1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1388 2018/11/01 18:20:40 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 HTTP::Date;
75: use Image::Magick;
76:
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
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 ($lonhost,$hostname,$context) = @_;
234: return if ($lonhost eq '');
235: if ($hostname eq '') {
236: $hostname = &hostname($lonhost);
237: }
238: return if ($hostname eq '');
239: my ($rep,$uselocal);
240: if ($context eq 'install') {
241: $uselocal = 1;
242: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
243: $uselocal = 1;
244: }
245: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
246: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
247: if ($distro eq '') {
248: $uselocal = 0;
249: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
250: if ($1 < 6) {
251: $uselocal = 0;
252: }
253: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
254: if ($1 < 12) {
255: $uselocal = 0;
256: }
257: }
258: }
259: if ($uselocal) {
260: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
261: } else {
262: $rep=&reply('servercerts',$lonhost);
263: }
264: my ($result,%returnhash);
265: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
266: ($rep eq 'unknown_cmd')) {
267: $result = $rep;
268: } else {
269: $result = 'ok';
270: my @pairs=split(/\&/,$rep);
271: foreach my $item (@pairs) {
272: my ($key,$value)=split(/=/,$item,2);
273: my $what = &unescape($key);
274: $returnhash{$what}=&thaw_unescape($value);
275: }
276: }
277: return ($result,\%returnhash);
278: }
279:
280: sub get_server_loncaparev {
281: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
282: if (defined($lonhost)) {
283: if (!defined(&hostname($lonhost))) {
284: undef($lonhost);
285: }
286: }
287: if (!defined($lonhost)) {
288: if (defined(&domain($dom,'primary'))) {
289: $lonhost=&domain($dom,'primary');
290: if ($lonhost eq 'no_host') {
291: undef($lonhost);
292: }
293: }
294: }
295: if (defined($lonhost)) {
296: my $cachetime = 12*3600;
297: if (!$ignore_cache) {
298: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
299: if (defined($cached)) {
300: return $loncaparev;
301: }
302: }
303: my ($answer,$loncaparev);
304: my @ids=¤t_machine_ids();
305: if (grep(/^\Q$lonhost\E$/,@ids)) {
306: $answer = $perlvar{'lonVersion'};
307: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
308: $loncaparev = $1;
309: }
310: } else {
311: $answer = &reply('serverloncaparev',$lonhost);
312: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
313: if ($caller eq 'loncron') {
314: my $protocol = $protocol{$lonhost};
315: $protocol = 'http' if ($protocol ne 'https');
316: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
317: my $request=new HTTP::Request('GET',$url);
318: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
319: unless ($response->is_error()) {
320: my $content = $response->content;
321: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
322: $loncaparev = $1;
323: }
324: }
325: } else {
326: $loncaparev = $loncaparevs{$lonhost};
327: }
328: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
329: $loncaparev = $1;
330: }
331: }
332: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
333: }
334: }
335:
336: sub get_server_homeID {
337: my ($hostname,$ignore_cache,$caller) = @_;
338: unless ($ignore_cache) {
339: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
340: if (defined($cached)) {
341: return $serverhomeID;
342: }
343: }
344: my $cachetime = 12*3600;
345: my $serverhomeID;
346: if ($caller eq 'loncron') {
347: my @machine_ids = &machine_ids($hostname);
348: foreach my $id (@machine_ids) {
349: my $response = &reply('serverhomeID',$id);
350: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
351: $serverhomeID = $response;
352: last;
353: }
354: }
355: if ($serverhomeID eq '') {
356: $serverhomeID = $machine_ids[-1];
357: }
358: } else {
359: $serverhomeID = $serverhomeIDs{$hostname};
360: }
361: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
362: }
363:
364: sub get_remote_globals {
365: my ($lonhost,$whathash,$ignore_cache) = @_;
366: my ($result,%returnhash,%whatneeded);
367: if (ref($whathash) eq 'HASH') {
368: foreach my $what (sort(keys(%{$whathash}))) {
369: my $hashid = $lonhost.'-'.$what;
370: my ($response,$cached);
371: unless ($ignore_cache) {
372: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
373: }
374: if (defined($cached)) {
375: $returnhash{$what} = $response;
376: } else {
377: $whatneeded{$what} = 1;
378: }
379: }
380: if (keys(%whatneeded) == 0) {
381: $result = 'ok';
382: } else {
383: my $requested = &freeze_escape(\%whatneeded);
384: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
385: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
386: ($rep eq 'unknown_cmd')) {
387: $result = $rep;
388: } else {
389: $result = 'ok';
390: my @pairs=split(/\&/,$rep);
391: foreach my $item (@pairs) {
392: my ($key,$value)=split(/=/,$item,2);
393: my $what = &unescape($key);
394: my $hashid = $lonhost.'-'.$what;
395: $returnhash{$what}=&thaw_unescape($value);
396: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
397: }
398: }
399: }
400: }
401: return ($result,\%returnhash);
402: }
403:
404: sub remote_devalidate_cache {
405: my ($lonhost,$cachekeys) = @_;
406: my $items;
407: return unless (ref($cachekeys) eq 'ARRAY');
408: my $cachestr = join('&',@{$cachekeys});
409: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
410: return $response;
411: }
412:
413: # -------------------------------------------------- Non-critical communication
414: sub subreply {
415: my ($cmd,$server)=@_;
416: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
417: #
418: # With loncnew process trimming, there's a timing hole between lonc server
419: # process exit and the master server picking up the listen on the AF_UNIX
420: # socket. In that time interval, a lock file will exist:
421:
422: my $lockfile=$peerfile.".lock";
423: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
424: sleep(0.1);
425: }
426: # At this point, either a loncnew parent is listening or an old lonc
427: # or loncnew child is listening so we can connect or everything's dead.
428: #
429: # We'll give the connection a few tries before abandoning it. If
430: # connection is not possible, we'll con_lost back to the client.
431: #
432: my $client;
433: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
434: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
435: Type => SOCK_STREAM,
436: Timeout => 10);
437: if ($client) {
438: last; # Connected!
439: } else {
440: &create_connection(&hostname($server),$server);
441: }
442: sleep(0.1); # Try again later if failed connection.
443: }
444: my $answer;
445: if ($client) {
446: print $client "sethost:$server:$cmd\n";
447: $answer=<$client>;
448: if (!$answer) { $answer="con_lost"; }
449: chomp($answer);
450: } else {
451: $answer = 'con_lost'; # Failed connection.
452: }
453: return $answer;
454: }
455:
456: sub reply {
457: my ($cmd,$server)=@_;
458: unless (defined(&hostname($server))) { return 'no_such_host'; }
459: my $answer=subreply($cmd,$server);
460: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
461: &logthis("<font color=\"blue\">WARNING:".
462: " $cmd to $server returned $answer</font>");
463: }
464: return $answer;
465: }
466:
467: # ----------------------------------------------------------- Send USR1 to lonc
468:
469: sub reconlonc {
470: my ($lonid) = @_;
471: if ($lonid) {
472: my $hostname = &hostname($lonid);
473: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
474: if ($hostname && -e $peerfile) {
475: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
476: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
477: Type => SOCK_STREAM,
478: Timeout => 10);
479: if ($client) {
480: print $client ("reset_retries\n");
481: my $answer=<$client>;
482: #reset just this one.
483: }
484: }
485: return;
486: }
487:
488: &logthis("Trying to reconnect lonc");
489: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
490: if (open(my $fh,"<",$loncfile)) {
491: my $loncpid=<$fh>;
492: chomp($loncpid);
493: if (kill 0 => $loncpid) {
494: &logthis("lonc at pid $loncpid responding, sending USR1");
495: kill USR1 => $loncpid;
496: sleep 1;
497: } else {
498: &logthis(
499: "<font color=\"blue\">WARNING:".
500: " lonc at pid $loncpid not responding, giving up</font>");
501: }
502: } else {
503: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
504: }
505: }
506:
507: # ------------------------------------------------------ Critical communication
508:
509: sub critical {
510: my ($cmd,$server)=@_;
511: unless (&hostname($server)) {
512: &logthis("<font color=\"blue\">WARNING:".
513: " Critical message to unknown server ($server)</font>");
514: return 'no_such_host';
515: }
516: my $answer=reply($cmd,$server);
517: if ($answer eq 'con_lost') {
518: &reconlonc($server);
519: my $answer=reply($cmd,$server);
520: if ($answer eq 'con_lost') {
521: my $now=time;
522: my $middlename=$cmd;
523: $middlename=substr($middlename,0,16);
524: $middlename=~s/\W//g;
525: my $dfilename=
526: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
527: $dumpcount++;
528: {
529: my $dfh;
530: if (open($dfh,">",$dfilename)) {
531: print $dfh "$cmd\n";
532: close($dfh);
533: }
534: }
535: sleep 1;
536: my $wcmd='';
537: {
538: my $dfh;
539: if (open($dfh,"<",$dfilename)) {
540: $wcmd=<$dfh>;
541: close($dfh);
542: }
543: }
544: chomp($wcmd);
545: if ($wcmd eq $cmd) {
546: &logthis("<font color=\"blue\">WARNING: ".
547: "Connection buffer $dfilename: $cmd</font>");
548: &logperm("D:$server:$cmd");
549: return 'con_delayed';
550: } else {
551: &logthis("<font color=\"red\">CRITICAL:"
552: ." Critical connection failed: $server $cmd</font>");
553: &logperm("F:$server:$cmd");
554: return 'con_failed';
555: }
556: }
557: }
558: return $answer;
559: }
560:
561: # ------------------------------------------- check if return value is an error
562:
563: sub error {
564: my ($result) = @_;
565: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
566: if ($2 == 2) { return undef; }
567: return $1;
568: }
569: return undef;
570: }
571:
572: sub convert_and_load_session_env {
573: my ($lonidsdir,$handle)=@_;
574: my @profile;
575: {
576: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
577: if (!$opened) {
578: return 0;
579: }
580: flock($idf,LOCK_SH);
581: @profile=<$idf>;
582: close($idf);
583: }
584: my %temp_env;
585: foreach my $line (@profile) {
586: if ($line !~ m/=/) {
587: return 0;
588: }
589: chomp($line);
590: my ($envname,$envvalue)=split(/=/,$line,2);
591: $temp_env{&unescape($envname)} = &unescape($envvalue);
592: }
593: unlink("$lonidsdir/$handle.id");
594: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
595: 0640)) {
596: %disk_env = %temp_env;
597: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
598: untie(%disk_env);
599: }
600: return 1;
601: }
602:
603: # ------------------------------------------- Transfer profile into environment
604: my $env_loaded;
605: sub transfer_profile_to_env {
606: my ($lonidsdir,$handle,$force_transfer) = @_;
607: if (!$force_transfer && $env_loaded) { return; }
608:
609: if (!defined($lonidsdir)) {
610: $lonidsdir = $perlvar{'lonIDsDir'};
611: }
612: if (!defined($handle)) {
613: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
614: }
615:
616: my $convert;
617: {
618: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
619: if (!$opened) {
620: return;
621: }
622: flock($idf,LOCK_SH);
623: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
624: &GDBM_READER(),0640)) {
625: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
626: untie(%disk_env);
627: } else {
628: $convert = 1;
629: }
630: }
631: if ($convert) {
632: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
633: &logthis("Failed to load session, or convert session.");
634: }
635: }
636:
637: my %remove;
638: while ( my $envname = each(%env) ) {
639: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
640: if ($time < time-300) {
641: $remove{$key}++;
642: }
643: }
644: }
645:
646: $env{'user.environment'} = "$lonidsdir/$handle.id";
647: $env_loaded=1;
648: foreach my $expired_key (keys(%remove)) {
649: &delenv($expired_key);
650: }
651: }
652:
653: # ---------------------------------------------------- Check for valid session
654: sub check_for_valid_session {
655: my ($r,$name,$userhashref,$domref) = @_;
656: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
657: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
658: if ($name eq 'lonDAV') {
659: $lonidsdir=$r->dir_config('lonDAVsessDir');
660: } else {
661: $lonidsdir=$r->dir_config('lonIDsDir');
662: if ($name eq '') {
663: $name = 'lonID';
664: }
665: }
666: if ($name eq 'lonID') {
667: $secure = 'lonSID';
668: $linkname = 'lonLinkID';
669: $pubname = 'lonPubID';
670: if (exists($cookies{$secure})) {
671: $lonid=$cookies{$secure};
672: } elsif (exists($cookies{$name})) {
673: $lonid=$cookies{$name};
674: } elsif (exists($cookies{$linkname})) {
675: $lonid=$cookies{$linkname};
676: } elsif (exists($cookies{$pubname})) {
677: $lonid=$cookies{$pubname};
678: }
679: } else {
680: $lonid=$cookies{$name};
681: }
682: return undef if (!$lonid);
683:
684: my $handle=&LONCAPA::clean_handle($lonid->value);
685: if (-l "$lonidsdir/$handle.id") {
686: my $link = readlink("$lonidsdir/$handle.id");
687: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
688: $handle = $1;
689: }
690: }
691: if (!-e "$lonidsdir/$handle.id") {
692: if ((ref($domref)) && ($name eq 'lonID') &&
693: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
694: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
695: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
696: $$domref = $possudom;
697: }
698: }
699: return undef;
700: }
701:
702: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
703: return undef if (!$opened);
704:
705: flock($idf,LOCK_SH);
706: my %disk_env;
707: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
708: &GDBM_READER(),0640)) {
709: return undef;
710: }
711:
712: if (!defined($disk_env{'user.name'})
713: || !defined($disk_env{'user.domain'})) {
714: return undef;
715: }
716:
717: if (ref($userhashref) eq 'HASH') {
718: $userhashref->{'name'} = $disk_env{'user.name'};
719: $userhashref->{'domain'} = $disk_env{'user.domain'};
720: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
721: if ($userhashref->{'lti'}) {
722: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
723: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
724: }
725: }
726:
727: return $handle;
728: }
729:
730: sub timed_flock {
731: my ($file,$lock_type) = @_;
732: my $failed=0;
733: eval {
734: local $SIG{__DIE__}='DEFAULT';
735: local $SIG{ALRM}=sub {
736: $failed=1;
737: die("failed lock");
738: };
739: alarm(13);
740: flock($file,$lock_type);
741: alarm(0);
742: };
743: if ($failed) {
744: return undef;
745: } else {
746: return 1;
747: }
748: }
749:
750: # ---------------------------------------------------------- Append Environment
751:
752: sub appenv {
753: my ($newenv,$roles) = @_;
754: if (ref($newenv) eq 'HASH') {
755: foreach my $key (keys(%{$newenv})) {
756: my $refused = 0;
757: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
758: $refused = 1;
759: if (ref($roles) eq 'ARRAY') {
760: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
761: if (grep(/^\Q$role\E$/,@{$roles})) {
762: $refused = 0;
763: }
764: }
765: }
766: if ($refused) {
767: &logthis("<font color=\"blue\">WARNING: ".
768: "Attempt to modify environment ".$key." to ".$newenv->{$key}
769: .'</font>');
770: delete($newenv->{$key});
771: } else {
772: $env{$key}=$newenv->{$key};
773: }
774: }
775: my $lonids = $perlvar{'lonIDsDir'};
776: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
777: my $opened = open(my $env_file,'+<',$env{'user.environment'});
778: if ($opened
779: && &timed_flock($env_file,LOCK_EX)
780: &&
781: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
782: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
783: while (my ($key,$value) = each(%{$newenv})) {
784: $disk_env{$key} = $value;
785: }
786: untie(%disk_env);
787: }
788: }
789: }
790: return 'ok';
791: }
792: # ----------------------------------------------------- Delete from Environment
793:
794: sub delenv {
795: my ($delthis,$regexp,$roles) = @_;
796: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
797: my $refused = 1;
798: if (ref($roles) eq 'ARRAY') {
799: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
800: if (grep(/^\Q$role\E$/,@{$roles})) {
801: $refused = 0;
802: }
803: }
804: if ($refused) {
805: &logthis("<font color=\"blue\">WARNING: ".
806: "Attempt to delete from environment ".$delthis);
807: return 'error';
808: }
809: }
810: my $opened = open(my $env_file,'+<',$env{'user.environment'});
811: if ($opened
812: && &timed_flock($env_file,LOCK_EX)
813: &&
814: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
815: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
816: foreach my $key (keys(%disk_env)) {
817: if ($regexp) {
818: if ($key=~/^$delthis/) {
819: delete($env{$key});
820: delete($disk_env{$key});
821: }
822: } else {
823: if ($key=~/^\Q$delthis\E/) {
824: delete($env{$key});
825: delete($disk_env{$key});
826: }
827: }
828: }
829: untie(%disk_env);
830: }
831: return 'ok';
832: }
833:
834: sub get_env_multiple {
835: my ($name) = @_;
836: my @values;
837: if (defined($env{$name})) {
838: # exists is it an array
839: if (ref($env{$name})) {
840: @values=@{ $env{$name} };
841: } else {
842: $values[0]=$env{$name};
843: }
844: }
845: return(@values);
846: }
847:
848: # ------------------------------------------------------------------- Locking
849:
850: sub set_lock {
851: my ($text)=@_;
852: $locknum++;
853: my $id=$$.'-'.$locknum;
854: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
855: 'session.lock.'.$id => $text});
856: return $id;
857: }
858:
859: sub get_locks {
860: my $num=0;
861: my %texts=();
862: foreach my $lock (split(/\,/,$env{'session.locks'})) {
863: if ($lock=~/\w/) {
864: $num++;
865: $texts{$lock}=$env{'session.lock.'.$lock};
866: }
867: }
868: return ($num,%texts);
869: }
870:
871: sub remove_lock {
872: my ($id)=@_;
873: my $newlocks='';
874: foreach my $lock (split(/\,/,$env{'session.locks'})) {
875: if (($lock=~/\w/) && ($lock ne $id)) {
876: $newlocks.=','.$lock;
877: }
878: }
879: &appenv({'session.locks' => $newlocks});
880: &delenv('session.lock.'.$id);
881: }
882:
883: sub remove_all_locks {
884: my $activelocks=$env{'session.locks'};
885: foreach my $lock (split(/\,/,$env{'session.locks'})) {
886: if ($lock=~/\w/) {
887: &remove_lock($lock);
888: }
889: }
890: }
891:
892:
893: # ------------------------------------------ Find out current server userload
894: sub userload {
895: my $numusers=0;
896: {
897: opendir(LONIDS,$perlvar{'lonIDsDir'});
898: my $filename;
899: my $curtime=time;
900: while ($filename=readdir(LONIDS)) {
901: next if ($filename eq '.' || $filename eq '..');
902: next if ($filename =~ /publicuser_\d+\.id/);
903: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
904: if ($curtime-$mtime < 1800) { $numusers++; }
905: }
906: closedir(LONIDS);
907: }
908: my $userloadpercent=0;
909: my $maxuserload=$perlvar{'lonUserLoadLim'};
910: if ($maxuserload) {
911: $userloadpercent=100*$numusers/$maxuserload;
912: }
913: $userloadpercent=sprintf("%.2f",$userloadpercent);
914: return $userloadpercent;
915: }
916:
917: # ------------------------------ Find server with least workload from spare.tab
918:
919: sub spareserver {
920: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
921: my $spare_server;
922: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
923: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
924: : $userloadpercent;
925: my ($uint_dom,$remotesessions);
926: if (($udom ne '') && (&domain($udom) ne '')) {
927: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
928: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
929: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
930: $remotesessions = $udomdefaults{'remotesessions'};
931: }
932: my $spareshash = &this_host_spares($udom);
933: if (ref($spareshash) eq 'HASH') {
934: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
935: foreach my $try_server (@{ $spareshash->{'primary'} }) {
936: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
937: $try_server));
938: ($spare_server, $lowest_load) =
939: &compare_server_load($try_server, $spare_server, $lowest_load);
940: }
941: }
942:
943: my $found_server = ($spare_server ne '' && $lowest_load < 100);
944:
945: if (!$found_server) {
946: if (ref($spareshash->{'default'}) eq 'ARRAY') {
947: foreach my $try_server (@{ $spareshash->{'default'} }) {
948: next unless (&spare_can_host($udom,$uint_dom,
949: $remotesessions,$try_server));
950: ($spare_server, $lowest_load) =
951: &compare_server_load($try_server, $spare_server, $lowest_load);
952: }
953: }
954: }
955: }
956:
957: if (!$want_server_name) {
958: my $protocol = 'http';
959: if ($protocol{$spare_server} eq 'https') {
960: $protocol = $protocol{$spare_server};
961: }
962: if (defined($spare_server)) {
963: my $hostname = &hostname($spare_server);
964: if (defined($hostname)) {
965: $spare_server = $protocol.'://'.$hostname;
966: }
967: }
968: }
969: return $spare_server;
970: }
971:
972: sub compare_server_load {
973: my ($try_server, $spare_server, $lowest_load, $required) = @_;
974:
975: if ($required) {
976: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
977: my $remoterev = &get_server_loncaparev(undef,$try_server);
978: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
979: if (($major eq '' && $minor eq '') ||
980: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
981: return ($spare_server,$lowest_load);
982: }
983: }
984:
985: my $loadans = &reply('load', $try_server);
986: my $userloadans = &reply('userload',$try_server);
987:
988: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
989: return ($spare_server, $lowest_load); #didn't get a number from the server
990: }
991:
992: my $load;
993: if ($loadans =~ /\d/) {
994: if ($userloadans =~ /\d/) {
995: #both are numbers, pick the bigger one
996: $load = ($loadans > $userloadans) ? $loadans
997: : $userloadans;
998: } else {
999: $load = $loadans;
1000: }
1001: } else {
1002: $load = $userloadans;
1003: }
1004:
1005: if (($load =~ /\d/) && ($load < $lowest_load)) {
1006: $spare_server = $try_server;
1007: $lowest_load = $load;
1008: }
1009: return ($spare_server,$lowest_load);
1010: }
1011:
1012: # --------------------------- ask offload servers if user already has a session
1013: sub find_existing_session {
1014: my ($udom,$uname) = @_;
1015: my $spareshash = &this_host_spares($udom);
1016: if (ref($spareshash) eq 'HASH') {
1017: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1018: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1019: return $try_server if (&has_user_session($try_server, $udom, $uname));
1020: }
1021: }
1022: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1023: foreach my $try_server (@{ $spareshash->{'default'} }) {
1024: return $try_server if (&has_user_session($try_server, $udom, $uname));
1025: }
1026: }
1027: }
1028: return;
1029: }
1030:
1031: # -------------------------------- ask if server already has a session for user
1032: sub has_user_session {
1033: my ($lonid,$udom,$uname) = @_;
1034: my $result = &reply(join(':','userhassession',
1035: map {&escape($_)} ($udom,$uname)),$lonid);
1036: return 1 if ($result eq 'ok');
1037:
1038: return 0;
1039: }
1040:
1041: # --------- determine least loaded server in a user's domain which allows login
1042:
1043: sub choose_server {
1044: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1045: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1046: my %servers = &get_servers($udom);
1047: my $lowest_load = 30000;
1048: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1049: if ($skiploadbal) {
1050: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1051: unless (defined($cached)) {
1052: my $cachetime = 60*60*24;
1053: my %domconfig =
1054: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1055: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1056: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1057: $cachetime);
1058: }
1059: }
1060: }
1061: foreach my $lonhost (keys(%servers)) {
1062: if ($skiploadbal) {
1063: if (ref($balancers) eq 'HASH') {
1064: next if (exists($balancers->{$lonhost}));
1065: }
1066: }
1067: my $loginvia;
1068: if ($checkloginvia) {
1069: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1070: if ($loginvia) {
1071: my ($server,$path) = split(/:/,$loginvia);
1072: ($login_host, $lowest_load) =
1073: &compare_server_load($server, $login_host, $lowest_load, $required);
1074: if ($login_host eq $server) {
1075: $portal_path = $path;
1076: $isredirect = 1;
1077: }
1078: } else {
1079: ($login_host, $lowest_load) =
1080: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1081: if ($login_host eq $lonhost) {
1082: $portal_path = '';
1083: $isredirect = '';
1084: }
1085: }
1086: } else {
1087: ($login_host, $lowest_load) =
1088: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1089: }
1090: }
1091: if ($login_host ne '') {
1092: $hostname = &hostname($login_host);
1093: }
1094: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1095: }
1096:
1097: # --------------------------------------------- Try to change a user's password
1098:
1099: sub changepass {
1100: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1101: $currentpass = &escape($currentpass);
1102: $newpass = &escape($newpass);
1103: my $lonhost = $perlvar{'lonHostID'};
1104: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1105: $server);
1106: if (! $answer) {
1107: &logthis("No reply on password change request to $server ".
1108: "by $uname in domain $udom.");
1109: } elsif ($answer =~ "^ok") {
1110: &logthis("$uname in $udom successfully changed their password ".
1111: "on $server.");
1112: } elsif ($answer =~ "^pwchange_failure") {
1113: &logthis("$uname in $udom was unable to change their password ".
1114: "on $server. The action was blocked by either lcpasswd ".
1115: "or pwchange");
1116: } elsif ($answer =~ "^non_authorized") {
1117: &logthis("$uname in $udom did not get their password correct when ".
1118: "attempting to change it on $server.");
1119: } elsif ($answer =~ "^auth_mode_error") {
1120: &logthis("$uname in $udom attempted to change their password despite ".
1121: "not being locally or internally authenticated on $server.");
1122: } elsif ($answer =~ "^unknown_user") {
1123: &logthis("$uname in $udom attempted to change their password ".
1124: "on $server but were unable to because $server is not ".
1125: "their home server.");
1126: } elsif ($answer =~ "^refused") {
1127: &logthis("$server refused to change $uname in $udom password because ".
1128: "it was sent an unencrypted request to change the password.");
1129: } elsif ($answer =~ "invalid_client") {
1130: &logthis("$server refused to change $uname in $udom password because ".
1131: "it was a reset by e-mail originating from an invalid server.");
1132: }
1133: return $answer;
1134: }
1135:
1136: # ----------------------- Try to determine user's current authentication scheme
1137:
1138: sub queryauthenticate {
1139: my ($uname,$udom)=@_;
1140: my $uhome=&homeserver($uname,$udom);
1141: if (!$uhome) {
1142: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1143: return 'no_host';
1144: }
1145: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1146: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1147: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1148: }
1149: return $answer;
1150: }
1151:
1152: # --------- Try to authenticate user from domain's lib servers (first this one)
1153:
1154: sub authenticate {
1155: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1156: $upass=&escape($upass);
1157: $uname= &LONCAPA::clean_username($uname);
1158: my $uhome=&homeserver($uname,$udom,1);
1159: my $newhome;
1160: if ((!$uhome) || ($uhome eq 'no_host')) {
1161: # Maybe the machine was offline and only re-appeared again recently?
1162: &reconlonc();
1163: # One more
1164: $uhome=&homeserver($uname,$udom,1);
1165: if (($uhome eq 'no_host') && $checkdefauth) {
1166: if (defined(&domain($udom,'primary'))) {
1167: $newhome=&domain($udom,'primary');
1168: }
1169: if ($newhome ne '') {
1170: $uhome = $newhome;
1171: }
1172: }
1173: if ((!$uhome) || ($uhome eq 'no_host')) {
1174: &logthis("User $uname at $udom is unknown in authenticate");
1175: return 'no_host';
1176: }
1177: }
1178: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1179: if ($answer eq 'authorized') {
1180: if ($newhome) {
1181: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1182: return 'no_account_on_host';
1183: } else {
1184: &logthis("User $uname at $udom authorized by $uhome");
1185: return $uhome;
1186: }
1187: }
1188: if ($answer eq 'non_authorized') {
1189: &logthis("User $uname at $udom rejected by $uhome");
1190: return 'no_host';
1191: }
1192: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1193: return 'no_host';
1194: }
1195:
1196: sub can_host_session {
1197: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1198: my $canhost = 1;
1199: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1200: if (ref($remotesessions) eq 'HASH') {
1201: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1202: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1203: $canhost = 0;
1204: } else {
1205: $canhost = 1;
1206: }
1207: }
1208: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1209: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1210: $canhost = 1;
1211: } else {
1212: $canhost = 0;
1213: }
1214: }
1215: if ($canhost) {
1216: if ($remotesessions->{'version'} ne '') {
1217: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1218: if ($reqmajor ne '' && $reqminor ne '') {
1219: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1220: my $major = $1;
1221: my $minor = $2;
1222: if (($major < $reqmajor ) ||
1223: (($major == $reqmajor) && ($minor < $reqminor))) {
1224: $canhost = 0;
1225: }
1226: } else {
1227: $canhost = 0;
1228: }
1229: }
1230: }
1231: }
1232: }
1233: if ($canhost) {
1234: if (ref($hostedsessions) eq 'HASH') {
1235: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1236: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1237: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1238: if (($uint_dom ne '') &&
1239: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1240: $canhost = 0;
1241: } else {
1242: $canhost = 1;
1243: }
1244: }
1245: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1246: if (($uint_dom ne '') &&
1247: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1248: $canhost = 1;
1249: } else {
1250: $canhost = 0;
1251: }
1252: }
1253: }
1254: }
1255: return $canhost;
1256: }
1257:
1258: sub spare_can_host {
1259: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1260: my $canhost=1;
1261: my $try_server_hostname = &hostname($try_server);
1262: my $serverhomeID = &get_server_homeID($try_server_hostname);
1263: my $serverhomedom = &host_domain($serverhomeID);
1264: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1265: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1266: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1267: $canhost = 0;
1268: }
1269: }
1270: if (($canhost) && ($uint_dom)) {
1271: my @intdoms;
1272: my $internet_names = &get_internet_names($try_server);
1273: if (ref($internet_names) eq 'ARRAY') {
1274: @intdoms = @{$internet_names};
1275: }
1276: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1277: my $remoterev = &get_server_loncaparev(undef,$try_server);
1278: $canhost = &can_host_session($udom,$try_server,$remoterev,
1279: $remotesessions,
1280: $defdomdefaults{'hostedsessions'});
1281: }
1282: }
1283: return $canhost;
1284: }
1285:
1286: sub this_host_spares {
1287: my ($dom) = @_;
1288: my ($dom_in_use,$lonhost_in_use,$result);
1289: my @hosts = ¤t_machine_ids();
1290: foreach my $lonhost (@hosts) {
1291: if (&host_domain($lonhost) eq $dom) {
1292: $dom_in_use = $dom;
1293: $lonhost_in_use = $lonhost;
1294: last;
1295: }
1296: }
1297: if ($dom_in_use ne '') {
1298: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1299: }
1300: if (ref($result) ne 'HASH') {
1301: $lonhost_in_use = $perlvar{'lonHostID'};
1302: $dom_in_use = &host_domain($lonhost_in_use);
1303: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1304: if (ref($result) ne 'HASH') {
1305: $result = \%spareid;
1306: }
1307: }
1308: return $result;
1309: }
1310:
1311: sub spares_for_offload {
1312: my ($dom_in_use,$lonhost_in_use) = @_;
1313: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1314: if (defined($cached)) {
1315: return $result;
1316: } else {
1317: my $cachetime = 60*60*24;
1318: my %domconfig =
1319: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1320: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1321: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1322: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1323: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1324: }
1325: }
1326: }
1327: }
1328: return;
1329: }
1330:
1331: sub get_lonbalancer_config {
1332: my ($servers) = @_;
1333: my ($currbalancer,$currtargets);
1334: if (ref($servers) eq 'HASH') {
1335: foreach my $server (keys(%{$servers})) {
1336: my %what = (
1337: spareid => 1,
1338: perlvar => 1,
1339: );
1340: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1341: if ($result eq 'ok') {
1342: if (ref($returnhash) eq 'HASH') {
1343: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1344: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1345: $currbalancer = $server;
1346: $currtargets = {};
1347: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1348: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1349: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1350: }
1351: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1352: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1353: }
1354: }
1355: last;
1356: }
1357: }
1358: }
1359: }
1360: }
1361: }
1362: return ($currbalancer,$currtargets);
1363: }
1364:
1365: sub check_loadbalancing {
1366: my ($uname,$udom,$caller) = @_;
1367: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1368: $rule_in_effect,$offloadto,$otherserver);
1369: my $lonhost = $perlvar{'lonHostID'};
1370: my @hosts = ¤t_machine_ids();
1371: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1372: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1373: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1374: my $serverhomedom = &host_domain($lonhost);
1375: my $domneedscache;
1376: my $cachetime = 60*60*24;
1377:
1378: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1379: $dom_in_use = $udom;
1380: $homeintdom = 1;
1381: } else {
1382: $dom_in_use = $serverhomedom;
1383: }
1384: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1385: unless (defined($cached)) {
1386: my %domconfig =
1387: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1388: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1389: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1390: } else {
1391: $domneedscache = $dom_in_use;
1392: }
1393: }
1394: if (ref($result) eq 'HASH') {
1395: ($is_balancer,$currtargets,$currrules) =
1396: &check_balancer_result($result,@hosts);
1397: if ($is_balancer) {
1398: if (ref($currrules) eq 'HASH') {
1399: if ($homeintdom) {
1400: if ($uname ne '') {
1401: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1402: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1403: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1404: $rule_in_effect = $currrules->{'_LC_author'};
1405: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1406: $rule_in_effect = $currrules->{'_LC_adv'}
1407: }
1408: }
1409: if ($rule_in_effect eq '') {
1410: my %userenv = &userenvironment($udom,$uname,'inststatus');
1411: if ($userenv{'inststatus'} ne '') {
1412: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1413: my ($othertitle,$usertypes,$types) =
1414: &Apache::loncommon::sorted_inst_types($udom);
1415: if (ref($types) eq 'ARRAY') {
1416: foreach my $type (@{$types}) {
1417: if (grep(/^\Q$type\E$/,@statuses)) {
1418: if (exists($currrules->{$type})) {
1419: $rule_in_effect = $currrules->{$type};
1420: }
1421: }
1422: }
1423: }
1424: } else {
1425: if (exists($currrules->{'default'})) {
1426: $rule_in_effect = $currrules->{'default'};
1427: }
1428: }
1429: }
1430: } else {
1431: if (exists($currrules->{'default'})) {
1432: $rule_in_effect = $currrules->{'default'};
1433: }
1434: }
1435: } else {
1436: if ($currrules->{'_LC_external'} ne '') {
1437: $rule_in_effect = $currrules->{'_LC_external'};
1438: }
1439: }
1440: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1441: $uname,$udom);
1442: }
1443: }
1444: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1445: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1446: unless (defined($cached)) {
1447: my %domconfig =
1448: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1449: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1450: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1451: } else {
1452: $domneedscache = $serverhomedom;
1453: }
1454: }
1455: if (ref($result) eq 'HASH') {
1456: ($is_balancer,$currtargets,$currrules) =
1457: &check_balancer_result($result,@hosts);
1458: if ($is_balancer) {
1459: if (ref($currrules) eq 'HASH') {
1460: if ($currrules->{'_LC_internetdom'} ne '') {
1461: $rule_in_effect = $currrules->{'_LC_internetdom'};
1462: }
1463: }
1464: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1465: $uname,$udom);
1466: }
1467: } else {
1468: if ($perlvar{'lonBalancer'} eq 'yes') {
1469: $is_balancer = 1;
1470: $offloadto = &this_host_spares($dom_in_use);
1471: }
1472: unless (defined($cached)) {
1473: $domneedscache = $serverhomedom;
1474: }
1475: }
1476: } else {
1477: if ($perlvar{'lonBalancer'} eq 'yes') {
1478: $is_balancer = 1;
1479: $offloadto = &this_host_spares($dom_in_use);
1480: }
1481: unless (defined($cached)) {
1482: $domneedscache = $serverhomedom;
1483: }
1484: }
1485: if ($domneedscache) {
1486: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1487: }
1488: if ($is_balancer) {
1489: my $lowest_load = 30000;
1490: if (ref($offloadto) eq 'HASH') {
1491: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1492: foreach my $try_server (@{$offloadto->{'primary'}}) {
1493: ($otherserver,$lowest_load) =
1494: &compare_server_load($try_server,$otherserver,$lowest_load);
1495: }
1496: }
1497: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1498:
1499: if (!$found_server) {
1500: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1501: foreach my $try_server (@{$offloadto->{'default'}}) {
1502: ($otherserver,$lowest_load) =
1503: &compare_server_load($try_server,$otherserver,$lowest_load);
1504: }
1505: }
1506: }
1507: } elsif (ref($offloadto) eq 'ARRAY') {
1508: if (@{$offloadto} == 1) {
1509: $otherserver = $offloadto->[0];
1510: } elsif (@{$offloadto} > 1) {
1511: foreach my $try_server (@{$offloadto}) {
1512: ($otherserver,$lowest_load) =
1513: &compare_server_load($try_server,$otherserver,$lowest_load);
1514: }
1515: }
1516: }
1517: unless ($caller eq 'login') {
1518: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1519: $is_balancer = 0;
1520: if ($uname ne '' && $udom ne '') {
1521: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1522:
1523: &appenv({'user.loadbalexempt' => $lonhost,
1524: 'user.loadbalcheck.time' => time});
1525: }
1526: }
1527: }
1528: }
1529: }
1530: return ($is_balancer,$otherserver);
1531: }
1532:
1533: sub check_balancer_result {
1534: my ($result,@hosts) = @_;
1535: my ($is_balancer,$currtargets,$currrules);
1536: if (ref($result) eq 'HASH') {
1537: if ($result->{'lonhost'} ne '') {
1538: my $currbalancer = $result->{'lonhost'};
1539: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1540: $is_balancer = 1;
1541: $currtargets = $result->{'targets'};
1542: $currrules = $result->{'rules'};
1543: }
1544: } else {
1545: foreach my $key (keys(%{$result})) {
1546: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1547: (ref($result->{$key}) eq 'HASH')) {
1548: $is_balancer = 1;
1549: $currrules = $result->{$key}{'rules'};
1550: $currtargets = $result->{$key}{'targets'};
1551: last;
1552: }
1553: }
1554: }
1555: }
1556: return ($is_balancer,$currtargets,$currrules);
1557: }
1558:
1559: sub get_loadbalancer_targets {
1560: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1561: my $offloadto;
1562: if ($rule_in_effect eq 'none') {
1563: return [$perlvar{'lonHostID'}];
1564: } elsif ($rule_in_effect eq '') {
1565: $offloadto = $currtargets;
1566: } else {
1567: if ($rule_in_effect eq 'homeserver') {
1568: my $homeserver = &homeserver($uname,$udom);
1569: if ($homeserver ne 'no_host') {
1570: $offloadto = [$homeserver];
1571: }
1572: } elsif ($rule_in_effect eq 'externalbalancer') {
1573: my %domconfig =
1574: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1575: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1576: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1577: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1578: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1579: }
1580: }
1581: } else {
1582: my %servers = &internet_dom_servers($udom);
1583: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1584: if (&hostname($remotebalancer) ne '') {
1585: $offloadto = [$remotebalancer];
1586: }
1587: }
1588: } elsif (&hostname($rule_in_effect) ne '') {
1589: $offloadto = [$rule_in_effect];
1590: }
1591: }
1592: return $offloadto;
1593: }
1594:
1595: sub internet_dom_servers {
1596: my ($dom) = @_;
1597: my (%uniqservers,%servers);
1598: my $primaryserver = &hostname(&domain($dom,'primary'));
1599: my @machinedoms = &machine_domains($primaryserver);
1600: foreach my $mdom (@machinedoms) {
1601: my %currservers = %servers;
1602: my %server = &get_servers($mdom);
1603: %servers = (%currservers,%server);
1604: }
1605: my %by_hostname;
1606: foreach my $id (keys(%servers)) {
1607: push(@{$by_hostname{$servers{$id}}},$id);
1608: }
1609: foreach my $hostname (sort(keys(%by_hostname))) {
1610: if (@{$by_hostname{$hostname}} > 1) {
1611: my $match = 0;
1612: foreach my $id (@{$by_hostname{$hostname}}) {
1613: if (&host_domain($id) eq $dom) {
1614: $uniqservers{$id} = $hostname;
1615: $match = 1;
1616: }
1617: }
1618: unless ($match) {
1619: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1620: }
1621: } else {
1622: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1623: }
1624: }
1625: return %uniqservers;
1626: }
1627:
1628: sub trusted_domains {
1629: my ($cmdtype,$calldom) = @_;
1630: my ($trusted,$untrusted);
1631: if (&domain($calldom) eq '') {
1632: return ($trusted,$untrusted);
1633: }
1634: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1635: return ($trusted,$untrusted);
1636: }
1637: my $callprimary = &domain($calldom,'primary');
1638: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1639: if ($intcalldom eq '') {
1640: return ($trusted,$untrusted);
1641: }
1642:
1643: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1644: unless (defined($cached)) {
1645: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1646: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1647: $trustconfig = $domconfig{'trust'};
1648: }
1649: if (ref($trustconfig)) {
1650: my (%possexc,%possinc,@allexc,@allinc);
1651: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1652: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1653: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1654: }
1655: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1656: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1657: }
1658: }
1659: if (keys(%possexc)) {
1660: if (keys(%possinc)) {
1661: foreach my $key (sort(keys(%possexc))) {
1662: next if ($key eq $intcalldom);
1663: unless ($possinc{$key}) {
1664: push(@allexc,$key);
1665: }
1666: }
1667: } else {
1668: @allexc = sort(keys(%possexc));
1669: }
1670: }
1671: if (keys(%possinc)) {
1672: $possinc{$intcalldom} = 1;
1673: @allinc = sort(keys(%possinc));
1674: }
1675: if ((@allexc > 0) || (@allinc > 0)) {
1676: my %doms_by_intdom;
1677: my %allintdoms = &all_host_intdom();
1678: my %alldoms = &all_host_domain();
1679: foreach my $key (%allintdoms) {
1680: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1681: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1682: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1683: }
1684: } else {
1685: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1686: }
1687: }
1688: foreach my $exc (@allexc) {
1689: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1690: $untrusted = $doms_by_intdom{$exc};
1691: }
1692: }
1693: foreach my $inc (@allinc) {
1694: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1695: $trusted = $doms_by_intdom{$inc};
1696: }
1697: }
1698: }
1699: }
1700: return ($trusted,$untrusted);
1701: }
1702:
1703: sub will_trust {
1704: my ($cmdtype,$domain,$possdom) = @_;
1705: return 1 if ($domain eq $possdom);
1706: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1707: my $willtrust;
1708: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1709: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1710: $willtrust = 1;
1711: }
1712: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1713: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1714: $willtrust = 1;
1715: }
1716: } else {
1717: $willtrust = 1;
1718: }
1719: return $willtrust;
1720: }
1721:
1722: # ---------------------- Find the homebase for a user from domain's lib servers
1723:
1724: my %homecache;
1725: sub homeserver {
1726: my ($uname,$udom,$ignoreBadCache)=@_;
1727: my $index="$uname:$udom";
1728:
1729: if (exists($homecache{$index})) { return $homecache{$index}; }
1730:
1731: my %servers = &get_servers($udom,'library');
1732: foreach my $tryserver (keys(%servers)) {
1733: next if ($ignoreBadCache ne 'true' &&
1734: exists($badServerCache{$tryserver}));
1735:
1736: my $answer=reply("home:$udom:$uname",$tryserver);
1737: if ($answer eq 'found') {
1738: delete($badServerCache{$tryserver});
1739: return $homecache{$index}=$tryserver;
1740: } elsif ($answer eq 'no_host') {
1741: $badServerCache{$tryserver}=1;
1742: }
1743: }
1744: return 'no_host';
1745: }
1746:
1747: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1748:
1749: sub idget {
1750: my ($udom,$idsref,$namespace)=@_;
1751: my %returnhash=();
1752: my @ids=();
1753: if (ref($idsref) eq 'ARRAY') {
1754: @ids = @{$idsref};
1755: } else {
1756: return %returnhash;
1757: }
1758: if ($namespace eq '') {
1759: $namespace = 'ids';
1760: }
1761:
1762: my %servers = &get_servers($udom,'library');
1763: foreach my $tryserver (keys(%servers)) {
1764: my $idlist=join('&', map { &escape($_); } @ids);
1765: if ($namespace eq 'ids') {
1766: $idlist=~tr/A-Z/a-z/;
1767: }
1768: my $reply;
1769: if ($namespace eq 'ids') {
1770: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1771: } else {
1772: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1773: }
1774: my @answer=();
1775: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1776: @answer=split(/\&/,$reply);
1777: } ;
1778: my $i;
1779: for ($i=0;$i<=$#ids;$i++) {
1780: if ($answer[$i]) {
1781: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1782: }
1783: }
1784: }
1785: return %returnhash;
1786: }
1787:
1788: # ------------------------------------- Find the IDs behind a list of usernames
1789:
1790: sub idrget {
1791: my ($udom,@unames)=@_;
1792: my %returnhash=();
1793: foreach my $uname (@unames) {
1794: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1795: }
1796: return %returnhash;
1797: }
1798:
1799: # Store away a list of names and associated student/employee IDs or clicker IDs
1800:
1801: sub idput {
1802: my ($udom,$idsref,$uhom,$namespace)=@_;
1803: my %servers=();
1804: my %ids=();
1805: my %byid = ();
1806: if (ref($idsref) eq 'HASH') {
1807: %ids=%{$idsref};
1808: }
1809: if ($namespace eq '') {
1810: $namespace = 'ids';
1811: }
1812: foreach my $uname (keys(%ids)) {
1813: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1814: if ($uhom eq '') {
1815: $uhom=&homeserver($uname,$udom);
1816: }
1817: if ($uhom ne 'no_host') {
1818: my $esc_unam=&escape($uname);
1819: if ($namespace eq 'ids') {
1820: my $id=&escape($ids{$uname});
1821: $id=~tr/A-Z/a-z/;
1822: my $esc_unam=&escape($uname);
1823: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1824: } else {
1825: my @currids = split(/,/,$ids{$uname});
1826: foreach my $id (@currids) {
1827: $byid{$uhom}{$id} .= $uname.',';
1828: }
1829: }
1830: }
1831: }
1832: if ($namespace eq 'clickers') {
1833: foreach my $server (keys(%byid)) {
1834: if (ref($byid{$server}) eq 'HASH') {
1835: foreach my $id (keys(%{$byid{$server}})) {
1836: $byid{$server} =~ s/,$//;
1837: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1838: }
1839: }
1840: }
1841: }
1842: foreach my $server (keys(%servers)) {
1843: $servers{$server} =~ s/\&$//;
1844: if ($namespace eq 'ids') {
1845: &critical('idput:'.$udom.':'.$servers{$server},$server);
1846: } else {
1847: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1848: }
1849: }
1850: }
1851:
1852: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1853:
1854: sub iddel {
1855: my ($udom,$idshashref,$uhome,$namespace)=@_;
1856: my %result=();
1857: my %ids=();
1858: my %byid = ();
1859: if (ref($idshashref) eq 'HASH') {
1860: %ids=%{$idshashref};
1861: } else {
1862: return %result;
1863: }
1864: if ($namespace eq '') {
1865: $namespace = 'ids';
1866: }
1867: my %servers=();
1868: while (my ($id,$unamestr) = each(%ids)) {
1869: if ($namespace eq 'ids') {
1870: my $uhom = $uhome;
1871: if ($uhom eq '') {
1872: $uhom=&homeserver($unamestr,$udom);
1873: }
1874: if ($uhom ne 'no_host') {
1875: $servers{$uhom}.='&'.&escape($id);
1876: }
1877: } else {
1878: my @curritems = split(/,/,$ids{$id});
1879: foreach my $uname (@curritems) {
1880: my $uhom = $uhome;
1881: if ($uhom eq '') {
1882: $uhom=&homeserver($uname,$udom);
1883: }
1884: if ($uhom ne 'no_host') {
1885: $byid{$uhom}{$id} .= $uname.',';
1886: }
1887: }
1888: }
1889: }
1890: if ($namespace eq 'clickers') {
1891: foreach my $server (keys(%byid)) {
1892: if (ref($byid{$server}) eq 'HASH') {
1893: foreach my $id (keys(%{$byid{$server}})) {
1894: $byid{$server}{$id} =~ s/,$//;
1895: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1896: }
1897: }
1898: }
1899: }
1900: foreach my $server (keys(%servers)) {
1901: $servers{$server} =~ s/\&$//;
1902: if ($namespace eq 'ids') {
1903: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1904: } elsif ($namespace eq 'clickers') {
1905: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1906: }
1907: }
1908: return %result;
1909: }
1910:
1911: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1912:
1913: sub updateclickers {
1914: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1915: my %clickers;
1916: if (ref($idshashref) eq 'HASH') {
1917: %clickers=%{$idshashref};
1918: } else {
1919: return;
1920: }
1921: my $items='';
1922: foreach my $item (keys(%clickers)) {
1923: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1924: }
1925: $items=~s/\&$//;
1926: my $request = "updateclickers:$udom:$action:$items";
1927: if ($critical) {
1928: return &critical($request,$uhome);
1929: } else {
1930: return &reply($request,$uhome);
1931: }
1932: }
1933:
1934: # ------------------------------dump from db file owned by domainconfig user
1935: sub dump_dom {
1936: my ($namespace, $udom, $regexp) = @_;
1937:
1938: $udom ||= $env{'user.domain'};
1939:
1940: return () unless $udom;
1941:
1942: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1943: }
1944:
1945: # ------------------------------------------ get items from domain db files
1946:
1947: sub get_dom {
1948: my ($namespace,$storearr,$udom,$uhome)=@_;
1949: return if ($udom eq 'public');
1950: my $items='';
1951: foreach my $item (@$storearr) {
1952: $items.=&escape($item).'&';
1953: }
1954: $items=~s/\&$//;
1955: if (!$udom) {
1956: $udom=$env{'user.domain'};
1957: return if ($udom eq 'public');
1958: if (defined(&domain($udom,'primary'))) {
1959: $uhome=&domain($udom,'primary');
1960: } else {
1961: undef($uhome);
1962: }
1963: } else {
1964: if (!$uhome) {
1965: if (defined(&domain($udom,'primary'))) {
1966: $uhome=&domain($udom,'primary');
1967: }
1968: }
1969: }
1970: if ($udom && $uhome && ($uhome ne 'no_host')) {
1971: my $rep;
1972: if ($namespace =~ /^enc/) {
1973: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
1974: } else {
1975: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1976: }
1977: my %returnhash;
1978: if ($rep eq '' || $rep =~ /^error: 2 /) {
1979: return %returnhash;
1980: }
1981: my @pairs=split(/\&/,$rep);
1982: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1983: return @pairs;
1984: }
1985: my $i=0;
1986: foreach my $item (@$storearr) {
1987: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1988: $i++;
1989: }
1990: return %returnhash;
1991: } else {
1992: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1993: }
1994: }
1995:
1996: # -------------------------------------------- put items in domain db files
1997:
1998: sub put_dom {
1999: my ($namespace,$storehash,$udom,$uhome)=@_;
2000: if (!$udom) {
2001: $udom=$env{'user.domain'};
2002: if (defined(&domain($udom,'primary'))) {
2003: $uhome=&domain($udom,'primary');
2004: } else {
2005: undef($uhome);
2006: }
2007: } else {
2008: if (!$uhome) {
2009: if (defined(&domain($udom,'primary'))) {
2010: $uhome=&domain($udom,'primary');
2011: }
2012: }
2013: }
2014: if ($udom && $uhome && ($uhome ne 'no_host')) {
2015: my $items='';
2016: foreach my $item (keys(%$storehash)) {
2017: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2018: }
2019: $items=~s/\&$//;
2020: if ($namespace =~ /^enc/) {
2021: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2022: } else {
2023: return &reply("putdom:$udom:$namespace:$items",$uhome);
2024: }
2025: } else {
2026: &logthis("put_dom failed - no homeserver and/or domain");
2027: }
2028: }
2029:
2030: # --------------------- newput for items in db file owned by domainconfig user
2031: sub newput_dom {
2032: my ($namespace,$storehash,$udom) = @_;
2033: my $result;
2034: if (!$udom) {
2035: $udom=$env{'user.domain'};
2036: }
2037: if ($udom) {
2038: my $uname = &get_domainconfiguser($udom);
2039: $result = &newput($namespace,$storehash,$udom,$uname);
2040: }
2041: return $result;
2042: }
2043:
2044: # --------------------- delete for items in db file owned by domainconfig user
2045: sub del_dom {
2046: my ($namespace,$storearr,$udom)=@_;
2047: if (ref($storearr) eq 'ARRAY') {
2048: if (!$udom) {
2049: $udom=$env{'user.domain'};
2050: }
2051: if ($udom) {
2052: my $uname = &get_domainconfiguser($udom);
2053: return &del($namespace,$storearr,$udom,$uname);
2054: }
2055: }
2056: }
2057:
2058: # ----------------------------------construct domainconfig user for a domain
2059: sub get_domainconfiguser {
2060: my ($udom) = @_;
2061: return $udom.'-domainconfig';
2062: }
2063:
2064: sub retrieve_inst_usertypes {
2065: my ($udom) = @_;
2066: my (%returnhash,@order);
2067: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2068: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2069: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2070: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2071: } else {
2072: if (defined(&domain($udom,'primary'))) {
2073: my $uhome=&domain($udom,'primary');
2074: my $rep=&reply("inst_usertypes:$udom",$uhome);
2075: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2076: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2077: return (\%returnhash,\@order);
2078: }
2079: my ($hashitems,$orderitems) = split(/:/,$rep);
2080: my @pairs=split(/\&/,$hashitems);
2081: foreach my $item (@pairs) {
2082: my ($key,$value)=split(/=/,$item,2);
2083: $key = &unescape($key);
2084: next if ($key =~ /^error: 2 /);
2085: $returnhash{$key}=&thaw_unescape($value);
2086: }
2087: my @esc_order = split(/\&/,$orderitems);
2088: foreach my $item (@esc_order) {
2089: push(@order,&unescape($item));
2090: }
2091: } else {
2092: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2093: }
2094: return (\%returnhash,\@order);
2095: }
2096: }
2097:
2098: sub is_domainimage {
2099: my ($url) = @_;
2100: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2101: if (&domain($1) ne '') {
2102: return '1';
2103: }
2104: }
2105: return;
2106: }
2107:
2108: sub inst_directory_query {
2109: my ($srch) = @_;
2110: my $udom = $srch->{'srchdomain'};
2111: my %results;
2112: my $homeserver = &domain($udom,'primary');
2113: my $outcome;
2114: if ($homeserver ne '') {
2115: unless ($homeserver eq $perlvar{'lonHostID'}) {
2116: if ($srch->{'srchby'} eq 'email') {
2117: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2118: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2119: if (($major eq '' && $minor eq '') || ($major < 2) ||
2120: (($major == 2) && ($minor < 12))) {
2121: return;
2122: }
2123: }
2124: }
2125: my $queryid=&reply("querysend:instdirsearch:".
2126: &escape($srch->{'srchby'}).':'.
2127: &escape($srch->{'srchterm'}).':'.
2128: &escape($srch->{'srchtype'}),$homeserver);
2129: my $host=&hostname($homeserver);
2130: if ($queryid !~/^\Q$host\E\_/) {
2131: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2132: return;
2133: }
2134: my $response = &get_query_reply($queryid);
2135: my $maxtries = 5;
2136: my $tries = 1;
2137: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2138: $response = &get_query_reply($queryid);
2139: $tries ++;
2140: }
2141:
2142: if (!&error($response) && $response ne 'refused') {
2143: if ($response eq 'unavailable') {
2144: $outcome = $response;
2145: } else {
2146: $outcome = 'ok';
2147: my @matches = split(/\n/,$response);
2148: foreach my $match (@matches) {
2149: my ($key,$value) = split(/=/,$match);
2150: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2151: }
2152: }
2153: }
2154: }
2155: return ($outcome,%results);
2156: }
2157:
2158: sub usersearch {
2159: my ($srch) = @_;
2160: my $dom = $srch->{'srchdomain'};
2161: my %results;
2162: my %libserv = &all_library();
2163: my $query = 'usersearch';
2164: foreach my $tryserver (keys(%libserv)) {
2165: if (&host_domain($tryserver) eq $dom) {
2166: unless ($tryserver eq $perlvar{'lonHostID'}) {
2167: if ($srch->{'srchby'} eq 'email') {
2168: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2169: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2170: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2171: (($major == 2) && ($minor < 12)));
2172: }
2173: }
2174: my $host=&hostname($tryserver);
2175: my $queryid=
2176: &reply("querysend:".&escape($query).':'.
2177: &escape($srch->{'srchby'}).':'.
2178: &escape($srch->{'srchtype'}).':'.
