1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1026 2009/09/05 20:44:01 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 $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
789: $server);
790: if (! $answer) {
791: &logthis("No reply on password change request to $server ".
792: "by $uname in domain $udom.");
793: } elsif ($answer =~ "^ok") {
794: &logthis("$uname in $udom successfully changed their password ".
795: "on $server.");
796: } elsif ($answer =~ "^pwchange_failure") {
797: &logthis("$uname in $udom was unable to change their password ".
798: "on $server. The action was blocked by either lcpasswd ".
799: "or pwchange");
800: } elsif ($answer =~ "^non_authorized") {
801: &logthis("$uname in $udom did not get their password correct when ".
802: "attempting to change it on $server.");
803: } elsif ($answer =~ "^auth_mode_error") {
804: &logthis("$uname in $udom attempted to change their password despite ".
805: "not being locally or internally authenticated on $server.");
806: } elsif ($answer =~ "^unknown_user") {
807: &logthis("$uname in $udom attempted to change their password ".
808: "on $server but were unable to because $server is not ".
809: "their home server.");
810: } elsif ($answer =~ "^refused") {
811: &logthis("$server refused to change $uname in $udom password because ".
812: "it was sent an unencrypted request to change the password.");
813: }
814: return $answer;
815: }
816:
817: # ----------------------- Try to determine user's current authentication scheme
818:
819: sub queryauthenticate {
820: my ($uname,$udom)=@_;
821: my $uhome=&homeserver($uname,$udom);
822: if (!$uhome) {
823: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
824: return 'no_host';
825: }
826: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
827: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
828: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
829: }
830: return $answer;
831: }
832:
833: # --------- Try to authenticate user from domain's lib servers (first this one)
834:
835: sub authenticate {
836: my ($uname,$upass,$udom,$checkdefauth)=@_;
837: $upass=&escape($upass);
838: $uname= &LONCAPA::clean_username($uname);
839: my $uhome=&homeserver($uname,$udom,1);
840: my $newhome;
841: if ((!$uhome) || ($uhome eq 'no_host')) {
842: # Maybe the machine was offline and only re-appeared again recently?
843: &reconlonc();
844: # One more
845: $uhome=&homeserver($uname,$udom,1);
846: if (($uhome eq 'no_host') && $checkdefauth) {
847: if (defined(&domain($udom,'primary'))) {
848: $newhome=&domain($udom,'primary');
849: }
850: if ($newhome ne '') {
851: $uhome = $newhome;
852: }
853: }
854: if ((!$uhome) || ($uhome eq 'no_host')) {
855: &logthis("User $uname at $udom is unknown in authenticate");
856: return 'no_host';
857: }
858: }
859: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
860: if ($answer eq 'authorized') {
861: if ($newhome) {
862: &logthis("User $uname at $udom authorized by $uhome, but needs account");
863: return 'no_account_on_host';
864: } else {
865: &logthis("User $uname at $udom authorized by $uhome");
866: return $uhome;
867: }
868: }
869: if ($answer eq 'non_authorized') {
870: &logthis("User $uname at $udom rejected by $uhome");
871: return 'no_host';
872: }
873: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
874: return 'no_host';
875: }
876:
877: # ---------------------- Find the homebase for a user from domain's lib servers
878:
879: my %homecache;
880: sub homeserver {
881: my ($uname,$udom,$ignoreBadCache)=@_;
882: my $index="$uname:$udom";
883:
884: if (exists($homecache{$index})) { return $homecache{$index}; }
885:
886: my %servers = &get_servers($udom,'library');
887: foreach my $tryserver (keys(%servers)) {
888: next if ($ignoreBadCache ne 'true' &&
889: exists($badServerCache{$tryserver}));
890:
891: my $answer=reply("home:$udom:$uname",$tryserver);
892: if ($answer eq 'found') {
893: delete($badServerCache{$tryserver});
894: return $homecache{$index}=$tryserver;
895: } elsif ($answer eq 'no_host') {
896: $badServerCache{$tryserver}=1;
897: }
898: }
899: return 'no_host';
900: }
901:
902: # ------------------------------------- Find the usernames behind a list of IDs
903:
904: sub idget {
905: my ($udom,@ids)=@_;
906: my %returnhash=();
907:
908: my %servers = &get_servers($udom,'library');
909: foreach my $tryserver (keys(%servers)) {
910: my $idlist=join('&',@ids);
911: $idlist=~tr/A-Z/a-z/;
912: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
913: my @answer=();
914: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
915: @answer=split(/\&/,$reply);
916: } ;
917: my $i;
918: for ($i=0;$i<=$#ids;$i++) {
919: if ($answer[$i]) {
920: $returnhash{$ids[$i]}=$answer[$i];
921: }
922: }
923: }
924: return %returnhash;
925: }
926:
927: # ------------------------------------- Find the IDs behind a list of usernames
928:
929: sub idrget {
930: my ($udom,@unames)=@_;
931: my %returnhash=();
932: foreach my $uname (@unames) {
933: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
934: }
935: return %returnhash;
936: }
937:
938: # ------------------------------- Store away a list of names and associated IDs
939:
940: sub idput {
941: my ($udom,%ids)=@_;
942: my %servers=();
943: foreach my $uname (keys(%ids)) {
944: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
945: my $uhom=&homeserver($uname,$udom);
946: if ($uhom ne 'no_host') {
947: my $id=&escape($ids{$uname});
948: $id=~tr/A-Z/a-z/;
949: my $esc_unam=&escape($uname);
950: if ($servers{$uhom}) {
951: $servers{$uhom}.='&'.$id.'='.$esc_unam;
952: } else {
953: $servers{$uhom}=$id.'='.$esc_unam;
954: }
955: }
956: }
957: foreach my $server (keys(%servers)) {
958: &critical('idput:'.$udom.':'.$servers{$server},$server);
959: }
960: }
961:
962: # ------------------------------dump from db file owned by domainconfig user
963: sub dump_dom {
964: my ($namespace,$udom,$regexp,$range)=@_;
965: if (!$udom) {
966: $udom=$env{'user.domain'};
967: }
968: my %returnhash;
969: if ($udom) {
970: my $uname = &get_domainconfiguser($udom);
971: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
972: }
973: return %returnhash;
974: }
975:
976: # ------------------------------------------ get items from domain db files
977:
978: sub get_dom {
979: my ($namespace,$storearr,$udom,$uhome)=@_;
980: my $items='';
981: foreach my $item (@$storearr) {
982: $items.=&escape($item).'&';
983: }
984: $items=~s/\&$//;
985: if (!$udom) {
986: $udom=$env{'user.domain'};
987: if (defined(&domain($udom,'primary'))) {
988: $uhome=&domain($udom,'primary');
989: } else {
990: undef($uhome);
991: }
992: } else {
993: if (!$uhome) {
994: if (defined(&domain($udom,'primary'))) {
995: $uhome=&domain($udom,'primary');
996: }
997: }
998: }
999: if ($udom && $uhome && ($uhome ne 'no_host')) {
1000: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1001: my %returnhash;
1002: if ($rep eq '' || $rep =~ /^error: 2 /) {
1003: return %returnhash;
1004: }
1005: my @pairs=split(/\&/,$rep);
1006: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1007: return @pairs;
1008: }
1009: my $i=0;
1010: foreach my $item (@$storearr) {
1011: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1012: $i++;
1013: }
1014: return %returnhash;
1015: } else {
1016: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1017: }
1018: }
1019:
1020: # -------------------------------------------- put items in domain db files
1021:
1022: sub put_dom {
1023: my ($namespace,$storehash,$udom,$uhome)=@_;
1024: if (!$udom) {
1025: $udom=$env{'user.domain'};
1026: if (defined(&domain($udom,'primary'))) {
1027: $uhome=&domain($udom,'primary');
1028: } else {
1029: undef($uhome);
1030: }
1031: } else {
1032: if (!$uhome) {
1033: if (defined(&domain($udom,'primary'))) {
1034: $uhome=&domain($udom,'primary');
1035: }
1036: }
1037: }
1038: if ($udom && $uhome && ($uhome ne 'no_host')) {
1039: my $items='';
1040: foreach my $item (keys(%$storehash)) {
1041: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1042: }
1043: $items=~s/\&$//;
1044: return &reply("putdom:$udom:$namespace:$items",$uhome);
1045: } else {
1046: &logthis("put_dom failed - no homeserver and/or domain");
1047: }
1048: }
1049:
1050: # --------------------- newput for items in db file owned by domainconfig user
1051: sub newput_dom {
1052: my ($namespace,$storehash,$udom) = @_;
1053: my $result;
1054: if (!$udom) {
1055: $udom=$env{'user.domain'};
1056: }
1057: if ($udom) {
1058: my $uname = &get_domainconfiguser($udom);
1059: $result = &newput($namespace,$storehash,$udom,$uname);
1060: }
1061: return $result;
1062: }
1063:
1064: # --------------------- delete for items in db file owned by domainconfig user
1065: sub del_dom {
1066: my ($namespace,$storearr,$udom)=@_;
1067: if (ref($storearr) eq 'ARRAY') {
1068: if (!$udom) {
1069: $udom=$env{'user.domain'};
1070: }
1071: if ($udom) {
1072: my $uname = &get_domainconfiguser($udom);
1073: return &del($namespace,$storearr,$udom,$uname);
1074: }
1075: }
1076: }
1077:
1078: # ----------------------------------construct domainconfig user for a domain
1079: sub get_domainconfiguser {
1080: my ($udom) = @_;
1081: return $udom.'-domainconfig';
1082: }
1083:
1084: sub retrieve_inst_usertypes {
1085: my ($udom) = @_;
1086: my (%returnhash,@order);
1087: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1088: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1089: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1090: %returnhash = %{$domdefs{'inststatustypes'}};
1091: @order = @{$domdefs{'inststatusorder'}};
1092: } else {
1093: if (defined(&domain($udom,'primary'))) {
1094: my $uhome=&domain($udom,'primary');
1095: my $rep=&reply("inst_usertypes:$udom",$uhome);
1096: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1097: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1098: return (\%returnhash,\@order);
1099: }
1100: my ($hashitems,$orderitems) = split(/:/,$rep);
1101: my @pairs=split(/\&/,$hashitems);
1102: foreach my $item (@pairs) {
1103: my ($key,$value)=split(/=/,$item,2);
1104: $key = &unescape($key);
1105: next if ($key =~ /^error: 2 /);
1106: $returnhash{$key}=&thaw_unescape($value);
1107: }
1108: my @esc_order = split(/\&/,$orderitems);
1109: foreach my $item (@esc_order) {
1110: push(@order,&unescape($item));
1111: }
1112: } else {
1113: &logthis("get_dom failed - no primary domain server for $udom");
1114: }
1115: }
1116: return (\%returnhash,\@order);
1117: }
1118:
1119: sub is_domainimage {
1120: my ($url) = @_;
1121: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1122: if (&domain($1) ne '') {
1123: return '1';
1124: }
1125: }
1126: return;
1127: }
1128:
1129: sub inst_directory_query {
1130: my ($srch) = @_;
1131: my $udom = $srch->{'srchdomain'};
1132: my %results;
1133: my $homeserver = &domain($udom,'primary');
1134: my $outcome;
1135: if ($homeserver ne '') {
1136: my $queryid=&reply("querysend:instdirsearch:".
1137: &escape($srch->{'srchby'}).':'.
1138: &escape($srch->{'srchterm'}).':'.
1139: &escape($srch->{'srchtype'}),$homeserver);
1140: my $host=&hostname($homeserver);
1141: if ($queryid !~/^\Q$host\E\_/) {
1142: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1143: return;
1144: }
1145: my $response = &get_query_reply($queryid);
1146: my $maxtries = 5;
1147: my $tries = 1;
1148: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1149: $response = &get_query_reply($queryid);
1150: $tries ++;
1151: }
1152:
1153: if (!&error($response) && $response ne 'refused') {
1154: if ($response eq 'unavailable') {
1155: $outcome = $response;
1156: } else {
1157: $outcome = 'ok';
1158: my @matches = split(/\n/,$response);
1159: foreach my $match (@matches) {
1160: my ($key,$value) = split(/=/,$match);
1161: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1162: }
1163: }
1164: }
1165: }
1166: return ($outcome,%results);
1167: }
1168:
1169: sub usersearch {
1170: my ($srch) = @_;
1171: my $dom = $srch->{'srchdomain'};
1172: my %results;
1173: my %libserv = &all_library();
1174: my $query = 'usersearch';
1175: foreach my $tryserver (keys(%libserv)) {
1176: if (&host_domain($tryserver) eq $dom) {
1177: my $host=&hostname($tryserver);
1178: my $queryid=
1179: &reply("querysend:".&escape($query).':'.
1180: &escape($srch->{'srchby'}).':'.
1181: &escape($srch->{'srchtype'}).':'.
1182: &escape($srch->{'srchterm'}),$tryserver);
1183: if ($queryid !~/^\Q$host\E\_/) {
1184: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1185: next;
1186: }
1187: my $reply = &get_query_reply($queryid);
1188: my $maxtries = 1;
1189: my $tries = 1;
1190: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1191: $reply = &get_query_reply($queryid);
1192: $tries ++;
1193: }
1194: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1195: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1196: } else {
1197: my @matches;
1198: if ($reply =~ /\n/) {
1199: @matches = split(/\n/,$reply);
1200: } else {
1201: @matches = split(/\&/,$reply);
1202: }
1203: foreach my $match (@matches) {
1204: my ($uname,$udom,%userhash);
1205: foreach my $entry (split(/:/,$match)) {
1206: my ($key,$value) =
1207: map {&unescape($_);} split(/=/,$entry);
1208: $userhash{$key} = $value;
1209: if ($key eq 'username') {
1210: $uname = $value;
1211: } elsif ($key eq 'domain') {
1212: $udom = $value;
1213: }
1214: }
1215: $results{$uname.':'.$udom} = \%userhash;
1216: }
1217: }
1218: }
1219: }
1220: return %results;
1221: }
1222:
1223: sub get_instuser {
1224: my ($udom,$uname,$id) = @_;
1225: my $homeserver = &domain($udom,'primary');
1226: my ($outcome,%results);
1227: if ($homeserver ne '') {
1228: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1229: &escape($id).':'.&escape($udom),$homeserver);
1230: my $host=&hostname($homeserver);
1231: if ($queryid !~/^\Q$host\E\_/) {
1232: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1233: return;
1234: }
1235: my $response = &get_query_reply($queryid);
1236: my $maxtries = 5;
1237: my $tries = 1;
1238: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1239: $response = &get_query_reply($queryid);
1240: $tries ++;
1241: }
1242: if (!&error($response) && $response ne 'refused') {
1243: if ($response eq 'unavailable') {
1244: $outcome = $response;
1245: } else {
1246: $outcome = 'ok';
1247: my @matches = split(/\n/,$response);
1248: foreach my $match (@matches) {
1249: my ($key,$value) = split(/=/,$match);
1250: $results{&unescape($key)} = &thaw_unescape($value);
1251: }
1252: }
1253: }
1254: }
1255: my %userinfo;
1256: if (ref($results{$uname}) eq 'HASH') {
1257: %userinfo = %{$results{$uname}};
1258: }
1259: return ($outcome,%userinfo);
1260: }
1261:
1262: sub inst_rulecheck {
1263: my ($udom,$uname,$id,$item,$rules) = @_;
1264: my %returnhash;
1265: if ($udom ne '') {
1266: if (ref($rules) eq 'ARRAY') {
1267: @{$rules} = map {&escape($_);} (@{$rules});
1268: my $rulestr = join(':',@{$rules});
1269: my $homeserver=&domain($udom,'primary');
1270: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1271: my $response;
1272: if ($item eq 'username') {
1273: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1274: ':'.&escape($uname).':'.$rulestr,
1275: $homeserver));
1276: } elsif ($item eq 'id') {
1277: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1278: ':'.&escape($id).':'.$rulestr,
1279: $homeserver));
1280: } elsif ($item eq 'selfcreate') {
1281: $response=&unescape(&reply('instselfcreatecheck:'.
1282: &escape($udom).':'.&escape($uname).
1283: ':'.$rulestr,$homeserver));
1284: }
1285: if ($response ne 'refused') {
1286: my @pairs=split(/\&/,$response);
1287: foreach my $item (@pairs) {
1288: my ($key,$value)=split(/=/,$item,2);
1289: $key = &unescape($key);
1290: next if ($key =~ /^error: 2 /);
1291: $returnhash{$key}=&thaw_unescape($value);
1292: }
1293: }
1294: }
1295: }
1296: }
1297: return %returnhash;
1298: }
1299:
1300: sub inst_userrules {
1301: my ($udom,$check) = @_;
1302: my (%ruleshash,@ruleorder);
1303: if ($udom ne '') {
1304: my $homeserver=&domain($udom,'primary');
1305: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1306: my $response;
1307: if ($check eq 'id') {
1308: $response=&reply('instidrules:'.&escape($udom),
1309: $homeserver);
1310: } elsif ($check eq 'email') {
1311: $response=&reply('instemailrules:'.&escape($udom),
1312: $homeserver);
1313: } else {
1314: $response=&reply('instuserrules:'.&escape($udom),
1315: $homeserver);
1316: }
1317: if (($response ne 'refused') && ($response ne 'error') &&
1318: ($response ne 'unknown_cmd') &&
1319: ($response ne 'no_such_host')) {
1320: my ($hashitems,$orderitems) = split(/:/,$response);
1321: my @pairs=split(/\&/,$hashitems);
1322: foreach my $item (@pairs) {
1323: my ($key,$value)=split(/=/,$item,2);
1324: $key = &unescape($key);
1325: next if ($key =~ /^error: 2 /);
1326: $ruleshash{$key}=&thaw_unescape($value);
1327: }
1328: my @esc_order = split(/\&/,$orderitems);
1329: foreach my $item (@esc_order) {
1330: push(@ruleorder,&unescape($item));
1331: }
1332: }
1333: }
1334: }
1335: return (\%ruleshash,\@ruleorder);
1336: }
1337:
1338: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1339:
1340: sub get_domain_defaults {
1341: my ($domain) = @_;
1342: my $cachetime = 60*60*24;
1343: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1344: if (defined($cached)) {
1345: if (ref($result) eq 'HASH') {
1346: return %{$result};
1347: }
1348: }
1349: my %domdefaults;
1350: my %domconfig =
1351: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1352: 'requestcourses','inststatus'],$domain);
1353: if (ref($domconfig{'defaults'}) eq 'HASH') {
1354: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1355: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1356: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1357: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1358: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1359: } else {
1360: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1361: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1362: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1363: }
1364: if (ref($domconfig{'quotas'}) eq 'HASH') {
1365: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1366: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1367: } else {
1368: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1369: }
1370: my @usertools = ('aboutme','blog','portfolio');
1371: foreach my $item (@usertools) {
1372: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1373: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1374: }
1375: }
1376: }
1377: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1378: foreach my $item ('official','unofficial','community') {
1379: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1380: }
1381: }
1382: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1383: foreach my $item ('inststatustypes','inststatusorder') {
1384: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1385: }
1386: }
1387: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1388: $cachetime);
1389: return %domdefaults;
1390: }
1391:
1392: # --------------------------------------------------- Assign a key to a student
1393:
1394: sub assign_access_key {
1395: #
1396: # a valid key looks like uname:udom#comments
1397: # comments are being appended
1398: #
1399: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1400: $kdom=
1401: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1402: $knum=
1403: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1404: $cdom=
1405: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1406: $cnum=
1407: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1408: $udom=$env{'user.name'} unless (defined($udom));
1409: $uname=$env{'user.domain'} unless (defined($uname));
1410: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1411: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1412: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1413: # assigned to this person
1414: # - this should not happen,
1415: # unless something went wrong
1416: # the first time around
1417: # ready to assign
1418: $logentry=$1.'; '.$logentry;
1419: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1420: $kdom,$knum) eq 'ok') {
1421: # key now belongs to user
1422: my $envkey='key.'.$cdom.'_'.$cnum;
1423: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1424: &appenv({'environment.'.$envkey => $ckey});
1425: return 'ok';
1426: } else {
1427: return
1428: 'error: Count not permanently assign key, will need to be re-entered later.';
1429: }
1430: } else {
1431: return 'error: Could not assign key, try again later.';
1432: }
1433: } elsif (!$existing{$ckey}) {
1434: # the key does not exist
1435: return 'error: The key does not exist';
1436: } else {
1437: # the key is somebody else's
1438: return 'error: The key is already in use';
1439: }
1440: }
1441:
1442: # ------------------------------------------ put an additional comment on a key
1443:
1444: sub comment_access_key {
1445: #
1446: # a valid key looks like uname:udom#comments
1447: # comments are being appended
1448: #
1449: my ($ckey,$cdom,$cnum,$logentry)=@_;
1450: $cdom=
1451: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1452: $cnum=
1453: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1454: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1455: if ($existing{$ckey}) {
1456: $existing{$ckey}.='; '.$logentry;
1457: # ready to assign
1458: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1459: $cdom,$cnum) eq 'ok') {
1460: return 'ok';
1461: } else {
1462: return 'error: Count not store comment.';
1463: }
1464: } else {
1465: # the key does not exist
1466: return 'error: The key does not exist';
1467: }
1468: }
1469:
1470: # ------------------------------------------------------ Generate a set of keys
1471:
1472: sub generate_access_keys {
1473: my ($number,$cdom,$cnum,$logentry)=@_;
1474: $cdom=
1475: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1476: $cnum=
1477: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1478: unless (&allowed('mky',$cdom)) { return 0; }
1479: unless (($cdom) && ($cnum)) { return 0; }
1480: if ($number>10000) { return 0; }
1481: sleep(2); # make sure don't get same seed twice
1482: srand(time()^($$+($$<<15))); # from "Programming Perl"
1483: my $total=0;
1484: for (my $i=1;$i<=$number;$i++) {
1485: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1486: sprintf("%lx",int(100000*rand)).'-'.
1487: sprintf("%lx",int(100000*rand));
1488: $newkey=~s/1/g/g; # folks mix up 1 and l
1489: $newkey=~s/0/h/g; # and also 0 and O
1490: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1491: if ($existing{$newkey}) {
1492: $i--;
1493: } else {
1494: if (&put('accesskeys',
1495: { $newkey => '# generated '.localtime().
1496: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1497: '; '.$logentry },
1498: $cdom,$cnum) eq 'ok') {
1499: $total++;
1500: }
1501: }
1502: }
1503: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1504: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1505: return $total;
1506: }
1507:
1508: # ------------------------------------------------------- Validate an accesskey
1509:
1510: sub validate_access_key {
1511: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1512: $cdom=
1513: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1514: $cnum=
1515: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1516: $udom=$env{'user.domain'} unless (defined($udom));
1517: $uname=$env{'user.name'} unless (defined($uname));
1518: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1519: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1520: }
1521:
1522: # ------------------------------------- Find the section of student in a course
1523: sub devalidate_getsection_cache {
1524: my ($udom,$unam,$courseid)=@_;
1525: my $hashid="$udom:$unam:$courseid";
1526: &devalidate_cache_new('getsection',$hashid);
1527: }
1528:
1529: sub courseid_to_courseurl {
1530: my ($courseid) = @_;
1531: #already url style courseid
1532: return $courseid if ($courseid =~ m{^/});
1533:
1534: if (exists($env{'course.'.$courseid.'.num'})) {
1535: my $cnum = $env{'course.'.$courseid.'.num'};
1536: my $cdom = $env{'course.'.$courseid.'.domain'};
1537: return "/$cdom/$cnum";
1538: }
1539:
1540: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1541: if (exists($courseinfo{'num'})) {
1542: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1543: }
1544:
1545: return undef;
1546: }
1547:
1548: sub getsection {
1549: my ($udom,$unam,$courseid)=@_;
1550: my $cachetime=1800;
1551:
1552: my $hashid="$udom:$unam:$courseid";
1553: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1554: if (defined($cached)) { return $result; }
1555:
1556: my %Pending;
1557: my %Expired;
1558: #
1559: # Each role can either have not started yet (pending), be active,
1560: # or have expired.
1561: #
1562: # If there is an active role, we are done.
1563: #
1564: # If there is more than one role which has not started yet,
1565: # choose the one which will start sooner
1566: # If there is one role which has not started yet, return it.
1567: #
1568: # If there is more than one expired role, choose the one which ended last.
1569: # If there is a role which has expired, return it.
1570: #
1571: $courseid = &courseid_to_courseurl($courseid);
1572: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1573: foreach my $key (keys(%roleshash)) {
1574: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1575: my $section=$1;
1576: if ($key eq $courseid.'_st') { $section=''; }
1577: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1578: my $now=time;
1579: if (defined($end) && $end && ($now > $end)) {
1580: $Expired{$end}=$section;
1581: next;
1582: }
1583: if (defined($start) && $start && ($now < $start)) {
1584: $Pending{$start}=$section;
1585: next;
1586: }
1587: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1588: }
1589: #
1590: # Presumedly there will be few matching roles from the above
1591: # loop and the sorting time will be negligible.
1592: if (scalar(keys(%Pending))) {
1593: my ($time) = sort {$a <=> $b} keys(%Pending);
1594: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1595: }
1596: if (scalar(keys(%Expired))) {
1597: my @sorted = sort {$a <=> $b} keys(%Expired);
1598: my $time = pop(@sorted);
1599: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1600: }
1601: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1602: }
1603:
1604: sub save_cache {
1605: &purge_remembered();
1606: #&Apache::loncommon::validate_page();
1607: undef(%env);
1608: undef($env_loaded);
1609: }
1610:
1611: my $to_remember=-1;
1612: my %remembered;
1613: my %accessed;
1614: my $kicks=0;
1615: my $hits=0;
1616: sub make_key {
1617: my ($name,$id) = @_;
1618: if (length($id) > 65
1619: && length(&escape($id)) > 200) {
1620: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1621: }
1622: return &escape($name.':'.$id);
1623: }
1624:
1625: sub devalidate_cache_new {
1626: my ($name,$id,$debug) = @_;
1627: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1628: $id=&make_key($name,$id);
1629: $memcache->delete($id);
1630: delete($remembered{$id});
1631: delete($accessed{$id});
1632: }
1633:
1634: sub is_cached_new {
1635: my ($name,$id,$debug) = @_;
1636: $id=&make_key($name,$id);
1637: if (exists($remembered{$id})) {
1638: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1639: $accessed{$id}=[&gettimeofday()];
1640: $hits++;
1641: return ($remembered{$id},1);
1642: }
1643: my $value = $memcache->get($id);
1644: if (!(defined($value))) {
1645: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1646: return (undef,undef);
1647: }
1648: if ($value eq '__undef__') {
1649: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1650: $value=undef;
1651: }
1652: &make_room($id,$value,$debug);
1653: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1654: return ($value,1);
1655: }
1656:
1657: sub do_cache_new {
1658: my ($name,$id,$value,$time,$debug) = @_;
1659: $id=&make_key($name,$id);
1660: my $setvalue=$value;
1661: if (!defined($setvalue)) {
1662: $setvalue='__undef__';
1663: }
1664: if (!defined($time) ) {
1665: $time=600;
1666: }
1667: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1668: my $result = $memcache->set($id,$setvalue,$time);
1669: if (! $result) {
1670: &logthis("caching of id -> $id failed");
1671: $memcache->disconnect_all();
1672: }
1673: # need to make a copy of $value
1674: &make_room($id,$value,$debug);
1675: return $value;
1676: }
1677:
1678: sub make_room {
1679: my ($id,$value,$debug)=@_;
1680:
1681: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1682: : $value;
1683: if ($to_remember<0) { return; }
1684: $accessed{$id}=[&gettimeofday()];
1685: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1686: my $to_kick;
1687: my $max_time=0;
1688: foreach my $other (keys(%accessed)) {
1689: if (&tv_interval($accessed{$other}) > $max_time) {
1690: $to_kick=$other;
1691: $max_time=&tv_interval($accessed{$other});
1692: }
1693: }
1694: delete($remembered{$to_kick});
1695: delete($accessed{$to_kick});
1696: $kicks++;
1697: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1698: return;
1699: }
1700:
1701: sub purge_remembered {
1702: #&logthis("Tossing ".scalar(keys(%remembered)));
1703: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1704: undef(%remembered);
1705: undef(%accessed);
1706: }
1707: # ------------------------------------- Read an entry from a user's environment
1708:
1709: sub userenvironment {
1710: my ($udom,$unam,@what)=@_;
1711: my $items;
1712: foreach my $item (@what) {
1713: $items.=&escape($item).'&';
1714: }
1715: $items=~s/\&$//;
1716: my %returnhash=();
1717: my $uhome = &homeserver($unam,$udom);
1718: unless ($uhome eq 'no_host') {
1719: my @answer=split(/\&/,
1720: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1721: my $i;
1722: for ($i=0;$i<=$#what;$i++) {
1723: $returnhash{$what[$i]}=&unescape($answer[$i]);
1724: }
1725: }
1726: return %returnhash;
1727: }
1728:
1729: # ---------------------------------------------------------- Get a studentphoto
1730: sub studentphoto {
1731: my ($udom,$unam,$ext) = @_;
1732: my $home=&Apache::lonnet::homeserver($unam,$udom);
1733: if (defined($env{'request.course.id'})) {
1734: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1735: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1736: return(&retrievestudentphoto($udom,$unam,$ext));
1737: } else {
1738: my ($result,$perm_reqd)=
1739: &Apache::lonnet::auto_photo_permission($unam,$udom);
1740: if ($result eq 'ok') {
1741: if (!($perm_reqd eq 'yes')) {
1742: return(&retrievestudentphoto($udom,$unam,$ext));
1743: }
1744: }
1745: }
1746: }
1747: } else {
1748: my ($result,$perm_reqd) =
1749: &Apache::lonnet::auto_photo_permission($unam,$udom);
1750: if ($result eq 'ok') {
1751: if (!($perm_reqd eq 'yes')) {
1752: return(&retrievestudentphoto($udom,$unam,$ext));
1753: }
1754: }
1755: }
1756: return '/adm/lonKaputt/lonlogo_broken.gif';
1757: }
1758:
1759: sub retrievestudentphoto {
1760: my ($udom,$unam,$ext,$type) = @_;
1761: my $home=&Apache::lonnet::homeserver($unam,$udom);
1762: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1763: if ($ret eq 'ok') {
1764: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1765: if ($type eq 'thumbnail') {
1766: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1767: }
1768: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1769: return $tokenurl;
1770: } else {
1771: if ($type eq 'thumbnail') {
1772: return '/adm/lonKaputt/genericstudent_tn.gif';
1773: } else {
1774: return '/adm/lonKaputt/lonlogo_broken.gif';
1775: }
1776: }
1777: }
1778:
1779: # -------------------------------------------------------------------- New chat
1780:
1781: sub chatsend {
1782: my ($newentry,$anon,$group)=@_;
1783: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1784: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1785: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1786: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1787: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1788: &escape($newentry)).':'.$group,$chome);
1789: }
1790:
1791: # ------------------------------------------ Find current version of a resource
1792:
1793: sub getversion {
1794: my $fname=&clutter(shift);
1795: unless ($fname=~/^\/res\//) { return -1; }
1796: return ¤tversion(&filelocation('',$fname));
1797: }
1798:
1799: sub currentversion {
1800: my $fname=shift;
1801: my ($result,$cached)=&is_cached_new('resversion',$fname);
1802: if (defined($cached)) { return $result; }
1803: my $author=$fname;
1804: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1805: my ($udom,$uname)=split(/\//,$author);
1806: my $home=homeserver($uname,$udom);
1807: if ($home eq 'no_host') {
1808: return -1;
1809: }
1810: my $answer=reply("currentversion:$fname",$home);
1811: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1812: return -1;
1813: }
1814: return &do_cache_new('resversion',$fname,$answer,600);
1815: }
1816:
1817: # ----------------------------- Subscribe to a resource, return URL if possible
1818:
1819: sub subscribe {
1820: my $fname=shift;
1821: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1822: $fname=~s/[\n\r]//g;
1823: my $author=$fname;
1824: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1825: my ($udom,$uname)=split(/\//,$author);
1826: my $home=homeserver($uname,$udom);
1827: if ($home eq 'no_host') {
1828: return 'not_found';
1829: }
1830: my $answer=reply("sub:$fname",$home);
1831: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1832: $answer.=' by '.$home;
1833: }
1834: return $answer;
1835: }
1836:
1837: # -------------------------------------------------------------- Replicate file
1838:
1839: sub repcopy {
1840: my $filename=shift;
1841: $filename=~s/\/+/\//g;
1842: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1843: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1844: if ($filename=~m|^/home/httpd/html/userfiles/| or
1845: $filename=~m -^/*(uploaded|editupload)/-) {
1846: return &repcopy_userfile($filename);
1847: }
1848: $filename=~s/[\n\r]//g;
1849: my $transname="$filename.in.transfer";
1850: # FIXME: this should flock
1851: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1852: my $remoteurl=subscribe($filename);
1853: if ($remoteurl =~ /^con_lost by/) {
1854: &logthis("Subscribe returned $remoteurl: $filename");
1855: return 'unavailable';
1856: } elsif ($remoteurl eq 'not_found') {
1857: #&logthis("Subscribe returned not_found: $filename");
1858: return 'not_found';
1859: } elsif ($remoteurl =~ /^rejected by/) {
1860: &logthis("Subscribe returned $remoteurl: $filename");
1861: return 'forbidden';
1862: } elsif ($remoteurl eq 'directory') {
1863: return 'ok';
1864: } else {
1865: my $author=$filename;
1866: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1867: my ($udom,$uname)=split(/\//,$author);
1868: my $home=homeserver($uname,$udom);
1869: unless ($home eq $perlvar{'lonHostID'}) {
1870: my @parts=split(/\//,$filename);
1871: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1872: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1873: &logthis("Malconfiguration for replication: $filename");
1874: return 'bad_request';
1875: }
1876: my $count;
1877: for ($count=5;$count<$#parts;$count++) {
1878: $path.="/$parts[$count]";
1879: if ((-e $path)!=1) {
1880: mkdir($path,0777);
1881: }
1882: }
1883: my $ua=new LWP::UserAgent;
1884: my $request=new HTTP::Request('GET',"$remoteurl");
1885: my $response=$ua->request($request,$transname);
1886: if ($response->is_error()) {
1887: unlink($transname);
1888: my $message=$response->status_line;
1889: &logthis("<font color=\"blue\">WARNING:"
1890: ." LWP get: $message: $filename</font>");
1891: return 'unavailable';
1892: } else {
1893: if ($remoteurl!~/\.meta$/) {
1894: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1895: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1896: if ($mresponse->is_error()) {
1897: unlink($filename.'.meta');
1898: &logthis(
1899: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1900: }
1901: }
1902: rename($transname,$filename);
1903: return 'ok';
1904: }
1905: }
1906: }
1907: }
1908:
1909: # ------------------------------------------------ Get server side include body
1910: sub ssi_body {
1911: my ($filelink,%form)=@_;
1912: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1913: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1914: }
1915: my $output='';
1916: my $response;
1917: if ($filelink=~/^https?\:/) {
1918: ($output,$response)=&externalssi($filelink);
1919: } else {
1920: $filelink .= $filelink=~/\?/ ? '&' : '?';
1921: $filelink .= 'inhibitmenu=yes';
1922: ($output,$response)=&ssi($filelink,%form);
1923: }
1924: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1925: $output=~s/^.*?\<body[^\>]*\>//si;
1926: $output=~s/\<\/body\s*\>.*?$//si;
1927: if (wantarray) {
1928: return ($output, $response);
1929: } else {
1930: return $output;
1931: }
1932: }
1933:
1934: # --------------------------------------------------------- Server Side Include
1935:
1936: sub absolute_url {
1937: my ($host_name) = @_;
1938: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1939: if ($host_name eq '') {
1940: $host_name = $ENV{'SERVER_NAME'};
1941: }
1942: return $protocol.$host_name;
1943: }
1944:
1945: #
1946: # Server side include.
1947: # Parameters:
1948: # fn Possibly encrypted resource name/id.
1949: # form Hash that describes how the rendering should be done
1950: # and other things.
1951: # Returns:
1952: # Scalar context: The content of the response.
1953: # Array context: 2 element list of the content and the full response object.
1954: #
1955: sub ssi {
1956:
1957: my ($fn,%form)=@_;
1958: my $ua=new LWP::UserAgent;
1959: my $request;
1960:
1961: $form{'no_update_last_known'}=1;
1962: &Apache::lonenc::check_encrypt(\$fn);
1963: if (%form) {
1964: $request=new HTTP::Request('POST',&absolute_url().$fn);
1965: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
1966: } else {
1967: $request=new HTTP::Request('GET',&absolute_url().$fn);
1968: }
1969:
1970: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1971: my $response=$ua->request($request);
1972:
1973: if (wantarray) {
1974: return ($response->content, $response);
1975: } else {
1976: return $response->content;
1977: }
1978: }
1979:
1980: sub externalssi {
1981: my ($url)=@_;
1982: my $ua=new LWP::UserAgent;
1983: my $request=new HTTP::Request('GET',$url);
1984: my $response=$ua->request($request);
1985: if (wantarray) {
1986: return ($response->content, $response);
1987: } else {
1988: return $response->content;
1989: }
1990: }
1991:
1992: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1993:
1994: sub allowuploaded {
1995: my ($srcurl,$url)=@_;
1996: $url=&clutter(&declutter($url));
1997: my $dir=$url;
1998: $dir=~s/\/[^\/]+$//;
1999: my %httpref=();
2000: my $httpurl=&hreflocation('',$url);
2001: $httpref{'httpref.'.$httpurl}=$srcurl;
2002: &Apache::lonnet::appenv(\%httpref);
2003: }
2004:
2005: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2006: # input: action, courseID, current domain, intended
2007: # path to file, source of file, instruction to parse file for objects,
2008: # ref to hash for embedded objects,
2009: # ref to hash for codebase of java objects.
2010: #
2011: # output: url to file (if action was uploaddoc),
2012: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2013: #
2014: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2015: # course.
2016: #
2017: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2018: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2019: # course's home server.
2020: #
2021: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2022: # be copied from $source (current location) to
2023: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2024: # and will then be copied to
2025: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2026: # course's home server.
2027: #
2028: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2029: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2030: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2031: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2032: # in course's home server.
