$token->[3]}) {
8111: $metaentry{':'.$unikey.'.'.$param} =
8112: $token->[2]->{$param};
8113: }
8114: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8115: my $default=$metaentry{':'.$unikey.'.default'};
8116: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8117: # only ws inside the tag, and not in default, so use default
8118: # as value
8119: $metaentry{':'.$unikey}=$default;
8120: } elsif ( $internaltext =~ /\S/ ) {
8121: # something interesting inside the tag
8122: $metaentry{':'.$unikey}=$internaltext;
8123: } else {
8124: # no interesting values, don't set a default
8125: }
8126: # end of not-a-package not-a-library import
8127: }
8128: # end of not-a-package start tag
8129: }
8130: # the next is the end of "start tag"
8131: }
8132: }
8133: my ($extension) = ($uri =~ /\.(\w+)$/);
8134: $extension = lc($extension);
8135: if ($extension eq 'htm') { $extension='html'; }
8136:
8137: foreach my $key (keys(%packagetab)) {
8138: #no specific packages #how's our extension
8139: if ($key!~/^extension_\Q$extension\E&/) { next; }
8140: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8141: \%metathesekeys);
8142: }
8143:
8144: if (!exists($metaentry{':packages'})
8145: || $packagetab{"import_defaults&extension_$extension"}) {
8146: foreach my $key (keys(%packagetab)) {
8147: #no specific packages well let's get default then
8148: if ($key!~/^default&/) { next; }
8149: &metadata_create_package_def($uri,$key,'default',
8150: \%metathesekeys);
8151: }
8152: }
8153: # are there custom rights to evaluate
8154: if ($metaentry{':copyright'} eq 'custom') {
8155:
8156: #
8157: # Importing a rights file here
8158: #
8159: unless ($depthcount) {
8160: my $location=$metaentry{':customdistributionfile'};
8161: my $dir=$filename;
8162: $dir=~s|[^/]*$||;
8163: $location=&filelocation($dir,$location);
8164: my $rights_metadata =
8165: &metadata($uri,'keys',$location,'_rights',
8166: $depthcount+1);
8167: foreach my $rights (split(',',$rights_metadata)) {
8168: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8169: $metathesekeys{$rights}=1;
8170: }
8171: }
8172: }
8173: # uniqifiy package listing
8174: my %seen;
8175: my @uniq_packages =
8176: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8177: $metaentry{':packages'} = join(',',@uniq_packages);
8178:
8179: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8180: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8181: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8182: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8183: # this is the end of "was not already recently cached
8184: }
8185: return $metaentry{':'.$what};
8186: }
8187:
8188: sub metadata_create_package_def {
8189: my ($uri,$key,$package,$metathesekeys)=@_;
8190: my ($pack,$name,$subp)=split(/\&/,$key);
8191: if ($subp eq 'default') { next; }
8192:
8193: if (defined($metaentry{':packages'})) {
8194: $metaentry{':packages'}.=','.$package;
8195: } else {
8196: $metaentry{':packages'}=$package;
8197: }
8198: my $value=$packagetab{$key};
8199: my $unikey;
8200: $unikey='parameter_0_'.$name;
8201: $metaentry{':'.$unikey.'.part'}=0;
8202: $$metathesekeys{$unikey}=1;
8203: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8204: $metaentry{':'.$unikey.'.'.$subp}=$value;
8205: }
8206: if (defined($metaentry{':'.$unikey.'.default'})) {
8207: $metaentry{':'.$unikey}=
8208: $metaentry{':'.$unikey.'.default'};
8209: }
8210: }
8211:
8212: sub metadata_generate_part0 {
8213: my ($metadata,$metacache,$uri) = @_;
8214: my %allnames;
8215: foreach my $metakey (keys(%$metadata)) {
8216: if ($metakey=~/^parameter\_(.*)/) {
8217: my $part=$$metacache{':'.$metakey.'.part'};
8218: my $name=$$metacache{':'.$metakey.'.name'};
8219: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8220: $allnames{$name}=$part;
8221: }
8222: }
8223: }
8224: foreach my $name (keys(%allnames)) {
8225: $$metadata{"parameter_0_$name"}=1;
8226: my $key=":parameter_0_$name";
8227: $$metacache{"$key.part"}='0';
8228: $$metacache{"$key.name"}=$name;
8229: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8230: $allnames{$name}.'_'.$name.
8231: '.type'};
8232: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8233: '.display'};
8234: my $expr='[Part: '.$allnames{$name}.']';
8235: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8236: $$metacache{"$key.display"}=$olddis;
8237: }
8238: }
8239:
8240: # ------------------------------------------------------ Devalidate title cache
8241:
8242: sub devalidate_title_cache {
8243: my ($url)=@_;
8244: if (!$env{'request.course.id'}) { return; }
8245: my $symb=&symbread($url);
8246: if (!$symb) { return; }
8247: my $key=$env{'request.course.id'}."\0".$symb;
8248: &devalidate_cache_new('title',$key);
8249: }
8250:
8251: # ------------------------------------------------- Get the title of a course
8252:
8253: sub current_course_title {
8254: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8255: }
8256: # ------------------------------------------------- Get the title of a resource
8257:
8258: sub gettitle {
8259: my $urlsymb=shift;
8260: my $symb=&symbread($urlsymb);
8261: if ($symb) {
8262: my $key=$env{'request.course.id'}."\0".$symb;
8263: my ($result,$cached)=&is_cached_new('title',$key);
8264: if (defined($cached)) {
8265: return $result;
8266: }
8267: my ($map,$resid,$url)=&decode_symb($symb);
8268: my $title='';
8269: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8270: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8271: } else {
8272: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8273: &GDBM_READER(),0640)) {
8274: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8275: $title=$bighash{'title_'.$mapid.'.'.$resid};
8276: untie(%bighash);
8277: }
8278: }
8279: $title=~s/\&colon\;/\:/gs;
8280: if ($title) {
8281: return &do_cache_new('title',$key,$title,600);
8282: }
8283: $urlsymb=$url;
8284: }
8285: my $title=&metadata($urlsymb,'title');
8286: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8287: return $title;
8288: }
8289:
8290: sub get_slot {
8291: my ($which,$cnum,$cdom)=@_;
8292: if (!$cnum || !$cdom) {
8293: (undef,my $courseid)=&whichuser();
8294: $cdom=$env{'course.'.$courseid.'.domain'};
8295: $cnum=$env{'course.'.$courseid.'.num'};
8296: }
8297: my $key=join("\0",'slots',$cdom,$cnum,$which);
8298: my %slotinfo;
8299: if (exists($remembered{$key})) {
8300: $slotinfo{$which} = $remembered{$key};
8301: } else {
8302: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8303: &Apache::lonhomework::showhash(%slotinfo);
8304: my ($tmp)=keys(%slotinfo);
8305: if ($tmp=~/^error:/) { return (); }
8306: $remembered{$key} = $slotinfo{$which};
8307: }
8308: if (ref($slotinfo{$which}) eq 'HASH') {
8309: return %{$slotinfo{$which}};
8310: }
8311: return $slotinfo{$which};
8312: }
8313: # ------------------------------------------------- Update symbolic store links
8314:
8315: sub symblist {
8316: my ($mapname,%newhash)=@_;
8317: $mapname=&deversion(&declutter($mapname));
8318: my %hash;
8319: if (($env{'request.course.fn'}) && (%newhash)) {
8320: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8321: &GDBM_WRCREAT(),0640)) {
8322: foreach my $url (keys(%newhash)) {
8323: next if ($url eq 'last_known'
8324: && $env{'form.no_update_last_known'});
8325: $hash{declutter($url)}=&encode_symb($mapname,
8326: $newhash{$url}->[1],
8327: $newhash{$url}->[0]);
8328: }
8329: if (untie(%hash)) {
8330: return 'ok';
8331: }
8332: }
8333: }
8334: return 'error';
8335: }
8336:
8337: # --------------------------------------------------------------- Verify a symb
8338:
8339: sub symbverify {
8340: my ($symb,$thisurl)=@_;
8341: my $thisfn=$thisurl;
8342: $thisfn=&declutter($thisfn);
8343: # direct jump to resource in page or to a sequence - will construct own symbs
8344: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8345: # check URL part
8346: my ($map,$resid,$url)=&decode_symb($symb);
8347:
8348: unless ($url eq $thisfn) { return 0; }
8349:
8350: $symb=&symbclean($symb);
8351: $thisurl=&deversion($thisurl);
8352: $thisfn=&deversion($thisfn);
8353:
8354: my %bighash;
8355: my $okay=0;
8356:
8357: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8358: &GDBM_READER(),0640)) {
8359: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8360: $thisurl =~ s/\?.+$//;
8361: }
8362: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8363: unless ($ids) {
8364: $ids=$bighash{'ids_/'.$thisurl};
8365: }
8366: if ($ids) {
8367: # ------------------------------------------------------------------- Has ID(s)
8368: foreach my $id (split(/\,/,$ids)) {
8369: my ($mapid,$resid)=split(/\./,$id);
8370: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8371: $symb =~ s/\?.+$//;
8372: }
8373: if (
8374: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8375: eq $symb) {
8376: if (($env{'request.role.adv'}) ||
8377: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8378: $okay=1;
8379: }
8380: }
8381: }
8382: }
8383: untie(%bighash);
8384: }
8385: return $okay;
8386: }
8387:
8388: # --------------------------------------------------------------- Clean-up symb
8389:
8390: sub symbclean {
8391: my $symb=shift;
8392: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8393: # remove version from map
8394: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8395:
8396: # remove version from URL
8397: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8398:
8399: # remove wrapper
8400:
8401: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8402: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8403: return $symb;
8404: }
8405:
8406: # ---------------------------------------------- Split symb to find map and url
8407:
8408: sub encode_symb {
8409: my ($map,$resid,$url)=@_;
8410: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8411: }
8412:
8413: sub decode_symb {
8414: my $symb=shift;
8415: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8416: my ($map,$resid,$url)=split(/___/,$symb);
8417: return (&fixversion($map),$resid,&fixversion($url));
8418: }
8419:
8420: sub fixversion {
8421: my $fn=shift;
8422: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8423: my %bighash;
8424: my $uri=&clutter($fn);
8425: my $key=$env{'request.course.id'}.'_'.$uri;
8426: # is this cached?
