1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1399 2018/12/29 16:41:24 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: use CGI::Cookie;
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),$loncaparevs{$lonid})."\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 $hostname = &hostname($lonhost);
315: my $protocol = $protocol{$lonhost};
316: $protocol = 'http' if ($protocol ne 'https');
317: my $url = $protocol.'://'.$hostname.'/adm/about.html';
318: my $request=new HTTP::Request('GET',$url);
319: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
320: unless ($response->is_error()) {
321: my $content = $response->content;
322: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
323: $loncaparev = $1;
324: }
325: }
326: } else {
327: $loncaparev = $loncaparevs{$lonhost};
328: }
329: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
330: $loncaparev = $1;
331: }
332: }
333: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
334: }
335: }
336:
337: sub get_server_homeID {
338: my ($hostname,$ignore_cache,$caller) = @_;
339: unless ($ignore_cache) {
340: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
341: if (defined($cached)) {
342: return $serverhomeID;
343: }
344: }
345: my $cachetime = 12*3600;
346: my $serverhomeID;
347: if ($caller eq 'loncron') {
348: my @machine_ids = &machine_ids($hostname);
349: foreach my $id (@machine_ids) {
350: my $response = &reply('serverhomeID',$id);
351: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
352: $serverhomeID = $response;
353: last;
354: }
355: }
356: if ($serverhomeID eq '') {
357: $serverhomeID = $machine_ids[-1];
358: }
359: } else {
360: $serverhomeID = $serverhomeIDs{$hostname};
361: }
362: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
363: }
364:
365: sub get_remote_globals {
366: my ($lonhost,$whathash,$ignore_cache) = @_;
367: my ($result,%returnhash,%whatneeded);
368: if (ref($whathash) eq 'HASH') {
369: foreach my $what (sort(keys(%{$whathash}))) {
370: my $hashid = $lonhost.'-'.$what;
371: my ($response,$cached);
372: unless ($ignore_cache) {
373: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
374: }
375: if (defined($cached)) {
376: $returnhash{$what} = $response;
377: } else {
378: $whatneeded{$what} = 1;
379: }
380: }
381: if (keys(%whatneeded) == 0) {
382: $result = 'ok';
383: } else {
384: my $requested = &freeze_escape(\%whatneeded);
385: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
386: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
387: ($rep eq 'unknown_cmd')) {
388: $result = $rep;
389: } else {
390: $result = 'ok';
391: my @pairs=split(/\&/,$rep);
392: foreach my $item (@pairs) {
393: my ($key,$value)=split(/=/,$item,2);
394: my $what = &unescape($key);
395: my $hashid = $lonhost.'-'.$what;
396: $returnhash{$what}=&thaw_unescape($value);
397: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
398: }
399: }
400: }
401: }
402: return ($result,\%returnhash);
403: }
404:
405: sub remote_devalidate_cache {
406: my ($lonhost,$cachekeys) = @_;
407: my $items;
408: return unless (ref($cachekeys) eq 'ARRAY');
409: my $cachestr = join('&',@{$cachekeys});
410: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
411: return $response;
412: }
413:
414: # -------------------------------------------------- Non-critical communication
415: sub subreply {
416: my ($cmd,$server)=@_;
417: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
418: #
419: # With loncnew process trimming, there's a timing hole between lonc server
420: # process exit and the master server picking up the listen on the AF_UNIX
421: # socket. In that time interval, a lock file will exist:
422:
423: my $lockfile=$peerfile.".lock";
424: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
425: sleep(0.1);
426: }
427: # At this point, either a loncnew parent is listening or an old lonc
428: # or loncnew child is listening so we can connect or everything's dead.
429: #
430: # We'll give the connection a few tries before abandoning it. If
431: # connection is not possible, we'll con_lost back to the client.
432: #
433: my $client;
434: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
435: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
436: Type => SOCK_STREAM,
437: Timeout => 10);
438: if ($client) {
439: last; # Connected!
440: } else {
441: &create_connection(&hostname($server),$server);
442: }
443: sleep(0.1); # Try again later if failed connection.
444: }
445: my $answer;
446: if ($client) {
447: print $client "sethost:$server:$cmd\n";
448: $answer=<$client>;
449: if (!$answer) { $answer="con_lost"; }
450: chomp($answer);
451: } else {
452: $answer = 'con_lost'; # Failed connection.
453: }
454: return $answer;
455: }
456:
457: sub reply {
458: my ($cmd,$server)=@_;
459: unless (defined(&hostname($server))) { return 'no_such_host'; }
460: my $answer=subreply($cmd,$server);
461: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
462: my $logged = $cmd;
463: if ($cmd =~ /^encrypt:([^:]+):/) {
464: my $subcmd = $1;
465: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
466: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
467: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades')) {
468: (undef,undef,my @rest) = split(/:/,$cmd);
469: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
470: splice(@rest,2,1,'Hidden');
471: } elsif ($subcmd eq 'passwd') {
472: splice(@rest,2,2,('Hidden','Hidden'));
473: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
474: ($subcmd eq 'autoexportgrades')) {
475: splice(@rest,3,1,'Hidden');
476: }
477: $logged = join(':',('encrypt:'.$subcmd,@rest));
478: }
479: }
480: &logthis("<font color=\"blue\">WARNING:".
481: " $logged to $server returned $answer</font>");
482: }
483: return $answer;
484: }
485:
486: # ----------------------------------------------------------- Send USR1 to lonc
487:
488: sub reconlonc {
489: my ($lonid) = @_;
490: if ($lonid) {
491: my $hostname = &hostname($lonid);
492: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
493: if ($hostname && -e $peerfile) {
494: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
495: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
496: Type => SOCK_STREAM,
497: Timeout => 10);
498: if ($client) {
499: print $client ("reset_retries\n");
500: my $answer=<$client>;
501: #reset just this one.
502: }
503: }
504: return;
505: }
506:
507: &logthis("Trying to reconnect lonc");
508: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
509: if (open(my $fh,"<",$loncfile)) {
510: my $loncpid=<$fh>;
511: chomp($loncpid);
512: if (kill 0 => $loncpid) {
513: &logthis("lonc at pid $loncpid responding, sending USR1");
514: kill USR1 => $loncpid;
515: sleep 1;
516: } else {
517: &logthis(
518: "<font color=\"blue\">WARNING:".
519: " lonc at pid $loncpid not responding, giving up</font>");
520: }
521: } else {
522: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
523: }
524: }
525:
526: # ------------------------------------------------------ Critical communication
527:
528: sub critical {
529: my ($cmd,$server)=@_;
530: unless (&hostname($server)) {
531: &logthis("<font color=\"blue\">WARNING:".
532: " Critical message to unknown server ($server)</font>");
533: return 'no_such_host';
534: }
535: my $answer=reply($cmd,$server);
536: if ($answer eq 'con_lost') {
537: &reconlonc($server);
538: my $answer=reply($cmd,$server);
539: if ($answer eq 'con_lost') {
540: my $now=time;
541: my $middlename=$cmd;
542: $middlename=substr($middlename,0,16);
543: $middlename=~s/\W//g;
544: my $dfilename=
545: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
546: $dumpcount++;
547: {
548: my $dfh;
549: if (open($dfh,">",$dfilename)) {
550: print $dfh "$cmd\n";
551: close($dfh);
552: }
553: }
554: sleep 1;
555: my $wcmd='';
556: {
557: my $dfh;
558: if (open($dfh,"<",$dfilename)) {
559: $wcmd=<$dfh>;
560: close($dfh);
561: }
562: }
563: chomp($wcmd);
564: if ($wcmd eq $cmd) {
565: &logthis("<font color=\"blue\">WARNING: ".
566: "Connection buffer $dfilename: $cmd</font>");
567: &logperm("D:$server:$cmd");
568: return 'con_delayed';
569: } else {
570: &logthis("<font color=\"red\">CRITICAL:"
571: ." Critical connection failed: $server $cmd</font>");
572: &logperm("F:$server:$cmd");
573: return 'con_failed';
574: }
575: }
576: }
577: return $answer;
578: }
579:
580: # ------------------------------------------- check if return value is an error
581:
582: sub error {
583: my ($result) = @_;
584: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
585: if ($2 == 2) { return undef; }
586: return $1;
587: }
588: return undef;
589: }
590:
591: sub convert_and_load_session_env {
592: my ($lonidsdir,$handle)=@_;
593: my @profile;
594: {
595: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
596: if (!$opened) {
597: return 0;
598: }
599: flock($idf,LOCK_SH);
600: @profile=<$idf>;
601: close($idf);
602: }
603: my %temp_env;
604: foreach my $line (@profile) {
605: if ($line !~ m/=/) {
606: return 0;
607: }
608: chomp($line);
609: my ($envname,$envvalue)=split(/=/,$line,2);
610: $temp_env{&unescape($envname)} = &unescape($envvalue);
611: }
612: unlink("$lonidsdir/$handle.id");
613: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
614: 0640)) {
615: %disk_env = %temp_env;
616: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
617: untie(%disk_env);
618: }
619: return 1;
620: }
621:
622: # ------------------------------------------- Transfer profile into environment
623: my $env_loaded;
624: sub transfer_profile_to_env {
625: my ($lonidsdir,$handle,$force_transfer) = @_;
626: if (!$force_transfer && $env_loaded) { return; }
627:
628: if (!defined($lonidsdir)) {
629: $lonidsdir = $perlvar{'lonIDsDir'};
630: }
631: if (!defined($handle)) {
632: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
633: }
634:
635: my $convert;
636: {
637: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
638: if (!$opened) {
639: return;
640: }
641: flock($idf,LOCK_SH);
642: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
643: &GDBM_READER(),0640)) {
644: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
645: untie(%disk_env);
646: } else {
647: $convert = 1;
648: }
649: }
650: if ($convert) {
651: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
652: &logthis("Failed to load session, or convert session.");
653: }
654: }
655:
656: my %remove;
657: while ( my $envname = each(%env) ) {
658: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
659: if ($time < time-300) {
660: $remove{$key}++;
661: }
662: }
663: }
664:
665: $env{'user.environment'} = "$lonidsdir/$handle.id";
666: $env_loaded=1;
667: foreach my $expired_key (keys(%remove)) {
668: &delenv($expired_key);
669: }
670: }
671:
672: # ---------------------------------------------------- Check for valid session
673: sub check_for_valid_session {
674: my ($r,$name,$userhashref,$domref) = @_;
675: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
676: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
677: if ($name eq 'lonDAV') {
678: $lonidsdir=$r->dir_config('lonDAVsessDir');
679: } else {
680: $lonidsdir=$r->dir_config('lonIDsDir');
681: if ($name eq '') {
682: $name = 'lonID';
683: }
684: }
685: if ($name eq 'lonID') {
686: $secure = 'lonSID';
687: $linkname = 'lonLinkID';
688: $pubname = 'lonPubID';
689: if (exists($cookies{$secure})) {
690: $lonid=$cookies{$secure};
691: } elsif (exists($cookies{$name})) {
692: $lonid=$cookies{$name};
693: } elsif (exists($cookies{$linkname})) {
694: $lonid=$cookies{$linkname};
695: } elsif (exists($cookies{$pubname})) {
696: $lonid=$cookies{$pubname};
697: }
698: } else {
699: $lonid=$cookies{$name};
700: }
701: return undef if (!$lonid);
702:
703: my $handle=&LONCAPA::clean_handle($lonid->value);
704: if (-l "$lonidsdir/$handle.id") {
705: my $link = readlink("$lonidsdir/$handle.id");
706: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
707: $handle = $1;
708: }
709: }
710: if (!-e "$lonidsdir/$handle.id") {
711: if ((ref($domref)) && ($name eq 'lonID') &&
712: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
713: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
714: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
715: $$domref = $possudom;
716: }
717: }
718: return undef;
719: }
720:
721: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
722: return undef if (!$opened);
723:
724: flock($idf,LOCK_SH);
725: my %disk_env;
726: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
727: &GDBM_READER(),0640)) {
728: return undef;
729: }
730:
731: if (!defined($disk_env{'user.name'})
732: || !defined($disk_env{'user.domain'})) {
733: untie(%disk_env);
734: return undef;
735: }
736:
737: if (ref($userhashref) eq 'HASH') {
738: $userhashref->{'name'} = $disk_env{'user.name'};
739: $userhashref->{'domain'} = $disk_env{'user.domain'};
740: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
741: if ($userhashref->{'lti'}) {
742: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
743: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
744: }
745: }
746: untie(%disk_env);
747:
748: return $handle;
749: }
750:
751: sub timed_flock {
752: my ($file,$lock_type) = @_;
753: my $failed=0;
754: eval {
755: local $SIG{__DIE__}='DEFAULT';
756: local $SIG{ALRM}=sub {
757: $failed=1;
758: die("failed lock");
759: };
760: alarm(13);
761: flock($file,$lock_type);
762: alarm(0);
763: };
764: if ($failed) {
765: return undef;
766: } else {
767: return 1;
768: }
769: }
770:
771: sub get_sessionfile_vars {
772: my ($handle,$lonidsdir,$storearr) = @_;
773: my %returnhash;
774: unless (ref($storearr) eq 'ARRAY') {
775: return %returnhash;
776: }
777: if (-l "$lonidsdir/$handle.id") {
778: my $link = readlink("$lonidsdir/$handle.id");
779: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
780: $handle = $1;
781: }
782: }
783: if ((-e "$lonidsdir/$handle.id") &&
784: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
785: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
786: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
787: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
788: flock($idf,LOCK_SH);
789: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
790: &GDBM_READER(),0640)) {
791: foreach my $item (@{$storearr}) {
792: $returnhash{$item} = $disk_env{$item};
793: }
794: untie(%disk_env);
795: }
796: }
797: }
798: }
799: return %returnhash;
800: }
801:
802: # ---------------------------------------------------------- Append Environment
803:
804: sub appenv {
805: my ($newenv,$roles) = @_;
806: if (ref($newenv) eq 'HASH') {
807: foreach my $key (keys(%{$newenv})) {
808: my $refused = 0;
809: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
810: $refused = 1;
811: if (ref($roles) eq 'ARRAY') {
812: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
813: if (grep(/^\Q$role\E$/,@{$roles})) {
814: $refused = 0;
815: }
816: }
817: }
818: if ($refused) {
819: &logthis("<font color=\"blue\">WARNING: ".
820: "Attempt to modify environment ".$key." to ".$newenv->{$key}
821: .'</font>');
822: delete($newenv->{$key});
823: } else {
824: $env{$key}=$newenv->{$key};
825: }
826: }
827: my $lonids = $perlvar{'lonIDsDir'};
828: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
829: my $opened = open(my $env_file,'+<',$env{'user.environment'});
830: if ($opened
831: && &timed_flock($env_file,LOCK_EX)
832: &&
833: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
834: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
835: while (my ($key,$value) = each(%{$newenv})) {
836: $disk_env{$key} = $value;
837: }
838: untie(%disk_env);
839: }
840: }
841: }
842: return 'ok';
843: }
844: # ----------------------------------------------------- Delete from Environment
845:
846: sub delenv {
847: my ($delthis,$regexp,$roles) = @_;
848: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
849: my $refused = 1;
850: if (ref($roles) eq 'ARRAY') {
851: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
852: if (grep(/^\Q$role\E$/,@{$roles})) {
853: $refused = 0;
854: }
855: }
856: if ($refused) {
857: &logthis("<font color=\"blue\">WARNING: ".
858: "Attempt to delete from environment ".$delthis);
859: return 'error';
860: }
861: }
862: my $opened = open(my $env_file,'+<',$env{'user.environment'});
863: if ($opened
864: && &timed_flock($env_file,LOCK_EX)
865: &&
866: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
867: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
868: foreach my $key (keys(%disk_env)) {
869: if ($regexp) {
870: if ($key=~/^$delthis/) {
871: delete($env{$key});
872: delete($disk_env{$key});
873: }
874: } else {
875: if ($key=~/^\Q$delthis\E/) {
876: delete($env{$key});
877: delete($disk_env{$key});
878: }
879: }
880: }
881: untie(%disk_env);
882: }
883: return 'ok';
884: }
885:
886: sub get_env_multiple {
887: my ($name) = @_;
888: my @values;
889: if (defined($env{$name})) {
890: # exists is it an array
891: if (ref($env{$name})) {
892: @values=@{ $env{$name} };
893: } else {
894: $values[0]=$env{$name};
895: }
896: }
897: return(@values);
898: }
899:
900: # ------------------------------------------------------------------- Locking
901:
902: sub set_lock {
903: my ($text)=@_;
904: $locknum++;
905: my $id=$$.'-'.$locknum;
906: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
907: 'session.lock.'.$id => $text});
908: return $id;
909: }
910:
911: sub get_locks {
912: my $num=0;
913: my %texts=();
914: foreach my $lock (split(/\,/,$env{'session.locks'})) {
915: if ($lock=~/\w/) {
916: $num++;
917: $texts{$lock}=$env{'session.lock.'.$lock};
918: }
919: }
920: return ($num,%texts);
921: }
922:
923: sub remove_lock {
924: my ($id)=@_;
925: my $newlocks='';
926: foreach my $lock (split(/\,/,$env{'session.locks'})) {
927: if (($lock=~/\w/) && ($lock ne $id)) {
928: $newlocks.=','.$lock;
929: }
930: }
931: &appenv({'session.locks' => $newlocks});
932: &delenv('session.lock.'.$id);
933: }
934:
935: sub remove_all_locks {
936: my $activelocks=$env{'session.locks'};
937: foreach my $lock (split(/\,/,$env{'session.locks'})) {
938: if ($lock=~/\w/) {
939: &remove_lock($lock);
940: }
941: }
942: }
943:
944:
945: # ------------------------------------------ Find out current server userload
946: sub userload {
947: my $numusers=0;
948: {
949: opendir(LONIDS,$perlvar{'lonIDsDir'});
950: my $filename;
951: my $curtime=time;
952: while ($filename=readdir(LONIDS)) {
953: next if ($filename eq '.' || $filename eq '..');
954: next if ($filename =~ /publicuser_\d+\.id/);
955: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
956: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
957: if ($curtime-$mtime < 1800) { $numusers++; }
958: }
959: closedir(LONIDS);
960: }
961: my $userloadpercent=0;
962: my $maxuserload=$perlvar{'lonUserLoadLim'};
963: if ($maxuserload) {
964: $userloadpercent=100*$numusers/$maxuserload;
965: }
966: $userloadpercent=sprintf("%.2f",$userloadpercent);
967: return $userloadpercent;
968: }
969:
970: # ------------------------------ Find server with least workload from spare.tab
971:
972: sub spareserver {
973: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
974: my $spare_server;
975: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
976: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
977: : $userloadpercent;
978: my ($uint_dom,$remotesessions);
979: if (($udom ne '') && (&domain($udom) ne '')) {
980: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
981: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
982: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
983: $remotesessions = $udomdefaults{'remotesessions'};
984: }
985: my $spareshash = &this_host_spares($udom);
986: if (ref($spareshash) eq 'HASH') {
987: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
988: foreach my $try_server (@{ $spareshash->{'primary'} }) {
989: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
990: $try_server));
991: ($spare_server, $lowest_load) =
992: &compare_server_load($try_server, $spare_server, $lowest_load);
993: }
994: }
995:
996: my $found_server = ($spare_server ne '' && $lowest_load < 100);
997:
998: if (!$found_server) {
999: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1000: foreach my $try_server (@{ $spareshash->{'default'} }) {
1001: next unless (&spare_can_host($udom,$uint_dom,
1002: $remotesessions,$try_server));
1003: ($spare_server, $lowest_load) =
1004: &compare_server_load($try_server, $spare_server, $lowest_load);
1005: }
1006: }
1007: }
1008: }
1009:
1010: if (!$want_server_name) {
1011: if (defined($spare_server)) {
1012: my $hostname = &hostname($spare_server);
1013: if (defined($hostname)) {
1014: my $protocol = 'http';
1015: if ($protocol{$spare_server} eq 'https') {
1016: $protocol = $protocol{$spare_server};
1017: }
1018: $spare_server = $protocol.'://'.$hostname;
1019: }
1020: }
1021: }
1022: return $spare_server;
1023: }
1024:
1025: sub compare_server_load {
1026: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1027:
1028: if ($required) {
1029: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1030: my $remoterev = &get_server_loncaparev(undef,$try_server);
1031: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1032: if (($major eq '' && $minor eq '') ||
1033: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1034: return ($spare_server,$lowest_load);
1035: }
1036: }
1037:
1038: my $loadans = &reply('load', $try_server);
1039: my $userloadans = &reply('userload',$try_server);
1040:
1041: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1042: return ($spare_server, $lowest_load); #didn't get a number from the server
1043: }
1044:
1045: my $load;
1046: if ($loadans =~ /\d/) {
1047: if ($userloadans =~ /\d/) {
1048: #both are numbers, pick the bigger one
1049: $load = ($loadans > $userloadans) ? $loadans
1050: : $userloadans;
1051: } else {
1052: $load = $loadans;
1053: }
1054: } else {
1055: $load = $userloadans;
1056: }
1057:
1058: if (($load =~ /\d/) && ($load < $lowest_load)) {
1059: $spare_server = $try_server;
1060: $lowest_load = $load;
1061: }
1062: return ($spare_server,$lowest_load);
1063: }
1064:
1065: # --------------------------- ask offload servers if user already has a session
1066: sub find_existing_session {
1067: my ($udom,$uname) = @_;
1068: my $spareshash = &this_host_spares($udom);
1069: if (ref($spareshash) eq 'HASH') {
1070: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1071: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1072: return $try_server if (&has_user_session($try_server, $udom, $uname));
1073: }
1074: }
1075: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1076: foreach my $try_server (@{ $spareshash->{'default'} }) {
1077: return $try_server if (&has_user_session($try_server, $udom, $uname));
1078: }
1079: }
1080: }
1081: return;
1082: }
1083:
1084: # check if user's browser sent load balancer cookie and server still has session
1085: # and is not overloaded.
1086: sub check_for_balancer_cookie {
1087: my ($r,$update_mtime) = @_;
1088: my ($otherserver,$cookie);
1089: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1090: if (exists($cookies{'balanceID'})) {
1091: my $balid = $cookies{'balanceID'};
1092: $cookie=&LONCAPA::clean_handle($balid->value);
1093: my $balancedir=$r->dir_config('lonBalanceDir');
1094: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1095: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1096: my ($possudom,$possuname) = ($1,$2);
1097: my $has_session = 0;
1098: if ((&domain($possudom) ne '') &&
1099: (&homeserver($possuname,$possudom) ne 'no_host')) {
1100: my $try_server;
1101: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1102: if ($opened) {
1103: flock($idf,LOCK_SH);
1104: while (my $line = <$idf>) {
1105: chomp($line);
1106: if (&hostname($line) ne '') {
1107: $try_server = $line;
1108: last;
1109: }
1110: }
1111: close($idf);
1112: if (($try_server) &&
1113: (&has_user_session($try_server,$possudom,$possuname))) {
1114: my $lowest_load = 30000;
1115: ($otherserver,$lowest_load) =
1116: &compare_server_load($try_server,undef,$lowest_load);
1117: if ($otherserver ne '' && $lowest_load < 100) {
1118: $has_session = 1;
1119: } else {
1120: undef($otherserver);
1121: }
1122: }
1123: }
1124: }
1125: if ($has_session) {
1126: if ($update_mtime) {
1127: my $atime = my $mtime = time;
1128: utime($atime,$mtime,"$balancedir/$cookie.id");
1129: }
1130: } else {
1131: unlink("$balancedir/$cookie.id");
1132: }
1133: }
1134: }
1135: }
1136: return ($otherserver,$cookie);
1137: }
1138:
1139: sub delbalcookie {
1140: my ($cookie,$balancer) =@_;
1141: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1142: my ($udom,$uname) = ($1,$2);
1143: my $uprimary_id = &domain($udom,'primary');
1144: my $uintdom = &internet_dom($uprimary_id);
1145: my $intdom = &internet_dom($balancer);
1146: my $serverhomedom = &host_domain($balancer);
1147: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1148: return &reply("delbalcookie:$cookie",$balancer);
1149: }
1150: }
1151: }
1152:
1153: # -------------------------------- ask if server already has a session for user
1154: sub has_user_session {
1155: my ($lonid,$udom,$uname) = @_;
1156: my $result = &reply(join(':','userhassession',
1157: map {&escape($_)} ($udom,$uname)),$lonid);
1158: return 1 if ($result eq 'ok');
1159:
1160: return 0;
1161: }
1162:
1163: # --------- determine least loaded server in a user's domain which allows login
1164:
1165: sub choose_server {
1166: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1167: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1168: my %servers = &get_servers($udom);
1169: my $lowest_load = 30000;
1170: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1171: if ($skiploadbal) {
1172: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1173: unless (defined($cached)) {
1174: my $cachetime = 60*60*24;
1175: my %domconfig =
1176: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1177: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1178: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1179: $cachetime);
1180: }
1181: }
1182: }
1183: foreach my $lonhost (keys(%servers)) {
1184: if ($skiploadbal) {
1185: if (ref($balancers) eq 'HASH') {
1186: next if (exists($balancers->{$lonhost}));
1187: }
1188: }
1189: my $loginvia;
1190: if ($checkloginvia) {
1191: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1192: if ($loginvia) {
1193: my ($server,$path) = split(/:/,$loginvia);
1194: ($login_host, $lowest_load) =
1195: &compare_server_load($server, $login_host, $lowest_load, $required);
1196: if ($login_host eq $server) {
1197: $portal_path = $path;
1198: $isredirect = 1;
1199: }
1200: } else {
1201: ($login_host, $lowest_load) =
1202: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1203: if ($login_host eq $lonhost) {
1204: $portal_path = '';
1205: $isredirect = '';
1206: }
1207: }
1208: } else {
1209: ($login_host, $lowest_load) =
1210: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1211: }
1212: }
1213: if ($login_host ne '') {
1214: $hostname = &hostname($login_host);
1215: }
1216: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1217: }
1218:
1219: # --------------------------------------------- Try to change a user's password
1220:
1221: sub changepass {
1222: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1223: $currentpass = &escape($currentpass);
1224: $newpass = &escape($newpass);
1225: my $lonhost = $perlvar{'lonHostID'};
1226: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1227: $server);
1228: if (! $answer) {
1229: &logthis("No reply on password change request to $server ".
1230: "by $uname in domain $udom.");
1231: } elsif ($answer =~ "^ok") {
1232: &logthis("$uname in $udom successfully changed their password ".
1233: "on $server.");
1234: } elsif ($answer =~ "^pwchange_failure") {
1235: &logthis("$uname in $udom was unable to change their password ".
1236: "on $server. The action was blocked by either lcpasswd ".
1237: "or pwchange");
1238: } elsif ($answer =~ "^non_authorized") {
1239: &logthis("$uname in $udom did not get their password correct when ".
1240: "attempting to change it on $server.");
1241: } elsif ($answer =~ "^auth_mode_error") {
1242: &logthis("$uname in $udom attempted to change their password despite ".
1243: "not being locally or internally authenticated on $server.");
1244: } elsif ($answer =~ "^unknown_user") {
1245: &logthis("$uname in $udom attempted to change their password ".
1246: "on $server but were unable to because $server is not ".
1247: "their home server.");
1248: } elsif ($answer =~ "^refused") {
1249: &logthis("$server refused to change $uname in $udom password because ".
1250: "it was sent an unencrypted request to change the password.");
1251: } elsif ($answer =~ "invalid_client") {
1252: &logthis("$server refused to change $uname in $udom password because ".
1253: "it was a reset by e-mail originating from an invalid server.");
1254: }
1255: return $answer;
1256: }
1257:
1258: # ----------------------- Try to determine user's current authentication scheme
1259:
1260: sub queryauthenticate {
1261: my ($uname,$udom)=@_;
1262: my $uhome=&homeserver($uname,$udom);
1263: if (!$uhome) {
1264: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1265: return 'no_host';
1266: }
1267: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1268: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1269: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1270: }
1271: return $answer;
1272: }
1273:
1274: # --------- Try to authenticate user from domain's lib servers (first this one)
1275:
1276: sub authenticate {
1277: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1278: $upass=&escape($upass);
1279: $uname= &LONCAPA::clean_username($uname);
1280: my $uhome=&homeserver($uname,$udom,1);
1281: my $newhome;
1282: if ((!$uhome) || ($uhome eq 'no_host')) {
1283: # Maybe the machine was offline and only re-appeared again recently?