2179: &escape($srch->{'srchterm'}),$tryserver);
2180: if ($queryid !~/^\Q$host\E\_/) {
2181: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2182: next;
2183: }
2184: my $reply = &get_query_reply($queryid);
2185: my $maxtries = 1;
2186: my $tries = 1;
2187: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2188: $reply = &get_query_reply($queryid);
2189: $tries ++;
2190: }
2191: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2192: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2193: } else {
2194: my @matches;
2195: if ($reply =~ /\n/) {
2196: @matches = split(/\n/,$reply);
2197: } else {
2198: @matches = split(/\&/,$reply);
2199: }
2200: foreach my $match (@matches) {
2201: my ($uname,$udom,%userhash);
2202: foreach my $entry (split(/:/,$match)) {
2203: my ($key,$value) =
2204: map {&unescape($_);} split(/=/,$entry);
2205: $userhash{$key} = $value;
2206: if ($key eq 'username') {
2207: $uname = $value;
2208: } elsif ($key eq 'domain') {
2209: $udom = $value;
2210: }
2211: }
2212: $results{$uname.':'.$udom} = \%userhash;
2213: }
2214: }
2215: }
2216: }
2217: return %results;
2218: }
2219:
2220: sub get_instuser {
2221: my ($udom,$uname,$id) = @_;
2222: my $homeserver = &domain($udom,'primary');
2223: my ($outcome,%results);
2224: if ($homeserver ne '') {
2225: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2226: &escape($id).':'.&escape($udom),$homeserver);
2227: my $host=&hostname($homeserver);
2228: if ($queryid !~/^\Q$host\E\_/) {
2229: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2230: return;
2231: }
2232: my $response = &get_query_reply($queryid);
2233: my $maxtries = 5;
2234: my $tries = 1;
2235: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2236: $response = &get_query_reply($queryid);
2237: $tries ++;
2238: }
2239: if (!&error($response) && $response ne 'refused') {
2240: if ($response eq 'unavailable') {
2241: $outcome = $response;
2242: } else {
2243: $outcome = 'ok';
2244: my @matches = split(/\n/,$response);
2245: foreach my $match (@matches) {
2246: my ($key,$value) = split(/=/,$match);
2247: $results{&unescape($key)} = &thaw_unescape($value);
2248: }
2249: }
2250: }
2251: }
2252: my %userinfo;
2253: if (ref($results{$uname}) eq 'HASH') {
2254: %userinfo = %{$results{$uname}};
2255: }
2256: return ($outcome,%userinfo);
2257: }
2258:
2259: sub get_multiple_instusers {
2260: my ($udom,$users,$caller) = @_;
2261: my ($outcome,$results);
2262: if (ref($users) eq 'HASH') {
2263: my $count = keys(%{$users});
2264: my $requested = &freeze_escape($users);
2265: my $homeserver = &domain($udom,'primary');
2266: if ($homeserver ne '') {
2267: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2268: my $host=&hostname($homeserver);
2269: if ($queryid !~/^\Q$host\E\_/) {
2270: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2271: ' for host: '.$homeserver.'in domain '.$udom);
2272: return ($outcome,$results);
2273: }
2274: my $response = &get_query_reply($queryid);
2275: my $maxtries = 5;
2276: if ($count > 100) {
2277: $maxtries = 1+int($count/20);
2278: }
2279: my $tries = 1;
2280: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2281: $response = &get_query_reply($queryid);
2282: $tries ++;
2283: }
2284: if ($response eq '') {
2285: $results = {};
2286: foreach my $key (keys(%{$users})) {
2287: my ($uname,$id);
2288: if ($caller eq 'id') {
2289: $id = $key;
2290: } else {
2291: $uname = $key;
2292: }
2293: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2294: $outcome = $resp;
2295: if ($resp eq 'ok') {
2296: %{$results} = (%{$results}, %info);
2297: } else {
2298: last;
2299: }
2300: }
2301: } elsif(!&error($response) && ($response ne 'refused')) {
2302: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2303: $outcome = $response;
2304: } else {
2305: ($outcome,my $userdata) = split(/=/,$response,2);
2306: if ($outcome eq 'ok') {
2307: $results = &thaw_unescape($userdata);
2308: }
2309: }
2310: }
2311: }
2312: }
2313: return ($outcome,$results);
2314: }
2315:
2316: sub inst_rulecheck {
2317: my ($udom,$uname,$id,$item,$rules) = @_;
2318: my %returnhash;
2319: if ($udom ne '') {
2320: if (ref($rules) eq 'ARRAY') {
2321: @{$rules} = map {&escape($_);} (@{$rules});
2322: my $rulestr = join(':',@{$rules});
2323: my $homeserver=&domain($udom,'primary');
2324: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2325: my $response;
2326: if ($item eq 'username') {
2327: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2328: ':'.&escape($uname).':'.$rulestr,
2329: $homeserver));
2330: } elsif ($item eq 'id') {
2331: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2332: ':'.&escape($id).':'.$rulestr,
2333: $homeserver));
2334: } elsif ($item eq 'selfcreate') {
2335: $response=&unescape(&reply('instselfcreatecheck:'.
2336: &escape($udom).':'.&escape($uname).
2337: ':'.$rulestr,$homeserver));
2338: }
2339: if ($response ne 'refused') {
2340: my @pairs=split(/\&/,$response);
2341: foreach my $item (@pairs) {
2342: my ($key,$value)=split(/=/,$item,2);
2343: $key = &unescape($key);
2344: next if ($key =~ /^error: 2 /);
2345: $returnhash{$key}=&thaw_unescape($value);
2346: }
2347: }
2348: }
2349: }
2350: }
2351: return %returnhash;
2352: }
2353:
2354: sub inst_userrules {
2355: my ($udom,$check) = @_;
2356: my (%ruleshash,@ruleorder);
2357: if ($udom ne '') {
2358: my $homeserver=&domain($udom,'primary');
2359: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2360: my $response;
2361: if ($check eq 'id') {
2362: $response=&reply('instidrules:'.&escape($udom),
2363: $homeserver);
2364: } elsif ($check eq 'email') {
2365: $response=&reply('instemailrules:'.&escape($udom),
2366: $homeserver);
2367: } else {
2368: $response=&reply('instuserrules:'.&escape($udom),
2369: $homeserver);
2370: }
2371: if (($response ne 'refused') && ($response ne 'error') &&
2372: ($response ne 'unknown_cmd') &&
2373: ($response ne 'no_such_host')) {
2374: my ($hashitems,$orderitems) = split(/:/,$response);
2375: my @pairs=split(/\&/,$hashitems);
2376: foreach my $item (@pairs) {
2377: my ($key,$value)=split(/=/,$item,2);
2378: $key = &unescape($key);
2379: next if ($key =~ /^error: 2 /);
2380: $ruleshash{$key}=&thaw_unescape($value);
2381: }
2382: my @esc_order = split(/\&/,$orderitems);
2383: foreach my $item (@esc_order) {
2384: push(@ruleorder,&unescape($item));
2385: }
2386: }
2387: }
2388: }
2389: return (\%ruleshash,\@ruleorder);
2390: }
2391:
2392: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2393:
2394: sub get_domain_defaults {
2395: my ($domain,$ignore_cache) = @_;
2396: return if (($domain eq '') || ($domain eq 'public'));
2397: my $cachetime = 60*60*24;
2398: unless ($ignore_cache) {
2399: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2400: if (defined($cached)) {
2401: if (ref($result) eq 'HASH') {
2402: return %{$result};
2403: }
2404: }
2405: }
2406: my %domdefaults;
2407: my %domconfig =
2408: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2409: 'requestcourses','inststatus',
2410: 'coursedefaults','usersessions',
2411: 'requestauthor','selfenrollment',
2412: 'coursecategories','ssl','autoenroll',
2413: 'trust','helpsettings'],$domain);
2414: my @coursetypes = ('official','unofficial','community','textbook','placement');
2415: if (ref($domconfig{'defaults'}) eq 'HASH') {
2416: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2417: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2418: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2419: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2420: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2421: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2422: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2423: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2424: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2425: } else {
2426: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2427: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2428: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2429: }
2430: if (ref($domconfig{'quotas'}) eq 'HASH') {
2431: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2432: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2433: } else {
2434: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2435: }
2436: my @usertools = ('aboutme','blog','webdav','portfolio');
2437: foreach my $item (@usertools) {
2438: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2439: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2440: }
2441: }
2442: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2443: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2444: }
2445: }
2446: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2447: foreach my $item ('official','unofficial','community','textbook','placement') {
2448: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2449: }
2450: }
2451: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2452: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2453: }
2454: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2455: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2456: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2457: }
2458: }
2459: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2460: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2461: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2462: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2463: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2464: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2465: }
2466: foreach my $type (@coursetypes) {
2467: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2468: unless ($type eq 'community') {
2469: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2470: }
2471: }
2472: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2473: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2474: }
2475: if ($domdefaults{'postsubmit'} eq 'on') {
2476: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2477: $domdefaults{$type.'postsubtimeout'} =
2478: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2479: }
2480: }
2481: }
2482: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2483: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2484: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2485: if (@clonecodes) {
2486: $domdefaults{'canclone'} = join('+',@clonecodes);
2487: }
2488: }
2489: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2490: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2491: }
2492: if ($domconfig{'coursedefaults'}{'texengine'}) {
2493: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2494: }
2495: }
2496: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2497: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2498: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2499: }
2500: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2501: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2502: }
2503: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2504: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2505: }
2506: }
2507: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2508: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2509: my @settings = ('types','registered','enroll_dates','access_dates','section',
2510: 'approval','limit');
2511: foreach my $type (@coursetypes) {
2512: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2513: my @mgrdc = ();
2514: foreach my $item (@settings) {
2515: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2516: push(@mgrdc,$item);
2517: }
2518: }
2519: if (@mgrdc) {
2520: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2521: }
2522: }
2523: }
2524: }
2525: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2526: foreach my $type (@coursetypes) {
2527: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2528: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2529: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2530: }
2531: }
2532: }
2533: }
2534: }
2535: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2536: $domdefaults{'catauth'} = 'std';
2537: $domdefaults{'catunauth'} = 'std';
2538: if ($domconfig{'coursecategories'}{'auth'}) {
2539: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2540: }
2541: if ($domconfig{'coursecategories'}{'unauth'}) {
2542: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2543: }
2544: }
2545: if (ref($domconfig{'ssl'}) eq 'HASH') {
2546: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2547: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2548: }
2549: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2550: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2551: }
2552: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2553: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2554: }
2555: }
2556: if (ref($domconfig{'trust'}) eq 'HASH') {
2557: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2558: foreach my $prefix (@prefixes) {
2559: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2560: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2561: }
2562: }
2563: }
2564: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2565: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2566: }
2567: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2568: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2569: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2570: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2571: }
2572: }
2573: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2574: return %domdefaults;
2575: }
2576:
2577: sub course_portal_url {
2578: my ($cnum,$cdom) = @_;
2579: my $chome = &homeserver($cnum,$cdom);
2580: my $hostname = &hostname($chome);
2581: my $protocol = $protocol{$chome};
2582: $protocol = 'http' if ($protocol ne 'https');
2583: my %domdefaults = &get_domain_defaults($cdom);
2584: my $firsturl;
2585: if ($domdefaults{'portal_def'}) {
2586: $firsturl = $domdefaults{'portal_def'};
2587: } else {
2588: $firsturl = $protocol.'://'.$hostname;
2589: }
2590: return $firsturl;
2591: }
2592:
2593: # --------------------------------------------------- Assign a key to a student
2594:
2595: sub assign_access_key {
2596: #
2597: # a valid key looks like uname:udom#comments
2598: # comments are being appended
2599: #
2600: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2601: $kdom=
2602: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2603: $knum=
2604: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2605: $cdom=
2606: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2607: $cnum=
2608: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2609: $udom=$env{'user.name'} unless (defined($udom));
2610: $uname=$env{'user.domain'} unless (defined($uname));
2611: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2612: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2613: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2614: # assigned to this person
2615: # - this should not happen,
2616: # unless something went wrong
2617: # the first time around
2618: # ready to assign
2619: $logentry=$1.'; '.$logentry;
2620: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2621: $kdom,$knum) eq 'ok') {
2622: # key now belongs to user
2623: my $envkey='key.'.$cdom.'_'.$cnum;
2624: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2625: &appenv({'environment.'.$envkey => $ckey});
2626: return 'ok';
2627: } else {
2628: return
2629: 'error: Count not permanently assign key, will need to be re-entered later.';
2630: }
2631: } else {
2632: return 'error: Could not assign key, try again later.';
2633: }
2634: } elsif (!$existing{$ckey}) {
2635: # the key does not exist
2636: return 'error: The key does not exist';
2637: } else {
2638: # the key is somebody else's
2639: return 'error: The key is already in use';
2640: }
2641: }
2642:
2643: # ------------------------------------------ put an additional comment on a key
2644:
2645: sub comment_access_key {
2646: #
2647: # a valid key looks like uname:udom#comments
2648: # comments are being appended
2649: #
2650: my ($ckey,$cdom,$cnum,$logentry)=@_;
2651: $cdom=
2652: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2653: $cnum=
2654: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2655: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2656: if ($existing{$ckey}) {
2657: $existing{$ckey}.='; '.$logentry;
2658: # ready to assign
2659: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2660: $cdom,$cnum) eq 'ok') {
2661: return 'ok';
2662: } else {
2663: return 'error: Count not store comment.';
2664: }
2665: } else {
2666: # the key does not exist
2667: return 'error: The key does not exist';
2668: }
2669: }
2670:
2671: # ------------------------------------------------------ Generate a set of keys
2672:
2673: sub generate_access_keys {
2674: my ($number,$cdom,$cnum,$logentry)=@_;
2675: $cdom=
2676: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2677: $cnum=
2678: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2679: unless (&allowed('mky',$cdom)) { return 0; }
2680: unless (($cdom) && ($cnum)) { return 0; }
2681: if ($number>10000) { return 0; }
2682: sleep(2); # make sure don't get same seed twice
2683: srand(time()^($$+($$<<15))); # from "Programming Perl"
2684: my $total=0;
2685: for (my $i=1;$i<=$number;$i++) {
2686: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2687: sprintf("%lx",int(100000*rand)).'-'.
2688: sprintf("%lx",int(100000*rand));
2689: $newkey=~s/1/g/g; # folks mix up 1 and l
2690: $newkey=~s/0/h/g; # and also 0 and O
2691: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2692: if ($existing{$newkey}) {
2693: $i--;
2694: } else {
2695: if (&put('accesskeys',
2696: { $newkey => '# generated '.localtime().
2697: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2698: '; '.$logentry },
2699: $cdom,$cnum) eq 'ok') {
2700: $total++;
2701: }
2702: }
2703: }
2704: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2705: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2706: return $total;
2707: }
2708:
2709: # ------------------------------------------------------- Validate an accesskey
2710:
2711: sub validate_access_key {
2712: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2713: $cdom=
2714: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2715: $cnum=
2716: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2717: $udom=$env{'user.domain'} unless (defined($udom));
2718: $uname=$env{'user.name'} unless (defined($uname));
2719: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2720: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2721: }
2722:
2723: # ------------------------------------- Find the section of student in a course
2724: sub devalidate_getsection_cache {
2725: my ($udom,$unam,$courseid)=@_;
2726: my $hashid="$udom:$unam:$courseid";
2727: &devalidate_cache_new('getsection',$hashid);
2728: }
2729:
2730: sub courseid_to_courseurl {
2731: my ($courseid) = @_;
2732: #already url style courseid
2733: return $courseid if ($courseid =~ m{^/});
2734:
2735: if (exists($env{'course.'.$courseid.'.num'})) {
2736: my $cnum = $env{'course.'.$courseid.'.num'};
2737: my $cdom = $env{'course.'.$courseid.'.domain'};
2738: return "/$cdom/$cnum";
2739: }
2740:
2741: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2742: if (exists($courseinfo{'num'})) {
2743: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2744: }
2745:
2746: return undef;
2747: }
2748:
2749: sub getsection {
2750: my ($udom,$unam,$courseid)=@_;
2751: my $cachetime=1800;
2752:
2753: my $hashid="$udom:$unam:$courseid";
2754: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2755: if (defined($cached)) { return $result; }
2756:
2757: my %Pending;
2758: my %Expired;
2759: #
2760: # Each role can either have not started yet (pending), be active,
2761: # or have expired.
2762: #
2763: # If there is an active role, we are done.
2764: #
2765: # If there is more than one role which has not started yet,
2766: # choose the one which will start sooner
2767: # If there is one role which has not started yet, return it.
2768: #
2769: # If there is more than one expired role, choose the one which ended last.
2770: # If there is a role which has expired, return it.
2771: #
2772: $courseid = &courseid_to_courseurl($courseid);
2773: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2774: foreach my $key (keys(%roleshash)) {
2775: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2776: my $section=$1;
2777: if ($key eq $courseid.'_st') { $section=''; }
2778: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2779: my $now=time;
2780: if (defined($end) && $end && ($now > $end)) {
2781: $Expired{$end}=$section;
2782: next;
2783: }
2784: if (defined($start) && $start && ($now < $start)) {
2785: $Pending{$start}=$section;
2786: next;
2787: }
2788: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2789: }
2790: #
2791: # Presumedly there will be few matching roles from the above
2792: # loop and the sorting time will be negligible.
2793: if (scalar(keys(%Pending))) {
2794: my ($time) = sort {$a <=> $b} keys(%Pending);
2795: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2796: }
2797: if (scalar(keys(%Expired))) {
2798: my @sorted = sort {$a <=> $b} keys(%Expired);
2799: my $time = pop(@sorted);
2800: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2801: }
2802: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2803: }
2804:
2805: sub save_cache {
2806: &purge_remembered();
2807: #&Apache::loncommon::validate_page();
2808: undef(%env);
2809: undef($env_loaded);
2810: }
2811:
2812: my $to_remember=-1;
2813: my %remembered;
2814: my %accessed;
2815: my $kicks=0;
2816: my $hits=0;
2817: sub make_key {
2818: my ($name,$id) = @_;
2819: if (length($id) > 65
2820: && length(&escape($id)) > 200) {
2821: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2822: }
2823: return &escape($name.':'.$id);
2824: }
2825:
2826: sub devalidate_cache_new {
2827: my ($name,$id,$debug) = @_;
2828: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2829: my $remembered_id=$name.':'.$id;
2830: $id=&make_key($name,$id);
2831: $memcache->delete($id);
2832: delete($remembered{$remembered_id});
2833: delete($accessed{$remembered_id});
2834: }
2835:
2836: sub is_cached_new {
2837: my ($name,$id,$debug) = @_;
2838: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2839: if (exists($remembered{$remembered_id})) {
2840: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2841: $accessed{$remembered_id}=[&gettimeofday()];
2842: $hits++;
2843: return ($remembered{$remembered_id},1);
2844: }
2845: $id=&make_key($name,$id);
2846: my $value = $memcache->get($id);
2847: if (!(defined($value))) {
2848: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2849: return (undef,undef);
2850: }
2851: if ($value eq '__undef__') {
2852: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2853: $value=undef;
2854: }
2855: &make_room($remembered_id,$value,$debug);
2856: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2857: return ($value,1);
2858: }
2859:
2860: sub do_cache_new {
2861: my ($name,$id,$value,$time,$debug) = @_;
2862: my $remembered_id=$name.':'.$id;
2863: $id=&make_key($name,$id);
2864: my $setvalue=$value;
2865: if (!defined($setvalue)) {
2866: $setvalue='__undef__';
2867: }
2868: if (!defined($time) ) {
2869: $time=600;
2870: }
2871: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2872: my $result = $memcache->set($id,$setvalue,$time);
2873: if (! $result) {
2874: &logthis("caching of id -> $id failed");
2875: $memcache->disconnect_all();
2876: }
2877: # need to make a copy of $value
2878: &make_room($remembered_id,$value,$debug);
2879: return $value;
2880: }
2881:
2882: sub make_room {
2883: my ($remembered_id,$value,$debug)=@_;
2884:
2885: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2886: : $value;
2887: if ($to_remember<0) { return; }
2888: $accessed{$remembered_id}=[&gettimeofday()];
2889: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2890: my $to_kick;
2891: my $max_time=0;
2892: foreach my $other (keys(%accessed)) {
2893: if (&tv_interval($accessed{$other}) > $max_time) {
2894: $to_kick=$other;
2895: $max_time=&tv_interval($accessed{$other});
2896: }
2897: }
2898: delete($remembered{$to_kick});
2899: delete($accessed{$to_kick});
2900: $kicks++;
2901: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2902: return;
2903: }
2904:
2905: sub purge_remembered {
2906: #&logthis("Tossing ".scalar(keys(%remembered)));
2907: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2908: undef(%remembered);
2909: undef(%accessed);
2910: }
2911: # ------------------------------------- Read an entry from a user's environment
2912:
2913: sub userenvironment {
2914: my ($udom,$unam,@what)=@_;
2915: my $items;
2916: foreach my $item (@what) {
2917: $items.=&escape($item).'&';
2918: }
2919: $items=~s/\&$//;
2920: my %returnhash=();
2921: my $uhome = &homeserver($unam,$udom);
2922: unless ($uhome eq 'no_host') {
2923: my @answer=split(/\&/,
2924: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2925: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2926: return %returnhash;
2927: }
2928: my $i;
2929: for ($i=0;$i<=$#what;$i++) {
2930: $returnhash{$what[$i]}=&unescape($answer[$i]);
2931: }
2932: }
2933: return %returnhash;
2934: }
2935:
2936: # ---------------------------------------------------------- Get a studentphoto
2937: sub studentphoto {
2938: my ($udom,$unam,$ext) = @_;
2939: my $home=&Apache::lonnet::homeserver($unam,$udom);
2940: if (defined($env{'request.course.id'})) {
2941: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2942: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2943: return(&retrievestudentphoto($udom,$unam,$ext));
2944: } else {
2945: my ($result,$perm_reqd)=
2946: &Apache::lonnet::auto_photo_permission($unam,$udom);
2947: if ($result eq 'ok') {
2948: if (!($perm_reqd eq 'yes')) {
2949: return(&retrievestudentphoto($udom,$unam,$ext));
2950: }
2951: }
2952: }
2953: }
2954: } else {
2955: my ($result,$perm_reqd) =
2956: &Apache::lonnet::auto_photo_permission($unam,$udom);
2957: if ($result eq 'ok') {
2958: if (!($perm_reqd eq 'yes')) {
2959: return(&retrievestudentphoto($udom,$unam,$ext));
2960: }
2961: }
2962: }
2963: return '/adm/lonKaputt/lonlogo_broken.gif';
2964: }
2965:
2966: sub retrievestudentphoto {
2967: my ($udom,$unam,$ext,$type) = @_;
2968: my $home=&Apache::lonnet::homeserver($unam,$udom);
2969: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2970: if ($ret eq 'ok') {
2971: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2972: if ($type eq 'thumbnail') {
2973: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2974: }
2975: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2976: return $tokenurl;
2977: } else {
2978: if ($type eq 'thumbnail') {
2979: return '/adm/lonKaputt/genericstudent_tn.gif';
2980: } else {
2981: return '/adm/lonKaputt/lonlogo_broken.gif';
2982: }
2983: }
2984: }
2985:
2986: # -------------------------------------------------------------------- New chat
2987:
2988: sub chatsend {
2989: my ($newentry,$anon,$group)=@_;
2990: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2991: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2992: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2993: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2994: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2995: &escape($newentry)).':'.$group,$chome);
2996: }
2997:
2998: # ------------------------------------------ Find current version of a resource
2999:
3000: sub getversion {
3001: my $fname=&clutter(shift);
3002: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3003: return ¤tversion(&filelocation('',$fname));
3004: }
3005:
3006: sub currentversion {
3007: my $fname=shift;
3008: my $author=$fname;
3009: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3010: my ($udom,$uname)=split(/\//,$author);
3011: my $home=&homeserver($uname,$udom);
3012: if ($home eq 'no_host') {
3013: return -1;
3014: }
3015: my $answer=&reply("currentversion:$fname",$home);
3016: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3017: return -1;
3018: }
3019: return $answer;
3020: }
3021:
3022: #
3023: # Return special version number of resource if set by override, empty otherwise
3024: #
3025: sub usedversion {
3026: my $fname=shift;
3027: unless ($fname) { $fname=$env{'request.uri'}; }
3028: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3029: if ($urlversion) { return $urlversion; }
3030: return '';
3031: }
3032:
3033: # ----------------------------- Subscribe to a resource, return URL if possible
3034:
3035: sub subscribe {
3036: my $fname=shift;
3037: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3038: $fname=~s/[\n\r]//g;
3039: my $author=$fname;
3040: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3041: my ($udom,$uname)=split(/\//,$author);
3042: my $home=homeserver($uname,$udom);
3043: if ($home eq 'no_host') {
3044: return 'not_found';
3045: }
3046: my $answer=reply("sub:$fname",$home);
3047: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3048: $answer.=' by '.$home;
3049: }
3050: return $answer;
3051: }
3052:
3053: # -------------------------------------------------------------- Replicate file
3054:
3055: sub repcopy {
3056: my $filename=shift;
3057: $filename=~s/\/+/\//g;
3058: my $londocroot = $perlvar{'lonDocRoot'};
3059: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3060: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3061: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3062: $filename=~m{^/*(uploaded|editupload)/}) {
3063: return &repcopy_userfile($filename);
3064: }
3065: $filename=~s/[\n\r]//g;
3066: my $transname="$filename.in.transfer";
3067: # FIXME: this should flock
3068: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3069: my $remoteurl=subscribe($filename);
3070: if ($remoteurl =~ /^con_lost by/) {
3071: &logthis("Subscribe returned $remoteurl: $filename");
3072: return 'unavailable';
3073: } elsif ($remoteurl eq 'not_found') {
3074: #&logthis("Subscribe returned not_found: $filename");
3075: return 'not_found';
3076: } elsif ($remoteurl =~ /^rejected by/) {
3077: &logthis("Subscribe returned $remoteurl: $filename");
3078: return 'forbidden';
3079: } elsif ($remoteurl eq 'directory') {
3080: return 'ok';
3081: } else {
3082: my $author=$filename;
3083: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3084: my ($udom,$uname)=split(/\//,$author);
3085: my $home=homeserver($uname,$udom);
3086: unless ($home eq $perlvar{'lonHostID'}) {
3087: my @parts=split(/\//,$filename);
3088: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3089: if ($path ne "$londocroot/res") {
3090: &logthis("Malconfiguration for replication: $filename");
3091: return 'bad_request';
3092: }
3093: my $count;
3094: for ($count=5;$count<$#parts;$count++) {
3095: $path.="/$parts[$count]";
3096: if ((-e $path)!=1) {
3097: mkdir($path,0777);
3098: }
3099: }
3100: my $request=new HTTP::Request('GET',"$remoteurl");
3101: my $response;
3102: if ($remoteurl =~ m{/raw/}) {
3103: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3104: } else {
3105: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3106: }
3107: if ($response->is_error()) {
3108: unlink($transname);
3109: my $message=$response->status_line;
3110: &logthis("<font color=\"blue\">WARNING:"
3111: ." LWP get: $message: $filename</font>");
3112: return 'unavailable';
3113: } else {
3114: if ($remoteurl!~/\.meta$/) {
3115: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3116: my $mresponse;
3117: if ($remoteurl =~ m{/raw/}) {
3118: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3119: } else {
3120: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3121: }
3122: if ($mresponse->is_error()) {
3123: unlink($filename.'.meta');
3124: &logthis(
3125: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3126: }
3127: }
3128: rename($transname,$filename);
3129: return 'ok';
3130: }
3131: }
3132: }
3133: }
3134:
3135: # ------------------------------------------------ Get server side include body
3136: sub ssi_body {
3137: my ($filelink,%form)=@_;
3138: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3139: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3140: }
3141: my $output='';
3142: my $response;
3143: if ($filelink=~/^https?\:/) {
3144: ($output,$response)=&externalssi($filelink);
3145: } else {
3146: $filelink .= $filelink=~/\?/ ? '&' : '?';
3147: $filelink .= 'inhibitmenu=yes';
3148: ($output,$response)=&ssi($filelink,%form);
3149: }
3150: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3151: $output=~s/^.*?\<body[^\>]*\>//si;
3152: $output=~s/\<\/body\s*\>.*?$//si;
3153: if (wantarray) {
3154: return ($output, $response);
3155: } else {
3156: return $output;
3157: }
3158: }
3159:
3160: # --------------------------------------------------------- Server Side Include
3161:
3162: sub absolute_url {
3163: my ($host_name) = @_;
3164: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3165: if ($host_name eq '') {
3166: $host_name = $ENV{'SERVER_NAME'};
3167: }
3168: return $protocol.$host_name;
3169: }
3170:
3171: #
3172: # Server side include.
3173: # Parameters:
3174: # fn Possibly encrypted resource name/id.
3175: # form Hash that describes how the rendering should be done
3176: # and other things.
3177: # Returns:
3178: # Scalar context: The content of the response.
3179: # Array context: 2 element list of the content and the full response object.
3180: #
3181: sub ssi {
3182:
3183: my ($fn,%form)=@_;
3184: my $request;
3185:
3186: $form{'no_update_last_known'}=1;
3187: &Apache::lonenc::check_encrypt(\$fn);
3188: if (%form) {
3189: $request=new HTTP::Request('POST',&absolute_url().$fn);
3190: $request->content(join('&',map {
3191: my $name = escape($_);
3192: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3193: ? join("&$name=", map {escape($_) } @{$form{$_}})
3194: : &escape($form{$_}) );
3195: } keys(%form)));
3196: } else {
3197: $request=new HTTP::Request('GET',&absolute_url().$fn);
3198: }
3199:
3200: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3201: my $lonhost = $perlvar{'lonHostID'};
3202: my $islocal;
3203: if (($env{'request.course.id'}) &&
3204: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3205: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3206: ($form{'grade_symb'} ne '') &&
3207: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3208: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3209: $islocal = 1;
3210: }
3211: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3212: '','','',$islocal);
3213:
3214: if (wantarray) {
3215: return ($response->content, $response);
3216: } else {
3217: return $response->content;
3218: }
3219: }
3220:
3221: sub externalssi {
3222: my ($url)=@_;
3223: my $request=new HTTP::Request('GET',$url);
3224: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3225: if (wantarray) {
3226: return ($response->content, $response);
3227: } else {
3228: return $response->content;
3229: }
3230: }
3231:
3232:
3233: # If the local copy of a replicated resource is outdated, trigger a
3234: # connection from the homeserver to flush the delayed queue. If no update
3235: # happens, remove local copies of outdated resource (and corresponding
3236: # metadata file).
3237:
3238: sub remove_stale_resfile {
3239: my ($url) = @_;
3240: my $removed;
3241: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3242: my $audom = $1;
3243: my $auname = $2;
3244: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3245: my $homeserver = &homeserver($auname,$audom);
3246: unless (($homeserver eq 'no_host') ||
3247: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3248: my $fname = &filelocation('',$url);
3249: if (-e $fname) {
3250: my $protocol = $protocol{$homeserver};
3251: $protocol = 'http' if ($protocol ne 'https');
3252: my $hostname = &hostname($homeserver);
3253: if ($hostname) {
3254: my $uri = &declutter($url);
3255: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3256: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3257: if ($response->is_success()) {
3258: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3259: my $locmodtime = (stat($fname))[9];
3260: if ($locmodtime < $remmodtime) {
3261: my $stale;
3262: my $answer = &reply('pong',$homeserver);
3263: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3264: sleep(0.2);
3265: $locmodtime = (stat($fname))[9];
3266: if ($locmodtime < $remmodtime) {
3267: my $posstransfer = $fname.'.in.transfer';
3268: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3269: $removed = 1;
3270: } else {
3271: $stale = 1;
3272: }
3273: } else {
3274: $removed = 1;
3275: }
3276: } else {
3277: $stale = 1;
3278: }
3279: if ($stale) {
3280: unlink($fname);
3281: if ($uri!~/\.meta$/) {
3282: unlink($fname.'.meta');
3283: }
3284: &reply("unsub:$fname",$homeserver);
3285: $removed = 1;
3286: }
3287: }
3288: }
3289: }
3290: }
3291: }
3292: }
3293: }
3294: return $removed;
3295: }
3296:
3297: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3298:
3299: sub allowuploaded {
3300: my ($srcurl,$url)=@_;
3301: $url=&clutter(&declutter($url));
3302: my $dir=$url;
3303: $dir=~s/\/[^\/]+$//;
3304: my %httpref=();
3305: my $httpurl=&hreflocation('',$url);
3306: $httpref{'httpref.'.$httpurl}=$srcurl;
3307: &Apache::lonnet::appenv(\%httpref);
3308: }
3309:
3310: #
3311: # Determine if the current user should be able to edit a particular resource,
3312: # when viewing in course context.
3313: # (a) When viewing resource used to determine if "Edit" item is included in
3314: # Functions.
3315: # (b) When displaying folder contents in course editor, used to determine if
3316: # "Edit" link will be displayed alongside resource.
3317: #
3318: # input: six args -- filename (decluttered), course number, course domain,
3319: # url, symb (if registered) and group (if this is a group
3320: # item -- e.g., bulletin board, group page etc.).
3321: # output: array of five scalars --
3322: # $cfile -- url for file editing if editable on current server
3323: # $home -- homeserver of resource (i.e., for author if published,
3324: # or course if uploaded.).
3325: # $switchserver -- 1 if server switch will be needed.
3326: # $forceedit -- 1 if icon/link should be to go to edit mode
3327: # $forceview -- 1 if icon/link should be to go to view mode
3328: #
3329:
3330: sub can_edit_resource {
3331: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3332: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3333: #
3334: # For aboutme pages user can only edit his/her own.
3335: #
3336: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3337: my ($sdom,$sname) = ($1,$2);
3338: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3339: $home = $env{'user.home'};
3340: $cfile = $resurl;
3341: if ($env{'form.forceedit'}) {
3342: $forceview = 1;
3343: } else {
3344: $forceedit = 1;
3345: }
3346: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3347: } else {
3348: return;
3349: }
3350: }
3351:
3352: if ($env{'request.course.id'}) {
3353: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3354: if ($group ne '') {
3355: # if this is a group homepage or group bulletin board, check group privs
3356: my $allowed = 0;
3357: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3358: if ((&allowed('mdg',$env{'request.course.id'}.
3359: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3360: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3361: $allowed = 1;
3362: }
3363: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3364: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3365: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3366: $allowed = 1;
3367: }
3368: }
3369: if ($allowed) {
3370: $home=&homeserver($cnum,$cdom);
3371: if ($env{'form.forceedit'}) {
3372: $forceview = 1;
3373: } else {
3374: $forceedit = 1;
3375: }
3376: $cfile = $resurl;
3377: } else {
3378: return;
3379: }
3380: } else {
3381: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3382: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3383: return;
3384: }
3385: } elsif (!$crsedit) {
3386: #
3387: # No edit allowed where CC has switched to student role.
3388: #
3389: return;
3390: }
3391: }
3392: }
3393:
3394: if ($file ne '') {
3395: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3396: if (&is_course_upload($file,$cnum,$cdom)) {
3397: $uploaded = 1;
3398: $incourse = 1;
3399: if ($file =~/\.(htm|html|css|js|txt)$/) {
3400: $cfile = &hreflocation('',$file);
3401: if ($env{'form.forceedit'}) {
3402: $forceview = 1;
3403: } else {
3404: $forceedit = 1;
3405: }
3406: }
3407: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3408: $incourse = 1;
3409: if ($env{'form.forceedit'}) {
3410: $forceview = 1;
3411: } else {
3412: $forceedit = 1;
3413: }
3414: $cfile = $resurl;
3415: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3416: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3417: $incourse = 1;
3418: if ($env{'form.forceedit'}) {
3419: $forceview = 1;
3420: } else {
3421: $forceedit = 1;
3422: }
3423: $cfile = $resurl;
3424: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3425: $incourse = 1;
3426: $cfile = $resurl.'/smpedit';
3427: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3428: $incourse = 1;
3429: if ($env{'form.forceedit'}) {
3430: $forceview = 1;
3431: } else {
3432: $forceedit = 1;
3433: }
3434: $cfile = $resurl;
3435: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3436: $incourse = 1;
3437: if ($env{'form.forceedit'}) {
3438: $forceview = 1;
3439: } else {
3440: $forceedit = 1;
3441: }
3442: $cfile = $resurl;
3443: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3444: $incourse = 1;
3445: if ($env{'form.forceedit'}) {
3446: $forceview = 1;
3447: } else {
3448: $forceedit = 1;
3449: }
3450: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3451: }
3452: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3453: my $template = '/res/lib/templates/simpleproblem.problem';
3454: if (&is_on_map($template)) {
3455: $incourse = 1;
3456: $forceview = 1;
3457: $cfile = $template;
3458: }
3459: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3460: $incourse = 1;
3461: if ($env{'form.forceedit'}) {
3462: $forceview = 1;
3463: } else {
3464: $forceedit = 1;
3465: }
3466: $cfile = $resurl;
3467: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3468: $incourse = 1;
3469: if ($env{'form.forceedit'}) {
3470: $forceview = 1;
3471: } else {
3472: $forceedit = 1;
3473: }
3474: $cfile = $resurl;
3475: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3476: $incourse = 1;
3477: $forceview = 1;
3478: if ($symb) {
3479: my ($map,$id,$res)=&decode_symb($symb);
3480: $env{'request.symb'} = $symb;
3481: $cfile = &clutter($res);
3482: } else {
3483: $cfile = $env{'form.suppurl'};
3484: my $escfile = &unescape($cfile);
3485: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3486: $cfile = '/adm/wrapper'.$escfile;
3487: } else {
3488: $escfile =~ s{^http://}{};
3489: $cfile = &escape("/adm/wrapper/ext/$escfile");
3490: }
3491: }
3492: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3493: if ($env{'form.forceedit'}) {
3494: $forceview = 1;
3495: } else {
3496: $forceedit = 1;
3497: }
3498: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3499: }
3500: }
3501: if ($uploaded || $incourse) {
3502: $home=&homeserver($cnum,$cdom);
3503: } elsif ($file !~ m{/$}) {
3504: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3505: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3506: # Check that the user has permission to edit this resource
3507: my $setpriv = 1;
3508: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3509: if (defined($cfudom)) {
3510: $home=&homeserver($cfuname,$cfudom);
3511: $cfile=$file;
3512: }
3513: }
3514: if (($cfile ne '') && (!$incourse || $uploaded) &&
3515: (($home ne '') && ($home ne 'no_host'))) {
3516: my @ids=¤t_machine_ids();
3517: unless (grep(/^\Q$home\E$/,@ids)) {
3518: $switchserver=1;
3519: }
3520: }
3521: }
3522: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3523: }
3524:
3525: sub is_course_upload {
3526: my ($file,$cnum,$cdom) = @_;
3527: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3528: $uploadpath =~ s{^\/}{};
3529: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3530: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3531: return 1;
3532: }
3533: return;
3534: }
3535:
3536: sub in_course {
3537: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3538: if ($hideprivileged) {
3539: my $skipuser;
3540: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3541: my @possdoms = ($cdom);
3542: if ($coursehash{'checkforpriv'}) {
3543: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3544: }
3545: if (&privileged($uname,$udom,\@possdoms)) {
3546: $skipuser = 1;
3547: if ($coursehash{'nothideprivileged'}) {
3548: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3549: my $user;
3550: if ($item =~ /:/) {
3551: $user = $item;
3552: } else {
3553: $user = join(':',split(/[\@]/,$item));
3554: }
3555: if ($user eq $uname.':'.$udom) {
3556: undef($skipuser);
3557: last;
3558: }
3559: }
3560: }
3561: if ($skipuser) {
3562: return 0;
3563: }
3564: }
3565: }
3566: $type ||= 'any';
3567: if (!defined($cdom) || !defined($cnum)) {
3568: my $cid = $env{'request.course.id'};
3569: $cdom = $env{'course.'.$cid.'.domain'};
3570: $cnum = $env{'course.'.$cid.'.num'};
3571: }
3572: my $typesref;
3573: if (($type eq 'any') || ($type eq 'all')) {
3574: $typesref = ['active','previous','future'];
3575: } elsif ($type eq 'previous' || $type eq 'future') {
3576: $typesref = [$type];
3577: }
3578: my %roles = &get_my_roles($uname,$udom,'userroles',
3579: $typesref,undef,[$cdom]);
3580: my ($tmp) = keys(%roles);
3581: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3582: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3583: if (@course_roles > 0) {
3584: return 1;
3585: }
3586: return 0;
3587: }
3588:
3589: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3590: # input: action, courseID, current domain, intended
3591: # path to file, source of file, instruction to parse file for objects,
3592: # ref to hash for embedded objects,
3593: # ref to hash for codebase of java objects.
3594: # reference to scalar to accommodate mime type determined
3595: # from File::MMagic if $parser = parse.
3596: #
3597: # output: url to file (if action was uploaddoc),
3598: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3599: #
3600: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3601: # course.
3602: #
3603: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3604: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3605: # course's home server.
3606: #
3607: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3608: # be copied from $source (current location) to
3609: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3610: # and will then be copied to
3611: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3612: # course's home server.
3613: #
3614: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3615: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3616: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3617: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3618: # in course's home server.
3619: #
3620:
3621: sub process_coursefile {
3622: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3623: $mimetype)=@_;
3624: my $fetchresult;
3625: my $home=&homeserver($docuname,$docudom);
3626: if ($action eq 'propagate') {
3627: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3628: $home);
3629: } else {
3630: my $fpath = '';
3631: my $fname = $file;
3632: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3633: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3634: my $filepath = &build_filepath($fpath);
3635: if ($action eq 'copy') {
3636: if ($source eq '') {
3637: $fetchresult = 'no source file';
3638: return $fetchresult;
3639: } else {
3640: my $destination = $filepath.'/'.$fname;
3641: rename($source,$destination);
3642: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3643: $home);
3644: }
3645: } elsif ($action eq 'uploaddoc') {
3646: open(my $fh,'>',$filepath.'/'.$fname);
3647: print $fh $env{'form.'.$source};
3648: close($fh);
3649: if ($parser eq 'parse') {
3650: my $mm = new File::MMagic;
3651: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3652: if ($type eq 'text/html') {
3653: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3654: unless ($parse_result eq 'ok') {
3655: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3656: }
3657: }
3658: if (ref($mimetype)) {
3659: $$mimetype = $type;
3660: }
3661: }
3662: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3663: $home);
3664: if ($fetchresult eq 'ok') {
3665: return '/uploaded/'.$fpath.'/'.$fname;
3666: } else {
3667: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3668: ' to host '.$home.': '.$fetchresult);
3669: return '/adm/notfound.html';
3670: }
3671: }
3672: }
3673: unless ( $fetchresult eq 'ok') {
3674: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3675: ' to host '.$home.': '.$fetchresult);
3676: }
3677: return $fetchresult;
3678: }
3679:
3680: sub build_filepath {
3681: my ($fpath) = @_;
3682: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3683: unless ($fpath eq '') {
3684: my @parts=split('/',$fpath);
3685: foreach my $part (@parts) {
3686: $filepath.= '/'.$part;
3687: if ((-e $filepath)!=1) {
3688: mkdir($filepath,0777);
3689: }
3690: }
3691: }
3692: return $filepath;
3693: }
3694:
3695: sub store_edited_file {
3696: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3697: my $file = $primary_url;
3698: $file =~ s#^/uploaded/$docudom/$docuname/##;
3699: my $fpath = '';
3700: my $fname = $file;
3701: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3702: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3703: my $filepath = &build_filepath($fpath);
3704: open(my $fh,'>',$filepath.'/'.$fname);
3705: print $fh $content;
3706: close($fh);
3707: my $home=&homeserver($docuname,$docudom);
3708: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3709: $home);
3710: if ($$fetchresult eq 'ok') {
3711: return '/uploaded/'.$fpath.'/'.$fname;
3712: } else {
3713: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3714: ' to host '.$home.': '.$$fetchresult);
3715: return '/adm/notfound.html';
3716: }
3717: }
3718:
3719: sub clean_filename {
3720: my ($fname,$args)=@_;
3721: # Replace Windows backslashes by forward slashes
3722: $fname=~s/\\/\//g;
3723: if (!$args->{'keep_path'}) {
3724: # Get rid of everything but the actual filename
3725: $fname=~s/^.*\/([^\/]+)$/$1/;
3726: }
3727: # Replace spaces by underscores
3728: $fname=~s/\s+/\_/g;
3729: # Replace all other weird characters by nothing
3730: $fname=~s{[^/\w\.\-]}{}g;
3731: # Replace all .\d. sequences with _\d. so they no longer look like version
3732: # numbers
3733: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3734: return $fname;
3735: }
3736: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3737: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3738: # image with the same aspect ratio as the original, but with dimensions which do
3739: # not exceed $resizewidth and $resizeheight.
3740:
3741: sub resizeImage {
3742: my ($img_path,$resizewidth,$resizeheight) = @_;
3743: my $ima = Image::Magick->new;
3744: my $resized;
3745: if (-e $img_path) {
3746: $ima->Read($img_path);
3747: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3748: my $width = $ima->Get('width');
3749: my $height = $ima->Get('height');
3750: if ($width > $resizewidth) {
3751: my $factor = $width/$resizewidth;
3752: my $newheight = $height/$factor;
3753: $ima->Scale(width=>$resizewidth,height=>$newheight);
3754: $resized = 1;
3755: }
3756: }
3757: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3758: my $width = $ima->Get('width');
3759: my $height = $ima->Get('height');
3760: if ($height > $resizeheight) {
3761: my $factor = $height/$resizeheight;
3762: my $newwidth = $width/$factor;
3763: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3764: $resized = 1;
3765: }
3766: }
3767: if ($resized) {
3768: $ima->Write($img_path);
3769: }
3770: }
3771: return;
3772: }
3773:
3774: # --------------- Take an uploaded file and put it into the userfiles directory
3775: # input: $formname - the contents of the file are in $env{"form.$formname"}
3776: # the desired filename is in $env{"form.$formname.filename"}
3777: # $context - possible values: coursedoc, existingfile, overwrite,
3778: # canceloverwrite, or ''.
3779: # if 'coursedoc': upload to the current course
3780: # if 'existingfile': write file to tmp/overwrites directory
3781: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3782: # $context is passed as argument to &finishuserfileupload
3783: # $subdir - directory in userfile to store the file into
3784: # $parser - instruction to parse file for objects ($parser = parse)
3785: # $allfiles - reference to hash for embedded objects
3786: # $codebase - reference to hash for codebase of java objects
3787: # $desuname - username for permanent storage of uploaded file
3788: # $dsetudom - domain for permanaent storage of uploaded file
3789: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3790: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3791: # $resizewidth - width (pixels) to which to resize uploaded image
3792: # $resizeheight - height (pixels) to which to resize uploaded image
3793: # $mimetype - reference to scalar to accommodate mime type determined
3794: # from File::MMagic.
3795: #
3796: # output: url of file in userspace, or error: <message>
3797: # or /adm/notfound.html if failure to upload occurse
3798:
3799: sub userfileupload {
3800: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3801: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3802: if (!defined($subdir)) { $subdir='unknown'; }
3803: my $fname=$env{'form.'.$formname.'.filename'};
3804: $fname=&clean_filename($fname);
3805: # See if there is anything left
3806: unless ($fname) { return 'error: no uploaded file'; }
3807: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3808: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3809: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3810: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3811: my $now = time;
3812: my $filepath;
3813: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3814: $filepath = 'tmp/helprequests/'.$now;
3815: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3816: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3817: '_'.$env{'user.domain'}.'/pending';
3818: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3819: my ($docuname,$docudom);
3820: if ($destudom =~ /^$match_domain$/) {
3821: $docudom = $destudom;
3822: } else {
3823: $docudom = $env{'user.domain'};
3824: }
3825: if ($destuname =~ /^$match_username$/) {
3826: $docuname = $destuname;
3827: } else {
3828: $docuname = $env{'user.name'};
3829: }
3830: if (exists($env{'form.group'})) {
3831: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3832: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3833: }
3834: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3835: if ($context eq 'canceloverwrite') {
3836: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3837: if (-e $tempfile) {
3838: my @info = stat($tempfile);
3839: if ($info[9] eq $env{'form.timestamp'}) {
3840: unlink($tempfile);
3841: }
3842: }
3843: return;
3844: }
3845: }
3846: # Create the directory if not present
3847: my @parts=split(/\//,$filepath);
3848: my $fullpath = $perlvar{'lonDaemons'};
3849: for (my $i=0;$i<@parts;$i++) {
3850: $fullpath .= '/'.$parts[$i];
3851: if ((-e $fullpath)!=1) {
3852: mkdir($fullpath,0777);
3853: }
3854: }
3855: open(my $fh,'>',$fullpath.'/'.$fname);
3856: print $fh $env{'form.'.$formname};
3857: close($fh);
3858: if ($context eq 'existingfile') {
3859: my @info = stat($fullpath.'/'.$fname);
3860: return ($fullpath.'/'.$fname,$info[9]);
3861: } else {
3862: return $fullpath.'/'.$fname;
3863: }
3864: }
3865: if ($subdir eq 'scantron') {
3866: $fname = 'scantron_orig_'.$fname;
3867: } else {
3868: $fname="$subdir/$fname";
3869: }
3870: if ($context eq 'coursedoc') {
3871: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3872: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3873: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3874: return &finishuserfileupload($docuname,$docudom,
3875: $formname,$fname,$parser,$allfiles,
3876: $codebase,$thumbwidth,$thumbheight,
3877: $resizewidth,$resizeheight,$context,$mimetype);
3878: } else {
3879: if ($env{'form.folder'}) {
3880: $fname=$env{'form.folder'}.'/'.$fname;
3881: }
3882: return &process_coursefile('uploaddoc',$docuname,$docudom,
3883: $fname,$formname,$parser,
3884: $allfiles,$codebase,$mimetype);
3885: }
3886: } elsif (defined($destuname)) {
3887: my $docuname=$destuname;
3888: my $docudom=$destudom;
3889: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3890: $parser,$allfiles,$codebase,
3891: $thumbwidth,$thumbheight,
3892: $resizewidth,$resizeheight,$context,$mimetype);
3893: } else {
3894: my $docuname=$env{'user.name'};
3895: my $docudom=$env{'user.domain'};
3896: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3897: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3898: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3899: }
3900: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3901: $parser,$allfiles,$codebase,
3902: $thumbwidth,$thumbheight,
3903: $resizewidth,$resizeheight,$context,$mimetype);
3904: }
3905: }
3906:
3907: sub finishuserfileupload {
3908: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3909: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3910: my $path=$docudom.'/'.$docuname.'/';
3911: my $filepath=$perlvar{'lonDocRoot'};
3912:
3913: my ($fnamepath,$file,$fetchthumb);
3914: $file=$fname;
3915: if ($fname=~m|/|) {
3916: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3917: $path.=$fnamepath.'/';
3918: }
3919: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3920: my $count;
3921: for ($count=4;$count<=$#parts;$count++) {
3922: $filepath.="/$parts[$count]";
3923: if ((-e $filepath)!=1) {
3924: mkdir($filepath,0777);
3925: }
3926: }
3927:
3928: # Save the file
3929: {
3930: if (!open(FH,'>',$filepath.'/'.$file)) {
3931: &logthis('Failed to create '.$filepath.'/'.$file);
3932: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3933: return '/adm/notfound.html';
3934: }
3935: if ($context eq 'overwrite') {
3936: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3937: my $target = $filepath.'/'.$file;
3938: if (-e $source) {
3939: my @info = stat($source);
3940: if ($info[9] eq $env{'form.timestamp'}) {
3941: unless (&File::Copy::move($source,$target)) {
3942: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3943: return "Moving from $source failed";
3944: }
3945: } else {
3946: return "Temporary file: $source had unexpected date/time for last modification";
3947: }
3948: } else {
3949: return "Temporary file: $source missing";
3950: }
3951: } elsif (!print FH ($env{'form.'.$formname})) {
3952: &logthis('Failed to write to '.$filepath.'/'.$file);
3953: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3954: return '/adm/notfound.html';
3955: }
3956: close(FH);
3957: if ($resizewidth && $resizeheight) {
3958: my $mm = new File::MMagic;
3959: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3960: if ($mime_type =~ m{^image/}) {
3961: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3962: }
3963: }
3964: }
3965: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3966: if (ref($mimetype)) {
3967: if ($$mimetype eq '') {
3968: my $mm = new File::MMagic;
3969: my $type = $mm->checktype_filename($filepath.'/'.$file);
3970: $$mimetype = $type;
3971: }
3972: }
3973: }
3974: if ($parser eq 'parse') {
3975: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3976: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3977: $allfiles,$codebase);
3978: unless ($parse_result eq 'ok') {
3979: &logthis('Failed to parse '.$filepath.$file.
3980: ' for embedded media: '.$parse_result);
3981: }
3982: }
3983: }
3984: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3985: my $input = $filepath.'/'.$file;
3986: my $output = $filepath.'/'.'tn-'.$file;
3987: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3988: my @args = ('convert','-sample',$thumbsize,$input,$output);
3989: system({$args[0]} @args);
3990: if (-e $filepath.'/'.'tn-'.$file) {
3991: $fetchthumb = 1;
3992: }
3993: }
3994:
3995: # Notify homeserver to grep it
3996: #
3997: my $docuhome=&homeserver($docuname,$docudom);
3998: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3999: if ($fetchresult eq 'ok') {
4000: if ($fetchthumb) {
4001: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4002: if ($thumbresult ne 'ok') {
4003: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4004: $docuhome.': '.$thumbresult);
4005: }
4006: }
4007: #
4008: # Return the URL to it
4009: return '/uploaded/'.$path.$file;
4010: } else {
4011: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4012: ': '.$fetchresult);
4013: return '/adm/notfound.html';
4014: }
4015: }
4016:
4017: sub extract_embedded_items {
4018: my ($fullpath,$allfiles,$codebase,$content) = @_;
4019: my @state = ();
4020: my (%lastids,%related,%shockwave,%flashvars);
4021: my %javafiles = (
4022: codebase => '',
4023: code => '',
4024: archive => ''
4025: );
4026: my %mediafiles = (
4027: src => '',
4028: movie => '',
4029: );
4030: my $p;
4031: if ($content) {
4032: $p = HTML::LCParser->new($content);
4033: } else {
4034: $p = HTML::LCParser->new($fullpath);
4035: }
4036: while (my $t=$p->get_token()) {
4037: if ($t->[0] eq 'S') {
4038: my ($tagname, $attr) = ($t->[1],$t->[2]);
4039: push(@state, $tagname);
4040: if (lc($tagname) eq 'allow') {
4041: &add_filetype($allfiles,$attr->{'src'},'src');
4042: }
4043: if (lc($tagname) eq 'img') {
4044: &add_filetype($allfiles,$attr->{'src'},'src');
4045: }
4046: if (lc($tagname) eq 'a') {
4047: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4048: &add_filetype($allfiles,$attr->{'href'},'href');
4049: }
4050: }
4051: if (lc($tagname) eq 'script') {
4052: my $src;
4053: if ($attr->{'archive'} =~ /\.jar$/i) {
4054: &add_filetype($allfiles,$attr->{'archive'},'archive');
4055: } else {
4056: if ($attr->{'src'} ne '') {
4057: $src = $attr->{'src'};
4058: &add_filetype($allfiles,$src,'src');
4059: }
4060: }
4061: my $text = $p->get_trimmed_text();
4062: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4063: my @swfargs = split(/,/,$1);
4064: foreach my $item (@swfargs) {
4065: $item =~ s/["']//g;
4066: $item =~ s/^\s+//;
4067: $item =~ s/\s+$//;
4068: }
4069: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4070: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4071: push(@{$related{$swfargs[0]}},$swfargs[2]);
4072: } else {
4073: $related{$swfargs[0]} = [$swfargs[2]];
4074: }
4075: }
4076: }
4077: }
4078: if (lc($tagname) eq 'link') {
4079: if (lc($attr->{'rel'}) eq 'stylesheet') {
4080: &add_filetype($allfiles,$attr->{'href'},'href');
4081: }
4082: }
4083: if (lc($tagname) eq 'object' ||
4084: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4085: foreach my $item (keys(%javafiles)) {
4086: $javafiles{$item} = '';
4087: }
4088: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4089: $lastids{lc($tagname)} = $attr->{'id'};
4090: }
4091: }
4092: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4093: my $name = lc($attr->{'name'});
4094: foreach my $item (keys(%javafiles)) {
4095: if ($name eq $item) {
4096: $javafiles{$item} = $attr->{'value'};
4097: last;
4098: }
4099: }
4100: my $pathfrom;
4101: foreach my $item (keys(%mediafiles)) {
4102: if ($name eq $item) {
4103: $pathfrom = $attr->{'value'};
4104: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4105: &add_filetype($allfiles,$pathfrom,$name);
4106: last;
4107: }
4108: }
4109: if ($name eq 'flashvars') {
4110: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4111: }
4112: if ($pathfrom ne '') {
4113: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4114: $pathfrom);
4115: }
4116: }
4117: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4118: foreach my $item (keys(%javafiles)) {
4119: if ($attr->{$item}) {
4120: $javafiles{$item} = $attr->{$item};
4121: last;
4122: }
4123: }
4124: foreach my $item (keys(%mediafiles)) {
4125: if ($attr->{$item}) {
4126: &add_filetype($allfiles,$attr->{$item},$item);
4127: last;
4128: }
4129: }
4130: if (lc($tagname) eq 'embed') {
4131: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4132: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4133: $attr->{'src'});
4134: }
4135: }
4136: }
4137: if (lc($tagname) eq 'iframe') {
4138: my $src = $attr->{'src'} ;
4139: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4140: &add_filetype($allfiles,$src,'src');
4141: } elsif ($src =~ m{^/}) {
4142: if ($env{'request.course.id'}) {
4143: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4144: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4145: my $url = &hreflocation('',$fullpath);
4146: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4147: my $relpath = $1;
4148: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4149: &add_filetype($allfiles,$1,'src');
4150: }
4151: }
4152: }
4153: }
4154: }
4155: if ($t->[4] =~ m{/>$}) {
4156: pop(@state);
4157: }
4158: } elsif ($t->[0] eq 'E') {
4159: my ($tagname) = ($t->[1]);
4160: if ($javafiles{'codebase'} ne '') {
4161: $javafiles{'codebase'} .= '/';
4162: }
4163: if (lc($tagname) eq 'applet' ||
4164: lc($tagname) eq 'object' ||
4165: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4166: ) {
4167: foreach my $item (keys(%javafiles)) {
4168: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4169: my $file=$javafiles{'codebase'}.$javafiles{$item};
4170: &add_filetype($allfiles,$file,$item);
4171: }
4172: }
4173: }
4174: pop @state;
4175: }
4176: }
4177: foreach my $id (sort(keys(%flashvars))) {
4178: if ($shockwave{$id} ne '') {
4179: my @pairs = split(/\&/,$flashvars{$id});
4180: foreach my $pair (@pairs) {
4181: my ($key,$value) = split(/\=/,$pair);
4182: if ($key eq 'thumb') {
4183: &add_filetype($allfiles,$value,$key);
4184: } elsif ($key eq 'content') {
4185: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4186: my ($ext) = ($value =~ /\.([^.]+)$/);
4187: if ($ext ne '') {
4188: &add_filetype($allfiles,$path.$value,$ext);
4189: }
4190: }
4191: }
4192: }
4193: }
4194: return 'ok';
4195: }
4196:
4197: sub add_filetype {
4198: my ($allfiles,$file,$type)=@_;
4199: if (exists($allfiles->{$file})) {
4200: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4201: push(@{$allfiles->{$file}}, &escape($type));
4202: }
4203: } else {
4204: @{$allfiles->{$file}} = (&escape($type));
4205: }
4206: }
4207:
4208: sub embedded_dependency {
4209: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4210: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4211: if (($identifier ne '') &&
4212: (ref($related->{$identifier}) eq 'ARRAY') &&
4213: ($pathfrom ne '')) {
4214: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4215: foreach my $dep (@{$related->{$identifier}}) {
4216: &add_filetype($allfiles,$path.$dep,'object');
4217: }
4218: }
4219: }
4220: return;
4221: }
4222:
4223: sub removeuploadedurl {
4224: my ($url)=@_;
4225: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4226: return &removeuserfile($uname,$udom,$fname);
4227: }
4228:
4229: sub removeuserfile {
4230: my ($docuname,$docudom,$fname)=@_;
4231: my $home=&homeserver($docuname,$docudom);
4232: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4233: if ($result eq 'ok') {
4234: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4235: my $metafile = $fname.'.meta';
4236: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4237: my $url = "/uploaded/$docudom/$docuname/$fname";
4238: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4239: my $sqlresult =
4240: &update_portfolio_table($docuname,$docudom,$file,
4241: 'portfolio_metadata',$group,
4242: 'delete');
4243: }
4244: }
4245: return $result;
4246: }
4247:
4248: sub mkdiruserfile {
4249: my ($docuname,$docudom,$dir)=@_;
4250: my $home=&homeserver($docuname,$docudom);
4251: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4252: }
4253:
4254: sub renameuserfile {
4255: my ($docuname,$docudom,$old,$new)=@_;
4256: my $home=&homeserver($docuname,$docudom);
4257: my $result = &reply("renameuserfile:$docudom:$docuname:".
