File:
[LON-CAPA] /
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lonnet /
perl /
lonnet.pm
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Thu Jan 5 18:44:41 2017 UTC (7 years, 6 months ago) by
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- Ad hoc roles for helpdesk personnel
- &get_all_adhocroles() provides information about all ad hoc roles defined
for use by domain helpdesk personnel.
- &get_my_adhocroles() provides information about just those ad hoc roles
which are available in a specific course for the current user.
- all custom ad hoc roles for helpdesk personnel are unavailable in "official"
courses in which user is a registered student (automated enrollment in use).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1333 2017/01/05 18:44:41 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:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( sleep gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_servercerts_info {
233: my ($lonhost,$context) = @_;
234: my ($rep,$uselocal);
235: if (grep { $_ eq $lonhost } ¤t_machine_ids()) {
236: $uselocal = 1;
237: }
238: if (($context ne 'cgi') && ($uselocal)) {
239: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
240: if ($distro eq '') {
241: $uselocal = 0;
242: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
243: if ($1 < 6) {
244: $uselocal = 0;
245: }
246: }
247: }
248: if ($uselocal) {
249: $rep = LONCAPA::Lond::server_certs(\%perlvar);
250: } else {
251: $rep=&reply('servercerts',$lonhost);
252: }
253: my ($result,%returnhash);
254: if (defined($lonhost)) {
255: if (!defined(&hostname($lonhost))) {
256: return;
257: }
258: }
259: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
260: ($rep eq 'unknown_cmd')) {
261: $result = $rep;
262: } else {
263: $result = 'ok';
264: my @pairs=split(/\&/,$rep);
265: foreach my $item (@pairs) {
266: my ($key,$value)=split(/=/,$item,2);
267: my $what = &unescape($key);
268: $returnhash{$what}=&thaw_unescape($value);
269: }
270: }
271: return ($result,\%returnhash);
272: }
273:
274: sub get_server_loncaparev {
275: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
276: if (defined($lonhost)) {
277: if (!defined(&hostname($lonhost))) {
278: undef($lonhost);
279: }
280: }
281: if (!defined($lonhost)) {
282: if (defined(&domain($dom,'primary'))) {
283: $lonhost=&domain($dom,'primary');
284: if ($lonhost eq 'no_host') {
285: undef($lonhost);
286: }
287: }
288: }
289: if (defined($lonhost)) {
290: my $cachetime = 12*3600;
291: if (!$ignore_cache) {
292: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
293: if (defined($cached)) {
294: return $loncaparev;
295: }
296: }
297: my ($answer,$loncaparev);
298: my @ids=¤t_machine_ids();
299: if (grep(/^\Q$lonhost\E$/,@ids)) {
300: $answer = $perlvar{'lonVersion'};
301: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
302: $loncaparev = $1;
303: }
304: } else {
305: $answer = &reply('serverloncaparev',$lonhost);
306: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
307: if ($caller eq 'loncron') {
308: my $ua=new LWP::UserAgent;
309: $ua->timeout(4);
310: my $protocol = $protocol{$lonhost};
311: $protocol = 'http' if ($protocol ne 'https');
312: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
313: my $request=new HTTP::Request('GET',$url);
314: my $response=$ua->request($request);
315: unless ($response->is_error()) {
316: my $content = $response->content;
317: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
318: $loncaparev = $1;
319: }
320: }
321: } else {
322: $loncaparev = $loncaparevs{$lonhost};
323: }
324: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
325: $loncaparev = $1;
326: }
327: }
328: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
329: }
330: }
331:
332: sub get_server_homeID {
333: my ($hostname,$ignore_cache,$caller) = @_;
334: unless ($ignore_cache) {
335: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
336: if (defined($cached)) {
337: return $serverhomeID;
338: }
339: }
340: my $cachetime = 12*3600;
341: my $serverhomeID;
342: if ($caller eq 'loncron') {
343: my @machine_ids = &machine_ids($hostname);
344: foreach my $id (@machine_ids) {
345: my $response = &reply('serverhomeID',$id);
346: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
347: $serverhomeID = $response;
348: last;
349: }
350: }
351: if ($serverhomeID eq '') {
352: $serverhomeID = $machine_ids[-1];
353: }
354: } else {
355: $serverhomeID = $serverhomeIDs{$hostname};
356: }
357: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
358: }
359:
360: sub get_remote_globals {
361: my ($lonhost,$whathash,$ignore_cache) = @_;
362: my ($result,%returnhash,%whatneeded);
363: if (ref($whathash) eq 'HASH') {
364: foreach my $what (sort(keys(%{$whathash}))) {
365: my $hashid = $lonhost.'-'.$what;
366: my ($response,$cached);
367: unless ($ignore_cache) {
368: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
369: }
370: if (defined($cached)) {
371: $returnhash{$what} = $response;
372: } else {
373: $whatneeded{$what} = 1;
374: }
375: }
376: if (keys(%whatneeded) == 0) {
377: $result = 'ok';
378: } else {
379: my $requested = &freeze_escape(\%whatneeded);
380: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
381: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
382: ($rep eq 'unknown_cmd')) {
383: $result = $rep;
384: } else {
385: $result = 'ok';
386: my @pairs=split(/\&/,$rep);
387: foreach my $item (@pairs) {
388: my ($key,$value)=split(/=/,$item,2);
389: my $what = &unescape($key);
390: my $hashid = $lonhost.'-'.$what;
391: $returnhash{$what}=&thaw_unescape($value);
392: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
393: }
394: }
395: }
396: }
397: return ($result,\%returnhash);
398: }
399:
400: sub remote_devalidate_cache {
401: my ($lonhost,$cachekeys) = @_;
402: my $items;
403: return unless (ref($cachekeys) eq 'ARRAY');
404: my $cachestr = join('&',@{$cachekeys});
405: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
406: return $response;
407: }
408:
409: # -------------------------------------------------- Non-critical communication
410: sub subreply {
411: my ($cmd,$server)=@_;
412: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
413: #
414: # With loncnew process trimming, there's a timing hole between lonc server
415: # process exit and the master server picking up the listen on the AF_UNIX
416: # socket. In that time interval, a lock file will exist:
417:
418: my $lockfile=$peerfile.".lock";
419: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
420: sleep(0.1);
421: }
422: # At this point, either a loncnew parent is listening or an old lonc
423: # or loncnew child is listening so we can connect or everything's dead.
424: #
425: # We'll give the connection a few tries before abandoning it. If
426: # connection is not possible, we'll con_lost back to the client.
427: #
428: my $client;
429: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
430: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: last; # Connected!
435: } else {
436: &create_connection(&hostname($server),$server);
437: }
438: sleep(0.1); # Try again later if failed connection.
439: }
440: my $answer;
441: if ($client) {
442: print $client "sethost:$server:$cmd\n";
443: $answer=<$client>;
444: if (!$answer) { $answer="con_lost"; }
445: chomp($answer);
446: } else {
447: $answer = 'con_lost'; # Failed connection.
448: }
449: return $answer;
450: }
451:
452: sub reply {
453: my ($cmd,$server)=@_;
454: unless (defined(&hostname($server))) { return 'no_such_host'; }
455: my $answer=subreply($cmd,$server);
456: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
457: &logthis("<font color=\"blue\">WARNING:".
458: " $cmd to $server returned $answer</font>");
459: }
460: return $answer;
461: }
462:
463: # ----------------------------------------------------------- Send USR1 to lonc
464:
465: sub reconlonc {
466: my ($lonid) = @_;
467: if ($lonid) {
468: my $hostname = &hostname($lonid);
469: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
470: if ($hostname && -e $peerfile) {
471: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
472: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
473: Type => SOCK_STREAM,
474: Timeout => 10);
475: if ($client) {
476: print $client ("reset_retries\n");
477: my $answer=<$client>;
478: #reset just this one.
479: }
480: }
481: return;
482: }
483:
484: &logthis("Trying to reconnect lonc");
485: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
486: if (open(my $fh,"<$loncfile")) {
487: my $loncpid=<$fh>;
488: chomp($loncpid);
489: if (kill 0 => $loncpid) {
490: &logthis("lonc at pid $loncpid responding, sending USR1");
491: kill USR1 => $loncpid;
492: sleep 1;
493: } else {
494: &logthis(
495: "<font color=\"blue\">WARNING:".
496: " lonc at pid $loncpid not responding, giving up</font>");
497: }
498: } else {
499: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
500: }
501: }
502:
503: # ------------------------------------------------------ Critical communication
504:
505: sub critical {
506: my ($cmd,$server)=@_;
507: unless (&hostname($server)) {
508: &logthis("<font color=\"blue\">WARNING:".
509: " Critical message to unknown server ($server)</font>");
510: return 'no_such_host';
511: }
512: my $answer=reply($cmd,$server);
513: if ($answer eq 'con_lost') {
514: &reconlonc($server);
515: my $answer=reply($cmd,$server);
516: if ($answer eq 'con_lost') {
517: my $now=time;
518: my $middlename=$cmd;
519: $middlename=substr($middlename,0,16);
520: $middlename=~s/\W//g;
521: my $dfilename=
522: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
523: $dumpcount++;
524: {
525: my $dfh;
526: if (open($dfh,">$dfilename")) {
527: print $dfh "$cmd\n";
528: close($dfh);
529: }
530: }
531: sleep 1;
532: my $wcmd='';
533: {
534: my $dfh;
535: if (open($dfh,"<$dfilename")) {
536: $wcmd=<$dfh>;
537: close($dfh);
538: }
539: }
540: chomp($wcmd);
541: if ($wcmd eq $cmd) {
542: &logthis("<font color=\"blue\">WARNING: ".
543: "Connection buffer $dfilename: $cmd</font>");
544: &logperm("D:$server:$cmd");
545: return 'con_delayed';
546: } else {
547: &logthis("<font color=\"red\">CRITICAL:"
548: ." Critical connection failed: $server $cmd</font>");
549: &logperm("F:$server:$cmd");
550: return 'con_failed';
551: }
552: }
553: }
554: return $answer;
555: }
556:
557: # ------------------------------------------- check if return value is an error
558:
559: sub error {
560: my ($result) = @_;
561: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
562: if ($2 == 2) { return undef; }
563: return $1;
564: }
565: return undef;
566: }
567:
568: sub convert_and_load_session_env {
569: my ($lonidsdir,$handle)=@_;
570: my @profile;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return 0;
575: }
576: flock($idf,LOCK_SH);
577: @profile=<$idf>;
578: close($idf);
579: }
580: my %temp_env;
581: foreach my $line (@profile) {
582: if ($line !~ m/=/) {
583: return 0;
584: }
585: chomp($line);
586: my ($envname,$envvalue)=split(/=/,$line,2);
587: $temp_env{&unescape($envname)} = &unescape($envvalue);
588: }
589: unlink("$lonidsdir/$handle.id");
590: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
591: 0640)) {
592: %disk_env = %temp_env;
593: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
594: untie(%disk_env);
595: }
596: return 1;
597: }
598:
599: # ------------------------------------------- Transfer profile into environment
600: my $env_loaded;
601: sub transfer_profile_to_env {
602: my ($lonidsdir,$handle,$force_transfer) = @_;
603: if (!$force_transfer && $env_loaded) { return; }
604:
605: if (!defined($lonidsdir)) {
606: $lonidsdir = $perlvar{'lonIDsDir'};
607: }
608: if (!defined($handle)) {
609: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
610: }
611:
612: my $convert;
613: {
614: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
615: if (!$opened) {
616: return;
617: }
618: flock($idf,LOCK_SH);
619: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
620: &GDBM_READER(),0640)) {
621: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
622: untie(%disk_env);
623: } else {
624: $convert = 1;
625: }
626: }
627: if ($convert) {
628: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
629: &logthis("Failed to load session, or convert session.");
630: }
631: }
632:
633: my %remove;
634: while ( my $envname = each(%env) ) {
635: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
636: if ($time < time-300) {
637: $remove{$key}++;
638: }
639: }
640: }
641:
642: $env{'user.environment'} = "$lonidsdir/$handle.id";
643: $env_loaded=1;
644: foreach my $expired_key (keys(%remove)) {
645: &delenv($expired_key);
646: }
647: }
648:
649: # ---------------------------------------------------- Check for valid session
650: sub check_for_valid_session {
651: my ($r,$name,$userhashref) = @_;
652: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
653: if ($name eq '') {
654: $name = 'lonID';
655: }
656: my $lonid=$cookies{$name};
657: return undef if (!$lonid);
658:
659: my $handle=&LONCAPA::clean_handle($lonid->value);
660: my $lonidsdir;
661: if ($name eq 'lonDAV') {
662: $lonidsdir=$r->dir_config('lonDAVsessDir');
663: } else {
664: $lonidsdir=$r->dir_config('lonIDsDir');
665: }
666: return undef if (!-e "$lonidsdir/$handle.id");
667:
668: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
669: return undef if (!$opened);
670:
671: flock($idf,LOCK_SH);
672: my %disk_env;
673: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
674: &GDBM_READER(),0640)) {
675: return undef;
676: }
677:
678: if (!defined($disk_env{'user.name'})
679: || !defined($disk_env{'user.domain'})) {
680: return undef;
681: }
682:
683: if (ref($userhashref) eq 'HASH') {
684: $userhashref->{'name'} = $disk_env{'user.name'};
685: $userhashref->{'domain'} = $disk_env{'user.domain'};
686: }
687:
688: return $handle;
689: }
690:
691: sub timed_flock {
692: my ($file,$lock_type) = @_;
693: my $failed=0;
694: eval {
695: local $SIG{__DIE__}='DEFAULT';
696: local $SIG{ALRM}=sub {
697: $failed=1;
698: die("failed lock");
699: };
700: alarm(13);
701: flock($file,$lock_type);
702: alarm(0);
703: };
704: if ($failed) {
705: return undef;
706: } else {
707: return 1;
708: }
709: }
710:
711: # ---------------------------------------------------------- Append Environment
712:
713: sub appenv {
714: my ($newenv,$roles) = @_;
715: if (ref($newenv) eq 'HASH') {
716: foreach my $key (keys(%{$newenv})) {
717: my $refused = 0;
718: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
719: $refused = 1;
720: if (ref($roles) eq 'ARRAY') {
721: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
722: if (grep(/^\Q$role\E$/,@{$roles})) {
723: $refused = 0;
724: }
725: }
726: }
727: if ($refused) {
728: &logthis("<font color=\"blue\">WARNING: ".
729: "Attempt to modify environment ".$key." to ".$newenv->{$key}
730: .'</font>');
731: delete($newenv->{$key});
732: } else {
733: $env{$key}=$newenv->{$key};
734: }
735: }
736: my $opened = open(my $env_file,'+<',$env{'user.environment'});
737: if ($opened
738: && &timed_flock($env_file,LOCK_EX)
739: &&
740: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
741: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
742: while (my ($key,$value) = each(%{$newenv})) {
743: $disk_env{$key} = $value;
744: }
745: untie(%disk_env);
746: }
747: }
748: return 'ok';
749: }
750: # ----------------------------------------------------- Delete from Environment
751:
752: sub delenv {
753: my ($delthis,$regexp,$roles) = @_;
754: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
755: my $refused = 1;
756: if (ref($roles) eq 'ARRAY') {
757: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
758: if (grep(/^\Q$role\E$/,@{$roles})) {
759: $refused = 0;
760: }
761: }
762: if ($refused) {
763: &logthis("<font color=\"blue\">WARNING: ".
764: "Attempt to delete from environment ".$delthis);
765: return 'error';
766: }
767: }
768: my $opened = open(my $env_file,'+<',$env{'user.environment'});
769: if ($opened
770: && &timed_flock($env_file,LOCK_EX)
771: &&
772: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
773: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
774: foreach my $key (keys(%disk_env)) {
775: if ($regexp) {
776: if ($key=~/^$delthis/) {
777: delete($env{$key});
778: delete($disk_env{$key});
779: }
780: } else {
781: if ($key=~/^\Q$delthis\E/) {
782: delete($env{$key});
783: delete($disk_env{$key});
784: }
785: }
786: }
787: untie(%disk_env);
788: }
789: return 'ok';
790: }
791:
792: sub get_env_multiple {
793: my ($name) = @_;
794: my @values;
795: if (defined($env{$name})) {
796: # exists is it an array
797: if (ref($env{$name})) {
798: @values=@{ $env{$name} };
799: } else {
800: $values[0]=$env{$name};
801: }
802: }
803: return(@values);
804: }
805:
806: # ------------------------------------------------------------------- Locking
807:
808: sub set_lock {
809: my ($text)=@_;
810: $locknum++;
811: my $id=$$.'-'.$locknum;
812: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
813: 'session.lock.'.$id => $text});
814: return $id;
815: }
816:
817: sub get_locks {
818: my $num=0;
819: my %texts=();
820: foreach my $lock (split(/\,/,$env{'session.locks'})) {
821: if ($lock=~/\w/) {
822: $num++;
823: $texts{$lock}=$env{'session.lock.'.$lock};
824: }
825: }
826: return ($num,%texts);
827: }
828:
829: sub remove_lock {
830: my ($id)=@_;
831: my $newlocks='';
832: foreach my $lock (split(/\,/,$env{'session.locks'})) {
833: if (($lock=~/\w/) && ($lock ne $id)) {
834: $newlocks.=','.$lock;
835: }
836: }
837: &appenv({'session.locks' => $newlocks});
838: &delenv('session.lock.'.$id);
839: }
840:
841: sub remove_all_locks {
842: my $activelocks=$env{'session.locks'};
843: foreach my $lock (split(/\,/,$env{'session.locks'})) {
844: if ($lock=~/\w/) {
845: &remove_lock($lock);
846: }
847: }
848: }
849:
850:
851: # ------------------------------------------ Find out current server userload
852: sub userload {
853: my $numusers=0;
854: {
855: opendir(LONIDS,$perlvar{'lonIDsDir'});
856: my $filename;
857: my $curtime=time;
858: while ($filename=readdir(LONIDS)) {
859: next if ($filename eq '.' || $filename eq '..');
860: next if ($filename =~ /publicuser_\d+\.id/);
861: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
862: if ($curtime-$mtime < 1800) { $numusers++; }
863: }
864: closedir(LONIDS);
865: }
866: my $userloadpercent=0;
867: my $maxuserload=$perlvar{'lonUserLoadLim'};
868: if ($maxuserload) {
869: $userloadpercent=100*$numusers/$maxuserload;
870: }
871: $userloadpercent=sprintf("%.2f",$userloadpercent);
872: return $userloadpercent;
873: }
874:
875: # ------------------------------ Find server with least workload from spare.tab
876:
877: sub spareserver {
878: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
879: my $spare_server;
880: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
881: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
882: : $userloadpercent;
883: my ($uint_dom,$remotesessions);
884: if (($udom ne '') && (&domain($udom) ne '')) {
885: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
886: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
887: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
888: $remotesessions = $udomdefaults{'remotesessions'};
889: }
890: my $spareshash = &this_host_spares($udom);
891: if (ref($spareshash) eq 'HASH') {
892: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
893: foreach my $try_server (@{ $spareshash->{'primary'} }) {
894: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
895: $try_server));
896: ($spare_server, $lowest_load) =
897: &compare_server_load($try_server, $spare_server, $lowest_load);
898: }
899: }
900:
901: my $found_server = ($spare_server ne '' && $lowest_load < 100);
902:
903: if (!$found_server) {
904: if (ref($spareshash->{'default'}) eq 'ARRAY') {
905: foreach my $try_server (@{ $spareshash->{'default'} }) {
906: next unless (&spare_can_host($udom,$uint_dom,
907: $remotesessions,$try_server));
908: ($spare_server, $lowest_load) =
909: &compare_server_load($try_server, $spare_server, $lowest_load);
910: }
911: }
912: }
913: }
914:
915: if (!$want_server_name) {
916: my $protocol = 'http';
917: if ($protocol{$spare_server} eq 'https') {
918: $protocol = $protocol{$spare_server};
919: }
920: if (defined($spare_server)) {
921: my $hostname = &hostname($spare_server);
922: if (defined($hostname)) {
923: $spare_server = $protocol.'://'.$hostname;
924: }
925: }
926: }
927: return $spare_server;
928: }
929:
930: sub compare_server_load {
931: my ($try_server, $spare_server, $lowest_load, $required) = @_;
932:
933: if ($required) {
934: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
935: my $remoterev = &get_server_loncaparev(undef,$try_server);
936: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
937: if (($major eq '' && $minor eq '') ||
938: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
939: return ($spare_server,$lowest_load);
940: }
941: }
942:
943: my $loadans = &reply('load', $try_server);
944: my $userloadans = &reply('userload',$try_server);
945:
946: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
947: return ($spare_server, $lowest_load); #didn't get a number from the server
948: }
949:
950: my $load;
951: if ($loadans =~ /\d/) {
952: if ($userloadans =~ /\d/) {
953: #both are numbers, pick the bigger one
954: $load = ($loadans > $userloadans) ? $loadans
955: : $userloadans;
956: } else {
957: $load = $loadans;
958: }
959: } else {
960: $load = $userloadans;
961: }
962:
963: if (($load =~ /\d/) && ($load < $lowest_load)) {
964: $spare_server = $try_server;
965: $lowest_load = $load;
966: }
967: return ($spare_server,$lowest_load);
968: }
969:
970: # --------------------------- ask offload servers if user already has a session
971: sub find_existing_session {
972: my ($udom,$uname) = @_;
973: my $spareshash = &this_host_spares($udom);
974: if (ref($spareshash) eq 'HASH') {
975: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
976: foreach my $try_server (@{ $spareshash->{'primary'} }) {
977: return $try_server if (&has_user_session($try_server, $udom, $uname));
978: }
979: }
980: if (ref($spareshash->{'default'}) eq 'ARRAY') {
981: foreach my $try_server (@{ $spareshash->{'default'} }) {
982: return $try_server if (&has_user_session($try_server, $udom, $uname));
983: }
984: }
985: }
986: return;
987: }
988:
989: # -------------------------------- ask if server already has a session for user
990: sub has_user_session {
991: my ($lonid,$udom,$uname) = @_;
992: my $result = &reply(join(':','userhassession',
993: map {&escape($_)} ($udom,$uname)),$lonid);
994: return 1 if ($result eq 'ok');
995:
996: return 0;
997: }
998:
999: # --------- determine least loaded server in a user's domain which allows login
1000:
1001: sub choose_server {
1002: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1003: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1004: my %servers = &get_servers($udom);
1005: my $lowest_load = 30000;
1006: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1007: if ($skiploadbal) {
1008: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1009: unless (defined($cached)) {
1010: my $cachetime = 60*60*24;
1011: my %domconfig =
1012: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1013: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1014: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1015: $cachetime);
1016: }
1017: }
1018: }
1019: foreach my $lonhost (keys(%servers)) {
1020: if ($skiploadbal) {
1021: if (ref($balancers) eq 'HASH') {
1022: next if (exists($balancers->{$lonhost}));
1023: }
1024: }
1025: my $loginvia;
1026: if ($checkloginvia) {
1027: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1028: if ($loginvia) {
1029: my ($server,$path) = split(/:/,$loginvia);
1030: ($login_host, $lowest_load) =
1031: &compare_server_load($server, $login_host, $lowest_load, $required);
1032: if ($login_host eq $server) {
1033: $portal_path = $path;
1034: $isredirect = 1;
1035: }
1036: } else {
1037: ($login_host, $lowest_load) =
1038: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1039: if ($login_host eq $lonhost) {
1040: $portal_path = '';
1041: $isredirect = '';
1042: }
1043: }
1044: } else {
1045: ($login_host, $lowest_load) =
1046: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1047: }
1048: }
1049: if ($login_host ne '') {
1050: $hostname = &hostname($login_host);
1051: }
1052: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1053: }
1054:
1055: # --------------------------------------------- Try to change a user's password
1056:
1057: sub changepass {
1058: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1059: $currentpass = &escape($currentpass);
1060: $newpass = &escape($newpass);
1061: my $lonhost = $perlvar{'lonHostID'};
1062: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1063: $server);
1064: if (! $answer) {
1065: &logthis("No reply on password change request to $server ".
1066: "by $uname in domain $udom.");
1067: } elsif ($answer =~ "^ok") {
1068: &logthis("$uname in $udom successfully changed their password ".
1069: "on $server.");
1070: } elsif ($answer =~ "^pwchange_failure") {
1071: &logthis("$uname in $udom was unable to change their password ".
1072: "on $server. The action was blocked by either lcpasswd ".
1073: "or pwchange");
1074: } elsif ($answer =~ "^non_authorized") {
1075: &logthis("$uname in $udom did not get their password correct when ".
1076: "attempting to change it on $server.");
1077: } elsif ($answer =~ "^auth_mode_error") {
1078: &logthis("$uname in $udom attempted to change their password despite ".
1079: "not being locally or internally authenticated on $server.");
1080: } elsif ($answer =~ "^unknown_user") {
1081: &logthis("$uname in $udom attempted to change their password ".
1082: "on $server but were unable to because $server is not ".
1083: "their home server.");
1084: } elsif ($answer =~ "^refused") {
1085: &logthis("$server refused to change $uname in $udom password because ".
1086: "it was sent an unencrypted request to change the password.");
1087: } elsif ($answer =~ "invalid_client") {
1088: &logthis("$server refused to change $uname in $udom password because ".
1089: "it was a reset by e-mail originating from an invalid server.");
1090: }
1091: return $answer;
1092: }
1093:
1094: # ----------------------- Try to determine user's current authentication scheme
1095:
1096: sub queryauthenticate {
1097: my ($uname,$udom)=@_;
1098: my $uhome=&homeserver($uname,$udom);
1099: if (!$uhome) {
1100: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1101: return 'no_host';
1102: }
1103: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1104: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1105: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1106: }
1107: return $answer;
1108: }
1109:
1110: # --------- Try to authenticate user from domain's lib servers (first this one)
1111:
1112: sub authenticate {
1113: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1114: $upass=&escape($upass);
1115: $uname= &LONCAPA::clean_username($uname);
1116: my $uhome=&homeserver($uname,$udom,1);
1117: my $newhome;
1118: if ((!$uhome) || ($uhome eq 'no_host')) {
1119: # Maybe the machine was offline and only re-appeared again recently?
1120: &reconlonc();
1121: # One more
1122: $uhome=&homeserver($uname,$udom,1);
1123: if (($uhome eq 'no_host') && $checkdefauth) {
1124: if (defined(&domain($udom,'primary'))) {
1125: $newhome=&domain($udom,'primary');
1126: }
1127: if ($newhome ne '') {
1128: $uhome = $newhome;
1129: }
1130: }
1131: if ((!$uhome) || ($uhome eq 'no_host')) {
1132: &logthis("User $uname at $udom is unknown in authenticate");
1133: return 'no_host';
1134: }
1135: }
1136: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1137: if ($answer eq 'authorized') {
1138: if ($newhome) {
1139: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1140: return 'no_account_on_host';
1141: } else {
1142: &logthis("User $uname at $udom authorized by $uhome");
1143: return $uhome;
1144: }
1145: }
1146: if ($answer eq 'non_authorized') {
1147: &logthis("User $uname at $udom rejected by $uhome");
1148: return 'no_host';
1149: }
1150: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1151: return 'no_host';
1152: }
1153:
1154: sub can_host_session {
1155: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1156: my $canhost = 1;
1157: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1158: if (ref($remotesessions) eq 'HASH') {
1159: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1160: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1161: $canhost = 0;
1162: } else {
1163: $canhost = 1;
1164: }
1165: }
1166: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1167: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1168: $canhost = 1;
1169: } else {
1170: $canhost = 0;
1171: }
1172: }
1173: if ($canhost) {
1174: if ($remotesessions->{'version'} ne '') {
1175: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1176: if ($reqmajor ne '' && $reqminor ne '') {
1177: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1178: my $major = $1;
1179: my $minor = $2;
1180: if (($major < $reqmajor ) ||
1181: (($major == $reqmajor) && ($minor < $reqminor))) {
1182: $canhost = 0;
1183: }
1184: } else {
1185: $canhost = 0;
1186: }
1187: }
1188: }
1189: }
1190: }
1191: if ($canhost) {
1192: if (ref($hostedsessions) eq 'HASH') {
1193: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1194: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1195: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1196: if (($uint_dom ne '') &&
1197: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1198: $canhost = 0;
1199: } else {
1200: $canhost = 1;
1201: }
1202: }
1203: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1204: if (($uint_dom ne '') &&
1205: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1206: $canhost = 1;
1207: } else {
1208: $canhost = 0;
1209: }
1210: }
1211: }
1212: }
1213: return $canhost;
1214: }
1215:
1216: sub spare_can_host {
1217: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1218: my $canhost=1;
1219: my $try_server_hostname = &hostname($try_server);
1220: my $serverhomeID = &get_server_homeID($try_server_hostname);
1221: my $serverhomedom = &host_domain($serverhomeID);
1222: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1223: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1224: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1225: $canhost = 0;
1226: }
1227: }
1228: if (($canhost) && ($uint_dom)) {
1229: my @intdoms;
1230: my $internet_names = &get_internet_names($try_server);
1231: if (ref($internet_names) eq 'ARRAY') {
1232: @intdoms = @{$internet_names};
1233: }
1234: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1235: my $remoterev = &get_server_loncaparev(undef,$try_server);
1236: $canhost = &can_host_session($udom,$try_server,$remoterev,
1237: $remotesessions,
1238: $defdomdefaults{'hostedsessions'});
1239: }
1240: }
1241: return $canhost;
1242: }
1243:
1244: sub this_host_spares {
1245: my ($dom) = @_;
1246: my ($dom_in_use,$lonhost_in_use,$result);
1247: my @hosts = ¤t_machine_ids();
1248: foreach my $lonhost (@hosts) {
1249: if (&host_domain($lonhost) eq $dom) {
1250: $dom_in_use = $dom;
1251: $lonhost_in_use = $lonhost;
1252: last;
1253: }
1254: }
1255: if ($dom_in_use ne '') {
1256: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1257: }
1258: if (ref($result) ne 'HASH') {
1259: $lonhost_in_use = $perlvar{'lonHostID'};
1260: $dom_in_use = &host_domain($lonhost_in_use);
1261: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1262: if (ref($result) ne 'HASH') {
1263: $result = \%spareid;
1264: }
1265: }
1266: return $result;
1267: }
1268:
1269: sub spares_for_offload {
1270: my ($dom_in_use,$lonhost_in_use) = @_;
1271: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1272: if (defined($cached)) {
1273: return $result;
1274: } else {
1275: my $cachetime = 60*60*24;
1276: my %domconfig =
1277: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1278: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1279: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1280: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1281: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1282: }
1283: }
1284: }
1285: }
1286: return;
1287: }
1288:
1289: sub get_lonbalancer_config {
1290: my ($servers) = @_;
1291: my ($currbalancer,$currtargets);
1292: if (ref($servers) eq 'HASH') {
1293: foreach my $server (keys(%{$servers})) {
1294: my %what = (
1295: spareid => 1,
1296: perlvar => 1,
1297: );
1298: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1299: if ($result eq 'ok') {
1300: if (ref($returnhash) eq 'HASH') {
1301: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1302: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1303: $currbalancer = $server;
1304: $currtargets = {};
1305: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1306: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1307: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1308: }
1309: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1310: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1311: }
1312: }
1313: last;
1314: }
1315: }
1316: }
1317: }
1318: }
1319: }
1320: return ($currbalancer,$currtargets);
1321: }
1322:
1323: sub check_loadbalancing {
1324: my ($uname,$udom,$caller) = @_;
1325: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1326: $rule_in_effect,$offloadto,$otherserver);
1327: my $lonhost = $perlvar{'lonHostID'};
1328: my @hosts = ¤t_machine_ids();
1329: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1330: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1331: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1332: my $serverhomedom = &host_domain($lonhost);
1333: my $domneedscache;
1334: my $cachetime = 60*60*24;
1335:
1336: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1337: $dom_in_use = $udom;
1338: $homeintdom = 1;
1339: } else {
1340: $dom_in_use = $serverhomedom;
1341: }
1342: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1343: unless (defined($cached)) {
1344: my %domconfig =
1345: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1346: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1347: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1348: } else {
1349: $domneedscache = $dom_in_use;
1350: }
1351: }
1352: if (ref($result) eq 'HASH') {
1353: ($is_balancer,$currtargets,$currrules) =
1354: &check_balancer_result($result,@hosts);
1355: if ($is_balancer) {
1356: if (ref($currrules) eq 'HASH') {
1357: if ($homeintdom) {
1358: if ($uname ne '') {
1359: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1360: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1361: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1362: $rule_in_effect = $currrules->{'_LC_author'};
1363: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1364: $rule_in_effect = $currrules->{'_LC_adv'}
1365: }
1366: }
1367: if ($rule_in_effect eq '') {
1368: my %userenv = &userenvironment($udom,$uname,'inststatus');
1369: if ($userenv{'inststatus'} ne '') {
1370: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1371: my ($othertitle,$usertypes,$types) =
1372: &Apache::loncommon::sorted_inst_types($udom);
1373: if (ref($types) eq 'ARRAY') {
1374: foreach my $type (@{$types}) {
1375: if (grep(/^\Q$type\E$/,@statuses)) {
1376: if (exists($currrules->{$type})) {
1377: $rule_in_effect = $currrules->{$type};
1378: }
1379: }
1380: }
1381: }
1382: } else {
1383: if (exists($currrules->{'default'})) {
1384: $rule_in_effect = $currrules->{'default'};
1385: }
1386: }
1387: }
1388: } else {
1389: if (exists($currrules->{'default'})) {
1390: $rule_in_effect = $currrules->{'default'};
1391: }
1392: }
1393: } else {
1394: if ($currrules->{'_LC_external'} ne '') {
1395: $rule_in_effect = $currrules->{'_LC_external'};
1396: }
1397: }
1398: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1399: $uname,$udom);
1400: }
1401: }
1402: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1403: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1404: unless (defined($cached)) {
1405: my %domconfig =
1406: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1407: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1408: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1409: } else {
1410: $domneedscache = $serverhomedom;
1411: }
1412: }
1413: if (ref($result) eq 'HASH') {
1414: ($is_balancer,$currtargets,$currrules) =
1415: &check_balancer_result($result,@hosts);
1416: if ($is_balancer) {
1417: if (ref($currrules) eq 'HASH') {
1418: if ($currrules->{'_LC_internetdom'} ne '') {
1419: $rule_in_effect = $currrules->{'_LC_internetdom'};
1420: }
1421: }
1422: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1423: $uname,$udom);
1424: }
1425: } else {
1426: if ($perlvar{'lonBalancer'} eq 'yes') {
1427: $is_balancer = 1;
1428: $offloadto = &this_host_spares($dom_in_use);
1429: }
1430: unless (defined($cached)) {
1431: $domneedscache = $serverhomedom;
1432: }
1433: }
1434: } else {
1435: if ($perlvar{'lonBalancer'} eq 'yes') {
1436: $is_balancer = 1;
1437: $offloadto = &this_host_spares($dom_in_use);
1438: }
1439: unless (defined($cached)) {
1440: $domneedscache = $serverhomedom;
1441: }
1442: }
1443: if ($domneedscache) {
1444: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1445: }
1446: if ($is_balancer) {
1447: my $lowest_load = 30000;
1448: if (ref($offloadto) eq 'HASH') {
1449: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1450: foreach my $try_server (@{$offloadto->{'primary'}}) {
1451: ($otherserver,$lowest_load) =
1452: &compare_server_load($try_server,$otherserver,$lowest_load);
1453: }
1454: }
1455: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1456:
1457: if (!$found_server) {
1458: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1459: foreach my $try_server (@{$offloadto->{'default'}}) {
1460: ($otherserver,$lowest_load) =
1461: &compare_server_load($try_server,$otherserver,$lowest_load);
1462: }
1463: }
1464: }
1465: } elsif (ref($offloadto) eq 'ARRAY') {
1466: if (@{$offloadto} == 1) {
1467: $otherserver = $offloadto->[0];
1468: } elsif (@{$offloadto} > 1) {
1469: foreach my $try_server (@{$offloadto}) {
1470: ($otherserver,$lowest_load) =
1471: &compare_server_load($try_server,$otherserver,$lowest_load);
1472: }
1473: }
1474: }
1475: unless ($caller eq 'login') {
1476: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1477: $is_balancer = 0;
1478: if ($uname ne '' && $udom ne '') {
1479: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1480:
1481: &appenv({'user.loadbalexempt' => $lonhost,
1482: 'user.loadbalcheck.time' => time});
1483: }
1484: }
1485: }
1486: }
1487: }
1488: return ($is_balancer,$otherserver);
1489: }
1490:
1491: sub check_balancer_result {
1492: my ($result,@hosts) = @_;
1493: my ($is_balancer,$currtargets,$currrules);
1494: if (ref($result) eq 'HASH') {
1495: if ($result->{'lonhost'} ne '') {
1496: my $currbalancer = $result->{'lonhost'};
1497: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1498: $is_balancer = 1;
1499: $currtargets = $result->{'targets'};
1500: $currrules = $result->{'rules'};
1501: }
1502: } else {
1503: foreach my $key (keys(%{$result})) {
1504: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1505: (ref($result->{$key}) eq 'HASH')) {
1506: $is_balancer = 1;
1507: $currrules = $result->{$key}{'rules'};
1508: $currtargets = $result->{$key}{'targets'};
1509: last;
1510: }
1511: }
1512: }
1513: }
1514: return ($is_balancer,$currtargets,$currrules);
1515: }
1516:
1517: sub get_loadbalancer_targets {
1518: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1519: my $offloadto;
1520: if ($rule_in_effect eq 'none') {
1521: return [$perlvar{'lonHostID'}];
1522: } elsif ($rule_in_effect eq '') {
1523: $offloadto = $currtargets;
1524: } else {
1525: if ($rule_in_effect eq 'homeserver') {
1526: my $homeserver = &homeserver($uname,$udom);
1527: if ($homeserver ne 'no_host') {
1528: $offloadto = [$homeserver];
1529: }
1530: } elsif ($rule_in_effect eq 'externalbalancer') {
1531: my %domconfig =
1532: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1533: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1534: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1535: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1536: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1537: }
1538: }
1539: } else {
1540: my %servers = &internet_dom_servers($udom);
1541: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1542: if (&hostname($remotebalancer) ne '') {
1543: $offloadto = [$remotebalancer];
1544: }
1545: }
1546: } elsif (&hostname($rule_in_effect) ne '') {
1547: $offloadto = [$rule_in_effect];
1548: }
1549: }
1550: return $offloadto;
1551: }
1552:
1553: sub internet_dom_servers {
1554: my ($dom) = @_;
1555: my (%uniqservers,%servers);
1556: my $primaryserver = &hostname(&domain($dom,'primary'));
1557: my @machinedoms = &machine_domains($primaryserver);
1558: foreach my $mdom (@machinedoms) {
1559: my %currservers = %servers;
1560: my %server = &get_servers($mdom);
1561: %servers = (%currservers,%server);
1562: }
1563: my %by_hostname;
1564: foreach my $id (keys(%servers)) {
1565: push(@{$by_hostname{$servers{$id}}},$id);
1566: }
1567: foreach my $hostname (sort(keys(%by_hostname))) {
1568: if (@{$by_hostname{$hostname}} > 1) {
1569: my $match = 0;
1570: foreach my $id (@{$by_hostname{$hostname}}) {
1571: if (&host_domain($id) eq $dom) {
1572: $uniqservers{$id} = $hostname;
1573: $match = 1;
1574: }
1575: }
1576: unless ($match) {
1577: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1578: }
1579: } else {
1580: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1581: }
1582: }
1583: return %uniqservers;
1584: }
1585:
1586: # ---------------------- Find the homebase for a user from domain's lib servers
1587:
1588: my %homecache;
1589: sub homeserver {
1590: my ($uname,$udom,$ignoreBadCache)=@_;
1591: my $index="$uname:$udom";
1592:
1593: if (exists($homecache{$index})) { return $homecache{$index}; }
1594:
1595: my %servers = &get_servers($udom,'library');
1596: foreach my $tryserver (keys(%servers)) {
1597: next if ($ignoreBadCache ne 'true' &&
1598: exists($badServerCache{$tryserver}));
1599:
1600: my $answer=reply("home:$udom:$uname",$tryserver);
1601: if ($answer eq 'found') {
1602: delete($badServerCache{$tryserver});
1603: return $homecache{$index}=$tryserver;
1604: } elsif ($answer eq 'no_host') {
1605: $badServerCache{$tryserver}=1;
1606: }
1607: }
1608: return 'no_host';
1609: }
1610:
1611: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1612:
1613: sub idget {
1614: my ($udom,$idsref,$namespace)=@_;
1615: my %returnhash=();
1616: my @ids=();
1617: if (ref($idsref) eq 'ARRAY') {
1618: @ids = @{$idsref};
1619: } else {
1620: return %returnhash;
1621: }
1622: if ($namespace eq '') {
1623: $namespace = 'ids';
1624: }
1625:
1626: my %servers = &get_servers($udom,'library');
1627: foreach my $tryserver (keys(%servers)) {
1628: my $idlist=join('&', map { &escape($_); } @ids);
1629: if ($namespace eq 'ids') {
1630: $idlist=~tr/A-Z/a-z/;
1631: }
1632: my $reply;
1633: if ($namespace eq 'ids') {
1634: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1635: } else {
1636: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1637: }
1638: my @answer=();
1639: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1640: @answer=split(/\&/,$reply);
1641: } ;
1642: my $i;
1643: for ($i=0;$i<=$#ids;$i++) {
1644: if ($answer[$i]) {
1645: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1646: }
1647: }
1648: }
1649: return %returnhash;
1650: }
1651:
1652: # ------------------------------------- Find the IDs behind a list of usernames
1653:
1654: sub idrget {
1655: my ($udom,@unames)=@_;
1656: my %returnhash=();
1657: foreach my $uname (@unames) {
1658: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1659: }
1660: return %returnhash;
1661: }
1662:
1663: # Store away a list of names and associated student/employee IDs or clicker IDs
1664:
1665: sub idput {
1666: my ($udom,$idsref,$uhom,$namespace)=@_;
1667: my %servers=();
1668: my %ids=();
1669: my %byid = ();
1670: if (ref($idsref) eq 'HASH') {
1671: %ids=%{$idsref};
1672: }
1673: if ($namespace eq '') {
1674: $namespace = 'ids';
1675: }
1676: foreach my $uname (keys(%ids)) {
1677: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1678: if ($uhom eq '') {
1679: $uhom=&homeserver($uname,$udom);
1680: }
1681: if ($uhom ne 'no_host') {
1682: my $esc_unam=&escape($uname);
1683: if ($namespace eq 'ids') {
1684: my $id=&escape($ids{$uname});
1685: $id=~tr/A-Z/a-z/;
1686: my $esc_unam=&escape($uname);
1687: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1688: } else {
1689: my @currids = split(/,/,$ids{$uname});
1690: foreach my $id (@currids) {
1691: $byid{$uhom}{$id} .= $uname.',';
1692: }
1693: }
1694: }
1695: }
1696: if ($namespace eq 'clickers') {
1697: foreach my $server (keys(%byid)) {
1698: if (ref($byid{$server}) eq 'HASH') {
1699: foreach my $id (keys(%{$byid{$server}})) {
1700: $byid{$server} =~ s/,$//;
1701: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1702: }
1703: }
1704: }
1705: }
1706: foreach my $server (keys(%servers)) {
1707: $servers{$server} =~ s/\&$//;
1708: if ($namespace eq 'ids') {
1709: &critical('idput:'.$udom.':'.$servers{$server},$server);
1710: } else {
1711: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1712: }
1713: }
1714: }
1715:
1716: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1717:
1718: sub iddel {
1719: my ($udom,$idshashref,$uhome,$namespace)=@_;
1720: my %result=();
1721: my %ids=();
1722: my %byid = ();
1723: if (ref($idshashref) eq 'HASH') {
1724: %ids=%{$idshashref};
1725: } else {
1726: return %result;
1727: }
1728: if ($namespace eq '') {
1729: $namespace = 'ids';
1730: }
1731: my %servers=();
1732: while (my ($id,$unamestr) = each(%ids)) {
1733: if ($namespace eq 'ids') {
1734: my $uhom = $uhome;
1735: if ($uhom eq '') {
1736: $uhom=&homeserver($unamestr,$udom);
1737: }
1738: if ($uhom ne 'no_host') {
1739: $servers{$uhom}.='&'.&escape($id);
1740: }
1741: } else {
1742: my @curritems = split(/,/,$ids{$id});
1743: foreach my $uname (@curritems) {
1744: my $uhom = $uhome;
1745: if ($uhom eq '') {
1746: $uhom=&homeserver($uname,$udom);
1747: }
1748: if ($uhom ne 'no_host') {
1749: $byid{$uhom}{$id} .= $uname.',';
1750: }
1751: }
1752: }
1753: }
1754: if ($namespace eq 'clickers') {
1755: foreach my $server (keys(%byid)) {
1756: if (ref($byid{$server}) eq 'HASH') {
1757: foreach my $id (keys(%{$byid{$server}})) {
1758: $byid{$server}{$id} =~ s/,$//;
1759: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1760: }
1761: }
1762: }
1763: }
1764: foreach my $server (keys(%servers)) {
1765: $servers{$server} =~ s/\&$//;
1766: if ($namespace eq 'ids') {
1767: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1768: } elsif ($namespace eq 'clickers') {
1769: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1770: }
1771: }
1772: return %result;
1773: }
1774:
1775: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1776:
1777: sub updateclickers {
1778: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1779: my %clickers;
1780: if (ref($idshashref) eq 'HASH') {
1781: %clickers=%{$idshashref};
1782: } else {
1783: return;
1784: }
1785: my $items='';
1786: foreach my $item (keys(%clickers)) {
1787: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1788: }
1789: $items=~s/\&$//;
1790: my $request = "updateclickers:$udom:$action:$items";
1791: if ($critical) {
1792: return &critical($request,$uhome);
1793: } else {
1794: return &reply($request,$uhome);
1795: }
1796: }
1797:
1798: # ------------------------------dump from db file owned by domainconfig user
1799: sub dump_dom {
1800: my ($namespace, $udom, $regexp) = @_;
1801:
1802: $udom ||= $env{'user.domain'};
1803:
1804: return () unless $udom;
1805:
1806: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1807: }
1808:
1809: # ------------------------------------------ get items from domain db files
1810:
1811: sub get_dom {
1812: my ($namespace,$storearr,$udom,$uhome)=@_;
1813: return if ($udom eq 'public');
1814: my $items='';
1815: foreach my $item (@$storearr) {
1816: $items.=&escape($item).'&';
1817: }
1818: $items=~s/\&$//;
1819: if (!$udom) {
1820: $udom=$env{'user.domain'};
1821: return if ($udom eq 'public');
1822: if (defined(&domain($udom,'primary'))) {
1823: $uhome=&domain($udom,'primary');
1824: } else {
1825: undef($uhome);
1826: }
1827: } else {
1828: if (!$uhome) {
1829: if (defined(&domain($udom,'primary'))) {
1830: $uhome=&domain($udom,'primary');
1831: }
1832: }
1833: }
1834: if ($udom && $uhome && ($uhome ne 'no_host')) {
1835: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1836: my %returnhash;
1837: if ($rep eq '' || $rep =~ /^error: 2 /) {
1838: return %returnhash;
1839: }
1840: my @pairs=split(/\&/,$rep);
1841: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1842: return @pairs;
1843: }
1844: my $i=0;
1845: foreach my $item (@$storearr) {
1846: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1847: $i++;
1848: }
1849: return %returnhash;
1850: } else {
1851: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1852: }
1853: }
1854:
1855: # -------------------------------------------- put items in domain db files
1856:
1857: sub put_dom {
1858: my ($namespace,$storehash,$udom,$uhome)=@_;
1859: if (!$udom) {
1860: $udom=$env{'user.domain'};
1861: if (defined(&domain($udom,'primary'))) {
1862: $uhome=&domain($udom,'primary');
1863: } else {
1864: undef($uhome);
1865: }
1866: } else {
1867: if (!$uhome) {
1868: if (defined(&domain($udom,'primary'))) {
1869: $uhome=&domain($udom,'primary');
1870: }
1871: }
1872: }
1873: if ($udom && $uhome && ($uhome ne 'no_host')) {
1874: my $items='';
1875: foreach my $item (keys(%$storehash)) {
1876: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1877: }
1878: $items=~s/\&$//;
1879: return &reply("putdom:$udom:$namespace:$items",$uhome);
1880: } else {
1881: &logthis("put_dom failed - no homeserver and/or domain");
1882: }
1883: }
1884:
1885: # --------------------- newput for items in db file owned by domainconfig user
1886: sub newput_dom {
1887: my ($namespace,$storehash,$udom) = @_;
1888: my $result;
1889: if (!$udom) {
1890: $udom=$env{'user.domain'};
1891: }
1892: if ($udom) {
1893: my $uname = &get_domainconfiguser($udom);
1894: $result = &newput($namespace,$storehash,$udom,$uname);
1895: }
1896: return $result;
1897: }
1898:
1899: # --------------------- delete for items in db file owned by domainconfig user
1900: sub del_dom {
1901: my ($namespace,$storearr,$udom)=@_;
1902: if (ref($storearr) eq 'ARRAY') {
1903: if (!$udom) {
1904: $udom=$env{'user.domain'};
1905: }
1906: if ($udom) {
1907: my $uname = &get_domainconfiguser($udom);
1908: return &del($namespace,$storearr,$udom,$uname);
1909: }
1910: }
1911: }
1912:
1913: # ----------------------------------construct domainconfig user for a domain
1914: sub get_domainconfiguser {
1915: my ($udom) = @_;
1916: return $udom.'-domainconfig';
1917: }
1918:
1919: sub retrieve_inst_usertypes {
1920: my ($udom) = @_;
1921: my (%returnhash,@order);
1922: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1923: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1924: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1925: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1926: } else {
1927: if (defined(&domain($udom,'primary'))) {
1928: my $uhome=&domain($udom,'primary');
1929: my $rep=&reply("inst_usertypes:$udom",$uhome);
1930: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1931: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1932: return (\%returnhash,\@order);
1933: }
1934: my ($hashitems,$orderitems) = split(/:/,$rep);
1935: my @pairs=split(/\&/,$hashitems);
1936: foreach my $item (@pairs) {
1937: my ($key,$value)=split(/=/,$item,2);
1938: $key = &unescape($key);
1939: next if ($key =~ /^error: 2 /);
1940: $returnhash{$key}=&thaw_unescape($value);
1941: }
1942: my @esc_order = split(/\&/,$orderitems);
1943: foreach my $item (@esc_order) {
1944: push(@order,&unescape($item));
1945: }
1946: } else {
1947: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1948: }
1949: return (\%returnhash,\@order);
1950: }
1951: }
1952:
1953: sub is_domainimage {
1954: my ($url) = @_;
1955: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
1956: if (&domain($1) ne '') {
1957: return '1';
1958: }
1959: }
1960: return;
1961: }
1962:
1963: sub inst_directory_query {
1964: my ($srch) = @_;
1965: my $udom = $srch->{'srchdomain'};
1966: my %results;
1967: my $homeserver = &domain($udom,'primary');
1968: my $outcome;
1969: if ($homeserver ne '') {
1970: my $queryid=&reply("querysend:instdirsearch:".
1971: &escape($srch->{'srchby'}).':'.
1972: &escape($srch->{'srchterm'}).':'.
1973: &escape($srch->{'srchtype'}),$homeserver);
1974: my $host=&hostname($homeserver);
1975: if ($queryid !~/^\Q$host\E\_/) {
1976: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1977: return;
1978: }
1979: my $response = &get_query_reply($queryid);
1980: my $maxtries = 5;
1981: my $tries = 1;
1982: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1983: $response = &get_query_reply($queryid);
1984: $tries ++;
1985: }
1986:
1987: if (!&error($response) && $response ne 'refused') {
1988: if ($response eq 'unavailable') {
1989: $outcome = $response;
1990: } else {
1991: $outcome = 'ok';
1992: my @matches = split(/\n/,$response);
1993: foreach my $match (@matches) {
1994: my ($key,$value) = split(/=/,$match);
1995: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1996: }
1997: }
1998: }
1999: }
2000: return ($outcome,%results);
2001: }
2002:
2003: sub usersearch {
2004: my ($srch) = @_;
2005: my $dom = $srch->{'srchdomain'};
2006: my %results;
2007: my %libserv = &all_library();
2008: my $query = 'usersearch';
2009: foreach my $tryserver (keys(%libserv)) {
2010: if (&host_domain($tryserver) eq $dom) {
2011: my $host=&hostname($tryserver);
2012: my $queryid=
2013: &reply("querysend:".&escape($query).':'.
2014: &escape($srch->{'srchby'}).':'.
2015: &escape($srch->{'srchtype'}).':'.
2016: &escape($srch->{'srchterm'}),$tryserver);
2017: if ($queryid !~/^\Q$host\E\_/) {
2018: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2019: next;
2020: }
2021: my $reply = &get_query_reply($queryid);
2022: my $maxtries = 1;
2023: my $tries = 1;
2024: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2025: $reply = &get_query_reply($queryid);
2026: $tries ++;
2027: }
2028: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2029: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2030: } else {
2031: my @matches;
2032: if ($reply =~ /\n/) {
2033: @matches = split(/\n/,$reply);
2034: } else {
2035: @matches = split(/\&/,$reply);
2036: }
2037: foreach my $match (@matches) {
2038: my ($uname,$udom,%userhash);
2039: foreach my $entry (split(/:/,$match)) {
2040: my ($key,$value) =
2041: map {&unescape($_);} split(/=/,$entry);
2042: $userhash{$key} = $value;
2043: if ($key eq 'username') {
2044: $uname = $value;
2045: } elsif ($key eq 'domain') {
2046: $udom = $value;
2047: }
2048: }
2049: $results{$uname.':'.$udom} = \%userhash;
2050: }
2051: }
2052: }
2053: }
2054: return %results;
2055: }
2056:
2057: sub get_instuser {
2058: my ($udom,$uname,$id) = @_;
2059: my $homeserver = &domain($udom,'primary');
2060: my ($outcome,%results);
2061: if ($homeserver ne '') {
2062: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2063: &escape($id).':'.&escape($udom),$homeserver);
2064: my $host=&hostname($homeserver);
2065: if ($queryid !~/^\Q$host\E\_/) {
2066: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2067: return;
2068: }
2069: my $response = &get_query_reply($queryid);
2070: my $maxtries = 5;
2071: my $tries = 1;
2072: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2073: $response = &get_query_reply($queryid);
2074: $tries ++;
2075: }
2076: if (!&error($response) && $response ne 'refused') {
2077: if ($response eq 'unavailable') {
2078: $outcome = $response;
2079: } else {
2080: $outcome = 'ok';
2081: my @matches = split(/\n/,$response);
2082: foreach my $match (@matches) {
2083: my ($key,$value) = split(/=/,$match);
2084: $results{&unescape($key)} = &thaw_unescape($value);
2085: }
2086: }
2087: }
2088: }
2089: my %userinfo;
2090: if (ref($results{$uname}) eq 'HASH') {
2091: %userinfo = %{$results{$uname}};
2092: }
2093: return ($outcome,%userinfo);
2094: }
2095:
2096: sub get_multiple_instusers {
2097: my ($udom,$users,$caller) = @_;
2098: my ($outcome,$results);
2099: if (ref($users) eq 'HASH') {
2100: my $count = keys(%{$users});
2101: my $requested = &freeze_escape($users);
2102: my $homeserver = &domain($udom,'primary');
2103: if ($homeserver ne '') {
2104: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2105: my $host=&hostname($homeserver);
2106: if ($queryid !~/^\Q$host\E\_/) {
2107: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2108: ' for host: '.$homeserver.'in domain '.$udom);
2109: return ($outcome,$results);
2110: }
2111: my $response = &get_query_reply($queryid);
2112: my $maxtries = 5;
2113: if ($count > 100) {
2114: $maxtries = 1+int($count/20);
2115: }
2116: my $tries = 1;
2117: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2118: $response = &get_query_reply($queryid);
2119: $tries ++;
2120: }
2121: if ($response eq '') {
2122: $results = {};
2123: foreach my $key (keys(%{$users})) {
2124: my ($uname,$id);
2125: if ($caller eq 'id') {
2126: $id = $key;
2127: } else {
2128: $uname = $key;
2129: }
2130: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2131: $outcome = $resp;
2132: if ($resp eq 'ok') {
2133: %{$results} = (%{$results}, %info);
2134: } else {
2135: last;
2136: }
2137: }
2138: } elsif(!&error($response) && ($response ne 'refused')) {
2139: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2140: $outcome = $response;
2141: } else {
2142: ($outcome,my $userdata) = split(/=/,$response,2);
2143: if ($outcome eq 'ok') {
2144: $results = &thaw_unescape($userdata);
2145: }
2146: }
2147: }
2148: }
2149: }
2150: return ($outcome,$results);
2151: }
2152:
2153: sub inst_rulecheck {
2154: my ($udom,$uname,$id,$item,$rules) = @_;
2155: my %returnhash;
2156: if ($udom ne '') {
2157: if (ref($rules) eq 'ARRAY') {
2158: @{$rules} = map {&escape($_);} (@{$rules});
2159: my $rulestr = join(':',@{$rules});
2160: my $homeserver=&domain($udom,'primary');
2161: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2162: my $response;
2163: if ($item eq 'username') {
2164: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2165: ':'.&escape($uname).':'.$rulestr,
2166: $homeserver));
2167: } elsif ($item eq 'id') {
2168: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2169: ':'.&escape($id).':'.$rulestr,
2170: $homeserver));
2171: } elsif ($item eq 'selfcreate') {
2172: $response=&unescape(&reply('instselfcreatecheck:'.