8427: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8428: if (defined($cached)) { return $result; }
8429: # unfortunately not cached, or expired
8430: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8431: &GDBM_READER(),0640)) {
8432: if ($bighash{'version_'.$uri}) {
8433: my $version=$bighash{'version_'.$uri};
8434: unless (($version eq 'mostrecent') ||
8435: ($version==&getversion($uri))) {
8436: $uri=~s/\.(\w+)$/\.$version\.$1/;
8437: }
8438: }
8439: untie %bighash;
8440: }
8441: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8442: }
8443:
8444: sub deversion {
8445: my $url=shift;
8446: $url=~s/\.\d+\.(\w+)$/\.$1/;
8447: return $url;
8448: }
8449:
8450: # ------------------------------------------------------ Return symb list entry
8451:
8452: sub symbread {
8453: my ($thisfn,$donotrecurse)=@_;
8454: my $cache_str='request.symbread.cached.'.$thisfn;
8455: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8456: # no filename provided? try from environment
8457: unless ($thisfn) {
8458: if ($env{'request.symb'}) {
8459: return $env{$cache_str}=&symbclean($env{'request.symb'});
8460: }
8461: $thisfn=$env{'request.filename'};
8462: }
8463: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8464: # is that filename actually a symb? Verify, clean, and return
8465: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
8466: if (&symbverify($thisfn,$1)) {
8467: return $env{$cache_str}=&symbclean($thisfn);
8468: }
8469: }
8470: $thisfn=declutter($thisfn);
8471: my %hash;
8472: my %bighash;
8473: my $syval='';
8474: if (($env{'request.course.fn'}) && ($thisfn)) {
8475: my $targetfn = $thisfn;
8476: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
8477: $targetfn = 'adm/wrapper/'.$thisfn;
8478: }
8479: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8480: $targetfn=$1;
8481: }
8482: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8483: &GDBM_READER(),0640)) {
8484: $syval=$hash{$targetfn};
8485: untie(%hash);
8486: }
8487: # ---------------------------------------------------------- There was an entry
8488: if ($syval) {
8489: #unless ($syval=~/\_\d+$/) {
8490: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8491: #&appenv({'request.ambiguous' => $thisfn});
8492: #return $env{$cache_str}='';
8493: #}
8494: #$syval.=$1;
8495: #}
8496: } else {
8497: # ------------------------------------------------------- Was not in symb table
8498: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8499: &GDBM_READER(),0640)) {
8500: # ---------------------------------------------- Get ID(s) for current resource
8501: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8502: unless ($ids) {
8503: $ids=$bighash{'ids_/'.$thisfn};
8504: }
8505: unless ($ids) {
8506: # alias?
8507: $ids=$bighash{'mapalias_'.$thisfn};
8508: }
8509: if ($ids) {
8510: # ------------------------------------------------------------------- Has ID(s)
8511: my @possibilities=split(/\,/,$ids);
8512: if ($#possibilities==0) {
8513: # ----------------------------------------------- There is only one possibility
8514: my ($mapid,$resid)=split(/\./,$ids);
8515: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8516: $resid,$thisfn);
8517: } elsif (!$donotrecurse) {
8518: # ------------------------------------------ There is more than one possibility
8519: my $realpossible=0;
8520: foreach my $id (@possibilities) {
8521: my $file=$bighash{'src_'.$id};
8522: if (&allowed('bre',$file)) {
8523: my ($mapid,$resid)=split(/\./,$id);
8524: if ($bighash{'map_type_'.$mapid} ne 'page') {
8525: $realpossible++;
8526: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8527: $resid,$thisfn);
8528: }
8529: }
8530: }
8531: if ($realpossible!=1) { $syval=''; }
8532: } else {
8533: $syval='';
8534: }
8535: }
8536: untie(%bighash)
8537: }
8538: }
8539: if ($syval) {
8540: return $env{$cache_str}=$syval;
8541: }
8542: }
8543: &appenv({'request.ambiguous' => $thisfn});
8544: return $env{$cache_str}='';
8545: }
8546:
8547: # ---------------------------------------------------------- Return random seed
8548:
8549: sub numval {
8550: my $txt=shift;
8551: $txt=~tr/A-J/0-9/;
8552: $txt=~tr/a-j/0-9/;
8553: $txt=~tr/K-T/0-9/;
8554: $txt=~tr/k-t/0-9/;
8555: $txt=~tr/U-Z/0-5/;
8556: $txt=~tr/u-z/0-5/;
8557: $txt=~s/\D//g;
8558: if ($_64bit) { if ($txt > 2**32) { return -1; } }
8559: return int($txt);
8560: }
8561:
8562: sub numval2 {
8563: my $txt=shift;
8564: $txt=~tr/A-J/0-9/;
8565: $txt=~tr/a-j/0-9/;
8566: $txt=~tr/K-T/0-9/;
8567: $txt=~tr/k-t/0-9/;
8568: $txt=~tr/U-Z/0-5/;
8569: $txt=~tr/u-z/0-5/;
8570: $txt=~s/\D//g;
8571: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8572: my $total;
8573: foreach my $val (@txts) { $total+=$val; }
8574: if ($_64bit) { if ($total > 2**32) { return -1; } }
8575: return int($total);
8576: }
8577:
8578: sub numval3 {
8579: use integer;
8580: my $txt=shift;
8581: $txt=~tr/A-J/0-9/;
8582: $txt=~tr/a-j/0-9/;
8583: $txt=~tr/K-T/0-9/;
8584: $txt=~tr/k-t/0-9/;
8585: $txt=~tr/U-Z/0-5/;
8586: $txt=~tr/u-z/0-5/;
8587: $txt=~s/\D//g;
8588: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8589: my $total;
8590: foreach my $val (@txts) { $total+=$val; }
8591: if ($_64bit) { $total=(($total<<32)>>32); }
8592: return $total;
8593: }
8594:
8595: sub digest {
8596: my ($data)=@_;
8597: my $digest=&Digest::MD5::md5($data);
8598: my ($a,$b,$c,$d)=unpack("iiii",$digest);
8599: my ($e,$f);
8600: {
8601: use integer;
8602: $e=($a+$b);
8603: $f=($c+$d);
8604: if ($_64bit) {
8605: $e=(($e<<32)>>32);
8606: $f=(($f<<32)>>32);
8607: }
8608: }
8609: if (wantarray) {
8610: return ($e,$f);
8611: } else {
8612: my $g;
8613: {
8614: use integer;
8615: $g=($e+$f);
8616: if ($_64bit) {
8617: $g=(($g<<32)>>32);
8618: }
8619: }
8620: return $g;
8621: }
8622: }
8623:
8624: sub latest_rnd_algorithm_id {
8625: return '64bit5';
8626: }
8627:
8628: sub get_rand_alg {
8629: my ($courseid)=@_;
8630: if (!$courseid) { $courseid=(&whichuser())[1]; }
8631: if ($courseid) {
8632: return $env{"course.$courseid.rndseed"};
8633: }
8634: return &latest_rnd_algorithm_id();
8635: }
8636:
8637: sub validCODE {
8638: my ($CODE)=@_;
8639: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
8640: return 0;
8641: }
8642:
8643: sub getCODE {
8644: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
8645: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
8646: defined($Apache::lonhomework::parsing_a_task) ) &&
8647: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
8648: return $Apache::lonhomework::history{'resource.CODE'};
8649: }
8650: return undef;
8651: }
8652:
8653: sub rndseed {
8654: my ($symb,$courseid,$domain,$username)=@_;
8655: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
8656: if (!defined($symb)) {
8657: unless ($symb=$wsymb) { return time; }
8658: }
8659: if (!$courseid) { $courseid=$wcourseid; }
8660: if (!$domain) { $domain=$wdomain; }
8661: if (!$username) { $username=$wusername }
8662: my $which=&get_rand_alg();
8663:
8664: if (defined(&getCODE())) {
8665: if ($which eq '64bit5') {
8666: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
8667: } elsif ($which eq '64bit4') {
8668: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
8669: } else {
8670: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
8671: }
8672: } elsif ($which eq '64bit5') {
8673: return &rndseed_64bit5($symb,$courseid,$domain,$username);
8674: } elsif ($which eq '64bit4') {
8675: return &rndseed_64bit4($symb,$courseid,$domain,$username);
8676: } elsif ($which eq '64bit3') {
8677: return &rndseed_64bit3($symb,$courseid,$domain,$username);
8678: } elsif ($which eq '64bit2') {
8679: return &rndseed_64bit2($symb,$courseid,$domain,$username);
8680: } elsif ($which eq '64bit') {
8681: return &rndseed_64bit($symb,$courseid,$domain,$username);
8682: }
8683: return &rndseed_32bit($symb,$courseid,$domain,$username);
8684: }
8685:
8686: sub rndseed_32bit {
8687: my ($symb,$courseid,$domain,$username)=@_;
8688: {
8689: use integer;
8690: my $symbchck=unpack("%32C*",$symb) << 27;
8691: my $symbseed=numval($symb) << 22;
8692: my $namechck=unpack("%32C*",$username) << 17;
8693: my $nameseed=numval($username) << 12;
8694: my $domainseed=unpack("%32C*",$domain) << 7;
8695: my $courseseed=unpack("%32C*",$courseid);
8696: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
8697: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8698: #&logthis("rndseed :$num:$symb");
8699: if ($_64bit) { $num=(($num<<32)>>32); }
8700: return $num;
8701: }
8702: }
8703:
8704: sub rndseed_64bit {
8705: my ($symb,$courseid,$domain,$username)=@_;
8706: {
8707: use integer;
8708: my $symbchck=unpack("%32S*",$symb) << 21;
8709: my $symbseed=numval($symb) << 10;
8710: my $namechck=unpack("%32S*",$username);
8711:
8712: my $nameseed=numval($username) << 21;
8713: my $domainseed=unpack("%32S*",$domain) << 10;
8714: my $courseseed=unpack("%32S*",$courseid);
8715:
8716: my $num1=$symbchck+$symbseed+$namechck;
8717: my $num2=$nameseed+$domainseed+$courseseed;
8718: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8719: #&logthis("rndseed :$num:$symb");
8720: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8721: return "$num1,$num2";
8722: }
8723: }
8724:
8725: sub rndseed_64bit2 {
8726: my ($symb,$courseid,$domain,$username)=@_;
8727: {
8728: use integer;
8729: # strings need to be an even # of cahracters long, it it is odd the
8730: # last characters gets thrown away
8731: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8732: my $symbseed=numval($symb) << 10;
8733: my $namechck=unpack("%32S*",$username.' ');
8734:
8735: my $nameseed=numval($username) << 21;
8736: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8737: my $courseseed=unpack("%32S*",$courseid.' ');
8738:
8739: my $num1=$symbchck+$symbseed+$namechck;
8740: my $num2=$nameseed+$domainseed+$courseseed;
8741: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8742: #&logthis("rndseed :$num:$symb");
8743: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8744: return "$num1,$num2";
8745: }
8746: }
8747:
8748: sub rndseed_64bit3 {
8749: my ($symb,$courseid,$domain,$username)=@_;
8750: {
8751: use integer;
8752: # strings need to be an even # of cahracters long, it it is odd the
8753: # last characters gets thrown away
8754: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8755: my $symbseed=numval2($symb) << 10;