2033: #
2034:
2035: sub process_coursefile {
2036: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
2037: my $fetchresult;
2038: my $home=&homeserver($docuname,$docudom);
2039: if ($action eq 'propagate') {
2040: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2041: $home);
2042: } else {
2043: my $fpath = '';
2044: my $fname = $file;
2045: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2046: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2047: my $filepath = &build_filepath($fpath);
2048: if ($action eq 'copy') {
2049: if ($source eq '') {
2050: $fetchresult = 'no source file';
2051: return $fetchresult;
2052: } else {
2053: my $destination = $filepath.'/'.$fname;
2054: rename($source,$destination);
2055: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2056: $home);
2057: }
2058: } elsif ($action eq 'uploaddoc') {
2059: open(my $fh,'>'.$filepath.'/'.$fname);
2060: print $fh $env{'form.'.$source};
2061: close($fh);
2062: if ($parser eq 'parse') {
2063: my $mm = new File::MMagic;
2064: my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
2065: if ($mime_type eq 'text/html') {
2066: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2067: unless ($parse_result eq 'ok') {
2068: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2069: }
2070: }
2071: }
2072: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2073: $home);
2074: if ($fetchresult eq 'ok') {
2075: return '/uploaded/'.$fpath.'/'.$fname;
2076: } else {
2077: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2078: ' to host '.$home.': '.$fetchresult);
2079: return '/adm/notfound.html';
2080: }
2081: }
2082: }
2083: unless ( $fetchresult eq 'ok') {
2084: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2085: ' to host '.$home.': '.$fetchresult);
2086: }
2087: return $fetchresult;
2088: }
2089:
2090: sub build_filepath {
2091: my ($fpath) = @_;
2092: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2093: unless ($fpath eq '') {
2094: my @parts=split('/',$fpath);
2095: foreach my $part (@parts) {
2096: $filepath.= '/'.$part;
2097: if ((-e $filepath)!=1) {
2098: mkdir($filepath,0777);
2099: }
2100: }
2101: }
2102: return $filepath;
2103: }
2104:
2105: sub store_edited_file {
2106: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2107: my $file = $primary_url;
2108: $file =~ s#^/uploaded/$docudom/$docuname/##;
2109: my $fpath = '';
2110: my $fname = $file;
2111: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2112: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2113: my $filepath = &build_filepath($fpath);
2114: open(my $fh,'>'.$filepath.'/'.$fname);
2115: print $fh $content;
2116: close($fh);
2117: my $home=&homeserver($docuname,$docudom);
2118: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2119: $home);
2120: if ($$fetchresult eq 'ok') {
2121: return '/uploaded/'.$fpath.'/'.$fname;
2122: } else {
2123: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2124: ' to host '.$home.': '.$$fetchresult);
2125: return '/adm/notfound.html';
2126: }
2127: }
2128:
2129: sub clean_filename {
2130: my ($fname,$args)=@_;
2131: # Replace Windows backslashes by forward slashes
2132: $fname=~s/\\/\//g;
2133: if (!$args->{'keep_path'}) {
2134: # Get rid of everything but the actual filename
2135: $fname=~s/^.*\/([^\/]+)$/$1/;
2136: }
2137: # Replace spaces by underscores
2138: $fname=~s/\s+/\_/g;
2139: # Replace all other weird characters by nothing
2140: $fname=~s{[^/\w\.\-]}{}g;
2141: # Replace all .\d. sequences with _\d. so they no longer look like version
2142: # numbers
2143: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2144: return $fname;
2145: }
2146: #This Function check if a Image max 400px width and height 500px. If not then scale the image down
2147: sub resizeImage {
2148: my($img_url) = @_;
2149: my $ima = Image::Magick->new;
2150: $ima->Read($img_url);
2151: if($ima->Get('width') > 400)
2152: {
2153: my $factor = $ima->Get('width')/400;
2154: $ima->Scale( width=>400, height=>$ima->Get('height')/$factor );
2155: }
2156: if($ima->Get('height') > 500)
2157: {
2158: my $factor = $ima->Get('height')/500;
2159: $ima->Scale( width=>$ima->Get('width')/$factor, height=>500);
2160: }
2161:
2162: $ima->Write($img_url);
2163: }
2164:
2165: #Wrapper function for userphotoupload
2166: sub userphotoupload
2167: {
2168: my($formname,$subdir) = @_;
2169: $upload_photo_form = 1;
2170: return &userfileupload($formname,undef,$subdir);
2171: }
2172:
2173: # --------------- Take an uploaded file and put it into the userfiles directory
2174: # input: $formname - the contents of the file are in $env{"form.$formname"}
2175: # the desired filenam is in $env{"form.$formname.filename"}
2176: # $coursedoc - if true up to the current course
2177: # if false
2178: # $subdir - directory in userfile to store the file into
2179: # $parser - instruction to parse file for objects ($parser = parse)
2180: # $allfiles - reference to hash for embedded objects
2181: # $codebase - reference to hash for codebase of java objects
2182: # $desuname - username for permanent storage of uploaded file
2183: # $dsetudom - domain for permanaent storage of uploaded file
2184: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2185: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2186: #
2187: # output: url of file in userspace, or error: <message>
2188: # or /adm/notfound.html if failure to upload occurse
2189:
2190:
2191: sub userfileupload {
2192: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
2193: $destudom,$thumbwidth,$thumbheight)=@_;
2194: if (!defined($subdir)) { $subdir='unknown'; }
2195: my $fname=$env{'form.'.$formname.'.filename'};
2196: $fname=&clean_filename($fname);
2197: # See if there is anything left
2198: unless ($fname) { return 'error: no uploaded file'; }
2199: chop($env{'form.'.$formname});
2200: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2201: my $now = time;
2202: my $filepath = 'tmp/helprequests/'.$now;
2203: my @parts=split(/\//,$filepath);
2204: my $fullpath = $perlvar{'lonDaemons'};
2205: for (my $i=0;$i<@parts;$i++) {
2206: $fullpath .= '/'.$parts[$i];
2207: if ((-e $fullpath)!=1) {
2208: mkdir($fullpath,0777);
2209: }
2210: }
2211: open(my $fh,'>'.$fullpath.'/'.$fname);
2212: print $fh $env{'form.'.$formname};
2213: close($fh);
2214: return $fullpath.'/'.$fname;
2215: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2216: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2217: '_'.$env{'user.domain'}.'/pending';
2218: my @parts=split(/\//,$filepath);
2219: my $fullpath = $perlvar{'lonDaemons'};
2220: for (my $i=0;$i<@parts;$i++) {
2221: $fullpath .= '/'.$parts[$i];
2222: if ((-e $fullpath)!=1) {
2223: mkdir($fullpath,0777);
2224: }
2225: }
2226: open(my $fh,'>'.$fullpath.'/'.$fname);
2227: print $fh $env{'form.'.$formname};
2228: close($fh);
2229: return $fullpath.'/'.$fname;
2230: }
2231: if ($subdir eq 'scantron') {
2232: $fname = 'scantron_orig_'.$fname;
2233: } else {
2234: # Create the directory if not present
2235: $fname="$subdir/$fname";
2236: }
2237: if ($coursedoc) {
2238: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2239: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2240: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2241: return &finishuserfileupload($docuname,$docudom,
2242: $formname,$fname,$parser,$allfiles,
2243: $codebase,$thumbwidth,$thumbheight);
2244: } else {
2245: $fname=$env{'form.folder'}.'/'.$fname;
2246: return &process_coursefile('uploaddoc',$docuname,$docudom,
2247: $fname,$formname,$parser,
2248: $allfiles,$codebase);
2249: }
2250: } elsif (defined($destuname)) {
2251: my $docuname=$destuname;
2252: my $docudom=$destudom;
2253: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2254: $parser,$allfiles,$codebase,
2255: $thumbwidth,$thumbheight);
2256:
2257: } else {
2258: my $docuname=$env{'user.name'};
2259: my $docudom=$env{'user.domain'};
2260: if (exists($env{'form.group'})) {
2261: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2262: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2263: }
2264: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2265: $parser,$allfiles,$codebase,
2266: $thumbwidth,$thumbheight);
2267: }
2268: }
2269:
2270: sub finishuserfileupload {
2271: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2272: $thumbwidth,$thumbheight) = @_;
2273: my $path=$docudom.'/'.$docuname.'/';
2274: my $filepath=$perlvar{'lonDocRoot'};
2275:
2276: my ($fnamepath,$file,$fetchthumb);
2277: $file=$fname;
2278: if ($fname=~m|/|) {
2279: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2280: $path.=$fnamepath.'/';
2281: }
2282: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2283: my $count;
2284: for ($count=4;$count<=$#parts;$count++) {
2285: $filepath.="/$parts[$count]";
2286: if ((-e $filepath)!=1) {
2287: mkdir($filepath,0777);
2288: }
2289: }
2290:
2291: # Save the file
2292: {
2293: if (!open(FH,'>'.$filepath.'/'.$file)) {
2294: &logthis('Failed to create '.$filepath.'/'.$file);
2295: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2296: return '/adm/notfound.html';
2297: }
2298: if (!print FH ($env{'form.'.$formname})) {
2299: &logthis('Failed to write to '.$filepath.'/'.$file);
2300: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2301: return '/adm/notfound.html';
2302: }
2303: close(FH);
2304: if($upload_photo_form==1)
2305: {
2306: resizeImage($filepath.'/'.$file);
2307: $upload_photo_form = 0;
2308: }
2309: }
2310: if ($parser eq 'parse') {
2311: my $mm = new File::MMagic;
2312: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2313: if ($mime_type eq 'text/html') {
2314: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2315: $allfiles,$codebase);
2316: unless ($parse_result eq 'ok') {
2317: &logthis('Failed to parse '.$filepath.$file.
2318: ' for embedded media: '.$parse_result);
2319: }
2320: }
2321: }
2322: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2323: my $input = $filepath.'/'.$file;
2324: my $output = $filepath.'/'.'tn-'.$file;
2325: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2326: system("convert -sample $thumbsize $input $output");
2327: if (-e $filepath.'/'.'tn-'.$file) {
2328: $fetchthumb = 1;
2329: }
2330: }
2331:
2332: # Notify homeserver to grep it
2333: #
2334: my $docuhome=&homeserver($docuname,$docudom);
2335: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2336: if ($fetchresult eq 'ok') {
2337: if ($fetchthumb) {
2338: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2339: if ($thumbresult ne 'ok') {
2340: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2341: $docuhome.': '.$thumbresult);
2342: }
2343: }
2344: #
2345: # Return the URL to it
2346: return '/uploaded/'.$path.$file;
2347: } else {
2348: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2349: ': '.$fetchresult);
2350: return '/adm/notfound.html';
2351: }
2352: }
2353:
2354: sub extract_embedded_items {
2355: my ($fullpath,$allfiles,$codebase,$content) = @_;
2356: my @state = ();
2357: my %javafiles = (
2358: codebase => '',
2359: code => '',
2360: archive => ''
2361: );
2362: my %mediafiles = (
2363: src => '',
2364: movie => '',
2365: );
2366: my $p;
2367: if ($content) {
2368: $p = HTML::LCParser->new($content);
2369: } else {
2370: $p = HTML::LCParser->new($fullpath);
2371: }
2372: while (my $t=$p->get_token()) {
2373: if ($t->[0] eq 'S') {
2374: my ($tagname, $attr) = ($t->[1],$t->[2]);
2375: push(@state, $tagname);
2376: if (lc($tagname) eq 'allow') {
2377: &add_filetype($allfiles,$attr->{'src'},'src');
2378: }
2379: if (lc($tagname) eq 'img') {
2380: &add_filetype($allfiles,$attr->{'src'},'src');
2381: }
2382: if (lc($tagname) eq 'a') {
2383: &add_filetype($allfiles,$attr->{'href'},'href');
2384: }
2385: if (lc($tagname) eq 'script') {
2386: if ($attr->{'archive'} =~ /\.jar$/i) {
2387: &add_filetype($allfiles,$attr->{'archive'},'archive');
2388: } else {
2389: &add_filetype($allfiles,$attr->{'src'},'src');
2390: }
2391: }
2392: if (lc($tagname) eq 'link') {
2393: if (lc($attr->{'rel'}) eq 'stylesheet') {
2394: &add_filetype($allfiles,$attr->{'href'},'href');
2395: }
2396: }
2397: if (lc($tagname) eq 'object' ||
2398: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2399: foreach my $item (keys(%javafiles)) {
2400: $javafiles{$item} = '';
2401: }
2402: }
2403: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2404: my $name = lc($attr->{'name'});
2405: foreach my $item (keys(%javafiles)) {
2406: if ($name eq $item) {
2407: $javafiles{$item} = $attr->{'value'};
2408: last;
2409: }
2410: }
2411: foreach my $item (keys(%mediafiles)) {
2412: if ($name eq $item) {
2413: &add_filetype($allfiles, $attr->{'value'}, 'value');
2414: last;
2415: }
2416: }
2417: }
2418: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2419: foreach my $item (keys(%javafiles)) {
2420: if ($attr->{$item}) {
2421: $javafiles{$item} = $attr->{$item};
2422: last;
2423: }
2424: }
2425: foreach my $item (keys(%mediafiles)) {
2426: if ($attr->{$item}) {
2427: &add_filetype($allfiles,$attr->{$item},$item);
2428: last;
2429: }
2430: }
2431: }
2432: } elsif ($t->[0] eq 'E') {
2433: my ($tagname) = ($t->[1]);
2434: if ($javafiles{'codebase'} ne '') {
2435: $javafiles{'codebase'} .= '/';
2436: }
2437: if (lc($tagname) eq 'applet' ||
2438: lc($tagname) eq 'object' ||
2439: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2440: ) {
2441: foreach my $item (keys(%javafiles)) {
2442: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2443: my $file=$javafiles{'codebase'}.$javafiles{$item};
2444: &add_filetype($allfiles,$file,$item);
2445: }
2446: }
2447: }
2448: pop @state;
2449: }
2450: }
2451: return 'ok';
2452: }
2453:
2454: sub add_filetype {
2455: my ($allfiles,$file,$type)=@_;
2456: if (exists($allfiles->{$file})) {
2457: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2458: push(@{$allfiles->{$file}}, &escape($type));
2459: }
2460: } else {
2461: @{$allfiles->{$file}} = (&escape($type));
2462: }
2463: }
2464:
2465: sub removeuploadedurl {
2466: my ($url)=@_;
2467: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2468: return &removeuserfile($uname,$udom,$fname);
2469: }
2470:
2471: sub removeuserfile {
2472: my ($docuname,$docudom,$fname)=@_;
2473: my $home=&homeserver($docuname,$docudom);
2474: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2475: if ($result eq 'ok') {
2476: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2477: my $metafile = $fname.'.meta';
2478: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2479: my $url = "/uploaded/$docudom/$docuname/$fname";
2480: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2481: my $sqlresult =
2482: &update_portfolio_table($docuname,$docudom,$file,
2483: 'portfolio_metadata',$group,
2484: 'delete');
2485: }
2486: }
2487: return $result;
2488: }
2489:
2490: sub mkdiruserfile {
2491: my ($docuname,$docudom,$dir)=@_;
2492: my $home=&homeserver($docuname,$docudom);
2493: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2494: }
2495:
2496: sub renameuserfile {
2497: my ($docuname,$docudom,$old,$new)=@_;
2498: my $home=&homeserver($docuname,$docudom);
2499: my $result = &reply("renameuserfile:$docudom:$docuname:".
2500: &escape("$old").':'.&escape("$new"),$home);
2501: if ($result eq 'ok') {
2502: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2503: my $oldmeta = $old.'.meta';
2504: my $newmeta = $new.'.meta';
2505: my $metaresult =
2506: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2507: my $url = "/uploaded/$docudom/$docuname/$old";
2508: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2509: my $sqlresult =
2510: &update_portfolio_table($docuname,$docudom,$file,
2511: 'portfolio_metadata',$group,
2512: 'delete');
2513: }
2514: }
2515: return $result;
2516: }
2517:
2518: # ------------------------------------------------------------------------- Log
2519:
2520: sub log {
2521: my ($dom,$nam,$hom,$what)=@_;
2522: return critical("log:$dom:$nam:$what",$hom);
2523: }
2524:
2525: # ------------------------------------------------------------------ Course Log
2526: #
2527: # This routine flushes several buffers of non-mission-critical nature
2528: #
2529:
2530: sub flushcourselogs {
2531: &logthis('Flushing log buffers');
2532: #
2533: # course logs
2534: # This is a log of all transactions in a course, which can be used
2535: # for data mining purposes
2536: #
2537: # It also collects the courseid database, which lists last transaction
2538: # times and course titles for all courseids
2539: #
2540: my %courseidbuffer=();
2541: foreach my $crsid (keys(%courselogs)) {
2542: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2543: &escape($courselogs{$crsid}),
2544: $coursehombuf{$crsid}) eq 'ok') {
2545: delete $courselogs{$crsid};
2546: } else {
2547: &logthis('Failed to flush log buffer for '.$crsid);
2548: if (length($courselogs{$crsid})>40000) {
2549: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2550: " exceeded maximum size, deleting.</font>");
2551: delete $courselogs{$crsid};
2552: }
2553: }
2554: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2555: 'description' => $coursedescrbuf{$crsid},
2556: 'inst_code' => $courseinstcodebuf{$crsid},
2557: 'type' => $coursetypebuf{$crsid},
2558: 'owner' => $courseownerbuf{$crsid},
2559: };
2560: }
2561: #
2562: # Write course id database (reverse lookup) to homeserver of courses
2563: # Is used in pickcourse
2564: #
2565: foreach my $crs_home (keys(%courseidbuffer)) {
2566: my $response = &courseidput(&host_domain($crs_home),
2567: $courseidbuffer{$crs_home},
2568: $crs_home,'timeonly');
2569: }
2570: #
2571: # File accesses
2572: # Writes to the dynamic metadata of resources to get hit counts, etc.
2573: #
2574: foreach my $entry (keys(%accesshash)) {
2575: if ($entry =~ /___count$/) {
2576: my ($dom,$name);
2577: ($dom,$name,undef)=
2578: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2579: if (! defined($dom) || $dom eq '' ||
2580: ! defined($name) || $name eq '') {
2581: my $cid = $env{'request.course.id'};
2582: $dom = $env{'request.'.$cid.'.domain'};
2583: $name = $env{'request.'.$cid.'.num'};
2584: }
2585: my $value = $accesshash{$entry};
2586: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2587: my %temphash=($url => $value);
2588: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2589: if ($result eq 'ok') {
2590: delete $accesshash{$entry};
2591: } elsif ($result eq 'unknown_cmd') {
2592: # Target server has old code running on it.
2593: my %temphash=($entry => $value);
2594: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2595: delete $accesshash{$entry};
2596: }
2597: }
2598: } else {
2599: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2600: my %temphash=($entry => $accesshash{$entry});
2601: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2602: delete $accesshash{$entry};
2603: }
2604: }
2605: }
2606: #
2607: # Roles
2608: # Reverse lookup of user roles for course faculty/staff and co-authorship
2609: #
2610: foreach my $entry (keys(%userrolehash)) {
2611: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2612: split(/\:/,$entry);
2613: if (&Apache::lonnet::put('nohist_userroles',
2614: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2615: $rudom,$runame) eq 'ok') {
2616: delete $userrolehash{$entry};
2617: }
2618: }
2619: #
2620: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2621: #
2622: my %domrolebuffer = ();
2623: foreach my $entry (keys(%domainrolehash)) {
2624: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2625: if ($domrolebuffer{$rudom}) {
2626: $domrolebuffer{$rudom}.='&'.&escape($entry).
2627: '='.&escape($domainrolehash{$entry});
2628: } else {
2629: $domrolebuffer{$rudom}.=&escape($entry).
2630: '='.&escape($domainrolehash{$entry});
2631: }
2632: delete $domainrolehash{$entry};
2633: }
2634: foreach my $dom (keys(%domrolebuffer)) {
2635: my %servers = &get_servers($dom,'library');
2636: foreach my $tryserver (keys(%servers)) {
2637: unless (&reply('domroleput:'.$dom.':'.
2638: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2639: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2640: }
2641: }
2642: }
2643: $dumpcount++;
2644: }
2645:
2646: sub courselog {
2647: my $what=shift;
2648: $what=time.':'.$what;
2649: unless ($env{'request.course.id'}) { return ''; }
2650: $coursedombuf{$env{'request.course.id'}}=
2651: $env{'course.'.$env{'request.course.id'}.'.domain'};
2652: $coursenumbuf{$env{'request.course.id'}}=
2653: $env{'course.'.$env{'request.course.id'}.'.num'};
2654: $coursehombuf{$env{'request.course.id'}}=
2655: $env{'course.'.$env{'request.course.id'}.'.home'};
2656: $coursedescrbuf{$env{'request.course.id'}}=
2657: $env{'course.'.$env{'request.course.id'}.'.description'};
2658: $courseinstcodebuf{$env{'request.course.id'}}=
2659: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2660: $courseownerbuf{$env{'request.course.id'}}=
2661: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2662: $coursetypebuf{$env{'request.course.id'}}=
2663: $env{'course.'.$env{'request.course.id'}.'.type'};
2664: if (defined $courselogs{$env{'request.course.id'}}) {
2665: $courselogs{$env{'request.course.id'}}.='&'.$what;
2666: } else {
2667: $courselogs{$env{'request.course.id'}}.=$what;
2668: }
2669: if (length($courselogs{$env{'request.course.id'}})>4048) {
2670: &flushcourselogs();
2671: }
2672: }
2673:
2674: sub courseacclog {
2675: my $fnsymb=shift;
2676: unless ($env{'request.course.id'}) { return ''; }
2677: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2678: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2679: $what.=':POST';
2680: # FIXME: Probably ought to escape things....
2681: foreach my $key (keys(%env)) {
2682: if ($key=~/^form\.(.*)/) {
2683: my $formitem = $1;
2684: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2685: $what.=':'.$formitem.'='.$env{$key};
2686: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2687: $what.=':'.$formitem.'='.$env{$key};
2688: }
2689: }
2690: }
2691: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2692: # FIXME: We should not be depending on a form parameter that someone
2693: # editing lonsearchcat.pm might change in the future.
2694: if ($env{'form.phase'} eq 'course_search') {
2695: $what.= ':POST';
2696: # FIXME: Probably ought to escape things....
2697: foreach my $element ('courseexp','crsfulltext','crsrelated',
2698: 'crsdiscuss') {
2699: $what.=':'.$element.'='.$env{'form.'.$element};
2700: }
2701: }
2702: }
2703: &courselog($what);
2704: }
2705:
2706: sub countacc {
2707: my $url=&declutter(shift);
2708: return if (! defined($url) || $url eq '');
2709: unless ($env{'request.course.id'}) { return ''; }
2710: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2711: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2712: $accesshash{$key}++;
2713: }
2714:
2715: sub linklog {
2716: my ($from,$to)=@_;
2717: $from=&declutter($from);
2718: $to=&declutter($to);
2719: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2720: $accesshash{$to.'___'.$from.'___goto'}=1;
2721: }
2722:
2723: sub userrolelog {
2724: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2725: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2726: ($trole=~/^in/) || ($trole=~/^cc/) ||
2727: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2728: ($trole=~/^ta/)) {
2729: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2730: $userrolehash
2731: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2732: =$tend.':'.$tstart;
2733: }
2734: if (($env{'request.role'} =~ /dc\./) &&
2735: (($trole=~/^au/) || ($trole=~/^in/) ||
2736: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2737: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2738: $userrolehash
2739: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2740: =$tend.':'.$tstart;
2741: }
2742: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2743: ($trole=~/^li/) || ($trole=~/^li/) ||
2744: ($trole=~/^au/) || ($trole=~/^dg/) ||
2745: ($trole=~/^sc/)) {
2746: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2747: $domainrolehash
2748: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2749: = $tend.':'.$tstart;
2750: }
2751: }
2752:
2753: sub courserolelog {
2754: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2755: if (($trole eq 'cc') || ($trole eq 'in') ||
2756: ($trole eq 'ep') || ($trole eq 'ad') ||
2757: ($trole eq 'ta') || ($trole eq 'st') ||
2758: ($trole=~/^cr/) || ($trole eq 'gr')) {
2759: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2760: my $cdom = $1;
2761: my $cnum = $2;
2762: my $sec = $3;
2763: my $namespace = 'rolelog';
2764: my %storehash = (
2765: role => $trole,
2766: start => $tstart,
2767: end => $tend,
2768: selfenroll => $selfenroll,
2769: context => $context,
2770: );
2771: if ($trole eq 'gr') {
2772: $namespace = 'groupslog';
2773: $storehash{'group'} = $sec;
2774: } else {
2775: $storehash{'section'} = $sec;
2776: }
2777: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2778: if (($trole ne 'st') || ($sec ne '')) {
2779: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
2780: }
2781: }
2782: }
2783: return;
2784: }
2785:
2786: sub get_course_adv_roles {
2787: my ($cid,$codes) = @_;
2788: $cid=$env{'request.course.id'} unless (defined($cid));
2789: my %coursehash=&coursedescription($cid);
2790: my $crstype = &Apache::loncommon::course_type($cid);
2791: my %nothide=();
2792: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2793: if ($user !~ /:/) {
2794: $nothide{join(':',split(/[\@]/,$user))}=1;
2795: } else {
2796: $nothide{$user}=1;
2797: }
2798: }
2799: my %returnhash=();
2800: my %dumphash=
2801: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2802: my $now=time;
2803: my %privileged;
2804: foreach my $entry (keys(%dumphash)) {
2805: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2806: if (($tstart) && ($tstart<0)) { next; }
2807: if (($tend) && ($tend<$now)) { next; }
2808: if (($tstart) && ($now<$tstart)) { next; }
2809: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2810: if ($username eq '' || $domain eq '') { next; }
2811: unless (ref($privileged{$domain}) eq 'HASH') {
2812: my %dompersonnel =
2813: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2814: $privileged{$domain} = {};
2815: foreach my $server (keys(%dompersonnel)) {
2816: if (ref($dompersonnel{$server}) eq 'HASH') {
2817: foreach my $user (keys(%{$dompersonnel{$server}})) {
2818: my ($trole,$uname,$udom) = split(/:/,$user);
2819: $privileged{$udom}{$uname} = 1;
2820: }
2821: }
2822: }
2823: }
2824: if ((exists($privileged{$domain}{$username})) &&
2825: (!$nothide{$username.':'.$domain})) { next; }
2826: if ($role eq 'cr') { next; }
2827: if ($codes) {
2828: if ($section) { $role .= ':'.$section; }
2829: if ($returnhash{$role}) {
2830: $returnhash{$role}.=','.$username.':'.$domain;
2831: } else {
2832: $returnhash{$role}=$username.':'.$domain;
2833: }
2834: } else {
2835: my $key=&plaintext($role,$crstype);
2836: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
2837: if ($returnhash{$key}) {
2838: $returnhash{$key}.=','.$username.':'.$domain;
2839: } else {
2840: $returnhash{$key}=$username.':'.$domain;
2841: }
2842: }
2843: }
2844: return %returnhash;
2845: }
2846:
2847: sub get_my_roles {
2848: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2849: unless (defined($uname)) { $uname=$env{'user.name'}; }
2850: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2851: my (%dumphash,%nothide);
2852: if ($context eq 'userroles') {
2853: %dumphash = &dump('roles',$udom,$uname);
2854: } else {
2855: %dumphash=
2856: &dump('nohist_userroles',$udom,$uname);
2857: if ($hidepriv) {
2858: my %coursehash=&coursedescription($udom.'_'.$uname);
2859: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2860: if ($user !~ /:/) {
2861: $nothide{join(':',split(/[\@]/,$user))} = 1;
2862: } else {
2863: $nothide{$user} = 1;
2864: }
2865: }
2866: }
2867: }
2868: my %returnhash=();
2869: my $now=time;
2870: my %privileged;
2871: foreach my $entry (keys(%dumphash)) {
2872: my ($role,$tend,$tstart);
2873: if ($context eq 'userroles') {
2874: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2875: } else {
2876: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2877: }
2878: if (($tstart) && ($tstart<0)) { next; }
2879: my $status = 'active';
2880: if (($tend) && ($tend<=$now)) {
2881: $status = 'previous';
2882: }
2883: if (($tstart) && ($now<$tstart)) {
2884: $status = 'future';
2885: }
2886: if (ref($types) eq 'ARRAY') {
2887: if (!grep(/^\Q$status\E$/,@{$types})) {
2888: next;
2889: }
2890: } else {
2891: if ($status ne 'active') {
2892: next;
2893: }
2894: }
2895: my ($rolecode,$username,$domain,$section,$area);
2896: if ($context eq 'userroles') {
2897: ($area,$rolecode) = split(/_/,$entry);
2898: (undef,$domain,$username,$section) = split(/\//,$area);
2899: } else {
2900: ($role,$username,$domain,$section) = split(/\:/,$entry);
2901: }
2902: if (ref($roledoms) eq 'ARRAY') {
2903: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2904: next;
2905: }
2906: }
2907: if (ref($roles) eq 'ARRAY') {
2908: if (!grep(/^\Q$role\E$/,@{$roles})) {
2909: if ($role =~ /^cr\//) {
2910: if (!grep(/^cr$/,@{$roles})) {
2911: next;
2912: }
2913: } else {
2914: next;
2915: }
2916: }
2917: }
2918: if ($hidepriv) {
2919: if ($context eq 'userroles') {
2920: if ((&privileged($username,$domain)) &&
2921: (!$nothide{$username.':'.$domain})) {
2922: next;
2923: }
2924: } else {
2925: unless (ref($privileged{$domain}) eq 'HASH') {
2926: my %dompersonnel =
2927: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
2928: $privileged{$domain} = {};
2929: if (keys(%dompersonnel)) {
2930: foreach my $server (keys(%dompersonnel)) {
2931: if (ref($dompersonnel{$server}) eq 'HASH') {
2932: foreach my $user (keys(%{$dompersonnel{$server}})) {
2933: my ($trole,$uname,$udom) = split(/:/,$user);
2934: $privileged{$udom}{$uname} = $trole;
2935: }
2936: }
2937: }
2938: }
2939: }
2940: if (exists($privileged{$domain}{$username})) {
2941: if (!$nothide{$username.':'.$domain}) {
2942: next;
2943: }
2944: }
2945: }
2946: }
2947: if ($withsec) {
2948: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2949: $tstart.':'.$tend;
2950: } else {
2951: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2952: }
2953: }
2954: return %returnhash;
2955: }
2956:
2957: # ----------------------------------------------------- Frontpage Announcements
2958: #
2959: #
2960:
2961: sub postannounce {
2962: my ($server,$text)=@_;
2963: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2964: unless ($text=~/\w/) { $text=''; }
2965: return &reply('setannounce:'.&escape($text),$server);
2966: }
2967:
2968: sub getannounce {
2969:
2970: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2971: my $announcement='';
2972: while (my $line = <$fh>) { $announcement .= $line; }
2973: close($fh);
2974: if ($announcement=~/\w/) {
2975: return
2976: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2977: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2978: } else {
2979: return '';
2980: }
2981: } else {
2982: return '';
2983: }
2984: }
2985:
2986: # ---------------------------------------------------------- Course ID routines
2987: # Deal with domain's nohist_courseid.db files
2988: #
2989:
2990: sub courseidput {
2991: my ($domain,$storehash,$coursehome,$caller) = @_;
2992: my $outcome;
2993: if ($caller eq 'timeonly') {
2994: my $cids = '';
2995: foreach my $item (keys(%$storehash)) {
2996: $cids.=&escape($item).'&';
2997: }
2998: $cids=~s/\&$//;
2999: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3000: $coursehome);
3001: } else {
3002: my $items = '';
3003: foreach my $item (keys(%$storehash)) {
3004: $items.= &escape($item).'='.
3005: &freeze_escape($$storehash{$item}).'&';
3006: }
3007: $items=~s/\&$//;
3008: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3009: $coursehome);
3010: }
3011: if ($outcome eq 'unknown_cmd') {
3012: my $what;
3013: foreach my $cid (keys(%$storehash)) {
3014: $what .= &escape($cid).'=';
3015: foreach my $item ('description','inst_code','owner','type') {
3016: $what .= &escape($storehash->{$cid}{$item}).':';
3017: }
3018: $what =~ s/\:$/&/;
3019: }
3020: $what =~ s/\&$//;
3021: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3022: } else {
3023: return $outcome;
3024: }
3025: }
3026:
3027: sub courseiddump {
3028: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3029: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3030: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,$cloneonly)=@_;
3031: my $as_hash = 1;
3032: my %returnhash;
3033: if (!$domfilter) { $domfilter=''; }
3034: my %libserv = &all_library();
3035: foreach my $tryserver (keys(%libserv)) {
3036: if ( ( $hostidflag == 1
3037: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3038: || (!defined($hostidflag)) ) {
3039:
3040: if (($domfilter eq '') ||
3041: (&host_domain($tryserver) eq $domfilter)) {
3042: my $rep =
3043: &reply('courseiddump:'.&host_domain($tryserver).':'.
3044: $sincefilter.':'.&escape($descfilter).':'.
3045: &escape($instcodefilter).':'.&escape($ownerfilter).
3046: ':'.&escape($coursefilter).':'.&escape($typefilter).
3047: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3048: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3049: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3050: &escape($cc_clone).':'.$cloneonly,$tryserver);
3051: my @pairs=split(/\&/,$rep);
3052: foreach my $item (@pairs) {
3053: my ($key,$value)=split(/\=/,$item,2);
3054: $key = &unescape($key);
3055: next if ($key =~ /^error: 2 /);
3056: my $result = &thaw_unescape($value);
3057: if (ref($result) eq 'HASH') {
3058: $returnhash{$key}=$result;
3059: } else {
3060: my @responses = split(/:/,$value);
3061: my @items = ('description','inst_code','owner','type');
3062: for (my $i=0; $i<@responses; $i++) {
3063: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3064: }
3065: }
3066: }
3067: }
3068: }
3069: }
3070: return %returnhash;
3071: }
3072:
3073: # ---------------------------------------------------------- DC e-mail
3074:
3075: sub dcmailput {
3076: my ($domain,$msgid,$message,$server)=@_;
3077: my $status = &Apache::lonnet::critical(
3078: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3079: &escape($message),$server);
3080: return $status;
3081: }
3082:
3083: sub dcmaildump {
3084: my ($dom,$startdate,$enddate,$senders) = @_;
3085: my %returnhash=();
3086:
3087: if (defined(&domain($dom,'primary'))) {
3088: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3089: &escape($enddate).':';
3090: my @esc_senders=map { &escape($_)} @$senders;
3091: $cmd.=&escape(join('&',@esc_senders));
3092: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3093: my ($key,$value) = split(/\=/,$line,2);
3094: if (($key) && ($value)) {
3095: $returnhash{&unescape($key)} = &unescape($value);
3096: }
3097: }
3098: }
3099: return %returnhash;
3100: }
3101: # ---------------------------------------------------------- Domain roles
3102:
3103: sub get_domain_roles {
3104: my ($dom,$roles,$startdate,$enddate)=@_;
3105: if ((!defined($startdate)) || ($startdate eq '')) {
3106: $startdate = '.';
3107: }
3108: if ((!defined($enddate)) || ($enddate eq '')) {
3109: $enddate = '.';
3110: }
3111: my $rolelist;
3112: if (ref($roles) eq 'ARRAY') {
3113: $rolelist = join(':',@{$roles});
3114: }
3115: my %personnel = ();
3116:
3117: my %servers = &get_servers($dom,'library');
3118: foreach my $tryserver (keys(%servers)) {
3119: %{$personnel{$tryserver}}=();
3120: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3121: &escape($startdate).':'.
3122: &escape($enddate).':'.
3123: &escape($rolelist), $tryserver))) {
3124: my ($key,$value) = split(/\=/,$line,2);
3125: if (($key) && ($value)) {
3126: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3127: }
3128: }
3129: }
3130: return %personnel;
3131: }
3132:
3133: # ----------------------------------------------------------- Check out an item
3134:
3135: sub get_first_access {
3136: my ($type,$argsymb)=@_;
3137: my ($symb,$courseid,$udom,$uname)=&whichuser();
3138: if ($argsymb) { $symb=$argsymb; }
3139: my ($map,$id,$res)=&decode_symb($symb);
3140: if ($type eq 'course') {
3141: $res='course';
3142: } elsif ($type eq 'map') {
3143: $res=&symbread($map);
3144: } else {
3145: $res=$symb;
3146: }
3147: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3148: return $times{"$courseid\0$res"};
3149: }
3150:
3151: sub set_first_access {
3152: my ($type)=@_;
3153: my ($symb,$courseid,$udom,$uname)=&whichuser();
3154: my ($map,$id,$res)=&decode_symb($symb);
3155: if ($type eq 'course') {
3156: $res='course';
3157: } elsif ($type eq 'map') {
3158: $res=&symbread($map);
3159: } else {
3160: $res=$symb;
3161: }
3162: my $firstaccess=&get_first_access($type,$symb);
3163: if (!$firstaccess) {
3164: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3165: }
3166: return 'already_set';
3167: }
3168:
3169: sub checkout {
3170: my ($symb,$tuname,$tudom,$tcrsid)=@_;
3171: my $now=time;
3172: my $lonhost=$perlvar{'lonHostID'};
3173: my $infostr=&escape(
3174: 'CHECKOUTTOKEN&'.
3175: $tuname.'&'.
3176: $tudom.'&'.
3177: $tcrsid.'&'.
3178: $symb.'&'.
3179: $now.'&'.$ENV{'REMOTE_ADDR'});
3180: my $token=&reply('tmpput:'.$infostr,$lonhost);
3181: if ($token=~/^error\:/) {
3182: &logthis("<font color=\"blue\">WARNING: ".
3183: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
3184: "</font>");
3185: return '';
3186: }
3187:
3188: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
3189: $token=~tr/a-z/A-Z/;
3190:
3191: my %infohash=('resource.0.outtoken' => $token,
3192: 'resource.0.checkouttime' => $now,
3193: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
3194:
3195: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3196: return '';
3197: } else {
3198: &logthis("<font color=\"blue\">WARNING: ".
3199: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
3200: "</font>");
3201: }
3202:
3203: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3204: &escape('Checkout '.$infostr.' - '.
3205: $token)) ne 'ok') {
3206: return '';
3207: } else {
3208: &logthis("<font color=\"blue\">WARNING: ".
3209: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
3210: "</font>");
3211: }
3212: return $token;
3213: }
3214:
3215: # ------------------------------------------------------------ Check in an item
3216:
3217: sub checkin {
3218: my $token=shift;
3219: my $now=time;
3220: my ($ta,$tb,$lonhost)=split(/\*/,$token);
3221: $lonhost=~tr/A-Z/a-z/;
3222: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
3223: $dtoken=~s/\W/\_/g;
3224: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
3225: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
3226:
3227: unless (($tuname) && ($tudom)) {
3228: &logthis('Check in '.$token.' ('.$dtoken.') failed');
3229: return '';
3230: }
3231:
3232: unless (&allowed('mgr',$tcrsid)) {
3233: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3234: $env{'user.name'}.' - '.$env{'user.domain'});
3235: return '';
3236: }
3237:
3238: my %infohash=('resource.0.intoken' => $token,
3239: 'resource.0.checkintime' => $now,
3240: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3241:
3242: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3243: return '';
3244: }
3245:
3246: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3247: &escape('Checkin - '.$token)) ne 'ok') {
3248: return '';
3249: }
3250:
3251: return ($symb,$tuname,$tudom,$tcrsid);
3252: }
3253:
3254: # --------------------------------------------- Set Expire Date for Spreadsheet
3255:
3256: sub expirespread {
3257: my ($uname,$udom,$stype,$usymb)=@_;
3258: my $cid=$env{'request.course.id'};
3259: if ($cid) {
3260: my $now=time;
3261: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3262: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3263: $env{'course.'.$cid.'.num'}.