2173: &escape($udom).':'.&escape($uname).
2174: ':'.$rulestr,$homeserver));
2175: }
2176: if ($response ne 'refused') {
2177: my @pairs=split(/\&/,$response);
2178: foreach my $item (@pairs) {
2179: my ($key,$value)=split(/=/,$item,2);
2180: $key = &unescape($key);
2181: next if ($key =~ /^error: 2 /);
2182: $returnhash{$key}=&thaw_unescape($value);
2183: }
2184: }
2185: }
2186: }
2187: }
2188: return %returnhash;
2189: }
2190:
2191: sub inst_userrules {
2192: my ($udom,$check) = @_;
2193: my (%ruleshash,@ruleorder);
2194: if ($udom ne '') {
2195: my $homeserver=&domain($udom,'primary');
2196: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2197: my $response;
2198: if ($check eq 'id') {
2199: $response=&reply('instidrules:'.&escape($udom),
2200: $homeserver);
2201: } elsif ($check eq 'email') {
2202: $response=&reply('instemailrules:'.&escape($udom),
2203: $homeserver);
2204: } else {
2205: $response=&reply('instuserrules:'.&escape($udom),
2206: $homeserver);
2207: }
2208: if (($response ne 'refused') && ($response ne 'error') &&
2209: ($response ne 'unknown_cmd') &&
2210: ($response ne 'no_such_host')) {
2211: my ($hashitems,$orderitems) = split(/:/,$response);
2212: my @pairs=split(/\&/,$hashitems);
2213: foreach my $item (@pairs) {
2214: my ($key,$value)=split(/=/,$item,2);
2215: $key = &unescape($key);
2216: next if ($key =~ /^error: 2 /);
2217: $ruleshash{$key}=&thaw_unescape($value);
2218: }
2219: my @esc_order = split(/\&/,$orderitems);
2220: foreach my $item (@esc_order) {
2221: push(@ruleorder,&unescape($item));
2222: }
2223: }
2224: }
2225: }
2226: return (\%ruleshash,\@ruleorder);
2227: }
2228:
2229: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2230:
2231: sub get_domain_defaults {
2232: my ($domain,$ignore_cache) = @_;
2233: return if (($domain eq '') || ($domain eq 'public'));
2234: my $cachetime = 60*60*24;
2235: unless ($ignore_cache) {
2236: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2237: if (defined($cached)) {
2238: if (ref($result) eq 'HASH') {
2239: return %{$result};
2240: }
2241: }
2242: }
2243: my %domdefaults;
2244: my %domconfig =
2245: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2246: 'requestcourses','inststatus',
2247: 'coursedefaults','usersessions',
2248: 'requestauthor','selfenrollment',
2249: 'coursecategories','ssl','autoenroll',
2250: 'trust','helpsettings'],$domain);
2251: my @coursetypes = ('official','unofficial','community','textbook','placement');
2252: if (ref($domconfig{'defaults'}) eq 'HASH') {
2253: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2254: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2255: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2256: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2257: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2258: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2259: } else {
2260: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2261: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2262: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2263: }
2264: if (ref($domconfig{'quotas'}) eq 'HASH') {
2265: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2266: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2267: } else {
2268: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2269: }
2270: my @usertools = ('aboutme','blog','webdav','portfolio');
2271: foreach my $item (@usertools) {
2272: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2273: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2274: }
2275: }
2276: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2277: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2278: }
2279: }
2280: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2281: foreach my $item ('official','unofficial','community','textbook','placement') {
2282: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2283: }
2284: }
2285: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2286: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2287: }
2288: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2289: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2290: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2291: }
2292: }
2293: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2294: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2295: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2296: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2297: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2298: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2299: }
2300: foreach my $type (@coursetypes) {
2301: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2302: unless ($type eq 'community') {
2303: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2304: }
2305: }
2306: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2307: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2308: }
2309: if ($domdefaults{'postsubmit'} eq 'on') {
2310: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2311: $domdefaults{$type.'postsubtimeout'} =
2312: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2313: }
2314: }
2315: }
2316: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2317: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2318: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2319: if (@clonecodes) {
2320: $domdefaults{'canclone'} = join('+',@clonecodes);
2321: }
2322: }
2323: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2324: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2325: }
2326: }
2327: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2328: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2329: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2330: }
2331: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2332: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2333: }
2334: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2335: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2336: }
2337: }
2338: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2339: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2340: my @settings = ('types','registered','enroll_dates','access_dates','section',
2341: 'approval','limit');
2342: foreach my $type (@coursetypes) {
2343: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2344: my @mgrdc = ();
2345: foreach my $item (@settings) {
2346: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2347: push(@mgrdc,$item);
2348: }
2349: }
2350: if (@mgrdc) {
2351: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2352: }
2353: }
2354: }
2355: }
2356: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2357: foreach my $type (@coursetypes) {
2358: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2359: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2360: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2361: }
2362: }
2363: }
2364: }
2365: }
2366: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2367: $domdefaults{'catauth'} = 'std';
2368: $domdefaults{'catunauth'} = 'std';
2369: if ($domconfig{'coursecategories'}{'auth'}) {
2370: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2371: }
2372: if ($domconfig{'coursecategories'}{'unauth'}) {
2373: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2374: }
2375: }
2376: if (ref($domconfig{'ssl'}) eq 'HASH') {
2377: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2378: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2379: }
2380: if (ref($domconfig{'ssl'}{'connect'}) eq 'HASH') {
2381: $domdefaults{'connect'} = $domconfig{'ssl'}{'connect'};
2382: }
2383: }
2384: if (ref($domconfig{'trust'}) eq 'HASH') {
2385: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2386: foreach my $prefix (@prefixes) {
2387: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2388: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2389: }
2390: }
2391: }
2392: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2393: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2394: }
2395: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2396: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2397: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2398: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2399: }
2400: }
2401: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2402: return %domdefaults;
2403: }
2404:
2405: sub course_portal_url {
2406: my ($cnum,$cdom) = @_;
2407: my $chome = &homeserver($cnum,$cdom);
2408: my $hostname = &hostname($chome);
2409: my $protocol = $protocol{$chome};
2410: $protocol = 'http' if ($protocol ne 'https');
2411: my %domdefaults = &get_domain_defaults($cdom);
2412: my $firsturl;
2413: if ($domdefaults{'portal_def'}) {
2414: $firsturl = $domdefaults{'portal_def'};
2415: } else {
2416: $firsturl = $protocol.'://'.$hostname;
2417: }
2418: return $firsturl;
2419: }
2420:
2421: # --------------------------------------------------- Assign a key to a student
2422:
2423: sub assign_access_key {
2424: #
2425: # a valid key looks like uname:udom#comments
2426: # comments are being appended
2427: #
2428: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2429: $kdom=
2430: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2431: $knum=
2432: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2433: $cdom=
2434: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2435: $cnum=
2436: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2437: $udom=$env{'user.name'} unless (defined($udom));
2438: $uname=$env{'user.domain'} unless (defined($uname));
2439: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2440: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2441: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2442: # assigned to this person
2443: # - this should not happen,
2444: # unless something went wrong
2445: # the first time around
2446: # ready to assign
2447: $logentry=$1.'; '.$logentry;
2448: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2449: $kdom,$knum) eq 'ok') {
2450: # key now belongs to user
2451: my $envkey='key.'.$cdom.'_'.$cnum;
2452: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2453: &appenv({'environment.'.$envkey => $ckey});
2454: return 'ok';
2455: } else {
2456: return
2457: 'error: Count not permanently assign key, will need to be re-entered later.';
2458: }
2459: } else {
2460: return 'error: Could not assign key, try again later.';
2461: }
2462: } elsif (!$existing{$ckey}) {
2463: # the key does not exist
2464: return 'error: The key does not exist';
2465: } else {
2466: # the key is somebody else's
2467: return 'error: The key is already in use';
2468: }
2469: }
2470:
2471: # ------------------------------------------ put an additional comment on a key
2472:
2473: sub comment_access_key {
2474: #
2475: # a valid key looks like uname:udom#comments
2476: # comments are being appended
2477: #
2478: my ($ckey,$cdom,$cnum,$logentry)=@_;
2479: $cdom=
2480: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2481: $cnum=
2482: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2483: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2484: if ($existing{$ckey}) {
2485: $existing{$ckey}.='; '.$logentry;
2486: # ready to assign
2487: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2488: $cdom,$cnum) eq 'ok') {
2489: return 'ok';
2490: } else {
2491: return 'error: Count not store comment.';
2492: }
2493: } else {
2494: # the key does not exist
2495: return 'error: The key does not exist';
2496: }
2497: }
2498:
2499: # ------------------------------------------------------ Generate a set of keys
2500:
2501: sub generate_access_keys {
2502: my ($number,$cdom,$cnum,$logentry)=@_;
2503: $cdom=
2504: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2505: $cnum=
2506: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2507: unless (&allowed('mky',$cdom)) { return 0; }
2508: unless (($cdom) && ($cnum)) { return 0; }
2509: if ($number>10000) { return 0; }
2510: sleep(2); # make sure don't get same seed twice
2511: srand(time()^($$+($$<<15))); # from "Programming Perl"
2512: my $total=0;
2513: for (my $i=1;$i<=$number;$i++) {
2514: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2515: sprintf("%lx",int(100000*rand)).'-'.
2516: sprintf("%lx",int(100000*rand));
2517: $newkey=~s/1/g/g; # folks mix up 1 and l
2518: $newkey=~s/0/h/g; # and also 0 and O
2519: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2520: if ($existing{$newkey}) {
2521: $i--;
2522: } else {
2523: if (&put('accesskeys',
2524: { $newkey => '# generated '.localtime().
2525: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2526: '; '.$logentry },
2527: $cdom,$cnum) eq 'ok') {
2528: $total++;
2529: }
2530: }
2531: }
2532: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2533: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2534: return $total;
2535: }
2536:
2537: # ------------------------------------------------------- Validate an accesskey
2538:
2539: sub validate_access_key {
2540: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2541: $cdom=
2542: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2543: $cnum=
2544: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2545: $udom=$env{'user.domain'} unless (defined($udom));
2546: $uname=$env{'user.name'} unless (defined($uname));
2547: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2548: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2549: }
2550:
2551: # ------------------------------------- Find the section of student in a course
2552: sub devalidate_getsection_cache {
2553: my ($udom,$unam,$courseid)=@_;
2554: my $hashid="$udom:$unam:$courseid";
2555: &devalidate_cache_new('getsection',$hashid);
2556: }
2557:
2558: sub courseid_to_courseurl {
2559: my ($courseid) = @_;
2560: #already url style courseid
2561: return $courseid if ($courseid =~ m{^/});
2562:
2563: if (exists($env{'course.'.$courseid.'.num'})) {
2564: my $cnum = $env{'course.'.$courseid.'.num'};
2565: my $cdom = $env{'course.'.$courseid.'.domain'};
2566: return "/$cdom/$cnum";
2567: }
2568:
2569: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2570: if (exists($courseinfo{'num'})) {
2571: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2572: }
2573:
2574: return undef;
2575: }
2576:
2577: sub getsection {
2578: my ($udom,$unam,$courseid)=@_;
2579: my $cachetime=1800;
2580:
2581: my $hashid="$udom:$unam:$courseid";
2582: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2583: if (defined($cached)) { return $result; }
2584:
2585: my %Pending;
2586: my %Expired;
2587: #
2588: # Each role can either have not started yet (pending), be active,
2589: # or have expired.
2590: #
2591: # If there is an active role, we are done.
2592: #
2593: # If there is more than one role which has not started yet,
2594: # choose the one which will start sooner
2595: # If there is one role which has not started yet, return it.
2596: #
2597: # If there is more than one expired role, choose the one which ended last.
2598: # If there is a role which has expired, return it.
2599: #
2600: $courseid = &courseid_to_courseurl($courseid);
2601: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2602: foreach my $key (keys(%roleshash)) {
2603: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2604: my $section=$1;
2605: if ($key eq $courseid.'_st') { $section=''; }
2606: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2607: my $now=time;
2608: if (defined($end) && $end && ($now > $end)) {
2609: $Expired{$end}=$section;
2610: next;
2611: }
2612: if (defined($start) && $start && ($now < $start)) {
2613: $Pending{$start}=$section;
2614: next;
2615: }
2616: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2617: }
2618: #
2619: # Presumedly there will be few matching roles from the above
2620: # loop and the sorting time will be negligible.
2621: if (scalar(keys(%Pending))) {
2622: my ($time) = sort {$a <=> $b} keys(%Pending);
2623: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2624: }
2625: if (scalar(keys(%Expired))) {
2626: my @sorted = sort {$a <=> $b} keys(%Expired);
2627: my $time = pop(@sorted);
2628: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2629: }
2630: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2631: }
2632:
2633: sub save_cache {
2634: &purge_remembered();
2635: #&Apache::loncommon::validate_page();
2636: undef(%env);
2637: undef($env_loaded);
2638: }
2639:
2640: my $to_remember=-1;
2641: my %remembered;
2642: my %accessed;
2643: my $kicks=0;
2644: my $hits=0;
2645: sub make_key {
2646: my ($name,$id) = @_;
2647: if (length($id) > 65
2648: && length(&escape($id)) > 200) {
2649: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2650: }
2651: return &escape($name.':'.$id);
2652: }
2653:
2654: sub devalidate_cache_new {
2655: my ($name,$id,$debug) = @_;
2656: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2657: my $remembered_id=$name.':'.$id;
2658: $id=&make_key($name,$id);
2659: $memcache->delete($id);
2660: delete($remembered{$remembered_id});
2661: delete($accessed{$remembered_id});
2662: }
2663:
2664: sub is_cached_new {
2665: my ($name,$id,$debug) = @_;
2666: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2667: if (exists($remembered{$remembered_id})) {
2668: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2669: $accessed{$remembered_id}=[&gettimeofday()];
2670: $hits++;
2671: return ($remembered{$remembered_id},1);
2672: }
2673: $id=&make_key($name,$id);
2674: my $value = $memcache->get($id);
2675: if (!(defined($value))) {
2676: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2677: return (undef,undef);
2678: }
2679: if ($value eq '__undef__') {
2680: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2681: $value=undef;
2682: }
2683: &make_room($remembered_id,$value,$debug);
2684: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2685: return ($value,1);
2686: }
2687:
2688: sub do_cache_new {
2689: my ($name,$id,$value,$time,$debug) = @_;
2690: my $remembered_id=$name.':'.$id;
2691: $id=&make_key($name,$id);
2692: my $setvalue=$value;
2693: if (!defined($setvalue)) {
2694: $setvalue='__undef__';
2695: }
2696: if (!defined($time) ) {
2697: $time=600;
2698: }
2699: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2700: my $result = $memcache->set($id,$setvalue,$time);
2701: if (! $result) {
2702: &logthis("caching of id -> $id failed");
2703: $memcache->disconnect_all();
2704: }
2705: # need to make a copy of $value
2706: &make_room($remembered_id,$value,$debug);
2707: return $value;
2708: }
2709:
2710: sub make_room {
2711: my ($remembered_id,$value,$debug)=@_;
2712:
2713: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2714: : $value;
2715: if ($to_remember<0) { return; }
2716: $accessed{$remembered_id}=[&gettimeofday()];
2717: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2718: my $to_kick;
2719: my $max_time=0;
2720: foreach my $other (keys(%accessed)) {
2721: if (&tv_interval($accessed{$other}) > $max_time) {
2722: $to_kick=$other;
2723: $max_time=&tv_interval($accessed{$other});
2724: }
2725: }
2726: delete($remembered{$to_kick});
2727: delete($accessed{$to_kick});
2728: $kicks++;
2729: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2730: return;
2731: }
2732:
2733: sub purge_remembered {
2734: #&logthis("Tossing ".scalar(keys(%remembered)));
2735: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2736: undef(%remembered);
2737: undef(%accessed);
2738: }
2739: # ------------------------------------- Read an entry from a user's environment
2740:
2741: sub userenvironment {
2742: my ($udom,$unam,@what)=@_;
2743: my $items;
2744: foreach my $item (@what) {
2745: $items.=&escape($item).'&';
2746: }
2747: $items=~s/\&$//;
2748: my %returnhash=();
2749: my $uhome = &homeserver($unam,$udom);
2750: unless ($uhome eq 'no_host') {
2751: my @answer=split(/\&/,
2752: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2753: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2754: return %returnhash;
2755: }
2756: my $i;
2757: for ($i=0;$i<=$#what;$i++) {
2758: $returnhash{$what[$i]}=&unescape($answer[$i]);
2759: }
2760: }
2761: return %returnhash;
2762: }
2763:
2764: # ---------------------------------------------------------- Get a studentphoto
2765: sub studentphoto {
2766: my ($udom,$unam,$ext) = @_;
2767: my $home=&Apache::lonnet::homeserver($unam,$udom);
2768: if (defined($env{'request.course.id'})) {
2769: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2770: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2771: return(&retrievestudentphoto($udom,$unam,$ext));
2772: } else {
2773: my ($result,$perm_reqd)=
2774: &Apache::lonnet::auto_photo_permission($unam,$udom);
2775: if ($result eq 'ok') {
2776: if (!($perm_reqd eq 'yes')) {
2777: return(&retrievestudentphoto($udom,$unam,$ext));
2778: }
2779: }
2780: }
2781: }
2782: } else {
2783: my ($result,$perm_reqd) =
2784: &Apache::lonnet::auto_photo_permission($unam,$udom);
2785: if ($result eq 'ok') {
2786: if (!($perm_reqd eq 'yes')) {
2787: return(&retrievestudentphoto($udom,$unam,$ext));
2788: }
2789: }
2790: }
2791: return '/adm/lonKaputt/lonlogo_broken.gif';
2792: }
2793:
2794: sub retrievestudentphoto {
2795: my ($udom,$unam,$ext,$type) = @_;
2796: my $home=&Apache::lonnet::homeserver($unam,$udom);
2797: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2798: if ($ret eq 'ok') {
2799: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2800: if ($type eq 'thumbnail') {
2801: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2802: }
2803: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2804: return $tokenurl;
2805: } else {
2806: if ($type eq 'thumbnail') {
2807: return '/adm/lonKaputt/genericstudent_tn.gif';
2808: } else {
2809: return '/adm/lonKaputt/lonlogo_broken.gif';
2810: }
2811: }
2812: }
2813:
2814: # -------------------------------------------------------------------- New chat
2815:
2816: sub chatsend {
2817: my ($newentry,$anon,$group)=@_;
2818: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2819: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2820: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2821: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2822: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2823: &escape($newentry)).':'.$group,$chome);
2824: }
2825:
2826: # ------------------------------------------ Find current version of a resource
2827:
2828: sub getversion {
2829: my $fname=&clutter(shift);
2830: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2831: return ¤tversion(&filelocation('',$fname));
2832: }
2833:
2834: sub currentversion {
2835: my $fname=shift;
2836: my $author=$fname;
2837: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2838: my ($udom,$uname)=split(/\//,$author);
2839: my $home=&homeserver($uname,$udom);
2840: if ($home eq 'no_host') {
2841: return -1;
2842: }
2843: my $answer=&reply("currentversion:$fname",$home);
2844: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2845: return -1;
2846: }
2847: return $answer;
2848: }
2849:
2850: #
2851: # Return special version number of resource if set by override, empty otherwise
2852: #
2853: sub usedversion {
2854: my $fname=shift;
2855: unless ($fname) { $fname=$env{'request.uri'}; }
2856: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2857: if ($urlversion) { return $urlversion; }
2858: return '';
2859: }
2860:
2861: # ----------------------------- Subscribe to a resource, return URL if possible
2862:
2863: sub subscribe {
2864: my $fname=shift;
2865: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2866: $fname=~s/[\n\r]//g;
2867: my $author=$fname;
2868: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2869: my ($udom,$uname)=split(/\//,$author);
2870: my $home=homeserver($uname,$udom);
2871: if ($home eq 'no_host') {
2872: return 'not_found';
2873: }
2874: my $answer=reply("sub:$fname",$home);
2875: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2876: $answer.=' by '.$home;
2877: }
2878: return $answer;
2879: }
2880:
2881: # -------------------------------------------------------------- Replicate file
2882:
2883: sub repcopy {
2884: my $filename=shift;
2885: $filename=~s/\/+/\//g;
2886: my $londocroot = $perlvar{'lonDocRoot'};
2887: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2888: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2889: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2890: $filename=~m{^/*(uploaded|editupload)/}) {
2891: return &repcopy_userfile($filename);
2892: }
2893: $filename=~s/[\n\r]//g;
2894: my $transname="$filename.in.transfer";
2895: # FIXME: this should flock
2896: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2897: my $remoteurl=subscribe($filename);
2898: if ($remoteurl =~ /^con_lost by/) {
2899: &logthis("Subscribe returned $remoteurl: $filename");
2900: return 'unavailable';
2901: } elsif ($remoteurl eq 'not_found') {
2902: #&logthis("Subscribe returned not_found: $filename");
2903: return 'not_found';
2904: } elsif ($remoteurl =~ /^rejected by/) {
2905: &logthis("Subscribe returned $remoteurl: $filename");
2906: return 'forbidden';
2907: } elsif ($remoteurl eq 'directory') {
2908: return 'ok';
2909: } else {
2910: my $author=$filename;
2911: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2912: my ($udom,$uname)=split(/\//,$author);
2913: my $home=homeserver($uname,$udom);
2914: unless ($home eq $perlvar{'lonHostID'}) {
2915: my @parts=split(/\//,$filename);
2916: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2917: if ($path ne "$londocroot/res") {
2918: &logthis("Malconfiguration for replication: $filename");
2919: return 'bad_request';
2920: }
2921: my $count;
2922: for ($count=5;$count<$#parts;$count++) {
2923: $path.="/$parts[$count]";
2924: if ((-e $path)!=1) {
2925: mkdir($path,0777);
2926: }
2927: }
2928: my $ua=new LWP::UserAgent;
2929: my $request=new HTTP::Request('GET',"$remoteurl");
2930: my $response=$ua->request($request,$transname);
2931: if ($response->is_error()) {
2932: unlink($transname);
2933: my $message=$response->status_line;
2934: &logthis("<font color=\"blue\">WARNING:"
2935: ." LWP get: $message: $filename</font>");
2936: return 'unavailable';
2937: } else {
2938: if ($remoteurl!~/\.meta$/) {
2939: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2940: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2941: if ($mresponse->is_error()) {
2942: unlink($filename.'.meta');
2943: &logthis(
2944: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2945: }
2946: }
2947: rename($transname,$filename);
2948: return 'ok';
2949: }
2950: }
2951: }
2952: }
2953:
2954: # ------------------------------------------------ Get server side include body
2955: sub ssi_body {
2956: my ($filelink,%form)=@_;
2957: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2958: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2959: }
2960: my $output='';
2961: my $response;
2962: if ($filelink=~/^https?\:/) {
2963: ($output,$response)=&externalssi($filelink);
2964: } else {
2965: $filelink .= $filelink=~/\?/ ? '&' : '?';
2966: $filelink .= 'inhibitmenu=yes';
2967: ($output,$response)=&ssi($filelink,%form);
2968: }
2969: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2970: $output=~s/^.*?\<body[^\>]*\>//si;
2971: $output=~s/\<\/body\s*\>.*?$//si;
2972: if (wantarray) {
2973: return ($output, $response);
2974: } else {
2975: return $output;
2976: }
2977: }
2978:
2979: # --------------------------------------------------------- Server Side Include
2980:
2981: sub absolute_url {
2982: my ($host_name) = @_;
2983: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2984: if ($host_name eq '') {
2985: $host_name = $ENV{'SERVER_NAME'};
2986: }
2987: return $protocol.$host_name;
2988: }
2989:
2990: #
2991: # Server side include.
2992: # Parameters:
2993: # fn Possibly encrypted resource name/id.
2994: # form Hash that describes how the rendering should be done
2995: # and other things.
2996: # Returns:
2997: # Scalar context: The content of the response.
2998: # Array context: 2 element list of the content and the full response object.
2999: #
3000: sub ssi {
3001:
3002: my ($fn,%form)=@_;
3003: my $ua=new LWP::UserAgent;
3004: my $request;
3005:
3006: $form{'no_update_last_known'}=1;
3007: &Apache::lonenc::check_encrypt(\$fn);
3008: if (%form) {
3009: $request=new HTTP::Request('POST',&absolute_url().$fn);
3010: $request->content(join('&',map {
3011: my $name = escape($_);
3012: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3013: ? join("&$name=", map {escape($_) } @{$form{$_}})
3014: : &escape($form{$_}) );
3015: } keys(%form)));
3016: } else {
3017: $request=new HTTP::Request('GET',&absolute_url().$fn);
3018: }
3019:
3020: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3021: my $response= $ua->request($request);
3022: my $content = $response->content;
3023:
3024:
3025: if (wantarray) {
3026: return ($content, $response);
3027: } else {
3028: return $content;
3029: }
3030: }
3031:
3032: sub externalssi {
3033: my ($url)=@_;
3034: my $ua=new LWP::UserAgent;
3035: my $request=new HTTP::Request('GET',$url);
3036: my $response=$ua->request($request);
3037: if (wantarray) {
3038: return ($response->content, $response);
3039: } else {
3040: return $response->content;
3041: }
3042: }
3043:
3044: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3045:
3046: sub allowuploaded {
3047: my ($srcurl,$url)=@_;
3048: $url=&clutter(&declutter($url));
3049: my $dir=$url;
3050: $dir=~s/\/[^\/]+$//;
3051: my %httpref=();
3052: my $httpurl=&hreflocation('',$url);
3053: $httpref{'httpref.'.$httpurl}=$srcurl;
3054: &Apache::lonnet::appenv(\%httpref);
3055: }
3056:
3057: #
3058: # Determine if the current user should be able to edit a particular resource,
3059: # when viewing in course context.
3060: # (a) When viewing resource used to determine if "Edit" item is included in
3061: # Functions.
3062: # (b) When displaying folder contents in course editor, used to determine if
3063: # "Edit" link will be displayed alongside resource.
3064: #
3065: # input: six args -- filename (decluttered), course number, course domain,
3066: # url, symb (if registered) and group (if this is a group
3067: # item -- e.g., bulletin board, group page etc.).
3068: # output: array of five scalars --
3069: # $cfile -- url for file editing if editable on current server
3070: # $home -- homeserver of resource (i.e., for author if published,
3071: # or course if uploaded.).
3072: # $switchserver -- 1 if server switch will be needed.
3073: # $forceedit -- 1 if icon/link should be to go to edit mode
3074: # $forceview -- 1 if icon/link should be to go to view mode
3075: #
3076:
3077: sub can_edit_resource {
3078: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3079: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3080: #
3081: # For aboutme pages user can only edit his/her own.
3082: #
3083: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3084: my ($sdom,$sname) = ($1,$2);
3085: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3086: $home = $env{'user.home'};
3087: $cfile = $resurl;
3088: if ($env{'form.forceedit'}) {
3089: $forceview = 1;
3090: } else {
3091: $forceedit = 1;
3092: }
3093: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3094: } else {
3095: return;
3096: }
3097: }
3098:
3099: if ($env{'request.course.id'}) {
3100: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3101: if ($group ne '') {
3102: # if this is a group homepage or group bulletin board, check group privs
3103: my $allowed = 0;
3104: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3105: if ((&allowed('mdg',$env{'request.course.id'}.
3106: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3107: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3108: $allowed = 1;
3109: }
3110: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3111: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3112: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3113: $allowed = 1;
3114: }
3115: }
3116: if ($allowed) {
3117: $home=&homeserver($cnum,$cdom);
3118: if ($env{'form.forceedit'}) {
3119: $forceview = 1;
3120: } else {
3121: $forceedit = 1;
3122: }
3123: $cfile = $resurl;
3124: } else {
3125: return;
3126: }
3127: } else {
3128: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3129: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3130: return;
3131: }
3132: } elsif (!$crsedit) {
3133: #
3134: # No edit allowed where CC has switched to student role.
3135: #
3136: return;
3137: }
3138: }
3139: }
3140:
3141: if ($file ne '') {
3142: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3143: if (&is_course_upload($file,$cnum,$cdom)) {
3144: $uploaded = 1;
3145: $incourse = 1;
3146: if ($file =~/\.(htm|html|css|js|txt)$/) {
3147: $cfile = &hreflocation('',$file);
3148: if ($env{'form.forceedit'}) {
3149: $forceview = 1;
3150: } else {
3151: $forceedit = 1;
3152: }
3153: }
3154: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3155: $incourse = 1;
3156: if ($env{'form.forceedit'}) {
3157: $forceview = 1;
3158: } else {
3159: $forceedit = 1;
3160: }
3161: $cfile = $resurl;
3162: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3163: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3164: $incourse = 1;
3165: if ($env{'form.forceedit'}) {
3166: $forceview = 1;
3167: } else {
3168: $forceedit = 1;
3169: }
3170: $cfile = $resurl;
3171: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3172: $incourse = 1;
3173: $cfile = $resurl.'/smpedit';
3174: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3175: $incourse = 1;
3176: if ($env{'form.forceedit'}) {
3177: $forceview = 1;
3178: } else {
3179: $forceedit = 1;
3180: }
3181: $cfile = $resurl;
3182: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) {
3183: $incourse = 1;
3184: if ($env{'form.forceedit'}) {
3185: $forceview = 1;
3186: } else {
3187: $forceedit = 1;
3188: }
3189: $cfile = $resurl;
3190: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3191: $incourse = 1;
3192: if ($env{'form.forceedit'}) {
3193: $forceview = 1;
3194: } else {
3195: $forceedit = 1;
3196: }
3197: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3198: }
3199: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3200: my $template = '/res/lib/templates/simpleproblem.problem';
3201: if (&is_on_map($template)) {
3202: $incourse = 1;
3203: $forceview = 1;
3204: $cfile = $template;
3205: }
3206: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3207: $incourse = 1;
3208: if ($env{'form.forceedit'}) {
3209: $forceview = 1;
3210: } else {
3211: $forceedit = 1;
3212: }
3213: $cfile = $resurl;
3214: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3215: $incourse = 1;
3216: if ($env{'form.forceedit'}) {
3217: $forceview = 1;
3218: } else {
3219: $forceedit = 1;
3220: }
3221: $cfile = $resurl;
3222: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3223: $incourse = 1;
3224: $forceview = 1;
3225: if ($symb) {
3226: my ($map,$id,$res)=&decode_symb($symb);
3227: $env{'request.symb'} = $symb;
3228: $cfile = &clutter($res);
3229: } else {
3230: $cfile = $env{'form.suppurl'};
3231: my $escfile = &unescape($cfile);
3232: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/exttools?$}) {
3233: $cfile = '/adm/wrapper'.$escfile;
3234: } else {
3235: $escfile =~ s{^http://}{};
3236: $cfile = &escape("/adm/wrapper/ext/$escfile");
3237: }
3238: }
3239: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3240: if ($env{'form.forceedit'}) {
3241: $forceview = 1;
3242: } else {
3243: $forceedit = 1;
3244: }
3245: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3246: }
3247: }
3248: if ($uploaded || $incourse) {
3249: $home=&homeserver($cnum,$cdom);
3250: } elsif ($file !~ m{/$}) {
3251: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3252: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3253: # Check that the user has permission to edit this resource
3254: my $setpriv = 1;
3255: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3256: if (defined($cfudom)) {
3257: $home=&homeserver($cfuname,$cfudom);
3258: $cfile=$file;
3259: }
3260: }
3261: if (($cfile ne '') && (!$incourse || $uploaded) &&
3262: (($home ne '') && ($home ne 'no_host'))) {
3263: my @ids=¤t_machine_ids();
3264: unless (grep(/^\Q$home\E$/,@ids)) {
3265: $switchserver=1;
3266: }
3267: }
3268: }
3269: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3270: }
3271:
3272: sub is_course_upload {
3273: my ($file,$cnum,$cdom) = @_;
3274: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3275: $uploadpath =~ s{^\/}{};
3276: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3277: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3278: return 1;
3279: }
3280: return;
3281: }
3282:
3283: sub in_course {
3284: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3285: if ($hideprivileged) {
3286: my $skipuser;
3287: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3288: my @possdoms = ($cdom);
3289: if ($coursehash{'checkforpriv'}) {
3290: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3291: }
3292: if (&privileged($uname,$udom,\@possdoms)) {
3293: $skipuser = 1;
3294: if ($coursehash{'nothideprivileged'}) {
3295: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3296: my $user;
3297: if ($item =~ /:/) {
3298: $user = $item;
3299: } else {
3300: $user = join(':',split(/[\@]/,$item));
3301: }
3302: if ($user eq $uname.':'.$udom) {
3303: undef($skipuser);
3304: last;
3305: }
3306: }
3307: }
3308: if ($skipuser) {
3309: return 0;
3310: }
3311: }
3312: }
3313: $type ||= 'any';
3314: if (!defined($cdom) || !defined($cnum)) {
3315: my $cid = $env{'request.course.id'};
3316: $cdom = $env{'course.'.$cid.'.domain'};
3317: $cnum = $env{'course.'.$cid.'.num'};
3318: }
3319: my $typesref;
3320: if (($type eq 'any') || ($type eq 'all')) {
3321: $typesref = ['active','previous','future'];
3322: } elsif ($type eq 'previous' || $type eq 'future') {
3323: $typesref = [$type];
3324: }
3325: my %roles = &get_my_roles($uname,$udom,'userroles',
3326: $typesref,undef,[$cdom]);
3327: my ($tmp) = keys(%roles);
3328: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3329: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3330: if (@course_roles > 0) {
3331: return 1;
3332: }
3333: return 0;
3334: }
3335:
3336: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3337: # input: action, courseID, current domain, intended
3338: # path to file, source of file, instruction to parse file for objects,
3339: # ref to hash for embedded objects,
3340: # ref to hash for codebase of java objects.
3341: # reference to scalar to accommodate mime type determined
3342: # from File::MMagic if $parser = parse.
3343: #
3344: # output: url to file (if action was uploaddoc),
3345: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3346: #
3347: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3348: # course.
3349: #
3350: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3351: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3352: # course's home server.
3353: #
3354: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3355: # be copied from $source (current location) to
3356: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3357: # and will then be copied to
3358: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3359: # course's home server.
3360: #
3361: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3362: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3363: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3364: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3365: # in course's home server.
3366: #
3367:
3368: sub process_coursefile {
3369: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3370: $mimetype)=@_;
3371: my $fetchresult;
3372: my $home=&homeserver($docuname,$docudom);
3373: if ($action eq 'propagate') {
3374: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3375: $home);
3376: } else {
3377: my $fpath = '';
3378: my $fname = $file;
3379: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3380: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3381: my $filepath = &build_filepath($fpath);
3382: if ($action eq 'copy') {
3383: if ($source eq '') {
3384: $fetchresult = 'no source file';
3385: return $fetchresult;
3386: } else {
3387: my $destination = $filepath.'/'.$fname;
3388: rename($source,$destination);
3389: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3390: $home);
3391: }
3392: } elsif ($action eq 'uploaddoc') {
3393: open(my $fh,'>'.$filepath.'/'.$fname);
3394: print $fh $env{'form.'.$source};
3395: close($fh);
3396: if ($parser eq 'parse') {
3397: my $mm = new File::MMagic;
3398: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3399: if ($type eq 'text/html') {
3400: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3401: unless ($parse_result eq 'ok') {
3402: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3403: }
3404: }
3405: if (ref($mimetype)) {
3406: $$mimetype = $type;
3407: }
3408: }
3409: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3410: $home);
3411: if ($fetchresult eq 'ok') {
3412: return '/uploaded/'.$fpath.'/'.$fname;
3413: } else {
3414: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3415: ' to host '.$home.': '.$fetchresult);
3416: return '/adm/notfound.html';
3417: }
3418: }
3419: }
3420: unless ( $fetchresult eq 'ok') {
3421: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3422: ' to host '.$home.': '.$fetchresult);
3423: }
3424: return $fetchresult;
3425: }
3426:
3427: sub build_filepath {
3428: my ($fpath) = @_;
3429: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3430: unless ($fpath eq '') {
3431: my @parts=split('/',$fpath);
3432: foreach my $part (@parts) {
3433: $filepath.= '/'.$part;
3434: if ((-e $filepath)!=1) {
3435: mkdir($filepath,0777);
3436: }
3437: }
3438: }
3439: return $filepath;
3440: }
3441:
3442: sub store_edited_file {
3443: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3444: my $file = $primary_url;
3445: $file =~ s#^/uploaded/$docudom/$docuname/##;
3446: my $fpath = '';
3447: my $fname = $file;
3448: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3449: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3450: my $filepath = &build_filepath($fpath);
3451: open(my $fh,'>'.$filepath.'/'.$fname);
3452: print $fh $content;
3453: close($fh);
3454: my $home=&homeserver($docuname,$docudom);
3455: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3456: $home);
3457: if ($$fetchresult eq 'ok') {
3458: return '/uploaded/'.$fpath.'/'.$fname;
3459: } else {
3460: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3461: ' to host '.$home.': '.$$fetchresult);
3462: return '/adm/notfound.html';
3463: }
3464: }
3465:
3466: sub clean_filename {
3467: my ($fname,$args)=@_;
3468: # Replace Windows backslashes by forward slashes
3469: $fname=~s/\\/\//g;
3470: if (!$args->{'keep_path'}) {
3471: # Get rid of everything but the actual filename
3472: $fname=~s/^.*\/([^\/]+)$/$1/;
3473: }
3474: # Replace spaces by underscores
3475: $fname=~s/\s+/\_/g;
3476: # Replace all other weird characters by nothing
3477: $fname=~s{[^/\w\.\-]}{}g;
3478: # Replace all .\d. sequences with _\d. so they no longer look like version
3479: # numbers
3480: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3481: return $fname;
3482: }
3483: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3484: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3485: # image with the same aspect ratio as the original, but with dimensions which do
3486: # not exceed $resizewidth and $resizeheight.
3487:
3488: sub resizeImage {
3489: my ($img_path,$resizewidth,$resizeheight) = @_;
3490: my $ima = Image::Magick->new;
3491: my $resized;
3492: if (-e $img_path) {
3493: $ima->Read($img_path);
3494: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3495: my $width = $ima->Get('width');
3496: my $height = $ima->Get('height');
3497: if ($width > $resizewidth) {
3498: my $factor = $width/$resizewidth;
3499: my $newheight = $height/$factor;
3500: $ima->Scale(width=>$resizewidth,height=>$newheight);
3501: $resized = 1;
3502: }
3503: }
3504: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3505: my $width = $ima->Get('width');
3506: my $height = $ima->Get('height');
3507: if ($height > $resizeheight) {
3508: my $factor = $height/$resizeheight;
3509: my $newwidth = $width/$factor;
3510: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3511: $resized = 1;
3512: }
3513: }
3514: if ($resized) {
3515: $ima->Write($img_path);
3516: }
3517: }
3518: return;
3519: }
3520:
3521: # --------------- Take an uploaded file and put it into the userfiles directory
3522: # input: $formname - the contents of the file are in $env{"form.$formname"}
3523: # the desired filename is in $env{"form.$formname.filename"}
3524: # $context - possible values: coursedoc, existingfile, overwrite,
3525: # canceloverwrite, or ''.
3526: # if 'coursedoc': upload to the current course
3527: # if 'existingfile': write file to tmp/overwrites directory
3528: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3529: # $context is passed as argument to &finishuserfileupload
3530: # $subdir - directory in userfile to store the file into
3531: # $parser - instruction to parse file for objects ($parser = parse)
3532: # $allfiles - reference to hash for embedded objects
3533: # $codebase - reference to hash for codebase of java objects
3534: # $desuname - username for permanent storage of uploaded file
3535: # $dsetudom - domain for permanaent storage of uploaded file
3536: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3537: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3538: # $resizewidth - width (pixels) to which to resize uploaded image
3539: # $resizeheight - height (pixels) to which to resize uploaded image
3540: # $mimetype - reference to scalar to accommodate mime type determined
3541: # from File::MMagic.
3542: #
3543: # output: url of file in userspace, or error: <message>
3544: # or /adm/notfound.html if failure to upload occurse
3545:
3546: sub userfileupload {
3547: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3548: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3549: if (!defined($subdir)) { $subdir='unknown'; }
3550: my $fname=$env{'form.'.$formname.'.filename'};
3551: $fname=&clean_filename($fname);
3552: # See if there is anything left
3553: unless ($fname) { return 'error: no uploaded file'; }
3554: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3555: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3556: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3557: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3558: my $now = time;
3559: my $filepath;
3560: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3561: $filepath = 'tmp/helprequests/'.$now;
3562: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3563: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3564: '_'.$env{'user.domain'}.'/pending';
3565: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3566: my ($docuname,$docudom);
3567: if ($destudom) {
3568: $docudom = $destudom;
3569: } else {
3570: $docudom = $env{'user.domain'};
3571: }
3572: if ($destuname) {
3573: $docuname = $destuname;
3574: } else {
3575: $docuname = $env{'user.name'};
3576: }
3577: if (exists($env{'form.group'})) {
3578: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3579: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3580: }
3581: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3582: if ($context eq 'canceloverwrite') {
3583: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3584: if (-e $tempfile) {
3585: my @info = stat($tempfile);
3586: if ($info[9] eq $env{'form.timestamp'}) {
3587: unlink($tempfile);
3588: }
3589: }
3590: return;
3591: }
3592: }
3593: # Create the directory if not present
3594: my @parts=split(/\//,$filepath);
3595: my $fullpath = $perlvar{'lonDaemons'};
3596: for (my $i=0;$i<@parts;$i++) {
3597: $fullpath .= '/'.$parts[$i];
3598: if ((-e $fullpath)!=1) {
3599: mkdir($fullpath,0777);
3600: }
3601: }
3602: open(my $fh,'>'.$fullpath.'/'.$fname);
3603: print $fh $env{'form.'.$formname};
3604: close($fh);
3605: if ($context eq 'existingfile') {
3606: my @info = stat($fullpath.'/'.$fname);
3607: return ($fullpath.'/'.$fname,$info[9]);
3608: } else {
3609: return $fullpath.'/'.$fname;
3610: }
3611: }
3612: if ($subdir eq 'scantron') {
3613: $fname = 'scantron_orig_'.$fname;
3614: } else {
3615: $fname="$subdir/$fname";
3616: }
3617: if ($context eq 'coursedoc') {
3618: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3619: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3620: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3621: return &finishuserfileupload($docuname,$docudom,
3622: $formname,$fname,$parser,$allfiles,
3623: $codebase,$thumbwidth,$thumbheight,
3624: $resizewidth,$resizeheight,$context,$mimetype);
3625: } else {
3626: if ($env{'form.folder'}) {
3627: $fname=$env{'form.folder'}.'/'.$fname;
3628: }
3629: return &process_coursefile('uploaddoc',$docuname,$docudom,
3630: $fname,$formname,$parser,
3631: $allfiles,$codebase,$mimetype);
3632: }
3633: } elsif (defined($destuname)) {
3634: my $docuname=$destuname;
3635: my $docudom=$destudom;
3636: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3637: $parser,$allfiles,$codebase,
3638: $thumbwidth,$thumbheight,
3639: $resizewidth,$resizeheight,$context,$mimetype);
3640: } else {
3641: my $docuname=$env{'user.name'};
3642: my $docudom=$env{'user.domain'};
3643: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3644: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3645: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3646: }
3647: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3648: $parser,$allfiles,$codebase,
3649: $thumbwidth,$thumbheight,
3650: $resizewidth,$resizeheight,$context,$mimetype);
3651: }
3652: }
3653:
3654: sub finishuserfileupload {
3655: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3656: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3657: my $path=$docudom.'/'.$docuname.'/';
3658: my $filepath=$perlvar{'lonDocRoot'};
3659:
3660: my ($fnamepath,$file,$fetchthumb);
3661: $file=$fname;
3662: if ($fname=~m|/|) {
3663: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3664: $path.=$fnamepath.'/';
3665: }
3666: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3667: my $count;
3668: for ($count=4;$count<=$#parts;$count++) {
3669: $filepath.="/$parts[$count]";
3670: if ((-e $filepath)!=1) {
3671: mkdir($filepath,0777);
3672: }
3673: }
3674:
3675: # Save the file
3676: {
3677: if (!open(FH,'>'.$filepath.'/'.$file)) {
3678: &logthis('Failed to create '.$filepath.'/'.$file);
3679: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3680: return '/adm/notfound.html';
3681: }
3682: if ($context eq 'overwrite') {
3683: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3684: my $target = $filepath.'/'.$file;
3685: if (-e $source) {
3686: my @info = stat($source);
3687: if ($info[9] eq $env{'form.timestamp'}) {
3688: unless (&File::Copy::move($source,$target)) {
3689: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3690: return "Moving from $source failed";
3691: }
3692: } else {
3693: return "Temporary file: $source had unexpected date/time for last modification";
3694: }
3695: } else {
3696: return "Temporary file: $source missing";
3697: }
3698: } elsif (!print FH ($env{'form.'.$formname})) {
3699: &logthis('Failed to write to '.$filepath.'/'.$file);
3700: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3701: return '/adm/notfound.html';
3702: }
3703: close(FH);
3704: if ($resizewidth && $resizeheight) {
3705: my $mm = new File::MMagic;
3706: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3707: if ($mime_type =~ m{^image/}) {
3708: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3709: }
3710: }
3711: }
3712: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3713: if (ref($mimetype)) {
3714: if ($$mimetype eq '') {
3715: my $mm = new File::MMagic;
3716: my $type = $mm->checktype_filename($filepath.'/'.$file);
3717: $$mimetype = $type;
3718: }
3719: }
3720: }
3721: if ($parser eq 'parse') {
3722: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3723: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3724: $allfiles,$codebase);
3725: unless ($parse_result eq 'ok') {
3726: &logthis('Failed to parse '.$filepath.$file.
3727: ' for embedded media: '.$parse_result);
3728: }
3729: }
3730: }
3731: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3732: my $input = $filepath.'/'.$file;
3733: my $output = $filepath.'/'.'tn-'.$file;
3734: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3735: system("convert -sample $thumbsize $input $output");
3736: if (-e $filepath.'/'.'tn-'.$file) {
3737: $fetchthumb = 1;
3738: }
3739: }
3740:
3741: # Notify homeserver to grep it
3742: #
3743: my $docuhome=&homeserver($docuname,$docudom);
3744: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3745: if ($fetchresult eq 'ok') {
3746: if ($fetchthumb) {
3747: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3748: if ($thumbresult ne 'ok') {
3749: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3750: $docuhome.': '.$thumbresult);
3751: }
3752: }
3753: #
3754: # Return the URL to it
3755: return '/uploaded/'.$path.$file;
3756: } else {
3757: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3758: ': '.$fetchresult);
3759: return '/adm/notfound.html';
3760: }
3761: }
3762:
3763: sub extract_embedded_items {
3764: my ($fullpath,$allfiles,$codebase,$content) = @_;
3765: my @state = ();
3766: my (%lastids,%related,%shockwave,%flashvars);
3767: my %javafiles = (
3768: codebase => '',
3769: code => '',
3770: archive => ''
3771: );
3772: my %mediafiles = (
3773: src => '',
3774: movie => '',
3775: );
3776: my $p;
3777: if ($content) {
3778: $p = HTML::LCParser->new($content);
3779: } else {
3780: $p = HTML::LCParser->new($fullpath);
3781: }
3782: while (my $t=$p->get_token()) {
3783: if ($t->[0] eq 'S') {
3784: my ($tagname, $attr) = ($t->[1],$t->[2]);
3785: push(@state, $tagname);
3786: if (lc($tagname) eq 'allow') {
3787: &add_filetype($allfiles,$attr->{'src'},'src');
3788: }
3789: if (lc($tagname) eq 'img') {
3790: &add_filetype($allfiles,$attr->{'src'},'src');
3791: }
3792: if (lc($tagname) eq 'a') {
3793: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3794: &add_filetype($allfiles,$attr->{'href'},'href');
3795: }
3796: }
3797: if (lc($tagname) eq 'script') {
3798: my $src;
3799: if ($attr->{'archive'} =~ /\.jar$/i) {
3800: &add_filetype($allfiles,$attr->{'archive'},'archive');
3801: } else {
3802: if ($attr->{'src'} ne '') {
3803: $src = $attr->{'src'};
3804: &add_filetype($allfiles,$src,'src');
3805: }
3806: }
3807: my $text = $p->get_trimmed_text();
3808: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3809: my @swfargs = split(/,/,$1);
3810: foreach my $item (@swfargs) {
3811: $item =~ s/["']//g;
3812: $item =~ s/^\s+//;
3813: $item =~ s/\s+$//;
3814: }
3815: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3816: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3817: push(@{$related{$swfargs[0]}},$swfargs[2]);
3818: } else {
3819: $related{$swfargs[0]} = [$swfargs[2]];
3820: }
3821: }
3822: }
3823: }
3824: if (lc($tagname) eq 'link') {
3825: if (lc($attr->{'rel'}) eq 'stylesheet') {
3826: &add_filetype($allfiles,$attr->{'href'},'href');
3827: }
3828: }
3829: if (lc($tagname) eq 'object' ||
3830: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3831: foreach my $item (keys(%javafiles)) {
3832: $javafiles{$item} = '';
3833: }
3834: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3835: $lastids{lc($tagname)} = $attr->{'id'};
3836: }
3837: }
3838: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3839: my $name = lc($attr->{'name'});
3840: foreach my $item (keys(%javafiles)) {
3841: if ($name eq $item) {
3842: $javafiles{$item} = $attr->{'value'};
3843: last;
3844: }
3845: }
3846: my $pathfrom;
3847: foreach my $item (keys(%mediafiles)) {
3848: if ($name eq $item) {
3849: $pathfrom = $attr->{'value'};
3850: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3851: &add_filetype($allfiles,$pathfrom,$name);
3852: last;
3853: }
3854: }
3855: if ($name eq 'flashvars') {
3856: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3857: }
3858: if ($pathfrom ne '') {
3859: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3860: $pathfrom);
3861: }
3862: }
3863: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3864: foreach my $item (keys(%javafiles)) {
3865: if ($attr->{$item}) {
3866: $javafiles{$item} = $attr->{$item};
3867: last;
3868: }
3869: }
3870: foreach my $item (keys(%mediafiles)) {
3871: if ($attr->{$item}) {
3872: &add_filetype($allfiles,$attr->{$item},$item);
3873: last;
3874: }
3875: }
3876: if (lc($tagname) eq 'embed') {
3877: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3878: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3879: $attr->{'src'});
3880: }
3881: }
3882: }
3883: if (lc($tagname) eq 'iframe') {
3884: my $src = $attr->{'src'} ;
3885: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3886: &add_filetype($allfiles,$src,'src');
3887: } elsif ($src =~ m{^/}) {
3888: if ($env{'request.course.id'}) {
3889: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3890: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3891: my $url = &hreflocation('',$fullpath);
3892: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3893: my $relpath = $1;
3894: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3895: &add_filetype($allfiles,$1,'src');
3896: }
3897: }
3898: }
3899: }
3900: }
3901: if ($t->[4] =~ m{/>$}) {
3902: pop(@state);
3903: }
3904: } elsif ($t->[0] eq 'E') {
3905: my ($tagname) = ($t->[1]);
3906: if ($javafiles{'codebase'} ne '') {
3907: $javafiles{'codebase'} .= '/';
3908: }
3909: if (lc($tagname) eq 'applet' ||
3910: lc($tagname) eq 'object' ||
3911: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3912: ) {
3913: foreach my $item (keys(%javafiles)) {
3914: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3915: my $file=$javafiles{'codebase'}.$javafiles{$item};
3916: &add_filetype($allfiles,$file,$item);
3917: }
3918: }
3919: }
3920: pop @state;
3921: }
3922: }
3923: foreach my $id (sort(keys(%flashvars))) {
3924: if ($shockwave{$id} ne '') {
3925: my @pairs = split(/\&/,$flashvars{$id});
3926: foreach my $pair (@pairs) {
3927: my ($key,$value) = split(/\=/,$pair);
3928: if ($key eq 'thumb') {
3929: &add_filetype($allfiles,$value,$key);
3930: } elsif ($key eq 'content') {
3931: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3932: my ($ext) = ($value =~ /\.([^.]+)$/);
3933: if ($ext ne '') {
3934: &add_filetype($allfiles,$path.$value,$ext);
3935: }
3936: }
3937: }
3938: }
3939: }
3940: return 'ok';
3941: }
3942:
3943: sub add_filetype {
3944: my ($allfiles,$file,$type)=@_;
3945: if (exists($allfiles->{$file})) {
3946: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3947: push(@{$allfiles->{$file}}, &escape($type));
3948: }
3949: } else {
3950: @{$allfiles->{$file}} = (&escape($type));
3951: }
3952: }
3953:
3954: sub embedded_dependency {
3955: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3956: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3957: if (($identifier ne '') &&
3958: (ref($related->{$identifier}) eq 'ARRAY') &&
3959: ($pathfrom ne '')) {
3960: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3961: foreach my $dep (@{$related->{$identifier}}) {
3962: &add_filetype($allfiles,$path.$dep,'object');
3963: }
3964: }
3965: }
3966: return;
3967: }
3968:
3969: sub removeuploadedurl {
3970: my ($url)=@_;
3971: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3972: return &removeuserfile($uname,$udom,$fname);
3973: }
3974:
3975: sub removeuserfile {
3976: my ($docuname,$docudom,$fname)=@_;
3977: my $home=&homeserver($docuname,$docudom);
3978: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3979: if ($result eq 'ok') {
3980: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3981: my $metafile = $fname.'.meta';
3982: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3983: my $url = "/uploaded/$docudom/$docuname/$fname";
3984: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3985: my $sqlresult =
3986: &update_portfolio_table($docuname,$docudom,$file,
3987: 'portfolio_metadata',$group,
3988: 'delete');
3989: }
3990: }
3991: return $result;
3992: }
3993:
3994: sub mkdiruserfile {
3995: my ($docuname,$docudom,$dir)=@_;
3996: my $home=&homeserver($docuname,$docudom);
3997: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3998: }
3999:
4000: sub renameuserfile {
4001: my ($docuname,$docudom,$old,$new)=@_;
4002: my $home=&homeserver($docuname,$docudom);
4003: my $result = &reply("renameuserfile:$docudom:$docuname:".
4004: &escape("$old").':'.&escape("$new"),$home);
4005: if ($result eq 'ok') {
4006: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4007: my $oldmeta = $old.'.meta';
4008: my $newmeta = $new.'.meta';
4009: my $metaresult =
4010: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4011: my $url = "/uploaded/$docudom/$docuname/$old";
4012: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4013: my $sqlresult =
4014: &update_portfolio_table($docuname,$docudom,$file,
4015: 'portfolio_metadata',$group,
4016: 'delete');
4017: }
4018: }
4019: return $result;
4020: }
4021:
4022: # ------------------------------------------------------------------------- Log
4023:
4024: sub log {
4025: my ($dom,$nam,$hom,$what)=@_;
4026: return critical("log:$dom:$nam:$what",$hom);
4027: }
4028:
4029: # ------------------------------------------------------------------ Course Log
4030: #
4031: # This routine flushes several buffers of non-mission-critical nature
4032: #
4033:
4034: sub flushcourselogs {
4035: &logthis('Flushing log buffers');
4036: #
4037: # course logs
4038: # This is a log of all transactions in a course, which can be used
4039: # for data mining purposes
4040: #
4041: # It also collects the courseid database, which lists last transaction
4042: # times and course titles for all courseids
4043: #
4044: my %courseidbuffer=();
4045: foreach my $crsid (keys(%courselogs)) {
4046: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4047: &escape($courselogs{$crsid}),
4048: $coursehombuf{$crsid}) eq 'ok') {
4049: delete $courselogs{$crsid};
4050: } else {
4051: &logthis('Failed to flush log buffer for '.$crsid);
4052: if (length($courselogs{$crsid})>40000) {
4053: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4054: " exceeded maximum size, deleting.</font>");
4055: delete $courselogs{$crsid};
4056: }
4057: }
4058: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4059: 'description' => $coursedescrbuf{$crsid},
4060: 'inst_code' => $courseinstcodebuf{$crsid},
4061: 'type' => $coursetypebuf{$crsid},
4062: 'owner' => $courseownerbuf{$crsid},
4063: };
4064: }
4065: #
4066: # Write course id database (reverse lookup) to homeserver of courses
4067: # Is used in pickcourse
4068: #
4069: foreach my $crs_home (keys(%courseidbuffer)) {
4070: my $response = &courseidput(&host_domain($crs_home),
4071: $courseidbuffer{$crs_home},
4072: $crs_home,'timeonly');
4073: }
4074: #
4075: # File accesses
4076: # Writes to the dynamic metadata of resources to get hit counts, etc.