1284: &reconlonc();
1285: # One more
1286: $uhome=&homeserver($uname,$udom,1);
1287: if (($uhome eq 'no_host') && $checkdefauth) {
1288: if (defined(&domain($udom,'primary'))) {
1289: $newhome=&domain($udom,'primary');
1290: }
1291: if ($newhome ne '') {
1292: $uhome = $newhome;
1293: }
1294: }
1295: if ((!$uhome) || ($uhome eq 'no_host')) {
1296: &logthis("User $uname at $udom is unknown in authenticate");
1297: return 'no_host';
1298: }
1299: }
1300: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1301: if ($answer eq 'authorized') {
1302: if ($newhome) {
1303: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1304: return 'no_account_on_host';
1305: } else {
1306: &logthis("User $uname at $udom authorized by $uhome");
1307: return $uhome;
1308: }
1309: }
1310: if ($answer eq 'non_authorized') {
1311: &logthis("User $uname at $udom rejected by $uhome");
1312: return 'no_host';
1313: }
1314: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1315: return 'no_host';
1316: }
1317:
1318: sub can_host_session {
1319: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1320: my $canhost = 1;
1321: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1322: if (ref($remotesessions) eq 'HASH') {
1323: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1324: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1325: $canhost = 0;
1326: } else {
1327: $canhost = 1;
1328: }
1329: }
1330: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1331: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1332: $canhost = 1;
1333: } else {
1334: $canhost = 0;
1335: }
1336: }
1337: if ($canhost) {
1338: if ($remotesessions->{'version'} ne '') {
1339: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1340: if ($reqmajor ne '' && $reqminor ne '') {
1341: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1342: my $major = $1;
1343: my $minor = $2;
1344: if (($major < $reqmajor ) ||
1345: (($major == $reqmajor) && ($minor < $reqminor))) {
1346: $canhost = 0;
1347: }
1348: } else {
1349: $canhost = 0;
1350: }
1351: }
1352: }
1353: }
1354: }
1355: if ($canhost) {
1356: if (ref($hostedsessions) eq 'HASH') {
1357: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1358: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1359: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1360: if (($uint_dom ne '') &&
1361: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1362: $canhost = 0;
1363: } else {
1364: $canhost = 1;
1365: }
1366: }
1367: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1368: if (($uint_dom ne '') &&
1369: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1370: $canhost = 1;
1371: } else {
1372: $canhost = 0;
1373: }
1374: }
1375: }
1376: }
1377: return $canhost;
1378: }
1379:
1380: sub spare_can_host {
1381: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1382: my $canhost=1;
1383: my $try_server_hostname = &hostname($try_server);
1384: my $serverhomeID = &get_server_homeID($try_server_hostname);
1385: my $serverhomedom = &host_domain($serverhomeID);
1386: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1387: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1388: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1389: $canhost = 0;
1390: }
1391: }
1392: if (($canhost) && ($uint_dom)) {
1393: my @intdoms;
1394: my $internet_names = &get_internet_names($try_server);
1395: if (ref($internet_names) eq 'ARRAY') {
1396: @intdoms = @{$internet_names};
1397: }
1398: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1399: my $remoterev = &get_server_loncaparev(undef,$try_server);
1400: $canhost = &can_host_session($udom,$try_server,$remoterev,
1401: $remotesessions,
1402: $defdomdefaults{'hostedsessions'});
1403: }
1404: }
1405: return $canhost;
1406: }
1407:
1408: sub this_host_spares {
1409: my ($dom) = @_;
1410: my ($dom_in_use,$lonhost_in_use,$result);
1411: my @hosts = ¤t_machine_ids();
1412: foreach my $lonhost (@hosts) {
1413: if (&host_domain($lonhost) eq $dom) {
1414: $dom_in_use = $dom;
1415: $lonhost_in_use = $lonhost;
1416: last;
1417: }
1418: }
1419: if ($dom_in_use ne '') {
1420: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1421: }
1422: if (ref($result) ne 'HASH') {
1423: $lonhost_in_use = $perlvar{'lonHostID'};
1424: $dom_in_use = &host_domain($lonhost_in_use);
1425: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1426: if (ref($result) ne 'HASH') {
1427: $result = \%spareid;
1428: }
1429: }
1430: return $result;
1431: }
1432:
1433: sub spares_for_offload {
1434: my ($dom_in_use,$lonhost_in_use) = @_;
1435: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1436: if (defined($cached)) {
1437: return $result;
1438: } else {
1439: my $cachetime = 60*60*24;
1440: my %domconfig =
1441: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1442: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1443: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1444: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1445: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1446: }
1447: }
1448: }
1449: }
1450: return;
1451: }
1452:
1453: sub get_lonbalancer_config {
1454: my ($servers) = @_;
1455: my ($currbalancer,$currtargets);
1456: if (ref($servers) eq 'HASH') {
1457: foreach my $server (keys(%{$servers})) {
1458: my %what = (
1459: spareid => 1,
1460: perlvar => 1,
1461: );
1462: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1463: if ($result eq 'ok') {
1464: if (ref($returnhash) eq 'HASH') {
1465: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1466: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1467: $currbalancer = $server;
1468: $currtargets = {};
1469: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1470: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1471: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1472: }
1473: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1474: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1475: }
1476: }
1477: last;
1478: }
1479: }
1480: }
1481: }
1482: }
1483: }
1484: return ($currbalancer,$currtargets);
1485: }
1486:
1487: sub check_loadbalancing {
1488: my ($uname,$udom,$caller) = @_;
1489: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1490: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1491: my $lonhost = $perlvar{'lonHostID'};
1492: my @hosts = ¤t_machine_ids();
1493: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1494: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1495: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1496: my $serverhomedom = &host_domain($lonhost);
1497: my $domneedscache;
1498: my $cachetime = 60*60*24;
1499:
1500: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1501: $dom_in_use = $udom;
1502: $homeintdom = 1;
1503: } else {
1504: $dom_in_use = $serverhomedom;
1505: }
1506: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1507: unless (defined($cached)) {
1508: my %domconfig =
1509: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1510: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1511: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1512: } else {
1513: $domneedscache = $dom_in_use;
1514: }
1515: }
1516: if (ref($result) eq 'HASH') {
1517: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1518: &check_balancer_result($result,@hosts);
1519: if ($is_balancer) {
1520: if (ref($currrules) eq 'HASH') {
1521: if ($homeintdom) {
1522: if ($uname ne '') {
1523: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1524: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1525: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1526: $rule_in_effect = $currrules->{'_LC_author'};
1527: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1528: $rule_in_effect = $currrules->{'_LC_adv'}
1529: }
1530: }
1531: if ($rule_in_effect eq '') {
1532: my %userenv = &userenvironment($udom,$uname,'inststatus');
1533: if ($userenv{'inststatus'} ne '') {
1534: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1535: my ($othertitle,$usertypes,$types) =
1536: &Apache::loncommon::sorted_inst_types($udom);
1537: if (ref($types) eq 'ARRAY') {
1538: foreach my $type (@{$types}) {
1539: if (grep(/^\Q$type\E$/,@statuses)) {
1540: if (exists($currrules->{$type})) {
1541: $rule_in_effect = $currrules->{$type};
1542: }
1543: }
1544: }
1545: }
1546: } else {
1547: if (exists($currrules->{'default'})) {
1548: $rule_in_effect = $currrules->{'default'};
1549: }
1550: }
1551: }
1552: } else {
1553: if (exists($currrules->{'default'})) {
1554: $rule_in_effect = $currrules->{'default'};
1555: }
1556: }
1557: } else {
1558: if ($currrules->{'_LC_external'} ne '') {
1559: $rule_in_effect = $currrules->{'_LC_external'};
1560: }
1561: }
1562: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1563: $uname,$udom);
1564: }
1565: }
1566: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1567: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1568: unless (defined($cached)) {
1569: my %domconfig =
1570: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1571: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1572: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1573: } else {
1574: $domneedscache = $serverhomedom;
1575: }
1576: }
1577: if (ref($result) eq 'HASH') {
1578: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1579: &check_balancer_result($result,@hosts);
1580: if ($is_balancer) {
1581: if (ref($currrules) eq 'HASH') {
1582: if ($currrules->{'_LC_internetdom'} ne '') {
1583: $rule_in_effect = $currrules->{'_LC_internetdom'};
1584: }
1585: }
1586: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1587: $uname,$udom);
1588: }
1589: } else {
1590: if ($perlvar{'lonBalancer'} eq 'yes') {
1591: $is_balancer = 1;
1592: $offloadto = &this_host_spares($dom_in_use);
1593: }
1594: unless (defined($cached)) {
1595: $domneedscache = $serverhomedom;
1596: }
1597: }
1598: } else {
1599: if ($perlvar{'lonBalancer'} eq 'yes') {
1600: $is_balancer = 1;
1601: $offloadto = &this_host_spares($dom_in_use);
1602: }
1603: unless (defined($cached)) {
1604: $domneedscache = $serverhomedom;
1605: }
1606: }
1607: if ($domneedscache) {
1608: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1609: }
1610: if ($is_balancer) {
1611: my $lowest_load = 30000;
1612: if (ref($offloadto) eq 'HASH') {
1613: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1614: foreach my $try_server (@{$offloadto->{'primary'}}) {
1615: ($otherserver,$lowest_load) =
1616: &compare_server_load($try_server,$otherserver,$lowest_load);
1617: }
1618: }
1619: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1620:
1621: if (!$found_server) {
1622: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1623: foreach my $try_server (@{$offloadto->{'default'}}) {
1624: ($otherserver,$lowest_load) =
1625: &compare_server_load($try_server,$otherserver,$lowest_load);
1626: }
1627: }
1628: }
1629: } elsif (ref($offloadto) eq 'ARRAY') {
1630: if (@{$offloadto} == 1) {
1631: $otherserver = $offloadto->[0];
1632: } elsif (@{$offloadto} > 1) {
1633: foreach my $try_server (@{$offloadto}) {
1634: ($otherserver,$lowest_load) =
1635: &compare_server_load($try_server,$otherserver,$lowest_load);
1636: }
1637: }
1638: }
1639: unless ($caller eq 'login') {
1640: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1641: $is_balancer = 0;
1642: if ($uname ne '' && $udom ne '') {
1643: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1644: &appenv({'user.loadbalexempt' => $lonhost,
1645: 'user.loadbalcheck.time' => time});
1646: }
1647: }
1648: }
1649: }
1650: unless ($homeintdom) {
1651: undef($setcookie);
1652: }
1653: }
1654: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1655: }
1656:
1657: sub check_balancer_result {
1658: my ($result,@hosts) = @_;
1659: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1660: if (ref($result) eq 'HASH') {
1661: if ($result->{'lonhost'} ne '') {
1662: my $currbalancer = $result->{'lonhost'};
1663: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1664: $is_balancer = 1;
1665: $currtargets = $result->{'targets'};
1666: $currrules = $result->{'rules'};
1667: }
1668: $dom_balancers = $currbalancer;
1669: } else {
1670: if (keys(%{$result})) {
1671: foreach my $key (keys(%{$result})) {
1672: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1673: (ref($result->{$key}) eq 'HASH')) {
1674: $is_balancer = 1;
1675: $currrules = $result->{$key}{'rules'};
1676: $currtargets = $result->{$key}{'targets'};
1677: $setcookie = $result->{$key}{'cookie'};
1678: last;
1679: }
1680: }
1681: $dom_balancers = join(',',sort(keys(%{$result})));
1682: }
1683: }
1684: }
1685: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1686: }
1687:
1688: sub get_loadbalancer_targets {
1689: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1690: my $offloadto;
1691: if ($rule_in_effect eq 'none') {
1692: return [$perlvar{'lonHostID'}];
1693: } elsif ($rule_in_effect eq '') {
1694: $offloadto = $currtargets;
1695: } else {
1696: if ($rule_in_effect eq 'homeserver') {
1697: my $homeserver = &homeserver($uname,$udom);
1698: if ($homeserver ne 'no_host') {
1699: $offloadto = [$homeserver];
1700: }
1701: } elsif ($rule_in_effect eq 'externalbalancer') {
1702: my %domconfig =
1703: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1704: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1705: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1706: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1707: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1708: }
1709: }
1710: } else {
1711: my %servers = &internet_dom_servers($udom);
1712: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1713: if (&hostname($remotebalancer) ne '') {
1714: $offloadto = [$remotebalancer];
1715: }
1716: }
1717: } elsif (&hostname($rule_in_effect) ne '') {
1718: $offloadto = [$rule_in_effect];
1719: }
1720: }
1721: return $offloadto;
1722: }
1723:
1724: sub internet_dom_servers {
1725: my ($dom) = @_;
1726: my (%uniqservers,%servers);
1727: my $primaryserver = &hostname(&domain($dom,'primary'));
1728: my @machinedoms = &machine_domains($primaryserver);
1729: foreach my $mdom (@machinedoms) {
1730: my %currservers = %servers;
1731: my %server = &get_servers($mdom);
1732: %servers = (%currservers,%server);
1733: }
1734: my %by_hostname;
1735: foreach my $id (keys(%servers)) {
1736: push(@{$by_hostname{$servers{$id}}},$id);
1737: }
1738: foreach my $hostname (sort(keys(%by_hostname))) {
1739: if (@{$by_hostname{$hostname}} > 1) {
1740: my $match = 0;
1741: foreach my $id (@{$by_hostname{$hostname}}) {
1742: if (&host_domain($id) eq $dom) {
1743: $uniqservers{$id} = $hostname;
1744: $match = 1;
1745: }
1746: }
1747: unless ($match) {
1748: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1749: }
1750: } else {
1751: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1752: }
1753: }
1754: return %uniqservers;
1755: }
1756:
1757: sub trusted_domains {
1758: my ($cmdtype,$calldom) = @_;
1759: my ($trusted,$untrusted);
1760: if (&domain($calldom) eq '') {
1761: return ($trusted,$untrusted);
1762: }
1763: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1764: return ($trusted,$untrusted);
1765: }
1766: my $callprimary = &domain($calldom,'primary');
1767: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1768: if ($intcalldom eq '') {
1769: return ($trusted,$untrusted);
1770: }
1771:
1772: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1773: unless (defined($cached)) {
1774: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1775: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1776: $trustconfig = $domconfig{'trust'};
1777: }
1778: if (ref($trustconfig)) {
1779: my (%possexc,%possinc,@allexc,@allinc);
1780: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1781: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1782: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1783: }
1784: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1785: $possinc{$intcalldom} = 1;
1786: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1787: }
1788: }
1789: if (keys(%possexc)) {
1790: if (keys(%possinc)) {
1791: foreach my $key (sort(keys(%possexc))) {
1792: next if ($key eq $intcalldom);
1793: unless ($possinc{$key}) {
1794: push(@allexc,$key);
1795: }
1796: }
1797: } else {
1798: @allexc = sort(keys(%possexc));
1799: }
1800: }
1801: if (keys(%possinc)) {
1802: $possinc{$intcalldom} = 1;
1803: @allinc = sort(keys(%possinc));
1804: }
1805: if ((@allexc > 0) || (@allinc > 0)) {
1806: my %doms_by_intdom;
1807: my %allintdoms = &all_host_intdom();
1808: my %alldoms = &all_host_domain();
1809: foreach my $key (%allintdoms) {
1810: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1811: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1812: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1813: }
1814: } else {
1815: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1816: }
1817: }
1818: foreach my $exc (@allexc) {
1819: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1820: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1821: }
1822: }
1823: foreach my $inc (@allinc) {
1824: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1825: push(@{$trusted},@{$doms_by_intdom{$inc}});
1826: }
1827: }
1828: }
1829: }
1830: return ($trusted,$untrusted);
1831: }
1832:
1833: sub will_trust {
1834: my ($cmdtype,$domain,$possdom) = @_;
1835: return 1 if ($domain eq $possdom);
1836: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1837: my $willtrust;
1838: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1839: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1840: $willtrust = 1;
1841: }
1842: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1843: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1844: $willtrust = 1;
1845: }
1846: } else {
1847: $willtrust = 1;
1848: }
1849: return $willtrust;
1850: }
1851:
1852: # ---------------------- Find the homebase for a user from domain's lib servers
1853:
1854: my %homecache;
1855: sub homeserver {
1856: my ($uname,$udom,$ignoreBadCache)=@_;
1857: my $index="$uname:$udom";
1858:
1859: if (exists($homecache{$index})) { return $homecache{$index}; }
1860:
1861: my %servers = &get_servers($udom,'library');
1862: foreach my $tryserver (keys(%servers)) {
1863: next if ($ignoreBadCache ne 'true' &&
1864: exists($badServerCache{$tryserver}));
1865:
1866: my $answer=reply("home:$udom:$uname",$tryserver);
1867: if ($answer eq 'found') {
1868: delete($badServerCache{$tryserver});
1869: return $homecache{$index}=$tryserver;
1870: } elsif ($answer eq 'no_host') {
1871: $badServerCache{$tryserver}=1;
1872: }
1873: }
1874: return 'no_host';
1875: }
1876:
1877: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1878:
1879: sub idget {
1880: my ($udom,$idsref,$namespace)=@_;
1881: my %returnhash=();
1882: my @ids=();
1883: if (ref($idsref) eq 'ARRAY') {
1884: @ids = @{$idsref};
1885: } else {
1886: return %returnhash;
1887: }
1888: if ($namespace eq '') {
1889: $namespace = 'ids';
1890: }
1891:
1892: my %servers = &get_servers($udom,'library');
1893: foreach my $tryserver (keys(%servers)) {
1894: my $idlist=join('&', map { &escape($_); } @ids);
1895: if ($namespace eq 'ids') {
1896: $idlist=~tr/A-Z/a-z/;
1897: }
1898: my $reply;
1899: if ($namespace eq 'ids') {
1900: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1901: } else {
1902: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1903: }
1904: my @answer=();
1905: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1906: @answer=split(/\&/,$reply);
1907: } ;
1908: my $i;
1909: for ($i=0;$i<=$#ids;$i++) {
1910: if ($answer[$i]) {
1911: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1912: }
1913: }
1914: }
1915: return %returnhash;
1916: }
1917:
1918: # ------------------------------------- Find the IDs behind a list of usernames
1919:
1920: sub idrget {
1921: my ($udom,@unames)=@_;
1922: my %returnhash=();
1923: foreach my $uname (@unames) {
1924: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1925: }
1926: return %returnhash;
1927: }
1928:
1929: # Store away a list of names and associated student/employee IDs or clicker IDs
1930:
1931: sub idput {
1932: my ($udom,$idsref,$uhom,$namespace)=@_;
1933: my %servers=();
1934: my %ids=();
1935: my %byid = ();
1936: if (ref($idsref) eq 'HASH') {
1937: %ids=%{$idsref};
1938: }
1939: if ($namespace eq '') {
1940: $namespace = 'ids';
1941: }
1942: foreach my $uname (keys(%ids)) {
1943: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1944: if ($uhom eq '') {
1945: $uhom=&homeserver($uname,$udom);
1946: }
1947: if ($uhom ne 'no_host') {
1948: my $esc_unam=&escape($uname);
1949: if ($namespace eq 'ids') {
1950: my $id=&escape($ids{$uname});
1951: $id=~tr/A-Z/a-z/;
1952: my $esc_unam=&escape($uname);
1953: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1954: } else {
1955: my @currids = split(/,/,$ids{$uname});
1956: foreach my $id (@currids) {
1957: $byid{$uhom}{$id} .= $uname.',';
1958: }
1959: }
1960: }
1961: }
1962: if ($namespace eq 'clickers') {
1963: foreach my $server (keys(%byid)) {
1964: if (ref($byid{$server}) eq 'HASH') {
1965: foreach my $id (keys(%{$byid{$server}})) {
1966: $byid{$server} =~ s/,$//;
1967: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1968: }
1969: }
1970: }
1971: }
1972: foreach my $server (keys(%servers)) {
1973: $servers{$server} =~ s/\&$//;
1974: if ($namespace eq 'ids') {
1975: &critical('idput:'.$udom.':'.$servers{$server},$server);
1976: } else {
1977: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1978: }
1979: }
1980: }
1981:
1982: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1983:
1984: sub iddel {
1985: my ($udom,$idshashref,$uhome,$namespace)=@_;
1986: my %result=();
1987: my %ids=();
1988: my %byid = ();
1989: if (ref($idshashref) eq 'HASH') {
1990: %ids=%{$idshashref};
1991: } else {
1992: return %result;
1993: }
1994: if ($namespace eq '') {
1995: $namespace = 'ids';
1996: }
1997: my %servers=();
1998: while (my ($id,$unamestr) = each(%ids)) {
1999: if ($namespace eq 'ids') {
2000: my $uhom = $uhome;
2001: if ($uhom eq '') {
2002: $uhom=&homeserver($unamestr,$udom);
2003: }
2004: if ($uhom ne 'no_host') {
2005: $servers{$uhom}.='&'.&escape($id);
2006: }
2007: } else {
2008: my @curritems = split(/,/,$ids{$id});
2009: foreach my $uname (@curritems) {
2010: my $uhom = $uhome;
2011: if ($uhom eq '') {
2012: $uhom=&homeserver($uname,$udom);
2013: }
2014: if ($uhom ne 'no_host') {
2015: $byid{$uhom}{$id} .= $uname.',';
2016: }
2017: }
2018: }
2019: }
2020: if ($namespace eq 'clickers') {
2021: foreach my $server (keys(%byid)) {
2022: if (ref($byid{$server}) eq 'HASH') {
2023: foreach my $id (keys(%{$byid{$server}})) {
2024: $byid{$server}{$id} =~ s/,$//;
2025: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2026: }
2027: }
2028: }
2029: }
2030: foreach my $server (keys(%servers)) {
2031: $servers{$server} =~ s/\&$//;
2032: if ($namespace eq 'ids') {
2033: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2034: } elsif ($namespace eq 'clickers') {
2035: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2036: }
2037: }
2038: return %result;
2039: }
2040:
2041: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2042:
2043: sub updateclickers {
2044: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2045: my %clickers;
2046: if (ref($idshashref) eq 'HASH') {
2047: %clickers=%{$idshashref};
2048: } else {
2049: return;
2050: }
2051: my $items='';
2052: foreach my $item (keys(%clickers)) {
2053: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2054: }
2055: $items=~s/\&$//;
2056: my $request = "updateclickers:$udom:$action:$items";
2057: if ($critical) {
2058: return &critical($request,$uhome);
2059: } else {
2060: return &reply($request,$uhome);
2061: }
2062: }
2063:
2064: # ------------------------------dump from db file owned by domainconfig user
2065: sub dump_dom {
2066: my ($namespace, $udom, $regexp) = @_;
2067:
2068: $udom ||= $env{'user.domain'};
2069:
2070: return () unless $udom;
2071:
2072: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2073: }
2074:
2075: # ------------------------------------------ get items from domain db files
2076:
2077: sub get_dom {
2078: my ($namespace,$storearr,$udom,$uhome)=@_;
2079: return if ($udom eq 'public');
2080: my $items='';
2081: foreach my $item (@$storearr) {
2082: $items.=&escape($item).'&';
2083: }
2084: $items=~s/\&$//;
2085: if (!$udom) {
2086: $udom=$env{'user.domain'};
2087: return if ($udom eq 'public');
2088: if (defined(&domain($udom,'primary'))) {
2089: $uhome=&domain($udom,'primary');
2090: } else {
2091: undef($uhome);
2092: }
2093: } else {
2094: if (!$uhome) {
2095: if (defined(&domain($udom,'primary'))) {
2096: $uhome=&domain($udom,'primary');
2097: }
2098: }
2099: }
2100: if ($udom && $uhome && ($uhome ne 'no_host')) {
2101: my $rep;
2102: if ($namespace =~ /^enc/) {
2103: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2104: } else {
2105: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2106: }
2107: my %returnhash;
2108: if ($rep eq '' || $rep =~ /^error: 2 /) {
2109: return %returnhash;
2110: }
2111: my @pairs=split(/\&/,$rep);
2112: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2113: return @pairs;
2114: }
2115: my $i=0;
2116: foreach my $item (@$storearr) {
2117: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2118: $i++;
2119: }
2120: return %returnhash;
2121: } else {
2122: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2123: }
2124: }
2125:
2126: # -------------------------------------------- put items in domain db files
2127:
2128: sub put_dom {
2129: my ($namespace,$storehash,$udom,$uhome)=@_;
2130: if (!$udom) {
2131: $udom=$env{'user.domain'};
2132: if (defined(&domain($udom,'primary'))) {
2133: $uhome=&domain($udom,'primary');
2134: } else {
2135: undef($uhome);
2136: }
2137: } else {
2138: if (!$uhome) {
2139: if (defined(&domain($udom,'primary'))) {
2140: $uhome=&domain($udom,'primary');
2141: }
2142: }
2143: }
2144: if ($udom && $uhome && ($uhome ne 'no_host')) {
2145: my $items='';
2146: foreach my $item (keys(%$storehash)) {
2147: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2148: }
2149: $items=~s/\&$//;
2150: if ($namespace =~ /^enc/) {
2151: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2152: } else {
2153: return &reply("putdom:$udom:$namespace:$items",$uhome);
2154: }
2155: } else {
2156: &logthis("put_dom failed - no homeserver and/or domain");
2157: }
2158: }
2159:
2160: # --------------------- newput for items in db file owned by domainconfig user
2161: sub newput_dom {
2162: my ($namespace,$storehash,$udom) = @_;
2163: my $result;
2164: if (!$udom) {
2165: $udom=$env{'user.domain'};
2166: }
2167: if ($udom) {
2168: my $uname = &get_domainconfiguser($udom);
2169: $result = &newput($namespace,$storehash,$udom,$uname);
2170: }
2171: return $result;
2172: }
2173:
2174: # --------------------- delete for items in db file owned by domainconfig user
2175: sub del_dom {
2176: my ($namespace,$storearr,$udom)=@_;
2177: if (ref($storearr) eq 'ARRAY') {
2178: if (!$udom) {
2179: $udom=$env{'user.domain'};
2180: }
2181: if ($udom) {
2182: my $uname = &get_domainconfiguser($udom);
2183: return &del($namespace,$storearr,$udom,$uname);
2184: }
2185: }
2186: }
2187:
2188: # ----------------------------------construct domainconfig user for a domain
2189: sub get_domainconfiguser {
2190: my ($udom) = @_;
2191: return $udom.'-domainconfig';
2192: }
2193:
2194: sub retrieve_inst_usertypes {
2195: my ($udom) = @_;
2196: my (%returnhash,@order);
2197: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2198: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2199: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2200: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2201: } else {
2202: if (defined(&domain($udom,'primary'))) {
2203: my $uhome=&domain($udom,'primary');
2204: my $rep=&reply("inst_usertypes:$udom",$uhome);
2205: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2206: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2207: return (\%returnhash,\@order);
2208: }
2209: my ($hashitems,$orderitems) = split(/:/,$rep);
2210: my @pairs=split(/\&/,$hashitems);
2211: foreach my $item (@pairs) {
2212: my ($key,$value)=split(/=/,$item,2);
2213: $key = &unescape($key);
2214: next if ($key =~ /^error: 2 /);
2215: $returnhash{$key}=&thaw_unescape($value);
2216: }
2217: my @esc_order = split(/\&/,$orderitems);
2218: foreach my $item (@esc_order) {
2219: push(@order,&unescape($item));
2220: }
2221: } else {
2222: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2223: }
2224: return (\%returnhash,\@order);
2225: }
2226: }
2227:
2228: sub is_domainimage {
2229: my ($url) = @_;
2230: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2231: if (&domain($1) ne '') {
2232: return '1';
2233: }
2234: }
2235: return;
2236: }
2237:
2238: sub inst_directory_query {
2239: my ($srch) = @_;
2240: my $udom = $srch->{'srchdomain'};
2241: my %results;
2242: my $homeserver = &domain($udom,'primary');
2243: my $outcome;
2244: if ($homeserver ne '') {
2245: unless ($homeserver eq $perlvar{'lonHostID'}) {
2246: if ($srch->{'srchby'} eq 'email') {
2247: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2248: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2249: if (($major eq '' && $minor eq '') || ($major < 2) ||
2250: (($major == 2) && ($minor < 12))) {
2251: return;
2252: }
2253: }
2254: }
2255: my $queryid=&reply("querysend:instdirsearch:".
2256: &escape($srch->{'srchby'}).':'.
2257: &escape($srch->{'srchterm'}).':'.
2258: &escape($srch->{'srchtype'}),$homeserver);
2259: my $host=&hostname($homeserver);
2260: if ($queryid !~/^\Q$host\E\_/) {
2261: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2262: return;
2263: }
2264: my $response = &get_query_reply($queryid);
2265: my $maxtries = 5;
2266: my $tries = 1;
2267: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2268: $response = &get_query_reply($queryid);
2269: $tries ++;
2270: }
2271:
2272: if (!&error($response) && $response ne 'refused') {
2273: if ($response eq 'unavailable') {
2274: $outcome = $response;
2275: } else {
2276: $outcome = 'ok';
2277: my @matches = split(/\n/,$response);
2278: foreach my $match (@matches) {
2279: my ($key,$value) = split(/=/,$match);
2280: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2281: }
2282: }
2283: }
2284: }
2285: return ($outcome,%results);
2286: }
2287:
2288: sub usersearch {
2289: my ($srch) = @_;
2290: my $dom = $srch->{'srchdomain'};
2291: my %results;
2292: my %libserv = &all_library();
2293: my $query = 'usersearch';
2294: foreach my $tryserver (keys(%libserv)) {
2295: if (&host_domain($tryserver) eq $dom) {
2296: unless ($tryserver eq $perlvar{'lonHostID'}) {
2297: if ($srch->{'srchby'} eq 'email') {
2298: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2299: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2300: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2301: (($major == 2) && ($minor < 12)));
2302: }
2303: }
2304: my $host=&hostname($tryserver);
2305: my $queryid=
2306: &reply("querysend:".&escape($query).':'.
2307: &escape($srch->{'srchby'}).':'.
2308: &escape($srch->{'srchtype'}).':'.
2309: &escape($srch->{'srchterm'}),$tryserver);
2310: if ($queryid !~/^\Q$host\E\_/) {
2311: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2312: next;
2313: }
2314: my $reply = &get_query_reply($queryid);
2315: my $maxtries = 1;
2316: my $tries = 1;
2317: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2318: $reply = &get_query_reply($queryid);
2319: $tries ++;
2320: }
2321: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2322: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2323: } else {
2324: my @matches;
2325: if ($reply =~ /\n/) {
2326: @matches = split(/\n/,$reply);
2327: } else {
2328: @matches = split(/\&/,$reply);
2329: }
2330: foreach my $match (@matches) {
2331: my ($uname,$udom,%userhash);
2332: foreach my $entry (split(/:/,$match)) {
2333: my ($key,$value) =
2334: map {&unescape($_);} split(/=/,$entry);
2335: $userhash{$key} = $value;
2336: if ($key eq 'username') {
2337: $uname = $value;
2338: } elsif ($key eq 'domain') {
2339: $udom = $value;
2340: }
2341: }
2342: $results{$uname.':'.$udom} = \%userhash;
2343: }
2344: }
2345: }
2346: }
2347: return %results;
2348: }
2349:
2350: sub get_instuser {
2351: my ($udom,$uname,$id) = @_;
2352: my $homeserver = &domain($udom,'primary');
2353: my ($outcome,%results);
2354: if ($homeserver ne '') {
2355: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2356: &escape($id).':'.&escape($udom),$homeserver);
2357: my $host=&hostname($homeserver);
2358: if ($queryid !~/^\Q$host\E\_/) {
2359: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2360: return;
2361: }
2362: my $response = &get_query_reply($queryid);
2363: my $maxtries = 5;
2364: my $tries = 1;
2365: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2366: $response = &get_query_reply($queryid);
2367: $tries ++;
2368: }
2369: if (!&error($response) && $response ne 'refused') {
2370: if ($response eq 'unavailable') {
2371: $outcome = $response;
2372: } else {
2373: $outcome = 'ok';
2374: my @matches = split(/\n/,$response);
2375: foreach my $match (@matches) {
2376: my ($key,$value) = split(/=/,$match);
2377: $results{&unescape($key)} = &thaw_unescape($value);
2378: }
2379: }
2380: }
2381: }
2382: my %userinfo;
2383: if (ref($results{$uname}) eq 'HASH') {
2384: %userinfo = %{$results{$uname}};
2385: }
2386: return ($outcome,%userinfo);
2387: }
2388:
2389: sub get_multiple_instusers {
2390: my ($udom,$users,$caller) = @_;
2391: my ($outcome,$results);
2392: if (ref($users) eq 'HASH') {
2393: my $count = keys(%{$users});
2394: my $requested = &freeze_escape($users);
2395: my $homeserver = &domain($udom,'primary');
2396: if ($homeserver ne '') {
2397: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2398: my $host=&hostname($homeserver);
2399: if ($queryid !~/^\Q$host\E\_/) {
2400: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2401: ' for host: '.$homeserver.'in domain '.$udom);
2402: return ($outcome,$results);
2403: }
2404: my $response = &get_query_reply($queryid);
2405: my $maxtries = 5;
2406: if ($count > 100) {
2407: $maxtries = 1+int($count/20);
2408: }
2409: my $tries = 1;
2410: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2411: $response = &get_query_reply($queryid);
2412: $tries ++;
2413: }
2414: if ($response eq '') {
2415: $results = {};
2416: foreach my $key (keys(%{$users})) {
2417: my ($uname,$id);
2418: if ($caller eq 'id') {
2419: $id = $key;
2420: } else {
2421: $uname = $key;
2422: }
2423: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2424: $outcome = $resp;
2425: if ($resp eq 'ok') {
2426: %{$results} = (%{$results}, %info);
2427: } else {
2428: last;
2429: }
2430: }
2431: } elsif(!&error($response) && ($response ne 'refused')) {
2432: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2433: $outcome = $response;
2434: } else {
2435: ($outcome,my $userdata) = split(/=/,$response,2);
2436: if ($outcome eq 'ok') {
2437: $results = &thaw_unescape($userdata);
2438: }
2439: }
2440: }
2441: }
2442: }
2443: return ($outcome,$results);
2444: }
2445:
2446: sub inst_rulecheck {
2447: my ($udom,$uname,$id,$item,$rules) = @_;
2448: my %returnhash;
2449: if ($udom ne '') {
2450: if (ref($rules) eq 'ARRAY') {
2451: @{$rules} = map {&escape($_);} (@{$rules});
2452: my $rulestr = join(':',@{$rules});
2453: my $homeserver=&domain($udom,'primary');
2454: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2455: my $response;
2456: if ($item eq 'username') {
2457: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2458: ':'.&escape($uname).':'.$rulestr,
2459: $homeserver));
2460: } elsif ($item eq 'id') {
2461: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2462: ':'.&escape($id).':'.$rulestr,
2463: $homeserver));
2464: } elsif ($item eq 'selfcreate') {
2465: $response=&unescape(&reply('instselfcreatecheck:'.
2466: &escape($udom).':'.&escape($uname).
2467: ':'.$rulestr,$homeserver));
2468: }
2469: if ($response ne 'refused') {
2470: my @pairs=split(/\&/,$response);
2471: foreach my $item (@pairs) {
2472: my ($key,$value)=split(/=/,$item,2);
2473: $key = &unescape($key);
2474: next if ($key =~ /^error: 2 /);
2475: $returnhash{$key}=&thaw_unescape($value);
2476: }
2477: }
2478: }
2479: }
2480: }
2481: return %returnhash;
2482: }
2483:
2484: sub inst_userrules {
2485: my ($udom,$check) = @_;
2486: my (%ruleshash,@ruleorder);
2487: if ($udom ne '') {
2488: my $homeserver=&domain($udom,'primary');
2489: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2490: my $response;
2491: if ($check eq 'id') {
2492: $response=&reply('instidrules:'.&escape($udom),
2493: $homeserver);
2494: } elsif ($check eq 'email') {
2495: $response=&reply('instemailrules:'.&escape($udom),
2496: $homeserver);
2497: } else {
2498: $response=&reply('instuserrules:'.&escape($udom),
2499: $homeserver);
2500: }
2501: if (($response ne 'refused') && ($response ne 'error') &&
2502: ($response ne 'unknown_cmd') &&
2503: ($response ne 'no_such_host')) {
2504: my ($hashitems,$orderitems) = split(/:/,$response);
2505: my @pairs=split(/\&/,$hashitems);
2506: foreach my $item (@pairs) {
2507: my ($key,$value)=split(/=/,$item,2);
2508: $key = &unescape($key);
2509: next if ($key =~ /^error: 2 /);
2510: $ruleshash{$key}=&thaw_unescape($value);
2511: }
2512: my @esc_order = split(/\&/,$orderitems);
2513: foreach my $item (@esc_order) {
2514: push(@ruleorder,&unescape($item));
2515: }
2516: }
2517: }
2518: }
2519: return (\%ruleshash,\@ruleorder);
2520: }
2521:
2522: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2523:
2524: sub get_domain_defaults {
2525: my ($domain,$ignore_cache) = @_;
2526: return if (($domain eq '') || ($domain eq 'public'));
2527: my $cachetime = 60*60*24;
2528: unless ($ignore_cache) {
2529: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2530: if (defined($cached)) {
2531: if (ref($result) eq 'HASH') {
2532: return %{$result};
2533: }
2534: }
2535: }
2536: my %domdefaults;
2537: my %domconfig =
2538: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2539: 'requestcourses','inststatus',
2540: 'coursedefaults','usersessions',
2541: 'requestauthor','selfenrollment',
2542: 'coursecategories','ssl','autoenroll',
2543: 'trust','helpsettings'],$domain);
2544: my @coursetypes = ('official','unofficial','community','textbook','placement');
2545: if (ref($domconfig{'defaults'}) eq 'HASH') {
2546: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2547: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2548: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2549: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2550: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2551: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2552: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2553: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2554: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2555: } else {
2556: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2557: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2558: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2559: }
2560: if (ref($domconfig{'quotas'}) eq 'HASH') {
2561: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2562: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2563: } else {
2564: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2565: }
2566: my @usertools = ('aboutme','blog','webdav','portfolio');
2567: foreach my $item (@usertools) {
2568: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2569: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2570: }
2571: }
2572: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2573: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2574: }
2575: }
2576: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2577: foreach my $item ('official','unofficial','community','textbook','placement') {
2578: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2579: }
2580: }
2581: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2582: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2583: }
2584: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2585: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2586: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2587: }
2588: }
2589: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2590: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2591: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2592: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2593: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2594: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2595: }
2596: foreach my $type (@coursetypes) {
2597: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2598: unless ($type eq 'community') {
2599: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2600: }
2601: }
2602: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2603: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2604: }
2605: if ($domdefaults{'postsubmit'} eq 'on') {
2606: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2607: $domdefaults{$type.'postsubtimeout'} =
2608: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2609: }
2610: }
2611: }
2612: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2613: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2614: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2615: if (@clonecodes) {
2616: $domdefaults{'canclone'} = join('+',@clonecodes);
2617: }
2618: }
2619: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2620: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2621: }
2622: if ($domconfig{'coursedefaults'}{'texengine'}) {
2623: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2624: }
2625: }
2626: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2627: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2628: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2629: }
2630: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2631: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2632: }
2633: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2634: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2635: }
2636: }
2637: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2638: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2639: my @settings = ('types','registered','enroll_dates','access_dates','section',
2640: 'approval','limit');
2641: foreach my $type (@coursetypes) {
2642: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2643: my @mgrdc = ();
2644: foreach my $item (@settings) {
2645: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2646: push(@mgrdc,$item);
2647: }
2648: }
2649: if (@mgrdc) {
2650: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2651: }
2652: }
2653: }
2654: }
2655: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2656: foreach my $type (@coursetypes) {
2657: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2658: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2659: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2660: }
2661: }
2662: }
2663: }
2664: }
2665: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2666: $domdefaults{'catauth'} = 'std';
2667: $domdefaults{'catunauth'} = 'std';
2668: if ($domconfig{'coursecategories'}{'auth'}) {
2669: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2670: }
2671: if ($domconfig{'coursecategories'}{'unauth'}) {
2672: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2673: }
2674: }
2675: if (ref($domconfig{'ssl'}) eq 'HASH') {
2676: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2677: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2678: }
2679: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2680: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2681: }
2682: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2683: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2684: }
2685: }
2686: if (ref($domconfig{'trust'}) eq 'HASH') {
2687: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2688: foreach my $prefix (@prefixes) {
2689: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2690: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2691: }
2692: }
2693: }
2694: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2695: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2696: }
2697: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2698: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2699: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2700: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2701: }
2702: }
2703: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2704: return %domdefaults;
2705: }
2706:
2707: sub course_portal_url {
2708: my ($cnum,$cdom) = @_;
2709: my $chome = &homeserver($cnum,$cdom);
2710: my $hostname = &hostname($chome);
2711: my $protocol = $protocol{$chome};
2712: $protocol = 'http' if ($protocol ne 'https');
2713: my %domdefaults = &get_domain_defaults($cdom);
2714: my $firsturl;
2715: if ($domdefaults{'portal_def'}) {
2716: $firsturl = $domdefaults{'portal_def'};
2717: } else {
2718: $firsturl = $protocol.'://'.$hostname;
2719: }
2720: return $firsturl;
2721: }
2722:
2723: # --------------------------------------------------- Assign a key to a student
2724:
2725: sub assign_access_key {
2726: #
2727: # a valid key looks like uname:udom#comments
2728: # comments are being appended
2729: #
2730: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2731: $kdom=
2732: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2733: $knum=
2734: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2735: $cdom=
2736: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2737: $cnum=
2738: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2739: $udom=$env{'user.name'} unless (defined($udom));
2740: $uname=$env{'user.domain'} unless (defined($uname));
2741: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2742: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2743: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2744: # assigned to this person
2745: # - this should not happen,
2746: # unless something went wrong
2747: # the first time around
2748: # ready to assign
2749: $logentry=$1.'; '.$logentry;
2750: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2751: $kdom,$knum) eq 'ok') {
2752: # key now belongs to user
2753: my $envkey='key.'.$cdom.'_'.$cnum;
2754: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2755: &appenv({'environment.'.$envkey => $ckey});
2756: return 'ok';
2757: } else {
2758: return
2759: 'error: Count not permanently assign key, will need to be re-entered later.';
2760: }
2761: } else {
2762: return 'error: Could not assign key, try again later.';
2763: }
2764: } elsif (!$existing{$ckey}) {
2765: # the key does not exist
2766: return 'error: The key does not exist';
2767: } else {
2768: # the key is somebody else's
2769: return 'error: The key is already in use';
2770: }
2771: }
2772:
2773: # ------------------------------------------ put an additional comment on a key
2774:
2775: sub comment_access_key {
2776: #
2777: # a valid key looks like uname:udom#comments
2778: # comments are being appended
2779: #
2780: my ($ckey,$cdom,$cnum,$logentry)=@_;
2781: $cdom=
2782: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2783: $cnum=
2784: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2785: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2786: if ($existing{$ckey}) {
2787: $existing{$ckey}.='; '.$logentry;
2788: # ready to assign
2789: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2790: $cdom,$cnum) eq 'ok') {
2791: return 'ok';
2792: } else {
2793: return 'error: Count not store comment.';
2794: }
2795: } else {
2796: # the key does not exist
2797: return 'error: The key does not exist';
2798: }
2799: }
2800:
2801: # ------------------------------------------------------ Generate a set of keys
2802:
2803: sub generate_access_keys {
2804: my ($number,$cdom,$cnum,$logentry)=@_;
2805: $cdom=
2806: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2807: $cnum=
2808: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2809: unless (&allowed('mky',$cdom)) { return 0; }
2810: unless (($cdom) && ($cnum)) { return 0; }
2811: if ($number>10000) { return 0; }
2812: sleep(2); # make sure don't get same seed twice
2813: srand(time()^($$+($$<<15))); # from "Programming Perl"
2814: my $total=0;
2815: for (my $i=1;$i<=$number;$i++) {
2816: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2817: sprintf("%lx",int(100000*rand)).'-'.
2818: sprintf("%lx",int(100000*rand));
2819: $newkey=~s/1/g/g; # folks mix up 1 and l
2820: $newkey=~s/0/h/g; # and also 0 and O
2821: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2822: if ($existing{$newkey}) {
2823: $i--;
2824: } else {
2825: if (&put('accesskeys',
2826: { $newkey => '# generated '.localtime().
2827: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2828: '; '.$logentry },
2829: $cdom,$cnum) eq 'ok') {
2830: $total++;
2831: }
2832: }
2833: }
2834: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2835: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2836: return $total;
2837: }
2838:
2839: # ------------------------------------------------------- Validate an accesskey
2840:
2841: sub validate_access_key {
2842: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2843: $cdom=
2844: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2845: $cnum=
2846: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2847: $udom=$env{'user.domain'} unless (defined($udom));
2848: $uname=$env{'user.name'} unless (defined($uname));
2849: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2850: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2851: }
2852:
2853: # ------------------------------------- Find the section of student in a course
2854: sub devalidate_getsection_cache {
2855: my ($udom,$unam,$courseid)=@_;
2856: my $hashid="$udom:$unam:$courseid";
2857: &devalidate_cache_new('getsection',$hashid);
2858: }
2859:
2860: sub courseid_to_courseurl {
2861: my ($courseid) = @_;
2862: #already url style courseid
2863: return $courseid if ($courseid =~ m{^/});
2864:
2865: if (exists($env{'course.'.$courseid.'.num'})) {
2866: my $cnum = $env{'course.'.$courseid.'.num'};
2867: my $cdom = $env{'course.'.$courseid.'.domain'};
2868: return "/$cdom/$cnum";
2869: }
2870:
2871: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2872: if (exists($courseinfo{'num'})) {
2873: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2874: }
2875:
2876: return undef;
2877: }
2878:
2879: sub getsection {
2880: my ($udom,$unam,$courseid)=@_;
2881: my $cachetime=1800;
2882:
2883: my $hashid="$udom:$unam:$courseid";
2884: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2885: if (defined($cached)) { return $result; }
2886:
2887: my %Pending;
2888: my %Expired;
2889: #
2890: # Each role can either have not started yet (pending), be active,
2891: # or have expired.
2892: #
2893: # If there is an active role, we are done.
2894: #
2895: # If there is more than one role which has not started yet,
2896: # choose the one which will start sooner
2897: # If there is one role which has not started yet, return it.
2898: #
2899: # If there is more than one expired role, choose the one which ended last.
2900: # If there is a role which has expired, return it.
2901: #
2902: $courseid = &courseid_to_courseurl($courseid);
2903: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2904: foreach my $key (keys(%roleshash)) {
2905: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2906: my $section=$1;
2907: if ($key eq $courseid.'_st') { $section=''; }
2908: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2909: my $now=time;
2910: if (defined($end) && $end && ($now > $end)) {
2911: $Expired{$end}=$section;
2912: next;
2913: }
2914: if (defined($start) && $start && ($now < $start)) {
2915: $Pending{$start}=$section;
2916: next;
2917: }
2918: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2919: }
2920: #
2921: # Presumedly there will be few matching roles from the above
2922: # loop and the sorting time will be negligible.