4258: &escape("$old").':'.&escape("$new"),$home);
4259: if ($result eq 'ok') {
4260: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4261: my $oldmeta = $old.'.meta';
4262: my $newmeta = $new.'.meta';
4263: my $metaresult =
4264: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4265: my $url = "/uploaded/$docudom/$docuname/$old";
4266: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4267: my $sqlresult =
4268: &update_portfolio_table($docuname,$docudom,$file,
4269: 'portfolio_metadata',$group,
4270: 'delete');
4271: }
4272: }
4273: return $result;
4274: }
4275:
4276: # ------------------------------------------------------------------------- Log
4277:
4278: sub log {
4279: my ($dom,$nam,$hom,$what)=@_;
4280: return critical("log:$dom:$nam:$what",$hom);
4281: }
4282:
4283: # ------------------------------------------------------------------ Course Log
4284: #
4285: # This routine flushes several buffers of non-mission-critical nature
4286: #
4287:
4288: sub flushcourselogs {
4289: &logthis('Flushing log buffers');
4290: #
4291: # course logs
4292: # This is a log of all transactions in a course, which can be used
4293: # for data mining purposes
4294: #
4295: # It also collects the courseid database, which lists last transaction
4296: # times and course titles for all courseids
4297: #
4298: my %courseidbuffer=();
4299: foreach my $crsid (keys(%courselogs)) {
4300: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4301: &escape($courselogs{$crsid}),
4302: $coursehombuf{$crsid}) eq 'ok') {
4303: delete $courselogs{$crsid};
4304: } else {
4305: &logthis('Failed to flush log buffer for '.$crsid);
4306: if (length($courselogs{$crsid})>40000) {
4307: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4308: " exceeded maximum size, deleting.</font>");
4309: delete $courselogs{$crsid};
4310: }
4311: }
4312: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4313: 'description' => $coursedescrbuf{$crsid},
4314: 'inst_code' => $courseinstcodebuf{$crsid},
4315: 'type' => $coursetypebuf{$crsid},
4316: 'owner' => $courseownerbuf{$crsid},
4317: };
4318: }
4319: #
4320: # Write course id database (reverse lookup) to homeserver of courses
4321: # Is used in pickcourse
4322: #
4323: foreach my $crs_home (keys(%courseidbuffer)) {
4324: my $response = &courseidput(&host_domain($crs_home),
4325: $courseidbuffer{$crs_home},
4326: $crs_home,'timeonly');
4327: }
4328: #
4329: # File accesses
4330: # Writes to the dynamic metadata of resources to get hit counts, etc.
4331: #
4332: foreach my $entry (keys(%accesshash)) {
4333: if ($entry =~ /___count$/) {
4334: my ($dom,$name);
4335: ($dom,$name,undef)=
4336: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4337: if (! defined($dom) || $dom eq '' ||
4338: ! defined($name) || $name eq '') {
4339: my $cid = $env{'request.course.id'};
4340: $dom = $env{'request.'.$cid.'.domain'};
4341: $name = $env{'request.'.$cid.'.num'};
4342: }
4343: my $value = $accesshash{$entry};
4344: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4345: my %temphash=($url => $value);
4346: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4347: if ($result eq 'ok') {
4348: delete $accesshash{$entry};
4349: }
4350: } else {
4351: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4352: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4353: my %temphash=($entry => $accesshash{$entry});
4354: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4355: delete $accesshash{$entry};
4356: }
4357: }
4358: }
4359: #
4360: # Roles
4361: # Reverse lookup of user roles for course faculty/staff and co-authorship
4362: #
4363: foreach my $entry (keys(%userrolehash)) {
4364: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4365: split(/\:/,$entry);
4366: if (&Apache::lonnet::put('nohist_userroles',
4367: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4368: $rudom,$runame) eq 'ok') {
4369: delete $userrolehash{$entry};
4370: }
4371: }
4372: #
4373: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4374: #
4375: my %domrolebuffer = ();
4376: foreach my $entry (keys(%domainrolehash)) {
4377: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4378: if ($domrolebuffer{$rudom}) {
4379: $domrolebuffer{$rudom}.='&'.&escape($entry).
4380: '='.&escape($domainrolehash{$entry});
4381: } else {
4382: $domrolebuffer{$rudom}.=&escape($entry).
4383: '='.&escape($domainrolehash{$entry});
4384: }
4385: delete $domainrolehash{$entry};
4386: }
4387: foreach my $dom (keys(%domrolebuffer)) {
4388: my %servers;
4389: if (defined(&domain($dom,'primary'))) {
4390: my $primary=&domain($dom,'primary');
4391: my $hostname=&hostname($primary);
4392: $servers{$primary} = $hostname;
4393: } else {
4394: %servers = &get_servers($dom,'library');
4395: }
4396: foreach my $tryserver (keys(%servers)) {
4397: if (&reply('domroleput:'.$dom.':'.
4398: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4399: last;
4400: } else {
4401: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4402: }
4403: }
4404: }
4405: $dumpcount++;
4406: }
4407:
4408: sub courselog {
4409: my $what=shift;
4410: $what=time.':'.$what;
4411: unless ($env{'request.course.id'}) { return ''; }
4412: $coursedombuf{$env{'request.course.id'}}=
4413: $env{'course.'.$env{'request.course.id'}.'.domain'};
4414: $coursenumbuf{$env{'request.course.id'}}=
4415: $env{'course.'.$env{'request.course.id'}.'.num'};
4416: $coursehombuf{$env{'request.course.id'}}=
4417: $env{'course.'.$env{'request.course.id'}.'.home'};
4418: $coursedescrbuf{$env{'request.course.id'}}=
4419: $env{'course.'.$env{'request.course.id'}.'.description'};
4420: $courseinstcodebuf{$env{'request.course.id'}}=
4421: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4422: $courseownerbuf{$env{'request.course.id'}}=
4423: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4424: $coursetypebuf{$env{'request.course.id'}}=
4425: $env{'course.'.$env{'request.course.id'}.'.type'};
4426: if (defined $courselogs{$env{'request.course.id'}}) {
4427: $courselogs{$env{'request.course.id'}}.='&'.$what;
4428: } else {
4429: $courselogs{$env{'request.course.id'}}.=$what;
4430: }
4431: if (length($courselogs{$env{'request.course.id'}})>4048) {
4432: &flushcourselogs();
4433: }
4434: }
4435:
4436: sub courseacclog {
4437: my $fnsymb=shift;
4438: unless ($env{'request.course.id'}) { return ''; }
4439: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4440: if ($fnsymb=~/$LONCAPA::assess_re/) {
4441: $what.=':POST';
4442: # FIXME: Probably ought to escape things....
4443: foreach my $key (keys(%env)) {
4444: if ($key=~/^form\.(.*)/) {
4445: my $formitem = $1;
4446: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4447: $what.=':'.$formitem.'='.$env{$key};
4448: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4449: $what.=':'.$formitem.'='.$env{$key};
4450: }
4451: }
4452: }
4453: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4454: # FIXME: We should not be depending on a form parameter that someone
4455: # editing lonsearchcat.pm might change in the future.
4456: if ($env{'form.phase'} eq 'course_search') {
4457: $what.= ':POST';
4458: # FIXME: Probably ought to escape things....
4459: foreach my $element ('courseexp','crsfulltext','crsrelated',
4460: 'crsdiscuss') {
4461: $what.=':'.$element.'='.$env{'form.'.$element};
4462: }
4463: }
4464: }
4465: &courselog($what);
4466: }
4467:
4468: sub countacc {
4469: my $url=&declutter(shift);
4470: return if (! defined($url) || $url eq '');
4471: unless ($env{'request.course.id'}) { return ''; }
4472: #
4473: # Mark that this url was used in this course
4474: #
4475: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4476: #
4477: # Increase the access count for this resource in this child process
4478: #
4479: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4480: $accesshash{$key}++;
4481: }
4482:
4483: sub linklog {
4484: my ($from,$to)=@_;
4485: $from=&declutter($from);
4486: $to=&declutter($to);
4487: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4488: $accesshash{$to.'___'.$from.'___goto'}=1;
4489: }
4490:
4491: sub statslog {
4492: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4493: if ($users<2) { return; }
4494: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4495: 'course' => $env{'request.course.id'},
4496: 'sections' => '"all"',
4497: 'num_students' => $users,
4498: 'part' => $part,
4499: 'symb' => $symb,
4500: 'mean_tries' => $av_attempts,
4501: 'deg_of_diff' => $degdiff});
4502: foreach my $key (keys(%dynstore)) {
4503: $accesshash{$key}=$dynstore{$key};
4504: }
4505: }
4506:
4507: sub userrolelog {
4508: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4509: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4510: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4511: $userrolehash
4512: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4513: =$tend.':'.$tstart;
4514: }
4515: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4516: $userrolehash
4517: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4518: =$tend.':'.$tstart;
4519: }
4520: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4521: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4522: $domainrolehash
4523: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4524: = $tend.':'.$tstart;
4525: }
4526: }
4527:
4528: sub courserolelog {
4529: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4530: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4531: my $cdom = $1;
4532: my $cnum = $2;
4533: my $sec = $3;
4534: my $namespace = 'rolelog';
4535: my %storehash = (
4536: role => $trole,
4537: start => $tstart,
4538: end => $tend,
4539: selfenroll => $selfenroll,
4540: context => $context,
4541: );
4542: if ($trole eq 'gr') {
4543: $namespace = 'groupslog';
4544: $storehash{'group'} = $sec;
4545: } else {
4546: $storehash{'section'} = $sec;
4547: }
4548: &write_log('course',$namespace,\%storehash,$delflag,$username,
4549: $domain,$cnum,$cdom);
4550: if (($trole ne 'st') || ($sec ne '')) {
4551: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4552: }
4553: }
4554: return;
4555: }
4556:
4557: sub domainrolelog {
4558: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4559: if ($area =~ m{^/($match_domain)/$}) {
4560: my $cdom = $1;
4561: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4562: my $namespace = 'rolelog';
4563: my %storehash = (
4564: role => $trole,
4565: start => $tstart,
4566: end => $tend,
4567: context => $context,
4568: );
4569: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4570: $domain,$domconfiguser,$cdom);
4571: }
4572: return;
4573:
4574: }
4575:
4576: sub coauthorrolelog {
4577: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4578: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4579: my $audom = $1;
4580: my $auname = $2;
4581: my $namespace = 'rolelog';
4582: my %storehash = (
4583: role => $trole,
4584: start => $tstart,
4585: end => $tend,
4586: context => $context,
4587: );
4588: &write_log('author',$namespace,\%storehash,$delflag,$username,
4589: $domain,$auname,$audom);
4590: }
4591: return;
4592: }
4593:
4594: sub get_course_adv_roles {
4595: my ($cid,$codes) = @_;
4596: $cid=$env{'request.course.id'} unless (defined($cid));
4597: my %coursehash=&coursedescription($cid);
4598: my $crstype = &Apache::loncommon::course_type($cid);
4599: my %nothide=();
4600: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4601: if ($user !~ /:/) {
4602: $nothide{join(':',split(/[\@]/,$user))}=1;
4603: } else {
4604: $nothide{$user}=1;
4605: }
4606: }
4607: my @possdoms = ($coursehash{'domain'});
4608: if ($coursehash{'checkforpriv'}) {
4609: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4610: }
4611: my %returnhash=();
4612: my %dumphash=
4613: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4614: my $now=time;
4615: my %privileged;
4616: foreach my $entry (keys(%dumphash)) {
4617: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4618: if (($tstart) && ($tstart<0)) { next; }
4619: if (($tend) && ($tend<$now)) { next; }
4620: if (($tstart) && ($now<$tstart)) { next; }
4621: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4622: if ($username eq '' || $domain eq '') { next; }
4623: if ((&privileged($username,$domain,\@possdoms)) &&
4624: (!$nothide{$username.':'.$domain})) { next; }
4625: if ($role eq 'cr') { next; }
4626: if ($codes) {
4627: if ($section) { $role .= ':'.$section; }
4628: if ($returnhash{$role}) {
4629: $returnhash{$role}.=','.$username.':'.$domain;
4630: } else {
4631: $returnhash{$role}=$username.':'.$domain;
4632: }
4633: } else {
4634: my $key=&plaintext($role,$crstype);
4635: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4636: if ($returnhash{$key}) {
4637: $returnhash{$key}.=','.$username.':'.$domain;
4638: } else {
4639: $returnhash{$key}=$username.':'.$domain;
4640: }
4641: }
4642: }
4643: return %returnhash;
4644: }
4645:
4646: sub get_my_roles {
4647: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4648: unless (defined($uname)) { $uname=$env{'user.name'}; }
4649: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4650: my (%dumphash,%nothide);
4651: if ($context eq 'userroles') {
4652: %dumphash = &dump('roles',$udom,$uname);
4653: } else {
4654: %dumphash = &dump('nohist_userroles',$udom,$uname);
4655: if ($hidepriv) {
4656: my %coursehash=&coursedescription($udom.'_'.$uname);
4657: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4658: if ($user !~ /:/) {
4659: $nothide{join(':',split(/[\@]/,$user))} = 1;
4660: } else {
4661: $nothide{$user} = 1;
4662: }
4663: }
4664: }
4665: }
4666: my %returnhash=();
4667: my $now=time;
4668: my %privileged;
4669: foreach my $entry (keys(%dumphash)) {
4670: my ($role,$tend,$tstart);
4671: if ($context eq 'userroles') {
4672: next if ($entry =~ /^rolesdef/);
4673: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4674: } else {
4675: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4676: }
4677: if (($tstart) && ($tstart<0)) { next; }
4678: my $status = 'active';
4679: if (($tend) && ($tend<=$now)) {
4680: $status = 'previous';
4681: }
4682: if (($tstart) && ($now<$tstart)) {
4683: $status = 'future';
4684: }
4685: if (ref($types) eq 'ARRAY') {
4686: if (!grep(/^\Q$status\E$/,@{$types})) {
4687: next;
4688: }
4689: } else {
4690: if ($status ne 'active') {
4691: next;
4692: }
4693: }
4694: my ($rolecode,$username,$domain,$section,$area);
4695: if ($context eq 'userroles') {
4696: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4697: (undef,$domain,$username,$section) = split(/\//,$area);
4698: } else {
4699: ($role,$username,$domain,$section) = split(/\:/,$entry);
4700: }
4701: if (ref($roledoms) eq 'ARRAY') {
4702: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4703: next;
4704: }
4705: }
4706: if (ref($roles) eq 'ARRAY') {
4707: if (!grep(/^\Q$role\E$/,@{$roles})) {
4708: if ($role =~ /^cr\//) {
4709: if (!grep(/^cr$/,@{$roles})) {
4710: next;
4711: }
4712: } elsif ($role =~ /^gr\//) {
4713: if (!grep(/^gr$/,@{$roles})) {
4714: next;
4715: }
4716: } else {
4717: next;
4718: }
4719: }
4720: }
4721: if ($hidepriv) {
4722: my @privroles = ('dc','su');
4723: if ($context eq 'userroles') {
4724: next if (grep(/^\Q$role\E$/,@privroles));
4725: } else {
4726: my $possdoms = [$domain];
4727: if (ref($roledoms) eq 'ARRAY') {
4728: push(@{$possdoms},@{$roledoms});
4729: }
4730: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4731: if (!$nothide{$username.':'.$domain}) {
4732: next;
4733: }
4734: }
4735: }
4736: }
4737: if ($withsec) {
4738: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4739: $tstart.':'.$tend;
4740: } else {
4741: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4742: }
4743: }
4744: return %returnhash;
4745: }
4746:
4747: sub get_all_adhocroles {
4748: my ($dom) = @_;
4749: my @roles_by_num = ();
4750: my %domdefaults = &get_domain_defaults($dom);
4751: my (%description,%access_in_dom,%access_info);
4752: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4753: my $count = 0;
4754: my %domcurrent = %{$domdefaults{'adhocroles'}};
4755: my %ordered;
4756: foreach my $role (sort(keys(%domcurrent))) {
4757: my ($order,$desc,$access_in_dom);
4758: if (ref($domcurrent{$role}) eq 'HASH') {
4759: $order = $domcurrent{$role}{'order'};
4760: $desc = $domcurrent{$role}{'desc'};
4761: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4762: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4763: }
4764: if ($order eq '') {
4765: $order = $count;
4766: }
4767: $ordered{$order} = $role;
4768: if ($desc ne '') {
4769: $description{$role} = $desc;
4770: } else {
4771: $description{$role}= $role;
4772: }
4773: $count++;
4774: }
4775: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4776: push(@roles_by_num,$ordered{$item});
4777: }
4778: }
4779: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4780: }
4781:
4782: sub get_my_adhocroles {
4783: my ($cid,$checkreg) = @_;
4784: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4785: if ($env{'request.course.id'} eq $cid) {
4786: $cdom = $env{'course.'.$cid.'.domain'};
4787: $cnum = $env{'course.'.$cid.'.num'};
4788: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4789: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4790: $cdom = $1;
4791: $cnum = $2;
4792: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4793: $cdom,$cnum);
4794: }
4795: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4796: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4797: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4798: if ($rosterhash{$user} ne '') {
4799: my $type = (split(/:/,$rosterhash{$user}))[5];
4800: return ([],{}) if ($type eq 'auto');
4801: }
4802: }
4803: if (($cdom ne '') && ($cnum ne '')) {
4804: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4805: my $then=$env{'user.login.time'};
4806: my $update=$env{'user.update.time'};
4807: if (!$update) {
4808: $update = $then;
4809: }
4810: my @liveroles;
4811: foreach my $role ('dh','da') {
4812: if ($env{"user.role.$role./$cdom/"}) {
4813: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4814: my $limit = $update;
4815: if ($env{'request.role'} eq "$role./$cdom/") {
4816: $limit = $then;
4817: }
4818: my $activerole = 1;
4819: if ($tstart && $tstart>$limit) { $activerole = 0; }
4820: if ($tend && $tend <$limit) { $activerole = 0; }
4821: if ($activerole) {
4822: push(@liveroles,$role);
4823: }
4824: }
4825: }
4826: if (@liveroles) {
4827: if (&homeserver($cnum,$cdom) ne 'no_host') {
4828: my ($accessref,$accessinfo,%access_in_dom);
4829: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4830: if (ref($roles_by_num) eq 'ARRAY') {
4831: if (@{$roles_by_num}) {
4832: my %settings;
4833: if ($env{'request.course.id'} eq $cid) {
4834: foreach my $envkey (keys(%env)) {
4835: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4836: $settings{$1} = $env{$envkey};
4837: }
4838: }
4839: } else {
4840: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4841: }
4842: my %setincrs;
4843: if ($settings{'internal.adhocaccess'}) {
4844: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4845: }
4846: my @statuses;
4847: if ($env{'environment.inststatus'}) {
4848: @statuses = split(/,/,$env{'environment.inststatus'});
4849: }
4850: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4851: if (ref($accessref) eq 'HASH') {
4852: %access_in_dom = %{$accessref};
4853: }
4854: foreach my $role (@{$roles_by_num}) {
4855: my ($curraccess,@okstatus,@personnel);
4856: if ($setincrs{$role}) {
4857: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4858: if ($curraccess eq 'status') {
4859: @okstatus = split(/\&/,$rest);
4860: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4861: @personnel = split(/\&/,$rest);
4862: }
4863: } else {
4864: $curraccess = $access_in_dom{$role};
4865: if (ref($accessinfo) eq 'HASH') {
4866: if ($curraccess eq 'status') {
4867: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4868: @okstatus = @{$accessinfo->{$role}};
4869: }
4870: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4871: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4872: @personnel = @{$accessinfo->{$role}};
4873: }
4874: }
4875: }
4876: }
4877: if ($curraccess eq 'none') {
4878: next;
4879: } elsif ($curraccess eq 'all') {
4880: push(@possroles,$role);
4881: } elsif ($curraccess eq 'dh') {
4882: if (grep(/^dh$/,@liveroles)) {
4883: push(@possroles,$role);
4884: } else {
4885: next;
4886: }
4887: } elsif ($curraccess eq 'da') {
4888: if (grep(/^da$/,@liveroles)) {
4889: push(@possroles,$role);
4890: } else {
4891: next;
4892: }
4893: } elsif ($curraccess eq 'status') {
4894: if (@okstatus) {
4895: if (!@statuses) {
4896: if (grep(/^default$/,@okstatus)) {
4897: push(@possroles,$role);
4898: }
4899: } else {
4900: foreach my $status (@okstatus) {
4901: if (grep(/^\Q$status\E$/,@statuses)) {
4902: push(@possroles,$role);
4903: last;
4904: }
4905: }
4906: }
4907: }
4908: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4909: if (grep(/^\Q$user\E$/,@personnel)) {
4910: if ($curraccess eq 'exc') {
4911: push(@possroles,$role);
4912: }
4913: } elsif ($curraccess eq 'inc') {
4914: push(@possroles,$role);
4915: }
4916: }
4917: }
4918: }
4919: }
4920: }
4921: }
4922: }
4923: }
4924: unless (ref($description) eq 'HASH') {
4925: if (ref($roles_by_num) eq 'ARRAY') {
4926: my %desc;
4927: map { $desc{$_} = $_; } (@{$roles_by_num});
4928: $description = \%desc;
4929: } else {
4930: $description = {};
4931: }
4932: }
4933: return (\@possroles,$description);
4934: }
4935:
4936: # ----------------------------------------------------- Frontpage Announcements
4937: #
4938: #
4939:
4940: sub postannounce {
4941: my ($server,$text)=@_;
4942: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4943: unless ($text=~/\w/) { $text=''; }
4944: return &reply('setannounce:'.&escape($text),$server);
4945: }
4946:
4947: sub getannounce {
4948:
4949: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4950: my $announcement='';
4951: while (my $line = <$fh>) { $announcement .= $line; }
4952: close($fh);
4953: if ($announcement=~/\w/) {
4954: return
4955: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4956: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4957: } else {
4958: return '';
4959: }
4960: } else {
4961: return '';
4962: }
4963: }
4964:
4965: # ---------------------------------------------------------- Course ID routines
4966: # Deal with domain's nohist_courseid.db files
4967: #
4968:
4969: sub courseidput {
4970: my ($domain,$storehash,$coursehome,$caller) = @_;
4971: return unless (ref($storehash) eq 'HASH');
4972: my $outcome;
4973: if ($caller eq 'timeonly') {
4974: my $cids = '';
4975: foreach my $item (keys(%$storehash)) {
4976: $cids.=&escape($item).'&';
4977: }
4978: $cids=~s/\&$//;
4979: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4980: $coursehome);
4981: } else {
4982: my $items = '';
4983: foreach my $item (keys(%$storehash)) {
4984: $items.= &escape($item).'='.
4985: &freeze_escape($$storehash{$item}).'&';
4986: }
4987: $items=~s/\&$//;
4988: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4989: $coursehome);
4990: }
4991: if ($outcome eq 'unknown_cmd') {
4992: my $what;
4993: foreach my $cid (keys(%$storehash)) {
4994: $what .= &escape($cid).'=';
4995: foreach my $item ('description','inst_code','owner','type') {
4996: $what .= &escape($storehash->{$cid}{$item}).':';
4997: }
4998: $what =~ s/\:$/&/;
4999: }
5000: $what =~ s/\&$//;
5001: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5002: } else {
5003: return $outcome;
5004: }
5005: }
5006:
5007: sub courseiddump {
5008: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5009: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5010: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5011: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5012: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5013: my $as_hash = 1;
5014: my %returnhash;
5015: if (!$domfilter) { $domfilter=''; }
5016: my %libserv = &all_library();
5017: foreach my $tryserver (keys(%libserv)) {
5018: if ( ( $hostidflag == 1
5019: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5020: || (!defined($hostidflag)) ) {
5021:
5022: if (($domfilter eq '') ||
5023: (&host_domain($tryserver) eq $domfilter)) {
5024: my $rep;
5025: if (grep { $_ eq $tryserver } current_machine_ids()) {
5026: $rep = LONCAPA::Lond::dump_course_id_handler(
5027: join(":", (&host_domain($tryserver), $sincefilter,
5028: &escape($descfilter), &escape($instcodefilter),
5029: &escape($ownerfilter), &escape($coursefilter),
5030: &escape($typefilter), &escape($regexp_ok),
5031: $as_hash, &escape($selfenrollonly),
5032: &escape($catfilter), $showhidden, $caller,
5033: &escape($cloner), &escape($cc_clone), $cloneonly,
5034: &escape($createdbefore), &escape($createdafter),
5035: &escape($creationcontext),$domcloner,$hasuniquecode,
5036: $reqcrsdom,&escape($reqinstcode))));
5037: } else {
5038: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5039: $sincefilter.':'.&escape($descfilter).':'.
5040: &escape($instcodefilter).':'.&escape($ownerfilter).
5041: ':'.&escape($coursefilter).':'.&escape($typefilter).
5042: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5043: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5044: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5045: &escape($cc_clone).':'.$cloneonly.':'.
5046: &escape($createdbefore).':'.&escape($createdafter).':'.
5047: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5048: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5049: }
5050:
5051: my @pairs=split(/\&/,$rep);
5052: foreach my $item (@pairs) {
5053: my ($key,$value)=split(/\=/,$item,2);
5054: $key = &unescape($key);
5055: next if ($key =~ /^error: 2 /);
5056: my $result = &thaw_unescape($value);
5057: if (ref($result) eq 'HASH') {
5058: $returnhash{$key}=$result;
5059: } else {
5060: my @responses = split(/:/,$value);
5061: my @items = ('description','inst_code','owner','type');
5062: for (my $i=0; $i<@responses; $i++) {
5063: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5064: }
5065: }
5066: }
5067: }
5068: }
5069: }
5070: return %returnhash;
5071: }
5072:
5073: sub courselastaccess {
5074: my ($cdom,$cnum,$hostidref) = @_;
5075: my %returnhash;
5076: if ($cdom && $cnum) {
5077: my $chome = &homeserver($cnum,$cdom);
5078: if ($chome ne 'no_host') {
5079: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5080: &extract_lastaccess(\%returnhash,$rep);
5081: }
5082: } else {
5083: if (!$cdom) { $cdom=''; }
5084: my %libserv = &all_library();
5085: foreach my $tryserver (keys(%libserv)) {
5086: if (ref($hostidref) eq 'ARRAY') {
5087: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5088: }
5089: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5090: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5091: &extract_lastaccess(\%returnhash,$rep);
5092: }
5093: }
5094: }
5095: return %returnhash;
5096: }
5097:
5098: sub extract_lastaccess {
5099: my ($returnhash,$rep) = @_;
5100: if (ref($returnhash) eq 'HASH') {
5101: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5102: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5103: $rep eq '') {
5104: my @pairs=split(/\&/,$rep);
5105: foreach my $item (@pairs) {
5106: my ($key,$value)=split(/\=/,$item,2);
5107: $key = &unescape($key);
5108: next if ($key =~ /^error: 2 /);
5109: $returnhash->{$key} = &thaw_unescape($value);
5110: }
5111: }
5112: }
5113: return;
5114: }
5115:
5116: # ---------------------------------------------------------- DC e-mail
5117:
5118: sub dcmailput {
5119: my ($domain,$msgid,$message,$server)=@_;
5120: my $status = &Apache::lonnet::critical(
5121: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5122: &escape($message),$server);
5123: return $status;
5124: }
5125:
5126: sub dcmaildump {
5127: my ($dom,$startdate,$enddate,$senders) = @_;
5128: my %returnhash=();
5129:
5130: if (defined(&domain($dom,'primary'))) {
5131: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5132: &escape($enddate).':';
5133: my @esc_senders=map { &escape($_)} @$senders;
5134: $cmd.=&escape(join('&',@esc_senders));
5135: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5136: my ($key,$value) = split(/\=/,$line,2);
5137: if (($key) && ($value)) {
5138: $returnhash{&unescape($key)} = &unescape($value);
5139: }
5140: }
5141: }
5142: return %returnhash;
5143: }
5144: # ---------------------------------------------------------- Domain roles
5145:
5146: sub get_domain_roles {
5147: my ($dom,$roles,$startdate,$enddate)=@_;
5148: if ((!defined($startdate)) || ($startdate eq '')) {
5149: $startdate = '.';
5150: }
5151: if ((!defined($enddate)) || ($enddate eq '')) {
5152: $enddate = '.';
5153: }
5154: my $rolelist;
5155: if (ref($roles) eq 'ARRAY') {
5156: $rolelist = join('&',@{$roles});
5157: }
5158: my %personnel = ();
5159:
5160: my %servers = &get_servers($dom,'library');
5161: foreach my $tryserver (keys(%servers)) {
5162: %{$personnel{$tryserver}}=();
5163: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5164: &escape($startdate).':'.
5165: &escape($enddate).':'.
5166: &escape($rolelist), $tryserver))) {
5167: my ($key,$value) = split(/\=/,$line,2);
5168: if (($key) && ($value)) {
5169: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5170: }
5171: }
5172: }
5173: return %personnel;
5174: }
5175:
5176: sub get_active_domroles {
5177: my ($dom,$roles) = @_;
5178: return () unless (ref($roles) eq 'ARRAY');
5179: my $now = time;
5180: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5181: my %domroles;
5182: foreach my $server (keys(%dompersonnel)) {
5183: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5184: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5185: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5186: }
5187: }
5188: return %domroles;
5189: }
5190:
5191: # ----------------------------------------------------------- Interval timing
5192:
5193: {
5194: # Caches needed for speedup of navmaps
5195: # We don't want to cache this for very long at all (5 seconds at most)
5196: #
5197: # The user for whom we cache
5198: my $cachedkey='';
5199: # The cached times for this user
5200: my %cachedtimes=();
5201: # When this was last done
5202: my $cachedtime='';
5203:
5204: sub load_all_first_access {
5205: my ($uname,$udom,$ignorecache)=@_;
5206: if (($cachedkey eq $uname.':'.$udom) &&
5207: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5208: (!$ignorecache)) {
5209: return;
5210: }
5211: $cachedtime=time;
5212: $cachedkey=$uname.':'.$udom;
5213: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5214: }
5215:
5216: sub get_first_access {
5217: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5218: my ($symb,$courseid,$udom,$uname)=&whichuser();
5219: if ($argsymb) { $symb=$argsymb; }
5220: my ($map,$id,$res)=&decode_symb($symb);
5221: if ($argmap) { $map = $argmap; }
5222: if ($type eq 'course') {
5223: $res='course';
5224: } elsif ($type eq 'map') {
5225: $res=&symbread($map);
5226: } else {
5227: $res=$symb;
5228: }
5229: &load_all_first_access($uname,$udom,$ignorecache);
5230: return $cachedtimes{"$courseid\0$res"};
5231: }
5232:
5233: sub set_first_access {
5234: my ($type,$interval)=@_;
5235: my ($symb,$courseid,$udom,$uname)=&whichuser();
5236: my ($map,$id,$res)=&decode_symb($symb);
5237: if ($type eq 'course') {
5238: $res='course';
5239: } elsif ($type eq 'map') {
5240: $res=&symbread($map);
5241: } else {
5242: $res=$symb;
5243: }
5244: $cachedkey='';
5245: my $firstaccess=&get_first_access($type,$symb,$map);
5246: if ($firstaccess) {
5247: &logthis("First access time already set ($firstaccess) when attempting ".
5248: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5249: "in $courseid");
5250: return 'already_set';
5251: } else {
5252: my $start = time;
5253: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5254: $udom,$uname);
5255: if ($putres eq 'ok') {
5256: &put('timerinterval',{"$courseid\0$res"=>$interval},
5257: $udom,$uname);
5258: &appenv(
5259: {
5260: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5261: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5262: }
5263: );
5264: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5265: $cachedtimes{"$courseid\0$res"} = $start;
5266: }
5267: } elsif ($putres ne 'refused') {
5268: &logthis("Result: $putres when attempting to set first access time ".
5269: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5270: }
5271: return $putres;
5272: }
5273: return 'already_set';
5274: }
5275: }
5276:
5277: # --------------------------------------------- Set Expire Date for Spreadsheet
5278:
5279: sub expirespread {
5280: my ($uname,$udom,$stype,$usymb)=@_;
5281: my $cid=$env{'request.course.id'};
5282: if ($cid) {
5283: my $now=time;
5284: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5285: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5286: $env{'course.'.$cid.'.num'}.
5287: ':nohist_expirationdates:'.
5288: &escape($key).'='.$now,
5289: $env{'course.'.$cid.'.home'})
5290: }
5291: return 'ok';
5292: }
5293:
5294: # ----------------------------------------------------- Devalidate Spreadsheets
5295:
5296: sub devalidate {
5297: my ($symb,$uname,$udom)=@_;
5298: my $cid=$env{'request.course.id'};
5299: if ($cid) {
5300: # delete the stored spreadsheets for
5301: # - the student level sheet of this user in course's homespace
5302: # - the assessment level sheet for this resource
5303: # for this user in user's homespace
5304: # - current conditional state info
5305: my $key=$uname.':'.$udom.':';
5306: my $status=
5307: &del('nohist_calculatedsheets',
5308: [$key.'studentcalc:'],
5309: $env{'course.'.$cid.'.domain'},
5310: $env{'course.'.$cid.'.num'})
5311: .' '.
5312: &del('nohist_calculatedsheets_'.$cid,
5313: [$key.'assesscalc:'.$symb],$udom,$uname);
5314: unless ($status eq 'ok ok') {
5315: &logthis('Could not devalidate spreadsheet '.
5316: $uname.' at '.$udom.' for '.
5317: $symb.': '.$status);
5318: }
5319: &delenv('user.state.'.$cid);
5320: }
5321: }
5322:
5323: sub get_scalar {
5324: my ($string,$end) = @_;
5325: my $value;
5326: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5327: $value = $1;
5328: } elsif ($$string =~ s/^([^&]*?)&//) {
5329: $value = $1;
5330: }
5331: return &unescape($value);
5332: }
5333:
5334: sub array2str {
5335: my (@array) = @_;
5336: my $result=&arrayref2str(\@array);
5337: $result=~s/^__ARRAY_REF__//;
5338: $result=~s/__END_ARRAY_REF__$//;
5339: return $result;
5340: }
5341:
5342: sub arrayref2str {
5343: my ($arrayref) = @_;
5344: my $result='__ARRAY_REF__';
5345: foreach my $elem (@$arrayref) {
5346: if(ref($elem) eq 'ARRAY') {
5347: $result.=&arrayref2str($elem).'&';
5348: } elsif(ref($elem) eq 'HASH') {
5349: $result.=&hashref2str($elem).'&';
5350: } elsif(ref($elem)) {
5351: #print("Got a ref of ".(ref($elem))." skipping.");
5352: } else {
5353: $result.=&escape($elem).'&';
5354: }
5355: }
5356: $result=~s/\&$//;
5357: $result .= '__END_ARRAY_REF__';
5358: return $result;
5359: }
5360:
5361: sub hash2str {
5362: my (%hash) = @_;
5363: my $result=&hashref2str(\%hash);
5364: $result=~s/^__HASH_REF__//;
5365: $result=~s/__END_HASH_REF__$//;
5366: return $result;
5367: }
5368:
5369: sub hashref2str {
5370: my ($hashref)=@_;
5371: my $result='__HASH_REF__';
5372: foreach my $key (sort(keys(%$hashref))) {
5373: if (ref($key) eq 'ARRAY') {
5374: $result.=&arrayref2str($key).'=';
5375: } elsif (ref($key) eq 'HASH') {
5376: $result.=&hashref2str($key).'=';
5377: } elsif (ref($key)) {
5378: $result.='=';
5379: #print("Got a ref of ".(ref($key))." skipping.");
5380: } else {
5381: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5382: }
5383:
5384: if(ref($hashref->{$key}) eq 'ARRAY') {
5385: $result.=&arrayref2str($hashref->{$key}).'&';
5386: } elsif(ref($hashref->{$key}) eq 'HASH') {
5387: $result.=&hashref2str($hashref->{$key}).'&';
5388: } elsif(ref($hashref->{$key})) {
5389: $result.='&';
5390: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5391: } else {
5392: $result.=&escape($hashref->{$key}).'&';
5393: }
5394: }
5395: $result=~s/\&$//;
5396: $result .= '__END_HASH_REF__';
5397: return $result;
5398: }
5399:
5400: sub str2hash {
5401: my ($string)=@_;
5402: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5403: return %$hash;
5404: }
5405:
5406: sub str2hashref {
5407: my ($string) = @_;
5408:
5409: my %hash;
5410:
5411: if($string !~ /^__HASH_REF__/) {
5412: if (! ($string eq '' || !defined($string))) {
5413: $hash{'error'}='Not hash reference';
5414: }
5415: return (\%hash, $string);
5416: }
5417:
5418: $string =~ s/^__HASH_REF__//;
5419:
5420: while($string !~ /^__END_HASH_REF__/) {
5421: #key
5422: my $key='';
5423: if($string =~ /^__HASH_REF__/) {
5424: ($key, $string)=&str2hashref($string);
5425: if(defined($key->{'error'})) {
5426: $hash{'error'}='Bad data';
5427: return (\%hash, $string);
5428: }
5429: } elsif($string =~ /^__ARRAY_REF__/) {
5430: ($key, $string)=&str2arrayref($string);
5431: if($key->[0] eq 'Array reference error') {
5432: $hash{'error'}='Bad data';
5433: return (\%hash, $string);
5434: }
5435: } else {
5436: $string =~ s/^(.*?)=//;
5437: $key=&unescape($1);
5438: }
5439: $string =~ s/^=//;
5440:
5441: #value
5442: my $value='';
5443: if($string =~ /^__HASH_REF__/) {
5444: ($value, $string)=&str2hashref($string);
5445: if(defined($value->{'error'})) {
5446: $hash{'error'}='Bad data';
5447: return (\%hash, $string);
5448: }
5449: } elsif($string =~ /^__ARRAY_REF__/) {
5450: ($value, $string)=&str2arrayref($string);
5451: if($value->[0] eq 'Array reference error') {
5452: $hash{'error'}='Bad data';
5453: return (\%hash, $string);
5454: }
5455: } else {
5456: $value=&get_scalar(\$string,'__END_HASH_REF__');
5457: }
5458: $string =~ s/^&//;
5459:
5460: $hash{$key}=$value;
5461: }
5462:
5463: $string =~ s/^__END_HASH_REF__//;
5464:
5465: return (\%hash, $string);
5466: }
5467:
5468: sub str2array {
5469: my ($string)=@_;
5470: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5471: return @$array;
5472: }
5473:
5474: sub str2arrayref {
5475: my ($string) = @_;
5476: my @array;
5477:
5478: if($string !~ /^__ARRAY_REF__/) {
5479: if (! ($string eq '' || !defined($string))) {
5480: $array[0]='Array reference error';
5481: }
5482: return (\@array, $string);
5483: }
5484:
5485: $string =~ s/^__ARRAY_REF__//;
5486:
5487: while($string !~ /^__END_ARRAY_REF__/) {
5488: my $value='';
5489: if($string =~ /^__HASH_REF__/) {
5490: ($value, $string)=&str2hashref($string);
5491: if(defined($value->{'error'})) {
5492: $array[0] ='Array reference error';
5493: return (\@array, $string);
5494: }
5495: } elsif($string =~ /^__ARRAY_REF__/) {
5496: ($value, $string)=&str2arrayref($string);
5497: if($value->[0] eq 'Array reference error') {
5498: $array[0] ='Array reference error';
5499: return (\@array, $string);
5500: }
5501: } else {
5502: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5503: }
5504: $string =~ s/^&//;
5505:
5506: push(@array, $value);
5507: }
5508:
5509: $string =~ s/^__END_ARRAY_REF__//;
5510:
5511: return (\@array, $string);
5512: }
5513:
5514: # -------------------------------------------------------------------Temp Store
5515:
5516: sub tmpreset {
5517: my ($symb,$namespace,$domain,$stuname) = @_;
5518: if (!$symb) {
5519: $symb=&symbread();
5520: if (!$symb) { $symb= $env{'request.url'}; }
5521: }
5522: $symb=escape($symb);
5523:
5524: if (!$namespace) { $namespace=$env{'request.state'}; }
5525: $namespace=~s/\//\_/g;
5526: $namespace=~s/\W//g;
5527:
5528: if (!$domain) { $domain=$env{'user.domain'}; }
5529: if (!$stuname) { $stuname=$env{'user.name'}; }
5530: if ($domain eq 'public' && $stuname eq 'public') {
5531: $stuname=$ENV{'REMOTE_ADDR'};
5532: }
5533: my $path=LONCAPA::tempdir();
5534: my %hash;
5535: if (tie(%hash,'GDBM_File',
5536: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5537: &GDBM_WRCREAT(),0640)) {
5538: foreach my $key (keys(%hash)) {
5539: if ($key=~ /:$symb/) {
5540: delete($hash{$key});
5541: }
5542: }
5543: }
5544: }
5545:
5546: sub tmpstore {
5547: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5548:
5549: if (!$symb) {
5550: $symb=&symbread();
5551: if (!$symb) { $symb= $env{'request.url'}; }
5552: }
5553: $symb=escape($symb);
5554:
5555: if (!$namespace) {
5556: # I don't think we would ever want to store this for a course.
5557: # it seems this will only be used if we don't have a course.
5558: #$namespace=$env{'request.course.id'};
5559: #if (!$namespace) {
5560: $namespace=$env{'request.state'};
5561: #}
5562: }
5563: $namespace=~s/\//\_/g;
5564: $namespace=~s/\W//g;
5565: if (!$domain) { $domain=$env{'user.domain'}; }
5566: if (!$stuname) { $stuname=$env{'user.name'}; }
5567: if ($domain eq 'public' && $stuname eq 'public') {
5568: $stuname=$ENV{'REMOTE_ADDR'};
5569: }
5570: my $now=time;
5571: my %hash;
5572: my $path=LONCAPA::tempdir();
5573: if (tie(%hash,'GDBM_File',
5574: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5575: &GDBM_WRCREAT(),0640)) {
5576: $hash{"version:$symb"}++;
5577: my $version=$hash{"version:$symb"};
5578: my $allkeys='';
5579: foreach my $key (keys(%$storehash)) {
5580: $allkeys.=$key.':';
5581: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5582: }
5583: $hash{"$version:$symb:timestamp"}=$now;
5584: $allkeys.='timestamp';
5585: $hash{"$version:keys:$symb"}=$allkeys;
5586: if (untie(%hash)) {
5587: return 'ok';
5588: } else {
5589: return "error:$!";
5590: }
5591: } else {
5592: return "error:$!";
5593: }
5594: }
5595:
5596: # -----------------------------------------------------------------Temp Restore
5597:
5598: sub tmprestore {
5599: my ($symb,$namespace,$domain,$stuname) = @_;
5600:
5601: if (!$symb) {
5602: $symb=&symbread();
5603: if (!$symb) { $symb= $env{'request.url'}; }
5604: }
5605: $symb=escape($symb);
5606:
5607: if (!$namespace) { $namespace=$env{'request.state'}; }
5608:
5609: if (!$domain) { $domain=$env{'user.domain'}; }
5610: if (!$stuname) { $stuname=$env{'user.name'}; }
5611: if ($domain eq 'public' && $stuname eq 'public') {
5612: $stuname=$ENV{'REMOTE_ADDR'};
5613: }
5614: my %returnhash;
5615: $namespace=~s/\//\_/g;
5616: $namespace=~s/\W//g;
5617: my %hash;
5618: my $path=LONCAPA::tempdir();
5619: if (tie(%hash,'GDBM_File',
5620: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5621: &GDBM_READER(),0640)) {
5622: my $version=$hash{"version:$symb"};
5623: $returnhash{'version'}=$version;
5624: my $scope;
5625: for ($scope=1;$scope<=$version;$scope++) {
5626: my $vkeys=$hash{"$scope:keys:$symb"};
5627: my @keys=split(/:/,$vkeys);
5628: my $key;
5629: $returnhash{"$scope:keys"}=$vkeys;
5630: foreach $key (@keys) {
5631: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5632: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5633: }
5634: }
5635: if (!(untie(%hash))) {
5636: return "error:$!";
5637: }
5638: } else {
5639: return "error:$!";
5640: }
5641: return %returnhash;
5642: }
5643:
5644: # ----------------------------------------------------------------------- Store
5645:
5646: sub store {
5647: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5648: my $home='';
5649:
5650: if ($stuname) { $home=&homeserver($stuname,$domain); }
5651:
5652: $symb=&symbclean($symb);
5653: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5654:
5655: if (!$domain) { $domain=$env{'user.domain'}; }
5656: if (!$stuname) { $stuname=$env{'user.name'}; }
5657:
5658: &devalidate($symb,$stuname,$domain);
5659:
5660: $symb=escape($symb);
5661: if (!$namespace) {
5662: unless ($namespace=$env{'request.course.id'}) {
5663: return '';
5664: }
5665: }
5666: if (!$home) { $home=$env{'user.home'}; }
5667:
5668: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5669: $$storehash{'host'}=$perlvar{'lonHostID'};
5670:
5671: my $namevalue='';
5672: foreach my $key (keys(%$storehash)) {
5673: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5674: }
5675: $namevalue=~s/\&$//;
5676: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5677: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5678: }
5679:
5680: # -------------------------------------------------------------- Critical Store
5681:
5682: sub cstore {
5683: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5684: my $home='';
5685:
5686: if ($stuname) { $home=&homeserver($stuname,$domain); }
5687:
5688: $symb=&symbclean($symb);
5689: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5690:
5691: if (!$domain) { $domain=$env{'user.domain'}; }
5692: if (!$stuname) { $stuname=$env{'user.name'}; }
5693:
5694: &devalidate($symb,$stuname,$domain);
5695:
5696: $symb=escape($symb);
5697: if (!$namespace) {
5698: unless ($namespace=$env{'request.course.id'}) {
5699: return '';
5700: }
5701: }
5702: if (!$home) { $home=$env{'user.home'}; }
5703:
5704: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5705: $$storehash{'host'}=$perlvar{'lonHostID'};
5706:
5707: my $namevalue='';
5708: foreach my $key (keys(%$storehash)) {
5709: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5710: }
5711: $namevalue=~s/\&$//;
5712: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5713: return critical
5714: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5715: }
5716:
5717: # --------------------------------------------------------------------- Restore
5718:
5719: sub restore {
5720: my ($symb,$namespace,$domain,$stuname) = @_;
5721: my $home='';
5722:
5723: if ($stuname) { $home=&homeserver($stuname,$domain); }
5724:
5725: if (!$symb) {
5726: return if ($namespace eq 'courserequests');
5727: unless ($symb=escape(&symbread())) { return ''; }
5728: } else {
5729: unless ($namespace eq 'courserequests') {
5730: $symb=&escape(&symbclean($symb));
5731: }
5732: }
5733: if (!$namespace) {
5734: unless ($namespace=$env{'request.course.id'}) {
5735: return '';
5736: }
5737: }
5738: if (!$domain) { $domain=$env{'user.domain'}; }
5739: if (!$stuname) { $stuname=$env{'user.name'}; }
5740: if (!$home) { $home=$env{'user.home'}; }
5741: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5742:
5743: my %returnhash=();
5744: foreach my $line (split(/\&/,$answer)) {
5745: my ($name,$value)=split(/\=/,$line);
5746: $returnhash{&unescape($name)}=&thaw_unescape($value);
5747: }
5748: my $version;
5749: for ($version=1;$version<=$returnhash{'version'};$version++) {
5750: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5751: $returnhash{$item}=$returnhash{$version.':'.$item};
5752: }
5753: }
5754: return %returnhash;
5755: }
5756:
5757: # ---------------------------------------------------------- Course Description
5758: #
5759: #
5760:
5761: sub coursedescription {
5762: my ($courseid,$args)=@_;
5763: $courseid=~s/^\///;
5764: $courseid=~s/\_/\//g;
5765: my ($cdomain,$cnum)=split(/\//,$courseid);
5766: my $chome=&homeserver($cnum,$cdomain);
5767: my $normalid=$cdomain.'_'.$cnum;
5768: # need to always cache even if we get errors otherwise we keep
5769: # trying and trying and trying to get the course description.
5770: my %envhash=();
5771: my %returnhash=();
5772:
5773: my $expiretime=600;
5774: if ($env{'request.course.id'} eq $normalid) {
5775: $expiretime=120;
5776: }
5777:
5778: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5779: if (!$args->{'freshen_cache'}
5780: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5781: foreach my $key (keys(%env)) {
5782: next if ($key !~ /^\Q$prefix\E(.*)/);
5783: my ($setting) = $1;
5784: $returnhash{$setting} = $env{$key};
5785: }
5786: return %returnhash;
5787: }
5788:
5789: # get the data again
5790:
5791: if (!$args->{'one_time'}) {
5792: $envhash{'course.'.$normalid.'.last_cache'}=time;
5793: }
5794:
5795: if ($chome ne 'no_host') {
5796: %returnhash=&dump('environment',$cdomain,$cnum);
5797: if (!exists($returnhash{'con_lost'})) {
5798: my $username = $env{'user.name'}; # Defult username
5799: if(defined $args->{'user'}) {
5800: $username = $args->{'user'};
5801: }
5802: $returnhash{'home'}= $chome;
5803: $returnhash{'domain'} = $cdomain;
5804: $returnhash{'num'} = $cnum;
5805: if (!defined($returnhash{'type'})) {
5806: $returnhash{'type'} = 'Course';
5807: }
5808: while (my ($name,$value) = each %returnhash) {
5809: $envhash{'course.'.$normalid.'.'.$name}=$value;
5810: }
5811: $returnhash{'url'}=&clutter($returnhash{'url'});
5812: $returnhash{'fn'}=LONCAPA::tempdir() .
5813: $username.'_'.$cdomain.'_'.$cnum;
5814: $envhash{'course.'.$normalid.'.home'}=$chome;
5815: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5816: $envhash{'course.'.$normalid.'.num'}=$cnum;
5817: }
5818: }
5819: if (!$args->{'one_time'}) {
5820: &appenv(\%envhash);
5821: }
5822: return %returnhash;
5823: }
5824:
5825: sub update_released_required {
5826: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5827: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5828: $cid = $env{'request.course.id'};
5829: $cdom = $env{'course.'.$cid.'.domain'};
5830: $cnum = $env{'course.'.$cid.'.num'};
5831: $chome = $env{'course.'.$cid.'.home'};
5832: }
5833: if ($needsrelease) {
5834: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5835: my $needsupdate;
5836: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5837: $needsupdate = 1;
5838: } else {
5839: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5840: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5841: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5842: $needsupdate = 1;
5843: }
5844: }
5845: if ($needsupdate) {
5846: my %needshash = (
5847: 'internal.releaserequired' => $needsrelease,
5848: );
5849: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5850: if ($putresult eq 'ok') {
5851: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5852: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5853: if (ref($crsinfo{$cid}) eq 'HASH') {
5854: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5855: &courseidput($cdom,\%crsinfo,$chome,'notime');
5856: }
5857: }
5858: }
5859: }
5860: return;
5861: }
5862:
5863: # -------------------------------------------------See if a user is privileged
5864:
5865: sub privileged {
5866: my ($username,$domain,$possdomains,$possroles)=@_;
5867: my $now = time;
5868: my $roles;
5869: if (ref($possroles) eq 'ARRAY') {
5870: $roles = $possroles;
5871: } else {
5872: $roles = ['dc','su'];
5873: }
5874: if (ref($possdomains) eq 'ARRAY') {
5875: my %privileged = &privileged_by_domain($possdomains,$roles);
5876: foreach my $dom (@{$possdomains}) {
5877: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5878: (ref($privileged{$dom}) eq 'HASH')) {
5879: foreach my $role (@{$roles}) {
5880: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5881: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5882: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5883: return 1 unless (($end && $end < $now) ||
5884: ($start && $start > $now));
5885: }
5886: }
5887: }
5888: }
5889: }
5890: } else {
5891: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5892: my $now = time;
5893:
5894: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5895: my ($trole, $tend, $tstart) = split(/_/, $role);
5896: if (grep(/^\Q$trole\E$/,@{$roles})) {
5897: return 1 unless ($tend && $tend < $now)
5898: or ($tstart && $tstart > $now);
5899: }
5900: }
5901: }
5902: return 0;
5903: }
5904:
5905: sub privileged_by_domain {
5906: my ($domains,$roles) = @_;
5907: my %privileged = ();
5908: my $cachetime = 60*60*24;
5909: my $now = time;
5910: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5911: return %privileged;
5912: }
5913: foreach my $dom (@{$domains}) {
5914: next if (ref($privileged{$dom}) eq 'HASH');
5915: my $needroles;
5916: foreach my $role (@{$roles}) {
5917: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5918: if (defined($cached)) {
5919: if (ref($result) eq 'HASH') {
5920: $privileged{$dom}{$role} = $result;
5921: }
5922: } else {
5923: $needroles = 1;
5924: }
5925: }
5926: if ($needroles) {
5927: my %dompersonnel = &get_domain_roles($dom,$roles);
5928: $privileged{$dom} = {};
5929: foreach my $server (keys(%dompersonnel)) {
5930: if (ref($dompersonnel{$server}) eq 'HASH') {
5931: foreach my $item (keys(%{$dompersonnel{$server}})) {
5932: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5933: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5934: next if ($end && $end < $now);
5935: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5936: $dompersonnel{$server}{$item};
5937: }
5938: }
5939: }
5940: if (ref($privileged{$dom}) eq 'HASH') {
5941: foreach my $role (@{$roles}) {
5942: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5943: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5944: } else {
5945: my %hash = ();
5946: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5947: }
5948: }
5949: }
5950: }
5951: }
5952: return %privileged;
5953: }
5954:
5955: # -------------------------------------------------------- Get user privileges
5956:
5957: sub rolesinit {
5958: my ($domain, $username) = @_;
5959: my %userroles = ('user.login.time' => time);
5960: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5961:
5962: # firstaccess and timerinterval are related to timed maps/resources.
5963: # also, blocking can be triggered by an activating timer
5964: # it's saved in the user's %env.
5965: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5966: my %timerinterval = &dump('timerinterval', $domain, $username);
5967: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5968: %timerintchk, %timerintenv);
5969:
5970: foreach my $key (keys(%firstaccess)) {
5971: my ($cid, $rest) = split(/\0/, $key);
5972: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5973: }
5974:
5975: foreach my $key (keys(%timerinterval)) {
5976: my ($cid,$rest) = split(/\0/,$key);
5977: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5978: }
5979:
5980: my %allroles=();
5981: my %allgroups=();
5982:
5983: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5984: my $role = $rolesdump{$area};
5985: $area =~ s/\_\w\w$//;
5986:
5987: my ($trole, $tend, $tstart, $group_privs);
5988:
5989: if ($role =~ /^cr/) {
5990: # Custom role, defined by a user
5991: # e.g., user.role.cr/msu/smith/mynewrole
5992: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5993: $trole = $1;
5994: ($tend, $tstart) = split('_', $2);
5995: } else {
5996: $trole = $role;
5997: }
5998: } elsif ($role =~ m|^gr/|) {
5999: # Role of member in a group, defined within a course/community
6000: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6001: ($trole, $tend, $tstart) = split(/_/, $role);
6002: next if $tstart eq '-1';
6003: ($trole, $group_privs) = split(/\//, $trole);
6004: $group_privs = &unescape($group_privs);
6005: } else {
6006: # Just a normal role, defined in roles.tab
6007: ($trole, $tend, $tstart) = split(/_/,$role);
6008: }
6009:
6010: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6011: $username);
6012: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6013:
6014: # role expired or not available yet?