4077: #
4078: foreach my $entry (keys(%accesshash)) {
4079: if ($entry =~ /___count$/) {
4080: my ($dom,$name);
4081: ($dom,$name,undef)=
4082: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4083: if (! defined($dom) || $dom eq '' ||
4084: ! defined($name) || $name eq '') {
4085: my $cid = $env{'request.course.id'};
4086: $dom = $env{'request.'.$cid.'.domain'};
4087: $name = $env{'request.'.$cid.'.num'};
4088: }
4089: my $value = $accesshash{$entry};
4090: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4091: my %temphash=($url => $value);
4092: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4093: if ($result eq 'ok') {
4094: delete $accesshash{$entry};
4095: }
4096: } else {
4097: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4098: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4099: my %temphash=($entry => $accesshash{$entry});
4100: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4101: delete $accesshash{$entry};
4102: }
4103: }
4104: }
4105: #
4106: # Roles
4107: # Reverse lookup of user roles for course faculty/staff and co-authorship
4108: #
4109: foreach my $entry (keys(%userrolehash)) {
4110: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4111: split(/\:/,$entry);
4112: if (&Apache::lonnet::put('nohist_userroles',
4113: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4114: $rudom,$runame) eq 'ok') {
4115: delete $userrolehash{$entry};
4116: }
4117: }
4118: #
4119: # Reverse lookup of domain roles (dc, ad, li, sc, dh, au)
4120: #
4121: my %domrolebuffer = ();
4122: foreach my $entry (keys(%domainrolehash)) {
4123: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4124: if ($domrolebuffer{$rudom}) {
4125: $domrolebuffer{$rudom}.='&'.&escape($entry).
4126: '='.&escape($domainrolehash{$entry});
4127: } else {
4128: $domrolebuffer{$rudom}.=&escape($entry).
4129: '='.&escape($domainrolehash{$entry});
4130: }
4131: delete $domainrolehash{$entry};
4132: }
4133: foreach my $dom (keys(%domrolebuffer)) {
4134: my %servers;
4135: if (defined(&domain($dom,'primary'))) {
4136: my $primary=&domain($dom,'primary');
4137: my $hostname=&hostname($primary);
4138: $servers{$primary} = $hostname;
4139: } else {
4140: %servers = &get_servers($dom,'library');
4141: }
4142: foreach my $tryserver (keys(%servers)) {
4143: if (&reply('domroleput:'.$dom.':'.
4144: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4145: last;
4146: } else {
4147: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4148: }
4149: }
4150: }
4151: $dumpcount++;
4152: }
4153:
4154: sub courselog {
4155: my $what=shift;
4156: $what=time.':'.$what;
4157: unless ($env{'request.course.id'}) { return ''; }
4158: $coursedombuf{$env{'request.course.id'}}=
4159: $env{'course.'.$env{'request.course.id'}.'.domain'};
4160: $coursenumbuf{$env{'request.course.id'}}=
4161: $env{'course.'.$env{'request.course.id'}.'.num'};
4162: $coursehombuf{$env{'request.course.id'}}=
4163: $env{'course.'.$env{'request.course.id'}.'.home'};
4164: $coursedescrbuf{$env{'request.course.id'}}=
4165: $env{'course.'.$env{'request.course.id'}.'.description'};
4166: $courseinstcodebuf{$env{'request.course.id'}}=
4167: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4168: $courseownerbuf{$env{'request.course.id'}}=
4169: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4170: $coursetypebuf{$env{'request.course.id'}}=
4171: $env{'course.'.$env{'request.course.id'}.'.type'};
4172: if (defined $courselogs{$env{'request.course.id'}}) {
4173: $courselogs{$env{'request.course.id'}}.='&'.$what;
4174: } else {
4175: $courselogs{$env{'request.course.id'}}.=$what;
4176: }
4177: if (length($courselogs{$env{'request.course.id'}})>4048) {
4178: &flushcourselogs();
4179: }
4180: }
4181:
4182: sub courseacclog {
4183: my $fnsymb=shift;
4184: unless ($env{'request.course.id'}) { return ''; }
4185: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4186: if ($fnsymb=~/$LONCAPA::assess_re/) {
4187: $what.=':POST';
4188: # FIXME: Probably ought to escape things....
4189: foreach my $key (keys(%env)) {
4190: if ($key=~/^form\.(.*)/) {
4191: my $formitem = $1;
4192: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4193: $what.=':'.$formitem.'='.$env{$key};
4194: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4195: $what.=':'.$formitem.'='.$env{$key};
4196: }
4197: }
4198: }
4199: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4200: # FIXME: We should not be depending on a form parameter that someone
4201: # editing lonsearchcat.pm might change in the future.
4202: if ($env{'form.phase'} eq 'course_search') {
4203: $what.= ':POST';
4204: # FIXME: Probably ought to escape things....
4205: foreach my $element ('courseexp','crsfulltext','crsrelated',
4206: 'crsdiscuss') {
4207: $what.=':'.$element.'='.$env{'form.'.$element};
4208: }
4209: }
4210: }
4211: &courselog($what);
4212: }
4213:
4214: sub countacc {
4215: my $url=&declutter(shift);
4216: return if (! defined($url) || $url eq '');
4217: unless ($env{'request.course.id'}) { return ''; }
4218: #
4219: # Mark that this url was used in this course
4220: #
4221: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4222: #
4223: # Increase the access count for this resource in this child process
4224: #
4225: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4226: $accesshash{$key}++;
4227: }
4228:
4229: sub linklog {
4230: my ($from,$to)=@_;
4231: $from=&declutter($from);
4232: $to=&declutter($to);
4233: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4234: $accesshash{$to.'___'.$from.'___goto'}=1;
4235: }
4236:
4237: sub statslog {
4238: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4239: if ($users<2) { return; }
4240: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4241: 'course' => $env{'request.course.id'},
4242: 'sections' => '"all"',
4243: 'num_students' => $users,
4244: 'part' => $part,
4245: 'symb' => $symb,
4246: 'mean_tries' => $av_attempts,
4247: 'deg_of_diff' => $degdiff});
4248: foreach my $key (keys(%dynstore)) {
4249: $accesshash{$key}=$dynstore{$key};
4250: }
4251: }
4252:
4253: sub userrolelog {
4254: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4255: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4256: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4257: $userrolehash
4258: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4259: =$tend.':'.$tstart;
4260: }
4261: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4262: $userrolehash
4263: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4264: =$tend.':'.$tstart;
4265: }
4266: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh)/ ) {
4267: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4268: $domainrolehash
4269: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4270: = $tend.':'.$tstart;
4271: }
4272: }
4273:
4274: sub courserolelog {
4275: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4276: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4277: my $cdom = $1;
4278: my $cnum = $2;
4279: my $sec = $3;
4280: my $namespace = 'rolelog';
4281: my %storehash = (
4282: role => $trole,
4283: start => $tstart,
4284: end => $tend,
4285: selfenroll => $selfenroll,
4286: context => $context,
4287: );
4288: if ($trole eq 'gr') {
4289: $namespace = 'groupslog';
4290: $storehash{'group'} = $sec;
4291: } else {
4292: $storehash{'section'} = $sec;
4293: }
4294: &write_log('course',$namespace,\%storehash,$delflag,$username,
4295: $domain,$cnum,$cdom);
4296: if (($trole ne 'st') || ($sec ne '')) {
4297: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4298: }
4299: }
4300: return;
4301: }
4302:
4303: sub domainrolelog {
4304: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4305: if ($area =~ m{^/($match_domain)/$}) {
4306: my $cdom = $1;
4307: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4308: my $namespace = 'rolelog';
4309: my %storehash = (
4310: role => $trole,
4311: start => $tstart,
4312: end => $tend,
4313: context => $context,
4314: );
4315: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4316: $domain,$domconfiguser,$cdom);
4317: }
4318: return;
4319:
4320: }
4321:
4322: sub coauthorrolelog {
4323: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4324: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4325: my $audom = $1;
4326: my $auname = $2;
4327: my $namespace = 'rolelog';
4328: my %storehash = (
4329: role => $trole,
4330: start => $tstart,
4331: end => $tend,
4332: context => $context,
4333: );
4334: &write_log('author',$namespace,\%storehash,$delflag,$username,
4335: $domain,$auname,$audom);
4336: }
4337: return;
4338: }
4339:
4340: sub get_course_adv_roles {
4341: my ($cid,$codes) = @_;
4342: $cid=$env{'request.course.id'} unless (defined($cid));
4343: my %coursehash=&coursedescription($cid);
4344: my $crstype = &Apache::loncommon::course_type($cid);
4345: my %nothide=();
4346: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4347: if ($user !~ /:/) {
4348: $nothide{join(':',split(/[\@]/,$user))}=1;
4349: } else {
4350: $nothide{$user}=1;
4351: }
4352: }
4353: my @possdoms = ($coursehash{'domain'});
4354: if ($coursehash{'checkforpriv'}) {
4355: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4356: }
4357: my %returnhash=();
4358: my %dumphash=
4359: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4360: my $now=time;
4361: my %privileged;
4362: foreach my $entry (keys(%dumphash)) {
4363: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4364: if (($tstart) && ($tstart<0)) { next; }
4365: if (($tend) && ($tend<$now)) { next; }
4366: if (($tstart) && ($now<$tstart)) { next; }
4367: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4368: if ($username eq '' || $domain eq '') { next; }
4369: if ((&privileged($username,$domain,\@possdoms)) &&
4370: (!$nothide{$username.':'.$domain})) { next; }
4371: if ($role eq 'cr') { next; }
4372: if ($codes) {
4373: if ($section) { $role .= ':'.$section; }
4374: if ($returnhash{$role}) {
4375: $returnhash{$role}.=','.$username.':'.$domain;
4376: } else {
4377: $returnhash{$role}=$username.':'.$domain;
4378: }
4379: } else {
4380: my $key=&plaintext($role,$crstype);
4381: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4382: if ($returnhash{$key}) {
4383: $returnhash{$key}.=','.$username.':'.$domain;
4384: } else {
4385: $returnhash{$key}=$username.':'.$domain;
4386: }
4387: }
4388: }
4389: return %returnhash;
4390: }
4391:
4392: sub get_my_roles {
4393: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4394: unless (defined($uname)) { $uname=$env{'user.name'}; }
4395: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4396: my (%dumphash,%nothide);
4397: if ($context eq 'userroles') {
4398: %dumphash = &dump('roles',$udom,$uname);
4399: } else {
4400: %dumphash = &dump('nohist_userroles',$udom,$uname);
4401: if ($hidepriv) {
4402: my %coursehash=&coursedescription($udom.'_'.$uname);
4403: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4404: if ($user !~ /:/) {
4405: $nothide{join(':',split(/[\@]/,$user))} = 1;
4406: } else {
4407: $nothide{$user} = 1;
4408: }
4409: }
4410: }
4411: }
4412: my %returnhash=();
4413: my $now=time;
4414: my %privileged;
4415: foreach my $entry (keys(%dumphash)) {
4416: my ($role,$tend,$tstart);
4417: if ($context eq 'userroles') {
4418: next if ($entry =~ /^rolesdef/);
4419: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4420: } else {
4421: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4422: }
4423: if (($tstart) && ($tstart<0)) { next; }
4424: my $status = 'active';
4425: if (($tend) && ($tend<=$now)) {
4426: $status = 'previous';
4427: }
4428: if (($tstart) && ($now<$tstart)) {
4429: $status = 'future';
4430: }
4431: if (ref($types) eq 'ARRAY') {
4432: if (!grep(/^\Q$status\E$/,@{$types})) {
4433: next;
4434: }
4435: } else {
4436: if ($status ne 'active') {
4437: next;
4438: }
4439: }
4440: my ($rolecode,$username,$domain,$section,$area);
4441: if ($context eq 'userroles') {
4442: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4443: (undef,$domain,$username,$section) = split(/\//,$area);
4444: } else {
4445: ($role,$username,$domain,$section) = split(/\:/,$entry);
4446: }
4447: if (ref($roledoms) eq 'ARRAY') {
4448: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4449: next;
4450: }
4451: }
4452: if (ref($roles) eq 'ARRAY') {
4453: if (!grep(/^\Q$role\E$/,@{$roles})) {
4454: if ($role =~ /^cr\//) {
4455: if (!grep(/^cr$/,@{$roles})) {
4456: next;
4457: }
4458: } elsif ($role =~ /^gr\//) {
4459: if (!grep(/^gr$/,@{$roles})) {
4460: next;
4461: }
4462: } else {
4463: next;
4464: }
4465: }
4466: }
4467: if ($hidepriv) {
4468: my @privroles = ('dc','su');
4469: if ($context eq 'userroles') {
4470: next if (grep(/^\Q$role\E$/,@privroles));
4471: } else {
4472: my $possdoms = [$domain];
4473: if (ref($roledoms) eq 'ARRAY') {
4474: push(@{$possdoms},@{$roledoms});
4475: }
4476: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4477: if (!$nothide{$username.':'.$domain}) {
4478: next;
4479: }
4480: }
4481: }
4482: }
4483: if ($withsec) {
4484: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4485: $tstart.':'.$tend;
4486: } else {
4487: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4488: }
4489: }
4490: return %returnhash;
4491: }
4492:
4493: sub get_all_adhocroles {
4494: my ($dom) = @_;
4495: my @roles_by_num = ();
4496: my %domdefaults = &get_domain_defaults($dom);
4497: my (%description,%access_in_dom,%access_info);
4498: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4499: my $count = 0;
4500: my %domcurrent = %{$domdefaults{'adhocroles'}};
4501: my %ordered;
4502: foreach my $role (sort(keys(%domcurrent))) {
4503: my ($order,$desc,$access_in_dom);
4504: if (ref($domcurrent{$role}) eq 'HASH') {
4505: $order = $domcurrent{$role}{'order'};
4506: $desc = $domcurrent{$role}{'desc'};
4507: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4508: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4509: }
4510: if ($order eq '') {
4511: $order = $count;
4512: }
4513: $ordered{$order} = $role;
4514: if ($desc ne '') {
4515: $description{$role} = $desc;
4516: } else {
4517: $description{$role}= $role;
4518: }
4519: $count++;
4520: }
4521: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4522: push(@roles_by_num,$ordered{$item});
4523: }
4524: }
4525: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4526: }
4527:
4528: sub get_my_adhocroles {
4529: my ($cid,$checkreg) = @_;
4530: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4531: if ($env{'request.course.id'} eq $cid) {
4532: $cdom = $env{'course.'.$cid.'.domain'};
4533: $cnum = $env{'course.'.$cid.'.num'};
4534: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4535: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4536: $cdom = $1;
4537: $cnum = $2;
4538: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4539: $cdom,$cnum);
4540: }
4541: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4542: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4543: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4544: if ($rosterhash{$user} ne '') {
4545: my $type = (split(/:/,$rosterhash{$user}))[5];
4546: return ([],{}) if ($type eq 'auto');
4547: }
4548: }
4549: if (($cdom ne '') && ($cnum ne '')) {
4550: if ($env{"user.role.dh./$cdom/"}) {
4551: my $then=$env{'user.login.time'};
4552: my $update=$env{'user.update.time'};
4553: my $liverole = 1;
4554: my ($tstart,$tend)=split(/\./,$env{'user.role.dh./'.$cdom});
4555: my $limit = $update;
4556: if ($env{'request.role'} eq 'dh./'.$cdom.'/') {
4557: $limit = $then;
4558: }
4559: if ($tstart && $tstart>$limit) { $liverole = 0; }
4560: if ($tend && $tend <$limit) { $liverole = 0; }
4561: if ($liverole) {
4562: if (&homeserver($cnum,$cdom) ne 'no_host') {
4563: my ($accessref,$accessinfo,%access_in_dom);
4564: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4565: if (ref($roles_by_num) eq 'ARRAY') {
4566: if (@{$roles_by_num}) {
4567: my %settings;
4568: if ($env{'request.course.id'} eq $cid) {
4569: foreach my $envkey (keys(%env)) {
4570: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4571: $settings{$1} = $env{$envkey};
4572: }
4573: }
4574: } else {
4575: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4576: }
4577: my %setincrs;
4578: if ($settings{'internal.adhocaccess'}) {
4579: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4580: }
4581: my @statuses;
4582: if ($env{'environment.inststatus'}) {
4583: @statuses = split(/,/,$env{'environment.inststatus'});
4584: }
4585: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4586: if (ref($accessref) eq 'HASH') {
4587: %access_in_dom = %{$accessref};
4588: }
4589: foreach my $role (@{$roles_by_num}) {
4590: my ($curraccess,@okstatus,@personnel);
4591: if ($setincrs{$role}) {
4592: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4593: if ($curraccess eq 'status') {
4594: @okstatus = split(/\&/,$rest);
4595: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4596: @personnel = split(/\&/,$rest);
4597: }
4598: } else {
4599: $curraccess = $access_in_dom{$role};
4600: if (ref($accessinfo) eq 'HASH') {
4601: if ($curraccess eq 'status') {
4602: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4603: @okstatus = @{$accessinfo->{$role}};
4604: }
4605: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4606: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4607: @personnel = @{$accessinfo->{$role}};
4608: }
4609: }
4610: }
4611: }
4612: if ($curraccess eq 'none') {
4613: next;
4614: } elsif ($curraccess eq 'all') {
4615: push(@possroles,$role);
4616: } elsif ($curraccess eq 'status') {
4617: if (@okstatus) {
4618: if (!@statuses) {
4619: if (grep(/^default$/,@okstatus)) {
4620: push(@possroles,$role);
4621: }
4622: } else {
4623: foreach my $status (@okstatus) {
4624: if (grep(/^\Q$status\E$/,@statuses)) {
4625: push(@possroles,$role);
4626: last;
4627: }
4628: }
4629: }
4630: }
4631: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4632: if (grep(/^\Q$user\E$/,@personnel)) {
4633: if ($curraccess eq 'exc') {
4634: push(@possroles,$role);
4635: }
4636: } elsif ($curraccess eq 'inc') {
4637: push(@possroles,$role);
4638: }
4639: }
4640: }
4641: }
4642: }
4643: }
4644: }
4645: }
4646: }
4647: unless (ref($description) eq 'HASH') {
4648: if (ref($roles_by_num) eq 'ARRAY') {
4649: my %desc;
4650: map { $desc{$_} = $_; } (@{$roles_by_num});
4651: $description = \%desc;
4652: } else {
4653: $description = {};
4654: }
4655: }
4656: return (\@possroles,$description);
4657: }
4658:
4659: # ----------------------------------------------------- Frontpage Announcements
4660: #
4661: #
4662:
4663: sub postannounce {
4664: my ($server,$text)=@_;
4665: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4666: unless ($text=~/\w/) { $text=''; }
4667: return &reply('setannounce:'.&escape($text),$server);
4668: }
4669:
4670: sub getannounce {
4671:
4672: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4673: my $announcement='';
4674: while (my $line = <$fh>) { $announcement .= $line; }
4675: close($fh);
4676: if ($announcement=~/\w/) {
4677: return
4678: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4679: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4680: } else {
4681: return '';
4682: }
4683: } else {
4684: return '';
4685: }
4686: }
4687:
4688: # ---------------------------------------------------------- Course ID routines
4689: # Deal with domain's nohist_courseid.db files
4690: #
4691:
4692: sub courseidput {
4693: my ($domain,$storehash,$coursehome,$caller) = @_;
4694: return unless (ref($storehash) eq 'HASH');
4695: my $outcome;
4696: if ($caller eq 'timeonly') {
4697: my $cids = '';
4698: foreach my $item (keys(%$storehash)) {
4699: $cids.=&escape($item).'&';
4700: }
4701: $cids=~s/\&$//;
4702: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4703: $coursehome);
4704: } else {
4705: my $items = '';
4706: foreach my $item (keys(%$storehash)) {
4707: $items.= &escape($item).'='.
4708: &freeze_escape($$storehash{$item}).'&';
4709: }
4710: $items=~s/\&$//;
4711: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4712: $coursehome);
4713: }
4714: if ($outcome eq 'unknown_cmd') {
4715: my $what;
4716: foreach my $cid (keys(%$storehash)) {
4717: $what .= &escape($cid).'=';
4718: foreach my $item ('description','inst_code','owner','type') {
4719: $what .= &escape($storehash->{$cid}{$item}).':';
4720: }
4721: $what =~ s/\:$/&/;
4722: }
4723: $what =~ s/\&$//;
4724: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4725: } else {
4726: return $outcome;
4727: }
4728: }
4729:
4730: sub courseiddump {
4731: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4732: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4733: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4734: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4735: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4736: my $as_hash = 1;
4737: my %returnhash;
4738: if (!$domfilter) { $domfilter=''; }
4739: my %libserv = &all_library();
4740: foreach my $tryserver (keys(%libserv)) {
4741: if ( ( $hostidflag == 1
4742: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4743: || (!defined($hostidflag)) ) {
4744:
4745: if (($domfilter eq '') ||
4746: (&host_domain($tryserver) eq $domfilter)) {
4747: my $rep;
4748: if (grep { $_ eq $tryserver } current_machine_ids()) {
4749: $rep = LONCAPA::Lond::dump_course_id_handler(
4750: join(":", (&host_domain($tryserver), $sincefilter,
4751: &escape($descfilter), &escape($instcodefilter),
4752: &escape($ownerfilter), &escape($coursefilter),
4753: &escape($typefilter), &escape($regexp_ok),
4754: $as_hash, &escape($selfenrollonly),
4755: &escape($catfilter), $showhidden, $caller,
4756: &escape($cloner), &escape($cc_clone), $cloneonly,
4757: &escape($createdbefore), &escape($createdafter),
4758: &escape($creationcontext),$domcloner,$hasuniquecode,
4759: $reqcrsdom,&escape($reqinstcode))));
4760: } else {
4761: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4762: $sincefilter.':'.&escape($descfilter).':'.
4763: &escape($instcodefilter).':'.&escape($ownerfilter).
4764: ':'.&escape($coursefilter).':'.&escape($typefilter).
4765: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4766: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4767: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4768: &escape($cc_clone).':'.$cloneonly.':'.
4769: &escape($createdbefore).':'.&escape($createdafter).':'.
4770: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4771: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4772: }
4773:
4774: my @pairs=split(/\&/,$rep);
4775: foreach my $item (@pairs) {
4776: my ($key,$value)=split(/\=/,$item,2);
4777: $key = &unescape($key);
4778: next if ($key =~ /^error: 2 /);
4779: my $result = &thaw_unescape($value);
4780: if (ref($result) eq 'HASH') {
4781: $returnhash{$key}=$result;
4782: } else {
4783: my @responses = split(/:/,$value);
4784: my @items = ('description','inst_code','owner','type');
4785: for (my $i=0; $i<@responses; $i++) {
4786: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4787: }
4788: }
4789: }
4790: }
4791: }
4792: }
4793: return %returnhash;
4794: }
4795:
4796: sub courselastaccess {
4797: my ($cdom,$cnum,$hostidref) = @_;
4798: my %returnhash;
4799: if ($cdom && $cnum) {
4800: my $chome = &homeserver($cnum,$cdom);
4801: if ($chome ne 'no_host') {
4802: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4803: &extract_lastaccess(\%returnhash,$rep);
4804: }
4805: } else {
4806: if (!$cdom) { $cdom=''; }
4807: my %libserv = &all_library();
4808: foreach my $tryserver (keys(%libserv)) {
4809: if (ref($hostidref) eq 'ARRAY') {
4810: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4811: }
4812: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4813: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4814: &extract_lastaccess(\%returnhash,$rep);
4815: }
4816: }
4817: }
4818: return %returnhash;
4819: }
4820:
4821: sub extract_lastaccess {
4822: my ($returnhash,$rep) = @_;
4823: if (ref($returnhash) eq 'HASH') {
4824: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4825: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4826: $rep eq '') {
4827: my @pairs=split(/\&/,$rep);
4828: foreach my $item (@pairs) {
4829: my ($key,$value)=split(/\=/,$item,2);
4830: $key = &unescape($key);
4831: next if ($key =~ /^error: 2 /);
4832: $returnhash->{$key} = &thaw_unescape($value);
4833: }
4834: }
4835: }
4836: return;
4837: }
4838:
4839: # ---------------------------------------------------------- DC e-mail
4840:
4841: sub dcmailput {
4842: my ($domain,$msgid,$message,$server)=@_;
4843: my $status = &Apache::lonnet::critical(
4844: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4845: &escape($message),$server);
4846: return $status;
4847: }
4848:
4849: sub dcmaildump {
4850: my ($dom,$startdate,$enddate,$senders) = @_;
4851: my %returnhash=();
4852:
4853: if (defined(&domain($dom,'primary'))) {
4854: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4855: &escape($enddate).':';
4856: my @esc_senders=map { &escape($_)} @$senders;
4857: $cmd.=&escape(join('&',@esc_senders));
4858: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4859: my ($key,$value) = split(/\=/,$line,2);
4860: if (($key) && ($value)) {
4861: $returnhash{&unescape($key)} = &unescape($value);
4862: }
4863: }
4864: }
4865: return %returnhash;
4866: }
4867: # ---------------------------------------------------------- Domain roles
4868:
4869: sub get_domain_roles {
4870: my ($dom,$roles,$startdate,$enddate)=@_;
4871: if ((!defined($startdate)) || ($startdate eq '')) {
4872: $startdate = '.';
4873: }
4874: if ((!defined($enddate)) || ($enddate eq '')) {
4875: $enddate = '.';
4876: }
4877: my $rolelist;
4878: if (ref($roles) eq 'ARRAY') {
4879: $rolelist = join('&',@{$roles});
4880: }
4881: my %personnel = ();
4882:
4883: my %servers = &get_servers($dom,'library');
4884: foreach my $tryserver (keys(%servers)) {
4885: %{$personnel{$tryserver}}=();
4886: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4887: &escape($startdate).':'.
4888: &escape($enddate).':'.
4889: &escape($rolelist), $tryserver))) {
4890: my ($key,$value) = split(/\=/,$line,2);
4891: if (($key) && ($value)) {
4892: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4893: }
4894: }
4895: }
4896: return %personnel;
4897: }
4898:
4899: sub get_active_domroles {
4900: my ($dom,$roles) = @_;
4901: return () unless (ref($roles) eq 'ARRAY');
4902: my $now = time;
4903: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
4904: my %domroles;
4905: foreach my $server (keys(%dompersonnel)) {
4906: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
4907: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
4908: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
4909: }
4910: }
4911: return %domroles;
4912: }
4913:
4914: # ----------------------------------------------------------- Interval timing
4915:
4916: {
4917: # Caches needed for speedup of navmaps
4918: # We don't want to cache this for very long at all (5 seconds at most)
4919: #
4920: # The user for whom we cache
4921: my $cachedkey='';
4922: # The cached times for this user
4923: my %cachedtimes=();
4924: # When this was last done
4925: my $cachedtime='';
4926:
4927: sub load_all_first_access {
4928: my ($uname,$udom,$ignorecache)=@_;
4929: if (($cachedkey eq $uname.':'.$udom) &&
4930: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
4931: (!$ignorecache)) {
4932: return;
4933: }
4934: $cachedtime=time;
4935: $cachedkey=$uname.':'.$udom;
4936: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4937: }
4938:
4939: sub get_first_access {
4940: my ($type,$argsymb,$argmap,$ignorecache)=@_;
4941: my ($symb,$courseid,$udom,$uname)=&whichuser();
4942: if ($argsymb) { $symb=$argsymb; }
4943: my ($map,$id,$res)=&decode_symb($symb);
4944: if ($argmap) { $map = $argmap; }
4945: if ($type eq 'course') {
4946: $res='course';
4947: } elsif ($type eq 'map') {
4948: $res=&symbread($map);
4949: } else {
4950: $res=$symb;
4951: }
4952: &load_all_first_access($uname,$udom,$ignorecache);
4953: return $cachedtimes{"$courseid\0$res"};
4954: }
4955:
4956: sub set_first_access {
4957: my ($type,$interval)=@_;
4958: my ($symb,$courseid,$udom,$uname)=&whichuser();
4959: my ($map,$id,$res)=&decode_symb($symb);
4960: if ($type eq 'course') {
4961: $res='course';
4962: } elsif ($type eq 'map') {
4963: $res=&symbread($map);
4964: } else {
4965: $res=$symb;
4966: }
4967: $cachedkey='';
4968: my $firstaccess=&get_first_access($type,$symb,$map);
4969: if (!$firstaccess) {
4970: my $start = time;
4971: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4972: $udom,$uname);
4973: if ($putres eq 'ok') {
4974: &put('timerinterval',{"$courseid\0$res"=>$interval},
4975: $udom,$uname);
4976: &appenv(
4977: {
4978: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4979: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4980: }
4981: );
4982: }
4983: return $putres;
4984: }
4985: return 'already_set';
4986: }
4987: }
4988:
4989: # --------------------------------------------- Set Expire Date for Spreadsheet
4990:
4991: sub expirespread {
4992: my ($uname,$udom,$stype,$usymb)=@_;
4993: my $cid=$env{'request.course.id'};
4994: if ($cid) {
4995: my $now=time;
4996: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4997: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4998: $env{'course.'.$cid.'.num'}.
4999: ':nohist_expirationdates:'.
5000: &escape($key).'='.$now,
5001: $env{'course.'.$cid.'.home'})
5002: }
5003: return 'ok';
5004: }
5005:
5006: # ----------------------------------------------------- Devalidate Spreadsheets
5007:
5008: sub devalidate {
5009: my ($symb,$uname,$udom)=@_;
5010: my $cid=$env{'request.course.id'};
5011: if ($cid) {
5012: # delete the stored spreadsheets for
5013: # - the student level sheet of this user in course's homespace
5014: # - the assessment level sheet for this resource
5015: # for this user in user's homespace
5016: # - current conditional state info
5017: my $key=$uname.':'.$udom.':';
5018: my $status=
5019: &del('nohist_calculatedsheets',
5020: [$key.'studentcalc:'],
5021: $env{'course.'.$cid.'.domain'},
5022: $env{'course.'.$cid.'.num'})
5023: .' '.
5024: &del('nohist_calculatedsheets_'.$cid,
5025: [$key.'assesscalc:'.$symb],$udom,$uname);
5026: unless ($status eq 'ok ok') {
5027: &logthis('Could not devalidate spreadsheet '.
5028: $uname.' at '.$udom.' for '.
5029: $symb.': '.$status);
5030: }
5031: &delenv('user.state.'.$cid);
5032: }
5033: }
5034:
5035: sub get_scalar {
5036: my ($string,$end) = @_;
5037: my $value;
5038: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5039: $value = $1;
5040: } elsif ($$string =~ s/^([^&]*?)&//) {
5041: $value = $1;
5042: }
5043: return &unescape($value);
5044: }
5045:
5046: sub array2str {
5047: my (@array) = @_;
5048: my $result=&arrayref2str(\@array);
5049: $result=~s/^__ARRAY_REF__//;
5050: $result=~s/__END_ARRAY_REF__$//;
5051: return $result;
5052: }
5053:
5054: sub arrayref2str {
5055: my ($arrayref) = @_;
5056: my $result='__ARRAY_REF__';
5057: foreach my $elem (@$arrayref) {
5058: if(ref($elem) eq 'ARRAY') {
5059: $result.=&arrayref2str($elem).'&';
5060: } elsif(ref($elem) eq 'HASH') {
5061: $result.=&hashref2str($elem).'&';
5062: } elsif(ref($elem)) {
5063: #print("Got a ref of ".(ref($elem))." skipping.");
5064: } else {
5065: $result.=&escape($elem).'&';
5066: }
5067: }
5068: $result=~s/\&$//;
5069: $result .= '__END_ARRAY_REF__';
5070: return $result;
5071: }
5072:
5073: sub hash2str {
5074: my (%hash) = @_;
5075: my $result=&hashref2str(\%hash);
5076: $result=~s/^__HASH_REF__//;
5077: $result=~s/__END_HASH_REF__$//;
5078: return $result;
5079: }
5080:
5081: sub hashref2str {
5082: my ($hashref)=@_;
5083: my $result='__HASH_REF__';
5084: foreach my $key (sort(keys(%$hashref))) {
5085: if (ref($key) eq 'ARRAY') {
5086: $result.=&arrayref2str($key).'=';
5087: } elsif (ref($key) eq 'HASH') {
5088: $result.=&hashref2str($key).'=';
5089: } elsif (ref($key)) {
5090: $result.='=';
5091: #print("Got a ref of ".(ref($key))." skipping.");
5092: } else {
5093: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5094: }
5095:
5096: if(ref($hashref->{$key}) eq 'ARRAY') {
5097: $result.=&arrayref2str($hashref->{$key}).'&';
5098: } elsif(ref($hashref->{$key}) eq 'HASH') {
5099: $result.=&hashref2str($hashref->{$key}).'&';
5100: } elsif(ref($hashref->{$key})) {
5101: $result.='&';
5102: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5103: } else {
5104: $result.=&escape($hashref->{$key}).'&';
5105: }
5106: }
5107: $result=~s/\&$//;
5108: $result .= '__END_HASH_REF__';
5109: return $result;
5110: }
5111:
5112: sub str2hash {
5113: my ($string)=@_;
5114: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5115: return %$hash;
5116: }
5117:
5118: sub str2hashref {
5119: my ($string) = @_;
5120:
5121: my %hash;
5122:
5123: if($string !~ /^__HASH_REF__/) {
5124: if (! ($string eq '' || !defined($string))) {
5125: $hash{'error'}='Not hash reference';
5126: }
5127: return (\%hash, $string);
5128: }
5129:
5130: $string =~ s/^__HASH_REF__//;
5131:
5132: while($string !~ /^__END_HASH_REF__/) {
5133: #key
5134: my $key='';
5135: if($string =~ /^__HASH_REF__/) {
5136: ($key, $string)=&str2hashref($string);
5137: if(defined($key->{'error'})) {
5138: $hash{'error'}='Bad data';
5139: return (\%hash, $string);
5140: }
5141: } elsif($string =~ /^__ARRAY_REF__/) {
5142: ($key, $string)=&str2arrayref($string);
5143: if($key->[0] eq 'Array reference error') {
5144: $hash{'error'}='Bad data';
5145: return (\%hash, $string);
5146: }
5147: } else {
5148: $string =~ s/^(.*?)=//;
5149: $key=&unescape($1);
5150: }
5151: $string =~ s/^=//;
5152:
5153: #value
5154: my $value='';
5155: if($string =~ /^__HASH_REF__/) {
5156: ($value, $string)=&str2hashref($string);
5157: if(defined($value->{'error'})) {
5158: $hash{'error'}='Bad data';
5159: return (\%hash, $string);
5160: }
5161: } elsif($string =~ /^__ARRAY_REF__/) {
5162: ($value, $string)=&str2arrayref($string);
5163: if($value->[0] eq 'Array reference error') {
5164: $hash{'error'}='Bad data';
5165: return (\%hash, $string);
5166: }
5167: } else {
5168: $value=&get_scalar(\$string,'__END_HASH_REF__');
5169: }
5170: $string =~ s/^&//;
5171:
5172: $hash{$key}=$value;
5173: }
5174:
5175: $string =~ s/^__END_HASH_REF__//;
5176:
5177: return (\%hash, $string);
5178: }
5179:
5180: sub str2array {
5181: my ($string)=@_;
5182: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5183: return @$array;
5184: }
5185:
5186: sub str2arrayref {
5187: my ($string) = @_;
5188: my @array;
5189:
5190: if($string !~ /^__ARRAY_REF__/) {
5191: if (! ($string eq '' || !defined($string))) {
5192: $array[0]='Array reference error';
5193: }
5194: return (\@array, $string);
5195: }
5196:
5197: $string =~ s/^__ARRAY_REF__//;
5198:
5199: while($string !~ /^__END_ARRAY_REF__/) {
5200: my $value='';
5201: if($string =~ /^__HASH_REF__/) {
5202: ($value, $string)=&str2hashref($string);
5203: if(defined($value->{'error'})) {
5204: $array[0] ='Array reference error';
5205: return (\@array, $string);
5206: }
5207: } elsif($string =~ /^__ARRAY_REF__/) {
5208: ($value, $string)=&str2arrayref($string);
5209: if($value->[0] eq 'Array reference error') {
5210: $array[0] ='Array reference error';
5211: return (\@array, $string);
5212: }
5213: } else {
5214: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5215: }
5216: $string =~ s/^&//;
5217:
5218: push(@array, $value);
5219: }
5220:
5221: $string =~ s/^__END_ARRAY_REF__//;
5222:
5223: return (\@array, $string);
5224: }
5225:
5226: # -------------------------------------------------------------------Temp Store
5227:
5228: sub tmpreset {
5229: my ($symb,$namespace,$domain,$stuname) = @_;
5230: if (!$symb) {
5231: $symb=&symbread();
5232: if (!$symb) { $symb= $env{'request.url'}; }
5233: }
5234: $symb=escape($symb);
5235:
5236: if (!$namespace) { $namespace=$env{'request.state'}; }
5237: $namespace=~s/\//\_/g;
5238: $namespace=~s/\W//g;
5239:
5240: if (!$domain) { $domain=$env{'user.domain'}; }
5241: if (!$stuname) { $stuname=$env{'user.name'}; }
5242: if ($domain eq 'public' && $stuname eq 'public') {
5243: $stuname=$ENV{'REMOTE_ADDR'};
5244: }
5245: my $path=LONCAPA::tempdir();
5246: my %hash;
5247: if (tie(%hash,'GDBM_File',
5248: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5249: &GDBM_WRCREAT(),0640)) {
5250: foreach my $key (keys(%hash)) {
5251: if ($key=~ /:$symb/) {
5252: delete($hash{$key});
5253: }
5254: }
5255: }
5256: }
5257:
5258: sub tmpstore {
5259: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5260:
5261: if (!$symb) {
5262: $symb=&symbread();
5263: if (!$symb) { $symb= $env{'request.url'}; }
5264: }
5265: $symb=escape($symb);
5266:
5267: if (!$namespace) {
5268: # I don't think we would ever want to store this for a course.
5269: # it seems this will only be used if we don't have a course.
5270: #$namespace=$env{'request.course.id'};
5271: #if (!$namespace) {
5272: $namespace=$env{'request.state'};
5273: #}
5274: }
5275: $namespace=~s/\//\_/g;
5276: $namespace=~s/\W//g;
5277: if (!$domain) { $domain=$env{'user.domain'}; }
5278: if (!$stuname) { $stuname=$env{'user.name'}; }
5279: if ($domain eq 'public' && $stuname eq 'public') {
5280: $stuname=$ENV{'REMOTE_ADDR'};
5281: }
5282: my $now=time;
5283: my %hash;
5284: my $path=LONCAPA::tempdir();
5285: if (tie(%hash,'GDBM_File',
5286: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5287: &GDBM_WRCREAT(),0640)) {
5288: $hash{"version:$symb"}++;
5289: my $version=$hash{"version:$symb"};
5290: my $allkeys='';
5291: foreach my $key (keys(%$storehash)) {
5292: $allkeys.=$key.':';
5293: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5294: }
5295: $hash{"$version:$symb:timestamp"}=$now;
5296: $allkeys.='timestamp';
5297: $hash{"$version:keys:$symb"}=$allkeys;
5298: if (untie(%hash)) {
5299: return 'ok';
5300: } else {
5301: return "error:$!";
5302: }
5303: } else {
5304: return "error:$!";
5305: }
5306: }
5307:
5308: # -----------------------------------------------------------------Temp Restore
5309:
5310: sub tmprestore {
5311: my ($symb,$namespace,$domain,$stuname) = @_;
5312:
5313: if (!$symb) {
5314: $symb=&symbread();
5315: if (!$symb) { $symb= $env{'request.url'}; }
5316: }
5317: $symb=escape($symb);
5318:
5319: if (!$namespace) { $namespace=$env{'request.state'}; }
5320:
5321: if (!$domain) { $domain=$env{'user.domain'}; }
5322: if (!$stuname) { $stuname=$env{'user.name'}; }
5323: if ($domain eq 'public' && $stuname eq 'public') {
5324: $stuname=$ENV{'REMOTE_ADDR'};
5325: }
5326: my %returnhash;
5327: $namespace=~s/\//\_/g;
5328: $namespace=~s/\W//g;
5329: my %hash;
5330: my $path=LONCAPA::tempdir();
5331: if (tie(%hash,'GDBM_File',
5332: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5333: &GDBM_READER(),0640)) {
5334: my $version=$hash{"version:$symb"};
5335: $returnhash{'version'}=$version;
5336: my $scope;
5337: for ($scope=1;$scope<=$version;$scope++) {
5338: my $vkeys=$hash{"$scope:keys:$symb"};
5339: my @keys=split(/:/,$vkeys);
5340: my $key;
5341: $returnhash{"$scope:keys"}=$vkeys;
5342: foreach $key (@keys) {
5343: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5344: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5345: }
5346: }
5347: if (!(untie(%hash))) {
5348: return "error:$!";
5349: }
5350: } else {
5351: return "error:$!";
5352: }
5353: return %returnhash;
5354: }
5355:
5356: # ----------------------------------------------------------------------- Store
5357:
5358: sub store {
5359: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5360: my $home='';
5361:
5362: if ($stuname) { $home=&homeserver($stuname,$domain); }
5363:
5364: $symb=&symbclean($symb);
5365: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5366:
5367: if (!$domain) { $domain=$env{'user.domain'}; }
5368: if (!$stuname) { $stuname=$env{'user.name'}; }
5369:
5370: &devalidate($symb,$stuname,$domain);
5371:
5372: $symb=escape($symb);
5373: if (!$namespace) {
5374: unless ($namespace=$env{'request.course.id'}) {
5375: return '';
5376: }
5377: }
5378: if (!$home) { $home=$env{'user.home'}; }
5379:
5380: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5381: $$storehash{'host'}=$perlvar{'lonHostID'};
5382:
5383: my $namevalue='';
5384: foreach my $key (keys(%$storehash)) {
5385: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5386: }
5387: $namevalue=~s/\&$//;
5388: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5389: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5390: }
5391:
5392: # -------------------------------------------------------------- Critical Store
5393:
5394: sub cstore {
5395: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5396: my $home='';
5397:
5398: if ($stuname) { $home=&homeserver($stuname,$domain); }
5399:
5400: $symb=&symbclean($symb);
5401: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5402:
5403: if (!$domain) { $domain=$env{'user.domain'}; }
5404: if (!$stuname) { $stuname=$env{'user.name'}; }
5405:
5406: &devalidate($symb,$stuname,$domain);
5407:
5408: $symb=escape($symb);
5409: if (!$namespace) {
5410: unless ($namespace=$env{'request.course.id'}) {
5411: return '';
5412: }
5413: }
5414: if (!$home) { $home=$env{'user.home'}; }
5415:
5416: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5417: $$storehash{'host'}=$perlvar{'lonHostID'};
5418:
5419: my $namevalue='';
5420: foreach my $key (keys(%$storehash)) {
5421: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5422: }
5423: $namevalue=~s/\&$//;
5424: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5425: return critical
5426: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5427: }
5428:
5429: # --------------------------------------------------------------------- Restore
5430:
5431: sub restore {
5432: my ($symb,$namespace,$domain,$stuname) = @_;
5433: my $home='';
5434:
5435: if ($stuname) { $home=&homeserver($stuname,$domain); }
5436:
5437: if (!$symb) {
5438: return if ($namespace eq 'courserequests');
5439: unless ($symb=escape(&symbread())) { return ''; }
5440: } else {
5441: unless ($namespace eq 'courserequests') {
5442: $symb=&escape(&symbclean($symb));
5443: }
5444: }
5445: if (!$namespace) {
5446: unless ($namespace=$env{'request.course.id'}) {
5447: return '';
5448: }
5449: }
5450: if (!$domain) { $domain=$env{'user.domain'}; }
5451: if (!$stuname) { $stuname=$env{'user.name'}; }
5452: if (!$home) { $home=$env{'user.home'}; }
5453: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5454:
5455: my %returnhash=();
5456: foreach my $line (split(/\&/,$answer)) {
5457: my ($name,$value)=split(/\=/,$line);
5458: $returnhash{&unescape($name)}=&thaw_unescape($value);
5459: }
5460: my $version;
5461: for ($version=1;$version<=$returnhash{'version'};$version++) {
5462: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5463: $returnhash{$item}=$returnhash{$version.':'.$item};
5464: }
5465: }
5466: return %returnhash;
5467: }
5468:
5469: # ---------------------------------------------------------- Course Description
5470: #
5471: #
5472:
5473: sub coursedescription {
5474: my ($courseid,$args)=@_;
5475: $courseid=~s/^\///;
5476: $courseid=~s/\_/\//g;
5477: my ($cdomain,$cnum)=split(/\//,$courseid);
5478: my $chome=&homeserver($cnum,$cdomain);
5479: my $normalid=$cdomain.'_'.$cnum;
5480: # need to always cache even if we get errors otherwise we keep
5481: # trying and trying and trying to get the course description.
5482: my %envhash=();
5483: my %returnhash=();
5484:
5485: my $expiretime=600;
5486: if ($env{'request.course.id'} eq $normalid) {
5487: $expiretime=120;
5488: }
5489:
5490: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5491: if (!$args->{'freshen_cache'}
5492: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5493: foreach my $key (keys(%env)) {
5494: next if ($key !~ /^\Q$prefix\E(.*)/);
5495: my ($setting) = $1;
5496: $returnhash{$setting} = $env{$key};
5497: }
5498: return %returnhash;
5499: }
5500:
5501: # get the data again
5502:
5503: if (!$args->{'one_time'}) {
5504: $envhash{'course.'.$normalid.'.last_cache'}=time;
5505: }
5506:
5507: if ($chome ne 'no_host') {
5508: %returnhash=&dump('environment',$cdomain,$cnum);
5509: if (!exists($returnhash{'con_lost'})) {
5510: my $username = $env{'user.name'}; # Defult username
5511: if(defined $args->{'user'}) {
5512: $username = $args->{'user'};
5513: }
5514: $returnhash{'home'}= $chome;
5515: $returnhash{'domain'} = $cdomain;
5516: $returnhash{'num'} = $cnum;
5517: if (!defined($returnhash{'type'})) {
5518: $returnhash{'type'} = 'Course';
5519: }
5520: while (my ($name,$value) = each %returnhash) {
5521: $envhash{'course.'.$normalid.'.'.$name}=$value;
5522: }
5523: $returnhash{'url'}=&clutter($returnhash{'url'});
5524: $returnhash{'fn'}=LONCAPA::tempdir() .
5525: $username.'_'.$cdomain.'_'.$cnum;
5526: $envhash{'course.'.$normalid.'.home'}=$chome;
5527: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5528: $envhash{'course.'.$normalid.'.num'}=$cnum;
5529: }
5530: }
5531: if (!$args->{'one_time'}) {
5532: &appenv(\%envhash);
5533: }
5534: return %returnhash;
5535: }
5536:
5537: sub update_released_required {
5538: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5539: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5540: $cid = $env{'request.course.id'};
5541: $cdom = $env{'course.'.$cid.'.domain'};
5542: $cnum = $env{'course.'.$cid.'.num'};
5543: $chome = $env{'course.'.$cid.'.home'};
5544: }
5545: if ($needsrelease) {
5546: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5547: my $needsupdate;
5548: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5549: $needsupdate = 1;
5550: } else {
5551: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5552: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5553: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5554: $needsupdate = 1;
5555: }
5556: }
5557: if ($needsupdate) {
5558: my %needshash = (
5559: 'internal.releaserequired' => $needsrelease,
5560: );
5561: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5562: if ($putresult eq 'ok') {
5563: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5564: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5565: if (ref($crsinfo{$cid}) eq 'HASH') {
5566: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5567: &courseidput($cdom,\%crsinfo,$chome,'notime');
5568: }
5569: }
5570: }
5571: }
5572: return;
5573: }
5574:
5575: # -------------------------------------------------See if a user is privileged
5576:
5577: sub privileged {
5578: my ($username,$domain,$possdomains,$possroles)=@_;
5579: my $now = time;
5580: my $roles;
5581: if (ref($possroles) eq 'ARRAY') {
5582: $roles = $possroles;
5583: } else {
5584: $roles = ['dc','su'];
5585: }
5586: if (ref($possdomains) eq 'ARRAY') {
5587: my %privileged = &privileged_by_domain($possdomains,$roles);
5588: foreach my $dom (@{$possdomains}) {
5589: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5590: (ref($privileged{$dom}) eq 'HASH')) {
5591: foreach my $role (@{$roles}) {
5592: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5593: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5594: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5595: return 1 unless (($end && $end < $now) ||
5596: ($start && $start > $now));
5597: }
5598: }
5599: }
5600: }
5601: }
5602: } else {
5603: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5604: my $now = time;
5605:
5606: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5607: my ($trole, $tend, $tstart) = split(/_/, $role);
5608: if (grep(/^\Q$trole\E$/,@{$roles})) {
5609: return 1 unless ($tend && $tend < $now)
5610: or ($tstart && $tstart > $now);
5611: }
5612: }
5613: }
5614: return 0;
5615: }
5616:
5617: sub privileged_by_domain {
5618: my ($domains,$roles) = @_;
5619: my %privileged = ();
5620: my $cachetime = 60*60*24;
5621: my $now = time;
5622: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5623: return %privileged;
5624: }
5625: foreach my $dom (@{$domains}) {
5626: next if (ref($privileged{$dom}) eq 'HASH');
5627: my $needroles;
5628: foreach my $role (@{$roles}) {
5629: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5630: if (defined($cached)) {
5631: if (ref($result) eq 'HASH') {
5632: $privileged{$dom}{$role} = $result;
5633: }
5634: } else {
5635: $needroles = 1;
5636: }
5637: }
5638: if ($needroles) {
5639: my %dompersonnel = &get_domain_roles($dom,$roles);
5640: $privileged{$dom} = {};
5641: foreach my $server (keys(%dompersonnel)) {
5642: if (ref($dompersonnel{$server}) eq 'HASH') {
5643: foreach my $item (keys(%{$dompersonnel{$server}})) {
5644: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5645: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5646: next if ($end && $end < $now);
5647: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5648: $dompersonnel{$server}{$item};
5649: }
5650: }
5651: }
5652: if (ref($privileged{$dom}) eq 'HASH') {
5653: foreach my $role (@{$roles}) {
5654: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5655: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5656: } else {
5657: my %hash = ();
5658: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5659: }
5660: }
5661: }
5662: }
5663: }
5664: return %privileged;
5665: }
5666:
5667: # -------------------------------------------------------- Get user privileges
5668:
5669: sub rolesinit {
5670: my ($domain, $username) = @_;
5671: my %userroles = ('user.login.time' => time);
5672: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5673:
5674: # firstaccess and timerinterval are related to timed maps/resources.
5675: # also, blocking can be triggered by an activating timer
5676: # it's saved in the user's %env.
5677: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5678: my %timerinterval = &dump('timerinterval', $domain, $username);
5679: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5680: %timerintchk, %timerintenv);
5681:
5682: foreach my $key (keys(%firstaccess)) {
5683: my ($cid, $rest) = split(/\0/, $key);
5684: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5685: }
5686:
5687: foreach my $key (keys(%timerinterval)) {
5688: my ($cid,$rest) = split(/\0/,$key);
5689: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5690: }
5691:
5692: my %allroles=();
5693: my %allgroups=();
5694:
5695: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5696: my $role = $rolesdump{$area};
5697: $area =~ s/\_\w\w$//;
5698:
5699: my ($trole, $tend, $tstart, $group_privs);
5700:
5701: if ($role =~ /^cr/) {
5702: # Custom role, defined by a user
5703: # e.g., user.role.cr/msu/smith/mynewrole
5704: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5705: $trole = $1;
5706: ($tend, $tstart) = split('_', $2);
5707: } else {
5708: $trole = $role;
5709: }
5710: } elsif ($role =~ m|^gr/|) {
5711: # Role of member in a group, defined within a course/community
5712: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5713: ($trole, $tend, $tstart) = split(/_/, $role);
5714: next if $tstart eq '-1';
5715: ($trole, $group_privs) = split(/\//, $trole);
5716: $group_privs = &unescape($group_privs);
5717: } else {
5718: # Just a normal role, defined in roles.tab
5719: ($trole, $tend, $tstart) = split(/_/,$role);
5720: }
5721:
5722: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5723: $username);
5724: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5725:
5726: # role expired or not available yet?