2923: if (scalar(keys(%Pending))) {
2924: my ($time) = sort {$a <=> $b} keys(%Pending);
2925: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2926: }
2927: if (scalar(keys(%Expired))) {
2928: my @sorted = sort {$a <=> $b} keys(%Expired);
2929: my $time = pop(@sorted);
2930: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2931: }
2932: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2933: }
2934:
2935: sub save_cache {
2936: &purge_remembered();
2937: #&Apache::loncommon::validate_page();
2938: undef(%env);
2939: undef($env_loaded);
2940: }
2941:
2942: my $to_remember=-1;
2943: my %remembered;
2944: my %accessed;
2945: my $kicks=0;
2946: my $hits=0;
2947: sub make_key {
2948: my ($name,$id) = @_;
2949: if (length($id) > 65
2950: && length(&escape($id)) > 200) {
2951: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2952: }
2953: return &escape($name.':'.$id);
2954: }
2955:
2956: sub devalidate_cache_new {
2957: my ($name,$id,$debug) = @_;
2958: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2959: my $remembered_id=$name.':'.$id;
2960: $id=&make_key($name,$id);
2961: $memcache->delete($id);
2962: delete($remembered{$remembered_id});
2963: delete($accessed{$remembered_id});
2964: }
2965:
2966: sub is_cached_new {
2967: my ($name,$id,$debug) = @_;
2968: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2969: if (exists($remembered{$remembered_id})) {
2970: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2971: $accessed{$remembered_id}=[&gettimeofday()];
2972: $hits++;
2973: return ($remembered{$remembered_id},1);
2974: }
2975: $id=&make_key($name,$id);
2976: my $value = $memcache->get($id);
2977: if (!(defined($value))) {
2978: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2979: return (undef,undef);
2980: }
2981: if ($value eq '__undef__') {
2982: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2983: $value=undef;
2984: }
2985: &make_room($remembered_id,$value,$debug);
2986: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2987: return ($value,1);
2988: }
2989:
2990: sub do_cache_new {
2991: my ($name,$id,$value,$time,$debug) = @_;
2992: my $remembered_id=$name.':'.$id;
2993: $id=&make_key($name,$id);
2994: my $setvalue=$value;
2995: if (!defined($setvalue)) {
2996: $setvalue='__undef__';
2997: }
2998: if (!defined($time) ) {
2999: $time=600;
3000: }
3001: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3002: my $result = $memcache->set($id,$setvalue,$time);
3003: if (! $result) {
3004: &logthis("caching of id -> $id failed");
3005: $memcache->disconnect_all();
3006: }
3007: # need to make a copy of $value
3008: &make_room($remembered_id,$value,$debug);
3009: return $value;
3010: }
3011:
3012: sub make_room {
3013: my ($remembered_id,$value,$debug)=@_;
3014:
3015: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3016: : $value;
3017: if ($to_remember<0) { return; }
3018: $accessed{$remembered_id}=[&gettimeofday()];
3019: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3020: my $to_kick;
3021: my $max_time=0;
3022: foreach my $other (keys(%accessed)) {
3023: if (&tv_interval($accessed{$other}) > $max_time) {
3024: $to_kick=$other;
3025: $max_time=&tv_interval($accessed{$other});
3026: }
3027: }
3028: delete($remembered{$to_kick});
3029: delete($accessed{$to_kick});
3030: $kicks++;
3031: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3032: return;
3033: }
3034:
3035: sub purge_remembered {
3036: #&logthis("Tossing ".scalar(keys(%remembered)));
3037: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3038: undef(%remembered);
3039: undef(%accessed);
3040: }
3041: # ------------------------------------- Read an entry from a user's environment
3042:
3043: sub userenvironment {
3044: my ($udom,$unam,@what)=@_;
3045: my $items;
3046: foreach my $item (@what) {
3047: $items.=&escape($item).'&';
3048: }
3049: $items=~s/\&$//;
3050: my %returnhash=();
3051: my $uhome = &homeserver($unam,$udom);
3052: unless ($uhome eq 'no_host') {
3053: my @answer=split(/\&/,
3054: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3055: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3056: return %returnhash;
3057: }
3058: my $i;
3059: for ($i=0;$i<=$#what;$i++) {
3060: $returnhash{$what[$i]}=&unescape($answer[$i]);
3061: }
3062: }
3063: return %returnhash;
3064: }
3065:
3066: # ---------------------------------------------------------- Get a studentphoto
3067: sub studentphoto {
3068: my ($udom,$unam,$ext) = @_;
3069: my $home=&Apache::lonnet::homeserver($unam,$udom);
3070: if (defined($env{'request.course.id'})) {
3071: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3072: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3073: return(&retrievestudentphoto($udom,$unam,$ext));
3074: } else {
3075: my ($result,$perm_reqd)=
3076: &Apache::lonnet::auto_photo_permission($unam,$udom);
3077: if ($result eq 'ok') {
3078: if (!($perm_reqd eq 'yes')) {
3079: return(&retrievestudentphoto($udom,$unam,$ext));
3080: }
3081: }
3082: }
3083: }
3084: } else {
3085: my ($result,$perm_reqd) =
3086: &Apache::lonnet::auto_photo_permission($unam,$udom);
3087: if ($result eq 'ok') {
3088: if (!($perm_reqd eq 'yes')) {
3089: return(&retrievestudentphoto($udom,$unam,$ext));
3090: }
3091: }
3092: }
3093: return '/adm/lonKaputt/lonlogo_broken.gif';
3094: }
3095:
3096: sub retrievestudentphoto {
3097: my ($udom,$unam,$ext,$type) = @_;
3098: my $home=&Apache::lonnet::homeserver($unam,$udom);
3099: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3100: if ($ret eq 'ok') {
3101: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3102: if ($type eq 'thumbnail') {
3103: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3104: }
3105: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3106: return $tokenurl;
3107: } else {
3108: if ($type eq 'thumbnail') {
3109: return '/adm/lonKaputt/genericstudent_tn.gif';
3110: } else {
3111: return '/adm/lonKaputt/lonlogo_broken.gif';
3112: }
3113: }
3114: }
3115:
3116: # -------------------------------------------------------------------- New chat
3117:
3118: sub chatsend {
3119: my ($newentry,$anon,$group)=@_;
3120: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3121: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3122: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3123: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3124: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3125: &escape($newentry)).':'.$group,$chome);
3126: }
3127:
3128: # ------------------------------------------ Find current version of a resource
3129:
3130: sub getversion {
3131: my $fname=&clutter(shift);
3132: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3133: return ¤tversion(&filelocation('',$fname));
3134: }
3135:
3136: sub currentversion {
3137: my $fname=shift;
3138: my $author=$fname;
3139: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3140: my ($udom,$uname)=split(/\//,$author);
3141: my $home=&homeserver($uname,$udom);
3142: if ($home eq 'no_host') {
3143: return -1;
3144: }
3145: my $answer=&reply("currentversion:$fname",$home);
3146: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3147: return -1;
3148: }
3149: return $answer;
3150: }
3151:
3152: #
3153: # Return special version number of resource if set by override, empty otherwise
3154: #
3155: sub usedversion {
3156: my $fname=shift;
3157: unless ($fname) { $fname=$env{'request.uri'}; }
3158: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3159: if ($urlversion) { return $urlversion; }
3160: return '';
3161: }
3162:
3163: # ----------------------------- Subscribe to a resource, return URL if possible
3164:
3165: sub subscribe {
3166: my $fname=shift;
3167: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3168: $fname=~s/[\n\r]//g;
3169: my $author=$fname;
3170: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3171: my ($udom,$uname)=split(/\//,$author);
3172: my $home=homeserver($uname,$udom);
3173: if ($home eq 'no_host') {
3174: return 'not_found';
3175: }
3176: my $answer=reply("sub:$fname",$home);
3177: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3178: $answer.=' by '.$home;
3179: }
3180: return $answer;
3181: }
3182:
3183: # -------------------------------------------------------------- Replicate file
3184:
3185: sub repcopy {
3186: my $filename=shift;
3187: $filename=~s/\/+/\//g;
3188: my $londocroot = $perlvar{'lonDocRoot'};
3189: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3190: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3191: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3192: $filename=~m{^/*(uploaded|editupload)/}) {
3193: return &repcopy_userfile($filename);
3194: }
3195: $filename=~s/[\n\r]//g;
3196: my $transname="$filename.in.transfer";
3197: # FIXME: this should flock
3198: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3199: my $remoteurl=subscribe($filename);
3200: if ($remoteurl =~ /^con_lost by/) {
3201: &logthis("Subscribe returned $remoteurl: $filename");
3202: return 'unavailable';
3203: } elsif ($remoteurl eq 'not_found') {
3204: #&logthis("Subscribe returned not_found: $filename");
3205: return 'not_found';
3206: } elsif ($remoteurl =~ /^rejected by/) {
3207: &logthis("Subscribe returned $remoteurl: $filename");
3208: return 'forbidden';
3209: } elsif ($remoteurl eq 'directory') {
3210: return 'ok';
3211: } else {
3212: my $author=$filename;
3213: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3214: my ($udom,$uname)=split(/\//,$author);
3215: my $home=homeserver($uname,$udom);
3216: unless ($home eq $perlvar{'lonHostID'}) {
3217: my @parts=split(/\//,$filename);
3218: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3219: if ($path ne "$londocroot/res") {
3220: &logthis("Malconfiguration for replication: $filename");
3221: return 'bad_request';
3222: }
3223: my $count;
3224: for ($count=5;$count<$#parts;$count++) {
3225: $path.="/$parts[$count]";
3226: if ((-e $path)!=1) {
3227: mkdir($path,0777);
3228: }
3229: }
3230: my $request=new HTTP::Request('GET',"$remoteurl");
3231: my $response;
3232: if ($remoteurl =~ m{/raw/}) {
3233: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3234: } else {
3235: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3236: }
3237: if ($response->is_error()) {
3238: unlink($transname);
3239: my $message=$response->status_line;
3240: &logthis("<font color=\"blue\">WARNING:"
3241: ." LWP get: $message: $filename</font>");
3242: return 'unavailable';
3243: } else {
3244: if ($remoteurl!~/\.meta$/) {
3245: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3246: my $mresponse;
3247: if ($remoteurl =~ m{/raw/}) {
3248: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3249: } else {
3250: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3251: }
3252: if ($mresponse->is_error()) {
3253: unlink($filename.'.meta');
3254: &logthis(
3255: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3256: }
3257: }
3258: rename($transname,$filename);
3259: return 'ok';
3260: }
3261: }
3262: }
3263: }
3264:
3265: # ------------------------------------------------ Get server side include body
3266: sub ssi_body {
3267: my ($filelink,%form)=@_;
3268: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3269: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3270: }
3271: my $output='';
3272: my $response;
3273: if ($filelink=~/^https?\:/) {
3274: ($output,$response)=&externalssi($filelink);
3275: } else {
3276: $filelink .= $filelink=~/\?/ ? '&' : '?';
3277: $filelink .= 'inhibitmenu=yes';
3278: ($output,$response)=&ssi($filelink,%form);
3279: }
3280: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3281: $output=~s/^.*?\<body[^\>]*\>//si;
3282: $output=~s/\<\/body\s*\>.*?$//si;
3283: if (wantarray) {
3284: return ($output, $response);
3285: } else {
3286: return $output;
3287: }
3288: }
3289:
3290: # --------------------------------------------------------- Server Side Include
3291:
3292: sub absolute_url {
3293: my ($host_name) = @_;
3294: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3295: if ($host_name eq '') {
3296: $host_name = $ENV{'SERVER_NAME'};
3297: }
3298: return $protocol.$host_name;
3299: }
3300:
3301: #
3302: # Server side include.
3303: # Parameters:
3304: # fn Possibly encrypted resource name/id.
3305: # form Hash that describes how the rendering should be done
3306: # and other things.
3307: # Returns:
3308: # Scalar context: The content of the response.
3309: # Array context: 2 element list of the content and the full response object.
3310: #
3311: sub ssi {
3312:
3313: my ($fn,%form)=@_;
3314: my $request;
3315:
3316: $form{'no_update_last_known'}=1;
3317: &Apache::lonenc::check_encrypt(\$fn);
3318: if (%form) {
3319: $request=new HTTP::Request('POST',&absolute_url().$fn);
3320: $request->content(join('&',map {
3321: my $name = escape($_);
3322: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3323: ? join("&$name=", map {escape($_) } @{$form{$_}})
3324: : &escape($form{$_}) );
3325: } keys(%form)));
3326: } else {
3327: $request=new HTTP::Request('GET',&absolute_url().$fn);
3328: }
3329:
3330: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3331: my $lonhost = $perlvar{'lonHostID'};
3332: my $islocal;
3333: if (($env{'request.course.id'}) &&
3334: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3335: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3336: ($form{'grade_symb'} ne '') &&
3337: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3338: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3339: $islocal = 1;
3340: }
3341: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3342: '','','',$islocal);
3343:
3344: if (wantarray) {
3345: return ($response->content, $response);
3346: } else {
3347: return $response->content;
3348: }
3349: }
3350:
3351: sub externalssi {
3352: my ($url)=@_;
3353: my $request=new HTTP::Request('GET',$url);
3354: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3355: if (wantarray) {
3356: return ($response->content, $response);
3357: } else {
3358: return $response->content;
3359: }
3360: }
3361:
3362:
3363: # If the local copy of a replicated resource is outdated, trigger a
3364: # connection from the homeserver to flush the delayed queue. If no update
3365: # happens, remove local copies of outdated resource (and corresponding
3366: # metadata file).
3367:
3368: sub remove_stale_resfile {
3369: my ($url) = @_;
3370: my $removed;
3371: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3372: my $audom = $1;
3373: my $auname = $2;
3374: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3375: my $homeserver = &homeserver($auname,$audom);
3376: unless (($homeserver eq 'no_host') ||
3377: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3378: my $fname = &filelocation('',$url);
3379: if (-e $fname) {
3380: my $hostname = &hostname($homeserver);
3381: if ($hostname) {
3382: my $protocol = $protocol{$homeserver};
3383: $protocol = 'http' if ($protocol ne 'https');
3384: my $uri = &declutter($url);
3385: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3386: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3387: if ($response->is_success()) {
3388: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3389: my $locmodtime = (stat($fname))[9];
3390: if ($locmodtime < $remmodtime) {
3391: my $stale;
3392: my $answer = &reply('pong',$homeserver);
3393: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3394: sleep(0.2);
3395: $locmodtime = (stat($fname))[9];
3396: if ($locmodtime < $remmodtime) {
3397: my $posstransfer = $fname.'.in.transfer';
3398: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3399: $removed = 1;
3400: } else {
3401: $stale = 1;
3402: }
3403: } else {
3404: $removed = 1;
3405: }
3406: } else {
3407: $stale = 1;
3408: }
3409: if ($stale) {
3410: unlink($fname);
3411: if ($uri!~/\.meta$/) {
3412: unlink($fname.'.meta');
3413: }
3414: &reply("unsub:$fname",$homeserver);
3415: $removed = 1;
3416: }
3417: }
3418: }
3419: }
3420: }
3421: }
3422: }
3423: }
3424: return $removed;
3425: }
3426:
3427: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3428:
3429: sub allowuploaded {
3430: my ($srcurl,$url)=@_;
3431: $url=&clutter(&declutter($url));
3432: my $dir=$url;
3433: $dir=~s/\/[^\/]+$//;
3434: my %httpref=();
3435: my $httpurl=&hreflocation('',$url);
3436: $httpref{'httpref.'.$httpurl}=$srcurl;
3437: &Apache::lonnet::appenv(\%httpref);
3438: }
3439:
3440: #
3441: # Determine if the current user should be able to edit a particular resource,
3442: # when viewing in course context.
3443: # (a) When viewing resource used to determine if "Edit" item is included in
3444: # Functions.
3445: # (b) When displaying folder contents in course editor, used to determine if
3446: # "Edit" link will be displayed alongside resource.
3447: #
3448: # input: six args -- filename (decluttered), course number, course domain,
3449: # url, symb (if registered) and group (if this is a group
3450: # item -- e.g., bulletin board, group page etc.).
3451: # output: array of five scalars --
3452: # $cfile -- url for file editing if editable on current server
3453: # $home -- homeserver of resource (i.e., for author if published,
3454: # or course if uploaded.).
3455: # $switchserver -- 1 if server switch will be needed.
3456: # $forceedit -- 1 if icon/link should be to go to edit mode
3457: # $forceview -- 1 if icon/link should be to go to view mode
3458: #
3459:
3460: sub can_edit_resource {
3461: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3462: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3463: #
3464: # For aboutme pages user can only edit his/her own.
3465: #
3466: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3467: my ($sdom,$sname) = ($1,$2);
3468: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3469: $home = $env{'user.home'};
3470: $cfile = $resurl;
3471: if ($env{'form.forceedit'}) {
3472: $forceview = 1;
3473: } else {
3474: $forceedit = 1;
3475: }
3476: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3477: } else {
3478: return;
3479: }
3480: }
3481:
3482: if ($env{'request.course.id'}) {
3483: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3484: if ($group ne '') {
3485: # if this is a group homepage or group bulletin board, check group privs
3486: my $allowed = 0;
3487: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3488: if ((&allowed('mdg',$env{'request.course.id'}.
3489: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3490: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3491: $allowed = 1;
3492: }
3493: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3494: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3495: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3496: $allowed = 1;
3497: }
3498: }
3499: if ($allowed) {
3500: $home=&homeserver($cnum,$cdom);
3501: if ($env{'form.forceedit'}) {
3502: $forceview = 1;
3503: } else {
3504: $forceedit = 1;
3505: }
3506: $cfile = $resurl;
3507: } else {
3508: return;
3509: }
3510: } else {
3511: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3512: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3513: return;
3514: }
3515: } elsif (!$crsedit) {
3516: #
3517: # No edit allowed where CC has switched to student role.
3518: #
3519: return;
3520: }
3521: }
3522: }
3523:
3524: if ($file ne '') {
3525: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3526: if (&is_course_upload($file,$cnum,$cdom)) {
3527: $uploaded = 1;
3528: $incourse = 1;
3529: if ($file =~/\.(htm|html|css|js|txt)$/) {
3530: $cfile = &hreflocation('',$file);
3531: if ($env{'form.forceedit'}) {
3532: $forceview = 1;
3533: } else {
3534: $forceedit = 1;
3535: }
3536: }
3537: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3538: $incourse = 1;
3539: if ($env{'form.forceedit'}) {
3540: $forceview = 1;
3541: } else {
3542: $forceedit = 1;
3543: }
3544: $cfile = $resurl;
3545: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3546: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3547: $incourse = 1;
3548: if ($env{'form.forceedit'}) {
3549: $forceview = 1;
3550: } else {
3551: $forceedit = 1;
3552: }
3553: $cfile = $resurl;
3554: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3555: $incourse = 1;
3556: $cfile = $resurl.'/smpedit';
3557: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3558: $incourse = 1;
3559: if ($env{'form.forceedit'}) {
3560: $forceview = 1;
3561: } else {
3562: $forceedit = 1;
3563: }
3564: $cfile = $resurl;
3565: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3566: $incourse = 1;
3567: if ($env{'form.forceedit'}) {
3568: $forceview = 1;
3569: } else {
3570: $forceedit = 1;
3571: }
3572: $cfile = $resurl;
3573: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3574: $incourse = 1;
3575: if ($env{'form.forceedit'}) {
3576: $forceview = 1;
3577: } else {
3578: $forceedit = 1;
3579: }
3580: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3581: }
3582: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3583: my $template = '/res/lib/templates/simpleproblem.problem';
3584: if (&is_on_map($template)) {
3585: $incourse = 1;
3586: $forceview = 1;
3587: $cfile = $template;
3588: }
3589: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3590: $incourse = 1;
3591: if ($env{'form.forceedit'}) {
3592: $forceview = 1;
3593: } else {
3594: $forceedit = 1;
3595: }
3596: $cfile = $resurl;
3597: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3598: $incourse = 1;
3599: if ($env{'form.forceedit'}) {
3600: $forceview = 1;
3601: } else {
3602: $forceedit = 1;
3603: }
3604: $cfile = $resurl;
3605: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3606: $incourse = 1;
3607: $forceview = 1;
3608: if ($symb) {
3609: my ($map,$id,$res)=&decode_symb($symb);
3610: $env{'request.symb'} = $symb;
3611: $cfile = &clutter($res);
3612: } else {
3613: $cfile = $env{'form.suppurl'};
3614: my $escfile = &unescape($cfile);
3615: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3616: $cfile = '/adm/wrapper'.$escfile;
3617: } else {
3618: $escfile =~ s{^http://}{};
3619: $cfile = &escape("/adm/wrapper/ext/$escfile");
3620: }
3621: }
3622: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3623: if ($env{'form.forceedit'}) {
3624: $forceview = 1;
3625: } else {
3626: $forceedit = 1;
3627: }
3628: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3629: }
3630: }
3631: if ($uploaded || $incourse) {
3632: $home=&homeserver($cnum,$cdom);
3633: } elsif ($file !~ m{/$}) {
3634: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3635: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3636: # Check that the user has permission to edit this resource
3637: my $setpriv = 1;
3638: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3639: if (defined($cfudom)) {
3640: $home=&homeserver($cfuname,$cfudom);
3641: $cfile=$file;
3642: }
3643: }
3644: if (($cfile ne '') && (!$incourse || $uploaded) &&
3645: (($home ne '') && ($home ne 'no_host'))) {
3646: my @ids=¤t_machine_ids();
3647: unless (grep(/^\Q$home\E$/,@ids)) {
3648: $switchserver=1;
3649: }
3650: }
3651: }
3652: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3653: }
3654:
3655: sub is_course_upload {
3656: my ($file,$cnum,$cdom) = @_;
3657: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3658: $uploadpath =~ s{^\/}{};
3659: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3660: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3661: return 1;
3662: }
3663: return;
3664: }
3665:
3666: sub in_course {
3667: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3668: if ($hideprivileged) {
3669: my $skipuser;
3670: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3671: my @possdoms = ($cdom);
3672: if ($coursehash{'checkforpriv'}) {
3673: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3674: }
3675: if (&privileged($uname,$udom,\@possdoms)) {
3676: $skipuser = 1;
3677: if ($coursehash{'nothideprivileged'}) {
3678: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3679: my $user;
3680: if ($item =~ /:/) {
3681: $user = $item;
3682: } else {
3683: $user = join(':',split(/[\@]/,$item));
3684: }
3685: if ($user eq $uname.':'.$udom) {
3686: undef($skipuser);
3687: last;
3688: }
3689: }
3690: }
3691: if ($skipuser) {
3692: return 0;
3693: }
3694: }
3695: }
3696: $type ||= 'any';
3697: if (!defined($cdom) || !defined($cnum)) {
3698: my $cid = $env{'request.course.id'};
3699: $cdom = $env{'course.'.$cid.'.domain'};
3700: $cnum = $env{'course.'.$cid.'.num'};
3701: }
3702: my $typesref;
3703: if (($type eq 'any') || ($type eq 'all')) {
3704: $typesref = ['active','previous','future'];
3705: } elsif ($type eq 'previous' || $type eq 'future') {
3706: $typesref = [$type];
3707: }
3708: my %roles = &get_my_roles($uname,$udom,'userroles',
3709: $typesref,undef,[$cdom]);
3710: my ($tmp) = keys(%roles);
3711: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3712: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3713: if (@course_roles > 0) {
3714: return 1;
3715: }
3716: return 0;
3717: }
3718:
3719: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3720: # input: action, courseID, current domain, intended
3721: # path to file, source of file, instruction to parse file for objects,
3722: # ref to hash for embedded objects,
3723: # ref to hash for codebase of java objects.
3724: # reference to scalar to accommodate mime type determined
3725: # from File::MMagic if $parser = parse.
3726: #
3727: # output: url to file (if action was uploaddoc),
3728: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3729: #
3730: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3731: # course.
3732: #
3733: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3734: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3735: # course's home server.
3736: #
3737: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3738: # be copied from $source (current location) to
3739: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3740: # and will then be copied to
3741: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3742: # course's home server.
3743: #
3744: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3745: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3746: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3747: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3748: # in course's home server.
3749: #
3750:
3751: sub process_coursefile {
3752: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3753: $mimetype)=@_;
3754: my $fetchresult;
3755: my $home=&homeserver($docuname,$docudom);
3756: if ($action eq 'propagate') {
3757: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3758: $home);
3759: } else {
3760: my $fpath = '';
3761: my $fname = $file;
3762: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3763: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3764: my $filepath = &build_filepath($fpath);
3765: if ($action eq 'copy') {
3766: if ($source eq '') {
3767: $fetchresult = 'no source file';
3768: return $fetchresult;
3769: } else {
3770: my $destination = $filepath.'/'.$fname;
3771: rename($source,$destination);
3772: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3773: $home);
3774: }
3775: } elsif ($action eq 'uploaddoc') {
3776: open(my $fh,'>',$filepath.'/'.$fname);
3777: print $fh $env{'form.'.$source};
3778: close($fh);
3779: if ($parser eq 'parse') {
3780: my $mm = new File::MMagic;
3781: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3782: if ($type eq 'text/html') {
3783: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3784: unless ($parse_result eq 'ok') {
3785: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3786: }
3787: }
3788: if (ref($mimetype)) {
3789: $$mimetype = $type;
3790: }
3791: }
3792: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3793: $home);
3794: if ($fetchresult eq 'ok') {
3795: return '/uploaded/'.$fpath.'/'.$fname;
3796: } else {
3797: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3798: ' to host '.$home.': '.$fetchresult);
3799: return '/adm/notfound.html';
3800: }
3801: }
3802: }
3803: unless ( $fetchresult eq 'ok') {
3804: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3805: ' to host '.$home.': '.$fetchresult);
3806: }
3807: return $fetchresult;
3808: }
3809:
3810: sub build_filepath {
3811: my ($fpath) = @_;
3812: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3813: unless ($fpath eq '') {
3814: my @parts=split('/',$fpath);
3815: foreach my $part (@parts) {
3816: $filepath.= '/'.$part;
3817: if ((-e $filepath)!=1) {
3818: mkdir($filepath,0777);
3819: }
3820: }
3821: }
3822: return $filepath;
3823: }
3824:
3825: sub store_edited_file {
3826: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3827: my $file = $primary_url;
3828: $file =~ s#^/uploaded/$docudom/$docuname/##;
3829: my $fpath = '';
3830: my $fname = $file;
3831: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3832: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3833: my $filepath = &build_filepath($fpath);
3834: open(my $fh,'>',$filepath.'/'.$fname);
3835: print $fh $content;
3836: close($fh);
3837: my $home=&homeserver($docuname,$docudom);
3838: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3839: $home);
3840: if ($$fetchresult eq 'ok') {
3841: return '/uploaded/'.$fpath.'/'.$fname;
3842: } else {
3843: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3844: ' to host '.$home.': '.$$fetchresult);
3845: return '/adm/notfound.html';
3846: }
3847: }
3848:
3849: sub clean_filename {
3850: my ($fname,$args)=@_;
3851: # Replace Windows backslashes by forward slashes
3852: $fname=~s/\\/\//g;
3853: if (!$args->{'keep_path'}) {
3854: # Get rid of everything but the actual filename
3855: $fname=~s/^.*\/([^\/]+)$/$1/;
3856: }
3857: # Replace spaces by underscores
3858: $fname=~s/\s+/\_/g;
3859: # Replace all other weird characters by nothing
3860: $fname=~s{[^/\w\.\-]}{}g;
3861: # Replace all .\d. sequences with _\d. so they no longer look like version
3862: # numbers
3863: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3864: return $fname;
3865: }
3866: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3867: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3868: # image with the same aspect ratio as the original, but with dimensions which do
3869: # not exceed $resizewidth and $resizeheight.
3870:
3871: sub resizeImage {
3872: my ($img_path,$resizewidth,$resizeheight) = @_;
3873: my $ima = Image::Magick->new;
3874: my $resized;
3875: if (-e $img_path) {
3876: $ima->Read($img_path);
3877: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3878: my $width = $ima->Get('width');
3879: my $height = $ima->Get('height');
3880: if ($width > $resizewidth) {
3881: my $factor = $width/$resizewidth;
3882: my $newheight = $height/$factor;
3883: $ima->Scale(width=>$resizewidth,height=>$newheight);
3884: $resized = 1;
3885: }
3886: }
3887: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3888: my $width = $ima->Get('width');
3889: my $height = $ima->Get('height');
3890: if ($height > $resizeheight) {
3891: my $factor = $height/$resizeheight;
3892: my $newwidth = $width/$factor;
3893: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3894: $resized = 1;
3895: }
3896: }
3897: if ($resized) {
3898: $ima->Write($img_path);
3899: }
3900: }
3901: return;
3902: }
3903:
3904: # --------------- Take an uploaded file and put it into the userfiles directory
3905: # input: $formname - the contents of the file are in $env{"form.$formname"}
3906: # the desired filename is in $env{"form.$formname.filename"}
3907: # $context - possible values: coursedoc, existingfile, overwrite,
3908: # canceloverwrite, or ''.
3909: # if 'coursedoc': upload to the current course
3910: # if 'existingfile': write file to tmp/overwrites directory
3911: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3912: # $context is passed as argument to &finishuserfileupload
3913: # $subdir - directory in userfile to store the file into
3914: # $parser - instruction to parse file for objects ($parser = parse)
3915: # $allfiles - reference to hash for embedded objects
3916: # $codebase - reference to hash for codebase of java objects
3917: # $desuname - username for permanent storage of uploaded file
3918: # $dsetudom - domain for permanaent storage of uploaded file
3919: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3920: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3921: # $resizewidth - width (pixels) to which to resize uploaded image
3922: # $resizeheight - height (pixels) to which to resize uploaded image
3923: # $mimetype - reference to scalar to accommodate mime type determined
3924: # from File::MMagic.
3925: #
3926: # output: url of file in userspace, or error: <message>
3927: # or /adm/notfound.html if failure to upload occurse
3928:
3929: sub userfileupload {
3930: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3931: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3932: if (!defined($subdir)) { $subdir='unknown'; }
3933: my $fname=$env{'form.'.$formname.'.filename'};
3934: $fname=&clean_filename($fname);
3935: # See if there is anything left
3936: unless ($fname) { return 'error: no uploaded file'; }
3937: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3938: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3939: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3940: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3941: my $now = time;
3942: my $filepath;
3943: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3944: $filepath = 'tmp/helprequests/'.$now;
3945: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3946: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3947: '_'.$env{'user.domain'}.'/pending';
3948: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3949: my ($docuname,$docudom);
3950: if ($destudom =~ /^$match_domain$/) {
3951: $docudom = $destudom;
3952: } else {
3953: $docudom = $env{'user.domain'};
3954: }
3955: if ($destuname =~ /^$match_username$/) {
3956: $docuname = $destuname;
3957: } else {
3958: $docuname = $env{'user.name'};
3959: }
3960: if (exists($env{'form.group'})) {
3961: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3962: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3963: }
3964: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3965: if ($context eq 'canceloverwrite') {
3966: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3967: if (-e $tempfile) {
3968: my @info = stat($tempfile);
3969: if ($info[9] eq $env{'form.timestamp'}) {
3970: unlink($tempfile);
3971: }
3972: }
3973: return;
3974: }
3975: }
3976: # Create the directory if not present
3977: my @parts=split(/\//,$filepath);
3978: my $fullpath = $perlvar{'lonDaemons'};
3979: for (my $i=0;$i<@parts;$i++) {
3980: $fullpath .= '/'.$parts[$i];
3981: if ((-e $fullpath)!=1) {
3982: mkdir($fullpath,0777);
3983: }
3984: }
3985: open(my $fh,'>',$fullpath.'/'.$fname);
3986: print $fh $env{'form.'.$formname};
3987: close($fh);
3988: if ($context eq 'existingfile') {
3989: my @info = stat($fullpath.'/'.$fname);
3990: return ($fullpath.'/'.$fname,$info[9]);
3991: } else {
3992: return $fullpath.'/'.$fname;
3993: }
3994: }
3995: if ($subdir eq 'scantron') {
3996: $fname = 'scantron_orig_'.$fname;
3997: } else {
3998: $fname="$subdir/$fname";
3999: }
4000: if ($context eq 'coursedoc') {
4001: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4002: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4003: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4004: return &finishuserfileupload($docuname,$docudom,
4005: $formname,$fname,$parser,$allfiles,
4006: $codebase,$thumbwidth,$thumbheight,
4007: $resizewidth,$resizeheight,$context,$mimetype);
4008: } else {
4009: if ($env{'form.folder'}) {
4010: $fname=$env{'form.folder'}.'/'.$fname;
4011: }
4012: return &process_coursefile('uploaddoc',$docuname,$docudom,
4013: $fname,$formname,$parser,
4014: $allfiles,$codebase,$mimetype);
4015: }
4016: } elsif (defined($destuname)) {
4017: my $docuname=$destuname;
4018: my $docudom=$destudom;
4019: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4020: $parser,$allfiles,$codebase,
4021: $thumbwidth,$thumbheight,
4022: $resizewidth,$resizeheight,$context,$mimetype);
4023: } else {
4024: my $docuname=$env{'user.name'};
4025: my $docudom=$env{'user.domain'};
4026: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4027: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4028: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4029: }
4030: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4031: $parser,$allfiles,$codebase,
4032: $thumbwidth,$thumbheight,
4033: $resizewidth,$resizeheight,$context,$mimetype);
4034: }
4035: }
4036:
4037: sub finishuserfileupload {
4038: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4039: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4040: my $path=$docudom.'/'.$docuname.'/';
4041: my $filepath=$perlvar{'lonDocRoot'};
4042:
4043: my ($fnamepath,$file,$fetchthumb);
4044: $file=$fname;
4045: if ($fname=~m|/|) {
4046: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4047: $path.=$fnamepath.'/';
4048: }
4049: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4050: my $count;
4051: for ($count=4;$count<=$#parts;$count++) {
4052: $filepath.="/$parts[$count]";
4053: if ((-e $filepath)!=1) {
4054: mkdir($filepath,0777);
4055: }
4056: }
4057:
4058: # Save the file
4059: {
4060: if (!open(FH,'>',$filepath.'/'.$file)) {
4061: &logthis('Failed to create '.$filepath.'/'.$file);
4062: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4063: return '/adm/notfound.html';
4064: }
4065: if ($context eq 'overwrite') {
4066: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4067: my $target = $filepath.'/'.$file;
4068: if (-e $source) {
4069: my @info = stat($source);
4070: if ($info[9] eq $env{'form.timestamp'}) {
4071: unless (&File::Copy::move($source,$target)) {
4072: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4073: return "Moving from $source failed";
4074: }
4075: } else {
4076: return "Temporary file: $source had unexpected date/time for last modification";
4077: }
4078: } else {
4079: return "Temporary file: $source missing";
4080: }
4081: } elsif (!print FH ($env{'form.'.$formname})) {
4082: &logthis('Failed to write to '.$filepath.'/'.$file);
4083: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4084: return '/adm/notfound.html';
4085: }
4086: close(FH);
4087: if ($resizewidth && $resizeheight) {
4088: my $mm = new File::MMagic;
4089: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4090: if ($mime_type =~ m{^image/}) {
4091: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4092: }
4093: }
4094: }
4095: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4096: if (ref($mimetype)) {
4097: if ($$mimetype eq '') {
4098: my $mm = new File::MMagic;
4099: my $type = $mm->checktype_filename($filepath.'/'.$file);
4100: $$mimetype = $type;
4101: }
4102: }
4103: }
4104: if ($parser eq 'parse') {
4105: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4106: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4107: $allfiles,$codebase);
4108: unless ($parse_result eq 'ok') {
4109: &logthis('Failed to parse '.$filepath.$file.