3264: ':nohist_expirationdates:'.
3265: &escape($key).'='.$now,
3266: $env{'course.'.$cid.'.home'})
3267: }
3268: return 'ok';
3269: }
3270:
3271: # ----------------------------------------------------- Devalidate Spreadsheets
3272:
3273: sub devalidate {
3274: my ($symb,$uname,$udom)=@_;
3275: my $cid=$env{'request.course.id'};
3276: if ($cid) {
3277: # delete the stored spreadsheets for
3278: # - the student level sheet of this user in course's homespace
3279: # - the assessment level sheet for this resource
3280: # for this user in user's homespace
3281: # - current conditional state info
3282: my $key=$uname.':'.$udom.':';
3283: my $status=
3284: &del('nohist_calculatedsheets',
3285: [$key.'studentcalc:'],
3286: $env{'course.'.$cid.'.domain'},
3287: $env{'course.'.$cid.'.num'})
3288: .' '.
3289: &del('nohist_calculatedsheets_'.$cid,
3290: [$key.'assesscalc:'.$symb],$udom,$uname);
3291: unless ($status eq 'ok ok') {
3292: &logthis('Could not devalidate spreadsheet '.
3293: $uname.' at '.$udom.' for '.
3294: $symb.': '.$status);
3295: }
3296: &delenv('user.state.'.$cid);
3297: }
3298: }
3299:
3300: sub get_scalar {
3301: my ($string,$end) = @_;
3302: my $value;
3303: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3304: $value = $1;
3305: } elsif ($$string =~ s/^([^&]*?)&//) {
3306: $value = $1;
3307: }
3308: return &unescape($value);
3309: }
3310:
3311: sub array2str {
3312: my (@array) = @_;
3313: my $result=&arrayref2str(\@array);
3314: $result=~s/^__ARRAY_REF__//;
3315: $result=~s/__END_ARRAY_REF__$//;
3316: return $result;
3317: }
3318:
3319: sub arrayref2str {
3320: my ($arrayref) = @_;
3321: my $result='__ARRAY_REF__';
3322: foreach my $elem (@$arrayref) {
3323: if(ref($elem) eq 'ARRAY') {
3324: $result.=&arrayref2str($elem).'&';
3325: } elsif(ref($elem) eq 'HASH') {
3326: $result.=&hashref2str($elem).'&';
3327: } elsif(ref($elem)) {
3328: #print("Got a ref of ".(ref($elem))." skipping.");
3329: } else {
3330: $result.=&escape($elem).'&';
3331: }
3332: }
3333: $result=~s/\&$//;
3334: $result .= '__END_ARRAY_REF__';
3335: return $result;
3336: }
3337:
3338: sub hash2str {
3339: my (%hash) = @_;
3340: my $result=&hashref2str(\%hash);
3341: $result=~s/^__HASH_REF__//;
3342: $result=~s/__END_HASH_REF__$//;
3343: return $result;
3344: }
3345:
3346: sub hashref2str {
3347: my ($hashref)=@_;
3348: my $result='__HASH_REF__';
3349: foreach my $key (sort(keys(%$hashref))) {
3350: if (ref($key) eq 'ARRAY') {
3351: $result.=&arrayref2str($key).'=';
3352: } elsif (ref($key) eq 'HASH') {
3353: $result.=&hashref2str($key).'=';
3354: } elsif (ref($key)) {
3355: $result.='=';
3356: #print("Got a ref of ".(ref($key))." skipping.");
3357: } else {
3358: if ($key) {$result.=&escape($key).'=';} else { last; }
3359: }
3360:
3361: if(ref($hashref->{$key}) eq 'ARRAY') {
3362: $result.=&arrayref2str($hashref->{$key}).'&';
3363: } elsif(ref($hashref->{$key}) eq 'HASH') {
3364: $result.=&hashref2str($hashref->{$key}).'&';
3365: } elsif(ref($hashref->{$key})) {
3366: $result.='&';
3367: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3368: } else {
3369: $result.=&escape($hashref->{$key}).'&';
3370: }
3371: }
3372: $result=~s/\&$//;
3373: $result .= '__END_HASH_REF__';
3374: return $result;
3375: }
3376:
3377: sub str2hash {
3378: my ($string)=@_;
3379: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3380: return %$hash;
3381: }
3382:
3383: sub str2hashref {
3384: my ($string) = @_;
3385:
3386: my %hash;
3387:
3388: if($string !~ /^__HASH_REF__/) {
3389: if (! ($string eq '' || !defined($string))) {
3390: $hash{'error'}='Not hash reference';
3391: }
3392: return (\%hash, $string);
3393: }
3394:
3395: $string =~ s/^__HASH_REF__//;
3396:
3397: while($string !~ /^__END_HASH_REF__/) {
3398: #key
3399: my $key='';
3400: if($string =~ /^__HASH_REF__/) {
3401: ($key, $string)=&str2hashref($string);
3402: if(defined($key->{'error'})) {
3403: $hash{'error'}='Bad data';
3404: return (\%hash, $string);
3405: }
3406: } elsif($string =~ /^__ARRAY_REF__/) {
3407: ($key, $string)=&str2arrayref($string);
3408: if($key->[0] eq 'Array reference error') {
3409: $hash{'error'}='Bad data';
3410: return (\%hash, $string);
3411: }
3412: } else {
3413: $string =~ s/^(.*?)=//;
3414: $key=&unescape($1);
3415: }
3416: $string =~ s/^=//;
3417:
3418: #value
3419: my $value='';
3420: if($string =~ /^__HASH_REF__/) {
3421: ($value, $string)=&str2hashref($string);
3422: if(defined($value->{'error'})) {
3423: $hash{'error'}='Bad data';
3424: return (\%hash, $string);
3425: }
3426: } elsif($string =~ /^__ARRAY_REF__/) {
3427: ($value, $string)=&str2arrayref($string);
3428: if($value->[0] eq 'Array reference error') {
3429: $hash{'error'}='Bad data';
3430: return (\%hash, $string);
3431: }
3432: } else {
3433: $value=&get_scalar(\$string,'__END_HASH_REF__');
3434: }
3435: $string =~ s/^&//;
3436:
3437: $hash{$key}=$value;
3438: }
3439:
3440: $string =~ s/^__END_HASH_REF__//;
3441:
3442: return (\%hash, $string);
3443: }
3444:
3445: sub str2array {
3446: my ($string)=@_;
3447: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3448: return @$array;
3449: }
3450:
3451: sub str2arrayref {
3452: my ($string) = @_;
3453: my @array;
3454:
3455: if($string !~ /^__ARRAY_REF__/) {
3456: if (! ($string eq '' || !defined($string))) {
3457: $array[0]='Array reference error';
3458: }
3459: return (\@array, $string);
3460: }
3461:
3462: $string =~ s/^__ARRAY_REF__//;
3463:
3464: while($string !~ /^__END_ARRAY_REF__/) {
3465: my $value='';
3466: if($string =~ /^__HASH_REF__/) {
3467: ($value, $string)=&str2hashref($string);
3468: if(defined($value->{'error'})) {
3469: $array[0] ='Array reference error';
3470: return (\@array, $string);
3471: }
3472: } elsif($string =~ /^__ARRAY_REF__/) {
3473: ($value, $string)=&str2arrayref($string);
3474: if($value->[0] eq 'Array reference error') {
3475: $array[0] ='Array reference error';
3476: return (\@array, $string);
3477: }
3478: } else {
3479: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3480: }
3481: $string =~ s/^&//;
3482:
3483: push(@array, $value);
3484: }
3485:
3486: $string =~ s/^__END_ARRAY_REF__//;
3487:
3488: return (\@array, $string);
3489: }
3490:
3491: # -------------------------------------------------------------------Temp Store
3492:
3493: sub tmpreset {
3494: my ($symb,$namespace,$domain,$stuname) = @_;
3495: if (!$symb) {
3496: $symb=&symbread();
3497: if (!$symb) { $symb= $env{'request.url'}; }
3498: }
3499: $symb=escape($symb);
3500:
3501: if (!$namespace) { $namespace=$env{'request.state'}; }
3502: $namespace=~s/\//\_/g;
3503: $namespace=~s/\W//g;
3504:
3505: if (!$domain) { $domain=$env{'user.domain'}; }
3506: if (!$stuname) { $stuname=$env{'user.name'}; }
3507: if ($domain eq 'public' && $stuname eq 'public') {
3508: $stuname=$ENV{'REMOTE_ADDR'};
3509: }
3510: my $path=$perlvar{'lonDaemons'}.'/tmp';
3511: my %hash;
3512: if (tie(%hash,'GDBM_File',
3513: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3514: &GDBM_WRCREAT(),0640)) {
3515: foreach my $key (keys(%hash)) {
3516: if ($key=~ /:$symb/) {
3517: delete($hash{$key});
3518: }
3519: }
3520: }
3521: }
3522:
3523: sub tmpstore {
3524: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3525:
3526: if (!$symb) {
3527: $symb=&symbread();
3528: if (!$symb) { $symb= $env{'request.url'}; }
3529: }
3530: $symb=escape($symb);
3531:
3532: if (!$namespace) {
3533: # I don't think we would ever want to store this for a course.
3534: # it seems this will only be used if we don't have a course.
3535: #$namespace=$env{'request.course.id'};
3536: #if (!$namespace) {
3537: $namespace=$env{'request.state'};
3538: #}
3539: }
3540: $namespace=~s/\//\_/g;
3541: $namespace=~s/\W//g;
3542: if (!$domain) { $domain=$env{'user.domain'}; }
3543: if (!$stuname) { $stuname=$env{'user.name'}; }
3544: if ($domain eq 'public' && $stuname eq 'public') {
3545: $stuname=$ENV{'REMOTE_ADDR'};
3546: }
3547: my $now=time;
3548: my %hash;
3549: my $path=$perlvar{'lonDaemons'}.'/tmp';
3550: if (tie(%hash,'GDBM_File',
3551: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3552: &GDBM_WRCREAT(),0640)) {
3553: $hash{"version:$symb"}++;
3554: my $version=$hash{"version:$symb"};
3555: my $allkeys='';
3556: foreach my $key (keys(%$storehash)) {
3557: $allkeys.=$key.':';
3558: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3559: }
3560: $hash{"$version:$symb:timestamp"}=$now;
3561: $allkeys.='timestamp';
3562: $hash{"$version:keys:$symb"}=$allkeys;
3563: if (untie(%hash)) {
3564: return 'ok';
3565: } else {
3566: return "error:$!";
3567: }
3568: } else {
3569: return "error:$!";
3570: }
3571: }
3572:
3573: # -----------------------------------------------------------------Temp Restore
3574:
3575: sub tmprestore {
3576: my ($symb,$namespace,$domain,$stuname) = @_;
3577:
3578: if (!$symb) {
3579: $symb=&symbread();
3580: if (!$symb) { $symb= $env{'request.url'}; }
3581: }
3582: $symb=escape($symb);
3583:
3584: if (!$namespace) { $namespace=$env{'request.state'}; }
3585:
3586: if (!$domain) { $domain=$env{'user.domain'}; }
3587: if (!$stuname) { $stuname=$env{'user.name'}; }
3588: if ($domain eq 'public' && $stuname eq 'public') {
3589: $stuname=$ENV{'REMOTE_ADDR'};
3590: }
3591: my %returnhash;
3592: $namespace=~s/\//\_/g;
3593: $namespace=~s/\W//g;
3594: my %hash;
3595: my $path=$perlvar{'lonDaemons'}.'/tmp';
3596: if (tie(%hash,'GDBM_File',
3597: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3598: &GDBM_READER(),0640)) {
3599: my $version=$hash{"version:$symb"};
3600: $returnhash{'version'}=$version;
3601: my $scope;
3602: for ($scope=1;$scope<=$version;$scope++) {
3603: my $vkeys=$hash{"$scope:keys:$symb"};
3604: my @keys=split(/:/,$vkeys);
3605: my $key;
3606: $returnhash{"$scope:keys"}=$vkeys;
3607: foreach $key (@keys) {
3608: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3609: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3610: }
3611: }
3612: if (!(untie(%hash))) {
3613: return "error:$!";
3614: }
3615: } else {
3616: return "error:$!";
3617: }
3618: return %returnhash;
3619: }
3620:
3621: # ----------------------------------------------------------------------- Store
3622:
3623: sub store {
3624: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3625: my $home='';
3626:
3627: if ($stuname) { $home=&homeserver($stuname,$domain); }
3628:
3629: $symb=&symbclean($symb);
3630: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3631:
3632: if (!$domain) { $domain=$env{'user.domain'}; }
3633: if (!$stuname) { $stuname=$env{'user.name'}; }
3634:
3635: &devalidate($symb,$stuname,$domain);
3636:
3637: $symb=escape($symb);
3638: if (!$namespace) {
3639: unless ($namespace=$env{'request.course.id'}) {
3640: return '';
3641: }
3642: }
3643: if (!$home) { $home=$env{'user.home'}; }
3644:
3645: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3646: $$storehash{'host'}=$perlvar{'lonHostID'};
3647:
3648: my $namevalue='';
3649: foreach my $key (keys(%$storehash)) {
3650: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3651: }
3652: $namevalue=~s/\&$//;
3653: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3654: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3655: }
3656:
3657: # -------------------------------------------------------------- Critical Store
3658:
3659: sub cstore {
3660: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3661: my $home='';
3662:
3663: if ($stuname) { $home=&homeserver($stuname,$domain); }
3664:
3665: $symb=&symbclean($symb);
3666: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3667:
3668: if (!$domain) { $domain=$env{'user.domain'}; }
3669: if (!$stuname) { $stuname=$env{'user.name'}; }
3670:
3671: &devalidate($symb,$stuname,$domain);
3672:
3673: $symb=escape($symb);
3674: if (!$namespace) {
3675: unless ($namespace=$env{'request.course.id'}) {
3676: return '';
3677: }
3678: }
3679: if (!$home) { $home=$env{'user.home'}; }
3680:
3681: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3682: $$storehash{'host'}=$perlvar{'lonHostID'};
3683:
3684: my $namevalue='';
3685: foreach my $key (keys(%$storehash)) {
3686: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3687: }
3688: $namevalue=~s/\&$//;
3689: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3690: return critical
3691: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3692: }
3693:
3694: # --------------------------------------------------------------------- Restore
3695:
3696: sub restore {
3697: my ($symb,$namespace,$domain,$stuname) = @_;
3698: my $home='';
3699:
3700: if ($stuname) { $home=&homeserver($stuname,$domain); }
3701:
3702: if (!$symb) {
3703: unless ($symb=escape(&symbread())) { return ''; }
3704: } else {
3705: $symb=&escape(&symbclean($symb));
3706: }
3707: if (!$namespace) {
3708: unless ($namespace=$env{'request.course.id'}) {
3709: return '';
3710: }
3711: }
3712: if (!$domain) { $domain=$env{'user.domain'}; }
3713: if (!$stuname) { $stuname=$env{'user.name'}; }
3714: if (!$home) { $home=$env{'user.home'}; }
3715: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3716:
3717: my %returnhash=();
3718: foreach my $line (split(/\&/,$answer)) {
3719: my ($name,$value)=split(/\=/,$line);
3720: $returnhash{&unescape($name)}=&thaw_unescape($value);
3721: }
3722: my $version;
3723: for ($version=1;$version<=$returnhash{'version'};$version++) {
3724: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3725: $returnhash{$item}=$returnhash{$version.':'.$item};
3726: }
3727: }
3728: return %returnhash;
3729: }
3730:
3731: # ---------------------------------------------------------- Course Description
3732:
3733: sub coursedescription {
3734: my ($courseid,$args)=@_;
3735: $courseid=~s/^\///;
3736: $courseid=~s/\_/\//g;
3737: my ($cdomain,$cnum)=split(/\//,$courseid);
3738: my $chome=&homeserver($cnum,$cdomain);
3739: my $normalid=$cdomain.'_'.$cnum;
3740: # need to always cache even if we get errors otherwise we keep
3741: # trying and trying and trying to get the course description.
3742: my %envhash=();
3743: my %returnhash=();
3744:
3745: my $expiretime=600;
3746: if ($env{'request.course.id'} eq $normalid) {
3747: $expiretime=120;
3748: }
3749:
3750: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3751: if (!$args->{'freshen_cache'}
3752: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3753: foreach my $key (keys(%env)) {
3754: next if ($key !~ /^\Q$prefix\E(.*)/);
3755: my ($setting) = $1;
3756: $returnhash{$setting} = $env{$key};
3757: }
3758: return %returnhash;
3759: }
3760:
3761: # get the data agin
3762: if (!$args->{'one_time'}) {
3763: $envhash{'course.'.$normalid.'.last_cache'}=time;
3764: }
3765:
3766: if ($chome ne 'no_host') {
3767: %returnhash=&dump('environment',$cdomain,$cnum);
3768: if (!exists($returnhash{'con_lost'})) {
3769: $returnhash{'home'}= $chome;
3770: $returnhash{'domain'} = $cdomain;
3771: $returnhash{'num'} = $cnum;
3772: if (!defined($returnhash{'type'})) {
3773: $returnhash{'type'} = 'Course';
3774: }
3775: while (my ($name,$value) = each %returnhash) {
3776: $envhash{'course.'.$normalid.'.'.$name}=$value;
3777: }
3778: $returnhash{'url'}=&clutter($returnhash{'url'});
3779: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3780: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3781: $envhash{'course.'.$normalid.'.home'}=$chome;
3782: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3783: $envhash{'course.'.$normalid.'.num'}=$cnum;
3784: }
3785: }
3786: if (!$args->{'one_time'}) {
3787: &appenv(\%envhash);
3788: }
3789: return %returnhash;
3790: }
3791:
3792: # -------------------------------------------------See if a user is privileged
3793:
3794: sub privileged {
3795: my ($username,$domain)=@_;
3796: my $rolesdump=&reply("dump:$domain:$username:roles",
3797: &homeserver($username,$domain));
3798: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3799: my $now=time;
3800: if ($rolesdump ne '') {
3801: foreach my $entry (split(/&/,$rolesdump)) {
3802: if ($entry!~/^rolesdef_/) {
3803: my ($area,$role)=split(/=/,$entry);
3804: $area=~s/\_\w\w$//;
3805: my ($trole,$tend,$tstart)=split(/_/,$role);
3806: if (($trole eq 'dc') || ($trole eq 'su')) {
3807: my $active=1;
3808: if ($tend) {
3809: if ($tend<$now) { $active=0; }
3810: }
3811: if ($tstart) {
3812: if ($tstart>$now) { $active=0; }
3813: }
3814: if ($active) { return 1; }
3815: }
3816: }
3817: }
3818: }
3819: return 0;
3820: }
3821:
3822: # -------------------------------------------------------- Get user privileges
3823:
3824: sub rolesinit {
3825: my ($domain,$username,$authhost)=@_;
3826: my %userroles;
3827: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3828: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return \%userroles; }
3829: my %allroles=();
3830: my %allgroups=();
3831: my $now=time;
3832: %userroles = ('user.login.time' => $now);
3833: my $group_privs;
3834:
3835: if ($rolesdump ne '') {
3836: foreach my $entry (split(/&/,$rolesdump)) {
3837: if ($entry!~/^rolesdef_/) {
3838: my ($area,$role)=split(/=/,$entry);
3839: $area=~s/\_\w\w$//;
3840: my ($trole,$tend,$tstart,$group_privs);
3841: if ($role=~/^cr/) {
3842: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3843: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3844: ($tend,$tstart)=split('_',$trest);
3845: } else {
3846: $trole=$role;
3847: }
3848: } elsif ($role =~ m|^gr/|) {
3849: ($trole,$tend,$tstart) = split(/_/,$role);
3850: ($trole,$group_privs) = split(/\//,$trole);
3851: $group_privs = &unescape($group_privs);
3852: } else {
3853: ($trole,$tend,$tstart)=split(/_/,$role);
3854: }
3855: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3856: $username);
3857: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3858: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3859: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3860: if (($area ne '') && ($trole ne '')) {
3861: my $spec=$trole.'.'.$area;
3862: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3863: if ($trole =~ /^cr\//) {
3864: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3865: } elsif ($trole eq 'gr') {
3866: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3867: } else {
3868: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3869: }
3870: }
3871: }
3872: }
3873: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3874: $userroles{'user.adv'} = $adv;
3875: $userroles{'user.author'} = $author;
3876: $env{'user.adv'}=$adv;
3877: }
3878: return \%userroles;
3879: }
3880:
3881: sub set_arearole {
3882: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3883: # log the associated role with the area
3884: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3885: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3886: }
3887:
3888: sub custom_roleprivs {
3889: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3890: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3891: my $homsvr=homeserver($rauthor,$rdomain);
3892: if (&hostname($homsvr) ne '') {
3893: my ($rdummy,$roledef)=
3894: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3895: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3896: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3897: if (defined($syspriv)) {
3898: $$allroles{'cm./'}.=':'.$syspriv;
3899: $$allroles{$spec.'./'}.=':'.$syspriv;
3900: }
3901: if ($tdomain ne '') {
3902: if (defined($dompriv)) {
3903: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3904: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3905: }
3906: if (($trest ne '') && (defined($coursepriv))) {
3907: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3908: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3909: }
3910: }
3911: }
3912: }
3913: }
3914:
3915: sub group_roleprivs {
3916: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3917: my $access = 1;
3918: my $now = time;
3919: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3920: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3921: if ($access) {
3922: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3923: $$allgroups{$course}{$group} .=':'.$group_privs;
3924: }
3925: }
3926:
3927: sub standard_roleprivs {
3928: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3929: if (defined($pr{$trole.':s'})) {
3930: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3931: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3932: }
3933: if ($tdomain ne '') {
3934: if (defined($pr{$trole.':d'})) {
3935: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3936: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3937: }
3938: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3939: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3940: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3941: }
3942: }
3943: }
3944:
3945: sub set_userprivs {
3946: my ($userroles,$allroles,$allgroups) = @_;
3947: my $author=0;
3948: my $adv=0;
3949: my %grouproles = ();
3950: if (keys(%{$allgroups}) > 0) {
3951: foreach my $role (keys(%{$allroles})) {
3952: my ($trole,$area,$sec,$extendedarea);
3953: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3954: $trole = $1;
3955: $area = $2;
3956: $sec = $3;
3957: $extendedarea = $area.$sec;
3958: if (exists($$allgroups{$area})) {
3959: foreach my $group (keys(%{$$allgroups{$area}})) {
3960: my $spec = $trole.'.'.$extendedarea;
3961: $grouproles{$spec.'.'.$area.'/'.$group} =
3962: $$allgroups{$area}{$group};
3963: }
3964: }
3965: }
3966: }
3967: }
3968: foreach my $group (keys(%grouproles)) {
3969: $$allroles{$group} = $grouproles{$group};
3970: }
3971: foreach my $role (keys(%{$allroles})) {
3972: my %thesepriv;
3973: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3974: foreach my $item (split(/:/,$$allroles{$role})) {
3975: if ($item ne '') {
3976: my ($privilege,$restrictions)=split(/&/,$item);
3977: if ($restrictions eq '') {
3978: $thesepriv{$privilege}='F';
3979: } elsif ($thesepriv{$privilege} ne 'F') {
3980: $thesepriv{$privilege}.=$restrictions;
3981: }
3982: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3983: }
3984: }
3985: my $thesestr='';
3986: foreach my $priv (keys(%thesepriv)) {
3987: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3988: }
3989: $userroles->{'user.priv.'.$role} = $thesestr;
3990: }
3991: return ($author,$adv);
3992: }
3993:
3994: sub role_status {
3995: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
3996: my @pwhere = ();
3997: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
3998: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
3999: unless (!defined($$role) || $$role eq '') {
4000: $$where=join('.',@pwhere);
4001: $$trolecode=$$role.'.'.$$where;
4002: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4003: $$tstatus='is';
4004: if ($$tstart && $$tstart>$then) {
4005: $$tstatus='future';
4006: if ($$tstart && $$tstart>$refresh) {
4007: if ($$tstart<$now) {
4008: if (($$where ne '') && ($$role ne '')) {
4009: my (%allroles,%allgroups,$group_privs);
4010: my %userroles = (
4011: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4012: );
4013: my $spec=$$role.'.'.$$where;
4014: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4015: if ($$role eq 'gr') {
4016: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4017: $env{'user.name'})=@_;
4018: my ($trole) = split('_',$role,1);
4019: (undef,my $group_privs) = split(/\//,$trole);
4020: $group_privs = &unescape($group_privs);
4021: }
4022: if ($$role =~ /^cr\//) {
4023: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4024: } elsif ($$role eq 'gr') {
4025: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4026: $env{'user.name'});
4027: my $trole = split('_',$rolehash{$$where.'_'.$$role},1);
4028: (undef,my $group_privs) = split(/\//,$trole);
4029: $group_privs = &unescape($group_privs);
4030: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4031: } else {
4032: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4033: }
4034: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups);
4035: &appenv(\%userroles,[$$role,'cm']);
4036: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4037: $$tstatus = 'is';
4038: }
4039: }
4040: }
4041: }
4042: if ($$tend) {
4043: if ($$tend<$then) {
4044: $$tstatus='expired';
4045: } elsif ($$tend<$now) {
4046: $$tstatus='will_not';
4047: }
4048: }
4049: }
4050: }
4051: }
4052:
4053: sub check_adhoc_privs {
4054: my ($cdom,$cnum,$then,$refresh,$now,$checkrole) = @_;
4055: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4056: if ($env{$cckey}) {
4057: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4058: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4059: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4060: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4061: }
4062: } else {
4063: &set_adhoc_privileges($cdom,$cnum,$checkrole);
4064: }
4065: }
4066:
4067: sub set_adhoc_privileges {
4068: # role can be cc or ca
4069: my ($dcdom,$pickedcourse,$role) = @_;
4070: my $area = '/'.$dcdom.'/'.$pickedcourse;
4071: my $spec = $role.'.'.$area;
4072: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4073: $env{'user.name'});
4074: my %ccrole = ();
4075: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4076: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4077: &appenv(\%userroles,[$role,'cm']);
4078: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4079: &appenv( {'request.role' => $spec,
4080: 'request.role.domain' => $dcdom,
4081: 'request.course.sec' => ''
4082: }
4083: );
4084: my $tadv=0;
4085: if (&allowed('adv') eq 'F') { $tadv=1; }
4086: &appenv({'request.role.adv' => $tadv});
4087: }
4088:
4089: # --------------------------------------------------------------- get interface
4090:
4091: sub get {
4092: my ($namespace,$storearr,$udomain,$uname)=@_;
4093: my $items='';
4094: foreach my $item (@$storearr) {
4095: $items.=&escape($item).'&';
4096: }
4097: $items=~s/\&$//;
4098: if (!$udomain) { $udomain=$env{'user.domain'}; }
4099: if (!$uname) { $uname=$env{'user.name'}; }
4100: my $uhome=&homeserver($uname,$udomain);
4101:
4102: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4103: my @pairs=split(/\&/,$rep);
4104: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4105: return @pairs;
4106: }
4107: my %returnhash=();
4108: my $i=0;
4109: foreach my $item (@$storearr) {
4110: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4111: $i++;
4112: }
4113: return %returnhash;
4114: }
4115:
4116: # --------------------------------------------------------------- del interface
4117:
4118: sub del {
4119: my ($namespace,$storearr,$udomain,$uname)=@_;
4120: my $items='';
4121: foreach my $item (@$storearr) {
4122: $items.=&escape($item).'&';
4123: }
4124:
4125: $items=~s/\&$//;
4126: if (!$udomain) { $udomain=$env{'user.domain'}; }
4127: if (!$uname) { $uname=$env{'user.name'}; }
4128: my $uhome=&homeserver($uname,$udomain);
4129: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4130: }
4131:
4132: # -------------------------------------------------------------- dump interface
4133:
4134: sub dump {
4135: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4136: if (!$udomain) { $udomain=$env{'user.domain'}; }
4137: if (!$uname) { $uname=$env{'user.name'}; }
4138: my $uhome=&homeserver($uname,$udomain);
4139: if ($regexp) {
4140: $regexp=&escape($regexp);
4141: } else {
4142: $regexp='.';
4143: }
4144: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4145: my @pairs=split(/\&/,$rep);
4146: my %returnhash=();
4147: foreach my $item (@pairs) {
4148: my ($key,$value)=split(/=/,$item,2);
4149: $key = &unescape($key);
4150: next if ($key =~ /^error: 2 /);
4151: $returnhash{$key}=&thaw_unescape($value);
4152: }
4153: return %returnhash;
4154: }
4155:
4156: # --------------------------------------------------------- dumpstore interface
4157:
4158: sub dumpstore {
4159: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4160: if (!$udomain) { $udomain=$env{'user.domain'}; }
4161: if (!$uname) { $uname=$env{'user.name'}; }
4162: my $uhome=&homeserver($uname,$udomain);
4163: if ($regexp) {
4164: $regexp=&escape($regexp);
4165: } else {
4166: $regexp='.';
4167: }
4168: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4169: my @pairs=split(/\&/,$rep);
4170: my %returnhash=();
4171: foreach my $item (@pairs) {
4172: my ($key,$value)=split(/=/,$item,2);
4173: next if ($key =~ /^error: 2 /);
4174: $returnhash{$key}=&thaw_unescape($value);
4175: }
4176: return %returnhash;
4177: }
4178:
4179: # -------------------------------------------------------------- keys interface
4180:
4181: sub getkeys {
4182: my ($namespace,$udomain,$uname)=@_;
4183: if (!$udomain) { $udomain=$env{'user.domain'}; }
4184: if (!$uname) { $uname=$env{'user.name'}; }
4185: my $uhome=&homeserver($uname,$udomain);
4186: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4187: my @keyarray=();
4188: foreach my $key (split(/\&/,$rep)) {
4189: next if ($key =~ /^error: 2 /);
4190: push(@keyarray,&unescape($key));
4191: }
4192: return @keyarray;
4193: }
4194:
4195: # --------------------------------------------------------------- currentdump
4196: sub currentdump {
4197: my ($courseid,$sdom,$sname)=@_;
4198: $courseid = $env{'request.course.id'} if (! defined($courseid));
4199: $sdom = $env{'user.domain'} if (! defined($sdom));
4200: $sname = $env{'user.name'} if (! defined($sname));
4201: my $uhome = &homeserver($sname,$sdom);
4202: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4203: return if ($rep =~ /^(error:|no_such_host)/);
4204: #
4205: my %returnhash=();
4206: #
4207: if ($rep eq "unknown_cmd") {
4208: # an old lond will not know currentdump
4209: # Do a dump and make it look like a currentdump
4210: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4211: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4212: my %hash = @tmp;
4213: @tmp=();
4214: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4215: } else {
4216: my @pairs=split(/\&/,$rep);
4217: foreach my $pair (@pairs) {
4218: my ($key,$value)=split(/=/,$pair,2);
4219: my ($symb,$param) = split(/:/,$key);
4220: $returnhash{&unescape($symb)}->{&unescape($param)} =
4221: &thaw_unescape($value);
4222: }
4223: }
4224: return %returnhash;
4225: }
4226:
4227: sub convert_dump_to_currentdump{
4228: my %hash = %{shift()};
4229: my %returnhash;
4230: # Code ripped from lond, essentially. The only difference
4231: # here is the unescaping done by lonnet::dump(). Conceivably
4232: # we might run in to problems with parameter names =~ /^v\./
4233: while (my ($key,$value) = each(%hash)) {
4234: my ($v,$symb,$param) = split(/:/,$key);
4235: $symb = &unescape($symb);
4236: $param = &unescape($param);
4237: next if ($v eq 'version' || $symb eq 'keys');
4238: next if (exists($returnhash{$symb}) &&
4239: exists($returnhash{$symb}->{$param}) &&
4240: $returnhash{$symb}->{'v.'.$param} > $v);
4241: $returnhash{$symb}->{$param}=$value;
4242: $returnhash{$symb}->{'v.'.$param}=$v;
4243: }
4244: #
4245: # Remove all of the keys in the hashes which keep track of
4246: # the version of the parameter.
4247: while (my ($symb,$param_hash) = each(%returnhash)) {
4248: # use a foreach because we are going to delete from the hash.