8756: my $namechck=unpack("%32S*",$username.' ');
8757:
8758: my $nameseed=numval2($username) << 21;
8759: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8760: my $courseseed=unpack("%32S*",$courseid.' ');
8761:
8762: my $num1=$symbchck+$symbseed+$namechck;
8763: my $num2=$nameseed+$domainseed+$courseseed;
8764: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8765: #&logthis("rndseed :$num1:$num2:$_64bit");
8766: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8767:
8768: return "$num1:$num2";
8769: }
8770: }
8771:
8772: sub rndseed_64bit4 {
8773: my ($symb,$courseid,$domain,$username)=@_;
8774: {
8775: use integer;
8776: # strings need to be an even # of cahracters long, it it is odd the
8777: # last characters gets thrown away
8778: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8779: my $symbseed=numval3($symb) << 10;
8780: my $namechck=unpack("%32S*",$username.' ');
8781:
8782: my $nameseed=numval3($username) << 21;
8783: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8784: my $courseseed=unpack("%32S*",$courseid.' ');
8785:
8786: my $num1=$symbchck+$symbseed+$namechck;
8787: my $num2=$nameseed+$domainseed+$courseseed;
8788: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8789: #&logthis("rndseed :$num1:$num2:$_64bit");
8790: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8791:
8792: return "$num1:$num2";
8793: }
8794: }
8795:
8796: sub rndseed_64bit5 {
8797: my ($symb,$courseid,$domain,$username)=@_;
8798: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
8799: return "$num1:$num2";
8800: }
8801:
8802: sub rndseed_CODE_64bit {
8803: my ($symb,$courseid,$domain,$username)=@_;
8804: {
8805: use integer;
8806: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8807: my $symbseed=numval2($symb);
8808: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8809: my $CODEseed=numval(&getCODE());
8810: my $courseseed=unpack("%32S*",$courseid.' ');
8811: my $num1=$symbseed+$CODEchck;
8812: my $num2=$CODEseed+$courseseed+$symbchck;
8813: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8814: #&logthis("rndseed :$num1:$num2:$symb");
8815: if ($_64bit) { $num1=(($num1<<32)>>32); }
8816: if ($_64bit) { $num2=(($num2<<32)>>32); }
8817: return "$num1:$num2";
8818: }
8819: }
8820:
8821: sub rndseed_CODE_64bit4 {
8822: my ($symb,$courseid,$domain,$username)=@_;
8823: {
8824: use integer;
8825: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8826: my $symbseed=numval3($symb);
8827: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8828: my $CODEseed=numval3(&getCODE());
8829: my $courseseed=unpack("%32S*",$courseid.' ');
8830: my $num1=$symbseed+$CODEchck;
8831: my $num2=$CODEseed+$courseseed+$symbchck;
8832: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8833: #&logthis("rndseed :$num1:$num2:$symb");
8834: if ($_64bit) { $num1=(($num1<<32)>>32); }
8835: if ($_64bit) { $num2=(($num2<<32)>>32); }
8836: return "$num1:$num2";
8837: }
8838: }
8839:
8840: sub rndseed_CODE_64bit5 {
8841: my ($symb,$courseid,$domain,$username)=@_;
8842: my $code = &getCODE();
8843: my ($num1,$num2)=&digest("$symb,$courseid,$code");
8844: return "$num1:$num2";
8845: }
8846:
8847: sub setup_random_from_rndseed {
8848: my ($rndseed)=@_;
8849: if ($rndseed =~/([,:])/) {
8850: my ($num1,$num2)=split(/[,:]/,$rndseed);
8851: &Math::Random::random_set_seed(abs($num1),abs($num2));
8852: } else {
8853: &Math::Random::random_set_seed_from_phrase($rndseed);
8854: }
8855: }
8856:
8857: sub latest_receipt_algorithm_id {
8858: return 'receipt3';
8859: }
8860:
8861: sub recunique {
8862: my $fucourseid=shift;
8863: my $unique;
8864: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
8865: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8866: $unique=$env{"course.$fucourseid.internal.encseed"};
8867: } else {
8868: $unique=$perlvar{'lonReceipt'};
8869: }
8870: return unpack("%32C*",$unique);
8871: }
8872:
8873: sub recprefix {
8874: my $fucourseid=shift;
8875: my $prefix;
8876: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
8877: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8878: $prefix=$env{"course.$fucourseid.internal.encpref"};
8879: } else {
8880: $prefix=$perlvar{'lonHostID'};
8881: }
8882: return unpack("%32C*",$prefix);
8883: }
8884:
8885: sub ireceipt {
8886: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
8887:
8888: my $return =&recprefix($fucourseid).'-';
8889:
8890: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
8891: $env{'request.state'} eq 'construct') {
8892: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
8893: return $return;
8894: }
8895:
8896: my $cuname=unpack("%32C*",$funame);
8897: my $cudom=unpack("%32C*",$fudom);
8898: my $cucourseid=unpack("%32C*",$fucourseid);
8899: my $cusymb=unpack("%32C*",$fusymb);
8900: my $cunique=&recunique($fucourseid);
8901: my $cpart=unpack("%32S*",$part);
8902: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8903:
8904: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8905:
8906: $return.= ($cunique%$cuname+
8907: $cunique%$cudom+
8908: $cusymb%$cuname+
8909: $cusymb%$cudom+
8910: $cucourseid%$cuname+
8911: $cucourseid%$cudom+
8912: $cpart%$cuname+
8913: $cpart%$cudom);
8914: } else {
8915: $return.= ($cunique%$cuname+
8916: $cunique%$cudom+
8917: $cusymb%$cuname+
8918: $cusymb%$cudom+
8919: $cucourseid%$cuname+
8920: $cucourseid%$cudom);
8921: }
8922: return $return;
8923: }
8924:
8925: sub receipt {
8926: my ($part)=@_;
8927: my ($symb,$courseid,$domain,$name) = &whichuser();
8928: return &ireceipt($name,$domain,$courseid,$symb,$part);
8929: }
8930:
8931: sub whichuser {
8932: my ($passedsymb)=@_;
8933: my ($symb,$courseid,$domain,$name,$publicuser);
8934: if (defined($env{'form.grade_symb'})) {
8935: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8936: my $allowed=&allowed('vgr',$tmp_courseid);
8937: if (!$allowed &&
8938: exists($env{'request.course.sec'}) &&
8939: $env{'request.course.sec'} !~ /^\s*$/) {
8940: $allowed=&allowed('vgr',$tmp_courseid.
8941: '/'.$env{'request.course.sec'});
8942: }
8943: if ($allowed) {
8944: ($symb)=&get_env_multiple('form.grade_symb');
8945: $courseid=$tmp_courseid;
8946: ($domain)=&get_env_multiple('form.grade_domain');
8947: ($name)=&get_env_multiple('form.grade_username');
8948: return ($symb,$courseid,$domain,$name,$publicuser);
8949: }
8950: }
8951: if (!$passedsymb) {
8952: $symb=&symbread();
8953: } else {
8954: $symb=$passedsymb;
8955: }
8956: $courseid=$env{'request.course.id'};
8957: $domain=$env{'user.domain'};
8958: $name=$env{'user.name'};
8959: if ($name eq 'public' && $domain eq 'public') {
8960: if (!defined($env{'form.username'})) {
8961: $env{'form.username'}.=time.rand(10000000);
8962: }
8963: $name.=$env{'form.username'};
8964: }
8965: return ($symb,$courseid,$domain,$name,$publicuser);
8966:
8967: }
8968:
8969: # ------------------------------------------------------------ Serves up a file
8970: # returns either the contents of the file or
8971: # -1 if the file doesn't exist
8972: #
8973: # if the target is a file that was uploaded via DOCS,
8974: # a check will be made to see if a current copy exists on the local server,
8975: # if it does this will be served, otherwise a copy will be retrieved from
8976: # the home server for the course and stored in /home/httpd/html/userfiles on
8977: # the local server.
8978:
8979: sub getfile {
8980: my ($file) = @_;
8981: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8982: &repcopy($file);
8983: return &readfile($file);
8984: }
8985:
8986: sub repcopy_userfile {
8987: my ($file)=@_;
8988: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8989: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8990: my ($cdom,$cnum,$filename) =
8991: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8992: my $uri="/uploaded/$cdom/$cnum/$filename";
8993: if (-e "$file") {
8994: # we already have a local copy, check it out
8995: my @fileinfo = stat($file);
8996: my $rtncode;
8997: my $info;
8998: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8999: if ($lwpresp ne 'ok') {
9000: # there is no such file anymore, even though we had a local copy
9001: if ($rtncode eq '404') {
9002: unlink($file);
9003: }
9004: return -1;
9005: }
9006: if ($info < $fileinfo[9]) {
9007: # nice, the file we have is up-to-date, just say okay
9008: return 'ok';
9009: } else {
9010: # the file is outdated, get rid of it
9011: unlink($file);
9012: }
9013: }
9014: # one way or the other, at this point, we don't have the file
9015: # construct the correct path for the file
9016: my @parts = ($cdom,$cnum);
9017: if ($filename =~ m|^(.+)/[^/]+$|) {
9018: push @parts, split(/\//,$1);
9019: }
9020: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9021: foreach my $part (@parts) {
9022: $path .= '/'.$part;
9023: if (!-e $path) {
9024: mkdir($path,0770);
9025: }
9026: }
9027: # now the path exists for sure
9028: # get a user agent
9029: my $ua=new LWP::UserAgent;
9030: my $transferfile=$file.'.in.transfer';
9031: # FIXME: this should flock
9032: if (-e $transferfile) { return 'ok'; }
9033: my $request;
9034: $uri=~s/^\///;
9035: my $homeserver = &homeserver($cnum,$cdom);
9036: my $protocol = $protocol{$homeserver};
9037: $protocol = 'http' if ($protocol ne 'https');
9038: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9039: my $response=$ua->request($request,$transferfile);
9040: # did it work?
9041: if ($response->is_error()) {
9042: unlink($transferfile);
9043: &logthis("Userfile repcopy failed for $uri");
9044: return -1;
9045: }
9046: # worked, rename the transfer file
9047: rename($transferfile,$file);
9048: return 'ok';
9049: }
9050:
9051: sub tokenwrapper {
9052: my $uri=shift;
9053: $uri=~s|^https?\://([^/]+)||;
9054: $uri=~s|^/||;
9055: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9056: my $token=$1;
9057: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9058: if ($udom && $uname && $file) {
9059: $file=~s|(\?\.*)*$||;
9060: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9061: my $homeserver = &homeserver($uname,$udom);
9062: my $protocol = $protocol{$homeserver};
9063: $protocol = 'http' if ($protocol ne 'https');
9064: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9065: (($uri=~/\?/)?'&':'?').'token='.$token.