6015: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6016: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6017:
6018: next if $area eq '' or $trole eq '';
6019:
6020: my $spec = "$trole.$area";
6021: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6022:
6023: if ($trole =~ /^cr\//) {
6024: # Custom role, defined by a user
6025: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6026: } elsif ($trole eq 'gr') {
6027: # Role of a member in a group, defined within a course/community
6028: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6029: next;
6030: } else {
6031: # Normal role, defined in roles.tab
6032: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6033: }
6034:
6035: my $cid = $tdomain.'_'.$trest;
6036: unless ($firstaccchk{$cid}) {
6037: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6038: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6039: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6040: $coursetimerstarts{$cid}{$item};
6041: }
6042: }
6043: $firstaccchk{$cid} = 1;
6044: }
6045: unless ($timerintchk{$cid}) {
6046: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6047: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6048: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6049: $coursetimerintervals{$cid}{$item};
6050: }
6051: }
6052: $timerintchk{$cid} = 1;
6053: }
6054: }
6055:
6056: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6057: \%allroles, \%allgroups);
6058: $env{'user.adv'} = $userroles{'user.adv'};
6059: $env{'user.rar'} = $userroles{'user.rar'};
6060:
6061: return (\%userroles,\%firstaccenv,\%timerintenv);
6062: }
6063:
6064: sub set_arearole {
6065: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6066: unless ($nolog) {
6067: # log the associated role with the area
6068: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6069: }
6070: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6071: }
6072:
6073: sub custom_roleprivs {
6074: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6075: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6076: my $homsvr = &homeserver($rauthor,$rdomain);
6077: if (&hostname($homsvr) ne '') {
6078: my ($rdummy,$roledef)=
6079: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6080: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6081: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6082: if (defined($syspriv)) {
6083: if ($trest =~ /^$match_community$/) {
6084: $syspriv =~ s/bre\&S//;
6085: }
6086: $$allroles{'cm./'}.=':'.$syspriv;
6087: $$allroles{$spec.'./'}.=':'.$syspriv;
6088: }
6089: if ($tdomain ne '') {
6090: if (defined($dompriv)) {
6091: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6092: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6093: }
6094: if (($trest ne '') && (defined($coursepriv))) {
6095: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6096: my $rolename = $1;
6097: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6098: }
6099: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6100: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6101: }
6102: }
6103: }
6104: }
6105: }
6106:
6107: sub course_adhocrole_privs {
6108: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6109: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6110: if ($overrides{"internal.adhocpriv.$rolename"}) {
6111: my (%currprivs,%storeprivs);
6112: foreach my $item (split(/:/,$coursepriv)) {
6113: my ($priv,$restrict) = split(/\&/,$item);
6114: $currprivs{$priv} = $restrict;
6115: }
6116: my (%possadd,%possremove,%full);
6117: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6118: my ($priv,$restrict)=split(/\&/,$item);
6119: $full{$priv} = $restrict;
6120: }
6121: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6122: next if ($item eq '');
6123: my ($rule,$rest) = split(/=/,$item);
6124: next unless (($rule eq 'off') || ($rule eq 'on'));
6125: foreach my $priv (split(/:/,$rest)) {
6126: if ($priv ne '') {
6127: if ($rule eq 'off') {
6128: $possremove{$priv} = 1;
6129: } else {
6130: $possadd{$priv} = 1;
6131: }
6132: }
6133: }
6134: }
6135: foreach my $priv (sort(keys(%full))) {
6136: if (exists($currprivs{$priv})) {
6137: unless (exists($possremove{$priv})) {
6138: $storeprivs{$priv} = $currprivs{$priv};
6139: }
6140: } elsif (exists($possadd{$priv})) {
6141: $storeprivs{$priv} = $full{$priv};
6142: }
6143: }
6144: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6145: }
6146: return $coursepriv;
6147: }
6148:
6149: sub group_roleprivs {
6150: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6151: my $access = 1;
6152: my $now = time;
6153: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6154: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6155: if ($access) {
6156: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6157: $$allgroups{$course}{$group} .=':'.$group_privs;
6158: }
6159: }
6160:
6161: sub standard_roleprivs {
6162: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6163: if (defined($pr{$trole.':s'})) {
6164: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6165: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6166: }
6167: if ($tdomain ne '') {
6168: if (defined($pr{$trole.':d'})) {
6169: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6170: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6171: }
6172: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6173: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6174: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6175: }
6176: }
6177: }
6178:
6179: sub set_userprivs {
6180: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6181: my $author=0;
6182: my $adv=0;
6183: my $rar=0;
6184: my %grouproles = ();
6185: if (keys(%{$allgroups}) > 0) {
6186: my @groupkeys;
6187: foreach my $role (keys(%{$allroles})) {
6188: push(@groupkeys,$role);
6189: }
6190: if (ref($groups_roles) eq 'HASH') {
6191: foreach my $key (keys(%{$groups_roles})) {
6192: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6193: push(@groupkeys,$key);
6194: }
6195: }
6196: }
6197: if (@groupkeys > 0) {
6198: foreach my $role (@groupkeys) {
6199: my ($trole,$area,$sec,$extendedarea);
6200: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6201: $trole = $1;
6202: $area = $2;
6203: $sec = $3;
6204: $extendedarea = $area.$sec;
6205: if (exists($$allgroups{$area})) {
6206: foreach my $group (keys(%{$$allgroups{$area}})) {
6207: my $spec = $trole.'.'.$extendedarea;
6208: $grouproles{$spec.'.'.$area.'/'.$group} =
6209: $$allgroups{$area}{$group};
6210: }
6211: }
6212: }
6213: }
6214: }
6215: }
6216: foreach my $group (keys(%grouproles)) {
6217: $$allroles{$group} = $grouproles{$group};
6218: }
6219: foreach my $role (keys(%{$allroles})) {
6220: my %thesepriv;
6221: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6222: foreach my $item (split(/:/,$$allroles{$role})) {
6223: if ($item ne '') {
6224: my ($privilege,$restrictions)=split(/&/,$item);
6225: if ($restrictions eq '') {
6226: $thesepriv{$privilege}='F';
6227: } elsif ($thesepriv{$privilege} ne 'F') {
6228: $thesepriv{$privilege}.=$restrictions;
6229: }
6230: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6231: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6232: }
6233: }
6234: my $thesestr='';
6235: foreach my $priv (sort(keys(%thesepriv))) {
6236: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6237: }
6238: $userroles->{'user.priv.'.$role} = $thesestr;
6239: }
6240: return ($author,$adv,$rar);
6241: }
6242:
6243: sub role_status {
6244: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6245: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6246: my ($one,$two) = split(m{\./},$rolekey,2);
6247: (undef,undef,$$role) = split(/\./,$one,3);
6248: unless (!defined($$role) || $$role eq '') {
6249: $$where = '/'.$two;
6250: $$trolecode=$$role.'.'.$$where;
6251: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6252: $$tstatus='is';
6253: if ($$tstart && $$tstart>$update) {
6254: $$tstatus='future';
6255: if ($$tstart<$now) {
6256: if ($$tstart && $$tstart>$refresh) {
6257: if (($$where ne '') && ($$role ne '')) {
6258: my (%allroles,%allgroups,$group_privs,
6259: %groups_roles,@rolecodes);
6260: my %userroles = (
6261: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6262: );
6263: @rolecodes = ('cm');
6264: my $spec=$$role.'.'.$$where;
6265: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6266: if ($$role =~ /^cr\//) {
6267: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6268: push(@rolecodes,'cr');
6269: } elsif ($$role eq 'gr') {
6270: push(@rolecodes,$$role);
6271: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6272: $env{'user.name'});
6273: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6274: (undef,my $group_privs) = split(/\//,$trole);
6275: $group_privs = &unescape($group_privs);
6276: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6277: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6278: &get_groups_roles($tdomain,$trest,
6279: \%course_roles,\@rolecodes,
6280: \%groups_roles);
6281: } else {
6282: push(@rolecodes,$$role);
6283: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6284: }
6285: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6286: \%groups_roles);
6287: &appenv(\%userroles,\@rolecodes);
6288: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6289: }
6290: }
6291: $$tstatus = 'is';
6292: }
6293: }
6294: if ($$tend) {
6295: if ($$tend<$update) {
6296: $$tstatus='expired';
6297: } elsif ($$tend<$now) {
6298: $$tstatus='will_not';
6299: }
6300: }
6301: }
6302: }
6303: }
6304:
6305: sub get_groups_roles {
6306: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6307: return unless((ref($cdom_courseroles) eq 'HASH') &&
6308: (ref($rolecodes) eq 'ARRAY') &&
6309: (ref($groups_roles) eq 'HASH'));
6310: if (keys(%{$cdom_courseroles}) > 0) {
6311: my ($cnum) = ($rest =~ /^($match_courseid)/);
6312: if ($cdom ne '' && $cnum ne '') {
6313: foreach my $key (keys(%{$cdom_courseroles})) {
6314: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6315: my $crsrole = $1;
6316: my $crssec = $2;
6317: if ($crsrole =~ /^cr/) {
6318: unless (grep(/^cr$/,@{$rolecodes})) {
6319: push(@{$rolecodes},'cr');
6320: }
6321: } else {
6322: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6323: push(@{$rolecodes},$crsrole);
6324: }
6325: }
6326: my $rolekey = "$crsrole./$cdom/$cnum";
6327: if ($crssec ne '') {
6328: $rolekey .= "/$crssec";
6329: }
6330: $rolekey .= './';
6331: $groups_roles->{$rolekey} = $rolecodes;
6332: }
6333: }
6334: }
6335: }
6336: return;
6337: }
6338:
6339: sub delete_env_groupprivs {
6340: my ($where,$courseroles,$possroles) = @_;
6341: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6342: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6343: unless (ref($courseroles->{$udom}) eq 'HASH') {
6344: %{$courseroles->{$udom}} =
6345: &get_my_roles('','','userroles',['active'],
6346: $possroles,[$udom],1);
6347: }
6348: if (ref($courseroles->{$udom}) eq 'HASH') {
6349: foreach my $item (keys(%{$courseroles->{$udom}})) {
6350: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6351: my $area = '/'.$cdom.'/'.$cnum;
6352: my $privkey = "user.priv.$crsrole.$area";
6353: if ($crssec ne '') {
6354: $privkey .= '/'.$crssec;
6355: }
6356: $privkey .= ".$area/$group";
6357: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6358: }
6359: }
6360: return;
6361: }
6362:
6363: sub check_adhoc_privs {
6364: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6365: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6366: if ($sec) {
6367: $cckey .= '/'.$sec;
6368: }
6369: my $setprivs;
6370: if ($env{$cckey}) {
6371: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6372: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6373: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6374: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6375: $setprivs = 1;
6376: }
6377: } else {
6378: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6379: $setprivs = 1;
6380: }
6381: return $setprivs;
6382: }
6383:
6384: sub set_adhoc_privileges {
6385: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6386: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6387: my $area = '/'.$dcdom.'/'.$pickedcourse;
6388: if ($sec ne '') {
6389: $area .= '/'.$sec;
6390: }
6391: my $spec = $role.'.'.$area;
6392: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6393: $env{'user.name'},1);
6394: my %rolehash = ();
6395: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6396: my $rolename = $1;
6397: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6398: my %domdef = &get_domain_defaults($dcdom);
6399: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6400: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6401: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6402: }
6403: }
6404: } else {
6405: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6406: }
6407: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6408: &appenv(\%userroles,[$role,'cm']);
6409: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6410: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6411: &appenv( {'request.role' => $spec,
6412: 'request.role.domain' => $dcdom,
6413: 'request.course.sec' => $sec,
6414: }
6415: );
6416: my $tadv=0;
6417: if (&allowed('adv') eq 'F') { $tadv=1; }
6418: &appenv({'request.role.adv' => $tadv});
6419: }
6420: }
6421:
6422: # --------------------------------------------------------------- get interface
6423:
6424: sub get {
6425: my ($namespace,$storearr,$udomain,$uname)=@_;
6426: my $items='';
6427: foreach my $item (@$storearr) {
6428: $items.=&escape($item).'&';
6429: }
6430: $items=~s/\&$//;
6431: if (!$udomain) { $udomain=$env{'user.domain'}; }
6432: if (!$uname) { $uname=$env{'user.name'}; }
6433: my $uhome=&homeserver($uname,$udomain);
6434:
6435: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6436: my @pairs=split(/\&/,$rep);
6437: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6438: return @pairs;
6439: }
6440: my %returnhash=();
6441: my $i=0;
6442: foreach my $item (@$storearr) {
6443: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6444: $i++;
6445: }
6446: return %returnhash;
6447: }
6448:
6449: # --------------------------------------------------------------- del interface
6450:
6451: sub del {
6452: my ($namespace,$storearr,$udomain,$uname)=@_;
6453: my $items='';
6454: foreach my $item (@$storearr) {
6455: $items.=&escape($item).'&';
6456: }
6457:
6458: $items=~s/\&$//;
6459: if (!$udomain) { $udomain=$env{'user.domain'}; }
6460: if (!$uname) { $uname=$env{'user.name'}; }
6461: my $uhome=&homeserver($uname,$udomain);
6462: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6463: }
6464:
6465: # -------------------------------------------------------------- dump interface
6466:
6467: sub unserialize {
6468: my ($rep, $escapedkeys) = @_;
6469:
6470: return {} if $rep =~ /^error/;
6471:
6472: my %returnhash=();
6473: foreach my $item (split(/\&/,$rep)) {
6474: my ($key, $value) = split(/=/, $item, 2);
6475: $key = unescape($key) unless $escapedkeys;
6476: next if $key =~ /^error: 2 /;
6477: $returnhash{$key} = &thaw_unescape($value);
6478: }
6479: #return %returnhash;
6480: return \%returnhash;
6481: }
6482:
6483: # see Lond::dump_with_regexp
6484: # if $escapedkeys hash keys won't get unescaped.
6485: sub dump {
6486: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6487: if (!$udomain) { $udomain=$env{'user.domain'}; }
6488: if (!$uname) { $uname=$env{'user.name'}; }
6489: my $uhome=&homeserver($uname,$udomain);
6490:
6491: if ($regexp) {
6492: $regexp=&escape($regexp);
6493: } else {
6494: $regexp='.';
6495: }
6496: if (grep { $_ eq $uhome } current_machine_ids()) {
6497: # user is hosted on this machine
6498: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6499: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6500: return %{unserialize($reply, $escapedkeys)};
6501: }
6502: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6503: my @pairs=split(/\&/,$rep);
6504: my %returnhash=();
6505: if (!($rep =~ /^error/ )) {
6506: foreach my $item (@pairs) {
6507: my ($key,$value)=split(/=/,$item,2);
6508: $key = unescape($key) unless $escapedkeys;
6509: #$key = &unescape($key);
6510: next if ($key =~ /^error: 2 /);
6511: $returnhash{$key}=&thaw_unescape($value);
6512: }
6513: }
6514: return %returnhash;
6515: }
6516:
6517:
6518: # --------------------------------------------------------- dumpstore interface
6519:
6520: sub dumpstore {
6521: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6522: # same as dump but keys must be escaped. They may contain colon separated
6523: # lists of values that may themself contain colons (e.g. symbs).
6524: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6525: }
6526:
6527: # -------------------------------------------------------------- keys interface
6528:
6529: sub getkeys {
6530: my ($namespace,$udomain,$uname)=@_;
6531: if (!$udomain) { $udomain=$env{'user.domain'}; }
6532: if (!$uname) { $uname=$env{'user.name'}; }
6533: my $uhome=&homeserver($uname,$udomain);
6534: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6535: my @keyarray=();
6536: foreach my $key (split(/\&/,$rep)) {
6537: next if ($key =~ /^error: 2 /);
6538: push(@keyarray,&unescape($key));
6539: }
6540: return @keyarray;
6541: }
6542:
6543: # --------------------------------------------------------------- currentdump
6544: sub currentdump {
6545: my ($courseid,$sdom,$sname)=@_;
6546: $courseid = $env{'request.course.id'} if (! defined($courseid));
6547: $sdom = $env{'user.domain'} if (! defined($sdom));
6548: $sname = $env{'user.name'} if (! defined($sname));
6549: my $uhome = &homeserver($sname,$sdom);
6550: my $rep;
6551:
6552: if (grep { $_ eq $uhome } current_machine_ids()) {
6553: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6554: $courseid)));
6555: } else {
6556: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6557: }
6558:
6559: return if ($rep =~ /^(error:|no_such_host)/);
6560: #
6561: my %returnhash=();
6562: #
6563: if ($rep eq 'unknown_cmd') {
6564: # an old lond will not know currentdump
6565: # Do a dump and make it look like a currentdump
6566: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6567: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6568: my %hash = @tmp;
6569: @tmp=();
6570: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6571: } else {
6572: my @pairs=split(/\&/,$rep);
6573: foreach my $pair (@pairs) {
6574: my ($key,$value)=split(/=/,$pair,2);
6575: my ($symb,$param) = split(/:/,$key);
6576: $returnhash{&unescape($symb)}->{&unescape($param)} =
6577: &thaw_unescape($value);
6578: }
6579: }
6580: return %returnhash;
6581: }
6582:
6583: sub convert_dump_to_currentdump{
6584: my %hash = %{shift()};
6585: my %returnhash;
6586: # Code ripped from lond, essentially. The only difference
6587: # here is the unescaping done by lonnet::dump(). Conceivably
6588: # we might run in to problems with parameter names =~ /^v\./
6589: while (my ($key,$value) = each(%hash)) {
6590: my ($v,$symb,$param) = split(/:/,$key);
6591: $symb = &unescape($symb);
6592: $param = &unescape($param);
6593: next if ($v eq 'version' || $symb eq 'keys');
6594: next if (exists($returnhash{$symb}) &&
6595: exists($returnhash{$symb}->{$param}) &&
6596: $returnhash{$symb}->{'v.'.$param} > $v);
6597: $returnhash{$symb}->{$param}=$value;
6598: $returnhash{$symb}->{'v.'.$param}=$v;
6599: }
6600: #
6601: # Remove all of the keys in the hashes which keep track of
6602: # the version of the parameter.
6603: while (my ($symb,$param_hash) = each(%returnhash)) {
6604: # use a foreach because we are going to delete from the hash.
6605: foreach my $key (keys(%$param_hash)) {
6606: delete($param_hash->{$key}) if ($key =~ /^v\./);
6607: }
6608: }
6609: return \%returnhash;
6610: }
6611:
6612: # ------------------------------------------------------ critical inc interface
6613:
6614: sub cinc {
6615: return &inc(@_,'critical');
6616: }
6617:
6618: # --------------------------------------------------------------- inc interface
6619:
6620: sub inc {
6621: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6622: if (!$udomain) { $udomain=$env{'user.domain'}; }
6623: if (!$uname) { $uname=$env{'user.name'}; }
6624: my $uhome=&homeserver($uname,$udomain);
6625: my $items='';
6626: if (! ref($store)) {
6627: # got a single value, so use that instead
6628: $items = &escape($store).'=&';
6629: } elsif (ref($store) eq 'SCALAR') {
6630: $items = &escape($$store).'=&';
6631: } elsif (ref($store) eq 'ARRAY') {
6632: $items = join('=&',map {&escape($_);} @{$store});
6633: } elsif (ref($store) eq 'HASH') {
6634: while (my($key,$value) = each(%{$store})) {
6635: $items.= &escape($key).'='.&escape($value).'&';
6636: }
6637: }
6638: $items=~s/\&$//;
6639: if ($critical) {
6640: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6641: } else {
6642: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6643: }
6644: }
6645:
6646: # --------------------------------------------------------------- put interface
6647:
6648: sub put {
6649: my ($namespace,$storehash,$udomain,$uname)=@_;
6650: if (!$udomain) { $udomain=$env{'user.domain'}; }
6651: if (!$uname) { $uname=$env{'user.name'}; }
6652: my $uhome=&homeserver($uname,$udomain);
6653: my $items='';
6654: foreach my $item (keys(%$storehash)) {
6655: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6656: }
6657: $items=~s/\&$//;
6658: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6659: }
6660:
6661: # ------------------------------------------------------------ newput interface
6662:
6663: sub newput {
6664: my ($namespace,$storehash,$udomain,$uname)=@_;
6665: if (!$udomain) { $udomain=$env{'user.domain'}; }
6666: if (!$uname) { $uname=$env{'user.name'}; }
6667: my $uhome=&homeserver($uname,$udomain);
6668: my $items='';
6669: foreach my $key (keys(%$storehash)) {
6670: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6671: }
6672: $items=~s/\&$//;
6673: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6674: }
6675:
6676: # --------------------------------------------------------- putstore interface
6677:
6678: sub putstore {
6679: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6680: if (!$udomain) { $udomain=$env{'user.domain'}; }
6681: if (!$uname) { $uname=$env{'user.name'}; }
6682: my $uhome=&homeserver($uname,$udomain);
6683: my $items='';
6684: foreach my $key (keys(%$storehash)) {
6685: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6686: }
6687: $items=~s/\&$//;
6688: my $esc_symb=&escape($symb);
6689: my $esc_v=&escape($version);
6690: my $reply =
6691: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6692: $uhome);
6693: if (($tolog) && ($reply eq 'ok')) {
6694: my $namevalue='';
6695: foreach my $key (keys(%{$storehash})) {
6696: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6697: }
6698: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6699: '&host='.&escape($perlvar{'lonHostID'}).
6700: '&version='.$esc_v.
6701: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6702: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6703: }
6704: if ($reply eq 'unknown_cmd') {
6705: # gfall back to way things use to be done
6706: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6707: $uname);
6708: }
6709: return $reply;
6710: }
6711:
6712: sub old_putstore {
6713: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6714: if (!$udomain) { $udomain=$env{'user.domain'}; }
6715: if (!$uname) { $uname=$env{'user.name'}; }
6716: my $uhome=&homeserver($uname,$udomain);
6717: my %newstorehash;
6718: foreach my $item (keys(%$storehash)) {
6719: my $key = $version.':'.&escape($symb).':'.$item;
6720: $newstorehash{$key} = $storehash->{$item};
6721: }
6722: my $items='';
6723: my %allitems = ();
6724: foreach my $item (keys(%newstorehash)) {
6725: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6726: my $key = $1.':keys:'.$2;
6727: $allitems{$key} .= $3.':';
6728: }
6729: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6730: }
6731: foreach my $item (keys(%allitems)) {
6732: $allitems{$item} =~ s/\:$//;
6733: $items.= $item.'='.$allitems{$item}.'&';
6734: }
6735: $items=~s/\&$//;
6736: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6737: }
6738:
6739: # ------------------------------------------------------ critical put interface
6740:
6741: sub cput {
6742: my ($namespace,$storehash,$udomain,$uname)=@_;
6743: if (!$udomain) { $udomain=$env{'user.domain'}; }
6744: if (!$uname) { $uname=$env{'user.name'}; }
6745: my $uhome=&homeserver($uname,$udomain);
6746: my $items='';
6747: foreach my $item (keys(%$storehash)) {
6748: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6749: }
6750: $items=~s/\&$//;
6751: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6752: }
6753:
6754: # -------------------------------------------------------------- eget interface
6755:
6756: sub eget {
6757: my ($namespace,$storearr,$udomain,$uname)=@_;
6758: my $items='';
6759: foreach my $item (@$storearr) {
6760: $items.=&escape($item).'&';
6761: }
6762: $items=~s/\&$//;
6763: if (!$udomain) { $udomain=$env{'user.domain'}; }
6764: if (!$uname) { $uname=$env{'user.name'}; }
6765: my $uhome=&homeserver($uname,$udomain);
6766: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6767: my @pairs=split(/\&/,$rep);
6768: my %returnhash=();
6769: my $i=0;
6770: foreach my $item (@$storearr) {
6771: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6772: $i++;
6773: }
6774: return %returnhash;
6775: }
6776:
6777: # ------------------------------------------------------------ tmpput interface
6778: sub tmpput {
6779: my ($storehash,$server,$context)=@_;
6780: my $items='';
6781: foreach my $item (keys(%$storehash)) {
6782: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6783: }
6784: $items=~s/\&$//;
6785: if (defined($context)) {
6786: $items .= ':'.&escape($context);
6787: }
6788: return &reply("tmpput:$items",$server);
6789: }
6790:
6791: # ------------------------------------------------------------ tmpget interface
6792: sub tmpget {
6793: my ($token,$server)=@_;
6794: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6795: my $rep=&reply("tmpget:$token",$server);
6796: my %returnhash;
6797: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6798: return %returnhash;
6799: }
6800: foreach my $item (split(/\&/,$rep)) {
6801: my ($key,$value)=split(/=/,$item);
6802: $returnhash{&unescape($key)}=&thaw_unescape($value);
6803: }
6804: return %returnhash;
6805: }
6806:
6807: # ------------------------------------------------------------ tmpdel interface
6808: sub tmpdel {
6809: my ($token,$server)=@_;
6810: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6811: return &reply("tmpdel:$token",$server);
6812: }
6813:
6814: # ------------------------------------------------------------ get_timebased_id
6815:
6816: sub get_timebased_id {
6817: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6818: $maxtries) = @_;
6819: my ($newid,$error,$dellock);
6820: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6821: return ('','ok','invalid call to get suffix');
6822: }
6823:
6824: # set defaults for any optional args for which values were not supplied
6825: if ($who eq '') {
6826: $who = $env{'user.name'}.':'.$env{'user.domain'};
6827: }
6828: if (!$locktries) {
6829: $locktries = 3;
6830: }
6831: if (!$maxtries) {
6832: $maxtries = 10;
6833: }
6834:
6835: if (($cdom eq '') || ($cnum eq '')) {
6836: if ($env{'request.course.id'}) {
6837: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6838: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6839: }
6840: if (($cdom eq '') || ($cnum eq '')) {
6841: return ('','ok','call to get suffix not in course context');
6842: }
6843: }
6844:
6845: # construct locking item
6846: my $lockhash = {
6847: $prefix."\0".'locked_'.$keyid => $who,
6848: };
6849: my $tries = 0;
6850:
6851: # attempt to get lock on nohist_$namespace file
6852: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6853: while (($gotlock ne 'ok') && $tries <$locktries) {
6854: $tries ++;
6855: sleep 1;
6856: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6857: }
6858:
6859: # attempt to get unique identifier, based on current timestamp
6860: if ($gotlock eq 'ok') {
6861: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6862: my $id = time;
6863: $newid = $id;
6864: if ($idtype eq 'addcode') {
6865: $newid .= &sixnum_code();
6866: }
6867: my $idtries = 0;
6868: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6869: if ($idtype eq 'concat') {
6870: $newid = $id.$idtries;
6871: } elsif ($idtype eq 'addcode') {
6872: $newid = $newid.&sixnum_code();
6873: } else {
6874: $newid ++;
6875: }
6876: $idtries ++;
6877: }
6878: if (!exists($inuse{$prefix."\0".$newid})) {
6879: my %new_item = (
6880: $prefix."\0".$newid => $who,
6881: );
6882: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6883: $cdom,$cnum);
6884: if ($putresult ne 'ok') {
6885: undef($newid);
6886: $error = 'error saving new item: '.$putresult;
6887: }
6888: } else {
6889: undef($newid);
6890: $error = ('error: no unique suffix available for the new item ');
6891: }
6892: # remove lock
6893: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6894: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6895: } else {
6896: $error = "error: could not obtain lockfile\n";
6897: $dellock = 'ok';
6898: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6899: $dellock = 'nolock';
6900: }
6901: }
6902: return ($newid,$dellock,$error);
6903: }
6904:
6905: sub sixnum_code {
6906: my $code;
6907: for (0..6) {
6908: $code .= int( rand(9) );
6909: }
6910: return $code;
6911: }
6912:
6913: # -------------------------------------------------- portfolio access checking
6914:
6915: sub portfolio_access {
6916: my ($requrl,$clientip) = @_;
6917: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6918: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6919: if ($result) {
6920: my %setters;
6921: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6922: my ($startblock,$endblock) =
6923: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6924: if ($startblock && $endblock) {
6925: return 'B';
6926: }
6927: } else {
6928: my ($startblock,$endblock) =
6929: &Apache::loncommon::blockcheck(\%setters,'port');
6930: if ($startblock && $endblock) {
6931: return 'B';
6932: }
6933: }
6934: }
6935: if ($result eq 'ok') {
6936: return 'F';
6937: } elsif ($result =~ /^[^:]+:guest_/) {
6938: return 'A';
6939: }
6940: return '';
6941: }
6942:
6943: sub get_portfolio_access {
6944: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6945:
6946: if (!ref($access_hash)) {
6947: my $current_perms = &get_portfile_permissions($udom,$unum);
6948: my %access_controls = &get_access_controls($current_perms,$group,
6949: $file_name);
6950: $access_hash = $access_controls{$file_name};
6951: }
6952:
6953: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6954: my $now = time;
6955: if (ref($access_hash) eq 'HASH') {
6956: foreach my $key (keys(%{$access_hash})) {
6957: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6958: if ($start > $now) {
6959: next;
6960: }
6961: if ($end && $end<$now) {
6962: next;
6963: }
6964: if ($scope eq 'public') {
6965: $public = $key;
6966: last;
6967: } elsif ($scope eq 'guest') {
6968: $guest = $key;
6969: } elsif ($scope eq 'domains') {
6970: push(@domains,$key);
6971: } elsif ($scope eq 'users') {
6972: push(@users,$key);
6973: } elsif ($scope eq 'course') {
6974: push(@courses,$key);
6975: } elsif ($scope eq 'group') {
6976: push(@groups,$key);
6977: } elsif ($scope eq 'ip') {
6978: push(@ips,$key);
6979: }
6980: }
6981: if ($public) {
6982: return 'ok';
6983: } elsif (@ips > 0) {
6984: my $allowed;
6985: foreach my $ipkey (@ips) {
6986: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6987: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6988: $allowed = 1;
6989: last;
6990: }
6991: }
6992: }
6993: if ($allowed) {
6994: return 'ok';
6995: }
6996: }
6997: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6998: if ($guest) {
6999: return $guest;
7000: }
7001: } else {
7002: if (@domains > 0) {
7003: foreach my $domkey (@domains) {
7004: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7005: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7006: return 'ok';
7007: }
7008: }
7009: }
7010: }
7011: if (@users > 0) {
7012: foreach my $userkey (@users) {
7013: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7014: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7015: if (ref($item) eq 'HASH') {
7016: if (($item->{'uname'} eq $env{'user.name'}) &&
7017: ($item->{'udom'} eq $env{'user.domain'})) {
7018: return 'ok';
7019: }
7020: }
7021: }
7022: }
7023: }
7024: }
7025: my %roleshash;
7026: my @courses_and_groups = @courses;
7027: push(@courses_and_groups,@groups);
7028: if (@courses_and_groups > 0) {
7029: my (%allgroups,%allroles);
7030: my ($start,$end,$role,$sec,$group);
7031: foreach my $envkey (%env) {
7032: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7033: my $cid = $2.'_'.$3;
7034: if ($1 eq 'gr') {
7035: $group = $4;
7036: $allgroups{$cid}{$group} = $env{$envkey};
7037: } else {
7038: if ($4 eq '') {
7039: $sec = 'none';
7040: } else {
7041: $sec = $4;
7042: }
7043: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7044: }
7045: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7046: my $cid = $2.'_'.$3;
7047: if ($4 eq '') {
7048: $sec = 'none';
7049: } else {
7050: $sec = $4;
7051: }
7052: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7053: }
7054: }
7055: if (keys(%allroles) == 0) {
7056: return;
7057: }
7058: foreach my $key (@courses_and_groups) {
7059: my %content = %{$$access_hash{$key}};
7060: my $cnum = $content{'number'};
7061: my $cdom = $content{'domain'};
7062: my $cid = $cdom.'_'.$cnum;
7063: if (!exists($allroles{$cid})) {
7064: next;
7065: }
7066: foreach my $role_id (keys(%{$content{'roles'}})) {
7067: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7068: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7069: my @status = @{$content{'roles'}{$role_id}{'access'}};
7070: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7071: foreach my $role (keys(%{$allroles{$cid}})) {
7072: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7073: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7074: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7075: if (grep/^all$/,@sections) {
7076: return 'ok';
7077: } else {
7078: if (grep/^$sec$/,@sections) {
7079: return 'ok';
7080: }
7081: }
7082: }
7083: }
7084: if (keys(%{$allgroups{$cid}}) == 0) {
7085: if (grep/^none$/,@groups) {
7086: return 'ok';
7087: }
7088: } else {
7089: if (grep/^all$/,@groups) {
7090: return 'ok';
7091: }
7092: foreach my $group (keys(%{$allgroups{$cid}})) {
7093: if (grep/^$group$/,@groups) {
7094: return 'ok';
7095: }
7096: }
7097: }
7098: }
7099: }
7100: }
7101: }
7102: }
7103: if ($guest) {
7104: return $guest;
7105: }
7106: }
7107: }
7108: return;
7109: }
7110:
7111: sub course_group_datechecker {
7112: my ($dates,$now,$status) = @_;
7113: my ($start,$end) = split(/\./,$dates);
7114: if (!$start && !$end) {
7115: return 'ok';
7116: }
7117: if (grep/^active$/,@{$status}) {
7118: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7119: return 'ok';
7120: }
7121: }
7122: if (grep/^previous$/,@{$status}) {
7123: if ($end > $now ) {
7124: return 'ok';
7125: }
7126: }
7127: if (grep/^future$/,@{$status}) {
7128: if ($start > $now) {
7129: return 'ok';
7130: }
7131: }
7132: return;
7133: }
7134:
7135: sub parse_portfolio_url {
7136: my ($url) = @_;
7137:
7138: my ($type,$udom,$unum,$group,$file_name);
7139:
7140: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7141: $type = 1;
7142: $udom = $1;
7143: $unum = $2;
7144: $file_name = $3;
7145: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7146: $type = 2;
7147: $udom = $1;
7148: $unum = $2;
7149: $group = $3;
7150: $file_name = $3.'/'.$4;
7151: }
7152: if (wantarray) {
7153: return ($type,$udom,$unum,$file_name,$group);
7154: }
7155: return $type;
7156: }
7157:
7158: sub is_portfolio_url {
7159: my ($url) = @_;
7160: return scalar(&parse_portfolio_url($url));
7161: }
7162:
7163: sub is_portfolio_file {
7164: my ($file) = @_;
7165: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7166: return 1;
7167: }
7168: return;
7169: }
7170:
7171: sub usertools_access {
7172: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7173: my ($access,%tools);
7174: if ($context eq '') {
7175: $context = 'tools';
7176: }
7177: if ($context eq 'requestcourses') {
7178: %tools = (
7179: official => 1,
7180: unofficial => 1,
7181: community => 1,
7182: textbook => 1,
7183: placement => 1,
7184: lti => 1,
7185: );
7186: } elsif ($context eq 'requestauthor') {
7187: %tools = (
7188: requestauthor => 1,
7189: );
7190: } else {
7191: %tools = (
7192: aboutme => 1,
7193: blog => 1,
7194: webdav => 1,
7195: portfolio => 1,
7196: );
7197: }
7198: return if (!defined($tools{$tool}));
7199:
7200: if (($udom eq '') || ($uname eq '')) {
7201: $udom = $env{'user.domain'};
7202: $uname = $env{'user.name'};
7203: }
7204:
7205: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7206: if ($action ne 'reload') {
7207: if ($context eq 'requestcourses') {
7208: return $env{'environment.canrequest.'.$tool};
7209: } elsif ($context eq 'requestauthor') {
7210: return $env{'environment.canrequest.author'};
7211: } else {
7212: return $env{'environment.availabletools.'.$tool};
7213: }
7214: }
7215: }
7216:
7217: my ($toolstatus,$inststatus,$envkey);
7218: if ($context eq 'requestauthor') {
7219: $envkey = $context;
7220: } else {
7221: $envkey = $context.'.'.$tool;
7222: }
7223:
7224: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7225: ($action ne 'reload')) {
7226: $toolstatus = $env{'environment.'.$envkey};
7227: $inststatus = $env{'environment.inststatus'};
7228: } else {
7229: if (ref($userenvref) eq 'HASH') {
7230: $toolstatus = $userenvref->{$envkey};
7231: $inststatus = $userenvref->{'inststatus'};
7232: } else {
7233: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7234: $toolstatus = $userenv{$envkey};
7235: $inststatus = $userenv{'inststatus'};
7236: }
7237: }
7238:
7239: if ($toolstatus ne '') {
7240: if ($toolstatus) {
7241: $access = 1;
7242: } else {
7243: $access = 0;
7244: }
7245: return $access;
7246: }
7247:
7248: my ($is_adv,%domdef);
7249: if (ref($is_advref) eq 'HASH') {
7250: $is_adv = $is_advref->{'is_adv'};
7251: } else {
7252: $is_adv = &is_advanced_user($udom,$uname);
7253: }
7254: if (ref($domdefref) eq 'HASH') {
7255: %domdef = %{$domdefref};
7256: } else {
7257: %domdef = &get_domain_defaults($udom);
7258: }
7259: if (ref($domdef{$tool}) eq 'HASH') {
7260: if ($is_adv) {
7261: if ($domdef{$tool}{'_LC_adv'} ne '') {
7262: if ($domdef{$tool}{'_LC_adv'}) {
7263: $access = 1;
7264: } else {
7265: $access = 0;
7266: }
7267: return $access;
7268: }
7269: }
7270: if ($inststatus ne '') {
7271: my ($hasaccess,$hasnoaccess);
7272: foreach my $affiliation (split(/:/,$inststatus)) {
7273: if ($domdef{$tool}{$affiliation} ne '') {
7274: if ($domdef{$tool}{$affiliation}) {
7275: $hasaccess = 1;
7276: } else {
7277: $hasnoaccess = 1;
7278: }
7279: }
7280: }
7281: if ($hasaccess || $hasnoaccess) {
7282: if ($hasaccess) {
7283: $access = 1;
7284: } elsif ($hasnoaccess) {
7285: $access = 0;
7286: }
7287: return $access;
7288: }
7289: } else {
7290: if ($domdef{$tool}{'default'} ne '') {
7291: if ($domdef{$tool}{'default'}) {
7292: $access = 1;
7293: } elsif ($domdef{$tool}{'default'} == 0) {
7294: $access = 0;
7295: }
7296: return $access;
7297: }
7298: }
7299: } else {
7300: if (($context eq 'tools') && ($tool ne 'webdav')) {
7301: $access = 1;
7302: } else {
7303: $access = 0;
7304: }
7305: return $access;
7306: }
7307: }
7308:
7309: sub is_course_owner {
7310: my ($cdom,$cnum,$udom,$uname) = @_;
7311: if (($udom eq '') || ($uname eq '')) {
7312: $udom = $env{'user.domain'};
7313: $uname = $env{'user.name'};
7314: }
7315: unless (($udom eq '') || ($uname eq '')) {
7316: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7317: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7318: return 1;
7319: } else {
7320: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7321: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7322: return 1;
7323: }
7324: }
7325: }
7326: }
7327: return;
7328: }
7329:
7330: sub is_advanced_user {
7331: my ($udom,$uname) = @_;
7332: if ($udom ne '' && $uname ne '') {
7333: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7334: if (wantarray) {
7335: return ($env{'user.adv'},$env{'user.author'});
7336: } else {
7337: return $env{'user.adv'};
7338: }
7339: }
7340: }
7341: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7342: my %allroles;
7343: my ($is_adv,$is_author);
7344: foreach my $role (keys(%roleshash)) {
7345: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7346: my $area = '/'.$tdomain.'/'.$trest;
7347: if ($sec ne '') {
7348: $area .= '/'.$sec;
7349: }
7350: if (($area ne '') && ($trole ne '')) {
7351: my $spec=$trole.'.'.$area;
7352: if ($trole =~ /^cr\//) {
7353: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7354: } elsif ($trole ne 'gr') {
7355: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7356: }
7357: if ($trole eq 'au') {
7358: $is_author = 1;
7359: }
7360: }
7361: }
7362: foreach my $role (keys(%allroles)) {
7363: last if ($is_adv);
7364: foreach my $item (split(/:/,$allroles{$role})) {
7365: if ($item ne '') {
7366: my ($privilege,$restrictions)=split(/&/,$item);
7367: if ($privilege eq 'adv') {
7368: $is_adv = 1;
7369: last;
7370: }
7371: }
7372: }
7373: }
7374: if (wantarray) {
7375: return ($is_adv,$is_author);
7376: }
7377: return $is_adv;
7378: }
7379:
7380: sub check_can_request {
7381: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7382: my $canreq = 0;
7383: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7384: $uname = $env{'user.name'};
7385: $udom = $env{'user.domain'};
7386: }
7387: my ($types,$typename) = &Apache::loncommon::course_types();
7388: my @options = ('approval','validate','autolimit');
7389: my $optregex = join('|',@options);
7390: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7391: foreach my $type (@{$types}) {
7392: if (&usertools_access($uname,$udom,$type,undef,
7393: 'requestcourses')) {
7394: $canreq ++;
7395: if (ref($request_domains) eq 'HASH') {
7396: push(@{$request_domains->{$type}},$udom);
7397: }
7398: if ($dom eq $udom) {
7399: $can_request->{$type} = 1;
7400: }
7401: }
7402: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7403: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7404: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7405: if (@curr > 0) {
7406: foreach my $item (@curr) {
7407: if (ref($request_domains) eq 'HASH') {
7408: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7409: if ($otherdom ne '') {
7410: if (ref($request_domains->{$type}) eq 'ARRAY') {
7411: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7412: push(@{$request_domains->{$type}},$otherdom);
7413: }
7414: } else {
7415: push(@{$request_domains->{$type}},$otherdom);
7416: }
7417: }
7418: }
7419: }
7420: unless ($dom eq $env{'user.domain'}) {
7421: $canreq ++;
7422: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7423: $can_request->{$type} = 1;
7424: }
7425: }
7426: }
7427: }
7428: }
7429: }
7430: return $canreq;
7431: }
7432:
7433: # ---------------------------------------------- Custom access rule evaluation
7434:
7435: sub customaccess {
7436: my ($priv,$uri)=@_;
7437: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7438: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7439: $udom = &LONCAPA::clean_domain($udom);
7440: $ucrs = &LONCAPA::clean_username($ucrs);
7441: my $access=0;
7442: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7443: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7444: if ($type eq 'user') {
7445: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7446: my ($tdom,$tuname)=split(m{/},$scope);
7447: if ($tdom) {
7448: if ($tdom ne $env{'user.domain'}) { next; }
7449: }
7450: if ($tuname) {
7451: if ($tuname ne $env{'user.name'}) { next; }
7452: }
7453: $access=($effect eq 'allow');
7454: last;
7455: }
7456: } else {
7457: if ($role) {
7458: if ($role ne $urole) { next; }
7459: }
7460: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7461: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7462: if ($tdom) {
7463: if ($tdom ne $udom) { next; }
7464: }
7465: if ($tcrs) {
7466: if ($tcrs ne $ucrs) { next; }
7467: }
7468: if ($tsec) {
7469: if ($tsec ne $usec) { next; }
7470: }
7471: $access=($effect eq 'allow');
7472: last;
7473: }
7474: if ($realm eq '' && $role eq '') {
7475: $access=($effect eq 'allow');
7476: }
7477: }
7478: }
7479: return $access;
7480: }
7481:
7482: # ------------------------------------------------- Check for a user privilege
7483:
7484: sub allowed {
7485: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7486: my $ver_orguri=$uri;
7487: $uri=&deversion($uri);
7488: my $orguri=$uri;
7489: $uri=&declutter($uri);
7490:
7491: if ($priv eq 'evb') {
7492: # Evade communication block restrictions for specified role in a course
7493: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7494: return $1;
7495: } else {
7496: return;
7497: }
7498: }
7499:
7500: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7501: # Free bre access to adm and meta resources
7502: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7503: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7504: && ($priv eq 'bre')) {
7505: return 'F';
7506: }
7507:
7508: # Free bre access to user's own portfolio contents
7509: my ($space,$domain,$name,@dir)=split('/',$uri);
7510: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7511: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7512: my %setters;
7513: my ($startblock,$endblock) =
7514: &Apache::loncommon::blockcheck(\%setters,'port');
7515: if ($startblock && $endblock) {
7516: return 'B';
7517: } else {
7518: return 'F';
7519: }
7520: }
7521:
7522: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7523: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7524: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7525: if (exists($env{'request.course.id'})) {
7526: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7527: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7528: if (($domain eq $cdom) && ($name eq $cnum)) {
7529: my $courseprivid=$env{'request.course.id'};
7530: $courseprivid=~s/\_/\//;
7531: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7532: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7533: return $1;
7534: } else {
7535: if ($env{'request.course.sec'}) {
7536: $courseprivid.='/'.$env{'request.course.sec'};
7537: }
7538: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7539: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7540: return $2;
7541: }
7542: }
7543: }
7544: }
7545: }
7546:
7547: # Free bre to public access
7548:
7549: if ($priv eq 'bre') {
7550: my $copyright;
7551: unless ($uri =~ /ext\.tool/) {
7552: $copyright=&metadata($uri,'copyright');
7553: }
7554: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7555: return 'F';
7556: }
7557: if ($copyright eq 'priv') {
7558: $uri=~/([^\/]+)\/([^\/]+)\//;
7559: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7560: return '';
7561: }
7562: }
7563: if ($copyright eq 'domain') {
7564: $uri=~/([^\/]+)\/([^\/]+)\//;
7565: unless (($env{'user.domain'} eq $1) ||
7566: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7567: return '';
7568: }
7569: }
7570: if ($env{'request.role'}=~ /li\.\//) {
7571: # Library role, so allow browsing of resources in this domain.
7572: return 'F';
7573: }
7574: if ($copyright eq 'custom') {
7575: unless (&customaccess($priv,$uri)) { return ''; }
7576: }
7577: }
7578: # Domain coordinator is trying to create a course
7579: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7580: # uri is the requested domain in this case.
7581: # comparison to 'request.role.domain' shows if the user has selected
7582: # a role of dc for the domain in question.
7583: return 'F' if ($uri eq $env{'request.role.domain'});
7584: }
7585:
7586: my $thisallowed='';
7587: my $statecond=0;
7588: my $courseprivid='';
7589:
7590: my $ownaccess;
7591: # Community Coordinator or Assistant Co-author browsing resource space.
7592: if (($priv eq 'bro') && ($env{'user.author'})) {
7593: if ($uri eq '') {
7594: $ownaccess = 1;
7595: } else {
7596: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7597: my $udom = $env{'user.domain'};
7598: my $uname = $env{'user.name'};
7599: if ($uri =~ m{^\Q$udom\E/?$}) {
7600: $ownaccess = 1;
7601: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7602: unless ($uri =~ m{\.\./}) {
7603: $ownaccess = 1;
7604: }
7605: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7606: my $now = time;
7607: if ($uri =~ m{^([^/]+)/?$}) {
7608: my $adom = $1;
7609: foreach my $key (keys(%env)) {
7610: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7611: my ($start,$end) = split('.',$env{$key});
7612: if (($now >= $start) && (!$end || $end < $now)) {
7613: $ownaccess = 1;
7614: last;
7615: }
7616: }
7617: }
7618: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7619: my $adom = $1;
7620: my $aname = $2;
7621: foreach my $role ('ca','aa') {
7622: if ($env{"user.role.$role./$adom/$aname"}) {
7623: my ($start,$end) =
7624: split('.',$env{"user.role.$role./$adom/$aname"});
7625: if (($now >= $start) && (!$end || $end < $now)) {
7626: $ownaccess = 1;
7627: last;
7628: }
7629: }
7630: }
7631: }
7632: }
7633: }
7634: }
7635: }
7636:
7637: # Course
7638:
7639: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7640: unless (($priv eq 'bro') && (!$ownaccess)) {
7641: $thisallowed.=$1;
7642: }
7643: }
7644:
7645: # Domain
7646:
7647: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7648: =~/\Q$priv\E\&([^\:]*)/) {
7649: unless (($priv eq 'bro') && (!$ownaccess)) {
7650: $thisallowed.=$1;
7651: }
7652: }
7653:
7654: # User who is not author or co-author might still be able to edit
7655: # resource of an author in the domain (e.g., if Domain Coordinator).
7656: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7657: (&allowed('mdc',$env{'request.course.id'}))) {
7658: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7659: $thisallowed.=$1;
7660: }
7661: }
7662:
7663: # Course: uri itself is a course
7664: my $courseuri=$uri;
7665: $courseuri=~s/\_(\d)/\/$1/;
7666: $courseuri=~s/^([^\/])/\/$1/;
7667:
7668: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7669: =~/\Q$priv\E\&([^\:]*)/) {
7670: unless (($priv eq 'bro') && (!$ownaccess)) {
7671: $thisallowed.=$1;
7672: }
7673: }
7674:
7675: # URI is an uploaded document for this course, default permissions don't matter
7676: # not allowing 'edit' access (editupload) to uploaded course docs
7677: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7678: $thisallowed='';
7679: my ($match)=&is_on_map($uri);
7680: if ($match) {
7681: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7682: =~/\Q$priv\E\&([^\:]*)/) {
7683: my $value = $1;
7684: if ($noblockcheck) {
7685: $thisallowed.=$value;
7686: } else {
7687: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7688: if (@blockers > 0) {
7689: $thisallowed = 'B';
7690: } else {
7691: $thisallowed.=$value;
7692: }
7693: }
7694: }
7695: } else {
7696: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7697: if ($refuri) {
7698: if ($refuri =~ m|^/adm/|) {
7699: $thisallowed='F';
7700: } else {
7701: $refuri=&declutter($refuri);
7702: my ($match) = &is_on_map($refuri);
7703: if ($match) {
7704: if ($noblockcheck) {
7705: $thisallowed='F';
7706: } else {
7707: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7708: if (@blockers > 0) {
7709: $thisallowed = 'B';
7710: } else {
7711: $thisallowed='F';
7712: }
7713: }
7714: }
7715: }
7716: }
7717: }
7718: }
7719:
7720: if ($priv eq 'bre'
7721: && $thisallowed ne 'F'
7722: && $thisallowed ne '2'
7723: && &is_portfolio_url($uri)) {
7724: $thisallowed = &portfolio_access($uri,$clientip);
7725: }
7726:
7727: # Full access at system, domain or course-wide level? Exit.
7728: if ($thisallowed=~/F/) {
7729: return 'F';
7730: }
7731:
7732: # If this is generating or modifying users, exit with special codes
7733:
7734: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7735: if (($priv eq 'cca') || ($priv eq 'caa')) {
7736: my ($audom,$auname)=split('/',$uri);
7737: # no author name given, so this just checks on the general right to make a co-author in this domain
7738: unless ($auname) { return $thisallowed; }
7739: # an author name is given, so we are about to actually make a co-author for a certain account
7740: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7741: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7742: ($audom ne $env{'request.role.domain'}))) { return ''; }
7743: }
7744: return $thisallowed;
7745: }
7746: #
7747: # Gathered so far: system, domain and course wide privileges
7748: #
7749: # Course: See if uri or referer is an individual resource that is part of
7750: # the course
7751:
7752: if ($env{'request.course.id'}) {
7753:
7754: $courseprivid=$env{'request.course.id'};
7755: if ($env{'request.course.sec'}) {
7756: $courseprivid.='/'.$env{'request.course.sec'};
7757: }
7758: $courseprivid=~s/\_/\//;
7759: my $checkreferer=1;
7760: my ($match,$cond)=&is_on_map($uri);
7761: if ($match) {
7762: $statecond=$cond;
7763: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7764: =~/\Q$priv\E\&([^\:]*)/) {
7765: my $value = $1;
7766: if ($priv eq 'bre') {
7767: if ($noblockcheck) {
7768: $thisallowed.=$value;
7769: } else {
7770: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7771: if (@blockers > 0) {
7772: $thisallowed = 'B';
7773: } else {
7774: $thisallowed.=$value;
7775: }
7776: }
7777: } else {
7778: $thisallowed.=$value;
7779: }
7780: $checkreferer=0;
7781: }
7782: }
7783:
7784: if ($checkreferer) {
7785: my $refuri=$env{'httpref.'.$orguri};
7786: unless ($refuri) {
7787: foreach my $key (keys(%env)) {
7788: if ($key=~/^httpref\..*\*/) {
7789: my $pattern=$key;
7790: $pattern=~s/^httpref\.\/res\///;
7791: $pattern=~s/\*/\[\^\/\]\+/g;
7792: $pattern=~s/\//\\\//g;
7793: if ($orguri=~/$pattern/) {
7794: $refuri=$env{$key};
7795: }
7796: }
7797: }
7798: }
7799:
7800: if ($refuri) {
7801: $refuri=&declutter($refuri);
7802: my ($match,$cond)=&is_on_map($refuri);
7803: if ($match) {
7804: my $refstatecond=$cond;
7805: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7806: =~/\Q$priv\E\&([^\:]*)/) {
7807: my $value = $1;
7808: if ($priv eq 'bre') {
7809: if ($noblockcheck) {
7810: $thisallowed.=$value;
7811: } else {
7812: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7813: if (@blockers > 0) {
7814: $thisallowed = 'B';
7815: } else {
7816: $thisallowed.=$value;
7817: }
7818: }
7819: } else {
7820: $thisallowed.=$value;
7821: }
7822: $uri=$refuri;
7823: $statecond=$refstatecond;
7824: }
7825: }
7826: }
7827: }
7828: }
7829:
7830: #
7831: # Gathered now: all privileges that could apply, and condition number
7832: #
7833: #
7834: # Full or no access?
7835: #
7836:
7837: if ($thisallowed=~/F/) {
7838: return 'F';
7839: }
7840:
7841: unless ($thisallowed) {
7842: return '';
7843: }
7844:
7845: # Restrictions exist, deal with them
7846: #
7847: # C:according to course preferences
7848: # R:according to resource settings
7849: # L:unless locked
7850: # X:according to user session state
7851: #
7852:
7853: # Possibly locked functionality, check all courses
7854: # Locks might take effect only after 10 minutes cache expiration for other
7855: # courses, and 2 minutes for current course
7856:
7857: my $envkey;
7858: if ($thisallowed=~/L/) {
7859: foreach $envkey (keys(%env)) {
7860: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7861: my $courseid=$2;
7862: my $roleid=$1.'.'.$2;
7863: $courseid=~s/^\///;
7864: my $expiretime=600;
7865: if ($env{'request.role'} eq $roleid) {
7866: $expiretime=120;
7867: }
7868: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7869: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7870: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7871: &coursedescription($courseid,{'freshen_cache' => 1});
7872: }
7873: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7874: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7875: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7876: &log($env{'user.domain'},$env{'user.name'},
7877: $env{'user.home'},
7878: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7879: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7880: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7881: return '';
7882: }
7883: }
7884: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7885: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7886: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7887: &log($env{'user.domain'},$env{'user.name'},
7888: $env{'user.home'},
7889: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7890: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7891: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7892: return '';
7893: }
7894: }
7895: }
7896: }
7897: }
7898:
7899: #
7900: # Rest of the restrictions depend on selected course
7901: #
7902:
7903: unless ($env{'request.course.id'}) {
7904: if ($thisallowed eq 'A') {
7905: return 'A';
7906: } elsif ($thisallowed eq 'B') {
7907: return 'B';
7908: } else {
7909: return '1';
7910: }
7911: }
7912:
7913: #
7914: # Now user is definitely in a course
7915: #
7916:
7917:
7918: # Course preferences
7919:
7920: if ($thisallowed=~/C/) {
7921: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7922: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7923: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7924: =~/\Q$rolecode\E/) {
7925: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7926: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7927: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7928: $env{'request.course.id'});
7929: }
7930: return '';
7931: }
7932:
7933: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7934: =~/\Q$unamedom\E/) {
7935: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7936: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7937: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7938: $env{'request.course.id'});
7939: }
7940: return '';
7941: }
7942: }
7943:
7944: # Resource preferences
7945:
7946: if ($thisallowed=~/R/) {
7947: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7948: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7949: if (($priv ne 'pch') && ($priv ne 'plc')) {
7950: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7951: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7952: }
7953: return '';
7954: }
7955: }
7956:
7957: # Restricted by state or randomout?
7958:
7959: if ($thisallowed=~/X/) {
7960: if ($env{'acc.randomout'}) {
7961: if (!$symb) { $symb=&symbread($uri,1); }
7962: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7963: return '';
7964: }
7965: }
7966: if (&condval($statecond)) {
7967: return '2';
7968: } else {
7969: return '';
7970: }
7971: }
7972:
7973: if ($thisallowed eq 'A') {
7974: return 'A';
7975: } elsif ($thisallowed eq 'B') {
7976: return 'B';
7977: }
7978: return 'F';
7979: }
7980:
7981: # ------------------------------------------- Check construction space access
7982:
7983: sub constructaccess {
7984: my ($url,$setpriv)=@_;
7985:
7986: # We do not allow editing of previous versions of files
7987: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7988:
7989: # Get username and domain from URL
7990: my ($ownername,$ownerdomain,$ownerhome);
7991:
7992: ($ownerdomain,$ownername) =
7993: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
7994:
7995: # The URL does not really point to any authorspace, forget it
7996: unless (($ownername) && ($ownerdomain)) { return ''; }
7997:
7998: # Now we need to see if the user has access to the authorspace of
7999: # $ownername at $ownerdomain
8000:
8001: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8002: # Real author for this?
8003: $ownerhome = $env{'user.home'};
8004: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8005: return ($ownername,$ownerdomain,$ownerhome);
8006: }
8007: } else {
8008: # Co-author for this?
8009: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8010: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8011: $ownerhome = &homeserver($ownername,$ownerdomain);
8012: return ($ownername,$ownerdomain,$ownerhome);
8013: }
8014: if ($env{'request.course.id'}) {
8015: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8016: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8017: if (&allowed('mdc',$env{'request.course.id'})) {
8018: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8019: return ($ownername,$ownerdomain,$ownerhome);
8020: }
8021: }
8022: }
8023: }
8024:
8025: # We don't have any access right now. If we are not possibly going to do anything about this,
8026: # we might as well leave
8027: unless ($setpriv) { return ''; }
8028:
8029: # Backdoor access?
8030: my $allowed=&allowed('eco',$ownerdomain);
8031: # Nope
8032: unless ($allowed) { return ''; }
8033: # Looks like we may have access, but could be locked by the owner of the construction space
8034: if ($allowed eq 'U') {
8035: my %blocked=&get('environment',['domcoord.author'],
8036: $ownerdomain,$ownername);
8037: # Is blocked by owner
8038: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8039: }
8040: if (($allowed eq 'F') || ($allowed eq 'U')) {
8041: # Grant temporary access
8042: my $then=$env{'user.login.time'};
8043: my $update=$env{'user.update.time'};
8044: if (!$update) { $update = $then; }
8045: my $refresh=$env{'user.refresh.time'};
8046: if (!$refresh) { $refresh = $update; }
8047: my $now = time;
8048: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8049: $now,'ca','constructaccess');
8050: $ownerhome = &homeserver($ownername,$ownerdomain);
8051: return($ownername,$ownerdomain,$ownerhome);
8052: }
8053: # No business here
8054: return '';
8055: }
8056:
8057: # ----------------------------------------------------------- Content Blocking
8058:
8059: {
8060: # Caches for faster Course Contents display where content blocking
8061: # is in operation (i.e., interval param set) for timed quiz.
8062: #
8063: # User for whom data are being temporarily cached.
8064: my $cacheduser='';
8065: # Cached blockers for this user (a hash of blocking items).
8066: my %cachedblockers=();
8067: # When the data were last cached.