4110: ' for embedded media: '.$parse_result);
4111: }
4112: }
4113: }
4114: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4115: my $input = $filepath.'/'.$file;
4116: my $output = $filepath.'/'.'tn-'.$file;
4117: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4118: my @args = ('convert','-sample',$thumbsize,$input,$output);
4119: system({$args[0]} @args);
4120: if (-e $filepath.'/'.'tn-'.$file) {
4121: $fetchthumb = 1;
4122: }
4123: }
4124:
4125: # Notify homeserver to grep it
4126: #
4127: my $docuhome=&homeserver($docuname,$docudom);
4128: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4129: if ($fetchresult eq 'ok') {
4130: if ($fetchthumb) {
4131: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4132: if ($thumbresult ne 'ok') {
4133: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4134: $docuhome.': '.$thumbresult);
4135: }
4136: }
4137: #
4138: # Return the URL to it
4139: return '/uploaded/'.$path.$file;
4140: } else {
4141: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4142: ': '.$fetchresult);
4143: return '/adm/notfound.html';
4144: }
4145: }
4146:
4147: sub extract_embedded_items {
4148: my ($fullpath,$allfiles,$codebase,$content) = @_;
4149: my @state = ();
4150: my (%lastids,%related,%shockwave,%flashvars);
4151: my %javafiles = (
4152: codebase => '',
4153: code => '',
4154: archive => ''
4155: );
4156: my %mediafiles = (
4157: src => '',
4158: movie => '',
4159: );
4160: my $p;
4161: if ($content) {
4162: $p = HTML::LCParser->new($content);
4163: } else {
4164: $p = HTML::LCParser->new($fullpath);
4165: }
4166: while (my $t=$p->get_token()) {
4167: if ($t->[0] eq 'S') {
4168: my ($tagname, $attr) = ($t->[1],$t->[2]);
4169: push(@state, $tagname);
4170: if (lc($tagname) eq 'allow') {
4171: &add_filetype($allfiles,$attr->{'src'},'src');
4172: }
4173: if (lc($tagname) eq 'img') {
4174: &add_filetype($allfiles,$attr->{'src'},'src');
4175: }
4176: if (lc($tagname) eq 'a') {
4177: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4178: &add_filetype($allfiles,$attr->{'href'},'href');
4179: }
4180: }
4181: if (lc($tagname) eq 'script') {
4182: my $src;
4183: if ($attr->{'archive'} =~ /\.jar$/i) {
4184: &add_filetype($allfiles,$attr->{'archive'},'archive');
4185: } else {
4186: if ($attr->{'src'} ne '') {
4187: $src = $attr->{'src'};
4188: &add_filetype($allfiles,$src,'src');
4189: }
4190: }
4191: my $text = $p->get_trimmed_text();
4192: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4193: my @swfargs = split(/,/,$1);
4194: foreach my $item (@swfargs) {
4195: $item =~ s/["']//g;
4196: $item =~ s/^\s+//;
4197: $item =~ s/\s+$//;
4198: }
4199: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4200: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4201: push(@{$related{$swfargs[0]}},$swfargs[2]);
4202: } else {
4203: $related{$swfargs[0]} = [$swfargs[2]];
4204: }
4205: }
4206: }
4207: }
4208: if (lc($tagname) eq 'link') {
4209: if (lc($attr->{'rel'}) eq 'stylesheet') {
4210: &add_filetype($allfiles,$attr->{'href'},'href');
4211: }
4212: }
4213: if (lc($tagname) eq 'object' ||
4214: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4215: foreach my $item (keys(%javafiles)) {
4216: $javafiles{$item} = '';
4217: }
4218: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4219: $lastids{lc($tagname)} = $attr->{'id'};
4220: }
4221: }
4222: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4223: my $name = lc($attr->{'name'});
4224: foreach my $item (keys(%javafiles)) {
4225: if ($name eq $item) {
4226: $javafiles{$item} = $attr->{'value'};
4227: last;
4228: }
4229: }
4230: my $pathfrom;
4231: foreach my $item (keys(%mediafiles)) {
4232: if ($name eq $item) {
4233: $pathfrom = $attr->{'value'};
4234: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4235: &add_filetype($allfiles,$pathfrom,$name);
4236: last;
4237: }
4238: }
4239: if ($name eq 'flashvars') {
4240: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4241: }
4242: if ($pathfrom ne '') {
4243: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4244: $pathfrom);
4245: }
4246: }
4247: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4248: foreach my $item (keys(%javafiles)) {
4249: if ($attr->{$item}) {
4250: $javafiles{$item} = $attr->{$item};
4251: last;
4252: }
4253: }
4254: foreach my $item (keys(%mediafiles)) {
4255: if ($attr->{$item}) {
4256: &add_filetype($allfiles,$attr->{$item},$item);
4257: last;
4258: }
4259: }
4260: if (lc($tagname) eq 'embed') {
4261: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4262: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4263: $attr->{'src'});
4264: }
4265: }
4266: }
4267: if (lc($tagname) eq 'iframe') {
4268: my $src = $attr->{'src'} ;
4269: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4270: &add_filetype($allfiles,$src,'src');
4271: } elsif ($src =~ m{^/}) {
4272: if ($env{'request.course.id'}) {
4273: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4274: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4275: my $url = &hreflocation('',$fullpath);
4276: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4277: my $relpath = $1;
4278: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4279: &add_filetype($allfiles,$1,'src');
4280: }
4281: }
4282: }
4283: }
4284: }
4285: if ($t->[4] =~ m{/>$}) {
4286: pop(@state);
4287: }
4288: } elsif ($t->[0] eq 'E') {
4289: my ($tagname) = ($t->[1]);
4290: if ($javafiles{'codebase'} ne '') {
4291: $javafiles{'codebase'} .= '/';
4292: }
4293: if (lc($tagname) eq 'applet' ||
4294: lc($tagname) eq 'object' ||
4295: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4296: ) {
4297: foreach my $item (keys(%javafiles)) {
4298: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4299: my $file=$javafiles{'codebase'}.$javafiles{$item};
4300: &add_filetype($allfiles,$file,$item);
4301: }
4302: }
4303: }
4304: pop @state;
4305: }
4306: }
4307: foreach my $id (sort(keys(%flashvars))) {
4308: if ($shockwave{$id} ne '') {
4309: my @pairs = split(/\&/,$flashvars{$id});
4310: foreach my $pair (@pairs) {
4311: my ($key,$value) = split(/\=/,$pair);
4312: if ($key eq 'thumb') {
4313: &add_filetype($allfiles,$value,$key);
4314: } elsif ($key eq 'content') {
4315: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4316: my ($ext) = ($value =~ /\.([^.]+)$/);
4317: if ($ext ne '') {
4318: &add_filetype($allfiles,$path.$value,$ext);
4319: }
4320: }
4321: }
4322: }
4323: }
4324: return 'ok';
4325: }
4326:
4327: sub add_filetype {
4328: my ($allfiles,$file,$type)=@_;
4329: if (exists($allfiles->{$file})) {
4330: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4331: push(@{$allfiles->{$file}}, &escape($type));
4332: }
4333: } else {
4334: @{$allfiles->{$file}} = (&escape($type));
4335: }
4336: }
4337:
4338: sub embedded_dependency {
4339: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4340: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4341: if (($identifier ne '') &&
4342: (ref($related->{$identifier}) eq 'ARRAY') &&
4343: ($pathfrom ne '')) {
4344: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4345: foreach my $dep (@{$related->{$identifier}}) {
4346: &add_filetype($allfiles,$path.$dep,'object');
4347: }
4348: }
4349: }
4350: return;
4351: }
4352:
4353: sub removeuploadedurl {
4354: my ($url)=@_;
4355: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4356: return &removeuserfile($uname,$udom,$fname);
4357: }
4358:
4359: sub removeuserfile {
4360: my ($docuname,$docudom,$fname)=@_;
4361: my $home=&homeserver($docuname,$docudom);
4362: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4363: if ($result eq 'ok') {
4364: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4365: my $metafile = $fname.'.meta';
4366: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4367: my $url = "/uploaded/$docudom/$docuname/$fname";
4368: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4369: my $sqlresult =
4370: &update_portfolio_table($docuname,$docudom,$file,
4371: 'portfolio_metadata',$group,
4372: 'delete');
4373: }
4374: }
4375: return $result;
4376: }
4377:
4378: sub mkdiruserfile {
4379: my ($docuname,$docudom,$dir)=@_;
4380: my $home=&homeserver($docuname,$docudom);
4381: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4382: }
4383:
4384: sub renameuserfile {
4385: my ($docuname,$docudom,$old,$new)=@_;
4386: my $home=&homeserver($docuname,$docudom);
4387: my $result = &reply("renameuserfile:$docudom:$docuname:".
4388: &escape("$old").':'.&escape("$new"),$home);
4389: if ($result eq 'ok') {
4390: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4391: my $oldmeta = $old.'.meta';
4392: my $newmeta = $new.'.meta';
4393: my $metaresult =
4394: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4395: my $url = "/uploaded/$docudom/$docuname/$old";
4396: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4397: my $sqlresult =
4398: &update_portfolio_table($docuname,$docudom,$file,
4399: 'portfolio_metadata',$group,
4400: 'delete');
4401: }
4402: }
4403: return $result;
4404: }
4405:
4406: # ------------------------------------------------------------------------- Log
4407:
4408: sub log {
4409: my ($dom,$nam,$hom,$what)=@_;
4410: return critical("log:$dom:$nam:$what",$hom);
4411: }
4412:
4413: # ------------------------------------------------------------------ Course Log
4414: #
4415: # This routine flushes several buffers of non-mission-critical nature
4416: #
4417:
4418: sub flushcourselogs {
4419: &logthis('Flushing log buffers');
4420: #
4421: # course logs
4422: # This is a log of all transactions in a course, which can be used
4423: # for data mining purposes
4424: #
4425: # It also collects the courseid database, which lists last transaction
4426: # times and course titles for all courseids
4427: #
4428: my %courseidbuffer=();
4429: foreach my $crsid (keys(%courselogs)) {
4430: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4431: &escape($courselogs{$crsid}),
4432: $coursehombuf{$crsid}) eq 'ok') {
4433: delete $courselogs{$crsid};
4434: } else {
4435: &logthis('Failed to flush log buffer for '.$crsid);
4436: if (length($courselogs{$crsid})>40000) {
4437: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4438: " exceeded maximum size, deleting.</font>");
4439: delete $courselogs{$crsid};
4440: }
4441: }
4442: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4443: 'description' => $coursedescrbuf{$crsid},
4444: 'inst_code' => $courseinstcodebuf{$crsid},
4445: 'type' => $coursetypebuf{$crsid},
4446: 'owner' => $courseownerbuf{$crsid},
4447: };
4448: }
4449: #
4450: # Write course id database (reverse lookup) to homeserver of courses
4451: # Is used in pickcourse
4452: #
4453: foreach my $crs_home (keys(%courseidbuffer)) {
4454: my $response = &courseidput(&host_domain($crs_home),
4455: $courseidbuffer{$crs_home},
4456: $crs_home,'timeonly');
4457: }
4458: #
4459: # File accesses
4460: # Writes to the dynamic metadata of resources to get hit counts, etc.
4461: #
4462: foreach my $entry (keys(%accesshash)) {
4463: if ($entry =~ /___count$/) {
4464: my ($dom,$name);
4465: ($dom,$name,undef)=
4466: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4467: if (! defined($dom) || $dom eq '' ||
4468: ! defined($name) || $name eq '') {
4469: my $cid = $env{'request.course.id'};
4470: $dom = $env{'request.'.$cid.'.domain'};
4471: $name = $env{'request.'.$cid.'.num'};
4472: }
4473: my $value = $accesshash{$entry};
4474: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4475: my %temphash=($url => $value);
4476: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4477: if ($result eq 'ok') {
4478: delete $accesshash{$entry};
4479: }
4480: } else {
4481: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4482: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4483: my %temphash=($entry => $accesshash{$entry});
4484: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4485: delete $accesshash{$entry};
4486: }
4487: }
4488: }
4489: #
4490: # Roles
4491: # Reverse lookup of user roles for course faculty/staff and co-authorship
4492: #
4493: foreach my $entry (keys(%userrolehash)) {
4494: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4495: split(/\:/,$entry);
4496: if (&Apache::lonnet::put('nohist_userroles',
4497: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4498: $rudom,$runame) eq 'ok') {
4499: delete $userrolehash{$entry};
4500: }
4501: }
4502: #
4503: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4504: #
4505: my %domrolebuffer = ();
4506: foreach my $entry (keys(%domainrolehash)) {
4507: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4508: if ($domrolebuffer{$rudom}) {
4509: $domrolebuffer{$rudom}.='&'.&escape($entry).
4510: '='.&escape($domainrolehash{$entry});
4511: } else {
4512: $domrolebuffer{$rudom}.=&escape($entry).
4513: '='.&escape($domainrolehash{$entry});
4514: }
4515: delete $domainrolehash{$entry};
4516: }
4517: foreach my $dom (keys(%domrolebuffer)) {
4518: my %servers;
4519: if (defined(&domain($dom,'primary'))) {
4520: my $primary=&domain($dom,'primary');
4521: my $hostname=&hostname($primary);
4522: $servers{$primary} = $hostname;
4523: } else {
4524: %servers = &get_servers($dom,'library');
4525: }
4526: foreach my $tryserver (keys(%servers)) {
4527: if (&reply('domroleput:'.$dom.':'.
4528: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4529: last;
4530: } else {
4531: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4532: }
4533: }
4534: }
4535: $dumpcount++;
4536: }
4537:
4538: sub courselog {
4539: my $what=shift;
4540: $what=time.':'.$what;
4541: unless ($env{'request.course.id'}) { return ''; }
4542: $coursedombuf{$env{'request.course.id'}}=
4543: $env{'course.'.$env{'request.course.id'}.'.domain'};
4544: $coursenumbuf{$env{'request.course.id'}}=
4545: $env{'course.'.$env{'request.course.id'}.'.num'};
4546: $coursehombuf{$env{'request.course.id'}}=
4547: $env{'course.'.$env{'request.course.id'}.'.home'};
4548: $coursedescrbuf{$env{'request.course.id'}}=
4549: $env{'course.'.$env{'request.course.id'}.'.description'};
4550: $courseinstcodebuf{$env{'request.course.id'}}=
4551: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4552: $courseownerbuf{$env{'request.course.id'}}=
4553: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4554: $coursetypebuf{$env{'request.course.id'}}=
4555: $env{'course.'.$env{'request.course.id'}.'.type'};
4556: if (defined $courselogs{$env{'request.course.id'}}) {
4557: $courselogs{$env{'request.course.id'}}.='&'.$what;
4558: } else {
4559: $courselogs{$env{'request.course.id'}}.=$what;
4560: }
4561: if (length($courselogs{$env{'request.course.id'}})>4048) {
4562: &flushcourselogs();
4563: }
4564: }
4565:
4566: sub courseacclog {
4567: my $fnsymb=shift;
4568: unless ($env{'request.course.id'}) { return ''; }
4569: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4570: if ($fnsymb=~/$LONCAPA::assess_re/) {
4571: $what.=':POST';
4572: # FIXME: Probably ought to escape things....
4573: foreach my $key (keys(%env)) {
4574: if ($key=~/^form\.(.*)/) {
4575: my $formitem = $1;
4576: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4577: $what.=':'.$formitem.'='.$env{$key};
4578: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4579: $what.=':'.$formitem.'='.$env{$key};
4580: }
4581: }
4582: }
4583: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4584: # FIXME: We should not be depending on a form parameter that someone
4585: # editing lonsearchcat.pm might change in the future.
4586: if ($env{'form.phase'} eq 'course_search') {
4587: $what.= ':POST';
4588: # FIXME: Probably ought to escape things....
4589: foreach my $element ('courseexp','crsfulltext','crsrelated',
4590: 'crsdiscuss') {
4591: $what.=':'.$element.'='.$env{'form.'.$element};
4592: }
4593: }
4594: }
4595: &courselog($what);
4596: }
4597:
4598: sub countacc {
4599: my $url=&declutter(shift);
4600: return if (! defined($url) || $url eq '');
4601: unless ($env{'request.course.id'}) { return ''; }
4602: #
4603: # Mark that this url was used in this course
4604: #
4605: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4606: #
4607: # Increase the access count for this resource in this child process
4608: #
4609: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4610: $accesshash{$key}++;
4611: }
4612:
4613: sub linklog {
4614: my ($from,$to)=@_;
4615: $from=&declutter($from);
4616: $to=&declutter($to);
4617: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4618: $accesshash{$to.'___'.$from.'___goto'}=1;
4619: }
4620:
4621: sub statslog {
4622: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4623: if ($users<2) { return; }
4624: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4625: 'course' => $env{'request.course.id'},
4626: 'sections' => '"all"',
4627: 'num_students' => $users,
4628: 'part' => $part,
4629: 'symb' => $symb,
4630: 'mean_tries' => $av_attempts,
4631: 'deg_of_diff' => $degdiff});
4632: foreach my $key (keys(%dynstore)) {
4633: $accesshash{$key}=$dynstore{$key};
4634: }
4635: }
4636:
4637: sub userrolelog {
4638: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4639: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4640: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4641: $userrolehash
4642: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4643: =$tend.':'.$tstart;
4644: }
4645: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4646: $userrolehash
4647: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4648: =$tend.':'.$tstart;
4649: }
4650: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4651: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4652: $domainrolehash
4653: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4654: = $tend.':'.$tstart;
4655: }
4656: }
4657:
4658: sub courserolelog {
4659: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4660: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4661: my $cdom = $1;
4662: my $cnum = $2;
4663: my $sec = $3;
4664: my $namespace = 'rolelog';
4665: my %storehash = (
4666: role => $trole,
4667: start => $tstart,
4668: end => $tend,
4669: selfenroll => $selfenroll,
4670: context => $context,
4671: );
4672: if ($trole eq 'gr') {
4673: $namespace = 'groupslog';
4674: $storehash{'group'} = $sec;
4675: } else {
4676: $storehash{'section'} = $sec;
4677: }
4678: &write_log('course',$namespace,\%storehash,$delflag,$username,
4679: $domain,$cnum,$cdom);
4680: if (($trole ne 'st') || ($sec ne '')) {
4681: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4682: }
4683: }
4684: return;
4685: }
4686:
4687: sub domainrolelog {
4688: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4689: if ($area =~ m{^/($match_domain)/$}) {
4690: my $cdom = $1;
4691: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4692: my $namespace = 'rolelog';
4693: my %storehash = (
4694: role => $trole,
4695: start => $tstart,
4696: end => $tend,
4697: context => $context,
4698: );
4699: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4700: $domain,$domconfiguser,$cdom);
4701: }
4702: return;
4703:
4704: }
4705:
4706: sub coauthorrolelog {
4707: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4708: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4709: my $audom = $1;
4710: my $auname = $2;
4711: my $namespace = 'rolelog';
4712: my %storehash = (
4713: role => $trole,
4714: start => $tstart,
4715: end => $tend,
4716: context => $context,
4717: );
4718: &write_log('author',$namespace,\%storehash,$delflag,$username,
4719: $domain,$auname,$audom);
4720: }
4721: return;
4722: }
4723:
4724: sub get_course_adv_roles {
4725: my ($cid,$codes) = @_;
4726: $cid=$env{'request.course.id'} unless (defined($cid));
4727: my %coursehash=&coursedescription($cid);
4728: my $crstype = &Apache::loncommon::course_type($cid);
4729: my %nothide=();
4730: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4731: if ($user !~ /:/) {
4732: $nothide{join(':',split(/[\@]/,$user))}=1;
4733: } else {
4734: $nothide{$user}=1;
4735: }
4736: }
4737: my @possdoms = ($coursehash{'domain'});
4738: if ($coursehash{'checkforpriv'}) {
4739: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4740: }
4741: my %returnhash=();
4742: my %dumphash=
4743: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4744: my $now=time;
4745: my %privileged;
4746: foreach my $entry (keys(%dumphash)) {
4747: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4748: if (($tstart) && ($tstart<0)) { next; }
4749: if (($tend) && ($tend<$now)) { next; }
4750: if (($tstart) && ($now<$tstart)) { next; }
4751: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4752: if ($username eq '' || $domain eq '') { next; }
4753: if ((&privileged($username,$domain,\@possdoms)) &&
4754: (!$nothide{$username.':'.$domain})) { next; }
4755: if ($role eq 'cr') { next; }
4756: if ($codes) {
4757: if ($section) { $role .= ':'.$section; }
4758: if ($returnhash{$role}) {
4759: $returnhash{$role}.=','.$username.':'.$domain;
4760: } else {
4761: $returnhash{$role}=$username.':'.$domain;
4762: }
4763: } else {
4764: my $key=&plaintext($role,$crstype);
4765: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4766: if ($returnhash{$key}) {
4767: $returnhash{$key}.=','.$username.':'.$domain;
4768: } else {
4769: $returnhash{$key}=$username.':'.$domain;
4770: }
4771: }
4772: }
4773: return %returnhash;
4774: }
4775:
4776: sub get_my_roles {
4777: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4778: unless (defined($uname)) { $uname=$env{'user.name'}; }
4779: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4780: my (%dumphash,%nothide);
4781: if ($context eq 'userroles') {
4782: %dumphash = &dump('roles',$udom,$uname);
4783: } else {
4784: %dumphash = &dump('nohist_userroles',$udom,$uname);
4785: if ($hidepriv) {
4786: my %coursehash=&coursedescription($udom.'_'.$uname);
4787: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4788: if ($user !~ /:/) {
4789: $nothide{join(':',split(/[\@]/,$user))} = 1;
4790: } else {
4791: $nothide{$user} = 1;
4792: }
4793: }
4794: }
4795: }
4796: my %returnhash=();
4797: my $now=time;
4798: my %privileged;
4799: foreach my $entry (keys(%dumphash)) {
4800: my ($role,$tend,$tstart);
4801: if ($context eq 'userroles') {
4802: next if ($entry =~ /^rolesdef/);
4803: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4804: } else {
4805: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4806: }
4807: if (($tstart) && ($tstart<0)) { next; }
4808: my $status = 'active';
4809: if (($tend) && ($tend<=$now)) {
4810: $status = 'previous';
4811: }
4812: if (($tstart) && ($now<$tstart)) {
4813: $status = 'future';
4814: }
4815: if (ref($types) eq 'ARRAY') {
4816: if (!grep(/^\Q$status\E$/,@{$types})) {
4817: next;
4818: }
4819: } else {
4820: if ($status ne 'active') {
4821: next;
4822: }
4823: }
4824: my ($rolecode,$username,$domain,$section,$area);
4825: if ($context eq 'userroles') {
4826: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4827: (undef,$domain,$username,$section) = split(/\//,$area);
4828: } else {
4829: ($role,$username,$domain,$section) = split(/\:/,$entry);
4830: }
4831: if (ref($roledoms) eq 'ARRAY') {
4832: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4833: next;
4834: }
4835: }
4836: if (ref($roles) eq 'ARRAY') {
4837: if (!grep(/^\Q$role\E$/,@{$roles})) {
4838: if ($role =~ /^cr\//) {
4839: if (!grep(/^cr$/,@{$roles})) {
4840: next;
4841: }
4842: } elsif ($role =~ /^gr\//) {
4843: if (!grep(/^gr$/,@{$roles})) {
4844: next;
4845: }
4846: } else {
4847: next;
4848: }
4849: }
4850: }
4851: if ($hidepriv) {
4852: my @privroles = ('dc','su');
4853: if ($context eq 'userroles') {
4854: next if (grep(/^\Q$role\E$/,@privroles));
4855: } else {
4856: my $possdoms = [$domain];
4857: if (ref($roledoms) eq 'ARRAY') {
4858: push(@{$possdoms},@{$roledoms});
4859: }
4860: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4861: if (!$nothide{$username.':'.$domain}) {
4862: next;
4863: }
4864: }
4865: }
4866: }
4867: if ($withsec) {
4868: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4869: $tstart.':'.$tend;
4870: } else {
4871: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4872: }
4873: }
4874: return %returnhash;
4875: }
4876:
4877: sub get_all_adhocroles {
4878: my ($dom) = @_;
4879: my @roles_by_num = ();
4880: my %domdefaults = &get_domain_defaults($dom);
4881: my (%description,%access_in_dom,%access_info);
4882: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4883: my $count = 0;
4884: my %domcurrent = %{$domdefaults{'adhocroles'}};
4885: my %ordered;
4886: foreach my $role (sort(keys(%domcurrent))) {
4887: my ($order,$desc,$access_in_dom);
4888: if (ref($domcurrent{$role}) eq 'HASH') {
4889: $order = $domcurrent{$role}{'order'};
4890: $desc = $domcurrent{$role}{'desc'};
4891: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4892: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4893: }
4894: if ($order eq '') {
4895: $order = $count;
4896: }
4897: $ordered{$order} = $role;
4898: if ($desc ne '') {
4899: $description{$role} = $desc;
4900: } else {
4901: $description{$role}= $role;
4902: }
4903: $count++;
4904: }
4905: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4906: push(@roles_by_num,$ordered{$item});
4907: }
4908: }
4909: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4910: }
4911:
4912: sub get_my_adhocroles {
4913: my ($cid,$checkreg) = @_;
4914: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4915: if ($env{'request.course.id'} eq $cid) {
4916: $cdom = $env{'course.'.$cid.'.domain'};
4917: $cnum = $env{'course.'.$cid.'.num'};
4918: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4919: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4920: $cdom = $1;
4921: $cnum = $2;
4922: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4923: $cdom,$cnum);
4924: }
4925: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4926: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4927: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4928: if ($rosterhash{$user} ne '') {
4929: my $type = (split(/:/,$rosterhash{$user}))[5];
4930: return ([],{}) if ($type eq 'auto');
4931: }
4932: }
4933: if (($cdom ne '') && ($cnum ne '')) {
4934: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4935: my $then=$env{'user.login.time'};
4936: my $update=$env{'user.update.time'};
4937: if (!$update) {
4938: $update = $then;
4939: }
4940: my @liveroles;
4941: foreach my $role ('dh','da') {
4942: if ($env{"user.role.$role./$cdom/"}) {
4943: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4944: my $limit = $update;
4945: if ($env{'request.role'} eq "$role./$cdom/") {
4946: $limit = $then;
4947: }
4948: my $activerole = 1;
4949: if ($tstart && $tstart>$limit) { $activerole = 0; }
4950: if ($tend && $tend <$limit) { $activerole = 0; }
4951: if ($activerole) {
4952: push(@liveroles,$role);
4953: }
4954: }
4955: }
4956: if (@liveroles) {
4957: if (&homeserver($cnum,$cdom) ne 'no_host') {
4958: my ($accessref,$accessinfo,%access_in_dom);
4959: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4960: if (ref($roles_by_num) eq 'ARRAY') {
4961: if (@{$roles_by_num}) {
4962: my %settings;
4963: if ($env{'request.course.id'} eq $cid) {
4964: foreach my $envkey (keys(%env)) {
4965: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4966: $settings{$1} = $env{$envkey};
4967: }
4968: }
4969: } else {
4970: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4971: }
4972: my %setincrs;
4973: if ($settings{'internal.adhocaccess'}) {
4974: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4975: }
4976: my @statuses;
4977: if ($env{'environment.inststatus'}) {
4978: @statuses = split(/,/,$env{'environment.inststatus'});
4979: }
4980: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4981: if (ref($accessref) eq 'HASH') {
4982: %access_in_dom = %{$accessref};
4983: }
4984: foreach my $role (@{$roles_by_num}) {
4985: my ($curraccess,@okstatus,@personnel);
4986: if ($setincrs{$role}) {
4987: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4988: if ($curraccess eq 'status') {
4989: @okstatus = split(/\&/,$rest);
4990: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4991: @personnel = split(/\&/,$rest);
4992: }
4993: } else {
4994: $curraccess = $access_in_dom{$role};
4995: if (ref($accessinfo) eq 'HASH') {
4996: if ($curraccess eq 'status') {
4997: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4998: @okstatus = @{$accessinfo->{$role}};
4999: }
5000: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5001: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5002: @personnel = @{$accessinfo->{$role}};
5003: }
5004: }
5005: }
5006: }
5007: if ($curraccess eq 'none') {
5008: next;
5009: } elsif ($curraccess eq 'all') {
5010: push(@possroles,$role);
5011: } elsif ($curraccess eq 'dh') {
5012: if (grep(/^dh$/,@liveroles)) {
5013: push(@possroles,$role);
5014: } else {
5015: next;
5016: }
5017: } elsif ($curraccess eq 'da') {
5018: if (grep(/^da$/,@liveroles)) {
5019: push(@possroles,$role);
5020: } else {
5021: next;
5022: }
5023: } elsif ($curraccess eq 'status') {
5024: if (@okstatus) {
5025: if (!@statuses) {
5026: if (grep(/^default$/,@okstatus)) {
5027: push(@possroles,$role);
5028: }
5029: } else {
5030: foreach my $status (@okstatus) {
5031: if (grep(/^\Q$status\E$/,@statuses)) {
5032: push(@possroles,$role);
5033: last;
5034: }
5035: }
5036: }
5037: }
5038: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5039: if (grep(/^\Q$user\E$/,@personnel)) {
5040: if ($curraccess eq 'exc') {
5041: push(@possroles,$role);
5042: }
5043: } elsif ($curraccess eq 'inc') {
5044: push(@possroles,$role);
5045: }
5046: }
5047: }
5048: }
5049: }
5050: }
5051: }
5052: }
5053: }
5054: unless (ref($description) eq 'HASH') {
5055: if (ref($roles_by_num) eq 'ARRAY') {
5056: my %desc;
5057: map { $desc{$_} = $_; } (@{$roles_by_num});
5058: $description = \%desc;
5059: } else {
5060: $description = {};
5061: }
5062: }
5063: return (\@possroles,$description);
5064: }
5065:
5066: # ----------------------------------------------------- Frontpage Announcements
5067: #
5068: #
5069:
5070: sub postannounce {
5071: my ($server,$text)=@_;
5072: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5073: unless ($text=~/\w/) { $text=''; }
5074: return &reply('setannounce:'.&escape($text),$server);
5075: }
5076:
5077: sub getannounce {
5078:
5079: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5080: my $announcement='';
5081: while (my $line = <$fh>) { $announcement .= $line; }
5082: close($fh);
5083: if ($announcement=~/\w/) {
5084: return
5085: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5086: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5087: } else {
5088: return '';
5089: }
5090: } else {
5091: return '';
5092: }
5093: }
5094:
5095: # ---------------------------------------------------------- Course ID routines
5096: # Deal with domain's nohist_courseid.db files
5097: #
5098:
5099: sub courseidput {
5100: my ($domain,$storehash,$coursehome,$caller) = @_;
5101: return unless (ref($storehash) eq 'HASH');
5102: my $outcome;
5103: if ($caller eq 'timeonly') {
5104: my $cids = '';
5105: foreach my $item (keys(%$storehash)) {
5106: $cids.=&escape($item).'&';
5107: }
5108: $cids=~s/\&$//;
5109: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5110: $coursehome);
5111: } else {
5112: my $items = '';
5113: foreach my $item (keys(%$storehash)) {
5114: $items.= &escape($item).'='.
5115: &freeze_escape($$storehash{$item}).'&';
5116: }
5117: $items=~s/\&$//;
5118: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5119: $coursehome);
5120: }
5121: if ($outcome eq 'unknown_cmd') {
5122: my $what;
5123: foreach my $cid (keys(%$storehash)) {
5124: $what .= &escape($cid).'=';
5125: foreach my $item ('description','inst_code','owner','type') {
5126: $what .= &escape($storehash->{$cid}{$item}).':';
5127: }
5128: $what =~ s/\:$/&/;
5129: }
5130: $what =~ s/\&$//;
5131: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5132: } else {
5133: return $outcome;
5134: }
5135: }
5136:
5137: sub courseiddump {
5138: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5139: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5140: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5141: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5142: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5143: my $as_hash = 1;
5144: my %returnhash;
5145: if (!$domfilter) { $domfilter=''; }
5146: my %libserv = &all_library();
5147: foreach my $tryserver (keys(%libserv)) {
5148: if ( ( $hostidflag == 1
5149: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5150: || (!defined($hostidflag)) ) {
5151:
5152: if (($domfilter eq '') ||
5153: (&host_domain($tryserver) eq $domfilter)) {
5154: my $rep;
5155: if (grep { $_ eq $tryserver } current_machine_ids()) {
5156: $rep = LONCAPA::Lond::dump_course_id_handler(
5157: join(":", (&host_domain($tryserver), $sincefilter,
5158: &escape($descfilter), &escape($instcodefilter),
5159: &escape($ownerfilter), &escape($coursefilter),
5160: &escape($typefilter), &escape($regexp_ok),
5161: $as_hash, &escape($selfenrollonly),
5162: &escape($catfilter), $showhidden, $caller,
5163: &escape($cloner), &escape($cc_clone), $cloneonly,
5164: &escape($createdbefore), &escape($createdafter),
5165: &escape($creationcontext),$domcloner,$hasuniquecode,
5166: $reqcrsdom,&escape($reqinstcode))));
5167: } else {
5168: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5169: $sincefilter.':'.&escape($descfilter).':'.
5170: &escape($instcodefilter).':'.&escape($ownerfilter).
5171: ':'.&escape($coursefilter).':'.&escape($typefilter).
5172: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5173: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5174: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5175: &escape($cc_clone).':'.$cloneonly.':'.
5176: &escape($createdbefore).':'.&escape($createdafter).':'.
5177: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5178: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5179: }
5180:
5181: my @pairs=split(/\&/,$rep);
5182: foreach my $item (@pairs) {
5183: my ($key,$value)=split(/\=/,$item,2);
5184: $key = &unescape($key);
5185: next if ($key =~ /^error: 2 /);
5186: my $result = &thaw_unescape($value);
5187: if (ref($result) eq 'HASH') {
5188: $returnhash{$key}=$result;
5189: } else {
5190: my @responses = split(/:/,$value);
5191: my @items = ('description','inst_code','owner','type');
5192: for (my $i=0; $i<@responses; $i++) {
5193: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5194: }
5195: }
5196: }
5197: }
5198: }
5199: }
5200: return %returnhash;
5201: }
5202:
5203: sub courselastaccess {
5204: my ($cdom,$cnum,$hostidref) = @_;
5205: my %returnhash;
5206: if ($cdom && $cnum) {
5207: my $chome = &homeserver($cnum,$cdom);
5208: if ($chome ne 'no_host') {
5209: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5210: &extract_lastaccess(\%returnhash,$rep);
5211: }
5212: } else {
5213: if (!$cdom) { $cdom=''; }
5214: my %libserv = &all_library();
5215: foreach my $tryserver (keys(%libserv)) {
5216: if (ref($hostidref) eq 'ARRAY') {
5217: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5218: }
5219: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5220: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5221: &extract_lastaccess(\%returnhash,$rep);
5222: }
5223: }
5224: }
5225: return %returnhash;
5226: }
5227:
5228: sub extract_lastaccess {
5229: my ($returnhash,$rep) = @_;
5230: if (ref($returnhash) eq 'HASH') {
5231: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5232: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5233: $rep eq '') {
5234: my @pairs=split(/\&/,$rep);
5235: foreach my $item (@pairs) {
5236: my ($key,$value)=split(/\=/,$item,2);
5237: $key = &unescape($key);
5238: next if ($key =~ /^error: 2 /);
5239: $returnhash->{$key} = &thaw_unescape($value);
5240: }
5241: }
5242: }
5243: return;
5244: }
5245:
5246: # ---------------------------------------------------------- DC e-mail
5247:
5248: sub dcmailput {
5249: my ($domain,$msgid,$message,$server)=@_;
5250: my $status = &Apache::lonnet::critical(
5251: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5252: &escape($message),$server);
5253: return $status;
5254: }
5255:
5256: sub dcmaildump {
5257: my ($dom,$startdate,$enddate,$senders) = @_;
5258: my %returnhash=();
5259:
5260: if (defined(&domain($dom,'primary'))) {
5261: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5262: &escape($enddate).':';
5263: my @esc_senders=map { &escape($_)} @$senders;
5264: $cmd.=&escape(join('&',@esc_senders));
5265: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5266: my ($key,$value) = split(/\=/,$line,2);
5267: if (($key) && ($value)) {
5268: $returnhash{&unescape($key)} = &unescape($value);
5269: }
5270: }
5271: }
5272: return %returnhash;
5273: }
5274: # ---------------------------------------------------------- Domain roles
5275:
5276: sub get_domain_roles {
5277: my ($dom,$roles,$startdate,$enddate)=@_;
5278: if ((!defined($startdate)) || ($startdate eq '')) {
5279: $startdate = '.';
5280: }
5281: if ((!defined($enddate)) || ($enddate eq '')) {
5282: $enddate = '.';
5283: }
5284: my $rolelist;
5285: if (ref($roles) eq 'ARRAY') {
5286: $rolelist = join('&',@{$roles});
5287: }
5288: my %personnel = ();
5289:
5290: my %servers = &get_servers($dom,'library');
5291: foreach my $tryserver (keys(%servers)) {
5292: %{$personnel{$tryserver}}=();
5293: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5294: &escape($startdate).':'.
5295: &escape($enddate).':'.
5296: &escape($rolelist), $tryserver))) {
5297: my ($key,$value) = split(/\=/,$line,2);
5298: if (($key) && ($value)) {
5299: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5300: }
5301: }
5302: }
5303: return %personnel;
5304: }
5305:
5306: sub get_active_domroles {
5307: my ($dom,$roles) = @_;
5308: return () unless (ref($roles) eq 'ARRAY');
5309: my $now = time;
5310: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5311: my %domroles;
5312: foreach my $server (keys(%dompersonnel)) {
5313: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5314: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5315: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5316: }
5317: }
5318: return %domroles;
5319: }
5320:
5321: # ----------------------------------------------------------- Interval timing
5322:
5323: {
5324: # Caches needed for speedup of navmaps
5325: # We don't want to cache this for very long at all (5 seconds at most)
5326: #
5327: # The user for whom we cache
5328: my $cachedkey='';
5329: # The cached times for this user
5330: my %cachedtimes=();
5331: # When this was last done
5332: my $cachedtime='';
5333:
5334: sub load_all_first_access {
5335: my ($uname,$udom,$ignorecache)=@_;
5336: if (($cachedkey eq $uname.':'.$udom) &&
5337: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5338: (!$ignorecache)) {
5339: return;
5340: }
5341: $cachedtime=time;
5342: $cachedkey=$uname.':'.$udom;
5343: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5344: }
5345:
5346: sub get_first_access {
5347: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5348: my ($symb,$courseid,$udom,$uname)=&whichuser();
5349: if ($argsymb) { $symb=$argsymb; }
5350: my ($map,$id,$res)=&decode_symb($symb);
5351: if ($argmap) { $map = $argmap; }
5352: if ($type eq 'course') {
5353: $res='course';
5354: } elsif ($type eq 'map') {
5355: $res=&symbread($map);
5356: } else {
5357: $res=$symb;
5358: }
5359: &load_all_first_access($uname,$udom,$ignorecache);
5360: return $cachedtimes{"$courseid\0$res"};
5361: }
5362:
5363: sub set_first_access {
5364: my ($type,$interval)=@_;
5365: my ($symb,$courseid,$udom,$uname)=&whichuser();
5366: my ($map,$id,$res)=&decode_symb($symb);
5367: if ($type eq 'course') {
5368: $res='course';
5369: } elsif ($type eq 'map') {
5370: $res=&symbread($map);
5371: } else {
5372: $res=$symb;
5373: }
5374: $cachedkey='';
5375: my $firstaccess=&get_first_access($type,$symb,$map);
5376: if ($firstaccess) {
5377: &logthis("First access time already set ($firstaccess) when attempting ".