9066: '&tokenissued='.$perlvar{'lonHostID'};
9067: } else {
9068: return '/adm/notfound.html';
9069: }
9070: }
9071:
9072: # call with reqtype HEAD: get last modification time
9073: # call with reqtype GET: get the file contents
9074: # Do not call this with reqtype GET for large files! It loads everything into memory
9075: #
9076: sub getuploaded {
9077: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9078: $uri=~s/^\///;
9079: my $homeserver = &homeserver($cnum,$cdom);
9080: my $protocol = $protocol{$homeserver};
9081: $protocol = 'http' if ($protocol ne 'https');
9082: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9083: my $ua=new LWP::UserAgent;
9084: my $request=new HTTP::Request($reqtype,$uri);
9085: my $response=$ua->request($request);
9086: $$rtncode = $response->code;
9087: if (! $response->is_success()) {
9088: return 'failed';
9089: }
9090: if ($reqtype eq 'HEAD') {
9091: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9092: } elsif ($reqtype eq 'GET') {
9093: $$info = $response->content;
9094: }
9095: return 'ok';
9096: }
9097:
9098: sub readfile {
9099: my $file = shift;
9100: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9101: my $fh;
9102: open($fh,"<$file");
9103: my $a='';
9104: while (my $line = <$fh>) { $a .= $line; }
9105: return $a;
9106: }
9107:
9108: sub filelocation {
9109: my ($dir,$file) = @_;
9110: my $location;
9111: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9112:
9113: if ($file =~ m-^/adm/-) {
9114: $file=~s-^/adm/wrapper/-/-;
9115: $file=~s-^/adm/coursedocs/showdoc/-/-;
9116: }
9117:
9118: if ($file=~m:^/~:) { # is a contruction space reference
9119: $location = $file;
9120: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9121: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9122: # is a correct contruction space reference
9123: $location = $file;
9124: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9125: $location = $file;
9126: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9127: my ($udom,$uname,$filename)=
9128: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9129: my $home=&homeserver($uname,$udom);
9130: my $is_me=0;
9131: my @ids=¤t_machine_ids();
9132: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9133: if ($is_me) {
9134: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9135: } else {
9136: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9137: $udom.'/'.$uname.'/'.$filename;
9138: }
9139: } elsif ($file =~ m-^/adm/-) {
9140: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9141: } else {
9142: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9143: $file=~s:^/res/:/:;
9144: if ( !( $file =~ m:^/:) ) {
9145: $location = $dir. '/'.$file;
9146: } else {
9147: $location = '/home/httpd/html/res'.$file;
9148: }
9149: }
9150: $location=~s://+:/:g; # remove duplicate /
9151: while ($location=~m{/\.\./}) {
9152: if ($location =~ m{/[^/]+/\.\./}) {
9153: $location=~ s{/[^/]+/\.\./}{/}g;
9154: } else {
9155: $location=~ s{/\.\./}{/}g;
9156: }
9157: } #remove dir/..
9158: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9159: return $location;
9160: }
9161:
9162: sub hreflocation {
9163: my ($dir,$file)=@_;
9164: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9165: $file=filelocation($dir,$file);
9166: } elsif ($file=~m-^/adm/-) {
9167: $file=~s-^/adm/wrapper/-/-;
9168: $file=~s-^/adm/coursedocs/showdoc/-/-;
9169: }
9170: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9171: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9172: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9173: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9174: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9175: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9176: -/uploaded/$1/$2/-x;
9177: }
9178: if ($file=~ m{^/userfiles/}) {
9179: $file =~ s{^/userfiles/}{/uploaded/};
9180: }
9181: return $file;
9182: }
9183:
9184: sub current_machine_domains {
9185: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9186: }
9187:
9188: sub machine_domains {
9189: my ($hostname) = @_;
9190: my @domains;
9191: my %hostname = &all_hostnames();
9192: while( my($id, $name) = each(%hostname)) {
9193: # &logthis("-$id-$name-$hostname-");
9194: if ($hostname eq $name) {
9195: push(@domains,&host_domain($id));
9196: }
9197: }
9198: return @domains;
9199: }
9200:
9201: sub current_machine_ids {
9202: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9203: }
9204:
9205: sub machine_ids {
9206: my ($hostname) = @_;
9207: $hostname ||= &hostname($perlvar{'lonHostID'});
9208: my @ids;
9209: my %name_to_host = &all_names();
9210: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9211: return @{ $name_to_host{$hostname} };
9212: }
9213: return;
9214: }
9215:
9216: sub additional_machine_domains {
9217: my @domains;
9218: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9219: while( my $line = <$fh>) {
9220: $line =~ s/\s//g;
9221: push(@domains,$line);
9222: }
9223: return @domains;
9224: }
9225:
9226: sub default_login_domain {
9227: my $domain = $perlvar{'lonDefDomain'};
9228: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9229: foreach my $posdom (¤t_machine_domains(),
9230: &additional_machine_domains()) {
9231: if (lc($posdom) eq lc($testdomain)) {
9232: $domain=$posdom;
9233: last;
9234: }
9235: }
9236: return $domain;
9237: }
9238:
9239: # ------------------------------------------------------------- Declutters URLs
9240:
9241: sub declutter {
9242: my $thisfn=shift;
9243: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9244: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9245: $thisfn=~s/^\///;
9246: $thisfn=~s|^adm/wrapper/||;
9247: $thisfn=~s|^adm/coursedocs/showdoc/||;
9248: $thisfn=~s/^res\///;
9249: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9250: $thisfn=~s/\?.+$//;
9251: }
9252: return $thisfn;
9253: }
9254:
9255: # ------------------------------------------------------------- Clutter up URLs
9256:
9257: sub clutter {
9258: my $thisfn='/'.&declutter(shift);
9259: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9260: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9261: $thisfn='/res'.$thisfn;
9262: }
9263: if ($thisfn !~m|^/adm|) {
9264: if ($thisfn =~ m|^/ext/|) {
9265: $thisfn='/adm/wrapper'.$thisfn;
9266: } else {
9267: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9268: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9269: if ($embstyle eq 'ssi'
9270: || ($embstyle eq 'hdn')
9271: || ($embstyle eq 'rat')
9272: || ($embstyle eq 'prv')
9273: || ($embstyle eq 'ign')) {
9274: #do nothing with these
9275: } elsif (($embstyle eq 'img')
9276: || ($embstyle eq 'emb')
9277: || ($embstyle eq 'wrp')) {
9278: $thisfn='/adm/wrapper'.$thisfn;
9279: } elsif ($embstyle eq 'unk'
9280: && $thisfn!~/\.(sequence|page)$/) {
9281: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9282: } else {
9283: # &logthis("Got a blank emb style");
9284: }
9285: }
9286: }
9287: return $thisfn;
9288: }
9289:
9290: sub clutter_with_no_wrapper {
9291: my $uri = &clutter(shift);
9292: if ($uri =~ m-^/adm/-) {
9293: $uri =~ s-^/adm/wrapper/-/-;
9294: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9295: }
9296: return $uri;
9297: }
9298:
9299: sub freeze_escape {
9300: my ($value)=@_;
9301: if (ref($value)) {
9302: $value=&nfreeze($value);
9303: return '__FROZEN__'.&escape($value);
9304: }
9305: return &escape($value);
9306: }
9307:
9308:
9309: sub thaw_unescape {
9310: my ($value)=@_;
9311: if ($value =~ /^__FROZEN__/) {
9312: substr($value,0,10,undef);
9313: $value=&unescape($value);
9314: return &thaw($value);
9315: }
9316: return &unescape($value);
9317: }
9318:
9319: sub correct_line_ends {
9320: my ($result)=@_;
9321: $$result =~s/\r\n/\n/mg;
9322: $$result =~s/\r/\n/mg;
9323: }
9324: # ================================================================ Main Program
9325:
9326: sub goodbye {
9327: &logthis("Starting Shut down");
9328: #not converted to using infrastruture and probably shouldn't be
9329: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9330: #converted
9331: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9332: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9333: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9334: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9335: #1.1 only
9336: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9337: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9338: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9339: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9340: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9341: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9342: &logthis(sprintf("%-20s is %s",'hits',$hits));
9343: &flushcourselogs();
9344: &logthis("Shutting down");
9345: }
9346:
9347: sub get_dns {
9348: my ($url,$func,$ignore_cache) = @_;
9349: if (!$ignore_cache) {
9350: my ($content,$cached)=
9351: &Apache::lonnet::is_cached_new('dns',$url);
9352: if ($cached) {
9353: &$func($content);
9354: return;
9355: }
9356: }
9357:
9358: my %alldns;
9359: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9360: foreach my $dns (<$config>) {
9361: next if ($dns !~ /^\^(\S*)/x);
9362: my $line = $1;
9363: my ($host,$protocol) = split(/:/,$line);
9364: if ($protocol ne 'https') {
9365: $protocol = 'http';
9366: }
9367: $alldns{$host} = $protocol;
9368: }
9369: while (%alldns) {
9370: my ($dns) = keys(%alldns);
9371: my $ua=new LWP::UserAgent;
9372: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9373: my $response=$ua->request($request);
9374: delete($alldns{$dns});
9375: next if ($response->is_error());
9376: my @content = split("\n",$response->content);
9377: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9378: &$func(\@content);
9379: return;
9380: }
9381: close($config);
9382: my $which = (split('/',$url))[3];
9383: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9384: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9385: my @content = <$config>;
9386: &$func(\@content);
9387: return;
9388: }
9389: # ------------------------------------------------------------ Read domain file
9390: {
9391: my $loaded;