8068: my $cachedlast='';
8069:
8070: sub load_all_blockers {
8071: my ($uname,$udom,$blocks)=@_;
8072: if (($uname ne '') && ($udom ne '')) {
8073: if (($cacheduser eq $uname.':'.$udom) &&
8074: (abs($cachedlast-time)<5)) {
8075: return;
8076: }
8077: }
8078: $cachedlast=time;
8079: $cacheduser=$uname.':'.$udom;
8080: %cachedblockers = &get_commblock_resources($blocks);
8081: }
8082:
8083: sub get_comm_blocks {
8084: my ($cdom,$cnum) = @_;
8085: if ($cdom eq '' || $cnum eq '') {
8086: return unless ($env{'request.course.id'});
8087: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8088: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8089: }
8090: my %commblocks;
8091: my $hashid=$cdom.'_'.$cnum;
8092: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8093: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8094: %commblocks = %{$blocksref};
8095: } else {
8096: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8097: my $cachetime = 600;
8098: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8099: }
8100: return %commblocks;
8101: }
8102:
8103: sub get_commblock_resources {
8104: my ($blocks) = @_;
8105: my %blockers = ();
8106: return %blockers unless ($env{'request.course.id'});
8107: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8108: my %commblocks;
8109: if (ref($blocks) eq 'HASH') {
8110: %commblocks = %{$blocks};
8111: } else {
8112: %commblocks = &get_comm_blocks();
8113: }
8114: return %blockers unless (keys(%commblocks) > 0);
8115: my $navmap = Apache::lonnavmaps::navmap->new();
8116: return %blockers unless (ref($navmap));
8117: my $now = time;
8118: foreach my $block (keys(%commblocks)) {
8119: if ($block =~ /^(\d+)____(\d+)$/) {
8120: my ($start,$end) = ($1,$2);
8121: if ($start <= $now && $end >= $now) {
8122: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8123: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8124: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8125: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8126: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8127: }
8128: }
8129: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8130: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8131: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8132: }
8133: }
8134: }
8135: }
8136: }
8137: } elsif ($block =~ /^firstaccess____(.+)$/) {
8138: my $item = $1;
8139: my @to_test;
8140: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8141: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8142: my @interval;
8143: my $type = 'map';
8144: if ($item eq 'course') {
8145: $type = 'course';
8146: @interval=&EXT("resource.0.interval");
8147: } else {
8148: if ($item =~ /___\d+___/) {
8149: $type = 'resource';
8150: @interval=&EXT("resource.0.interval",$item);
8151: if (ref($navmap)) {
8152: my $res = $navmap->getBySymb($item);
8153: push(@to_test,$res);
8154: }
8155: } else {
8156: my $mapsymb = &symbread($item,1);
8157: if ($mapsymb) {
8158: if (ref($navmap)) {
8159: my $mapres = $navmap->getBySymb($mapsymb);
8160: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8161: foreach my $res (@to_test) {
8162: my $symb = $res->symb();
8163: next if ($symb eq $mapsymb);
8164: if ($symb ne '') {
8165: @interval=&EXT("resource.0.interval",$symb);
8166: if ($interval[1] eq 'map') {
8167: last;
8168: }
8169: }
8170: }
8171: }
8172: }
8173: }
8174: }
8175: if ($interval[0] =~ /^(\d+)/) {
8176: my $timelimit = $1;
8177: my $first_access;
8178: if ($type eq 'resource') {
8179: $first_access=&get_first_access($interval[1],$item);
8180: } elsif ($type eq 'map') {
8181: $first_access=&get_first_access($interval[1],undef,$item);
8182: } else {
8183: $first_access=&get_first_access($interval[1]);
8184: }
8185: if ($first_access) {
8186: my $timesup = $first_access+$timelimit;
8187: if ($timesup > $now) {
8188: my $activeblock;
8189: foreach my $res (@to_test) {
8190: if ($res->answerable()) {
8191: $activeblock = 1;
8192: last;
8193: }
8194: }
8195: if ($activeblock) {
8196: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8197: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8198: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8199: }
8200: }
8201: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8202: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8203: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8204: }
8205: }
8206: }
8207: }
8208: }
8209: }
8210: }
8211: }
8212: }
8213: }
8214: return %blockers;
8215: }
8216:
8217: sub has_comm_blocking {
8218: my ($priv,$symb,$uri,$blocks) = @_;
8219: my @blockers;
8220: return unless ($env{'request.course.id'});
8221: return unless ($priv eq 'bre');
8222: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8223: return if ($env{'request.state'} eq 'construct');
8224: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8225: return unless (keys(%cachedblockers) > 0);
8226: my (%possibles,@symbs);
8227: if (!$symb) {
8228: $symb = &symbread($uri,1,1,1,\%possibles);
8229: }
8230: if ($symb) {
8231: @symbs = ($symb);
8232: } elsif (keys(%possibles)) {
8233: @symbs = keys(%possibles);
8234: }
8235: my $noblock;
8236: foreach my $symb (@symbs) {
8237: last if ($noblock);
8238: my ($map,$resid,$resurl)=&decode_symb($symb);
8239: foreach my $block (keys(%cachedblockers)) {
8240: if ($block =~ /^firstaccess____(.+)$/) {
8241: my $item = $1;
8242: if (($item eq $map) || ($item eq $symb)) {
8243: $noblock = 1;
8244: last;
8245: }
8246: }
8247: if (ref($cachedblockers{$block}) eq 'HASH') {
8248: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8249: if ($cachedblockers{$block}{'resources'}{$symb}) {
8250: unless (grep(/^\Q$block\E$/,@blockers)) {
8251: push(@blockers,$block);
8252: }
8253: }
8254: }
8255: }
8256: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8257: if ($cachedblockers{$block}{'maps'}{$map}) {
8258: unless (grep(/^\Q$block\E$/,@blockers)) {
8259: push(@blockers,$block);
8260: }
8261: }
8262: }
8263: }
8264: }
8265: return if ($noblock);
8266: return @blockers;
8267: }
8268: }
8269:
8270: # -------------------------------- Deversion and split uri into path an filename
8271:
8272: #
8273: # Removes the version from a URI and
8274: # splits it in to its filename and path to the filename.
8275: # Seems like File::Basename could have done this more clearly.
8276: # Parameters:
8277: # $uri - input URI
8278: # Returns:
8279: # Two element list consisting of
8280: # $pathname - the URI up to and excluding the trailing /
8281: # $filename - The part of the URI following the last /
8282: # NOTE:
8283: # Another realization of this is simply:
8284: # use File::Basename;
8285: # ...
8286: # $uri = shift;
8287: # $filename = basename($uri);
8288: # $path = dirname($uri);
8289: # return ($filename, $path);
8290: #
8291: # The implementation below is probably faster however.
8292: #
8293: sub split_uri_for_cond {
8294: my $uri=&deversion(&declutter(shift));
8295: my @uriparts=split(/\//,$uri);
8296: my $filename=pop(@uriparts);
8297: my $pathname=join('/',@uriparts);
8298: return ($pathname,$filename);
8299: }
8300: # --------------------------------------------------- Is a resource on the map?
8301:
8302: sub is_on_map {
8303: my ($pathname,$filename) = &split_uri_for_cond(shift);
8304: #Trying to find the conditional for the file
8305: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8306: /\&\Q$filename\E\:([\d\|]+)\&/);
8307: if ($match) {
8308: return (1,$1);
8309: } else {
8310: return (0,0);
8311: }
8312: }
8313:
8314: # --------------------------------------------------------- Get symb from alias
8315:
8316: sub get_symb_from_alias {
8317: my $symb=shift;
8318: my ($map,$resid,$url)=&decode_symb($symb);
8319: # Already is a symb
8320: if ($url) { return $symb; }
8321: # Must be an alias
8322: my $aliassymb='';
8323: my %bighash;
8324: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8325: &GDBM_READER(),0640)) {
8326: my $rid=$bighash{'mapalias_'.$symb};
8327: if ($rid) {
8328: my ($mapid,$resid)=split(/\./,$rid);
8329: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8330: $resid,$bighash{'src_'.$rid});
8331: }
8332: untie %bighash;
8333: }
8334: return $aliassymb;
8335: }
8336:
8337: # ----------------------------------------------------------------- Define Role
8338:
8339: sub definerole {
8340: if (allowed('mcr','/')) {
8341: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8342: foreach my $role (split(':',$sysrole)) {
8343: my ($crole,$cqual)=split(/\&/,$role);
8344: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8345: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8346: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8347: return "refused:s:$crole&$cqual";
8348: }
8349: }
8350: }
8351: foreach my $role (split(':',$domrole)) {
8352: my ($crole,$cqual)=split(/\&/,$role);
8353: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8354: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8355: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8356: return "refused:d:$crole&$cqual";
8357: }
8358: }
8359: }
8360: foreach my $role (split(':',$courole)) {
8361: my ($crole,$cqual)=split(/\&/,$role);
8362: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8363: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8364: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8365: return "refused:c:$crole&$cqual";
8366: }
8367: }
8368: }
8369: my $uhome;
8370: if (($uname ne '') && ($udom ne '')) {
8371: $uhome = &homeserver($uname,$udom);
8372: return $uhome if ($uhome eq 'no_host');
8373: } else {
8374: $uname = $env{'user.name'};
8375: $udom = $env{'user.domain'};
8376: $uhome = $env{'user.home'};
8377: }
8378: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8379: "$udom:$uname:rolesdef_$rolename=".
8380: escape($sysrole.'_'.$domrole.'_'.$courole);
8381: return reply($command,$uhome);
8382: } else {
8383: return 'refused';
8384: }
8385: }
8386:
8387: # ---------------- Make a metadata query against the network of library servers
8388:
8389: sub metadata_query {
8390: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8391: my %rhash;
8392: my %libserv = &all_library();
8393: my @server_list = (defined($server_array) ? @$server_array
8394: : keys(%libserv) );
8395: for my $server (@server_list) {
8396: my $domains = '';
8397: if (ref($domains_hash) eq 'HASH') {
8398: $domains = $domains_hash->{$server};
8399: }
8400: unless ($custom or $customshow) {
8401: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8402: $rhash{$server}=$reply;
8403: }
8404: else {
8405: my $reply=&reply("querysend:".&escape($query).':'.
8406: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8407: $server);
8408: $rhash{$server}=$reply;
8409: }
8410: }
8411: return \%rhash;
8412: }
8413:
8414: # ----------------------------------------- Send log queries and wait for reply
8415:
8416: sub log_query {
8417: my ($uname,$udom,$query,%filters)=@_;
8418: my $uhome=&homeserver($uname,$udom);
8419: if ($uhome eq 'no_host') { return 'error: no_host'; }
8420: my $uhost=&hostname($uhome);
8421: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8422: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8423: $uhome);
8424: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8425: return get_query_reply($queryid);
8426: }
8427:
8428: # -------------------------- Update MySQL table for portfolio file
8429:
8430: sub update_portfolio_table {
8431: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8432: if ($group ne '') {
8433: $file_name =~s /^\Q$group\E//;
8434: }
8435: my $homeserver = &homeserver($uname,$udom);
8436: my $queryid=
8437: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8438: ':'.&escape($file_name).':'.$action,$homeserver);
8439: my $reply = &get_query_reply($queryid);
8440: return $reply;
8441: }
8442:
8443: # -------------------------- Update MySQL allusers table
8444:
8445: sub update_allusers_table {
8446: my ($uname,$udom,$names) = @_;
8447: my $homeserver = &homeserver($uname,$udom);
8448: my $queryid=
8449: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8450: 'lastname='.&escape($names->{'lastname'}).'%%'.
8451: 'firstname='.&escape($names->{'firstname'}).'%%'.
8452: 'middlename='.&escape($names->{'middlename'}).'%%'.
8453: 'generation='.&escape($names->{'generation'}).'%%'.
8454: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8455: 'id='.&escape($names->{'id'}),$homeserver);
8456: return;
8457: }
8458:
8459: # ------- Request retrieval of institutional classlists for course(s)
8460:
8461: sub fetch_enrollment_query {
8462: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8463: my ($homeserver,$sleep,$loopmax);
8464: my $maxtries = 1;
8465: if ($context eq 'automated') {
8466: $homeserver = $perlvar{'lonHostID'};
8467: $sleep = 2;
8468: $loopmax = 100;
8469: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8470: } else {
8471: $homeserver = &homeserver($cnum,$dom);
8472: }
8473: my $host=&hostname($homeserver);
8474: my $cmd = '';
8475: foreach my $affiliate (keys(%{$affiliatesref})) {
8476: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8477: }
8478: $cmd =~ s/%%$//;
8479: $cmd = &escape($cmd);
8480: my $query = 'fetchenrollment';
8481: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8482: unless ($queryid=~/^\Q$host\E\_/) {
8483: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8484: return 'error: '.$queryid;
8485: }
8486: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8487: my $tries = 1;
8488: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8489: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8490: $tries ++;
8491: }
8492: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8493: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8494: } else {
8495: my @responses = split(/:/,$reply);
8496: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8497: foreach my $line (@responses) {
8498: my ($key,$value) = split(/=/,$line,2);
8499: $$replyref{$key} = $value;
8500: }
8501: } else {
8502: my $pathname = LONCAPA::tempdir();
8503: foreach my $line (@responses) {
8504: my ($key,$value) = split(/=/,$line);
8505: $$replyref{$key} = $value;
8506: if ($value > 0) {
8507: foreach my $item (@{$$affiliatesref{$key}}) {
8508: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8509: my $destname = $pathname.'/'.$filename;
8510: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8511: if ($xml_classlist =~ /^error/) {
8512: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8513: } else {
8514: if ( open(FILE,">",$destname) ) {
8515: print FILE &unescape($xml_classlist);
8516: close(FILE);
8517: } else {
8518: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8519: }
8520: }
8521: }
8522: }
8523: }
8524: }
8525: return 'ok';
8526: }
8527: return 'error';
8528: }
8529:
8530: sub get_query_reply {
8531: my ($queryid,$sleep,$loopmax) = @_;;
8532: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8533: $sleep = 0.2;
8534: }
8535: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8536: $loopmax = 100;
8537: }
8538: my $replyfile=LONCAPA::tempdir().$queryid;
8539: my $reply='';
8540: for (1..$loopmax) {
8541: sleep($sleep);
8542: if (-e $replyfile.'.end') {
8543: if (open(my $fh,"<",$replyfile)) {
8544: $reply = join('',<$fh>);
8545: close($fh);
8546: } else { return 'error: reply_file_error'; }
8547: return &unescape($reply);
8548: }
8549: }
8550: return 'timeout:'.$queryid;
8551: }
8552:
8553: sub courselog_query {
8554: #
8555: # possible filters:
8556: # url: url or symb
8557: # username
8558: # domain
8559: # action: view, submit, grade
8560: # start: timestamp
8561: # end: timestamp
8562: #
8563: my (%filters)=@_;
8564: unless ($env{'request.course.id'}) { return 'no_course'; }
8565: if ($filters{'url'}) {
8566: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8567: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8568: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8569: }
8570: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8571: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8572: return &log_query($cname,$cdom,'courselog',%filters);
8573: }
8574:
8575: sub userlog_query {
8576: #
8577: # possible filters:
8578: # action: log check role
8579: # start: timestamp
8580: # end: timestamp
8581: #
8582: my ($uname,$udom,%filters)=@_;
8583: return &log_query($uname,$udom,'userlog',%filters);
8584: }
8585:
8586: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8587:
8588: sub auto_run {
8589: my ($cnum,$cdom) = @_;
8590: my $response = 0;
8591: my $settings;
8592: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8593: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8594: $settings = $domconfig{'autoenroll'};
8595: if ($settings->{'run'} eq '1') {
8596: $response = 1;
8597: }
8598: } else {
8599: my $homeserver;
8600: if (&is_course($cdom,$cnum)) {
8601: $homeserver = &homeserver($cnum,$cdom);
8602: } else {
8603: $homeserver = &domain($cdom,'primary');
8604: }
8605: if ($homeserver ne 'no_host') {
8606: $response = &reply('autorun:'.$cdom,$homeserver);
8607: }
8608: }
8609: return $response;
8610: }
8611:
8612: sub auto_get_sections {
8613: my ($cnum,$cdom,$inst_coursecode) = @_;
8614: my $homeserver;
8615: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8616: $homeserver = &homeserver($cnum,$cdom);
8617: }
8618: if (!defined($homeserver)) {
8619: if ($cdom =~ /^$match_domain$/) {
8620: $homeserver = &domain($cdom,'primary');
8621: }
8622: }
8623: my @secs;
8624: if (defined($homeserver)) {
8625: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8626: unless ($response eq 'refused') {
8627: @secs = split(/:/,$response);
8628: }
8629: }
8630: return @secs;
8631: }
8632:
8633: sub auto_new_course {
8634: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8635: my $homeserver = &homeserver($cnum,$cdom);
8636: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8637: return $response;
8638: }
8639:
8640: sub auto_validate_courseID {
8641: my ($cnum,$cdom,$inst_course_id) = @_;
8642: my $homeserver = &homeserver($cnum,$cdom);
8643: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8644: return $response;
8645: }
8646:
8647: sub auto_validate_instcode {
8648: my ($cnum,$cdom,$instcode,$owner) = @_;
8649: my ($homeserver,$response);
8650: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8651: $homeserver = &homeserver($cnum,$cdom);
8652: }
8653: if (!defined($homeserver)) {
8654: if ($cdom =~ /^$match_domain$/) {
8655: $homeserver = &domain($cdom,'primary');
8656: }
8657: }
8658: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8659: &escape($instcode).':'.&escape($owner),$homeserver));
8660: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8661: return ($outcome,$description,$defaultcredits);
8662: }
8663:
8664: sub auto_create_password {
8665: my ($cnum,$cdom,$authparam,$udom) = @_;
8666: my ($homeserver,$response);
8667: my $create_passwd = 0;
8668: my $authchk = '';
8669: if ($udom =~ /^$match_domain$/) {
8670: $homeserver = &domain($udom,'primary');
8671: }
8672: if ($homeserver eq '') {
8673: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8674: $homeserver = &homeserver($cnum,$cdom);
8675: }
8676: }
8677: if ($homeserver eq '') {
8678: $authchk = 'nodomain';
8679: } else {
8680: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8681: if ($response eq 'refused') {
8682: $authchk = 'refused';
8683: } else {
8684: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8685: }
8686: }
8687: return ($authparam,$create_passwd,$authchk);
8688: }
8689:
8690: sub auto_photo_permission {
8691: my ($cnum,$cdom,$students) = @_;
8692: my $homeserver = &homeserver($cnum,$cdom);
8693: my ($outcome,$perm_reqd,$conditions) =
8694: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8695: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8696: return (undef,undef);
8697: }
8698: return ($outcome,$perm_reqd,$conditions);
8699: }
8700:
8701: sub auto_checkphotos {
8702: my ($uname,$udom,$pid) = @_;
8703: my $homeserver = &homeserver($uname,$udom);
8704: my ($result,$resulttype);
8705: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8706: &escape($uname).':'.&escape($pid),
8707: $homeserver));
8708: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8709: return (undef,undef);
8710: }
8711: if ($outcome) {
8712: ($result,$resulttype) = split(/:/,$outcome);
8713: }
8714: return ($result,$resulttype);
8715: }
8716:
8717: sub auto_photochoice {
8718: my ($cnum,$cdom) = @_;
8719: my $homeserver = &homeserver($cnum,$cdom);
8720: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8721: &escape($cdom),
8722: $homeserver)));
8723: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8724: return (undef,undef);
8725: }
8726: return ($update,$comment);
8727: }
8728:
8729: sub auto_photoupdate {
8730: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8731: my $homeserver = &homeserver($cnum,$dom);
8732: my $host=&hostname($homeserver);
8733: my $cmd = '';
8734: my $maxtries = 1;
8735: foreach my $affiliate (keys(%{$affiliatesref})) {
8736: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8737: }
8738: $cmd =~ s/%%$//;
8739: $cmd = &escape($cmd);
8740: my $query = 'institutionalphotos';
8741: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8742: unless ($queryid=~/^\Q$host\E\_/) {
8743: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8744: return 'error: '.$queryid;
8745: }
8746: my $reply = &get_query_reply($queryid);
8747: my $tries = 1;
8748: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8749: $reply = &get_query_reply($queryid);
8750: $tries ++;
8751: }
8752: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8753: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8754: } else {
8755: my @responses = split(/:/,$reply);
8756: my $outcome = shift(@responses);
8757: foreach my $item (@responses) {
8758: my ($key,$value) = split(/=/,$item);
8759: $$photo{$key} = $value;
8760: }
8761: return $outcome;
8762: }
8763: return 'error';
8764: }
8765:
8766: sub auto_instcode_format {
8767: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8768: $cat_order) = @_;
8769: my $courses = '';
8770: my @homeservers;
8771: if ($caller eq 'global') {
8772: my %servers = &get_servers($codedom,'library');
8773: foreach my $tryserver (keys(%servers)) {
8774: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8775: push(@homeservers,$tryserver);
8776: }
8777: }
8778: } elsif ($caller eq 'requests') {
8779: if ($codedom =~ /^$match_domain$/) {
8780: my $chome = &domain($codedom,'primary');
8781: unless ($chome eq 'no_host') {
8782: push(@homeservers,$chome);
8783: }
8784: }
8785: } else {
8786: push(@homeservers,&homeserver($caller,$codedom));
8787: }
8788: foreach my $code (keys(%{$instcodes})) {
8789: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8790: }
8791: chop($courses);
8792: my $ok_response = 0;
8793: my $response;
8794: while (@homeservers > 0 && $ok_response == 0) {
8795: my $server = shift(@homeservers);
8796: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8797: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8798: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8799: split(/:/,$response);
8800: %{$codes} = (%{$codes},&str2hash($codes_str));
8801: push(@{$codetitles},&str2array($codetitles_str));
8802: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8803: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8804: $ok_response = 1;
8805: }
8806: }
8807: if ($ok_response) {
8808: return 'ok';
8809: } else {
8810: return $response;
8811: }
8812: }
8813:
8814: sub auto_instcode_defaults {
8815: my ($domain,$returnhash,$code_order) = @_;
8816: my @homeservers;
8817:
8818: my %servers = &get_servers($domain,'library');
8819: foreach my $tryserver (keys(%servers)) {
8820: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8821: push(@homeservers,$tryserver);
8822: }
8823: }
8824:
8825: my $response;
8826: foreach my $server (@homeservers) {
8827: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8828: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8829:
8830: foreach my $pair (split(/\&/,$response)) {
8831: my ($name,$value)=split(/\=/,$pair);
8832: if ($name eq 'code_order') {
8833: @{$code_order} = split(/\&/,&unescape($value));
8834: } else {
8835: $returnhash->{&unescape($name)}=&unescape($value);
8836: }
8837: }
8838: return 'ok';
8839: }
8840:
8841: return $response;
8842: }
8843:
8844: sub auto_possible_instcodes {
8845: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8846: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8847: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8848: return;
8849: }
8850: my (@homeservers,$uhome);
8851: if (defined(&domain($domain,'primary'))) {
8852: $uhome=&domain($domain,'primary');
8853: push(@homeservers,&domain($domain,'primary'));
8854: } else {
8855: my %servers = &get_servers($domain,'library');
8856: foreach my $tryserver (keys(%servers)) {
8857: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8858: push(@homeservers,$tryserver);
8859: }
8860: }
8861: }
8862: my $response;
8863: foreach my $server (@homeservers) {
8864: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8865: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8866: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8867: split(':',$response);
8868: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8869: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8870: foreach my $item (split('&',$cat_title)) {
8871: my ($name,$value)=split('=',$item);
8872: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8873: }
8874: foreach my $item (split('&',$cat_order)) {
8875: my ($name,$value)=split('=',$item);
8876: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8877: }
8878: return 'ok';
8879: }
8880: return $response;
8881: }
8882:
8883: sub auto_courserequest_checks {
8884: my ($dom) = @_;
8885: my ($homeserver,%validations);
8886: if ($dom =~ /^$match_domain$/) {
8887: $homeserver = &domain($dom,'primary');
8888: }
8889: unless ($homeserver eq 'no_host') {
8890: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8891: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8892: my @items = split(/&/,$response);
8893: foreach my $item (@items) {
8894: my ($key,$value) = split('=',$item);
8895: $validations{&unescape($key)} = &thaw_unescape($value);
8896: }
8897: }
8898: }
8899: return %validations;
8900: }
8901:
8902: sub auto_courserequest_validation {
8903: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8904: my ($homeserver,$response);
8905: if ($dom =~ /^$match_domain$/) {
8906: $homeserver = &domain($dom,'primary');
8907: }
8908: unless ($homeserver eq 'no_host') {
8909: my $customdata;
8910: if (ref($custominfo) eq 'HASH') {
8911: $customdata = &freeze_escape($custominfo);
8912: }
8913: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8914: ':'.&escape($crstype).':'.&escape($inststatuslist).
8915: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8916: $customdata,$homeserver));
8917: }
8918: return $response;
8919: }
8920:
8921: sub auto_validate_class_sec {
8922: my ($cdom,$cnum,$owners,$inst_class) = @_;
8923: my $homeserver = &homeserver($cnum,$cdom);
8924: my $ownerlist;
8925: if (ref($owners) eq 'ARRAY') {
8926: $ownerlist = join(',',@{$owners});
8927: } else {
8928: $ownerlist = $owners;
8929: }
8930: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8931: &escape($ownerlist).':'.$cdom,$homeserver);
8932: return $response;
8933: }
8934:
8935: sub auto_validate_instclasses {
8936: my ($cdom,$cnum,$owners,$classesref) = @_;
8937: my ($homeserver,%validations);
8938: $homeserver = &homeserver($cnum,$cdom);
8939: unless ($homeserver eq 'no_host') {
8940: my $ownerlist;
8941: if (ref($owners) eq 'ARRAY') {
8942: $ownerlist = join(',',@{$owners});
8943: } else {
8944: $ownerlist = $owners;
8945: }
8946: if (ref($classesref) eq 'HASH') {
8947: my $classes = &freeze_escape($classesref);
8948: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
8949: ':'.$cdom.':'.$classes,$homeserver);
8950: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8951: my @items = split(/&/,$response);
8952: foreach my $item (@items) {
8953: my ($key,$value) = split('=',$item);
8954: $validations{&unescape($key)} = &thaw_unescape($value);
8955: }
8956: }
8957: }
8958: }
8959: return %validations;
8960: }
8961:
8962: sub auto_crsreq_update {
8963: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8964: $code,$accessstart,$accessend,$inbound) = @_;
8965: my ($homeserver,%crsreqresponse);
8966: if ($cdom =~ /^$match_domain$/) {
8967: $homeserver = &domain($cdom,'primary');
8968: }
8969: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8970: my $info;
8971: if (ref($inbound) eq 'HASH') {
8972: $info = &freeze_escape($inbound);
8973: }
8974: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8975: ':'.&escape($action).':'.&escape($ownername).':'.
8976: &escape($ownerdomain).':'.&escape($fullname).':'.
8977: &escape($title).':'.&escape($code).':'.
8978: &escape($accessstart).':'.&escape($accessend).':'.$info,
8979: $homeserver);
8980: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8981: my @items = split(/&/,$response);
8982: foreach my $item (@items) {
8983: my ($key,$value) = split('=',$item);
8984: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8985: }
8986: }
8987: }
8988: return \%crsreqresponse;
8989: }
8990:
8991: sub auto_export_grades {
8992: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8993: my ($homeserver,%exportresponse);
8994: if ($cdom =~ /^$match_domain$/) {
8995: $homeserver = &domain($cdom,'primary');
8996: }
8997: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8998: my $info;
8999: if (ref($inforef) eq 'HASH') {
9000: $info = &freeze_escape($inforef);
9001: }
9002: if (ref($gradesref) eq 'HASH') {
9003: my $grades = &freeze_escape($gradesref);
9004: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9005: $info.':'.$grades,$homeserver);
9006: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9007: my @items = split(/&/,$response);
9008: foreach my $item (@items) {
9009: my ($key,$value) = split('=',$item);
9010: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9011: }
9012: }
9013: }
9014: }
9015: return \%exportresponse;
9016: }
9017:
9018: sub check_instcode_cloning {
9019: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9020: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9021: return;
9022: }
9023: my $canclone;
9024: if (@{$code_order} > 0) {
9025: my $instcoderegexp ='^';
9026: my @clonecodes = split(/\&/,$cloner);
9027: foreach my $item (@{$code_order}) {
9028: if (grep(/^\Q$item\E=/,@clonecodes)) {
9029: foreach my $pair (@clonecodes) {
9030: my ($key,$val) = split(/\=/,$pair,2);
9031: $val = &unescape($val);
9032: if ($key eq $item) {
9033: $instcoderegexp .= '('.$val.')';
9034: last;
9035: }
9036: }
9037: } else {
9038: $instcoderegexp .= $codedefaults->{$item};
9039: }
9040: }
9041: $instcoderegexp .= '$';
9042: my (@from,@to);
9043: eval {
9044: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9045: (@to) = ($clonetocode =~ /$instcoderegexp/);
9046: };
9047: if ((@from > 0) && (@to > 0)) {
9048: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9049: if (!@diffs) {
9050: $canclone = 1;
9051: }
9052: }
9053: }
9054: return $canclone;
9055: }
9056:
9057: sub default_instcode_cloning {
9058: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9059: my (%codedefaults,@code_order,$canclone);
9060: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9061: %codedefaults = %{$codedefaultsref};
9062: @code_order = @{$codeorderref};
9063: } elsif ($clonedom) {
9064: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9065: }
9066: if (($domdefclone) && (@code_order)) {
9067: my @clonecodes = split(/\+/,$domdefclone);
9068: my $instcoderegexp ='^';
9069: foreach my $item (@code_order) {
9070: if (grep(/^\Q$item\E$/,@clonecodes)) {
9071: $instcoderegexp .= '('.$codedefaults{$item}.')';
9072: } else {
9073: $instcoderegexp .= $codedefaults{$item};
9074: }
9075: }
9076: $instcoderegexp .= '$';
9077: my (@from,@to);
9078: eval {
9079: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9080: (@to) = ($clonetocode =~ /$instcoderegexp/);
9081: };
9082: if ((@from > 0) && (@to > 0)) {
9083: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9084: if (!@diffs) {
9085: $canclone = 1;
9086: }
9087: }
9088: }
9089: return $canclone;
9090: }
9091:
9092: # ------------------------------------------------------- Course Group routines
9093:
9094: sub get_coursegroups {
9095: my ($cdom,$cnum,$group,$namespace) = @_;
9096: return(&dump($namespace,$cdom,$cnum,$group));
9097: }
9098:
9099: sub modify_coursegroup {
9100: my ($cdom,$cnum,$groupsettings) = @_;
9101: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9102: }
9103:
9104: sub toggle_coursegroup_status {
9105: my ($cdom,$cnum,$group,$action) = @_;
9106: my ($from_namespace,$to_namespace);
9107: if ($action eq 'delete') {
9108: $from_namespace = 'coursegroups';
9109: $to_namespace = 'deleted_groups';
9110: } else {
9111: $from_namespace = 'deleted_groups';
9112: $to_namespace = 'coursegroups';
9113: }
9114: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9115: if (my $tmp = &error(%curr_group)) {
9116: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9117: return ('read error',$tmp);
9118: } else {
9119: my %savedsettings = %curr_group;
9120: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9121: my $deloutcome;
9122: if ($result eq 'ok') {
9123: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9124: } else {
9125: return ('write error',$result);
9126: }
9127: if ($deloutcome eq 'ok') {
9128: return 'ok';
9129: } else {
9130: return ('delete error',$deloutcome);
9131: }
9132: }
9133: }
9134:
9135: sub modify_group_roles {
9136: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9137: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9138: my $role = 'gr/'.&escape($userprivs);
9139: my ($uname,$udom) = split(/:/,$user);
9140: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9141: if ($result eq 'ok') {
9142: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9143: }
9144: return $result;
9145: }
9146:
9147: sub modify_coursegroup_membership {
9148: my ($cdom,$cnum,$membership) = @_;
9149: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9150: return $result;
9151: }
9152:
9153: sub get_active_groups {
9154: my ($udom,$uname,$cdom,$cnum) = @_;
9155: my $now = time;
9156: my %groups = ();
9157: foreach my $key (keys(%env)) {
9158: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9159: my ($start,$end) = split(/\./,$env{$key});
9160: if (($end!=0) && ($end<$now)) { next; }
9161: if (($start!=0) && ($start>$now)) { next; }
9162: if ($1 eq $cdom && $2 eq $cnum) {
9163: $groups{$3} = $env{$key} ;
9164: }
9165: }
9166: }
9167: return %groups;
9168: }
9169:
9170: sub get_group_membership {
9171: my ($cdom,$cnum,$group) = @_;
9172: return(&dump('groupmembership',$cdom,$cnum,$group));
9173: }
9174:
9175: sub get_users_groups {
9176: my ($udom,$uname,$courseid) = @_;
9177: my @usersgroups;
9178: my $cachetime=1800;
9179:
9180: my $hashid="$udom:$uname:$courseid";
9181: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9182: if (defined($cached)) {
9183: @usersgroups = split(/:/,$grouplist);
9184: } else {
9185: $grouplist = '';
9186: my $courseurl = &courseid_to_courseurl($courseid);
9187: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9188: my $access_end = $env{'course.'.$courseid.
9189: '.default_enrollment_end_date'};
9190: my $now = time;
9191: foreach my $key (keys(%roleshash)) {
9192: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9193: my $group = $1;
9194: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9195: my $start = $2;
9196: my $end = $1;
9197: if ($start == -1) { next; } # deleted from group
9198: if (($start!=0) && ($start>$now)) { next; }
9199: if (($end!=0) && ($end<$now)) {
9200: if ($access_end && $access_end < $now) {
9201: if ($access_end - $end < 86400) {
9202: push(@usersgroups,$group);
9203: }
9204: }
9205: next;
9206: }
9207: push(@usersgroups,$group);
9208: }
9209: }
9210: }
9211: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9212: $grouplist = join(':',@usersgroups);
9213: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9214: }
9215: return @usersgroups;
9216: }
9217:
9218: sub devalidate_getgroups_cache {
9219: my ($udom,$uname,$cdom,$cnum)=@_;
9220: my $courseid = $cdom.'_'.$cnum;
9221:
9222: my $hashid="$udom:$uname:$courseid";
9223: &devalidate_cache_new('getgroups',$hashid);
9224: }
9225:
9226: # ------------------------------------------------------------------ Plain Text
9227:
9228: sub plaintext {
9229: my ($short,$type,$cid,$forcedefault) = @_;
9230: if ($short =~ m{^cr/}) {
9231: return (split('/',$short))[-1];
9232: }
9233: if (!defined($cid)) {
9234: $cid = $env{'request.course.id'};
9235: }
9236: my %rolenames = (
9237: Course => 'std',
9238: Community => 'alt1',
9239: Placement => 'std',
9240: );
9241: if ($cid ne '') {
9242: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9243: unless ($forcedefault) {
9244: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9245: &Apache::lonlocal::mt_escape(\$roletext);
9246: return &Apache::lonlocal::mt($roletext);
9247: }
9248: }
9249: }
9250: if ((defined($type)) && (defined($rolenames{$type})) &&
9251: (defined($rolenames{$type})) &&
9252: (defined($prp{$short}{$rolenames{$type}}))) {
9253: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9254: } elsif ($cid ne '') {
9255: my $crstype = $env{'course.'.$cid.'.type'};
9256: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9257: (defined($prp{$short}{$rolenames{$crstype}}))) {
9258: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9259: }
9260: }
9261: return &Apache::lonlocal::mt($prp{$short}{'std'});
9262: }
9263:
9264: # ----------------------------------------------------------------- Assign Role
9265:
9266: sub assignrole {
9267: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9268: $context)=@_;
9269: my $mrole;
9270: if ($role =~ /^cr\//) {
9271: my $cwosec=$url;
9272: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9273: unless (&allowed('ccr',$cwosec)) {
9274: my $refused = 1;
9275: if ($context eq 'requestcourses') {
9276: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9277: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9278: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9279: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9280: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9281: if ($crsenv{'internal.courseowner'} eq
9282: $env{'user.name'}.':'.$env{'user.domain'}) {
9283: $refused = '';
9284: }
9285: }
9286: }
9287: }
9288: }
9289: if ($refused) {
9290: &logthis('Refused custom assignrole: '.
9291: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9292: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9293: return 'refused';
9294: }
9295: }
9296: $mrole='cr';
9297: } elsif ($role =~ /^gr\//) {
9298: my $cwogrp=$url;
9299: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9300: unless (&allowed('mdg',$cwogrp)) {
9301: &logthis('Refused group assignrole: '.
9302: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9303: $env{'user.name'}.' at '.$env{'user.domain'});
9304: return 'refused';
9305: }
9306: $mrole='gr';
9307: } else {
9308: my $cwosec=$url;
9309: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9310: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9311: my $refused;
9312: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9313: if (!(&allowed('c'.$role,$url))) {
9314: $refused = 1;
9315: }
9316: } else {
9317: $refused = 1;
9318: }
9319: if ($refused) {
9320: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9321: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9322: my %crsenv;
9323: if ($role eq 'cc' || $role eq 'co') {
9324: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9325: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9326: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9327: if ($crsenv{'internal.courseowner'} eq
9328: $env{'user.name'}.':'.$env{'user.domain'}) {
9329: $refused = '';
9330: }
9331: }
9332: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9333: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9334: if ($crsenv{'internal.courseowner'} eq
9335: $env{'user.name'}.':'.$env{'user.domain'}) {
9336: $refused = '';
9337: }
9338: }
9339: }
9340: }
9341: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9342: if ($role eq 'st') {
9343: $refused = '';
9344: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9345: $refused = '';
9346: }
9347: } elsif ($context eq 'requestcourses') {
9348: my @possroles = ('st','ta','ep','in','cc','co');
9349: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9350: my $wrongcc;
9351: if ($cnum =~ /^$match_community$/) {
9352: $wrongcc = 1 if ($role eq 'cc');
9353: } else {
9354: $wrongcc = 1 if ($role eq 'co');
9355: }
9356: unless ($wrongcc) {
9357: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9358: if ($crsenv{'internal.courseowner'} eq
9359: $env{'user.name'}.':'.$env{'user.domain'}) {
9360: $refused = '';
9361: }
9362: }
9363: }
9364: } elsif ($context eq 'requestauthor') {
9365: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9366: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9367: if ($env{'environment.requestauthor'} eq 'automatic') {
9368: $refused = '';
9369: } else {
9370: my %domdefaults = &get_domain_defaults($udom);
9371: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9372: my $checkbystatus;
9373: if ($env{'user.adv'}) {
9374: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9375: if ($disposition eq 'automatic') {
9376: $refused = '';
9377: } elsif ($disposition eq '') {
9378: $checkbystatus = 1;
9379: }
9380: } else {
9381: $checkbystatus = 1;
9382: }
9383: if ($checkbystatus) {
9384: if ($env{'environment.inststatus'}) {
9385: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9386: foreach my $type (@inststatuses) {
9387: if (($type ne '') &&
9388: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9389: $refused = '';
9390: }
9391: }
9392: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9393: $refused = '';
9394: }
9395: }
9396: }
9397: }
9398: }
9399: }
9400: if ($refused) {
9401: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9402: ' '.$role.' '.$end.' '.$start.' by '.
9403: $env{'user.name'}.' at '.$env{'user.domain'});
9404: return 'refused';
9405: }
9406: }
9407: } elsif ($role eq 'au') {
9408: if ($url ne '/'.$udom.'/') {
9409: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9410: ' to assign author role for '.$uname.':'.$udom.
9411: ' in domain: '.$url.' refused (wrong domain).');
9412: return 'refused';
9413: }
9414: }
9415: $mrole=$role;
9416: }
9417: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9418: "$udom:$uname:$url".'_'."$mrole=$role";
9419: if ($end) { $command.='_'.$end; }
9420: if ($start) {
9421: if ($end) {
9422: $command.='_'.$start;
9423: } else {
9424: $command.='_0_'.$start;
9425: }
9426: }
9427: my $origstart = $start;
9428: my $origend = $end;
9429: my $delflag;
9430: # actually delete
9431: if ($deleteflag) {
9432: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9433: # modify command to delete the role
9434: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9435: "$udom:$uname:$url".'_'."$mrole";
9436: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9437: # set start and finish to negative values for userrolelog
9438: $start=-1;
9439: $end=-1;
9440: $delflag = 1;
9441: }
9442: }
9443: # send command
9444: my $answer=&reply($command,&homeserver($uname,$udom));
9445: # log new user role if status is ok
9446: if ($answer eq 'ok') {
9447: &userrolelog($role,$uname,$udom,$url,$start,$end);
9448: if (($role eq 'cc') || ($role eq 'in') ||
9449: ($role eq 'ep') || ($role eq 'ad') ||
9450: ($role eq 'ta') || ($role eq 'st') ||
9451: ($role=~/^cr/) || ($role eq 'gr') ||
9452: ($role eq 'co')) {
9453: # for course roles, perform group memberships changes triggered by role change.
9454: unless ($role =~ /^gr/) {
9455: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9456: $origstart,$selfenroll,$context);
9457: }
9458: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9459: $selfenroll,$context);
9460: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9461: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9462: ($role eq 'da')) {
9463: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9464: $context);
9465: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9466: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9467: $context);
9468: }
9469: if ($role eq 'cc') {
9470: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9471: }
9472: }
9473: return $answer;
9474: }
9475:
9476: sub autoupdate_coowners {
9477: my ($url,$end,$start,$uname,$udom) = @_;
9478: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9479: if (($cdom ne '') && ($cnum ne '')) {
9480: my $now = time;
9481: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9482: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9483: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9484: my $instcode = $coursehash{'internal.coursecode'};
9485: if ($instcode ne '') {
9486: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9487: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9488: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9489: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9490: if ($result eq 'valid') {
9491: if ($coursehash{'internal.co-owners'}) {
9492: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9493: push(@newcoowners,$coowner);
9494: }
9495: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9496: push(@newcoowners,$uname.':'.$udom);
9497: }
9498: @newcoowners = sort(@newcoowners);
9499: } else {
9500: push(@newcoowners,$uname.':'.$udom);
9501: }
9502: } else {
9503: if ($coursehash{'internal.co-owners'}) {
9504: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9505: unless ($coowner eq $uname.':'.$udom) {
9506: push(@newcoowners,$coowner);
9507: }
9508: }
9509: unless (@newcoowners > 0) {
9510: $delcoowners = 1;
9511: $coowners = '';
9512: }
9513: }
9514: }
9515: if (@newcoowners || $delcoowners) {
9516: &store_coowners($cdom,$cnum,$coursehash{'home'},
9517: $delcoowners,@newcoowners);
9518: }
9519: }
9520: }
9521: }
9522: }
9523: }
9524: }
9525:
9526: sub store_coowners {
9527: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9528: my $cid = $cdom.'_'.$cnum;
9529: my ($coowners,$delresult,$putresult);
9530: if (@newcoowners) {
9531: $coowners = join(',',@newcoowners);
9532: my %coownershash = (
9533: 'internal.co-owners' => $coowners,
9534: );
9535: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9536: if ($putresult eq 'ok') {
9537: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9538: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9539: }
9540: }
9541: }
9542: if ($delcoowners) {
9543: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9544: if ($delresult eq 'ok') {
9545: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9546: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9547: }
9548: }
9549: }
9550: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9551: my %crsinfo =
9552: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9553: if (ref($crsinfo{$cid}) eq 'HASH') {
9554: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9555: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9556: }
9557: }
9558: }
9559:
9560: # -------------------------------------------------- Modify user authentication
9561: # Overrides without validation
9562:
9563: sub modifyuserauth {
9564: my ($udom,$uname,$umode,$upass)=@_;
9565: my $uhome=&homeserver($uname,$udom);
9566: unless (&allowed('mau',$udom)) { return 'refused'; }
9567: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9568: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9569: ' in domain '.$env{'request.role.domain'});
9570: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9571: &escape($upass),$uhome);
9572: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9573: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9574: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9575: &log($udom,,$uname,$uhome,
9576: 'Authentication changed by '.$env{'user.domain'}.', '.
9577: $env{'user.name'}.', '.$umode.
9578: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9579: unless ($reply eq 'ok') {
9580: &logthis('Authentication mode error: '.$reply);
9581: return 'error: '.$reply;
9582: }
9583: return 'ok';
9584: }
9585:
9586: # --------------------------------------------------------------- Modify a user
9587:
9588: sub modifyuser {
9589: my ($udom, $uname, $uid,
9590: $umode, $upass, $first,
9591: $middle, $last, $gene,
9592: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9593: $udom= &LONCAPA::clean_domain($udom);
9594: $uname=&LONCAPA::clean_username($uname);
9595: my $showcandelete = 'none';
9596: if (ref($candelete) eq 'ARRAY') {
9597: if (@{$candelete} > 0) {
9598: $showcandelete = join(', ',@{$candelete});
9599: }
9600: }
9601: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9602: $umode.', '.$first.', '.$middle.', '.
9603: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9604: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9605: ' desiredhome not specified').
9606: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9607: ' in domain '.$env{'request.role.domain'});
9608: my $uhome=&homeserver($uname,$udom,'true');
9609: my $newuser;
9610: if ($uhome eq 'no_host') {
9611: $newuser = 1;
9612: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9613: ($umode eq 'lti')) {
9614: return 'error: more information needed to create new user';
9615: }
9616: }
9617: # ----------------------------------------------------------------- Create User
9618: if (($uhome eq 'no_host') &&
9619: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9620: my $unhome='';
9621: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9622: $unhome = $desiredhome;
9623: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9624: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9625: } else { # load balancing routine for determining $unhome
9626: my $loadm=10000000;
9627: my %servers = &get_servers($udom,'library');
9628: foreach my $tryserver (keys(%servers)) {
9629: my $answer=reply('load',$tryserver);
9630: if (($answer=~/\d+/) && ($answer<$loadm)) {
9631: $loadm=$answer;
9632: $unhome=$tryserver;
9633: }
9634: }
9635: }
9636: if (($unhome eq '') || ($unhome eq 'no_host')) {
9637: return 'error: unable to find a home server for '.$uname.
9638: ' in domain '.$udom;
9639: }
9640: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9641: &escape($upass),$unhome);
9642: unless ($reply eq 'ok') {
9643: return 'error: '.$reply;
9644: }
9645: $uhome=&homeserver($uname,$udom,'true');
9646: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9647: return 'error: unable verify users home machine.';
9648: }
9649: } # End of creation of new user
9650: # ---------------------------------------------------------------------- Add ID
9651: if ($uid) {
9652: $uid=~tr/A-Z/a-z/;
9653: my %uidhash=&idrget($udom,$uname);
9654: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9655: && (!$forceid)) {
9656: unless ($uid eq $uidhash{$uname}) {
9657: return 'error: user id "'.$uid.'" does not match '.
9658: 'current user id "'.$uidhash{$uname}.'".';
9659: }
9660: } else {
9661: &idput($udom,{$uname => $uid},$uhome,'ids');
9662: }
9663: }
9664: # -------------------------------------------------------------- Add names, etc
9665: my @tmp=&get('environment',
9666: ['firstname','middlename','lastname','generation','id',
9667: 'permanentemail','inststatus'],
9668: $udom,$uname);
9669: my (%names,%oldnames);
9670: if ($tmp[0] =~ m/^error:.*/) {
9671: %names=();
9672: } else {
9673: %names = @tmp;
9674: %oldnames = %names;
9675: }
9676: #
9677: # If name, email and/or uid are blank (e.g., because an uploaded file
9678: # of users did not contain them), do not overwrite existing values
9679: # unless field is in $candelete array ref.
9680: #
9681:
9682: my @fields = ('firstname','middlename','lastname','generation',
9683: 'permanentemail','id');
9684: my %newvalues;
9685: if (ref($candelete) eq 'ARRAY') {
9686: foreach my $field (@fields) {
9687: if (grep(/^\Q$field\E$/,@{$candelete})) {
9688: if ($field eq 'firstname') {
9689: $names{$field} = $first;
9690: } elsif ($field eq 'middlename') {
9691: $names{$field} = $middle;
9692: } elsif ($field eq 'lastname') {
9693: $names{$field} = $last;
9694: } elsif ($field eq 'generation') {
9695: $names{$field} = $gene;
9696: } elsif ($field eq 'permanentemail') {
9697: $names{$field} = $email;
9698: } elsif ($field eq 'id') {
9699: $names{$field} = $uid;
9700: }
9701: }
9702: }
9703: }
9704: if ($first) { $names{'firstname'} = $first; }
9705: if (defined($middle)) { $names{'middlename'} = $middle; }
9706: if ($last) { $names{'lastname'} = $last; }
9707: if (defined($gene)) { $names{'generation'} = $gene; }
9708: if ($email) {
9709: $email=~s/[^\w\@\.\-\,]//gs;
9710: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9711: }
9712: if ($uid) { $names{'id'} = $uid; }
9713: if (defined($inststatus)) {
9714: $names{'inststatus'} = '';
9715: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9716: if (ref($usertypes) eq 'HASH') {
9717: my @okstatuses;
9718: foreach my $item (split(/:/,$inststatus)) {
9719: if (defined($usertypes->{$item})) {
9720: push(@okstatuses,$item);
9721: }
9722: }
9723: if (@okstatuses) {
9724: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9725: }
9726: }
9727: }
9728: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9729: $umode.', '.$first.', '.$middle.', '.
9730: $last.', '.$gene.', '.$email.', '.$inststatus;
9731: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9732: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9733: } else {
9734: $logmsg .= ' during self creation';
9735: }
9736: my $changed;
9737: if ($newuser) {
9738: $changed = 1;
9739: } else {
9740: foreach my $field (@fields) {
9741: if ($names{$field} ne $oldnames{$field}) {
9742: $changed = 1;
9743: last;
9744: }
9745: }
9746: }
9747: unless ($changed) {
9748: $logmsg = 'No changes in user information needed for: '.$logmsg;
9749: &logthis($logmsg);
9750: return 'ok';
9751: }
9752: my $reply = &put('environment', \%names, $udom,$uname);
9753: if ($reply ne 'ok') {
9754: return 'error: '.$reply;
9755: }
9756: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9757: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9758: }
9759: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9760: &devalidate_cache_new('namescache',$uname.':'.$udom);
9761: $logmsg = 'Success modifying user '.$logmsg;
9762: &logthis($logmsg);
9763: return 'ok';
9764: }
9765:
9766: # -------------------------------------------------------------- Modify student
9767:
9768: sub modifystudent {
9769: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9770: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9771: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9772: if (!$cid) {
9773: unless ($cid=$env{'request.course.id'}) {
9774: return 'not_in_class';
9775: }
9776: }
9777: # --------------------------------------------------------------- Make the user
9778: my $reply=&modifyuser
9779: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9780: $desiredhome,$email,$inststatus);
9781: unless ($reply eq 'ok') { return $reply; }
9782: # This will cause &modify_student_enrollment to get the uid from the
9783: # student's environment
9784: $uid = undef if (!$forceid);
9785: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9786: $gene,$usec,$end,$start,$type,$locktype,
9787: $cid,$selfenroll,$context,$credits,$instsec);
9788: return $reply;
9789: }
9790:
9791: sub modify_student_enrollment {
9792: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9793: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9794: my ($cdom,$cnum,$chome);
9795: if (!$cid) {
9796: unless ($cid=$env{'request.course.id'}) {
9797: return 'not_in_class';
9798: }
9799: $cdom=$env{'course.'.$cid.'.domain'};
9800: $cnum=$env{'course.'.$cid.'.num'};
9801: } else {
9802: ($cdom,$cnum)=split(/_/,$cid);
9803: }
9804: $chome=$env{'course.'.$cid.'.home'};
9805: if (!$chome) {
9806: $chome=&homeserver($cnum,$cdom);
9807: }
9808: if (!$chome) { return 'unknown_course'; }
9809: # Make sure the user exists
9810: my $uhome=&homeserver($uname,$udom);
9811: if (($uhome eq '') || ($uhome eq 'no_host')) {
9812: return 'error: no such user';
9813: }
9814: # Get student data if we were not given enough information
9815: if (!defined($first) || $first eq '' ||
9816: !defined($last) || $last eq '' ||
9817: !defined($uid) || $uid eq '' ||
9818: !defined($middle) || $middle eq '' ||
9819: !defined($gene) || $gene eq '') {
9820: # They did not supply us with enough data to enroll the student, so
9821: # we need to pick up more information.
9822: my %tmp = &get('environment',
9823: ['firstname','middlename','lastname', 'generation','id']
9824: ,$udom,$uname);
9825:
9826: #foreach my $key (keys(%tmp)) {
9827: # &logthis("key $key = ".$tmp{$key});
9828: #}
9829: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9830: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9831: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9832: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9833: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9834: }
9835: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9836: my $user = "$uname:$udom";
9837: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9838: my $reply=cput('classlist',
9839: {$user =>
9840: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9841: $cdom,$cnum);
9842: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9843: &devalidate_getsection_cache($udom,$uname,$cid);
9844: } else {
9845: return 'error: '.$reply;
9846: }
9847: # Add student role to user
9848: my $uurl='/'.$cid;
9849: $uurl=~s/\_/\//g;
9850: if ($usec) {
9851: $uurl.='/'.$usec;
9852: }
9853: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9854: $selfenroll,$context);
9855: if ($result ne 'ok') {
9856: if ($old_entry{$user} ne '') {
9857: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9858: } else {
9859: $reply = &del('classlist',[$user],$cdom,$cnum);
9860: }
9861: }
9862: return $result;
9863: }
9864:
9865: sub format_name {
9866: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9867: my $name;
9868: if ($first ne 'lastname') {
9869: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9870: } else {
9871: if ($lastname=~/\S/) {
9872: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9873: $name=~s/\s+,/,/;
9874: } else {
9875: $name.= $firstname.' '.$middlename.' '.$generation;
9876: }
9877: }
9878: $name=~s/^\s+//;
9879: $name=~s/\s+$//;
9880: $name=~s/\s+/ /g;
9881: return $name;
9882: }
9883:
9884: # ------------------------------------------------- Write to course preferences
9885:
9886: sub writecoursepref {
9887: my ($courseid,%prefs)=@_;
9888: $courseid=~s/^\///;
9889: $courseid=~s/\_/\//g;
9890: my ($cdomain,$cnum)=split(/\//,$courseid);
9891: my $chome=homeserver($cnum,$cdomain);
9892: if (($chome eq '') || ($chome eq 'no_host')) {
9893: return 'error: no such course';
9894: }
9895: my $cstring='';
9896: foreach my $pref (keys(%prefs)) {
9897: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9898: }
9899: $cstring=~s/\&$//;
9900: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9901: }
9902:
9903: # ---------------------------------------------------------- Make/modify course
9904:
9905: sub createcourse {
9906: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9907: $course_owner,$crstype,$cnum,$context,$category)=@_;
9908: $url=&declutter($url);
9909: my $cid='';
9910: if ($context eq 'requestcourses') {
9911: my $can_create = 0;
9912: my ($ownername,$ownerdom) = split(':',$course_owner);
9913: if ($udom eq $ownerdom) {
9914: if (&usertools_access($ownername,$ownerdom,$category,undef,
9915: $context)) {
9916: $can_create = 1;
9917: }
9918: } else {
9919: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9920: $category);
9921: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9922: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9923: if (@curr > 0) {
9924: my @options = qw(approval validate autolimit);
9925: my $optregex = join('|',@options);
9926: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9927: $can_create = 1;
9928: }
9929: }
9930: }
9931: }
9932: if ($can_create) {
9933: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9934: unless (&allowed('ccc',$udom)) {
9935: return 'refused';
9936: }
9937: }
9938: } else {
9939: return 'refused';
9940: }
9941: } elsif (!&allowed('ccc',$udom)) {
9942: return 'refused';
9943: }
9944: # --------------------------------------------------------------- Get Unique ID
9945: my $uname;
9946: if ($cnum =~ /^$match_courseid$/) {
9947: my $chome=&homeserver($cnum,$udom,'true');
9948: if (($chome eq '') || ($chome eq 'no_host')) {
9949: $uname = $cnum;
9950: } else {
9951: $uname = &generate_coursenum($udom,$crstype);
9952: }
9953: } else {
9954: $uname = &generate_coursenum($udom,$crstype);
9955: }
9956: return $uname if ($uname =~ /^error/);
9957: # -------------------------------------------------- Check supplied server name
9958: if (!defined($course_server)) {
9959: if (defined(&domain($udom,'primary'))) {
9960: $course_server = &domain($udom,'primary');
9961: } else {
9962: $course_server = $env{'user.home'};
9963: }
9964: }
9965: my %host_servers =
9966: &Apache::lonnet::get_servers($udom,'library');
9967: unless ($host_servers{$course_server}) {
9968: return 'error: invalid home server for course: '.$course_server;
9969: }
9970: # ------------------------------------------------------------- Make the course
9971: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9972: $course_server);
9973: unless ($reply eq 'ok') { return 'error: '.$reply; }
9974: my $uhome=&homeserver($uname,$udom,'true');
9975: if (($uhome eq '') || ($uhome eq 'no_host')) {
9976: return 'error: no such course';
9977: }
9978: # ----------------------------------------------------------------- Course made
9979: # log existence
9980: my $now = time;
9981: my $newcourse = {
9982: $udom.'_'.$uname => {
9983: description => $description,
9984: inst_code => $inst_code,
9985: owner => $course_owner,
9986: type => $crstype,
9987: creator => $env{'user.name'}.':'.
9988: $env{'user.domain'},
9989: created => $now,
9990: context => $context,
9991: },
9992: };
9993: &courseidput($udom,$newcourse,$uhome,'notime');
9994: # set toplevel url
9995: my $topurl=$url;
9996: unless ($nonstandard) {
9997: # ------------------------------------------ For standard courses, make top url
9998: my $mapurl=&clutter($url);
9999: if ($mapurl eq '/res/') { $mapurl=''; }
10000: $env{'form.initmap'}=(<<ENDINITMAP);
10001: <map>
10002: <resource id="1" type="start"></resource>
10003: <resource id="2" src="$mapurl"></resource>
10004: <resource id="3" type="finish"></resource>
10005: <link index="1" from="1" to="2"></link>
10006: <link index="2" from="2" to="3"></link>
10007: </map>
10008: ENDINITMAP
10009: $topurl=&declutter(
10010: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10011: );
10012: }
10013: # ----------------------------------------------------------- Write preferences
10014: &writecoursepref($udom.'_'.$uname,
10015: ('description' => $description,
10016: 'url' => $topurl,
10017: 'internal.creator' => $env{'user.name'}.':'.
10018: $env{'user.domain'},
10019: 'internal.created' => $now,
10020: 'internal.creationcontext' => $context)
10021: );
10022: return '/'.$udom.'/'.$uname;
10023: }
10024:
10025: # ------------------------------------------------------------------- Create ID
10026: sub generate_coursenum {
10027: my ($udom,$crstype) = @_;
10028: my $domdesc = &domain($udom);
10029: return 'error: invalid domain' if ($domdesc eq '');
10030: my $first;
10031: if ($crstype eq 'Community') {
10032: $first = '0';
10033: } else {
10034: $first = int(1+rand(9));
10035: }
10036: my $uname=$first.
10037: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10038: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10039: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10040: # ----------------------------------------------- Make sure that does not exist
10041: my $uhome=&homeserver($uname,$udom,'true');
10042: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10043: if ($crstype eq 'Community') {
10044: $first = '0';
10045: } else {
10046: $first = int(1+rand(9));
10047: }
10048: $uname=$first.
10049: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10050: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10051: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10052: $uhome=&homeserver($uname,$udom,'true');
10053: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10054: return 'error: unable to generate unique course-ID';
10055: }
10056: }
10057: return $uname;
10058: }
10059:
10060: sub is_course {
10061: my ($cdom, $cnum) = scalar(@_) == 1 ?