5727: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5728: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5729:
5730: next if $area eq '' or $trole eq '';
5731:
5732: my $spec = "$trole.$area";
5733: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5734:
5735: if ($trole =~ /^cr\//) {
5736: # Custom role, defined by a user
5737: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5738: } elsif ($trole eq 'gr') {
5739: # Role of a member in a group, defined within a course/community
5740: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5741: next;
5742: } else {
5743: # Normal role, defined in roles.tab
5744: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5745: }
5746:
5747: my $cid = $tdomain.'_'.$trest;
5748: unless ($firstaccchk{$cid}) {
5749: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5750: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5751: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5752: $coursetimerstarts{$cid}{$item};
5753: }
5754: }
5755: $firstaccchk{$cid} = 1;
5756: }
5757: unless ($timerintchk{$cid}) {
5758: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5759: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5760: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5761: $coursetimerintervals{$cid}{$item};
5762: }
5763: }
5764: $timerintchk{$cid} = 1;
5765: }
5766: }
5767:
5768: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5769: \%allroles, \%allgroups);
5770: $env{'user.adv'} = $userroles{'user.adv'};
5771:
5772: return (\%userroles,\%firstaccenv,\%timerintenv);
5773: }
5774:
5775: sub set_arearole {
5776: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5777: unless ($nolog) {
5778: # log the associated role with the area
5779: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5780: }
5781: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5782: }
5783:
5784: sub custom_roleprivs {
5785: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5786: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5787: my $homsvr = &homeserver($rauthor,$rdomain);
5788: if (&hostname($homsvr) ne '') {
5789: my ($rdummy,$roledef)=
5790: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5791: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5792: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5793: if (defined($syspriv)) {
5794: if ($trest =~ /^$match_community$/) {
5795: $syspriv =~ s/bre\&S//;
5796: }
5797: $$allroles{'cm./'}.=':'.$syspriv;
5798: $$allroles{$spec.'./'}.=':'.$syspriv;
5799: }
5800: if ($tdomain ne '') {
5801: if (defined($dompriv)) {
5802: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5803: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5804: }
5805: if (($trest ne '') && (defined($coursepriv))) {
5806: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
5807: my $rolename = $1;
5808: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
5809: }
5810: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5811: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5812: }
5813: }
5814: }
5815: }
5816: }
5817:
5818: sub course_adhocrole_privs {
5819: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
5820: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
5821: if ($overrides{"internal.adhocpriv.$rolename"}) {
5822: my (%currprivs,%storeprivs);
5823: foreach my $item (split(/:/,$coursepriv)) {
5824: my ($priv,$restrict) = split(/\&/,$item);
5825: $currprivs{$priv} = $restrict;
5826: }
5827: my (%possadd,%possremove,%full);
5828: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
5829: my ($priv,$restrict)=split(/\&/,$item);
5830: $full{$priv} = $restrict;
5831: }
5832: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
5833: next if ($item eq '');
5834: my ($rule,$rest) = split(/=/,$item);
5835: next unless (($rule eq 'off') || ($rule eq 'on'));
5836: foreach my $priv (split(/:/,$rest)) {
5837: if ($priv ne '') {
5838: if ($rule eq 'off') {
5839: $possremove{$priv} = 1;
5840: } else {
5841: $possadd{$priv} = 1;
5842: }
5843: }
5844: }
5845: }
5846: foreach my $priv (sort(keys(%full))) {
5847: if (exists($currprivs{$priv})) {
5848: unless (exists($possremove{$priv})) {
5849: $storeprivs{$priv} = $currprivs{$priv};
5850: }
5851: } elsif (exists($possadd{$priv})) {
5852: $storeprivs{$priv} = $full{$priv};
5853: }
5854: }
5855: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
5856: }
5857: return $coursepriv;
5858: }
5859:
5860: sub group_roleprivs {
5861: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5862: my $access = 1;
5863: my $now = time;
5864: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5865: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5866: if ($access) {
5867: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5868: $$allgroups{$course}{$group} .=':'.$group_privs;
5869: }
5870: }
5871:
5872: sub standard_roleprivs {
5873: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5874: if (defined($pr{$trole.':s'})) {
5875: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5876: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5877: }
5878: if ($tdomain ne '') {
5879: if (defined($pr{$trole.':d'})) {
5880: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5881: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5882: }
5883: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5884: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5885: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5886: }
5887: }
5888: }
5889:
5890: sub set_userprivs {
5891: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5892: my $author=0;
5893: my $adv=0;
5894: my %grouproles = ();
5895: if (keys(%{$allgroups}) > 0) {
5896: my @groupkeys;
5897: foreach my $role (keys(%{$allroles})) {
5898: push(@groupkeys,$role);
5899: }
5900: if (ref($groups_roles) eq 'HASH') {
5901: foreach my $key (keys(%{$groups_roles})) {
5902: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5903: push(@groupkeys,$key);
5904: }
5905: }
5906: }
5907: if (@groupkeys > 0) {
5908: foreach my $role (@groupkeys) {
5909: my ($trole,$area,$sec,$extendedarea);
5910: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5911: $trole = $1;
5912: $area = $2;
5913: $sec = $3;
5914: $extendedarea = $area.$sec;
5915: if (exists($$allgroups{$area})) {
5916: foreach my $group (keys(%{$$allgroups{$area}})) {
5917: my $spec = $trole.'.'.$extendedarea;
5918: $grouproles{$spec.'.'.$area.'/'.$group} =
5919: $$allgroups{$area}{$group};
5920: }
5921: }
5922: }
5923: }
5924: }
5925: }
5926: foreach my $group (keys(%grouproles)) {
5927: $$allroles{$group} = $grouproles{$group};
5928: }
5929: foreach my $role (keys(%{$allroles})) {
5930: my %thesepriv;
5931: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5932: foreach my $item (split(/:/,$$allroles{$role})) {
5933: if ($item ne '') {
5934: my ($privilege,$restrictions)=split(/&/,$item);
5935: if ($restrictions eq '') {
5936: $thesepriv{$privilege}='F';
5937: } elsif ($thesepriv{$privilege} ne 'F') {
5938: $thesepriv{$privilege}.=$restrictions;
5939: }
5940: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5941: }
5942: }
5943: my $thesestr='';
5944: foreach my $priv (sort(keys(%thesepriv))) {
5945: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5946: }
5947: $userroles->{'user.priv.'.$role} = $thesestr;
5948: }
5949: return ($author,$adv);
5950: }
5951:
5952: sub role_status {
5953: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5954: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5955: my ($one,$two) = split(m{\./},$rolekey,2);
5956: (undef,undef,$$role) = split(/\./,$one,3);
5957: unless (!defined($$role) || $$role eq '') {
5958: $$where = '/'.$two;
5959: $$trolecode=$$role.'.'.$$where;
5960: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5961: $$tstatus='is';
5962: if ($$tstart && $$tstart>$update) {
5963: $$tstatus='future';
5964: if ($$tstart<$now) {
5965: if ($$tstart && $$tstart>$refresh) {
5966: if (($$where ne '') && ($$role ne '')) {
5967: my (%allroles,%allgroups,$group_privs,
5968: %groups_roles,@rolecodes);
5969: my %userroles = (
5970: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5971: );
5972: @rolecodes = ('cm');
5973: my $spec=$$role.'.'.$$where;
5974: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5975: if ($$role =~ /^cr\//) {
5976: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5977: push(@rolecodes,'cr');
5978: } elsif ($$role eq 'gr') {
5979: push(@rolecodes,$$role);
5980: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5981: $env{'user.name'});
5982: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5983: (undef,my $group_privs) = split(/\//,$trole);
5984: $group_privs = &unescape($group_privs);
5985: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5986: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5987: &get_groups_roles($tdomain,$trest,
5988: \%course_roles,\@rolecodes,
5989: \%groups_roles);
5990: } else {
5991: push(@rolecodes,$$role);
5992: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5993: }
5994: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5995: &appenv(\%userroles,\@rolecodes);
5996: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5997: }
5998: }
5999: $$tstatus = 'is';
6000: }
6001: }
6002: if ($$tend) {
6003: if ($$tend<$update) {
6004: $$tstatus='expired';
6005: } elsif ($$tend<$now) {
6006: $$tstatus='will_not';
6007: }
6008: }
6009: }
6010: }
6011: }
6012:
6013: sub get_groups_roles {
6014: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6015: return unless((ref($cdom_courseroles) eq 'HASH') &&
6016: (ref($rolecodes) eq 'ARRAY') &&
6017: (ref($groups_roles) eq 'HASH'));
6018: if (keys(%{$cdom_courseroles}) > 0) {
6019: my ($cnum) = ($rest =~ /^($match_courseid)/);
6020: if ($cdom ne '' && $cnum ne '') {
6021: foreach my $key (keys(%{$cdom_courseroles})) {
6022: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6023: my $crsrole = $1;
6024: my $crssec = $2;
6025: if ($crsrole =~ /^cr/) {
6026: unless (grep(/^cr$/,@{$rolecodes})) {
6027: push(@{$rolecodes},'cr');
6028: }
6029: } else {
6030: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6031: push(@{$rolecodes},$crsrole);
6032: }
6033: }
6034: my $rolekey = "$crsrole./$cdom/$cnum";
6035: if ($crssec ne '') {
6036: $rolekey .= "/$crssec";
6037: }
6038: $rolekey .= './';
6039: $groups_roles->{$rolekey} = $rolecodes;
6040: }
6041: }
6042: }
6043: }
6044: return;
6045: }
6046:
6047: sub delete_env_groupprivs {
6048: my ($where,$courseroles,$possroles) = @_;
6049: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6050: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6051: unless (ref($courseroles->{$udom}) eq 'HASH') {
6052: %{$courseroles->{$udom}} =
6053: &get_my_roles('','','userroles',['active'],
6054: $possroles,[$udom],1);
6055: }
6056: if (ref($courseroles->{$udom}) eq 'HASH') {
6057: foreach my $item (keys(%{$courseroles->{$udom}})) {
6058: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6059: my $area = '/'.$cdom.'/'.$cnum;
6060: my $privkey = "user.priv.$crsrole.$area";
6061: if ($crssec ne '') {
6062: $privkey .= '/'.$crssec;
6063: }
6064: $privkey .= ".$area/$group";
6065: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6066: }
6067: }
6068: return;
6069: }
6070:
6071: sub check_adhoc_privs {
6072: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6073: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6074: if ($sec) {
6075: $cckey .= '/'.$sec;
6076: }
6077: my $setprivs;
6078: if ($env{$cckey}) {
6079: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6080: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6081: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6082: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6083: $setprivs = 1;
6084: }
6085: } else {
6086: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6087: $setprivs = 1;
6088: }
6089: return $setprivs;
6090: }
6091:
6092: sub set_adhoc_privileges {
6093: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6094: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6095: my $area = '/'.$dcdom.'/'.$pickedcourse;
6096: if ($sec ne '') {
6097: $area .= '/'.$sec;
6098: }
6099: my $spec = $role.'.'.$area;
6100: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6101: $env{'user.name'},1);
6102: my %rolehash = ();
6103: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6104: my $rolename = $1;
6105: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6106: my %domdef = &get_domain_defaults($dcdom);
6107: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6108: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6109: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6110: }
6111: }
6112: } else {
6113: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6114: }
6115: my ($author,$adv)= &set_userprivs(\%userroles,\%rolehash);
6116: &appenv(\%userroles,[$role,'cm']);
6117: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
6118: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6119: &appenv( {'request.role' => $spec,
6120: 'request.role.domain' => $dcdom,
6121: 'request.course.sec' => $sec,
6122: }
6123: );
6124: my $tadv=0;
6125: if (&allowed('adv') eq 'F') { $tadv=1; }
6126: &appenv({'request.role.adv' => $tadv});
6127: }
6128: }
6129:
6130: # --------------------------------------------------------------- get interface
6131:
6132: sub get {
6133: my ($namespace,$storearr,$udomain,$uname)=@_;
6134: my $items='';
6135: foreach my $item (@$storearr) {
6136: $items.=&escape($item).'&';
6137: }
6138: $items=~s/\&$//;
6139: if (!$udomain) { $udomain=$env{'user.domain'}; }
6140: if (!$uname) { $uname=$env{'user.name'}; }
6141: my $uhome=&homeserver($uname,$udomain);
6142:
6143: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6144: my @pairs=split(/\&/,$rep);
6145: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6146: return @pairs;
6147: }
6148: my %returnhash=();
6149: my $i=0;
6150: foreach my $item (@$storearr) {
6151: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6152: $i++;
6153: }
6154: return %returnhash;
6155: }
6156:
6157: # --------------------------------------------------------------- del interface
6158:
6159: sub del {
6160: my ($namespace,$storearr,$udomain,$uname)=@_;
6161: my $items='';
6162: foreach my $item (@$storearr) {
6163: $items.=&escape($item).'&';
6164: }
6165:
6166: $items=~s/\&$//;
6167: if (!$udomain) { $udomain=$env{'user.domain'}; }
6168: if (!$uname) { $uname=$env{'user.name'}; }
6169: my $uhome=&homeserver($uname,$udomain);
6170: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6171: }
6172:
6173: # -------------------------------------------------------------- dump interface
6174:
6175: sub unserialize {
6176: my ($rep, $escapedkeys) = @_;
6177:
6178: return {} if $rep =~ /^error/;
6179:
6180: my %returnhash=();
6181: foreach my $item (split(/\&/,$rep)) {
6182: my ($key, $value) = split(/=/, $item, 2);
6183: $key = unescape($key) unless $escapedkeys;
6184: next if $key =~ /^error: 2 /;
6185: $returnhash{$key} = &thaw_unescape($value);
6186: }
6187: #return %returnhash;
6188: return \%returnhash;
6189: }
6190:
6191: # see Lond::dump_with_regexp
6192: # if $escapedkeys hash keys won't get unescaped.
6193: sub dump {
6194: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6195: if (!$udomain) { $udomain=$env{'user.domain'}; }
6196: if (!$uname) { $uname=$env{'user.name'}; }
6197: my $uhome=&homeserver($uname,$udomain);
6198:
6199: if ($regexp) {
6200: $regexp=&escape($regexp);
6201: } else {
6202: $regexp='.';
6203: }
6204: if (grep { $_ eq $uhome } current_machine_ids()) {
6205: # user is hosted on this machine
6206: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6207: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6208: return %{unserialize($reply, $escapedkeys)};
6209: }
6210: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6211: my @pairs=split(/\&/,$rep);
6212: my %returnhash=();
6213: if (!($rep =~ /^error/ )) {
6214: foreach my $item (@pairs) {
6215: my ($key,$value)=split(/=/,$item,2);
6216: $key = unescape($key) unless $escapedkeys;
6217: #$key = &unescape($key);
6218: next if ($key =~ /^error: 2 /);
6219: $returnhash{$key}=&thaw_unescape($value);
6220: }
6221: }
6222: return %returnhash;
6223: }
6224:
6225:
6226: # --------------------------------------------------------- dumpstore interface
6227:
6228: sub dumpstore {
6229: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6230: # same as dump but keys must be escaped. They may contain colon separated
6231: # lists of values that may themself contain colons (e.g. symbs).
6232: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6233: }
6234:
6235: # -------------------------------------------------------------- keys interface
6236:
6237: sub getkeys {
6238: my ($namespace,$udomain,$uname)=@_;
6239: if (!$udomain) { $udomain=$env{'user.domain'}; }
6240: if (!$uname) { $uname=$env{'user.name'}; }
6241: my $uhome=&homeserver($uname,$udomain);
6242: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6243: my @keyarray=();
6244: foreach my $key (split(/\&/,$rep)) {
6245: next if ($key =~ /^error: 2 /);
6246: push(@keyarray,&unescape($key));
6247: }
6248: return @keyarray;
6249: }
6250:
6251: # --------------------------------------------------------------- currentdump
6252: sub currentdump {
6253: my ($courseid,$sdom,$sname)=@_;
6254: $courseid = $env{'request.course.id'} if (! defined($courseid));
6255: $sdom = $env{'user.domain'} if (! defined($sdom));
6256: $sname = $env{'user.name'} if (! defined($sname));
6257: my $uhome = &homeserver($sname,$sdom);
6258: my $rep;
6259:
6260: if (grep { $_ eq $uhome } current_machine_ids()) {
6261: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6262: $courseid)));
6263: } else {
6264: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6265: }
6266:
6267: return if ($rep =~ /^(error:|no_such_host)/);
6268: #
6269: my %returnhash=();
6270: #
6271: if ($rep eq "unknown_cmd") {
6272: # an old lond will not know currentdump
6273: # Do a dump and make it look like a currentdump
6274: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6275: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6276: my %hash = @tmp;
6277: @tmp=();
6278: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6279: } else {
6280: my @pairs=split(/\&/,$rep);
6281: foreach my $pair (@pairs) {
6282: my ($key,$value)=split(/=/,$pair,2);
6283: my ($symb,$param) = split(/:/,$key);
6284: $returnhash{&unescape($symb)}->{&unescape($param)} =
6285: &thaw_unescape($value);
6286: }
6287: }
6288: return %returnhash;
6289: }
6290:
6291: sub convert_dump_to_currentdump{
6292: my %hash = %{shift()};
6293: my %returnhash;
6294: # Code ripped from lond, essentially. The only difference
6295: # here is the unescaping done by lonnet::dump(). Conceivably
6296: # we might run in to problems with parameter names =~ /^v\./
6297: while (my ($key,$value) = each(%hash)) {
6298: my ($v,$symb,$param) = split(/:/,$key);
6299: $symb = &unescape($symb);
6300: $param = &unescape($param);
6301: next if ($v eq 'version' || $symb eq 'keys');
6302: next if (exists($returnhash{$symb}) &&
6303: exists($returnhash{$symb}->{$param}) &&
6304: $returnhash{$symb}->{'v.'.$param} > $v);
6305: $returnhash{$symb}->{$param}=$value;
6306: $returnhash{$symb}->{'v.'.$param}=$v;
6307: }
6308: #
6309: # Remove all of the keys in the hashes which keep track of
6310: # the version of the parameter.
6311: while (my ($symb,$param_hash) = each(%returnhash)) {
6312: # use a foreach because we are going to delete from the hash.
6313: foreach my $key (keys(%$param_hash)) {
6314: delete($param_hash->{$key}) if ($key =~ /^v\./);
6315: }
6316: }
6317: return \%returnhash;
6318: }
6319:
6320: # ------------------------------------------------------ critical inc interface
6321:
6322: sub cinc {
6323: return &inc(@_,'critical');
6324: }
6325:
6326: # --------------------------------------------------------------- inc interface
6327:
6328: sub inc {
6329: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6330: if (!$udomain) { $udomain=$env{'user.domain'}; }
6331: if (!$uname) { $uname=$env{'user.name'}; }
6332: my $uhome=&homeserver($uname,$udomain);
6333: my $items='';
6334: if (! ref($store)) {
6335: # got a single value, so use that instead
6336: $items = &escape($store).'=&';
6337: } elsif (ref($store) eq 'SCALAR') {
6338: $items = &escape($$store).'=&';
6339: } elsif (ref($store) eq 'ARRAY') {
6340: $items = join('=&',map {&escape($_);} @{$store});
6341: } elsif (ref($store) eq 'HASH') {
6342: while (my($key,$value) = each(%{$store})) {
6343: $items.= &escape($key).'='.&escape($value).'&';
6344: }
6345: }
6346: $items=~s/\&$//;
6347: if ($critical) {
6348: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6349: } else {
6350: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6351: }
6352: }
6353:
6354: # --------------------------------------------------------------- put interface
6355:
6356: sub put {
6357: my ($namespace,$storehash,$udomain,$uname)=@_;
6358: if (!$udomain) { $udomain=$env{'user.domain'}; }
6359: if (!$uname) { $uname=$env{'user.name'}; }
6360: my $uhome=&homeserver($uname,$udomain);
6361: my $items='';
6362: foreach my $item (keys(%$storehash)) {
6363: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6364: }
6365: $items=~s/\&$//;
6366: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6367: }
6368:
6369: # ------------------------------------------------------------ newput interface
6370:
6371: sub newput {
6372: my ($namespace,$storehash,$udomain,$uname)=@_;
6373: if (!$udomain) { $udomain=$env{'user.domain'}; }
6374: if (!$uname) { $uname=$env{'user.name'}; }
6375: my $uhome=&homeserver($uname,$udomain);
6376: my $items='';
6377: foreach my $key (keys(%$storehash)) {
6378: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6379: }
6380: $items=~s/\&$//;
6381: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6382: }
6383:
6384: # --------------------------------------------------------- putstore interface
6385:
6386: sub putstore {
6387: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6388: if (!$udomain) { $udomain=$env{'user.domain'}; }
6389: if (!$uname) { $uname=$env{'user.name'}; }
6390: my $uhome=&homeserver($uname,$udomain);
6391: my $items='';
6392: foreach my $key (keys(%$storehash)) {
6393: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6394: }
6395: $items=~s/\&$//;
6396: my $esc_symb=&escape($symb);
6397: my $esc_v=&escape($version);
6398: my $reply =
6399: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6400: $uhome);
6401: if (($tolog) && ($reply eq 'ok')) {
6402: my $namevalue='';
6403: foreach my $key (keys(%{$storehash})) {
6404: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6405: }
6406: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6407: '&host='.&escape($perlvar{'lonHostID'}).
6408: '&version='.$esc_v.
6409: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6410: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6411: }
6412: if ($reply eq 'unknown_cmd') {
6413: # gfall back to way things use to be done
6414: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6415: $uname);
6416: }
6417: return $reply;
6418: }
6419:
6420: sub old_putstore {
6421: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6422: if (!$udomain) { $udomain=$env{'user.domain'}; }
6423: if (!$uname) { $uname=$env{'user.name'}; }
6424: my $uhome=&homeserver($uname,$udomain);
6425: my %newstorehash;
6426: foreach my $item (keys(%$storehash)) {
6427: my $key = $version.':'.&escape($symb).':'.$item;
6428: $newstorehash{$key} = $storehash->{$item};
6429: }
6430: my $items='';
6431: my %allitems = ();
6432: foreach my $item (keys(%newstorehash)) {
6433: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6434: my $key = $1.':keys:'.$2;
6435: $allitems{$key} .= $3.':';
6436: }
6437: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6438: }
6439: foreach my $item (keys(%allitems)) {
6440: $allitems{$item} =~ s/\:$//;
6441: $items.= $item.'='.$allitems{$item}.'&';
6442: }
6443: $items=~s/\&$//;
6444: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6445: }
6446:
6447: # ------------------------------------------------------ critical put interface
6448:
6449: sub cput {
6450: my ($namespace,$storehash,$udomain,$uname)=@_;
6451: if (!$udomain) { $udomain=$env{'user.domain'}; }
6452: if (!$uname) { $uname=$env{'user.name'}; }
6453: my $uhome=&homeserver($uname,$udomain);
6454: my $items='';
6455: foreach my $item (keys(%$storehash)) {
6456: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6457: }
6458: $items=~s/\&$//;
6459: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6460: }
6461:
6462: # -------------------------------------------------------------- eget interface
6463:
6464: sub eget {
6465: my ($namespace,$storearr,$udomain,$uname)=@_;
6466: my $items='';
6467: foreach my $item (@$storearr) {
6468: $items.=&escape($item).'&';
6469: }
6470: $items=~s/\&$//;
6471: if (!$udomain) { $udomain=$env{'user.domain'}; }
6472: if (!$uname) { $uname=$env{'user.name'}; }
6473: my $uhome=&homeserver($uname,$udomain);
6474: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6475: my @pairs=split(/\&/,$rep);
6476: my %returnhash=();
6477: my $i=0;
6478: foreach my $item (@$storearr) {
6479: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6480: $i++;
6481: }
6482: return %returnhash;
6483: }
6484:
6485: # ------------------------------------------------------------ tmpput interface
6486: sub tmpput {
6487: my ($storehash,$server,$context)=@_;
6488: my $items='';
6489: foreach my $item (keys(%$storehash)) {
6490: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6491: }
6492: $items=~s/\&$//;
6493: if (defined($context)) {
6494: $items .= ':'.&escape($context);
6495: }
6496: return &reply("tmpput:$items",$server);
6497: }
6498:
6499: # ------------------------------------------------------------ tmpget interface
6500: sub tmpget {
6501: my ($token,$server)=@_;
6502: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6503: my $rep=&reply("tmpget:$token",$server);
6504: my %returnhash;
6505: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6506: return %returnhash;
6507: }
6508: foreach my $item (split(/\&/,$rep)) {
6509: my ($key,$value)=split(/=/,$item);
6510: $returnhash{&unescape($key)}=&thaw_unescape($value);
6511: }
6512: return %returnhash;
6513: }
6514:
6515: # ------------------------------------------------------------ tmpdel interface
6516: sub tmpdel {
6517: my ($token,$server)=@_;
6518: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6519: return &reply("tmpdel:$token",$server);
6520: }
6521:
6522: # ------------------------------------------------------------ get_timebased_id
6523:
6524: sub get_timebased_id {
6525: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6526: $maxtries) = @_;
6527: my ($newid,$error,$dellock);
6528: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6529: return ('','ok','invalid call to get suffix');
6530: }
6531:
6532: # set defaults for any optional args for which values were not supplied
6533: if ($who eq '') {
6534: $who = $env{'user.name'}.':'.$env{'user.domain'};
6535: }
6536: if (!$locktries) {
6537: $locktries = 3;
6538: }
6539: if (!$maxtries) {
6540: $maxtries = 10;
6541: }
6542:
6543: if (($cdom eq '') || ($cnum eq '')) {
6544: if ($env{'request.course.id'}) {
6545: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6546: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6547: }
6548: if (($cdom eq '') || ($cnum eq '')) {
6549: return ('','ok','call to get suffix not in course context');
6550: }
6551: }
6552:
6553: # construct locking item
6554: my $lockhash = {
6555: $prefix."\0".'locked_'.$keyid => $who,
6556: };
6557: my $tries = 0;
6558:
6559: # attempt to get lock on nohist_$namespace file
6560: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6561: while (($gotlock ne 'ok') && $tries <$locktries) {
6562: $tries ++;
6563: sleep 1;
6564: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6565: }
6566:
6567: # attempt to get unique identifier, based on current timestamp
6568: if ($gotlock eq 'ok') {
6569: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6570: my $id = time;
6571: $newid = $id;
6572: if ($idtype eq 'addcode') {
6573: $newid .= &sixnum_code();
6574: }
6575: my $idtries = 0;
6576: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6577: if ($idtype eq 'concat') {
6578: $newid = $id.$idtries;
6579: } elsif ($idtype eq 'addcode') {
6580: $newid = $newid.&sixnum_code();
6581: } else {
6582: $newid ++;
6583: }
6584: $idtries ++;
6585: }
6586: if (!exists($inuse{$prefix."\0".$newid})) {
6587: my %new_item = (
6588: $prefix."\0".$newid => $who,
6589: );
6590: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6591: $cdom,$cnum);
6592: if ($putresult ne 'ok') {
6593: undef($newid);
6594: $error = 'error saving new item: '.$putresult;
6595: }
6596: } else {
6597: undef($newid);
6598: $error = ('error: no unique suffix available for the new item ');
6599: }
6600: # remove lock
6601: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6602: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6603: } else {
6604: $error = "error: could not obtain lockfile\n";
6605: $dellock = 'ok';
6606: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6607: $dellock = 'nolock';
6608: }
6609: }
6610: return ($newid,$dellock,$error);
6611: }
6612:
6613: sub sixnum_code {
6614: my $code;
6615: for (0..6) {
6616: $code .= int( rand(9) );
6617: }
6618: return $code;
6619: }
6620:
6621: # -------------------------------------------------- portfolio access checking
6622:
6623: sub portfolio_access {
6624: my ($requrl,$clientip) = @_;
6625: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6626: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6627: if ($result) {
6628: my %setters;
6629: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6630: my ($startblock,$endblock) =
6631: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6632: if ($startblock && $endblock) {
6633: return 'B';
6634: }
6635: } else {
6636: my ($startblock,$endblock) =
6637: &Apache::loncommon::blockcheck(\%setters,'port');
6638: if ($startblock && $endblock) {
6639: return 'B';
6640: }
6641: }
6642: }
6643: if ($result eq 'ok') {
6644: return 'F';
6645: } elsif ($result =~ /^[^:]+:guest_/) {
6646: return 'A';
6647: }
6648: return '';
6649: }
6650:
6651: sub get_portfolio_access {
6652: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6653:
6654: if (!ref($access_hash)) {
6655: my $current_perms = &get_portfile_permissions($udom,$unum);
6656: my %access_controls = &get_access_controls($current_perms,$group,
6657: $file_name);
6658: $access_hash = $access_controls{$file_name};
6659: }
6660:
6661: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6662: my $now = time;
6663: if (ref($access_hash) eq 'HASH') {
6664: foreach my $key (keys(%{$access_hash})) {
6665: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6666: if ($start > $now) {
6667: next;
6668: }
6669: if ($end && $end<$now) {
6670: next;
6671: }
6672: if ($scope eq 'public') {
6673: $public = $key;
6674: last;
6675: } elsif ($scope eq 'guest') {
6676: $guest = $key;
6677: } elsif ($scope eq 'domains') {
6678: push(@domains,$key);
6679: } elsif ($scope eq 'users') {
6680: push(@users,$key);
6681: } elsif ($scope eq 'course') {
6682: push(@courses,$key);
6683: } elsif ($scope eq 'group') {
6684: push(@groups,$key);
6685: } elsif ($scope eq 'ip') {
6686: push(@ips,$key);
6687: }
6688: }
6689: if ($public) {
6690: return 'ok';
6691: } elsif (@ips > 0) {
6692: my $allowed;
6693: foreach my $ipkey (@ips) {
6694: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6695: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6696: $allowed = 1;
6697: last;
6698: }
6699: }
6700: }
6701: if ($allowed) {
6702: return 'ok';
6703: }
6704: }
6705: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6706: if ($guest) {
6707: return $guest;
6708: }
6709: } else {
6710: if (@domains > 0) {
6711: foreach my $domkey (@domains) {
6712: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6713: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6714: return 'ok';
6715: }
6716: }
6717: }
6718: }
6719: if (@users > 0) {
6720: foreach my $userkey (@users) {
6721: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6722: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6723: if (ref($item) eq 'HASH') {
6724: if (($item->{'uname'} eq $env{'user.name'}) &&
6725: ($item->{'udom'} eq $env{'user.domain'})) {
6726: return 'ok';
6727: }
6728: }
6729: }
6730: }
6731: }
6732: }
6733: my %roleshash;
6734: my @courses_and_groups = @courses;
6735: push(@courses_and_groups,@groups);
6736: if (@courses_and_groups > 0) {
6737: my (%allgroups,%allroles);
6738: my ($start,$end,$role,$sec,$group);
6739: foreach my $envkey (%env) {
6740: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6741: my $cid = $2.'_'.$3;
6742: if ($1 eq 'gr') {
6743: $group = $4;
6744: $allgroups{$cid}{$group} = $env{$envkey};
6745: } else {
6746: if ($4 eq '') {
6747: $sec = 'none';
6748: } else {
6749: $sec = $4;
6750: }
6751: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6752: }
6753: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6754: my $cid = $2.'_'.$3;
6755: if ($4 eq '') {
6756: $sec = 'none';
6757: } else {
6758: $sec = $4;
6759: }
6760: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6761: }
6762: }
6763: if (keys(%allroles) == 0) {
6764: return;
6765: }
6766: foreach my $key (@courses_and_groups) {
6767: my %content = %{$$access_hash{$key}};
6768: my $cnum = $content{'number'};
6769: my $cdom = $content{'domain'};
6770: my $cid = $cdom.'_'.$cnum;
6771: if (!exists($allroles{$cid})) {
6772: next;
6773: }
6774: foreach my $role_id (keys(%{$content{'roles'}})) {
6775: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6776: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6777: my @status = @{$content{'roles'}{$role_id}{'access'}};
6778: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6779: foreach my $role (keys(%{$allroles{$cid}})) {
6780: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6781: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6782: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6783: if (grep/^all$/,@sections) {
6784: return 'ok';
6785: } else {
6786: if (grep/^$sec$/,@sections) {
6787: return 'ok';
6788: }
6789: }
6790: }
6791: }
6792: if (keys(%{$allgroups{$cid}}) == 0) {
6793: if (grep/^none$/,@groups) {
6794: return 'ok';
6795: }
6796: } else {
6797: if (grep/^all$/,@groups) {
6798: return 'ok';
6799: }
6800: foreach my $group (keys(%{$allgroups{$cid}})) {
6801: if (grep/^$group$/,@groups) {
6802: return 'ok';
6803: }
6804: }
6805: }
6806: }
6807: }
6808: }
6809: }
6810: }
6811: if ($guest) {
6812: return $guest;
6813: }
6814: }
6815: }
6816: return;
6817: }
6818:
6819: sub course_group_datechecker {
6820: my ($dates,$now,$status) = @_;
6821: my ($start,$end) = split(/\./,$dates);
6822: if (!$start && !$end) {
6823: return 'ok';
6824: }
6825: if (grep/^active$/,@{$status}) {
6826: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6827: return 'ok';
6828: }
6829: }
6830: if (grep/^previous$/,@{$status}) {
6831: if ($end > $now ) {
6832: return 'ok';
6833: }
6834: }
6835: if (grep/^future$/,@{$status}) {
6836: if ($start > $now) {
6837: return 'ok';
6838: }
6839: }
6840: return;
6841: }
6842:
6843: sub parse_portfolio_url {
6844: my ($url) = @_;
6845:
6846: my ($type,$udom,$unum,$group,$file_name);
6847:
6848: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6849: $type = 1;
6850: $udom = $1;
6851: $unum = $2;
6852: $file_name = $3;
6853: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6854: $type = 2;
6855: $udom = $1;
6856: $unum = $2;
6857: $group = $3;
6858: $file_name = $3.'/'.$4;
6859: }
6860: if (wantarray) {
6861: return ($type,$udom,$unum,$file_name,$group);
6862: }
6863: return $type;
6864: }
6865:
6866: sub is_portfolio_url {
6867: my ($url) = @_;
6868: return scalar(&parse_portfolio_url($url));
6869: }
6870:
6871: sub is_portfolio_file {
6872: my ($file) = @_;
6873: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6874: return 1;
6875: }
6876: return;
6877: }
6878:
6879: sub usertools_access {
6880: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6881: my ($access,%tools);
6882: if ($context eq '') {
6883: $context = 'tools';
6884: }
6885: if ($context eq 'requestcourses') {
6886: %tools = (
6887: official => 1,
6888: unofficial => 1,
6889: community => 1,
6890: textbook => 1,
6891: placement => 1,
6892: );
6893: } elsif ($context eq 'requestauthor') {
6894: %tools = (
6895: requestauthor => 1,
6896: );
6897: } else {
6898: %tools = (
6899: aboutme => 1,
6900: blog => 1,
6901: webdav => 1,
6902: portfolio => 1,
6903: );
6904: }
6905: return if (!defined($tools{$tool}));
6906:
6907: if (($udom eq '') || ($uname eq '')) {
6908: $udom = $env{'user.domain'};
6909: $uname = $env{'user.name'};
6910: }
6911:
6912: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6913: if ($action ne 'reload') {
6914: if ($context eq 'requestcourses') {
6915: return $env{'environment.canrequest.'.$tool};
6916: } elsif ($context eq 'requestauthor') {
6917: return $env{'environment.canrequest.author'};
6918: } else {
6919: return $env{'environment.availabletools.'.$tool};
6920: }
6921: }
6922: }
6923:
6924: my ($toolstatus,$inststatus,$envkey);
6925: if ($context eq 'requestauthor') {
6926: $envkey = $context;
6927: } else {
6928: $envkey = $context.'.'.$tool;
6929: }
6930:
6931: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6932: ($action ne 'reload')) {
6933: $toolstatus = $env{'environment.'.$envkey};
6934: $inststatus = $env{'environment.inststatus'};
6935: } else {
6936: if (ref($userenvref) eq 'HASH') {
6937: $toolstatus = $userenvref->{$envkey};
6938: $inststatus = $userenvref->{'inststatus'};
6939: } else {
6940: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6941: $toolstatus = $userenv{$envkey};
6942: $inststatus = $userenv{'inststatus'};
6943: }
6944: }
6945:
6946: if ($toolstatus ne '') {
6947: if ($toolstatus) {
6948: $access = 1;
6949: } else {
6950: $access = 0;
6951: }
6952: return $access;
6953: }
6954:
6955: my ($is_adv,%domdef);
6956: if (ref($is_advref) eq 'HASH') {
6957: $is_adv = $is_advref->{'is_adv'};
6958: } else {
6959: $is_adv = &is_advanced_user($udom,$uname);
6960: }
6961: if (ref($domdefref) eq 'HASH') {
6962: %domdef = %{$domdefref};
6963: } else {
6964: %domdef = &get_domain_defaults($udom);
6965: }
6966: if (ref($domdef{$tool}) eq 'HASH') {
6967: if ($is_adv) {
6968: if ($domdef{$tool}{'_LC_adv'} ne '') {
6969: if ($domdef{$tool}{'_LC_adv'}) {
6970: $access = 1;
6971: } else {
6972: $access = 0;
6973: }
6974: return $access;
6975: }
6976: }
6977: if ($inststatus ne '') {
6978: my ($hasaccess,$hasnoaccess);
6979: foreach my $affiliation (split(/:/,$inststatus)) {
6980: if ($domdef{$tool}{$affiliation} ne '') {
6981: if ($domdef{$tool}{$affiliation}) {
6982: $hasaccess = 1;
6983: } else {
6984: $hasnoaccess = 1;
6985: }
6986: }
6987: }
6988: if ($hasaccess || $hasnoaccess) {
6989: if ($hasaccess) {
6990: $access = 1;
6991: } elsif ($hasnoaccess) {
6992: $access = 0;
6993: }
6994: return $access;
6995: }
6996: } else {
6997: if ($domdef{$tool}{'default'} ne '') {
6998: if ($domdef{$tool}{'default'}) {
6999: $access = 1;
7000: } elsif ($domdef{$tool}{'default'} == 0) {
7001: $access = 0;
7002: }
7003: return $access;
7004: }
7005: }
7006: } else {
7007: if (($context eq 'tools') && ($tool ne 'webdav')) {
7008: $access = 1;
7009: } else {
7010: $access = 0;
7011: }
7012: return $access;
7013: }
7014: }
7015:
7016: sub is_course_owner {
7017: my ($cdom,$cnum,$udom,$uname) = @_;
7018: if (($udom eq '') || ($uname eq '')) {
7019: $udom = $env{'user.domain'};
7020: $uname = $env{'user.name'};
7021: }
7022: unless (($udom eq '') || ($uname eq '')) {
7023: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7024: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7025: return 1;
7026: } else {
7027: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7028: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7029: return 1;
7030: }
7031: }
7032: }
7033: }
7034: return;
7035: }
7036:
7037: sub is_advanced_user {
7038: my ($udom,$uname) = @_;
7039: if ($udom ne '' && $uname ne '') {
7040: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7041: if (wantarray) {
7042: return ($env{'user.adv'},$env{'user.author'});
7043: } else {
7044: return $env{'user.adv'};
7045: }
7046: }
7047: }
7048: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7049: my %allroles;
7050: my ($is_adv,$is_author);
7051: foreach my $role (keys(%roleshash)) {
7052: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7053: my $area = '/'.$tdomain.'/'.$trest;
7054: if ($sec ne '') {
7055: $area .= '/'.$sec;
7056: }
7057: if (($area ne '') && ($trole ne '')) {
7058: my $spec=$trole.'.'.$area;
7059: if ($trole =~ /^cr\//) {
7060: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7061: } elsif ($trole ne 'gr') {
7062: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7063: }
7064: if ($trole eq 'au') {
7065: $is_author = 1;
7066: }
7067: }
7068: }
7069: foreach my $role (keys(%allroles)) {
7070: last if ($is_adv);
7071: foreach my $item (split(/:/,$allroles{$role})) {
7072: if ($item ne '') {
7073: my ($privilege,$restrictions)=split(/&/,$item);
7074: if ($privilege eq 'adv') {
7075: $is_adv = 1;
7076: last;
7077: }
7078: }
7079: }
7080: }
7081: if (wantarray) {
7082: return ($is_adv,$is_author);
7083: }
7084: return $is_adv;
7085: }
7086:
7087: sub check_can_request {
7088: my ($dom,$can_request,$request_domains) = @_;
7089: my $canreq = 0;
7090: my ($types,$typename) = &Apache::loncommon::course_types();
7091: my @options = ('approval','validate','autolimit');
7092: my $optregex = join('|',@options);
7093: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7094: foreach my $type (@{$types}) {
7095: if (&usertools_access($env{'user.name'},
7096: $env{'user.domain'},
7097: $type,undef,'requestcourses')) {
7098: $canreq ++;
7099: if (ref($request_domains) eq 'HASH') {
7100: push(@{$request_domains->{$type}},$env{'user.domain'});
7101: }
7102: if ($dom eq $env{'user.domain'}) {
7103: $can_request->{$type} = 1;
7104: }
7105: }
7106: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
7107: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7108: if (@curr > 0) {
7109: foreach my $item (@curr) {
7110: if (ref($request_domains) eq 'HASH') {
7111: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7112: if ($otherdom ne '') {
7113: if (ref($request_domains->{$type}) eq 'ARRAY') {
7114: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7115: push(@{$request_domains->{$type}},$otherdom);
7116: }
7117: } else {
7118: push(@{$request_domains->{$type}},$otherdom);
7119: }
7120: }
7121: }
7122: }
7123: unless($dom eq $env{'user.domain'}) {
7124: $canreq ++;
7125: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7126: $can_request->{$type} = 1;
7127: }
7128: }
7129: }
7130: }
7131: }
7132: }
7133: return $canreq;
7134: }
7135:
7136: # ---------------------------------------------- Custom access rule evaluation
7137:
7138: sub customaccess {
7139: my ($priv,$uri)=@_;
7140: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7141: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7142: $udom = &LONCAPA::clean_domain($udom);
7143: $ucrs = &LONCAPA::clean_username($ucrs);
7144: my $access=0;
7145: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7146: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7147: if ($type eq 'user') {
7148: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7149: my ($tdom,$tuname)=split(m{/},$scope);
7150: if ($tdom) {
7151: if ($tdom ne $env{'user.domain'}) { next; }
7152: }
7153: if ($tuname) {
7154: if ($tuname ne $env{'user.name'}) { next; }
7155: }
7156: $access=($effect eq 'allow');
7157: last;
7158: }
7159: } else {
7160: if ($role) {
7161: if ($role ne $urole) { next; }
7162: }
7163: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7164: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7165: if ($tdom) {
7166: if ($tdom ne $udom) { next; }
7167: }
7168: if ($tcrs) {
7169: if ($tcrs ne $ucrs) { next; }
7170: }
7171: if ($tsec) {
7172: if ($tsec ne $usec) { next; }
7173: }
7174: $access=($effect eq 'allow');
7175: last;
7176: }
7177: if ($realm eq '' && $role eq '') {
7178: $access=($effect eq 'allow');
7179: }
7180: }
7181: }
7182: return $access;
7183: }
7184:
7185: # ------------------------------------------------- Check for a user privilege
7186:
7187: sub allowed {
7188: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7189: my $ver_orguri=$uri;
7190: $uri=&deversion($uri);
7191: my $orguri=$uri;
7192: $uri=&declutter($uri);
7193:
7194: if ($priv eq 'evb') {
7195: # Evade communication block restrictions for specified role in a course
7196: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7197: return $1;
7198: } else {
7199: return;
7200: }
7201: }
7202:
7203: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7204: # Free bre access to adm and meta resources
7205: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
7206: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7207: && ($priv eq 'bre')) {
7208: return 'F';
7209: }
7210:
7211: # Free bre access to user's own portfolio contents
7212: my ($space,$domain,$name,@dir)=split('/',$uri);
7213: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7214: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7215: my %setters;
7216: my ($startblock,$endblock) =
7217: &Apache::loncommon::blockcheck(\%setters,'port');
7218: if ($startblock && $endblock) {
7219: return 'B';
7220: } else {
7221: return 'F';
7222: }
7223: }
7224:
7225: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7226: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7227: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7228: if (exists($env{'request.course.id'})) {
7229: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7230: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7231: if (($domain eq $cdom) && ($name eq $cnum)) {
7232: my $courseprivid=$env{'request.course.id'};
7233: $courseprivid=~s/\_/\//;
7234: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7235: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7236: return $1;
7237: } else {
7238: if ($env{'request.course.sec'}) {
7239: $courseprivid.='/'.$env{'request.course.sec'};
7240: }
7241: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7242: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7243: return $2;
7244: }
7245: }
7246: }
7247: }
7248: }
7249:
7250: # Free bre to public access
7251:
7252: if ($priv eq 'bre') {
7253: my $copyright=&metadata($uri,'copyright');
7254: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7255: return 'F';
7256: }
7257: if ($copyright eq 'priv') {
7258: $uri=~/([^\/]+)\/([^\/]+)\//;
7259: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7260: return '';
7261: }
7262: }
7263: if ($copyright eq 'domain') {
7264: $uri=~/([^\/]+)\/([^\/]+)\//;
7265: unless (($env{'user.domain'} eq $1) ||
7266: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7267: return '';
7268: }
7269: }
7270: if ($env{'request.role'}=~ /li\.\//) {
7271: # Library role, so allow browsing of resources in this domain.
7272: return 'F';
7273: }
7274: if ($copyright eq 'custom') {
7275: unless (&customaccess($priv,$uri)) { return ''; }
7276: }
7277: }
7278: # Domain coordinator is trying to create a course
7279: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7280: # uri is the requested domain in this case.
7281: # comparison to 'request.role.domain' shows if the user has selected
7282: # a role of dc for the domain in question.
7283: return 'F' if ($uri eq $env{'request.role.domain'});
7284: }
7285:
7286: my $thisallowed='';
7287: my $statecond=0;
7288: my $courseprivid='';
7289:
7290: my $ownaccess;
7291: # Community Coordinator or Assistant Co-author browsing resource space.
7292: if (($priv eq 'bro') && ($env{'user.author'})) {
7293: if ($uri eq '') {
7294: $ownaccess = 1;
7295: } else {
7296: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7297: my $udom = $env{'user.domain'};
7298: my $uname = $env{'user.name'};
7299: if ($uri =~ m{^\Q$udom\E/?$}) {
7300: $ownaccess = 1;
7301: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7302: unless ($uri =~ m{\.\./}) {
7303: $ownaccess = 1;
7304: }
7305: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7306: my $now = time;
7307: if ($uri =~ m{^([^/]+)/?$}) {
7308: my $adom = $1;
7309: foreach my $key (keys(%env)) {
7310: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7311: my ($start,$end) = split('.',$env{$key});
7312: if (($now >= $start) && (!$end || $end < $now)) {
7313: $ownaccess = 1;
7314: last;
7315: }
7316: }
7317: }
7318: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7319: my $adom = $1;
7320: my $aname = $2;
7321: foreach my $role ('ca','aa') {
7322: if ($env{"user.role.$role./$adom/$aname"}) {
7323: my ($start,$end) =
7324: split('.',$env{"user.role.$role./$adom/$aname"});
7325: if (($now >= $start) && (!$end || $end < $now)) {
7326: $ownaccess = 1;
7327: last;
7328: }
7329: }
7330: }
7331: }
7332: }
7333: }
7334: }
7335: }
7336:
7337: # Course
7338:
7339: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7340: unless (($priv eq 'bro') && (!$ownaccess)) {
7341: $thisallowed.=$1;
7342: }
7343: }
7344:
7345: # Domain
7346:
7347: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7348: =~/\Q$priv\E\&([^\:]*)/) {
7349: unless (($priv eq 'bro') && (!$ownaccess)) {
7350: $thisallowed.=$1;
7351: }
7352: }
7353:
7354: # User who is not author or co-author might still be able to edit
7355: # resource of an author in the domain (e.g., if Domain Coordinator).
7356: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7357: (&allowed('mdc',$env{'request.course.id'}))) {
7358: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7359: $thisallowed.=$1;
7360: }
7361: }
7362:
7363: # Course: uri itself is a course
7364: my $courseuri=$uri;
7365: $courseuri=~s/\_(\d)/\/$1/;
7366: $courseuri=~s/^([^\/])/\/$1/;
7367:
7368: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7369: =~/\Q$priv\E\&([^\:]*)/) {
7370: unless (($priv eq 'bro') && (!$ownaccess)) {
7371: $thisallowed.=$1;
7372: }
7373: }
7374:
7375: # URI is an uploaded document for this course, default permissions don't matter
7376: # not allowing 'edit' access (editupload) to uploaded course docs
7377: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7378: $thisallowed='';
7379: my ($match)=&is_on_map($uri);
7380: if ($match) {
7381: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7382: =~/\Q$priv\E\&([^\:]*)/) {
7383: my $value = $1;
7384: if ($noblockcheck) {
7385: $thisallowed.=$value;
7386: } else {
7387: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7388: if (@blockers > 0) {
7389: $thisallowed = 'B';
7390: } else {
7391: $thisallowed.=$value;
7392: }
7393: }
7394: }
7395: } else {
7396: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7397: if ($refuri) {
7398: if ($refuri =~ m|^/adm/|) {
7399: $thisallowed='F';
7400: } else {
7401: $refuri=&declutter($refuri);
7402: my ($match) = &is_on_map($refuri);
7403: if ($match) {
7404: if ($noblockcheck) {
7405: $thisallowed='F';
7406: } else {
7407: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7408: if (@blockers > 0) {
7409: $thisallowed = 'B';
7410: } else {
7411: $thisallowed='F';
7412: }
7413: }
7414: }
7415: }
7416: }
7417: }
7418: }
7419:
7420: if ($priv eq 'bre'
7421: && $thisallowed ne 'F'
7422: && $thisallowed ne '2'
7423: && &is_portfolio_url($uri)) {
7424: $thisallowed = &portfolio_access($uri,$clientip);
7425: }
7426:
7427: # Full access at system, domain or course-wide level? Exit.
7428: if ($thisallowed=~/F/) {
7429: return 'F';
7430: }
7431:
7432: # If this is generating or modifying users, exit with special codes
7433:
7434: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7435: if (($priv eq 'cca') || ($priv eq 'caa')) {
7436: my ($audom,$auname)=split('/',$uri);
7437: # no author name given, so this just checks on the general right to make a co-author in this domain
7438: unless ($auname) { return $thisallowed; }
7439: # an author name is given, so we are about to actually make a co-author for a certain account
7440: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7441: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7442: ($audom ne $env{'request.role.domain'}))) { return ''; }
7443: }
7444: return $thisallowed;
7445: }
7446: #
7447: # Gathered so far: system, domain and course wide privileges
7448: #
7449: # Course: See if uri or referer is an individual resource that is part of
7450: # the course
7451:
7452: if ($env{'request.course.id'}) {
7453:
7454: $courseprivid=$env{'request.course.id'};
7455: if ($env{'request.course.sec'}) {
7456: $courseprivid.='/'.$env{'request.course.sec'};
7457: }
7458: $courseprivid=~s/\_/\//;
7459: my $checkreferer=1;
7460: my ($match,$cond)=&is_on_map($uri);
7461: if ($match) {
7462: $statecond=$cond;
7463: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7464: =~/\Q$priv\E\&([^\:]*)/) {
7465: my $value = $1;
7466: if ($priv eq 'bre') {
7467: if ($noblockcheck) {
7468: $thisallowed.=$value;
7469: } else {
7470: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7471: if (@blockers > 0) {
7472: $thisallowed = 'B';
7473: } else {
7474: $thisallowed.=$value;
7475: }
7476: }
7477: } else {
7478: $thisallowed.=$value;
7479: }
7480: $checkreferer=0;
7481: }
7482: }
7483:
7484: if ($checkreferer) {
7485: my $refuri=$env{'httpref.'.$orguri};
7486: unless ($refuri) {
7487: foreach my $key (keys(%env)) {
7488: if ($key=~/^httpref\..*\*/) {
7489: my $pattern=$key;
7490: $pattern=~s/^httpref\.\/res\///;
7491: $pattern=~s/\*/\[\^\/\]\+/g;
7492: $pattern=~s/\//\\\//g;
7493: if ($orguri=~/$pattern/) {
7494: $refuri=$env{$key};
7495: }
7496: }
7497: }
7498: }
7499:
7500: if ($refuri) {
7501: $refuri=&declutter($refuri);
7502: my ($match,$cond)=&is_on_map($refuri);
7503: if ($match) {
7504: my $refstatecond=$cond;
7505: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7506: =~/\Q$priv\E\&([^\:]*)/) {
7507: my $value = $1;
7508: if ($priv eq 'bre') {
7509: if ($noblockcheck) {
7510: $thisallowed.=$value;
7511: } else {
7512: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7513: if (@blockers > 0) {
7514: $thisallowed = 'B';
7515: } else {
7516: $thisallowed.=$value;
7517: }
7518: }
7519: } else {
7520: $thisallowed.=$value;
7521: }
7522: $uri=$refuri;
7523: $statecond=$refstatecond;
7524: }
7525: }
7526: }
7527: }
7528: }
7529:
7530: #
7531: # Gathered now: all privileges that could apply, and condition number
7532: #
7533: #
7534: # Full or no access?
7535: #
7536:
7537: if ($thisallowed=~/F/) {
7538: return 'F';
7539: }
7540:
7541: unless ($thisallowed) {
7542: return '';
7543: }
7544:
7545: # Restrictions exist, deal with them
7546: #
7547: # C:according to course preferences
7548: # R:according to resource settings
7549: # L:unless locked
7550: # X:according to user session state
7551: #
7552:
7553: # Possibly locked functionality, check all courses
7554: # Locks might take effect only after 10 minutes cache expiration for other
7555: # courses, and 2 minutes for current course
7556:
7557: my $envkey;
7558: if ($thisallowed=~/L/) {
7559: foreach $envkey (keys(%env)) {
7560: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7561: my $courseid=$2;
7562: my $roleid=$1.'.'.$2;
7563: $courseid=~s/^\///;
7564: my $expiretime=600;
7565: if ($env{'request.role'} eq $roleid) {
7566: $expiretime=120;
7567: }
7568: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7569: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7570: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7571: &coursedescription($courseid,{'freshen_cache' => 1});
7572: }
7573: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7574: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7575: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7576: &log($env{'user.domain'},$env{'user.name'},
7577: $env{'user.home'},
7578: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7579: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7580: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7581: return '';
7582: }
7583: }
7584: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7585: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7586: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7587: &log($env{'user.domain'},$env{'user.name'},
7588: $env{'user.home'},
7589: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7590: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7591: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7592: return '';
7593: }
7594: }
7595: }
7596: }
7597: }
7598:
7599: #
7600: # Rest of the restrictions depend on selected course
7601: #
7602:
7603: unless ($env{'request.course.id'}) {
7604: if ($thisallowed eq 'A') {
7605: return 'A';
7606: } elsif ($thisallowed eq 'B') {
7607: return 'B';
7608: } else {
7609: return '1';
7610: }
7611: }
7612:
7613: #
7614: # Now user is definitely in a course
7615: #
7616:
7617:
7618: # Course preferences
7619:
7620: if ($thisallowed=~/C/) {
7621: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7622: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7623: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7624: =~/\Q$rolecode\E/) {
7625: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7626: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7627: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7628: $env{'request.course.id'});
7629: }
7630: return '';
7631: }
7632:
7633: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7634: =~/\Q$unamedom\E/) {
7635: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7636: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7637: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7638: $env{'request.course.id'});
7639: }
7640: return '';
7641: }
7642: }
7643:
7644: # Resource preferences
7645:
7646: if ($thisallowed=~/R/) {
7647: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7648: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7649: if (($priv ne 'pch') && ($priv ne 'plc')) {
7650: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7651: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7652: }
7653: return '';
7654: }
7655: }
7656:
7657: # Restricted by state or randomout?
7658:
7659: if ($thisallowed=~/X/) {
7660: if ($env{'acc.randomout'}) {
7661: if (!$symb) { $symb=&symbread($uri,1); }
7662: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7663: return '';
7664: }
7665: }
7666: if (&condval($statecond)) {
7667: return '2';
7668: } else {
7669: return '';
7670: }
7671: }
7672:
7673: if ($thisallowed eq 'A') {
7674: return 'A';
7675: } elsif ($thisallowed eq 'B') {
7676: return 'B';
7677: }
7678: return 'F';
7679: }
7680:
7681: # ------------------------------------------- Check construction space access
7682:
7683: sub constructaccess {
7684: my ($url,$setpriv)=@_;
7685:
7686: # We do not allow editing of previous versions of files
7687: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7688:
7689: # Get username and domain from URL
7690: my ($ownername,$ownerdomain,$ownerhome);
7691:
7692: ($ownerdomain,$ownername) =
7693: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
7694:
7695: # The URL does not really point to any authorspace, forget it
7696: unless (($ownername) && ($ownerdomain)) { return ''; }
7697:
7698: # Now we need to see if the user has access to the authorspace of
7699: # $ownername at $ownerdomain
7700:
7701: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7702: # Real author for this?
7703: $ownerhome = $env{'user.home'};
7704: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7705: return ($ownername,$ownerdomain,$ownerhome);
7706: }
7707: } else {
7708: # Co-author for this?
7709: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7710: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7711: $ownerhome = &homeserver($ownername,$ownerdomain);
7712: return ($ownername,$ownerdomain,$ownerhome);
7713: }
7714: if ($env{'request.course.id'}) {
7715: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
7716: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
7717: if (&allowed('mdc',$env{'request.course.id'})) {
7718: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
7719: return ($ownername,$ownerdomain,$ownerhome);
7720: }
7721: }
7722: }
7723: }
7724:
7725: # We don't have any access right now. If we are not possibly going to do anything about this,
7726: # we might as well leave
7727: unless ($setpriv) { return ''; }
7728:
7729: # Backdoor access?
7730: my $allowed=&allowed('eco',$ownerdomain);
7731: # Nope
7732: unless ($allowed) { return ''; }
7733: # Looks like we may have access, but could be locked by the owner of the construction space
7734: if ($allowed eq 'U') {
7735: my %blocked=&get('environment',['domcoord.author'],
7736: $ownerdomain,$ownername);
7737: # Is blocked by owner
7738: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7739: }
7740: if (($allowed eq 'F') || ($allowed eq 'U')) {
7741: # Grant temporary access
7742: my $then=$env{'user.login.time'};
7743: my $update=$env{'user.update.time'};
7744: if (!$update) { $update = $then; }
7745: my $refresh=$env{'user.refresh.time'};
7746: if (!$refresh) { $refresh = $update; }
7747: my $now = time;
7748: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7749: $now,'ca','constructaccess');
7750: $ownerhome = &homeserver($ownername,$ownerdomain);
7751: return($ownername,$ownerdomain,$ownerhome);
7752: }
7753: # No business here
7754: return '';
7755: }
7756:
7757: # ----------------------------------------------------------- Content Blocking
7758:
7759: {
7760: # Caches for faster Course Contents display where content blocking
7761: # is in operation (i.e., interval param set) for timed quiz.
7762: #
7763: # User for whom data are being temporarily cached.
7764: my $cacheduser='';
7765: # Cached blockers for this user (a hash of blocking items).
7766: my %cachedblockers=();
7767: # When the data were last cached.