9392: my %domain;
9393:
9394: sub parse_domain_tab {
9395: my ($lines) = @_;
9396: foreach my $line (@$lines) {
9397: next if ($line =~ /^(\#|\s*$ )/x);
9398:
9399: chomp($line);
9400: my ($name,@elements) = split(/:/,$line,9);
9401: my %this_domain;
9402: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9403: 'lang_def', 'city', 'longi', 'lati',
9404: 'primary') {
9405: $this_domain{$field} = shift(@elements);
9406: }
9407: $domain{$name} = \%this_domain;
9408: }
9409: }
9410:
9411: sub reset_domain_info {
9412: undef($loaded);
9413: undef(%domain);
9414: }
9415:
9416: sub load_domain_tab {
9417: my ($ignore_cache) = @_;
9418: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9419: my $fh;
9420: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9421: my @lines = <$fh>;
9422: &parse_domain_tab(\@lines);
9423: }
9424: close($fh);
9425: $loaded = 1;
9426: }
9427:
9428: sub domain {
9429: &load_domain_tab() if (!$loaded);
9430:
9431: my ($name,$what) = @_;
9432: return if ( !exists($domain{$name}) );
9433:
9434: if (!$what) {
9435: return $domain{$name}{'description'};
9436: }
9437: return $domain{$name}{$what};
9438: }
9439:
9440: sub domain_info {
9441: &load_domain_tab() if (!$loaded);
9442: return %domain;
9443: }
9444:
9445: }
9446:
9447:
9448: # ------------------------------------------------------------- Read hosts file
9449: {
9450: my %hostname;
9451: my %hostdom;
9452: my %libserv;
9453: my $loaded;
9454: my %name_to_host;
9455:
9456: sub parse_hosts_tab {
9457: my ($file) = @_;
9458: foreach my $configline (@$file) {
9459: next if ($configline =~ /^(\#|\s*$ )/x);
9460: next if ($configline =~ /^\^/);
9461: chomp($configline);
9462: my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
9463: $name=~s/\s//g;
9464: if ($id && $domain && $role && $name) {
9465: $hostname{$id}=$name;
9466: push(@{$name_to_host{$name}}, $id);
9467: $hostdom{$id}=$domain;
9468: if ($role eq 'library') { $libserv{$id}=$name; }
9469: if (defined($protocol)) {
9470: if ($protocol eq 'https') {
9471: $protocol{$id} = $protocol;
9472: } else {
9473: $protocol{$id} = 'http';
9474: }
9475: } else {
9476: $protocol{$id} = 'http';
9477: }
9478: }
9479: }
9480: }
9481:
9482: sub reset_hosts_info {
9483: &purge_remembered();
9484: &reset_domain_info();
9485: &reset_hosts_ip_info();
9486: undef(%name_to_host);
9487: undef(%hostname);
9488: undef(%hostdom);
9489: undef(%libserv);
9490: undef($loaded);
9491: }
9492:
9493: sub load_hosts_tab {
9494: my ($ignore_cache) = @_;
9495: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9496: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9497: my @config = <$config>;
9498: &parse_hosts_tab(\@config);
9499: close($config);
9500: $loaded=1;
9501: }
9502:
9503: sub hostname {
9504: &load_hosts_tab() if (!$loaded);
9505:
9506: my ($lonid) = @_;
9507: return $hostname{$lonid};
9508: }
9509:
9510: sub all_hostnames {
9511: &load_hosts_tab() if (!$loaded);
9512:
9513: return %hostname;
9514: }
9515:
9516: sub all_names {
9517: &load_hosts_tab() if (!$loaded);
9518:
9519: return %name_to_host;
9520: }
9521:
9522: sub all_host_domain {
9523: &load_hosts_tab() if (!$loaded);
9524: return %hostdom;
9525: }
9526:
9527: sub is_library {
9528: &load_hosts_tab() if (!$loaded);
9529:
9530: return exists($libserv{$_[0]});
9531: }
9532:
9533: sub all_library {
9534: &load_hosts_tab() if (!$loaded);
9535:
9536: return %libserv;
9537: }
9538:
9539: sub get_servers {
9540: &load_hosts_tab() if (!$loaded);
9541:
9542: my ($domain,$type) = @_;
9543: my %possible_hosts = ($type eq 'library') ? %libserv
9544: : %hostname;
9545: my %result;
9546: if (ref($domain) eq 'ARRAY') {
9547: while ( my ($host,$hostname) = each(%possible_hosts)) {
9548: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
9549: $result{$host} = $hostname;
9550: }
9551: }
9552: } else {
9553: while ( my ($host,$hostname) = each(%possible_hosts)) {
9554: if ($hostdom{$host} eq $domain) {
9555: $result{$host} = $hostname;
9556: }
9557: }
9558: }
9559: return %result;
9560: }
9561:
9562: sub host_domain {
9563: &load_hosts_tab() if (!$loaded);
9564:
9565: my ($lonid) = @_;
9566: return $hostdom{$lonid};
9567: }
9568:
9569: sub all_domains {
9570: &load_hosts_tab() if (!$loaded);
9571:
9572: my %seen;
9573: my @uniq = grep(!$seen{$_}++, values(%hostdom));
9574: return @uniq;
9575: }
9576: }
9577:
9578: {
9579: my %iphost;
9580: my %name_to_ip;
9581: my %lonid_to_ip;
9582:
9583: sub get_hosts_from_ip {
9584: my ($ip) = @_;
9585: my %iphosts = &get_iphost();
9586: if (ref($iphosts{$ip})) {
9587: return @{$iphosts{$ip}};
9588: }
9589: return;
9590: }
9591:
9592: sub reset_hosts_ip_info {
9593: undef(%iphost);
9594: undef(%name_to_ip);
9595: undef(%lonid_to_ip);
9596: }
9597:
9598: sub get_host_ip {
9599: my ($lonid) = @_;
9600: if (exists($lonid_to_ip{$lonid})) {
9601: return $lonid_to_ip{$lonid};
9602: }
9603: my $name=&hostname($lonid);
9604: my $ip = gethostbyname($name);
9605: return if (!$ip || length($ip) ne 4);
9606: $ip=inet_ntoa($ip);
9607: $name_to_ip{$name} = $ip;
9608: $lonid_to_ip{$lonid} = $ip;
9609: return $ip;
9610: }
9611:
9612: sub get_iphost {
9613: my ($ignore_cache) = @_;
9614:
9615: if (!$ignore_cache) {
9616: if (%iphost) {
9617: return %iphost;
9618: }
9619: my ($ip_info,$cached)=
9620: &Apache::lonnet::is_cached_new('iphost','iphost');
9621: if ($cached) {
9622: %iphost = %{$ip_info->[0]};
9623: %name_to_ip = %{$ip_info->[1]};
9624: %lonid_to_ip = %{$ip_info->[2]};
9625: return %iphost;
9626: }
9627: }
9628:
9629: # get yesterday's info for fallback
9630: my %old_name_to_ip;
9631: my ($ip_info,$cached)=
9632: &Apache::lonnet::is_cached_new('iphost','iphost');
9633: if ($cached) {
9634: %old_name_to_ip = %{$ip_info->[1]};
9635: }
9636:
9637: my %name_to_host = &all_names();
9638: foreach my $name (keys(%name_to_host)) {
9639: my $ip;
9640: if (!exists($name_to_ip{$name})) {
9641: $ip = gethostbyname($name);
9642: if (!$ip || length($ip) ne 4) {
9643: if (defined($old_name_to_ip{$name})) {
9644: $ip = $old_name_to_ip{$name};
9645: &logthis("Can't find $name defaulting to old $ip");
9646: } else {
9647: &logthis("Name $name no IP found");
9648: next;
9649: }
9650: } else {
9651: $ip=inet_ntoa($ip);
9652: }
9653: $name_to_ip{$name} = $ip;
9654: } else {
9655: $ip = $name_to_ip{$name};
9656: }
9657: foreach my $id (@{ $name_to_host{$name} }) {
9658: $lonid_to_ip{$id} = $ip;
9659: }
9660: push(@{$iphost{$ip}},@{$name_to_host{$name}});
9661: }
9662: &Apache::lonnet::do_cache_new('iphost','iphost',
9663: [\%iphost,\%name_to_ip,\%lonid_to_ip],
9664: 48*60*60);
9665:
9666: return %iphost;
9667: }
9668:
9669: #
9670: # Given a DNS returns the loncapa host name for that DNS
9671: #
9672: sub host_from_dns {
9673: my ($dns) = @_;
9674: my @hosts;
9675: my $ip;
9676:
9677: if (exists($name_to_ip{$dns})) {
9678: $ip = $name_to_ip{$dns};
9679: }
9680: if (!$ip) {
9681: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
9682: if (length($ip) == 4) {
9683: $ip = &IO::Socket::inet_ntoa($ip);
9684: }
9685: }
9686: if ($ip) {
9687: @hosts = get_hosts_from_ip($ip);
9688: return $hosts[0];
9689: }
9690: return undef;
9691: }
9692:
9693: }
9694:
9695: BEGIN {
9696:
9697: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
9698: unless ($readit) {
9699: {
9700: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
9701: %perlvar = (%perlvar,%{$configvars});
9702: }
9703:
9704:
9705: # ------------------------------------------------------ Read spare server file
9706: {
9707: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
9708:
9709: while (my $configline=<$config>) {
9710: chomp($configline);
9711: if ($configline) {
9712: my ($host,$type) = split(':',$configline,2);
9713: if (!defined($type) || $type eq '') { $type = 'default' };
9714: push(@{ $spareid{$type} }, $host);
9715: }
9716: }
9717: close($config);
9718: }
9719: # ------------------------------------------------------------ Read permissions
9720: {
9721: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
9722:
9723: while (my $configline=<$config>) {
9724: chomp($configline);
9725: if ($configline) {
9726: my ($role,$perm)=split(/ /,$configline);
9727: if ($perm ne '') { $pr{$role}=$perm; }
9728: }
9729: }
9730: close($config);
9731: }
9732:
9733: # -------------------------------------------- Read plain texts for permissions
9734: {
9735: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
9736:
9737: while (my $configline=<$config>) {
9738: chomp($configline);
9739: if ($configline) {
9740: my ($short,@plain)=split(/:/,$configline);
9741: %{$prp{$short}} = ();
9742: if (@plain > 0) {
9743: $prp{$short}{'std'} = $plain[0];
9744: for (my $i=1; $i<@plain; $i++) {
9745: $prp{$short}{'alt'.$i} = $plain[$i];
9746: }
9747: }
9748: }
9749: }
9750: close($config);
9751: }
9752:
9753: # ---------------------------------------------------------- Read package table
9754: {
9755: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
9756:
9757: while (my $configline=<$config>) {
9758: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
9759: chomp($configline);
9760: my ($short,$plain)=split(/:/,$configline);
9761: my ($pack,$name)=split(/\&/,$short);
9762: if ($plain ne '') {
9763: $packagetab{$pack.'&'.$name.'&name'}=$name;
9764: $packagetab{$short}=$plain;
9765: }
9766: }
9767: close($config);
9768: }
9769:
9770: # ------------- set up temporary directory
9771: {
9772: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
9773:
9774: }
9775:
9776: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
9777: 'compress_threshold'=> 20_000,
9778: });
9779:
9780: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
9781: $dumpcount=0;
9782: $locknum=0;
9783:
9784: &logtouch();
9785: &logthis('<font color="yellow">INFO: Read configuration</font>');
9786: $readit=1;
9787: {
9788: use integer;
9789: my $test=(2**32)+1;
9790: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
9791: &logthis(" Detected 64bit platform ($_64bit)");
9792: }
9793: }
9794: }
9795:
9796: 1;
9797: __END__
9798:
9799: =pod
9800:
9801: =head1 NAME
9802:
9803: Apache::lonnet - Subroutines to ask questions about things in the network.