10062: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10063:
10064: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10065: my $uhome=&homeserver($cnum,$cdom);
10066: my $iscourse;
10067: if (grep { $_ eq $uhome } current_machine_ids()) {
10068: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10069: } else {
10070: my $hashid = $cdom.':'.$cnum;
10071: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10072: unless (defined($cached)) {
10073: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10074: $cnum,undef,undef,'.');
10075: $iscourse = 0;
10076: if (exists($courses{$cdom.'_'.$cnum})) {
10077: $iscourse = 1;
10078: }
10079: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10080: }
10081: }
10082: return unless ($iscourse);
10083: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10084: }
10085:
10086: sub store_userdata {
10087: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10088: my $result;
10089: if ($datakey ne '') {
10090: if (ref($storehash) eq 'HASH') {
10091: if ($udom eq '' || $uname eq '') {
10092: $udom = $env{'user.domain'};
10093: $uname = $env{'user.name'};
10094: }
10095: my $uhome=&homeserver($uname,$udom);
10096: if (($uhome eq '') || ($uhome eq 'no_host')) {
10097: $result = 'error: no_host';
10098: } else {
10099: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10100: $storehash->{'host'} = $perlvar{'lonHostID'};
10101:
10102: my $namevalue='';
10103: foreach my $key (keys(%{$storehash})) {
10104: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10105: }
10106: $namevalue=~s/\&$//;
10107: unless ($namespace eq 'courserequests') {
10108: $datakey = &escape($datakey);
10109: }
10110: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10111: $namevalue,$uhome);
10112: }
10113: } else {
10114: $result = 'error: data to store was not a hash reference';
10115: }
10116: } else {
10117: $result= 'error: invalid requestkey';
10118: }
10119: return $result;
10120: }
10121:
10122: # ---------------------------------------------------------- Assign Custom Role
10123:
10124: sub assigncustomrole {
10125: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10126: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10127: $end,$start,$deleteflag,$selfenroll,$context);
10128: }
10129:
10130: # ----------------------------------------------------------------- Revoke Role
10131:
10132: sub revokerole {
10133: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10134: my $now=time;
10135: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10136: }
10137:
10138: # ---------------------------------------------------------- Revoke Custom Role
10139:
10140: sub revokecustomrole {
10141: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10142: my $now=time;
10143: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10144: $deleteflag,$selfenroll,$context);
10145: }
10146:
10147: # ------------------------------------------------------------ Disk usage
10148: sub diskusage {
10149: my ($udom,$uname,$directorypath,$getpropath)=@_;
10150: $directorypath =~ s/\/$//;
10151: my $listing=&reply('du2:'.&escape($directorypath).':'
10152: .&escape($getpropath).':'.&escape($uname).':'
10153: .&escape($udom),homeserver($uname,$udom));
10154: if ($listing eq 'unknown_cmd') {
10155: if ($getpropath) {
10156: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10157: }
10158: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10159: }
10160: return $listing;
10161: }
10162:
10163: sub is_locked {
10164: my ($file_name, $domain, $user, $which) = @_;
10165: my @check;
10166: my $is_locked;
10167: push (@check,$file_name);
10168: my %locked = &get('file_permissions',\@check,
10169: $env{'user.domain'},$env{'user.name'});
10170: my ($tmp)=keys(%locked);
10171: if ($tmp=~/^error:/) { undef(%locked); }
10172:
10173: if (ref($locked{$file_name}) eq 'ARRAY') {
10174: $is_locked = 'false';
10175: foreach my $entry (@{$locked{$file_name}}) {
10176: if (ref($entry) eq 'ARRAY') {
10177: $is_locked = 'true';
10178: if (ref($which) eq 'ARRAY') {
10179: push(@{$which},$entry);
10180: } else {
10181: last;
10182: }
10183: }
10184: }
10185: } else {
10186: $is_locked = 'false';
10187: }
10188: return $is_locked;
10189: }
10190:
10191: sub declutter_portfile {
10192: my ($file) = @_;
10193: $file =~ s{^(/portfolio/|portfolio/)}{/};
10194: return $file;
10195: }
10196:
10197: # ------------------------------------------------------------- Mark as Read Only
10198:
10199: sub mark_as_readonly {
10200: my ($domain,$user,$files,$what) = @_;
10201: my %current_permissions = &dump('file_permissions',$domain,$user);
10202: my ($tmp)=keys(%current_permissions);
10203: if ($tmp=~/^error:/) { undef(%current_permissions); }
10204: foreach my $file (@{$files}) {
10205: $file = &declutter_portfile($file);
10206: push(@{$current_permissions{$file}},$what);
10207: }
10208: &put('file_permissions',\%current_permissions,$domain,$user);
10209: return;
10210: }
10211:
10212: # ------------------------------------------------------------Save Selected Files
10213:
10214: sub save_selected_files {
10215: my ($user, $path, @files) = @_;
10216: my $filename = $user."savedfiles";
10217: my @other_files = &files_not_in_path($user, $path);
10218: open (OUT,'>',LONCAPA::tempdir().$filename);
10219: foreach my $file (@files) {
10220: print (OUT $env{'form.currentpath'}.$file."\n");
10221: }
10222: foreach my $file (@other_files) {
10223: print (OUT $file."\n");
10224: }
10225: close (OUT);
10226: return 'ok';
10227: }
10228:
10229: sub clear_selected_files {
10230: my ($user) = @_;
10231: my $filename = $user."savedfiles";
10232: open (OUT,'>',LONCAPA::tempdir().$filename);
10233: print (OUT undef);
10234: close (OUT);
10235: return ("ok");
10236: }
10237:
10238: sub files_in_path {
10239: my ($user, $path) = @_;
10240: my $filename = $user."savedfiles";
10241: my %return_files;
10242: open (IN,'<',LONCAPA::tempdir().$filename);
10243: while (my $line_in = <IN>) {
10244: chomp ($line_in);
10245: my @paths_and_file = split (m!/!, $line_in);
10246: my $file_part = pop (@paths_and_file);
10247: my $path_part = join ('/', @paths_and_file);
10248: $path_part.='/';
10249: my $path_and_file = $path_part.$file_part;
10250: if ($path_part eq $path) {
10251: $return_files{$file_part}= 'selected';
10252: }
10253: }
10254: close (IN);
10255: return (\%return_files);
10256: }
10257:
10258: # called in portfolio select mode, to show files selected NOT in current directory
10259: sub files_not_in_path {
10260: my ($user, $path) = @_;
10261: my $filename = $user."savedfiles";
10262: my @return_files;
10263: my $path_part;
10264: open(IN, '<',LONCAPA::tempdir().$filename);
10265: while (my $line = <IN>) {
10266: #ok, I know it's clunky, but I want it to work
10267: my @paths_and_file = split(m|/|, $line);
10268: my $file_part = pop(@paths_and_file);
10269: chomp($file_part);
10270: my $path_part = join('/', @paths_and_file);
10271: $path_part .= '/';
10272: my $path_and_file = $path_part.$file_part;
10273: if ($path_part ne $path) {
10274: push(@return_files, ($path_and_file));
10275: }
10276: }
10277: close(OUT);
10278: return (@return_files);
10279: }
10280:
10281: #------------------------------Submitted/Handedback Portfolio Files Versioning
10282:
10283: sub portfiles_versioning {
10284: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10285: my $portfolio_root = '/userfiles/portfolio';
10286: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10287: foreach my $file (@{$portfiles}) {
10288: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10289: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10290: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10291: my $getpropath = 1;
10292: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10293: $stu_name,$getpropath);
10294: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10295: my $new_answer =
10296: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10297: if ($new_answer ne 'problem getting file') {
10298: push(@{$versioned_portfiles}, $directory.$new_answer);
10299: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10300: [$symb,$env{'request.course.id'},'graded']);
10301: }
10302: }
10303: }
10304:
10305: sub get_next_version {
10306: my ($answer_name, $answer_ext, $dir_list) = @_;
10307: my $version;
10308: if (ref($dir_list) eq 'ARRAY') {
10309: foreach my $row (@{$dir_list}) {
10310: my ($file) = split(/\&/,$row,2);
10311: my ($file_name,$file_version,$file_ext) =
10312: &file_name_version_ext($file);
10313: if (($file_name eq $answer_name) &&
10314: ($file_ext eq $answer_ext)) {
10315: # gets here if filename and extension match,
10316: # regardless of version
10317: if ($file_version ne '') {
10318: # a versioned file is found so save it for later
10319: if ($file_version > $version) {
10320: $version = $file_version;
10321: }
10322: }
10323: }
10324: }
10325: }
10326: $version ++;
10327: return($version);
10328: }
10329:
10330: sub version_selected_portfile {
10331: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10332: my ($answer_name,$answer_ver,$answer_ext) =
10333: &file_name_version_ext($file_name);
10334: my $new_answer;
10335: $env{'form.copy'} =
10336: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10337: if($env{'form.copy'} eq '-1') {
10338: $new_answer = 'problem getting file';
10339: } else {
10340: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10341: my $copy_result =
10342: &finishuserfileupload($stu_name,$domain,'copy',
10343: '/portfolio'.$directory.$new_answer);
10344: }
10345: undef($env{'form.copy'});
10346: return ($new_answer);
10347: }
10348:
10349: sub file_name_version_ext {
10350: my ($file)=@_;
10351: my @file_parts = split(/\./, $file);
10352: my ($name,$version,$ext);
10353: if (@file_parts > 1) {
10354: $ext=pop(@file_parts);
10355: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10356: $version=pop(@file_parts);
10357: }
10358: $name=join('.',@file_parts);
10359: } else {
10360: $name=join('.',@file_parts);
10361: }
10362: return($name,$version,$ext);
10363: }
10364:
10365: #----------------------------------------------Get portfolio file permissions
10366:
10367: sub get_portfile_permissions {
10368: my ($domain,$user) = @_;
10369: my %current_permissions = &dump('file_permissions',$domain,$user);
10370: my ($tmp)=keys(%current_permissions);
10371: if ($tmp=~/^error:/) { undef(%current_permissions); }
10372: return \%current_permissions;
10373: }
10374:
10375: #---------------------------------------------Get portfolio file access controls
10376:
10377: sub get_access_controls {
10378: my ($current_permissions,$group,$file) = @_;
10379: my %access;
10380: my $real_file = $file;
10381: $file =~ s/\.meta$//;
10382: if (defined($file)) {
10383: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10384: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10385: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10386: }
10387: }
10388: } else {
10389: foreach my $key (keys(%{$current_permissions})) {
10390: if ($key =~ /\0accesscontrol$/) {
10391: if (defined($group)) {
10392: if ($key !~ m-^\Q$group\E/-) {
10393: next;
10394: }
10395: }
10396: my ($fullpath) = split(/\0/,$key);
10397: if (ref($$current_permissions{$key}) eq 'HASH') {
10398: foreach my $control (keys(%{$$current_permissions{$key}})) {
10399: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10400: }
10401: }
10402: }
10403: }
10404: }
10405: return %access;
10406: }
10407:
10408: sub modify_access_controls {
10409: my ($file_name,$changes,$domain,$user)=@_;
10410: my ($outcome,$deloutcome);
10411: my %store_permissions;
10412: my %new_values;
10413: my %new_control;
10414: my %translation;
10415: my @deletions = ();
10416: my $now = time;
10417: if (exists($$changes{'activate'})) {
10418: if (ref($$changes{'activate'}) eq 'HASH') {
10419: my @newitems = sort(keys(%{$$changes{'activate'}}));
10420: my $numnew = scalar(@newitems);
10421: for (my $i=0; $i<$numnew; $i++) {
10422: my $newkey = $newitems[$i];
10423: my $newid = &Apache::loncommon::get_cgi_id();
10424: if ($newkey =~ /^\d+:/) {
10425: $newkey =~ s/^(\d+)/$newid/;
10426: $translation{$1} = $newid;
10427: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10428: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10429: $translation{$1} = $newid;
10430: }
10431: $new_values{$file_name."\0".$newkey} =
10432: $$changes{'activate'}{$newitems[$i]};
10433: $new_control{$newkey} = $now;
10434: }
10435: }
10436: }
10437: my %todelete;
10438: my %changed_items;
10439: foreach my $action ('delete','update') {
10440: if (exists($$changes{$action})) {
10441: if (ref($$changes{$action}) eq 'HASH') {
10442: foreach my $key (keys(%{$$changes{$action}})) {
10443: my ($itemnum) = ($key =~ /^([^:]+):/);
10444: if ($action eq 'delete') {
10445: $todelete{$itemnum} = 1;
10446: } else {
10447: $changed_items{$itemnum} = $key;
10448: }
10449: }
10450: }
10451: }
10452: }
10453: # get lock on access controls for file.
10454: my $lockhash = {
10455: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10456: ':'.$env{'user.domain'},
10457: };
10458: my $tries = 0;
10459: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10460:
10461: while (($gotlock ne 'ok') && $tries < 10) {
10462: $tries ++;
10463: sleep(0.1);
10464: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10465: }
10466: if ($gotlock eq 'ok') {
10467: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10468: my ($tmp)=keys(%curr_permissions);
10469: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10470: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10471: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10472: if (ref($curr_controls) eq 'HASH') {
10473: foreach my $control_item (keys(%{$curr_controls})) {
10474: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10475: if (defined($todelete{$itemnum})) {
10476: push(@deletions,$file_name."\0".$control_item);
10477: } else {
10478: if (defined($changed_items{$itemnum})) {
10479: $new_control{$changed_items{$itemnum}} = $now;
10480: push(@deletions,$file_name."\0".$control_item);
10481: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10482: } else {
10483: $new_control{$control_item} = $$curr_controls{$control_item};
10484: }
10485: }
10486: }
10487: }
10488: }
10489: my ($group);
10490: if (&is_course($domain,$user)) {
10491: ($group,my $file) = split(/\//,$file_name,2);
10492: }
10493: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10494: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10495: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10496: # remove lock
10497: my @del_lock = ($file_name."\0".'locked_access_records');
10498: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10499: my $sqlresult =
10500: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10501: $group);
10502: } else {
10503: $outcome = "error: could not obtain lockfile\n";
10504: }
10505: return ($outcome,$deloutcome,\%new_values,\%translation);
10506: }
10507:
10508: sub make_public_indefinitely {
10509: my (@requrl) = @_;
10510: return &automated_portfile_access('public',\@requrl);
10511: }
10512:
10513: sub automated_portfile_access {
10514: my ($accesstype,$addsref,$delsref,$info) = @_;
10515: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10516: return 'invalid';
10517: }
10518: my %urls;
10519: if (ref($addsref) eq 'ARRAY') {
10520: foreach my $requrl (@{$addsref}) {
10521: if (&is_portfolio_url($requrl)) {
10522: unless (exists($urls{$requrl})) {
10523: $urls{$requrl} = 'add';
10524: }
10525: }
10526: }
10527: }
10528: if (ref($delsref) eq 'ARRAY') {
10529: foreach my $requrl (@{$delsref}) {
10530: if (&is_portfolio_url($requrl)) {
10531: unless (exists($urls{$requrl})) {
10532: $urls{$requrl} = 'delete';
10533: }
10534: }
10535: }
10536: }
10537: unless (keys(%urls)) {
10538: return 'invalid';
10539: }
10540: my $ip;
10541: if ($accesstype eq 'ip') {
10542: if (ref($info) eq 'HASH') {
10543: if ($info->{'ip'} ne '') {
10544: $ip = $info->{'ip'};
10545: }
10546: }
10547: if ($ip eq '') {
10548: return 'invalid';
10549: }
10550: }
10551: my $errors;
10552: my $now = time;
10553: my %current_perms;
10554: foreach my $requrl (sort(keys(%urls))) {
10555: my $action;
10556: if ($urls{$requrl} eq 'add') {
10557: $action = 'activate';
10558: } else {
10559: $action = 'none';
10560: }
10561: my $aclnum = 0;
10562: my (undef,$udom,$unum,$file_name,$group) =
10563: &parse_portfolio_url($requrl);
10564: unless (exists($current_perms{$unum.':'.$udom})) {
10565: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10566: }
10567: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10568: $group,$file_name);
10569: foreach my $key (keys(%{$access_controls{$file_name}})) {
10570: my ($num,$scope,$end,$start) =
10571: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10572: if ($scope eq $accesstype) {
10573: if (($start <= $now) && ($end == 0)) {
10574: if ($accesstype eq 'ip') {
10575: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10576: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10577: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10578: if ($urls{$requrl} eq 'add') {
10579: $action = 'none';
10580: last;
10581: } else {
10582: $action = 'delete';
10583: $aclnum = $num;
10584: last;
10585: }
10586: }
10587: }
10588: }
10589: } elsif ($accesstype eq 'public') {
10590: if ($urls{$requrl} eq 'add') {
10591: $action = 'none';
10592: last;
10593: } else {
10594: $action = 'delete';
10595: $aclnum = $num;
10596: last;
10597: }
10598: }
10599: } elsif ($accesstype eq 'public') {
10600: $action = 'update';
10601: $aclnum = $num;
10602: last;
10603: }
10604: }
10605: }
10606: if ($action eq 'none') {
10607: next;
10608: } else {
10609: my %changes;
10610: my $newend = 0;
10611: my $newstart = $now;
10612: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10613: $changes{$action}{$newkey} = {
10614: type => $accesstype,
10615: time => {
10616: start => $newstart,
10617: end => $newend,
10618: },
10619: };
10620: if ($accesstype eq 'ip') {
10621: $changes{$action}{$newkey}{'ip'} = [$ip];
10622: }
10623: my ($outcome,$deloutcome,$new_values,$translation) =
10624: &modify_access_controls($file_name,\%changes,$udom,$unum);
10625: unless ($outcome eq 'ok') {
10626: $errors .= $outcome.' ';
10627: }
10628: }
10629: }
10630: if ($errors) {
10631: $errors =~ s/\s$//;
10632: return $errors;
10633: } else {
10634: return 'ok';
10635: }
10636: }
10637:
10638: #------------------------------------------------------Get Marked as Read Only
10639:
10640: sub get_marked_as_readonly {
10641: my ($domain,$user,$what,$group) = @_;
10642: my $current_permissions = &get_portfile_permissions($domain,$user);
10643: my @readonly_files;
10644: my $cmp1=$what;
10645: if (ref($what)) { $cmp1=join('',@{$what}) };
10646: while (my ($file_name,$value) = each(%{$current_permissions})) {
10647: if (defined($group)) {
10648: if ($file_name !~ m-^\Q$group\E/-) {
10649: next;
10650: }
10651: }
10652: if (ref($value) eq "ARRAY"){
10653: foreach my $stored_what (@{$value}) {
10654: my $cmp2=$stored_what;
10655: if (ref($stored_what) eq 'ARRAY') {
10656: $cmp2=join('',@{$stored_what});
10657: }
10658: if ($cmp1 eq $cmp2) {
10659: push(@readonly_files, $file_name);
10660: last;
10661: } elsif (!defined($what)) {
10662: push(@readonly_files, $file_name);
10663: last;
10664: }
10665: }
10666: }
10667: }
10668: return @readonly_files;
10669: }
10670: #-----------------------------------------------------------Get Marked as Read Only Hash
10671:
10672: sub get_marked_as_readonly_hash {
10673: my ($current_permissions,$group,$what) = @_;
10674: my %readonly_files;
10675: while (my ($file_name,$value) = each(%{$current_permissions})) {
10676: if (defined($group)) {
10677: if ($file_name !~ m-^\Q$group\E/-) {
10678: next;
10679: }
10680: }
10681: if (ref($value) eq "ARRAY"){
10682: foreach my $stored_what (@{$value}) {
10683: if (ref($stored_what) eq 'ARRAY') {
10684: foreach my $lock_descriptor(@{$stored_what}) {
10685: if ($lock_descriptor eq 'graded') {
10686: $readonly_files{$file_name} = 'graded';
10687: } elsif ($lock_descriptor eq 'handback') {
10688: $readonly_files{$file_name} = 'handback';
10689: } else {
10690: if (!exists($readonly_files{$file_name})) {
10691: $readonly_files{$file_name} = 'locked';
10692: }
10693: }
10694: }
10695: }
10696: }
10697: }
10698: }
10699: return %readonly_files;
10700: }
10701: # ------------------------------------------------------------ Unmark as Read Only
10702:
10703: sub unmark_as_readonly {
10704: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10705: # for portfolio submissions, $what contains [$symb,$crsid]
10706: my ($domain,$user,$what,$file_name,$group) = @_;
10707: $file_name = &declutter_portfile($file_name);
10708: my $symb_crs = $what;
10709: if (ref($what)) { $symb_crs=join('',@$what); }
10710: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10711: my ($tmp)=keys(%current_permissions);
10712: if ($tmp=~/^error:/) { undef(%current_permissions); }
10713: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10714: foreach my $file (@readonly_files) {
10715: my $clean_file = &declutter_portfile($file);
10716: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10717: my $current_locks = $current_permissions{$file};
10718: my @new_locks;
10719: my @del_keys;
10720: if (ref($current_locks) eq "ARRAY"){
10721: foreach my $locker (@{$current_locks}) {
10722: my $compare=$locker;
10723: if (ref($locker) eq 'ARRAY') {
10724: $compare=join('',@{$locker});
10725: if ($compare ne $symb_crs) {
10726: push(@new_locks, $locker);
10727: }
10728: }
10729: }
10730: if (scalar(@new_locks) > 0) {
10731: $current_permissions{$file} = \@new_locks;
10732: } else {
10733: push(@del_keys, $file);
10734: &del('file_permissions',\@del_keys, $domain, $user);
10735: delete($current_permissions{$file});
10736: }
10737: }
10738: }
10739: &put('file_permissions',\%current_permissions,$domain,$user);
10740: return;
10741: }
10742:
10743: # ------------------------------------------------------------ Directory lister
10744:
10745: sub dirlist {
10746: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10747: $uri=~s/^\///;
10748: $uri=~s/\/$//;
10749: my ($udom, $uname);
10750: if ($getuserdir) {
10751: $udom = $userdomain;
10752: $uname = $username;
10753: } else {
10754: (undef,$udom,$uname)=split(/\//,$uri);
10755: if(defined($userdomain)) {
10756: $udom = $userdomain;
10757: }
10758: if(defined($username)) {
10759: $uname = $username;
10760: }
10761: }
10762: my ($dirRoot,$listing,@listing_results);
10763:
10764: $dirRoot = $perlvar{'lonDocRoot'};
10765: if (defined($getpropath)) {
10766: $dirRoot = &propath($udom,$uname);
10767: $dirRoot =~ s/\/$//;
10768: } elsif (defined($getuserdir)) {
10769: my $subdir=$uname.'__';
10770: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10771: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10772: ."/$udom/$subdir/$uname";
10773: } elsif (defined($alternateRoot)) {
10774: $dirRoot = $alternateRoot;
10775: }
10776:
10777: if($udom) {
10778: if($uname) {
10779: my $uhome = &homeserver($uname,$udom);
10780: if ($uhome eq 'no_host') {
10781: return ([],'no_host');
10782: }
10783: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10784: .$getuserdir.':'.&escape($dirRoot)
10785: .':'.&escape($uname).':'.&escape($udom),$uhome);
10786: if ($listing eq 'unknown_cmd') {
10787: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10788: } else {
10789: @listing_results = map { &unescape($_); } split(/:/,$listing);
10790: }
10791: if ($listing eq 'unknown_cmd') {
10792: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10793: @listing_results = split(/:/,$listing);
10794: } else {
10795: @listing_results = map { &unescape($_); } split(/:/,$listing);
10796: }
10797: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10798: ($listing eq 'rejected') || ($listing eq 'refused') ||
10799: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10800: return ([],$listing);
10801: } else {
10802: return (\@listing_results);
10803: }
10804: } elsif(!$alternateRoot) {
10805: my (%allusers,%listerror);
10806: my %servers = &get_servers($udom,'library');
10807: foreach my $tryserver (keys(%servers)) {
10808: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10809: &escape($udom),$tryserver);
10810: if ($listing eq 'unknown_cmd') {
10811: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10812: $udom, $tryserver);
10813: } else {
10814: @listing_results = map { &unescape($_); } split(/:/,$listing);
10815: }
10816: if ($listing eq 'unknown_cmd') {
10817: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10818: $udom, $tryserver);
10819: @listing_results = split(/:/,$listing);
10820: } else {
10821: @listing_results =
10822: map { &unescape($_); } split(/:/,$listing);
10823: }
10824: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10825: ($listing eq 'rejected') || ($listing eq 'refused') ||
10826: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10827: $listerror{$tryserver} = $listing;
10828: } else {
10829: foreach my $line (@listing_results) {
10830: my ($entry) = split(/&/,$line,2);
10831: $allusers{$entry} = 1;
10832: }
10833: }
10834: }
10835: my @alluserslist=();
10836: foreach my $user (sort(keys(%allusers))) {
10837: push(@alluserslist,$user.'&user');
10838: }
10839:
10840: if (!%listerror) {
10841: # no errors
10842: return (\@alluserslist);
10843: } elsif (scalar(keys(%servers)) == 1) {
10844: # one library server, one error
10845: my ($key) = keys(%listerror);
10846: return (\@alluserslist, $listerror{$key});
10847: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10848: # con_lost indicates that we might miss data from at least one
10849: # library server
10850: return (\@alluserslist, 'con_lost');
10851: } else {
10852: # multiple library servers and no con_lost -> data should be
10853: # complete.
10854: return (\@alluserslist);
10855: }
10856:
10857: } else {
10858: return ([],'missing username');
10859: }
10860: } elsif(!defined($getpropath)) {
10861: my $path = $perlvar{'lonDocRoot'}.'/res/';
10862: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10863: return (\@all_domains);
10864: } else {
10865: return ([],'missing domain');
10866: }
10867: }
10868:
10869: # --------------------------------------------- GetFileTimestamp
10870: # This function utilizes dirlist and returns the date stamp for
10871: # when it was last modified. It will also return an error of -1
10872: # if an error occurs
10873:
10874: sub GetFileTimestamp {
10875: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10876: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10877: $studentName = &LONCAPA::clean_username($studentName);
10878: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10879: undef,$getuserdir);
10880: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10881: return -1;
10882: }
10883: if (ref($fileref) eq 'ARRAY') {
10884: my @stats = split('&',$fileref->[0]);
10885: # @stats contains first the filename, then the stat output
10886: return $stats[10]; # so this is 10 instead of 9.
10887: } else {
10888: return -1;
10889: }
10890: }
10891:
10892: sub stat_file {
10893: my ($uri) = @_;
10894: $uri = &clutter_with_no_wrapper($uri);
10895:
10896: my ($udom,$uname,$file);
10897: if ($uri =~ m-^/(uploaded|editupload)/-) {
10898: ($udom,$uname,$file) =
10899: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10900: $file = 'userfiles/'.$file;
10901: }
10902: if ($uri =~ m-^/res/-) {
10903: ($udom,$uname) =
10904: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10905: $file = $uri;
10906: }
10907:
10908: if (!$udom || !$uname || !$file) {
10909: # unable to handle the uri
10910: return ();
10911: }
10912: my $getpropath;
10913: if ($file =~ /^userfiles\//) {
10914: $getpropath = 1;
10915: }
10916: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10917: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10918: return ();
10919: } else {
10920: if (ref($listref) eq 'ARRAY') {
10921: my @stats = split('&',$listref->[0]);
10922: shift(@stats); #filename is first
10923: return @stats;
10924: }
10925: }
10926: return ();
10927: }
10928:
10929: # --------------------------------------------------------- recursedirs
10930: # Recursive function to traverse either a specific user's Authoring Space
10931: # or corresponding Published Resource Space, and populate the hash ref:
10932: # $dirhashref with URLs of all directories, and if $filehashref hash
10933: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
10934: # or .rights files in resource space, and .meta, .save, .log, and .bak
10935: # files in Authoring Space.
10936: #
10937: # Inputs:
10938: #
10939: # $is_home - true if current server is home server for user's space
10940: # $context - either: priv, or res respectively for Authoring or Resource Space.
10941: # $docroot - Document root (i.e., /home/httpd/html
10942: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
10943: # $relpath - Current path (relative to top level).
10944: # $dirhashref - reference to hash to populate with URLs of directories (Required)
10945: # $filehashref - reference to hash to populate with URLs of files (Optional)
10946: #
10947: # Returns: nothing
10948: #
10949: # Side Effects: populates $dirhashref, and $filehashref (if provided).
10950: #
10951: # Currently used by interface/londocs.pm to create linked select boxes for
10952: # directory and filename to import a Course "Author" resource into a course, and
10953: # also to create linked select boxes for Authoring Space and Directory to choose
10954: # save location for creation of a new "standard" problem from the Course Editor.
10955: #
10956:
10957: sub recursedirs {
10958: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
10959: return unless (ref($dirhashref) eq 'HASH');
10960: my $currpath = $docroot.$toppath;
10961: if ($relpath) {
10962: $currpath .= "/$relpath";
10963: }
10964: my $savefile;
10965: if (ref($filehashref)) {
10966: $savefile = 1;
10967: }
10968: if ($is_home) {
10969: if (opendir(my $dirh,$currpath)) {
10970: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
10971: next if ($item eq '');
10972: if (-d "$currpath/$item") {
10973: my $newpath;
10974: if ($relpath) {
10975: $newpath = "$relpath/$item";
10976: } else {
10977: $newpath = $item;
10978: }
10979: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10980: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10981: } elsif ($savefile) {
10982: if ($context eq 'priv') {
10983: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10984: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10985: }
10986: } else {
10987: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
10988: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10989: }
10990: }
10991: }
10992: }
10993: closedir($dirh);
10994: }
10995: } else {
10996: my ($dirlistref,$listerror) =
10997: &dirlist($toppath.$relpath);
10998: my @dir_lines;
10999: my $dirptr=16384;
11000: if (ref($dirlistref) eq 'ARRAY') {
11001: foreach my $dir_line (sort
11002: {
11003: my ($afile)=split('&',$a,2);
11004: my ($bfile)=split('&',$b,2);
11005: return (lc($afile) cmp lc($bfile));
11006: } (@{$dirlistref})) {
11007: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11008: split(/\&/,$dir_line,16);
11009: $item =~ s/\s+$//;
11010: next if (($item =~ /^\.\.?$/) || ($obs));
11011: if ($dirptr&$testdir) {
11012: my $newpath;
11013: if ($relpath) {
11014: $newpath = "$relpath/$item";
11015: } else {
11016: $relpath = '/';
11017: $newpath = $item;
11018: }
11019: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11020: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11021: } elsif ($savefile) {
11022: if ($context eq 'priv') {
11023: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11024: $filehashref->{$relpath}{$item} = 1;
11025: }
11026: } else {
11027: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11028: $filehashref->{$relpath}{$item} = 1;
11029: }
11030: }
11031: }
11032: }
11033: }
11034: }
11035: return;
11036: }
11037:
11038: # -------------------------------------------------------- Value of a Condition
11039:
11040: # gets the value of a specific preevaluated condition
11041: # stored in the string $env{user.state.<cid>}
11042: # or looks up a condition reference in the bighash and if if hasn't
11043: # already been evaluated recurses into docondval to get the value of
11044: # the condition, then memoizing it to
11045: # $env{user.state.<cid>.<condition>}
11046: sub directcondval {
11047: my $number=shift;
11048: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11049: &Apache::lonuserstate::evalstate();
11050: }
11051: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11052: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11053: } elsif ($number =~ /^_/) {
11054: my $sub_condition;
11055: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11056: &GDBM_READER(),0640)) {
11057: $sub_condition=$bighash{'conditions'.$number};
11058: untie(%bighash);
11059: }
11060: my $value = &docondval($sub_condition);
11061: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11062: return $value;
11063: }
11064: if ($env{'user.state.'.$env{'request.course.id'}}) {
11065: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11066: } else {
11067: return 2;
11068: }
11069: }
11070:
11071: # get the collection of conditions for this resource
11072: sub condval {
11073: my $condidx=shift;
11074: my $allpathcond='';
11075: foreach my $cond (split(/\|/,$condidx)) {
11076: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11077: $allpathcond.=
11078: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11079: }
11080: }
11081: $allpathcond=~s/\|$//;
11082: return &docondval($allpathcond);
11083: }
11084:
11085: #evaluates an expression of conditions
11086: sub docondval {
11087: my ($allpathcond) = @_;
11088: my $result=0;
11089: if ($env{'request.course.id'}
11090: && defined($allpathcond)) {
11091: my $operand='|';
11092: my @stack;
11093: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11094: if ($chunk eq '(') {
11095: push @stack,($operand,$result);
11096: } elsif ($chunk eq ')') {
11097: my $before=pop @stack;
11098: if (pop @stack eq '&') {
11099: $result=$result>$before?$before:$result;
11100: } else {
11101: $result=$result>$before?$result:$before;
11102: }
11103: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11104: $operand=$chunk;
11105: } else {
11106: my $new=directcondval($chunk);
11107: if ($operand eq '&') {
11108: $result=$result>$new?$new:$result;
11109: } else {
11110: $result=$result>$new?$result:$new;
11111: }
11112: }
11113: }
11114: }
11115: return $result;
11116: }
11117:
11118: # ---------------------------------------------------- Devalidate courseresdata
11119:
11120: sub devalidatecourseresdata {
11121: my ($coursenum,$coursedomain)=@_;
11122: my $hashid=$coursenum.':'.$coursedomain;
11123: &devalidate_cache_new('courseres',$hashid);
11124: }
11125:
11126:
11127: # --------------------------------------------------- Course Resourcedata Query
11128: #
11129: # Parameters:
11130: # $coursenum - Number of the course.
11131: # $coursedomain - Domain at which the course was created.
11132: # Returns:
11133: # A hash of the course parameters along (I think) with timestamps
11134: # and version info.
11135:
11136: sub get_courseresdata {
11137: my ($coursenum,$coursedomain)=@_;
11138: my $coursehom=&homeserver($coursenum,$coursedomain);
11139: my $hashid=$coursenum.':'.$coursedomain;
11140: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11141: my %dumpreply;
11142: unless (defined($cached)) {
11143: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11144: $result=\%dumpreply;
11145: my ($tmp) = keys(%dumpreply);
11146: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11147: &do_cache_new('courseres',$hashid,$result,600);
11148: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11149: return $tmp;
11150: } elsif ($tmp =~ /^(error)/) {
11151: $result=undef;
11152: &do_cache_new('courseres',$hashid,$result,600);
11153: }
11154: }
11155: return $result;
11156: }
11157:
11158: sub devalidateuserresdata {
11159: my ($uname,$udom)=@_;
11160: my $hashid="$udom:$uname";
11161: &devalidate_cache_new('userres',$hashid);
11162: }
11163:
11164: sub get_userresdata {
11165: my ($uname,$udom)=@_;
11166: #most student don\'t have any data set, check if there is some data
11167: if (&EXT_cache_status($udom,$uname)) { return undef; }
11168:
11169: my $hashid="$udom:$uname";
11170: my ($result,$cached)=&is_cached_new('userres',$hashid);
11171: if (!defined($cached)) {
11172: my %resourcedata=&dump('resourcedata',$udom,$uname);
11173: $result=\%resourcedata;
11174: &do_cache_new('userres',$hashid,$result,600);
11175: }
11176: my ($tmp)=keys(%$result);
11177: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11178: return $result;
11179: }
11180: #error 2 occurs when the .db doesn't exist
11181: if ($tmp!~/error: 2 /) {
11182: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11183: &logthis("<font color=\"blue\">WARNING:".
11184: " Trying to get resource data for ".
11185: $uname." at ".$udom.": ".
11186: $tmp."</font>");
11187: }
11188: } elsif ($tmp=~/error: 2 /) {
11189: #&EXT_cache_set($udom,$uname);
11190: &do_cache_new('userres',$hashid,undef,600);
11191: undef($tmp); # not really an error so don't send it back
11192: }
11193: return $tmp;
11194: }
11195: #----------------------------------------------- resdata - return resource data
11196: # Purpose:
11197: # Return resource data for either users or for a course.
11198: # Parameters:
11199: # $name - Course/user name.
11200: # $domain - Name of the domain the user/course is registered on.
11201: # $type - Type of thing $name is (must be 'course' or 'user')
11202: # $mapp - decluttered URL of enclosing map
11203: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11204: # $recurseup - Ref to array of map URLs, starting with map containing
11205: # $mapp up through hierarchy of nested maps to top level map.
11206: # $courseid - CourseID (first part of param identifier).
11207: # $modifier - Middle part of param identifier.
11208: # $what - Last part of param identifier.
11209: # @which - Array of names of resources desired.
11210: # Returns:
11211: # The value of the first reasource in @which that is found in the
11212: # resource hash.
11213: # Exceptional Conditions:
11214: # If the $type passed in is not valid (not the string 'course' or
11215: # 'user', an undefined reference is returned.
11216: # If none of the resources are found, an undef is returned
11217: sub resdata {
11218: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11219: $modifier,$what,@which)=@_;
11220: my $result;
11221: if ($type eq 'course') {
11222: $result=&get_courseresdata($name,$domain);
11223: } elsif ($type eq 'user') {
11224: $result=&get_userresdata($name,$domain);
11225: }
11226: if (!ref($result)) { return $result; }
11227: foreach my $item (@which) {
11228: if ($item->[1] eq 'course') {
11229: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11230: unless ($$recursed) {
11231: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11232: $$recursed = 1;
11233: }
11234: foreach my $item (@${recurseup}) {
11235: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11236: last if (defined($result->{$norecursechk}));
11237: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11238: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11239: }
11240: }
11241: }
11242: if (defined($result->{$item->[0]})) {
11243: return [$result->{$item->[0]},$item->[1]];
11244: }
11245: }
11246: return undef;
11247: }
11248:
11249: sub get_domain_lti {
11250: my ($cdom,$context) = @_;
11251: my ($name,%lti);
11252: if ($context eq 'consumer') {
11253: $name = 'ltitools';
11254: } elsif ($context eq 'provider') {
11255: $name = 'lti';
11256: } else {
11257: return %lti;
11258: }
11259: my ($result,$cached)=&is_cached_new($name,$cdom);
11260: if (defined($cached)) {
11261: if (ref($result) eq 'HASH') {
11262: %lti = %{$result};
11263: }
11264: } else {
11265: my %domconfig = &get_dom('configuration',[$name],$cdom);
11266: if (ref($domconfig{$name}) eq 'HASH') {
11267: %lti = %{$domconfig{$name}};
11268: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11269: if (ref($encdomconfig{$name}) eq 'HASH') {
11270: foreach my $id (keys(%lti)) {
11271: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11272: foreach my $item ('key','secret') {
11273: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11274: }
11275: }
11276: }
11277: }
11278: }
11279: my $cachetime = 24*60*60;
11280: &do_cache_new($name,$cdom,\%lti,$cachetime);
11281: }
11282: return %lti;
11283: }
11284:
11285: sub get_numsuppfiles {
11286: my ($cnum,$cdom,$ignorecache)=@_;
11287: my $hashid=$cnum.':'.$cdom;
11288: my ($suppcount,$cached);
11289: unless ($ignorecache) {
11290: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11291: }
11292: unless (defined($cached)) {
11293: my $chome=&homeserver($cnum,$cdom);
11294: unless ($chome eq 'no_host') {
11295: ($suppcount,my $supptools,my $errors) = (0,0,0);
11296: my $suppmap = 'supplemental.sequence';
11297: ($suppcount,$supptools,$errors) =
11298: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11299: $supptools,$errors);
11300: }
11301: &do_cache_new('suppcount',$hashid,$suppcount,600);
11302: }
11303: return $suppcount;
11304: }
11305:
11306: #
11307: # EXT resource caching routines
11308: #
11309:
11310: {
11311: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11312: #
11313: # The course for which we cache
11314: my $cachedmapkey='';
11315: # The cached recursive maps for this course
11316: my %cachedmaps=();
11317: # When this was last done
11318: my $cachedmaptime='';
11319:
11320: sub clear_EXT_cache_status {
11321: &delenv('cache.EXT.');
11322: }
11323:
11324: sub EXT_cache_status {
11325: my ($target_domain,$target_user) = @_;
11326: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11327: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11328: # We know already the user has no data
11329: return 1;
11330: } else {
11331: return 0;
11332: }
11333: }
11334:
11335: sub EXT_cache_set {
11336: my ($target_domain,$target_user) = @_;
11337: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11338: #&appenv({$cachename => time});
11339: }
11340:
11341: # --------------------------------------------------------- Value of a Variable
11342: sub EXT {
11343:
11344: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11345: unless ($varname) { return ''; }
11346: #get real user name/domain, courseid and symb
11347: my $courseid;
11348: my $publicuser;
11349: if ($symbparm) {
11350: $symbparm=&get_symb_from_alias($symbparm);
11351: }
11352: if (!($uname && $udom)) {
11353: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11354: if (!$symbparm) { $symbparm=$cursymb; }
11355: } else {
11356: $courseid=$env{'request.course.id'};
11357: }
11358: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11359: my $rest;
11360: if (defined($therest[0])) {
11361: $rest=join('.',@therest);
11362: } else {
11363: $rest='';
11364: }
11365:
11366: my $qualifierrest=$qualifier;
11367: if ($rest) { $qualifierrest.='.'.$rest; }
11368: my $spacequalifierrest=$space;
11369: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11370: if ($realm eq 'user') {
11371: # --------------------------------------------------------------- user.resource
11372: if ($space eq 'resource') {
11373: if ( (defined($Apache::lonhomework::parsing_a_problem)
11374: || defined($Apache::lonhomework::parsing_a_task))
11375: &&
11376: ($symbparm eq &symbread()) ) {
11377: # if we are in the middle of processing the resource the
11378: # get the value we are planning on committing
11379: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11380: return $Apache::lonhomework::results{$qualifierrest};
11381: } else {
11382: return $Apache::lonhomework::history{$qualifierrest};
11383: }
11384: } else {
11385: my %restored;
11386: if ($publicuser || $env{'request.state'} eq 'construct') {
11387: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11388: } else {
11389: %restored=&restore($symbparm,$courseid,$udom,$uname);
11390: }
11391: return $restored{$qualifierrest};
11392: }
11393: # ----------------------------------------------------------------- user.access
11394: } elsif ($space eq 'access') {
11395: # FIXME - not supporting calls for a specific user
11396: return &allowed($qualifier,$rest);
11397: # ------------------------------------------ user.preferences, user.environment
11398: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11399: if (($uname eq $env{'user.name'}) &&
11400: ($udom eq $env{'user.domain'})) {
11401: return $env{join('.',('environment',$qualifierrest))};
11402: } else {
11403: my %returnhash;
11404: if (!$publicuser) {
11405: %returnhash=&userenvironment($udom,$uname,
11406: $qualifierrest);
11407: }
11408: return $returnhash{$qualifierrest};
11409: }
11410: # ----------------------------------------------------------------- user.course
11411: } elsif ($space eq 'course') {
11412: # FIXME - not supporting calls for a specific user
11413: return $env{join('.',('request.course',$qualifier))};
11414: # ------------------------------------------------------------------- user.role
11415: } elsif ($space eq 'role') {
11416: # FIXME - not supporting calls for a specific user
11417: my ($role,$where)=split(/\./,$env{'request.role'});
11418: if ($qualifier eq 'value') {
11419: return $role;
11420: } elsif ($qualifier eq 'extent') {
11421: return $where;
11422: }
11423: # ----------------------------------------------------------------- user.domain
11424: } elsif ($space eq 'domain') {
11425: return $udom;
11426: # ------------------------------------------------------------------- user.name
11427: } elsif ($space eq 'name') {
11428: return $uname;
11429: # ---------------------------------------------------- Any other user namespace
11430: } else {
11431: my %reply;
11432: if (!$publicuser) {
11433: %reply=&get($space,[$qualifierrest],$udom,$uname);
11434: }
11435: return $reply{$qualifierrest};
11436: }
11437: } elsif ($realm eq 'query') {
11438: # ---------------------------------------------- pull stuff out of query string
11439: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11440: [$spacequalifierrest]);
11441: return $env{'form.'.$spacequalifierrest};
11442: } elsif ($realm eq 'request') {
11443: # ------------------------------------------------------------- request.browser
11444: if ($space eq 'browser') {
11445: return $env{'browser.'.$qualifier};
11446: # ------------------------------------------------------------ request.filename
11447: } else {
11448: return $env{'request.'.$spacequalifierrest};
11449: }
11450: } elsif ($realm eq 'course') {
11451: # ---------------------------------------------------------- course.description
11452: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11453: } elsif ($realm eq 'resource') {
11454:
11455: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11456: if (!$symbparm) { $symbparm=&symbread(); }
11457: }
11458:
11459: if ($qualifier eq '') {
11460: if ($space eq 'title') {
11461: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11462: return &gettitle($symbparm);
11463: }
11464:
11465: if ($space eq 'map') {
11466: my ($map) = &decode_symb($symbparm);
11467: return &symbread($map);
11468: }
11469: if ($space eq 'maptitle') {
11470: my ($map) = &decode_symb($symbparm);
11471: return &gettitle($map);
11472: }
11473: if ($space eq 'filename') {
11474: if ($symbparm) {
11475: return &clutter((&decode_symb($symbparm))[2]);
11476: }
11477: return &hreflocation('',$env{'request.filename'});
11478: }
11479:
11480: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11481: if ($space eq 'visibleparts') {
11482: my $navmap = Apache::lonnavmaps::navmap->new();
11483: my $item;
11484: if (ref($navmap)) {
11485: my $res = $navmap->getBySymb($symbparm);
11486: my $parts = $res->parts();
11487: if (ref($parts) eq 'ARRAY') {
11488: $item = join(',',@{$parts});
11489: }
11490: undef($navmap);
11491: }
11492: return $item;
11493: }
11494: }
11495: }
11496:
11497: my ($section, $group, @groups, @recurseup, $recursed);
11498: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11499: if (($courseid eq '') && ($cid)) {
11500: $courseid = $cid;
11501: }
11502: if (($symbparm && $courseid) &&
11503: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11504:
11505: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11506:
11507: # ----------------------------------------------------- Cascading lookup scheme
11508: my $symbp=$symbparm;
11509: $mapp=&deversion((&decode_symb($symbp))[0]);
11510: my $symbparm=$symbp.'.'.$spacequalifierrest;
11511: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11512: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11513: if (($env{'user.name'} eq $uname) &&
11514: ($env{'user.domain'} eq $udom)) {
11515: $section=$env{'request.course.sec'};
11516: @groups = split(/:/,$env{'request.course.groups'});
11517: @groups=&sort_course_groups($courseid,@groups);
11518: } else {
11519: if (! defined($usection)) {
11520: $section=&getsection($udom,$uname,$courseid);
11521: } else {
11522: $section = $usection;
11523: }
11524: @groups = &get_users_groups($udom,$uname,$courseid);
11525: }
11526:
11527: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11528: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11529: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11530: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11531:
11532: $courselevel=$courseid.'.'.$spacequalifierrest;
11533: my $courselevelr=$courseid.'.'.$symbparm;
11534: $courseleveli=$courseid.'.'.$recurseparm;
11535: $courselevelm=$courseid.'.'.$mapparm;
11536:
11537: # ----------------------------------------------------------- first, check user
11538:
11539: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11540: \@recurseup,$courseid,'.',$spacequalifierrest,
11541: ([$courselevelr,'resource'],
11542: [$courselevelm,'map' ],
11543: [$courseleveli,'map' ],
11544: [$courselevel, 'course' ]));
11545: if (defined($userreply)) { return &get_reply($userreply); }
11546:
11547: # ------------------------------------------------ second, check some of course
11548: my $coursereply;
11549: if (@groups > 0) {
11550: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11551: $recurseparm,$mapparm,$spacequalifierrest,
11552: $mapp,\$recursed,\@recurseup);
11553: if (defined($coursereply)) { return &get_reply($coursereply); }
11554: }
11555:
11556: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11557: $env{'course.'.$courseid.'.domain'},
11558: 'course',$mapp,\$recursed,\@recurseup,
11559: $courseid,'.['.$section.'].',$spacequalifierrest,
11560: ([$seclevelr, 'resource'],
11561: [$seclevelm, 'map' ],
11562: [$secleveli, 'map' ],
11563: [$seclevel, 'course' ],
11564: [$courselevelr,'resource']));
11565: if (defined($coursereply)) { return &get_reply($coursereply); }
11566:
11567: # ------------------------------------------------------ third, check map parms
11568: my %parmhash=();
11569: my $thisparm='';
11570: if (tie(%parmhash,'GDBM_File',
11571: $env{'request.course.fn'}.'_parms.db',
11572: &GDBM_READER(),0640)) {
11573: $thisparm=$parmhash{$symbparm};
11574: untie(%parmhash);
11575: }
11576: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11577: }
11578: # ------------------------------------------ fourth, look in resource metadata
11579:
11580: my $what = $spacequalifierrest;
11581: $what=~s/\./\_/;
11582: my $filename;
11583: if (!$symbparm) { $symbparm=&symbread(); }
11584: if ($symbparm) {
11585: $filename=(&decode_symb($symbparm))[2];
11586: } else {
11587: $filename=$env{'request.filename'};
11588: }
11589: my $toolsymb;
11590: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11591: $toolsymb = $symbparm;
11592: }
11593: my $metadata=&metadata($filename,$what,$toolsymb);
11594: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11595: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11596: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11597:
11598: # ----------------------------------------------- fifth, look in rest of course
11599: if ($symbparm && defined($courseid) &&
11600: $courseid eq $env{'request.course.id'}) {
11601: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11602: $env{'course.'.$courseid.'.domain'},
11603: 'course',$mapp,\$recursed,\@recurseup,
11604: $courseid,'.',$spacequalifierrest,
11605: ([$courselevelm,'map' ],
11606: [$courseleveli,'map' ],
11607: [$courselevel, 'course']));
11608: if (defined($coursereply)) { return &get_reply($coursereply); }
11609: }
11610: # ------------------------------------------------------------------ Cascade up
11611: unless ($space eq '0') {
11612: my @parts=split(/_/,$space);
11613: my $id=pop(@parts);
11614: my $part=join('_',@parts);
11615: if ($part eq '') { $part='0'; }
11616: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11617: $symbparm,$udom,$uname,$section,1);
11618: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11619: }
11620: if ($recurse) { return undef; }
11621: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11622: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11623: # ---------------------------------------------------- Any other user namespace
11624: } elsif ($realm eq 'environment') {
11625: # ----------------------------------------------------------------- environment
11626: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11627: return $env{'environment.'.$spacequalifierrest};
11628: } else {
11629: if ($uname eq 'anonymous' && $udom eq '') {
11630: return '';
11631: }
11632: my %returnhash=&userenvironment($udom,$uname,
11633: $spacequalifierrest);
11634: return $returnhash{$spacequalifierrest};
11635: }
11636: } elsif ($realm eq 'system') {
11637: # ----------------------------------------------------------------- system.time
11638: if ($space eq 'time') {
11639: return time;
11640: }
11641: } elsif ($realm eq 'server') {
11642: # ----------------------------------------------------------------- system.time
11643: if ($space eq 'name') {
11644: return $ENV{'SERVER_NAME'};
11645: }
11646: }
11647: return '';
11648: }
11649:
11650: sub get_reply {
11651: my ($reply_value) = @_;
11652: if (ref($reply_value) eq 'ARRAY') {
11653: if (wantarray) {
11654: return @$reply_value;
11655: }
11656: return $reply_value->[0];
11657: } else {
11658: return $reply_value;
11659: }
11660: }
11661:
11662: sub check_group_parms {
11663: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11664: $recursed,$recurseupref) = @_;
11665: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11666: [$what,'course']);
11667: my $coursereply;
11668: foreach my $group (@{$groups}) {
11669: my @groupitems = ();
11670: foreach my $level (@levels) {
11671: my $item = $courseid.'.['.$group.'].'.$level->[0];
11672: push(@groupitems,[$item,$level->[1]]);
11673: }
11674: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11675: $env{'course.'.$courseid.'.domain'},
11676: 'course',$mapp,$recursed,$recurseupref,
11677: $courseid,'.['.$group.'].',$what,
11678: @groupitems);
11679: last if (defined($coursereply));
11680: }
11681: return $coursereply;
11682: }
11683:
11684: sub get_map_hierarchy {
11685: my ($mapname,$courseid) = @_;
11686: my @recurseup = ();
11687: if ($mapname) {
11688: if (($cachedmapkey eq $courseid) &&
11689: (abs($cachedmaptime-time)<5)) {
11690: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11691: return @{$cachedmaps{$mapname}};
11692: }
11693: }
11694: my $navmap = Apache::lonnavmaps::navmap->new();
11695: if (ref($navmap)) {
11696: @recurseup = $navmap->recurseup_maps($mapname);
11697: undef($navmap);
11698: $cachedmaps{$mapname} = \@recurseup;
11699: $cachedmaptime=time;
11700: $cachedmapkey=$courseid;
11701: }
11702: }
11703: return @recurseup;
11704: }
11705:
11706: }
11707:
11708: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11709: my ($courseid,@groups) = @_;
11710: @groups = sort(@groups);
11711: return @groups;
11712: }
11713:
11714: sub packages_tab_default {
11715: my ($uri,$varname,$toolsymb)=@_;
11716: my (undef,$part,$name)=split(/\./,$varname);
11717:
11718: my (@extension,@specifics,$do_default);
11719: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11720: my ($pack_type,$pack_part)=split(/_/,$package,2);
11721: if ($pack_type eq 'default') {
11722: $do_default=1;
11723: } elsif ($pack_type eq 'extension') {
11724: push(@extension,[$package,$pack_type,$pack_part]);
11725: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11726: # only look at packages defaults for packages that this id is
11727: push(@specifics,[$package,$pack_type,$pack_part]);
11728: }
11729: }
11730: # first look for a package that matches the requested part id
11731: foreach my $package (@specifics) {
11732: my (undef,$pack_type,$pack_part)=@{$package};
11733: next if ($pack_part ne $part);
11734: if (defined($packagetab{"$pack_type&$name&default"})) {
11735: return $packagetab{"$pack_type&$name&default"};
11736: }
11737: }
11738: # look for any possible matching non extension_ package
11739: foreach my $package (@specifics) {
11740: my (undef,$pack_type,$pack_part)=@{$package};
11741: if (defined($packagetab{"$pack_type&$name&default"})) {
11742: return $packagetab{"$pack_type&$name&default"};
11743: }
11744: if ($pack_type eq 'part') { $pack_part='0'; }
11745: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11746: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11747: }
11748: }
11749: # look for any posible extension_ match
11750: foreach my $package (@extension) {
11751: my ($package,$pack_type)=@{$package};
11752: if (defined($packagetab{"$pack_type&$name&default"})) {
11753: return $packagetab{"$pack_type&$name&default"};
11754: }
11755: if (defined($packagetab{$package."&$name&default"})) {
11756: return $packagetab{$package."&$name&default"};
11757: }
11758: }
11759: # look for a global default setting
11760: if ($do_default && defined($packagetab{"default&$name&default"})) {
11761: return $packagetab{"default&$name&default"};
11762: }
11763: return undef;
11764: }
11765:
11766: sub add_prefix_and_part {
11767: my ($prefix,$part)=@_;
11768: my $keyroot;
11769: if (defined($prefix) && $prefix !~ /^__/) {
11770: # prefix that has a part already
11771: $keyroot=$prefix;
11772: } elsif (defined($prefix)) {
11773: # prefix that is missing a part
11774: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11775: } else {
11776: # no prefix at all
11777: if (defined($part)) { $keyroot='_'.$part; }
11778: }
11779: return $keyroot;
11780: }
11781:
11782: # ---------------------------------------------------------------- Get metadata
11783:
11784: my %metaentry;
11785: my %importedpartids;
11786: my %importedrespids;
11787: sub metadata {
11788: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11789: $uri=&declutter($uri);
11790: # if it is a non metadata possible uri return quickly
11791: if (($uri eq '') ||
11792: (($uri =~ m|^/*adm/|) &&
11793: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11794: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11795: return undef;
11796: }
11797: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11798: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11799: return undef;
11800: }
11801: my $filename=$uri;
11802: $uri=~s/\.meta$//;
11803: #
11804: # Is the metadata already cached?
11805: # Look at timestamp of caching
11806: # Everything is cached by the main uri, libraries are never directly cached
11807: #
11808: if (!defined($liburi)) {
11809: my ($result,$cached)=&is_cached_new('meta',$uri);
11810: if (defined($cached)) { return $result->{':'.$what}; }
11811: }
11812:
11813: #
11814: # If the uri is for an external tool the file from
11815: # which metadata should be retrieved depends on whether
11816: # the tool had been configured to be gradable (set in the Course
11817: # Editor or Resource Editor).
11818: #
11819: # If a valid symb has been included as the third arg in the call
11820: # to &metadata() that can be used to retrieve the value of
11821: # parameter_0_gradable set for the resource, and included in the
11822: # uploaded map containing the tool. The value is retrieved via
11823: # &EXT(), if a valid symb is available. Otherwise the value of
11824: # gradable in the exttool_$marker.db file for the tool instance
11825: # is retrieved via &get().
11826: #
11827: # When lonuserstate::traceroute() calls lonnet::EXT() for
11828: # hiddenresource and encrypturl (during course initialization)
11829: # the map-level parameter for resource.0.gradable included in the
11830: # uploaded map containing the tool will not yet have been stored
11831: # in the user_course_parms.db file for the user's session, so in
11832: # this case fall back to retrieving gradable status from the
11833: # exttool_$marker.db file.
11834: #
11835: # In order to avoid an infinite loop, &metadata() will return
11836: # before a call to &EXT(), if the uri is for an external tool
11837: # and the $what for which metadata is being requested is
11838: # parameter_0_gradable or 0_gradable.
11839: #
11840:
11841: if ($uri =~ /ext\.tool$/) {
11842: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11843: return;
11844: } else {
11845: my ($checked,$use_passback);
11846: if ($toolsymb ne '') {
11847: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11848: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11849: $checked = 1;
11850: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11851: $use_passback = 1;
11852: }
11853: }
11854: }
11855: unless ($checked) {
11856: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11857: $marker=~s/\D//g;
11858: if ($marker) {
11859: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11860: $use_passback = $toolsettings{'gradable'};
11861: }
11862: }
11863: if ($use_passback) {
11864: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11865: } else {
11866: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11867: }
11868: }
11869: }
11870:
11871: {
11872: # Imported parts would go here
11873: my @origfiletagids=();
11874: my $importedparts=0;
11875:
11876: # Imported responseids would go here
11877: my $importedresponses=0;
11878: #
11879: # Is this a recursive call for a library?