4249: foreach my $key (keys(%$param_hash)) {
4250: delete($param_hash->{$key}) if ($key =~ /^v\./);
4251: }
4252: }
4253: return \%returnhash;
4254: }
4255:
4256: # ------------------------------------------------------ critical inc interface
4257:
4258: sub cinc {
4259: return &inc(@_,'critical');
4260: }
4261:
4262: # --------------------------------------------------------------- inc interface
4263:
4264: sub inc {
4265: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4266: if (!$udomain) { $udomain=$env{'user.domain'}; }
4267: if (!$uname) { $uname=$env{'user.name'}; }
4268: my $uhome=&homeserver($uname,$udomain);
4269: my $items='';
4270: if (! ref($store)) {
4271: # got a single value, so use that instead
4272: $items = &escape($store).'=&';
4273: } elsif (ref($store) eq 'SCALAR') {
4274: $items = &escape($$store).'=&';
4275: } elsif (ref($store) eq 'ARRAY') {
4276: $items = join('=&',map {&escape($_);} @{$store});
4277: } elsif (ref($store) eq 'HASH') {
4278: while (my($key,$value) = each(%{$store})) {
4279: $items.= &escape($key).'='.&escape($value).'&';
4280: }
4281: }
4282: $items=~s/\&$//;
4283: if ($critical) {
4284: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4285: } else {
4286: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4287: }
4288: }
4289:
4290: # --------------------------------------------------------------- put interface
4291:
4292: sub put {
4293: my ($namespace,$storehash,$udomain,$uname)=@_;
4294: if (!$udomain) { $udomain=$env{'user.domain'}; }
4295: if (!$uname) { $uname=$env{'user.name'}; }
4296: my $uhome=&homeserver($uname,$udomain);
4297: my $items='';
4298: foreach my $item (keys(%$storehash)) {
4299: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4300: }
4301: $items=~s/\&$//;
4302: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4303: }
4304:
4305: # ------------------------------------------------------------ newput interface
4306:
4307: sub newput {
4308: my ($namespace,$storehash,$udomain,$uname)=@_;
4309: if (!$udomain) { $udomain=$env{'user.domain'}; }
4310: if (!$uname) { $uname=$env{'user.name'}; }
4311: my $uhome=&homeserver($uname,$udomain);
4312: my $items='';
4313: foreach my $key (keys(%$storehash)) {
4314: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4315: }
4316: $items=~s/\&$//;
4317: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4318: }
4319:
4320: # --------------------------------------------------------- putstore interface
4321:
4322: sub putstore {
4323: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4324: if (!$udomain) { $udomain=$env{'user.domain'}; }
4325: if (!$uname) { $uname=$env{'user.name'}; }
4326: my $uhome=&homeserver($uname,$udomain);
4327: my $items='';
4328: foreach my $key (keys(%$storehash)) {
4329: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4330: }
4331: $items=~s/\&$//;
4332: my $esc_symb=&escape($symb);
4333: my $esc_v=&escape($version);
4334: my $reply =
4335: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4336: $uhome);
4337: if ($reply eq 'unknown_cmd') {
4338: # gfall back to way things use to be done
4339: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4340: $uname);
4341: }
4342: return $reply;
4343: }
4344:
4345: sub old_putstore {
4346: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4347: if (!$udomain) { $udomain=$env{'user.domain'}; }
4348: if (!$uname) { $uname=$env{'user.name'}; }
4349: my $uhome=&homeserver($uname,$udomain);
4350: my %newstorehash;
4351: foreach my $item (keys(%$storehash)) {
4352: my $key = $version.':'.&escape($symb).':'.$item;
4353: $newstorehash{$key} = $storehash->{$item};
4354: }
4355: my $items='';
4356: my %allitems = ();
4357: foreach my $item (keys(%newstorehash)) {
4358: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4359: my $key = $1.':keys:'.$2;
4360: $allitems{$key} .= $3.':';
4361: }
4362: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4363: }
4364: foreach my $item (keys(%allitems)) {
4365: $allitems{$item} =~ s/\:$//;
4366: $items.= $item.'='.$allitems{$item}.'&';
4367: }
4368: $items=~s/\&$//;
4369: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4370: }
4371:
4372: # ------------------------------------------------------ critical put interface
4373:
4374: sub cput {
4375: my ($namespace,$storehash,$udomain,$uname)=@_;
4376: if (!$udomain) { $udomain=$env{'user.domain'}; }
4377: if (!$uname) { $uname=$env{'user.name'}; }
4378: my $uhome=&homeserver($uname,$udomain);
4379: my $items='';
4380: foreach my $item (keys(%$storehash)) {
4381: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4382: }
4383: $items=~s/\&$//;
4384: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4385: }
4386:
4387: # -------------------------------------------------------------- eget interface
4388:
4389: sub eget {
4390: my ($namespace,$storearr,$udomain,$uname)=@_;
4391: my $items='';
4392: foreach my $item (@$storearr) {
4393: $items.=&escape($item).'&';
4394: }
4395: $items=~s/\&$//;
4396: if (!$udomain) { $udomain=$env{'user.domain'}; }
4397: if (!$uname) { $uname=$env{'user.name'}; }
4398: my $uhome=&homeserver($uname,$udomain);
4399: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4400: my @pairs=split(/\&/,$rep);
4401: my %returnhash=();
4402: my $i=0;
4403: foreach my $item (@$storearr) {
4404: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4405: $i++;
4406: }
4407: return %returnhash;
4408: }
4409:
4410: # ------------------------------------------------------------ tmpput interface
4411: sub tmpput {
4412: my ($storehash,$server,$context)=@_;
4413: my $items='';
4414: foreach my $item (keys(%$storehash)) {
4415: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4416: }
4417: $items=~s/\&$//;
4418: if (defined($context)) {
4419: $items .= ':'.&escape($context);
4420: }
4421: return &reply("tmpput:$items",$server);
4422: }
4423:
4424: # ------------------------------------------------------------ tmpget interface
4425: sub tmpget {
4426: my ($token,$server)=@_;
4427: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4428: my $rep=&reply("tmpget:$token",$server);
4429: my %returnhash;
4430: foreach my $item (split(/\&/,$rep)) {
4431: my ($key,$value)=split(/=/,$item);
4432: next if ($key =~ /^error: 2 /);
4433: $returnhash{&unescape($key)}=&thaw_unescape($value);
4434: }
4435: return %returnhash;
4436: }
4437:
4438: # ------------------------------------------------------------ tmpget interface
4439: sub tmpdel {
4440: my ($token,$server)=@_;
4441: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4442: return &reply("tmpdel:$token",$server);
4443: }
4444:
4445: # -------------------------------------------------- portfolio access checking
4446:
4447: sub portfolio_access {
4448: my ($requrl) = @_;
4449: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4450: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4451: if ($result) {
4452: my %setters;
4453: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4454: my ($startblock,$endblock) =
4455: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4456: if ($startblock && $endblock) {
4457: return 'B';
4458: }
4459: } else {
4460: my ($startblock,$endblock) =
4461: &Apache::loncommon::blockcheck(\%setters,'port');
4462: if ($startblock && $endblock) {
4463: return 'B';
4464: }
4465: }
4466: }
4467: if ($result eq 'ok') {
4468: return 'F';
4469: } elsif ($result =~ /^[^:]+:guest_/) {
4470: return 'A';
4471: }
4472: return '';
4473: }
4474:
4475: sub get_portfolio_access {
4476: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4477:
4478: if (!ref($access_hash)) {
4479: my $current_perms = &get_portfile_permissions($udom,$unum);
4480: my %access_controls = &get_access_controls($current_perms,$group,
4481: $file_name);
4482: $access_hash = $access_controls{$file_name};
4483: }
4484:
4485: my ($public,$guest,@domains,@users,@courses,@groups);
4486: my $now = time;
4487: if (ref($access_hash) eq 'HASH') {
4488: foreach my $key (keys(%{$access_hash})) {
4489: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4490: if ($start > $now) {
4491: next;
4492: }
4493: if ($end && $end<$now) {
4494: next;
4495: }
4496: if ($scope eq 'public') {
4497: $public = $key;
4498: last;
4499: } elsif ($scope eq 'guest') {
4500: $guest = $key;
4501: } elsif ($scope eq 'domains') {
4502: push(@domains,$key);
4503: } elsif ($scope eq 'users') {
4504: push(@users,$key);
4505: } elsif ($scope eq 'course') {
4506: push(@courses,$key);
4507: } elsif ($scope eq 'group') {
4508: push(@groups,$key);
4509: }
4510: }
4511: if ($public) {
4512: return 'ok';
4513: }
4514: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4515: if ($guest) {
4516: return $guest;
4517: }
4518: } else {
4519: if (@domains > 0) {
4520: foreach my $domkey (@domains) {
4521: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4522: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4523: return 'ok';
4524: }
4525: }
4526: }
4527: }
4528: if (@users > 0) {
4529: foreach my $userkey (@users) {
4530: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4531: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4532: if (ref($item) eq 'HASH') {
4533: if (($item->{'uname'} eq $env{'user.name'}) &&
4534: ($item->{'udom'} eq $env{'user.domain'})) {
4535: return 'ok';
4536: }
4537: }
4538: }
4539: }
4540: }
4541: }
4542: my %roleshash;
4543: my @courses_and_groups = @courses;
4544: push(@courses_and_groups,@groups);
4545: if (@courses_and_groups > 0) {
4546: my (%allgroups,%allroles);
4547: my ($start,$end,$role,$sec,$group);
4548: foreach my $envkey (%env) {
4549: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4550: my $cid = $2.'_'.$3;
4551: if ($1 eq 'gr') {
4552: $group = $4;
4553: $allgroups{$cid}{$group} = $env{$envkey};
4554: } else {
4555: if ($4 eq '') {
4556: $sec = 'none';
4557: } else {
4558: $sec = $4;
4559: }
4560: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4561: }
4562: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4563: my $cid = $2.'_'.$3;
4564: if ($4 eq '') {
4565: $sec = 'none';
4566: } else {
4567: $sec = $4;
4568: }
4569: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4570: }
4571: }
4572: if (keys(%allroles) == 0) {
4573: return;
4574: }
4575: foreach my $key (@courses_and_groups) {
4576: my %content = %{$$access_hash{$key}};
4577: my $cnum = $content{'number'};
4578: my $cdom = $content{'domain'};
4579: my $cid = $cdom.'_'.$cnum;
4580: if (!exists($allroles{$cid})) {
4581: next;
4582: }
4583: foreach my $role_id (keys(%{$content{'roles'}})) {
4584: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4585: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4586: my @status = @{$content{'roles'}{$role_id}{'access'}};
4587: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4588: foreach my $role (keys(%{$allroles{$cid}})) {
4589: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4590: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4591: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4592: if (grep/^all$/,@sections) {
4593: return 'ok';
4594: } else {
4595: if (grep/^$sec$/,@sections) {
4596: return 'ok';
4597: }
4598: }
4599: }
4600: }
4601: if (keys(%{$allgroups{$cid}}) == 0) {
4602: if (grep/^none$/,@groups) {
4603: return 'ok';
4604: }
4605: } else {
4606: if (grep/^all$/,@groups) {
4607: return 'ok';
4608: }
4609: foreach my $group (keys(%{$allgroups{$cid}})) {
4610: if (grep/^$group$/,@groups) {
4611: return 'ok';
4612: }
4613: }
4614: }
4615: }
4616: }
4617: }
4618: }
4619: }
4620: if ($guest) {
4621: return $guest;
4622: }
4623: }
4624: }
4625: return;
4626: }
4627:
4628: sub course_group_datechecker {
4629: my ($dates,$now,$status) = @_;
4630: my ($start,$end) = split(/\./,$dates);
4631: if (!$start && !$end) {
4632: return 'ok';
4633: }
4634: if (grep/^active$/,@{$status}) {
4635: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4636: return 'ok';
4637: }
4638: }
4639: if (grep/^previous$/,@{$status}) {
4640: if ($end > $now ) {
4641: return 'ok';
4642: }
4643: }
4644: if (grep/^future$/,@{$status}) {
4645: if ($start > $now) {
4646: return 'ok';
4647: }
4648: }
4649: return;
4650: }
4651:
4652: sub parse_portfolio_url {
4653: my ($url) = @_;
4654:
4655: my ($type,$udom,$unum,$group,$file_name);
4656:
4657: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4658: $type = 1;
4659: $udom = $1;
4660: $unum = $2;
4661: $file_name = $3;
4662: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4663: $type = 2;
4664: $udom = $1;
4665: $unum = $2;
4666: $group = $3;
4667: $file_name = $3.'/'.$4;
4668: }
4669: if (wantarray) {
4670: return ($type,$udom,$unum,$file_name,$group);
4671: }
4672: return $type;
4673: }
4674:
4675: sub is_portfolio_url {
4676: my ($url) = @_;
4677: return scalar(&parse_portfolio_url($url));
4678: }
4679:
4680: sub is_portfolio_file {
4681: my ($file) = @_;
4682: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4683: return 1;
4684: }
4685: return;
4686: }
4687:
4688: sub usertools_access {
4689: my ($uname,$udom,$tool,$action,$context) = @_;
4690: my ($access,%tools);
4691: if ($context eq '') {
4692: $context = 'tools';
4693: }
4694: if ($context eq 'requestcourses') {
4695: %tools = (
4696: official => 1,
4697: unofficial => 1,
4698: community => 1,
4699: );
4700: } else {
4701: %tools = (
4702: aboutme => 1,
4703: blog => 1,
4704: portfolio => 1,
4705: );
4706: }
4707: return if (!defined($tools{$tool}));
4708:
4709: if ((!defined($udom)) || (!defined($uname))) {
4710: $udom = $env{'user.domain'};
4711: $uname = $env{'user.name'};
4712: }
4713:
4714: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4715: if ($action ne 'reload') {
4716: if ($context eq 'requestcourses') {
4717: return $env{'environment.canrequest.'.$tool};
4718: } else {
4719: return $env{'environment.availabletools.'.$tool};
4720: }
4721: }
4722: }
4723:
4724: my ($toolstatus,$inststatus);
4725:
4726: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
4727: ($action ne 'reload')) {
4728: $toolstatus = $env{'environment.'.$context.'.'.$tool};
4729: $inststatus = $env{'environment.inststatus'};
4730: } else {
4731: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
4732: $toolstatus = $userenv{$context.'.'.$tool};
4733: $inststatus = $userenv{'inststatus'};
4734: }
4735:
4736: if ($toolstatus ne '') {
4737: if ($toolstatus) {
4738: $access = 1;
4739: } else {
4740: $access = 0;
4741: }
4742: return $access;
4743: }
4744:
4745: my $is_adv = &is_advanced_user($udom,$uname);
4746: my %domdef = &get_domain_defaults($udom);
4747: if (ref($domdef{$tool}) eq 'HASH') {
4748: if ($is_adv) {
4749: if ($domdef{$tool}{'_LC_adv'} ne '') {
4750: if ($domdef{$tool}{'_LC_adv'}) {
4751: $access = 1;
4752: } else {
4753: $access = 0;
4754: }
4755: return $access;
4756: }
4757: }
4758: if ($inststatus ne '') {
4759: my ($hasaccess,$hasnoaccess);
4760: foreach my $affiliation (split(/:/,$inststatus)) {
4761: if ($domdef{$tool}{$affiliation} ne '') {
4762: if ($domdef{$tool}{$affiliation}) {
4763: $hasaccess = 1;
4764: } else {
4765: $hasnoaccess = 1;
4766: }
4767: }
4768: }
4769: if ($hasaccess || $hasnoaccess) {
4770: if ($hasaccess) {
4771: $access = 1;
4772: } elsif ($hasnoaccess) {
4773: $access = 0;
4774: }
4775: return $access;
4776: }
4777: } else {
4778: if ($domdef{$tool}{'default'} ne '') {
4779: if ($domdef{$tool}{'default'}) {
4780: $access = 1;
4781: } elsif ($domdef{$tool}{'default'} == 0) {
4782: $access = 0;
4783: }
4784: return $access;
4785: }
4786: }
4787: } else {
4788: if ($context eq 'tools') {
4789: $access = 1;
4790: } else {
4791: $access = 0;
4792: }
4793: return $access;
4794: }
4795: }
4796:
4797: sub is_advanced_user {
4798: my ($udom,$uname) = @_;
4799: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
4800: my %allroles;
4801: my $is_adv;
4802: foreach my $role (keys(%roleshash)) {
4803: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
4804: my $area = '/'.$tdomain.'/'.$trest;
4805: if ($sec ne '') {
4806: $area .= '/'.$sec;
4807: }
4808: if (($area ne '') && ($trole ne '')) {
4809: my $spec=$trole.'.'.$area;
4810: if ($trole =~ /^cr\//) {
4811: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4812: } elsif ($trole ne 'gr') {
4813: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4814: }
4815: }
4816: }
4817: foreach my $role (keys(%allroles)) {
4818: last if ($is_adv);
4819: foreach my $item (split(/:/,$allroles{$role})) {
4820: if ($item ne '') {
4821: my ($privilege,$restrictions)=split(/&/,$item);
4822: if ($privilege eq 'adv') {
4823: $is_adv = 1;
4824: last;
4825: }
4826: }
4827: }
4828: }
4829: return $is_adv;
4830: }
4831:
4832: # ---------------------------------------------- Custom access rule evaluation
4833:
4834: sub customaccess {
4835: my ($priv,$uri)=@_;
4836: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4837: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4838: $udom = &LONCAPA::clean_domain($udom);
4839: $ucrs = &LONCAPA::clean_username($ucrs);
4840: my $access=0;
4841: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4842: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4843: if ($type eq 'user') {
4844: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4845: my ($tdom,$tuname)=split(m{/},$scope);
4846: if ($tdom) {
4847: if ($tdom ne $env{'user.domain'}) { next; }
4848: }
4849: if ($tuname) {
4850: if ($tuname ne $env{'user.name'}) { next; }
4851: }
4852: $access=($effect eq 'allow');
4853: last;
4854: }
4855: } else {
4856: if ($role) {
4857: if ($role ne $urole) { next; }
4858: }
4859: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4860: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4861: if ($tdom) {
4862: if ($tdom ne $udom) { next; }
4863: }
4864: if ($tcrs) {
4865: if ($tcrs ne $ucrs) { next; }
4866: }
4867: if ($tsec) {
4868: if ($tsec ne $usec) { next; }
4869: }
4870: $access=($effect eq 'allow');
4871: last;
4872: }
4873: if ($realm eq '' && $role eq '') {
4874: $access=($effect eq 'allow');
4875: }
4876: }
4877: }
4878: return $access;
4879: }
4880:
4881: # ------------------------------------------------- Check for a user privilege
4882:
4883: sub allowed {
4884: my ($priv,$uri,$symb,$role)=@_;
4885: my $ver_orguri=$uri;
4886: $uri=&deversion($uri);
4887: my $orguri=$uri;
4888: $uri=&declutter($uri);
4889:
4890: if ($priv eq 'evb') {
4891: # Evade communication block restrictions for specified role in a course
4892: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4893: return $1;
4894: } else {
4895: return;
4896: }
4897: }
4898:
4899: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4900: # Free bre access to adm and meta resources
4901: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4902: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4903: && ($priv eq 'bre')) {
4904: return 'F';
4905: }
4906:
4907: # Free bre access to user's own portfolio contents
4908: my ($space,$domain,$name,@dir)=split('/',$uri);
4909: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4910: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4911: my %setters;
4912: my ($startblock,$endblock) =
4913: &Apache::loncommon::blockcheck(\%setters,'port');
4914: if ($startblock && $endblock) {
4915: return 'B';
4916: } else {
4917: return 'F';
4918: }
4919: }
4920:
4921: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4922: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4923: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4924: if (exists($env{'request.course.id'})) {
4925: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4926: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4927: if (($domain eq $cdom) && ($name eq $cnum)) {
4928: my $courseprivid=$env{'request.course.id'};
4929: $courseprivid=~s/\_/\//;
4930: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4931: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4932: return $1;
4933: } else {
4934: if ($env{'request.course.sec'}) {
4935: $courseprivid.='/'.$env{'request.course.sec'};
4936: }
4937: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4938: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4939: return $2;
4940: }
4941: }
4942: }
4943: }
4944: }
4945:
4946: # Free bre to public access
4947:
4948: if ($priv eq 'bre') {
4949: my $copyright=&metadata($uri,'copyright');
4950: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4951: return 'F';
4952: }
4953: if ($copyright eq 'priv') {
4954: $uri=~/([^\/]+)\/([^\/]+)\//;
4955: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4956: return '';
4957: }
4958: }
4959: if ($copyright eq 'domain') {
4960: $uri=~/([^\/]+)\/([^\/]+)\//;
4961: unless (($env{'user.domain'} eq $1) ||
4962: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4963: return '';
4964: }
4965: }
4966: if ($env{'request.role'}=~ /li\.\//) {
4967: # Library role, so allow browsing of resources in this domain.
4968: return 'F';
4969: }
4970: if ($copyright eq 'custom') {
4971: unless (&customaccess($priv,$uri)) { return ''; }
4972: }
4973: }
4974: # Domain coordinator is trying to create a course
4975: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4976: # uri is the requested domain in this case.
4977: # comparison to 'request.role.domain' shows if the user has selected
4978: # a role of dc for the domain in question.
4979: return 'F' if ($uri eq $env{'request.role.domain'});
4980: }
4981:
4982: my $thisallowed='';
4983: my $statecond=0;
4984: my $courseprivid='';
4985:
4986: # Course
4987:
4988: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4989: $thisallowed.=$1;
4990: }
4991:
4992: # Domain
4993:
4994: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4995: =~/\Q$priv\E\&([^\:]*)/) {
4996: $thisallowed.=$1;
4997: }
4998:
4999: # Course: uri itself is a course
5000: my $courseuri=$uri;
5001: $courseuri=~s/\_(\d)/\/$1/;
5002: $courseuri=~s/^([^\/])/\/$1/;
5003:
5004: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5005: =~/\Q$priv\E\&([^\:]*)/) {
5006: $thisallowed.=$1;
5007: }
5008:
5009: # URI is an uploaded document for this course, default permissions don't matter
5010: # not allowing 'edit' access (editupload) to uploaded course docs
5011: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5012: $thisallowed='';
5013: my ($match)=&is_on_map($uri);
5014: if ($match) {
5015: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5016: =~/\Q$priv\E\&([^\:]*)/) {
5017: $thisallowed.=$1;
5018: }
5019: } else {
5020: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5021: if ($refuri) {
5022: if ($refuri =~ m|^/adm/|) {
5023: $thisallowed='F';
5024: } else {
5025: $refuri=&declutter($refuri);
5026: my ($match) = &is_on_map($refuri);
5027: if ($match) {
5028: $thisallowed='F';
5029: }
5030: }
5031: }
5032: }
5033: }
5034:
5035: if ($priv eq 'bre'
5036: && $thisallowed ne 'F'
5037: && $thisallowed ne '2'
5038: && &is_portfolio_url($uri)) {
5039: $thisallowed = &portfolio_access($uri);
5040: }
5041:
5042: # Full access at system, domain or course-wide level? Exit.
5043: if ($thisallowed=~/F/) {
5044: return 'F';
5045: }
5046:
5047: # If this is generating or modifying users, exit with special codes
5048:
5049: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5050: if (($priv eq 'cca') || ($priv eq 'caa')) {
5051: my ($audom,$auname)=split('/',$uri);
5052: # no author name given, so this just checks on the general right to make a co-author in this domain
5053: unless ($auname) { return $thisallowed; }
5054: # an author name is given, so we are about to actually make a co-author for a certain account
5055: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5056: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5057: ($audom ne $env{'request.role.domain'}))) { return ''; }
5058: }
5059: return $thisallowed;
5060: }
5061: #
5062: # Gathered so far: system, domain and course wide privileges
5063: #
5064: # Course: See if uri or referer is an individual resource that is part of
5065: # the course
5066:
5067: if ($env{'request.course.id'}) {
5068:
5069: $courseprivid=$env{'request.course.id'};
5070: if ($env{'request.course.sec'}) {
5071: $courseprivid.='/'.$env{'request.course.sec'};
5072: }
5073: $courseprivid=~s/\_/\//;
5074: my $checkreferer=1;
5075: my ($match,$cond)=&is_on_map($uri);
5076: if ($match) {
5077: $statecond=$cond;
5078: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5079: =~/\Q$priv\E\&([^\:]*)/) {
5080: $thisallowed.=$1;
5081: $checkreferer=0;
5082: }
5083: }
5084:
5085: if ($checkreferer) {
5086: my $refuri=$env{'httpref.'.$orguri};
5087: unless ($refuri) {
5088: foreach my $key (keys(%env)) {
5089: if ($key=~/^httpref\..*\*/) {
5090: my $pattern=$key;
5091: $pattern=~s/^httpref\.\/res\///;
5092: $pattern=~s/\*/\[\^\/\]\+/g;
5093: $pattern=~s/\//\\\//g;
5094: if ($orguri=~/$pattern/) {
5095: $refuri=$env{$key};
5096: }
5097: }
5098: }
5099: }
5100:
5101: if ($refuri) {
5102: $refuri=&declutter($refuri);
5103: my ($match,$cond)=&is_on_map($refuri);
5104: if ($match) {
5105: my $refstatecond=$cond;
5106: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5107: =~/\Q$priv\E\&([^\:]*)/) {
5108: $thisallowed.=$1;
5109: $uri=$refuri;
5110: $statecond=$refstatecond;
5111: }
5112: }
5113: }
5114: }
5115: }
5116:
5117: #
5118: # Gathered now: all privileges that could apply, and condition number
5119: #
5120: #
5121: # Full or no access?
5122: #
5123:
5124: if ($thisallowed=~/F/) {
5125: return 'F';
5126: }
5127:
5128: unless ($thisallowed) {
5129: return '';
5130: }
5131:
5132: # Restrictions exist, deal with them
5133: #
5134: # C:according to course preferences
5135: # R:according to resource settings
5136: # L:unless locked
5137: # X:according to user session state
5138: #
5139:
5140: # Possibly locked functionality, check all courses
5141: # Locks might take effect only after 10 minutes cache expiration for other
5142: # courses, and 2 minutes for current course
5143:
5144: my $envkey;
5145: if ($thisallowed=~/L/) {
5146: foreach $envkey (keys(%env)) {
5147: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5148: my $courseid=$2;
5149: my $roleid=$1.'.'.$2;
5150: $courseid=~s/^\///;
5151: my $expiretime=600;
5152: if ($env{'request.role'} eq $roleid) {
5153: $expiretime=120;
5154: }
5155: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5156: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5157: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5158: &coursedescription($courseid,{'freshen_cache' => 1});
5159: }
5160: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5161: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5162: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5163: &log($env{'user.domain'},$env{'user.name'},
5164: $env{'user.home'},
5165: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5166: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5167: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5168: return '';
5169: }
5170: }
5171: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5172: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5173: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5174: &log($env{'user.domain'},$env{'user.name'},
5175: $env{'user.home'},
5176: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5177: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5178: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5179: return '';
5180: }
5181: }
5182: }
5183: }
5184: }
5185:
5186: #
5187: # Rest of the restrictions depend on selected course
5188: #
5189:
5190: unless ($env{'request.course.id'}) {
5191: if ($thisallowed eq 'A') {
5192: return 'A';
5193: } elsif ($thisallowed eq 'B') {
5194: return 'B';
5195: } else {
5196: return '1';
5197: }
5198: }
5199:
5200: #
5201: # Now user is definitely in a course
5202: #
5203:
5204:
5205: # Course preferences
5206:
5207: if ($thisallowed=~/C/) {
5208: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5209: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5210: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5211: =~/\Q$rolecode\E/) {
5212: if ($priv ne 'pch') {
5213: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5214: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5215: $env{'request.course.id'});
5216: }
5217: return '';
5218: }
5219:
5220: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5221: =~/\Q$unamedom\E/) {
5222: if ($priv ne 'pch') {
5223: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5224: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5225: $env{'request.course.id'});
5226: }
5227: return '';
5228: }
5229: }
5230:
5231: # Resource preferences
5232:
5233: if ($thisallowed=~/R/) {
5234: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5235: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5236: if ($priv ne 'pch') {
5237: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5238: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5239: }
5240: return '';
5241: }
5242: }
5243:
5244: # Restricted by state or randomout?
5245:
5246: if ($thisallowed=~/X/) {
5247: if ($env{'acc.randomout'}) {
5248: if (!$symb) { $symb=&symbread($uri,1); }
5249: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5250: return '';
5251: }
5252: }
5253: if (&condval($statecond)) {
5254: return '2';
5255: } else {
5256: return '';
5257: }
5258: }
5259:
5260: if ($thisallowed eq 'A') {
5261: return 'A';
5262: } elsif ($thisallowed eq 'B') {
5263: return 'B';
5264: }
5265: return 'F';
5266: }
5267:
5268: sub split_uri_for_cond {
5269: my $uri=&deversion(&declutter(shift));
5270: my @uriparts=split(/\//,$uri);
5271: my $filename=pop(@uriparts);
5272: my $pathname=join('/',@uriparts);
5273: return ($pathname,$filename);
5274: }
5275: # --------------------------------------------------- Is a resource on the map?
5276:
5277: sub is_on_map {
5278: my ($pathname,$filename) = &split_uri_for_cond(shift);
5279: #Trying to find the conditional for the file
5280: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5281: /\&\Q$filename\E\:([\d\|]+)\&/);
5282: if ($match) {
5283: return (1,$1);
5284: } else {
5285: return (0,0);
5286: }
5287: }
5288:
5289: # --------------------------------------------------------- Get symb from alias
5290:
5291: sub get_symb_from_alias {
5292: my $symb=shift;
5293: my ($map,$resid,$url)=&decode_symb($symb);
5294: # Already is a symb
5295: if ($url) { return $symb; }
5296: # Must be an alias
5297: my $aliassymb='';
5298: my %bighash;
5299: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5300: &GDBM_READER(),0640)) {
5301: my $rid=$bighash{'mapalias_'.$symb};
5302: if ($rid) {
5303: my ($mapid,$resid)=split(/\./,$rid);
5304: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5305: $resid,$bighash{'src_'.$rid});
5306: }
5307: untie %bighash;
5308: }
5309: return $aliassymb;
5310: }
5311:
5312: # ----------------------------------------------------------------- Define Role
5313:
5314: sub definerole {
5315: if (allowed('mcr','/')) {
5316: my ($rolename,$sysrole,$domrole,$courole)=@_;
5317: foreach my $role (split(':',$sysrole)) {
5318: my ($crole,$cqual)=split(/\&/,$role);
5319: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5320: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5321: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5322: return "refused:s:$crole&$cqual";
5323: }
5324: }
5325: }
5326: foreach my $role (split(':',$domrole)) {
5327: my ($crole,$cqual)=split(/\&/,$role);
5328: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5329: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5330: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5331: return "refused:d:$crole&$cqual";
5332: }
5333: }
5334: }
5335: foreach my $role (split(':',$courole)) {
5336: my ($crole,$cqual)=split(/\&/,$role);
5337: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5338: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5339: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5340: return "refused:c:$crole&$cqual";
5341: }
5342: }
5343: }
5344: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5345: "$env{'user.domain'}:$env{'user.name'}:".
5346: "rolesdef_$rolename=".
5347: escape($sysrole.'_'.$domrole.'_'.$courole);
5348: return reply($command,$env{'user.home'});
5349: } else {
5350: return 'refused';
5351: }
5352: }
5353:
5354: # ---------------- Make a metadata query against the network of library servers
5355:
5356: sub metadata_query {
5357: my ($query,$custom,$customshow,$server_array)=@_;
5358: my %rhash;
5359: my %libserv = &all_library();
5360: my @server_list = (defined($server_array) ? @$server_array
5361: : keys(%libserv) );
5362: for my $server (@server_list) {
5363: unless ($custom or $customshow) {
5364: my $reply=&reply("querysend:".&escape($query),$server);
5365: $rhash{$server}=$reply;
5366: }
5367: else {
5368: my $reply=&reply("querysend:".&escape($query).':'.
5369: &escape($custom).':'.&escape($customshow),
5370: $server);
5371: $rhash{$server}=$reply;
5372: }
5373: }
5374: return \%rhash;
5375: }
5376:
5377: # ----------------------------------------- Send log queries and wait for reply
5378:
5379: sub log_query {
5380: my ($uname,$udom,$query,%filters)=@_;
5381: my $uhome=&homeserver($uname,$udom);
5382: if ($uhome eq 'no_host') { return 'error: no_host'; }
5383: my $uhost=&hostname($uhome);
5384: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5385: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5386: $uhome);
5387: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5388: return get_query_reply($queryid);
5389: }
5390:
5391: # -------------------------- Update MySQL table for portfolio file
5392:
5393: sub update_portfolio_table {
5394: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5395: if ($group ne '') {
5396: $file_name =~s /^\Q$group\E//;
5397: }
5398: my $homeserver = &homeserver($uname,$udom);
5399: my $queryid=
5400: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5401: ':'.&escape($file_name).':'.$action,$homeserver);
5402: my $reply = &get_query_reply($queryid);
5403: return $reply;
5404: }
5405:
5406: # -------------------------- Update MySQL allusers table
5407:
5408: sub update_allusers_table {
5409: my ($uname,$udom,$names) = @_;
5410: my $homeserver = &homeserver($uname,$udom);
5411: my $queryid=
5412: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5413: 'lastname='.&escape($names->{'lastname'}).'%%'.
5414: 'firstname='.&escape($names->{'firstname'}).'%%'.
5415: 'middlename='.&escape($names->{'middlename'}).'%%'.
5416: 'generation='.&escape($names->{'generation'}).'%%'.
5417: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5418: 'id='.&escape($names->{'id'}),$homeserver);
5419: my $reply = &get_query_reply($queryid);
5420: return $reply;
5421: }
5422:
5423: # ------- Request retrieval of institutional classlists for course(s)
5424:
5425: sub fetch_enrollment_query {
5426: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5427: my $homeserver;
5428: my $maxtries = 1;
5429: if ($context eq 'automated') {
5430: $homeserver = $perlvar{'lonHostID'};
5431: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5432: } else {
5433: $homeserver = &homeserver($cnum,$dom);
5434: }
5435: my $host=&hostname($homeserver);
5436: my $cmd = '';
5437: foreach my $affiliate (keys(%{$affiliatesref})) {
5438: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5439: }
5440: $cmd =~ s/%%$//;
5441: $cmd = &escape($cmd);
5442: my $query = 'fetchenrollment';
5443: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5444: unless ($queryid=~/^\Q$host\E\_/) {
5445: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5446: return 'error: '.$queryid;
5447: }
5448: my $reply = &get_query_reply($queryid);
5449: my $tries = 1;
5450: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5451: $reply = &get_query_reply($queryid);
5452: $tries ++;
5453: }
5454: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5455: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5456: } else {
5457: my @responses = split(/:/,$reply);
5458: if ($homeserver eq $perlvar{'lonHostID'}) {
5459: foreach my $line (@responses) {
5460: my ($key,$value) = split(/=/,$line,2);
5461: $$replyref{$key} = $value;
5462: }
5463: } else {
5464: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5465: foreach my $line (@responses) {
5466: my ($key,$value) = split(/=/,$line);
5467: $$replyref{$key} = $value;
5468: if ($value > 0) {
5469: foreach my $item (@{$$affiliatesref{$key}}) {
5470: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5471: my $destname = $pathname.'/'.$filename;
5472: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5473: if ($xml_classlist =~ /^error/) {
5474: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5475: } else {
5476: if ( open(FILE,">$destname") ) {
5477: print FILE &unescape($xml_classlist);
5478: close(FILE);
5479: } else {
5480: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5481: }
5482: }
5483: }
5484: }
5485: }
5486: }
5487: return 'ok';
5488: }
5489: return 'error';
5490: }
5491:
5492: sub get_query_reply {
5493: my $queryid=shift;
5494: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5495: my $reply='';
5496: for (1..100) {
5497: sleep 2;
5498: if (-e $replyfile.'.end') {
5499: if (open(my $fh,$replyfile)) {
5500: $reply = join('',<$fh>);
5501: close($fh);
5502: } else { return 'error: reply_file_error'; }
5503: return &unescape($reply);
5504: }
5505: }
5506: return 'timeout:'.$queryid;
5507: }
5508:
5509: sub courselog_query {
5510: #
5511: # possible filters:
5512: # url: url or symb
5513: # username
5514: # domain
5515: # action: view, submit, grade
5516: # start: timestamp
5517: # end: timestamp
5518: #
5519: my (%filters)=@_;
5520: unless ($env{'request.course.id'}) { return 'no_course'; }
5521: if ($filters{'url'}) {
5522: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5523: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5524: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5525: }
5526: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5527: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5528: return &log_query($cname,$cdom,'courselog',%filters);
5529: }
5530:
5531: sub userlog_query {
5532: #
5533: # possible filters:
5534: # action: log check role
5535: # start: timestamp
5536: # end: timestamp
5537: #
5538: my ($uname,$udom,%filters)=@_;
5539: return &log_query($uname,$udom,'userlog',%filters);
5540: }
5541:
5542: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5543:
5544: sub auto_run {
5545: my ($cnum,$cdom) = @_;
5546: my $response = 0;
5547: my $settings;
5548: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5549: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5550: $settings = $domconfig{'autoenroll'};
5551: if ($settings->{'run'} eq '1') {
5552: $response = 1;
5553: }
5554: } else {
5555: my $homeserver;
5556: if (&is_course($cdom,$cnum)) {
5557: $homeserver = &homeserver($cnum,$cdom);
5558: } else {
5559: $homeserver = &domain($cdom,'primary');
5560: }
5561: if ($homeserver ne 'no_host') {
5562: $response = &reply('autorun:'.$cdom,$homeserver);
5563: }
5564: }
5565: return $response;
5566: }
5567:
5568: sub auto_get_sections {
5569: my ($cnum,$cdom,$inst_coursecode) = @_;
5570: my $homeserver;
5571: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5572: $homeserver = &homeserver($cnum,$cdom);
5573: }
5574: if (!defined($homeserver)) {
5575: if ($cdom =~ /^$match_domain$/) {
5576: $homeserver = &domain($cdom,'primary');
5577: }
5578: }
5579: my @secs;
5580: if (defined($homeserver)) {
5581: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5582: unless ($response eq 'refused') {
5583: @secs = split(/:/,$response);
5584: }
5585: }
5586: return @secs;
5587: }
5588:
5589: sub auto_new_course {
5590: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5591: my $homeserver = &homeserver($cnum,$cdom);
5592: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5593: return $response;
5594: }
5595:
5596: sub auto_validate_courseID {
5597: my ($cnum,$cdom,$inst_course_id) = @_;
5598: my $homeserver = &homeserver($cnum,$cdom);
5599: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5600: return $response;
5601: }
5602:
5603: sub auto_validate_instcode {
5604: my ($cnum,$cdom,$instcode,$owner) = @_;
5605: my ($homeserver,$response);
5606: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5607: $homeserver = &homeserver($cnum,$cdom);
5608: }
5609: if (!defined($homeserver)) {
5610: if ($cdom =~ /^$match_domain$/) {
5611: $homeserver = &domain($cdom,'primary');
5612: }
5613: }
5614: my $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
5615: &escape($instcode).':'.&escape($owner),$homeserver));
5616: return $response;
5617: }
5618:
5619: sub auto_create_password {
5620: my ($cnum,$cdom,$authparam,$udom) = @_;
5621: my ($homeserver,$response);
5622: my $create_passwd = 0;
5623: my $authchk = '';
5624: if ($udom =~ /^$match_domain$/) {
5625: $homeserver = &domain($udom,'primary');
5626: }
5627: if ($homeserver eq '') {
5628: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5629: $homeserver = &homeserver($cnum,$cdom);
5630: }
5631: }
5632: if ($homeserver eq '') {
5633: $authchk = 'nodomain';
5634: } else {
5635: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5636: if ($response eq 'refused') {
5637: $authchk = 'refused';
5638: } else {
5639: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5640: }
5641: }
5642: return ($authparam,$create_passwd,$authchk);
5643: }
5644:
5645: sub auto_photo_permission {
5646: my ($cnum,$cdom,$students) = @_;
5647: my $homeserver = &homeserver($cnum,$cdom);
5648: my ($outcome,$perm_reqd,$conditions) =
5649: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5650: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5651: return (undef,undef);
5652: }
5653: return ($outcome,$perm_reqd,$conditions);
5654: }
5655:
5656: sub auto_checkphotos {
5657: my ($uname,$udom,$pid) = @_;
5658: my $homeserver = &homeserver($uname,$udom);
5659: my ($result,$resulttype);
5660: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5661: &escape($uname).':'.&escape($pid),
5662: $homeserver));
5663: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5664: return (undef,undef);
5665: }
5666: if ($outcome) {
5667: ($result,$resulttype) = split(/:/,$outcome);
5668: }
5669: return ($result,$resulttype);
5670: }
5671:
5672: sub auto_photochoice {
5673: my ($cnum,$cdom) = @_;
5674: my $homeserver = &homeserver($cnum,$cdom);
5675: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5676: &escape($cdom),
5677: $homeserver)));
5678: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5679: return (undef,undef);
5680: }
5681: return ($update,$comment);
5682: }
5683:
5684: sub auto_photoupdate {
5685: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5686: my $homeserver = &homeserver($cnum,$dom);
5687: my $host=&hostname($homeserver);
5688: my $cmd = '';
5689: my $maxtries = 1;
5690: foreach my $affiliate (keys(%{$affiliatesref})) {
5691: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5692: }
5693: $cmd =~ s/%%$//;
5694: $cmd = &escape($cmd);
5695: my $query = 'institutionalphotos';
5696: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5697: unless ($queryid=~/^\Q$host\E\_/) {
5698: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5699: return 'error: '.$queryid;
5700: }
5701: my $reply = &get_query_reply($queryid);
5702: my $tries = 1;
5703: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5704: $reply = &get_query_reply($queryid);
5705: $tries ++;
5706: }
5707: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5708: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5709: } else {
5710: my @responses = split(/:/,$reply);
5711: my $outcome = shift(@responses);
5712: foreach my $item (@responses) {
5713: my ($key,$value) = split(/=/,$item);
5714: $$photo{$key} = $value;
5715: }
5716: return $outcome;
5717: }
5718: return 'error';
5719: }
5720:
5721: sub auto_instcode_format {
5722: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5723: $cat_order) = @_;
5724: my $courses = '';
5725: my @homeservers;
5726: if ($caller eq 'global') {
5727: my %servers = &get_servers($codedom,'library');
5728: foreach my $tryserver (keys(%servers)) {
5729: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5730: push(@homeservers,$tryserver);
5731: }
5732: }
5733: } elsif ($caller eq 'requests') {
5734: if ($codedom =~ /^$match_domain$/) {
5735: my $chome = &domain($codedom,'primary');
5736: unless ($chome eq 'no_host') {
5737: push(@homeservers,$chome);
5738: }
5739: }
5740: } else {
5741: push(@homeservers,&homeserver($caller,$codedom));
5742: }
5743: foreach my $code (keys(%{$instcodes})) {
5744: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5745: }
5746: chop($courses);
5747: my $ok_response = 0;
5748: my $response;
5749: while (@homeservers > 0 && $ok_response == 0) {
5750: my $server = shift(@homeservers);
5751: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5752: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5753: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5754: split(/:/,$response);
5755: %{$codes} = (%{$codes},&str2hash($codes_str));
5756: push(@{$codetitles},&str2array($codetitles_str));
5757: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5758: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5759: $ok_response = 1;
5760: }
5761: }
5762: if ($ok_response) {
5763: return 'ok';
5764: } else {
5765: return $response;
5766: }
5767: }
5768:
5769: sub auto_instcode_defaults {
5770: my ($domain,$returnhash,$code_order) = @_;
5771: my @homeservers;
5772:
5773: my %servers = &get_servers($domain,'library');
5774: foreach my $tryserver (keys(%servers)) {
5775: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5776: push(@homeservers,$tryserver);
5777: }
5778: }
5779:
5780: my $response;
5781: foreach my $server (@homeservers) {
5782: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5783: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5784:
5785: foreach my $pair (split(/\&/,$response)) {
5786: my ($name,$value)=split(/\=/,$pair);
5787: if ($name eq 'code_order') {
5788: @{$code_order} = split(/\&/,&unescape($value));
5789: } else {
5790: $returnhash->{&unescape($name)}=&unescape($value);
5791: }
5792: }
5793: return 'ok';
5794: }
5795:
5796: return $response;
5797: }
5798:
5799: sub auto_possible_instcodes {
5800: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
5801: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
5802: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
5803: return;
5804: }
5805: my (@homeservers,$uhome);
5806: if (defined(&domain($domain,'primary'))) {
5807: $uhome=&domain($domain,'primary');
5808: push(@homeservers,&domain($domain,'primary'));
5809: } else {
5810: my %servers = &get_servers($domain,'library');
5811: foreach my $tryserver (keys(%servers)) {
5812: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5813: push(@homeservers,$tryserver);
5814: }
5815: }
5816: }
5817: my $response;
5818: foreach my $server (@homeservers) {
5819: $response=&reply('autopossibleinstcodes:'.$domain,$server);
5820: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5821: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
5822: split(':',$response);
5823: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
5824: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
5825: foreach my $item (split('&',$cat_title)) {
5826: my ($name,$value)=split('=',$item);
5827: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
5828: }
5829: foreach my $item (split('&',$cat_order)) {
5830: my ($name,$value)=split('=',$item);
5831: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
5832: }
5833: return 'ok';
5834: }
5835: return $response;
5836: }
5837:
5838: sub auto_courserequest_checks {
5839: my ($dom) = @_;
5840: my ($homeserver,%validations);
5841: if ($dom =~ /^$match_domain$/) {
5842: $homeserver = &domain($dom,'primary');
5843: }
5844: unless ($homeserver eq 'no_host') {
5845: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
5846: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
5847: my @items = split(/&/,$response);
5848: foreach my $item (@items) {
5849: my ($key,$value) = split('=',$item);
5850: $validations{&unescape($key)} = &thaw_unescape($value);
5851: }
5852: }
5853: }
5854: return %validations;
5855: }
5856:
5857: sub auto_courserequest_validation {
5858: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
5859: my ($homeserver,$response);
5860: if ($dom =~ /^$match_domain$/) {
5861: $homeserver = &domain($dom,'primary');
5862: }
5863: unless ($homeserver eq 'no_host') {
5864:
5865: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
5866: ':'.&escape($crstype).':'.&escape($inststatuslist).