5378: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5379: "in $courseid");
5380: return 'already_set';
5381: } else {
5382: my $start = time;
5383: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5384: $udom,$uname);
5385: if ($putres eq 'ok') {
5386: &put('timerinterval',{"$courseid\0$res"=>$interval},
5387: $udom,$uname);
5388: &appenv(
5389: {
5390: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5391: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5392: }
5393: );
5394: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5395: $cachedtimes{"$courseid\0$res"} = $start;
5396: }
5397: } elsif ($putres ne 'refused') {
5398: &logthis("Result: $putres when attempting to set first access time ".
5399: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5400: }
5401: return $putres;
5402: }
5403: return 'already_set';
5404: }
5405: }
5406:
5407: # --------------------------------------------- Set Expire Date for Spreadsheet
5408:
5409: sub expirespread {
5410: my ($uname,$udom,$stype,$usymb)=@_;
5411: my $cid=$env{'request.course.id'};
5412: if ($cid) {
5413: my $now=time;
5414: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5415: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5416: $env{'course.'.$cid.'.num'}.
5417: ':nohist_expirationdates:'.
5418: &escape($key).'='.$now,
5419: $env{'course.'.$cid.'.home'})
5420: }
5421: return 'ok';
5422: }
5423:
5424: # ----------------------------------------------------- Devalidate Spreadsheets
5425:
5426: sub devalidate {
5427: my ($symb,$uname,$udom)=@_;
5428: my $cid=$env{'request.course.id'};
5429: if ($cid) {
5430: # delete the stored spreadsheets for
5431: # - the student level sheet of this user in course's homespace
5432: # - the assessment level sheet for this resource
5433: # for this user in user's homespace
5434: # - current conditional state info
5435: my $key=$uname.':'.$udom.':';
5436: my $status=
5437: &del('nohist_calculatedsheets',
5438: [$key.'studentcalc:'],
5439: $env{'course.'.$cid.'.domain'},
5440: $env{'course.'.$cid.'.num'})
5441: .' '.
5442: &del('nohist_calculatedsheets_'.$cid,
5443: [$key.'assesscalc:'.$symb],$udom,$uname);
5444: unless ($status eq 'ok ok') {
5445: &logthis('Could not devalidate spreadsheet '.
5446: $uname.' at '.$udom.' for '.
5447: $symb.': '.$status);
5448: }
5449: &delenv('user.state.'.$cid);
5450: }
5451: }
5452:
5453: sub get_scalar {
5454: my ($string,$end) = @_;
5455: my $value;
5456: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5457: $value = $1;
5458: } elsif ($$string =~ s/^([^&]*?)&//) {
5459: $value = $1;
5460: }
5461: return &unescape($value);
5462: }
5463:
5464: sub array2str {
5465: my (@array) = @_;
5466: my $result=&arrayref2str(\@array);
5467: $result=~s/^__ARRAY_REF__//;
5468: $result=~s/__END_ARRAY_REF__$//;
5469: return $result;
5470: }
5471:
5472: sub arrayref2str {
5473: my ($arrayref) = @_;
5474: my $result='__ARRAY_REF__';
5475: foreach my $elem (@$arrayref) {
5476: if(ref($elem) eq 'ARRAY') {
5477: $result.=&arrayref2str($elem).'&';
5478: } elsif(ref($elem) eq 'HASH') {
5479: $result.=&hashref2str($elem).'&';
5480: } elsif(ref($elem)) {
5481: #print("Got a ref of ".(ref($elem))." skipping.");
5482: } else {
5483: $result.=&escape($elem).'&';
5484: }
5485: }
5486: $result=~s/\&$//;
5487: $result .= '__END_ARRAY_REF__';
5488: return $result;
5489: }
5490:
5491: sub hash2str {
5492: my (%hash) = @_;
5493: my $result=&hashref2str(\%hash);
5494: $result=~s/^__HASH_REF__//;
5495: $result=~s/__END_HASH_REF__$//;
5496: return $result;
5497: }
5498:
5499: sub hashref2str {
5500: my ($hashref)=@_;
5501: my $result='__HASH_REF__';
5502: foreach my $key (sort(keys(%$hashref))) {
5503: if (ref($key) eq 'ARRAY') {
5504: $result.=&arrayref2str($key).'=';
5505: } elsif (ref($key) eq 'HASH') {
5506: $result.=&hashref2str($key).'=';
5507: } elsif (ref($key)) {
5508: $result.='=';
5509: #print("Got a ref of ".(ref($key))." skipping.");
5510: } else {
5511: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5512: }
5513:
5514: if(ref($hashref->{$key}) eq 'ARRAY') {
5515: $result.=&arrayref2str($hashref->{$key}).'&';
5516: } elsif(ref($hashref->{$key}) eq 'HASH') {
5517: $result.=&hashref2str($hashref->{$key}).'&';
5518: } elsif(ref($hashref->{$key})) {
5519: $result.='&';
5520: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5521: } else {
5522: $result.=&escape($hashref->{$key}).'&';
5523: }
5524: }
5525: $result=~s/\&$//;
5526: $result .= '__END_HASH_REF__';
5527: return $result;
5528: }
5529:
5530: sub str2hash {
5531: my ($string)=@_;
5532: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5533: return %$hash;
5534: }
5535:
5536: sub str2hashref {
5537: my ($string) = @_;
5538:
5539: my %hash;
5540:
5541: if($string !~ /^__HASH_REF__/) {
5542: if (! ($string eq '' || !defined($string))) {
5543: $hash{'error'}='Not hash reference';
5544: }
5545: return (\%hash, $string);
5546: }
5547:
5548: $string =~ s/^__HASH_REF__//;
5549:
5550: while($string !~ /^__END_HASH_REF__/) {
5551: #key
5552: my $key='';
5553: if($string =~ /^__HASH_REF__/) {
5554: ($key, $string)=&str2hashref($string);
5555: if(defined($key->{'error'})) {
5556: $hash{'error'}='Bad data';
5557: return (\%hash, $string);
5558: }
5559: } elsif($string =~ /^__ARRAY_REF__/) {
5560: ($key, $string)=&str2arrayref($string);
5561: if($key->[0] eq 'Array reference error') {
5562: $hash{'error'}='Bad data';
5563: return (\%hash, $string);
5564: }
5565: } else {
5566: $string =~ s/^(.*?)=//;
5567: $key=&unescape($1);
5568: }
5569: $string =~ s/^=//;
5570:
5571: #value
5572: my $value='';
5573: if($string =~ /^__HASH_REF__/) {
5574: ($value, $string)=&str2hashref($string);
5575: if(defined($value->{'error'})) {
5576: $hash{'error'}='Bad data';
5577: return (\%hash, $string);
5578: }
5579: } elsif($string =~ /^__ARRAY_REF__/) {
5580: ($value, $string)=&str2arrayref($string);
5581: if($value->[0] eq 'Array reference error') {
5582: $hash{'error'}='Bad data';
5583: return (\%hash, $string);
5584: }
5585: } else {
5586: $value=&get_scalar(\$string,'__END_HASH_REF__');
5587: }
5588: $string =~ s/^&//;
5589:
5590: $hash{$key}=$value;
5591: }
5592:
5593: $string =~ s/^__END_HASH_REF__//;
5594:
5595: return (\%hash, $string);
5596: }
5597:
5598: sub str2array {
5599: my ($string)=@_;
5600: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5601: return @$array;
5602: }
5603:
5604: sub str2arrayref {
5605: my ($string) = @_;
5606: my @array;
5607:
5608: if($string !~ /^__ARRAY_REF__/) {
5609: if (! ($string eq '' || !defined($string))) {
5610: $array[0]='Array reference error';
5611: }
5612: return (\@array, $string);
5613: }
5614:
5615: $string =~ s/^__ARRAY_REF__//;
5616:
5617: while($string !~ /^__END_ARRAY_REF__/) {
5618: my $value='';
5619: if($string =~ /^__HASH_REF__/) {
5620: ($value, $string)=&str2hashref($string);
5621: if(defined($value->{'error'})) {
5622: $array[0] ='Array reference error';
5623: return (\@array, $string);
5624: }
5625: } elsif($string =~ /^__ARRAY_REF__/) {
5626: ($value, $string)=&str2arrayref($string);
5627: if($value->[0] eq 'Array reference error') {
5628: $array[0] ='Array reference error';
5629: return (\@array, $string);
5630: }
5631: } else {
5632: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5633: }
5634: $string =~ s/^&//;
5635:
5636: push(@array, $value);
5637: }
5638:
5639: $string =~ s/^__END_ARRAY_REF__//;
5640:
5641: return (\@array, $string);
5642: }
5643:
5644: # -------------------------------------------------------------------Temp Store
5645:
5646: sub tmpreset {
5647: my ($symb,$namespace,$domain,$stuname) = @_;
5648: if (!$symb) {
5649: $symb=&symbread();
5650: if (!$symb) { $symb= $env{'request.url'}; }
5651: }
5652: $symb=escape($symb);
5653:
5654: if (!$namespace) { $namespace=$env{'request.state'}; }
5655: $namespace=~s/\//\_/g;
5656: $namespace=~s/\W//g;
5657:
5658: if (!$domain) { $domain=$env{'user.domain'}; }
5659: if (!$stuname) { $stuname=$env{'user.name'}; }
5660: if ($domain eq 'public' && $stuname eq 'public') {
5661: $stuname=$ENV{'REMOTE_ADDR'};
5662: }
5663: my $path=LONCAPA::tempdir();
5664: my %hash;
5665: if (tie(%hash,'GDBM_File',
5666: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5667: &GDBM_WRCREAT(),0640)) {
5668: foreach my $key (keys(%hash)) {
5669: if ($key=~ /:$symb/) {
5670: delete($hash{$key});
5671: }
5672: }
5673: }
5674: }
5675:
5676: sub tmpstore {
5677: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5678:
5679: if (!$symb) {
5680: $symb=&symbread();
5681: if (!$symb) { $symb= $env{'request.url'}; }
5682: }
5683: $symb=escape($symb);
5684:
5685: if (!$namespace) {
5686: # I don't think we would ever want to store this for a course.
5687: # it seems this will only be used if we don't have a course.
5688: #$namespace=$env{'request.course.id'};
5689: #if (!$namespace) {
5690: $namespace=$env{'request.state'};
5691: #}
5692: }
5693: $namespace=~s/\//\_/g;
5694: $namespace=~s/\W//g;
5695: if (!$domain) { $domain=$env{'user.domain'}; }
5696: if (!$stuname) { $stuname=$env{'user.name'}; }
5697: if ($domain eq 'public' && $stuname eq 'public') {
5698: $stuname=$ENV{'REMOTE_ADDR'};
5699: }
5700: my $now=time;
5701: my %hash;
5702: my $path=LONCAPA::tempdir();
5703: if (tie(%hash,'GDBM_File',
5704: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5705: &GDBM_WRCREAT(),0640)) {
5706: $hash{"version:$symb"}++;
5707: my $version=$hash{"version:$symb"};
5708: my $allkeys='';
5709: foreach my $key (keys(%$storehash)) {
5710: $allkeys.=$key.':';
5711: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5712: }
5713: $hash{"$version:$symb:timestamp"}=$now;
5714: $allkeys.='timestamp';
5715: $hash{"$version:keys:$symb"}=$allkeys;
5716: if (untie(%hash)) {
5717: return 'ok';
5718: } else {
5719: return "error:$!";
5720: }
5721: } else {
5722: return "error:$!";
5723: }
5724: }
5725:
5726: # -----------------------------------------------------------------Temp Restore
5727:
5728: sub tmprestore {
5729: my ($symb,$namespace,$domain,$stuname) = @_;
5730:
5731: if (!$symb) {
5732: $symb=&symbread();
5733: if (!$symb) { $symb= $env{'request.url'}; }
5734: }
5735: $symb=escape($symb);
5736:
5737: if (!$namespace) { $namespace=$env{'request.state'}; }
5738:
5739: if (!$domain) { $domain=$env{'user.domain'}; }
5740: if (!$stuname) { $stuname=$env{'user.name'}; }
5741: if ($domain eq 'public' && $stuname eq 'public') {
5742: $stuname=$ENV{'REMOTE_ADDR'};
5743: }
5744: my %returnhash;
5745: $namespace=~s/\//\_/g;
5746: $namespace=~s/\W//g;
5747: my %hash;
5748: my $path=LONCAPA::tempdir();
5749: if (tie(%hash,'GDBM_File',
5750: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5751: &GDBM_READER(),0640)) {
5752: my $version=$hash{"version:$symb"};
5753: $returnhash{'version'}=$version;
5754: my $scope;
5755: for ($scope=1;$scope<=$version;$scope++) {
5756: my $vkeys=$hash{"$scope:keys:$symb"};
5757: my @keys=split(/:/,$vkeys);
5758: my $key;
5759: $returnhash{"$scope:keys"}=$vkeys;
5760: foreach $key (@keys) {
5761: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5762: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5763: }
5764: }
5765: if (!(untie(%hash))) {
5766: return "error:$!";
5767: }
5768: } else {
5769: return "error:$!";
5770: }
5771: return %returnhash;
5772: }
5773:
5774: # ----------------------------------------------------------------------- Store
5775:
5776: sub store {
5777: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5778: my $home='';
5779:
5780: if ($stuname) { $home=&homeserver($stuname,$domain); }
5781:
5782: $symb=&symbclean($symb);
5783: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5784:
5785: if (!$domain) { $domain=$env{'user.domain'}; }
5786: if (!$stuname) { $stuname=$env{'user.name'}; }
5787:
5788: &devalidate($symb,$stuname,$domain);
5789:
5790: $symb=escape($symb);
5791: if (!$namespace) {
5792: unless ($namespace=$env{'request.course.id'}) {
5793: return '';
5794: }
5795: }
5796: if (!$home) { $home=$env{'user.home'}; }
5797:
5798: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5799: $$storehash{'host'}=$perlvar{'lonHostID'};
5800:
5801: my $namevalue='';
5802: foreach my $key (keys(%$storehash)) {
5803: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5804: }
5805: $namevalue=~s/\&$//;
5806: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5807: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5808: }
5809:
5810: # -------------------------------------------------------------- Critical Store
5811:
5812: sub cstore {
5813: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5814: my $home='';
5815:
5816: if ($stuname) { $home=&homeserver($stuname,$domain); }
5817:
5818: $symb=&symbclean($symb);
5819: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5820:
5821: if (!$domain) { $domain=$env{'user.domain'}; }
5822: if (!$stuname) { $stuname=$env{'user.name'}; }
5823:
5824: &devalidate($symb,$stuname,$domain);
5825:
5826: $symb=escape($symb);
5827: if (!$namespace) {
5828: unless ($namespace=$env{'request.course.id'}) {
5829: return '';
5830: }
5831: }
5832: if (!$home) { $home=$env{'user.home'}; }
5833:
5834: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5835: $$storehash{'host'}=$perlvar{'lonHostID'};
5836:
5837: my $namevalue='';
5838: foreach my $key (keys(%$storehash)) {
5839: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5840: }
5841: $namevalue=~s/\&$//;
5842: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5843: return critical
5844: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5845: }
5846:
5847: # --------------------------------------------------------------------- Restore
5848:
5849: sub restore {
5850: my ($symb,$namespace,$domain,$stuname) = @_;
5851: my $home='';
5852:
5853: if ($stuname) { $home=&homeserver($stuname,$domain); }
5854:
5855: if (!$symb) {
5856: return if ($namespace eq 'courserequests');
5857: unless ($symb=escape(&symbread())) { return ''; }
5858: } else {
5859: unless ($namespace eq 'courserequests') {
5860: $symb=&escape(&symbclean($symb));
5861: }
5862: }
5863: if (!$namespace) {
5864: unless ($namespace=$env{'request.course.id'}) {
5865: return '';
5866: }
5867: }
5868: if (!$domain) { $domain=$env{'user.domain'}; }
5869: if (!$stuname) { $stuname=$env{'user.name'}; }
5870: if (!$home) { $home=$env{'user.home'}; }
5871: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5872:
5873: my %returnhash=();
5874: foreach my $line (split(/\&/,$answer)) {
5875: my ($name,$value)=split(/\=/,$line);
5876: $returnhash{&unescape($name)}=&thaw_unescape($value);
5877: }
5878: my $version;
5879: for ($version=1;$version<=$returnhash{'version'};$version++) {
5880: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5881: $returnhash{$item}=$returnhash{$version.':'.$item};
5882: }
5883: }
5884: return %returnhash;
5885: }
5886:
5887: # ---------------------------------------------------------- Course Description
5888: #
5889: #
5890:
5891: sub coursedescription {
5892: my ($courseid,$args)=@_;
5893: $courseid=~s/^\///;
5894: $courseid=~s/\_/\//g;
5895: my ($cdomain,$cnum)=split(/\//,$courseid);
5896: my $chome=&homeserver($cnum,$cdomain);
5897: my $normalid=$cdomain.'_'.$cnum;
5898: # need to always cache even if we get errors otherwise we keep
5899: # trying and trying and trying to get the course description.
5900: my %envhash=();
5901: my %returnhash=();
5902:
5903: my $expiretime=600;
5904: if ($env{'request.course.id'} eq $normalid) {
5905: $expiretime=120;
5906: }
5907:
5908: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5909: if (!$args->{'freshen_cache'}
5910: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5911: foreach my $key (keys(%env)) {
5912: next if ($key !~ /^\Q$prefix\E(.*)/);
5913: my ($setting) = $1;
5914: $returnhash{$setting} = $env{$key};
5915: }
5916: return %returnhash;
5917: }
5918:
5919: # get the data again
5920:
5921: if (!$args->{'one_time'}) {
5922: $envhash{'course.'.$normalid.'.last_cache'}=time;
5923: }
5924:
5925: if ($chome ne 'no_host') {
5926: %returnhash=&dump('environment',$cdomain,$cnum);
5927: if (!exists($returnhash{'con_lost'})) {
5928: my $username = $env{'user.name'}; # Defult username
5929: if(defined $args->{'user'}) {
5930: $username = $args->{'user'};
5931: }
5932: $returnhash{'home'}= $chome;
5933: $returnhash{'domain'} = $cdomain;
5934: $returnhash{'num'} = $cnum;
5935: if (!defined($returnhash{'type'})) {
5936: $returnhash{'type'} = 'Course';
5937: }
5938: while (my ($name,$value) = each %returnhash) {
5939: $envhash{'course.'.$normalid.'.'.$name}=$value;
5940: }
5941: $returnhash{'url'}=&clutter($returnhash{'url'});
5942: $returnhash{'fn'}=LONCAPA::tempdir() .
5943: $username.'_'.$cdomain.'_'.$cnum;
5944: $envhash{'course.'.$normalid.'.home'}=$chome;
5945: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5946: $envhash{'course.'.$normalid.'.num'}=$cnum;
5947: }
5948: }
5949: if (!$args->{'one_time'}) {
5950: &appenv(\%envhash);
5951: }
5952: return %returnhash;
5953: }
5954:
5955: sub update_released_required {
5956: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5957: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5958: $cid = $env{'request.course.id'};
5959: $cdom = $env{'course.'.$cid.'.domain'};
5960: $cnum = $env{'course.'.$cid.'.num'};
5961: $chome = $env{'course.'.$cid.'.home'};
5962: }
5963: if ($needsrelease) {
5964: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5965: my $needsupdate;
5966: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5967: $needsupdate = 1;
5968: } else {
5969: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5970: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5971: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5972: $needsupdate = 1;
5973: }
5974: }
5975: if ($needsupdate) {
5976: my %needshash = (
5977: 'internal.releaserequired' => $needsrelease,
5978: );
5979: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5980: if ($putresult eq 'ok') {
5981: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5982: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5983: if (ref($crsinfo{$cid}) eq 'HASH') {
5984: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5985: &courseidput($cdom,\%crsinfo,$chome,'notime');
5986: }
5987: }
5988: }
5989: }
5990: return;
5991: }
5992:
5993: # -------------------------------------------------See if a user is privileged
5994:
5995: sub privileged {
5996: my ($username,$domain,$possdomains,$possroles)=@_;
5997: my $now = time;
5998: my $roles;
5999: if (ref($possroles) eq 'ARRAY') {
6000: $roles = $possroles;
6001: } else {
6002: $roles = ['dc','su'];
6003: }
6004: if (ref($possdomains) eq 'ARRAY') {
6005: my %privileged = &privileged_by_domain($possdomains,$roles);
6006: foreach my $dom (@{$possdomains}) {
6007: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6008: (ref($privileged{$dom}) eq 'HASH')) {
6009: foreach my $role (@{$roles}) {
6010: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6011: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6012: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6013: return 1 unless (($end && $end < $now) ||
6014: ($start && $start > $now));
6015: }
6016: }
6017: }
6018: }
6019: }
6020: } else {
6021: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6022: my $now = time;
6023:
6024: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6025: my ($trole, $tend, $tstart) = split(/_/, $role);
6026: if (grep(/^\Q$trole\E$/,@{$roles})) {
6027: return 1 unless ($tend && $tend < $now)
6028: or ($tstart && $tstart > $now);
6029: }
6030: }
6031: }
6032: return 0;
6033: }
6034:
6035: sub privileged_by_domain {
6036: my ($domains,$roles) = @_;
6037: my %privileged = ();
6038: my $cachetime = 60*60*24;
6039: my $now = time;
6040: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6041: return %privileged;
6042: }
6043: foreach my $dom (@{$domains}) {
6044: next if (ref($privileged{$dom}) eq 'HASH');
6045: my $needroles;
6046: foreach my $role (@{$roles}) {
6047: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6048: if (defined($cached)) {
6049: if (ref($result) eq 'HASH') {
6050: $privileged{$dom}{$role} = $result;
6051: }
6052: } else {
6053: $needroles = 1;
6054: }
6055: }
6056: if ($needroles) {
6057: my %dompersonnel = &get_domain_roles($dom,$roles);
6058: $privileged{$dom} = {};
6059: foreach my $server (keys(%dompersonnel)) {
6060: if (ref($dompersonnel{$server}) eq 'HASH') {
6061: foreach my $item (keys(%{$dompersonnel{$server}})) {
6062: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6063: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6064: next if ($end && $end < $now);
6065: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6066: $dompersonnel{$server}{$item};
6067: }
6068: }
6069: }
6070: if (ref($privileged{$dom}) eq 'HASH') {
6071: foreach my $role (@{$roles}) {
6072: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6073: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6074: } else {
6075: my %hash = ();
6076: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6077: }
6078: }
6079: }
6080: }
6081: }
6082: return %privileged;
6083: }
6084:
6085: # -------------------------------------------------------- Get user privileges
6086:
6087: sub rolesinit {
6088: my ($domain, $username) = @_;
6089: my %userroles = ('user.login.time' => time);
6090: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6091:
6092: # firstaccess and timerinterval are related to timed maps/resources.
6093: # also, blocking can be triggered by an activating timer
6094: # it's saved in the user's %env.
6095: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6096: my %timerinterval = &dump('timerinterval', $domain, $username);
6097: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6098: %timerintchk, %timerintenv);
6099:
6100: foreach my $key (keys(%firstaccess)) {
6101: my ($cid, $rest) = split(/\0/, $key);
6102: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6103: }
6104:
6105: foreach my $key (keys(%timerinterval)) {
6106: my ($cid,$rest) = split(/\0/,$key);
6107: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6108: }
6109:
6110: my %allroles=();
6111: my %allgroups=();
6112:
6113: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6114: my $role = $rolesdump{$area};
6115: $area =~ s/\_\w\w$//;
6116:
6117: my ($trole, $tend, $tstart, $group_privs);
6118:
6119: if ($role =~ /^cr/) {
6120: # Custom role, defined by a user
6121: # e.g., user.role.cr/msu/smith/mynewrole
6122: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6123: $trole = $1;
6124: ($tend, $tstart) = split('_', $2);
6125: } else {
6126: $trole = $role;
6127: }
6128: } elsif ($role =~ m|^gr/|) {
6129: # Role of member in a group, defined within a course/community
6130: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6131: ($trole, $tend, $tstart) = split(/_/, $role);
6132: next if $tstart eq '-1';
6133: ($trole, $group_privs) = split(/\//, $trole);
6134: $group_privs = &unescape($group_privs);
6135: } else {
6136: # Just a normal role, defined in roles.tab
6137: ($trole, $tend, $tstart) = split(/_/,$role);
6138: }
6139:
6140: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6141: $username);
6142: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6143:
6144: # role expired or not available yet?
6145: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6146: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6147:
6148: next if $area eq '' or $trole eq '';
6149:
6150: my $spec = "$trole.$area";
6151: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6152:
6153: if ($trole =~ /^cr\//) {
6154: # Custom role, defined by a user
6155: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6156: } elsif ($trole eq 'gr') {
6157: # Role of a member in a group, defined within a course/community
6158: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6159: next;
6160: } else {
6161: # Normal role, defined in roles.tab
6162: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6163: }
6164:
6165: my $cid = $tdomain.'_'.$trest;
6166: unless ($firstaccchk{$cid}) {
6167: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6168: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6169: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6170: $coursetimerstarts{$cid}{$item};
6171: }
6172: }
6173: $firstaccchk{$cid} = 1;
6174: }
6175: unless ($timerintchk{$cid}) {
6176: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6177: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6178: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6179: $coursetimerintervals{$cid}{$item};
6180: }
6181: }
6182: $timerintchk{$cid} = 1;
6183: }
6184: }
6185:
6186: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6187: \%allroles, \%allgroups);
6188: $env{'user.adv'} = $userroles{'user.adv'};
6189: $env{'user.rar'} = $userroles{'user.rar'};
6190:
6191: return (\%userroles,\%firstaccenv,\%timerintenv);
6192: }
6193:
6194: sub set_arearole {
6195: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6196: unless ($nolog) {
6197: # log the associated role with the area
6198: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6199: }
6200: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6201: }
6202:
6203: sub custom_roleprivs {
6204: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6205: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6206: my $homsvr = &homeserver($rauthor,$rdomain);
6207: if (&hostname($homsvr) ne '') {
6208: my ($rdummy,$roledef)=
6209: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6210: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6211: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6212: if (defined($syspriv)) {
6213: if ($trest =~ /^$match_community$/) {
6214: $syspriv =~ s/bre\&S//;
6215: }
6216: $$allroles{'cm./'}.=':'.$syspriv;
6217: $$allroles{$spec.'./'}.=':'.$syspriv;
6218: }
6219: if ($tdomain ne '') {
6220: if (defined($dompriv)) {
6221: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6222: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6223: }
6224: if (($trest ne '') && (defined($coursepriv))) {
6225: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6226: my $rolename = $1;
6227: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6228: }
6229: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6230: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6231: }
6232: }
6233: }
6234: }
6235: }
6236:
6237: sub course_adhocrole_privs {
6238: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6239: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6240: if ($overrides{"internal.adhocpriv.$rolename"}) {
6241: my (%currprivs,%storeprivs);
6242: foreach my $item (split(/:/,$coursepriv)) {
6243: my ($priv,$restrict) = split(/\&/,$item);
6244: $currprivs{$priv} = $restrict;
6245: }
6246: my (%possadd,%possremove,%full);
6247: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6248: my ($priv,$restrict)=split(/\&/,$item);
6249: $full{$priv} = $restrict;
6250: }
6251: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6252: next if ($item eq '');
6253: my ($rule,$rest) = split(/=/,$item);
6254: next unless (($rule eq 'off') || ($rule eq 'on'));
6255: foreach my $priv (split(/:/,$rest)) {
6256: if ($priv ne '') {
6257: if ($rule eq 'off') {
6258: $possremove{$priv} = 1;
6259: } else {
6260: $possadd{$priv} = 1;
6261: }
6262: }
6263: }
6264: }
6265: foreach my $priv (sort(keys(%full))) {
6266: if (exists($currprivs{$priv})) {
6267: unless (exists($possremove{$priv})) {
6268: $storeprivs{$priv} = $currprivs{$priv};
6269: }
6270: } elsif (exists($possadd{$priv})) {
6271: $storeprivs{$priv} = $full{$priv};
6272: }
6273: }
6274: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6275: }
6276: return $coursepriv;
6277: }
6278:
6279: sub group_roleprivs {
6280: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6281: my $access = 1;
6282: my $now = time;
6283: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6284: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6285: if ($access) {
6286: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6287: $$allgroups{$course}{$group} .=':'.$group_privs;
6288: }
6289: }
6290:
6291: sub standard_roleprivs {
6292: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6293: if (defined($pr{$trole.':s'})) {
6294: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6295: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6296: }
6297: if ($tdomain ne '') {
6298: if (defined($pr{$trole.':d'})) {
6299: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6300: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6301: }
6302: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6303: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6304: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6305: }
6306: }
6307: }
6308:
6309: sub set_userprivs {
6310: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6311: my $author=0;
6312: my $adv=0;
6313: my $rar=0;
6314: my %grouproles = ();
6315: if (keys(%{$allgroups}) > 0) {
6316: my @groupkeys;
6317: foreach my $role (keys(%{$allroles})) {
6318: push(@groupkeys,$role);
6319: }
6320: if (ref($groups_roles) eq 'HASH') {
6321: foreach my $key (keys(%{$groups_roles})) {
6322: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6323: push(@groupkeys,$key);
6324: }
6325: }
6326: }
6327: if (@groupkeys > 0) {
6328: foreach my $role (@groupkeys) {
6329: my ($trole,$area,$sec,$extendedarea);
6330: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6331: $trole = $1;
6332: $area = $2;
6333: $sec = $3;
6334: $extendedarea = $area.$sec;
6335: if (exists($$allgroups{$area})) {
6336: foreach my $group (keys(%{$$allgroups{$area}})) {
6337: my $spec = $trole.'.'.$extendedarea;
6338: $grouproles{$spec.'.'.$area.'/'.$group} =
6339: $$allgroups{$area}{$group};
6340: }
6341: }
6342: }
6343: }
6344: }
6345: }
6346: foreach my $group (keys(%grouproles)) {
6347: $$allroles{$group} = $grouproles{$group};
6348: }
6349: foreach my $role (keys(%{$allroles})) {
6350: my %thesepriv;
6351: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6352: foreach my $item (split(/:/,$$allroles{$role})) {
6353: if ($item ne '') {
6354: my ($privilege,$restrictions)=split(/&/,$item);
6355: if ($restrictions eq '') {
6356: $thesepriv{$privilege}='F';
6357: } elsif ($thesepriv{$privilege} ne 'F') {
6358: $thesepriv{$privilege}.=$restrictions;
6359: }
6360: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6361: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6362: }
6363: }
6364: my $thesestr='';
6365: foreach my $priv (sort(keys(%thesepriv))) {
6366: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6367: }
6368: $userroles->{'user.priv.'.$role} = $thesestr;
6369: }
6370: return ($author,$adv,$rar);
6371: }
6372:
6373: sub role_status {
6374: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6375: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6376: my ($one,$two) = split(m{\./},$rolekey,2);
6377: (undef,undef,$$role) = split(/\./,$one,3);
6378: unless (!defined($$role) || $$role eq '') {
6379: $$where = '/'.$two;
6380: $$trolecode=$$role.'.'.$$where;
6381: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6382: $$tstatus='is';
6383: if ($$tstart && $$tstart>$update) {
6384: $$tstatus='future';
6385: if ($$tstart<$now) {
6386: if ($$tstart && $$tstart>$refresh) {
6387: if (($$where ne '') && ($$role ne '')) {
6388: my (%allroles,%allgroups,$group_privs,
6389: %groups_roles,@rolecodes);
6390: my %userroles = (
6391: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6392: );
6393: @rolecodes = ('cm');
6394: my $spec=$$role.'.'.$$where;
6395: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6396: if ($$role =~ /^cr\//) {
6397: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6398: push(@rolecodes,'cr');
6399: } elsif ($$role eq 'gr') {
6400: push(@rolecodes,$$role);
6401: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6402: $env{'user.name'});
6403: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6404: (undef,my $group_privs) = split(/\//,$trole);
6405: $group_privs = &unescape($group_privs);
6406: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6407: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6408: &get_groups_roles($tdomain,$trest,
6409: \%course_roles,\@rolecodes,
6410: \%groups_roles);
6411: } else {
6412: push(@rolecodes,$$role);
6413: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6414: }
6415: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6416: \%groups_roles);
6417: &appenv(\%userroles,\@rolecodes);
6418: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6419: }
6420: }
6421: $$tstatus = 'is';
6422: }
6423: }
6424: if ($$tend) {
6425: if ($$tend<$update) {
6426: $$tstatus='expired';
6427: } elsif ($$tend<$now) {
6428: $$tstatus='will_not';
6429: }
6430: }
6431: }
6432: }
6433: }
6434:
6435: sub get_groups_roles {
6436: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6437: return unless((ref($cdom_courseroles) eq 'HASH') &&
6438: (ref($rolecodes) eq 'ARRAY') &&
6439: (ref($groups_roles) eq 'HASH'));
6440: if (keys(%{$cdom_courseroles}) > 0) {
6441: my ($cnum) = ($rest =~ /^($match_courseid)/);
6442: if ($cdom ne '' && $cnum ne '') {
6443: foreach my $key (keys(%{$cdom_courseroles})) {
6444: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6445: my $crsrole = $1;
6446: my $crssec = $2;
6447: if ($crsrole =~ /^cr/) {
6448: unless (grep(/^cr$/,@{$rolecodes})) {
6449: push(@{$rolecodes},'cr');
6450: }
6451: } else {
6452: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6453: push(@{$rolecodes},$crsrole);
6454: }
6455: }
6456: my $rolekey = "$crsrole./$cdom/$cnum";
6457: if ($crssec ne '') {
6458: $rolekey .= "/$crssec";
6459: }
6460: $rolekey .= './';
6461: $groups_roles->{$rolekey} = $rolecodes;
6462: }
6463: }
6464: }
6465: }
6466: return;
6467: }
6468:
6469: sub delete_env_groupprivs {
6470: my ($where,$courseroles,$possroles) = @_;
6471: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6472: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6473: unless (ref($courseroles->{$udom}) eq 'HASH') {
6474: %{$courseroles->{$udom}} =
6475: &get_my_roles('','','userroles',['active'],
6476: $possroles,[$udom],1);
6477: }
6478: if (ref($courseroles->{$udom}) eq 'HASH') {
6479: foreach my $item (keys(%{$courseroles->{$udom}})) {
6480: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6481: my $area = '/'.$cdom.'/'.$cnum;
6482: my $privkey = "user.priv.$crsrole.$area";
6483: if ($crssec ne '') {
6484: $privkey .= '/'.$crssec;
6485: }
6486: $privkey .= ".$area/$group";
6487: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6488: }
6489: }
6490: return;
6491: }
6492:
6493: sub check_adhoc_privs {
6494: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6495: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6496: if ($sec) {
6497: $cckey .= '/'.$sec;
6498: }
6499: my $setprivs;
6500: if ($env{$cckey}) {
6501: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6502: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6503: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6504: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6505: $setprivs = 1;
6506: }
6507: } else {
6508: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6509: $setprivs = 1;
6510: }
6511: return $setprivs;
6512: }
6513:
6514: sub set_adhoc_privileges {
6515: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6516: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6517: my $area = '/'.$dcdom.'/'.$pickedcourse;
6518: if ($sec ne '') {
6519: $area .= '/'.$sec;
6520: }
6521: my $spec = $role.'.'.$area;
6522: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6523: $env{'user.name'},1);
6524: my %rolehash = ();
6525: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6526: my $rolename = $1;
6527: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6528: my %domdef = &get_domain_defaults($dcdom);
6529: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6530: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6531: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6532: }
6533: }
6534: } else {
6535: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6536: }
6537: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6538: &appenv(\%userroles,[$role,'cm']);
6539: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6540: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6541: &appenv( {'request.role' => $spec,
6542: 'request.role.domain' => $dcdom,
6543: 'request.course.sec' => $sec,
6544: }
6545: );
6546: my $tadv=0;
6547: if (&allowed('adv') eq 'F') { $tadv=1; }
6548: &appenv({'request.role.adv' => $tadv});
6549: }
6550: }
6551:
6552: # --------------------------------------------------------------- get interface
6553:
6554: sub get {
6555: my ($namespace,$storearr,$udomain,$uname)=@_;
6556: my $items='';
6557: foreach my $item (@$storearr) {
6558: $items.=&escape($item).'&';
6559: }
6560: $items=~s/\&$//;
6561: if (!$udomain) { $udomain=$env{'user.domain'}; }
6562: if (!$uname) { $uname=$env{'user.name'}; }
6563: my $uhome=&homeserver($uname,$udomain);
6564:
6565: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6566: my @pairs=split(/\&/,$rep);
6567: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6568: return @pairs;
6569: }
6570: my %returnhash=();
6571: my $i=0;
6572: foreach my $item (@$storearr) {
6573: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6574: $i++;
6575: }
6576: return %returnhash;
6577: }
6578:
6579: # --------------------------------------------------------------- del interface
6580:
6581: sub del {
6582: my ($namespace,$storearr,$udomain,$uname)=@_;
6583: my $items='';
6584: foreach my $item (@$storearr) {
6585: $items.=&escape($item).'&';
6586: }
6587:
6588: $items=~s/\&$//;
6589: if (!$udomain) { $udomain=$env{'user.domain'}; }
6590: if (!$uname) { $uname=$env{'user.name'}; }
6591: my $uhome=&homeserver($uname,$udomain);
6592: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6593: }
6594:
6595: # -------------------------------------------------------------- dump interface
6596:
6597: sub unserialize {
6598: my ($rep, $escapedkeys) = @_;
6599:
6600: return {} if $rep =~ /^error/;
6601:
6602: my %returnhash=();
6603: foreach my $item (split(/\&/,$rep)) {
6604: my ($key, $value) = split(/=/, $item, 2);
6605: $key = unescape($key) unless $escapedkeys;
6606: next if $key =~ /^error: 2 /;
6607: $returnhash{$key} = &thaw_unescape($value);
6608: }
6609: #return %returnhash;
6610: return \%returnhash;
6611: }
6612:
6613: # see Lond::dump_with_regexp
6614: # if $escapedkeys hash keys won't get unescaped.