11880: #
11881: # if (! exists($metacache{$uri})) {
11882: # $metacache{$uri}={};
11883: # }
11884: my $cachetime = 60*60;
11885: if ($liburi) {
11886: $liburi=&declutter($liburi);
11887: $filename=$liburi;
11888: } else {
11889: &devalidate_cache_new('meta',$uri);
11890: undef(%metaentry);
11891: }
11892: my %metathesekeys=();
11893: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11894: my $metastring;
11895: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11896: my $which = &hreflocation('','/'.($liburi || $uri));
11897: $metastring =
11898: &Apache::lonnet::ssi_body($which,
11899: ('grade_target' => 'meta'));
11900: $cachetime = 1; # only want this cached in the child not long term
11901: } elsif (($uri !~ m -^(editupload)/-) &&
11902: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11903: my $file=&filelocation('',&clutter($filename));
11904: #push(@{$metaentry{$uri.'.file'}},$file);
11905: $metastring=&getfile($file);
11906: }
11907: my $parser=HTML::LCParser->new(\$metastring);
11908: my $token;
11909: undef %metathesekeys;
11910: while ($token=$parser->get_token) {
11911: if ($token->[0] eq 'S') {
11912: if (defined($token->[2]->{'package'})) {
11913: #
11914: # This is a package - get package info
11915: #
11916: my $package=$token->[2]->{'package'};
11917: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11918: if (defined($token->[2]->{'id'})) {
11919: $keyroot.='_'.$token->[2]->{'id'};
11920: }
11921: if ($metaentry{':packages'}) {
11922: $metaentry{':packages'}.=','.$package.$keyroot;
11923: } else {
11924: $metaentry{':packages'}=$package.$keyroot;
11925: }
11926: foreach my $pack_entry (keys(%packagetab)) {
11927: my $part=$keyroot;
11928: $part=~s/^\_//;
11929: if ($pack_entry=~/^\Q$package\E\&/ ||
11930: $pack_entry=~/^\Q$package\E_0\&/) {
11931: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11932: # ignore package.tab specified default values
11933: # here &package_tab_default() will fetch those
11934: if ($subp eq 'default') { next; }
11935: my $value=$packagetab{$pack_entry};
11936: my $unikey;
11937: if ($pack =~ /_0$/) {
11938: $unikey='parameter_0_'.$name;
11939: $part=0;
11940: } else {
11941: $unikey='parameter'.$keyroot.'_'.$name;
11942: }
11943: if ($subp eq 'display') {
11944: $value.=' [Part: '.$part.']';
11945: }
11946: $metaentry{':'.$unikey.'.part'}=$part;
11947: $metathesekeys{$unikey}=1;
11948: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11949: $metaentry{':'.$unikey.'.'.$subp}=$value;
11950: }
11951: if (defined($metaentry{':'.$unikey.'.default'})) {
11952: $metaentry{':'.$unikey}=
11953: $metaentry{':'.$unikey.'.default'};
11954: }
11955: }
11956: }
11957: } else {
11958: #
11959: # This is not a package - some other kind of start tag
11960: #
11961: my $entry=$token->[1];
11962: my $unikey='';
11963:
11964: if ($entry eq 'import') {
11965: #
11966: # Importing a library here
11967: #
11968: my $location=$parser->get_text('/import');
11969: my $dir=$filename;
11970: $dir=~s|[^/]*$||;
11971: $location=&filelocation($dir,$location);
11972:
11973: my $importid=$token->[2]->{'id'};
11974: my $importmode=$token->[2]->{'importmode'};
11975: #
11976: # Check metadata for imported file to
11977: # see if it contained response items
11978: #
11979: my ($origfile,@libfilekeys);
11980: my %currmetaentry = %metaentry;
11981: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
11982: $depthcount+1));
11983: if (grep(/^responseorder$/,@libfilekeys)) {
11984: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
11985: undef,$depthcount+1);
11986: if ($libresponseorder ne '') {
11987: if ($#origfiletagids<0) {
11988: undef(%importedrespids);
11989: undef(%importedpartids);
11990: }
11991: my @respids = split(/\s*,\s*/,$libresponseorder);
11992: if (@respids) {
11993: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
11994: }
11995: if ($importedrespids{$importid} ne '') {
11996: $importedresponses = 1;
11997: # We need to get the original file and the imported file to get the response order correct
11998: # Load and inspect original file
11999: if ($#origfiletagids<0) {
12000: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12001: $origfile=&getfile($origfilelocation);
12002: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12003: }
12004: }
12005: }
12006: }
12007: # Do not overwrite contents of %metaentry hash for resource itself with
12008: # hash populated for imported library file
12009: %metaentry = %currmetaentry;
12010: undef(%currmetaentry);
12011: if ($importmode eq 'part') {
12012: # Import as part(s)
12013: $importedparts=1;
12014: # We need to get the original file and the imported file to get the part order correct
12015: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12016: # Load and inspect original file if we didn't do that already
12017: if ($#origfiletagids<0) {
12018: undef(%importedrespids);
12019: undef(%importedpartids);
12020: if ($origfile eq '') {
12021: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12022: $origfile=&getfile($origfilelocation);
12023: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12024: }
12025: }
12026: my @impfilepartids;
12027: # If <partorder> tag is included in metadata for the imported file
12028: # get the parts in the imported file from that.
12029: if (grep(/^partorder$/,@libfilekeys)) {
12030: %currmetaentry = %metaentry;
12031: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12032: $depthcount+1);
12033: %metaentry = %currmetaentry;
12034: undef(%currmetaentry);
12035: if ($libpartorder ne '') {
12036: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12037: }
12038: } else {
12039: # If no <partorder> tag available, load and inspect imported file
12040: my $impfile=&getfile($location);
12041: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12042: }
12043: if ($#impfilepartids>=0) {
12044: # This problem had parts
12045: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12046: } else {
12047: # Importing by turning a single problem into a problem part
12048: # It gets the import-tags ID as part-ID
12049: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12050: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12051: }
12052: } else {
12053: # Import as problem or as normal import
12054: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12055: unless ($importmode eq 'problem') {
12056: # Normal import
12057: if (defined($token->[2]->{'id'})) {
12058: $unikey.='_'.$token->[2]->{'id'};
12059: }
12060: }
12061: # Check metadata for imported file to
12062: # see if it contained parts
12063: if (grep(/^partorder$/,@libfilekeys)) {
12064: %currmetaentry = %metaentry;
12065: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12066: $depthcount+1);
12067: %metaentry = %currmetaentry;
12068: undef(%currmetaentry);
12069: if ($libpartorder ne '') {
12070: $importedparts = 1;
12071: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12072: }
12073: }
12074: }
12075: if ($depthcount<20) {
12076: my $metadata =
12077: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12078: $depthcount+1);
12079: foreach my $meta (split(',',$metadata)) {
12080: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12081: $metathesekeys{$meta}=1;
12082: }
12083: }
12084: } else {
12085: #
12086: # Not importing, some other kind of non-package, non-library start tag
12087: #
12088: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12089: if (defined($token->[2]->{'id'})) {
12090: $unikey.='_'.$token->[2]->{'id'};
12091: }
12092: if (defined($token->[2]->{'name'})) {
12093: $unikey.='_'.$token->[2]->{'name'};
12094: }
12095: $metathesekeys{$unikey}=1;
12096: foreach my $param (@{$token->[3]}) {
12097: $metaentry{':'.$unikey.'.'.$param} =
12098: $token->[2]->{$param};
12099: }
12100: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12101: my $default=$metaentry{':'.$unikey.'.default'};
12102: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12103: # only ws inside the tag, and not in default, so use default
12104: # as value
12105: $metaentry{':'.$unikey}=$default;
12106: } elsif ( $internaltext =~ /\S/ ) {
12107: # something interesting inside the tag
12108: $metaentry{':'.$unikey}=$internaltext;
12109: } else {
12110: # no interesting values, don't set a default
12111: }
12112: # end of not-a-package not-a-library import
12113: }
12114: # end of not-a-package start tag
12115: }
12116: # the next is the end of "start tag"
12117: }
12118: }
12119: my ($extension) = ($uri =~ /\.(\w+)$/);
12120: $extension = lc($extension);
12121: if ($extension eq 'htm') { $extension='html'; }
12122:
12123: foreach my $key (keys(%packagetab)) {
12124: #no specific packages #how's our extension
12125: if ($key!~/^extension_\Q$extension\E&/) { next; }
12126: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12127: \%metathesekeys);
12128: }
12129:
12130: if (!exists($metaentry{':packages'})
12131: || $packagetab{"import_defaults&extension_$extension"}) {
12132: foreach my $key (keys(%packagetab)) {
12133: #no specific packages well let's get default then
12134: if ($key!~/^default&/) { next; }
12135: &metadata_create_package_def($uri,$key,'default',
12136: \%metathesekeys);
12137: }
12138: }
12139: # are there custom rights to evaluate
12140: if ($metaentry{':copyright'} eq 'custom') {
12141:
12142: #
12143: # Importing a rights file here
12144: #
12145: unless ($depthcount) {
12146: my $location=$metaentry{':customdistributionfile'};
12147: my $dir=$filename;
12148: $dir=~s|[^/]*$||;
12149: $location=&filelocation($dir,$location);
12150: my $rights_metadata =
12151: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12152: $depthcount+1);
12153: foreach my $rights (split(',',$rights_metadata)) {
12154: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12155: $metathesekeys{$rights}=1;
12156: }
12157: }
12158: }
12159: # uniqifiy package listing
12160: my %seen;
12161: my @uniq_packages =
12162: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12163: $metaentry{':packages'} = join(',',@uniq_packages);
12164:
12165: if (($importedresponses) || ($importedparts)) {
12166: if ($importedparts) {
12167: # We had imported parts and need to rebuild partorder
12168: $metaentry{':partorder'}='';
12169: $metathesekeys{'partorder'}=1;
12170: }
12171: if ($importedresponses) {
12172: # We had imported responses and need to rebuil responseorder
12173: $metaentry{':responseorder'}='';
12174: $metathesekeys{'responseorder'}=1;
12175: }
12176: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12177: my $origid = $origfiletagids[$index+1];
12178: if ($origfiletagids[$index] eq 'part') {
12179: # Original part, part of the problem
12180: if ($importedparts) {
12181: $metaentry{':partorder'}.=','.$origid;
12182: }
12183: } elsif ($origfiletagids[$index] eq 'import') {
12184: if ($importedparts) {
12185: # We have imported parts at this position
12186: if ($importedpartids{$origid} ne '') {
12187: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12188: }
12189: }
12190: if ($importedresponses) {
12191: # We have imported responses at this position
12192: if ($importedrespids{$origid} ne '') {
12193: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12194: }
12195: }
12196: } else {
12197: # Original response item, part of the problem
12198: if ($importedresponses) {
12199: $metaentry{':responseorder'}.=','.$origid;
12200: }
12201: }
12202: }
12203: if ($importedparts) {
12204: $metaentry{':partorder'}=~s/^\,//;
12205: }
12206: if ($importedresponses) {
12207: $metaentry{':responseorder'}=~s/^\,//;
12208: }
12209: }
12210: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12211: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12212: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12213: unless ($liburi) {
12214: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12215: }
12216: # this is the end of "was not already recently cached
12217: }
12218: return $metaentry{':'.$what};
12219: }
12220:
12221: sub metadata_create_package_def {
12222: my ($uri,$key,$package,$metathesekeys)=@_;
12223: my ($pack,$name,$subp)=split(/\&/,$key);
12224: if ($subp eq 'default') { next; }
12225:
12226: if (defined($metaentry{':packages'})) {
12227: $metaentry{':packages'}.=','.$package;
12228: } else {
12229: $metaentry{':packages'}=$package;
12230: }
12231: my $value=$packagetab{$key};
12232: my $unikey;
12233: $unikey='parameter_0_'.$name;
12234: $metaentry{':'.$unikey.'.part'}=0;
12235: $$metathesekeys{$unikey}=1;
12236: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12237: $metaentry{':'.$unikey.'.'.$subp}=$value;
12238: }
12239: if (defined($metaentry{':'.$unikey.'.default'})) {
12240: $metaentry{':'.$unikey}=
12241: $metaentry{':'.$unikey.'.default'};
12242: }
12243: }
12244:
12245: sub metadata_generate_part0 {
12246: my ($metadata,$metacache,$uri) = @_;
12247: my %allnames;
12248: foreach my $metakey (keys(%$metadata)) {
12249: if ($metakey=~/^parameter\_(.*)/) {
12250: my $part=$$metacache{':'.$metakey.'.part'};
12251: my $name=$$metacache{':'.$metakey.'.name'};
12252: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12253: $allnames{$name}=$part;
12254: }
12255: }
12256: }
12257: foreach my $name (keys(%allnames)) {
12258: $$metadata{"parameter_0_$name"}=1;
12259: my $key=":parameter_0_$name";
12260: $$metacache{"$key.part"}='0';
12261: $$metacache{"$key.name"}=$name;
12262: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12263: $allnames{$name}.'_'.$name.
12264: '.type'};
12265: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12266: '.display'};
12267: my $expr='[Part: '.$allnames{$name}.']';
12268: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12269: $$metacache{"$key.display"}=$olddis;
12270: }
12271: }
12272:
12273: # ------------------------------------------------------ Devalidate title cache
12274:
12275: sub devalidate_title_cache {
12276: my ($url)=@_;
12277: if (!$env{'request.course.id'}) { return; }
12278: my $symb=&symbread($url);
12279: if (!$symb) { return; }
12280: my $key=$env{'request.course.id'}."\0".$symb;
12281: &devalidate_cache_new('title',$key);
12282: }
12283:
12284: # ------------------------------------------------- Get the title of a course
12285:
12286: sub current_course_title {
12287: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12288: }
12289: # ------------------------------------------------- Get the title of a resource
12290:
12291: sub gettitle {
12292: my $urlsymb=shift;
12293: my $symb=&symbread($urlsymb);
12294: if ($symb) {
12295: my $key=$env{'request.course.id'}."\0".$symb;
12296: my ($result,$cached)=&is_cached_new('title',$key);
12297: if (defined($cached)) {
12298: return $result;
12299: }
12300: my ($map,$resid,$url)=&decode_symb($symb);
12301: my $title='';
12302: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12303: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12304: } else {
12305: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12306: &GDBM_READER(),0640)) {
12307: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12308: $title=$bighash{'title_'.$mapid.'.'.$resid};
12309: untie(%bighash);
12310: }
12311: }
12312: $title=~s/\&colon\;/\:/gs;
12313: if ($title) {
12314: # Remember both $symb and $title for dynamic metadata
12315: $accesshash{$symb.'___crstitle'}=$title;
12316: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12317: # Cache this title and then return it
12318: return &do_cache_new('title',$key,$title,600);
12319: }
12320: $urlsymb=$url;
12321: }
12322: my $title=&metadata($urlsymb,'title');
12323: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12324: return $title;
12325: }
12326:
12327: sub get_slot {
12328: my ($which,$cnum,$cdom)=@_;
12329: if (!$cnum || !$cdom) {
12330: (undef,my $courseid)=&whichuser();
12331: $cdom=$env{'course.'.$courseid.'.domain'};
12332: $cnum=$env{'course.'.$courseid.'.num'};
12333: }
12334: my $key=join("\0",'slots',$cdom,$cnum,$which);
12335: my %slotinfo;
12336: if (exists($remembered{$key})) {
12337: $slotinfo{$which} = $remembered{$key};
12338: } else {
12339: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12340: &Apache::lonhomework::showhash(%slotinfo);
12341: my ($tmp)=keys(%slotinfo);
12342: if ($tmp=~/^error:/) { return (); }
12343: $remembered{$key} = $slotinfo{$which};
12344: }
12345: if (ref($slotinfo{$which}) eq 'HASH') {
12346: return %{$slotinfo{$which}};
12347: }
12348: return $slotinfo{$which};
12349: }
12350:
12351: sub get_reservable_slots {
12352: my ($cnum,$cdom,$uname,$udom) = @_;
12353: my $now = time;
12354: my $reservable_info;
12355: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12356: if (exists($remembered{$key})) {
12357: $reservable_info = $remembered{$key};
12358: } else {
12359: my %resv;
12360: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12361: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12362: $reservable_info = \%resv;
12363: $remembered{$key} = $reservable_info;
12364: }
12365: return $reservable_info;
12366: }
12367:
12368: sub get_course_slots {
12369: my ($cnum,$cdom) = @_;
12370: my $hashid=$cnum.':'.$cdom;
12371: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12372: if (defined($cached)) {
12373: if (ref($result) eq 'HASH') {
12374: return %{$result};
12375: }
12376: } else {
12377: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12378: my ($tmp) = keys(%slots);
12379: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12380: &do_cache_new('allslots',$hashid,\%slots,600);
12381: return %slots;
12382: }
12383: }
12384: return;
12385: }
12386:
12387: sub devalidate_slots_cache {
12388: my ($cnum,$cdom)=@_;
12389: my $hashid=$cnum.':'.$cdom;
12390: &devalidate_cache_new('allslots',$hashid);
12391: }
12392:
12393: sub get_coursechange {
12394: my ($cdom,$cnum) = @_;
12395: if ($cdom eq '' || $cnum eq '') {
12396: return unless ($env{'request.course.id'});
12397: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12398: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12399: }
12400: my $hashid=$cdom.'_'.$cnum;
12401: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12402: if ((defined($cached)) && ($change ne '')) {
12403: return $change;
12404: } else {
12405: my %crshash;
12406: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12407: if ($crshash{'internal.contentchange'} eq '') {
12408: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12409: if ($change eq '') {
12410: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12411: $change = $crshash{'internal.created'};
12412: }
12413: } else {
12414: $change = $crshash{'internal.contentchange'};
12415: }
12416: my $cachetime = 600;
12417: &do_cache_new('crschange',$hashid,$change,$cachetime);
12418: }
12419: return $change;
12420: }
12421:
12422: sub devalidate_coursechange_cache {
12423: my ($cnum,$cdom)=@_;
12424: my $hashid=$cnum.':'.$cdom;
12425: &devalidate_cache_new('crschange',$hashid);
12426: }
12427:
12428: # ------------------------------------------------- Update symbolic store links
12429:
12430: sub symblist {
12431: my ($mapname,%newhash)=@_;
12432: $mapname=&deversion(&declutter($mapname));
12433: my %hash;
12434: if (($env{'request.course.fn'}) && (%newhash)) {
12435: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12436: &GDBM_WRCREAT(),0640)) {
12437: foreach my $url (keys(%newhash)) {
12438: next if ($url eq 'last_known'
12439: && $env{'form.no_update_last_known'});
12440: $hash{declutter($url)}=&encode_symb($mapname,
12441: $newhash{$url}->[1],
12442: $newhash{$url}->[0]);
12443: }
12444: if (untie(%hash)) {
12445: return 'ok';
12446: }
12447: }
12448: }
12449: return 'error';
12450: }
12451:
12452: # --------------------------------------------------------------- Verify a symb
12453:
12454: sub symbverify {
12455: my ($symb,$thisurl,$encstate)=@_;
12456: my $thisfn=$thisurl;
12457: $thisfn=&declutter($thisfn);
12458: # direct jump to resource in page or to a sequence - will construct own symbs
12459: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12460: # check URL part
12461: my ($map,$resid,$url)=&decode_symb($symb);
12462:
12463: unless ($url eq $thisfn) { return 0; }
12464:
12465: $symb=&symbclean($symb);
12466: $thisurl=&deversion($thisurl);
12467: $thisfn=&deversion($thisfn);
12468:
12469: my %bighash;
12470: my $okay=0;
12471:
12472: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12473: &GDBM_READER(),0640)) {
12474: my $noclutter;
12475: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12476: $thisurl =~ s/\?.+$//;
12477: if ($map =~ m{^uploaded/.+\.page$}) {
12478: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12479: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12480: $noclutter = 1;
12481: }
12482: }
12483: my $ids;
12484: if ($noclutter) {
12485: $ids=$bighash{'ids_'.$thisurl};
12486: } else {
12487: $ids=$bighash{'ids_'.&clutter($thisurl)};
12488: }
12489: unless ($ids) {
12490: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12491: $ids=$bighash{$idkey};
12492: }
12493: if ($ids) {
12494: # ------------------------------------------------------------------- Has ID(s)
12495: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12496: $symb =~ s/\?.+$//;
12497: }
12498: foreach my $id (split(/\,/,$ids)) {
12499: my ($mapid,$resid)=split(/\./,$id);
12500: if (
12501: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12502: eq $symb) {
12503: if (ref($encstate)) {
12504: $$encstate = $bighash{'encrypted_'.$id};
12505: }
12506: if (($env{'request.role.adv'}) ||
12507: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12508: ($thisurl eq '/adm/navmaps')) {
12509: $okay=1;
12510: last;
12511: }
12512: }
12513: }
12514: }
12515: untie(%bighash);
12516: }
12517: return $okay;
12518: }
12519:
12520: # --------------------------------------------------------------- Clean-up symb
12521:
12522: sub symbclean {
12523: my $symb=shift;
12524: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12525: # remove version from map
12526: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12527:
12528: # remove version from URL
12529: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12530:
12531: # remove wrapper
12532:
12533: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12534: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12535: return $symb;
12536: }
12537:
12538: # ---------------------------------------------- Split symb to find map and url
12539:
12540: sub encode_symb {
12541: my ($map,$resid,$url)=@_;
12542: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12543: }
12544:
12545: sub decode_symb {
12546: my $symb=shift;
12547: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12548: my ($map,$resid,$url)=split(/___/,$symb);
12549: return (&fixversion($map),$resid,&fixversion($url));
12550: }
12551:
12552: sub fixversion {
12553: my $fn=shift;
12554: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12555: my %bighash;
12556: my $uri=&clutter($fn);
12557: my $key=$env{'request.course.id'}.'_'.$uri;
12558: # is this cached?
12559: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12560: if (defined($cached)) { return $result; }
12561: # unfortunately not cached, or expired
12562: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12563: &GDBM_READER(),0640)) {
12564: if ($bighash{'version_'.$uri}) {
12565: my $version=$bighash{'version_'.$uri};
12566: unless (($version eq 'mostrecent') ||
12567: ($version==&getversion($uri))) {
12568: $uri=~s/\.(\w+)$/\.$version\.$1/;
12569: }
12570: }
12571: untie %bighash;
12572: }
12573: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12574: }
12575:
12576: sub deversion {
12577: my $url=shift;
12578: $url=~s/\.\d+\.(\w+)$/\.$1/;
12579: return $url;
12580: }
12581:
12582: # ------------------------------------------------------ Return symb list entry
12583:
12584: sub symbread {
12585: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12586: my $cache_str='request.symbread.cached.'.$thisfn;
12587: if (defined($env{$cache_str})) {
12588: if ($ignorecachednull) {
12589: return $env{$cache_str} unless ($env{$cache_str} eq '');
12590: } else {
12591: return $env{$cache_str};
12592: }
12593: }
12594: # no filename provided? try from environment
12595: unless ($thisfn) {
12596: if ($env{'request.symb'}) {
12597: return $env{$cache_str}=&symbclean($env{'request.symb'});
12598: }
12599: $thisfn=$env{'request.filename'};
12600: }
12601: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12602: # is that filename actually a symb? Verify, clean, and return
12603: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12604: if (&symbverify($thisfn,$1)) {
12605: return $env{$cache_str}=&symbclean($thisfn);
12606: }
12607: }
12608: $thisfn=declutter($thisfn);
12609: my %hash;
12610: my %bighash;
12611: my $syval='';
12612: if (($env{'request.course.fn'}) && ($thisfn)) {
12613: my $targetfn = $thisfn;
12614: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12615: $targetfn = 'adm/wrapper/'.$thisfn;
12616: }
12617: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12618: $targetfn=$1;
12619: }
12620: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12621: &GDBM_READER(),0640)) {
12622: $syval=$hash{$targetfn};
12623: untie(%hash);
12624: }
12625: # ---------------------------------------------------------- There was an entry
12626: if ($syval) {
12627: #unless ($syval=~/\_\d+$/) {
12628: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12629: #&appenv({'request.ambiguous' => $thisfn});
12630: #return $env{$cache_str}='';
12631: #}
12632: #$syval.=$1;
12633: #}
12634: } else {
12635: # ------------------------------------------------------- Was not in symb table
12636: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12637: &GDBM_READER(),0640)) {
12638: # ---------------------------------------------- Get ID(s) for current resource
12639: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12640: unless ($ids) {
12641: $ids=$bighash{'ids_/'.$thisfn};
12642: }
12643: unless ($ids) {
12644: # alias?
12645: $ids=$bighash{'mapalias_'.$thisfn};
12646: }
12647: if ($ids) {
12648: # ------------------------------------------------------------------- Has ID(s)
12649: my @possibilities=split(/\,/,$ids);
12650: if ($#possibilities==0) {
12651: # ----------------------------------------------- There is only one possibility
12652: my ($mapid,$resid)=split(/\./,$ids);
12653: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12654: $resid,$thisfn);
12655: if (ref($possibles) eq 'HASH') {
12656: $possibles->{$syval} = 1;
12657: }
12658: if ($checkforblock) {
12659: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12660: if (@blockers) {
12661: $syval = '';
12662: return;
12663: }
12664: }
12665: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12666: # ------------------------------------------ There is more than one possibility
12667: my $realpossible=0;
12668: foreach my $id (@possibilities) {
12669: my $file=$bighash{'src_'.$id};
12670: my $canaccess;
12671: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12672: $canaccess = 1;
12673: } else {
12674: $canaccess = &allowed('bre',$file);
12675: }
12676: if ($canaccess) {
12677: my ($mapid,$resid)=split(/\./,$id);
12678: if ($bighash{'map_type_'.$mapid} ne 'page') {
12679: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12680: $resid,$thisfn);
12681: if (ref($possibles) eq 'HASH') {
12682: $possibles->{$syval} = 1;
12683: }
12684: if ($checkforblock) {
12685: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12686: unless (@blockers > 0) {
12687: $syval = $poss_syval;
12688: $realpossible++;
12689: }
12690: } else {
12691: $syval = $poss_syval;
12692: $realpossible++;
12693: }
12694: }
12695: }
12696: }
12697: if ($realpossible!=1) { $syval=''; }
12698: } else {
12699: $syval='';
12700: }
12701: }
12702: untie(%bighash);
12703: }
12704: }
12705: if ($syval) {
12706: return $env{$cache_str}=$syval;
12707: }
12708: }
12709: &appenv({'request.ambiguous' => $thisfn});
12710: return $env{$cache_str}='';
12711: }
12712:
12713: # ---------------------------------------------------------- Return random seed
12714:
12715: sub numval {
12716: my $txt=shift;
12717: $txt=~tr/A-J/0-9/;
12718: $txt=~tr/a-j/0-9/;
12719: $txt=~tr/K-T/0-9/;
12720: $txt=~tr/k-t/0-9/;
12721: $txt=~tr/U-Z/0-5/;
12722: $txt=~tr/u-z/0-5/;
12723: $txt=~s/\D//g;
12724: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12725: return int($txt);
12726: }
12727:
12728: sub numval2 {
12729: my $txt=shift;
12730: $txt=~tr/A-J/0-9/;
12731: $txt=~tr/a-j/0-9/;
12732: $txt=~tr/K-T/0-9/;
12733: $txt=~tr/k-t/0-9/;
12734: $txt=~tr/U-Z/0-5/;
12735: $txt=~tr/u-z/0-5/;
12736: $txt=~s/\D//g;
12737: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12738: my $total;
12739: foreach my $val (@txts) { $total+=$val; }
12740: if ($_64bit) { if ($total > 2**32) { return -1; } }
12741: return int($total);
12742: }
12743:
12744: sub numval3 {
12745: use integer;
12746: my $txt=shift;
12747: $txt=~tr/A-J/0-9/;
12748: $txt=~tr/a-j/0-9/;
12749: $txt=~tr/K-T/0-9/;
12750: $txt=~tr/k-t/0-9/;
12751: $txt=~tr/U-Z/0-5/;
12752: $txt=~tr/u-z/0-5/;
12753: $txt=~s/\D//g;
12754: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12755: my $total;
12756: foreach my $val (@txts) { $total+=$val; }
12757: if ($_64bit) { $total=(($total<<32)>>32); }
12758: return $total;
12759: }
12760:
12761: sub digest {
12762: my ($data)=@_;
12763: my $digest=&Digest::MD5::md5($data);
12764: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12765: my ($e,$f);
12766: {
12767: use integer;
12768: $e=($a+$b);
12769: $f=($c+$d);
12770: if ($_64bit) {
12771: $e=(($e<<32)>>32);
12772: $f=(($f<<32)>>32);
12773: }
12774: }
12775: if (wantarray) {
12776: return ($e,$f);
12777: } else {
12778: my $g;
12779: {
12780: use integer;
12781: $g=($e+$f);
12782: if ($_64bit) {
12783: $g=(($g<<32)>>32);
12784: }
12785: }
12786: return $g;
12787: }
12788: }
12789:
12790: sub latest_rnd_algorithm_id {
12791: return '64bit5';
12792: }
12793:
12794: sub get_rand_alg {
12795: my ($courseid)=@_;
12796: if (!$courseid) { $courseid=(&whichuser())[1]; }
12797: if ($courseid) {
12798: return $env{"course.$courseid.rndseed"};
12799: }
12800: return &latest_rnd_algorithm_id();
12801: }
12802:
12803: sub validCODE {
12804: my ($CODE)=@_;
12805: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12806: return 0;
12807: }
12808:
12809: sub getCODE {
12810: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12811: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12812: defined($Apache::lonhomework::parsing_a_task) ) &&
12813: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12814: return $Apache::lonhomework::history{'resource.CODE'};
12815: }
12816: return undef;
12817: }
12818: #
12819: # Determines the random seed for a specific context:
12820: #
12821: # parameters:
12822: # symb - in course context the symb for the seed.
12823: # course_id - The course id of the form domain_coursenum.
12824: # domain - Domain for the user.
12825: # course - Course for the user.
12826: # cenv - environment of the course.
12827: #
12828: # NOTE:
12829: # All parameters are picked out of the environment if missing
12830: # or not defined.
12831: # If a symb cannot be determined the current time is used instead.
12832: #
12833: # For a given well defined symb, courside, domain, username,
12834: # and course environment, the seed is reproducible.
12835: #
12836: sub rndseed {
12837: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12838: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12839: if (!defined($symb)) {
12840: unless ($symb=$wsymb) { return time; }
12841: }
12842: if (!defined $courseid) {
12843: $courseid=$wcourseid;
12844: }
12845: if (!defined $domain) { $domain=$wdomain; }
12846: if (!defined $username) { $username=$wusername }
12847:
12848: my $which;
12849: if (defined($cenv->{'rndseed'})) {
12850: $which = $cenv->{'rndseed'};
12851: } else {
12852: $which =&get_rand_alg($courseid);
12853: }
12854: if (defined(&getCODE())) {
12855:
12856: if ($which eq '64bit5') {
12857: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12858: } elsif ($which eq '64bit4') {
12859: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12860: } else {
12861: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12862: }
12863: } elsif ($which eq '64bit5') {
12864: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12865: } elsif ($which eq '64bit4') {
12866: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12867: } elsif ($which eq '64bit3') {
12868: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12869: } elsif ($which eq '64bit2') {
12870: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12871: } elsif ($which eq '64bit') {
12872: return &rndseed_64bit($symb,$courseid,$domain,$username);
12873: }
12874: return &rndseed_32bit($symb,$courseid,$domain,$username);
12875: }
12876:
12877: sub rndseed_32bit {
12878: my ($symb,$courseid,$domain,$username)=@_;
12879: {
12880: use integer;
12881: my $symbchck=unpack("%32C*",$symb) << 27;
12882: my $symbseed=numval($symb) << 22;
12883: my $namechck=unpack("%32C*",$username) << 17;
12884: my $nameseed=numval($username) << 12;
12885: my $domainseed=unpack("%32C*",$domain) << 7;
12886: my $courseseed=unpack("%32C*",$courseid);
12887: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12888: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12889: #&logthis("rndseed :$num:$symb");
12890: if ($_64bit) { $num=(($num<<32)>>32); }
12891: return $num;
12892: }
12893: }
12894:
12895: sub rndseed_64bit {
12896: my ($symb,$courseid,$domain,$username)=@_;
12897: {
12898: use integer;
12899: my $symbchck=unpack("%32S*",$symb) << 21;
12900: my $symbseed=numval($symb) << 10;
12901: my $namechck=unpack("%32S*",$username);
12902:
12903: my $nameseed=numval($username) << 21;
12904: my $domainseed=unpack("%32S*",$domain) << 10;
12905: my $courseseed=unpack("%32S*",$courseid);
12906:
12907: my $num1=$symbchck+$symbseed+$namechck;
12908: my $num2=$nameseed+$domainseed+$courseseed;
12909: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12910: #&logthis("rndseed :$num:$symb");
12911: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12912: return "$num1,$num2";
12913: }
12914: }
12915:
12916: sub rndseed_64bit2 {
12917: my ($symb,$courseid,$domain,$username)=@_;
12918: {
12919: use integer;
12920: # strings need to be an even # of cahracters long, it it is odd the
12921: # last characters gets thrown away
12922: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12923: my $symbseed=numval($symb) << 10;
12924: my $namechck=unpack("%32S*",$username.' ');
12925:
12926: my $nameseed=numval($username) << 21;
12927: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12928: my $courseseed=unpack("%32S*",$courseid.' ');
12929:
12930: my $num1=$symbchck+$symbseed+$namechck;
12931: my $num2=$nameseed+$domainseed+$courseseed;
12932: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12933: #&logthis("rndseed :$num:$symb");
12934: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12935: return "$num1,$num2";
12936: }
12937: }
12938:
12939: sub rndseed_64bit3 {
12940: my ($symb,$courseid,$domain,$username)=@_;
12941: {
12942: use integer;
12943: # strings need to be an even # of cahracters long, it it is odd the
12944: # last characters gets thrown away
12945: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12946: my $symbseed=numval2($symb) << 10;
12947: my $namechck=unpack("%32S*",$username.' ');
12948:
12949: my $nameseed=numval2($username) << 21;
12950: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12951: my $courseseed=unpack("%32S*",$courseid.' ');
12952:
12953: my $num1=$symbchck+$symbseed+$namechck;
12954: my $num2=$nameseed+$domainseed+$courseseed;
12955: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12956: #&logthis("rndseed :$num1:$num2:$_64bit");
12957: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12958:
12959: return "$num1:$num2";
12960: }
12961: }
12962:
12963: sub rndseed_64bit4 {
12964: my ($symb,$courseid,$domain,$username)=@_;
12965: {
12966: use integer;
12967: # strings need to be an even # of cahracters long, it it is odd the
12968: # last characters gets thrown away
12969: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12970: my $symbseed=numval3($symb) << 10;
12971: my $namechck=unpack("%32S*",$username.' ');
12972:
12973: my $nameseed=numval3($username) << 21;
12974: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12975: my $courseseed=unpack("%32S*",$courseid.' ');
12976:
12977: my $num1=$symbchck+$symbseed+$namechck;
12978: my $num2=$nameseed+$domainseed+$courseseed;
12979: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12980: #&logthis("rndseed :$num1:$num2:$_64bit");
12981: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12982:
12983: return "$num1:$num2";
12984: }
12985: }
12986:
12987: sub rndseed_64bit5 {
12988: my ($symb,$courseid,$domain,$username)=@_;
12989: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12990: return "$num1:$num2";
12991: }
12992:
12993: sub rndseed_CODE_64bit {
12994: my ($symb,$courseid,$domain,$username)=@_;
12995: {
12996: use integer;
12997: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12998: my $symbseed=numval2($symb);
12999: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13000: my $CODEseed=numval(&getCODE());
13001: my $courseseed=unpack("%32S*",$courseid.' ');
13002: my $num1=$symbseed+$CODEchck;
13003: my $num2=$CODEseed+$courseseed+$symbchck;
13004: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13005: #&logthis("rndseed :$num1:$num2:$symb");
13006: if ($_64bit) { $num1=(($num1<<32)>>32); }
13007: if ($_64bit) { $num2=(($num2<<32)>>32); }
13008: return "$num1:$num2";
13009: }
13010: }
13011:
13012: sub rndseed_CODE_64bit4 {
13013: my ($symb,$courseid,$domain,$username)=@_;
13014: {
13015: use integer;
13016: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13017: my $symbseed=numval3($symb);
13018: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13019: my $CODEseed=numval3(&getCODE());
13020: my $courseseed=unpack("%32S*",$courseid.' ');
13021: my $num1=$symbseed+$CODEchck;
13022: my $num2=$CODEseed+$courseseed+$symbchck;
13023: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13024: #&logthis("rndseed :$num1:$num2:$symb");
13025: if ($_64bit) { $num1=(($num1<<32)>>32); }
13026: if ($_64bit) { $num2=(($num2<<32)>>32); }
13027: return "$num1:$num2";
13028: }
13029: }
13030:
13031: sub rndseed_CODE_64bit5 {
13032: my ($symb,$courseid,$domain,$username)=@_;
13033: my $code = &getCODE();
13034: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13035: return "$num1:$num2";
13036: }
13037:
13038: sub setup_random_from_rndseed {
13039: my ($rndseed)=@_;
13040: if ($rndseed =~/([,:])/) {
13041: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13042: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13043: &Math::Random::random_set_seed_from_phrase($rndseed);
13044: } else {
13045: &Math::Random::random_set_seed($num1,$num2);
13046: }
13047: } else {
13048: &Math::Random::random_set_seed_from_phrase($rndseed);
13049: }
13050: }
13051:
13052: sub latest_receipt_algorithm_id {
13053: return 'receipt3';
13054: }
13055:
13056: sub recunique {
13057: my $fucourseid=shift;
13058: my $unique;
13059: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13060: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13061: $unique=$env{"course.$fucourseid.internal.encseed"};
13062: } else {
13063: $unique=$perlvar{'lonReceipt'};
13064: }
13065: return unpack("%32C*",$unique);
13066: }
13067:
13068: sub recprefix {
13069: my $fucourseid=shift;
13070: my $prefix;
13071: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13072: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13073: $prefix=$env{"course.$fucourseid.internal.encpref"};
13074: } else {
13075: $prefix=$perlvar{'lonHostID'};
13076: }
13077: return unpack("%32C*",$prefix);
13078: }
13079:
13080: sub ireceipt {
13081: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13082:
13083: my $return =&recprefix($fucourseid).'-';
13084:
13085: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13086: $env{'request.state'} eq 'construct') {
13087: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13088: return $return;
13089: }
13090:
13091: my $cuname=unpack("%32C*",$funame);
13092: my $cudom=unpack("%32C*",$fudom);
13093: my $cucourseid=unpack("%32C*",$fucourseid);
13094: my $cusymb=unpack("%32C*",$fusymb);
13095: my $cunique=&recunique($fucourseid);
13096: my $cpart=unpack("%32S*",$part);
13097: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13098:
13099: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13100:
13101: $return.= ($cunique%$cuname+
13102: $cunique%$cudom+
13103: $cusymb%$cuname+
13104: $cusymb%$cudom+
13105: $cucourseid%$cuname+
13106: $cucourseid%$cudom+
13107: $cpart%$cuname+
13108: $cpart%$cudom);
13109: } else {
13110: $return.= ($cunique%$cuname+
13111: $cunique%$cudom+
13112: $cusymb%$cuname+
13113: $cusymb%$cudom+
13114: $cucourseid%$cuname+
13115: $cucourseid%$cudom);
13116: }
13117: return $return;
13118: }
13119:
13120: sub receipt {
13121: my ($part)=@_;
13122: my ($symb,$courseid,$domain,$name) = &whichuser();
13123: return &ireceipt($name,$domain,$courseid,$symb,$part);
13124: }
13125:
13126: sub whichuser {
13127: my ($passedsymb)=@_;
13128: my ($symb,$courseid,$domain,$name,$publicuser);
13129: if (defined($env{'form.grade_symb'})) {
13130: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13131: my $allowed=&allowed('vgr',$tmp_courseid);
13132: if (!$allowed &&
13133: exists($env{'request.course.sec'}) &&
13134: $env{'request.course.sec'} !~ /^\s*$/) {
13135: $allowed=&allowed('vgr',$tmp_courseid.
13136: '/'.$env{'request.course.sec'});
13137: }
13138: if ($allowed) {
13139: ($symb)=&get_env_multiple('form.grade_symb');
13140: $courseid=$tmp_courseid;
13141: ($domain)=&get_env_multiple('form.grade_domain');
13142: ($name)=&get_env_multiple('form.grade_username');
13143: return ($symb,$courseid,$domain,$name,$publicuser);
13144: }
13145: }
13146: if (!$passedsymb) {
13147: $symb=&symbread();
13148: } else {
13149: $symb=$passedsymb;
13150: }
13151: $courseid=$env{'request.course.id'};
13152: $domain=$env{'user.domain'};
13153: $name=$env{'user.name'};
13154: if ($name eq 'public' && $domain eq 'public') {
13155: if (!defined($env{'form.username'})) {
13156: $env{'form.username'}.=time.rand(10000000);
13157: }
13158: $name.=$env{'form.username'};
13159: }
13160: return ($symb,$courseid,$domain,$name,$publicuser);
13161:
13162: }
13163:
13164: # ------------------------------------------------------------ Serves up a file
13165: # returns either the contents of the file or
13166: # -1 if the file doesn't exist
13167: #
13168: # if the target is a file that was uploaded via DOCS,
13169: # a check will be made to see if a current copy exists on the local server,
13170: # if it does this will be served, otherwise a copy will be retrieved from
13171: # the home server for the course and stored in /home/httpd/html/userfiles on
13172: # the local server.
13173:
13174: sub getfile {
13175: my ($file) = @_;
13176: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13177: &repcopy($file);
13178: return &readfile($file);
13179: }
13180:
13181: sub repcopy_userfile {
13182: my ($file)=@_;
13183: my $londocroot = $perlvar{'lonDocRoot'};
13184: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13185: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13186: my ($cdom,$cnum,$filename) =
13187: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13188: my $uri="/uploaded/$cdom/$cnum/$filename";
13189: if (-e "$file") {
13190: # we already have a local copy, check it out
13191: my @fileinfo = stat($file);
13192: my $rtncode;
13193: my $info;
13194: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13195: if ($lwpresp ne 'ok') {
13196: # there is no such file anymore, even though we had a local copy
13197: if ($rtncode eq '404') {
13198: unlink($file);
13199: }
13200: return -1;
13201: }
13202: if ($info < $fileinfo[9]) {
13203: # nice, the file we have is up-to-date, just say okay
13204: return 'ok';
13205: } else {
13206: # the file is outdated, get rid of it
13207: unlink($file);
13208: }
13209: }
13210: # one way or the other, at this point, we don't have the file
13211: # construct the correct path for the file
13212: my @parts = ($cdom,$cnum);
13213: if ($filename =~ m|^(.+)/[^/]+$|) {
13214: push @parts, split(/\//,$1);
13215: }
13216: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13217: foreach my $part (@parts) {
13218: $path .= '/'.$part;
13219: if (!-e $path) {
13220: mkdir($path,0770);
13221: }
13222: }
13223: # now the path exists for sure
13224: # get a user agent
13225: my $transferfile=$file.'.in.transfer';
13226: # FIXME: this should flock
13227: if (-e $transferfile) { return 'ok'; }
13228: my $request;
13229: $uri=~s/^\///;
13230: my $homeserver = &homeserver($cnum,$cdom);
13231: my $protocol = $protocol{$homeserver};
13232: $protocol = 'http' if ($protocol ne 'https');
13233: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
13234: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13235: # did it work?
13236: if ($response->is_error()) {
13237: unlink($transferfile);
13238: &logthis("Userfile repcopy failed for $uri");
13239: return -1;
13240: }
13241: # worked, rename the transfer file
13242: rename($transferfile,$file);
13243: return 'ok';
13244: }
13245:
13246: sub tokenwrapper {
13247: my $uri=shift;
13248: $uri=~s|^https?\://([^/]+)||;
13249: $uri=~s|^/||;
13250: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13251: my $token=$1;
13252: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13253: if ($udom && $uname && $file) {
13254: $file=~s|(\?\.*)*$||;
13255: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13256: my $homeserver = &homeserver($uname,$udom);
13257: my $protocol = $protocol{$homeserver};
13258: $protocol = 'http' if ($protocol ne 'https');
13259: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
13260: (($uri=~/\?/)?'&':'?').'token='.$token.
13261: '&tokenissued='.$perlvar{'lonHostID'};
13262: } else {
13263: return '/adm/notfound.html';
13264: }
13265: }
13266:
13267: # call with reqtype HEAD: get last modification time
13268: # call with reqtype GET: get the file contents
13269: # Do not call this with reqtype GET for large files! It loads everything into memory
13270: #
13271: sub getuploaded {
13272: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13273: $uri=~s/^\///;
13274: my $homeserver = &homeserver($cnum,$cdom);
13275: my $protocol = $protocol{$homeserver};
13276: $protocol = 'http' if ($protocol ne 'https');
13277: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13278: my $request=new HTTP::Request($reqtype,$uri);
13279: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13280: $$rtncode = $response->code;
13281: if (! $response->is_success()) {
13282: return 'failed';
13283: }
13284: if ($reqtype eq 'HEAD') {
13285: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13286: } elsif ($reqtype eq 'GET') {
13287: $$info = $response->content;
13288: }
13289: return 'ok';
13290: }
13291:
13292: sub readfile {
13293: my $file = shift;
13294: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13295: my $fh;
13296: open($fh,"<",$file);
13297: my $a='';
13298: while (my $line = <$fh>) { $a .= $line; }
13299: return $a;
13300: }
13301:
13302: sub filelocation {
13303: my ($dir,$file) = @_;
13304: my $location;
13305: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13306:
13307: if ($file =~ m-^/adm/-) {
13308: $file=~s-^/adm/wrapper/-/-;
13309: $file=~s-^/adm/coursedocs/showdoc/-/-;
13310: }
13311:
13312: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13313: $location = $file;
13314: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13315: my ($udom,$uname,$filename)=
13316: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13317: my $home=&homeserver($uname,$udom);
13318: my $is_me=0;
13319: my @ids=¤t_machine_ids();
13320: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13321: if ($is_me) {
13322: $location=propath($udom,$uname).'/userfiles/'.$filename;
13323: } else {
13324: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13325: $udom.'/'.$uname.'/'.$filename;
13326: }
13327: } elsif ($file =~ m-^/adm/-) {
13328: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13329: } else {
13330: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13331: $file=~s:^/(res|priv)/:/:;
13332: my $space=$1;
13333: if ( !( $file =~ m:^/:) ) {
13334: $location = $dir. '/'.$file;
13335: } else {
13336: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13337: }
13338: }
13339: $location=~s://+:/:g; # remove duplicate /
13340: while ($location=~m{/\.\./}) {
13341: if ($location =~ m{/[^/]+/\.\./}) {
13342: $location=~ s{/[^/]+/\.\./}{/}g;
13343: } else {
13344: $location=~ s{/\.\./}{/}g;
13345: }
13346: } #remove dir/..