9804:
9805: =head1 SYNOPSIS
9806:
9807: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
9808:
9809: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
9810:
9811: Common parameters:
9812:
9813: =over 4
9814:
9815: =item *
9816:
9817: $uname : an internal username (if $cname expecting a course Id specifically)
9818:
9819: =item *
9820:
9821: $udom : a domain (if $cdom expecting a course's domain specifically)
9822:
9823: =item *
9824:
9825: $symb : a resource instance identifier
9826:
9827: =item *
9828:
9829: $namespace : the name of a .db file that contains the data needed or
9830: being set.
9831:
9832: =back
9833:
9834: =head1 OVERVIEW
9835:
9836: lonnet provides subroutines which interact with the
9837: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
9838: about classes, users, and resources.
9839:
9840: For many of these objects you can also use this to store data about
9841: them or modify them in various ways.
9842:
9843: =head2 Symbs
9844:
9845: To identify a specific instance of a resource, LON-CAPA uses symbols
9846: or "symbs"X<symb>. These identifiers are built from the URL of the
9847: map, the resource number of the resource in the map, and the URL of
9848: the resource itself. The latter is somewhat redundant, but might help
9849: if maps change.
9850:
9851: An example is
9852:
9853: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
9854:
9855: The respective map entry is
9856:
9857: <resource id="19" src="/res/msu/korte/tests/part12.problem"
9858: title="Problem 2">
9859: </resource>
9860:
9861: Symbs are used by the random number generator, as well as to store and
9862: restore data specific to a certain instance of for example a problem.
9863:
9864: =head2 Storing And Retrieving Data
9865:
9866: X<store()>X<cstore()>X<restore()>Three of the most important functions
9867: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
9868: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
9869: is is the non-critical message twin of cstore. These functions are for
9870: handlers to store a perl hash to a user's permanent data space in an
9871: easy manner, and to retrieve it again on another call. It is expected
9872: that a handler would use this once at the beginning to retrieve data,
9873: and then again once at the end to send only the new data back.
9874:
9875: The data is stored in the user's data directory on the user's
9876: homeserver under the ID of the course.
9877:
9878: The hash that is returned by restore will have all of the previous
9879: value for all of the elements of the hash.
9880:
9881: Example:
9882:
9883: #creating a hash
9884: my %hash;
9885: $hash{'foo'}='bar';
9886:
9887: #storing it
9888: &Apache::lonnet::cstore(\%hash);
9889:
9890: #changing a value
9891: $hash{'foo'}='notbar';
9892:
9893: #adding a new value
9894: $hash{'bar'}='foo';
9895: &Apache::lonnet::cstore(\%hash);
9896:
9897: #retrieving the hash
9898: my %history=&Apache::lonnet::restore();
9899:
9900: #print the hash
9901: foreach my $key (sort(keys(%history))) {
9902: print("\%history{$key} = $history{$key}");
9903: }
9904:
9905: Will print out:
9906:
9907: %history{1:foo} = bar
9908: %history{1:keys} = foo:timestamp
9909: %history{1:timestamp} = 990455579
9910: %history{2:bar} = foo
9911: %history{2:foo} = notbar
9912: %history{2:keys} = foo:bar:timestamp
9913: %history{2:timestamp} = 990455580
9914: %history{bar} = foo
9915: %history{foo} = notbar
9916: %history{timestamp} = 990455580
9917: %history{version} = 2
9918:
9919: Note that the special hash entries C<keys>, C<version> and
9920: C<timestamp> were added to the hash. C<version> will be equal to the
9921: total number of versions of the data that have been stored. The
9922: C<timestamp> attribute will be the UNIX time the hash was
9923: stored. C<keys> is available in every historical section to list which
9924: keys were added or changed at a specific historical revision of a
9925: hash.
9926:
9927: B<Warning>: do not store the hash that restore returns directly. This
9928: will cause a mess since it will restore the historical keys as if the
9929: were new keys. I.E. 1:foo will become 1:1:foo etc.
9930:
9931: Calling convention:
9932:
9933: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
9934: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
9935:
9936: For more detailed information, see lonnet specific documentation.
9937:
9938: =head1 RETURN MESSAGES
9939:
9940: =over 4
9941:
9942: =item * B<con_lost>: unable to contact remote host
9943:
9944: =item * B<con_delayed>: unable to contact remote host, message will be delivered
9945: when the connection is brought back up
9946:
9947: =item * B<con_failed>: unable to contact remote host and unable to save message
9948: for later delivery
9949:
9950: =item * B<error:>: an error a occurred, a description of the error follows the :
9951:
9952: =item * B<no_such_host>: unable to fund a host associated with the user/domain
9953: that was requested
9954:
9955: =back
9956:
9957: =head1 PUBLIC SUBROUTINES
9958:
9959: =head2 Session Environment Functions
9960:
9961: =over 4
9962:
9963: =item *
9964: X<appenv()>
9965: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9966: the user envirnoment file, and will be restored for each access this
9967: user makes during this session, also modifies the %env for the current
9968: process. Optional rolesarrayref - if defined contains a reference to an array
9969: of roles which are exempt from the restriction on modifying user.role entries
9970: in the user's environment.db and in %env.
9971:
9972: =item *
9973: X<delenv()>
9974: B<delenv($delthis,$regexp)>: removes all items from the session
9975: environment file that begin with $delthis. If the
9976: optional second arg - $regexp - is true, $delthis is treated as a
9977: regular expression, otherwise \Q$delthis\E is used.
9978: The values are also deleted from the current processes %env.
9979:
9980: =item * get_env_multiple($name)
9981:
9982: gets $name from the %env hash, it seemlessly handles the cases where multiple
9983: values may be defined and end up as an array ref.
9984:
9985: returns an array of values
9986:
9987: =back
9988:
9989: =head2 User Information
9990:
9991: =over 4
9992:
9993: =item *
9994: X<queryauthenticate()>
9995: B<queryauthenticate($uname,$udom)>: try to determine user's current
9996: authentication scheme
9997:
9998: =item *
9999: X<authenticate()>
10000: B<authenticate($uname,$upass,$udom)>: try to
10001: authenticate user from domain's lib servers (first use the current
10002: one). C<$upass> should be the users password.
10003:
10004: =item *
10005: X<homeserver()>
10006: B<homeserver($uname,$udom)>: find the server which has
10007: the user's directory and files (there must be only one), this caches
10008: the answer, and also caches if there is a borken connection.
10009:
10010: =item *
10011: X<idget()>
10012: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10013: (IDs are a unique resource in a domain, there must be only 1 ID per
10014: username, and only 1 username per ID in a specific domain) (returns
10015: hash: id=>name,id=>name)
10016:
10017: =item *
10018: X<idrget()>
10019: B<idrget($udom,@unames)>: find the IDs behind a list of
10020: usernames (returns hash: name=>id,name=>id)
10021:
10022: =item *
10023: X<idput()>
10024: B<idput($udom,%ids)>: store away a list of names and associated IDs
10025:
10026: =item *
10027: X<rolesinit()>
10028: B<rolesinit($udom,$username,$authhost)>: get user privileges
10029:
10030: =item *
10031: X<getsection()>
10032: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10033: course $cname, return section name/number or '' for "not in course"
10034: and '-1' for "no section"
10035:
10036: =item *
10037: X<userenvironment()>
10038: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10039: passed in @what from the requested user's environment, returns a hash
10040:
10041: =item *
10042: X<userlog_query()>
10043: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10044: activity.log file. %filters defines filters applied when parsing the
10045: log file. These can be start or end timestamps, or the type of action
10046: - log to look for Login or Logout events, check for Checkin or
10047: Checkout, role for role selection. The response is in the form
10048: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10049: escaped strings of the action recorded in the activity.log file.
10050:
10051: =back
10052:
10053: =head2 User Roles
10054:
10055: =over 4
10056:
10057: =item *
10058:
10059: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10060: F: full access
10061: U,I,K: authentication modes (cxx only)
10062: '': forbidden
10063: 1: user needs to choose course
10064: 2: browse allowed
10065: A: passphrase authentication needed
10066:
10067: =item *
10068:
10069: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10070: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10071: and course level
10072:
10073: =item *
10074:
10075: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10076: (rolesplain.tab); plain text explanation of a user role term.
10077: $type is Course (default) or Community.
10078: If $forcedefault evaluates to true, text returned will be default
10079: text for $type. Otherwise, if this is a course, the text returned
10080: will be a custom name for the role (if defined in the course's
10081: environment). If no custom name is defined the default is returned.
10082:
10083: =item *
10084:
10085: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10086: All arguments are optional. Returns a hash of a roles, either for
10087: co-author/assistant author roles for a user's Construction Space
10088: (default), or if $context is 'userroles', roles for the user himself,
10089: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10090: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10091: For each key, value is set to colon-separated start and end times for
10092: the role. If no username and domain are specified, will default to
10093: current user/domain. Types, roles, and roledoms are references to arrays
10094: of role statuses (active, future or previous), roles
10095: (e.g., cc,in, st etc.) and domains of the roles which can be used
10096: to restrict the list of roles reported. If no array ref is
10097: provided for types, will default to return only active roles.
10098:
10099: =back
10100:
10101: =head2 User Modification
10102:
10103: =over 4
10104:
10105: =item *
10106:
10107: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10108: user for the level given by URL. Optional start and end dates (leave empty
10109: string or zero for "no date")
10110:
10111: =item *
10112:
10113: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10114: change a users, password, possible return values are: ok,
10115: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10116: refused
10117:
10118: =item *
10119:
10120: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10121:
10122: =item *
10123:
10124: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
10125: $forceid,$desiredhome,$email,$inststatus) :
10126: modify user
10127:
10128: =item *
10129:
10130: modifystudent
10131:
10132: modify a student's enrollment and identification information.
10133: The course id is resolved based on the current users environment.
10134: This means the envoking user must be a course coordinator or otherwise
10135: associated with a course.
10136:
10137: This call is essentially a wrapper for lonnet::modifyuser and
10138: lonnet::modify_student_enrollment
10139:
10140: Inputs:
10141:
10142: =over 4
10143:
10144: =item B<$udom> Student's loncapa domain
10145:
10146: =item B<$uname> Student's loncapa login name
10147:
10148: =item B<$uid> Student/Employee ID
10149:
10150: =item B<$umode> Student's authentication mode
10151:
10152: =item B<$upass> Student's password
10153:
10154: =item B<$first> Student's first name
10155:
10156: =item B<$middle> Student's middle name
10157:
10158: =item B<$last> Student's last name
10159:
10160: =item B<$gene> Student's generation
10161:
10162: =item B<$usec> Student's section in course
10163:
10164: =item B<$end> Unix time of the roles expiration
10165:
10166: =item B<$start> Unix time of the roles start date
10167:
10168: =item B<$forceid> If defined, allow $uid to be changed
10169:
10170: =item B<$desiredhome> server to use as home server for student
10171:
10172: =item B<$email> Student's permanent e-mail address
10173:
10174: =item B<$type> Type of enrollment (auto or manual)
10175:
10176: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10177:
10178: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10179:
10180: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10181:
10182: =item B<$context> role change context (shown in User Management Logs display in a course)
10183:
10184: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10185:
10186: =back
10187:
10188: =item *
10189:
10190: modify_student_enrollment
10191:
10192: Change a students enrollment status in a class. The environment variable
10193: 'role.request.course' must be defined for this function to proceed.