6615: sub dump {
6616: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6617: if (!$udomain) { $udomain=$env{'user.domain'}; }
6618: if (!$uname) { $uname=$env{'user.name'}; }
6619: my $uhome=&homeserver($uname,$udomain);
6620:
6621: if ($regexp) {
6622: $regexp=&escape($regexp);
6623: } else {
6624: $regexp='.';
6625: }
6626: if (grep { $_ eq $uhome } current_machine_ids()) {
6627: # user is hosted on this machine
6628: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6629: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6630: return %{unserialize($reply, $escapedkeys)};
6631: }
6632: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6633: my @pairs=split(/\&/,$rep);
6634: my %returnhash=();
6635: if (!($rep =~ /^error/ )) {
6636: foreach my $item (@pairs) {
6637: my ($key,$value)=split(/=/,$item,2);
6638: $key = unescape($key) unless $escapedkeys;
6639: #$key = &unescape($key);
6640: next if ($key =~ /^error: 2 /);
6641: $returnhash{$key}=&thaw_unescape($value);
6642: }
6643: }
6644: return %returnhash;
6645: }
6646:
6647:
6648: # --------------------------------------------------------- dumpstore interface
6649:
6650: sub dumpstore {
6651: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6652: # same as dump but keys must be escaped. They may contain colon separated
6653: # lists of values that may themself contain colons (e.g. symbs).
6654: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6655: }
6656:
6657: # -------------------------------------------------------------- keys interface
6658:
6659: sub getkeys {
6660: my ($namespace,$udomain,$uname)=@_;
6661: if (!$udomain) { $udomain=$env{'user.domain'}; }
6662: if (!$uname) { $uname=$env{'user.name'}; }
6663: my $uhome=&homeserver($uname,$udomain);
6664: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6665: my @keyarray=();
6666: foreach my $key (split(/\&/,$rep)) {
6667: next if ($key =~ /^error: 2 /);
6668: push(@keyarray,&unescape($key));
6669: }
6670: return @keyarray;
6671: }
6672:
6673: # --------------------------------------------------------------- currentdump
6674: sub currentdump {
6675: my ($courseid,$sdom,$sname)=@_;
6676: $courseid = $env{'request.course.id'} if (! defined($courseid));
6677: $sdom = $env{'user.domain'} if (! defined($sdom));
6678: $sname = $env{'user.name'} if (! defined($sname));
6679: my $uhome = &homeserver($sname,$sdom);
6680: my $rep;
6681:
6682: if (grep { $_ eq $uhome } current_machine_ids()) {
6683: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6684: $courseid)));
6685: } else {
6686: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6687: }
6688:
6689: return if ($rep =~ /^(error:|no_such_host)/);
6690: #
6691: my %returnhash=();
6692: #
6693: if ($rep eq 'unknown_cmd') {
6694: # an old lond will not know currentdump
6695: # Do a dump and make it look like a currentdump
6696: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6697: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6698: my %hash = @tmp;
6699: @tmp=();
6700: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6701: } else {
6702: my @pairs=split(/\&/,$rep);
6703: foreach my $pair (@pairs) {
6704: my ($key,$value)=split(/=/,$pair,2);
6705: my ($symb,$param) = split(/:/,$key);
6706: $returnhash{&unescape($symb)}->{&unescape($param)} =
6707: &thaw_unescape($value);
6708: }
6709: }
6710: return %returnhash;
6711: }
6712:
6713: sub convert_dump_to_currentdump{
6714: my %hash = %{shift()};
6715: my %returnhash;
6716: # Code ripped from lond, essentially. The only difference
6717: # here is the unescaping done by lonnet::dump(). Conceivably
6718: # we might run in to problems with parameter names =~ /^v\./
6719: while (my ($key,$value) = each(%hash)) {
6720: my ($v,$symb,$param) = split(/:/,$key);
6721: $symb = &unescape($symb);
6722: $param = &unescape($param);
6723: next if ($v eq 'version' || $symb eq 'keys');
6724: next if (exists($returnhash{$symb}) &&
6725: exists($returnhash{$symb}->{$param}) &&
6726: $returnhash{$symb}->{'v.'.$param} > $v);
6727: $returnhash{$symb}->{$param}=$value;
6728: $returnhash{$symb}->{'v.'.$param}=$v;
6729: }
6730: #
6731: # Remove all of the keys in the hashes which keep track of
6732: # the version of the parameter.
6733: while (my ($symb,$param_hash) = each(%returnhash)) {
6734: # use a foreach because we are going to delete from the hash.
6735: foreach my $key (keys(%$param_hash)) {
6736: delete($param_hash->{$key}) if ($key =~ /^v\./);
6737: }
6738: }
6739: return \%returnhash;
6740: }
6741:
6742: # ------------------------------------------------------ critical inc interface
6743:
6744: sub cinc {
6745: return &inc(@_,'critical');
6746: }
6747:
6748: # --------------------------------------------------------------- inc interface
6749:
6750: sub inc {
6751: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6752: if (!$udomain) { $udomain=$env{'user.domain'}; }
6753: if (!$uname) { $uname=$env{'user.name'}; }
6754: my $uhome=&homeserver($uname,$udomain);
6755: my $items='';
6756: if (! ref($store)) {
6757: # got a single value, so use that instead
6758: $items = &escape($store).'=&';
6759: } elsif (ref($store) eq 'SCALAR') {
6760: $items = &escape($$store).'=&';
6761: } elsif (ref($store) eq 'ARRAY') {
6762: $items = join('=&',map {&escape($_);} @{$store});
6763: } elsif (ref($store) eq 'HASH') {
6764: while (my($key,$value) = each(%{$store})) {
6765: $items.= &escape($key).'='.&escape($value).'&';
6766: }
6767: }
6768: $items=~s/\&$//;
6769: if ($critical) {
6770: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6771: } else {
6772: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6773: }
6774: }
6775:
6776: # --------------------------------------------------------------- put interface
6777:
6778: sub put {
6779: my ($namespace,$storehash,$udomain,$uname)=@_;
6780: if (!$udomain) { $udomain=$env{'user.domain'}; }
6781: if (!$uname) { $uname=$env{'user.name'}; }
6782: my $uhome=&homeserver($uname,$udomain);
6783: my $items='';
6784: foreach my $item (keys(%$storehash)) {
6785: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6786: }
6787: $items=~s/\&$//;
6788: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6789: }
6790:
6791: # ------------------------------------------------------------ newput interface
6792:
6793: sub newput {
6794: my ($namespace,$storehash,$udomain,$uname)=@_;
6795: if (!$udomain) { $udomain=$env{'user.domain'}; }
6796: if (!$uname) { $uname=$env{'user.name'}; }
6797: my $uhome=&homeserver($uname,$udomain);
6798: my $items='';
6799: foreach my $key (keys(%$storehash)) {
6800: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6801: }
6802: $items=~s/\&$//;
6803: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6804: }
6805:
6806: # --------------------------------------------------------- putstore interface
6807:
6808: sub putstore {
6809: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6810: if (!$udomain) { $udomain=$env{'user.domain'}; }
6811: if (!$uname) { $uname=$env{'user.name'}; }
6812: my $uhome=&homeserver($uname,$udomain);
6813: my $items='';
6814: foreach my $key (keys(%$storehash)) {
6815: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6816: }
6817: $items=~s/\&$//;
6818: my $esc_symb=&escape($symb);
6819: my $esc_v=&escape($version);
6820: my $reply =
6821: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6822: $uhome);
6823: if (($tolog) && ($reply eq 'ok')) {
6824: my $namevalue='';
6825: foreach my $key (keys(%{$storehash})) {
6826: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6827: }
6828: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6829: '&host='.&escape($perlvar{'lonHostID'}).
6830: '&version='.$esc_v.
6831: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6832: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6833: }
6834: if ($reply eq 'unknown_cmd') {
6835: # gfall back to way things use to be done
6836: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6837: $uname);
6838: }
6839: return $reply;
6840: }
6841:
6842: sub old_putstore {
6843: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6844: if (!$udomain) { $udomain=$env{'user.domain'}; }
6845: if (!$uname) { $uname=$env{'user.name'}; }
6846: my $uhome=&homeserver($uname,$udomain);
6847: my %newstorehash;
6848: foreach my $item (keys(%$storehash)) {
6849: my $key = $version.':'.&escape($symb).':'.$item;
6850: $newstorehash{$key} = $storehash->{$item};
6851: }
6852: my $items='';
6853: my %allitems = ();
6854: foreach my $item (keys(%newstorehash)) {
6855: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6856: my $key = $1.':keys:'.$2;
6857: $allitems{$key} .= $3.':';
6858: }
6859: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6860: }
6861: foreach my $item (keys(%allitems)) {
6862: $allitems{$item} =~ s/\:$//;
6863: $items.= $item.'='.$allitems{$item}.'&';
6864: }
6865: $items=~s/\&$//;
6866: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6867: }
6868:
6869: # ------------------------------------------------------ critical put interface
6870:
6871: sub cput {
6872: my ($namespace,$storehash,$udomain,$uname)=@_;
6873: if (!$udomain) { $udomain=$env{'user.domain'}; }
6874: if (!$uname) { $uname=$env{'user.name'}; }
6875: my $uhome=&homeserver($uname,$udomain);
6876: my $items='';
6877: foreach my $item (keys(%$storehash)) {
6878: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6879: }
6880: $items=~s/\&$//;
6881: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6882: }
6883:
6884: # -------------------------------------------------------------- eget interface
6885:
6886: sub eget {
6887: my ($namespace,$storearr,$udomain,$uname)=@_;
6888: my $items='';
6889: foreach my $item (@$storearr) {
6890: $items.=&escape($item).'&';
6891: }
6892: $items=~s/\&$//;
6893: if (!$udomain) { $udomain=$env{'user.domain'}; }
6894: if (!$uname) { $uname=$env{'user.name'}; }
6895: my $uhome=&homeserver($uname,$udomain);
6896: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6897: my @pairs=split(/\&/,$rep);
6898: my %returnhash=();
6899: my $i=0;
6900: foreach my $item (@$storearr) {
6901: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6902: $i++;
6903: }
6904: return %returnhash;
6905: }
6906:
6907: # ------------------------------------------------------------ tmpput interface
6908: sub tmpput {
6909: my ($storehash,$server,$context)=@_;
6910: my $items='';
6911: foreach my $item (keys(%$storehash)) {
6912: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6913: }
6914: $items=~s/\&$//;
6915: if (defined($context)) {
6916: $items .= ':'.&escape($context);
6917: }
6918: return &reply("tmpput:$items",$server);
6919: }
6920:
6921: # ------------------------------------------------------------ tmpget interface
6922: sub tmpget {
6923: my ($token,$server)=@_;
6924: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6925: my $rep=&reply("tmpget:$token",$server);
6926: my %returnhash;
6927: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6928: return %returnhash;
6929: }
6930: foreach my $item (split(/\&/,$rep)) {
6931: my ($key,$value)=split(/=/,$item);
6932: $returnhash{&unescape($key)}=&thaw_unescape($value);
6933: }
6934: return %returnhash;
6935: }
6936:
6937: # ------------------------------------------------------------ tmpdel interface
6938: sub tmpdel {
6939: my ($token,$server)=@_;
6940: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6941: return &reply("tmpdel:$token",$server);
6942: }
6943:
6944: # ------------------------------------------------------------ get_timebased_id
6945:
6946: sub get_timebased_id {
6947: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6948: $maxtries) = @_;
6949: my ($newid,$error,$dellock);
6950: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6951: return ('','ok','invalid call to get suffix');
6952: }
6953:
6954: # set defaults for any optional args for which values were not supplied
6955: if ($who eq '') {
6956: $who = $env{'user.name'}.':'.$env{'user.domain'};
6957: }
6958: if (!$locktries) {
6959: $locktries = 3;
6960: }
6961: if (!$maxtries) {
6962: $maxtries = 10;
6963: }
6964:
6965: if (($cdom eq '') || ($cnum eq '')) {
6966: if ($env{'request.course.id'}) {
6967: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6968: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6969: }
6970: if (($cdom eq '') || ($cnum eq '')) {
6971: return ('','ok','call to get suffix not in course context');
6972: }
6973: }
6974:
6975: # construct locking item
6976: my $lockhash = {
6977: $prefix."\0".'locked_'.$keyid => $who,
6978: };
6979: my $tries = 0;
6980:
6981: # attempt to get lock on nohist_$namespace file
6982: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6983: while (($gotlock ne 'ok') && $tries <$locktries) {
6984: $tries ++;
6985: sleep 1;
6986: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6987: }
6988:
6989: # attempt to get unique identifier, based on current timestamp
6990: if ($gotlock eq 'ok') {
6991: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6992: my $id = time;
6993: $newid = $id;
6994: if ($idtype eq 'addcode') {
6995: $newid .= &sixnum_code();
6996: }
6997: my $idtries = 0;
6998: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6999: if ($idtype eq 'concat') {
7000: $newid = $id.$idtries;
7001: } elsif ($idtype eq 'addcode') {
7002: $newid = $newid.&sixnum_code();
7003: } else {
7004: $newid ++;
7005: }
7006: $idtries ++;
7007: }
7008: if (!exists($inuse{$prefix."\0".$newid})) {
7009: my %new_item = (
7010: $prefix."\0".$newid => $who,
7011: );
7012: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7013: $cdom,$cnum);
7014: if ($putresult ne 'ok') {
7015: undef($newid);
7016: $error = 'error saving new item: '.$putresult;
7017: }
7018: } else {
7019: undef($newid);
7020: $error = ('error: no unique suffix available for the new item ');
7021: }
7022: # remove lock
7023: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7024: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7025: } else {
7026: $error = "error: could not obtain lockfile\n";
7027: $dellock = 'ok';
7028: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7029: $dellock = 'nolock';
7030: }
7031: }
7032: return ($newid,$dellock,$error);
7033: }
7034:
7035: sub sixnum_code {
7036: my $code;
7037: for (0..6) {
7038: $code .= int( rand(9) );
7039: }
7040: return $code;
7041: }
7042:
7043: # -------------------------------------------------- portfolio access checking
7044:
7045: sub portfolio_access {
7046: my ($requrl,$clientip) = @_;
7047: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7048: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7049: if ($result) {
7050: my %setters;
7051: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7052: my ($startblock,$endblock) =
7053: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7054: if ($startblock && $endblock) {
7055: return 'B';
7056: }
7057: } else {
7058: my ($startblock,$endblock) =
7059: &Apache::loncommon::blockcheck(\%setters,'port');
7060: if ($startblock && $endblock) {
7061: return 'B';
7062: }
7063: }
7064: }
7065: if ($result eq 'ok') {
7066: return 'F';
7067: } elsif ($result =~ /^[^:]+:guest_/) {
7068: return 'A';
7069: }
7070: return '';
7071: }
7072:
7073: sub get_portfolio_access {
7074: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7075:
7076: if (!ref($access_hash)) {
7077: my $current_perms = &get_portfile_permissions($udom,$unum);
7078: my %access_controls = &get_access_controls($current_perms,$group,
7079: $file_name);
7080: $access_hash = $access_controls{$file_name};
7081: }
7082:
7083: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7084: my $now = time;
7085: if (ref($access_hash) eq 'HASH') {
7086: foreach my $key (keys(%{$access_hash})) {
7087: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7088: if ($start > $now) {
7089: next;
7090: }
7091: if ($end && $end<$now) {
7092: next;
7093: }
7094: if ($scope eq 'public') {
7095: $public = $key;
7096: last;
7097: } elsif ($scope eq 'guest') {
7098: $guest = $key;
7099: } elsif ($scope eq 'domains') {
7100: push(@domains,$key);
7101: } elsif ($scope eq 'users') {
7102: push(@users,$key);
7103: } elsif ($scope eq 'course') {
7104: push(@courses,$key);
7105: } elsif ($scope eq 'group') {
7106: push(@groups,$key);
7107: } elsif ($scope eq 'ip') {
7108: push(@ips,$key);
7109: }
7110: }
7111: if ($public) {
7112: return 'ok';
7113: } elsif (@ips > 0) {
7114: my $allowed;
7115: foreach my $ipkey (@ips) {
7116: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7117: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7118: $allowed = 1;
7119: last;
7120: }
7121: }
7122: }
7123: if ($allowed) {
7124: return 'ok';
7125: }
7126: }
7127: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7128: if ($guest) {
7129: return $guest;
7130: }
7131: } else {
7132: if (@domains > 0) {
7133: foreach my $domkey (@domains) {
7134: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7135: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7136: return 'ok';
7137: }
7138: }
7139: }
7140: }
7141: if (@users > 0) {
7142: foreach my $userkey (@users) {
7143: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7144: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7145: if (ref($item) eq 'HASH') {
7146: if (($item->{'uname'} eq $env{'user.name'}) &&
7147: ($item->{'udom'} eq $env{'user.domain'})) {
7148: return 'ok';
7149: }
7150: }
7151: }
7152: }
7153: }
7154: }
7155: my %roleshash;
7156: my @courses_and_groups = @courses;
7157: push(@courses_and_groups,@groups);
7158: if (@courses_and_groups > 0) {
7159: my (%allgroups,%allroles);
7160: my ($start,$end,$role,$sec,$group);
7161: foreach my $envkey (%env) {
7162: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7163: my $cid = $2.'_'.$3;
7164: if ($1 eq 'gr') {
7165: $group = $4;
7166: $allgroups{$cid}{$group} = $env{$envkey};
7167: } else {
7168: if ($4 eq '') {
7169: $sec = 'none';
7170: } else {
7171: $sec = $4;
7172: }
7173: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7174: }
7175: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7176: my $cid = $2.'_'.$3;
7177: if ($4 eq '') {
7178: $sec = 'none';
7179: } else {
7180: $sec = $4;
7181: }
7182: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7183: }
7184: }
7185: if (keys(%allroles) == 0) {
7186: return;
7187: }
7188: foreach my $key (@courses_and_groups) {
7189: my %content = %{$$access_hash{$key}};
7190: my $cnum = $content{'number'};
7191: my $cdom = $content{'domain'};
7192: my $cid = $cdom.'_'.$cnum;
7193: if (!exists($allroles{$cid})) {
7194: next;
7195: }
7196: foreach my $role_id (keys(%{$content{'roles'}})) {
7197: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7198: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7199: my @status = @{$content{'roles'}{$role_id}{'access'}};
7200: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7201: foreach my $role (keys(%{$allroles{$cid}})) {
7202: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7203: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7204: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7205: if (grep/^all$/,@sections) {
7206: return 'ok';
7207: } else {
7208: if (grep/^$sec$/,@sections) {
7209: return 'ok';
7210: }
7211: }
7212: }
7213: }
7214: if (keys(%{$allgroups{$cid}}) == 0) {
7215: if (grep/^none$/,@groups) {
7216: return 'ok';
7217: }
7218: } else {
7219: if (grep/^all$/,@groups) {
7220: return 'ok';
7221: }
7222: foreach my $group (keys(%{$allgroups{$cid}})) {
7223: if (grep/^$group$/,@groups) {
7224: return 'ok';
7225: }
7226: }
7227: }
7228: }
7229: }
7230: }
7231: }
7232: }
7233: if ($guest) {
7234: return $guest;
7235: }
7236: }
7237: }
7238: return;
7239: }
7240:
7241: sub course_group_datechecker {
7242: my ($dates,$now,$status) = @_;
7243: my ($start,$end) = split(/\./,$dates);
7244: if (!$start && !$end) {
7245: return 'ok';
7246: }
7247: if (grep/^active$/,@{$status}) {
7248: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7249: return 'ok';
7250: }
7251: }
7252: if (grep/^previous$/,@{$status}) {
7253: if ($end > $now ) {
7254: return 'ok';
7255: }
7256: }
7257: if (grep/^future$/,@{$status}) {
7258: if ($start > $now) {
7259: return 'ok';
7260: }
7261: }
7262: return;
7263: }
7264:
7265: sub parse_portfolio_url {
7266: my ($url) = @_;
7267:
7268: my ($type,$udom,$unum,$group,$file_name);
7269:
7270: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7271: $type = 1;
7272: $udom = $1;
7273: $unum = $2;
7274: $file_name = $3;
7275: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7276: $type = 2;
7277: $udom = $1;
7278: $unum = $2;
7279: $group = $3;
7280: $file_name = $3.'/'.$4;
7281: }
7282: if (wantarray) {
7283: return ($type,$udom,$unum,$file_name,$group);
7284: }
7285: return $type;
7286: }
7287:
7288: sub is_portfolio_url {
7289: my ($url) = @_;
7290: return scalar(&parse_portfolio_url($url));
7291: }
7292:
7293: sub is_portfolio_file {
7294: my ($file) = @_;
7295: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7296: return 1;
7297: }
7298: return;
7299: }
7300:
7301: sub usertools_access {
7302: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7303: my ($access,%tools);
7304: if ($context eq '') {
7305: $context = 'tools';
7306: }
7307: if ($context eq 'requestcourses') {
7308: %tools = (
7309: official => 1,
7310: unofficial => 1,
7311: community => 1,
7312: textbook => 1,
7313: placement => 1,
7314: lti => 1,
7315: );
7316: } elsif ($context eq 'requestauthor') {
7317: %tools = (
7318: requestauthor => 1,
7319: );
7320: } else {
7321: %tools = (
7322: aboutme => 1,
7323: blog => 1,
7324: webdav => 1,
7325: portfolio => 1,
7326: );
7327: }
7328: return if (!defined($tools{$tool}));
7329:
7330: if (($udom eq '') || ($uname eq '')) {
7331: $udom = $env{'user.domain'};
7332: $uname = $env{'user.name'};
7333: }
7334:
7335: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7336: if ($action ne 'reload') {
7337: if ($context eq 'requestcourses') {
7338: return $env{'environment.canrequest.'.$tool};
7339: } elsif ($context eq 'requestauthor') {
7340: return $env{'environment.canrequest.author'};
7341: } else {
7342: return $env{'environment.availabletools.'.$tool};
7343: }
7344: }
7345: }
7346:
7347: my ($toolstatus,$inststatus,$envkey);
7348: if ($context eq 'requestauthor') {
7349: $envkey = $context;
7350: } else {
7351: $envkey = $context.'.'.$tool;
7352: }
7353:
7354: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7355: ($action ne 'reload')) {
7356: $toolstatus = $env{'environment.'.$envkey};
7357: $inststatus = $env{'environment.inststatus'};
7358: } else {
7359: if (ref($userenvref) eq 'HASH') {
7360: $toolstatus = $userenvref->{$envkey};
7361: $inststatus = $userenvref->{'inststatus'};
7362: } else {
7363: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7364: $toolstatus = $userenv{$envkey};
7365: $inststatus = $userenv{'inststatus'};
7366: }
7367: }
7368:
7369: if ($toolstatus ne '') {
7370: if ($toolstatus) {
7371: $access = 1;
7372: } else {
7373: $access = 0;
7374: }
7375: return $access;
7376: }
7377:
7378: my ($is_adv,%domdef);
7379: if (ref($is_advref) eq 'HASH') {
7380: $is_adv = $is_advref->{'is_adv'};
7381: } else {
7382: $is_adv = &is_advanced_user($udom,$uname);
7383: }
7384: if (ref($domdefref) eq 'HASH') {
7385: %domdef = %{$domdefref};
7386: } else {
7387: %domdef = &get_domain_defaults($udom);
7388: }
7389: if (ref($domdef{$tool}) eq 'HASH') {
7390: if ($is_adv) {
7391: if ($domdef{$tool}{'_LC_adv'} ne '') {
7392: if ($domdef{$tool}{'_LC_adv'}) {
7393: $access = 1;
7394: } else {
7395: $access = 0;
7396: }
7397: return $access;
7398: }
7399: }
7400: if ($inststatus ne '') {
7401: my ($hasaccess,$hasnoaccess);
7402: foreach my $affiliation (split(/:/,$inststatus)) {
7403: if ($domdef{$tool}{$affiliation} ne '') {
7404: if ($domdef{$tool}{$affiliation}) {
7405: $hasaccess = 1;
7406: } else {
7407: $hasnoaccess = 1;
7408: }
7409: }
7410: }
7411: if ($hasaccess || $hasnoaccess) {
7412: if ($hasaccess) {
7413: $access = 1;
7414: } elsif ($hasnoaccess) {
7415: $access = 0;
7416: }
7417: return $access;
7418: }
7419: } else {
7420: if ($domdef{$tool}{'default'} ne '') {
7421: if ($domdef{$tool}{'default'}) {
7422: $access = 1;
7423: } elsif ($domdef{$tool}{'default'} == 0) {
7424: $access = 0;
7425: }
7426: return $access;
7427: }
7428: }
7429: } else {
7430: if (($context eq 'tools') && ($tool ne 'webdav')) {
7431: $access = 1;
7432: } else {
7433: $access = 0;
7434: }
7435: return $access;
7436: }
7437: }
7438:
7439: sub is_course_owner {
7440: my ($cdom,$cnum,$udom,$uname) = @_;
7441: if (($udom eq '') || ($uname eq '')) {
7442: $udom = $env{'user.domain'};
7443: $uname = $env{'user.name'};
7444: }
7445: unless (($udom eq '') || ($uname eq '')) {
7446: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7447: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7448: return 1;
7449: } else {
7450: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7451: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7452: return 1;
7453: }
7454: }
7455: }
7456: }
7457: return;
7458: }
7459:
7460: sub is_advanced_user {
7461: my ($udom,$uname) = @_;
7462: if ($udom ne '' && $uname ne '') {
7463: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7464: if (wantarray) {
7465: return ($env{'user.adv'},$env{'user.author'});
7466: } else {
7467: return $env{'user.adv'};
7468: }
7469: }
7470: }
7471: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7472: my %allroles;
7473: my ($is_adv,$is_author);
7474: foreach my $role (keys(%roleshash)) {
7475: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7476: my $area = '/'.$tdomain.'/'.$trest;
7477: if ($sec ne '') {
7478: $area .= '/'.$sec;
7479: }
7480: if (($area ne '') && ($trole ne '')) {
7481: my $spec=$trole.'.'.$area;
7482: if ($trole =~ /^cr\//) {
7483: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7484: } elsif ($trole ne 'gr') {
7485: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7486: }
7487: if ($trole eq 'au') {
7488: $is_author = 1;
7489: }
7490: }
7491: }
7492: foreach my $role (keys(%allroles)) {
7493: last if ($is_adv);
7494: foreach my $item (split(/:/,$allroles{$role})) {
7495: if ($item ne '') {
7496: my ($privilege,$restrictions)=split(/&/,$item);
7497: if ($privilege eq 'adv') {
7498: $is_adv = 1;
7499: last;
7500: }
7501: }
7502: }
7503: }
7504: if (wantarray) {
7505: return ($is_adv,$is_author);
7506: }
7507: return $is_adv;
7508: }
7509:
7510: sub check_can_request {
7511: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7512: my $canreq = 0;
7513: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7514: $uname = $env{'user.name'};
7515: $udom = $env{'user.domain'};
7516: }
7517: my ($types,$typename) = &Apache::loncommon::course_types();
7518: my @options = ('approval','validate','autolimit');
7519: my $optregex = join('|',@options);
7520: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7521: foreach my $type (@{$types}) {
7522: if (&usertools_access($uname,$udom,$type,undef,
7523: 'requestcourses')) {
7524: $canreq ++;
7525: if (ref($request_domains) eq 'HASH') {
7526: push(@{$request_domains->{$type}},$udom);
7527: }
7528: if ($dom eq $udom) {
7529: $can_request->{$type} = 1;
7530: }
7531: }
7532: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7533: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7534: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7535: if (@curr > 0) {
7536: foreach my $item (@curr) {
7537: if (ref($request_domains) eq 'HASH') {
7538: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7539: if ($otherdom ne '') {
7540: if (ref($request_domains->{$type}) eq 'ARRAY') {
7541: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7542: push(@{$request_domains->{$type}},$otherdom);
7543: }
7544: } else {
7545: push(@{$request_domains->{$type}},$otherdom);
7546: }
7547: }
7548: }
7549: }
7550: unless ($dom eq $env{'user.domain'}) {
7551: $canreq ++;
7552: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7553: $can_request->{$type} = 1;
7554: }
7555: }
7556: }
7557: }
7558: }
7559: }
7560: return $canreq;
7561: }
7562:
7563: # ---------------------------------------------- Custom access rule evaluation
7564:
7565: sub customaccess {
7566: my ($priv,$uri)=@_;
7567: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7568: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7569: $udom = &LONCAPA::clean_domain($udom);
7570: $ucrs = &LONCAPA::clean_username($ucrs);
7571: my $access=0;
7572: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7573: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7574: if ($type eq 'user') {
7575: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7576: my ($tdom,$tuname)=split(m{/},$scope);
7577: if ($tdom) {
7578: if ($tdom ne $env{'user.domain'}) { next; }
7579: }
7580: if ($tuname) {
7581: if ($tuname ne $env{'user.name'}) { next; }
7582: }
7583: $access=($effect eq 'allow');
7584: last;
7585: }
7586: } else {
7587: if ($role) {
7588: if ($role ne $urole) { next; }
7589: }
7590: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7591: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7592: if ($tdom) {
7593: if ($tdom ne $udom) { next; }
7594: }
7595: if ($tcrs) {
7596: if ($tcrs ne $ucrs) { next; }
7597: }
7598: if ($tsec) {
7599: if ($tsec ne $usec) { next; }
7600: }
7601: $access=($effect eq 'allow');
7602: last;
7603: }
7604: if ($realm eq '' && $role eq '') {
7605: $access=($effect eq 'allow');
7606: }
7607: }
7608: }
7609: return $access;
7610: }
7611:
7612: # ------------------------------------------------- Check for a user privilege
7613:
7614: sub allowed {
7615: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7616: my $ver_orguri=$uri;
7617: $uri=&deversion($uri);
7618: my $orguri=$uri;
7619: $uri=&declutter($uri);
7620:
7621: if ($priv eq 'evb') {
7622: # Evade communication block restrictions for specified role in a course
7623: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7624: return $1;
7625: } else {
7626: return;
7627: }
7628: }
7629:
7630: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7631: # Free bre access to adm and meta resources
7632: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7633: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7634: && ($priv eq 'bre')) {
7635: return 'F';
7636: }
7637:
7638: # Free bre access to user's own portfolio contents
7639: my ($space,$domain,$name,@dir)=split('/',$uri);
7640: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7641: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7642: my %setters;
7643: my ($startblock,$endblock) =
7644: &Apache::loncommon::blockcheck(\%setters,'port');
7645: if ($startblock && $endblock) {
7646: return 'B';
7647: } else {
7648: return 'F';
7649: }
7650: }
7651:
7652: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7653: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7654: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7655: if (exists($env{'request.course.id'})) {
7656: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7657: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7658: if (($domain eq $cdom) && ($name eq $cnum)) {
7659: my $courseprivid=$env{'request.course.id'};
7660: $courseprivid=~s/\_/\//;
7661: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7662: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7663: return $1;
7664: } else {
7665: if ($env{'request.course.sec'}) {
7666: $courseprivid.='/'.$env{'request.course.sec'};
7667: }
7668: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7669: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7670: return $2;
7671: }
7672: }
7673: }
7674: }
7675: }
7676:
7677: # Free bre to public access
7678:
7679: if ($priv eq 'bre') {
7680: my $copyright;
7681: unless ($uri =~ /ext\.tool/) {
7682: $copyright=&metadata($uri,'copyright');
7683: }
7684: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7685: return 'F';
7686: }
7687: if ($copyright eq 'priv') {
7688: $uri=~/([^\/]+)\/([^\/]+)\//;
7689: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7690: return '';
7691: }
7692: }
7693: if ($copyright eq 'domain') {
7694: $uri=~/([^\/]+)\/([^\/]+)\//;
7695: unless (($env{'user.domain'} eq $1) ||
7696: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7697: return '';
7698: }
7699: }
7700: if ($env{'request.role'}=~ /li\.\//) {
7701: # Library role, so allow browsing of resources in this domain.
7702: return 'F';
7703: }
7704: if ($copyright eq 'custom') {
7705: unless (&customaccess($priv,$uri)) { return ''; }
7706: }
7707: }
7708: # Domain coordinator is trying to create a course
7709: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7710: # uri is the requested domain in this case.
7711: # comparison to 'request.role.domain' shows if the user has selected
7712: # a role of dc for the domain in question.
7713: return 'F' if ($uri eq $env{'request.role.domain'});
7714: }
7715:
7716: my $thisallowed='';
7717: my $statecond=0;
7718: my $courseprivid='';
7719:
7720: my $ownaccess;
7721: # Community Coordinator or Assistant Co-author browsing resource space.
7722: if (($priv eq 'bro') && ($env{'user.author'})) {
7723: if ($uri eq '') {
7724: $ownaccess = 1;
7725: } else {
7726: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7727: my $udom = $env{'user.domain'};
7728: my $uname = $env{'user.name'};
7729: if ($uri =~ m{^\Q$udom\E/?$}) {
7730: $ownaccess = 1;
7731: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7732: unless ($uri =~ m{\.\./}) {
7733: $ownaccess = 1;
7734: }
7735: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7736: my $now = time;
7737: if ($uri =~ m{^([^/]+)/?$}) {
7738: my $adom = $1;
7739: foreach my $key (keys(%env)) {
7740: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7741: my ($start,$end) = split('.',$env{$key});
7742: if (($now >= $start) && (!$end || $end < $now)) {
7743: $ownaccess = 1;
7744: last;
7745: }
7746: }
7747: }
7748: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7749: my $adom = $1;
7750: my $aname = $2;
7751: foreach my $role ('ca','aa') {
7752: if ($env{"user.role.$role./$adom/$aname"}) {
7753: my ($start,$end) =
7754: split('.',$env{"user.role.$role./$adom/$aname"});
7755: if (($now >= $start) && (!$end || $end < $now)) {
7756: $ownaccess = 1;
7757: last;
7758: }
7759: }
7760: }
7761: }
7762: }
7763: }
7764: }
7765: }
7766:
7767: # Course
7768:
7769: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7770: unless (($priv eq 'bro') && (!$ownaccess)) {
7771: $thisallowed.=$1;
7772: }
7773: }
7774:
7775: # Domain
7776:
7777: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7778: =~/\Q$priv\E\&([^\:]*)/) {
7779: unless (($priv eq 'bro') && (!$ownaccess)) {
7780: $thisallowed.=$1;
7781: }
7782: }
7783:
7784: # User who is not author or co-author might still be able to edit
7785: # resource of an author in the domain (e.g., if Domain Coordinator).
7786: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7787: (&allowed('mdc',$env{'request.course.id'}))) {
7788: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7789: $thisallowed.=$1;
7790: }
7791: }
7792:
7793: # Course: uri itself is a course
7794: my $courseuri=$uri;
7795: $courseuri=~s/\_(\d)/\/$1/;
7796: $courseuri=~s/^([^\/])/\/$1/;
7797:
7798: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7799: =~/\Q$priv\E\&([^\:]*)/) {
7800: unless (($priv eq 'bro') && (!$ownaccess)) {
7801: $thisallowed.=$1;
7802: }
7803: }
7804:
7805: # URI is an uploaded document for this course, default permissions don't matter
7806: # not allowing 'edit' access (editupload) to uploaded course docs
7807: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7808: $thisallowed='';
7809: my ($match)=&is_on_map($uri);
7810: if ($match) {
7811: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7812: =~/\Q$priv\E\&([^\:]*)/) {
7813: my $value = $1;
7814: if ($noblockcheck) {
7815: $thisallowed.=$value;
7816: } else {
7817: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7818: if (@blockers > 0) {
7819: $thisallowed = 'B';
7820: } else {
7821: $thisallowed.=$value;
7822: }
7823: }
7824: }
7825: } else {
7826: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7827: if ($refuri) {
7828: if ($refuri =~ m|^/adm/|) {
7829: $thisallowed='F';
7830: } else {
7831: $refuri=&declutter($refuri);
7832: my ($match) = &is_on_map($refuri);
7833: if ($match) {
7834: if ($noblockcheck) {
7835: $thisallowed='F';
7836: } else {
7837: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7838: if (@blockers > 0) {
7839: $thisallowed = 'B';
7840: } else {
7841: $thisallowed='F';
7842: }
7843: }
7844: }
7845: }
7846: }
7847: }
7848: }
7849:
7850: if ($priv eq 'bre'
7851: && $thisallowed ne 'F'
7852: && $thisallowed ne '2'
7853: && &is_portfolio_url($uri)) {
7854: $thisallowed = &portfolio_access($uri,$clientip);
7855: }
7856:
7857: # Full access at system, domain or course-wide level? Exit.