5867: ':'.&escape($instcode).':'.&escape($instseclist),
5868: $homeserver));
5869: }
5870: return $response;
5871: }
5872:
5873: sub auto_validate_class_sec {
5874: my ($cdom,$cnum,$owners,$inst_class) = @_;
5875: my $homeserver = &homeserver($cnum,$cdom);
5876: my $ownerlist;
5877: if (ref($owners) eq 'ARRAY') {
5878: $ownerlist = join(',',@{$owners});
5879: } else {
5880: $ownerlist = $owners;
5881: }
5882: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5883: &escape($ownerlist).':'.$cdom,$homeserver);
5884: return $response;
5885: }
5886:
5887: # ------------------------------------------------------- Course Group routines
5888:
5889: sub get_coursegroups {
5890: my ($cdom,$cnum,$group,$namespace) = @_;
5891: return(&dump($namespace,$cdom,$cnum,$group));
5892: }
5893:
5894: sub modify_coursegroup {
5895: my ($cdom,$cnum,$groupsettings) = @_;
5896: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5897: }
5898:
5899: sub toggle_coursegroup_status {
5900: my ($cdom,$cnum,$group,$action) = @_;
5901: my ($from_namespace,$to_namespace);
5902: if ($action eq 'delete') {
5903: $from_namespace = 'coursegroups';
5904: $to_namespace = 'deleted_groups';
5905: } else {
5906: $from_namespace = 'deleted_groups';
5907: $to_namespace = 'coursegroups';
5908: }
5909: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5910: if (my $tmp = &error(%curr_group)) {
5911: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5912: return ('read error',$tmp);
5913: } else {
5914: my %savedsettings = %curr_group;
5915: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5916: my $deloutcome;
5917: if ($result eq 'ok') {
5918: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5919: } else {
5920: return ('write error',$result);
5921: }
5922: if ($deloutcome eq 'ok') {
5923: return 'ok';
5924: } else {
5925: return ('delete error',$deloutcome);
5926: }
5927: }
5928: }
5929:
5930: sub modify_group_roles {
5931: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5932: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5933: my $role = 'gr/'.&escape($userprivs);
5934: my ($uname,$udom) = split(/:/,$user);
5935: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5936: if ($result eq 'ok') {
5937: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5938: }
5939: return $result;
5940: }
5941:
5942: sub modify_coursegroup_membership {
5943: my ($cdom,$cnum,$membership) = @_;
5944: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5945: return $result;
5946: }
5947:
5948: sub get_active_groups {
5949: my ($udom,$uname,$cdom,$cnum) = @_;
5950: my $now = time;
5951: my %groups = ();
5952: foreach my $key (keys(%env)) {
5953: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5954: my ($start,$end) = split(/\./,$env{$key});
5955: if (($end!=0) && ($end<$now)) { next; }
5956: if (($start!=0) && ($start>$now)) { next; }
5957: if ($1 eq $cdom && $2 eq $cnum) {
5958: $groups{$3} = $env{$key} ;
5959: }
5960: }
5961: }
5962: return %groups;
5963: }
5964:
5965: sub get_group_membership {
5966: my ($cdom,$cnum,$group) = @_;
5967: return(&dump('groupmembership',$cdom,$cnum,$group));
5968: }
5969:
5970: sub get_users_groups {
5971: my ($udom,$uname,$courseid) = @_;
5972: my @usersgroups;
5973: my $cachetime=1800;
5974:
5975: my $hashid="$udom:$uname:$courseid";
5976: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5977: if (defined($cached)) {
5978: @usersgroups = split(/:/,$grouplist);
5979: } else {
5980: $grouplist = '';
5981: my $courseurl = &courseid_to_courseurl($courseid);
5982: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5983: my $access_end = $env{'course.'.$courseid.
5984: '.default_enrollment_end_date'};
5985: my $now = time;
5986: foreach my $key (keys(%roleshash)) {
5987: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5988: my $group = $1;
5989: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5990: my $start = $2;
5991: my $end = $1;
5992: if ($start == -1) { next; } # deleted from group
5993: if (($start!=0) && ($start>$now)) { next; }
5994: if (($end!=0) && ($end<$now)) {
5995: if ($access_end && $access_end < $now) {
5996: if ($access_end - $end < 86400) {
5997: push(@usersgroups,$group);
5998: }
5999: }
6000: next;
6001: }
6002: push(@usersgroups,$group);
6003: }
6004: }
6005: }
6006: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6007: $grouplist = join(':',@usersgroups);
6008: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6009: }
6010: return @usersgroups;
6011: }
6012:
6013: sub devalidate_getgroups_cache {
6014: my ($udom,$uname,$cdom,$cnum)=@_;
6015: my $courseid = $cdom.'_'.$cnum;
6016:
6017: my $hashid="$udom:$uname:$courseid";
6018: &devalidate_cache_new('getgroups',$hashid);
6019: }
6020:
6021: # ------------------------------------------------------------------ Plain Text
6022:
6023: sub plaintext {
6024: my ($short,$type,$cid,$forcedefault) = @_;
6025: if ($short =~ /^cr/) {
6026: return (split('/',$short))[-1];
6027: }
6028: if (!defined($cid)) {
6029: $cid = $env{'request.course.id'};
6030: }
6031: if (defined($cid) && ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '')) {
6032: unless ($forcedefault) {
6033: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6034: &Apache::lonlocal::mt_escape(\$roletext);
6035: return &Apache::lonlocal::mt($roletext);
6036: }
6037: }
6038: my %rolenames = (
6039: Course => 'std',
6040: Community => 'alt1',
6041: );
6042: if (defined($type) &&
6043: defined($rolenames{$type}) &&
6044: defined($prp{$short}{$rolenames{$type}})) {
6045: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6046: } else {
6047: return &Apache::lonlocal::mt($prp{$short}{'std'});
6048: }
6049: }
6050:
6051: # ----------------------------------------------------------------- Assign Role
6052:
6053: sub assignrole {
6054: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6055: $context)=@_;
6056: my $mrole;
6057: if ($role =~ /^cr\//) {
6058: my $cwosec=$url;
6059: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6060: unless (&allowed('ccr',$cwosec)) {
6061: my $refused = 1;
6062: if ($context eq 'requestcourses') {
6063: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6064: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6065: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6066: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6067: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6068: if ($crsenv{'internal.courseowner'} eq
6069: $env{'user.name'}.':'.$env{'user.domain'}) {
6070: $refused = '';
6071: }
6072: }
6073: }
6074: }
6075: }
6076: if ($refused) {
6077: &logthis('Refused custom assignrole: '.
6078: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6079: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6080: return 'refused';
6081: }
6082: }
6083: $mrole='cr';
6084: } elsif ($role =~ /^gr\//) {
6085: my $cwogrp=$url;
6086: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6087: unless (&allowed('mdg',$cwogrp)) {
6088: &logthis('Refused group assignrole: '.
6089: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6090: $env{'user.name'}.' at '.$env{'user.domain'});
6091: return 'refused';
6092: }
6093: $mrole='gr';
6094: } else {
6095: my $cwosec=$url;
6096: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6097: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6098: my $refused;
6099: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6100: if (!(&allowed('c'.$role,$url))) {
6101: $refused = 1;
6102: }
6103: } else {
6104: $refused = 1;
6105: }
6106: if ($refused) {
6107: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6108: $refused = '';
6109: } elsif ($context eq 'requestcourses') {
6110: my @possroles = ('st','ta','ep','in','cc');
6111: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6112: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6113: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6114: if ($crsenv{'internal.courseowner'} eq
6115: $env{'user.name'}.':'.$env{'user.domain'}) {
6116: $refused = '';
6117: }
6118: }
6119: }
6120: if ($refused) {
6121: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6122: ' '.$role.' '.$end.' '.$start.' by '.
6123: $env{'user.name'}.' at '.$env{'user.domain'});
6124: return 'refused';
6125: }
6126: }
6127: }
6128: $mrole=$role;
6129: }
6130: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6131: "$udom:$uname:$url".'_'."$mrole=$role";
6132: if ($end) { $command.='_'.$end; }
6133: if ($start) {
6134: if ($end) {
6135: $command.='_'.$start;
6136: } else {
6137: $command.='_0_'.$start;
6138: }
6139: }
6140: my $origstart = $start;
6141: my $origend = $end;
6142: my $delflag;
6143: # actually delete
6144: if ($deleteflag) {
6145: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6146: # modify command to delete the role
6147: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6148: "$udom:$uname:$url".'_'."$mrole";
6149: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6150: # set start and finish to negative values for userrolelog
6151: $start=-1;
6152: $end=-1;
6153: $delflag = 1;
6154: }
6155: }
6156: # send command
6157: my $answer=&reply($command,&homeserver($uname,$udom));
6158: # log new user role if status is ok
6159: if ($answer eq 'ok') {
6160: &userrolelog($role,$uname,$udom,$url,$start,$end);
6161: # for course roles, perform group memberships changes triggered by role change.
6162: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6163: unless ($role =~ /^gr/) {
6164: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6165: $origstart,$selfenroll,$context);
6166: }
6167: }
6168: return $answer;
6169: }
6170:
6171: # -------------------------------------------------- Modify user authentication
6172: # Overrides without validation
6173:
6174: sub modifyuserauth {
6175: my ($udom,$uname,$umode,$upass)=@_;
6176: my $uhome=&homeserver($uname,$udom);
6177: unless (&allowed('mau',$udom)) { return 'refused'; }
6178: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6179: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6180: ' in domain '.$env{'request.role.domain'});
6181: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6182: &escape($upass),$uhome);
6183: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6184: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6185: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6186: &log($udom,,$uname,$uhome,
6187: 'Authentication changed by '.$env{'user.domain'}.', '.
6188: $env{'user.name'}.', '.$umode.
6189: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6190: unless ($reply eq 'ok') {
6191: &logthis('Authentication mode error: '.$reply);
6192: return 'error: '.$reply;
6193: }
6194: return 'ok';
6195: }
6196:
6197: # --------------------------------------------------------------- Modify a user
6198:
6199: sub modifyuser {
6200: my ($udom, $uname, $uid,
6201: $umode, $upass, $first,
6202: $middle, $last, $gene,
6203: $forceid, $desiredhome, $email, $inststatus)=@_;
6204: $udom= &LONCAPA::clean_domain($udom);
6205: $uname=&LONCAPA::clean_username($uname);
6206: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6207: $umode.', '.$first.', '.$middle.', '.
6208: $last.', '.$gene.'(forceid: '.$forceid.')'.
6209: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6210: ' desiredhome not specified').
6211: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6212: ' in domain '.$env{'request.role.domain'});
6213: my $uhome=&homeserver($uname,$udom,'true');
6214: # ----------------------------------------------------------------- Create User
6215: if (($uhome eq 'no_host') &&
6216: (($umode && $upass) || ($umode eq 'localauth'))) {
6217: my $unhome='';
6218: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6219: $unhome = $desiredhome;
6220: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6221: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6222: } else { # load balancing routine for determining $unhome
6223: my $loadm=10000000;
6224: my %servers = &get_servers($udom,'library');
6225: foreach my $tryserver (keys(%servers)) {
6226: my $answer=reply('load',$tryserver);
6227: if (($answer=~/\d+/) && ($answer<$loadm)) {
6228: $loadm=$answer;
6229: $unhome=$tryserver;
6230: }
6231: }
6232: }
6233: if (($unhome eq '') || ($unhome eq 'no_host')) {
6234: return 'error: unable to find a home server for '.$uname.
6235: ' in domain '.$udom;
6236: }
6237: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6238: &escape($upass),$unhome);
6239: unless ($reply eq 'ok') {
6240: return 'error: '.$reply;
6241: }
6242: $uhome=&homeserver($uname,$udom,'true');
6243: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6244: return 'error: unable verify users home machine.';
6245: }
6246: } # End of creation of new user
6247: # ---------------------------------------------------------------------- Add ID
6248: if ($uid) {
6249: $uid=~tr/A-Z/a-z/;
6250: my %uidhash=&idrget($udom,$uname);
6251: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6252: && (!$forceid)) {
6253: unless ($uid eq $uidhash{$uname}) {
6254: return 'error: user id "'.$uid.'" does not match '.
6255: 'current user id "'.$uidhash{$uname}.'".';
6256: }
6257: } else {
6258: &idput($udom,($uname => $uid));
6259: }
6260: }
6261: # -------------------------------------------------------------- Add names, etc
6262: my @tmp=&get('environment',
6263: ['firstname','middlename','lastname','generation','id',
6264: 'permanentemail','inststatus'],
6265: $udom,$uname);
6266: my %names;
6267: if ($tmp[0] =~ m/^error:.*/) {
6268: %names=();
6269: } else {
6270: %names = @tmp;
6271: }
6272: #
6273: # Make sure to not trash student environment if instructor does not bother
6274: # to supply name and email information
6275: #
6276: if ($first) { $names{'firstname'} = $first; }
6277: if (defined($middle)) { $names{'middlename'} = $middle; }
6278: if ($last) { $names{'lastname'} = $last; }
6279: if (defined($gene)) { $names{'generation'} = $gene; }
6280: if ($email) {
6281: $email=~s/[^\w\@\.\-\,]//gs;
6282: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6283: }
6284: if ($uid) { $names{'id'} = $uid; }
6285: if (defined($inststatus)) {
6286: $names{'inststatus'} = '';
6287: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6288: if (ref($usertypes) eq 'HASH') {
6289: my @okstatuses;
6290: foreach my $item (split(/:/,$inststatus)) {
6291: if (defined($usertypes->{$item})) {
6292: push(@okstatuses,$item);
6293: }
6294: }
6295: if (@okstatuses) {
6296: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6297: }
6298: }
6299: }
6300: my $reply = &put('environment', \%names, $udom,$uname);
6301: if ($reply ne 'ok') { return 'error: '.$reply; }
6302: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6303: &devalidate_cache_new('namescache',$uname.':'.$udom);
6304: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
6305: $umode.', '.$first.', '.$middle.', '.
6306: $last.', '.$gene.', '.$email.', '.$inststatus;
6307: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6308: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6309: } else {
6310: $logmsg .= ' during self creation';
6311: }
6312: &logthis($logmsg);
6313: return 'ok';
6314: }
6315:
6316: # -------------------------------------------------------------- Modify student
6317:
6318: sub modifystudent {
6319: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6320: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6321: $selfenroll,$context,$inststatus)=@_;
6322: if (!$cid) {
6323: unless ($cid=$env{'request.course.id'}) {
6324: return 'not_in_class';
6325: }
6326: }
6327: # --------------------------------------------------------------- Make the user
6328: my $reply=&modifyuser
6329: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6330: $desiredhome,$email,$inststatus);
6331: unless ($reply eq 'ok') { return $reply; }
6332: # This will cause &modify_student_enrollment to get the uid from the
6333: # students environment
6334: $uid = undef if (!$forceid);
6335: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6336: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6337: return $reply;
6338: }
6339:
6340: sub modify_student_enrollment {
6341: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6342: my ($cdom,$cnum,$chome);
6343: if (!$cid) {
6344: unless ($cid=$env{'request.course.id'}) {
6345: return 'not_in_class';
6346: }
6347: $cdom=$env{'course.'.$cid.'.domain'};
6348: $cnum=$env{'course.'.$cid.'.num'};
6349: } else {
6350: ($cdom,$cnum)=split(/_/,$cid);
6351: }
6352: $chome=$env{'course.'.$cid.'.home'};
6353: if (!$chome) {
6354: $chome=&homeserver($cnum,$cdom);
6355: }
6356: if (!$chome) { return 'unknown_course'; }
6357: # Make sure the user exists
6358: my $uhome=&homeserver($uname,$udom);
6359: if (($uhome eq '') || ($uhome eq 'no_host')) {
6360: return 'error: no such user';
6361: }
6362: # Get student data if we were not given enough information
6363: if (!defined($first) || $first eq '' ||
6364: !defined($last) || $last eq '' ||
6365: !defined($uid) || $uid eq '' ||
6366: !defined($middle) || $middle eq '' ||
6367: !defined($gene) || $gene eq '') {
6368: # They did not supply us with enough data to enroll the student, so
6369: # we need to pick up more information.
6370: my %tmp = &get('environment',
6371: ['firstname','middlename','lastname', 'generation','id']
6372: ,$udom,$uname);
6373:
6374: #foreach my $key (keys(%tmp)) {
6375: # &logthis("key $key = ".$tmp{$key});
6376: #}
6377: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6378: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6379: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6380: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6381: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6382: }
6383: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6384: my $reply=cput('classlist',
6385: {"$uname:$udom" =>
6386: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6387: $cdom,$cnum);
6388: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6389: return 'error: '.$reply;
6390: } else {
6391: &devalidate_getsection_cache($udom,$uname,$cid);
6392: }
6393: # Add student role to user
6394: my $uurl='/'.$cid;
6395: $uurl=~s/\_/\//g;
6396: if ($usec) {
6397: $uurl.='/'.$usec;
6398: }
6399: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
6400: }
6401:
6402: sub format_name {
6403: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
6404: my $name;
6405: if ($first ne 'lastname') {
6406: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
6407: } else {
6408: if ($lastname=~/\S/) {
6409: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
6410: $name=~s/\s+,/,/;
6411: } else {
6412: $name.= $firstname.' '.$middlename.' '.$generation;
6413: }
6414: }
6415: $name=~s/^\s+//;
6416: $name=~s/\s+$//;
6417: $name=~s/\s+/ /g;
6418: return $name;
6419: }
6420:
6421: # ------------------------------------------------- Write to course preferences
6422:
6423: sub writecoursepref {
6424: my ($courseid,%prefs)=@_;
6425: $courseid=~s/^\///;
6426: $courseid=~s/\_/\//g;
6427: my ($cdomain,$cnum)=split(/\//,$courseid);
6428: my $chome=homeserver($cnum,$cdomain);
6429: if (($chome eq '') || ($chome eq 'no_host')) {
6430: return 'error: no such course';
6431: }
6432: my $cstring='';
6433: foreach my $pref (keys(%prefs)) {
6434: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
6435: }
6436: $cstring=~s/\&$//;
6437: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
6438: }
6439:
6440: # ---------------------------------------------------------- Make/modify course
6441:
6442: sub createcourse {
6443: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
6444: $course_owner,$crstype,$cnum,$context,$category)=@_;
6445: $url=&declutter($url);
6446: my $cid='';
6447: unless (&allowed('ccc',$udom)) {
6448: if ($context eq 'requestcourses') {
6449: unless (&usertools_access($course_owner,$udom,$category,undef,$context)) {
6450: return 'refused';
6451: }
6452: } else {
6453: return 'refused';
6454: }
6455: }
6456: # --------------------------------------------------------------- Get Unique ID
6457: my $uname;
6458: if ($cnum =~ /^$match_courseid$/) {
6459: my $chome=&homeserver($cnum,$udom,'true');
6460: if (($chome eq '') || ($chome eq 'no_host')) {
6461: $uname = $cnum;
6462: } else {
6463: $uname = &generate_coursenum($udom);
6464: }
6465: } else {
6466: $uname = &generate_coursenum($udom);
6467: }
6468: return $uname if ($uname =~ /^error/);
6469: # -------------------------------------------------- Check supplied server name
6470: $course_server = $env{'user.homeserver'} if (! defined($course_server));
6471: if (! &is_library($course_server)) {
6472: return 'error:bad server name '.$course_server;
6473: }
6474: # ------------------------------------------------------------- Make the course
6475: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
6476: $course_server);
6477: unless ($reply eq 'ok') { return 'error: '.$reply; }
6478: my $uhome=&homeserver($uname,$udom,'true');
6479: if (($uhome eq '') || ($uhome eq 'no_host')) {
6480: return 'error: no such course';
6481: }
6482: # ----------------------------------------------------------------- Course made
6483: # log existence
6484: my $newcourse = {
6485: $udom.'_'.$uname => {
6486: description => $description,
6487: inst_code => $inst_code,
6488: owner => $course_owner,
6489: type => $crstype,
6490: },
6491: };
6492: &courseidput($udom,$newcourse,$uhome,'notime');
6493: # set toplevel url
6494: my $topurl=$url;
6495: unless ($nonstandard) {
6496: # ------------------------------------------ For standard courses, make top url
6497: my $mapurl=&clutter($url);
6498: if ($mapurl eq '/res/') { $mapurl=''; }
6499: $env{'form.initmap'}=(<<ENDINITMAP);
6500: <map>
6501: <resource id="1" type="start"></resource>
6502: <resource id="2" src="$mapurl"></resource>
6503: <resource id="3" type="finish"></resource>
6504: <link index="1" from="1" to="2"></link>
6505: <link index="2" from="2" to="3"></link>
6506: </map>
6507: ENDINITMAP
6508: $topurl=&declutter(
6509: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
6510: );
6511: }
6512: # ----------------------------------------------------------- Write preferences
6513: &writecoursepref($udom.'_'.$uname,
6514: ('description' => $description,
6515: 'url' => $topurl));
6516: return '/'.$udom.'/'.$uname;
6517: }
6518:
6519: # ------------------------------------------------------------------- Create ID
6520: sub generate_coursenum {
6521: my ($udom) = @_;
6522: my $domdesc = &domain($udom);
6523: return 'error: invalid domain' if ($domdesc eq '');
6524: my $uname=int(1+rand(9)).
6525: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6526: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6527: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6528: # ----------------------------------------------- Make sure that does not exist
6529: my $uhome=&homeserver($uname,$udom,'true');
6530: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6531: $uname=int(1+rand(9)).
6532: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
6533: substr($$.time,0,5).unpack("H8",pack("I32",time)).
6534: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
6535: $uhome=&homeserver($uname,$udom,'true');
6536: unless (($uhome eq '') || ($uhome eq 'no_host')) {
6537: return 'error: unable to generate unique course-ID';
6538: }
6539: }
6540: return $uname;
6541: }
6542:
6543: sub is_course {
6544: my ($cdom,$cnum) = @_;
6545: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
6546: undef,'.');
6547: if (exists($courses{$cdom.'_'.$cnum})) {
6548: return 1;
6549: }
6550: return 0;
6551: }
6552:
6553: sub store_userdata {
6554: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
6555: my $result;
6556: if ($datakey ne '') {
6557: if (ref($storehash) eq 'HASH') {
6558: if ($udom eq '' || $uname eq '') {
6559: $udom = $env{'user.domain'};
6560: $uname = $env{'user.name'};
6561: }
6562: my $uhome=&homeserver($uname,$udom);
6563: if (($uhome eq '') || ($uhome eq 'no_host')) {
6564: $result = 'error: no_host';
6565: } else {
6566: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
6567: $storehash->{'host'} = $perlvar{'lonHostID'};
6568:
6569: my $namevalue='';
6570: foreach my $key (keys(%{$storehash})) {
6571: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6572: }
6573: $namevalue=~s/\&$//;
6574: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
6575: "$namespace:$datakey:$namevalue",$uhome);
6576: }
6577: } else {
6578: $result = 'error: data to store was not a hash reference';
6579: }
6580: } else {
6581: $result= 'error: invalid requestkey';
6582: }
6583: return $result;
6584: }
6585:
6586: # ---------------------------------------------------------- Assign Custom Role
6587:
6588: sub assigncustomrole {
6589: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
6590: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
6591: $end,$start,$deleteflag,$selfenroll,$context);
6592: }
6593:
6594: # ----------------------------------------------------------------- Revoke Role
6595:
6596: sub revokerole {
6597: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
6598: my $now=time;
6599: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
6600: }
6601:
6602: # ---------------------------------------------------------- Revoke Custom Role
6603:
6604: sub revokecustomrole {
6605: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
6606: my $now=time;
6607: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
6608: $deleteflag,$selfenroll,$context);
6609: }
6610:
6611: # ------------------------------------------------------------ Disk usage
6612: sub diskusage {
6613: my ($udom,$uname,$directorypath,$getpropath)=@_;
6614: $directorypath =~ s/\/$//;
6615: my $listing=&reply('du2:'.&escape($directorypath).':'
6616: .&escape($getpropath).':'.&escape($uname).':'
6617: .&escape($udom),homeserver($uname,$udom));
6618: if ($listing eq 'unknown_cmd') {
6619: if ($getpropath) {
6620: $directorypath = &propath($udom,$uname).'/'.$directorypath;
6621: }
6622: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
6623: }
6624: return $listing;
6625: }
6626:
6627: sub is_locked {
6628: my ($file_name, $domain, $user) = @_;
6629: my @check;
6630: my $is_locked;
6631: push @check, $file_name;
6632: my %locked = &get('file_permissions',\@check,
6633: $env{'user.domain'},$env{'user.name'});
6634: my ($tmp)=keys(%locked);
6635: if ($tmp=~/^error:/) { undef(%locked); }
6636:
6637: if (ref($locked{$file_name}) eq 'ARRAY') {
6638: $is_locked = 'false';
6639: foreach my $entry (@{$locked{$file_name}}) {
6640: if (ref($entry) eq 'ARRAY') {
6641: $is_locked = 'true';
6642: last;
6643: }
6644: }
6645: } else {
6646: $is_locked = 'false';
6647: }
6648: }
6649:
6650: sub declutter_portfile {
6651: my ($file) = @_;
6652: $file =~ s{^(/portfolio/|portfolio/)}{/};
6653: return $file;
6654: }
6655:
6656: # ------------------------------------------------------------- Mark as Read Only
6657:
6658: sub mark_as_readonly {
6659: my ($domain,$user,$files,$what) = @_;
6660: my %current_permissions = &dump('file_permissions',$domain,$user);
6661: my ($tmp)=keys(%current_permissions);
6662: if ($tmp=~/^error:/) { undef(%current_permissions); }
6663: foreach my $file (@{$files}) {
6664: $file = &declutter_portfile($file);
6665: push(@{$current_permissions{$file}},$what);
6666: }
6667: &put('file_permissions',\%current_permissions,$domain,$user);
6668: return;
6669: }
6670:
6671: # ------------------------------------------------------------Save Selected Files
6672:
6673: sub save_selected_files {
6674: my ($user, $path, @files) = @_;
6675: my $filename = $user."savedfiles";
6676: my @other_files = &files_not_in_path($user, $path);
6677: open (OUT, '>'.$tmpdir.$filename);
6678: foreach my $file (@files) {
6679: print (OUT $env{'form.currentpath'}.$file."\n");
6680: }
6681: foreach my $file (@other_files) {
6682: print (OUT $file."\n");
6683: }
6684: close (OUT);
6685: return 'ok';
6686: }
6687:
6688: sub clear_selected_files {
6689: my ($user) = @_;
6690: my $filename = $user."savedfiles";
6691: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6692: print (OUT undef);
6693: close (OUT);
6694: return ("ok");
6695: }
6696:
6697: sub files_in_path {
6698: my ($user, $path) = @_;
6699: my $filename = $user."savedfiles";
6700: my %return_files;
6701: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6702: while (my $line_in = <IN>) {
6703: chomp ($line_in);
6704: my @paths_and_file = split (m!/!, $line_in);
6705: my $file_part = pop (@paths_and_file);
6706: my $path_part = join ('/', @paths_and_file);
6707: $path_part.='/';
6708: my $path_and_file = $path_part.$file_part;
6709: if ($path_part eq $path) {
6710: $return_files{$file_part}= 'selected';
6711: }
6712: }
6713: close (IN);
6714: return (\%return_files);
6715: }
6716:
6717: # called in portfolio select mode, to show files selected NOT in current directory
6718: sub files_not_in_path {
6719: my ($user, $path) = @_;
6720: my $filename = $user."savedfiles";
6721: my @return_files;
6722: my $path_part;
6723: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6724: while (my $line = <IN>) {
6725: #ok, I know it's clunky, but I want it to work
6726: my @paths_and_file = split(m|/|, $line);
6727: my $file_part = pop(@paths_and_file);
6728: chomp($file_part);
6729: my $path_part = join('/', @paths_and_file);
6730: $path_part .= '/';
6731: my $path_and_file = $path_part.$file_part;
6732: if ($path_part ne $path) {
6733: push(@return_files, ($path_and_file));
6734: }
6735: }
6736: close(OUT);
6737: return (@return_files);
6738: }
6739:
6740: #----------------------------------------------Get portfolio file permissions
6741:
6742: sub get_portfile_permissions {
6743: my ($domain,$user) = @_;
6744: my %current_permissions = &dump('file_permissions',$domain,$user);
6745: my ($tmp)=keys(%current_permissions);
6746: if ($tmp=~/^error:/) { undef(%current_permissions); }
6747: return \%current_permissions;
6748: }
6749:
6750: #---------------------------------------------Get portfolio file access controls
6751:
6752: sub get_access_controls {
6753: my ($current_permissions,$group,$file) = @_;
6754: my %access;
6755: my $real_file = $file;
6756: $file =~ s/\.meta$//;
6757: if (defined($file)) {
6758: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6759: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6760: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6761: }
6762: }
6763: } else {
6764: foreach my $key (keys(%{$current_permissions})) {
6765: if ($key =~ /\0accesscontrol$/) {
6766: if (defined($group)) {
6767: if ($key !~ m-^\Q$group\E/-) {
6768: next;
6769: }
6770: }
6771: my ($fullpath) = split(/\0/,$key);
6772: if (ref($$current_permissions{$key}) eq 'HASH') {
6773: foreach my $control (keys(%{$$current_permissions{$key}})) {
6774: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6775: }
6776: }
6777: }
6778: }
6779: }
6780: return %access;
6781: }
6782:
6783: sub modify_access_controls {
6784: my ($file_name,$changes,$domain,$user)=@_;
6785: my ($outcome,$deloutcome);
6786: my %store_permissions;
6787: my %new_values;
6788: my %new_control;
6789: my %translation;
6790: my @deletions = ();
6791: my $now = time;
6792: if (exists($$changes{'activate'})) {
6793: if (ref($$changes{'activate'}) eq 'HASH') {
6794: my @newitems = sort(keys(%{$$changes{'activate'}}));
6795: my $numnew = scalar(@newitems);
6796: for (my $i=0; $i<$numnew; $i++) {
6797: my $newkey = $newitems[$i];
6798: my $newid = &Apache::loncommon::get_cgi_id();
6799: if ($newkey =~ /^\d+:/) {
6800: $newkey =~ s/^(\d+)/$newid/;
6801: $translation{$1} = $newid;
6802: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6803: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6804: $translation{$1} = $newid;
6805: }
6806: $new_values{$file_name."\0".$newkey} =
6807: $$changes{'activate'}{$newitems[$i]};
6808: $new_control{$newkey} = $now;
6809: }
6810: }
6811: }
6812: my %todelete;
6813: my %changed_items;
6814: foreach my $action ('delete','update') {
6815: if (exists($$changes{$action})) {
6816: if (ref($$changes{$action}) eq 'HASH') {
6817: foreach my $key (keys(%{$$changes{$action}})) {
6818: my ($itemnum) = ($key =~ /^([^:]+):/);
6819: if ($action eq 'delete') {
6820: $todelete{$itemnum} = 1;
6821: } else {
6822: $changed_items{$itemnum} = $key;
6823: }
6824: }
6825: }
6826: }
6827: }
6828: # get lock on access controls for file.
6829: my $lockhash = {
6830: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6831: ':'.$env{'user.domain'},
6832: };
6833: my $tries = 0;
6834: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6835:
6836: while (($gotlock ne 'ok') && $tries <3) {
6837: $tries ++;
6838: sleep 1;
6839: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6840: }
6841: if ($gotlock eq 'ok') {
6842: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6843: my ($tmp)=keys(%curr_permissions);
6844: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6845: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6846: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6847: if (ref($curr_controls) eq 'HASH') {
6848: foreach my $control_item (keys(%{$curr_controls})) {
6849: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6850: if (defined($todelete{$itemnum})) {
6851: push(@deletions,$file_name."\0".$control_item);
6852: } else {
6853: if (defined($changed_items{$itemnum})) {
6854: $new_control{$changed_items{$itemnum}} = $now;
6855: push(@deletions,$file_name."\0".$control_item);
6856: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6857: } else {
6858: $new_control{$control_item} = $$curr_controls{$control_item};
6859: }
6860: }
6861: }
6862: }
6863: }
6864: my ($group);
6865: if (&is_course($domain,$user)) {
6866: ($group,my $file) = split(/\//,$file_name,2);
6867: }
6868: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6869: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6870: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6871: # remove lock
6872: my @del_lock = ($file_name."\0".'locked_access_records');
6873: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6874: my $sqlresult =
6875: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
6876: $group);
6877: } else {
6878: $outcome = "error: could not obtain lockfile\n";
6879: }
6880: return ($outcome,$deloutcome,\%new_values,\%translation);
6881: }
6882:
6883: sub make_public_indefinitely {
6884: my ($requrl) = @_;
6885: my $now = time;
6886: my $action = 'activate';
6887: my $aclnum = 0;
6888: if (&is_portfolio_url($requrl)) {
6889: my (undef,$udom,$unum,$file_name,$group) =
6890: &parse_portfolio_url($requrl);
6891: my $current_perms = &get_portfile_permissions($udom,$unum);
6892: my %access_controls = &get_access_controls($current_perms,
6893: $group,$file_name);
6894: foreach my $key (keys(%{$access_controls{$file_name}})) {
6895: my ($num,$scope,$end,$start) =
6896: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6897: if ($scope eq 'public') {
6898: if ($start <= $now && $end == 0) {
6899: $action = 'none';
6900: } else {
6901: $action = 'update';
6902: $aclnum = $num;
6903: }
6904: last;
6905: }
6906: }
6907: if ($action eq 'none') {
6908: return 'ok';
6909: } else {
6910: my %changes;
6911: my $newend = 0;
6912: my $newstart = $now;
6913: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6914: $changes{$action}{$newkey} = {
6915: type => 'public',
6916: time => {
6917: start => $newstart,
6918: end => $newend,
6919: },
6920: };
6921: my ($outcome,$deloutcome,$new_values,$translation) =
6922: &modify_access_controls($file_name,\%changes,$udom,$unum);
6923: return $outcome;
6924: }
6925: } else {
6926: return 'invalid';
6927: }
6928: }
6929:
6930: #------------------------------------------------------Get Marked as Read Only
6931:
6932: sub get_marked_as_readonly {
6933: my ($domain,$user,$what,$group) = @_;
6934: my $current_permissions = &get_portfile_permissions($domain,$user);
6935: my @readonly_files;
6936: my $cmp1=$what;
6937: if (ref($what)) { $cmp1=join('',@{$what}) };
6938: while (my ($file_name,$value) = each(%{$current_permissions})) {
6939: if (defined($group)) {
6940: if ($file_name !~ m-^\Q$group\E/-) {
6941: next;
6942: }
6943: }
6944: if (ref($value) eq "ARRAY"){
6945: foreach my $stored_what (@{$value}) {
6946: my $cmp2=$stored_what;
6947: if (ref($stored_what) eq 'ARRAY') {
6948: $cmp2=join('',@{$stored_what});
6949: }
6950: if ($cmp1 eq $cmp2) {
6951: push(@readonly_files, $file_name);
6952: last;
6953: } elsif (!defined($what)) {
6954: push(@readonly_files, $file_name);
6955: last;
6956: }
6957: }
6958: }
6959: }
6960: return @readonly_files;
6961: }
6962: #-----------------------------------------------------------Get Marked as Read Only Hash
6963:
6964: sub get_marked_as_readonly_hash {
6965: my ($current_permissions,$group,$what) = @_;
6966: my %readonly_files;
6967: while (my ($file_name,$value) = each(%{$current_permissions})) {
6968: if (defined($group)) {
6969: if ($file_name !~ m-^\Q$group\E/-) {
6970: next;
6971: }
6972: }
6973: if (ref($value) eq "ARRAY"){
6974: foreach my $stored_what (@{$value}) {
6975: if (ref($stored_what) eq 'ARRAY') {
6976: foreach my $lock_descriptor(@{$stored_what}) {
6977: if ($lock_descriptor eq 'graded') {
6978: $readonly_files{$file_name} = 'graded';
6979: } elsif ($lock_descriptor eq 'handback') {
6980: $readonly_files{$file_name} = 'handback';
6981: } else {
6982: if (!exists($readonly_files{$file_name})) {
6983: $readonly_files{$file_name} = 'locked';
6984: }
6985: }
6986: }
6987: }
6988: }
6989: }
6990: }
6991: return %readonly_files;
6992: }
6993: # ------------------------------------------------------------ Unmark as Read Only
6994:
6995: sub unmark_as_readonly {
6996: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6997: # for portfolio submissions, $what contains [$symb,$crsid]
6998: my ($domain,$user,$what,$file_name,$group) = @_;
6999: $file_name = &declutter_portfile($file_name);
7000: my $symb_crs = $what;
7001: if (ref($what)) { $symb_crs=join('',@$what); }
7002: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7003: my ($tmp)=keys(%current_permissions);
7004: if ($tmp=~/^error:/) { undef(%current_permissions); }
7005: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7006: foreach my $file (@readonly_files) {
7007: my $clean_file = &declutter_portfile($file);
7008: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7009: my $current_locks = $current_permissions{$file};
7010: my @new_locks;
7011: my @del_keys;
7012: if (ref($current_locks) eq "ARRAY"){
7013: foreach my $locker (@{$current_locks}) {
7014: my $compare=$locker;
7015: if (ref($locker) eq 'ARRAY') {
7016: $compare=join('',@{$locker});
7017: if ($compare ne $symb_crs) {
7018: push(@new_locks, $locker);
7019: }
7020: }
7021: }
7022: if (scalar(@new_locks) > 0) {
7023: $current_permissions{$file} = \@new_locks;
7024: } else {
7025: push(@del_keys, $file);
7026: &del('file_permissions',\@del_keys, $domain, $user);
7027: delete($current_permissions{$file});
7028: }
7029: }
7030: }
7031: &put('file_permissions',\%current_permissions,$domain,$user);
7032: return;
7033: }
7034:
7035: # ------------------------------------------------------------ Directory lister
7036:
7037: sub dirlist {
7038: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7039: $uri=~s/^\///;
7040: $uri=~s/\/$//;
7041: my ($udom, $uname);
7042: if ($getuserdir) {
7043: $udom = $userdomain;
7044: $uname = $username;
7045: } else {
7046: (undef,$udom,$uname)=split(/\//,$uri);
7047: if(defined($userdomain)) {
7048: $udom = $userdomain;
7049: }
7050: if(defined($username)) {
7051: $uname = $username;
7052: }
7053: }
7054: my ($dirRoot,$listing,@listing_results);
7055:
7056: $dirRoot = $perlvar{'lonDocRoot'};
7057: if (defined($getpropath)) {
7058: $dirRoot = &propath($udom,$uname);
7059: $dirRoot =~ s/\/$//;
7060: } elsif (defined($getuserdir)) {
7061: my $subdir=$uname.'__';
7062: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7063: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7064: ."/$udom/$subdir/$uname";
7065: } elsif (defined($alternateRoot)) {
7066: $dirRoot = $alternateRoot;
7067: }
7068:
7069: if($udom) {
7070: if($uname) {
7071: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7072: .$getuserdir.':'.&escape($dirRoot)
7073: .':'.&escape($uname).':'.&escape($udom),
7074: &homeserver($uname,$udom));
7075: if ($listing eq 'unknown_cmd') {
7076: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7077: &homeserver($uname,$udom));
7078: } else {
7079: @listing_results = map { &unescape($_); } split(/:/,$listing);
7080: }
7081: if ($listing eq 'unknown_cmd') {
7082: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7083: &homeserver($uname,$udom));
7084: @listing_results = split(/:/,$listing);
7085: } else {
7086: @listing_results = map { &unescape($_); } split(/:/,$listing);
7087: }
7088: return @listing_results;
7089: } elsif(!$alternateRoot) {
7090: my %allusers;
7091: my %servers = &get_servers($udom,'library');
7092: foreach my $tryserver (keys(%servers)) {
7093: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7094: &escape($udom),$tryserver);
7095: if ($listing eq 'unknown_cmd') {
7096: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7097: $udom, $tryserver);
7098: } else {
7099: @listing_results = map { &unescape($_); } split(/:/,$listing);
7100: }
7101: if ($listing eq 'unknown_cmd') {
7102: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7103: $udom, $tryserver);
7104: @listing_results = split(/:/,$listing);
7105: } else {
7106: @listing_results =
7107: map { &unescape($_); } split(/:/,$listing);
7108: }
7109: if ($listing_results[0] ne 'no_such_dir' &&
7110: $listing_results[0] ne 'empty' &&
7111: $listing_results[0] ne 'con_lost') {
7112: foreach my $line (@listing_results) {
7113: my ($entry) = split(/&/,$line,2);
7114: $allusers{$entry} = 1;
7115: }
7116: }
7117: }
7118: my $alluserstr='';
7119: foreach my $user (sort(keys(%allusers))) {
7120: $alluserstr.=$user.'&user:';
7121: }
7122: $alluserstr=~s/:$//;
7123: return split(/:/,$alluserstr);
7124: } else {
7125: return ('missing user name');
7126: }
7127: } elsif(!defined($getpropath)) {
7128: my @all_domains = sort(&all_domains());
7129: foreach my $domain (@all_domains) {
7130: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7131: }
7132: return @all_domains;
7133: } else {
7134: return ('missing domain');
7135: }
7136: }
7137:
7138: # --------------------------------------------- GetFileTimestamp
7139: # This function utilizes dirlist and returns the date stamp for
7140: # when it was last modified. It will also return an error of -1
7141: # if an error occurs
7142:
7143: sub GetFileTimestamp {
7144: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7145: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7146: $studentName = &LONCAPA::clean_username($studentName);
7147: my ($fileStat) =
7148: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7149: undef,$getuserdir);
7150: my @stats = split('&', $fileStat);
7151: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7152: # @stats contains first the filename, then the stat output
7153: return $stats[10]; # so this is 10 instead of 9.