7768: my $cachedlast='';
7769:
7770: sub load_all_blockers {
7771: my ($uname,$udom,$blocks)=@_;
7772: if (($uname ne '') && ($udom ne '')) {
7773: if (($cacheduser eq $uname.':'.$udom) &&
7774: (abs($cachedlast-time)<5)) {
7775: return;
7776: }
7777: }
7778: $cachedlast=time;
7779: $cacheduser=$uname.':'.$udom;
7780: %cachedblockers = &get_commblock_resources($blocks);
7781: }
7782:
7783: sub get_comm_blocks {
7784: my ($cdom,$cnum) = @_;
7785: if ($cdom eq '' || $cnum eq '') {
7786: return unless ($env{'request.course.id'});
7787: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7788: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7789: }
7790: my %commblocks;
7791: my $hashid=$cdom.'_'.$cnum;
7792: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7793: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7794: %commblocks = %{$blocksref};
7795: } else {
7796: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7797: my $cachetime = 600;
7798: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7799: }
7800: return %commblocks;
7801: }
7802:
7803: sub get_commblock_resources {
7804: my ($blocks) = @_;
7805: my %blockers = ();
7806: return %blockers unless ($env{'request.course.id'});
7807: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7808: my %commblocks;
7809: if (ref($blocks) eq 'HASH') {
7810: %commblocks = %{$blocks};
7811: } else {
7812: %commblocks = &get_comm_blocks();
7813: }
7814: return %blockers unless (keys(%commblocks) > 0);
7815: my $navmap = Apache::lonnavmaps::navmap->new();
7816: return %blockers unless (ref($navmap));
7817: my $now = time;
7818: foreach my $block (keys(%commblocks)) {
7819: if ($block =~ /^(\d+)____(\d+)$/) {
7820: my ($start,$end) = ($1,$2);
7821: if ($start <= $now && $end >= $now) {
7822: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7823: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7824: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7825: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7826: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7827: }
7828: }
7829: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7830: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7831: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7832: }
7833: }
7834: }
7835: }
7836: }
7837: } elsif ($block =~ /^firstaccess____(.+)$/) {
7838: my $item = $1;
7839: my @to_test;
7840: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7841: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7842: my @interval;
7843: my $type = 'map';
7844: if ($item eq 'course') {
7845: $type = 'course';
7846: @interval=&EXT("resource.0.interval");
7847: } else {
7848: if ($item =~ /___\d+___/) {
7849: $type = 'resource';
7850: @interval=&EXT("resource.0.interval",$item);
7851: if (ref($navmap)) {
7852: my $res = $navmap->getBySymb($item);
7853: push(@to_test,$res);
7854: }
7855: } else {
7856: my $mapsymb = &symbread($item,1);
7857: if ($mapsymb) {
7858: if (ref($navmap)) {
7859: my $mapres = $navmap->getBySymb($mapsymb);
7860: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
7861: foreach my $res (@to_test) {
7862: my $symb = $res->symb();
7863: next if ($symb eq $mapsymb);
7864: if ($symb ne '') {
7865: @interval=&EXT("resource.0.interval",$symb);
7866: if ($interval[1] eq 'map') {
7867: last;
7868: }
7869: }
7870: }
7871: }
7872: }
7873: }
7874: }
7875: if ($interval[0] =~ /^(\d+)/) {
7876: my $timelimit = $1;
7877: my $first_access;
7878: if ($type eq 'resource') {
7879: $first_access=&get_first_access($interval[1],$item);
7880: } elsif ($type eq 'map') {
7881: $first_access=&get_first_access($interval[1],undef,$item);
7882: } else {
7883: $first_access=&get_first_access($interval[1]);
7884: }
7885: if ($first_access) {
7886: my $timesup = $first_access+$timelimit;
7887: if ($timesup > $now) {
7888: my $activeblock;
7889: foreach my $res (@to_test) {
7890: if ($res->answerable()) {
7891: $activeblock = 1;
7892: last;
7893: }
7894: }
7895: if ($activeblock) {
7896: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7897: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7898: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7899: }
7900: }
7901: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7902: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7903: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7904: }
7905: }
7906: }
7907: }
7908: }
7909: }
7910: }
7911: }
7912: }
7913: }
7914: return %blockers;
7915: }
7916:
7917: sub has_comm_blocking {
7918: my ($priv,$symb,$uri,$blocks) = @_;
7919: my @blockers;
7920: return unless ($env{'request.course.id'});
7921: return unless ($priv eq 'bre');
7922: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7923: return if ($env{'request.state'} eq 'construct');
7924: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
7925: return unless (keys(%cachedblockers) > 0);
7926: my (%possibles,@symbs);
7927: if (!$symb) {
7928: $symb = &symbread($uri,1,1,1,\%possibles);
7929: }
7930: if ($symb) {
7931: @symbs = ($symb);
7932: } elsif (keys(%possibles)) {
7933: @symbs = keys(%possibles);
7934: }
7935: my $noblock;
7936: foreach my $symb (@symbs) {
7937: last if ($noblock);
7938: my ($map,$resid,$resurl)=&decode_symb($symb);
7939: foreach my $block (keys(%cachedblockers)) {
7940: if ($block =~ /^firstaccess____(.+)$/) {
7941: my $item = $1;
7942: if (($item eq $map) || ($item eq $symb)) {
7943: $noblock = 1;
7944: last;
7945: }
7946: }
7947: if (ref($cachedblockers{$block}) eq 'HASH') {
7948: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
7949: if ($cachedblockers{$block}{'resources'}{$symb}) {
7950: unless (grep(/^\Q$block\E$/,@blockers)) {
7951: push(@blockers,$block);
7952: }
7953: }
7954: }
7955: }
7956: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
7957: if ($cachedblockers{$block}{'maps'}{$map}) {
7958: unless (grep(/^\Q$block\E$/,@blockers)) {
7959: push(@blockers,$block);
7960: }
7961: }
7962: }
7963: }
7964: }
7965: return if ($noblock);
7966: return @blockers;
7967: }
7968: }
7969:
7970: # -------------------------------- Deversion and split uri into path an filename
7971:
7972: #
7973: # Removes the version from a URI and
7974: # splits it in to its filename and path to the filename.
7975: # Seems like File::Basename could have done this more clearly.
7976: # Parameters:
7977: # $uri - input URI
7978: # Returns:
7979: # Two element list consisting of
7980: # $pathname - the URI up to and excluding the trailing /
7981: # $filename - The part of the URI following the last /
7982: # NOTE:
7983: # Another realization of this is simply:
7984: # use File::Basename;
7985: # ...
7986: # $uri = shift;
7987: # $filename = basename($uri);
7988: # $path = dirname($uri);
7989: # return ($filename, $path);
7990: #
7991: # The implementation below is probably faster however.
7992: #
7993: sub split_uri_for_cond {
7994: my $uri=&deversion(&declutter(shift));
7995: my @uriparts=split(/\//,$uri);
7996: my $filename=pop(@uriparts);
7997: my $pathname=join('/',@uriparts);
7998: return ($pathname,$filename);
7999: }
8000: # --------------------------------------------------- Is a resource on the map?
8001:
8002: sub is_on_map {
8003: my ($pathname,$filename) = &split_uri_for_cond(shift);
8004: #Trying to find the conditional for the file
8005: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8006: /\&\Q$filename\E\:([\d\|]+)\&/);
8007: if ($match) {
8008: return (1,$1);
8009: } else {
8010: return (0,0);
8011: }
8012: }
8013:
8014: # --------------------------------------------------------- Get symb from alias
8015:
8016: sub get_symb_from_alias {
8017: my $symb=shift;
8018: my ($map,$resid,$url)=&decode_symb($symb);
8019: # Already is a symb
8020: if ($url) { return $symb; }
8021: # Must be an alias
8022: my $aliassymb='';
8023: my %bighash;
8024: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8025: &GDBM_READER(),0640)) {
8026: my $rid=$bighash{'mapalias_'.$symb};
8027: if ($rid) {
8028: my ($mapid,$resid)=split(/\./,$rid);
8029: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8030: $resid,$bighash{'src_'.$rid});
8031: }
8032: untie %bighash;
8033: }
8034: return $aliassymb;
8035: }
8036:
8037: # ----------------------------------------------------------------- Define Role
8038:
8039: sub definerole {
8040: if (allowed('mcr','/')) {
8041: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8042: foreach my $role (split(':',$sysrole)) {
8043: my ($crole,$cqual)=split(/\&/,$role);
8044: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8045: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8046: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8047: return "refused:s:$crole&$cqual";
8048: }
8049: }
8050: }
8051: foreach my $role (split(':',$domrole)) {
8052: my ($crole,$cqual)=split(/\&/,$role);
8053: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8054: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8055: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8056: return "refused:d:$crole&$cqual";
8057: }
8058: }
8059: }
8060: foreach my $role (split(':',$courole)) {
8061: my ($crole,$cqual)=split(/\&/,$role);
8062: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8063: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8064: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8065: return "refused:c:$crole&$cqual";
8066: }
8067: }
8068: }
8069: my $uhome;
8070: if (($uname ne '') && ($udom ne '')) {
8071: $uhome = &homeserver($uname,$udom);
8072: return $uhome if ($uhome eq 'no_host');
8073: } else {
8074: $uname = $env{'user.name'};
8075: $udom = $env{'user.domain'};
8076: $uhome = $env{'user.home'};
8077: }
8078: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8079: "$udom:$uname:rolesdef_$rolename=".
8080: escape($sysrole.'_'.$domrole.'_'.$courole);
8081: return reply($command,$uhome);
8082: } else {
8083: return 'refused';
8084: }
8085: }
8086:
8087: # ---------------- Make a metadata query against the network of library servers
8088:
8089: sub metadata_query {
8090: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8091: my %rhash;
8092: my %libserv = &all_library();
8093: my @server_list = (defined($server_array) ? @$server_array
8094: : keys(%libserv) );
8095: for my $server (@server_list) {
8096: my $domains = '';
8097: if (ref($domains_hash) eq 'HASH') {
8098: $domains = $domains_hash->{$server};
8099: }
8100: unless ($custom or $customshow) {
8101: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8102: $rhash{$server}=$reply;
8103: }
8104: else {
8105: my $reply=&reply("querysend:".&escape($query).':'.
8106: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8107: $server);
8108: $rhash{$server}=$reply;
8109: }
8110: }
8111: return \%rhash;
8112: }
8113:
8114: # ----------------------------------------- Send log queries and wait for reply
8115:
8116: sub log_query {
8117: my ($uname,$udom,$query,%filters)=@_;
8118: my $uhome=&homeserver($uname,$udom);
8119: if ($uhome eq 'no_host') { return 'error: no_host'; }
8120: my $uhost=&hostname($uhome);
8121: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8122: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8123: $uhome);
8124: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8125: return get_query_reply($queryid);
8126: }
8127:
8128: # -------------------------- Update MySQL table for portfolio file
8129:
8130: sub update_portfolio_table {
8131: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8132: if ($group ne '') {
8133: $file_name =~s /^\Q$group\E//;
8134: }
8135: my $homeserver = &homeserver($uname,$udom);
8136: my $queryid=
8137: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8138: ':'.&escape($file_name).':'.$action,$homeserver);
8139: my $reply = &get_query_reply($queryid);
8140: return $reply;
8141: }
8142:
8143: # -------------------------- Update MySQL allusers table
8144:
8145: sub update_allusers_table {
8146: my ($uname,$udom,$names) = @_;
8147: my $homeserver = &homeserver($uname,$udom);
8148: my $queryid=
8149: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8150: 'lastname='.&escape($names->{'lastname'}).'%%'.
8151: 'firstname='.&escape($names->{'firstname'}).'%%'.
8152: 'middlename='.&escape($names->{'middlename'}).'%%'.
8153: 'generation='.&escape($names->{'generation'}).'%%'.
8154: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8155: 'id='.&escape($names->{'id'}),$homeserver);
8156: return;
8157: }
8158:
8159: # ------- Request retrieval of institutional classlists for course(s)
8160:
8161: sub fetch_enrollment_query {
8162: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8163: my ($homeserver,$sleep,$loopmax);
8164: my $maxtries = 1;
8165: if ($context eq 'automated') {
8166: $homeserver = $perlvar{'lonHostID'};
8167: $sleep = 2;
8168: $loopmax = 100;
8169: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8170: } else {
8171: $homeserver = &homeserver($cnum,$dom);
8172: }
8173: my $host=&hostname($homeserver);
8174: my $cmd = '';
8175: foreach my $affiliate (keys(%{$affiliatesref})) {
8176: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8177: }
8178: $cmd =~ s/%%$//;
8179: $cmd = &escape($cmd);
8180: my $query = 'fetchenrollment';
8181: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8182: unless ($queryid=~/^\Q$host\E\_/) {
8183: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8184: return 'error: '.$queryid;
8185: }
8186: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8187: my $tries = 1;
8188: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8189: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8190: $tries ++;
8191: }
8192: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8193: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8194: } else {
8195: my @responses = split(/:/,$reply);
8196: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8197: foreach my $line (@responses) {
8198: my ($key,$value) = split(/=/,$line,2);
8199: $$replyref{$key} = $value;
8200: }
8201: } else {
8202: my $pathname = LONCAPA::tempdir();
8203: foreach my $line (@responses) {
8204: my ($key,$value) = split(/=/,$line);
8205: $$replyref{$key} = $value;
8206: if ($value > 0) {
8207: foreach my $item (@{$$affiliatesref{$key}}) {
8208: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8209: my $destname = $pathname.'/'.$filename;
8210: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8211: if ($xml_classlist =~ /^error/) {
8212: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8213: } else {
8214: if ( open(FILE,">$destname") ) {
8215: print FILE &unescape($xml_classlist);
8216: close(FILE);
8217: } else {
8218: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8219: }
8220: }
8221: }
8222: }
8223: }
8224: }
8225: return 'ok';
8226: }
8227: return 'error';
8228: }
8229:
8230: sub get_query_reply {
8231: my ($queryid,$sleep,$loopmax) = @_;;
8232: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8233: $sleep = 0.2;
8234: }
8235: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8236: $loopmax = 100;
8237: }
8238: my $replyfile=LONCAPA::tempdir().$queryid;
8239: my $reply='';
8240: for (1..$loopmax) {
8241: sleep($sleep);
8242: if (-e $replyfile.'.end') {
8243: if (open(my $fh,$replyfile)) {
8244: $reply = join('',<$fh>);
8245: close($fh);
8246: } else { return 'error: reply_file_error'; }
8247: return &unescape($reply);
8248: }
8249: }
8250: return 'timeout:'.$queryid;
8251: }
8252:
8253: sub courselog_query {
8254: #
8255: # possible filters:
8256: # url: url or symb
8257: # username
8258: # domain
8259: # action: view, submit, grade
8260: # start: timestamp
8261: # end: timestamp
8262: #
8263: my (%filters)=@_;
8264: unless ($env{'request.course.id'}) { return 'no_course'; }
8265: if ($filters{'url'}) {
8266: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8267: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8268: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8269: }
8270: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8271: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8272: return &log_query($cname,$cdom,'courselog',%filters);
8273: }
8274:
8275: sub userlog_query {
8276: #
8277: # possible filters:
8278: # action: log check role
8279: # start: timestamp
8280: # end: timestamp
8281: #
8282: my ($uname,$udom,%filters)=@_;
8283: return &log_query($uname,$udom,'userlog',%filters);
8284: }
8285:
8286: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8287:
8288: sub auto_run {
8289: my ($cnum,$cdom) = @_;
8290: my $response = 0;
8291: my $settings;
8292: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8293: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8294: $settings = $domconfig{'autoenroll'};
8295: if ($settings->{'run'} eq '1') {
8296: $response = 1;
8297: }
8298: } else {
8299: my $homeserver;
8300: if (&is_course($cdom,$cnum)) {
8301: $homeserver = &homeserver($cnum,$cdom);
8302: } else {
8303: $homeserver = &domain($cdom,'primary');
8304: }
8305: if ($homeserver ne 'no_host') {
8306: $response = &reply('autorun:'.$cdom,$homeserver);
8307: }
8308: }
8309: return $response;
8310: }
8311:
8312: sub auto_get_sections {
8313: my ($cnum,$cdom,$inst_coursecode) = @_;
8314: my $homeserver;
8315: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8316: $homeserver = &homeserver($cnum,$cdom);
8317: }
8318: if (!defined($homeserver)) {
8319: if ($cdom =~ /^$match_domain$/) {
8320: $homeserver = &domain($cdom,'primary');
8321: }
8322: }
8323: my @secs;
8324: if (defined($homeserver)) {
8325: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8326: unless ($response eq 'refused') {
8327: @secs = split(/:/,$response);
8328: }
8329: }
8330: return @secs;
8331: }
8332:
8333: sub auto_new_course {
8334: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8335: my $homeserver = &homeserver($cnum,$cdom);
8336: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8337: return $response;
8338: }
8339:
8340: sub auto_validate_courseID {
8341: my ($cnum,$cdom,$inst_course_id) = @_;
8342: my $homeserver = &homeserver($cnum,$cdom);
8343: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8344: return $response;
8345: }
8346:
8347: sub auto_validate_instcode {
8348: my ($cnum,$cdom,$instcode,$owner) = @_;
8349: my ($homeserver,$response);
8350: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8351: $homeserver = &homeserver($cnum,$cdom);
8352: }
8353: if (!defined($homeserver)) {
8354: if ($cdom =~ /^$match_domain$/) {
8355: $homeserver = &domain($cdom,'primary');
8356: }
8357: }
8358: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8359: &escape($instcode).':'.&escape($owner),$homeserver));
8360: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8361: return ($outcome,$description,$defaultcredits);
8362: }
8363:
8364: sub auto_create_password {
8365: my ($cnum,$cdom,$authparam,$udom) = @_;
8366: my ($homeserver,$response);
8367: my $create_passwd = 0;
8368: my $authchk = '';
8369: if ($udom =~ /^$match_domain$/) {
8370: $homeserver = &domain($udom,'primary');
8371: }
8372: if ($homeserver eq '') {
8373: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8374: $homeserver = &homeserver($cnum,$cdom);
8375: }
8376: }
8377: if ($homeserver eq '') {
8378: $authchk = 'nodomain';
8379: } else {
8380: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8381: if ($response eq 'refused') {
8382: $authchk = 'refused';
8383: } else {
8384: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8385: }
8386: }
8387: return ($authparam,$create_passwd,$authchk);
8388: }
8389:
8390: sub auto_photo_permission {
8391: my ($cnum,$cdom,$students) = @_;
8392: my $homeserver = &homeserver($cnum,$cdom);
8393: my ($outcome,$perm_reqd,$conditions) =
8394: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8395: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8396: return (undef,undef);
8397: }
8398: return ($outcome,$perm_reqd,$conditions);
8399: }
8400:
8401: sub auto_checkphotos {
8402: my ($uname,$udom,$pid) = @_;
8403: my $homeserver = &homeserver($uname,$udom);
8404: my ($result,$resulttype);
8405: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8406: &escape($uname).':'.&escape($pid),
8407: $homeserver));
8408: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8409: return (undef,undef);
8410: }
8411: if ($outcome) {
8412: ($result,$resulttype) = split(/:/,$outcome);
8413: }
8414: return ($result,$resulttype);
8415: }
8416:
8417: sub auto_photochoice {
8418: my ($cnum,$cdom) = @_;
8419: my $homeserver = &homeserver($cnum,$cdom);
8420: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8421: &escape($cdom),
8422: $homeserver)));
8423: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8424: return (undef,undef);
8425: }
8426: return ($update,$comment);
8427: }
8428:
8429: sub auto_photoupdate {
8430: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8431: my $homeserver = &homeserver($cnum,$dom);
8432: my $host=&hostname($homeserver);
8433: my $cmd = '';
8434: my $maxtries = 1;
8435: foreach my $affiliate (keys(%{$affiliatesref})) {
8436: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8437: }
8438: $cmd =~ s/%%$//;
8439: $cmd = &escape($cmd);
8440: my $query = 'institutionalphotos';
8441: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8442: unless ($queryid=~/^\Q$host\E\_/) {
8443: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8444: return 'error: '.$queryid;
8445: }
8446: my $reply = &get_query_reply($queryid);
8447: my $tries = 1;
8448: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8449: $reply = &get_query_reply($queryid);
8450: $tries ++;
8451: }
8452: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8453: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8454: } else {
8455: my @responses = split(/:/,$reply);
8456: my $outcome = shift(@responses);
8457: foreach my $item (@responses) {
8458: my ($key,$value) = split(/=/,$item);
8459: $$photo{$key} = $value;
8460: }
8461: return $outcome;
8462: }
8463: return 'error';
8464: }
8465:
8466: sub auto_instcode_format {
8467: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8468: $cat_order) = @_;
8469: my $courses = '';
8470: my @homeservers;
8471: if ($caller eq 'global') {
8472: my %servers = &get_servers($codedom,'library');
8473: foreach my $tryserver (keys(%servers)) {
8474: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8475: push(@homeservers,$tryserver);
8476: }
8477: }
8478: } elsif ($caller eq 'requests') {
8479: if ($codedom =~ /^$match_domain$/) {
8480: my $chome = &domain($codedom,'primary');
8481: unless ($chome eq 'no_host') {
8482: push(@homeservers,$chome);
8483: }
8484: }
8485: } else {
8486: push(@homeservers,&homeserver($caller,$codedom));
8487: }
8488: foreach my $code (keys(%{$instcodes})) {
8489: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8490: }
8491: chop($courses);
8492: my $ok_response = 0;
8493: my $response;
8494: while (@homeservers > 0 && $ok_response == 0) {
8495: my $server = shift(@homeservers);
8496: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8497: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8498: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8499: split(/:/,$response);
8500: %{$codes} = (%{$codes},&str2hash($codes_str));
8501: push(@{$codetitles},&str2array($codetitles_str));
8502: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8503: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8504: $ok_response = 1;
8505: }
8506: }
8507: if ($ok_response) {
8508: return 'ok';
8509: } else {
8510: return $response;
8511: }
8512: }
8513:
8514: sub auto_instcode_defaults {
8515: my ($domain,$returnhash,$code_order) = @_;
8516: my @homeservers;
8517:
8518: my %servers = &get_servers($domain,'library');
8519: foreach my $tryserver (keys(%servers)) {
8520: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8521: push(@homeservers,$tryserver);
8522: }
8523: }
8524:
8525: my $response;
8526: foreach my $server (@homeservers) {
8527: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8528: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8529:
8530: foreach my $pair (split(/\&/,$response)) {
8531: my ($name,$value)=split(/\=/,$pair);
8532: if ($name eq 'code_order') {
8533: @{$code_order} = split(/\&/,&unescape($value));
8534: } else {
8535: $returnhash->{&unescape($name)}=&unescape($value);
8536: }
8537: }
8538: return 'ok';
8539: }
8540:
8541: return $response;
8542: }
8543:
8544: sub auto_possible_instcodes {
8545: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8546: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8547: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8548: return;
8549: }
8550: my (@homeservers,$uhome);
8551: if (defined(&domain($domain,'primary'))) {
8552: $uhome=&domain($domain,'primary');
8553: push(@homeservers,&domain($domain,'primary'));
8554: } else {
8555: my %servers = &get_servers($domain,'library');
8556: foreach my $tryserver (keys(%servers)) {
8557: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8558: push(@homeservers,$tryserver);
8559: }
8560: }
8561: }
8562: my $response;
8563: foreach my $server (@homeservers) {
8564: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8565: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8566: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8567: split(':',$response);
8568: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8569: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8570: foreach my $item (split('&',$cat_title)) {
8571: my ($name,$value)=split('=',$item);
8572: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8573: }
8574: foreach my $item (split('&',$cat_order)) {
8575: my ($name,$value)=split('=',$item);
8576: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8577: }
8578: return 'ok';
8579: }
8580: return $response;
8581: }
8582:
8583: sub auto_courserequest_checks {
8584: my ($dom) = @_;
8585: my ($homeserver,%validations);
8586: if ($dom =~ /^$match_domain$/) {
8587: $homeserver = &domain($dom,'primary');
8588: }
8589: unless ($homeserver eq 'no_host') {
8590: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8591: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8592: my @items = split(/&/,$response);
8593: foreach my $item (@items) {
8594: my ($key,$value) = split('=',$item);
8595: $validations{&unescape($key)} = &thaw_unescape($value);
8596: }
8597: }
8598: }
8599: return %validations;
8600: }
8601:
8602: sub auto_courserequest_validation {
8603: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8604: my ($homeserver,$response);
8605: if ($dom =~ /^$match_domain$/) {
8606: $homeserver = &domain($dom,'primary');
8607: }
8608: unless ($homeserver eq 'no_host') {
8609: my $customdata;
8610: if (ref($custominfo) eq 'HASH') {
8611: $customdata = &freeze_escape($custominfo);
8612: }
8613: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8614: ':'.&escape($crstype).':'.&escape($inststatuslist).
8615: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8616: $customdata,$homeserver));
8617: }
8618: return $response;
8619: }
8620:
8621: sub auto_validate_class_sec {
8622: my ($cdom,$cnum,$owners,$inst_class) = @_;
8623: my $homeserver = &homeserver($cnum,$cdom);
8624: my $ownerlist;
8625: if (ref($owners) eq 'ARRAY') {
8626: $ownerlist = join(',',@{$owners});
8627: } else {
8628: $ownerlist = $owners;
8629: }
8630: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8631: &escape($ownerlist).':'.$cdom,$homeserver);
8632: return $response;
8633: }
8634:
8635: sub auto_crsreq_update {
8636: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8637: $code,$accessstart,$accessend,$inbound) = @_;
8638: my ($homeserver,%crsreqresponse);
8639: if ($cdom =~ /^$match_domain$/) {
8640: $homeserver = &domain($cdom,'primary');
8641: }
8642: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8643: my $info;
8644: if (ref($inbound) eq 'HASH') {
8645: $info = &freeze_escape($inbound);
8646: }
8647: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8648: ':'.&escape($action).':'.&escape($ownername).':'.
8649: &escape($ownerdomain).':'.&escape($fullname).':'.
8650: &escape($title).':'.&escape($code).':'.
8651: &escape($accessstart).':'.&escape($accessend).':'.$info,
8652: $homeserver);
8653: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8654: my @items = split(/&/,$response);
8655: foreach my $item (@items) {
8656: my ($key,$value) = split('=',$item);
8657: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8658: }
8659: }
8660: }
8661: return \%crsreqresponse;
8662: }
8663:
8664: sub auto_export_grades {
8665: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8666: my ($homeserver,%exportresponse);
8667: if ($cdom =~ /^$match_domain$/) {
8668: $homeserver = &domain($cdom,'primary');
8669: }
8670: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8671: my $info;
8672: if (ref($inforef) eq 'HASH') {
8673: $info = &freeze_escape($inforef);
8674: }
8675: if (ref($gradesref) eq 'HASH') {
8676: my $grades = &freeze_escape($gradesref);
8677: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
8678: $info.':'.$grades,$homeserver);
8679: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
8680: my @items = split(/&/,$response);
8681: foreach my $item (@items) {
8682: my ($key,$value) = split('=',$item);
8683: $exportresponse{&unescape($key)} = &thaw_unescape($value);
8684: }
8685: }
8686: }
8687: }
8688: return \%exportresponse;
8689: }
8690:
8691: sub check_instcode_cloning {
8692: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8693: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8694: return;
8695: }
8696: my $canclone;
8697: if (@{$code_order} > 0) {
8698: my $instcoderegexp ='^';
8699: my @clonecodes = split(/\&/,$cloner);
8700: foreach my $item (@{$code_order}) {
8701: if (grep(/^\Q$item\E=/,@clonecodes)) {
8702: foreach my $pair (@clonecodes) {
8703: my ($key,$val) = split(/\=/,$pair,2);
8704: $val = &unescape($val);
8705: if ($key eq $item) {
8706: $instcoderegexp .= '('.$val.')';
8707: last;
8708: }
8709: }
8710: } else {
8711: $instcoderegexp .= $codedefaults->{$item};
8712: }
8713: }
8714: $instcoderegexp .= '$';
8715: my (@from,@to);
8716: eval {
8717: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8718: (@to) = ($clonetocode =~ /$instcoderegexp/);
8719: };
8720: if ((@from > 0) && (@to > 0)) {
8721: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8722: if (!@diffs) {
8723: $canclone = 1;
8724: }
8725: }
8726: }
8727: return $canclone;
8728: }
8729:
8730: sub default_instcode_cloning {
8731: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8732: my (%codedefaults,@code_order,$canclone);
8733: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8734: %codedefaults = %{$codedefaultsref};
8735: @code_order = @{$codeorderref};
8736: } elsif ($clonedom) {
8737: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8738: }
8739: if (($domdefclone) && (@code_order)) {
8740: my @clonecodes = split(/\+/,$domdefclone);
8741: my $instcoderegexp ='^';
8742: foreach my $item (@code_order) {
8743: if (grep(/^\Q$item\E$/,@clonecodes)) {
8744: $instcoderegexp .= '('.$codedefaults{$item}.')';
8745: } else {
8746: $instcoderegexp .= $codedefaults{$item};
8747: }
8748: }
8749: $instcoderegexp .= '$';
8750: my (@from,@to);
8751: eval {
8752: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8753: (@to) = ($clonetocode =~ /$instcoderegexp/);
8754: };
8755: if ((@from > 0) && (@to > 0)) {
8756: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8757: if (!@diffs) {
8758: $canclone = 1;
8759: }
8760: }
8761: }
8762: return $canclone;
8763: }
8764:
8765: # ------------------------------------------------------- Course Group routines
8766:
8767: sub get_coursegroups {
8768: my ($cdom,$cnum,$group,$namespace) = @_;
8769: return(&dump($namespace,$cdom,$cnum,$group));
8770: }
8771:
8772: sub modify_coursegroup {
8773: my ($cdom,$cnum,$groupsettings) = @_;
8774: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8775: }
8776:
8777: sub toggle_coursegroup_status {
8778: my ($cdom,$cnum,$group,$action) = @_;
8779: my ($from_namespace,$to_namespace);
8780: if ($action eq 'delete') {
8781: $from_namespace = 'coursegroups';
8782: $to_namespace = 'deleted_groups';
8783: } else {
8784: $from_namespace = 'deleted_groups';
8785: $to_namespace = 'coursegroups';
8786: }
8787: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8788: if (my $tmp = &error(%curr_group)) {
8789: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8790: return ('read error',$tmp);
8791: } else {
8792: my %savedsettings = %curr_group;
8793: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8794: my $deloutcome;
8795: if ($result eq 'ok') {
8796: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8797: } else {
8798: return ('write error',$result);
8799: }
8800: if ($deloutcome eq 'ok') {
8801: return 'ok';
8802: } else {
8803: return ('delete error',$deloutcome);
8804: }
8805: }
8806: }
8807:
8808: sub modify_group_roles {
8809: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8810: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8811: my $role = 'gr/'.&escape($userprivs);
8812: my ($uname,$udom) = split(/:/,$user);
8813: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8814: if ($result eq 'ok') {
8815: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8816: }
8817: return $result;
8818: }
8819:
8820: sub modify_coursegroup_membership {
8821: my ($cdom,$cnum,$membership) = @_;
8822: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8823: return $result;
8824: }
8825:
8826: sub get_active_groups {
8827: my ($udom,$uname,$cdom,$cnum) = @_;
8828: my $now = time;
8829: my %groups = ();
8830: foreach my $key (keys(%env)) {
8831: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8832: my ($start,$end) = split(/\./,$env{$key});
8833: if (($end!=0) && ($end<$now)) { next; }
8834: if (($start!=0) && ($start>$now)) { next; }
8835: if ($1 eq $cdom && $2 eq $cnum) {
8836: $groups{$3} = $env{$key} ;
8837: }
8838: }
8839: }
8840: return %groups;
8841: }
8842:
8843: sub get_group_membership {
8844: my ($cdom,$cnum,$group) = @_;
8845: return(&dump('groupmembership',$cdom,$cnum,$group));
8846: }
8847:
8848: sub get_users_groups {
8849: my ($udom,$uname,$courseid) = @_;
8850: my @usersgroups;
8851: my $cachetime=1800;
8852:
8853: my $hashid="$udom:$uname:$courseid";
8854: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8855: if (defined($cached)) {
8856: @usersgroups = split(/:/,$grouplist);
8857: } else {
8858: $grouplist = '';
8859: my $courseurl = &courseid_to_courseurl($courseid);
8860: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8861: my $access_end = $env{'course.'.$courseid.
8862: '.default_enrollment_end_date'};
8863: my $now = time;
8864: foreach my $key (keys(%roleshash)) {
8865: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8866: my $group = $1;
8867: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8868: my $start = $2;
8869: my $end = $1;
8870: if ($start == -1) { next; } # deleted from group
8871: if (($start!=0) && ($start>$now)) { next; }
8872: if (($end!=0) && ($end<$now)) {
8873: if ($access_end && $access_end < $now) {
8874: if ($access_end - $end < 86400) {
8875: push(@usersgroups,$group);
8876: }
8877: }
8878: next;
8879: }
8880: push(@usersgroups,$group);
8881: }
8882: }
8883: }
8884: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8885: $grouplist = join(':',@usersgroups);
8886: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8887: }
8888: return @usersgroups;
8889: }
8890:
8891: sub devalidate_getgroups_cache {
8892: my ($udom,$uname,$cdom,$cnum)=@_;
8893: my $courseid = $cdom.'_'.$cnum;
8894:
8895: my $hashid="$udom:$uname:$courseid";
8896: &devalidate_cache_new('getgroups',$hashid);
8897: }
8898:
8899: # ------------------------------------------------------------------ Plain Text
8900:
8901: sub plaintext {
8902: my ($short,$type,$cid,$forcedefault) = @_;
8903: if ($short =~ m{^cr/}) {
8904: return (split('/',$short))[-1];
8905: }
8906: if (!defined($cid)) {
8907: $cid = $env{'request.course.id'};
8908: }
8909: my %rolenames = (
8910: Course => 'std',
8911: Community => 'alt1',
8912: Placement => 'std',
8913: );
8914: if ($cid ne '') {
8915: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8916: unless ($forcedefault) {
8917: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8918: &Apache::lonlocal::mt_escape(\$roletext);
8919: return &Apache::lonlocal::mt($roletext);
8920: }
8921: }
8922: }
8923: if ((defined($type)) && (defined($rolenames{$type})) &&
8924: (defined($rolenames{$type})) &&
8925: (defined($prp{$short}{$rolenames{$type}}))) {
8926: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8927: } elsif ($cid ne '') {
8928: my $crstype = $env{'course.'.$cid.'.type'};
8929: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8930: (defined($prp{$short}{$rolenames{$crstype}}))) {
8931: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8932: }
8933: }
8934: return &Apache::lonlocal::mt($prp{$short}{'std'});
8935: }
8936:
8937: # ----------------------------------------------------------------- Assign Role
8938:
8939: sub assignrole {
8940: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8941: $context)=@_;
8942: my $mrole;
8943: if ($role =~ /^cr\//) {
8944: my $cwosec=$url;
8945: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8946: unless (&allowed('ccr',$cwosec)) {
8947: my $refused = 1;
8948: if ($context eq 'requestcourses') {
8949: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8950: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8951: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8952: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8953: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8954: if ($crsenv{'internal.courseowner'} eq
8955: $env{'user.name'}.':'.$env{'user.domain'}) {
8956: $refused = '';
8957: }
8958: }
8959: }
8960: }
8961: }
8962: if ($refused) {
8963: &logthis('Refused custom assignrole: '.
8964: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8965: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8966: return 'refused';
8967: }
8968: }
8969: $mrole='cr';
8970: } elsif ($role =~ /^gr\//) {
8971: my $cwogrp=$url;
8972: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8973: unless (&allowed('mdg',$cwogrp)) {
8974: &logthis('Refused group assignrole: '.
8975: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8976: $env{'user.name'}.' at '.$env{'user.domain'});
8977: return 'refused';
8978: }
8979: $mrole='gr';
8980: } else {
8981: my $cwosec=$url;
8982: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8983: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8984: my $refused;
8985: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8986: if (!(&allowed('c'.$role,$url))) {
8987: $refused = 1;
8988: }
8989: } else {
8990: $refused = 1;
8991: }
8992: if ($refused) {
8993: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8994: if (!$selfenroll && $context eq 'course') {
8995: my %crsenv;
8996: if ($role eq 'cc' || $role eq 'co') {
8997: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8998: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8999: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9000: if ($crsenv{'internal.courseowner'} eq
9001: $env{'user.name'}.':'.$env{'user.domain'}) {
9002: $refused = '';
9003: }
9004: }
9005: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9006: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9007: if ($crsenv{'internal.courseowner'} eq
9008: $env{'user.name'}.':'.$env{'user.domain'}) {
9009: $refused = '';
9010: }
9011: }
9012: }
9013: }
9014: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9015: $refused = '';
9016: } elsif ($context eq 'requestcourses') {
9017: my @possroles = ('st','ta','ep','in','cc','co');
9018: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9019: my $wrongcc;
9020: if ($cnum =~ /^$match_community$/) {
9021: $wrongcc = 1 if ($role eq 'cc');
9022: } else {
9023: $wrongcc = 1 if ($role eq 'co');
9024: }
9025: unless ($wrongcc) {
9026: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9027: if ($crsenv{'internal.courseowner'} eq
9028: $env{'user.name'}.':'.$env{'user.domain'}) {
9029: $refused = '';
9030: }
9031: }
9032: }
9033: } elsif ($context eq 'requestauthor') {
9034: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9035: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9036: if ($env{'environment.requestauthor'} eq 'automatic') {
9037: $refused = '';
9038: } else {
9039: my %domdefaults = &get_domain_defaults($udom);
9040: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9041: my $checkbystatus;
9042: if ($env{'user.adv'}) {
9043: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9044: if ($disposition eq 'automatic') {
9045: $refused = '';
9046: } elsif ($disposition eq '') {
9047: $checkbystatus = 1;
9048: }
9049: } else {
9050: $checkbystatus = 1;
9051: }
9052: if ($checkbystatus) {
9053: if ($env{'environment.inststatus'}) {
9054: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9055: foreach my $type (@inststatuses) {
9056: if (($type ne '') &&
9057: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9058: $refused = '';
9059: }
9060: }
9061: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9062: $refused = '';
9063: }
9064: }
9065: }
9066: }
9067: }
9068: }
9069: if ($refused) {
9070: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9071: ' '.$role.' '.$end.' '.$start.' by '.
9072: $env{'user.name'}.' at '.$env{'user.domain'});
9073: return 'refused';
9074: }
9075: }
9076: } elsif ($role eq 'au') {
9077: if ($url ne '/'.$udom.'/') {
9078: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9079: ' to assign author role for '.$uname.':'.$udom.
9080: ' in domain: '.$url.' refused (wrong domain).');
9081: return 'refused';
9082: }
9083: }
9084: $mrole=$role;
9085: }
9086: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9087: "$udom:$uname:$url".'_'."$mrole=$role";
9088: if ($end) { $command.='_'.$end; }
9089: if ($start) {
9090: if ($end) {
9091: $command.='_'.$start;
9092: } else {
9093: $command.='_0_'.$start;
9094: }
9095: }
9096: my $origstart = $start;
9097: my $origend = $end;
9098: my $delflag;
9099: # actually delete
9100: if ($deleteflag) {
9101: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9102: # modify command to delete the role
9103: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9104: "$udom:$uname:$url".'_'."$mrole";
9105: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9106: # set start and finish to negative values for userrolelog
9107: $start=-1;
9108: $end=-1;
9109: $delflag = 1;
9110: }
9111: }
9112: # send command
9113: my $answer=&reply($command,&homeserver($uname,$udom));
9114: # log new user role if status is ok
9115: if ($answer eq 'ok') {
9116: &userrolelog($role,$uname,$udom,$url,$start,$end);
9117: if (($role eq 'cc') || ($role eq 'in') ||
9118: ($role eq 'ep') || ($role eq 'ad') ||
9119: ($role eq 'ta') || ($role eq 'st') ||
9120: ($role=~/^cr/) || ($role eq 'gr') ||
9121: ($role eq 'co')) {
9122: # for course roles, perform group memberships changes triggered by role change.
9123: unless ($role =~ /^gr/) {
9124: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9125: $origstart,$selfenroll,$context);
9126: }
9127: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9128: $selfenroll,$context);
9129: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9130: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh')) {
9131: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9132: $context);
9133: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9134: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9135: $context);
9136: }
9137: if ($role eq 'cc') {
9138: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9139: }
9140: }
9141: return $answer;
9142: }
9143:
9144: sub autoupdate_coowners {
9145: my ($url,$end,$start,$uname,$udom) = @_;
9146: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9147: if (($cdom ne '') && ($cnum ne '')) {
9148: my $now = time;
9149: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9150: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9151: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9152: my $instcode = $coursehash{'internal.coursecode'};
9153: if ($instcode ne '') {
9154: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9155: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9156: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9157: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9158: if ($result eq 'valid') {
9159: if ($coursehash{'internal.co-owners'}) {
9160: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9161: push(@newcoowners,$coowner);
9162: }
9163: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9164: push(@newcoowners,$uname.':'.$udom);
9165: }
9166: @newcoowners = sort(@newcoowners);
9167: } else {
9168: push(@newcoowners,$uname.':'.$udom);
9169: }
9170: } else {
9171: if ($coursehash{'internal.co-owners'}) {
9172: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9173: unless ($coowner eq $uname.':'.$udom) {
9174: push(@newcoowners,$coowner);
9175: }
9176: }
9177: unless (@newcoowners > 0) {
9178: $delcoowners = 1;
9179: $coowners = '';
9180: }
9181: }
9182: }
9183: if (@newcoowners || $delcoowners) {
9184: &store_coowners($cdom,$cnum,$coursehash{'home'},
9185: $delcoowners,@newcoowners);
9186: }
9187: }
9188: }
9189: }
9190: }
9191: }
9192: }
9193:
9194: sub store_coowners {
9195: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9196: my $cid = $cdom.'_'.$cnum;
9197: my ($coowners,$delresult,$putresult);
9198: if (@newcoowners) {
9199: $coowners = join(',',@newcoowners);
9200: my %coownershash = (
9201: 'internal.co-owners' => $coowners,
9202: );
9203: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9204: if ($putresult eq 'ok') {
9205: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9206: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9207: }
9208: }
9209: }
9210: if ($delcoowners) {
9211: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9212: if ($delresult eq 'ok') {
9213: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9214: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9215: }
9216: }
9217: }
9218: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9219: my %crsinfo =
9220: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9221: if (ref($crsinfo{$cid}) eq 'HASH') {
9222: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9223: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9224: }
9225: }
9226: }
9227:
9228: # -------------------------------------------------- Modify user authentication
9229: # Overrides without validation
9230:
9231: sub modifyuserauth {
9232: my ($udom,$uname,$umode,$upass)=@_;
9233: my $uhome=&homeserver($uname,$udom);
9234: unless (&allowed('mau',$udom)) { return 'refused'; }
9235: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9236: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9237: ' in domain '.$env{'request.role.domain'});
9238: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9239: &escape($upass),$uhome);
9240: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9241: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9242: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9243: &log($udom,,$uname,$uhome,
9244: 'Authentication changed by '.$env{'user.domain'}.', '.
9245: $env{'user.name'}.', '.$umode.
9246: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9247: unless ($reply eq 'ok') {
9248: &logthis('Authentication mode error: '.$reply);
9249: return 'error: '.$reply;
9250: }
9251: return 'ok';
9252: }
9253:
9254: # --------------------------------------------------------------- Modify a user
9255:
9256: sub modifyuser {
9257: my ($udom, $uname, $uid,
9258: $umode, $upass, $first,
9259: $middle, $last, $gene,
9260: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9261: $udom= &LONCAPA::clean_domain($udom);
9262: $uname=&LONCAPA::clean_username($uname);
9263: my $showcandelete = 'none';
9264: if (ref($candelete) eq 'ARRAY') {
9265: if (@{$candelete} > 0) {
9266: $showcandelete = join(', ',@{$candelete});
9267: }
9268: }
9269: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9270: $umode.', '.$first.', '.$middle.', '.
9271: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9272: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9273: ' desiredhome not specified').
9274: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9275: ' in domain '.$env{'request.role.domain'});
9276: my $uhome=&homeserver($uname,$udom,'true');
9277: my $newuser;
9278: if ($uhome eq 'no_host') {
9279: $newuser = 1;
9280: }
9281: # ----------------------------------------------------------------- Create User
9282: if (($uhome eq 'no_host') &&
9283: (($umode && $upass) || ($umode eq 'localauth'))) {
9284: my $unhome='';
9285: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9286: $unhome = $desiredhome;
9287: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9288: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9289: } else { # load balancing routine for determining $unhome
9290: my $loadm=10000000;
9291: my %servers = &get_servers($udom,'library');
9292: foreach my $tryserver (keys(%servers)) {
9293: my $answer=reply('load',$tryserver);
9294: if (($answer=~/\d+/) && ($answer<$loadm)) {
9295: $loadm=$answer;
9296: $unhome=$tryserver;
9297: }
9298: }
9299: }
9300: if (($unhome eq '') || ($unhome eq 'no_host')) {
9301: return 'error: unable to find a home server for '.$uname.
9302: ' in domain '.$udom;
9303: }
9304: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9305: &escape($upass),$unhome);
9306: unless ($reply eq 'ok') {
9307: return 'error: '.$reply;
9308: }
9309: $uhome=&homeserver($uname,$udom,'true');
9310: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9311: return 'error: unable verify users home machine.';
9312: }
9313: } # End of creation of new user
9314: # ---------------------------------------------------------------------- Add ID
9315: if ($uid) {
9316: $uid=~tr/A-Z/a-z/;
9317: my %uidhash=&idrget($udom,$uname);
9318: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9319: && (!$forceid)) {
9320: unless ($uid eq $uidhash{$uname}) {
9321: return 'error: user id "'.$uid.'" does not match '.
9322: 'current user id "'.$uidhash{$uname}.'".';
9323: }
9324: } else {
9325: &idput($udom,{$uname => $uid},$uhome,'ids');
9326: }
9327: }
9328: # -------------------------------------------------------------- Add names, etc
9329: my @tmp=&get('environment',
9330: ['firstname','middlename','lastname','generation','id',
9331: 'permanentemail','inststatus'],
9332: $udom,$uname);
9333: my (%names,%oldnames);
9334: if ($tmp[0] =~ m/^error:.*/) {
9335: %names=();
9336: } else {
9337: %names = @tmp;
9338: %oldnames = %names;
9339: }
9340: #
9341: # If name, email and/or uid are blank (e.g., because an uploaded file
9342: # of users did not contain them), do not overwrite existing values
9343: # unless field is in $candelete array ref.
9344: #
9345:
9346: my @fields = ('firstname','middlename','lastname','generation',
9347: 'permanentemail','id');
9348: my %newvalues;
9349: if (ref($candelete) eq 'ARRAY') {
9350: foreach my $field (@fields) {
9351: if (grep(/^\Q$field\E$/,@{$candelete})) {
9352: if ($field eq 'firstname') {
9353: $names{$field} = $first;
9354: } elsif ($field eq 'middlename') {
9355: $names{$field} = $middle;
9356: } elsif ($field eq 'lastname') {
9357: $names{$field} = $last;
9358: } elsif ($field eq 'generation') {
9359: $names{$field} = $gene;
9360: } elsif ($field eq 'permanentemail') {
9361: $names{$field} = $email;
9362: } elsif ($field eq 'id') {
9363: $names{$field} = $uid;
9364: }
9365: }
9366: }
9367: }
9368: if ($first) { $names{'firstname'} = $first; }
9369: if (defined($middle)) { $names{'middlename'} = $middle; }
9370: if ($last) { $names{'lastname'} = $last; }
9371: if (defined($gene)) { $names{'generation'} = $gene; }
9372: if ($email) {
9373: $email=~s/[^\w\@\.\-\,]//gs;
9374: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9375: }
9376: if ($uid) { $names{'id'} = $uid; }
9377: if (defined($inststatus)) {
9378: $names{'inststatus'} = '';
9379: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9380: if (ref($usertypes) eq 'HASH') {
9381: my @okstatuses;
9382: foreach my $item (split(/:/,$inststatus)) {
9383: if (defined($usertypes->{$item})) {
9384: push(@okstatuses,$item);
9385: }
9386: }
9387: if (@okstatuses) {
9388: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9389: }
9390: }
9391: }
9392: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9393: $umode.', '.$first.', '.$middle.', '.
9394: $last.', '.$gene.', '.$email.', '.$inststatus;
9395: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9396: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9397: } else {
9398: $logmsg .= ' during self creation';
9399: }
9400: my $changed;
9401: if ($newuser) {
9402: $changed = 1;
9403: } else {
9404: foreach my $field (@fields) {
9405: if ($names{$field} ne $oldnames{$field}) {
9406: $changed = 1;
9407: last;
9408: }
9409: }
9410: }
9411: unless ($changed) {
9412: $logmsg = 'No changes in user information needed for: '.$logmsg;
9413: &logthis($logmsg);
9414: return 'ok';
9415: }
9416: my $reply = &put('environment', \%names, $udom,$uname);
9417: if ($reply ne 'ok') {
9418: return 'error: '.$reply;
9419: }
9420: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9421: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9422: }
9423: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9424: &devalidate_cache_new('namescache',$uname.':'.$udom);
9425: $logmsg = 'Success modifying user '.$logmsg;
9426: &logthis($logmsg);
9427: return 'ok';
9428: }
9429:
9430: # -------------------------------------------------------------- Modify student
9431:
9432: sub modifystudent {
9433: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9434: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9435: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9436: if (!$cid) {
9437: unless ($cid=$env{'request.course.id'}) {
9438: return 'not_in_class';
9439: }
9440: }
9441: # --------------------------------------------------------------- Make the user
9442: my $reply=&modifyuser
9443: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9444: $desiredhome,$email,$inststatus);
9445: unless ($reply eq 'ok') { return $reply; }
9446: # This will cause &modify_student_enrollment to get the uid from the
9447: # student's environment
9448: $uid = undef if (!$forceid);
9449: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9450: $gene,$usec,$end,$start,$type,$locktype,
9451: $cid,$selfenroll,$context,$credits,$instsec);
9452: return $reply;
9453: }
9454:
9455: sub modify_student_enrollment {
9456: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9457: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9458: my ($cdom,$cnum,$chome);
9459: if (!$cid) {
9460: unless ($cid=$env{'request.course.id'}) {
9461: return 'not_in_class';
9462: }
9463: $cdom=$env{'course.'.$cid.'.domain'};
9464: $cnum=$env{'course.'.$cid.'.num'};
9465: } else {
9466: ($cdom,$cnum)=split(/_/,$cid);
9467: }
9468: $chome=$env{'course.'.$cid.'.home'};
9469: if (!$chome) {
9470: $chome=&homeserver($cnum,$cdom);
9471: }
9472: if (!$chome) { return 'unknown_course'; }
9473: # Make sure the user exists
9474: my $uhome=&homeserver($uname,$udom);
9475: if (($uhome eq '') || ($uhome eq 'no_host')) {
9476: return 'error: no such user';
9477: }
9478: # Get student data if we were not given enough information
9479: if (!defined($first) || $first eq '' ||
9480: !defined($last) || $last eq '' ||
9481: !defined($uid) || $uid eq '' ||
9482: !defined($middle) || $middle eq '' ||
9483: !defined($gene) || $gene eq '') {
9484: # They did not supply us with enough data to enroll the student, so
9485: # we need to pick up more information.
9486: my %tmp = &get('environment',
9487: ['firstname','middlename','lastname', 'generation','id']
9488: ,$udom,$uname);
9489:
9490: #foreach my $key (keys(%tmp)) {
9491: # &logthis("key $key = ".$tmp{$key});
9492: #}
9493: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9494: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9495: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9496: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9497: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9498: }
9499: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9500: my $user = "$uname:$udom";
9501: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9502: my $reply=cput('classlist',
9503: {$user =>
9504: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9505: $cdom,$cnum);
9506: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9507: &devalidate_getsection_cache($udom,$uname,$cid);
9508: } else {
9509: return 'error: '.$reply;
9510: }
9511: # Add student role to user
9512: my $uurl='/'.$cid;
9513: $uurl=~s/\_/\//g;
9514: if ($usec) {
9515: $uurl.='/'.$usec;
9516: }
9517: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9518: $selfenroll,$context);
9519: if ($result ne 'ok') {
9520: if ($old_entry{$user} ne '') {
9521: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9522: } else {
9523: $reply = &del('classlist',[$user],$cdom,$cnum);
9524: }
9525: }
9526: return $result;
9527: }
9528:
9529: sub format_name {
9530: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9531: my $name;
9532: if ($first ne 'lastname') {
9533: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9534: } else {
9535: if ($lastname=~/\S/) {
9536: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9537: $name=~s/\s+,/,/;
9538: } else {
9539: $name.= $firstname.' '.$middlename.' '.$generation;
9540: }
9541: }
9542: $name=~s/^\s+//;
9543: $name=~s/\s+$//;
9544: $name=~s/\s+/ /g;
9545: return $name;
9546: }
9547:
9548: # ------------------------------------------------- Write to course preferences
9549:
9550: sub writecoursepref {
9551: my ($courseid,%prefs)=@_;
9552: $courseid=~s/^\///;
9553: $courseid=~s/\_/\//g;
9554: my ($cdomain,$cnum)=split(/\//,$courseid);
9555: my $chome=homeserver($cnum,$cdomain);
9556: if (($chome eq '') || ($chome eq 'no_host')) {
9557: return 'error: no such course';
9558: }
9559: my $cstring='';
9560: foreach my $pref (keys(%prefs)) {
9561: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9562: }
9563: $cstring=~s/\&$//;
9564: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9565: }
9566:
9567: # ---------------------------------------------------------- Make/modify course
9568:
9569: sub createcourse {
9570: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9571: $course_owner,$crstype,$cnum,$context,$category)=@_;
9572: $url=&declutter($url);
9573: my $cid='';
9574: if ($context eq 'requestcourses') {
9575: my $can_create = 0;
9576: my ($ownername,$ownerdom) = split(':',$course_owner);
9577: if ($udom eq $ownerdom) {
9578: if (&usertools_access($ownername,$ownerdom,$category,undef,
9579: $context)) {
9580: $can_create = 1;
9581: }
9582: } else {
9583: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9584: $category);
9585: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9586: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9587: if (@curr > 0) {
9588: my @options = qw(approval validate autolimit);
9589: my $optregex = join('|',@options);
9590: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9591: $can_create = 1;
9592: }
9593: }
9594: }
9595: }
9596: if ($can_create) {
9597: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9598: unless (&allowed('ccc',$udom)) {
9599: return 'refused';
9600: }
9601: }
9602: } else {
9603: return 'refused';
9604: }
9605: } elsif (!&allowed('ccc',$udom)) {
9606: return 'refused';
9607: }
9608: # --------------------------------------------------------------- Get Unique ID
9609: my $uname;
9610: if ($cnum =~ /^$match_courseid$/) {
9611: my $chome=&homeserver($cnum,$udom,'true');
9612: if (($chome eq '') || ($chome eq 'no_host')) {
9613: $uname = $cnum;
9614: } else {
9615: $uname = &generate_coursenum($udom,$crstype);
9616: }
9617: } else {
9618: $uname = &generate_coursenum($udom,$crstype);
9619: }
9620: return $uname if ($uname =~ /^error/);
9621: # -------------------------------------------------- Check supplied server name
9622: if (!defined($course_server)) {
9623: if (defined(&domain($udom,'primary'))) {
9624: $course_server = &domain($udom,'primary');
9625: } else {
9626: $course_server = $env{'user.home'};
9627: }
9628: }
9629: my %host_servers =
9630: &Apache::lonnet::get_servers($udom,'library');
9631: unless ($host_servers{$course_server}) {
9632: return 'error: invalid home server for course: '.$course_server;
9633: }
9634: # ------------------------------------------------------------- Make the course
9635: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9636: $course_server);
9637: unless ($reply eq 'ok') { return 'error: '.$reply; }
9638: my $uhome=&homeserver($uname,$udom,'true');
9639: if (($uhome eq '') || ($uhome eq 'no_host')) {
9640: return 'error: no such course';
9641: }
9642: # ----------------------------------------------------------------- Course made
9643: # log existence
9644: my $now = time;
9645: my $newcourse = {
9646: $udom.'_'.$uname => {
9647: description => $description,
9648: inst_code => $inst_code,
9649: owner => $course_owner,
9650: type => $crstype,
9651: creator => $env{'user.name'}.':'.
9652: $env{'user.domain'},
9653: created => $now,
9654: context => $context,
9655: },
9656: };
9657: &courseidput($udom,$newcourse,$uhome,'notime');
9658: # set toplevel url
9659: my $topurl=$url;
9660: unless ($nonstandard) {
9661: # ------------------------------------------ For standard courses, make top url
9662: my $mapurl=&clutter($url);
9663: if ($mapurl eq '/res/') { $mapurl=''; }
9664: $env{'form.initmap'}=(<<ENDINITMAP);
9665: <map>
9666: <resource id="1" type="start"></resource>
9667: <resource id="2" src="$mapurl"></resource>
9668: <resource id="3" type="finish"></resource>
9669: <link index="1" from="1" to="2"></link>
9670: <link index="2" from="2" to="3"></link>
9671: </map>
9672: ENDINITMAP
9673: $topurl=&declutter(
9674: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9675: );
9676: }
9677: # ----------------------------------------------------------- Write preferences
9678: &writecoursepref($udom.'_'.$uname,
9679: ('description' => $description,
9680: 'url' => $topurl,
9681: 'internal.creator' => $env{'user.name'}.':'.
9682: $env{'user.domain'},
9683: 'internal.created' => $now,
9684: 'internal.creationcontext' => $context)
9685: );
9686: return '/'.$udom.'/'.$uname;
9687: }
9688:
9689: # ------------------------------------------------------------------- Create ID
9690: sub generate_coursenum {
9691: my ($udom,$crstype) = @_;
9692: my $domdesc = &domain($udom);
9693: return 'error: invalid domain' if ($domdesc eq '');
9694: my $first;
9695: if ($crstype eq 'Community') {
9696: $first = '0';
9697: } else {
9698: $first = int(1+rand(9));
9699: }
9700: my $uname=$first.
9701: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9702: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9703: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9704: # ----------------------------------------------- Make sure that does not exist
9705: my $uhome=&homeserver($uname,$udom,'true');
9706: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9707: if ($crstype eq 'Community') {
9708: $first = '0';
9709: } else {
9710: $first = int(1+rand(9));
9711: }
9712: $uname=$first.