7858: if ($thisallowed=~/F/) {
7859: return 'F';
7860: }
7861:
7862: # If this is generating or modifying users, exit with special codes
7863:
7864: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7865: if (($priv eq 'cca') || ($priv eq 'caa')) {
7866: my ($audom,$auname)=split('/',$uri);
7867: # no author name given, so this just checks on the general right to make a co-author in this domain
7868: unless ($auname) { return $thisallowed; }
7869: # an author name is given, so we are about to actually make a co-author for a certain account
7870: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7871: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7872: ($audom ne $env{'request.role.domain'}))) { return ''; }
7873: }
7874: return $thisallowed;
7875: }
7876: #
7877: # Gathered so far: system, domain and course wide privileges
7878: #
7879: # Course: See if uri or referer is an individual resource that is part of
7880: # the course
7881:
7882: if ($env{'request.course.id'}) {
7883:
7884: $courseprivid=$env{'request.course.id'};
7885: if ($env{'request.course.sec'}) {
7886: $courseprivid.='/'.$env{'request.course.sec'};
7887: }
7888: $courseprivid=~s/\_/\//;
7889: my $checkreferer=1;
7890: my ($match,$cond)=&is_on_map($uri);
7891: if ($match) {
7892: $statecond=$cond;
7893: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7894: =~/\Q$priv\E\&([^\:]*)/) {
7895: my $value = $1;
7896: if ($priv eq 'bre') {
7897: if ($noblockcheck) {
7898: $thisallowed.=$value;
7899: } else {
7900: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7901: if (@blockers > 0) {
7902: $thisallowed = 'B';
7903: } else {
7904: $thisallowed.=$value;
7905: }
7906: }
7907: } else {
7908: $thisallowed.=$value;
7909: }
7910: $checkreferer=0;
7911: }
7912: }
7913:
7914: if ($checkreferer) {
7915: my $refuri=$env{'httpref.'.$orguri};
7916: unless ($refuri) {
7917: foreach my $key (keys(%env)) {
7918: if ($key=~/^httpref\..*\*/) {
7919: my $pattern=$key;
7920: $pattern=~s/^httpref\.\/res\///;
7921: $pattern=~s/\*/\[\^\/\]\+/g;
7922: $pattern=~s/\//\\\//g;
7923: if ($orguri=~/$pattern/) {
7924: $refuri=$env{$key};
7925: }
7926: }
7927: }
7928: }
7929:
7930: if ($refuri) {
7931: $refuri=&declutter($refuri);
7932: my ($match,$cond)=&is_on_map($refuri);
7933: if ($match) {
7934: my $refstatecond=$cond;
7935: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7936: =~/\Q$priv\E\&([^\:]*)/) {
7937: my $value = $1;
7938: if ($priv eq 'bre') {
7939: if ($noblockcheck) {
7940: $thisallowed.=$value;
7941: } else {
7942: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7943: if (@blockers > 0) {
7944: $thisallowed = 'B';
7945: } else {
7946: $thisallowed.=$value;
7947: }
7948: }
7949: } else {
7950: $thisallowed.=$value;
7951: }
7952: $uri=$refuri;
7953: $statecond=$refstatecond;
7954: }
7955: }
7956: }
7957: }
7958: }
7959:
7960: #
7961: # Gathered now: all privileges that could apply, and condition number
7962: #
7963: #
7964: # Full or no access?
7965: #
7966:
7967: if ($thisallowed=~/F/) {
7968: return 'F';
7969: }
7970:
7971: unless ($thisallowed) {
7972: return '';
7973: }
7974:
7975: # Restrictions exist, deal with them
7976: #
7977: # C:according to course preferences
7978: # R:according to resource settings
7979: # L:unless locked
7980: # X:according to user session state
7981: #
7982:
7983: # Possibly locked functionality, check all courses
7984: # Locks might take effect only after 10 minutes cache expiration for other
7985: # courses, and 2 minutes for current course
7986:
7987: my $envkey;
7988: if ($thisallowed=~/L/) {
7989: foreach $envkey (keys(%env)) {
7990: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7991: my $courseid=$2;
7992: my $roleid=$1.'.'.$2;
7993: $courseid=~s/^\///;
7994: my $expiretime=600;
7995: if ($env{'request.role'} eq $roleid) {
7996: $expiretime=120;
7997: }
7998: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7999: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8000: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8001: &coursedescription($courseid,{'freshen_cache' => 1});
8002: }
8003: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8004: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8005: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8006: &log($env{'user.domain'},$env{'user.name'},
8007: $env{'user.home'},
8008: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8009: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8010: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8011: return '';
8012: }
8013: }
8014: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8015: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8016: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8017: &log($env{'user.domain'},$env{'user.name'},
8018: $env{'user.home'},
8019: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8020: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8021: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8022: return '';
8023: }
8024: }
8025: }
8026: }
8027: }
8028:
8029: #
8030: # Rest of the restrictions depend on selected course
8031: #
8032:
8033: unless ($env{'request.course.id'}) {
8034: if ($thisallowed eq 'A') {
8035: return 'A';
8036: } elsif ($thisallowed eq 'B') {
8037: return 'B';
8038: } else {
8039: return '1';
8040: }
8041: }
8042:
8043: #
8044: # Now user is definitely in a course
8045: #
8046:
8047:
8048: # Course preferences
8049:
8050: if ($thisallowed=~/C/) {
8051: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8052: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8053: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8054: =~/\Q$rolecode\E/) {
8055: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8056: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8057: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8058: $env{'request.course.id'});
8059: }
8060: return '';
8061: }
8062:
8063: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8064: =~/\Q$unamedom\E/) {
8065: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8066: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8067: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8068: $env{'request.course.id'});
8069: }
8070: return '';
8071: }
8072: }
8073:
8074: # Resource preferences
8075:
8076: if ($thisallowed=~/R/) {
8077: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8078: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8079: if (($priv ne 'pch') && ($priv ne 'plc')) {
8080: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8081: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8082: }
8083: return '';
8084: }
8085: }
8086:
8087: # Restricted by state or randomout?
8088:
8089: if ($thisallowed=~/X/) {
8090: if ($env{'acc.randomout'}) {
8091: if (!$symb) { $symb=&symbread($uri,1); }
8092: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8093: return '';
8094: }
8095: }
8096: if (&condval($statecond)) {
8097: return '2';
8098: } else {
8099: return '';
8100: }
8101: }
8102:
8103: if ($thisallowed eq 'A') {
8104: return 'A';
8105: } elsif ($thisallowed eq 'B') {
8106: return 'B';
8107: }
8108: return 'F';
8109: }
8110:
8111: # ------------------------------------------- Check construction space access
8112:
8113: sub constructaccess {
8114: my ($url,$setpriv)=@_;
8115:
8116: # We do not allow editing of previous versions of files
8117: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8118:
8119: # Get username and domain from URL
8120: my ($ownername,$ownerdomain,$ownerhome);
8121:
8122: ($ownerdomain,$ownername) =
8123: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8124:
8125: # The URL does not really point to any authorspace, forget it
8126: unless (($ownername) && ($ownerdomain)) { return ''; }
8127:
8128: # Now we need to see if the user has access to the authorspace of
8129: # $ownername at $ownerdomain
8130:
8131: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8132: # Real author for this?
8133: $ownerhome = $env{'user.home'};
8134: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8135: return ($ownername,$ownerdomain,$ownerhome);
8136: }
8137: } else {
8138: # Co-author for this?
8139: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8140: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8141: $ownerhome = &homeserver($ownername,$ownerdomain);
8142: return ($ownername,$ownerdomain,$ownerhome);
8143: }
8144: if ($env{'request.course.id'}) {
8145: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8146: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8147: if (&allowed('mdc',$env{'request.course.id'})) {
8148: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8149: return ($ownername,$ownerdomain,$ownerhome);
8150: }
8151: }
8152: }
8153: }
8154:
8155: # We don't have any access right now. If we are not possibly going to do anything about this,
8156: # we might as well leave
8157: unless ($setpriv) { return ''; }
8158:
8159: # Backdoor access?
8160: my $allowed=&allowed('eco',$ownerdomain);
8161: # Nope
8162: unless ($allowed) { return ''; }
8163: # Looks like we may have access, but could be locked by the owner of the construction space
8164: if ($allowed eq 'U') {
8165: my %blocked=&get('environment',['domcoord.author'],
8166: $ownerdomain,$ownername);
8167: # Is blocked by owner
8168: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8169: }
8170: if (($allowed eq 'F') || ($allowed eq 'U')) {
8171: # Grant temporary access
8172: my $then=$env{'user.login.time'};
8173: my $update=$env{'user.update.time'};
8174: if (!$update) { $update = $then; }
8175: my $refresh=$env{'user.refresh.time'};
8176: if (!$refresh) { $refresh = $update; }
8177: my $now = time;
8178: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8179: $now,'ca','constructaccess');
8180: $ownerhome = &homeserver($ownername,$ownerdomain);
8181: return($ownername,$ownerdomain,$ownerhome);
8182: }
8183: # No business here
8184: return '';
8185: }
8186:
8187: # ----------------------------------------------------------- Content Blocking
8188:
8189: {
8190: # Caches for faster Course Contents display where content blocking
8191: # is in operation (i.e., interval param set) for timed quiz.
8192: #
8193: # User for whom data are being temporarily cached.
8194: my $cacheduser='';
8195: # Cached blockers for this user (a hash of blocking items).
8196: my %cachedblockers=();
8197: # When the data were last cached.
8198: my $cachedlast='';
8199:
8200: sub load_all_blockers {
8201: my ($uname,$udom,$blocks)=@_;
8202: if (($uname ne '') && ($udom ne '')) {
8203: if (($cacheduser eq $uname.':'.$udom) &&
8204: (abs($cachedlast-time)<5)) {
8205: return;
8206: }
8207: }
8208: $cachedlast=time;
8209: $cacheduser=$uname.':'.$udom;
8210: %cachedblockers = &get_commblock_resources($blocks);
8211: }
8212:
8213: sub get_comm_blocks {
8214: my ($cdom,$cnum) = @_;
8215: if ($cdom eq '' || $cnum eq '') {
8216: return unless ($env{'request.course.id'});
8217: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8218: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8219: }
8220: my %commblocks;
8221: my $hashid=$cdom.'_'.$cnum;
8222: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8223: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8224: %commblocks = %{$blocksref};
8225: } else {
8226: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8227: my $cachetime = 600;
8228: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8229: }
8230: return %commblocks;
8231: }
8232:
8233: sub get_commblock_resources {
8234: my ($blocks) = @_;
8235: my %blockers = ();
8236: return %blockers unless ($env{'request.course.id'});
8237: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8238: my %commblocks;
8239: if (ref($blocks) eq 'HASH') {
8240: %commblocks = %{$blocks};
8241: } else {
8242: %commblocks = &get_comm_blocks();
8243: }
8244: return %blockers unless (keys(%commblocks) > 0);
8245: my $navmap = Apache::lonnavmaps::navmap->new();
8246: return %blockers unless (ref($navmap));
8247: my $now = time;
8248: foreach my $block (keys(%commblocks)) {
8249: if ($block =~ /^(\d+)____(\d+)$/) {
8250: my ($start,$end) = ($1,$2);
8251: if ($start <= $now && $end >= $now) {
8252: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8253: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8254: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8255: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8256: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8257: }
8258: }
8259: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8260: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8261: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8262: }
8263: }
8264: }
8265: }
8266: }
8267: } elsif ($block =~ /^firstaccess____(.+)$/) {
8268: my $item = $1;
8269: my @to_test;
8270: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8271: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8272: my @interval;
8273: my $type = 'map';
8274: if ($item eq 'course') {
8275: $type = 'course';
8276: @interval=&EXT("resource.0.interval");
8277: } else {
8278: if ($item =~ /___\d+___/) {
8279: $type = 'resource';
8280: @interval=&EXT("resource.0.interval",$item);
8281: if (ref($navmap)) {
8282: my $res = $navmap->getBySymb($item);
8283: push(@to_test,$res);
8284: }
8285: } else {
8286: my $mapsymb = &symbread($item,1);
8287: if ($mapsymb) {
8288: if (ref($navmap)) {
8289: my $mapres = $navmap->getBySymb($mapsymb);
8290: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8291: foreach my $res (@to_test) {
8292: my $symb = $res->symb();
8293: next if ($symb eq $mapsymb);
8294: if ($symb ne '') {
8295: @interval=&EXT("resource.0.interval",$symb);
8296: if ($interval[1] eq 'map') {
8297: last;
8298: }
8299: }
8300: }
8301: }
8302: }
8303: }
8304: }
8305: if ($interval[0] =~ /^(\d+)/) {
8306: my $timelimit = $1;
8307: my $first_access;
8308: if ($type eq 'resource') {
8309: $first_access=&get_first_access($interval[1],$item);
8310: } elsif ($type eq 'map') {
8311: $first_access=&get_first_access($interval[1],undef,$item);
8312: } else {
8313: $first_access=&get_first_access($interval[1]);
8314: }
8315: if ($first_access) {
8316: my $timesup = $first_access+$timelimit;
8317: if ($timesup > $now) {
8318: my $activeblock;
8319: foreach my $res (@to_test) {
8320: if ($res->answerable()) {
8321: $activeblock = 1;
8322: last;
8323: }
8324: }
8325: if ($activeblock) {
8326: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8327: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8328: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8329: }
8330: }
8331: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8332: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8333: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8334: }
8335: }
8336: }
8337: }
8338: }
8339: }
8340: }
8341: }
8342: }
8343: }
8344: return %blockers;
8345: }
8346:
8347: sub has_comm_blocking {
8348: my ($priv,$symb,$uri,$blocks) = @_;
8349: my @blockers;
8350: return unless ($env{'request.course.id'});
8351: return unless ($priv eq 'bre');
8352: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8353: return if ($env{'request.state'} eq 'construct');
8354: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8355: return unless (keys(%cachedblockers) > 0);
8356: my (%possibles,@symbs);
8357: if (!$symb) {
8358: $symb = &symbread($uri,1,1,1,\%possibles);
8359: }
8360: if ($symb) {
8361: @symbs = ($symb);
8362: } elsif (keys(%possibles)) {
8363: @symbs = keys(%possibles);
8364: }
8365: my $noblock;
8366: foreach my $symb (@symbs) {
8367: last if ($noblock);
8368: my ($map,$resid,$resurl)=&decode_symb($symb);
8369: foreach my $block (keys(%cachedblockers)) {
8370: if ($block =~ /^firstaccess____(.+)$/) {
8371: my $item = $1;
8372: if (($item eq $map) || ($item eq $symb)) {
8373: $noblock = 1;
8374: last;
8375: }
8376: }
8377: if (ref($cachedblockers{$block}) eq 'HASH') {
8378: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8379: if ($cachedblockers{$block}{'resources'}{$symb}) {
8380: unless (grep(/^\Q$block\E$/,@blockers)) {
8381: push(@blockers,$block);
8382: }
8383: }
8384: }
8385: }
8386: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8387: if ($cachedblockers{$block}{'maps'}{$map}) {
8388: unless (grep(/^\Q$block\E$/,@blockers)) {
8389: push(@blockers,$block);
8390: }
8391: }
8392: }
8393: }
8394: }
8395: return if ($noblock);
8396: return @blockers;
8397: }
8398: }
8399:
8400: # -------------------------------- Deversion and split uri into path an filename
8401:
8402: #
8403: # Removes the version from a URI and
8404: # splits it in to its filename and path to the filename.
8405: # Seems like File::Basename could have done this more clearly.
8406: # Parameters:
8407: # $uri - input URI
8408: # Returns:
8409: # Two element list consisting of
8410: # $pathname - the URI up to and excluding the trailing /
8411: # $filename - The part of the URI following the last /
8412: # NOTE:
8413: # Another realization of this is simply:
8414: # use File::Basename;
8415: # ...
8416: # $uri = shift;
8417: # $filename = basename($uri);
8418: # $path = dirname($uri);
8419: # return ($filename, $path);
8420: #
8421: # The implementation below is probably faster however.
8422: #
8423: sub split_uri_for_cond {
8424: my $uri=&deversion(&declutter(shift));
8425: my @uriparts=split(/\//,$uri);
8426: my $filename=pop(@uriparts);
8427: my $pathname=join('/',@uriparts);
8428: return ($pathname,$filename);
8429: }
8430: # --------------------------------------------------- Is a resource on the map?
8431:
8432: sub is_on_map {
8433: my ($pathname,$filename) = &split_uri_for_cond(shift);
8434: #Trying to find the conditional for the file
8435: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8436: /\&\Q$filename\E\:([\d\|]+)\&/);
8437: if ($match) {
8438: return (1,$1);
8439: } else {
8440: return (0,0);
8441: }
8442: }
8443:
8444: # --------------------------------------------------------- Get symb from alias
8445:
8446: sub get_symb_from_alias {
8447: my $symb=shift;
8448: my ($map,$resid,$url)=&decode_symb($symb);
8449: # Already is a symb
8450: if ($url) { return $symb; }
8451: # Must be an alias
8452: my $aliassymb='';
8453: my %bighash;
8454: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8455: &GDBM_READER(),0640)) {
8456: my $rid=$bighash{'mapalias_'.$symb};
8457: if ($rid) {
8458: my ($mapid,$resid)=split(/\./,$rid);
8459: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8460: $resid,$bighash{'src_'.$rid});
8461: }
8462: untie %bighash;
8463: }
8464: return $aliassymb;
8465: }
8466:
8467: # ----------------------------------------------------------------- Define Role
8468:
8469: sub definerole {
8470: if (allowed('mcr','/')) {
8471: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8472: foreach my $role (split(':',$sysrole)) {
8473: my ($crole,$cqual)=split(/\&/,$role);
8474: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8475: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8476: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8477: return "refused:s:$crole&$cqual";
8478: }
8479: }
8480: }
8481: foreach my $role (split(':',$domrole)) {
8482: my ($crole,$cqual)=split(/\&/,$role);
8483: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8484: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8485: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8486: return "refused:d:$crole&$cqual";
8487: }
8488: }
8489: }
8490: foreach my $role (split(':',$courole)) {
8491: my ($crole,$cqual)=split(/\&/,$role);
8492: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8493: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8494: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8495: return "refused:c:$crole&$cqual";
8496: }
8497: }
8498: }
8499: my $uhome;
8500: if (($uname ne '') && ($udom ne '')) {
8501: $uhome = &homeserver($uname,$udom);
8502: return $uhome if ($uhome eq 'no_host');
8503: } else {
8504: $uname = $env{'user.name'};
8505: $udom = $env{'user.domain'};
8506: $uhome = $env{'user.home'};
8507: }
8508: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8509: "$udom:$uname:rolesdef_$rolename=".
8510: escape($sysrole.'_'.$domrole.'_'.$courole);
8511: return reply($command,$uhome);
8512: } else {
8513: return 'refused';
8514: }
8515: }
8516:
8517: # ---------------- Make a metadata query against the network of library servers
8518:
8519: sub metadata_query {
8520: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8521: my %rhash;
8522: my %libserv = &all_library();
8523: my @server_list = (defined($server_array) ? @$server_array
8524: : keys(%libserv) );
8525: for my $server (@server_list) {
8526: my $domains = '';
8527: if (ref($domains_hash) eq 'HASH') {
8528: $domains = $domains_hash->{$server};
8529: }
8530: unless ($custom or $customshow) {
8531: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8532: $rhash{$server}=$reply;
8533: }
8534: else {
8535: my $reply=&reply("querysend:".&escape($query).':'.
8536: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8537: $server);
8538: $rhash{$server}=$reply;
8539: }
8540: }
8541: return \%rhash;
8542: }
8543:
8544: # ----------------------------------------- Send log queries and wait for reply
8545:
8546: sub log_query {
8547: my ($uname,$udom,$query,%filters)=@_;
8548: my $uhome=&homeserver($uname,$udom);
8549: if ($uhome eq 'no_host') { return 'error: no_host'; }
8550: my $uhost=&hostname($uhome);
8551: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8552: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8553: $uhome);
8554: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8555: return get_query_reply($queryid);
8556: }
8557:
8558: # -------------------------- Update MySQL table for portfolio file
8559:
8560: sub update_portfolio_table {
8561: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8562: if ($group ne '') {
8563: $file_name =~s /^\Q$group\E//;
8564: }
8565: my $homeserver = &homeserver($uname,$udom);
8566: my $queryid=
8567: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8568: ':'.&escape($file_name).':'.$action,$homeserver);
8569: my $reply = &get_query_reply($queryid);
8570: return $reply;
8571: }
8572:
8573: # -------------------------- Update MySQL allusers table
8574:
8575: sub update_allusers_table {
8576: my ($uname,$udom,$names) = @_;
8577: my $homeserver = &homeserver($uname,$udom);
8578: my $queryid=
8579: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8580: 'lastname='.&escape($names->{'lastname'}).'%%'.
8581: 'firstname='.&escape($names->{'firstname'}).'%%'.
8582: 'middlename='.&escape($names->{'middlename'}).'%%'.
8583: 'generation='.&escape($names->{'generation'}).'%%'.
8584: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8585: 'id='.&escape($names->{'id'}),$homeserver);
8586: return;
8587: }
8588:
8589: # ------- Request retrieval of institutional classlists for course(s)
8590:
8591: sub fetch_enrollment_query {
8592: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8593: my ($homeserver,$sleep,$loopmax);
8594: my $maxtries = 1;
8595: if ($context eq 'automated') {
8596: $homeserver = $perlvar{'lonHostID'};
8597: $sleep = 2;
8598: $loopmax = 100;
8599: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8600: } else {
8601: $homeserver = &homeserver($cnum,$dom);
8602: }
8603: my $host=&hostname($homeserver);
8604: my $cmd = '';
8605: foreach my $affiliate (keys(%{$affiliatesref})) {
8606: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8607: }
8608: $cmd =~ s/%%$//;
8609: $cmd = &escape($cmd);
8610: my $query = 'fetchenrollment';
8611: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8612: unless ($queryid=~/^\Q$host\E\_/) {
8613: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8614: return 'error: '.$queryid;
8615: }
8616: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8617: my $tries = 1;
8618: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8619: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8620: $tries ++;
8621: }
8622: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8623: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8624: } else {
8625: my @responses = split(/:/,$reply);
8626: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8627: foreach my $line (@responses) {
8628: my ($key,$value) = split(/=/,$line,2);
8629: $$replyref{$key} = $value;
8630: }
8631: } else {
8632: my $pathname = LONCAPA::tempdir();
8633: foreach my $line (@responses) {
8634: my ($key,$value) = split(/=/,$line);
8635: $$replyref{$key} = $value;
8636: if ($value > 0) {
8637: foreach my $item (@{$$affiliatesref{$key}}) {
8638: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8639: my $destname = $pathname.'/'.$filename;
8640: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8641: if ($xml_classlist =~ /^error/) {
8642: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8643: } else {
8644: if ( open(FILE,">",$destname) ) {
8645: print FILE &unescape($xml_classlist);
8646: close(FILE);
8647: } else {
8648: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8649: }
8650: }
8651: }
8652: }
8653: }
8654: }
8655: return 'ok';
8656: }
8657: return 'error';
8658: }
8659:
8660: sub get_query_reply {
8661: my ($queryid,$sleep,$loopmax) = @_;;
8662: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8663: $sleep = 0.2;
8664: }
8665: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8666: $loopmax = 100;
8667: }
8668: my $replyfile=LONCAPA::tempdir().$queryid;
8669: my $reply='';
8670: for (1..$loopmax) {
8671: sleep($sleep);
8672: if (-e $replyfile.'.end') {
8673: if (open(my $fh,"<",$replyfile)) {
8674: $reply = join('',<$fh>);
8675: close($fh);
8676: } else { return 'error: reply_file_error'; }
8677: return &unescape($reply);
8678: }
8679: }
8680: return 'timeout:'.$queryid;
8681: }
8682:
8683: sub courselog_query {
8684: #
8685: # possible filters:
8686: # url: url or symb
8687: # username
8688: # domain
8689: # action: view, submit, grade
8690: # start: timestamp
8691: # end: timestamp
8692: #
8693: my (%filters)=@_;
8694: unless ($env{'request.course.id'}) { return 'no_course'; }
8695: if ($filters{'url'}) {
8696: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8697: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8698: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8699: }
8700: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8701: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8702: return &log_query($cname,$cdom,'courselog',%filters);
8703: }
8704:
8705: sub userlog_query {
8706: #
8707: # possible filters:
8708: # action: log check role
8709: # start: timestamp
8710: # end: timestamp
8711: #
8712: my ($uname,$udom,%filters)=@_;
8713: return &log_query($uname,$udom,'userlog',%filters);
8714: }
8715:
8716: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8717:
8718: sub auto_run {
8719: my ($cnum,$cdom) = @_;
8720: my $response = 0;
8721: my $settings;
8722: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8723: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8724: $settings = $domconfig{'autoenroll'};
8725: if ($settings->{'run'} eq '1') {
8726: $response = 1;
8727: }
8728: } else {
8729: my $homeserver;
8730: if (&is_course($cdom,$cnum)) {
8731: $homeserver = &homeserver($cnum,$cdom);
8732: } else {
8733: $homeserver = &domain($cdom,'primary');
8734: }
8735: if ($homeserver ne 'no_host') {
8736: $response = &reply('autorun:'.$cdom,$homeserver);
8737: }
8738: }
8739: return $response;
8740: }
8741:
8742: sub auto_get_sections {
8743: my ($cnum,$cdom,$inst_coursecode) = @_;
8744: my $homeserver;
8745: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8746: $homeserver = &homeserver($cnum,$cdom);
8747: }
8748: if (!defined($homeserver)) {
8749: if ($cdom =~ /^$match_domain$/) {
8750: $homeserver = &domain($cdom,'primary');
8751: }
8752: }
8753: my @secs;
8754: if (defined($homeserver)) {
8755: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8756: unless ($response eq 'refused') {
8757: @secs = split(/:/,$response);
8758: }
8759: }
8760: return @secs;
8761: }
8762:
8763: sub auto_new_course {
8764: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8765: my $homeserver = &homeserver($cnum,$cdom);
8766: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8767: return $response;
8768: }
8769:
8770: sub auto_validate_courseID {
8771: my ($cnum,$cdom,$inst_course_id) = @_;
8772: my $homeserver = &homeserver($cnum,$cdom);
8773: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8774: return $response;
8775: }
8776:
8777: sub auto_validate_instcode {
8778: my ($cnum,$cdom,$instcode,$owner) = @_;
8779: my ($homeserver,$response);
8780: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8781: $homeserver = &homeserver($cnum,$cdom);
8782: }
8783: if (!defined($homeserver)) {
8784: if ($cdom =~ /^$match_domain$/) {
8785: $homeserver = &domain($cdom,'primary');
8786: }
8787: }
8788: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8789: &escape($instcode).':'.&escape($owner),$homeserver));
8790: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8791: return ($outcome,$description,$defaultcredits);
8792: }
8793:
8794: sub auto_create_password {
8795: my ($cnum,$cdom,$authparam,$udom) = @_;
8796: my ($homeserver,$response);
8797: my $create_passwd = 0;
8798: my $authchk = '';
8799: if ($udom =~ /^$match_domain$/) {
8800: $homeserver = &domain($udom,'primary');
8801: }
8802: if ($homeserver eq '') {
8803: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8804: $homeserver = &homeserver($cnum,$cdom);
8805: }
8806: }
8807: if ($homeserver eq '') {
8808: $authchk = 'nodomain';
8809: } else {
8810: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8811: if ($response eq 'refused') {
8812: $authchk = 'refused';
8813: } else {
8814: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8815: }
8816: }
8817: return ($authparam,$create_passwd,$authchk);
8818: }
8819:
8820: sub auto_photo_permission {
8821: my ($cnum,$cdom,$students) = @_;
8822: my $homeserver = &homeserver($cnum,$cdom);
8823: my ($outcome,$perm_reqd,$conditions) =
8824: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8825: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8826: return (undef,undef);
8827: }
8828: return ($outcome,$perm_reqd,$conditions);
8829: }
8830:
8831: sub auto_checkphotos {
8832: my ($uname,$udom,$pid) = @_;
8833: my $homeserver = &homeserver($uname,$udom);
8834: my ($result,$resulttype);
8835: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8836: &escape($uname).':'.&escape($pid),
8837: $homeserver));
8838: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8839: return (undef,undef);
8840: }
8841: if ($outcome) {
8842: ($result,$resulttype) = split(/:/,$outcome);
8843: }
8844: return ($result,$resulttype);
8845: }
8846:
8847: sub auto_photochoice {
8848: my ($cnum,$cdom) = @_;
8849: my $homeserver = &homeserver($cnum,$cdom);
8850: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8851: &escape($cdom),
8852: $homeserver)));
8853: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8854: return (undef,undef);
8855: }
8856: return ($update,$comment);
8857: }
8858:
8859: sub auto_photoupdate {
8860: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8861: my $homeserver = &homeserver($cnum,$dom);
8862: my $host=&hostname($homeserver);
8863: my $cmd = '';
8864: my $maxtries = 1;
8865: foreach my $affiliate (keys(%{$affiliatesref})) {
8866: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8867: }
8868: $cmd =~ s/%%$//;
8869: $cmd = &escape($cmd);
8870: my $query = 'institutionalphotos';
8871: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8872: unless ($queryid=~/^\Q$host\E\_/) {
8873: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8874: return 'error: '.$queryid;
8875: }
8876: my $reply = &get_query_reply($queryid);
8877: my $tries = 1;
8878: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8879: $reply = &get_query_reply($queryid);
8880: $tries ++;
8881: }
8882: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8883: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8884: } else {
8885: my @responses = split(/:/,$reply);
8886: my $outcome = shift(@responses);
8887: foreach my $item (@responses) {
8888: my ($key,$value) = split(/=/,$item);
8889: $$photo{$key} = $value;
8890: }
8891: return $outcome;
8892: }
8893: return 'error';
8894: }
8895:
8896: sub auto_instcode_format {
8897: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8898: $cat_order) = @_;
8899: my $courses = '';
8900: my @homeservers;
8901: if ($caller eq 'global') {
8902: my %servers = &get_servers($codedom,'library');
8903: foreach my $tryserver (keys(%servers)) {
8904: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8905: push(@homeservers,$tryserver);
8906: }
8907: }
8908: } elsif ($caller eq 'requests') {
8909: if ($codedom =~ /^$match_domain$/) {
8910: my $chome = &domain($codedom,'primary');
8911: unless ($chome eq 'no_host') {
8912: push(@homeservers,$chome);
8913: }
8914: }
8915: } else {
8916: push(@homeservers,&homeserver($caller,$codedom));
8917: }
8918: foreach my $code (keys(%{$instcodes})) {
8919: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8920: }
8921: chop($courses);
8922: my $ok_response = 0;
8923: my $response;
8924: while (@homeservers > 0 && $ok_response == 0) {
8925: my $server = shift(@homeservers);
8926: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8927: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8928: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8929: split(/:/,$response);
8930: %{$codes} = (%{$codes},&str2hash($codes_str));
8931: push(@{$codetitles},&str2array($codetitles_str));
8932: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8933: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8934: $ok_response = 1;
8935: }
8936: }
8937: if ($ok_response) {
8938: return 'ok';
8939: } else {
8940: return $response;
8941: }
8942: }
8943:
8944: sub auto_instcode_defaults {
8945: my ($domain,$returnhash,$code_order) = @_;
8946: my @homeservers;
8947:
8948: my %servers = &get_servers($domain,'library');
8949: foreach my $tryserver (keys(%servers)) {
8950: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8951: push(@homeservers,$tryserver);
8952: }
8953: }
8954:
8955: my $response;
8956: foreach my $server (@homeservers) {
8957: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8958: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8959:
8960: foreach my $pair (split(/\&/,$response)) {
8961: my ($name,$value)=split(/\=/,$pair);
8962: if ($name eq 'code_order') {
8963: @{$code_order} = split(/\&/,&unescape($value));
8964: } else {
8965: $returnhash->{&unescape($name)}=&unescape($value);
8966: }
8967: }
8968: return 'ok';
8969: }
8970:
8971: return $response;
8972: }
8973:
8974: sub auto_possible_instcodes {
8975: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8976: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8977: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8978: return;
8979: }
8980: my (@homeservers,$uhome);
8981: if (defined(&domain($domain,'primary'))) {
8982: $uhome=&domain($domain,'primary');
8983: push(@homeservers,&domain($domain,'primary'));
8984: } else {
8985: my %servers = &get_servers($domain,'library');
8986: foreach my $tryserver (keys(%servers)) {
8987: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8988: push(@homeservers,$tryserver);
8989: }
8990: }
8991: }
8992: my $response;
8993: foreach my $server (@homeservers) {
8994: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8995: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8996: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8997: split(':',$response);
8998: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8999: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9000: foreach my $item (split('&',$cat_title)) {
9001: my ($name,$value)=split('=',$item);
9002: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9003: }
9004: foreach my $item (split('&',$cat_order)) {
9005: my ($name,$value)=split('=',$item);
9006: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9007: }
9008: return 'ok';
9009: }
9010: return $response;
9011: }
9012:
9013: sub auto_courserequest_checks {
9014: my ($dom) = @_;
9015: my ($homeserver,%validations);
9016: if ($dom =~ /^$match_domain$/) {
9017: $homeserver = &domain($dom,'primary');
9018: }
9019: unless ($homeserver eq 'no_host') {
9020: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9021: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9022: my @items = split(/&/,$response);
9023: foreach my $item (@items) {
9024: my ($key,$value) = split('=',$item);
9025: $validations{&unescape($key)} = &thaw_unescape($value);
9026: }
9027: }
9028: }
9029: return %validations;
9030: }
9031:
9032: sub auto_courserequest_validation {
9033: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9034: my ($homeserver,$response);
9035: if ($dom =~ /^$match_domain$/) {
9036: $homeserver = &domain($dom,'primary');
9037: }
9038: unless ($homeserver eq 'no_host') {
9039: my $customdata;
9040: if (ref($custominfo) eq 'HASH') {
9041: $customdata = &freeze_escape($custominfo);
9042: }
9043: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9044: ':'.&escape($crstype).':'.&escape($inststatuslist).
9045: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9046: $customdata,$homeserver));
9047: }
9048: return $response;
9049: }
9050:
9051: sub auto_validate_class_sec {
9052: my ($cdom,$cnum,$owners,$inst_class) = @_;
9053: my $homeserver = &homeserver($cnum,$cdom);
9054: my $ownerlist;
9055: if (ref($owners) eq 'ARRAY') {
9056: $ownerlist = join(',',@{$owners});
9057: } else {
9058: $ownerlist = $owners;
9059: }
9060: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9061: &escape($ownerlist).':'.$cdom,$homeserver);
9062: return $response;
9063: }
9064:
9065: sub auto_validate_instclasses {
9066: my ($cdom,$cnum,$owners,$classesref) = @_;
9067: my ($homeserver,%validations);
9068: $homeserver = &homeserver($cnum,$cdom);
9069: unless ($homeserver eq 'no_host') {
9070: my $ownerlist;
9071: if (ref($owners) eq 'ARRAY') {
9072: $ownerlist = join(',',@{$owners});
9073: } else {
9074: $ownerlist = $owners;
9075: }
9076: if (ref($classesref) eq 'HASH') {
9077: my $classes = &freeze_escape($classesref);
9078: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9079: ':'.$cdom.':'.$classes,$homeserver);
9080: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9081: my @items = split(/&/,$response);
9082: foreach my $item (@items) {
9083: my ($key,$value) = split('=',$item);
9084: $validations{&unescape($key)} = &thaw_unescape($value);
9085: }
9086: }
9087: }
9088: }
9089: return %validations;
9090: }
9091:
9092: sub auto_crsreq_update {
9093: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9094: $code,$accessstart,$accessend,$inbound) = @_;
9095: my ($homeserver,%crsreqresponse);
9096: if ($cdom =~ /^$match_domain$/) {
9097: $homeserver = &domain($cdom,'primary');
9098: }
9099: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9100: my $info;
9101: if (ref($inbound) eq 'HASH') {
9102: $info = &freeze_escape($inbound);
9103: }
9104: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9105: ':'.&escape($action).':'.&escape($ownername).':'.
9106: &escape($ownerdomain).':'.&escape($fullname).':'.
9107: &escape($title).':'.&escape($code).':'.