7154: } else {
7155: return -1;
7156: }
7157: }
7158:
7159: sub stat_file {
7160: my ($uri) = @_;
7161: $uri = &clutter_with_no_wrapper($uri);
7162:
7163: my ($udom,$uname,$file);
7164: if ($uri =~ m-^/(uploaded|editupload)/-) {
7165: ($udom,$uname,$file) =
7166: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7167: $file = 'userfiles/'.$file;
7168: }
7169: if ($uri =~ m-^/res/-) {
7170: ($udom,$uname) =
7171: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7172: $file = $uri;
7173: }
7174:
7175: if (!$udom || !$uname || !$file) {
7176: # unable to handle the uri
7177: return ();
7178: }
7179: my $getpropath;
7180: if ($file =~ /^userfiles\//) {
7181: $getpropath = 1;
7182: }
7183: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7184: my @stats = split('&', $result);
7185:
7186: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7187: shift(@stats); #filename is first
7188: return @stats;
7189: }
7190: return ();
7191: }
7192:
7193: # -------------------------------------------------------- Value of a Condition
7194:
7195: # gets the value of a specific preevaluated condition
7196: # stored in the string $env{user.state.<cid>}
7197: # or looks up a condition reference in the bighash and if if hasn't
7198: # already been evaluated recurses into docondval to get the value of
7199: # the condition, then memoizing it to
7200: # $env{user.state.<cid>.<condition>}
7201: sub directcondval {
7202: my $number=shift;
7203: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7204: &Apache::lonuserstate::evalstate();
7205: }
7206: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7207: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7208: } elsif ($number =~ /^_/) {
7209: my $sub_condition;
7210: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7211: &GDBM_READER(),0640)) {
7212: $sub_condition=$bighash{'conditions'.$number};
7213: untie(%bighash);
7214: }
7215: my $value = &docondval($sub_condition);
7216: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7217: return $value;
7218: }
7219: if ($env{'user.state.'.$env{'request.course.id'}}) {
7220: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7221: } else {
7222: return 2;
7223: }
7224: }
7225:
7226: # get the collection of conditions for this resource
7227: sub condval {
7228: my $condidx=shift;
7229: my $allpathcond='';
7230: foreach my $cond (split(/\|/,$condidx)) {
7231: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7232: $allpathcond.=
7233: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7234: }
7235: }
7236: $allpathcond=~s/\|$//;
7237: return &docondval($allpathcond);
7238: }
7239:
7240: #evaluates an expression of conditions
7241: sub docondval {
7242: my ($allpathcond) = @_;
7243: my $result=0;
7244: if ($env{'request.course.id'}
7245: && defined($allpathcond)) {
7246: my $operand='|';
7247: my @stack;
7248: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7249: if ($chunk eq '(') {
7250: push @stack,($operand,$result);
7251: } elsif ($chunk eq ')') {
7252: my $before=pop @stack;
7253: if (pop @stack eq '&') {
7254: $result=$result>$before?$before:$result;
7255: } else {
7256: $result=$result>$before?$result:$before;
7257: }
7258: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7259: $operand=$chunk;
7260: } else {
7261: my $new=directcondval($chunk);
7262: if ($operand eq '&') {
7263: $result=$result>$new?$new:$result;
7264: } else {
7265: $result=$result>$new?$result:$new;
7266: }
7267: }
7268: }
7269: }
7270: return $result;
7271: }
7272:
7273: # ---------------------------------------------------- Devalidate courseresdata
7274:
7275: sub devalidatecourseresdata {
7276: my ($coursenum,$coursedomain)=@_;
7277: my $hashid=$coursenum.':'.$coursedomain;
7278: &devalidate_cache_new('courseres',$hashid);
7279: }
7280:
7281:
7282: # --------------------------------------------------- Course Resourcedata Query
7283: #
7284: # Parameters:
7285: # $coursenum - Number of the course.
7286: # $coursedomain - Domain at which the course was created.
7287: # Returns:
7288: # A hash of the course parameters along (I think) with timestamps
7289: # and version info.
7290:
7291: sub get_courseresdata {
7292: my ($coursenum,$coursedomain)=@_;
7293: my $coursehom=&homeserver($coursenum,$coursedomain);
7294: my $hashid=$coursenum.':'.$coursedomain;
7295: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7296: my %dumpreply;
7297: unless (defined($cached)) {
7298: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7299: $result=\%dumpreply;
7300: my ($tmp) = keys(%dumpreply);
7301: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7302: &do_cache_new('courseres',$hashid,$result,600);
7303: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7304: return $tmp;
7305: } elsif ($tmp =~ /^(error)/) {
7306: $result=undef;
7307: &do_cache_new('courseres',$hashid,$result,600);
7308: }
7309: }
7310: return $result;
7311: }
7312:
7313: sub devalidateuserresdata {
7314: my ($uname,$udom)=@_;
7315: my $hashid="$udom:$uname";
7316: &devalidate_cache_new('userres',$hashid);
7317: }
7318:
7319: sub get_userresdata {
7320: my ($uname,$udom)=@_;
7321: #most student don\'t have any data set, check if there is some data
7322: if (&EXT_cache_status($udom,$uname)) { return undef; }
7323:
7324: my $hashid="$udom:$uname";
7325: my ($result,$cached)=&is_cached_new('userres',$hashid);
7326: if (!defined($cached)) {
7327: my %resourcedata=&dump('resourcedata',$udom,$uname);
7328: $result=\%resourcedata;
7329: &do_cache_new('userres',$hashid,$result,600);
7330: }
7331: my ($tmp)=keys(%$result);
7332: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7333: return $result;
7334: }
7335: #error 2 occurs when the .db doesn't exist
7336: if ($tmp!~/error: 2 /) {
7337: &logthis("<font color=\"blue\">WARNING:".
7338: " Trying to get resource data for ".
7339: $uname." at ".$udom.": ".
7340: $tmp."</font>");
7341: } elsif ($tmp=~/error: 2 /) {
7342: #&EXT_cache_set($udom,$uname);
7343: &do_cache_new('userres',$hashid,undef,600);
7344: undef($tmp); # not really an error so don't send it back
7345: }
7346: return $tmp;
7347: }
7348: #----------------------------------------------- resdata - return resource data
7349: # Purpose:
7350: # Return resource data for either users or for a course.
7351: # Parameters:
7352: # $name - Course/user name.
7353: # $domain - Name of the domain the user/course is registered on.
7354: # $type - Type of thing $name is (must be 'course' or 'user'
7355: # @which - Array of names of resources desired.
7356: # Returns:
7357: # The value of the first reasource in @which that is found in the
7358: # resource hash.
7359: # Exceptional Conditions:
7360: # If the $type passed in is not valid (not the string 'course' or
7361: # 'user', an undefined reference is returned.
7362: # If none of the resources are found, an undef is returned
7363: sub resdata {
7364: my ($name,$domain,$type,@which)=@_;
7365: my $result;
7366: if ($type eq 'course') {
7367: $result=&get_courseresdata($name,$domain);
7368: } elsif ($type eq 'user') {
7369: $result=&get_userresdata($name,$domain);
7370: }
7371: if (!ref($result)) { return $result; }
7372: foreach my $item (@which) {
7373: if (defined($result->{$item->[0]})) {
7374: return [$result->{$item->[0]},$item->[1]];
7375: }
7376: }
7377: return undef;
7378: }
7379:
7380: #
7381: # EXT resource caching routines
7382: #
7383:
7384: sub clear_EXT_cache_status {
7385: &delenv('cache.EXT.');
7386: }
7387:
7388: sub EXT_cache_status {
7389: my ($target_domain,$target_user) = @_;
7390: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7391: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
7392: # We know already the user has no data
7393: return 1;
7394: } else {
7395: return 0;
7396: }
7397: }
7398:
7399: sub EXT_cache_set {
7400: my ($target_domain,$target_user) = @_;
7401: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
7402: #&appenv({$cachename => time});
7403: }
7404:
7405: # --------------------------------------------------------- Value of a Variable
7406: sub EXT {
7407:
7408: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
7409: unless ($varname) { return ''; }
7410: #get real user name/domain, courseid and symb
7411: my $courseid;
7412: my $publicuser;
7413: if ($symbparm) {
7414: $symbparm=&get_symb_from_alias($symbparm);
7415: }
7416: if (!($uname && $udom)) {
7417: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
7418: if (!$symbparm) { $symbparm=$cursymb; }
7419: } else {
7420: $courseid=$env{'request.course.id'};
7421: }
7422: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
7423: my $rest;
7424: if (defined($therest[0])) {
7425: $rest=join('.',@therest);
7426: } else {
7427: $rest='';
7428: }
7429:
7430: my $qualifierrest=$qualifier;
7431: if ($rest) { $qualifierrest.='.'.$rest; }
7432: my $spacequalifierrest=$space;
7433: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
7434: if ($realm eq 'user') {
7435: # --------------------------------------------------------------- user.resource
7436: if ($space eq 'resource') {
7437: if ( (defined($Apache::lonhomework::parsing_a_problem)
7438: || defined($Apache::lonhomework::parsing_a_task))
7439: &&
7440: ($symbparm eq &symbread()) ) {
7441: # if we are in the middle of processing the resource the
7442: # get the value we are planning on committing
7443: if (defined($Apache::lonhomework::results{$qualifierrest})) {
7444: return $Apache::lonhomework::results{$qualifierrest};
7445: } else {
7446: return $Apache::lonhomework::history{$qualifierrest};
7447: }
7448: } else {
7449: my %restored;
7450: if ($publicuser || $env{'request.state'} eq 'construct') {
7451: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
7452: } else {
7453: %restored=&restore($symbparm,$courseid,$udom,$uname);
7454: }
7455: return $restored{$qualifierrest};
7456: }
7457: # ----------------------------------------------------------------- user.access
7458: } elsif ($space eq 'access') {
7459: # FIXME - not supporting calls for a specific user
7460: return &allowed($qualifier,$rest);
7461: # ------------------------------------------ user.preferences, user.environment
7462: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
7463: if (($uname eq $env{'user.name'}) &&
7464: ($udom eq $env{'user.domain'})) {
7465: return $env{join('.',('environment',$qualifierrest))};
7466: } else {
7467: my %returnhash;
7468: if (!$publicuser) {
7469: %returnhash=&userenvironment($udom,$uname,
7470: $qualifierrest);
7471: }
7472: return $returnhash{$qualifierrest};
7473: }
7474: # ----------------------------------------------------------------- user.course
7475: } elsif ($space eq 'course') {
7476: # FIXME - not supporting calls for a specific user
7477: return $env{join('.',('request.course',$qualifier))};
7478: # ------------------------------------------------------------------- user.role
7479: } elsif ($space eq 'role') {
7480: # FIXME - not supporting calls for a specific user
7481: my ($role,$where)=split(/\./,$env{'request.role'});
7482: if ($qualifier eq 'value') {
7483: return $role;
7484: } elsif ($qualifier eq 'extent') {
7485: return $where;
7486: }
7487: # ----------------------------------------------------------------- user.domain
7488: } elsif ($space eq 'domain') {
7489: return $udom;
7490: # ------------------------------------------------------------------- user.name
7491: } elsif ($space eq 'name') {
7492: return $uname;
7493: # ---------------------------------------------------- Any other user namespace
7494: } else {
7495: my %reply;
7496: if (!$publicuser) {
7497: %reply=&get($space,[$qualifierrest],$udom,$uname);
7498: }
7499: return $reply{$qualifierrest};
7500: }
7501: } elsif ($realm eq 'query') {
7502: # ---------------------------------------------- pull stuff out of query string
7503: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
7504: [$spacequalifierrest]);
7505: return $env{'form.'.$spacequalifierrest};
7506: } elsif ($realm eq 'request') {
7507: # ------------------------------------------------------------- request.browser
7508: if ($space eq 'browser') {
7509: if ($qualifier eq 'textremote') {
7510: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
7511: return 1;
7512: } else {
7513: return 0;
7514: }
7515: } else {
7516: return $env{'browser.'.$qualifier};
7517: }
7518: # ------------------------------------------------------------ request.filename
7519: } else {
7520: return $env{'request.'.$spacequalifierrest};
7521: }
7522: } elsif ($realm eq 'course') {
7523: # ---------------------------------------------------------- course.description
7524: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
7525: } elsif ($realm eq 'resource') {
7526:
7527: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
7528: if (!$symbparm) { $symbparm=&symbread(); }
7529: }
7530:
7531: if ($space eq 'title') {
7532: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
7533: return &gettitle($symbparm);
7534: }
7535:
7536: if ($space eq 'map') {
7537: my ($map) = &decode_symb($symbparm);
7538: return &symbread($map);
7539: }
7540: if ($space eq 'filename') {
7541: if ($symbparm) {
7542: return &clutter((&decode_symb($symbparm))[2]);
7543: }
7544: return &hreflocation('',$env{'request.filename'});
7545: }
7546:
7547: my ($section, $group, @groups);
7548: my ($courselevelm,$courselevel);
7549: if ($symbparm && defined($courseid) &&
7550: $courseid eq $env{'request.course.id'}) {
7551:
7552: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
7553:
7554: # ----------------------------------------------------- Cascading lookup scheme
7555: my $symbp=$symbparm;
7556: my $mapp=&deversion((&decode_symb($symbp))[0]);
7557:
7558: my $symbparm=$symbp.'.'.$spacequalifierrest;
7559: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
7560:
7561: if (($env{'user.name'} eq $uname) &&
7562: ($env{'user.domain'} eq $udom)) {
7563: $section=$env{'request.course.sec'};
7564: @groups = split(/:/,$env{'request.course.groups'});
7565: @groups=&sort_course_groups($courseid,@groups);
7566: } else {
7567: if (! defined($usection)) {
7568: $section=&getsection($udom,$uname,$courseid);
7569: } else {
7570: $section = $usection;
7571: }
7572: @groups = &get_users_groups($udom,$uname,$courseid);
7573: }
7574:
7575: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
7576: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
7577: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
7578:
7579: $courselevel=$courseid.'.'.$spacequalifierrest;
7580: my $courselevelr=$courseid.'.'.$symbparm;
7581: $courselevelm=$courseid.'.'.$mapparm;
7582:
7583: # ----------------------------------------------------------- first, check user
7584:
7585: my $userreply=&resdata($uname,$udom,'user',
7586: ([$courselevelr,'resource'],
7587: [$courselevelm,'map' ],
7588: [$courselevel, 'course' ]));
7589: if (defined($userreply)) { return &get_reply($userreply); }
7590:
7591: # ------------------------------------------------ second, check some of course
7592: my $coursereply;
7593: if (@groups > 0) {
7594: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
7595: $mapparm,$spacequalifierrest);
7596: if (defined($coursereply)) { return &get_reply($coursereply); }
7597: }
7598:
7599: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7600: $env{'course.'.$courseid.'.domain'},
7601: 'course',
7602: ([$seclevelr, 'resource'],
7603: [$seclevelm, 'map' ],
7604: [$seclevel, 'course' ],
7605: [$courselevelr,'resource']));
7606: if (defined($coursereply)) { return &get_reply($coursereply); }
7607:
7608: # ------------------------------------------------------ third, check map parms
7609: my %parmhash=();
7610: my $thisparm='';
7611: if (tie(%parmhash,'GDBM_File',
7612: $env{'request.course.fn'}.'_parms.db',
7613: &GDBM_READER(),0640)) {
7614: $thisparm=$parmhash{$symbparm};
7615: untie(%parmhash);
7616: }
7617: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
7618: }
7619: # ------------------------------------------ fourth, look in resource metadata
7620:
7621: $spacequalifierrest=~s/\./\_/;
7622: my $filename;
7623: if (!$symbparm) { $symbparm=&symbread(); }
7624: if ($symbparm) {
7625: $filename=(&decode_symb($symbparm))[2];
7626: } else {
7627: $filename=$env{'request.filename'};
7628: }
7629: my $metadata=&metadata($filename,$spacequalifierrest);
7630: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7631: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
7632: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
7633:
7634: # ---------------------------------------------- fourth, look in rest of course
7635: if ($symbparm && defined($courseid) &&
7636: $courseid eq $env{'request.course.id'}) {
7637: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
7638: $env{'course.'.$courseid.'.domain'},
7639: 'course',
7640: ([$courselevelm,'map' ],
7641: [$courselevel, 'course']));
7642: if (defined($coursereply)) { return &get_reply($coursereply); }
7643: }
7644: # ------------------------------------------------------------------ Cascade up
7645: unless ($space eq '0') {
7646: my @parts=split(/_/,$space);
7647: my $id=pop(@parts);
7648: my $part=join('_',@parts);
7649: if ($part eq '') { $part='0'; }
7650: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
7651: $symbparm,$udom,$uname,$section,1);
7652: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
7653: }
7654: if ($recurse) { return undef; }
7655: my $pack_def=&packages_tab_default($filename,$varname);
7656: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
7657: # ---------------------------------------------------- Any other user namespace
7658: } elsif ($realm eq 'environment') {
7659: # ----------------------------------------------------------------- environment
7660: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
7661: return $env{'environment.'.$spacequalifierrest};
7662: } else {
7663: if ($uname eq 'anonymous' && $udom eq '') {
7664: return '';
7665: }
7666: my %returnhash=&userenvironment($udom,$uname,
7667: $spacequalifierrest);
7668: return $returnhash{$spacequalifierrest};
7669: }
7670: } elsif ($realm eq 'system') {
7671: # ----------------------------------------------------------------- system.time
7672: if ($space eq 'time') {
7673: return time;
7674: }
7675: } elsif ($realm eq 'server') {
7676: # ----------------------------------------------------------------- system.time
7677: if ($space eq 'name') {
7678: return $ENV{'SERVER_NAME'};
7679: }
7680: }
7681: return '';
7682: }
7683:
7684: sub get_reply {
7685: my ($reply_value) = @_;
7686: if (ref($reply_value) eq 'ARRAY') {
7687: if (wantarray) {
7688: return @$reply_value;
7689: }
7690: return $reply_value->[0];
7691: } else {
7692: return $reply_value;
7693: }
7694: }
7695:
7696: sub check_group_parms {
7697: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
7698: my @groupitems = ();
7699: my $resultitem;
7700: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
7701: foreach my $group (@{$groups}) {
7702: foreach my $level (@levels) {
7703: my $item = $courseid.'.['.$group.'].'.$level->[0];
7704: push(@groupitems,[$item,$level->[1]]);
7705: }
7706: }
7707: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
7708: $env{'course.'.$courseid.'.domain'},
7709: 'course',@groupitems);
7710: return $coursereply;
7711: }
7712:
7713: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
7714: my ($courseid,@groups) = @_;
7715: @groups = sort(@groups);
7716: return @groups;
7717: }
7718:
7719: sub packages_tab_default {
7720: my ($uri,$varname)=@_;
7721: my (undef,$part,$name)=split(/\./,$varname);
7722:
7723: my (@extension,@specifics,$do_default);
7724: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7725: my ($pack_type,$pack_part)=split(/_/,$package,2);
7726: if ($pack_type eq 'default') {
7727: $do_default=1;
7728: } elsif ($pack_type eq 'extension') {
7729: push(@extension,[$package,$pack_type,$pack_part]);
7730: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7731: # only look at packages defaults for packages that this id is
7732: push(@specifics,[$package,$pack_type,$pack_part]);
7733: }
7734: }
7735: # first look for a package that matches the requested part id
7736: foreach my $package (@specifics) {
7737: my (undef,$pack_type,$pack_part)=@{$package};
7738: next if ($pack_part ne $part);
7739: if (defined($packagetab{"$pack_type&$name&default"})) {
7740: return $packagetab{"$pack_type&$name&default"};
7741: }
7742: }
7743: # look for any possible matching non extension_ package
7744: foreach my $package (@specifics) {
7745: my (undef,$pack_type,$pack_part)=@{$package};
7746: if (defined($packagetab{"$pack_type&$name&default"})) {
7747: return $packagetab{"$pack_type&$name&default"};
7748: }
7749: if ($pack_type eq 'part') { $pack_part='0'; }
7750: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7751: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7752: }
7753: }
7754: # look for any posible extension_ match
7755: foreach my $package (@extension) {
7756: my ($package,$pack_type)=@{$package};
7757: if (defined($packagetab{"$pack_type&$name&default"})) {
7758: return $packagetab{"$pack_type&$name&default"};
7759: }
7760: if (defined($packagetab{$package."&$name&default"})) {
7761: return $packagetab{$package."&$name&default"};
7762: }
7763: }
7764: # look for a global default setting
7765: if ($do_default && defined($packagetab{"default&$name&default"})) {
7766: return $packagetab{"default&$name&default"};
7767: }
7768: return undef;
7769: }
7770:
7771: sub add_prefix_and_part {
7772: my ($prefix,$part)=@_;
7773: my $keyroot;
7774: if (defined($prefix) && $prefix !~ /^__/) {
7775: # prefix that has a part already
7776: $keyroot=$prefix;
7777: } elsif (defined($prefix)) {
7778: # prefix that is missing a part
7779: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7780: } else {
7781: # no prefix at all
7782: if (defined($part)) { $keyroot='_'.$part; }
7783: }
7784: return $keyroot;
7785: }
7786:
7787: # ---------------------------------------------------------------- Get metadata
7788:
7789: my %metaentry;
7790: sub metadata {
7791: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7792: $uri=&declutter($uri);
7793: # if it is a non metadata possible uri return quickly
7794: if (($uri eq '') ||
7795: (($uri =~ m|^/*adm/|) &&
7796: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7797: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7798: return undef;
7799: }
7800: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7801: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7802: return undef;
7803: }
7804: my $filename=$uri;
7805: $uri=~s/\.meta$//;
7806: #
7807: # Is the metadata already cached?
7808: # Look at timestamp of caching
7809: # Everything is cached by the main uri, libraries are never directly cached
7810: #
7811: if (!defined($liburi)) {
7812: my ($result,$cached)=&is_cached_new('meta',$uri);
7813: if (defined($cached)) { return $result->{':'.$what}; }
7814: }
7815: {
7816: #
7817: # Is this a recursive call for a library?
7818: #
7819: # if (! exists($metacache{$uri})) {
7820: # $metacache{$uri}={};
7821: # }
7822: my $cachetime = 60*60;
7823: if ($liburi) {
7824: $liburi=&declutter($liburi);
7825: $filename=$liburi;
7826: } else {
7827: &devalidate_cache_new('meta',$uri);
7828: undef(%metaentry);
7829: }
7830: my %metathesekeys=();
7831: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7832: my $metastring;
7833: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7834: my $which = &hreflocation('','/'.($liburi || $uri));
7835: $metastring =
7836: &Apache::lonnet::ssi_body($which,
7837: ('grade_target' => 'meta'));
7838: $cachetime = 1; # only want this cached in the child not long term
7839: } elsif ($uri !~ m -^(editupload)/-) {
7840: my $file=&filelocation('',&clutter($filename));
7841: #push(@{$metaentry{$uri.'.file'}},$file);
7842: $metastring=&getfile($file);
7843: }
7844: my $parser=HTML::LCParser->new(\$metastring);
7845: my $token;
7846: undef %metathesekeys;
7847: while ($token=$parser->get_token) {
7848: if ($token->[0] eq 'S') {
7849: if (defined($token->[2]->{'package'})) {
7850: #
7851: # This is a package - get package info
7852: #
7853: my $package=$token->[2]->{'package'};
7854: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7855: if (defined($token->[2]->{'id'})) {
7856: $keyroot.='_'.$token->[2]->{'id'};
7857: }
7858: if ($metaentry{':packages'}) {
7859: $metaentry{':packages'}.=','.$package.$keyroot;
7860: } else {
7861: $metaentry{':packages'}=$package.$keyroot;
7862: }
7863: foreach my $pack_entry (keys(%packagetab)) {
7864: my $part=$keyroot;
7865: $part=~s/^\_//;
7866: if ($pack_entry=~/^\Q$package\E\&/ ||
7867: $pack_entry=~/^\Q$package\E_0\&/) {
7868: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7869: # ignore package.tab specified default values
7870: # here &package_tab_default() will fetch those
7871: if ($subp eq 'default') { next; }
7872: my $value=$packagetab{$pack_entry};
7873: my $unikey;
7874: if ($pack =~ /_0$/) {
7875: $unikey='parameter_0_'.$name;
7876: $part=0;
7877: } else {
7878: $unikey='parameter'.$keyroot.'_'.$name;
7879: }
7880: if ($subp eq 'display') {
7881: $value.=' [Part: '.$part.']';
7882: }
7883: $metaentry{':'.$unikey.'.part'}=$part;
7884: $metathesekeys{$unikey}=1;
7885: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7886: $metaentry{':'.$unikey.'.'.$subp}=$value;
7887: }
7888: if (defined($metaentry{':'.$unikey.'.default'})) {
7889: $metaentry{':'.$unikey}=
7890: $metaentry{':'.$unikey.'.default'};
7891: }
7892: }
7893: }
7894: } else {
7895: #
7896: # This is not a package - some other kind of start tag
7897: #
7898: my $entry=$token->[1];
7899: my $unikey;
7900: if ($entry eq 'import') {
7901: $unikey='';
7902: } else {
7903: $unikey=$entry;
7904: }
7905: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7906:
7907: if (defined($token->[2]->{'id'})) {
7908: $unikey.='_'.$token->[2]->{'id'};
7909: }
7910:
7911: if ($entry eq 'import') {
7912: #
7913: # Importing a library here
7914: #
7915: if ($depthcount<20) {
7916: my $location=$parser->get_text('/import');
7917: my $dir=$filename;
7918: $dir=~s|[^/]*$||;
7919: $location=&filelocation($dir,$location);
7920: my $metadata =
7921: &metadata($uri,'keys', $location,$unikey,
7922: $depthcount+1);
7923: foreach my $meta (split(',',$metadata)) {
7924: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7925: $metathesekeys{$meta}=1;
7926: }
7927: }
7928: } else {
7929:
7930: if (defined($token->[2]->{'name'})) {
7931: $unikey.='_'.$token->[2]->{'name'};
7932: }
7933: $metathesekeys{$unikey}=1;
7934: foreach my $param (@{$token->[3]}) {
7935: $metaentry{':'.$unikey.'.'.$param} =
7936: $token->[2]->{$param};
7937: }
7938: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7939: my $default=$metaentry{':'.$unikey.'.default'};
7940: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7941: # only ws inside the tag, and not in default, so use default
7942: # as value
7943: $metaentry{':'.$unikey}=$default;
7944: } elsif ( $internaltext =~ /\S/ ) {
7945: # something interesting inside the tag
7946: $metaentry{':'.$unikey}=$internaltext;
7947: } else {
7948: # no interesting values, don't set a default
7949: }
7950: # end of not-a-package not-a-library import
7951: }
7952: # end of not-a-package start tag
7953: }
7954: # the next is the end of "start tag"
7955: }
7956: }
7957: my ($extension) = ($uri =~ /\.(\w+)$/);
7958: $extension = lc($extension);
7959: if ($extension eq 'htm') { $extension='html'; }
7960:
7961: foreach my $key (keys(%packagetab)) {
7962: #no specific packages #how's our extension
7963: if ($key!~/^extension_\Q$extension\E&/) { next; }
7964: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7965: \%metathesekeys);
7966: }
7967:
7968: if (!exists($metaentry{':packages'})
7969: || $packagetab{"import_defaults&extension_$extension"}) {
7970: foreach my $key (keys(%packagetab)) {
7971: #no specific packages well let's get default then
7972: if ($key!~/^default&/) { next; }
7973: &metadata_create_package_def($uri,$key,'default',
7974: \%metathesekeys);
7975: }
7976: }
7977: # are there custom rights to evaluate
7978: if ($metaentry{':copyright'} eq 'custom') {
7979:
7980: #
7981: # Importing a rights file here
7982: #
7983: unless ($depthcount) {
7984: my $location=$metaentry{':customdistributionfile'};
7985: my $dir=$filename;
7986: $dir=~s|[^/]*$||;
7987: $location=&filelocation($dir,$location);
7988: my $rights_metadata =
7989: &metadata($uri,'keys',$location,'_rights',
7990: $depthcount+1);
7991: foreach my $rights (split(',',$rights_metadata)) {
7992: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7993: $metathesekeys{$rights}=1;
7994: }
7995: }
7996: }
7997: # uniqifiy package listing
7998: my %seen;
7999: my @uniq_packages =
8000: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8001: $metaentry{':packages'} = join(',',@uniq_packages);
8002:
8003: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8004: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8005: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8006: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8007: # this is the end of "was not already recently cached
8008: }
8009: return $metaentry{':'.$what};
8010: }
8011:
8012: sub metadata_create_package_def {
8013: my ($uri,$key,$package,$metathesekeys)=@_;
8014: my ($pack,$name,$subp)=split(/\&/,$key);
8015: if ($subp eq 'default') { next; }
8016:
8017: if (defined($metaentry{':packages'})) {
8018: $metaentry{':packages'}.=','.$package;
8019: } else {
8020: $metaentry{':packages'}=$package;
8021: }
8022: my $value=$packagetab{$key};
8023: my $unikey;
8024: $unikey='parameter_0_'.$name;
8025: $metaentry{':'.$unikey.'.part'}=0;
8026: $$metathesekeys{$unikey}=1;
8027: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8028: $metaentry{':'.$unikey.'.'.$subp}=$value;
8029: }
8030: if (defined($metaentry{':'.$unikey.'.default'})) {
8031: $metaentry{':'.$unikey}=
8032: $metaentry{':'.$unikey.'.default'};
8033: }
8034: }
8035:
8036: sub metadata_generate_part0 {
8037: my ($metadata,$metacache,$uri) = @_;
8038: my %allnames;
8039: foreach my $metakey (keys(%$metadata)) {
8040: if ($metakey=~/^parameter\_(.*)/) {
8041: my $part=$$metacache{':'.$metakey.'.part'};
8042: my $name=$$metacache{':'.$metakey.'.name'};
8043: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8044: $allnames{$name}=$part;
8045: }
8046: }
8047: }
8048: foreach my $name (keys(%allnames)) {
8049: $$metadata{"parameter_0_$name"}=1;
8050: my $key=":parameter_0_$name";
8051: $$metacache{"$key.part"}='0';
8052: $$metacache{"$key.name"}=$name;
8053: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8054: $allnames{$name}.'_'.$name.
8055: '.type'};
8056: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8057: '.display'};
8058: my $expr='[Part: '.$allnames{$name}.']';
8059: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8060: $$metacache{"$key.display"}=$olddis;
8061: }
8062: }
8063:
8064: # ------------------------------------------------------ Devalidate title cache
8065:
8066: sub devalidate_title_cache {
8067: my ($url)=@_;
8068: if (!$env{'request.course.id'}) { return; }
8069: my $symb=&symbread($url);
8070: if (!$symb) { return; }
8071: my $key=$env{'request.course.id'}."\0".$symb;
8072: &devalidate_cache_new('title',$key);
8073: }
8074:
8075: # ------------------------------------------------- Get the title of a course
8076:
8077: sub current_course_title {
8078: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8079: }
8080: # ------------------------------------------------- Get the title of a resource
8081:
8082: sub gettitle {
8083: my $urlsymb=shift;
8084: my $symb=&symbread($urlsymb);
8085: if ($symb) {
8086: my $key=$env{'request.course.id'}."\0".$symb;
8087: my ($result,$cached)=&is_cached_new('title',$key);
8088: if (defined($cached)) {
8089: return $result;
8090: }
8091: my ($map,$resid,$url)=&decode_symb($symb);
8092: my $title='';
8093: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8094: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8095: } else {
8096: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8097: &GDBM_READER(),0640)) {
8098: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8099: $title=$bighash{'title_'.$mapid.'.'.$resid};
8100: untie(%bighash);
8101: }
8102: }
8103: $title=~s/\&colon\;/\:/gs;
8104: if ($title) {
8105: return &do_cache_new('title',$key,$title,600);
8106: }
8107: $urlsymb=$url;
8108: }
8109: my $title=&metadata($urlsymb,'title');
8110: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8111: return $title;
8112: }
8113:
8114: sub get_slot {
8115: my ($which,$cnum,$cdom)=@_;
8116: if (!$cnum || !$cdom) {
8117: (undef,my $courseid)=&whichuser();
8118: $cdom=$env{'course.'.$courseid.'.domain'};
8119: $cnum=$env{'course.'.$courseid.'.num'};
8120: }
8121: my $key=join("\0",'slots',$cdom,$cnum,$which);
8122: my %slotinfo;
8123: if (exists($remembered{$key})) {
8124: $slotinfo{$which} = $remembered{$key};
8125: } else {
8126: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8127: &Apache::lonhomework::showhash(%slotinfo);
8128: my ($tmp)=keys(%slotinfo);
8129: if ($tmp=~/^error:/) { return (); }
8130: $remembered{$key} = $slotinfo{$which};
8131: }
8132: if (ref($slotinfo{$which}) eq 'HASH') {
8133: return %{$slotinfo{$which}};
8134: }
8135: return $slotinfo{$which};
8136: }
8137: # ------------------------------------------------- Update symbolic store links
8138:
8139: sub symblist {
8140: my ($mapname,%newhash)=@_;
8141: $mapname=&deversion(&declutter($mapname));
8142: my %hash;
8143: if (($env{'request.course.fn'}) && (%newhash)) {
8144: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8145: &GDBM_WRCREAT(),0640)) {
8146: foreach my $url (keys(%newhash)) {
8147: next if ($url eq 'last_known'
8148: && $env{'form.no_update_last_known'});
8149: $hash{declutter($url)}=&encode_symb($mapname,
8150: $newhash{$url}->[1],
8151: $newhash{$url}->[0]);
8152: }
8153: if (untie(%hash)) {
8154: return 'ok';
8155: }
8156: }
8157: }
8158: return 'error';
8159: }
8160:
8161: # --------------------------------------------------------------- Verify a symb
8162:
8163: sub symbverify {
8164: my ($symb,$thisurl)=@_;
8165: my $thisfn=$thisurl;
8166: $thisfn=&declutter($thisfn);
8167: # direct jump to resource in page or to a sequence - will construct own symbs
8168: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8169: # check URL part
8170: my ($map,$resid,$url)=&decode_symb($symb);
8171:
8172: unless ($url eq $thisfn) { return 0; }
8173:
8174: $symb=&symbclean($symb);
8175: $thisurl=&deversion($thisurl);
8176: $thisfn=&deversion($thisfn);
8177:
8178: my %bighash;
8179: my $okay=0;
8180:
8181: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8182: &GDBM_READER(),0640)) {
8183: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8184: unless ($ids) {
8185: $ids=$bighash{'ids_/'.$thisurl};
8186: }
8187: if ($ids) {
8188: # ------------------------------------------------------------------- Has ID(s)
8189: foreach my $id (split(/\,/,$ids)) {
8190: my ($mapid,$resid)=split(/\./,$id);
8191: if (
8192: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8193: eq $symb) {
8194: if (($env{'request.role.adv'}) ||
8195: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8196: $okay=1;
8197: }
8198: }
8199: }
8200: }
8201: untie(%bighash);
8202: }
8203: return $okay;
8204: }
8205:
8206: # --------------------------------------------------------------- Clean-up symb
8207:
8208: sub symbclean {
8209: my $symb=shift;
8210: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8211: # remove version from map
8212: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8213:
8214: # remove version from URL
8215: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8216:
8217: # remove wrapper
8218:
8219: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8220: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8221: return $symb;
8222: }
8223:
8224: # ---------------------------------------------- Split symb to find map and url
8225:
8226: sub encode_symb {
8227: my ($map,$resid,$url)=@_;
8228: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8229: }
8230:
8231: sub decode_symb {
8232: my $symb=shift;
8233: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8234: my ($map,$resid,$url)=split(/___/,$symb);
8235: return (&fixversion($map),$resid,&fixversion($url));
8236: }
8237:
8238: sub fixversion {
8239: my $fn=shift;
8240: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8241: my %bighash;
8242: my $uri=&clutter($fn);
8243: my $key=$env{'request.course.id'}.'_'.$uri;
8244: # is this cached?