9713: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9714: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9715: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9716: $uhome=&homeserver($uname,$udom,'true');
9717: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9718: return 'error: unable to generate unique course-ID';
9719: }
9720: }
9721: return $uname;
9722: }
9723:
9724: sub is_course {
9725: my ($cdom, $cnum) = scalar(@_) == 1 ?
9726: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9727:
9728: return unless $cdom and $cnum;
9729:
9730: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9731: '.');
9732:
9733: return unless(exists($courses{$cdom.'_'.$cnum}));
9734: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9735: }
9736:
9737: sub store_userdata {
9738: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9739: my $result;
9740: if ($datakey ne '') {
9741: if (ref($storehash) eq 'HASH') {
9742: if ($udom eq '' || $uname eq '') {
9743: $udom = $env{'user.domain'};
9744: $uname = $env{'user.name'};
9745: }
9746: my $uhome=&homeserver($uname,$udom);
9747: if (($uhome eq '') || ($uhome eq 'no_host')) {
9748: $result = 'error: no_host';
9749: } else {
9750: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9751: $storehash->{'host'} = $perlvar{'lonHostID'};
9752:
9753: my $namevalue='';
9754: foreach my $key (keys(%{$storehash})) {
9755: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9756: }
9757: $namevalue=~s/\&$//;
9758: unless ($namespace eq 'courserequests') {
9759: $datakey = &escape($datakey);
9760: }
9761: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9762: $namevalue,$uhome);
9763: }
9764: } else {
9765: $result = 'error: data to store was not a hash reference';
9766: }
9767: } else {
9768: $result= 'error: invalid requestkey';
9769: }
9770: return $result;
9771: }
9772:
9773: # ---------------------------------------------------------- Assign Custom Role
9774:
9775: sub assigncustomrole {
9776: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9777: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9778: $end,$start,$deleteflag,$selfenroll,$context);
9779: }
9780:
9781: # ----------------------------------------------------------------- Revoke Role
9782:
9783: sub revokerole {
9784: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9785: my $now=time;
9786: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9787: }
9788:
9789: # ---------------------------------------------------------- Revoke Custom Role
9790:
9791: sub revokecustomrole {
9792: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9793: my $now=time;
9794: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9795: $deleteflag,$selfenroll,$context);
9796: }
9797:
9798: # ------------------------------------------------------------ Disk usage
9799: sub diskusage {
9800: my ($udom,$uname,$directorypath,$getpropath)=@_;
9801: $directorypath =~ s/\/$//;
9802: my $listing=&reply('du2:'.&escape($directorypath).':'
9803: .&escape($getpropath).':'.&escape($uname).':'
9804: .&escape($udom),homeserver($uname,$udom));
9805: if ($listing eq 'unknown_cmd') {
9806: if ($getpropath) {
9807: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9808: }
9809: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9810: }
9811: return $listing;
9812: }
9813:
9814: sub is_locked {
9815: my ($file_name, $domain, $user, $which) = @_;
9816: my @check;
9817: my $is_locked;
9818: push (@check,$file_name);
9819: my %locked = &get('file_permissions',\@check,
9820: $env{'user.domain'},$env{'user.name'});
9821: my ($tmp)=keys(%locked);
9822: if ($tmp=~/^error:/) { undef(%locked); }
9823:
9824: if (ref($locked{$file_name}) eq 'ARRAY') {
9825: $is_locked = 'false';
9826: foreach my $entry (@{$locked{$file_name}}) {
9827: if (ref($entry) eq 'ARRAY') {
9828: $is_locked = 'true';
9829: if (ref($which) eq 'ARRAY') {
9830: push(@{$which},$entry);
9831: } else {
9832: last;
9833: }
9834: }
9835: }
9836: } else {
9837: $is_locked = 'false';
9838: }
9839: return $is_locked;
9840: }
9841:
9842: sub declutter_portfile {
9843: my ($file) = @_;
9844: $file =~ s{^(/portfolio/|portfolio/)}{/};
9845: return $file;
9846: }
9847:
9848: # ------------------------------------------------------------- Mark as Read Only
9849:
9850: sub mark_as_readonly {
9851: my ($domain,$user,$files,$what) = @_;
9852: my %current_permissions = &dump('file_permissions',$domain,$user);
9853: my ($tmp)=keys(%current_permissions);
9854: if ($tmp=~/^error:/) { undef(%current_permissions); }
9855: foreach my $file (@{$files}) {
9856: $file = &declutter_portfile($file);
9857: push(@{$current_permissions{$file}},$what);
9858: }
9859: &put('file_permissions',\%current_permissions,$domain,$user);
9860: return;
9861: }
9862:
9863: # ------------------------------------------------------------Save Selected Files
9864:
9865: sub save_selected_files {
9866: my ($user, $path, @files) = @_;
9867: my $filename = $user."savedfiles";
9868: my @other_files = &files_not_in_path($user, $path);
9869: open (OUT, '>'.$tmpdir.$filename);
9870: foreach my $file (@files) {
9871: print (OUT $env{'form.currentpath'}.$file."\n");
9872: }
9873: foreach my $file (@other_files) {
9874: print (OUT $file."\n");
9875: }
9876: close (OUT);
9877: return 'ok';
9878: }
9879:
9880: sub clear_selected_files {
9881: my ($user) = @_;
9882: my $filename = $user."savedfiles";
9883: open (OUT, '>'.LONCAPA::tempdir().$filename);
9884: print (OUT undef);
9885: close (OUT);
9886: return ("ok");
9887: }
9888:
9889: sub files_in_path {
9890: my ($user, $path) = @_;
9891: my $filename = $user."savedfiles";
9892: my %return_files;
9893: open (IN, '<'.LONCAPA::tempdir().$filename);
9894: while (my $line_in = <IN>) {
9895: chomp ($line_in);
9896: my @paths_and_file = split (m!/!, $line_in);
9897: my $file_part = pop (@paths_and_file);
9898: my $path_part = join ('/', @paths_and_file);
9899: $path_part.='/';
9900: my $path_and_file = $path_part.$file_part;
9901: if ($path_part eq $path) {
9902: $return_files{$file_part}= 'selected';
9903: }
9904: }
9905: close (IN);
9906: return (\%return_files);
9907: }
9908:
9909: # called in portfolio select mode, to show files selected NOT in current directory
9910: sub files_not_in_path {
9911: my ($user, $path) = @_;
9912: my $filename = $user."savedfiles";
9913: my @return_files;
9914: my $path_part;
9915: open(IN, '<'.LONCAPA::.$filename);
9916: while (my $line = <IN>) {
9917: #ok, I know it's clunky, but I want it to work
9918: my @paths_and_file = split(m|/|, $line);
9919: my $file_part = pop(@paths_and_file);
9920: chomp($file_part);
9921: my $path_part = join('/', @paths_and_file);
9922: $path_part .= '/';
9923: my $path_and_file = $path_part.$file_part;
9924: if ($path_part ne $path) {
9925: push(@return_files, ($path_and_file));
9926: }
9927: }
9928: close(OUT);
9929: return (@return_files);
9930: }
9931:
9932: #------------------------------Submitted/Handedback Portfolio Files Versioning
9933:
9934: sub portfiles_versioning {
9935: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
9936: my $portfolio_root = '/userfiles/portfolio';
9937: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
9938: foreach my $file (@{$portfiles}) {
9939: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
9940: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
9941: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
9942: my $getpropath = 1;
9943: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
9944: $stu_name,$getpropath);
9945: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
9946: my $new_answer =
9947: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
9948: if ($new_answer ne 'problem getting file') {
9949: push(@{$versioned_portfiles}, $directory.$new_answer);
9950: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
9951: [$symb,$env{'request.course.id'},'graded']);
9952: }
9953: }
9954: }
9955:
9956: sub get_next_version {
9957: my ($answer_name, $answer_ext, $dir_list) = @_;
9958: my $version;
9959: if (ref($dir_list) eq 'ARRAY') {
9960: foreach my $row (@{$dir_list}) {
9961: my ($file) = split(/\&/,$row,2);
9962: my ($file_name,$file_version,$file_ext) =
9963: &file_name_version_ext($file);
9964: if (($file_name eq $answer_name) &&
9965: ($file_ext eq $answer_ext)) {
9966: # gets here if filename and extension match,
9967: # regardless of version
9968: if ($file_version ne '') {
9969: # a versioned file is found so save it for later
9970: if ($file_version > $version) {
9971: $version = $file_version;
9972: }
9973: }
9974: }
9975: }
9976: }
9977: $version ++;
9978: return($version);
9979: }
9980:
9981: sub version_selected_portfile {
9982: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
9983: my ($answer_name,$answer_ver,$answer_ext) =
9984: &file_name_version_ext($file_name);
9985: my $new_answer;
9986: $env{'form.copy'} =
9987: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
9988: if($env{'form.copy'} eq '-1') {
9989: $new_answer = 'problem getting file';
9990: } else {
9991: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
9992: my $copy_result =
9993: &finishuserfileupload($stu_name,$domain,'copy',
9994: '/portfolio'.$directory.$new_answer);
9995: }
9996: undef($env{'form.copy'});
9997: return ($new_answer);
9998: }
9999:
10000: sub file_name_version_ext {
10001: my ($file)=@_;
10002: my @file_parts = split(/\./, $file);
10003: my ($name,$version,$ext);
10004: if (@file_parts > 1) {
10005: $ext=pop(@file_parts);
10006: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10007: $version=pop(@file_parts);
10008: }
10009: $name=join('.',@file_parts);
10010: } else {
10011: $name=join('.',@file_parts);
10012: }
10013: return($name,$version,$ext);
10014: }
10015:
10016: #----------------------------------------------Get portfolio file permissions
10017:
10018: sub get_portfile_permissions {
10019: my ($domain,$user) = @_;
10020: my %current_permissions = &dump('file_permissions',$domain,$user);
10021: my ($tmp)=keys(%current_permissions);
10022: if ($tmp=~/^error:/) { undef(%current_permissions); }
10023: return \%current_permissions;
10024: }
10025:
10026: #---------------------------------------------Get portfolio file access controls
10027:
10028: sub get_access_controls {
10029: my ($current_permissions,$group,$file) = @_;
10030: my %access;
10031: my $real_file = $file;
10032: $file =~ s/\.meta$//;
10033: if (defined($file)) {
10034: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10035: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10036: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10037: }
10038: }
10039: } else {
10040: foreach my $key (keys(%{$current_permissions})) {
10041: if ($key =~ /\0accesscontrol$/) {
10042: if (defined($group)) {
10043: if ($key !~ m-^\Q$group\E/-) {
10044: next;
10045: }
10046: }
10047: my ($fullpath) = split(/\0/,$key);
10048: if (ref($$current_permissions{$key}) eq 'HASH') {
10049: foreach my $control (keys(%{$$current_permissions{$key}})) {
10050: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10051: }
10052: }
10053: }
10054: }
10055: }
10056: return %access;
10057: }
10058:
10059: sub modify_access_controls {
10060: my ($file_name,$changes,$domain,$user)=@_;
10061: my ($outcome,$deloutcome);
10062: my %store_permissions;
10063: my %new_values;
10064: my %new_control;
10065: my %translation;
10066: my @deletions = ();
10067: my $now = time;
10068: if (exists($$changes{'activate'})) {
10069: if (ref($$changes{'activate'}) eq 'HASH') {
10070: my @newitems = sort(keys(%{$$changes{'activate'}}));
10071: my $numnew = scalar(@newitems);
10072: for (my $i=0; $i<$numnew; $i++) {
10073: my $newkey = $newitems[$i];
10074: my $newid = &Apache::loncommon::get_cgi_id();
10075: if ($newkey =~ /^\d+:/) {
10076: $newkey =~ s/^(\d+)/$newid/;
10077: $translation{$1} = $newid;
10078: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10079: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10080: $translation{$1} = $newid;
10081: }
10082: $new_values{$file_name."\0".$newkey} =
10083: $$changes{'activate'}{$newitems[$i]};
10084: $new_control{$newkey} = $now;
10085: }
10086: }
10087: }
10088: my %todelete;
10089: my %changed_items;
10090: foreach my $action ('delete','update') {
10091: if (exists($$changes{$action})) {
10092: if (ref($$changes{$action}) eq 'HASH') {
10093: foreach my $key (keys(%{$$changes{$action}})) {
10094: my ($itemnum) = ($key =~ /^([^:]+):/);
10095: if ($action eq 'delete') {
10096: $todelete{$itemnum} = 1;
10097: } else {
10098: $changed_items{$itemnum} = $key;
10099: }
10100: }
10101: }
10102: }
10103: }
10104: # get lock on access controls for file.
10105: my $lockhash = {
10106: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10107: ':'.$env{'user.domain'},
10108: };
10109: my $tries = 0;
10110: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10111:
10112: while (($gotlock ne 'ok') && $tries < 10) {
10113: $tries ++;
10114: sleep(0.1);
10115: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10116: }
10117: if ($gotlock eq 'ok') {
10118: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10119: my ($tmp)=keys(%curr_permissions);
10120: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10121: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10122: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10123: if (ref($curr_controls) eq 'HASH') {
10124: foreach my $control_item (keys(%{$curr_controls})) {
10125: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10126: if (defined($todelete{$itemnum})) {
10127: push(@deletions,$file_name."\0".$control_item);
10128: } else {
10129: if (defined($changed_items{$itemnum})) {
10130: $new_control{$changed_items{$itemnum}} = $now;
10131: push(@deletions,$file_name."\0".$control_item);
10132: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10133: } else {
10134: $new_control{$control_item} = $$curr_controls{$control_item};
10135: }
10136: }
10137: }
10138: }
10139: }
10140: my ($group);
10141: if (&is_course($domain,$user)) {
10142: ($group,my $file) = split(/\//,$file_name,2);
10143: }
10144: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10145: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10146: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10147: # remove lock
10148: my @del_lock = ($file_name."\0".'locked_access_records');
10149: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10150: my $sqlresult =
10151: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10152: $group);
10153: } else {
10154: $outcome = "error: could not obtain lockfile\n";
10155: }
10156: return ($outcome,$deloutcome,\%new_values,\%translation);
10157: }
10158:
10159: sub make_public_indefinitely {
10160: my (@requrl) = @_;
10161: return &automated_portfile_access('public',\@requrl);
10162: }
10163:
10164: sub automated_portfile_access {
10165: my ($accesstype,$addsref,$delsref,$info) = @_;
10166: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10167: return 'invalid';
10168: }
10169: my %urls;
10170: if (ref($addsref) eq 'ARRAY') {
10171: foreach my $requrl (@{$addsref}) {
10172: if (&is_portfolio_url($requrl)) {
10173: unless (exists($urls{$requrl})) {
10174: $urls{$requrl} = 'add';
10175: }
10176: }
10177: }
10178: }
10179: if (ref($delsref) eq 'ARRAY') {
10180: foreach my $requrl (@{$delsref}) {
10181: if (&is_portfolio_url($requrl)) {
10182: unless (exists($urls{$requrl})) {
10183: $urls{$requrl} = 'delete';
10184: }
10185: }
10186: }
10187: }
10188: unless (keys(%urls)) {
10189: return 'invalid';
10190: }
10191: my $ip;
10192: if ($accesstype eq 'ip') {
10193: if (ref($info) eq 'HASH') {
10194: if ($info->{'ip'} ne '') {
10195: $ip = $info->{'ip'};
10196: }
10197: }
10198: if ($ip eq '') {
10199: return 'invalid';
10200: }
10201: }
10202: my $errors;
10203: my $now = time;
10204: my %current_perms;
10205: foreach my $requrl (sort(keys(%urls))) {
10206: my $action;
10207: if ($urls{$requrl} eq 'add') {
10208: $action = 'activate';
10209: } else {
10210: $action = 'none';
10211: }
10212: my $aclnum = 0;
10213: my (undef,$udom,$unum,$file_name,$group) =
10214: &parse_portfolio_url($requrl);
10215: unless (exists($current_perms{$unum.':'.$udom})) {
10216: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10217: }
10218: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10219: $group,$file_name);
10220: foreach my $key (keys(%{$access_controls{$file_name}})) {
10221: my ($num,$scope,$end,$start) =
10222: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10223: if ($scope eq $accesstype) {
10224: if (($start <= $now) && ($end == 0)) {
10225: if ($accesstype eq 'ip') {
10226: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10227: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10228: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10229: if ($urls{$requrl} eq 'add') {
10230: $action = 'none';
10231: last;
10232: } else {
10233: $action = 'delete';
10234: $aclnum = $num;
10235: last;
10236: }
10237: }
10238: }
10239: }
10240: } elsif ($accesstype eq 'public') {
10241: if ($urls{$requrl} eq 'add') {
10242: $action = 'none';
10243: last;
10244: } else {
10245: $action = 'delete';
10246: $aclnum = $num;
10247: last;
10248: }
10249: }
10250: } elsif ($accesstype eq 'public') {
10251: $action = 'update';
10252: $aclnum = $num;
10253: last;
10254: }
10255: }
10256: }
10257: if ($action eq 'none') {
10258: next;
10259: } else {
10260: my %changes;
10261: my $newend = 0;
10262: my $newstart = $now;
10263: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10264: $changes{$action}{$newkey} = {
10265: type => $accesstype,
10266: time => {
10267: start => $newstart,
10268: end => $newend,
10269: },
10270: };
10271: if ($accesstype eq 'ip') {
10272: $changes{$action}{$newkey}{'ip'} = [$ip];
10273: }
10274: my ($outcome,$deloutcome,$new_values,$translation) =
10275: &modify_access_controls($file_name,\%changes,$udom,$unum);
10276: unless ($outcome eq 'ok') {
10277: $errors .= $outcome.' ';
10278: }
10279: }
10280: }
10281: if ($errors) {
10282: $errors =~ s/\s$//;
10283: return $errors;
10284: } else {
10285: return 'ok';
10286: }
10287: }
10288:
10289: #------------------------------------------------------Get Marked as Read Only
10290:
10291: sub get_marked_as_readonly {
10292: my ($domain,$user,$what,$group) = @_;
10293: my $current_permissions = &get_portfile_permissions($domain,$user);
10294: my @readonly_files;
10295: my $cmp1=$what;
10296: if (ref($what)) { $cmp1=join('',@{$what}) };
10297: while (my ($file_name,$value) = each(%{$current_permissions})) {
10298: if (defined($group)) {
10299: if ($file_name !~ m-^\Q$group\E/-) {
10300: next;
10301: }
10302: }
10303: if (ref($value) eq "ARRAY"){
10304: foreach my $stored_what (@{$value}) {
10305: my $cmp2=$stored_what;
10306: if (ref($stored_what) eq 'ARRAY') {
10307: $cmp2=join('',@{$stored_what});
10308: }
10309: if ($cmp1 eq $cmp2) {
10310: push(@readonly_files, $file_name);
10311: last;
10312: } elsif (!defined($what)) {
10313: push(@readonly_files, $file_name);
10314: last;
10315: }
10316: }
10317: }
10318: }
10319: return @readonly_files;
10320: }
10321: #-----------------------------------------------------------Get Marked as Read Only Hash
10322:
10323: sub get_marked_as_readonly_hash {
10324: my ($current_permissions,$group,$what) = @_;
10325: my %readonly_files;
10326: while (my ($file_name,$value) = each(%{$current_permissions})) {
10327: if (defined($group)) {
10328: if ($file_name !~ m-^\Q$group\E/-) {
10329: next;
10330: }
10331: }
10332: if (ref($value) eq "ARRAY"){
10333: foreach my $stored_what (@{$value}) {
10334: if (ref($stored_what) eq 'ARRAY') {
10335: foreach my $lock_descriptor(@{$stored_what}) {
10336: if ($lock_descriptor eq 'graded') {
10337: $readonly_files{$file_name} = 'graded';
10338: } elsif ($lock_descriptor eq 'handback') {
10339: $readonly_files{$file_name} = 'handback';
10340: } else {
10341: if (!exists($readonly_files{$file_name})) {
10342: $readonly_files{$file_name} = 'locked';
10343: }
10344: }
10345: }
10346: }
10347: }
10348: }
10349: }
10350: return %readonly_files;
10351: }
10352: # ------------------------------------------------------------ Unmark as Read Only
10353:
10354: sub unmark_as_readonly {
10355: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10356: # for portfolio submissions, $what contains [$symb,$crsid]
10357: my ($domain,$user,$what,$file_name,$group) = @_;
10358: $file_name = &declutter_portfile($file_name);
10359: my $symb_crs = $what;
10360: if (ref($what)) { $symb_crs=join('',@$what); }
10361: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10362: my ($tmp)=keys(%current_permissions);
10363: if ($tmp=~/^error:/) { undef(%current_permissions); }
10364: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10365: foreach my $file (@readonly_files) {
10366: my $clean_file = &declutter_portfile($file);
10367: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10368: my $current_locks = $current_permissions{$file};
10369: my @new_locks;
10370: my @del_keys;
10371: if (ref($current_locks) eq "ARRAY"){
10372: foreach my $locker (@{$current_locks}) {
10373: my $compare=$locker;
10374: if (ref($locker) eq 'ARRAY') {
10375: $compare=join('',@{$locker});
10376: if ($compare ne $symb_crs) {
10377: push(@new_locks, $locker);
10378: }
10379: }
10380: }
10381: if (scalar(@new_locks) > 0) {
10382: $current_permissions{$file} = \@new_locks;
10383: } else {
10384: push(@del_keys, $file);
10385: &del('file_permissions',\@del_keys, $domain, $user);
10386: delete($current_permissions{$file});
10387: }
10388: }
10389: }
10390: &put('file_permissions',\%current_permissions,$domain,$user);
10391: return;
10392: }
10393:
10394: # ------------------------------------------------------------ Directory lister
10395:
10396: sub dirlist {
10397: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10398: $uri=~s/^\///;
10399: $uri=~s/\/$//;
10400: my ($udom, $uname);
10401: if ($getuserdir) {
10402: $udom = $userdomain;
10403: $uname = $username;
10404: } else {
10405: (undef,$udom,$uname)=split(/\//,$uri);
10406: if(defined($userdomain)) {
10407: $udom = $userdomain;
10408: }
10409: if(defined($username)) {
10410: $uname = $username;
10411: }
10412: }
10413: my ($dirRoot,$listing,@listing_results);
10414:
10415: $dirRoot = $perlvar{'lonDocRoot'};
10416: if (defined($getpropath)) {
10417: $dirRoot = &propath($udom,$uname);
10418: $dirRoot =~ s/\/$//;
10419: } elsif (defined($getuserdir)) {
10420: my $subdir=$uname.'__';
10421: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10422: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10423: ."/$udom/$subdir/$uname";
10424: } elsif (defined($alternateRoot)) {
10425: $dirRoot = $alternateRoot;
10426: }
10427:
10428: if($udom) {
10429: if($uname) {
10430: my $uhome = &homeserver($uname,$udom);
10431: if ($uhome eq 'no_host') {
10432: return ([],'no_host');
10433: }
10434: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10435: .$getuserdir.':'.&escape($dirRoot)
10436: .':'.&escape($uname).':'.&escape($udom),$uhome);
10437: if ($listing eq 'unknown_cmd') {
10438: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10439: } else {
10440: @listing_results = map { &unescape($_); } split(/:/,$listing);
10441: }
10442: if ($listing eq 'unknown_cmd') {
10443: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10444: @listing_results = split(/:/,$listing);
10445: } else {
10446: @listing_results = map { &unescape($_); } split(/:/,$listing);
10447: }
10448: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10449: ($listing eq 'rejected') || ($listing eq 'refused') ||
10450: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10451: return ([],$listing);
10452: } else {
10453: return (\@listing_results);
10454: }
10455: } elsif(!$alternateRoot) {
10456: my (%allusers,%listerror);
10457: my %servers = &get_servers($udom,'library');
10458: foreach my $tryserver (keys(%servers)) {
10459: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10460: &escape($udom),$tryserver);
10461: if ($listing eq 'unknown_cmd') {
10462: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10463: $udom, $tryserver);
10464: } else {
10465: @listing_results = map { &unescape($_); } split(/:/,$listing);
10466: }
10467: if ($listing eq 'unknown_cmd') {
10468: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10469: $udom, $tryserver);
10470: @listing_results = split(/:/,$listing);
10471: } else {
10472: @listing_results =
10473: map { &unescape($_); } split(/:/,$listing);
10474: }
10475: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10476: ($listing eq 'rejected') || ($listing eq 'refused') ||
10477: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10478: $listerror{$tryserver} = $listing;
10479: } else {
10480: foreach my $line (@listing_results) {
10481: my ($entry) = split(/&/,$line,2);
10482: $allusers{$entry} = 1;
10483: }
10484: }
10485: }
10486: my @alluserslist=();
10487: foreach my $user (sort(keys(%allusers))) {
10488: push(@alluserslist,$user.'&user');
10489: }
10490:
10491: if (!%listerror) {
10492: # no errors
10493: return (\@alluserslist);
10494: } elsif (scalar(keys(%servers)) == 1) {
10495: # one library server, one error
10496: my ($key) = keys(%listerror);
10497: return (\@alluserslist, $listerror{$key});
10498: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10499: # con_lost indicates that we might miss data from at least one
10500: # library server
10501: return (\@alluserslist, 'con_lost');
10502: } else {
10503: # multiple library servers and no con_lost -> data should be
10504: # complete.
10505: return (\@alluserslist);
10506: }
10507:
10508: } else {
10509: return ([],'missing username');
10510: }
10511: } elsif(!defined($getpropath)) {
10512: my $path = $perlvar{'lonDocRoot'}.'/res/';
10513: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10514: return (\@all_domains);
10515: } else {
10516: return ([],'missing domain');
10517: }
10518: }
10519:
10520: # --------------------------------------------- GetFileTimestamp
10521: # This function utilizes dirlist and returns the date stamp for
10522: # when it was last modified. It will also return an error of -1
10523: # if an error occurs
10524:
10525: sub GetFileTimestamp {
10526: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10527: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10528: $studentName = &LONCAPA::clean_username($studentName);
10529: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10530: undef,$getuserdir);
10531: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10532: return -1;
10533: }
10534: if (ref($fileref) eq 'ARRAY') {
10535: my @stats = split('&',$fileref->[0]);
10536: # @stats contains first the filename, then the stat output
10537: return $stats[10]; # so this is 10 instead of 9.
10538: } else {
10539: return -1;
10540: }
10541: }
10542:
10543: sub stat_file {
10544: my ($uri) = @_;
10545: $uri = &clutter_with_no_wrapper($uri);
10546:
10547: my ($udom,$uname,$file);
10548: if ($uri =~ m-^/(uploaded|editupload)/-) {
10549: ($udom,$uname,$file) =
10550: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10551: $file = 'userfiles/'.$file;
10552: }
10553: if ($uri =~ m-^/res/-) {
10554: ($udom,$uname) =
10555: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10556: $file = $uri;
10557: }
10558:
10559: if (!$udom || !$uname || !$file) {
10560: # unable to handle the uri
10561: return ();
10562: }
10563: my $getpropath;
10564: if ($file =~ /^userfiles\//) {
10565: $getpropath = 1;
10566: }
10567: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10568: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10569: return ();
10570: } else {
10571: if (ref($listref) eq 'ARRAY') {
10572: my @stats = split('&',$listref->[0]);
10573: shift(@stats); #filename is first
10574: return @stats;
10575: }
10576: }
10577: return ();
10578: }
10579:
10580: # --------------------------------------------------------- recursedirs
10581: # Recursive function to traverse either a specific user's Authoring Space
10582: # or corresponding Published Resource Space, and populate the hash ref:
10583: # $dirhashref with URLs of all directories, and if $filehashref hash
10584: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
10585: # or .rights files in resource space, and .meta, .save, .log, and .bak
10586: # files in Authoring Space.
10587: #
10588: # Inputs:
10589: #
10590: # $is_home - true if current server is home server for user's space
10591: # $context - either: priv, or res respectively for Authoring or Resource Space.
10592: # $docroot - Document root (i.e., /home/httpd/html
10593: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
10594: # $relpath - Current path (relative to top level).
10595: # $dirhashref - reference to hash to populate with URLs of directories (Required)
10596: # $filehashref - reference to hash to populate with URLs of files (Optional)
10597: #
10598: # Returns: nothing
10599: #
10600: # Side Effects: populates $dirhashref, and $filehashref (if provided).
10601: #
10602: # Currently used by interface/londocs.pm to create linked select boxes for
10603: # directory and filename to import a Course "Author" resource into a course, and
10604: # also to create linked select boxes for Authoring Space and Directory to choose
10605: # save location for creation of a new "standard" problem from the Course Editor.
10606: #
10607:
10608: sub recursedirs {
10609: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
10610: return unless (ref($dirhashref) eq 'HASH');
10611: my $currpath = $docroot.$toppath;
10612: if ($relpath) {
10613: $currpath .= "/$relpath";
10614: }
10615: my $savefile;
10616: if (ref($filehashref)) {
10617: $savefile = 1;
10618: }
10619: if ($is_home) {
10620: if (opendir(my $dirh,$currpath)) {
10621: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
10622: next if ($item eq '');
10623: if (-d "$currpath/$item") {
10624: my $newpath;
10625: if ($relpath) {
10626: $newpath = "$relpath/$item";
10627: } else {
10628: $newpath = $item;
10629: }
10630: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10631: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10632: } elsif ($savefile) {
10633: if ($context eq 'priv') {
10634: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10635: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10636: }
10637: } else {
10638: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
10639: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10640: }
10641: }
10642: }
10643: }
10644: closedir($dirh);
10645: }
10646: } else {
10647: my ($dirlistref,$listerror) =
10648: &dirlist($toppath.$relpath);
10649: my @dir_lines;
10650: my $dirptr=16384;
10651: if (ref($dirlistref) eq 'ARRAY') {
10652: foreach my $dir_line (sort
10653: {
10654: my ($afile)=split('&',$a,2);
10655: my ($bfile)=split('&',$b,2);
10656: return (lc($afile) cmp lc($bfile));
10657: } (@{$dirlistref})) {
10658: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
10659: split(/\&/,$dir_line,16);
10660: $item =~ s/\s+$//;
10661: next if (($item =~ /^\.\.?$/) || ($obs));
10662: if ($dirptr&$testdir) {
10663: my $newpath;
10664: if ($relpath) {
10665: $newpath = "$relpath/$item";
10666: } else {
10667: $relpath = '/';
10668: $newpath = $item;
10669: }
10670: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10671: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10672: } elsif ($savefile) {
10673: if ($context eq 'priv') {
10674: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10675: $filehashref->{$relpath}{$item} = 1;
10676: }
10677: } else {
10678: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
10679: $filehashref->{$relpath}{$item} = 1;
10680: }
10681: }
10682: }
10683: }
10684: }
10685: }
10686: return;
10687: }
10688:
10689: # -------------------------------------------------------- Value of a Condition
10690:
10691: # gets the value of a specific preevaluated condition
10692: # stored in the string $env{user.state.<cid>}
10693: # or looks up a condition reference in the bighash and if if hasn't
10694: # already been evaluated recurses into docondval to get the value of
10695: # the condition, then memoizing it to
10696: # $env{user.state.<cid>.<condition>}
10697: sub directcondval {
10698: my $number=shift;
10699: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10700: &Apache::lonuserstate::evalstate();
10701: }
10702: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10703: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10704: } elsif ($number =~ /^_/) {
10705: my $sub_condition;
10706: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10707: &GDBM_READER(),0640)) {
10708: $sub_condition=$bighash{'conditions'.$number};
10709: untie(%bighash);
10710: }
10711: my $value = &docondval($sub_condition);
10712: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10713: return $value;
10714: }
10715: if ($env{'user.state.'.$env{'request.course.id'}}) {
10716: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10717: } else {
10718: return 2;
10719: }
10720: }
10721:
10722: # get the collection of conditions for this resource
10723: sub condval {
10724: my $condidx=shift;
10725: my $allpathcond='';
10726: foreach my $cond (split(/\|/,$condidx)) {
10727: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10728: $allpathcond.=
10729: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10730: }
10731: }
10732: $allpathcond=~s/\|$//;
10733: return &docondval($allpathcond);
10734: }
10735:
10736: #evaluates an expression of conditions
10737: sub docondval {
10738: my ($allpathcond) = @_;
10739: my $result=0;
10740: if ($env{'request.course.id'}
10741: && defined($allpathcond)) {
10742: my $operand='|';
10743: my @stack;
10744: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10745: if ($chunk eq '(') {
10746: push @stack,($operand,$result);
10747: } elsif ($chunk eq ')') {
10748: my $before=pop @stack;
10749: if (pop @stack eq '&') {
10750: $result=$result>$before?$before:$result;
10751: } else {
10752: $result=$result>$before?$result:$before;
10753: }
10754: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10755: $operand=$chunk;
10756: } else {
10757: my $new=directcondval($chunk);
10758: if ($operand eq '&') {
10759: $result=$result>$new?$new:$result;
10760: } else {
10761: $result=$result>$new?$result:$new;
10762: }
10763: }
10764: }
10765: }
10766: return $result;
10767: }
10768:
10769: # ---------------------------------------------------- Devalidate courseresdata
10770:
10771: sub devalidatecourseresdata {
10772: my ($coursenum,$coursedomain)=@_;
10773: my $hashid=$coursenum.':'.$coursedomain;
10774: &devalidate_cache_new('courseres',$hashid);
10775: }
10776:
10777:
10778: # --------------------------------------------------- Course Resourcedata Query
10779: #
10780: # Parameters:
10781: # $coursenum - Number of the course.
10782: # $coursedomain - Domain at which the course was created.
10783: # Returns:
10784: # A hash of the course parameters along (I think) with timestamps
10785: # and version info.
10786:
10787: sub get_courseresdata {
10788: my ($coursenum,$coursedomain)=@_;
10789: my $coursehom=&homeserver($coursenum,$coursedomain);
10790: my $hashid=$coursenum.':'.$coursedomain;
10791: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10792: my %dumpreply;
10793: unless (defined($cached)) {
10794: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10795: $result=\%dumpreply;
10796: my ($tmp) = keys(%dumpreply);
10797: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10798: &do_cache_new('courseres',$hashid,$result,600);
10799: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10800: return $tmp;
10801: } elsif ($tmp =~ /^(error)/) {
10802: $result=undef;
10803: &do_cache_new('courseres',$hashid,$result,600);
10804: }
10805: }
10806: return $result;
10807: }
10808:
10809: sub devalidateuserresdata {
10810: my ($uname,$udom)=@_;
10811: my $hashid="$udom:$uname";
10812: &devalidate_cache_new('userres',$hashid);
10813: }
10814:
10815: sub get_userresdata {
10816: my ($uname,$udom)=@_;
10817: #most student don\'t have any data set, check if there is some data
10818: if (&EXT_cache_status($udom,$uname)) { return undef; }
10819:
10820: my $hashid="$udom:$uname";
10821: my ($result,$cached)=&is_cached_new('userres',$hashid);
10822: if (!defined($cached)) {
10823: my %resourcedata=&dump('resourcedata',$udom,$uname);
10824: $result=\%resourcedata;
10825: &do_cache_new('userres',$hashid,$result,600);
10826: }
10827: my ($tmp)=keys(%$result);
10828: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10829: return $result;
10830: }
10831: #error 2 occurs when the .db doesn't exist
10832: if ($tmp!~/error: 2 /) {
10833: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
10834: &logthis("<font color=\"blue\">WARNING:".
10835: " Trying to get resource data for ".
10836: $uname." at ".$udom.": ".
10837: $tmp."</font>");
10838: }
10839: } elsif ($tmp=~/error: 2 /) {
10840: #&EXT_cache_set($udom,$uname);
10841: &do_cache_new('userres',$hashid,undef,600);
10842: undef($tmp); # not really an error so don't send it back
10843: }
10844: return $tmp;
10845: }
10846: #----------------------------------------------- resdata - return resource data
10847: # Purpose:
10848: # Return resource data for either users or for a course.
10849: # Parameters:
10850: # $name - Course/user name.
10851: # $domain - Name of the domain the user/course is registered on.
10852: # $type - Type of thing $name is (must be 'course' or 'user')
10853: # $mapp - decluttered URL of enclosing map
10854: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
10855: # $recurseup - Ref to array of map URLs, starting with map containing
10856: # $mapp up through hierarchy of nested maps to top level map.
10857: # $courseid - CourseID (first part of param identifier).
10858: # $modifier - Middle part of param identifier.
10859: # $what - Last part of param identifier.
10860: # @which - Array of names of resources desired.
10861: # Returns:
10862: # The value of the first reasource in @which that is found in the
10863: # resource hash.
10864: # Exceptional Conditions:
10865: # If the $type passed in is not valid (not the string 'course' or
10866: # 'user', an undefined reference is returned.
10867: # If none of the resources are found, an undef is returned
10868: sub resdata {
10869: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
10870: $modifier,$what,@which)=@_;
10871: my $result;
10872: if ($type eq 'course') {
10873: $result=&get_courseresdata($name,$domain);
10874: } elsif ($type eq 'user') {
10875: $result=&get_userresdata($name,$domain);
10876: }
10877: if (!ref($result)) { return $result; }
10878: foreach my $item (@which) {
10879: if ($item->[1] eq 'course') {
10880: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
10881: unless ($$recursed) {
10882: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
10883: $$recursed = 1;
10884: }
10885: foreach my $item (@${recurseup}) {
10886: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
10887: last if (defined($result->{$norecursechk}));
10888: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
10889: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
10890: }
10891: }
10892: }
10893: if (defined($result->{$item->[0]})) {
10894: return [$result->{$item->[0]},$item->[1]];
10895: }
10896: }
10897: return undef;
10898: }
10899:
10900: sub get_domain_ltitools {
10901: my ($cdom) = @_;
10902: my %ltitools;
10903: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
10904: if (defined($cached)) {
10905: if (ref($result) eq 'HASH') {
10906: %ltitools = %{$result};
10907: }
10908: } else {
10909: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
10910: if (ref($domconfig{'ltitools'}) eq 'HASH') {
10911: %ltitools = %{$domconfig{'ltitools'}};
10912: }
10913: my $cachetime = 24*60*60;
10914: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
10915: }
10916: return %ltitools;
10917: }
10918:
10919: sub get_numsuppfiles {
10920: my ($cnum,$cdom,$ignorecache)=@_;
10921: my $hashid=$cnum.':'.$cdom;
10922: my ($suppcount,$cached);
10923: unless ($ignorecache) {
10924: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
10925: }
10926: unless (defined($cached)) {
10927: my $chome=&homeserver($cnum,$cdom);
10928: unless ($chome eq 'no_host') {
10929: ($suppcount,my $errors) = (0,0);
10930: my $suppmap = 'supplemental.sequence';
10931: ($suppcount,$errors) =
10932: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
10933: }
10934: &do_cache_new('suppcount',$hashid,$suppcount,600);
10935: }
10936: return $suppcount;
10937: }
10938:
10939: #
10940: # EXT resource caching routines
10941: #
10942:
10943: {
10944: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
10945: #
10946: # The course for which we cache
10947: my $cachedmapkey='';
10948: # The cached recursive maps for this course
10949: my %cachedmaps=();
10950: # When this was last done
10951: my $cachedmaptime='';
10952:
10953: sub clear_EXT_cache_status {
10954: &delenv('cache.EXT.');
10955: }
10956:
10957: sub EXT_cache_status {
10958: my ($target_domain,$target_user) = @_;
10959: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10960: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10961: # We know already the user has no data
10962: return 1;
10963: } else {
10964: return 0;
10965: }
10966: }
10967:
10968: sub EXT_cache_set {
10969: my ($target_domain,$target_user) = @_;
10970: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10971: #&appenv({$cachename => time});
10972: }
10973:
10974: # --------------------------------------------------------- Value of a Variable
10975: sub EXT {
10976:
10977: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10978: unless ($varname) { return ''; }
10979: #get real user name/domain, courseid and symb
10980: my $courseid;
10981: my $publicuser;
10982: if ($symbparm) {
10983: $symbparm=&get_symb_from_alias($symbparm);
10984: }
10985: if (!($uname && $udom)) {
10986: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10987: if (!$symbparm) { $symbparm=$cursymb; }
10988: } else {
10989: $courseid=$env{'request.course.id'};
10990: }
10991: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10992: my $rest;
10993: if (defined($therest[0])) {
10994: $rest=join('.',@therest);
10995: } else {
10996: $rest='';
10997: }
10998:
10999: my $qualifierrest=$qualifier;
11000: if ($rest) { $qualifierrest.='.'.$rest; }
11001: my $spacequalifierrest=$space;
11002: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11003: if ($realm eq 'user') {
11004: # --------------------------------------------------------------- user.resource
11005: if ($space eq 'resource') {
11006: if ( (defined($Apache::lonhomework::parsing_a_problem)
11007: || defined($Apache::lonhomework::parsing_a_task))
11008: &&
11009: ($symbparm eq &symbread()) ) {
11010: # if we are in the middle of processing the resource the
11011: # get the value we are planning on committing
11012: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11013: return $Apache::lonhomework::results{$qualifierrest};
11014: } else {
11015: return $Apache::lonhomework::history{$qualifierrest};
11016: }
11017: } else {
11018: my %restored;
11019: if ($publicuser || $env{'request.state'} eq 'construct') {
11020: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11021: } else {
11022: %restored=&restore($symbparm,$courseid,$udom,$uname);
11023: }
11024: return $restored{$qualifierrest};
11025: }
11026: # ----------------------------------------------------------------- user.access
11027: } elsif ($space eq 'access') {
11028: # FIXME - not supporting calls for a specific user
11029: return &allowed($qualifier,$rest);
11030: # ------------------------------------------ user.preferences, user.environment
11031: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11032: if (($uname eq $env{'user.name'}) &&
11033: ($udom eq $env{'user.domain'})) {
11034: return $env{join('.',('environment',$qualifierrest))};
11035: } else {
11036: my %returnhash;
11037: if (!$publicuser) {
11038: %returnhash=&userenvironment($udom,$uname,
11039: $qualifierrest);
11040: }
11041: return $returnhash{$qualifierrest};
11042: }
11043: # ----------------------------------------------------------------- user.course
11044: } elsif ($space eq 'course') {
11045: # FIXME - not supporting calls for a specific user
11046: return $env{join('.',('request.course',$qualifier))};
11047: # ------------------------------------------------------------------- user.role
11048: } elsif ($space eq 'role') {
11049: # FIXME - not supporting calls for a specific user
11050: my ($role,$where)=split(/\./,$env{'request.role'});
11051: if ($qualifier eq 'value') {
11052: return $role;
11053: } elsif ($qualifier eq 'extent') {
11054: return $where;
11055: }
11056: # ----------------------------------------------------------------- user.domain
11057: } elsif ($space eq 'domain') {
11058: return $udom;
11059: # ------------------------------------------------------------------- user.name
11060: } elsif ($space eq 'name') {
11061: return $uname;
11062: # ---------------------------------------------------- Any other user namespace
11063: } else {
11064: my %reply;
11065: if (!$publicuser) {
11066: %reply=&get($space,[$qualifierrest],$udom,$uname);
11067: }
11068: return $reply{$qualifierrest};
11069: }
11070: } elsif ($realm eq 'query') {
11071: # ---------------------------------------------- pull stuff out of query string
11072: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11073: [$spacequalifierrest]);
11074: return $env{'form.'.$spacequalifierrest};
11075: } elsif ($realm eq 'request') {
11076: # ------------------------------------------------------------- request.browser
11077: if ($space eq 'browser') {
11078: return $env{'browser.'.$qualifier};
11079: # ------------------------------------------------------------ request.filename
11080: } else {
11081: return $env{'request.'.$spacequalifierrest};
11082: }
11083: } elsif ($realm eq 'course') {
11084: # ---------------------------------------------------------- course.description
11085: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11086: } elsif ($realm eq 'resource') {
11087:
11088: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11089: if (!$symbparm) { $symbparm=&symbread(); }
11090: }
11091:
11092: if ($qualifier eq '') {
11093: if ($space eq 'title') {
11094: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11095: return &gettitle($symbparm);
11096: }
11097:
11098: if ($space eq 'map') {
11099: my ($map) = &decode_symb($symbparm);
11100: return &symbread($map);
11101: }
11102: if ($space eq 'maptitle') {
11103: my ($map) = &decode_symb($symbparm);
11104: return &gettitle($map);
11105: }
11106: if ($space eq 'filename') {
11107: if ($symbparm) {
11108: return &clutter((&decode_symb($symbparm))[2]);
11109: }
11110: return &hreflocation('',$env{'request.filename'});
11111: }
11112:
11113: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11114: if ($space eq 'visibleparts') {
11115: my $navmap = Apache::lonnavmaps::navmap->new();
11116: my $item;
11117: if (ref($navmap)) {
11118: my $res = $navmap->getBySymb($symbparm);
11119: my $parts = $res->parts();
11120: if (ref($parts) eq 'ARRAY') {
11121: $item = join(',',@{$parts});
11122: }
11123: undef($navmap);
11124: }
11125: return $item;
11126: }
11127: }
11128: }
11129:
11130: my ($section, $group, @groups, @recurseup, $recursed);
11131: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11132: if (($courseid eq '') && ($cid)) {
11133: $courseid = $cid;
11134: }
11135: if (($symbparm && $courseid) &&
11136: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11137:
11138: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11139:
11140: # ----------------------------------------------------- Cascading lookup scheme
11141: my $symbp=$symbparm;
11142: $mapp=&deversion((&decode_symb($symbp))[0]);
11143: my $symbparm=$symbp.'.'.$spacequalifierrest;
11144: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11145: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11146: if (($env{'user.name'} eq $uname) &&
11147: ($env{'user.domain'} eq $udom)) {
11148: $section=$env{'request.course.sec'};
11149: @groups = split(/:/,$env{'request.course.groups'});
11150: @groups=&sort_course_groups($courseid,@groups);
11151: } else {
11152: if (! defined($usection)) {
11153: $section=&getsection($udom,$uname,$courseid);
11154: } else {
11155: $section = $usection;
11156: }
11157: @groups = &get_users_groups($udom,$uname,$courseid);
11158: }
11159:
11160: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11161: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11162: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11163: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11164:
11165: $courselevel=$courseid.'.'.$spacequalifierrest;
11166: my $courselevelr=$courseid.'.'.$symbparm;
11167: $courseleveli=$courseid.'.'.$recurseparm;
11168: $courselevelm=$courseid.'.'.$mapparm;
11169:
11170: # ----------------------------------------------------------- first, check user
11171:
11172: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11173: \@recurseup,$courseid,'.',$spacequalifierrest,
11174: ([$courselevelr,'resource'],
11175: [$courselevelm,'map' ],
11176: [$courseleveli,'map' ],
11177: [$courselevel, 'course' ]));
11178: if (defined($userreply)) { return &get_reply($userreply); }
11179:
11180: # ------------------------------------------------ second, check some of course
11181: my $coursereply;
11182: if (@groups > 0) {
11183: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11184: $recurseparm,$mapparm,$spacequalifierrest,
11185: $mapp,\$recursed,\@recurseup);
11186: if (defined($coursereply)) { return &get_reply($coursereply); }
11187: }
11188:
11189: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11190: $env{'course.'.$courseid.'.domain'},
11191: 'course',$mapp,\$recursed,\@recurseup,
11192: $courseid,'.['.$section.'].',$spacequalifierrest,
11193: ([$seclevelr, 'resource'],
11194: [$seclevelm, 'map' ],
11195: [$secleveli, 'map' ],
11196: [$seclevel, 'course' ],
11197: [$courselevelr,'resource']));
11198: if (defined($coursereply)) { return &get_reply($coursereply); }
11199:
11200: # ------------------------------------------------------ third, check map parms
11201: my %parmhash=();
11202: my $thisparm='';
11203: if (tie(%parmhash,'GDBM_File',
11204: $env{'request.course.fn'}.'_parms.db',
11205: &GDBM_READER(),0640)) {
11206: $thisparm=$parmhash{$symbparm};
11207: untie(%parmhash);
11208: }
11209: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11210: }
11211: # ------------------------------------------ fourth, look in resource metadata
11212:
11213: my $what = $spacequalifierrest;
11214: $what=~s/\./\_/;
11215: my $filename;
11216: if (!$symbparm) { $symbparm=&symbread(); }
11217: if ($symbparm) {
11218: $filename=(&decode_symb($symbparm))[2];
11219: } else {
11220: $filename=$env{'request.filename'};
11221: }
11222: my $metadata=&metadata($filename,$what);
11223: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11224: $metadata=&metadata($filename,'parameter_'.$what);
11225: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11226:
11227: # ----------------------------------------------- fifth, look in rest of course
11228: if ($symbparm && defined($courseid) &&
11229: $courseid eq $env{'request.course.id'}) {
11230: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11231: $env{'course.'.$courseid.'.domain'},
11232: 'course',$mapp,\$recursed,\@recurseup,
11233: $courseid,'.',$spacequalifierrest,
11234: ([$courselevelm,'map' ],
11235: [$courseleveli,'map' ],
11236: [$courselevel, 'course']));
11237: if (defined($coursereply)) { return &get_reply($coursereply); }
11238: }
11239: # ------------------------------------------------------------------ Cascade up
11240: unless ($space eq '0') {
11241: my @parts=split(/_/,$space);
11242: my $id=pop(@parts);
11243: my $part=join('_',@parts);
11244: if ($part eq '') { $part='0'; }
11245: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11246: $symbparm,$udom,$uname,$section,1);
11247: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11248: }
11249: if ($recurse) { return undef; }
11250: my $pack_def=&packages_tab_default($filename,$varname);
11251: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11252: # ---------------------------------------------------- Any other user namespace
11253: } elsif ($realm eq 'environment') {
11254: # ----------------------------------------------------------------- environment
11255: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11256: return $env{'environment.'.$spacequalifierrest};
11257: } else {
11258: if ($uname eq 'anonymous' && $udom eq '') {
11259: return '';
11260: }
11261: my %returnhash=&userenvironment($udom,$uname,
11262: $spacequalifierrest);
11263: return $returnhash{$spacequalifierrest};
11264: }
11265: } elsif ($realm eq 'system') {
11266: # ----------------------------------------------------------------- system.time
11267: if ($space eq 'time') {
11268: return time;
11269: }
11270: } elsif ($realm eq 'server') {
11271: # ----------------------------------------------------------------- system.time
11272: if ($space eq 'name') {
11273: return $ENV{'SERVER_NAME'};
11274: }
11275: }
11276: return '';
11277: }
11278:
11279: sub get_reply {
11280: my ($reply_value) = @_;
11281: if (ref($reply_value) eq 'ARRAY') {
11282: if (wantarray) {
11283: return @$reply_value;
11284: }
11285: return $reply_value->[0];
11286: } else {
11287: return $reply_value;
11288: }
11289: }
11290:
11291: sub check_group_parms {
11292: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11293: $recursed,$recurseupref) = @_;
11294: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11295: [$what,'course']);
11296: my $coursereply;
11297: foreach my $group (@{$groups}) {
11298: my @groupitems = ();
11299: foreach my $level (@levels) {
11300: my $item = $courseid.'.['.$group.'].'.$level->[0];
11301: push(@groupitems,[$item,$level->[1]]);
11302: }
11303: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11304: $env{'course.'.$courseid.'.domain'},
11305: 'course',$mapp,$recursed,$recurseupref,
11306: $courseid,'.['.$group.'].',$what,
11307: @groupitems);
11308: last if (defined($coursereply));
11309: }
11310: return $coursereply;
11311: }
11312:
11313: sub get_map_hierarchy {
11314: my ($mapname,$courseid) = @_;
11315: my @recurseup = ();
11316: if ($mapname) {
11317: if (($cachedmapkey eq $courseid) &&
11318: (abs($cachedmaptime-time)<5)) {
11319: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11320: return @{$cachedmaps{$mapname}};
11321: }
11322: }
11323: my $navmap = Apache::lonnavmaps::navmap->new();
11324: if (ref($navmap)) {
11325: @recurseup = $navmap->recurseup_maps($mapname);
11326: undef($navmap);
11327: $cachedmaps{$mapname} = \@recurseup;
11328: $cachedmaptime=time;
11329: $cachedmapkey=$courseid;
11330: }
11331: }
11332: return @recurseup;
11333: }
11334:
11335: }
11336:
11337: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11338: my ($courseid,@groups) = @_;
11339: @groups = sort(@groups);
11340: return @groups;
11341: }
11342:
11343: sub packages_tab_default {
11344: my ($uri,$varname)=@_;
11345: my (undef,$part,$name)=split(/\./,$varname);
11346:
11347: my (@extension,@specifics,$do_default);
11348: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
11349: my ($pack_type,$pack_part)=split(/_/,$package,2);
11350: if ($pack_type eq 'default') {
11351: $do_default=1;
11352: } elsif ($pack_type eq 'extension') {
11353: push(@extension,[$package,$pack_type,$pack_part]);
11354: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11355: # only look at packages defaults for packages that this id is
11356: push(@specifics,[$package,$pack_type,$pack_part]);
11357: }
11358: }
11359: # first look for a package that matches the requested part id
11360: foreach my $package (@specifics) {
11361: my (undef,$pack_type,$pack_part)=@{$package};
11362: next if ($pack_part ne $part);
11363: if (defined($packagetab{"$pack_type&$name&default"})) {
11364: return $packagetab{"$pack_type&$name&default"};
11365: }
11366: }
11367: # look for any possible matching non extension_ package
11368: foreach my $package (@specifics) {
11369: my (undef,$pack_type,$pack_part)=@{$package};
11370: if (defined($packagetab{"$pack_type&$name&default"})) {
11371: return $packagetab{"$pack_type&$name&default"};
11372: }
11373: if ($pack_type eq 'part') { $pack_part='0'; }
11374: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11375: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11376: }
11377: }
11378: # look for any posible extension_ match
11379: foreach my $package (@extension) {
11380: my ($package,$pack_type)=@{$package};
11381: if (defined($packagetab{"$pack_type&$name&default"})) {
11382: return $packagetab{"$pack_type&$name&default"};
11383: }
11384: if (defined($packagetab{$package."&$name&default"})) {
11385: return $packagetab{$package."&$name&default"};
11386: }
11387: }
11388: # look for a global default setting
11389: if ($do_default && defined($packagetab{"default&$name&default"})) {
11390: return $packagetab{"default&$name&default"};
11391: }
11392: return undef;
11393: }
11394:
11395: sub add_prefix_and_part {
11396: my ($prefix,$part)=@_;
11397: my $keyroot;
11398: if (defined($prefix) && $prefix !~ /^__/) {
11399: # prefix that has a part already
11400: $keyroot=$prefix;
11401: } elsif (defined($prefix)) {
11402: # prefix that is missing a part
11403: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11404: } else {
11405: # no prefix at all
11406: if (defined($part)) { $keyroot='_'.$part; }
11407: }
11408: return $keyroot;
11409: }
11410:
11411: # ---------------------------------------------------------------- Get metadata
11412:
11413: my %metaentry;
11414: my %importedpartids;
11415: sub metadata {
11416: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
11417: $uri=&declutter($uri);
11418: # if it is a non metadata possible uri return quickly
11419: if (($uri eq '') ||
11420: (($uri =~ m|^/*adm/|) &&
11421: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|exttools?)$})) ||
11422: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11423: return undef;
11424: }
11425: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11426: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11427: return undef;
11428: }
11429: my $filename=$uri;
11430: $uri=~s/\.meta$//;
11431: #
11432: # Is the metadata already cached?
11433: # Look at timestamp of caching
11434: # Everything is cached by the main uri, libraries are never directly cached
11435: #
11436: if (!defined($liburi)) {
11437: my ($result,$cached)=&is_cached_new('meta',$uri);
11438: if (defined($cached)) { return $result->{':'.$what}; }
11439: }
11440: {
11441: # Imported parts would go here
11442: my %importedids=();
11443: my @origfileimportpartids=();
11444: my $importedparts=0;
11445: #
11446: # Is this a recursive call for a library?