10194:
10195: Inputs:
10196:
10197: =over 4
10198:
10199: =item $udom, students domain
10200:
10201: =item $uname, students name
10202:
10203: =item $uid, students user id
10204:
10205: =item $first, students first name
10206:
10207: =item $middle
10208:
10209: =item $last
10210:
10211: =item $gene
10212:
10213: =item $usec
10214:
10215: =item $end
10216:
10217: =item $start
10218:
10219: =item $type
10220:
10221: =item $locktype
10222:
10223: =item $cid
10224:
10225: =item $selfenroll
10226:
10227: =item $context
10228:
10229: =back
10230:
10231:
10232: =item *
10233:
10234: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10235: custom role; give a custom role to a user for the level given by URL. Specify
10236: name and domain of role author, and role name
10237:
10238: =item *
10239:
10240: revokerole($udom,$uname,$url,$role) : revoke a role for url
10241:
10242: =item *
10243:
10244: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10245:
10246: =back
10247:
10248: =head2 Course Infomation
10249:
10250: =over 4
10251:
10252: =item *
10253:
10254: coursedescription($courseid) : returns a hash of information about the
10255: specified course id, including all environment settings for the
10256: course, the description of the course will be in the hash under the
10257: key 'description'
10258:
10259: =item *
10260:
10261: resdata($name,$domain,$type,@which) : request for current parameter
10262: setting for a specific $type, where $type is either 'course' or 'user',
10263: @what should be a list of parameters to ask about. This routine caches
10264: answers for 5 minutes.
10265:
10266: =item *
10267:
10268: get_courseresdata($courseid, $domain) : dump the entire course resource
10269: data base, returning a hash that is keyed by the resource name and has
10270: values that are the resource value. I believe that the timestamps and
10271: versions are also returned.
10272:
10273:
10274: =back
10275:
10276: =head2 Course Modification
10277:
10278: =over 4
10279:
10280: =item *
10281:
10282: writecoursepref($courseid,%prefs) : write preferences (environment
10283: database) for a course
10284:
10285: =item *
10286:
10287: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
10288:
10289: =item *
10290:
10291: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
10292:
10293: =back
10294:
10295: =head2 Resource Subroutines
10296:
10297: =over 4
10298:
10299: =item *
10300:
10301: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
10302:
10303: =item *
10304:
10305: repcopy($filename) : subscribes to the requested file, and attempts to
10306: replicate from the owning library server, Might return
10307: 'unavailable', 'not_found', 'forbidden', 'ok', or
10308: 'bad_request', also attempts to grab the metadata for the
10309: resource. Expects the local filesystem pathname
10310: (/home/httpd/html/res/....)
10311:
10312: =back
10313:
10314: =head2 Resource Information
10315:
10316: =over 4
10317:
10318: =item *
10319:
10320: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
10321: a vairety of different possible values, $varname should be a request
10322: string, and the other parameters can be used to specify who and what
10323: one is asking about.
10324:
10325: Possible values for $varname are environment.lastname (or other item
10326: from the envirnment hash), user.name (or someother aspect about the
10327: user), resource.0.maxtries (or some other part and parameter of a
10328: resource)
10329:
10330: =item *
10331:
10332: directcondval($number) : get current value of a condition; reads from a state
10333: string
10334:
10335: =item *
10336:
10337: condval($condidx) : value of condition index based on state
10338:
10339: =item *
10340:
10341: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
10342: resource's metadata, $what should be either a specific key, or either
10343: 'keys' (to get a list of possible keys) or 'packages' to get a list of
10344: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
10345:
10346: this function automatically caches all requests
10347:
10348: =item *
10349:
10350: metadata_query($query,$custom,$customshow) : make a metadata query against the
10351: network of library servers; returns file handle of where SQL and regex results
10352: will be stored for query
10353:
10354: =item *
10355:
10356: symbread($filename) : return symbolic list entry (filename argument optional);
10357: returns the data handle
10358:
10359: =item *
10360:
10361: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
10362: a possible symb for the URL in $thisfn, and if is an encryypted
10363: resource that the user accessed using /enc/ returns a 1 on success, 0
10364: on failure, user must be in a course, as it assumes the existance of
10365: the course initial hash, and uses $env('request.course.id'}
10366:
10367:
10368: =item *
10369:
10370: symbclean($symb) : removes versions numbers from a symb, returns the
10371: cleaned symb
10372:
10373: =item *
10374:
10375: is_on_map($uri) : checks if the $uri is somewhere on the current
10376: course map, user must be in a course for it to work.
10377:
10378: =item *
10379:
10380: numval($salt) : return random seed value (addend for rndseed)
10381:
10382: =item *
10383:
10384: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
10385: a random seed, all arguments are optional, if they aren't sent it uses the
10386: environment to derive them. Note: if symb isn't sent and it can't get one
10387: from &symbread it will use the current time as its return value
10388:
10389: =item *
10390:
10391: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
10392: unfakeable, receipt
10393:
10394: =item *
10395:
10396: receipt() : API to ireceipt working off of env values; given out to users
10397:
10398: =item *
10399:
10400: countacc($url) : count the number of accesses to a given URL
10401:
10402: =item *
10403:
10404: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
10405:
10406: =item *
10407:
10408: checkin($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 $tcrsid)
10409:
10410: =item *
10411:
10412: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
10413:
10414: =item *
10415:
10416: devalidate($symb) : devalidate temporary spreadsheet calculations,
10417: forcing spreadsheet to reevaluate the resource scores next time.
10418:
10419: =back
10420:
10421: =head2 Storing/Retreiving Data
10422:
10423: =over 4
10424:
10425: =item *
10426:
10427: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
10428: for this url; hashref needs to be given and should be a \%hashname; the
10429: remaining args aren't required and if they aren't passed or are '' they will
10430: be derived from the env
10431:
10432: =item *
10433:
10434: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
10435: uses critical subroutine
10436:
10437: =item *
10438:
10439: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
10440: all args are optional
10441:
10442: =item *
10443:
10444: dumpstore($namespace,$udom,$uname,$regexp,$range) :
10445: dumps the complete (or key matching regexp) namespace into a hash
10446: ($udom, $uname, $regexp, $range are optional) for a namespace that is
10447: normally &store()ed into
10448:
10449: $range should be either an integer '100' (give me the first 100
10450: matching records)
10451: or be two integers sperated by a - with no spaces
10452: '30-50' (give me the 30th through the 50th matching
10453: records)
10454:
10455:
10456: =item *
10457:
10458: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
10459: replaces a &store() version of data with a replacement set of data
10460: for a particular resource in a namespace passed in the $storehash hash
10461: reference
10462:
10463: =item *
10464:
10465: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
10466: works very similar to store/cstore, but all data is stored in a
10467: temporary location and can be reset using tmpreset, $storehash should
10468: be a hash reference, returns nothing on success
10469:
10470: =item *
10471:
10472: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
10473: similar to restore, but all data is stored in a temporary location and
10474: can be reset using tmpreset. Returns a hash of values on success,
10475: error string otherwise.
10476:
10477: =item *
10478:
10479: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
10480: deltes all keys for $symb form the temporary storage hash.
10481:
10482: =item *
10483:
10484: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10485: reference filled in from namesp ($udom and $uname are optional)
10486:
10487: =item *
10488:
10489: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
10490: namesp ($udom and $uname are optional)
10491:
10492: =item *
10493:
10494: dump($namespace,$udom,$uname,$regexp,$range) :
10495: dumps the complete (or key matching regexp) namespace into a hash
10496: ($udom, $uname, $regexp, $range are optional)
10497:
10498: $range should be either an integer '100' (give me the first 100
10499: matching records)
10500: or be two integers sperated by a - with no spaces
10501: '30-50' (give me the 30th through the 50th matching
10502: records)
10503: =item *
10504:
10505: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
10506: $store can be a scalar, an array reference, or if the amount to be
10507: incremented is > 1, a hash reference.
10508:
10509: ($udom and $uname are optional)
10510:
10511: =item *
10512:
10513: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
10514: ($udom and $uname are optional)
10515:
10516: =item *
10517:
10518: cput($namespace,$storehash,$udom,$uname) : critical put
10519: ($udom and $uname are optional)
10520:
10521: =item *
10522:
10523: newput($namespace,$storehash,$udom,$uname) :
10524:
10525: Attempts to store the items in the $storehash, but only if they don't
10526: currently exist, if this succeeds you can be certain that you have
10527: successfully created a new key value pair in the $namespace db.
10528:
10529:
10530: Args:
10531: $namespace: name of database to store values to
10532: $storehash: hashref to store to the db
10533: $udom: (optional) domain of user containing the db
10534: $uname: (optional) name of user caontaining the db
10535:
10536: Returns:
10537: 'ok' -> succeeded in storing all keys of $storehash
10538: 'key_exists: <key>' -> failed to anything out of $storehash, as at
10539: least <key> already existed in the db (other
10540: requested keys may also already exist)
10541: 'error: <msg>' -> unable to tie the DB or other error occurred
10542: 'con_lost' -> unable to contact request server
10543: 'refused' -> action was not allowed by remote machine
10544:
10545:
10546: =item *
10547:
10548: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10549: reference filled in from namesp (encrypts the return communication)
10550: ($udom and $uname are optional)
10551:
10552: =item *
10553:
10554: log($udom,$name,$home,$message) : write to permanent log for user; use
10555: critical subroutine
10556:
10557: =item *
10558:
10559: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
10560: array reference filled in from namespace found in domain level on either
10561: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
10562:
10563: =item *
10564:
10565: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
10566: domain level either on specified domain server ($uhome) or primary domain
10567: server ($udom and $uhome are optional)
10568:
10569: =item *
10570:
10571: get_domain_defaults($target_domain) : returns hash with defaults for
10572: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
10573: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
10574: or localauth), initial password or a kerberos realm, language (e.g., en-us).
10575: Values are retrieved from cache (if current), or from domain's configuration.db
10576: (if available), or lastly from values in lonTabs/dns_domain,tab,
10577: or lonTabs/domain.tab.
10578:
10579: %domdefaults = &get_auth_defaults($target_domain);
10580:
10581: =back
10582:
10583: =head2 Network Status Functions
10584:
10585: =over 4
10586:
10587: =item *
10588:
10589: dirlist($uri) : return directory list based on URI
10590:
10591: =item *
10592:
10593: spareserver() : find server with least workload from spare.tab
10594:
10595:
10596: =item *
10597:
10598: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
10599: if there is no corresponding loncapa host.