8245: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8246: if (defined($cached)) { return $result; }
8247: # unfortunately not cached, or expired
8248: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8249: &GDBM_READER(),0640)) {
8250: if ($bighash{'version_'.$uri}) {
8251: my $version=$bighash{'version_'.$uri};
8252: unless (($version eq 'mostrecent') ||
8253: ($version==&getversion($uri))) {
8254: $uri=~s/\.(\w+)$/\.$version\.$1/;
8255: }
8256: }
8257: untie %bighash;
8258: }
8259: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8260: }
8261:
8262: sub deversion {
8263: my $url=shift;
8264: $url=~s/\.\d+\.(\w+)$/\.$1/;
8265: return $url;
8266: }
8267:
8268: # ------------------------------------------------------ Return symb list entry
8269:
8270: sub symbread {
8271: my ($thisfn,$donotrecurse)=@_;
8272: my $cache_str='request.symbread.cached.'.$thisfn;
8273: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8274: # no filename provided? try from environment
8275: unless ($thisfn) {
8276: if ($env{'request.symb'}) {
8277: return $env{$cache_str}=&symbclean($env{'request.symb'});
8278: }
8279: $thisfn=$env{'request.filename'};
8280: }
8281: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8282: # is that filename actually a symb? Verify, clean, and return
8283: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
8284: if (&symbverify($thisfn,$1)) {
8285: return $env{$cache_str}=&symbclean($thisfn);
8286: }
8287: }
8288: $thisfn=declutter($thisfn);
8289: my %hash;
8290: my %bighash;
8291: my $syval='';
8292: if (($env{'request.course.fn'}) && ($thisfn)) {
8293: my $targetfn = $thisfn;
8294: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
8295: $targetfn = 'adm/wrapper/'.$thisfn;
8296: }
8297: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
8298: $targetfn=$1;
8299: }
8300: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8301: &GDBM_READER(),0640)) {
8302: $syval=$hash{$targetfn};
8303: untie(%hash);
8304: }
8305: # ---------------------------------------------------------- There was an entry
8306: if ($syval) {
8307: #unless ($syval=~/\_\d+$/) {
8308: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
8309: #&appenv({'request.ambiguous' => $thisfn});
8310: #return $env{$cache_str}='';
8311: #}
8312: #$syval.=$1;
8313: #}
8314: } else {
8315: # ------------------------------------------------------- Was not in symb table
8316: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8317: &GDBM_READER(),0640)) {
8318: # ---------------------------------------------- Get ID(s) for current resource
8319: my $ids=$bighash{'ids_'.&clutter($thisfn)};
8320: unless ($ids) {
8321: $ids=$bighash{'ids_/'.$thisfn};
8322: }
8323: unless ($ids) {
8324: # alias?
8325: $ids=$bighash{'mapalias_'.$thisfn};
8326: }
8327: if ($ids) {
8328: # ------------------------------------------------------------------- Has ID(s)
8329: my @possibilities=split(/\,/,$ids);
8330: if ($#possibilities==0) {
8331: # ----------------------------------------------- There is only one possibility
8332: my ($mapid,$resid)=split(/\./,$ids);
8333: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8334: $resid,$thisfn);
8335: } elsif (!$donotrecurse) {
8336: # ------------------------------------------ There is more than one possibility
8337: my $realpossible=0;
8338: foreach my $id (@possibilities) {
8339: my $file=$bighash{'src_'.$id};
8340: if (&allowed('bre',$file)) {
8341: my ($mapid,$resid)=split(/\./,$id);
8342: if ($bighash{'map_type_'.$mapid} ne 'page') {
8343: $realpossible++;
8344: $syval=&encode_symb($bighash{'map_id_'.$mapid},
8345: $resid,$thisfn);
8346: }
8347: }
8348: }
8349: if ($realpossible!=1) { $syval=''; }
8350: } else {
8351: $syval='';
8352: }
8353: }
8354: untie(%bighash)
8355: }
8356: }
8357: if ($syval) {
8358: return $env{$cache_str}=$syval;
8359: }
8360: }
8361: &appenv({'request.ambiguous' => $thisfn});
8362: return $env{$cache_str}='';
8363: }
8364:
8365: # ---------------------------------------------------------- Return random seed
8366:
8367: sub numval {
8368: my $txt=shift;
8369: $txt=~tr/A-J/0-9/;
8370: $txt=~tr/a-j/0-9/;
8371: $txt=~tr/K-T/0-9/;
8372: $txt=~tr/k-t/0-9/;
8373: $txt=~tr/U-Z/0-5/;
8374: $txt=~tr/u-z/0-5/;
8375: $txt=~s/\D//g;
8376: if ($_64bit) { if ($txt > 2**32) { return -1; } }
8377: return int($txt);
8378: }
8379:
8380: sub numval2 {
8381: my $txt=shift;
8382: $txt=~tr/A-J/0-9/;
8383: $txt=~tr/a-j/0-9/;
8384: $txt=~tr/K-T/0-9/;
8385: $txt=~tr/k-t/0-9/;
8386: $txt=~tr/U-Z/0-5/;
8387: $txt=~tr/u-z/0-5/;
8388: $txt=~s/\D//g;
8389: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8390: my $total;
8391: foreach my $val (@txts) { $total+=$val; }
8392: if ($_64bit) { if ($total > 2**32) { return -1; } }
8393: return int($total);
8394: }
8395:
8396: sub numval3 {
8397: use integer;
8398: my $txt=shift;
8399: $txt=~tr/A-J/0-9/;
8400: $txt=~tr/a-j/0-9/;
8401: $txt=~tr/K-T/0-9/;
8402: $txt=~tr/k-t/0-9/;
8403: $txt=~tr/U-Z/0-5/;
8404: $txt=~tr/u-z/0-5/;
8405: $txt=~s/\D//g;
8406: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
8407: my $total;
8408: foreach my $val (@txts) { $total+=$val; }
8409: if ($_64bit) { $total=(($total<<32)>>32); }
8410: return $total;
8411: }
8412:
8413: sub digest {
8414: my ($data)=@_;
8415: my $digest=&Digest::MD5::md5($data);
8416: my ($a,$b,$c,$d)=unpack("iiii",$digest);
8417: my ($e,$f);
8418: {
8419: use integer;
8420: $e=($a+$b);
8421: $f=($c+$d);
8422: if ($_64bit) {
8423: $e=(($e<<32)>>32);
8424: $f=(($f<<32)>>32);
8425: }
8426: }
8427: if (wantarray) {
8428: return ($e,$f);
8429: } else {
8430: my $g;
8431: {
8432: use integer;
8433: $g=($e+$f);
8434: if ($_64bit) {
8435: $g=(($g<<32)>>32);
8436: }
8437: }
8438: return $g;
8439: }
8440: }
8441:
8442: sub latest_rnd_algorithm_id {
8443: return '64bit5';
8444: }
8445:
8446: sub get_rand_alg {
8447: my ($courseid)=@_;
8448: if (!$courseid) { $courseid=(&whichuser())[1]; }
8449: if ($courseid) {
8450: return $env{"course.$courseid.rndseed"};
8451: }
8452: return &latest_rnd_algorithm_id();
8453: }
8454:
8455: sub validCODE {
8456: my ($CODE)=@_;
8457: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
8458: return 0;
8459: }
8460:
8461: sub getCODE {
8462: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
8463: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
8464: defined($Apache::lonhomework::parsing_a_task) ) &&
8465: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
8466: return $Apache::lonhomework::history{'resource.CODE'};
8467: }
8468: return undef;
8469: }
8470:
8471: sub rndseed {
8472: my ($symb,$courseid,$domain,$username)=@_;
8473: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
8474: if (!defined($symb)) {
8475: unless ($symb=$wsymb) { return time; }
8476: }
8477: if (!$courseid) { $courseid=$wcourseid; }
8478: if (!$domain) { $domain=$wdomain; }
8479: if (!$username) { $username=$wusername }
8480: my $which=&get_rand_alg();
8481:
8482: if (defined(&getCODE())) {
8483: if ($which eq '64bit5') {
8484: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
8485: } elsif ($which eq '64bit4') {
8486: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
8487: } else {
8488: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
8489: }
8490: } elsif ($which eq '64bit5') {
8491: return &rndseed_64bit5($symb,$courseid,$domain,$username);
8492: } elsif ($which eq '64bit4') {
8493: return &rndseed_64bit4($symb,$courseid,$domain,$username);
8494: } elsif ($which eq '64bit3') {
8495: return &rndseed_64bit3($symb,$courseid,$domain,$username);
8496: } elsif ($which eq '64bit2') {
8497: return &rndseed_64bit2($symb,$courseid,$domain,$username);
8498: } elsif ($which eq '64bit') {
8499: return &rndseed_64bit($symb,$courseid,$domain,$username);
8500: }
8501: return &rndseed_32bit($symb,$courseid,$domain,$username);
8502: }
8503:
8504: sub rndseed_32bit {
8505: my ($symb,$courseid,$domain,$username)=@_;
8506: {
8507: use integer;
8508: my $symbchck=unpack("%32C*",$symb) << 27;
8509: my $symbseed=numval($symb) << 22;
8510: my $namechck=unpack("%32C*",$username) << 17;
8511: my $nameseed=numval($username) << 12;
8512: my $domainseed=unpack("%32C*",$domain) << 7;
8513: my $courseseed=unpack("%32C*",$courseid);
8514: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
8515: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8516: #&logthis("rndseed :$num:$symb");
8517: if ($_64bit) { $num=(($num<<32)>>32); }
8518: return $num;
8519: }
8520: }
8521:
8522: sub rndseed_64bit {
8523: my ($symb,$courseid,$domain,$username)=@_;
8524: {
8525: use integer;
8526: my $symbchck=unpack("%32S*",$symb) << 21;
8527: my $symbseed=numval($symb) << 10;
8528: my $namechck=unpack("%32S*",$username);
8529:
8530: my $nameseed=numval($username) << 21;
8531: my $domainseed=unpack("%32S*",$domain) << 10;
8532: my $courseseed=unpack("%32S*",$courseid);
8533:
8534: my $num1=$symbchck+$symbseed+$namechck;
8535: my $num2=$nameseed+$domainseed+$courseseed;
8536: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8537: #&logthis("rndseed :$num:$symb");
8538: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8539: return "$num1,$num2";
8540: }
8541: }
8542:
8543: sub rndseed_64bit2 {
8544: my ($symb,$courseid,$domain,$username)=@_;
8545: {
8546: use integer;
8547: # strings need to be an even # of cahracters long, it it is odd the
8548: # last characters gets thrown away
8549: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8550: my $symbseed=numval($symb) << 10;
8551: my $namechck=unpack("%32S*",$username.' ');
8552:
8553: my $nameseed=numval($username) << 21;
8554: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8555: my $courseseed=unpack("%32S*",$courseid.' ');
8556:
8557: my $num1=$symbchck+$symbseed+$namechck;
8558: my $num2=$nameseed+$domainseed+$courseseed;
8559: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8560: #&logthis("rndseed :$num:$symb");
8561: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8562: return "$num1,$num2";
8563: }
8564: }
8565:
8566: sub rndseed_64bit3 {
8567: my ($symb,$courseid,$domain,$username)=@_;
8568: {
8569: use integer;
8570: # strings need to be an even # of cahracters long, it it is odd the
8571: # last characters gets thrown away
8572: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8573: my $symbseed=numval2($symb) << 10;
8574: my $namechck=unpack("%32S*",$username.' ');
8575:
8576: my $nameseed=numval2($username) << 21;
8577: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8578: my $courseseed=unpack("%32S*",$courseid.' ');
8579:
8580: my $num1=$symbchck+$symbseed+$namechck;
8581: my $num2=$nameseed+$domainseed+$courseseed;
8582: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8583: #&logthis("rndseed :$num1:$num2:$_64bit");
8584: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8585:
8586: return "$num1:$num2";
8587: }
8588: }
8589:
8590: sub rndseed_64bit4 {
8591: my ($symb,$courseid,$domain,$username)=@_;
8592: {
8593: use integer;
8594: # strings need to be an even # of cahracters long, it it is odd the
8595: # last characters gets thrown away
8596: my $symbchck=unpack("%32S*",$symb.' ') << 21;
8597: my $symbseed=numval3($symb) << 10;
8598: my $namechck=unpack("%32S*",$username.' ');
8599:
8600: my $nameseed=numval3($username) << 21;
8601: my $domainseed=unpack("%32S*",$domain.' ') << 10;
8602: my $courseseed=unpack("%32S*",$courseid.' ');
8603:
8604: my $num1=$symbchck+$symbseed+$namechck;
8605: my $num2=$nameseed+$domainseed+$courseseed;
8606: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
8607: #&logthis("rndseed :$num1:$num2:$_64bit");
8608: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
8609:
8610: return "$num1:$num2";
8611: }
8612: }
8613:
8614: sub rndseed_64bit5 {
8615: my ($symb,$courseid,$domain,$username)=@_;
8616: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
8617: return "$num1:$num2";
8618: }
8619:
8620: sub rndseed_CODE_64bit {
8621: my ($symb,$courseid,$domain,$username)=@_;
8622: {
8623: use integer;
8624: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8625: my $symbseed=numval2($symb);
8626: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8627: my $CODEseed=numval(&getCODE());
8628: my $courseseed=unpack("%32S*",$courseid.' ');
8629: my $num1=$symbseed+$CODEchck;
8630: my $num2=$CODEseed+$courseseed+$symbchck;
8631: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8632: #&logthis("rndseed :$num1:$num2:$symb");
8633: if ($_64bit) { $num1=(($num1<<32)>>32); }
8634: if ($_64bit) { $num2=(($num2<<32)>>32); }
8635: return "$num1:$num2";
8636: }
8637: }
8638:
8639: sub rndseed_CODE_64bit4 {
8640: my ($symb,$courseid,$domain,$username)=@_;
8641: {
8642: use integer;
8643: my $symbchck=unpack("%32S*",$symb.' ') << 16;
8644: my $symbseed=numval3($symb);
8645: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
8646: my $CODEseed=numval3(&getCODE());
8647: my $courseseed=unpack("%32S*",$courseid.' ');
8648: my $num1=$symbseed+$CODEchck;
8649: my $num2=$CODEseed+$courseseed+$symbchck;
8650: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
8651: #&logthis("rndseed :$num1:$num2:$symb");
8652: if ($_64bit) { $num1=(($num1<<32)>>32); }
8653: if ($_64bit) { $num2=(($num2<<32)>>32); }
8654: return "$num1:$num2";
8655: }
8656: }
8657:
8658: sub rndseed_CODE_64bit5 {
8659: my ($symb,$courseid,$domain,$username)=@_;
8660: my $code = &getCODE();
8661: my ($num1,$num2)=&digest("$symb,$courseid,$code");
8662: return "$num1:$num2";
8663: }
8664:
8665: sub setup_random_from_rndseed {
8666: my ($rndseed)=@_;
8667: if ($rndseed =~/([,:])/) {
8668: my ($num1,$num2)=split(/[,:]/,$rndseed);
8669: &Math::Random::random_set_seed(abs($num1),abs($num2));
8670: } else {
8671: &Math::Random::random_set_seed_from_phrase($rndseed);
8672: }
8673: }
8674:
8675: sub latest_receipt_algorithm_id {
8676: return 'receipt3';
8677: }
8678:
8679: sub recunique {
8680: my $fucourseid=shift;
8681: my $unique;
8682: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
8683: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8684: $unique=$env{"course.$fucourseid.internal.encseed"};
8685: } else {
8686: $unique=$perlvar{'lonReceipt'};
8687: }
8688: return unpack("%32C*",$unique);
8689: }
8690:
8691: sub recprefix {
8692: my $fucourseid=shift;
8693: my $prefix;
8694: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
8695: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
8696: $prefix=$env{"course.$fucourseid.internal.encpref"};
8697: } else {
8698: $prefix=$perlvar{'lonHostID'};
8699: }
8700: return unpack("%32C*",$prefix);
8701: }
8702:
8703: sub ireceipt {
8704: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
8705:
8706: my $return =&recprefix($fucourseid).'-';
8707:
8708: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
8709: $env{'request.state'} eq 'construct') {
8710: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
8711: return $return;
8712: }
8713:
8714: my $cuname=unpack("%32C*",$funame);
8715: my $cudom=unpack("%32C*",$fudom);
8716: my $cucourseid=unpack("%32C*",$fucourseid);
8717: my $cusymb=unpack("%32C*",$fusymb);
8718: my $cunique=&recunique($fucourseid);
8719: my $cpart=unpack("%32S*",$part);
8720: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8721:
8722: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8723:
8724: $return.= ($cunique%$cuname+
8725: $cunique%$cudom+
8726: $cusymb%$cuname+
8727: $cusymb%$cudom+
8728: $cucourseid%$cuname+
8729: $cucourseid%$cudom+
8730: $cpart%$cuname+
8731: $cpart%$cudom);
8732: } else {
8733: $return.= ($cunique%$cuname+
8734: $cunique%$cudom+
8735: $cusymb%$cuname+
8736: $cusymb%$cudom+
8737: $cucourseid%$cuname+
8738: $cucourseid%$cudom);
8739: }
8740: return $return;
8741: }
8742:
8743: sub receipt {
8744: my ($part)=@_;
8745: my ($symb,$courseid,$domain,$name) = &whichuser();
8746: return &ireceipt($name,$domain,$courseid,$symb,$part);
8747: }
8748:
8749: sub whichuser {
8750: my ($passedsymb)=@_;
8751: my ($symb,$courseid,$domain,$name,$publicuser);
8752: if (defined($env{'form.grade_symb'})) {
8753: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8754: my $allowed=&allowed('vgr',$tmp_courseid);
8755: if (!$allowed &&
8756: exists($env{'request.course.sec'}) &&
8757: $env{'request.course.sec'} !~ /^\s*$/) {
8758: $allowed=&allowed('vgr',$tmp_courseid.
8759: '/'.$env{'request.course.sec'});
8760: }
8761: if ($allowed) {
8762: ($symb)=&get_env_multiple('form.grade_symb');
8763: $courseid=$tmp_courseid;
8764: ($domain)=&get_env_multiple('form.grade_domain');
8765: ($name)=&get_env_multiple('form.grade_username');
8766: return ($symb,$courseid,$domain,$name,$publicuser);
8767: }
8768: }
8769: if (!$passedsymb) {
8770: $symb=&symbread();
8771: } else {
8772: $symb=$passedsymb;
8773: }
8774: $courseid=$env{'request.course.id'};
8775: $domain=$env{'user.domain'};
8776: $name=$env{'user.name'};
8777: if ($name eq 'public' && $domain eq 'public') {
8778: if (!defined($env{'form.username'})) {
8779: $env{'form.username'}.=time.rand(10000000);
8780: }
8781: $name.=$env{'form.username'};
8782: }
8783: return ($symb,$courseid,$domain,$name,$publicuser);
8784:
8785: }
8786:
8787: # ------------------------------------------------------------ Serves up a file
8788: # returns either the contents of the file or
8789: # -1 if the file doesn't exist
8790: #
8791: # if the target is a file that was uploaded via DOCS,
8792: # a check will be made to see if a current copy exists on the local server,
8793: # if it does this will be served, otherwise a copy will be retrieved from
8794: # the home server for the course and stored in /home/httpd/html/userfiles on
8795: # the local server.
8796:
8797: sub getfile {
8798: my ($file) = @_;
8799: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8800: &repcopy($file);
8801: return &readfile($file);
8802: }
8803:
8804: sub repcopy_userfile {
8805: my ($file)=@_;
8806: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8807: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8808: my ($cdom,$cnum,$filename) =
8809: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8810: my $uri="/uploaded/$cdom/$cnum/$filename";
8811: if (-e "$file") {
8812: # we already have a local copy, check it out
8813: my @fileinfo = stat($file);
8814: my $rtncode;
8815: my $info;
8816: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8817: if ($lwpresp ne 'ok') {
8818: # there is no such file anymore, even though we had a local copy
8819: if ($rtncode eq '404') {
8820: unlink($file);
8821: }
8822: return -1;
8823: }
8824: if ($info < $fileinfo[9]) {
8825: # nice, the file we have is up-to-date, just say okay
8826: return 'ok';
8827: } else {
8828: # the file is outdated, get rid of it
8829: unlink($file);
8830: }
8831: }
8832: # one way or the other, at this point, we don't have the file
8833: # construct the correct path for the file
8834: my @parts = ($cdom,$cnum);
8835: if ($filename =~ m|^(.+)/[^/]+$|) {
8836: push @parts, split(/\//,$1);
8837: }
8838: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8839: foreach my $part (@parts) {
8840: $path .= '/'.$part;
8841: if (!-e $path) {
8842: mkdir($path,0770);
8843: }
8844: }
8845: # now the path exists for sure
8846: # get a user agent
8847: my $ua=new LWP::UserAgent;
8848: my $transferfile=$file.'.in.transfer';
8849: # FIXME: this should flock
8850: if (-e $transferfile) { return 'ok'; }
8851: my $request;
8852: $uri=~s/^\///;
8853: my $homeserver = &homeserver($cnum,$cdom);
8854: my $protocol = $protocol{$homeserver};
8855: $protocol = 'http' if ($protocol ne 'https');
8856: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
8857: my $response=$ua->request($request,$transferfile);
8858: # did it work?
8859: if ($response->is_error()) {
8860: unlink($transferfile);
8861: &logthis("Userfile repcopy failed for $uri");
8862: return -1;
8863: }
8864: # worked, rename the transfer file
8865: rename($transferfile,$file);
8866: return 'ok';
8867: }
8868:
8869: sub tokenwrapper {
8870: my $uri=shift;
8871: $uri=~s|^https?\://([^/]+)||;
8872: $uri=~s|^/||;
8873: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8874: my $token=$1;
8875: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8876: if ($udom && $uname && $file) {
8877: $file=~s|(\?\.*)*$||;
8878: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8879: my $homeserver = &homeserver($uname,$udom);
8880: my $protocol = $protocol{$homeserver};
8881: $protocol = 'http' if ($protocol ne 'https');
8882: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
8883: (($uri=~/\?/)?'&':'?').'token='.$token.
8884: '&tokenissued='.$perlvar{'lonHostID'};
8885: } else {
8886: return '/adm/notfound.html';
8887: }
8888: }
8889:
8890: # call with reqtype HEAD: get last modification time
8891: # call with reqtype GET: get the file contents
8892: # Do not call this with reqtype GET for large files! It loads everything into memory
8893: #
8894: sub getuploaded {
8895: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8896: $uri=~s/^\///;
8897: my $homeserver = &homeserver($cnum,$cdom);
8898: my $protocol = $protocol{$homeserver};
8899: $protocol = 'http' if ($protocol ne 'https');
8900: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
8901: my $ua=new LWP::UserAgent;
8902: my $request=new HTTP::Request($reqtype,$uri);
8903: my $response=$ua->request($request);
8904: $$rtncode = $response->code;
8905: if (! $response->is_success()) {
8906: return 'failed';
8907: }
8908: if ($reqtype eq 'HEAD') {
8909: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8910: } elsif ($reqtype eq 'GET') {
8911: $$info = $response->content;
8912: }
8913: return 'ok';
8914: }
8915:
8916: sub readfile {
8917: my $file = shift;
8918: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8919: my $fh;
8920: open($fh,"<$file");
8921: my $a='';
8922: while (my $line = <$fh>) { $a .= $line; }
8923: return $a;
8924: }
8925:
8926: sub filelocation {
8927: my ($dir,$file) = @_;
8928: my $location;
8929: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8930:
8931: if ($file =~ m-^/adm/-) {
8932: $file=~s-^/adm/wrapper/-/-;
8933: $file=~s-^/adm/coursedocs/showdoc/-/-;
8934: }
8935:
8936: if ($file=~m:^/~:) { # is a contruction space reference
8937: $location = $file;
8938: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8939: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8940: # is a correct contruction space reference
8941: $location = $file;
8942: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8943: $location = $file;
8944: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8945: my ($udom,$uname,$filename)=
8946: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8947: my $home=&homeserver($uname,$udom);
8948: my $is_me=0;
8949: my @ids=¤t_machine_ids();
8950: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8951: if ($is_me) {
8952: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8953: } else {
8954: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8955: $udom.'/'.$uname.'/'.$filename;
8956: }
8957: } elsif ($file =~ m-^/adm/-) {
8958: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8959: } else {
8960: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8961: $file=~s:^/res/:/:;
8962: if ( !( $file =~ m:^/:) ) {
8963: $location = $dir. '/'.$file;
8964: } else {
8965: $location = '/home/httpd/html/res'.$file;
8966: }
8967: }
8968: $location=~s://+:/:g; # remove duplicate /
8969: while ($location=~m{/\.\./}) {
8970: if ($location =~ m{/[^/]+/\.\./}) {
8971: $location=~ s{/[^/]+/\.\./}{/}g;
8972: } else {
8973: $location=~ s{/\.\./}{/}g;
8974: }
8975: } #remove dir/..
8976: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8977: return $location;
8978: }
8979:
8980: sub hreflocation {
8981: my ($dir,$file)=@_;
8982: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
8983: $file=filelocation($dir,$file);
8984: } elsif ($file=~m-^/adm/-) {
8985: $file=~s-^/adm/wrapper/-/-;
8986: $file=~s-^/adm/coursedocs/showdoc/-/-;
8987: }
8988: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8989: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8990: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8991: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8992: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8993: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8994: -/uploaded/$1/$2/-x;
8995: }
8996: if ($file=~ m{^/userfiles/}) {
8997: $file =~ s{^/userfiles/}{/uploaded/};
8998: }
8999: return $file;
9000: }
9001:
9002: sub current_machine_domains {
9003: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9004: }
9005:
9006: sub machine_domains {
9007: my ($hostname) = @_;
9008: my @domains;
9009: my %hostname = &all_hostnames();
9010: while( my($id, $name) = each(%hostname)) {
9011: # &logthis("-$id-$name-$hostname-");
9012: if ($hostname eq $name) {
9013: push(@domains,&host_domain($id));
9014: }
9015: }
9016: return @domains;
9017: }
9018:
9019: sub current_machine_ids {
9020: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9021: }
9022:
9023: sub machine_ids {
9024: my ($hostname) = @_;
9025: $hostname ||= &hostname($perlvar{'lonHostID'});
9026: my @ids;
9027: my %name_to_host = &all_names();
9028: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9029: return @{ $name_to_host{$hostname} };
9030: }
9031: return;
9032: }
9033:
9034: sub additional_machine_domains {
9035: my @domains;
9036: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9037: while( my $line = <$fh>) {
9038: $line =~ s/\s//g;
9039: push(@domains,$line);
9040: }
9041: return @domains;
9042: }
9043:
9044: sub default_login_domain {
9045: my $domain = $perlvar{'lonDefDomain'};
9046: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9047: foreach my $posdom (¤t_machine_domains(),
9048: &additional_machine_domains()) {
9049: if (lc($posdom) eq lc($testdomain)) {
9050: $domain=$posdom;
9051: last;
9052: }
9053: }
9054: return $domain;
9055: }
9056:
9057: # ------------------------------------------------------------- Declutters URLs
9058:
9059: sub declutter {
9060: my $thisfn=shift;
9061: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9062: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9063: $thisfn=~s/^\///;
9064: $thisfn=~s|^adm/wrapper/||;
9065: $thisfn=~s|^adm/coursedocs/showdoc/||;
9066: $thisfn=~s/^res\///;
9067: $thisfn=~s/\?.+$//;
9068: return $thisfn;
9069: }
9070:
9071: # ------------------------------------------------------------- Clutter up URLs
9072:
9073: sub clutter {
9074: my $thisfn='/'.&declutter(shift);
9075: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9076: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9077: $thisfn='/res'.$thisfn;
9078: }
9079: if ($thisfn !~m|/adm|) {
9080: if ($thisfn =~ m|/ext/|) {
9081: $thisfn='/adm/wrapper'.$thisfn;
9082: } else {
9083: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9084: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9085: if ($embstyle eq 'ssi'
9086: || ($embstyle eq 'hdn')
9087: || ($embstyle eq 'rat')
9088: || ($embstyle eq 'prv')
9089: || ($embstyle eq 'ign')) {
9090: #do nothing with these
9091: } elsif (($embstyle eq 'img')
9092: || ($embstyle eq 'emb')
9093: || ($embstyle eq 'wrp')) {
9094: $thisfn='/adm/wrapper'.$thisfn;
9095: } elsif ($embstyle eq 'unk'
9096: && $thisfn!~/\.(sequence|page)$/) {
9097: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9098: } else {
9099: # &logthis("Got a blank emb style");
9100: }
9101: }
9102: }
9103: return $thisfn;
9104: }
9105:
9106: sub clutter_with_no_wrapper {
9107: my $uri = &clutter(shift);
9108: if ($uri =~ m-^/adm/-) {
9109: $uri =~ s-^/adm/wrapper/-/-;
9110: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9111: }
9112: return $uri;
9113: }
9114:
9115: sub freeze_escape {
9116: my ($value)=@_;
9117: if (ref($value)) {
9118: $value=&nfreeze($value);
9119: return '__FROZEN__'.&escape($value);
9120: }
9121: return &escape($value);
9122: }
9123:
9124:
9125: sub thaw_unescape {
9126: my ($value)=@_;
9127: if ($value =~ /^__FROZEN__/) {
9128: substr($value,0,10,undef);
9129: $value=&unescape($value);
9130: return &thaw($value);
9131: }
9132: return &unescape($value);
9133: }
9134:
9135: sub correct_line_ends {
9136: my ($result)=@_;
9137: $$result =~s/\r\n/\n/mg;
9138: $$result =~s/\r/\n/mg;
9139: }
9140: # ================================================================ Main Program
9141:
9142: sub goodbye {
9143: &logthis("Starting Shut down");
9144: #not converted to using infrastruture and probably shouldn't be
9145: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9146: #converted
9147: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9148: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9149: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9150: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9151: #1.1 only
9152: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9153: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9154: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9155: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9156: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9157: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9158: &logthis(sprintf("%-20s is %s",'hits',$hits));
9159: &flushcourselogs();
9160: &logthis("Shutting down");
9161: }
9162:
9163: sub get_dns {
9164: my ($url,$func,$ignore_cache) = @_;
9165: if (!$ignore_cache) {
9166: my ($content,$cached)=
9167: &Apache::lonnet::is_cached_new('dns',$url);
9168: if ($cached) {
9169: &$func($content);
9170: return;
9171: }
9172: }
9173:
9174: my %alldns;
9175: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9176: foreach my $dns (<$config>) {
9177: next if ($dns !~ /^\^(\S*)/x);
9178: my $line = $1;
9179: my ($host,$protocol) = split(/:/,$line);
9180: if ($protocol ne 'https') {
9181: $protocol = 'http';
9182: }
9183: $alldns{$host} = $protocol;
9184: }
9185: while (%alldns) {
9186: my ($dns) = keys(%alldns);
9187: my $ua=new LWP::UserAgent;
9188: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9189: my $response=$ua->request($request);
9190: delete($alldns{$dns});
9191: next if ($response->is_error());
9192: my @content = split("\n",$response->content);
9193: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9194: &$func(\@content);
9195: return;
9196: }
9197: close($config);
9198: my $which = (split('/',$url))[3];
9199: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9200: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9201: my @content = <$config>;
9202: &$func(\@content);
9203: return;
9204: }
9205: # ------------------------------------------------------------ Read domain file
9206: {
9207: my $loaded;
9208: my %domain;
9209:
9210: sub parse_domain_tab {
9211: my ($lines) = @_;
9212: foreach my $line (@$lines) {
9213: next if ($line =~ /^(\#|\s*$ )/x);
9214:
9215: chomp($line);
9216: my ($name,@elements) = split(/:/,$line,9);
9217: my %this_domain;
9218: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9219: 'lang_def', 'city', 'longi', 'lati',
9220: 'primary') {
9221: $this_domain{$field} = shift(@elements);
9222: }
9223: $domain{$name} = \%this_domain;
9224: }
9225: }
9226:
9227: sub reset_domain_info {
9228: undef($loaded);
9229: undef(%domain);
9230: }
9231:
9232: sub load_domain_tab {
9233: my ($ignore_cache) = @_;
9234: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9235: my $fh;
9236: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9237: my @lines = <$fh>;
9238: &parse_domain_tab(\@lines);
9239: }
9240: close($fh);
9241: $loaded = 1;
9242: }
9243:
9244: sub domain {
9245: &load_domain_tab() if (!$loaded);
9246:
9247: my ($name,$what) = @_;
9248: return if ( !exists($domain{$name}) );
9249:
9250: if (!$what) {
9251: return $domain{$name}{'description'};
9252: }
9253: return $domain{$name}{$what};
9254: }
9255:
9256: sub domain_info {
9257: &load_domain_tab() if (!$loaded);
9258: return %domain;
9259: }
9260:
9261: }
9262:
9263:
9264: # ------------------------------------------------------------- Read hosts file
9265: {
9266: my %hostname;
9267: my %hostdom;
9268: my %libserv;
9269: my $loaded;
9270: my %name_to_host;
9271:
9272: sub parse_hosts_tab {
9273: my ($file) = @_;
9274: foreach my $configline (@$file) {
9275: next if ($configline =~ /^(\#|\s*$ )/x);
9276: next if ($configline =~ /^\^/);
9277: chomp($configline);
9278: my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
9279: $name=~s/\s//g;
9280: if ($id && $domain && $role && $name) {
9281: $hostname{$id}=$name;
9282: push(@{$name_to_host{$name}}, $id);
9283: $hostdom{$id}=$domain;
9284: if ($role eq 'library') { $libserv{$id}=$name; }
9285: if (defined($protocol)) {
9286: if ($protocol eq 'https') {
9287: $protocol{$id} = $protocol;
9288: } else {
9289: $protocol{$id} = 'http';
9290: }
9291: } else {
9292: $protocol{$id} = 'http';
9293: }
9294: }
9295: }
9296: }
9297:
9298: sub reset_hosts_info {
9299: &purge_remembered();
9300: &reset_domain_info();
9301: &reset_hosts_ip_info();
9302: undef(%name_to_host);
9303: undef(%hostname);
9304: undef(%hostdom);
9305: undef(%libserv);
9306: undef($loaded);
9307: }
9308:
9309: sub load_hosts_tab {
9310: my ($ignore_cache) = @_;
9311: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
9312: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9313: my @config = <$config>;
9314: &parse_hosts_tab(\@config);
9315: close($config);
9316: $loaded=1;
9317: }
9318:
9319: sub hostname {
9320: &load_hosts_tab() if (!$loaded);
9321:
9322: my ($lonid) = @_;
9323: return $hostname{$lonid};
9324: }
9325:
9326: sub all_hostnames {
9327: &load_hosts_tab() if (!$loaded);
9328:
9329: return %hostname;
9330: }
9331:
9332: sub all_names {
9333: &load_hosts_tab() if (!$loaded);
9334:
9335: return %name_to_host;
9336: }
9337:
9338: sub all_host_domain {
9339: &load_hosts_tab() if (!$loaded);
9340: return %hostdom;
9341: }
9342:
9343: sub is_library {
9344: &load_hosts_tab() if (!$loaded);
9345:
9346: return exists($libserv{$_[0]});
9347: }
9348:
9349: sub all_library {
9350: &load_hosts_tab() if (!$loaded);
9351:
9352: return %libserv;
9353: }
9354:
9355: sub get_servers {
9356: &load_hosts_tab() if (!$loaded);
9357:
9358: my ($domain,$type) = @_;
9359: my %possible_hosts = ($type eq 'library') ? %libserv
9360: : %hostname;
9361: my %result;
9362: if (ref($domain) eq 'ARRAY') {
9363: while ( my ($host,$hostname) = each(%possible_hosts)) {
9364: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
9365: $result{$host} = $hostname;
9366: }
9367: }
9368: } else {
9369: while ( my ($host,$hostname) = each(%possible_hosts)) {
9370: if ($hostdom{$host} eq $domain) {
9371: $result{$host} = $hostname;
9372: }
9373: }
9374: }
9375: return %result;
9376: }
9377:
9378: sub host_domain {
9379: &load_hosts_tab() if (!$loaded);
9380:
9381: my ($lonid) = @_;
9382: return $hostdom{$lonid};
9383: }
9384:
9385: sub all_domains {
9386: &load_hosts_tab() if (!$loaded);
9387:
9388: my %seen;
9389: my @uniq = grep(!$seen{$_}++, values(%hostdom));
9390: return @uniq;
9391: }
9392: }
9393:
9394: {
9395: my %iphost;
9396: my %name_to_ip;
9397: my %lonid_to_ip;
9398:
9399: sub get_hosts_from_ip {
9400: my ($ip) = @_;
9401: my %iphosts = &get_iphost();
9402: if (ref($iphosts{$ip})) {
9403: return @{$iphosts{$ip}};
9404: }
9405: return;
9406: }
9407:
9408: sub reset_hosts_ip_info {
9409: undef(%iphost);
9410: undef(%name_to_ip);
9411: undef(%lonid_to_ip);
9412: }
9413:
9414: sub get_host_ip {
9415: my ($lonid) = @_;
9416: if (exists($lonid_to_ip{$lonid})) {
9417: return $lonid_to_ip{$lonid};
9418: }
9419: my $name=&hostname($lonid);
9420: my $ip = gethostbyname($name);
9421: return if (!$ip || length($ip) ne 4);
9422: $ip=inet_ntoa($ip);
9423: $name_to_ip{$name} = $ip;
9424: $lonid_to_ip{$lonid} = $ip;
9425: return $ip;
9426: }
9427:
9428: sub get_iphost {
9429: my ($ignore_cache) = @_;
9430:
9431: if (!$ignore_cache) {
9432: if (%iphost) {
9433: return %iphost;
9434: }
9435: my ($ip_info,$cached)=
9436: &Apache::lonnet::is_cached_new('iphost','iphost');
9437: if ($cached) {
9438: %iphost = %{$ip_info->[0]};
9439: %name_to_ip = %{$ip_info->[1]};
9440: %lonid_to_ip = %{$ip_info->[2]};
9441: return %iphost;
9442: }
9443: }
9444:
9445: # get yesterday's info for fallback
9446: my %old_name_to_ip;
9447: my ($ip_info,$cached)=
9448: &Apache::lonnet::is_cached_new('iphost','iphost');
9449: if ($cached) {
9450: %old_name_to_ip = %{$ip_info->[1]};
9451: }
9452:
9453: my %name_to_host = &all_names();
9454: foreach my $name (keys(%name_to_host)) {
9455: my $ip;
9456: if (!exists($name_to_ip{$name})) {
9457: $ip = gethostbyname($name);
9458: if (!$ip || length($ip) ne 4) {
9459: if (defined($old_name_to_ip{$name})) {
9460: $ip = $old_name_to_ip{$name};
9461: &logthis("Can't find $name defaulting to old $ip");
9462: } else {
9463: &logthis("Name $name no IP found");
9464: next;
9465: }
9466: } else {
9467: $ip=inet_ntoa($ip);
9468: }
9469: $name_to_ip{$name} = $ip;
9470: } else {
9471: $ip = $name_to_ip{$name};
9472: }
9473: foreach my $id (@{ $name_to_host{$name} }) {
9474: $lonid_to_ip{$id} = $ip;
9475: }
9476: push(@{$iphost{$ip}},@{$name_to_host{$name}});
9477: }
9478: &Apache::lonnet::do_cache_new('iphost','iphost',
9479: [\%iphost,\%name_to_ip,\%lonid_to_ip],
9480: 48*60*60);
9481:
9482: return %iphost;
9483: }
9484:
9485: #
9486: # Given a DNS returns the loncapa host name for that DNS
9487: #
9488: sub host_from_dns {
9489: my ($dns) = @_;
9490: my @hosts;
9491: my $ip;
9492:
9493: if (exists($name_to_ip{$dns})) {
9494: $ip = $name_to_ip{$dns};
9495: }
9496: if (!$ip) {
9497: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
9498: if (length($ip) == 4) {
9499: $ip = &IO::Socket::inet_ntoa($ip);
9500: }
9501: }
9502: if ($ip) {
9503: @hosts = get_hosts_from_ip($ip);
9504: return $hosts[0];
9505: }
9506: return undef;
9507: }
9508:
9509: }
9510:
9511: BEGIN {
9512:
9513: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
9514: unless ($readit) {
9515: {
9516: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
9517: %perlvar = (%perlvar,%{$configvars});
9518: }
9519:
9520:
9521: # ------------------------------------------------------ Read spare server file
9522: {
9523: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
9524:
9525: while (my $configline=<$config>) {
9526: chomp($configline);
9527: if ($configline) {
9528: my ($host,$type) = split(':',$configline,2);
9529: if (!defined($type) || $type eq '') { $type = 'default' };
9530: push(@{ $spareid{$type} }, $host);
9531: }
9532: }
9533: close($config);
9534: }
9535: # ------------------------------------------------------------ Read permissions
9536: {
9537: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
9538:
9539: while (my $configline=<$config>) {
9540: chomp($configline);
9541: if ($configline) {
9542: my ($role,$perm)=split(/ /,$configline);
9543: if ($perm ne '') { $pr{$role}=$perm; }
9544: }
9545: }
9546: close($config);
9547: }
9548:
9549: # -------------------------------------------- Read plain texts for permissions
9550: {
9551: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
9552:
9553: while (my $configline=<$config>) {
9554: chomp($configline);
9555: if ($configline) {
9556: my ($short,@plain)=split(/:/,$configline);
9557: %{$prp{$short}} = ();
9558: if (@plain > 0) {
9559: $prp{$short}{'std'} = $plain[0];
9560: for (my $i=1; $i<@plain; $i++) {
9561: $prp{$short}{'alt'.$i} = $plain[$i];
9562: }
9563: }
9564: }
9565: }
9566: close($config);
9567: }
9568:
9569: # ---------------------------------------------------------- Read package table
9570: {
9571: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
9572:
9573: while (my $configline=<$config>) {
9574: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
9575: chomp($configline);
9576: my ($short,$plain)=split(/:/,$configline);
9577: my ($pack,$name)=split(/\&/,$short);
9578: if ($plain ne '') {
9579: $packagetab{$pack.'&'.$name.'&name'}=$name;
9580: $packagetab{$short}=$plain;
9581: }
9582: }
9583: close($config);
9584: }
9585:
9586: # ------------- set up temporary directory
9587: {
9588: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
9589:
9590: }
9591:
9592: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
9593: 'compress_threshold'=> 20_000,
9594: });
9595:
9596: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
9597: $dumpcount=0;
9598: $locknum=0;
9599:
9600: &logtouch();
9601: &logthis('<font color="yellow">INFO: Read configuration</font>');
9602: $readit=1;
9603: {
9604: use integer;
9605: my $test=(2**32)+1;
9606: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
9607: &logthis(" Detected 64bit platform ($_64bit)");
9608: }
9609: }
9610: }
9611:
9612: 1;
9613: __END__
9614:
9615: =pod
9616:
9617: =head1 NAME
9618:
9619: Apache::lonnet - Subroutines to ask questions about things in the network.