11447: #
11448: # if (! exists($metacache{$uri})) {
11449: # $metacache{$uri}={};
11450: # }
11451: my $cachetime = 60*60;
11452: if ($liburi) {
11453: $liburi=&declutter($liburi);
11454: $filename=$liburi;
11455: } else {
11456: &devalidate_cache_new('meta',$uri);
11457: undef(%metaentry);
11458: }
11459: my %metathesekeys=();
11460: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11461: my $metastring;
11462: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11463: my $which = &hreflocation('','/'.($liburi || $uri));
11464: $metastring =
11465: &Apache::lonnet::ssi_body($which,
11466: ('grade_target' => 'meta'));
11467: $cachetime = 1; # only want this cached in the child not long term
11468: } elsif (($uri !~ m -^(editupload)/-) &&
11469: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11470: my $file=&filelocation('',&clutter($filename));
11471: #push(@{$metaentry{$uri.'.file'}},$file);
11472: $metastring=&getfile($file);
11473: }
11474: my $parser=HTML::LCParser->new(\$metastring);
11475: my $token;
11476: undef %metathesekeys;
11477: while ($token=$parser->get_token) {
11478: if ($token->[0] eq 'S') {
11479: if (defined($token->[2]->{'package'})) {
11480: #
11481: # This is a package - get package info
11482: #
11483: my $package=$token->[2]->{'package'};
11484: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11485: if (defined($token->[2]->{'id'})) {
11486: $keyroot.='_'.$token->[2]->{'id'};
11487: }
11488: if ($metaentry{':packages'}) {
11489: $metaentry{':packages'}.=','.$package.$keyroot;
11490: } else {
11491: $metaentry{':packages'}=$package.$keyroot;
11492: }
11493: foreach my $pack_entry (keys(%packagetab)) {
11494: my $part=$keyroot;
11495: $part=~s/^\_//;
11496: if ($pack_entry=~/^\Q$package\E\&/ ||
11497: $pack_entry=~/^\Q$package\E_0\&/) {
11498: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11499: # ignore package.tab specified default values
11500: # here &package_tab_default() will fetch those
11501: if ($subp eq 'default') { next; }
11502: my $value=$packagetab{$pack_entry};
11503: my $unikey;
11504: if ($pack =~ /_0$/) {
11505: $unikey='parameter_0_'.$name;
11506: $part=0;
11507: } else {
11508: $unikey='parameter'.$keyroot.'_'.$name;
11509: }
11510: if ($subp eq 'display') {
11511: $value.=' [Part: '.$part.']';
11512: }
11513: $metaentry{':'.$unikey.'.part'}=$part;
11514: $metathesekeys{$unikey}=1;
11515: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11516: $metaentry{':'.$unikey.'.'.$subp}=$value;
11517: }
11518: if (defined($metaentry{':'.$unikey.'.default'})) {
11519: $metaentry{':'.$unikey}=
11520: $metaentry{':'.$unikey.'.default'};
11521: }
11522: }
11523: }
11524: } else {
11525: #
11526: # This is not a package - some other kind of start tag
11527: #
11528: my $entry=$token->[1];
11529: my $unikey='';
11530:
11531: if ($entry eq 'import') {
11532: #
11533: # Importing a library here
11534: #
11535: my $location=$parser->get_text('/import');
11536: my $dir=$filename;
11537: $dir=~s|[^/]*$||;
11538: $location=&filelocation($dir,$location);
11539:
11540: my $importmode=$token->[2]->{'importmode'};
11541: if ($importmode eq 'problem') {
11542: # Import as problem/response
11543: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11544: } elsif ($importmode eq 'part') {
11545: # Import as part(s)
11546: $importedparts=1;
11547: # We need to get the original file and the imported file to get the part order correct
11548: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
11549: # Load and inspect original file
11550: if ($#origfileimportpartids<0) {
11551: undef(%importedpartids);
11552: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11553: my $origfile=&getfile($origfilelocation);
11554: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11555: }
11556:
11557: # Load and inspect imported file
11558: my $impfile=&getfile($location);
11559: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11560: if ($#impfilepartids>=0) {
11561: # This problem had parts
11562: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11563: } else {
11564: # Importing by turning a single problem into a problem part
11565: # It gets the import-tags ID as part-ID
11566: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11567: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11568: }
11569: } else {
11570: # Normal import
11571: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11572: if (defined($token->[2]->{'id'})) {
11573: $unikey.='_'.$token->[2]->{'id'};
11574: }
11575: }
11576:
11577: if ($depthcount<20) {
11578: my $metadata =
11579: &metadata($uri,'keys', $location,$unikey,
11580: $depthcount+1);
11581: foreach my $meta (split(',',$metadata)) {
11582: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11583: $metathesekeys{$meta}=1;
11584: }
11585:
11586: }
11587: } else {
11588: #
11589: # Not importing, some other kind of non-package, non-library start tag
11590: #
11591: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11592: if (defined($token->[2]->{'id'})) {
11593: $unikey.='_'.$token->[2]->{'id'};
11594: }
11595: if (defined($token->[2]->{'name'})) {
11596: $unikey.='_'.$token->[2]->{'name'};
11597: }
11598: $metathesekeys{$unikey}=1;
11599: foreach my $param (@{$token->[3]}) {
11600: $metaentry{':'.$unikey.'.'.$param} =
11601: $token->[2]->{$param};
11602: }
11603: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11604: my $default=$metaentry{':'.$unikey.'.default'};
11605: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11606: # only ws inside the tag, and not in default, so use default
11607: # as value
11608: $metaentry{':'.$unikey}=$default;
11609: } elsif ( $internaltext =~ /\S/ ) {
11610: # something interesting inside the tag
11611: $metaentry{':'.$unikey}=$internaltext;
11612: } else {
11613: # no interesting values, don't set a default
11614: }
11615: # end of not-a-package not-a-library import
11616: }
11617: # end of not-a-package start tag
11618: }
11619: # the next is the end of "start tag"
11620: }
11621: }
11622: my ($extension) = ($uri =~ /\.(\w+)$/);
11623: $extension = lc($extension);
11624: if ($extension eq 'htm') { $extension='html'; }
11625:
11626: foreach my $key (keys(%packagetab)) {
11627: #no specific packages #how's our extension
11628: if ($key!~/^extension_\Q$extension\E&/) { next; }
11629: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11630: \%metathesekeys);
11631: }
11632:
11633: if (!exists($metaentry{':packages'})
11634: || $packagetab{"import_defaults&extension_$extension"}) {
11635: foreach my $key (keys(%packagetab)) {
11636: #no specific packages well let's get default then
11637: if ($key!~/^default&/) { next; }
11638: &metadata_create_package_def($uri,$key,'default',
11639: \%metathesekeys);
11640: }
11641: }
11642: # are there custom rights to evaluate
11643: if ($metaentry{':copyright'} eq 'custom') {
11644:
11645: #
11646: # Importing a rights file here
11647: #
11648: unless ($depthcount) {
11649: my $location=$metaentry{':customdistributionfile'};
11650: my $dir=$filename;
11651: $dir=~s|[^/]*$||;
11652: $location=&filelocation($dir,$location);
11653: my $rights_metadata =
11654: &metadata($uri,'keys',$location,'_rights',
11655: $depthcount+1);
11656: foreach my $rights (split(',',$rights_metadata)) {
11657: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11658: $metathesekeys{$rights}=1;
11659: }
11660: }
11661: }
11662: # uniqifiy package listing
11663: my %seen;
11664: my @uniq_packages =
11665: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11666: $metaentry{':packages'} = join(',',@uniq_packages);
11667:
11668: if ($importedparts) {
11669: # We had imported parts and need to rebuild partorder
11670: $metaentry{':partorder'}='';
11671: $metathesekeys{'partorder'}=1;
11672: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
11673: if ($origfileimportpartids[$index] eq 'part') {
11674: # original part, part of the problem
11675: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
11676: } else {
11677: # we have imported parts at this position
11678: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
11679: }
11680: }
11681: $metaentry{':partorder'}=~s/^\,//;
11682: }
11683:
11684: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11685: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11686: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11687: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11688: # this is the end of "was not already recently cached
11689: }
11690: return $metaentry{':'.$what};
11691: }
11692:
11693: sub metadata_create_package_def {
11694: my ($uri,$key,$package,$metathesekeys)=@_;
11695: my ($pack,$name,$subp)=split(/\&/,$key);
11696: if ($subp eq 'default') { next; }
11697:
11698: if (defined($metaentry{':packages'})) {
11699: $metaentry{':packages'}.=','.$package;
11700: } else {
11701: $metaentry{':packages'}=$package;
11702: }
11703: my $value=$packagetab{$key};
11704: my $unikey;
11705: $unikey='parameter_0_'.$name;
11706: $metaentry{':'.$unikey.'.part'}=0;
11707: $$metathesekeys{$unikey}=1;
11708: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11709: $metaentry{':'.$unikey.'.'.$subp}=$value;
11710: }
11711: if (defined($metaentry{':'.$unikey.'.default'})) {
11712: $metaentry{':'.$unikey}=
11713: $metaentry{':'.$unikey.'.default'};
11714: }
11715: }
11716:
11717: sub metadata_generate_part0 {
11718: my ($metadata,$metacache,$uri) = @_;
11719: my %allnames;
11720: foreach my $metakey (keys(%$metadata)) {
11721: if ($metakey=~/^parameter\_(.*)/) {
11722: my $part=$$metacache{':'.$metakey.'.part'};
11723: my $name=$$metacache{':'.$metakey.'.name'};
11724: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11725: $allnames{$name}=$part;
11726: }
11727: }
11728: }
11729: foreach my $name (keys(%allnames)) {
11730: $$metadata{"parameter_0_$name"}=1;
11731: my $key=":parameter_0_$name";
11732: $$metacache{"$key.part"}='0';
11733: $$metacache{"$key.name"}=$name;
11734: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11735: $allnames{$name}.'_'.$name.
11736: '.type'};
11737: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
11738: '.display'};
11739: my $expr='[Part: '.$allnames{$name}.']';
11740: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
11741: $$metacache{"$key.display"}=$olddis;
11742: }
11743: }
11744:
11745: # ------------------------------------------------------ Devalidate title cache
11746:
11747: sub devalidate_title_cache {
11748: my ($url)=@_;
11749: if (!$env{'request.course.id'}) { return; }
11750: my $symb=&symbread($url);
11751: if (!$symb) { return; }
11752: my $key=$env{'request.course.id'}."\0".$symb;
11753: &devalidate_cache_new('title',$key);
11754: }
11755:
11756: # ------------------------------------------------- Get the title of a course
11757:
11758: sub current_course_title {
11759: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11760: }
11761: # ------------------------------------------------- Get the title of a resource
11762:
11763: sub gettitle {
11764: my $urlsymb=shift;
11765: my $symb=&symbread($urlsymb);
11766: if ($symb) {
11767: my $key=$env{'request.course.id'}."\0".$symb;
11768: my ($result,$cached)=&is_cached_new('title',$key);
11769: if (defined($cached)) {
11770: return $result;
11771: }
11772: my ($map,$resid,$url)=&decode_symb($symb);
11773: my $title='';
11774: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11775: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11776: } else {
11777: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11778: &GDBM_READER(),0640)) {
11779: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11780: $title=$bighash{'title_'.$mapid.'.'.$resid};
11781: untie(%bighash);
11782: }
11783: }
11784: $title=~s/\&colon\;/\:/gs;
11785: if ($title) {
11786: # Remember both $symb and $title for dynamic metadata
11787: $accesshash{$symb.'___crstitle'}=$title;
11788: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11789: # Cache this title and then return it
11790: return &do_cache_new('title',$key,$title,600);
11791: }
11792: $urlsymb=$url;
11793: }
11794: my $title=&metadata($urlsymb,'title');
11795: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11796: return $title;
11797: }
11798:
11799: sub get_slot {
11800: my ($which,$cnum,$cdom)=@_;
11801: if (!$cnum || !$cdom) {
11802: (undef,my $courseid)=&whichuser();
11803: $cdom=$env{'course.'.$courseid.'.domain'};
11804: $cnum=$env{'course.'.$courseid.'.num'};
11805: }
11806: my $key=join("\0",'slots',$cdom,$cnum,$which);
11807: my %slotinfo;
11808: if (exists($remembered{$key})) {
11809: $slotinfo{$which} = $remembered{$key};
11810: } else {
11811: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11812: &Apache::lonhomework::showhash(%slotinfo);
11813: my ($tmp)=keys(%slotinfo);
11814: if ($tmp=~/^error:/) { return (); }
11815: $remembered{$key} = $slotinfo{$which};
11816: }
11817: if (ref($slotinfo{$which}) eq 'HASH') {
11818: return %{$slotinfo{$which}};
11819: }
11820: return $slotinfo{$which};
11821: }
11822:
11823: sub get_reservable_slots {
11824: my ($cnum,$cdom,$uname,$udom) = @_;
11825: my $now = time;
11826: my $reservable_info;
11827: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11828: if (exists($remembered{$key})) {
11829: $reservable_info = $remembered{$key};
11830: } else {
11831: my %resv;
11832: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
11833: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
11834: $reservable_info = \%resv;
11835: $remembered{$key} = $reservable_info;
11836: }
11837: return $reservable_info;
11838: }
11839:
11840: sub get_course_slots {
11841: my ($cnum,$cdom) = @_;
11842: my $hashid=$cnum.':'.$cdom;
11843: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
11844: if (defined($cached)) {
11845: if (ref($result) eq 'HASH') {
11846: return %{$result};
11847: }
11848: } else {
11849: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
11850: my ($tmp) = keys(%slots);
11851: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11852: &do_cache_new('allslots',$hashid,\%slots,600);
11853: return %slots;
11854: }
11855: }
11856: return;
11857: }
11858:
11859: sub devalidate_slots_cache {
11860: my ($cnum,$cdom)=@_;
11861: my $hashid=$cnum.':'.$cdom;
11862: &devalidate_cache_new('allslots',$hashid);
11863: }
11864:
11865: sub get_coursechange {
11866: my ($cdom,$cnum) = @_;
11867: if ($cdom eq '' || $cnum eq '') {
11868: return unless ($env{'request.course.id'});
11869: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11870: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11871: }
11872: my $hashid=$cdom.'_'.$cnum;
11873: my ($change,$cached)=&is_cached_new('crschange',$hashid);
11874: if ((defined($cached)) && ($change ne '')) {
11875: return $change;
11876: } else {
11877: my %crshash;
11878: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
11879: if ($crshash{'internal.contentchange'} eq '') {
11880: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
11881: if ($change eq '') {
11882: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
11883: $change = $crshash{'internal.created'};
11884: }
11885: } else {
11886: $change = $crshash{'internal.contentchange'};
11887: }
11888: my $cachetime = 600;
11889: &do_cache_new('crschange',$hashid,$change,$cachetime);
11890: }
11891: return $change;
11892: }
11893:
11894: sub devalidate_coursechange_cache {
11895: my ($cnum,$cdom)=@_;
11896: my $hashid=$cnum.':'.$cdom;
11897: &devalidate_cache_new('crschange',$hashid);
11898: }
11899:
11900: # ------------------------------------------------- Update symbolic store links
11901:
11902: sub symblist {
11903: my ($mapname,%newhash)=@_;
11904: $mapname=&deversion(&declutter($mapname));
11905: my %hash;
11906: if (($env{'request.course.fn'}) && (%newhash)) {
11907: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11908: &GDBM_WRCREAT(),0640)) {
11909: foreach my $url (keys(%newhash)) {
11910: next if ($url eq 'last_known'
11911: && $env{'form.no_update_last_known'});
11912: $hash{declutter($url)}=&encode_symb($mapname,
11913: $newhash{$url}->[1],
11914: $newhash{$url}->[0]);
11915: }
11916: if (untie(%hash)) {
11917: return 'ok';
11918: }
11919: }
11920: }
11921: return 'error';
11922: }
11923:
11924: # --------------------------------------------------------------- Verify a symb
11925:
11926: sub symbverify {
11927: my ($symb,$thisurl,$encstate)=@_;
11928: my $thisfn=$thisurl;
11929: $thisfn=&declutter($thisfn);
11930: # direct jump to resource in page or to a sequence - will construct own symbs
11931: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
11932: # check URL part
11933: my ($map,$resid,$url)=&decode_symb($symb);
11934:
11935: unless ($url eq $thisfn) { return 0; }
11936:
11937: $symb=&symbclean($symb);
11938: $thisurl=&deversion($thisurl);
11939: $thisfn=&deversion($thisfn);
11940:
11941: my %bighash;
11942: my $okay=0;
11943:
11944: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11945: &GDBM_READER(),0640)) {
11946: my $noclutter;
11947: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
11948: $thisurl =~ s/\?.+$//;
11949: if ($map =~ m{^uploaded/.+\.page$}) {
11950: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
11951: $thisurl =~ s{^\Qhttp://https://\E}{https://};
11952: $noclutter = 1;
11953: }
11954: }
11955: my $ids;
11956: if ($noclutter) {
11957: $ids=$bighash{'ids_'.$thisurl};
11958: } else {
11959: $ids=$bighash{'ids_'.&clutter($thisurl)};
11960: }
11961: unless ($ids) {
11962: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
11963: $ids=$bighash{$idkey};
11964: }
11965: if ($ids) {
11966: # ------------------------------------------------------------------- Has ID(s)
11967: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
11968: $symb =~ s/\?.+$//;
11969: }
11970: foreach my $id (split(/\,/,$ids)) {
11971: my ($mapid,$resid)=split(/\./,$id);
11972: if (
11973: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
11974: eq $symb) {
11975: if (ref($encstate)) {
11976: $$encstate = $bighash{'encrypted_'.$id};
11977: }
11978: if (($env{'request.role.adv'}) ||
11979: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
11980: ($thisurl eq '/adm/navmaps')) {
11981: $okay=1;
11982: last;
11983: }
11984: }
11985: }
11986: }
11987: untie(%bighash);
11988: }
11989: return $okay;
11990: }
11991:
11992: # --------------------------------------------------------------- Clean-up symb
11993:
11994: sub symbclean {
11995: my $symb=shift;
11996: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11997: # remove version from map
11998: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11999:
12000: # remove version from URL
12001: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12002:
12003: # remove wrapper
12004:
12005: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12006: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12007: return $symb;
12008: }
12009:
12010: # ---------------------------------------------- Split symb to find map and url
12011:
12012: sub encode_symb {
12013: my ($map,$resid,$url)=@_;
12014: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12015: }
12016:
12017: sub decode_symb {
12018: my $symb=shift;
12019: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12020: my ($map,$resid,$url)=split(/___/,$symb);
12021: return (&fixversion($map),$resid,&fixversion($url));
12022: }
12023:
12024: sub fixversion {
12025: my $fn=shift;
12026: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12027: my %bighash;
12028: my $uri=&clutter($fn);
12029: my $key=$env{'request.course.id'}.'_'.$uri;
12030: # is this cached?
12031: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12032: if (defined($cached)) { return $result; }
12033: # unfortunately not cached, or expired
12034: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12035: &GDBM_READER(),0640)) {
12036: if ($bighash{'version_'.$uri}) {
12037: my $version=$bighash{'version_'.$uri};
12038: unless (($version eq 'mostrecent') ||
12039: ($version==&getversion($uri))) {
12040: $uri=~s/\.(\w+)$/\.$version\.$1/;
12041: }
12042: }
12043: untie %bighash;
12044: }
12045: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12046: }
12047:
12048: sub deversion {
12049: my $url=shift;
12050: $url=~s/\.\d+\.(\w+)$/\.$1/;
12051: return $url;
12052: }
12053:
12054: # ------------------------------------------------------ Return symb list entry
12055:
12056: sub symbread {
12057: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12058: my $cache_str='request.symbread.cached.'.$thisfn;
12059: if (defined($env{$cache_str})) {
12060: if ($ignorecachednull) {
12061: return $env{$cache_str} unless ($env{$cache_str} eq '');
12062: } else {
12063: return $env{$cache_str};
12064: }
12065: }
12066: # no filename provided? try from environment
12067: unless ($thisfn) {
12068: if ($env{'request.symb'}) {
12069: return $env{$cache_str}=&symbclean($env{'request.symb'});
12070: }
12071: $thisfn=$env{'request.filename'};
12072: }
12073: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12074: # is that filename actually a symb? Verify, clean, and return
12075: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12076: if (&symbverify($thisfn,$1)) {
12077: return $env{$cache_str}=&symbclean($thisfn);
12078: }
12079: }
12080: $thisfn=declutter($thisfn);
12081: my %hash;
12082: my %bighash;
12083: my $syval='';
12084: if (($env{'request.course.fn'}) && ($thisfn)) {
12085: my $targetfn = $thisfn;
12086: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12087: $targetfn = 'adm/wrapper/'.$thisfn;
12088: }
12089: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12090: $targetfn=$1;
12091: }
12092: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12093: &GDBM_READER(),0640)) {
12094: $syval=$hash{$targetfn};
12095: untie(%hash);
12096: }
12097: # ---------------------------------------------------------- There was an entry
12098: if ($syval) {
12099: #unless ($syval=~/\_\d+$/) {
12100: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12101: #&appenv({'request.ambiguous' => $thisfn});
12102: #return $env{$cache_str}='';
12103: #}
12104: #$syval.=$1;
12105: #}
12106: } else {
12107: # ------------------------------------------------------- Was not in symb table
12108: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12109: &GDBM_READER(),0640)) {
12110: # ---------------------------------------------- Get ID(s) for current resource
12111: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12112: unless ($ids) {
12113: $ids=$bighash{'ids_/'.$thisfn};
12114: }
12115: unless ($ids) {
12116: # alias?
12117: $ids=$bighash{'mapalias_'.$thisfn};
12118: }
12119: if ($ids) {
12120: # ------------------------------------------------------------------- Has ID(s)
12121: my @possibilities=split(/\,/,$ids);
12122: if ($#possibilities==0) {
12123: # ----------------------------------------------- There is only one possibility
12124: my ($mapid,$resid)=split(/\./,$ids);
12125: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12126: $resid,$thisfn);
12127: if (ref($possibles) eq 'HASH') {
12128: $possibles->{$syval} = 1;
12129: }
12130: if ($checkforblock) {
12131: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12132: if (@blockers) {
12133: $syval = '';
12134: return;
12135: }
12136: }
12137: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12138: # ------------------------------------------ There is more than one possibility
12139: my $realpossible=0;
12140: foreach my $id (@possibilities) {
12141: my $file=$bighash{'src_'.$id};
12142: my $canaccess;
12143: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12144: $canaccess = 1;
12145: } else {
12146: $canaccess = &allowed('bre',$file);
12147: }
12148: if ($canaccess) {
12149: my ($mapid,$resid)=split(/\./,$id);
12150: if ($bighash{'map_type_'.$mapid} ne 'page') {
12151: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12152: $resid,$thisfn);
12153: if (ref($possibles) eq 'HASH') {
12154: $possibles->{$syval} = 1;
12155: }
12156: if ($checkforblock) {
12157: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12158: unless (@blockers > 0) {
12159: $syval = $poss_syval;
12160: $realpossible++;
12161: }
12162: } else {
12163: $syval = $poss_syval;
12164: $realpossible++;
12165: }
12166: }
12167: }
12168: }
12169: if ($realpossible!=1) { $syval=''; }
12170: } else {
12171: $syval='';
12172: }
12173: }
12174: untie(%bighash);
12175: }
12176: }
12177: if ($syval) {
12178: return $env{$cache_str}=$syval;
12179: }
12180: }
12181: &appenv({'request.ambiguous' => $thisfn});
12182: return $env{$cache_str}='';
12183: }
12184:
12185: # ---------------------------------------------------------- Return random seed
12186:
12187: sub numval {
12188: my $txt=shift;
12189: $txt=~tr/A-J/0-9/;
12190: $txt=~tr/a-j/0-9/;
12191: $txt=~tr/K-T/0-9/;
12192: $txt=~tr/k-t/0-9/;
12193: $txt=~tr/U-Z/0-5/;
12194: $txt=~tr/u-z/0-5/;
12195: $txt=~s/\D//g;
12196: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12197: return int($txt);
12198: }
12199:
12200: sub numval2 {
12201: my $txt=shift;
12202: $txt=~tr/A-J/0-9/;
12203: $txt=~tr/a-j/0-9/;
12204: $txt=~tr/K-T/0-9/;
12205: $txt=~tr/k-t/0-9/;
12206: $txt=~tr/U-Z/0-5/;
12207: $txt=~tr/u-z/0-5/;
12208: $txt=~s/\D//g;
12209: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12210: my $total;
12211: foreach my $val (@txts) { $total+=$val; }
12212: if ($_64bit) { if ($total > 2**32) { return -1; } }
12213: return int($total);
12214: }
12215:
12216: sub numval3 {
12217: use integer;
12218: my $txt=shift;
12219: $txt=~tr/A-J/0-9/;
12220: $txt=~tr/a-j/0-9/;
12221: $txt=~tr/K-T/0-9/;
12222: $txt=~tr/k-t/0-9/;
12223: $txt=~tr/U-Z/0-5/;
12224: $txt=~tr/u-z/0-5/;
12225: $txt=~s/\D//g;
12226: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12227: my $total;
12228: foreach my $val (@txts) { $total+=$val; }
12229: if ($_64bit) { $total=(($total<<32)>>32); }
12230: return $total;
12231: }
12232:
12233: sub digest {
12234: my ($data)=@_;
12235: my $digest=&Digest::MD5::md5($data);
12236: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12237: my ($e,$f);
12238: {
12239: use integer;
12240: $e=($a+$b);
12241: $f=($c+$d);
12242: if ($_64bit) {
12243: $e=(($e<<32)>>32);
12244: $f=(($f<<32)>>32);
12245: }
12246: }
12247: if (wantarray) {
12248: return ($e,$f);
12249: } else {
12250: my $g;
12251: {
12252: use integer;
12253: $g=($e+$f);
12254: if ($_64bit) {
12255: $g=(($g<<32)>>32);
12256: }
12257: }
12258: return $g;
12259: }
12260: }
12261:
12262: sub latest_rnd_algorithm_id {
12263: return '64bit5';
12264: }
12265:
12266: sub get_rand_alg {
12267: my ($courseid)=@_;
12268: if (!$courseid) { $courseid=(&whichuser())[1]; }
12269: if ($courseid) {
12270: return $env{"course.$courseid.rndseed"};
12271: }
12272: return &latest_rnd_algorithm_id();
12273: }
12274:
12275: sub validCODE {
12276: my ($CODE)=@_;
12277: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12278: return 0;
12279: }
12280:
12281: sub getCODE {
12282: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12283: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12284: defined($Apache::lonhomework::parsing_a_task) ) &&
12285: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12286: return $Apache::lonhomework::history{'resource.CODE'};
12287: }
12288: return undef;
12289: }
12290: #
12291: # Determines the random seed for a specific context:
12292: #
12293: # parameters:
12294: # symb - in course context the symb for the seed.
12295: # course_id - The course id of the form domain_coursenum.
12296: # domain - Domain for the user.
12297: # course - Course for the user.
12298: # cenv - environment of the course.
12299: #
12300: # NOTE:
12301: # All parameters are picked out of the environment if missing
12302: # or not defined.
12303: # If a symb cannot be determined the current time is used instead.
12304: #
12305: # For a given well defined symb, courside, domain, username,
12306: # and course environment, the seed is reproducible.
12307: #
12308: sub rndseed {
12309: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12310: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12311: if (!defined($symb)) {
12312: unless ($symb=$wsymb) { return time; }
12313: }
12314: if (!defined $courseid) {
12315: $courseid=$wcourseid;
12316: }
12317: if (!defined $domain) { $domain=$wdomain; }
12318: if (!defined $username) { $username=$wusername }
12319:
12320: my $which;
12321: if (defined($cenv->{'rndseed'})) {
12322: $which = $cenv->{'rndseed'};
12323: } else {
12324: $which =&get_rand_alg($courseid);
12325: }
12326: if (defined(&getCODE())) {
12327:
12328: if ($which eq '64bit5') {
12329: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12330: } elsif ($which eq '64bit4') {
12331: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12332: } else {
12333: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12334: }
12335: } elsif ($which eq '64bit5') {
12336: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12337: } elsif ($which eq '64bit4') {
12338: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12339: } elsif ($which eq '64bit3') {
12340: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12341: } elsif ($which eq '64bit2') {
12342: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12343: } elsif ($which eq '64bit') {
12344: return &rndseed_64bit($symb,$courseid,$domain,$username);
12345: }
12346: return &rndseed_32bit($symb,$courseid,$domain,$username);
12347: }
12348:
12349: sub rndseed_32bit {
12350: my ($symb,$courseid,$domain,$username)=@_;
12351: {
12352: use integer;
12353: my $symbchck=unpack("%32C*",$symb) << 27;
12354: my $symbseed=numval($symb) << 22;
12355: my $namechck=unpack("%32C*",$username) << 17;
12356: my $nameseed=numval($username) << 12;
12357: my $domainseed=unpack("%32C*",$domain) << 7;
12358: my $courseseed=unpack("%32C*",$courseid);
12359: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12360: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12361: #&logthis("rndseed :$num:$symb");
12362: if ($_64bit) { $num=(($num<<32)>>32); }
12363: return $num;
12364: }
12365: }
12366:
12367: sub rndseed_64bit {
12368: my ($symb,$courseid,$domain,$username)=@_;
12369: {
12370: use integer;
12371: my $symbchck=unpack("%32S*",$symb) << 21;
12372: my $symbseed=numval($symb) << 10;
12373: my $namechck=unpack("%32S*",$username);
12374:
12375: my $nameseed=numval($username) << 21;
12376: my $domainseed=unpack("%32S*",$domain) << 10;
12377: my $courseseed=unpack("%32S*",$courseid);
12378:
12379: my $num1=$symbchck+$symbseed+$namechck;
12380: my $num2=$nameseed+$domainseed+$courseseed;
12381: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12382: #&logthis("rndseed :$num:$symb");
12383: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12384: return "$num1,$num2";
12385: }
12386: }
12387:
12388: sub rndseed_64bit2 {
12389: my ($symb,$courseid,$domain,$username)=@_;
12390: {
12391: use integer;
12392: # strings need to be an even # of cahracters long, it it is odd the
12393: # last characters gets thrown away
12394: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12395: my $symbseed=numval($symb) << 10;
12396: my $namechck=unpack("%32S*",$username.' ');
12397:
12398: my $nameseed=numval($username) << 21;
12399: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12400: my $courseseed=unpack("%32S*",$courseid.' ');
12401:
12402: my $num1=$symbchck+$symbseed+$namechck;
12403: my $num2=$nameseed+$domainseed+$courseseed;
12404: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12405: #&logthis("rndseed :$num:$symb");
12406: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12407: return "$num1,$num2";
12408: }
12409: }
12410:
12411: sub rndseed_64bit3 {
12412: my ($symb,$courseid,$domain,$username)=@_;
12413: {
12414: use integer;
12415: # strings need to be an even # of cahracters long, it it is odd the
12416: # last characters gets thrown away
12417: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12418: my $symbseed=numval2($symb) << 10;
12419: my $namechck=unpack("%32S*",$username.' ');
12420:
12421: my $nameseed=numval2($username) << 21;
12422: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12423: my $courseseed=unpack("%32S*",$courseid.' ');
12424:
12425: my $num1=$symbchck+$symbseed+$namechck;
12426: my $num2=$nameseed+$domainseed+$courseseed;
12427: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12428: #&logthis("rndseed :$num1:$num2:$_64bit");
12429: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12430:
12431: return "$num1:$num2";
12432: }
12433: }
12434:
12435: sub rndseed_64bit4 {
12436: my ($symb,$courseid,$domain,$username)=@_;
12437: {
12438: use integer;
12439: # strings need to be an even # of cahracters long, it it is odd the
12440: # last characters gets thrown away
12441: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12442: my $symbseed=numval3($symb) << 10;
12443: my $namechck=unpack("%32S*",$username.' ');
12444:
12445: my $nameseed=numval3($username) << 21;
12446: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12447: my $courseseed=unpack("%32S*",$courseid.' ');
12448:
12449: my $num1=$symbchck+$symbseed+$namechck;
12450: my $num2=$nameseed+$domainseed+$courseseed;
12451: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12452: #&logthis("rndseed :$num1:$num2:$_64bit");
12453: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12454:
12455: return "$num1:$num2";
12456: }
12457: }
12458:
12459: sub rndseed_64bit5 {
12460: my ($symb,$courseid,$domain,$username)=@_;
12461: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12462: return "$num1:$num2";
12463: }
12464:
12465: sub rndseed_CODE_64bit {
12466: my ($symb,$courseid,$domain,$username)=@_;
12467: {
12468: use integer;
12469: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12470: my $symbseed=numval2($symb);
12471: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12472: my $CODEseed=numval(&getCODE());
12473: my $courseseed=unpack("%32S*",$courseid.' ');
12474: my $num1=$symbseed+$CODEchck;
12475: my $num2=$CODEseed+$courseseed+$symbchck;
12476: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12477: #&logthis("rndseed :$num1:$num2:$symb");
12478: if ($_64bit) { $num1=(($num1<<32)>>32); }
12479: if ($_64bit) { $num2=(($num2<<32)>>32); }
12480: return "$num1:$num2";
12481: }
12482: }
12483:
12484: sub rndseed_CODE_64bit4 {
12485: my ($symb,$courseid,$domain,$username)=@_;
12486: {
12487: use integer;
12488: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12489: my $symbseed=numval3($symb);
12490: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12491: my $CODEseed=numval3(&getCODE());
12492: my $courseseed=unpack("%32S*",$courseid.' ');
12493: my $num1=$symbseed+$CODEchck;
12494: my $num2=$CODEseed+$courseseed+$symbchck;
12495: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12496: #&logthis("rndseed :$num1:$num2:$symb");
12497: if ($_64bit) { $num1=(($num1<<32)>>32); }
12498: if ($_64bit) { $num2=(($num2<<32)>>32); }
12499: return "$num1:$num2";
12500: }
12501: }
12502:
12503: sub rndseed_CODE_64bit5 {
12504: my ($symb,$courseid,$domain,$username)=@_;
12505: my $code = &getCODE();
12506: my ($num1,$num2)=&digest("$symb,$courseid,$code");
12507: return "$num1:$num2";
12508: }
12509:
12510: sub setup_random_from_rndseed {
12511: my ($rndseed)=@_;
12512: if ($rndseed =~/([,:])/) {
12513: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
12514: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
12515: &Math::Random::random_set_seed_from_phrase($rndseed);
12516: } else {
12517: &Math::Random::random_set_seed($num1,$num2);
12518: }
12519: } else {
12520: &Math::Random::random_set_seed_from_phrase($rndseed);
12521: }
12522: }
12523:
12524: sub latest_receipt_algorithm_id {
12525: return 'receipt3';
12526: }
12527:
12528: sub recunique {
12529: my $fucourseid=shift;
12530: my $unique;
12531: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
12532: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12533: $unique=$env{"course.$fucourseid.internal.encseed"};
12534: } else {
12535: $unique=$perlvar{'lonReceipt'};
12536: }
12537: return unpack("%32C*",$unique);
12538: }
12539:
12540: sub recprefix {
12541: my $fucourseid=shift;
12542: my $prefix;
12543: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
12544: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12545: $prefix=$env{"course.$fucourseid.internal.encpref"};
12546: } else {
12547: $prefix=$perlvar{'lonHostID'};
12548: }
12549: return unpack("%32C*",$prefix);
12550: }
12551:
12552: sub ireceipt {
12553: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
12554:
12555: my $return =&recprefix($fucourseid).'-';
12556:
12557: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12558: $env{'request.state'} eq 'construct') {
12559: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12560: return $return;
12561: }
12562:
12563: my $cuname=unpack("%32C*",$funame);
12564: my $cudom=unpack("%32C*",$fudom);
12565: my $cucourseid=unpack("%32C*",$fucourseid);
12566: my $cusymb=unpack("%32C*",$fusymb);
12567: my $cunique=&recunique($fucourseid);
12568: my $cpart=unpack("%32S*",$part);
12569: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12570:
12571: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12572:
12573: $return.= ($cunique%$cuname+
12574: $cunique%$cudom+
12575: $cusymb%$cuname+
12576: $cusymb%$cudom+
12577: $cucourseid%$cuname+
12578: $cucourseid%$cudom+
12579: $cpart%$cuname+
12580: $cpart%$cudom);
12581: } else {
12582: $return.= ($cunique%$cuname+
12583: $cunique%$cudom+
12584: $cusymb%$cuname+
12585: $cusymb%$cudom+
12586: $cucourseid%$cuname+
12587: $cucourseid%$cudom);
12588: }
12589: return $return;
12590: }
12591:
12592: sub receipt {
12593: my ($part)=@_;
12594: my ($symb,$courseid,$domain,$name) = &whichuser();
12595: return &ireceipt($name,$domain,$courseid,$symb,$part);
12596: }
12597:
12598: sub whichuser {
12599: my ($passedsymb)=@_;
12600: my ($symb,$courseid,$domain,$name,$publicuser);
12601: if (defined($env{'form.grade_symb'})) {
12602: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12603: my $allowed=&allowed('vgr',$tmp_courseid);
12604: if (!$allowed &&
12605: exists($env{'request.course.sec'}) &&
12606: $env{'request.course.sec'} !~ /^\s*$/) {
12607: $allowed=&allowed('vgr',$tmp_courseid.
12608: '/'.$env{'request.course.sec'});
12609: }
12610: if ($allowed) {
12611: ($symb)=&get_env_multiple('form.grade_symb');
12612: $courseid=$tmp_courseid;
12613: ($domain)=&get_env_multiple('form.grade_domain');
12614: ($name)=&get_env_multiple('form.grade_username');
12615: return ($symb,$courseid,$domain,$name,$publicuser);
12616: }
12617: }
12618: if (!$passedsymb) {
12619: $symb=&symbread();
12620: } else {
12621: $symb=$passedsymb;
12622: }
12623: $courseid=$env{'request.course.id'};
12624: $domain=$env{'user.domain'};
12625: $name=$env{'user.name'};
12626: if ($name eq 'public' && $domain eq 'public') {
12627: if (!defined($env{'form.username'})) {
12628: $env{'form.username'}.=time.rand(10000000);
12629: }
12630: $name.=$env{'form.username'};
12631: }
12632: return ($symb,$courseid,$domain,$name,$publicuser);
12633:
12634: }
12635:
12636: # ------------------------------------------------------------ Serves up a file
12637: # returns either the contents of the file or
12638: # -1 if the file doesn't exist
12639: #
12640: # if the target is a file that was uploaded via DOCS,
12641: # a check will be made to see if a current copy exists on the local server,
12642: # if it does this will be served, otherwise a copy will be retrieved from
12643: # the home server for the course and stored in /home/httpd/html/userfiles on
12644: # the local server.
12645:
12646: sub getfile {
12647: my ($file) = @_;
12648: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12649: &repcopy($file);
12650: return &readfile($file);
12651: }
12652:
12653: sub repcopy_userfile {
12654: my ($file)=@_;
12655: my $londocroot = $perlvar{'lonDocRoot'};
12656: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12657: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12658: my ($cdom,$cnum,$filename) =
12659: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12660: my $uri="/uploaded/$cdom/$cnum/$filename";
12661: if (-e "$file") {
12662: # we already have a local copy, check it out
12663: my @fileinfo = stat($file);
12664: my $rtncode;
12665: my $info;
12666: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12667: if ($lwpresp ne 'ok') {
12668: # there is no such file anymore, even though we had a local copy
12669: if ($rtncode eq '404') {
12670: unlink($file);
12671: }
12672: return -1;
12673: }
12674: if ($info < $fileinfo[9]) {
12675: # nice, the file we have is up-to-date, just say okay
12676: return 'ok';
12677: } else {
12678: # the file is outdated, get rid of it
12679: unlink($file);
12680: }
12681: }
12682: # one way or the other, at this point, we don't have the file
12683: # construct the correct path for the file
12684: my @parts = ($cdom,$cnum);
12685: if ($filename =~ m|^(.+)/[^/]+$|) {
12686: push @parts, split(/\//,$1);
12687: }
12688: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12689: foreach my $part (@parts) {
12690: $path .= '/'.$part;
12691: if (!-e $path) {
12692: mkdir($path,0770);
12693: }
12694: }
12695: # now the path exists for sure
12696: # get a user agent
12697: my $ua=new LWP::UserAgent;
12698: my $transferfile=$file.'.in.transfer';
12699: # FIXME: this should flock
12700: if (-e $transferfile) { return 'ok'; }
12701: my $request;
12702: $uri=~s/^\///;
12703: my $homeserver = &homeserver($cnum,$cdom);
12704: my $protocol = $protocol{$homeserver};
12705: $protocol = 'http' if ($protocol ne 'https');
12706: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12707: my $response=$ua->request($request,$transferfile);
12708: # did it work?
12709: if ($response->is_error()) {
12710: unlink($transferfile);
12711: &logthis("Userfile repcopy failed for $uri");
12712: return -1;
12713: }
12714: # worked, rename the transfer file
12715: rename($transferfile,$file);
12716: return 'ok';
12717: }
12718:
12719: sub tokenwrapper {
12720: my $uri=shift;
12721: $uri=~s|^https?\://([^/]+)||;
12722: $uri=~s|^/||;
12723: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12724: my $token=$1;
12725: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12726: if ($udom && $uname && $file) {
12727: $file=~s|(\?\.*)*$||;
12728: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12729: my $homeserver = &homeserver($uname,$udom);
12730: my $protocol = $protocol{$homeserver};
12731: $protocol = 'http' if ($protocol ne 'https');
12732: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12733: (($uri=~/\?/)?'&':'?').'token='.$token.
12734: '&tokenissued='.$perlvar{'lonHostID'};
12735: } else {
12736: return '/adm/notfound.html';
12737: }
12738: }
12739:
12740: # call with reqtype HEAD: get last modification time
12741: # call with reqtype GET: get the file contents
12742: # Do not call this with reqtype GET for large files! It loads everything into memory
12743: #
12744: sub getuploaded {
12745: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
12746: $uri=~s/^\///;
12747: my $homeserver = &homeserver($cnum,$cdom);
12748: my $protocol = $protocol{$homeserver};
12749: $protocol = 'http' if ($protocol ne 'https');
12750: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12751: my $ua=new LWP::UserAgent;
12752: my $request=new HTTP::Request($reqtype,$uri);
12753: my $response=$ua->request($request);
12754: $$rtncode = $response->code;
12755: if (! $response->is_success()) {
12756: return 'failed';
12757: }
12758: if ($reqtype eq 'HEAD') {
12759: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12760: } elsif ($reqtype eq 'GET') {
12761: $$info = $response->content;
12762: }
12763: return 'ok';
12764: }
12765:
12766: sub readfile {
12767: my $file = shift;
12768: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12769: my $fh;
12770: open($fh,"<$file");
12771: my $a='';
12772: while (my $line = <$fh>) { $a .= $line; }
12773: return $a;
12774: }
12775:
12776: sub filelocation {
12777: my ($dir,$file) = @_;
12778: my $location;
12779: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12780:
12781: if ($file =~ m-^/adm/-) {
12782: $file=~s-^/adm/wrapper/-/-;
12783: $file=~s-^/adm/coursedocs/showdoc/-/-;
12784: }
12785:
12786: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12787: $location = $file;
12788: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12789: my ($udom,$uname,$filename)=
12790: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12791: my $home=&homeserver($uname,$udom);
12792: my $is_me=0;
12793: my @ids=¤t_machine_ids();
12794: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12795: if ($is_me) {
12796: $location=propath($udom,$uname).'/userfiles/'.$filename;
12797: } else {
12798: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12799: $udom.'/'.$uname.'/'.$filename;
12800: }
12801: } elsif ($file =~ m-^/adm/-) {
12802: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12803: } else {
12804: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12805: $file=~s:^/(res|priv)/:/:;
12806: my $space=$1;
12807: if ( !( $file =~ m:^/:) ) {
12808: $location = $dir. '/'.$file;
12809: } else {
12810: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12811: }
12812: }
12813: $location=~s://+:/:g; # remove duplicate /
12814: while ($location=~m{/\.\./}) {
12815: if ($location =~ m{/[^/]+/\.\./}) {
12816: $location=~ s{/[^/]+/\.\./}{/}g;
12817: } else {
12818: $location=~ s{/\.\./}{/}g;
12819: }
12820: } #remove dir/..
12821: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12822: return $location;
12823: }
12824:
12825: sub hreflocation {
12826: my ($dir,$file)=@_;
12827: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12828: $file=filelocation($dir,$file);
12829: } elsif ($file=~m-^/adm/-) {
12830: $file=~s-^/adm/wrapper/-/-;
12831: $file=~s-^/adm/coursedocs/showdoc/-/-;
12832: }
12833: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
12834: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
12835: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
12836: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
12837: {/uploaded/$1/$2/}x;
12838: }
12839: if ($file=~ m{^/userfiles/}) {
12840: $file =~ s{^/userfiles/}{/uploaded/};
12841: }
12842: return $file;
12843: }
12844:
12845:
12846:
12847:
12848:
12849: sub current_machine_domains {
12850: return &machine_domains(&hostname($perlvar{'lonHostID'}));
12851: }
12852:
12853: sub machine_domains {
12854: my ($hostname) = @_;
12855: my @domains;
12856: my %hostname = &all_hostnames();
12857: while( my($id, $name) = each(%hostname)) {
12858: # &logthis("-$id-$name-$hostname-");
12859: if ($hostname eq $name) {
12860: push(@domains,&host_domain($id));
12861: }
12862: }
12863: return @domains;
12864: }
12865:
12866: sub current_machine_ids {
12867: return &machine_ids(&hostname($perlvar{'lonHostID'}));
12868: }
12869:
12870: sub machine_ids {
12871: my ($hostname) = @_;
12872: $hostname ||= &hostname($perlvar{'lonHostID'});
12873: my @ids;
12874: my %name_to_host = &all_names();
12875: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
12876: return @{ $name_to_host{$hostname} };
12877: }
12878: return;
12879: }
12880:
12881: sub additional_machine_domains {
12882: my @domains;
12883: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
12884: while( my $line = <$fh>) {
12885: $line =~ s/\s//g;
12886: push(@domains,$line);
12887: }
12888: return @domains;
12889: }
12890:
12891: sub default_login_domain {
12892: my $domain = $perlvar{'lonDefDomain'};
12893: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
12894: foreach my $posdom (¤t_machine_domains(),
12895: &additional_machine_domains()) {
12896: if (lc($posdom) eq lc($testdomain)) {
12897: $domain=$posdom;
12898: last;
12899: }
12900: }
12901: return $domain;
12902: }
12903:
12904: # ------------------------------------------------------------- Declutters URLs
12905:
12906: sub declutter {
12907: my $thisfn=shift;
12908: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12909: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
12910: $thisfn=~s{^/home/httpd/html}{};
12911: }
12912: $thisfn=~s/^\///;
12913: $thisfn=~s|^adm/wrapper/||;
12914: $thisfn=~s|^adm/coursedocs/showdoc/||;
12915: $thisfn=~s/^res\///;
12916: $thisfn=~s/^priv\///;
12917: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
12918: $thisfn=~s/\?.+$//;
12919: }
12920: return $thisfn;
12921: }
12922:
12923: # ------------------------------------------------------------- Clutter up URLs
12924:
12925: sub clutter {
12926: my $thisfn='/'.&declutter(shift);
12927: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
12928: || $thisfn =~ m{^/adm/(includes|pages)} ) {
12929: $thisfn='/res'.$thisfn;
12930: }
12931: if ($thisfn !~m|^/adm|) {
12932: if ($thisfn =~ m|^/ext/|) {
12933: $thisfn='/adm/wrapper'.$thisfn;
12934: } else {
12935: my ($ext) = ($thisfn =~ /\.(\w+)$/);
12936: my $embstyle=&Apache::loncommon::fileembstyle($ext);
12937: if ($embstyle eq 'ssi'
12938: || ($embstyle eq 'hdn')
12939: || ($embstyle eq 'rat')
12940: || ($embstyle eq 'prv')
12941: || ($embstyle eq 'ign')) {
12942: #do nothing with these
12943: } elsif (($embstyle eq 'img')
12944: || ($embstyle eq 'emb')
12945: || ($embstyle eq 'wrp')) {
12946: $thisfn='/adm/wrapper'.$thisfn;
12947: } elsif ($embstyle eq 'unk'
12948: && $thisfn!~/\.(sequence|page)$/) {
12949: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
12950: } else {
12951: # &logthis("Got a blank emb style");
12952: }
12953: }
12954: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/exttools?$}) {
12955: $thisfn='/adm/wrapper'.$thisfn;
12956: }
12957: return $thisfn;
12958: }
12959:
12960: sub clutter_with_no_wrapper {
12961: my $uri = &clutter(shift);
12962: if ($uri =~ m-^/adm/-) {
12963: $uri =~ s-^/adm/wrapper/-/-;
12964: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
12965: }
12966: return $uri;
12967: }
12968:
12969: sub freeze_escape {
12970: my ($value)=@_;
12971: if (ref($value)) {
12972: $value=&nfreeze($value);
12973: return '__FROZEN__'.&escape($value);
12974: }
12975: return &escape($value);
12976: }
12977:
12978:
12979: sub thaw_unescape {
12980: my ($value)=@_;
12981: if ($value =~ /^__FROZEN__/) {
12982: substr($value,0,10,undef);
12983: $value=&unescape($value);
12984: return &thaw($value);
12985: }
12986: return &unescape($value);
12987: }
12988:
12989: sub correct_line_ends {
12990: my ($result)=@_;
12991: $$result =~s/\r\n/\n/mg;
12992: $$result =~s/\r/\n/mg;
12993: }
12994: # ================================================================ Main Program
12995:
12996: sub goodbye {
12997: &logthis("Starting Shut down");
12998: #not converted to using infrastruture and probably shouldn't be
12999: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13000: #converted
13001: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13002: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13003: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13004: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13005: #1.1 only
13006: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13007: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13008: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13009: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13010: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13011: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13012: &logthis(sprintf("%-20s is %s",'hits',$hits));
13013: &flushcourselogs();
13014: &logthis("Shutting down");
13015: }
13016:
13017: sub get_dns {
13018: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13019: if (!$ignore_cache) {
13020: my ($content,$cached)=
13021: &Apache::lonnet::is_cached_new('dns',$url);
13022: if ($cached) {
13023: &$func($content,$hashref);
13024: return;
13025: }
13026: }
13027:
13028: my %alldns;
13029: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13030: foreach my $dns (<$config>) {
13031: next if ($dns !~ /^\^(\S*)/x);
13032: my $line = $1;
13033: my ($host,$protocol) = split(/:/,$line);
13034: if ($protocol ne 'https') {
13035: $protocol = 'http';
13036: }
13037: $alldns{$host} = $protocol;
13038: }
13039: while (%alldns) {
13040: my ($dns) = sort { $b cmp $a } keys(%alldns);
13041: my $ua=new LWP::UserAgent;
13042: $ua->timeout(30);
13043: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13044: my $response=$ua->request($request);
13045: delete($alldns{$dns});
13046: next if ($response->is_error());
13047: my @content = split("\n",$response->content);
13048: unless ($nocache) {
13049: &do_cache_new('dns',$url,\@content,30*24*60*60);
13050: }
13051: &$func(\@content,$hashref);
13052: return;
13053: }
13054: close($config);
13055: my $which = (split('/',$url))[3];
13056: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13057: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
13058: my @content = <$config>;
13059: &$func(\@content,$hashref);
13060: return;
13061: }
13062:
13063: # ------------------------------------------------------Get DNS checksums file
13064: sub parse_dns_checksums_tab {
13065: my ($lines,$hashref) = @_;
13066: my $lonhost = $perlvar{'lonHostID'};
13067: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13068: my $loncaparev = &get_server_loncaparev($machine_dom);
13069: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13070: my $webconfdir = '/etc/httpd/conf';
13071: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13072: $webconfdir = '/etc/apache2';
13073: } elsif ($distro =~ /^sles(\d+)$/) {
13074: if ($1 >= 10) {
13075: $webconfdir = '/etc/apache2';
13076: }
13077: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13078: if ($1 >= 10.0) {
13079: $webconfdir = '/etc/apache2';
13080: }
13081: }
13082: my ($release,$timestamp) = split(/\-/,$loncaparev);
13083: my (%chksum,%revnum);
13084: if (ref($lines) eq 'ARRAY') {
13085: chomp(@{$lines});
13086: my $version = shift(@{$lines});
13087: if ($version eq $release) {
13088: foreach my $line (@{$lines}) {
13089: my ($file,$version,$shasum) = split(/,/,$line);
13090: if ($file =~ m{^/etc/httpd/conf}) {
13091: if ($webconfdir eq '/etc/apache2') {
13092: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13093: }
13094: }
13095: $chksum{$file} = $shasum;
13096: $revnum{$file} = $version;
13097: }
13098: if (ref($hashref) eq 'HASH') {
13099: %{$hashref} = (
13100: sums => \%chksum,
13101: versions => \%revnum,
13102: );
13103: }
13104: }
13105: }
13106: return;
13107: }
13108:
13109: sub fetch_dns_checksums {
13110: my %checksums;
13111: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13112: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13113: my ($release,$timestamp) = split(/\-/,$loncaparev);
13114: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13115: \%checksums);
13116: return \%checksums;
13117: }
13118:
13119: # ------------------------------------------------------------ Read domain file
13120: {
13121: my $loaded;
13122: my %domain;
13123:
13124: sub parse_domain_tab {
13125: my ($lines) = @_;
13126: foreach my $line (@$lines) {
13127: next if ($line =~ /^(\#|\s*$ )/x);
13128:
13129: chomp($line);
13130: my ($name,@elements) = split(/:/,$line,9);
13131: my %this_domain;
13132: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13133: 'lang_def', 'city', 'longi', 'lati',
13134: 'primary') {
13135: $this_domain{$field} = shift(@elements);
13136: }
13137: $domain{$name} = \%this_domain;
13138: }
13139: }
13140:
13141: sub reset_domain_info {
13142: undef($loaded);
13143: undef(%domain);
13144: }
13145:
13146: sub load_domain_tab {
13147: my ($ignore_cache,$nocache) = @_;
13148: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13149: my $fh;
13150: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
13151: my @lines = <$fh>;
13152: &parse_domain_tab(\@lines);
13153: }
13154: close($fh);
13155: $loaded = 1;
13156: }
13157:
13158: sub domain {
13159: &load_domain_tab() if (!$loaded);
13160:
13161: my ($name,$what) = @_;
13162: return if ( !exists($domain{$name}) );
13163:
13164: if (!$what) {
13165: return $domain{$name}{'description'};
13166: }
13167: return $domain{$name}{$what};
13168: }
13169:
13170: sub domain_info {
13171: &load_domain_tab() if (!$loaded);
13172: return %domain;
13173: }
13174:
13175: }
13176:
13177:
13178: # ------------------------------------------------------------- Read hosts file
13179: {
13180: my %hostname;
13181: my %hostdom;
13182: my %libserv;
13183: my $loaded;
13184: my %name_to_host;
13185: my %internetdom;
13186: my %LC_dns_serv;
13187:
13188: sub parse_hosts_tab {
13189: my ($file) = @_;
13190: foreach my $configline (@$file) {
13191: next if ($configline =~ /^(\#|\s*$ )/x);
13192: chomp($configline);
13193: if ($configline =~ /^\^/) {
13194: if ($configline =~ /^\^([\w.\-]+)/) {
13195: $LC_dns_serv{$1} = 1;
13196: }
13197: next;
13198: }
13199: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13200: $name=~s/\s//g;
13201: if ($id && $domain && $role && $name) {
13202: $hostname{$id}=$name;
13203: push(@{$name_to_host{$name}}, $id);
13204: $hostdom{$id}=$domain;
13205: if ($role eq 'library') { $libserv{$id}=$name; }
13206: if (defined($protocol)) {
13207: if ($protocol eq 'https') {
13208: $protocol{$id} = $protocol;
13209: } else {
13210: $protocol{$id} = 'http';
13211: }
13212: } else {
13213: $protocol{$id} = 'http';
13214: }
13215: if (defined($intdom)) {
13216: $internetdom{$id} = $intdom;
13217: }
13218: }
13219: }
13220: }
13221:
13222: sub reset_hosts_info {
13223: &purge_remembered();
13224: &reset_domain_info();
13225: &reset_hosts_ip_info();
13226: undef(%name_to_host);
13227: undef(%hostname);
13228: undef(%hostdom);
13229: undef(%libserv);
13230: undef($loaded);
13231: }
13232:
13233: sub load_hosts_tab {
13234: my ($ignore_cache,$nocache) = @_;
13235: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13236: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
13237: my @config = <$config>;
13238: &parse_hosts_tab(\@config);
13239: close($config);
13240: $loaded=1;
13241: }
13242:
13243: sub hostname {
13244: &load_hosts_tab() if (!$loaded);
13245:
13246: my ($lonid) = @_;
13247: return $hostname{$lonid};
13248: }
13249:
13250: sub all_hostnames {
13251: &load_hosts_tab() if (!$loaded);
13252:
13253: return %hostname;
13254: }
13255:
13256: sub all_names {
13257: my ($ignore_cache,$nocache) = @_;
13258: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13259:
13260: return %name_to_host;
13261: }
13262:
13263: sub all_host_domain {
13264: &load_hosts_tab() if (!$loaded);
13265: return %hostdom;
13266: }
13267:
13268: sub is_library {
13269: &load_hosts_tab() if (!$loaded);
13270:
13271: return exists($libserv{$_[0]});
13272: }
13273:
13274: sub all_library {
13275: &load_hosts_tab() if (!$loaded);
13276:
13277: return %libserv;
13278: }
13279:
13280: sub unique_library {
13281: #2x reverse removes all hostnames that appear more than once
13282: my %unique = reverse &all_library();
13283: return reverse %unique;
13284: }
13285:
13286: sub get_servers {
13287: &load_hosts_tab() if (!$loaded);
13288:
13289: my ($domain,$type) = @_;
13290: my %possible_hosts = ($type eq 'library') ? %libserv
13291: : %hostname;
13292: my %result;
13293: if (ref($domain) eq 'ARRAY') {
13294: while ( my ($host,$hostname) = each(%possible_hosts)) {
13295: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13296: $result{$host} = $hostname;
13297: }
13298: }
13299: } else {
13300: while ( my ($host,$hostname) = each(%possible_hosts)) {
13301: if ($hostdom{$host} eq $domain) {
13302: $result{$host} = $hostname;
13303: }
13304: }
13305: }
13306: return %result;
13307: }
13308:
13309: sub get_unique_servers {
13310: my %unique = reverse &get_servers(@_);
13311: return reverse %unique;
13312: }
13313:
13314: sub host_domain {
13315: &load_hosts_tab() if (!$loaded);
13316:
13317: my ($lonid) = @_;
13318: return $hostdom{$lonid};
13319: }
13320:
13321: sub all_domains {
13322: &load_hosts_tab() if (!$loaded);
13323:
13324: my %seen;
13325: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13326: return @uniq;
13327: }
13328:
13329: sub internet_dom {
13330: &load_hosts_tab() if (!$loaded);
13331:
13332: my ($lonid) = @_;
13333: return $internetdom{$lonid};
13334: }
13335:
13336: sub is_LC_dns {
13337: &load_hosts_tab() if (!$loaded);
13338:
13339: my ($hostname) = @_;
13340: return exists($LC_dns_serv{$hostname});
13341: }
13342:
13343: }
13344:
13345: {
13346: my %iphost;
13347: my %name_to_ip;
13348: my %lonid_to_ip;
13349:
13350: sub get_hosts_from_ip {
13351: my ($ip) = @_;
13352: my %iphosts = &get_iphost();
13353: if (ref($iphosts{$ip})) {
13354: return @{$iphosts{$ip}};
13355: }
13356: return;
13357: }
13358:
13359: sub reset_hosts_ip_info {
13360: undef(%iphost);
13361: undef(%name_to_ip);
13362: undef(%lonid_to_ip);
13363: }
13364:
13365: sub get_host_ip {
13366: my ($lonid) = @_;
13367: if (exists($lonid_to_ip{$lonid})) {
13368: return $lonid_to_ip{$lonid};
13369: }
13370: my $name=&hostname($lonid);
13371: my $ip = gethostbyname($name);
13372: return if (!$ip || length($ip) ne 4);
13373: $ip=inet_ntoa($ip);
13374: $name_to_ip{$name} = $ip;
13375: $lonid_to_ip{$lonid} = $ip;
13376: return $ip;
13377: }
13378:
13379: sub get_iphost {
13380: my ($ignore_cache,$nocache) = @_;
13381:
13382: if (!$ignore_cache) {
13383: if (%iphost) {
13384: return %iphost;
13385: }
13386: my ($ip_info,$cached)=
13387: &Apache::lonnet::is_cached_new('iphost','iphost');
13388: if ($cached) {
13389: %iphost = %{$ip_info->[0]};
13390: %name_to_ip = %{$ip_info->[1]};
13391: %lonid_to_ip = %{$ip_info->[2]};
13392: return %iphost;
13393: }
13394: }
13395:
13396: # get yesterday's info for fallback
13397: my %old_name_to_ip;
13398: my ($ip_info,$cached)=
13399: &Apache::lonnet::is_cached_new('iphost','iphost');
13400: if ($cached) {
13401: %old_name_to_ip = %{$ip_info->[1]};
13402: }
13403:
13404: my %name_to_host = &all_names($ignore_cache,$nocache);
13405: foreach my $name (keys(%name_to_host)) {
13406: my $ip;
13407: if (!exists($name_to_ip{$name})) {
13408: $ip = gethostbyname($name);
13409: if (!$ip || length($ip) ne 4) {
13410: if (defined($old_name_to_ip{$name})) {
13411: $ip = $old_name_to_ip{$name};
13412: &logthis("Can't find $name defaulting to old $ip");
13413: } else {
13414: &logthis("Name $name no IP found");
13415: next;
13416: }
13417: } else {
13418: $ip=inet_ntoa($ip);
13419: }
13420: $name_to_ip{$name} = $ip;
13421: } else {
13422: $ip = $name_to_ip{$name};
13423: }
13424: foreach my $id (@{ $name_to_host{$name} }) {
13425: $lonid_to_ip{$id} = $ip;
13426: }
13427: push(@{$iphost{$ip}},@{$name_to_host{$name}});
13428: }
13429: unless ($nocache) {
13430: &do_cache_new('iphost','iphost',
13431: [\%iphost,\%name_to_ip,\%lonid_to_ip],
13432: 48*60*60);
13433: }
13434:
13435: return %iphost;
13436: }
13437:
13438: #
13439: # Given a DNS returns the loncapa host name for that DNS
13440: #
13441: sub host_from_dns {
13442: my ($dns) = @_;
13443: my @hosts;
13444: my $ip;
13445:
13446: if (exists($name_to_ip{$dns})) {
13447: $ip = $name_to_ip{$dns};
13448: }
13449: if (!$ip) {
13450: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
13451: if (length($ip) == 4) {
13452: $ip = &IO::Socket::inet_ntoa($ip);
13453: }
13454: }
13455: if ($ip) {
13456: @hosts = get_hosts_from_ip($ip);
13457: return $hosts[0];
13458: }
13459: return undef;
13460: }
13461:
13462: sub get_internet_names {
13463: my ($lonid) = @_;
13464: return if ($lonid eq '');
13465: my ($idnref,$cached)=
13466: &Apache::lonnet::is_cached_new('internetnames',$lonid);
13467: if ($cached) {
13468: return $idnref;
13469: }
13470: my $ip = &get_host_ip($lonid);
13471: my @hosts = &get_hosts_from_ip($ip);
13472: my %iphost = &get_iphost();
13473: my (@idns,%seen);
13474: foreach my $id (@hosts) {
13475: my $dom = &host_domain($id);
13476: my $prim_id = &domain($dom,'primary');
13477: my $prim_ip = &get_host_ip($prim_id);
13478: next if ($seen{$prim_ip});
13479: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
13480: foreach my $id (@{$iphost{$prim_ip}}) {
13481: my $intdom = &internet_dom($id);
13482: unless (grep(/^\Q$intdom\E$/,@idns)) {
13483: push(@idns,$intdom);
13484: }
13485: }
13486: }
13487: $seen{$prim_ip} = 1;
13488: }
13489: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
13490: }
13491:
13492: }
13493:
13494: sub all_loncaparevs {
13495: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
13496: }
13497:
13498: # ---------------------------------------------------------- Read loncaparev table
13499: {
13500: sub load_loncaparevs {
13501: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
13502: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
13503: while (my $configline=<$config>) {
13504: chomp($configline);
13505: my ($hostid,$loncaparev)=split(/:/,$configline);
13506: $loncaparevs{$hostid}=$loncaparev;
13507: }
13508: close($config);
13509: }
13510: }
13511: }
13512: }
13513:
13514: # ---------------------------------------------------------- Read serverhostID table
13515: {
13516: sub load_serverhomeIDs {
13517: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
13518: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
13519: while (my $configline=<$config>) {
13520: chomp($configline);
13521: my ($name,$id)=split(/:/,$configline);
13522: $serverhomeIDs{$name}=$id;
13523: }
13524: close($config);
13525: }
13526: }
13527: }
13528: }
13529:
13530:
13531: BEGIN {
13532:
13533: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
13534: unless ($readit) {
13535: {
13536: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
13537: %perlvar = (%perlvar,%{$configvars});
13538: }
13539:
13540:
13541: # ------------------------------------------------------ Read spare server file
13542: {
13543: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
13544:
13545: while (my $configline=<$config>) {
13546: chomp($configline);
13547: if ($configline) {
13548: my ($host,$type) = split(':',$configline,2);
13549: if (!defined($type) || $type eq '') { $type = 'default' };
13550: push(@{ $spareid{$type} }, $host);
13551: }
13552: }
13553: close($config);
13554: }
13555: # ------------------------------------------------------------ Read permissions
13556: {
13557: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
13558:
13559: while (my $configline=<$config>) {
13560: chomp($configline);
13561: if ($configline) {
13562: my ($role,$perm)=split(/ /,$configline);
13563: if ($perm ne '') { $pr{$role}=$perm; }
13564: }
13565: }
13566: close($config);
13567: }
13568:
13569: # -------------------------------------------- Read plain texts for permissions
13570: {
13571: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
13572:
13573: while (my $configline=<$config>) {
13574: chomp($configline);
13575: if ($configline) {
13576: my ($short,@plain)=split(/:/,$configline);
13577: %{$prp{$short}} = ();
13578: if (@plain > 0) {
13579: $prp{$short}{'std'} = $plain[0];
13580: for (my $i=1; $i<@plain; $i++) {
13581: $prp{$short}{'alt'.$i} = $plain[$i];
13582: }
13583: }
13584: }
13585: }
13586: close($config);
13587: }
13588:
13589: # ---------------------------------------------------------- Read package table
13590: {
13591: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
13592:
13593: while (my $configline=<$config>) {
13594: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13595: chomp($configline);
13596: my ($short,$plain)=split(/:/,$configline);
13597: my ($pack,$name)=split(/\&/,$short);
13598: if ($plain ne '') {
13599: $packagetab{$pack.'&'.$name.'&name'}=$name;
13600: $packagetab{$short}=$plain;
13601: }
13602: }
13603: close($config);
13604: }
13605:
13606: # ---------------------------------------------------------- Read loncaparev table
13607:
13608: &load_loncaparevs();
13609:
13610: # ---------------------------------------------------------- Read serverhostID table
13611:
13612: &load_serverhomeIDs();
13613:
13614: # ---------------------------------------------------------- Read releaseslist XML
13615: {
13616: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13617: if (-e $file) {
13618: my $parser = HTML::LCParser->new($file);
13619: while (my $token = $parser->get_token()) {
13620: if ($token->[0] eq 'S') {
13621: my $item = $token->[1];
13622: my $name = $token->[2]{'name'};
13623: my $value = $token->[2]{'value'};
13624: my $valuematch = $token->[2]{'valuematch'};
13625: my $namematch = $token->[2]{'namematch'};
13626: if ($item eq 'parameter') {
13627: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
13628: my $release = $parser->get_text();
13629: $release =~ s/(^\s*|\s*$ )//gx;
13630: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
13631: }
13632: } elsif ($item ne '' && $name ne '') {
13633: my $release = $parser->get_text();
13634: $release =~ s/(^\s*|\s*$ )//gx;
13635: $needsrelease{$item.':'.$name.':'.$value} = $release;
13636: }
13637: }
13638: }
13639: }
13640: }
13641:
13642: # ---------------------------------------------------------- Read managers table
13643: {
13644: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13645: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
13646: while (my $configline=<$config>) {
13647: chomp($configline);
13648: next if ($configline =~ /^\#/);
13649: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13650: $managerstab{$configline} = 1;
13651: }
13652: }
13653: close($config);
13654: }
13655: }
13656: }
13657:
13658: # ------------- set up temporary directory
13659: {
13660: $tmpdir = LONCAPA::tempdir();
13661:
13662: }
13663:
13664: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13665: 'compress_threshold'=> 20_000,
13666: });
13667:
13668: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13669: $dumpcount=0;
13670: $locknum=0;
13671:
13672: &logtouch();
13673: &logthis('<font color="yellow">INFO: Read configuration</font>');
13674: $readit=1;
13675: {
13676: use integer;
13677: my $test=(2**32)+1;
13678: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13679: &logthis(" Detected 64bit platform ($_64bit)");
13680: }
13681: }
13682: }
13683:
13684: 1;
13685: __END__
13686:
13687: =pod
13688:
13689: =head1 NAME
13690:
13691: Apache::lonnet - Subroutines to ask questions about things in the network.