13347: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13348: return $location;
13349: }
13350:
13351: sub hreflocation {
13352: my ($dir,$file)=@_;
13353: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13354: $file=filelocation($dir,$file);
13355: } elsif ($file=~m-^/adm/-) {
13356: $file=~s-^/adm/wrapper/-/-;
13357: $file=~s-^/adm/coursedocs/showdoc/-/-;
13358: }
13359: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13360: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13361: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13362: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13363: {/uploaded/$1/$2/}x;
13364: }
13365: if ($file=~ m{^/userfiles/}) {
13366: $file =~ s{^/userfiles/}{/uploaded/};
13367: }
13368: return $file;
13369: }
13370:
13371:
13372:
13373:
13374:
13375: sub current_machine_domains {
13376: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13377: }
13378:
13379: sub machine_domains {
13380: my ($hostname) = @_;
13381: my @domains;
13382: my %hostname = &all_hostnames();
13383: while( my($id, $name) = each(%hostname)) {
13384: # &logthis("-$id-$name-$hostname-");
13385: if ($hostname eq $name) {
13386: push(@domains,&host_domain($id));
13387: }
13388: }
13389: return @domains;
13390: }
13391:
13392: sub current_machine_ids {
13393: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13394: }
13395:
13396: sub machine_ids {
13397: my ($hostname) = @_;
13398: $hostname ||= &hostname($perlvar{'lonHostID'});
13399: my @ids;
13400: my %name_to_host = &all_names();
13401: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13402: return @{ $name_to_host{$hostname} };
13403: }
13404: return;
13405: }
13406:
13407: sub additional_machine_domains {
13408: my @domains;
13409: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13410: while( my $line = <$fh>) {
13411: $line =~ s/\s//g;
13412: push(@domains,$line);
13413: }
13414: return @domains;
13415: }
13416:
13417: sub default_login_domain {
13418: my $domain = $perlvar{'lonDefDomain'};
13419: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13420: foreach my $posdom (¤t_machine_domains(),
13421: &additional_machine_domains()) {
13422: if (lc($posdom) eq lc($testdomain)) {
13423: $domain=$posdom;
13424: last;
13425: }
13426: }
13427: return $domain;
13428: }
13429:
13430: # ------------------------------------------------------------- Declutters URLs
13431:
13432: sub declutter {
13433: my $thisfn=shift;
13434: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13435: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13436: $thisfn=~s{^/home/httpd/html}{};
13437: }
13438: $thisfn=~s/^\///;
13439: $thisfn=~s|^adm/wrapper/||;
13440: $thisfn=~s|^adm/coursedocs/showdoc/||;
13441: $thisfn=~s/^res\///;
13442: $thisfn=~s/^priv\///;
13443: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13444: $thisfn=~s/\?.+$//;
13445: }
13446: return $thisfn;
13447: }
13448:
13449: # ------------------------------------------------------------- Clutter up URLs
13450:
13451: sub clutter {
13452: my $thisfn='/'.&declutter(shift);
13453: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13454: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13455: $thisfn='/res'.$thisfn;
13456: }
13457: if ($thisfn !~m|^/adm|) {
13458: if ($thisfn =~ m|^/ext/|) {
13459: $thisfn='/adm/wrapper'.$thisfn;
13460: } else {
13461: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13462: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13463: if ($embstyle eq 'ssi'
13464: || ($embstyle eq 'hdn')
13465: || ($embstyle eq 'rat')
13466: || ($embstyle eq 'prv')
13467: || ($embstyle eq 'ign')) {
13468: #do nothing with these
13469: } elsif (($embstyle eq 'img')
13470: || ($embstyle eq 'emb')
13471: || ($embstyle eq 'wrp')) {
13472: $thisfn='/adm/wrapper'.$thisfn;
13473: } elsif ($embstyle eq 'unk'
13474: && $thisfn!~/\.(sequence|page)$/) {
13475: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13476: } else {
13477: # &logthis("Got a blank emb style");
13478: }
13479: }
13480: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13481: $thisfn='/adm/wrapper'.$thisfn;
13482: }
13483: return $thisfn;
13484: }
13485:
13486: sub clutter_with_no_wrapper {
13487: my $uri = &clutter(shift);
13488: if ($uri =~ m-^/adm/-) {
13489: $uri =~ s-^/adm/wrapper/-/-;
13490: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13491: }
13492: return $uri;
13493: }
13494:
13495: sub freeze_escape {
13496: my ($value)=@_;
13497: if (ref($value)) {
13498: $value=&nfreeze($value);
13499: return '__FROZEN__'.&escape($value);
13500: }
13501: return &escape($value);
13502: }
13503:
13504:
13505: sub thaw_unescape {
13506: my ($value)=@_;
13507: if ($value =~ /^__FROZEN__/) {
13508: substr($value,0,10,undef);
13509: $value=&unescape($value);
13510: return &thaw($value);
13511: }
13512: return &unescape($value);
13513: }
13514:
13515: sub correct_line_ends {
13516: my ($result)=@_;
13517: $$result =~s/\r\n/\n/mg;
13518: $$result =~s/\r/\n/mg;
13519: }
13520: # ================================================================ Main Program
13521:
13522: sub goodbye {
13523: &logthis("Starting Shut down");
13524: #not converted to using infrastruture and probably shouldn't be
13525: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13526: #converted
13527: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13528: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13529: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13530: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13531: #1.1 only
13532: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13533: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13534: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13535: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13536: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13537: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13538: &logthis(sprintf("%-20s is %s",'hits',$hits));
13539: &flushcourselogs();
13540: &logthis("Shutting down");
13541: }
13542:
13543: sub get_dns {
13544: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13545: if (!$ignore_cache) {
13546: my ($content,$cached)=
13547: &Apache::lonnet::is_cached_new('dns',$url);
13548: if ($cached) {
13549: &$func($content,$hashref);
13550: return;
13551: }
13552: }
13553:
13554: my %alldns;
13555: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13556: foreach my $dns (<$config>) {
13557: next if ($dns !~ /^\^(\S*)/x);
13558: my $line = $1;
13559: my ($host,$protocol) = split(/:/,$line);
13560: if ($protocol ne 'https') {
13561: $protocol = 'http';
13562: }
13563: $alldns{$host} = $protocol;
13564: }
13565: close($config);
13566: }
13567: while (%alldns) {
13568: my ($dns) = sort { $b cmp $a } keys(%alldns);
13569: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13570: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13571: delete($alldns{$dns});
13572: next if ($response->is_error());
13573: if ($url eq '/adm/dns/loncapaCRL') {
13574: return &$func($response);
13575: } else {
13576: my @content = split("\n",$response->content);
13577: unless ($nocache) {
13578: &do_cache_new('dns',$url,\@content,30*24*60*60);
13579: }
13580: &$func(\@content,$hashref);
13581: return;
13582: }
13583: }
13584: my $which = (split('/',$url,4))[3];
13585: if ($which eq 'loncapaCRL') {
13586: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13587: if (-e $diskfile) {
13588: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13589: } else {
13590: &logthis("unable to contact DNS, no on disk file $diskfile available");
13591: }
13592: } else {
13593: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13594: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13595: my @content = <$config>;
13596: close($config);
13597: &$func(\@content,$hashref);
13598: }
13599: }
13600: return;
13601: }
13602:
13603: # ------------------------------------------------------Get DNS checksums file
13604: sub parse_dns_checksums_tab {
13605: my ($lines,$hashref) = @_;
13606: my $lonhost = $perlvar{'lonHostID'};
13607: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13608: my $loncaparev = &get_server_loncaparev($machine_dom);
13609: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13610: my $webconfdir = '/etc/httpd/conf';
13611: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13612: $webconfdir = '/etc/apache2';
13613: } elsif ($distro =~ /^sles(\d+)$/) {
13614: if ($1 >= 10) {
13615: $webconfdir = '/etc/apache2';
13616: }
13617: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13618: if ($1 >= 10.0) {
13619: $webconfdir = '/etc/apache2';
13620: }
13621: }
13622: my ($release,$timestamp) = split(/\-/,$loncaparev);
13623: my (%chksum,%revnum);
13624: if (ref($lines) eq 'ARRAY') {
13625: chomp(@{$lines});
13626: my $version = shift(@{$lines});
13627: if ($version eq $release) {
13628: foreach my $line (@{$lines}) {
13629: my ($file,$version,$shasum) = split(/,/,$line);
13630: if ($file =~ m{^/etc/httpd/conf}) {
13631: if ($webconfdir eq '/etc/apache2') {
13632: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13633: }
13634: }
13635: $chksum{$file} = $shasum;
13636: $revnum{$file} = $version;
13637: }
13638: if (ref($hashref) eq 'HASH') {
13639: %{$hashref} = (
13640: sums => \%chksum,
13641: versions => \%revnum,
13642: );
13643: }
13644: }
13645: }
13646: return;
13647: }
13648:
13649: sub fetch_dns_checksums {
13650: my %checksums;
13651: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13652: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13653: my ($release,$timestamp) = split(/\-/,$loncaparev);
13654: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13655: \%checksums);
13656: return \%checksums;
13657: }
13658:
13659: sub fetch_crl_pemfile {
13660: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13661: }
13662:
13663: sub save_crl_pem {
13664: my ($response) = @_;
13665: my ($msg,$hadchanges);
13666: if (ref($response)) {
13667: my $now = time;
13668: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13669: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13670: if (open(my $fh,'>',"$tmpcrl")) {
13671: print $fh $response->content;
13672: close($fh);
13673: if (-e $lonca) {
13674: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13675: my $check = <PIPE>;
13676: close(PIPE);
13677: chomp($check);
13678: if ($check eq 'verify OK') {
13679: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13680: my $backup;
13681: if (-e $dest) {
13682: if (&File::Copy::move($dest,"$dest.bak")) {
13683: $backup = 'ok';
13684: }
13685: }
13686: if (&File::Copy::move($tmpcrl,$dest)) {
13687: $msg = 'ok';
13688: if ($backup) {
13689: my (%oldnums,%newnums);
13690: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13691: while (<PIPE>) {
13692: $oldnums{(split(/:/))[1]} = 1;
13693: }
13694: close(PIPE);
13695: }
13696: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13697: while(<PIPE>) {
13698: $newnums{(split(/:/))[1]} = 1;
13699: }
13700: close(PIPE);
13701: }
13702: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13703: unless (exists($oldnums{$key})) {
13704: $hadchanges = 1;
13705: last;
13706: }
13707: }
13708: unless ($hadchanges) {
13709: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13710: unless (exists($newnums{$key})) {
13711: $hadchanges = 1;
13712: last;
13713: }
13714: }
13715: }
13716: }
13717: }
13718: } else {
13719: unlink($tmpcrl);
13720: }
13721: } else {
13722: unlink($tmpcrl);
13723: }
13724: } else {
13725: unlink($tmpcrl);
13726: }
13727: }
13728: }
13729: return ($msg,$hadchanges);
13730: }
13731:
13732: # ------------------------------------------------------------ Read domain file
13733: {
13734: my $loaded;
13735: my %domain;
13736:
13737: sub parse_domain_tab {
13738: my ($lines) = @_;
13739: foreach my $line (@$lines) {
13740: next if ($line =~ /^(\#|\s*$ )/x);
13741:
13742: chomp($line);
13743: my ($name,@elements) = split(/:/,$line,9);
13744: my %this_domain;
13745: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13746: 'lang_def', 'city', 'longi', 'lati',
13747: 'primary') {
13748: $this_domain{$field} = shift(@elements);
13749: }
13750: $domain{$name} = \%this_domain;
13751: }
13752: }
13753:
13754: sub reset_domain_info {
13755: undef($loaded);
13756: undef(%domain);
13757: }
13758:
13759: sub load_domain_tab {
13760: my ($ignore_cache,$nocache) = @_;
13761: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13762: my $fh;
13763: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13764: my @lines = <$fh>;
13765: &parse_domain_tab(\@lines);
13766: }
13767: close($fh);
13768: $loaded = 1;
13769: }
13770:
13771: sub domain {
13772: &load_domain_tab() if (!$loaded);
13773:
13774: my ($name,$what) = @_;
13775: return if ( !exists($domain{$name}) );
13776:
13777: if (!$what) {
13778: return $domain{$name}{'description'};
13779: }
13780: return $domain{$name}{$what};
13781: }
13782:
13783: sub domain_info {
13784: &load_domain_tab() if (!$loaded);
13785: return %domain;
13786: }
13787:
13788: }
13789:
13790:
13791: # ------------------------------------------------------------- Read hosts file
13792: {
13793: my %hostname;
13794: my %hostdom;
13795: my %libserv;
13796: my $loaded;
13797: my %name_to_host;
13798: my %internetdom;
13799: my %LC_dns_serv;
13800:
13801: sub parse_hosts_tab {
13802: my ($file) = @_;
13803: foreach my $configline (@$file) {
13804: next if ($configline =~ /^(\#|\s*$ )/x);
13805: chomp($configline);
13806: if ($configline =~ /^\^/) {
13807: if ($configline =~ /^\^([\w.\-]+)/) {
13808: $LC_dns_serv{$1} = 1;
13809: }
13810: next;
13811: }
13812: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13813: $name=~s/\s//g;
13814: if ($id && $domain && $role && $name) {
13815: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13816: my $curr = $hostname{$id};
13817: my $skip;
13818: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13819: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13820: $skip = 1;
13821: } else {
13822: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13823: }
13824: }
13825: unless ($skip) {
13826: push(@{$name_to_host{$name}},$id);
13827: }
13828: } else {
13829: push(@{$name_to_host{$name}},$id);
13830: }
13831: $hostname{$id}=$name;
13832: $hostdom{$id}=$domain;
13833: if ($role eq 'library') { $libserv{$id}=$name; }
13834: if (defined($protocol)) {
13835: if ($protocol eq 'https') {
13836: $protocol{$id} = $protocol;
13837: } else {
13838: $protocol{$id} = 'http';
13839: }
13840: } else {
13841: $protocol{$id} = 'http';
13842: }
13843: if (defined($intdom)) {
13844: $internetdom{$id} = $intdom;
13845: }
13846: }
13847: }
13848: }
13849:
13850: sub reset_hosts_info {
13851: &purge_remembered();
13852: &reset_domain_info();
13853: &reset_hosts_ip_info();
13854: undef(%internetdom);
13855: undef(%name_to_host);
13856: undef(%hostname);
13857: undef(%hostdom);
13858: undef(%libserv);
13859: undef($loaded);
13860: }
13861:
13862: sub load_hosts_tab {
13863: my ($ignore_cache,$nocache) = @_;
13864: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13865: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
13866: my @config = <$config>;
13867: &parse_hosts_tab(\@config);
13868: close($config);
13869: $loaded=1;
13870: }
13871:
13872: sub hostname {
13873: &load_hosts_tab() if (!$loaded);
13874:
13875: my ($lonid) = @_;
13876: return $hostname{$lonid};
13877: }
13878:
13879: sub all_hostnames {
13880: &load_hosts_tab() if (!$loaded);
13881:
13882: return %hostname;
13883: }
13884:
13885: sub all_names {
13886: my ($ignore_cache,$nocache) = @_;
13887: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13888:
13889: return %name_to_host;
13890: }
13891:
13892: sub all_host_domain {
13893: &load_hosts_tab() if (!$loaded);
13894: return %hostdom;
13895: }
13896:
13897: sub all_host_intdom {
13898: &load_hosts_tab() if (!$loaded);
13899: return %internetdom;
13900: }
13901:
13902: sub is_library {
13903: &load_hosts_tab() if (!$loaded);
13904:
13905: return exists($libserv{$_[0]});
13906: }
13907:
13908: sub all_library {
13909: &load_hosts_tab() if (!$loaded);
13910:
13911: return %libserv;
13912: }
13913:
13914: sub unique_library {
13915: #2x reverse removes all hostnames that appear more than once
13916: my %unique = reverse &all_library();
13917: return reverse %unique;
13918: }
13919:
13920: sub get_servers {
13921: &load_hosts_tab() if (!$loaded);
13922:
13923: my ($domain,$type) = @_;
13924: my %possible_hosts = ($type eq 'library') ? %libserv
13925: : %hostname;
13926: my %result;
13927: if (ref($domain) eq 'ARRAY') {
13928: while ( my ($host,$hostname) = each(%possible_hosts)) {
13929: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13930: $result{$host} = $hostname;
13931: }
13932: }
13933: } else {
13934: while ( my ($host,$hostname) = each(%possible_hosts)) {
13935: if ($hostdom{$host} eq $domain) {
13936: $result{$host} = $hostname;
13937: }
13938: }
13939: }
13940: return %result;
13941: }
13942:
13943: sub get_unique_servers {
13944: my %unique = reverse &get_servers(@_);
13945: return reverse %unique;
13946: }
13947:
13948: sub host_domain {
13949: &load_hosts_tab() if (!$loaded);
13950:
13951: my ($lonid) = @_;
13952: return $hostdom{$lonid};
13953: }
13954:
13955: sub all_domains {
13956: &load_hosts_tab() if (!$loaded);
13957:
13958: my %seen;
13959: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13960: return @uniq;
13961: }
13962:
13963: sub internet_dom {
13964: &load_hosts_tab() if (!$loaded);
13965:
13966: my ($lonid) = @_;
13967: return $internetdom{$lonid};
13968: }
13969:
13970: sub is_LC_dns {
13971: &load_hosts_tab() if (!$loaded);
13972:
13973: my ($hostname) = @_;
13974: return exists($LC_dns_serv{$hostname});
13975: }
13976:
13977: }
13978:
13979: {
13980: my %iphost;
13981: my %name_to_ip;
13982: my %lonid_to_ip;
13983:
13984: sub get_hosts_from_ip {
13985: my ($ip) = @_;
13986: my %iphosts = &get_iphost();
13987: if (ref($iphosts{$ip})) {
13988: return @{$iphosts{$ip}};
13989: }
13990: return;
13991: }
13992:
13993: sub reset_hosts_ip_info {
13994: undef(%iphost);
13995: undef(%name_to_ip);
13996: undef(%lonid_to_ip);
13997: }
13998:
13999: sub get_host_ip {
14000: my ($lonid) = @_;
14001: if (exists($lonid_to_ip{$lonid})) {
14002: return $lonid_to_ip{$lonid};
14003: }
14004: my $name=&hostname($lonid);
14005: my $ip = gethostbyname($name);
14006: return if (!$ip || length($ip) ne 4);
14007: $ip=inet_ntoa($ip);
14008: $name_to_ip{$name} = $ip;
14009: $lonid_to_ip{$lonid} = $ip;
14010: return $ip;
14011: }
14012:
14013: sub get_iphost {
14014: my ($ignore_cache,$nocache) = @_;
14015:
14016: if (!$ignore_cache) {
14017: if (%iphost) {
14018: return %iphost;
14019: }
14020: my ($ip_info,$cached)=
14021: &Apache::lonnet::is_cached_new('iphost','iphost');
14022: if ($cached) {
14023: %iphost = %{$ip_info->[0]};
14024: %name_to_ip = %{$ip_info->[1]};
14025: %lonid_to_ip = %{$ip_info->[2]};
14026: return %iphost;
14027: }
14028: }
14029:
14030: # get yesterday's info for fallback
14031: my %old_name_to_ip;
14032: my ($ip_info,$cached)=
14033: &Apache::lonnet::is_cached_new('iphost','iphost');
14034: if ($cached) {
14035: %old_name_to_ip = %{$ip_info->[1]};
14036: }
14037:
14038: my %name_to_host = &all_names($ignore_cache,$nocache);
14039: foreach my $name (keys(%name_to_host)) {
14040: my $ip;
14041: if (!exists($name_to_ip{$name})) {
14042: $ip = gethostbyname($name);
14043: if (!$ip || length($ip) ne 4) {
14044: if (defined($old_name_to_ip{$name})) {
14045: $ip = $old_name_to_ip{$name};
14046: &logthis("Can't find $name defaulting to old $ip");
14047: } else {
14048: &logthis("Name $name no IP found");
14049: next;
14050: }
14051: } else {
14052: $ip=inet_ntoa($ip);
14053: }
14054: $name_to_ip{$name} = $ip;
14055: } else {
14056: $ip = $name_to_ip{$name};
14057: }
14058: foreach my $id (@{ $name_to_host{$name} }) {
14059: $lonid_to_ip{$id} = $ip;
14060: }
14061: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14062: }
14063: unless ($nocache) {
14064: &do_cache_new('iphost','iphost',
14065: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14066: 48*60*60);
14067: }
14068:
14069: return %iphost;
14070: }
14071:
14072: #
14073: # Given a DNS returns the loncapa host name for that DNS
14074: #
14075: sub host_from_dns {
14076: my ($dns) = @_;
14077: my @hosts;
14078: my $ip;
14079:
14080: if (exists($name_to_ip{$dns})) {
14081: $ip = $name_to_ip{$dns};
14082: }
14083: if (!$ip) {
14084: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14085: if (length($ip) == 4) {
14086: $ip = &IO::Socket::inet_ntoa($ip);
14087: }
14088: }
14089: if ($ip) {
14090: @hosts = get_hosts_from_ip($ip);
14091: return $hosts[0];
14092: }
14093: return undef;
14094: }
14095:
14096: sub get_internet_names {
14097: my ($lonid) = @_;
14098: return if ($lonid eq '');
14099: my ($idnref,$cached)=
14100: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14101: if ($cached) {
14102: return $idnref;
14103: }
14104: my $ip = &get_host_ip($lonid);
14105: my @hosts = &get_hosts_from_ip($ip);
14106: my %iphost = &get_iphost();
14107: my (@idns,%seen);
14108: foreach my $id (@hosts) {
14109: my $dom = &host_domain($id);
14110: my $prim_id = &domain($dom,'primary');
14111: my $prim_ip = &get_host_ip($prim_id);
14112: next if ($seen{$prim_ip});
14113: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14114: foreach my $id (@{$iphost{$prim_ip}}) {
14115: my $intdom = &internet_dom($id);
14116: unless (grep(/^\Q$intdom\E$/,@idns)) {
14117: push(@idns,$intdom);
14118: }
14119: }
14120: }
14121: $seen{$prim_ip} = 1;
14122: }
14123: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14124: }
14125:
14126: }
14127:
14128: sub all_loncaparevs {
14129: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14130: }
14131:
14132: # ---------------------------------------------------------- Read loncaparev table
14133: {
14134: sub load_loncaparevs {
14135: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14136: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14137: while (my $configline=<$config>) {
14138: chomp($configline);
14139: my ($hostid,$loncaparev)=split(/:/,$configline);
14140: $loncaparevs{$hostid}=$loncaparev;
14141: }
14142: close($config);
14143: }
14144: }
14145: }
14146: }
14147:
14148: # ---------------------------------------------------------- Read serverhostID table
14149: {
14150: sub load_serverhomeIDs {
14151: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14152: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14153: while (my $configline=<$config>) {
14154: chomp($configline);
14155: my ($name,$id)=split(/:/,$configline);
14156: $serverhomeIDs{$name}=$id;
14157: }
14158: close($config);
14159: }
14160: }
14161: }
14162: }
14163:
14164:
14165: BEGIN {
14166:
14167: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14168: unless ($readit) {
14169: {
14170: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14171: %perlvar = (%perlvar,%{$configvars});
14172: }
14173:
14174:
14175: # ------------------------------------------------------ Read spare server file
14176: {
14177: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14178:
14179: while (my $configline=<$config>) {
14180: chomp($configline);
14181: if ($configline) {
14182: my ($host,$type) = split(':',$configline,2);
14183: if (!defined($type) || $type eq '') { $type = 'default' };
14184: push(@{ $spareid{$type} }, $host);
14185: }
14186: }
14187: close($config);
14188: }
14189: # ------------------------------------------------------------ Read permissions
14190: {
14191: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14192:
14193: while (my $configline=<$config>) {
14194: chomp($configline);
14195: if ($configline) {
14196: my ($role,$perm)=split(/ /,$configline);
14197: if ($perm ne '') { $pr{$role}=$perm; }
14198: }
14199: }
14200: close($config);
14201: }
14202:
14203: # -------------------------------------------- Read plain texts for permissions
14204: {
14205: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14206:
14207: while (my $configline=<$config>) {
14208: chomp($configline);
14209: if ($configline) {
14210: my ($short,@plain)=split(/:/,$configline);
14211: %{$prp{$short}} = ();
14212: if (@plain > 0) {
14213: $prp{$short}{'std'} = $plain[0];
14214: for (my $i=1; $i<@plain; $i++) {
14215: $prp{$short}{'alt'.$i} = $plain[$i];
14216: }
14217: }
14218: }
14219: }
14220: close($config);
14221: }
14222:
14223: # ---------------------------------------------------------- Read package table
14224: {
14225: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14226:
14227: while (my $configline=<$config>) {
14228: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14229: chomp($configline);
14230: my ($short,$plain)=split(/:/,$configline);
14231: my ($pack,$name)=split(/\&/,$short);
14232: if ($plain ne '') {
14233: $packagetab{$pack.'&'.$name.'&name'}=$name;
14234: $packagetab{$short}=$plain;
14235: }
14236: }
14237: close($config);
14238: }
14239:
14240: # ---------------------------------------------------------- Read loncaparev table
14241:
14242: &load_loncaparevs();
14243:
14244: # ---------------------------------------------------------- Read serverhostID table
14245:
14246: &load_serverhomeIDs();
14247:
14248: # ---------------------------------------------------------- Read releaseslist XML
14249: {
14250: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14251: if (-e $file) {
14252: my $parser = HTML::LCParser->new($file);
14253: while (my $token = $parser->get_token()) {
14254: if ($token->[0] eq 'S') {
14255: my $item = $token->[1];
14256: my $name = $token->[2]{'name'};
14257: my $value = $token->[2]{'value'};
14258: my $valuematch = $token->[2]{'valuematch'};
14259: my $namematch = $token->[2]{'namematch'};
14260: if ($item eq 'parameter') {
14261: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14262: my $release = $parser->get_text();
14263: $release =~ s/(^\s*|\s*$ )//gx;
14264: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14265: }
14266: } elsif ($item ne '' && $name ne '') {
14267: my $release = $parser->get_text();
14268: $release =~ s/(^\s*|\s*$ )//gx;
14269: $needsrelease{$item.':'.$name.':'.$value} = $release;
14270: }
14271: }
14272: }
14273: }
14274: }
14275:
14276: # ---------------------------------------------------------- Read managers table
14277: {
14278: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14279: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14280: while (my $configline=<$config>) {
14281: chomp($configline);
14282: next if ($configline =~ /^\#/);
14283: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14284: $managerstab{$configline} = 1;
14285: }
14286: }
14287: close($config);
14288: }
14289: }
14290: }
14291:
14292: # ------------- set up temporary directory
14293: {
14294: $tmpdir = LONCAPA::tempdir();
14295:
14296: }
14297:
14298: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14299: 'compress_threshold'=> 20_000,
14300: });
14301:
14302: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14303: $dumpcount=0;
14304: $locknum=0;
14305:
14306: &logtouch();
14307: &logthis('<font color="yellow">INFO: Read configuration</font>');
14308: $readit=1;
14309: {
14310: use integer;
14311: my $test=(2**32)+1;
14312: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14313: &logthis(" Detected 64bit platform ($_64bit)");
14314: }
14315: }
14316: }
14317:
14318: 1;
14319: __END__
14320:
14321: =pod
14322:
14323: =head1 NAME
14324:
14325: Apache::lonnet - Subroutines to ask questions about things in the network.
14326:
14327: =head1 SYNOPSIS
14328:
14329: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14330:
14331: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14332:
14333: Common parameters:
14334:
14335: =over 4
14336:
14337: =item *
14338:
14339: $uname : an internal username (if $cname expecting a course Id specifically)
14340:
14341: =item *
14342:
14343: $udom : a domain (if $cdom expecting a course's domain specifically)
14344:
14345: =item *
14346:
14347: $symb : a resource instance identifier
14348:
14349: =item *
14350:
14351: $namespace : the name of a .db file that contains the data needed or
14352: being set.
14353:
14354: =back
14355:
14356: =head1 OVERVIEW
14357:
14358: lonnet provides subroutines which interact with the
14359: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14360: about classes, users, and resources.
14361:
14362: For many of these objects you can also use this to store data about
14363: them or modify them in various ways.
14364:
14365: =head2 Symbs
14366:
14367: To identify a specific instance of a resource, LON-CAPA uses symbols
14368: or "symbs"X<symb>. These identifiers are built from the URL of the
14369: map, the resource number of the resource in the map, and the URL of
14370: the resource itself. The latter is somewhat redundant, but might help
14371: if maps change.
14372:
14373: An example is
14374:
14375: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14376:
14377: The respective map entry is
14378:
14379: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14380: title="Problem 2">
14381: </resource>
14382:
14383: Symbs are used by the random number generator, as well as to store and
14384: restore data specific to a certain instance of for example a problem.
14385:
14386: =head2 Storing And Retrieving Data
14387:
14388: X<store()>X<cstore()>X<restore()>Three of the most important functions
14389: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14390: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14391: is is the non-critical message twin of cstore. These functions are for
14392: handlers to store a perl hash to a user's permanent data space in an
14393: easy manner, and to retrieve it again on another call. It is expected
14394: that a handler would use this once at the beginning to retrieve data,
14395: and then again once at the end to send only the new data back.
14396:
14397: The data is stored in the user's data directory on the user's
14398: homeserver under the ID of the course.
14399:
14400: The hash that is returned by restore will have all of the previous
14401: value for all of the elements of the hash.
14402:
14403: Example:
14404:
14405: #creating a hash
14406: my %hash;
14407: $hash{'foo'}='bar';
14408:
14409: #storing it
14410: &Apache::lonnet::cstore(\%hash);
14411:
14412: #changing a value
14413: $hash{'foo'}='notbar';
14414:
14415: #adding a new value
14416: $hash{'bar'}='foo';
14417: &Apache::lonnet::cstore(\%hash);
14418:
14419: #retrieving the hash
14420: my %history=&Apache::lonnet::restore();
14421:
14422: #print the hash
14423: foreach my $key (sort(keys(%history))) {
14424: print("\%history{$key} = $history{$key}");
14425: }
14426:
14427: Will print out:
14428:
14429: %history{1:foo} = bar
14430: %history{1:keys} = foo:timestamp
14431: %history{1:timestamp} = 990455579
14432: %history{2:bar} = foo
14433: %history{2:foo} = notbar
14434: %history{2:keys} = foo:bar:timestamp
14435: %history{2:timestamp} = 990455580
14436: %history{bar} = foo
14437: %history{foo} = notbar
14438: %history{timestamp} = 990455580
14439: %history{version} = 2
14440:
14441: Note that the special hash entries C<keys>, C<version> and
14442: C<timestamp> were added to the hash. C<version> will be equal to the
14443: total number of versions of the data that have been stored. The
14444: C<timestamp> attribute will be the UNIX time the hash was
14445: stored. C<keys> is available in every historical section to list which
14446: keys were added or changed at a specific historical revision of a
14447: hash.
14448:
14449: B<Warning>: do not store the hash that restore returns directly. This
14450: will cause a mess since it will restore the historical keys as if the
14451: were new keys. I.E. 1:foo will become 1:1:foo etc.
14452:
14453: Calling convention:
14454:
14455: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14456: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14457:
14458: For more detailed information, see lonnet specific documentation.
14459:
14460: =head1 RETURN MESSAGES
14461:
14462: =over 4
14463:
14464: =item * B<con_lost>: unable to contact remote host
14465:
14466: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14467: when the connection is brought back up
14468:
14469: =item * B<con_failed>: unable to contact remote host and unable to save message
14470: for later delivery
14471:
14472: =item * B<error:>: an error a occurred, a description of the error follows the :
14473:
14474: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14475: that was requested
14476:
14477: =back
14478:
14479: =head1 PUBLIC SUBROUTINES
14480:
14481: =head2 Session Environment Functions
14482:
14483: =over 4
14484:
14485: =item *
14486: X<appenv()>
14487: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14488: the user envirnoment file, and will be restored for each access this
14489: user makes during this session, also modifies the %env for the current
14490: process. Optional rolesarrayref - if defined contains a reference to an array
14491: of roles which are exempt from the restriction on modifying user.role entries
14492: in the user's environment.db and in %env.
14493:
14494: =item *
14495: X<delenv()>
14496: B<delenv($delthis,$regexp)>: removes all items from the session
14497: environment file that begin with $delthis. If the
14498: optional second arg - $regexp - is true, $delthis is treated as a
14499: regular expression, otherwise \Q$delthis\E is used.
14500: The values are also deleted from the current processes %env.
14501:
14502: =item * get_env_multiple($name)
14503:
14504: gets $name from the %env hash, it seemlessly handles the cases where multiple
14505: values may be defined and end up as an array ref.
14506:
14507: returns an array of values
14508:
14509: =back
14510:
14511: =head2 User Information
14512:
14513: =over 4
14514:
14515: =item *
14516: X<queryauthenticate()>
14517: B<queryauthenticate($uname,$udom)>: try to determine user's current
14518: authentication scheme
14519:
14520: =item *
14521: X<authenticate()>
14522: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14523: authenticate user from domain's lib servers (first use the current
14524: one). C<$upass> should be the users password.
14525: $checkdefauth is optional (value is 1 if a check should be made to
14526: authenticate user using default authentication method, and allow
14527: account creation if username does not have account in the domain).
14528: $clientcancheckhost is optional (value is 1 if checking whether the
14529: server can host will occur on the client side in lonauth.pm).
14530:
14531: =item *
14532: X<homeserver()>
14533: B<homeserver($uname,$udom)>: find the server which has
14534: the user's directory and files (there must be only one), this caches
14535: the answer, and also caches if there is a borken connection.
14536:
14537: =item *
14538: X<idget()>
14539: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14540: a list of student/employee IDs or clicker IDs
14541: (student/employee IDs are a unique resource in a domain, there must be
14542: only 1 ID per username, and only 1 username per ID in a specific domain).
14543: clickerIDs are not necessarily unique, as students might share clickers.
14544: (returns hash: id=>name,id=>name)
14545:
14546: =item *
14547: X<idrget()>
14548: B<idrget($udom,@unames)>: find the IDs behind a list of
14549: usernames (returns hash: name=>id,name=>id)
14550:
14551: =item *
14552: X<idput()>
14553: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14554: names and associated student/employee IDs or clicker IDs.
14555:
14556: =item *
14557: X<iddel()>
14558: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14559: student/employee ID or clicker ID username look-ups from domain.
14560: The homeserver ($uhome) and namespace ($namespace) are optional.
14561: If no $uhome is provided, it will be determined usig &homeserver()
14562: for each user. If no $namespace is provided, the default is ids.
14563:
14564: =item *
14565: X<updateclickers()>
14566: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14567: clicker ID-to-username look-ups in clickers.db on library server.
14568: Permitted actions are add or del (i.e., add or delete). The
14569: clickers.db contains clickerID as keys (escaped), and each corresponding
14570: value is an escaped comma-separated list of usernames (for whom the
14571: library server is the homeserver), who registered that particular ID.
14572: If $critical is true, the update will be sent via &critical, otherwise
14573: &reply() will be used.
14574:
14575: =item *
14576: X<rolesinit()>
14577: B<rolesinit($udom,$username)>: get user privileges.
14578: returns user role, first access and timer interval hashes
14579:
14580: =item *
14581: X<privileged()>
14582: B<privileged($username,$domain)>: returns a true if user has a
14583: privileged and active role (i.e. su or dc), false otherwise.
14584:
14585: =item *
14586: X<getsection()>
14587: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14588: course $cname, return section name/number or '' for "not in course"
14589: and '-1' for "no section"
14590:
14591: =item *
14592: X<userenvironment()>
14593: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14594: passed in @what from the requested user's environment, returns a hash
14595:
14596: =item *
14597: X<userlog_query()>
14598: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14599: activity.log file. %filters defines filters applied when parsing the
14600: log file. These can be start or end timestamps, or the type of action
14601: - log to look for Login or Logout events, check for Checkin or
14602: Checkout, role for role selection. The response is in the form
14603: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14604: escaped strings of the action recorded in the activity.log file.
14605:
14606: =back
14607:
14608: =head2 User Roles
14609:
14610: =over 4
14611:
14612: =item *
14613:
14614: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14615: returns codes for allowed actions.
14616:
14617: The first argument is required, all others are optional.
14618:
14619: $priv is the privilege being checked.
14620: $uri contains additional information about what is being checked for access (e.g.,
14621: URL, course ID etc.).
14622: $symb is the unique resource instance identifier in a course; if needed,
14623: but not provided, it will be retrieved via a call to &symbread().
14624: $role is the role for which a priv is being checked (only used if priv is evb).
14625: $clientip is the user's IP address (only used when checking for access to portfolio
14626: files).
14627: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14628: prevents recursive calls to &allowed.
14629:
14630: F: full access
14631: U,I,K: authentication modes (cxx only)
14632: '': forbidden
14633: 1: user needs to choose course
14634: 2: browse allowed
14635: A: passphrase authentication needed
14636: B: access temporarily blocked because of a blocking event in a course.
14637:
14638: =item *
14639:
14640: constructaccess($url,$setpriv) : check for access to construction space URL
14641:
14642: See if the owner domain and name in the URL match those in the
14643: expected environment. If so, return three element list
14644: ($ownername,$ownerdomain,$ownerhome).
14645:
14646: Otherwise return the null string.
14647:
14648: If second argument 'setpriv' is true, it assigns the privileges,
14649: and returns the same three element list, unless the owner has
14650: blocked "ad hoc" Domain Coordinator access to the Author Space,
14651: in which case the null string is returned.
14652:
14653: =item *
14654:
14655: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14656: define a custom role rolename set privileges in format of lonTabs/roles.tab
14657: for system, domain, and course level. $uname and $udom are optional (current
14658: user's username and domain will be used when either of $uname or $udom are absent.
14659:
14660: =item *
14661:
14662: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14663: (rolesplain.tab); plain text explanation of a user role term.
14664: $type is Course (default) or Community.
14665: If $forcedefault evaluates to true, text returned will be default
14666: text for $type. Otherwise, if this is a course, the text returned
14667: will be a custom name for the role (if defined in the course's
14668: environment). If no custom name is defined the default is returned.
14669:
14670: =item *
14671:
14672: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14673: All arguments are optional. Returns a hash of a roles, either for
14674: co-author/assistant author roles for a user's Construction Space
14675: (default), or if $context is 'userroles', roles for the user himself,
14676: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14677: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14678: For each key, value is set to colon-separated start and end times for
14679: the role. If no username and domain are specified, will default to
14680: current user/domain. Types, roles, and roledoms are references to arrays
14681: of role statuses (active, future or previous), roles
14682: (e.g., cc,in, st etc.) and domains of the roles which can be used
14683: to restrict the list of roles reported. If no array ref is
14684: provided for types, will default to return only active roles.
14685:
14686: =item *
14687:
14688: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14689: user: $uname:$udom has a role in the course: $cdom_$cnum.
14690:
14691: Additional optional arguments are: $type (if role checking is to be restricted
14692: to certain user status types -- previous (expired roles), active (currently
14693: available roles) or future (roles available in the future), and
14694: $hideprivileged -- if true will not report course roles for users who
14695: have active Domain Coordinator role in course's domain or in additional
14696: domains (specified in 'Domains to check for privileged users' in course
14697: environment -- set via: Course Settings -> Classlists and staff listing).
14698:
14699: =item *
14700:
14701: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14702: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14703: $possdomains and $possroles are optional array refs -- to domains to check and
14704: roles to check. If $possdomains is not specified, a dump will be done of the
14705: users' roles.db to check for a dc or su role in any domain. This can be
14706: time consuming if &privileged is called repeatedly (e.g., when displaying a
14707: classlist), so in such cases, supplying a $possdomains array is preferred, as
14708: this then allows &privileged_by_domain() to be used, which caches the identity
14709: of privileged users, eliminating the need for repeated calls to &dump().
14710:
14711: =item *
14712:
14713: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14714: where the outer hash keys are domains specified in the $possdomains array ref,
14715: next inner hash keys are privileged roles specified in the $roles array ref,
14716: and the innermost hash contains key = value pairs for username:domain = end:start
14717: for active or future "privileged" users with that role in that domain. To avoid
14718: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14719: innerhash are cached using priv_$role and $dom as the identifiers.
14720:
14721: =back
14722:
14723: =head2 User Modification
14724:
14725: =over 4
14726:
14727: =item *
14728:
14729: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14730: user for the level given by URL. Optional start and end dates (leave empty
14731: string or zero for "no date")
14732:
14733: =item *
14734:
14735: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14736: change a users, password, possible return values are: ok,
14737: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14738: refused
14739:
14740: =item *
14741:
14742: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14743:
14744: =item *
14745:
14746: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14747: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14748:
14749: will update user information (firstname,middlename,lastname,generation,
14750: permanentemail), and if forceid is true, student/employee ID also.
14751: A user's institutional affiliation(s) can also be updated.
14752: User information fields will not be overwritten with empty entries
14753: unless the field is included in the $candelete array reference.
14754: This array is included when a single user is modified via "Manage Users",
14755: or when Autoupdate.pl is run by cron in a domain.
14756:
14757: =item *
14758:
14759: modifystudent
14760:
14761: modify a student's enrollment and identification information.
14762: The course id is resolved based on the current user's environment.
14763: This means the invoking user must be a course coordinator or otherwise
14764: associated with a course.
14765:
14766: This call is essentially a wrapper for lonnet::modifyuser and
14767: lonnet::modify_student_enrollment
14768:
14769: Inputs:
14770:
14771: =over 4
14772:
14773: =item B<$udom> Student's loncapa domain
14774:
14775: =item B<$uname> Student's loncapa login name
14776:
14777: =item B<$uid> Student/Employee ID
14778:
14779: =item B<$umode> Student's authentication mode
14780:
14781: =item B<$upass> Student's password
14782:
14783: =item B<$first> Student's first name
14784:
14785: =item B<$middle> Student's middle name
14786:
14787: =item B<$last> Student's last name
14788:
14789: =item B<$gene> Student's generation
14790:
14791: =item B<$usec> Student's section in course
14792:
14793: =item B<$end> Unix time of the roles expiration
14794:
14795: =item B<$start> Unix time of the roles start date
14796:
14797: =item B<$forceid> If defined, allow $uid to be changed
14798:
14799: =item B<$desiredhome> server to use as home server for student
14800:
14801: =item B<$email> Student's permanent e-mail address
14802:
14803: =item B<$type> Type of enrollment (auto or manual)
14804:
14805: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14806:
14807: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14808:
14809: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14810:
14811: =item B<$context> role change context (shown in User Management Logs display in a course)
14812:
14813: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14814:
14815: =item B<$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.
14816:
14817: =back
14818:
14819: =item *
14820:
14821: modify_student_enrollment
14822:
14823: Change a student's enrollment status in a class. The environment variable
14824: 'role.request.course' must be defined for this function to proceed.
14825:
14826: Inputs:
14827:
14828: =over 4
14829:
14830: =item $udom, student's domain
14831:
14832: =item $uname, student's name
14833:
14834: =item $uid, student's user id
14835:
14836: =item $first, student's first name
14837:
14838: =item $middle
14839:
14840: =item $last
14841:
14842: =item $gene
14843:
14844: =item $usec
14845:
14846: =item $end
14847:
14848: =item $start
14849:
14850: =item $type
14851:
14852: =item $locktype
14853:
14854: =item $cid
14855:
14856: =item $selfenroll
14857:
14858: =item $context
14859:
14860: =item $credits, number of credits student will earn from this class
14861:
14862: =item $instsec, institutional course section code for student
14863:
14864: =back
14865:
14866:
14867: =item *
14868:
14869: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14870: custom role; give a custom role to a user for the level given by URL. Specify
14871: name and domain of role author, and role name
14872:
14873: =item *
14874:
14875: revokerole($udom,$uname,$url,$role) : revoke a role for url
14876:
14877: =item *
14878:
14879: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14880:
14881: =back
14882:
14883: =head2 Course Infomation
14884:
14885: =over 4
14886:
14887: =item *
14888:
14889: coursedescription($courseid,$options) : returns a hash of information about the
14890: specified course id, including all environment settings for the
14891: course, the description of the course will be in the hash under the
14892: key 'description'
14893:
14894: $options is an optional parameter that if supplied is a hash reference that controls
14895: what how this function works. It has the following key/values:
14896:
14897: =over 4
14898:
14899: =item freshen_cache
14900:
14901: If defined, and the environment cache for the course is valid, it is
14902: returned in the returned hash.
14903:
14904: =item one_time
14905:
14906: If defined, the last cache time is set to _now_
14907:
14908: =item user
14909:
14910: If defined, the supplied username is used instead of the current user.
14911:
14912:
14913: =back
14914:
14915: =item *
14916:
14917: resdata($name,$domain,$type,@which) : request for current parameter
14918: setting for a specific $type, where $type is either 'course' or 'user',
14919: @what should be a list of parameters to ask about. This routine caches
14920: answers for 10 minutes.
14921:
14922: =item *
14923:
14924: get_courseresdata($courseid, $domain) : dump the entire course resource
14925: data base, returning a hash that is keyed by the resource name and has
14926: values that are the resource value. I believe that the timestamps and
14927: versions are also returned.
14928:
14929: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
14930: supplemental content area. This routine caches the number of files for
14931: 10 minutes.
14932:
14933: =back
14934:
14935: =head2 Course Modification
14936:
14937: =over 4
14938:
14939: =item *
14940:
14941: writecoursepref($courseid,%prefs) : write preferences (environment
14942: database) for a course
14943:
14944: =item *
14945:
14946: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
14947:
14948: =item *
14949:
14950: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14951:
14952: =item *
14953:
14954: is_course($courseid), is_course($cdom, $cnum)
14955:
14956: Accepts either a combined $courseid (in the form of domain_courseid) or the
14957: two component version $cdom, $cnum. It checks if the specified course exists.
14958:
14959: Returns:
14960: undef if the course doesn't exist, otherwise
14961: in scalar context the combined courseid.
14962: in list context the two components of the course identifier, domain and
14963: courseid.
14964:
14965: =back
14966:
14967: =head2 Resource Subroutines
14968:
14969: =over 4
14970:
14971: =item *
14972:
14973: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14974:
14975: =item *
14976:
14977: repcopy($filename) : subscribes to the requested file, and attempts to
14978: replicate from the owning library server, Might return
14979: 'unavailable', 'not_found', 'forbidden', 'ok', or
14980: 'bad_request', also attempts to grab the metadata for the
14981: resource. Expects the local filesystem pathname
14982: (/home/httpd/html/res/....)
14983:
14984: =back
14985:
14986: =head2 Resource Information
14987:
14988: =over 4
14989:
14990: =item *
14991:
14992: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14993: and returns the value of a variety of different possible values,
14994: $varname should be a request string, and the other parameters can be
14995: used to specify who and what one is asking about. Ordinarily, $cid
14996: does not need to be specified, as it is retrived from
14997: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14998: within lonuserstate::loadmap() when initializing a course, before
14999: $env{'request.course.id'} has been set, so it needs to be provided
15000: in that one case.
15001:
15002: Possible values for $varname are environment.lastname (or other item
15003: from the envirnment hash), user.name (or someother aspect about the
15004: user), resource.0.maxtries (or some other part and parameter of a
15005: resource)
15006:
15007: =item *
15008:
15009: directcondval($number) : get current value of a condition; reads from a state
15010: string
15011:
15012: =item *
15013:
15014: condval($condidx) : value of condition index based on state
15015:
15016: =item *
15017:
15018: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15019: resource's metadata, $what should be either a specific key, or either
15020: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15021: packages that this resource currently uses, the last 3 arguments are
15022: only used internally for recursive metadata.
15023:
15024: the toolsymb is only used where the uri is for an external tool (for which
15025: the uri as well as the symb are guaranteed to be unique).
15026:
15027: this function automatically caches all requests except any made recursively
15028: to retrieve a list of metadata keys for an imported library file ($liburi is
15029: defined).
15030:
15031: =item *
15032:
15033: metadata_query($query,$custom,$customshow) : make a metadata query against the
15034: network of library servers; returns file handle of where SQL and regex results
15035: will be stored for query
15036:
15037: =item *
15038:
15039: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15040: return symbolic list entry (all arguments optional).
15041:
15042: Args: filename is the filename (including path) for the file for which a symb
15043: is required; donotrecurse, if true will prevent calls to allowed() being made
15044: to check access status if more than one resource was found in the bighash
15045: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15046: a randompick); ignorecachednull, if true will prevent a symb of '' being
15047: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15048: cause possible symbs to be checked to determine if they are subject to content
15049: blocking, if so they will not be included as possible symbs; possibles is a
15050: ref to a hash, which, as a side effect, will be populated with all possible
15051: symbs (content blocking not tested).
15052:
15053: returns the data handle
15054:
15055: =item *
15056:
15057: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15058: and is a possible symb for the URL in $thisfn, and if is an encrypted
15059: resource that the user accessed using /enc/ returns a 1 on success, 0
15060: on failure, user must be in a course, as it assumes the existence of
15061: the course initial hash, and uses $env('request.course.id'}. The third
15062: arg is an optional reference to a scalar. If this arg is passed in the
15063: call to symbverify, it will be set to 1 if the symb has been set to be
15064: encrypted; otherwise it will be null.
15065:
15066: =item *
15067:
15068: symbclean($symb) : removes versions numbers from a symb, returns the
15069: cleaned symb
15070:
15071: =item *
15072:
15073: is_on_map($uri) : checks if the $uri is somewhere on the current
15074: course map, user must be in a course for it to work.
15075:
15076: =item *
15077:
15078: numval($salt) : return random seed value (addend for rndseed)
15079:
15080: =item *
15081:
15082: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15083: a random seed, all arguments are optional, if they aren't sent it uses the
15084: environment to derive them. Note: if symb isn't sent and it can't get one
15085: from &symbread it will use the current time as its return value
15086:
15087: =item *
15088:
15089: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15090: unfakeable, receipt
15091:
15092: =item *
15093:
15094: receipt() : API to ireceipt working off of env values; given out to users
15095:
15096: =item *
15097:
15098: countacc($url) : count the number of accesses to a given URL
15099:
15100: =item *
15101:
15102: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15103:
15104: =item *
15105:
15106: checkin($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 $tcrsid)
15107:
15108: =item *
15109:
15110: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15111:
15112: =item *
15113:
15114: devalidate($symb) : devalidate temporary spreadsheet calculations,
15115: forcing spreadsheet to reevaluate the resource scores next time.
15116:
15117: =item *
15118:
15119: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15120: when viewing in course context.
15121:
15122: input: six args -- filename (decluttered), course number, course domain,
15123: url, symb (if registered) and group (if this is a
15124: group item -- e.g., bulletin board, group page etc.).
15125:
15126: output: array of five scalars --
15127: $cfile -- url for file editing if editable on current server
15128: $home -- homeserver of resource (i.e., for author if published,
15129: or course if uploaded.).
15130: $switchserver -- 1 if server switch will be needed.
15131: $forceedit -- 1 if icon/link should be to go to edit mode
15132: $forceview -- 1 if icon/link should be to go to view mode
15133:
15134: =item *
15135:
15136: is_course_upload($file,$cnum,$cdom)
15137:
15138: Used in course context to determine if current file was uploaded to
15139: the course (i.e., would be found in /userfiles/docs on the course's
15140: homeserver.
15141:
15142: input: 3 args -- filename (decluttered), course number and course domain.
15143: output: boolean -- 1 if file was uploaded.
15144:
15145: =back
15146:
15147: =head2 Storing/Retreiving Data
15148:
15149: =over 4
15150:
15151: =item *
15152:
15153: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15154: permanently for this url; hashref needs to be given and should be a \%hashname;
15155: the remaining args aren't required and if they aren't passed or are '' they will
15156: be derived from the env (with the exception of $laststore, which is an
15157: optional arg used when a user's submission is stored in grading).
15158: $laststore is $version=$timestamp, where $version is the most recent version
15159: number retrieved for the corresponding $symb in the $namespace db file, and
15160: $timestamp is the timestamp for that transaction (UNIX time).
15161: $laststore is currently only passed when cstore() is called by
15162: structuretags::finalize_storage().
15163:
15164: =item *
15165:
15166: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15167: but uses critical subroutine
15168:
15169: =item *
15170:
15171: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15172: all args are optional
15173:
15174: =item *
15175:
15176: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15177: dumps the complete (or key matching regexp) namespace into a hash
15178: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15179: normally &store()ed into
15180:
15181: $range should be either an integer '100' (give me the first 100
15182: matching records)
15183: or be two integers sperated by a - with no spaces
15184: '30-50' (give me the 30th through the 50th matching
15185: records)
15186:
15187:
15188: =item *
15189:
15190: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15191: replaces a &store() version of data with a replacement set of data
15192: for a particular resource in a namespace passed in the $storehash hash
15193: reference. If $tolog is true, the transaction is logged in the courselog
15194: with an action=PUTSTORE.
15195:
15196: =item *
15197:
15198: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15199: works very similar to store/cstore, but all data is stored in a
15200: temporary location and can be reset using tmpreset, $storehash should
15201: be a hash reference, returns nothing on success
15202:
15203: =item *
15204:
15205: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15206: similar to restore, but all data is stored in a temporary location and
15207: can be reset using tmpreset. Returns a hash of values on success,
15208: error string otherwise.
15209:
15210: =item *
15211:
15212: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15213: deltes all keys for $symb form the temporary storage hash.
15214:
15215: =item *
15216:
15217: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15218: reference filled in from namesp ($udom and $uname are optional)
15219:
15220: =item *
15221:
15222: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15223: namesp ($udom and $uname are optional)
15224:
15225: =item *
15226:
15227: dump($namespace,$udom,$uname,$regexp,$range) :
15228: dumps the complete (or key matching regexp) namespace into a hash
15229: ($udom, $uname, $regexp, $range are optional)
15230:
15231: $range should be either an integer '100' (give me the first 100
15232: matching records)
15233: or be two integers sperated by a - with no spaces
15234: '30-50' (give me the 30th through the 50th matching
15235: records)
15236: =item *
15237:
15238: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15239: $store can be a scalar, an array reference, or if the amount to be
15240: incremented is > 1, a hash reference.
15241:
15242: ($udom and $uname are optional)
15243:
15244: =item *
15245:
15246: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15247: ($udom and $uname are optional)
15248:
15249: =item *
15250:
15251: cput($namespace,$storehash,$udom,$uname) : critical put
15252: ($udom and $uname are optional)
15253:
15254: =item *
15255:
15256: newput($namespace,$storehash,$udom,$uname) :
15257:
15258: Attempts to store the items in the $storehash, but only if they don't
15259: currently exist, if this succeeds you can be certain that you have
15260: successfully created a new key value pair in the $namespace db.
15261:
15262:
15263: Args:
15264: $namespace: name of database to store values to
15265: $storehash: hashref to store to the db
15266: $udom: (optional) domain of user containing the db
15267: $uname: (optional) name of user caontaining the db
15268:
15269: Returns:
15270: 'ok' -> succeeded in storing all keys of $storehash
15271: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15272: least <key> already existed in the db (other
15273: requested keys may also already exist)
15274: 'error: <msg>' -> unable to tie the DB or other error occurred
15275: 'con_lost' -> unable to contact request server
15276: 'refused' -> action was not allowed by remote machine
15277:
15278:
15279: =item *
15280:
15281: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15282: reference filled in from namesp (encrypts the return communication)
15283: ($udom and $uname are optional)
15284:
15285: =item *
15286:
15287: log($udom,$name,$home,$message) : write to permanent log for user; use
15288: critical subroutine
15289:
15290: =item *
15291:
15292: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15293: array reference filled in from namespace found in domain level on either
15294: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15295:
15296: =item *
15297:
15298: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15299: domain level either on specified domain server ($uhome) or primary domain
15300: server ($udom and $uhome are optional)
15301:
15302: =item *
15303:
15304: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15305: for: authentication, language, quotas, timezone, date locale, and portal URL in
15306: the target domain.
15307:
15308: May also include additional key => value pairs for the following groups:
15309:
15310: =over
15311:
15312: =item
15313: disk quotas (MB allocated by default to portfolios and authoring spaces).
15314:
15315: =over
15316:
15317: =item defaultquota, authorquota
15318:
15319: =back
15320:
15321: =item
15322: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15323: portfolio for users).
15324:
15325: =over
15326:
15327: =item
15328: aboutme, blog, webdav, portfolio
15329:
15330: =back
15331:
15332: =item
15333: requestcourses: ability to request courses, and how requests are processed.
15334:
15335: =over
15336:
15337: =item
15338: official, unofficial, community, textbook, placement
15339:
15340: =back
15341:
15342: =item
15343: inststatus: types of institutional affiliation, and order in which they are displayed.
15344:
15345: =over
15346:
15347: =item
15348: inststatustypes, inststatusorder, inststatusguest
15349:
15350: =back
15351:
15352: =item
15353: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15354: for course's uploaded content.
15355:
15356: =over
15357:
15358: =item
15359: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15360: communityquota, textbookquota, placementquota
15361:
15362: =back
15363:
15364: =item
15365: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15366: on your servers.
15367:
15368: =over
15369:
15370: =item
15371: remotesessions, hostedsessions
15372:
15373: =back
15374:
15375: =back
15376:
15377: In cases where a domain coordinator has never used the "Set Domain Configuration"
15378: utility to create a configuration.db file on a domain's primary library server
15379: only the following domain defaults: auth_def, auth_arg_def, lang_def
15380: -- corresponding values are authentication type (internal, krb4, krb5,
15381: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15382: will be available. Values are retrieved from cache (if current), unless the
15383: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15384: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15385:
15386: Typical usage:
15387:
15388: %domdefaults = &get_domain_defaults($target_domain);
15389:
15390: =back
15391:
15392: =head2 Network Status Functions
15393:
15394: =over 4
15395:
15396: =item *
15397:
15398: dirlist() : return directory list based on URI (first arg).
15399:
15400: Inputs: 1 required, 5 optional.
15401:
15402: =over
15403:
15404: =item
15405: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15406:
15407: =item
15408: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15409:
15410: =item
15411: $username - username of user/course to be listed. Extracted from $uri if absent.
15412:
15413: =item
15414: $getpropath - boolean: 1 if prepend path using &propath().
15415:
15416: =item
15417: $getuserdir - boolean: 1 if prepend path for "userfiles".
15418:
15419: =item
15420: $alternateRoot - path to prepend in place of path from $uri.
15421:
15422: =back
15423:
15424: Returns: Array of up to two items.
15425:
15426: =over
15427:
15428: a reference to an array of files/subdirectories
15429:
15430: =over
15431:
15432: Each element in the array of files/subdirectories is a & separated list of
15433: item name and the result of running stat on the item. If dirlist was requested
15434: for a file instead of a directory, the item name will be ''. For a directory
15435: listing, if the item is a metadata file, the element will end &N&M
15436: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15437: default copyright set (1).
15438:
15439: =back
15440:
15441: a scalar containing error condition (if encountered).
15442:
15443: =over
15444:
15445: =item
15446: no_host (no homeserver identified for $username:$domain).
15447:
15448: =item
15449: no_such_host (server contacted for listing not identified as valid host).
15450:
15451: =item
15452: con_lost (connection to remote server failed).
15453:
15454: =item
15455: refused (invalid $username:$domain received on lond side).
15456:
15457: =item
15458: no_such_dir (directory at specified path on lond side does not exist).
15459:
15460: =item
15461: empty (directory at specified path on lond side is empty).
15462:
15463: =over
15464:
15465: This is currently not encountered because the &ls3, &ls2,
15466: &ls (_handler) routines on the lond side do not filter out
15467: . and .. from a directory listing.
15468:
15469: =back
15470:
15471: =back
15472:
15473: =back
15474:
15475: =item *
15476:
15477: spareserver() : find server with least workload from spare.tab
15478:
15479:
15480: =item *
15481:
15482: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15483: if there is no corresponding loncapa host.
15484:
15485: =back
15486:
15487:
15488: =head2 Apache Request
15489:
15490: =over 4
15491:
15492: =item *
15493:
15494: ssi($url,%hash) : server side include, does a complete request cycle on url to
15495: localhost, posts hash
15496:
15497: =back
15498:
15499: =head2 Data to String to Data
15500:
15501: =over 4
15502:
15503: =item *
15504:
15505: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15506: and '&' separators, supports elements that are arrayrefs and hashrefs
15507:
15508: =item *
15509:
15510: hashref2str($hashref) : convert a hashref into a string complete with
15511: escaping and '=' and '&' separators, supports elements that are
15512: arrayrefs and hashrefs
15513:
15514: =item *
15515:
15516: arrayref2str($arrayref) : convert an arrayref into a string complete
15517: with escaping and '&' separators, supports elements that are arrayrefs
15518: and hashrefs
15519:
15520: =item *
15521:
15522: str2hash($string) : convert string to hash using unescaping and
15523: splitting on '=' and '&', supports elements that are arrayrefs and
15524: hashrefs
15525:
15526: =item *
15527:
15528: str2array($string) : convert string to hash using unescaping and
15529: splitting on '&', supports elements that are arrayrefs and hashrefs
15530:
15531: =back
15532:
15533: =head2 Logging Routines
15534:
15535:
15536: These routines allow one to make log messages in the lonnet.log and
15537: lonnet.perm logfiles.
15538:
15539: =over 4
15540:
15541: =item *
15542:
15543: logtouch() : make sure the logfile, lonnet.log, exists
15544:
15545: =item *
15546:
15547: logthis() : append message to the normal lonnet.log file, it gets
15548: preiodically rolled over and deleted.
15549:
15550: =item *
15551:
15552: logperm() : append a permanent message to lonnet.perm.log, this log
15553: file never gets deleted by any automated portion of the system, only
15554: messages of critical importance should go in here.
15555:
15556:
15557: =back
15558:
15559: =head2 General File Helper Routines
15560:
15561: =over 4
15562:
15563: =item *
15564:
15565: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15566: (a) files in /uploaded
15567: (i) If a local copy of the file exists -
15568: compares modification date of local copy with last-modified date for
15569: definitive version stored on home server for course. If local copy is
15570: stale, requests a new version from the home server and stores it.
15571: If the original has been removed from the home server, then local copy
15572: is unlinked.
15573: (ii) If local copy does not exist -
15574: requests the file from the home server and stores it.
15575:
15576: If $caller is 'uploadrep':
15577: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15578: for request for files originally uploaded via DOCS.
15579: - returns 'ok' if fresh local copy now available, -1 otherwise.
15580:
15581: Otherwise:
15582: This indicates a call from the content generation phase of the request.
15583: - returns the entire contents of the file or -1.
15584:
15585: (b) files in /res
15586: - returns the entire contents of a file or -1;
15587: it properly subscribes to and replicates the file if neccessary.
15588:
15589:
15590: =item *
15591:
15592: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15593: reference
15594:
15595: returns either a stat() list of data about the file or an empty list
15596: if the file doesn't exist or couldn't find out about it (connection
15597: problems or user unknown)
15598:
15599: =item *
15600:
15601: filelocation($dir,$file) : returns file system location of a file
15602: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15603: directory that relative $file lookups are to looked in ($dir of /a/dir
15604: and a file of ../bob will become /a/bob)
15605:
15606: =item *
15607:
15608: hreflocation($dir,$file) : returns file system location or a URL; same as
15609: filelocation except for hrefs
15610:
15611: =item *
15612:
15613: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15614: also removes beginning /home/httpd/html unless /priv/ follows it.
15615:
15616: =back
15617:
15618: =head2 Usererfile file routines (/uploaded*)
15619:
15620: =over 4
15621:
15622: =item *
15623:
15624: userfileupload(): main rotine for putting a file in a user or course's
15625: filespace, arguments are,
15626:
15627: formname - required - this is the name of the element in $env where the
15628: filename, and the contents of the file to create/modifed exist
15629: the filename is in $env{'form.'.$formname.'.filename'} and the
15630: contents of the file is located in $env{'form.'.$formname}
15631: context - if coursedoc, store the file in the course of the active role
15632: of the current user;
15633: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15634: if 'canceloverwrite': delete file in tmp/overwrites directory
15635: subdir - required - subdirectory to put the file in under ../userfiles/
15636: if undefined, it will be placed in "unknown"
15637:
15638: (This routine calls clean_filename() to remove any dangerous
15639: characters from the filename, and then calls finuserfileupload() to
15640: complete the transaction)
15641:
15642: returns either the url of the uploaded file (/uploaded/....) if successful
15643: and /adm/notfound.html if unsuccessful
15644:
15645: =item *
15646:
15647: clean_filename(): routine for cleaing a filename up for storage in
15648: userfile space, argument is:
15649:
15650: filename - proposed filename
15651:
15652: returns: the new clean filename
15653:
15654: =item *
15655:
15656: finishuserfileupload(): routine that creates and sends the file to
15657: userspace, probably shouldn't be called directly
15658:
15659: docuname: username or courseid of destination for the file
15660: docudom: domain of user/course of destination for the file
15661: formname: same as for userfileupload()
15662: fname: filename (including subdirectories) for the file
15663: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15664: allfiles: reference to hash used to store objects found by parser
15665: codebase: reference to hash used for codebases of java objects found by parser
15666: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15667: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15668: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15669: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15670: context: if 'overwrite', will move the uploaded file from its temporary location to
15671: userfiles to facilitate overwriting a previously uploaded file with same name.
15672: mimetype: reference to scalar to accommodate mime type determined
15673: from File::MMagic if $parser = parse.
15674:
15675: returns either the url of the uploaded file (/uploaded/....) if successful
15676: and /adm/notfound.html if unsuccessful (or an error message if context
15677: was 'overwrite').
15678:
15679:
15680: =item *
15681:
15682: renameuserfile(): renames an existing userfile to a new name
15683:
15684: Args:
15685: docuname: username or courseid of destination for the file
15686: docudom: domain of user/course of destination for the file
15687: old: current file name (including any subdirs under userfiles)
15688: new: desired file name (including any subdirs under userfiles)
15689:
15690: =item *
15691:
15692: mkdiruserfile(): creates a directory is a userfiles dir
15693:
15694: Args:
15695: docuname: username or courseid of destination for the file
15696: docudom: domain of user/course of destination for the file
15697: dir: dir to create (including any subdirs under userfiles)
15698:
15699: =item *
15700:
15701: removeuserfile(): removes a file that exists in userfiles
15702:
15703: Args:
15704: docuname: username or courseid of destination for the file
15705: docudom: domain of user/course of destination for the file
15706: fname: filname to delete (including any subdirs under userfiles)
15707:
15708: =item *
15709:
15710: removeuploadedurl(): convience function for removeuserfile()
15711:
15712: Args:
15713: url: a full /uploaded/... url to delete
15714:
15715: =item *
15716:
15717: get_portfile_permissions():
15718: Args:
15719: domain: domain of user or course contain the portfolio files
15720: user: name of user or num of course contain the portfolio files
15721: Returns:
15722: hashref of a dump of the proper file_permissions.db
15723:
15724:
15725: =item *
15726:
15727: get_access_controls():
15728:
15729: Args:
15730: current_permissions: the hash ref returned from get_portfile_permissions()
15731: group: (optional) the group you want the files associated with
15732: file: (optional) the file you want access info on
15733:
15734: Returns:
15735: a hash (keys are file names) of hashes containing
15736: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15737: values are XML containing access control settings (see below)
15738:
15739: Internal notes:
15740:
15741: access controls are stored in file_permissions.db as key=value pairs.
15742: key -> path to file/file_name\0uniqueID:scope_end_start
15743: where scope -> public,guest,course,group,domains or users.
15744: end -> UNIX time for end of access (0 -> no end date)
15745: start -> UNIX time for start of access
15746:
15747: value -> XML description of access control
15748: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15749: <start></start>
15750: <end></end>
15751:
15752: <password></password> for scope type = guest
15753:
15754: <domain></domain> for scope type = course or group
15755: <number></number>
15756: <roles id="">
15757: <role></role>
15758: <access></access>
15759: <section></section>
15760: <group></group>
15761: </roles>
15762:
15763: <dom></dom> for scope type = domains
15764:
15765: <users> for scope type = users
15766: <user>
15767: <uname></uname>
15768: <udom></udom>
15769: </user>
15770: </users>
15771: </scope>
15772:
15773: Access data is also aggregated for each file in an additional key=value pair:
15774: key -> path to file/file_name\0accesscontrol
15775: value -> reference to hash
15776: hash contains key = value pairs
15777: where key = uniqueID:scope_end_start
15778: value = UNIX time record was last updated
15779:
15780: Used to improve speed of look-ups of access controls for each file.
15781:
15782: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15783:
15784: =item *
15785:
15786: modify_access_controls():
15787:
15788: Modifies access controls for a portfolio file
15789: Args
15790: 1. file name
15791: 2. reference to hash of required changes,
15792: 3. domain
15793: 4. username
15794: where domain,username are the domain of the portfolio owner
15795: (either a user or a course)
15796:
15797: Returns:
15798: 1. result of additions or updates ('ok' or 'error', with error message).
15799: 2. result of deletions ('ok' or 'error', with error message).
15800: 3. reference to hash of any new or updated access controls.
15801: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15802: key = integer (inbound ID)
15803: value = uniqueID
15804:
15805: =item *
15806:
15807: get_timebased_id():
15808:
15809: Attempts to get a unique timestamp-based suffix for use with items added to a
15810: course via the Course Editor (e.g., folders, composite pages,
15811: group bulletin boards).
15812:
15813: Args: (first three required; six others optional)
15814:
15815: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15816: docssequence, or name of group
15817:
15818: 2. keyid (alphanumeric): name of temporary locking key in hash,
15819: e.g., num, boardids
15820:
15821: 3. namespace: name of gdbm file used to store suffixes already assigned;
15822: file will be named nohist_namespace.db
15823:
15824: 4. cdom: domain of course; default is current course domain from %env
15825:
15826: 5. cnum: course number; default is current course number from %env
15827:
15828: 6. idtype: set to concat if an additional digit is to be appended to the
15829: unix timestamp to form the suffix, if the plain timestamp is already
15830: in use. Default is to not do this, but simply increment the unix
15831: timestamp by 1 until a unique key is obtained.
15832:
15833: 7. who: holder of locking key; defaults to user:domain for user.
15834:
15835: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15836: retrying); default is 3.
15837:
15838: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15839:
15840: Returns:
15841:
15842: 1. suffix obtained (numeric)
15843:
15844: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15845:
15846: 3. error: contains (localized) error message if an error occurred.
15847:
15848:
15849: =back
15850:
15851: =head2 HTTP Helper Routines
15852:
15853: =over 4
15854:
15855: =item *
15856:
15857: escape() : unpack non-word characters into CGI-compatible hex codes
15858:
15859: =item *
15860:
15861: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15862:
15863: =back
15864:
15865: =head1 PRIVATE SUBROUTINES
15866:
15867: =head2 Underlying communication routines (Shouldn't call)
15868:
15869: =over 4
15870:
15871: =item *
15872:
15873: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15874:
15875: =item *
15876:
15877: reply() : uses subreply to send a message to remote machine, logs all failures
15878:
15879: =item *
15880:
15881: critical() : passes a critical message to another server; if cannot
15882: get through then place message in connection buffer directory and
15883: returns con_delayed, if incapable of saving message, returns
15884: con_failed
15885:
15886: =item *
15887:
15888: reconlonc() : tries to reconnect lonc client processes.
15889:
15890: =back
15891:
15892: =head2 Resource Access Logging
15893:
15894: =over 4
15895:
15896: =item *
15897:
15898: flushcourselogs() : flush (save) buffer logs and access logs
15899:
15900: =item *
15901:
15902: courselog($what) : save message for course in hash
15903:
15904: =item *
15905:
15906: courseacclog($what) : save message for course using &courselog(). Perform
15907: special processing for specific resource types (problems, exams, quizzes, etc).
15908:
15909: =item *
15910:
15911: goodbye() : flush course logs and log shutting down; it is called in srm.conf
15912: as a PerlChildExitHandler
15913:
15914: =back
15915:
15916: =head2 Other
15917:
15918: =over 4
15919:
15920: =item *
15921:
15922: symblist($mapname,%newhash) : update symbolic storage links
15923:
15924: =back
15925:
15926: =cut
15927:
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