9620:
9621: =head1 SYNOPSIS
9622:
9623: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
9624:
9625: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
9626:
9627: Common parameters:
9628:
9629: =over 4
9630:
9631: =item *
9632:
9633: $uname : an internal username (if $cname expecting a course Id specifically)
9634:
9635: =item *
9636:
9637: $udom : a domain (if $cdom expecting a course's domain specifically)
9638:
9639: =item *
9640:
9641: $symb : a resource instance identifier
9642:
9643: =item *
9644:
9645: $namespace : the name of a .db file that contains the data needed or
9646: being set.
9647:
9648: =back
9649:
9650: =head1 OVERVIEW
9651:
9652: lonnet provides subroutines which interact with the
9653: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
9654: about classes, users, and resources.
9655:
9656: For many of these objects you can also use this to store data about
9657: them or modify them in various ways.
9658:
9659: =head2 Symbs
9660:
9661: To identify a specific instance of a resource, LON-CAPA uses symbols
9662: or "symbs"X<symb>. These identifiers are built from the URL of the
9663: map, the resource number of the resource in the map, and the URL of
9664: the resource itself. The latter is somewhat redundant, but might help
9665: if maps change.
9666:
9667: An example is
9668:
9669: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
9670:
9671: The respective map entry is
9672:
9673: <resource id="19" src="/res/msu/korte/tests/part12.problem"
9674: title="Problem 2">
9675: </resource>
9676:
9677: Symbs are used by the random number generator, as well as to store and
9678: restore data specific to a certain instance of for example a problem.
9679:
9680: =head2 Storing And Retrieving Data
9681:
9682: X<store()>X<cstore()>X<restore()>Three of the most important functions
9683: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
9684: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
9685: is is the non-critical message twin of cstore. These functions are for
9686: handlers to store a perl hash to a user's permanent data space in an
9687: easy manner, and to retrieve it again on another call. It is expected
9688: that a handler would use this once at the beginning to retrieve data,
9689: and then again once at the end to send only the new data back.
9690:
9691: The data is stored in the user's data directory on the user's
9692: homeserver under the ID of the course.
9693:
9694: The hash that is returned by restore will have all of the previous
9695: value for all of the elements of the hash.
9696:
9697: Example:
9698:
9699: #creating a hash
9700: my %hash;
9701: $hash{'foo'}='bar';
9702:
9703: #storing it
9704: &Apache::lonnet::cstore(\%hash);
9705:
9706: #changing a value
9707: $hash{'foo'}='notbar';
9708:
9709: #adding a new value
9710: $hash{'bar'}='foo';
9711: &Apache::lonnet::cstore(\%hash);
9712:
9713: #retrieving the hash
9714: my %history=&Apache::lonnet::restore();
9715:
9716: #print the hash
9717: foreach my $key (sort(keys(%history))) {
9718: print("\%history{$key} = $history{$key}");
9719: }
9720:
9721: Will print out:
9722:
9723: %history{1:foo} = bar
9724: %history{1:keys} = foo:timestamp
9725: %history{1:timestamp} = 990455579
9726: %history{2:bar} = foo
9727: %history{2:foo} = notbar
9728: %history{2:keys} = foo:bar:timestamp
9729: %history{2:timestamp} = 990455580
9730: %history{bar} = foo
9731: %history{foo} = notbar
9732: %history{timestamp} = 990455580
9733: %history{version} = 2
9734:
9735: Note that the special hash entries C<keys>, C<version> and
9736: C<timestamp> were added to the hash. C<version> will be equal to the
9737: total number of versions of the data that have been stored. The
9738: C<timestamp> attribute will be the UNIX time the hash was
9739: stored. C<keys> is available in every historical section to list which
9740: keys were added or changed at a specific historical revision of a
9741: hash.
9742:
9743: B<Warning>: do not store the hash that restore returns directly. This
9744: will cause a mess since it will restore the historical keys as if the
9745: were new keys. I.E. 1:foo will become 1:1:foo etc.
9746:
9747: Calling convention:
9748:
9749: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
9750: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
9751:
9752: For more detailed information, see lonnet specific documentation.
9753:
9754: =head1 RETURN MESSAGES
9755:
9756: =over 4
9757:
9758: =item * B<con_lost>: unable to contact remote host
9759:
9760: =item * B<con_delayed>: unable to contact remote host, message will be delivered
9761: when the connection is brought back up
9762:
9763: =item * B<con_failed>: unable to contact remote host and unable to save message
9764: for later delivery
9765:
9766: =item * B<error:>: an error a occurred, a description of the error follows the :
9767:
9768: =item * B<no_such_host>: unable to fund a host associated with the user/domain
9769: that was requested
9770:
9771: =back
9772:
9773: =head1 PUBLIC SUBROUTINES
9774:
9775: =head2 Session Environment Functions
9776:
9777: =over 4
9778:
9779: =item *
9780: X<appenv()>
9781: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9782: the user envirnoment file, and will be restored for each access this
9783: user makes during this session, also modifies the %env for the current
9784: process. Optional rolesarrayref - if defined contains a reference to an array
9785: of roles which are exempt from the restriction on modifying user.role entries
9786: in the user's environment.db and in %env.
9787:
9788: =item *
9789: X<delenv()>
9790: B<delenv($delthis,$regexp)>: removes all items from the session
9791: environment file that begin with $delthis. If the
9792: optional second arg - $regexp - is true, $delthis is treated as a
9793: regular expression, otherwise \Q$delthis\E is used.
9794: The values are also deleted from the current processes %env.
9795:
9796: =item * get_env_multiple($name)
9797:
9798: gets $name from the %env hash, it seemlessly handles the cases where multiple
9799: values may be defined and end up as an array ref.
9800:
9801: returns an array of values
9802:
9803: =back
9804:
9805: =head2 User Information
9806:
9807: =over 4
9808:
9809: =item *
9810: X<queryauthenticate()>
9811: B<queryauthenticate($uname,$udom)>: try to determine user's current
9812: authentication scheme
9813:
9814: =item *
9815: X<authenticate()>
9816: B<authenticate($uname,$upass,$udom)>: try to
9817: authenticate user from domain's lib servers (first use the current
9818: one). C<$upass> should be the users password.
9819:
9820: =item *
9821: X<homeserver()>
9822: B<homeserver($uname,$udom)>: find the server which has
9823: the user's directory and files (there must be only one), this caches
9824: the answer, and also caches if there is a borken connection.
9825:
9826: =item *
9827: X<idget()>
9828: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9829: (IDs are a unique resource in a domain, there must be only 1 ID per
9830: username, and only 1 username per ID in a specific domain) (returns
9831: hash: id=>name,id=>name)
9832:
9833: =item *
9834: X<idrget()>
9835: B<idrget($udom,@unames)>: find the IDs behind a list of
9836: usernames (returns hash: name=>id,name=>id)
9837:
9838: =item *
9839: X<idput()>
9840: B<idput($udom,%ids)>: store away a list of names and associated IDs
9841:
9842: =item *
9843: X<rolesinit()>
9844: B<rolesinit($udom,$username,$authhost)>: get user privileges
9845:
9846: =item *
9847: X<getsection()>
9848: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9849: course $cname, return section name/number or '' for "not in course"
9850: and '-1' for "no section"
9851:
9852: =item *
9853: X<userenvironment()>
9854: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9855: passed in @what from the requested user's environment, returns a hash
9856:
9857: =item *
9858: X<userlog_query()>
9859: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9860: activity.log file. %filters defines filters applied when parsing the
9861: log file. These can be start or end timestamps, or the type of action
9862: - log to look for Login or Logout events, check for Checkin or
9863: Checkout, role for role selection. The response is in the form
9864: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9865: escaped strings of the action recorded in the activity.log file.
9866:
9867: =back
9868:
9869: =head2 User Roles
9870:
9871: =over 4
9872:
9873: =item *
9874:
9875: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9876: F: full access
9877: U,I,K: authentication modes (cxx only)
9878: '': forbidden
9879: 1: user needs to choose course
9880: 2: browse allowed
9881: A: passphrase authentication needed
9882:
9883: =item *
9884:
9885: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9886: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9887: and course level
9888:
9889: =item *
9890:
9891: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
9892: (rolesplain.tab); plain text explanation of a user role term.
9893: $type is Course (default) or Community.
9894: If $forcedefault evaluates to true, text returned will be default
9895: text for $type. Otherwise, if this is a course, the text returned
9896: will be a custom name for the role (if defined in the course's
9897: environment). If no custom name is defined the default is returned.
9898:
9899: =item *
9900:
9901: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9902: All arguments are optional. Returns a hash of a roles, either for
9903: co-author/assistant author roles for a user's Construction Space
9904: (default), or if $context is 'userroles', roles for the user himself,
9905: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9906: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9907: For each key, value is set to colon-separated start and end times for
9908: the role. If no username and domain are specified, will default to
9909: current user/domain. Types, roles, and roledoms are references to arrays
9910: of role statuses (active, future or previous), roles
9911: (e.g., cc,in, st etc.) and domains of the roles which can be used
9912: to restrict the list of roles reported. If no array ref is
9913: provided for types, will default to return only active roles.
9914:
9915: =back
9916:
9917: =head2 User Modification
9918:
9919: =over 4
9920:
9921: =item *
9922:
9923: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9924: user for the level given by URL. Optional start and end dates (leave empty
9925: string or zero for "no date")
9926:
9927: =item *
9928:
9929: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9930: change a users, password, possible return values are: ok,
9931: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9932: refused
9933:
9934: =item *
9935:
9936: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9937:
9938: =item *
9939:
9940: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
9941: $forceid,$desiredhome,$email,$inststatus) :
9942: modify user
9943:
9944: =item *
9945:
9946: modifystudent
9947:
9948: modify a student's enrollment and identification information.
9949: The course id is resolved based on the current users environment.
9950: This means the envoking user must be a course coordinator or otherwise
9951: associated with a course.
9952:
9953: This call is essentially a wrapper for lonnet::modifyuser and
9954: lonnet::modify_student_enrollment
9955:
9956: Inputs:
9957:
9958: =over 4
9959:
9960: =item B<$udom> Student's loncapa domain
9961:
9962: =item B<$uname> Student's loncapa login name
9963:
9964: =item B<$uid> Student/Employee ID
9965:
9966: =item B<$umode> Student's authentication mode
9967:
9968: =item B<$upass> Student's password
9969:
9970: =item B<$first> Student's first name
9971:
9972: =item B<$middle> Student's middle name
9973:
9974: =item B<$last> Student's last name
9975:
9976: =item B<$gene> Student's generation
9977:
9978: =item B<$usec> Student's section in course
9979:
9980: =item B<$end> Unix time of the roles expiration
9981:
9982: =item B<$start> Unix time of the roles start date
9983:
9984: =item B<$forceid> If defined, allow $uid to be changed
9985:
9986: =item B<$desiredhome> server to use as home server for student
9987:
9988: =item B<$email> Student's permanent e-mail address
9989:
9990: =item B<$type> Type of enrollment (auto or manual)
9991:
9992: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
9993:
9994: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
9995:
9996: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
9997:
9998: =item B<$context> role change context (shown in User Management Logs display in a course)
9999:
10000: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10001:
10002: =back
10003:
10004: =item *
10005:
10006: modify_student_enrollment
10007:
10008: Change a students enrollment status in a class. The environment variable
10009: 'role.request.course' must be defined for this function to proceed.
10010:
10011: Inputs:
10012:
10013: =over 4
10014:
10015: =item $udom, students domain
10016:
10017: =item $uname, students name
10018:
10019: =item $uid, students user id
10020:
10021: =item $first, students first name
10022:
10023: =item $middle
10024:
10025: =item $last
10026:
10027: =item $gene
10028:
10029: =item $usec
10030:
10031: =item $end
10032:
10033: =item $start
10034:
10035: =item $type
10036:
10037: =item $locktype
10038:
10039: =item $cid
10040:
10041: =item $selfenroll
10042:
10043: =item $context
10044:
10045: =back
10046:
10047:
10048: =item *
10049:
10050: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10051: custom role; give a custom role to a user for the level given by URL. Specify
10052: name and domain of role author, and role name
10053:
10054: =item *
10055:
10056: revokerole($udom,$uname,$url,$role) : revoke a role for url
10057:
10058: =item *
10059:
10060: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10061:
10062: =back
10063:
10064: =head2 Course Infomation
10065:
10066: =over 4
10067:
10068: =item *
10069:
10070: coursedescription($courseid) : returns a hash of information about the
10071: specified course id, including all environment settings for the
10072: course, the description of the course will be in the hash under the
10073: key 'description'
10074:
10075: =item *
10076:
10077: resdata($name,$domain,$type,@which) : request for current parameter
10078: setting for a specific $type, where $type is either 'course' or 'user',
10079: @what should be a list of parameters to ask about. This routine caches
10080: answers for 5 minutes.
10081:
10082: =item *
10083:
10084: get_courseresdata($courseid, $domain) : dump the entire course resource
10085: data base, returning a hash that is keyed by the resource name and has
10086: values that are the resource value. I believe that the timestamps and
10087: versions are also returned.
10088:
10089:
10090: =back
10091:
10092: =head2 Course Modification
10093:
10094: =over 4
10095:
10096: =item *
10097:
10098: writecoursepref($courseid,%prefs) : write preferences (environment
10099: database) for a course
10100:
10101: =item *
10102:
10103: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
10104:
10105: =item *
10106:
10107: generate_coursenum($udom) : get a unique (unused) course number in domain $udom
10108:
10109: =back
10110:
10111: =head2 Resource Subroutines
10112:
10113: =over 4
10114:
10115: =item *
10116:
10117: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
10118:
10119: =item *
10120:
10121: repcopy($filename) : subscribes to the requested file, and attempts to
10122: replicate from the owning library server, Might return
10123: 'unavailable', 'not_found', 'forbidden', 'ok', or
10124: 'bad_request', also attempts to grab the metadata for the
10125: resource. Expects the local filesystem pathname
10126: (/home/httpd/html/res/....)
10127:
10128: =back
10129:
10130: =head2 Resource Information
10131:
10132: =over 4
10133:
10134: =item *
10135:
10136: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
10137: a vairety of different possible values, $varname should be a request
10138: string, and the other parameters can be used to specify who and what
10139: one is asking about.
10140:
10141: Possible values for $varname are environment.lastname (or other item
10142: from the envirnment hash), user.name (or someother aspect about the
10143: user), resource.0.maxtries (or some other part and parameter of a
10144: resource)
10145:
10146: =item *
10147:
10148: directcondval($number) : get current value of a condition; reads from a state
10149: string
10150:
10151: =item *
10152:
10153: condval($condidx) : value of condition index based on state
10154:
10155: =item *
10156:
10157: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
10158: resource's metadata, $what should be either a specific key, or either
10159: 'keys' (to get a list of possible keys) or 'packages' to get a list of
10160: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
10161:
10162: this function automatically caches all requests
10163:
10164: =item *
10165:
10166: metadata_query($query,$custom,$customshow) : make a metadata query against the
10167: network of library servers; returns file handle of where SQL and regex results
10168: will be stored for query
10169:
10170: =item *
10171:
10172: symbread($filename) : return symbolic list entry (filename argument optional);
10173: returns the data handle
10174:
10175: =item *
10176:
10177: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
10178: a possible symb for the URL in $thisfn, and if is an encryypted
10179: resource that the user accessed using /enc/ returns a 1 on success, 0
10180: on failure, user must be in a course, as it assumes the existance of
10181: the course initial hash, and uses $env('request.course.id'}
10182:
10183:
10184: =item *
10185:
10186: symbclean($symb) : removes versions numbers from a symb, returns the
10187: cleaned symb
10188:
10189: =item *
10190:
10191: is_on_map($uri) : checks if the $uri is somewhere on the current
10192: course map, user must be in a course for it to work.
10193:
10194: =item *
10195:
10196: numval($salt) : return random seed value (addend for rndseed)
10197:
10198: =item *
10199:
10200: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
10201: a random seed, all arguments are optional, if they aren't sent it uses the
10202: environment to derive them. Note: if symb isn't sent and it can't get one
10203: from &symbread it will use the current time as its return value
10204:
10205: =item *
10206:
10207: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
10208: unfakeable, receipt
10209:
10210: =item *
10211:
10212: receipt() : API to ireceipt working off of env values; given out to users
10213:
10214: =item *
10215:
10216: countacc($url) : count the number of accesses to a given URL
10217:
10218: =item *
10219:
10220: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
10221:
10222: =item *
10223:
10224: checkin($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 $tcrsid)
10225:
10226: =item *
10227:
10228: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
10229:
10230: =item *
10231:
10232: devalidate($symb) : devalidate temporary spreadsheet calculations,
10233: forcing spreadsheet to reevaluate the resource scores next time.
10234:
10235: =back
10236:
10237: =head2 Storing/Retreiving Data
10238:
10239: =over 4
10240:
10241: =item *
10242:
10243: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
10244: for this url; hashref needs to be given and should be a \%hashname; the
10245: remaining args aren't required and if they aren't passed or are '' they will
10246: be derived from the env
10247:
10248: =item *
10249:
10250: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
10251: uses critical subroutine
10252:
10253: =item *
10254:
10255: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
10256: all args are optional
10257:
10258: =item *
10259:
10260: dumpstore($namespace,$udom,$uname,$regexp,$range) :
10261: dumps the complete (or key matching regexp) namespace into a hash
10262: ($udom, $uname, $regexp, $range are optional) for a namespace that is
10263: normally &store()ed into
10264:
10265: $range should be either an integer '100' (give me the first 100
10266: matching records)
10267: or be two integers sperated by a - with no spaces
10268: '30-50' (give me the 30th through the 50th matching
10269: records)
10270:
10271:
10272: =item *
10273:
10274: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
10275: replaces a &store() version of data with a replacement set of data
10276: for a particular resource in a namespace passed in the $storehash hash
10277: reference
10278:
10279: =item *
10280:
10281: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
10282: works very similar to store/cstore, but all data is stored in a
10283: temporary location and can be reset using tmpreset, $storehash should
10284: be a hash reference, returns nothing on success
10285:
10286: =item *
10287:
10288: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
10289: similar to restore, but all data is stored in a temporary location and
10290: can be reset using tmpreset. Returns a hash of values on success,
10291: error string otherwise.
10292:
10293: =item *
10294:
10295: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
10296: deltes all keys for $symb form the temporary storage hash.
10297:
10298: =item *
10299:
10300: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10301: reference filled in from namesp ($udom and $uname are optional)
10302:
10303: =item *
10304:
10305: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
10306: namesp ($udom and $uname are optional)
10307:
10308: =item *
10309:
10310: dump($namespace,$udom,$uname,$regexp,$range) :
10311: dumps the complete (or key matching regexp) namespace into a hash
10312: ($udom, $uname, $regexp, $range are optional)
10313:
10314: $range should be either an integer '100' (give me the first 100
10315: matching records)
10316: or be two integers sperated by a - with no spaces
10317: '30-50' (give me the 30th through the 50th matching
10318: records)
10319: =item *
10320:
10321: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
10322: $store can be a scalar, an array reference, or if the amount to be
10323: incremented is > 1, a hash reference.
10324:
10325: ($udom and $uname are optional)
10326:
10327: =item *
10328:
10329: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
10330: ($udom and $uname are optional)
10331:
10332: =item *
10333:
10334: cput($namespace,$storehash,$udom,$uname) : critical put
10335: ($udom and $uname are optional)
10336:
10337: =item *
10338:
10339: newput($namespace,$storehash,$udom,$uname) :
10340:
10341: Attempts to store the items in the $storehash, but only if they don't
10342: currently exist, if this succeeds you can be certain that you have
10343: successfully created a new key value pair in the $namespace db.
10344:
10345:
10346: Args:
10347: $namespace: name of database to store values to
10348: $storehash: hashref to store to the db
10349: $udom: (optional) domain of user containing the db
10350: $uname: (optional) name of user caontaining the db
10351:
10352: Returns:
10353: 'ok' -> succeeded in storing all keys of $storehash
10354: 'key_exists: <key>' -> failed to anything out of $storehash, as at
10355: least <key> already existed in the db (other
10356: requested keys may also already exist)
10357: 'error: <msg>' -> unable to tie the DB or other error occurred
10358: 'con_lost' -> unable to contact request server
10359: 'refused' -> action was not allowed by remote machine
10360:
10361:
10362: =item *
10363:
10364: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
10365: reference filled in from namesp (encrypts the return communication)
10366: ($udom and $uname are optional)
10367:
10368: =item *
10369:
10370: log($udom,$name,$home,$message) : write to permanent log for user; use
10371: critical subroutine
10372:
10373: =item *
10374:
10375: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
10376: array reference filled in from namespace found in domain level on either
10377: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
10378:
10379: =item *
10380:
10381: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
10382: domain level either on specified domain server ($uhome) or primary domain
10383: server ($udom and $uhome are optional)
10384:
10385: =item *
10386:
10387: get_domain_defaults($target_domain) : returns hash with defaults for
10388: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
10389: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
10390: or localauth), initial password or a kerberos realm, language (e.g., en-us).
10391: Values are retrieved from cache (if current), or from domain's configuration.db
10392: (if available), or lastly from values in lonTabs/dns_domain,tab,
10393: or lonTabs/domain.tab.
10394:
10395: %domdefaults = &get_auth_defaults($target_domain);
10396:
10397: =back
10398:
10399: =head2 Network Status Functions
10400:
10401: =over 4
10402:
10403: =item *
10404:
10405: dirlist($uri) : return directory list based on URI
10406:
10407: =item *
10408:
10409: spareserver() : find server with least workload from spare.tab
10410:
10411:
10412: =item *
10413:
10414: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
10415: if there is no corresponding loncapa host.
10416:
10417: =back
10418:
10419:
10420: =head2 Apache Request
10421:
10422: =over 4
10423:
10424: =item *
10425:
10426: ssi($url,%hash) : server side include, does a complete request cycle on url to
10427: localhost, posts hash
10428:
10429: =back
10430:
10431: =head2 Data to String to Data
10432:
10433: =over 4
10434:
10435: =item *
10436:
10437: hash2str(%hash) : convert a hash into a string complete with escaping and '='
10438: and '&' separators, supports elements that are arrayrefs and hashrefs
10439:
10440: =item *
10441:
10442: hashref2str($hashref) : convert a hashref into a string complete with
10443: escaping and '=' and '&' separators, supports elements that are
10444: arrayrefs and hashrefs
10445:
10446: =item *
10447:
10448: arrayref2str($arrayref) : convert an arrayref into a string complete
10449: with escaping and '&' separators, supports elements that are arrayrefs
10450: and hashrefs
10451:
10452: =item *
10453:
10454: str2hash($string) : convert string to hash using unescaping and
10455: splitting on '=' and '&', supports elements that are arrayrefs and
10456: hashrefs
10457:
10458: =item *
10459:
10460: str2array($string) : convert string to hash using unescaping and
10461: splitting on '&', supports elements that are arrayrefs and hashrefs
10462:
10463: =back
10464:
10465: =head2 Logging Routines
10466:
10467: =over 4
10468:
10469: These routines allow one to make log messages in the lonnet.log and
10470: lonnet.perm logfiles.
10471:
10472: =item *
10473:
10474: logtouch() : make sure the logfile, lonnet.log, exists
10475:
10476: =item *
10477:
10478: logthis() : append message to the normal lonnet.log file, it gets
10479: preiodically rolled over and deleted.
10480:
10481: =item *
10482:
10483: logperm() : append a permanent message to lonnet.perm.log, this log
10484: file never gets deleted by any automated portion of the system, only
10485: messages of critical importance should go in here.
10486:
10487: =back
10488:
10489: =head2 General File Helper Routines
10490:
10491: =over 4
10492:
10493: =item *
10494:
10495: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
10496: (a) files in /uploaded
10497: (i) If a local copy of the file exists -
10498: compares modification date of local copy with last-modified date for
10499: definitive version stored on home server for course. If local copy is
10500: stale, requests a new version from the home server and stores it.
10501: If the original has been removed from the home server, then local copy
10502: is unlinked.
10503: (ii) If local copy does not exist -
10504: requests the file from the home server and stores it.
10505:
10506: If $caller is 'uploadrep':
10507: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
10508: for request for files originally uploaded via DOCS.
10509: - returns 'ok' if fresh local copy now available, -1 otherwise.
10510:
10511: Otherwise:
10512: This indicates a call from the content generation phase of the request.
10513: - returns the entire contents of the file or -1.
10514:
10515: (b) files in /res
10516: - returns the entire contents of a file or -1;
10517: it properly subscribes to and replicates the file if neccessary.
10518:
10519:
10520: =item *
10521:
10522: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
10523: reference
10524:
10525: returns either a stat() list of data about the file or an empty list
10526: if the file doesn't exist or couldn't find out about it (connection
10527: problems or user unknown)
10528:
10529: =item *
10530:
10531: filelocation($dir,$file) : returns file system location of a file
10532: based on URI; meant to be "fairly clean" absolute reference, $dir is a
10533: directory that relative $file lookups are to looked in ($dir of /a/dir
10534: and a file of ../bob will become /a/bob)
10535:
10536: =item *
10537:
10538: hreflocation($dir,$file) : returns file system location or a URL; same as
10539: filelocation except for hrefs
10540:
10541: =item *
10542:
10543: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
10544:
10545: =back
10546:
10547: =head2 Usererfile file routines (/uploaded*)
10548:
10549: =over 4
10550:
10551: =item *
10552:
10553: userfileupload(): main rotine for putting a file in a user or course's
10554: filespace, arguments are,
10555:
10556: formname - required - this is the name of the element in $env where the
10557: filename, and the contents of the file to create/modifed exist
10558: the filename is in $env{'form.'.$formname.'.filename'} and the
10559: contents of the file is located in $env{'form.'.$formname}
10560: coursedoc - if true, store the file in the course of the active role
10561: of the current user
10562: subdir - required - subdirectory to put the file in under ../userfiles/
10563: if undefined, it will be placed in "unknown"
10564:
10565: (This routine calls clean_filename() to remove any dangerous
10566: characters from the filename, and then calls finuserfileupload() to
10567: complete the transaction)
10568:
10569: returns either the url of the uploaded file (/uploaded/....) if successful
10570: and /adm/notfound.html if unsuccessful
10571:
10572: =item *
10573:
10574: clean_filename(): routine for cleaing a filename up for storage in
10575: userfile space, argument is:
10576:
10577: filename - proposed filename
10578:
10579: returns: the new clean filename
10580:
10581: =item *
10582:
10583: finishuserfileupload(): routine that creaes and sends the file to
10584: userspace, probably shouldn't be called directly
10585:
10586: docuname: username or courseid of destination for the file
10587: docudom: domain of user/course of destination for the file
10588: formname: same as for userfileupload()
10589: fname: filename (inculding subdirectories) for the file
10590:
10591: returns either the url of the uploaded file (/uploaded/....) if successful
10592: and /adm/notfound.html if unsuccessful
10593:
10594: =item *
10595:
10596: renameuserfile(): renames an existing userfile to a new name
10597:
10598: Args:
10599: docuname: username or courseid of destination for the file
10600: docudom: domain of user/course of destination for the file
10601: old: current file name (including any subdirs under userfiles)
10602: new: desired file name (including any subdirs under userfiles)
10603:
10604: =item *
10605:
10606: mkdiruserfile(): creates a directory is a userfiles dir
10607:
10608: Args:
10609: docuname: username or courseid of destination for the file
10610: docudom: domain of user/course of destination for the file
10611: dir: dir to create (including any subdirs under userfiles)
10612:
10613: =item *
10614:
10615: removeuserfile(): removes a file that exists in userfiles
10616:
10617: Args:
10618: docuname: username or courseid of destination for the file
10619: docudom: domain of user/course of destination for the file
10620: fname: filname to delete (including any subdirs under userfiles)
10621:
10622: =item *
10623:
10624: removeuploadedurl(): convience function for removeuserfile()
10625:
10626: Args:
10627: url: a full /uploaded/... url to delete
10628:
10629: =item *
10630:
10631: get_portfile_permissions():
10632: Args:
10633: domain: domain of user or course contain the portfolio files
10634: user: name of user or num of course contain the portfolio files
10635: Returns:
10636: hashref of a dump of the proper file_permissions.db
10637:
10638:
10639: =item *
10640:
10641: get_access_controls():
10642:
10643: Args:
10644: current_permissions: the hash ref returned from get_portfile_permissions()
10645: group: (optional) the group you want the files associated with
10646: file: (optional) the file you want access info on
10647:
10648: Returns:
10649: a hash (keys are file names) of hashes containing
10650: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
10651: values are XML containing access control settings (see below)
10652:
10653: Internal notes:
10654:
10655: access controls are stored in file_permissions.db as key=value pairs.
10656: key -> path to file/file_name\0uniqueID:scope_end_start
10657: where scope -> public,guest,course,group,domains or users.
10658: end -> UNIX time for end of access (0 -> no end date)
10659: start -> UNIX time for start of access
10660:
10661: value -> XML description of access control
10662: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
10663: <start></start>
10664: <end></end>
10665:
10666: <password></password> for scope type = guest
10667:
10668: <domain></domain> for scope type = course or group
10669: <number></number>
10670: <roles id="">
10671: <role></role>
10672: <access></access>
10673: <section></section>
10674: <group></group>
10675: </roles>
10676:
10677: <dom></dom> for scope type = domains
10678:
10679: <users> for scope type = users
10680: <user>
10681: <uname></uname>
10682: <udom></udom>
10683: </user>
10684: </users>
10685: </scope>
10686:
10687: Access data is also aggregated for each file in an additional key=value pair:
10688: key -> path to file/file_name\0accesscontrol
10689: value -> reference to hash
10690: hash contains key = value pairs
10691: where key = uniqueID:scope_end_start
10692: value = UNIX time record was last updated
10693:
10694: Used to improve speed of look-ups of access controls for each file.
10695:
10696: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
10697:
10698: modify_access_controls():
10699:
10700: Modifies access controls for a portfolio file
10701: Args
10702: 1. file name
10703: 2. reference to hash of required changes,
10704: 3. domain
10705: 4. username
10706: where domain,username are the domain of the portfolio owner
10707: (either a user or a course)
10708:
10709: Returns:
10710: 1. result of additions or updates ('ok' or 'error', with error message).
10711: 2. result of deletions ('ok' or 'error', with error message).
10712: 3. reference to hash of any new or updated access controls.
10713: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
10714: key = integer (inbound ID)
10715: value = uniqueID
10716:
10717: =back
10718:
10719: =head2 HTTP Helper Routines
10720:
10721: =over 4
10722:
10723: =item *
10724:
10725: escape() : unpack non-word characters into CGI-compatible hex codes
10726:
10727: =item *
10728:
10729: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
10730:
10731: =back
10732:
10733: =head1 PRIVATE SUBROUTINES
10734:
10735: =head2 Underlying communication routines (Shouldn't call)
10736:
10737: =over 4
10738:
10739: =item *
10740:
10741: subreply() : tries to pass a message to lonc, returns con_lost if incapable
10742:
10743: =item *
10744:
10745: reply() : uses subreply to send a message to remote machine, logs all failures
10746:
10747: =item *
10748:
10749: critical() : passes a critical message to another server; if cannot
10750: get through then place message in connection buffer directory and
10751: returns con_delayed, if incapable of saving message, returns
10752: con_failed
10753:
10754: =item *
10755:
10756: reconlonc() : tries to reconnect lonc client processes.
10757:
10758: =back
10759:
10760: =head2 Resource Access Logging
10761:
10762: =over 4
10763:
10764: =item *
10765:
10766: flushcourselogs() : flush (save) buffer logs and access logs
10767:
10768: =item *
10769:
10770: courselog($what) : save message for course in hash
10771:
10772: =item *
10773:
10774: courseacclog($what) : save message for course using &courselog(). Perform
10775: special processing for specific resource types (problems, exams, quizzes, etc).
10776:
10777: =item *
10778:
10779: goodbye() : flush course logs and log shutting down; it is called in srm.conf
10780: as a PerlChildExitHandler
10781:
10782: =back
10783:
10784: =head2 Other
10785:
10786: =over 4
10787:
10788: =item *
10789:
10790: symblist($mapname,%newhash) : update symbolic storage links
10791:
10792: =back
10793:
10794: =cut
10795:
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