13692:
13693: =head1 SYNOPSIS
13694:
13695: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13696:
13697: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13698:
13699: Common parameters:
13700:
13701: =over 4
13702:
13703: =item *
13704:
13705: $uname : an internal username (if $cname expecting a course Id specifically)
13706:
13707: =item *
13708:
13709: $udom : a domain (if $cdom expecting a course's domain specifically)
13710:
13711: =item *
13712:
13713: $symb : a resource instance identifier
13714:
13715: =item *
13716:
13717: $namespace : the name of a .db file that contains the data needed or
13718: being set.
13719:
13720: =back
13721:
13722: =head1 OVERVIEW
13723:
13724: lonnet provides subroutines which interact with the
13725: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
13726: about classes, users, and resources.
13727:
13728: For many of these objects you can also use this to store data about
13729: them or modify them in various ways.
13730:
13731: =head2 Symbs
13732:
13733: To identify a specific instance of a resource, LON-CAPA uses symbols
13734: or "symbs"X<symb>. These identifiers are built from the URL of the
13735: map, the resource number of the resource in the map, and the URL of
13736: the resource itself. The latter is somewhat redundant, but might help
13737: if maps change.
13738:
13739: An example is
13740:
13741: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
13742:
13743: The respective map entry is
13744:
13745: <resource id="19" src="/res/msu/korte/tests/part12.problem"
13746: title="Problem 2">
13747: </resource>
13748:
13749: Symbs are used by the random number generator, as well as to store and
13750: restore data specific to a certain instance of for example a problem.
13751:
13752: =head2 Storing And Retrieving Data
13753:
13754: X<store()>X<cstore()>X<restore()>Three of the most important functions
13755: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
13756: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
13757: is is the non-critical message twin of cstore. These functions are for
13758: handlers to store a perl hash to a user's permanent data space in an
13759: easy manner, and to retrieve it again on another call. It is expected
13760: that a handler would use this once at the beginning to retrieve data,
13761: and then again once at the end to send only the new data back.
13762:
13763: The data is stored in the user's data directory on the user's
13764: homeserver under the ID of the course.
13765:
13766: The hash that is returned by restore will have all of the previous
13767: value for all of the elements of the hash.
13768:
13769: Example:
13770:
13771: #creating a hash
13772: my %hash;
13773: $hash{'foo'}='bar';
13774:
13775: #storing it
13776: &Apache::lonnet::cstore(\%hash);
13777:
13778: #changing a value
13779: $hash{'foo'}='notbar';
13780:
13781: #adding a new value
13782: $hash{'bar'}='foo';
13783: &Apache::lonnet::cstore(\%hash);
13784:
13785: #retrieving the hash
13786: my %history=&Apache::lonnet::restore();
13787:
13788: #print the hash
13789: foreach my $key (sort(keys(%history))) {
13790: print("\%history{$key} = $history{$key}");
13791: }
13792:
13793: Will print out:
13794:
13795: %history{1:foo} = bar
13796: %history{1:keys} = foo:timestamp
13797: %history{1:timestamp} = 990455579
13798: %history{2:bar} = foo
13799: %history{2:foo} = notbar
13800: %history{2:keys} = foo:bar:timestamp
13801: %history{2:timestamp} = 990455580
13802: %history{bar} = foo
13803: %history{foo} = notbar
13804: %history{timestamp} = 990455580
13805: %history{version} = 2
13806:
13807: Note that the special hash entries C<keys>, C<version> and
13808: C<timestamp> were added to the hash. C<version> will be equal to the
13809: total number of versions of the data that have been stored. The
13810: C<timestamp> attribute will be the UNIX time the hash was
13811: stored. C<keys> is available in every historical section to list which
13812: keys were added or changed at a specific historical revision of a
13813: hash.
13814:
13815: B<Warning>: do not store the hash that restore returns directly. This
13816: will cause a mess since it will restore the historical keys as if the
13817: were new keys. I.E. 1:foo will become 1:1:foo etc.
13818:
13819: Calling convention:
13820:
13821: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13822: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13823:
13824: For more detailed information, see lonnet specific documentation.
13825:
13826: =head1 RETURN MESSAGES
13827:
13828: =over 4
13829:
13830: =item * B<con_lost>: unable to contact remote host
13831:
13832: =item * B<con_delayed>: unable to contact remote host, message will be delivered
13833: when the connection is brought back up
13834:
13835: =item * B<con_failed>: unable to contact remote host and unable to save message
13836: for later delivery
13837:
13838: =item * B<error:>: an error a occurred, a description of the error follows the :
13839:
13840: =item * B<no_such_host>: unable to fund a host associated with the user/domain
13841: that was requested
13842:
13843: =back
13844:
13845: =head1 PUBLIC SUBROUTINES
13846:
13847: =head2 Session Environment Functions
13848:
13849: =over 4
13850:
13851: =item *
13852: X<appenv()>
13853: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
13854: the user envirnoment file, and will be restored for each access this
13855: user makes during this session, also modifies the %env for the current
13856: process. Optional rolesarrayref - if defined contains a reference to an array
13857: of roles which are exempt from the restriction on modifying user.role entries
13858: in the user's environment.db and in %env.
13859:
13860: =item *
13861: X<delenv()>
13862: B<delenv($delthis,$regexp)>: removes all items from the session
13863: environment file that begin with $delthis. If the
13864: optional second arg - $regexp - is true, $delthis is treated as a
13865: regular expression, otherwise \Q$delthis\E is used.
13866: The values are also deleted from the current processes %env.
13867:
13868: =item * get_env_multiple($name)
13869:
13870: gets $name from the %env hash, it seemlessly handles the cases where multiple
13871: values may be defined and end up as an array ref.
13872:
13873: returns an array of values
13874:
13875: =back
13876:
13877: =head2 User Information
13878:
13879: =over 4
13880:
13881: =item *
13882: X<queryauthenticate()>
13883: B<queryauthenticate($uname,$udom)>: try to determine user's current
13884: authentication scheme
13885:
13886: =item *
13887: X<authenticate()>
13888: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
13889: authenticate user from domain's lib servers (first use the current
13890: one). C<$upass> should be the users password.
13891: $checkdefauth is optional (value is 1 if a check should be made to
13892: authenticate user using default authentication method, and allow
13893: account creation if username does not have account in the domain).
13894: $clientcancheckhost is optional (value is 1 if checking whether the
13895: server can host will occur on the client side in lonauth.pm).
13896:
13897: =item *
13898: X<homeserver()>
13899: B<homeserver($uname,$udom)>: find the server which has
13900: the user's directory and files (there must be only one), this caches
13901: the answer, and also caches if there is a borken connection.
13902:
13903: =item *
13904: X<idget()>
13905: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
13906: a list of student/employee IDs or clicker IDs
13907: (student/employee IDs are a unique resource in a domain, there must be
13908: only 1 ID per username, and only 1 username per ID in a specific domain).
13909: clickerIDs are not necessarily unique, as students might share clickers.
13910: (returns hash: id=>name,id=>name)
13911:
13912: =item *
13913: X<idrget()>
13914: B<idrget($udom,@unames)>: find the IDs behind a list of
13915: usernames (returns hash: name=>id,name=>id)
13916:
13917: =item *
13918: X<idput()>
13919: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
13920: names and associated student/employee IDs or clicker IDs.
13921:
13922: =item *
13923: X<iddel()>
13924: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
13925: student/employee ID or clicker ID username look-ups from domain.
13926: The homeserver ($uhome) and namespace ($namespace) are optional.
13927: If no $uhome is provided, it will be determined usig &homeserver()
13928: for each user. If no $namespace is provided, the default is ids.
13929:
13930: =item *
13931: X<updateclickers()>
13932: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
13933: clicker ID-to-username look-ups in clickers.db on library server.
13934: Permitted actions are add or del (i.e., add or delete). The
13935: clickers.db contains clickerID as keys (escaped), and each corresponding
13936: value is an escaped comma-separated list of usernames (for whom the
13937: library server is the homeserver), who registered that particular ID.
13938: If $critical is true, the update will be sent via &critical, otherwise
13939: &reply() will be used.
13940:
13941: =item *
13942: X<rolesinit()>
13943: B<rolesinit($udom,$username)>: get user privileges.
13944: returns user role, first access and timer interval hashes
13945:
13946: =item *
13947: X<privileged()>
13948: B<privileged($username,$domain)>: returns a true if user has a
13949: privileged and active role (i.e. su or dc), false otherwise.
13950:
13951: =item *
13952: X<getsection()>
13953: B<getsection($udom,$uname,$cname)>: finds the section of student in the
13954: course $cname, return section name/number or '' for "not in course"
13955: and '-1' for "no section"
13956:
13957: =item *
13958: X<userenvironment()>
13959: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
13960: passed in @what from the requested user's environment, returns a hash
13961:
13962: =item *
13963: X<userlog_query()>
13964: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
13965: activity.log file. %filters defines filters applied when parsing the
13966: log file. These can be start or end timestamps, or the type of action
13967: - log to look for Login or Logout events, check for Checkin or
13968: Checkout, role for role selection. The response is in the form
13969: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
13970: escaped strings of the action recorded in the activity.log file.
13971:
13972: =back
13973:
13974: =head2 User Roles
13975:
13976: =over 4
13977:
13978: =item *
13979:
13980: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
13981: returns codes for allowed actions.
13982:
13983: The first argument is required, all others are optional.
13984:
13985: $priv is the privilege being checked.
13986: $uri contains additional information about what is being checked for access (e.g.,
13987: URL, course ID etc.).
13988: $symb is the unique resource instance identifier in a course; if needed,
13989: but not provided, it will be retrieved via a call to &symbread().
13990: $role is the role for which a priv is being checked (only used if priv is evb).
13991: $clientip is the user's IP address (only used when checking for access to portfolio
13992: files).
13993: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
13994: prevents recursive calls to &allowed.
13995:
13996: F: full access
13997: U,I,K: authentication modes (cxx only)
13998: '': forbidden
13999: 1: user needs to choose course
14000: 2: browse allowed
14001: A: passphrase authentication needed
14002: B: access temporarily blocked because of a blocking event in a course.
14003:
14004: =item *
14005:
14006: constructaccess($url,$setpriv) : check for access to construction space URL
14007:
14008: See if the owner domain and name in the URL match those in the
14009: expected environment. If so, return three element list
14010: ($ownername,$ownerdomain,$ownerhome).
14011:
14012: Otherwise return the null string.
14013:
14014: If second argument 'setpriv' is true, it assigns the privileges,
14015: and returns the same three element list, unless the owner has
14016: blocked "ad hoc" Domain Coordinator access to the Author Space,
14017: in which case the null string is returned.
14018:
14019: =item *
14020:
14021: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14022: define a custom role rolename set privileges in format of lonTabs/roles.tab
14023: for system, domain, and course level. $uname and $udom are optional (current
14024: user's username and domain will be used when either of $uname or $udom are absent.
14025:
14026: =item *
14027:
14028: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14029: (rolesplain.tab); plain text explanation of a user role term.
14030: $type is Course (default) or Community.
14031: If $forcedefault evaluates to true, text returned will be default
14032: text for $type. Otherwise, if this is a course, the text returned
14033: will be a custom name for the role (if defined in the course's
14034: environment). If no custom name is defined the default is returned.
14035:
14036: =item *
14037:
14038: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14039: All arguments are optional. Returns a hash of a roles, either for
14040: co-author/assistant author roles for a user's Construction Space
14041: (default), or if $context is 'userroles', roles for the user himself,
14042: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14043: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14044: For each key, value is set to colon-separated start and end times for
14045: the role. If no username and domain are specified, will default to
14046: current user/domain. Types, roles, and roledoms are references to arrays
14047: of role statuses (active, future or previous), roles
14048: (e.g., cc,in, st etc.) and domains of the roles which can be used
14049: to restrict the list of roles reported. If no array ref is
14050: provided for types, will default to return only active roles.
14051:
14052: =item *
14053:
14054: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14055: user: $uname:$udom has a role in the course: $cdom_$cnum.
14056:
14057: Additional optional arguments are: $type (if role checking is to be restricted
14058: to certain user status types -- previous (expired roles), active (currently
14059: available roles) or future (roles available in the future), and
14060: $hideprivileged -- if true will not report course roles for users who
14061: have active Domain Coordinator role in course's domain or in additional
14062: domains (specified in 'Domains to check for privileged users' in course
14063: environment -- set via: Course Settings -> Classlists and staff listing).
14064:
14065: =item *
14066:
14067: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14068: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14069: $possdomains and $possroles are optional array refs -- to domains to check and
14070: roles to check. If $possdomains is not specified, a dump will be done of the
14071: users' roles.db to check for a dc or su role in any domain. This can be
14072: time consuming if &privileged is called repeatedly (e.g., when displaying a
14073: classlist), so in such cases, supplying a $possdomains array is preferred, as
14074: this then allows &privileged_by_domain() to be used, which caches the identity
14075: of privileged users, eliminating the need for repeated calls to &dump().
14076:
14077: =item *
14078:
14079: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14080: where the outer hash keys are domains specified in the $possdomains array ref,
14081: next inner hash keys are privileged roles specified in the $roles array ref,
14082: and the innermost hash contains key = value pairs for username:domain = end:start
14083: for active or future "privileged" users with that role in that domain. To avoid
14084: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14085: innerhash are cached using priv_$role and $dom as the identifiers.
14086:
14087: =back
14088:
14089: =head2 User Modification
14090:
14091: =over 4
14092:
14093: =item *
14094:
14095: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14096: user for the level given by URL. Optional start and end dates (leave empty
14097: string or zero for "no date")
14098:
14099: =item *
14100:
14101: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14102: change a users, password, possible return values are: ok,
14103: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14104: refused
14105:
14106: =item *
14107:
14108: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14109:
14110: =item *
14111:
14112: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14113: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14114:
14115: will update user information (firstname,middlename,lastname,generation,
14116: permanentemail), and if forceid is true, student/employee ID also.
14117: A user's institutional affiliation(s) can also be updated.
14118: User information fields will not be overwritten with empty entries
14119: unless the field is included in the $candelete array reference.
14120: This array is included when a single user is modified via "Manage Users",
14121: or when Autoupdate.pl is run by cron in a domain.
14122:
14123: =item *
14124:
14125: modifystudent
14126:
14127: modify a student's enrollment and identification information.
14128: The course id is resolved based on the current user's environment.
14129: This means the invoking user must be a course coordinator or otherwise
14130: associated with a course.
14131:
14132: This call is essentially a wrapper for lonnet::modifyuser and
14133: lonnet::modify_student_enrollment
14134:
14135: Inputs:
14136:
14137: =over 4
14138:
14139: =item B<$udom> Student's loncapa domain
14140:
14141: =item B<$uname> Student's loncapa login name
14142:
14143: =item B<$uid> Student/Employee ID
14144:
14145: =item B<$umode> Student's authentication mode
14146:
14147: =item B<$upass> Student's password
14148:
14149: =item B<$first> Student's first name
14150:
14151: =item B<$middle> Student's middle name
14152:
14153: =item B<$last> Student's last name
14154:
14155: =item B<$gene> Student's generation
14156:
14157: =item B<$usec> Student's section in course
14158:
14159: =item B<$end> Unix time of the roles expiration
14160:
14161: =item B<$start> Unix time of the roles start date
14162:
14163: =item B<$forceid> If defined, allow $uid to be changed
14164:
14165: =item B<$desiredhome> server to use as home server for student
14166:
14167: =item B<$email> Student's permanent e-mail address
14168:
14169: =item B<$type> Type of enrollment (auto or manual)
14170:
14171: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14172:
14173: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14174:
14175: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14176:
14177: =item B<$context> role change context (shown in User Management Logs display in a course)
14178:
14179: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14180:
14181: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
14182:
14183: =back
14184:
14185: =item *
14186:
14187: modify_student_enrollment
14188:
14189: Change a student's enrollment status in a class. The environment variable
14190: 'role.request.course' must be defined for this function to proceed.
14191:
14192: Inputs:
14193:
14194: =over 4
14195:
14196: =item $udom, student's domain
14197:
14198: =item $uname, student's name
14199:
14200: =item $uid, student's user id
14201:
14202: =item $first, student's first name
14203:
14204: =item $middle
14205:
14206: =item $last
14207:
14208: =item $gene
14209:
14210: =item $usec
14211:
14212: =item $end
14213:
14214: =item $start
14215:
14216: =item $type
14217:
14218: =item $locktype
14219:
14220: =item $cid
14221:
14222: =item $selfenroll
14223:
14224: =item $context
14225:
14226: =item $credits, number of credits student will earn from this class
14227:
14228: =item $instsec, institutional course section code for student
14229:
14230: =back
14231:
14232:
14233: =item *
14234:
14235: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14236: custom role; give a custom role to a user for the level given by URL. Specify
14237: name and domain of role author, and role name
14238:
14239: =item *
14240:
14241: revokerole($udom,$uname,$url,$role) : revoke a role for url
14242:
14243: =item *
14244:
14245: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14246:
14247: =back
14248:
14249: =head2 Course Infomation
14250:
14251: =over 4
14252:
14253: =item *
14254:
14255: coursedescription($courseid,$options) : returns a hash of information about the
14256: specified course id, including all environment settings for the
14257: course, the description of the course will be in the hash under the
14258: key 'description'
14259:
14260: $options is an optional parameter that if supplied is a hash reference that controls
14261: what how this function works. It has the following key/values:
14262:
14263: =over 4
14264:
14265: =item freshen_cache
14266:
14267: If defined, and the environment cache for the course is valid, it is
14268: returned in the returned hash.
14269:
14270: =item one_time
14271:
14272: If defined, the last cache time is set to _now_
14273:
14274: =item user
14275:
14276: If defined, the supplied username is used instead of the current user.
14277:
14278:
14279: =back
14280:
14281: =item *
14282:
14283: resdata($name,$domain,$type,@which) : request for current parameter
14284: setting for a specific $type, where $type is either 'course' or 'user',
14285: @what should be a list of parameters to ask about. This routine caches
14286: answers for 10 minutes.
14287:
14288: =item *
14289:
14290: get_courseresdata($courseid, $domain) : dump the entire course resource
14291: data base, returning a hash that is keyed by the resource name and has
14292: values that are the resource value. I believe that the timestamps and
14293: versions are also returned.
14294:
14295: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
14296: supplemental content area. This routine caches the number of files for
14297: 10 minutes.
14298:
14299: =back
14300:
14301: =head2 Course Modification
14302:
14303: =over 4
14304:
14305: =item *
14306:
14307: writecoursepref($courseid,%prefs) : write preferences (environment
14308: database) for a course
14309:
14310: =item *
14311:
14312: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
14313:
14314: =item *
14315:
14316: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14317:
14318: =item *
14319:
14320: is_course($courseid), is_course($cdom, $cnum)
14321:
14322: Accepts either a combined $courseid (in the form of domain_courseid) or the
14323: two component version $cdom, $cnum. It checks if the specified course exists.
14324:
14325: Returns:
14326: undef if the course doesn't exist, otherwise
14327: in scalar context the combined courseid.
14328: in list context the two components of the course identifier, domain and
14329: courseid.
14330:
14331: =back
14332:
14333: =head2 Resource Subroutines
14334:
14335: =over 4
14336:
14337: =item *
14338:
14339: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14340:
14341: =item *
14342:
14343: repcopy($filename) : subscribes to the requested file, and attempts to
14344: replicate from the owning library server, Might return
14345: 'unavailable', 'not_found', 'forbidden', 'ok', or
14346: 'bad_request', also attempts to grab the metadata for the
14347: resource. Expects the local filesystem pathname
14348: (/home/httpd/html/res/....)
14349:
14350: =back
14351:
14352: =head2 Resource Information
14353:
14354: =over 4
14355:
14356: =item *
14357:
14358: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14359: and returns the value of a variety of different possible values,
14360: $varname should be a request string, and the other parameters can be
14361: used to specify who and what one is asking about. Ordinarily, $cid
14362: does not need to be specified, as it is retrived from
14363: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14364: within lonuserstate::loadmap() when initializing a course, before
14365: $env{'request.course.id'} has been set, so it needs to be provided
14366: in that one case.
14367:
14368: Possible values for $varname are environment.lastname (or other item
14369: from the envirnment hash), user.name (or someother aspect about the
14370: user), resource.0.maxtries (or some other part and parameter of a
14371: resource)
14372:
14373: =item *
14374:
14375: directcondval($number) : get current value of a condition; reads from a state
14376: string
14377:
14378: =item *
14379:
14380: condval($condidx) : value of condition index based on state
14381:
14382: =item *
14383:
14384: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
14385: resource's metadata, $what should be either a specific key, or either
14386: 'keys' (to get a list of possible keys) or 'packages' to get a list of
14387: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
14388:
14389: this function automatically caches all requests
14390:
14391: =item *
14392:
14393: metadata_query($query,$custom,$customshow) : make a metadata query against the
14394: network of library servers; returns file handle of where SQL and regex results
14395: will be stored for query
14396:
14397: =item *
14398:
14399: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
14400: return symbolic list entry (all arguments optional).
14401:
14402: Args: filename is the filename (including path) for the file for which a symb
14403: is required; donotrecurse, if true will prevent calls to allowed() being made
14404: to check access status if more than one resource was found in the bighash
14405: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
14406: a randompick); ignorecachednull, if true will prevent a symb of '' being
14407: returned if $env{$cache_str} is defined as ''; checkforblock if true will
14408: cause possible symbs to be checked to determine if they are subject to content
14409: blocking, if so they will not be included as possible symbs; possibles is a
14410: ref to a hash, which, as a side effect, will be populated with all possible
14411: symbs (content blocking not tested).
14412:
14413: returns the data handle
14414:
14415: =item *
14416:
14417: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
14418: and is a possible symb for the URL in $thisfn, and if is an encrypted
14419: resource that the user accessed using /enc/ returns a 1 on success, 0
14420: on failure, user must be in a course, as it assumes the existence of
14421: the course initial hash, and uses $env('request.course.id'}. The third
14422: arg is an optional reference to a scalar. If this arg is passed in the
14423: call to symbverify, it will be set to 1 if the symb has been set to be
14424: encrypted; otherwise it will be null.
14425:
14426: =item *
14427:
14428: symbclean($symb) : removes versions numbers from a symb, returns the
14429: cleaned symb
14430:
14431: =item *
14432:
14433: is_on_map($uri) : checks if the $uri is somewhere on the current
14434: course map, user must be in a course for it to work.
14435:
14436: =item *
14437:
14438: numval($salt) : return random seed value (addend for rndseed)
14439:
14440: =item *
14441:
14442: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
14443: a random seed, all arguments are optional, if they aren't sent it uses the
14444: environment to derive them. Note: if symb isn't sent and it can't get one
14445: from &symbread it will use the current time as its return value
14446:
14447: =item *
14448:
14449: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
14450: unfakeable, receipt
14451:
14452: =item *
14453:
14454: receipt() : API to ireceipt working off of env values; given out to users
14455:
14456: =item *
14457:
14458: countacc($url) : count the number of accesses to a given URL
14459:
14460: =item *
14461:
14462: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
14463:
14464: =item *
14465:
14466: checkin($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 $tcrsid)
14467:
14468: =item *
14469:
14470: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
14471:
14472: =item *
14473:
14474: devalidate($symb) : devalidate temporary spreadsheet calculations,
14475: forcing spreadsheet to reevaluate the resource scores next time.
14476:
14477: =item *
14478:
14479: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
14480: when viewing in course context.
14481:
14482: input: six args -- filename (decluttered), course number, course domain,
14483: url, symb (if registered) and group (if this is a
14484: group item -- e.g., bulletin board, group page etc.).
14485:
14486: output: array of five scalars --
14487: $cfile -- url for file editing if editable on current server
14488: $home -- homeserver of resource (i.e., for author if published,
14489: or course if uploaded.).
14490: $switchserver -- 1 if server switch will be needed.
14491: $forceedit -- 1 if icon/link should be to go to edit mode
14492: $forceview -- 1 if icon/link should be to go to view mode
14493:
14494: =item *
14495:
14496: is_course_upload($file,$cnum,$cdom)
14497:
14498: Used in course context to determine if current file was uploaded to
14499: the course (i.e., would be found in /userfiles/docs on the course's
14500: homeserver.
14501:
14502: input: 3 args -- filename (decluttered), course number and course domain.
14503: output: boolean -- 1 if file was uploaded.
14504:
14505: =back
14506:
14507: =head2 Storing/Retreiving Data
14508:
14509: =over 4
14510:
14511: =item *
14512:
14513: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
14514: permanently for this url; hashref needs to be given and should be a \%hashname;
14515: the remaining args aren't required and if they aren't passed or are '' they will
14516: be derived from the env (with the exception of $laststore, which is an
14517: optional arg used when a user's submission is stored in grading).
14518: $laststore is $version=$timestamp, where $version is the most recent version
14519: number retrieved for the corresponding $symb in the $namespace db file, and
14520: $timestamp is the timestamp for that transaction (UNIX time).
14521: $laststore is currently only passed when cstore() is called by
14522: structuretags::finalize_storage().
14523:
14524: =item *
14525:
14526: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
14527: but uses critical subroutine
14528:
14529: =item *
14530:
14531: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
14532: all args are optional
14533:
14534: =item *
14535:
14536: dumpstore($namespace,$udom,$uname,$regexp,$range) :
14537: dumps the complete (or key matching regexp) namespace into a hash
14538: ($udom, $uname, $regexp, $range are optional) for a namespace that is
14539: normally &store()ed into
14540:
14541: $range should be either an integer '100' (give me the first 100
14542: matching records)
14543: or be two integers sperated by a - with no spaces
14544: '30-50' (give me the 30th through the 50th matching
14545: records)
14546:
14547:
14548: =item *
14549:
14550: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
14551: replaces a &store() version of data with a replacement set of data
14552: for a particular resource in a namespace passed in the $storehash hash
14553: reference. If $tolog is true, the transaction is logged in the courselog
14554: with an action=PUTSTORE.
14555:
14556: =item *
14557:
14558: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
14559: works very similar to store/cstore, but all data is stored in a
14560: temporary location and can be reset using tmpreset, $storehash should
14561: be a hash reference, returns nothing on success
14562:
14563: =item *
14564:
14565: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
14566: similar to restore, but all data is stored in a temporary location and
14567: can be reset using tmpreset. Returns a hash of values on success,
14568: error string otherwise.
14569:
14570: =item *
14571:
14572: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14573: deltes all keys for $symb form the temporary storage hash.
14574:
14575: =item *
14576:
14577: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14578: reference filled in from namesp ($udom and $uname are optional)
14579:
14580: =item *
14581:
14582: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14583: namesp ($udom and $uname are optional)
14584:
14585: =item *
14586:
14587: dump($namespace,$udom,$uname,$regexp,$range) :
14588: dumps the complete (or key matching regexp) namespace into a hash
14589: ($udom, $uname, $regexp, $range are optional)
14590:
14591: $range should be either an integer '100' (give me the first 100
14592: matching records)
14593: or be two integers sperated by a - with no spaces
14594: '30-50' (give me the 30th through the 50th matching
14595: records)
14596: =item *
14597:
14598: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14599: $store can be a scalar, an array reference, or if the amount to be
14600: incremented is > 1, a hash reference.
14601:
14602: ($udom and $uname are optional)
14603:
14604: =item *
14605:
14606: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14607: ($udom and $uname are optional)
14608:
14609: =item *
14610:
14611: cput($namespace,$storehash,$udom,$uname) : critical put
14612: ($udom and $uname are optional)
14613:
14614: =item *
14615:
14616: newput($namespace,$storehash,$udom,$uname) :
14617:
14618: Attempts to store the items in the $storehash, but only if they don't
14619: currently exist, if this succeeds you can be certain that you have
14620: successfully created a new key value pair in the $namespace db.
14621:
14622:
14623: Args:
14624: $namespace: name of database to store values to
14625: $storehash: hashref to store to the db
14626: $udom: (optional) domain of user containing the db
14627: $uname: (optional) name of user caontaining the db
14628:
14629: Returns:
14630: 'ok' -> succeeded in storing all keys of $storehash
14631: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14632: least <key> already existed in the db (other
14633: requested keys may also already exist)
14634: 'error: <msg>' -> unable to tie the DB or other error occurred
14635: 'con_lost' -> unable to contact request server
14636: 'refused' -> action was not allowed by remote machine
14637:
14638:
14639: =item *
14640:
14641: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14642: reference filled in from namesp (encrypts the return communication)
14643: ($udom and $uname are optional)
14644:
14645: =item *
14646:
14647: log($udom,$name,$home,$message) : write to permanent log for user; use
14648: critical subroutine
14649:
14650: =item *
14651:
14652: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14653: array reference filled in from namespace found in domain level on either
14654: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14655:
14656: =item *
14657:
14658: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14659: domain level either on specified domain server ($uhome) or primary domain
14660: server ($udom and $uhome are optional)
14661:
14662: =item *
14663:
14664: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14665: for: authentication, language, quotas, timezone, date locale, and portal URL in
14666: the target domain.
14667:
14668: May also include additional key => value pairs for the following groups:
14669:
14670: =over
14671:
14672: =item
14673: disk quotas (MB allocated by default to portfolios and authoring spaces).
14674:
14675: =over
14676:
14677: =item defaultquota, authorquota
14678:
14679: =back
14680:
14681: =item
14682: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14683: portfolio for users).
14684:
14685: =over
14686:
14687: =item
14688: aboutme, blog, webdav, portfolio
14689:
14690: =back
14691:
14692: =item
14693: requestcourses: ability to request courses, and how requests are processed.
14694:
14695: =over
14696:
14697: =item
14698: official, unofficial, community, textbook, placement
14699:
14700: =back
14701:
14702: =item
14703: inststatus: types of institutional affiliation, and order in which they are displayed.
14704:
14705: =over
14706:
14707: =item
14708: inststatustypes, inststatusorder, inststatusguest
14709:
14710: =back
14711:
14712: =item
14713: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14714: for course's uploaded content.
14715:
14716: =over
14717:
14718: =item
14719: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
14720: communityquota, textbookquota, placementquota
14721:
14722: =back
14723:
14724: =item
14725: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
14726: on your servers.
14727:
14728: =over
14729:
14730: =item
14731: remotesessions, hostedsessions
14732:
14733: =back
14734:
14735: =back
14736:
14737: In cases where a domain coordinator has never used the "Set Domain Configuration"
14738: utility to create a configuration.db file on a domain's primary library server
14739: only the following domain defaults: auth_def, auth_arg_def, lang_def
14740: -- corresponding values are authentication type (internal, krb4, krb5,
14741: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
14742: will be available. Values are retrieved from cache (if current), unless the
14743: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
14744: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
14745:
14746: Typical usage:
14747:
14748: %domdefaults = &get_domain_defaults($target_domain);
14749:
14750: =back
14751:
14752: =head2 Network Status Functions
14753:
14754: =over 4
14755:
14756: =item *
14757:
14758: dirlist() : return directory list based on URI (first arg).
14759:
14760: Inputs: 1 required, 5 optional.
14761:
14762: =over
14763:
14764: =item
14765: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
14766:
14767: =item
14768: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
14769:
14770: =item
14771: $username - username of user/course to be listed. Extracted from $uri if absent.
14772:
14773: =item
14774: $getpropath - boolean: 1 if prepend path using &propath().
14775:
14776: =item
14777: $getuserdir - boolean: 1 if prepend path for "userfiles".
14778:
14779: =item
14780: $alternateRoot - path to prepend in place of path from $uri.
14781:
14782: =back
14783:
14784: Returns: Array of up to two items.
14785:
14786: =over
14787:
14788: a reference to an array of files/subdirectories
14789:
14790: =over
14791:
14792: Each element in the array of files/subdirectories is a & separated list of
14793: item name and the result of running stat on the item. If dirlist was requested
14794: for a file instead of a directory, the item name will be ''. For a directory
14795: listing, if the item is a metadata file, the element will end &N&M
14796: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14797: default copyright set (1).
14798:
14799: =back
14800:
14801: a scalar containing error condition (if encountered).
14802:
14803: =over
14804:
14805: =item
14806: no_host (no homeserver identified for $username:$domain).
14807:
14808: =item
14809: no_such_host (server contacted for listing not identified as valid host).
14810:
14811: =item
14812: con_lost (connection to remote server failed).
14813:
14814: =item
14815: refused (invalid $username:$domain received on lond side).
14816:
14817: =item
14818: no_such_dir (directory at specified path on lond side does not exist).
14819:
14820: =item
14821: empty (directory at specified path on lond side is empty).
14822:
14823: =over
14824:
14825: This is currently not encountered because the &ls3, &ls2,
14826: &ls (_handler) routines on the lond side do not filter out
14827: . and .. from a directory listing.
14828:
14829: =back
14830:
14831: =back
14832:
14833: =back
14834:
14835: =item *
14836:
14837: spareserver() : find server with least workload from spare.tab
14838:
14839:
14840: =item *
14841:
14842: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
14843: if there is no corresponding loncapa host.
14844:
14845: =back
14846:
14847:
14848: =head2 Apache Request
14849:
14850: =over 4
14851:
14852: =item *
14853:
14854: ssi($url,%hash) : server side include, does a complete request cycle on url to
14855: localhost, posts hash
14856:
14857: =back
14858:
14859: =head2 Data to String to Data
14860:
14861: =over 4
14862:
14863: =item *
14864:
14865: hash2str(%hash) : convert a hash into a string complete with escaping and '='
14866: and '&' separators, supports elements that are arrayrefs and hashrefs
14867:
14868: =item *
14869:
14870: hashref2str($hashref) : convert a hashref into a string complete with
14871: escaping and '=' and '&' separators, supports elements that are
14872: arrayrefs and hashrefs
14873:
14874: =item *
14875:
14876: arrayref2str($arrayref) : convert an arrayref into a string complete
14877: with escaping and '&' separators, supports elements that are arrayrefs
14878: and hashrefs
14879:
14880: =item *
14881:
14882: str2hash($string) : convert string to hash using unescaping and
14883: splitting on '=' and '&', supports elements that are arrayrefs and
14884: hashrefs
14885:
14886: =item *
14887:
14888: str2array($string) : convert string to hash using unescaping and
14889: splitting on '&', supports elements that are arrayrefs and hashrefs
14890:
14891: =back
14892:
14893: =head2 Logging Routines
14894:
14895:
14896: These routines allow one to make log messages in the lonnet.log and
14897: lonnet.perm logfiles.
14898:
14899: =over 4
14900:
14901: =item *
14902:
14903: logtouch() : make sure the logfile, lonnet.log, exists
14904:
14905: =item *
14906:
14907: logthis() : append message to the normal lonnet.log file, it gets
14908: preiodically rolled over and deleted.
14909:
14910: =item *
14911:
14912: logperm() : append a permanent message to lonnet.perm.log, this log
14913: file never gets deleted by any automated portion of the system, only
14914: messages of critical importance should go in here.
14915:
14916:
14917: =back
14918:
14919: =head2 General File Helper Routines
14920:
14921: =over 4
14922:
14923: =item *
14924:
14925: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
14926: (a) files in /uploaded
14927: (i) If a local copy of the file exists -
14928: compares modification date of local copy with last-modified date for
14929: definitive version stored on home server for course. If local copy is
14930: stale, requests a new version from the home server and stores it.
14931: If the original has been removed from the home server, then local copy
14932: is unlinked.
14933: (ii) If local copy does not exist -
14934: requests the file from the home server and stores it.
14935:
14936: If $caller is 'uploadrep':
14937: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
14938: for request for files originally uploaded via DOCS.
14939: - returns 'ok' if fresh local copy now available, -1 otherwise.
14940:
14941: Otherwise:
14942: This indicates a call from the content generation phase of the request.
14943: - returns the entire contents of the file or -1.
14944:
14945: (b) files in /res
14946: - returns the entire contents of a file or -1;
14947: it properly subscribes to and replicates the file if neccessary.
14948:
14949:
14950: =item *
14951:
14952: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
14953: reference
14954:
14955: returns either a stat() list of data about the file or an empty list
14956: if the file doesn't exist or couldn't find out about it (connection
14957: problems or user unknown)
14958:
14959: =item *
14960:
14961: filelocation($dir,$file) : returns file system location of a file
14962: based on URI; meant to be "fairly clean" absolute reference, $dir is a
14963: directory that relative $file lookups are to looked in ($dir of /a/dir
14964: and a file of ../bob will become /a/bob)
14965:
14966: =item *
14967:
14968: hreflocation($dir,$file) : returns file system location or a URL; same as
14969: filelocation except for hrefs
14970:
14971: =item *
14972:
14973: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
14974: also removes beginning /home/httpd/html unless /priv/ follows it.
14975:
14976: =back
14977:
14978: =head2 Usererfile file routines (/uploaded*)
14979:
14980: =over 4
14981:
14982: =item *
14983:
14984: userfileupload(): main rotine for putting a file in a user or course's
14985: filespace, arguments are,
14986:
14987: formname - required - this is the name of the element in $env where the
14988: filename, and the contents of the file to create/modifed exist
14989: the filename is in $env{'form.'.$formname.'.filename'} and the
14990: contents of the file is located in $env{'form.'.$formname}
14991: context - if coursedoc, store the file in the course of the active role
14992: of the current user;
14993: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
14994: if 'canceloverwrite': delete file in tmp/overwrites directory
14995: subdir - required - subdirectory to put the file in under ../userfiles/
14996: if undefined, it will be placed in "unknown"
14997:
14998: (This routine calls clean_filename() to remove any dangerous
14999: characters from the filename, and then calls finuserfileupload() to
15000: complete the transaction)
15001:
15002: returns either the url of the uploaded file (/uploaded/....) if successful
15003: and /adm/notfound.html if unsuccessful
15004:
15005: =item *
15006:
15007: clean_filename(): routine for cleaing a filename up for storage in
15008: userfile space, argument is:
15009:
15010: filename - proposed filename
15011:
15012: returns: the new clean filename
15013:
15014: =item *
15015:
15016: finishuserfileupload(): routine that creates and sends the file to
15017: userspace, probably shouldn't be called directly
15018:
15019: docuname: username or courseid of destination for the file
15020: docudom: domain of user/course of destination for the file
15021: formname: same as for userfileupload()
15022: fname: filename (including subdirectories) for the file
15023: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15024: allfiles: reference to hash used to store objects found by parser
15025: codebase: reference to hash used for codebases of java objects found by parser
15026: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15027: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15028: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15029: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15030: context: if 'overwrite', will move the uploaded file from its temporary location to
15031: userfiles to facilitate overwriting a previously uploaded file with same name.
15032: mimetype: reference to scalar to accommodate mime type determined
15033: from File::MMagic if $parser = parse.
15034:
15035: returns either the url of the uploaded file (/uploaded/....) if successful
15036: and /adm/notfound.html if unsuccessful (or an error message if context
15037: was 'overwrite').
15038:
15039:
15040: =item *
15041:
15042: renameuserfile(): renames an existing userfile to a new name
15043:
15044: Args:
15045: docuname: username or courseid of destination for the file
15046: docudom: domain of user/course of destination for the file
15047: old: current file name (including any subdirs under userfiles)
15048: new: desired file name (including any subdirs under userfiles)
15049:
15050: =item *
15051:
15052: mkdiruserfile(): creates a directory is a userfiles dir
15053:
15054: Args:
15055: docuname: username or courseid of destination for the file
15056: docudom: domain of user/course of destination for the file
15057: dir: dir to create (including any subdirs under userfiles)
15058:
15059: =item *
15060:
15061: removeuserfile(): removes a file that exists in userfiles
15062:
15063: Args:
15064: docuname: username or courseid of destination for the file
15065: docudom: domain of user/course of destination for the file
15066: fname: filname to delete (including any subdirs under userfiles)
15067:
15068: =item *
15069:
15070: removeuploadedurl(): convience function for removeuserfile()
15071:
15072: Args:
15073: url: a full /uploaded/... url to delete
15074:
15075: =item *
15076:
15077: get_portfile_permissions():
15078: Args:
15079: domain: domain of user or course contain the portfolio files
15080: user: name of user or num of course contain the portfolio files
15081: Returns:
15082: hashref of a dump of the proper file_permissions.db
15083:
15084:
15085: =item *
15086:
15087: get_access_controls():
15088:
15089: Args:
15090: current_permissions: the hash ref returned from get_portfile_permissions()
15091: group: (optional) the group you want the files associated with
15092: file: (optional) the file you want access info on
15093:
15094: Returns:
15095: a hash (keys are file names) of hashes containing
15096: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15097: values are XML containing access control settings (see below)
15098:
15099: Internal notes:
15100:
15101: access controls are stored in file_permissions.db as key=value pairs.
15102: key -> path to file/file_name\0uniqueID:scope_end_start
15103: where scope -> public,guest,course,group,domains or users.
15104: end -> UNIX time for end of access (0 -> no end date)
15105: start -> UNIX time for start of access
15106:
15107: value -> XML description of access control
15108: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15109: <start></start>
15110: <end></end>
15111:
15112: <password></password> for scope type = guest
15113:
15114: <domain></domain> for scope type = course or group
15115: <number></number>
15116: <roles id="">
15117: <role></role>
15118: <access></access>
15119: <section></section>
15120: <group></group>
15121: </roles>
15122:
15123: <dom></dom> for scope type = domains
15124:
15125: <users> for scope type = users
15126: <user>
15127: <uname></uname>
15128: <udom></udom>
15129: </user>
15130: </users>
15131: </scope>
15132:
15133: Access data is also aggregated for each file in an additional key=value pair:
15134: key -> path to file/file_name\0accesscontrol
15135: value -> reference to hash
15136: hash contains key = value pairs
15137: where key = uniqueID:scope_end_start
15138: value = UNIX time record was last updated
15139:
15140: Used to improve speed of look-ups of access controls for each file.
15141:
15142: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15143:
15144: =item *
15145:
15146: modify_access_controls():
15147:
15148: Modifies access controls for a portfolio file
15149: Args
15150: 1. file name
15151: 2. reference to hash of required changes,
15152: 3. domain
15153: 4. username
15154: where domain,username are the domain of the portfolio owner
15155: (either a user or a course)
15156:
15157: Returns:
15158: 1. result of additions or updates ('ok' or 'error', with error message).
15159: 2. result of deletions ('ok' or 'error', with error message).
15160: 3. reference to hash of any new or updated access controls.
15161: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15162: key = integer (inbound ID)
15163: value = uniqueID
15164:
15165: =item *
15166:
15167: get_timebased_id():
15168:
15169: Attempts to get a unique timestamp-based suffix for use with items added to a
15170: course via the Course Editor (e.g., folders, composite pages,
15171: group bulletin boards).
15172:
15173: Args: (first three required; six others optional)
15174:
15175: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15176: docssequence, or name of group
15177:
15178: 2. keyid (alphanumeric): name of temporary locking key in hash,
15179: e.g., num, boardids
15180:
15181: 3. namespace: name of gdbm file used to store suffixes already assigned;
15182: file will be named nohist_namespace.db
15183:
15184: 4. cdom: domain of course; default is current course domain from %env
15185:
15186: 5. cnum: course number; default is current course number from %env
15187:
15188: 6. idtype: set to concat if an additional digit is to be appended to the
15189: unix timestamp to form the suffix, if the plain timestamp is already
15190: in use. Default is to not do this, but simply increment the unix
15191: timestamp by 1 until a unique key is obtained.
15192:
15193: 7. who: holder of locking key; defaults to user:domain for user.
15194:
15195: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15196: retrying); default is 3.
15197:
15198: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15199:
15200: Returns:
15201:
15202: 1. suffix obtained (numeric)
15203:
15204: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15205:
15206: 3. error: contains (localized) error message if an error occurred.
15207:
15208:
15209: =back
15210:
15211: =head2 HTTP Helper Routines
15212:
15213: =over 4
15214:
15215: =item *
15216:
15217: escape() : unpack non-word characters into CGI-compatible hex codes
15218:
15219: =item *
15220:
15221: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15222:
15223: =back
15224:
15225: =head1 PRIVATE SUBROUTINES
15226:
15227: =head2 Underlying communication routines (Shouldn't call)
15228:
15229: =over 4
15230:
15231: =item *
15232:
15233: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15234:
15235: =item *
15236:
15237: reply() : uses subreply to send a message to remote machine, logs all failures
15238:
15239: =item *
15240:
15241: critical() : passes a critical message to another server; if cannot
15242: get through then place message in connection buffer directory and
15243: returns con_delayed, if incapable of saving message, returns
15244: con_failed
15245:
15246: =item *
15247:
15248: reconlonc() : tries to reconnect lonc client processes.
15249:
15250: =back
15251:
15252: =head2 Resource Access Logging
15253:
15254: =over 4
15255:
15256: =item *
15257:
15258: flushcourselogs() : flush (save) buffer logs and access logs
15259:
15260: =item *
15261:
15262: courselog($what) : save message for course in hash
15263:
15264: =item *
15265:
15266: courseacclog($what) : save message for course using &courselog(). Perform
15267: special processing for specific resource types (problems, exams, quizzes, etc).
15268:
15269: =item *
15270:
15271: goodbye() : flush course logs and log shutting down; it is called in srm.conf
15272: as a PerlChildExitHandler
15273:
15274: =back
15275:
15276: =head2 Other
15277:
15278: =over 4
15279:
15280: =item *
15281:
15282: symblist($mapname,%newhash) : update symbolic storage links
15283:
15284: =back
15285:
15286: =cut
15287:
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