10600:
10601: =back
10602:
10603:
10604: =head2 Apache Request
10605:
10606: =over 4
10607:
10608: =item *
10609:
10610: ssi($url,%hash) : server side include, does a complete request cycle on url to
10611: localhost, posts hash
10612:
10613: =back
10614:
10615: =head2 Data to String to Data
10616:
10617: =over 4
10618:
10619: =item *
10620:
10621: hash2str(%hash) : convert a hash into a string complete with escaping and '='
10622: and '&' separators, supports elements that are arrayrefs and hashrefs
10623:
10624: =item *
10625:
10626: hashref2str($hashref) : convert a hashref into a string complete with
10627: escaping and '=' and '&' separators, supports elements that are
10628: arrayrefs and hashrefs
10629:
10630: =item *
10631:
10632: arrayref2str($arrayref) : convert an arrayref into a string complete
10633: with escaping and '&' separators, supports elements that are arrayrefs
10634: and hashrefs
10635:
10636: =item *
10637:
10638: str2hash($string) : convert string to hash using unescaping and
10639: splitting on '=' and '&', supports elements that are arrayrefs and
10640: hashrefs
10641:
10642: =item *
10643:
10644: str2array($string) : convert string to hash using unescaping and
10645: splitting on '&', supports elements that are arrayrefs and hashrefs
10646:
10647: =back
10648:
10649: =head2 Logging Routines
10650:
10651: =over 4
10652:
10653: These routines allow one to make log messages in the lonnet.log and
10654: lonnet.perm logfiles.
10655:
10656: =item *
10657:
10658: logtouch() : make sure the logfile, lonnet.log, exists
10659:
10660: =item *
10661:
10662: logthis() : append message to the normal lonnet.log file, it gets
10663: preiodically rolled over and deleted.
10664:
10665: =item *
10666:
10667: logperm() : append a permanent message to lonnet.perm.log, this log
10668: file never gets deleted by any automated portion of the system, only
10669: messages of critical importance should go in here.
10670:
10671: =back
10672:
10673: =head2 General File Helper Routines
10674:
10675: =over 4
10676:
10677: =item *
10678:
10679: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
10680: (a) files in /uploaded
10681: (i) If a local copy of the file exists -
10682: compares modification date of local copy with last-modified date for
10683: definitive version stored on home server for course. If local copy is
10684: stale, requests a new version from the home server and stores it.
10685: If the original has been removed from the home server, then local copy
10686: is unlinked.
10687: (ii) If local copy does not exist -
10688: requests the file from the home server and stores it.
10689:
10690: If $caller is 'uploadrep':
10691: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
10692: for request for files originally uploaded via DOCS.
10693: - returns 'ok' if fresh local copy now available, -1 otherwise.
10694:
10695: Otherwise:
10696: This indicates a call from the content generation phase of the request.
10697: - returns the entire contents of the file or -1.
10698:
10699: (b) files in /res
10700: - returns the entire contents of a file or -1;
10701: it properly subscribes to and replicates the file if neccessary.
10702:
10703:
10704: =item *
10705:
10706: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
10707: reference
10708:
10709: returns either a stat() list of data about the file or an empty list
10710: if the file doesn't exist or couldn't find out about it (connection
10711: problems or user unknown)
10712:
10713: =item *
10714:
10715: filelocation($dir,$file) : returns file system location of a file
10716: based on URI; meant to be "fairly clean" absolute reference, $dir is a
10717: directory that relative $file lookups are to looked in ($dir of /a/dir
10718: and a file of ../bob will become /a/bob)
10719:
10720: =item *
10721:
10722: hreflocation($dir,$file) : returns file system location or a URL; same as
10723: filelocation except for hrefs
10724:
10725: =item *
10726:
10727: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
10728:
10729: =back
10730:
10731: =head2 Usererfile file routines (/uploaded*)
10732:
10733: =over 4
10734:
10735: =item *
10736:
10737: userfileupload(): main rotine for putting a file in a user or course's
10738: filespace, arguments are,
10739:
10740: formname - required - this is the name of the element in $env where the
10741: filename, and the contents of the file to create/modifed exist
10742: the filename is in $env{'form.'.$formname.'.filename'} and the
10743: contents of the file is located in $env{'form.'.$formname}
10744: coursedoc - if true, store the file in the course of the active role
10745: of the current user
10746: subdir - required - subdirectory to put the file in under ../userfiles/
10747: if undefined, it will be placed in "unknown"
10748:
10749: (This routine calls clean_filename() to remove any dangerous
10750: characters from the filename, and then calls finuserfileupload() to
10751: complete the transaction)
10752:
10753: returns either the url of the uploaded file (/uploaded/....) if successful
10754: and /adm/notfound.html if unsuccessful
10755:
10756: =item *
10757:
10758: clean_filename(): routine for cleaing a filename up for storage in
10759: userfile space, argument is:
10760:
10761: filename - proposed filename
10762:
10763: returns: the new clean filename
10764:
10765: =item *
10766:
10767: finishuserfileupload(): routine that creaes and sends the file to
10768: userspace, probably shouldn't be called directly
10769:
10770: docuname: username or courseid of destination for the file
10771: docudom: domain of user/course of destination for the file
10772: formname: same as for userfileupload()
10773: fname: filename (inculding subdirectories) for the file
10774:
10775: returns either the url of the uploaded file (/uploaded/....) if successful
10776: and /adm/notfound.html if unsuccessful
10777:
10778: =item *
10779:
10780: renameuserfile(): renames an existing userfile to a new name
10781:
10782: Args:
10783: docuname: username or courseid of destination for the file
10784: docudom: domain of user/course of destination for the file
10785: old: current file name (including any subdirs under userfiles)
10786: new: desired file name (including any subdirs under userfiles)
10787:
10788: =item *
10789:
10790: mkdiruserfile(): creates a directory is a userfiles dir
10791:
10792: Args:
10793: docuname: username or courseid of destination for the file
10794: docudom: domain of user/course of destination for the file
10795: dir: dir to create (including any subdirs under userfiles)
10796:
10797: =item *
10798:
10799: removeuserfile(): removes a file that exists in userfiles
10800:
10801: Args:
10802: docuname: username or courseid of destination for the file
10803: docudom: domain of user/course of destination for the file
10804: fname: filname to delete (including any subdirs under userfiles)
10805:
10806: =item *
10807:
10808: removeuploadedurl(): convience function for removeuserfile()
10809:
10810: Args:
10811: url: a full /uploaded/... url to delete
10812:
10813: =item *
10814:
10815: get_portfile_permissions():
10816: Args:
10817: domain: domain of user or course contain the portfolio files
10818: user: name of user or num of course contain the portfolio files
10819: Returns:
10820: hashref of a dump of the proper file_permissions.db
10821:
10822:
10823: =item *
10824:
10825: get_access_controls():
10826:
10827: Args:
10828: current_permissions: the hash ref returned from get_portfile_permissions()
10829: group: (optional) the group you want the files associated with
10830: file: (optional) the file you want access info on
10831:
10832: Returns:
10833: a hash (keys are file names) of hashes containing
10834: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
10835: values are XML containing access control settings (see below)
10836:
10837: Internal notes:
10838:
10839: access controls are stored in file_permissions.db as key=value pairs.
10840: key -> path to file/file_name\0uniqueID:scope_end_start
10841: where scope -> public,guest,course,group,domains or users.
10842: end -> UNIX time for end of access (0 -> no end date)
10843: start -> UNIX time for start of access
10844:
10845: value -> XML description of access control
10846: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
10847: <start></start>
10848: <end></end>
10849:
10850: <password></password> for scope type = guest
10851:
10852: <domain></domain> for scope type = course or group
10853: <number></number>
10854: <roles id="">
10855: <role></role>
10856: <access></access>
10857: <section></section>
10858: <group></group>
10859: </roles>
10860:
10861: <dom></dom> for scope type = domains
10862:
10863: <users> for scope type = users
10864: <user>
10865: <uname></uname>
10866: <udom></udom>
10867: </user>
10868: </users>
10869: </scope>
10870:
10871: Access data is also aggregated for each file in an additional key=value pair:
10872: key -> path to file/file_name\0accesscontrol
10873: value -> reference to hash
10874: hash contains key = value pairs
10875: where key = uniqueID:scope_end_start
10876: value = UNIX time record was last updated
10877:
10878: Used to improve speed of look-ups of access controls for each file.
10879:
10880: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
10881:
10882: modify_access_controls():
10883:
10884: Modifies access controls for a portfolio file
10885: Args
10886: 1. file name
10887: 2. reference to hash of required changes,
10888: 3. domain
10889: 4. username
10890: where domain,username are the domain of the portfolio owner
10891: (either a user or a course)
10892:
10893: Returns:
10894: 1. result of additions or updates ('ok' or 'error', with error message).
10895: 2. result of deletions ('ok' or 'error', with error message).
10896: 3. reference to hash of any new or updated access controls.
10897: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
10898: key = integer (inbound ID)
10899: value = uniqueID
10900:
10901: =back
10902:
10903: =head2 HTTP Helper Routines
10904:
10905: =over 4
10906:
10907: =item *
10908:
10909: escape() : unpack non-word characters into CGI-compatible hex codes
10910:
10911: =item *
10912:
10913: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
10914:
10915: =back
10916:
10917: =head1 PRIVATE SUBROUTINES
10918:
10919: =head2 Underlying communication routines (Shouldn't call)
10920:
10921: =over 4
10922:
10923: =item *
10924:
10925: subreply() : tries to pass a message to lonc, returns con_lost if incapable
10926:
10927: =item *
10928:
10929: reply() : uses subreply to send a message to remote machine, logs all failures
10930:
10931: =item *
10932:
10933: critical() : passes a critical message to another server; if cannot
10934: get through then place message in connection buffer directory and
10935: returns con_delayed, if incapable of saving message, returns
10936: con_failed
10937:
10938: =item *
10939:
10940: reconlonc() : tries to reconnect lonc client processes.
10941:
10942: =back
10943:
10944: =head2 Resource Access Logging
10945:
10946: =over 4
10947:
10948: =item *
10949:
10950: flushcourselogs() : flush (save) buffer logs and access logs
10951:
10952: =item *
10953:
10954: courselog($what) : save message for course in hash
10955:
10956: =item *
10957:
10958: courseacclog($what) : save message for course using &courselog(). Perform
10959: special processing for specific resource types (problems, exams, quizzes, etc).
10960:
10961: =item *
10962:
10963: goodbye() : flush course logs and log shutting down; it is called in srm.conf
10964: as a PerlChildExitHandler
10965:
10966: =back
10967:
10968: =head2 Other
10969:
10970: =over 4
10971:
10972: =item *
10973:
10974: symblist($mapname,%newhash) : update symbolic storage links
10975:
10976: =back
10977:
10978: =cut
10979:
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