9108: &escape($accessstart).':'.&escape($accessend).':'.$info,
9109: $homeserver);
9110: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9111: my @items = split(/&/,$response);
9112: foreach my $item (@items) {
9113: my ($key,$value) = split('=',$item);
9114: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9115: }
9116: }
9117: }
9118: return \%crsreqresponse;
9119: }
9120:
9121: sub auto_export_grades {
9122: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9123: my ($homeserver,%exportresponse);
9124: if ($cdom =~ /^$match_domain$/) {
9125: $homeserver = &domain($cdom,'primary');
9126: }
9127: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9128: my $info;
9129: if (ref($inforef) eq 'HASH') {
9130: $info = &freeze_escape($inforef);
9131: }
9132: if (ref($gradesref) eq 'HASH') {
9133: my $grades = &freeze_escape($gradesref);
9134: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9135: $info.':'.$grades,$homeserver);
9136: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9137: my @items = split(/&/,$response);
9138: foreach my $item (@items) {
9139: my ($key,$value) = split('=',$item);
9140: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9141: }
9142: }
9143: }
9144: }
9145: return \%exportresponse;
9146: }
9147:
9148: sub check_instcode_cloning {
9149: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9150: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9151: return;
9152: }
9153: my $canclone;
9154: if (@{$code_order} > 0) {
9155: my $instcoderegexp ='^';
9156: my @clonecodes = split(/\&/,$cloner);
9157: foreach my $item (@{$code_order}) {
9158: if (grep(/^\Q$item\E=/,@clonecodes)) {
9159: foreach my $pair (@clonecodes) {
9160: my ($key,$val) = split(/\=/,$pair,2);
9161: $val = &unescape($val);
9162: if ($key eq $item) {
9163: $instcoderegexp .= '('.$val.')';
9164: last;
9165: }
9166: }
9167: } else {
9168: $instcoderegexp .= $codedefaults->{$item};
9169: }
9170: }
9171: $instcoderegexp .= '$';
9172: my (@from,@to);
9173: eval {
9174: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9175: (@to) = ($clonetocode =~ /$instcoderegexp/);
9176: };
9177: if ((@from > 0) && (@to > 0)) {
9178: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9179: if (!@diffs) {
9180: $canclone = 1;
9181: }
9182: }
9183: }
9184: return $canclone;
9185: }
9186:
9187: sub default_instcode_cloning {
9188: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9189: my (%codedefaults,@code_order,$canclone);
9190: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9191: %codedefaults = %{$codedefaultsref};
9192: @code_order = @{$codeorderref};
9193: } elsif ($clonedom) {
9194: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9195: }
9196: if (($domdefclone) && (@code_order)) {
9197: my @clonecodes = split(/\+/,$domdefclone);
9198: my $instcoderegexp ='^';
9199: foreach my $item (@code_order) {
9200: if (grep(/^\Q$item\E$/,@clonecodes)) {
9201: $instcoderegexp .= '('.$codedefaults{$item}.')';
9202: } else {
9203: $instcoderegexp .= $codedefaults{$item};
9204: }
9205: }
9206: $instcoderegexp .= '$';
9207: my (@from,@to);
9208: eval {
9209: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9210: (@to) = ($clonetocode =~ /$instcoderegexp/);
9211: };
9212: if ((@from > 0) && (@to > 0)) {
9213: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9214: if (!@diffs) {
9215: $canclone = 1;
9216: }
9217: }
9218: }
9219: return $canclone;
9220: }
9221:
9222: # ------------------------------------------------------- Course Group routines
9223:
9224: sub get_coursegroups {
9225: my ($cdom,$cnum,$group,$namespace) = @_;
9226: return(&dump($namespace,$cdom,$cnum,$group));
9227: }
9228:
9229: sub modify_coursegroup {
9230: my ($cdom,$cnum,$groupsettings) = @_;
9231: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9232: }
9233:
9234: sub toggle_coursegroup_status {
9235: my ($cdom,$cnum,$group,$action) = @_;
9236: my ($from_namespace,$to_namespace);
9237: if ($action eq 'delete') {
9238: $from_namespace = 'coursegroups';
9239: $to_namespace = 'deleted_groups';
9240: } else {
9241: $from_namespace = 'deleted_groups';
9242: $to_namespace = 'coursegroups';
9243: }
9244: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9245: if (my $tmp = &error(%curr_group)) {
9246: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9247: return ('read error',$tmp);
9248: } else {
9249: my %savedsettings = %curr_group;
9250: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9251: my $deloutcome;
9252: if ($result eq 'ok') {
9253: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9254: } else {
9255: return ('write error',$result);
9256: }
9257: if ($deloutcome eq 'ok') {
9258: return 'ok';
9259: } else {
9260: return ('delete error',$deloutcome);
9261: }
9262: }
9263: }
9264:
9265: sub modify_group_roles {
9266: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9267: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9268: my $role = 'gr/'.&escape($userprivs);
9269: my ($uname,$udom) = split(/:/,$user);
9270: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9271: if ($result eq 'ok') {
9272: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9273: }
9274: return $result;
9275: }
9276:
9277: sub modify_coursegroup_membership {
9278: my ($cdom,$cnum,$membership) = @_;
9279: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9280: return $result;
9281: }
9282:
9283: sub get_active_groups {
9284: my ($udom,$uname,$cdom,$cnum) = @_;
9285: my $now = time;
9286: my %groups = ();
9287: foreach my $key (keys(%env)) {
9288: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9289: my ($start,$end) = split(/\./,$env{$key});
9290: if (($end!=0) && ($end<$now)) { next; }
9291: if (($start!=0) && ($start>$now)) { next; }
9292: if ($1 eq $cdom && $2 eq $cnum) {
9293: $groups{$3} = $env{$key} ;
9294: }
9295: }
9296: }
9297: return %groups;
9298: }
9299:
9300: sub get_group_membership {
9301: my ($cdom,$cnum,$group) = @_;
9302: return(&dump('groupmembership',$cdom,$cnum,$group));
9303: }
9304:
9305: sub get_users_groups {
9306: my ($udom,$uname,$courseid) = @_;
9307: my @usersgroups;
9308: my $cachetime=1800;
9309:
9310: my $hashid="$udom:$uname:$courseid";
9311: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9312: if (defined($cached)) {
9313: @usersgroups = split(/:/,$grouplist);
9314: } else {
9315: $grouplist = '';
9316: my $courseurl = &courseid_to_courseurl($courseid);
9317: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9318: my $access_end = $env{'course.'.$courseid.
9319: '.default_enrollment_end_date'};
9320: my $now = time;
9321: foreach my $key (keys(%roleshash)) {
9322: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9323: my $group = $1;
9324: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9325: my $start = $2;
9326: my $end = $1;
9327: if ($start == -1) { next; } # deleted from group
9328: if (($start!=0) && ($start>$now)) { next; }
9329: if (($end!=0) && ($end<$now)) {
9330: if ($access_end && $access_end < $now) {
9331: if ($access_end - $end < 86400) {
9332: push(@usersgroups,$group);
9333: }
9334: }
9335: next;
9336: }
9337: push(@usersgroups,$group);
9338: }
9339: }
9340: }
9341: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9342: $grouplist = join(':',@usersgroups);
9343: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9344: }
9345: return @usersgroups;
9346: }
9347:
9348: sub devalidate_getgroups_cache {
9349: my ($udom,$uname,$cdom,$cnum)=@_;
9350: my $courseid = $cdom.'_'.$cnum;
9351:
9352: my $hashid="$udom:$uname:$courseid";
9353: &devalidate_cache_new('getgroups',$hashid);
9354: }
9355:
9356: # ------------------------------------------------------------------ Plain Text
9357:
9358: sub plaintext {
9359: my ($short,$type,$cid,$forcedefault) = @_;
9360: if ($short =~ m{^cr/}) {
9361: return (split('/',$short))[-1];
9362: }
9363: if (!defined($cid)) {
9364: $cid = $env{'request.course.id'};
9365: }
9366: my %rolenames = (
9367: Course => 'std',
9368: Community => 'alt1',
9369: Placement => 'std',
9370: );
9371: if ($cid ne '') {
9372: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9373: unless ($forcedefault) {
9374: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9375: &Apache::lonlocal::mt_escape(\$roletext);
9376: return &Apache::lonlocal::mt($roletext);
9377: }
9378: }
9379: }
9380: if ((defined($type)) && (defined($rolenames{$type})) &&
9381: (defined($rolenames{$type})) &&
9382: (defined($prp{$short}{$rolenames{$type}}))) {
9383: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9384: } elsif ($cid ne '') {
9385: my $crstype = $env{'course.'.$cid.'.type'};
9386: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9387: (defined($prp{$short}{$rolenames{$crstype}}))) {
9388: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9389: }
9390: }
9391: return &Apache::lonlocal::mt($prp{$short}{'std'});
9392: }
9393:
9394: # ----------------------------------------------------------------- Assign Role
9395:
9396: sub assignrole {
9397: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9398: $context)=@_;
9399: my $mrole;
9400: if ($role =~ /^cr\//) {
9401: my $cwosec=$url;
9402: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9403: unless (&allowed('ccr',$cwosec)) {
9404: my $refused = 1;
9405: if ($context eq 'requestcourses') {
9406: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9407: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9408: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9409: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9410: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9411: if ($crsenv{'internal.courseowner'} eq
9412: $env{'user.name'}.':'.$env{'user.domain'}) {
9413: $refused = '';
9414: }
9415: }
9416: }
9417: }
9418: }
9419: if ($refused) {
9420: &logthis('Refused custom assignrole: '.
9421: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9422: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9423: return 'refused';
9424: }
9425: }
9426: $mrole='cr';
9427: } elsif ($role =~ /^gr\//) {
9428: my $cwogrp=$url;
9429: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9430: unless (&allowed('mdg',$cwogrp)) {
9431: &logthis('Refused group assignrole: '.
9432: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9433: $env{'user.name'}.' at '.$env{'user.domain'});
9434: return 'refused';
9435: }
9436: $mrole='gr';
9437: } else {
9438: my $cwosec=$url;
9439: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9440: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9441: my $refused;
9442: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9443: if (!(&allowed('c'.$role,$url))) {
9444: $refused = 1;
9445: }
9446: } else {
9447: $refused = 1;
9448: }
9449: if ($refused) {
9450: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9451: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9452: my %crsenv;
9453: if ($role eq 'cc' || $role eq 'co') {
9454: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9455: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9456: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9457: if ($crsenv{'internal.courseowner'} eq
9458: $env{'user.name'}.':'.$env{'user.domain'}) {
9459: $refused = '';
9460: }
9461: }
9462: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9463: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9464: if ($crsenv{'internal.courseowner'} eq
9465: $env{'user.name'}.':'.$env{'user.domain'}) {
9466: $refused = '';
9467: }
9468: }
9469: }
9470: }
9471: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9472: if ($role eq 'st') {
9473: $refused = '';
9474: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9475: $refused = '';
9476: }
9477: } elsif ($context eq 'requestcourses') {
9478: my @possroles = ('st','ta','ep','in','cc','co');
9479: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9480: my $wrongcc;
9481: if ($cnum =~ /^$match_community$/) {
9482: $wrongcc = 1 if ($role eq 'cc');
9483: } else {
9484: $wrongcc = 1 if ($role eq 'co');
9485: }
9486: unless ($wrongcc) {
9487: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9488: if ($crsenv{'internal.courseowner'} eq
9489: $env{'user.name'}.':'.$env{'user.domain'}) {
9490: $refused = '';
9491: }
9492: }
9493: }
9494: } elsif ($context eq 'requestauthor') {
9495: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9496: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9497: if ($env{'environment.requestauthor'} eq 'automatic') {
9498: $refused = '';
9499: } else {
9500: my %domdefaults = &get_domain_defaults($udom);
9501: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9502: my $checkbystatus;
9503: if ($env{'user.adv'}) {
9504: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9505: if ($disposition eq 'automatic') {
9506: $refused = '';
9507: } elsif ($disposition eq '') {
9508: $checkbystatus = 1;
9509: }
9510: } else {
9511: $checkbystatus = 1;
9512: }
9513: if ($checkbystatus) {
9514: if ($env{'environment.inststatus'}) {
9515: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9516: foreach my $type (@inststatuses) {
9517: if (($type ne '') &&
9518: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9519: $refused = '';
9520: }
9521: }
9522: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9523: $refused = '';
9524: }
9525: }
9526: }
9527: }
9528: }
9529: }
9530: if ($refused) {
9531: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9532: ' '.$role.' '.$end.' '.$start.' by '.
9533: $env{'user.name'}.' at '.$env{'user.domain'});
9534: return 'refused';
9535: }
9536: }
9537: } elsif ($role eq 'au') {
9538: if ($url ne '/'.$udom.'/') {
9539: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9540: ' to assign author role for '.$uname.':'.$udom.
9541: ' in domain: '.$url.' refused (wrong domain).');
9542: return 'refused';
9543: }
9544: }
9545: $mrole=$role;
9546: }
9547: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9548: "$udom:$uname:$url".'_'."$mrole=$role";
9549: if ($end) { $command.='_'.$end; }
9550: if ($start) {
9551: if ($end) {
9552: $command.='_'.$start;
9553: } else {
9554: $command.='_0_'.$start;
9555: }
9556: }
9557: my $origstart = $start;
9558: my $origend = $end;
9559: my $delflag;
9560: # actually delete
9561: if ($deleteflag) {
9562: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9563: # modify command to delete the role
9564: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9565: "$udom:$uname:$url".'_'."$mrole";
9566: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9567: # set start and finish to negative values for userrolelog
9568: $start=-1;
9569: $end=-1;
9570: $delflag = 1;
9571: }
9572: }
9573: # send command
9574: my $answer=&reply($command,&homeserver($uname,$udom));
9575: # log new user role if status is ok
9576: if ($answer eq 'ok') {
9577: &userrolelog($role,$uname,$udom,$url,$start,$end);
9578: if (($role eq 'cc') || ($role eq 'in') ||
9579: ($role eq 'ep') || ($role eq 'ad') ||
9580: ($role eq 'ta') || ($role eq 'st') ||
9581: ($role=~/^cr/) || ($role eq 'gr') ||
9582: ($role eq 'co')) {
9583: # for course roles, perform group memberships changes triggered by role change.
9584: unless ($role =~ /^gr/) {
9585: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9586: $origstart,$selfenroll,$context);
9587: }
9588: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9589: $selfenroll,$context);
9590: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9591: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9592: ($role eq 'da')) {
9593: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9594: $context);
9595: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9596: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9597: $context);
9598: }
9599: if ($role eq 'cc') {
9600: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9601: }
9602: }
9603: return $answer;
9604: }
9605:
9606: sub autoupdate_coowners {
9607: my ($url,$end,$start,$uname,$udom) = @_;
9608: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9609: if (($cdom ne '') && ($cnum ne '')) {
9610: my $now = time;
9611: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9612: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9613: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9614: my $instcode = $coursehash{'internal.coursecode'};
9615: if ($instcode ne '') {
9616: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9617: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9618: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9619: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9620: if ($result eq 'valid') {
9621: if ($coursehash{'internal.co-owners'}) {
9622: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9623: push(@newcoowners,$coowner);
9624: }
9625: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9626: push(@newcoowners,$uname.':'.$udom);
9627: }
9628: @newcoowners = sort(@newcoowners);
9629: } else {
9630: push(@newcoowners,$uname.':'.$udom);
9631: }
9632: } else {
9633: if ($coursehash{'internal.co-owners'}) {
9634: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9635: unless ($coowner eq $uname.':'.$udom) {
9636: push(@newcoowners,$coowner);
9637: }
9638: }
9639: unless (@newcoowners > 0) {
9640: $delcoowners = 1;
9641: $coowners = '';
9642: }
9643: }
9644: }
9645: if (@newcoowners || $delcoowners) {
9646: &store_coowners($cdom,$cnum,$coursehash{'home'},
9647: $delcoowners,@newcoowners);
9648: }
9649: }
9650: }
9651: }
9652: }
9653: }
9654: }
9655:
9656: sub store_coowners {
9657: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9658: my $cid = $cdom.'_'.$cnum;
9659: my ($coowners,$delresult,$putresult);
9660: if (@newcoowners) {
9661: $coowners = join(',',@newcoowners);
9662: my %coownershash = (
9663: 'internal.co-owners' => $coowners,
9664: );
9665: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9666: if ($putresult eq 'ok') {
9667: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9668: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9669: }
9670: }
9671: }
9672: if ($delcoowners) {
9673: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9674: if ($delresult eq 'ok') {
9675: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9676: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9677: }
9678: }
9679: }
9680: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9681: my %crsinfo =
9682: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9683: if (ref($crsinfo{$cid}) eq 'HASH') {
9684: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9685: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9686: }
9687: }
9688: }
9689:
9690: # -------------------------------------------------- Modify user authentication
9691: # Overrides without validation
9692:
9693: sub modifyuserauth {
9694: my ($udom,$uname,$umode,$upass)=@_;
9695: my $uhome=&homeserver($uname,$udom);
9696: unless (&allowed('mau',$udom)) { return 'refused'; }
9697: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9698: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9699: ' in domain '.$env{'request.role.domain'});
9700: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9701: &escape($upass),$uhome);
9702: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9703: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9704: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9705: &log($udom,,$uname,$uhome,
9706: 'Authentication changed by '.$env{'user.domain'}.', '.
9707: $env{'user.name'}.', '.$umode.
9708: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9709: unless ($reply eq 'ok') {
9710: &logthis('Authentication mode error: '.$reply);
9711: return 'error: '.$reply;
9712: }
9713: return 'ok';
9714: }
9715:
9716: # --------------------------------------------------------------- Modify a user
9717:
9718: sub modifyuser {
9719: my ($udom, $uname, $uid,
9720: $umode, $upass, $first,
9721: $middle, $last, $gene,
9722: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9723: $udom= &LONCAPA::clean_domain($udom);
9724: $uname=&LONCAPA::clean_username($uname);
9725: my $showcandelete = 'none';
9726: if (ref($candelete) eq 'ARRAY') {
9727: if (@{$candelete} > 0) {
9728: $showcandelete = join(', ',@{$candelete});
9729: }
9730: }
9731: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9732: $umode.', '.$first.', '.$middle.', '.
9733: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9734: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9735: ' desiredhome not specified').
9736: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9737: ' in domain '.$env{'request.role.domain'});
9738: my $uhome=&homeserver($uname,$udom,'true');
9739: my $newuser;
9740: if ($uhome eq 'no_host') {
9741: $newuser = 1;
9742: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9743: ($umode eq 'lti')) {
9744: return 'error: more information needed to create new user';
9745: }
9746: }
9747: # ----------------------------------------------------------------- Create User
9748: if (($uhome eq 'no_host') &&
9749: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9750: my $unhome='';
9751: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9752: $unhome = $desiredhome;
9753: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9754: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9755: } else { # load balancing routine for determining $unhome
9756: my $loadm=10000000;
9757: my %servers = &get_servers($udom,'library');
9758: foreach my $tryserver (keys(%servers)) {
9759: my $answer=reply('load',$tryserver);
9760: if (($answer=~/\d+/) && ($answer<$loadm)) {
9761: $loadm=$answer;
9762: $unhome=$tryserver;
9763: }
9764: }
9765: }
9766: if (($unhome eq '') || ($unhome eq 'no_host')) {
9767: return 'error: unable to find a home server for '.$uname.
9768: ' in domain '.$udom;
9769: }
9770: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9771: &escape($upass),$unhome);
9772: unless ($reply eq 'ok') {
9773: return 'error: '.$reply;
9774: }
9775: $uhome=&homeserver($uname,$udom,'true');
9776: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9777: return 'error: unable verify users home machine.';
9778: }
9779: } # End of creation of new user
9780: # ---------------------------------------------------------------------- Add ID
9781: if ($uid) {
9782: $uid=~tr/A-Z/a-z/;
9783: my %uidhash=&idrget($udom,$uname);
9784: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9785: && (!$forceid)) {
9786: unless ($uid eq $uidhash{$uname}) {
9787: return 'error: user id "'.$uid.'" does not match '.
9788: 'current user id "'.$uidhash{$uname}.'".';
9789: }
9790: } else {
9791: &idput($udom,{$uname => $uid},$uhome,'ids');
9792: }
9793: }
9794: # -------------------------------------------------------------- Add names, etc
9795: my @tmp=&get('environment',
9796: ['firstname','middlename','lastname','generation','id',
9797: 'permanentemail','inststatus'],
9798: $udom,$uname);
9799: my (%names,%oldnames);
9800: if ($tmp[0] =~ m/^error:.*/) {
9801: %names=();
9802: } else {
9803: %names = @tmp;
9804: %oldnames = %names;
9805: }
9806: #
9807: # If name, email and/or uid are blank (e.g., because an uploaded file
9808: # of users did not contain them), do not overwrite existing values
9809: # unless field is in $candelete array ref.
9810: #
9811:
9812: my @fields = ('firstname','middlename','lastname','generation',
9813: 'permanentemail','id');
9814: my %newvalues;
9815: if (ref($candelete) eq 'ARRAY') {
9816: foreach my $field (@fields) {
9817: if (grep(/^\Q$field\E$/,@{$candelete})) {
9818: if ($field eq 'firstname') {
9819: $names{$field} = $first;
9820: } elsif ($field eq 'middlename') {
9821: $names{$field} = $middle;
9822: } elsif ($field eq 'lastname') {
9823: $names{$field} = $last;
9824: } elsif ($field eq 'generation') {
9825: $names{$field} = $gene;
9826: } elsif ($field eq 'permanentemail') {
9827: $names{$field} = $email;
9828: } elsif ($field eq 'id') {
9829: $names{$field} = $uid;
9830: }
9831: }
9832: }
9833: }
9834: if ($first) { $names{'firstname'} = $first; }
9835: if (defined($middle)) { $names{'middlename'} = $middle; }
9836: if ($last) { $names{'lastname'} = $last; }
9837: if (defined($gene)) { $names{'generation'} = $gene; }
9838: if ($email) {
9839: $email=~s/[^\w\@\.\-\,]//gs;
9840: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9841: }
9842: if ($uid) { $names{'id'} = $uid; }
9843: if (defined($inststatus)) {
9844: $names{'inststatus'} = '';
9845: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9846: if (ref($usertypes) eq 'HASH') {
9847: my @okstatuses;
9848: foreach my $item (split(/:/,$inststatus)) {
9849: if (defined($usertypes->{$item})) {
9850: push(@okstatuses,$item);
9851: }
9852: }
9853: if (@okstatuses) {
9854: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9855: }
9856: }
9857: }
9858: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9859: $umode.', '.$first.', '.$middle.', '.
9860: $last.', '.$gene.', '.$email.', '.$inststatus;
9861: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9862: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9863: } else {
9864: $logmsg .= ' during self creation';
9865: }
9866: my $changed;
9867: if ($newuser) {
9868: $changed = 1;
9869: } else {
9870: foreach my $field (@fields) {
9871: if ($names{$field} ne $oldnames{$field}) {
9872: $changed = 1;
9873: last;
9874: }
9875: }
9876: }
9877: unless ($changed) {
9878: $logmsg = 'No changes in user information needed for: '.$logmsg;
9879: &logthis($logmsg);
9880: return 'ok';
9881: }
9882: my $reply = &put('environment', \%names, $udom,$uname);
9883: if ($reply ne 'ok') {
9884: return 'error: '.$reply;
9885: }
9886: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9887: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9888: }
9889: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9890: &devalidate_cache_new('namescache',$uname.':'.$udom);
9891: $logmsg = 'Success modifying user '.$logmsg;
9892: &logthis($logmsg);
9893: return 'ok';
9894: }
9895:
9896: # -------------------------------------------------------------- Modify student
9897:
9898: sub modifystudent {
9899: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9900: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9901: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9902: if (!$cid) {
9903: unless ($cid=$env{'request.course.id'}) {
9904: return 'not_in_class';
9905: }
9906: }
9907: # --------------------------------------------------------------- Make the user
9908: my $reply=&modifyuser
9909: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9910: $desiredhome,$email,$inststatus);
9911: unless ($reply eq 'ok') { return $reply; }
9912: # This will cause &modify_student_enrollment to get the uid from the
9913: # student's environment
9914: $uid = undef if (!$forceid);
9915: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9916: $gene,$usec,$end,$start,$type,$locktype,
9917: $cid,$selfenroll,$context,$credits,$instsec);
9918: return $reply;
9919: }
9920:
9921: sub modify_student_enrollment {
9922: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9923: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9924: my ($cdom,$cnum,$chome);
9925: if (!$cid) {
9926: unless ($cid=$env{'request.course.id'}) {
9927: return 'not_in_class';
9928: }
9929: $cdom=$env{'course.'.$cid.'.domain'};
9930: $cnum=$env{'course.'.$cid.'.num'};
9931: } else {
9932: ($cdom,$cnum)=split(/_/,$cid);
9933: }
9934: $chome=$env{'course.'.$cid.'.home'};
9935: if (!$chome) {
9936: $chome=&homeserver($cnum,$cdom);
9937: }
9938: if (!$chome) { return 'unknown_course'; }
9939: # Make sure the user exists
9940: my $uhome=&homeserver($uname,$udom);
9941: if (($uhome eq '') || ($uhome eq 'no_host')) {
9942: return 'error: no such user';
9943: }
9944: # Get student data if we were not given enough information
9945: if (!defined($first) || $first eq '' ||
9946: !defined($last) || $last eq '' ||
9947: !defined($uid) || $uid eq '' ||
9948: !defined($middle) || $middle eq '' ||
9949: !defined($gene) || $gene eq '') {
9950: # They did not supply us with enough data to enroll the student, so
9951: # we need to pick up more information.
9952: my %tmp = &get('environment',
9953: ['firstname','middlename','lastname', 'generation','id']
9954: ,$udom,$uname);
9955:
9956: #foreach my $key (keys(%tmp)) {
9957: # &logthis("key $key = ".$tmp{$key});
9958: #}
9959: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9960: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9961: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9962: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9963: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9964: }
9965: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9966: my $user = "$uname:$udom";
9967: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9968: my $reply=cput('classlist',
9969: {$user =>
9970: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9971: $cdom,$cnum);
9972: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9973: &devalidate_getsection_cache($udom,$uname,$cid);
9974: } else {
9975: return 'error: '.$reply;
9976: }
9977: # Add student role to user
9978: my $uurl='/'.$cid;
9979: $uurl=~s/\_/\//g;
9980: if ($usec) {
9981: $uurl.='/'.$usec;
9982: }
9983: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9984: $selfenroll,$context);
9985: if ($result ne 'ok') {
9986: if ($old_entry{$user} ne '') {
9987: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9988: } else {
9989: $reply = &del('classlist',[$user],$cdom,$cnum);
9990: }
9991: }
9992: return $result;
9993: }
9994:
9995: sub format_name {
9996: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9997: my $name;
9998: if ($first ne 'lastname') {
9999: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10000: } else {
10001: if ($lastname=~/\S/) {
10002: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10003: $name=~s/\s+,/,/;
10004: } else {
10005: $name.= $firstname.' '.$middlename.' '.$generation;
10006: }
10007: }
10008: $name=~s/^\s+//;
10009: $name=~s/\s+$//;
10010: $name=~s/\s+/ /g;
10011: return $name;
10012: }
10013:
10014: # ------------------------------------------------- Write to course preferences
10015:
10016: sub writecoursepref {
10017: my ($courseid,%prefs)=@_;
10018: $courseid=~s/^\///;
10019: $courseid=~s/\_/\//g;
10020: my ($cdomain,$cnum)=split(/\//,$courseid);
10021: my $chome=homeserver($cnum,$cdomain);
10022: if (($chome eq '') || ($chome eq 'no_host')) {
10023: return 'error: no such course';
10024: }
10025: my $cstring='';
10026: foreach my $pref (keys(%prefs)) {
10027: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10028: }
10029: $cstring=~s/\&$//;
10030: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10031: }
10032:
10033: # ---------------------------------------------------------- Make/modify course
10034:
10035: sub createcourse {
10036: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10037: $course_owner,$crstype,$cnum,$context,$category)=@_;
10038: $url=&declutter($url);
10039: my $cid='';
10040: if ($context eq 'requestcourses') {
10041: my $can_create = 0;
10042: my ($ownername,$ownerdom) = split(':',$course_owner);
10043: if ($udom eq $ownerdom) {
10044: if (&usertools_access($ownername,$ownerdom,$category,undef,
10045: $context)) {
10046: $can_create = 1;
10047: }
10048: } else {
10049: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10050: $category);
10051: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10052: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10053: if (@curr > 0) {
10054: my @options = qw(approval validate autolimit);
10055: my $optregex = join('|',@options);
10056: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10057: $can_create = 1;
10058: }
10059: }
10060: }
10061: }
10062: if ($can_create) {
10063: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10064: unless (&allowed('ccc',$udom)) {
10065: return 'refused';
10066: }
10067: }
10068: } else {
10069: return 'refused';
10070: }
10071: } elsif (!&allowed('ccc',$udom)) {
10072: return 'refused';
10073: }
10074: # --------------------------------------------------------------- Get Unique ID
10075: my $uname;
10076: if ($cnum =~ /^$match_courseid$/) {
10077: my $chome=&homeserver($cnum,$udom,'true');
10078: if (($chome eq '') || ($chome eq 'no_host')) {
10079: $uname = $cnum;
10080: } else {
10081: $uname = &generate_coursenum($udom,$crstype);
10082: }
10083: } else {
10084: $uname = &generate_coursenum($udom,$crstype);
10085: }
10086: return $uname if ($uname =~ /^error/);
10087: # -------------------------------------------------- Check supplied server name
10088: if (!defined($course_server)) {
10089: if (defined(&domain($udom,'primary'))) {
10090: $course_server = &domain($udom,'primary');
10091: } else {
10092: $course_server = $env{'user.home'};
10093: }
10094: }
10095: my %host_servers =
10096: &Apache::lonnet::get_servers($udom,'library');
10097: unless ($host_servers{$course_server}) {
10098: return 'error: invalid home server for course: '.$course_server;
10099: }
10100: # ------------------------------------------------------------- Make the course
10101: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10102: $course_server);
10103: unless ($reply eq 'ok') { return 'error: '.$reply; }
10104: my $uhome=&homeserver($uname,$udom,'true');
10105: if (($uhome eq '') || ($uhome eq 'no_host')) {
10106: return 'error: no such course';
10107: }
10108: # ----------------------------------------------------------------- Course made
10109: # log existence
10110: my $now = time;
10111: my $newcourse = {
10112: $udom.'_'.$uname => {
10113: description => $description,
10114: inst_code => $inst_code,
10115: owner => $course_owner,
10116: type => $crstype,
10117: creator => $env{'user.name'}.':'.
10118: $env{'user.domain'},
10119: created => $now,
10120: context => $context,
10121: },
10122: };
10123: &courseidput($udom,$newcourse,$uhome,'notime');
10124: # set toplevel url
10125: my $topurl=$url;
10126: unless ($nonstandard) {
10127: # ------------------------------------------ For standard courses, make top url
10128: my $mapurl=&clutter($url);
10129: if ($mapurl eq '/res/') { $mapurl=''; }
10130: $env{'form.initmap'}=(<<ENDINITMAP);
10131: <map>
10132: <resource id="1" type="start"></resource>
10133: <resource id="2" src="$mapurl"></resource>
10134: <resource id="3" type="finish"></resource>
10135: <link index="1" from="1" to="2"></link>
10136: <link index="2" from="2" to="3"></link>
10137: </map>
10138: ENDINITMAP
10139: $topurl=&declutter(
10140: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10141: );
10142: }
10143: # ----------------------------------------------------------- Write preferences
10144: &writecoursepref($udom.'_'.$uname,
10145: ('description' => $description,
10146: 'url' => $topurl,
10147: 'internal.creator' => $env{'user.name'}.':'.
10148: $env{'user.domain'},
10149: 'internal.created' => $now,
10150: 'internal.creationcontext' => $context)
10151: );
10152: return '/'.$udom.'/'.$uname;
10153: }
10154:
10155: # ------------------------------------------------------------------- Create ID
10156: sub generate_coursenum {
10157: my ($udom,$crstype) = @_;
10158: my $domdesc = &domain($udom);
10159: return 'error: invalid domain' if ($domdesc eq '');
10160: my $first;
10161: if ($crstype eq 'Community') {
10162: $first = '0';
10163: } else {
10164: $first = int(1+rand(9));
10165: }
10166: my $uname=$first.
10167: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10168: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10169: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10170: # ----------------------------------------------- Make sure that does not exist
10171: my $uhome=&homeserver($uname,$udom,'true');
10172: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10173: if ($crstype eq 'Community') {
10174: $first = '0';
10175: } else {
10176: $first = int(1+rand(9));
10177: }
10178: $uname=$first.
10179: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10180: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10181: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10182: $uhome=&homeserver($uname,$udom,'true');
10183: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10184: return 'error: unable to generate unique course-ID';
10185: }
10186: }
10187: return $uname;
10188: }
10189:
10190: sub is_course {
10191: my ($cdom, $cnum) = scalar(@_) == 1 ?
10192: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10193:
10194: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10195: my $uhome=&homeserver($cnum,$cdom);
10196: my $iscourse;
10197: if (grep { $_ eq $uhome } current_machine_ids()) {
10198: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10199: } else {
10200: my $hashid = $cdom.':'.$cnum;
10201: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10202: unless (defined($cached)) {
10203: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10204: $cnum,undef,undef,'.');
10205: $iscourse = 0;
10206: if (exists($courses{$cdom.'_'.$cnum})) {
10207: $iscourse = 1;
10208: }
10209: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10210: }
10211: }
10212: return unless ($iscourse);
10213: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10214: }
10215:
10216: sub store_userdata {
10217: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10218: my $result;
10219: if ($datakey ne '') {
10220: if (ref($storehash) eq 'HASH') {
10221: if ($udom eq '' || $uname eq '') {
10222: $udom = $env{'user.domain'};
10223: $uname = $env{'user.name'};
10224: }
10225: my $uhome=&homeserver($uname,$udom);
10226: if (($uhome eq '') || ($uhome eq 'no_host')) {
10227: $result = 'error: no_host';
10228: } else {
10229: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10230: $storehash->{'host'} = $perlvar{'lonHostID'};
10231:
10232: my $namevalue='';
10233: foreach my $key (keys(%{$storehash})) {
10234: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10235: }
10236: $namevalue=~s/\&$//;
10237: unless ($namespace eq 'courserequests') {
10238: $datakey = &escape($datakey);
10239: }
10240: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10241: $namevalue,$uhome);
10242: }
10243: } else {
10244: $result = 'error: data to store was not a hash reference';
10245: }
10246: } else {
10247: $result= 'error: invalid requestkey';
10248: }
10249: return $result;
10250: }
10251:
10252: # ---------------------------------------------------------- Assign Custom Role
10253:
10254: sub assigncustomrole {
10255: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10256: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10257: $end,$start,$deleteflag,$selfenroll,$context);
10258: }
10259:
10260: # ----------------------------------------------------------------- Revoke Role
10261:
10262: sub revokerole {
10263: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10264: my $now=time;
10265: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10266: }
10267:
10268: # ---------------------------------------------------------- Revoke Custom Role
10269:
10270: sub revokecustomrole {
10271: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10272: my $now=time;
10273: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10274: $deleteflag,$selfenroll,$context);
10275: }
10276:
10277: # ------------------------------------------------------------ Disk usage
10278: sub diskusage {
10279: my ($udom,$uname,$directorypath,$getpropath)=@_;
10280: $directorypath =~ s/\/$//;
10281: my $listing=&reply('du2:'.&escape($directorypath).':'
10282: .&escape($getpropath).':'.&escape($uname).':'
10283: .&escape($udom),homeserver($uname,$udom));
10284: if ($listing eq 'unknown_cmd') {
10285: if ($getpropath) {
10286: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10287: }
10288: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10289: }
10290: return $listing;
10291: }
10292:
10293: sub is_locked {
10294: my ($file_name, $domain, $user, $which) = @_;
10295: my @check;
10296: my $is_locked;
10297: push (@check,$file_name);
10298: my %locked = &get('file_permissions',\@check,
10299: $env{'user.domain'},$env{'user.name'});
10300: my ($tmp)=keys(%locked);
10301: if ($tmp=~/^error:/) { undef(%locked); }
10302:
10303: if (ref($locked{$file_name}) eq 'ARRAY') {
10304: $is_locked = 'false';
10305: foreach my $entry (@{$locked{$file_name}}) {
10306: if (ref($entry) eq 'ARRAY') {
10307: $is_locked = 'true';
10308: if (ref($which) eq 'ARRAY') {
10309: push(@{$which},$entry);
10310: } else {
10311: last;
10312: }
10313: }
10314: }
10315: } else {
10316: $is_locked = 'false';
10317: }
10318: return $is_locked;
10319: }
10320:
10321: sub declutter_portfile {
10322: my ($file) = @_;
10323: $file =~ s{^(/portfolio/|portfolio/)}{/};
10324: return $file;
10325: }
10326:
10327: # ------------------------------------------------------------- Mark as Read Only
10328:
10329: sub mark_as_readonly {
10330: my ($domain,$user,$files,$what) = @_;
10331: my %current_permissions = &dump('file_permissions',$domain,$user);
10332: my ($tmp)=keys(%current_permissions);
10333: if ($tmp=~/^error:/) { undef(%current_permissions); }
10334: foreach my $file (@{$files}) {
10335: $file = &declutter_portfile($file);
10336: push(@{$current_permissions{$file}},$what);
10337: }
10338: &put('file_permissions',\%current_permissions,$domain,$user);
10339: return;
10340: }
10341:
10342: # ------------------------------------------------------------Save Selected Files
10343:
10344: sub save_selected_files {
10345: my ($user, $path, @files) = @_;
10346: my $filename = $user."savedfiles";
10347: my @other_files = &files_not_in_path($user, $path);
10348: open (OUT,'>',LONCAPA::tempdir().$filename);
10349: foreach my $file (@files) {
10350: print (OUT $env{'form.currentpath'}.$file."\n");
10351: }
10352: foreach my $file (@other_files) {
10353: print (OUT $file."\n");
10354: }
10355: close (OUT);
10356: return 'ok';
10357: }
10358:
10359: sub clear_selected_files {
10360: my ($user) = @_;
10361: my $filename = $user."savedfiles";
10362: open (OUT,'>',LONCAPA::tempdir().$filename);
10363: print (OUT undef);
10364: close (OUT);
10365: return ("ok");
10366: }
10367:
10368: sub files_in_path {
10369: my ($user, $path) = @_;
10370: my $filename = $user."savedfiles";
10371: my %return_files;
10372: open (IN,'<',LONCAPA::tempdir().$filename);
10373: while (my $line_in = <IN>) {
10374: chomp ($line_in);
10375: my @paths_and_file = split (m!/!, $line_in);
10376: my $file_part = pop (@paths_and_file);
10377: my $path_part = join ('/', @paths_and_file);
10378: $path_part.='/';
10379: my $path_and_file = $path_part.$file_part;
10380: if ($path_part eq $path) {
10381: $return_files{$file_part}= 'selected';
10382: }
10383: }
10384: close (IN);
10385: return (\%return_files);
10386: }
10387:
10388: # called in portfolio select mode, to show files selected NOT in current directory
10389: sub files_not_in_path {
10390: my ($user, $path) = @_;
10391: my $filename = $user."savedfiles";
10392: my @return_files;
10393: my $path_part;
10394: open(IN, '<',LONCAPA::tempdir().$filename);
10395: while (my $line = <IN>) {
10396: #ok, I know it's clunky, but I want it to work
10397: my @paths_and_file = split(m|/|, $line);
10398: my $file_part = pop(@paths_and_file);
10399: chomp($file_part);
10400: my $path_part = join('/', @paths_and_file);
10401: $path_part .= '/';
10402: my $path_and_file = $path_part.$file_part;
10403: if ($path_part ne $path) {
10404: push(@return_files, ($path_and_file));
10405: }
10406: }
10407: close(OUT);
10408: return (@return_files);
10409: }
10410:
10411: #------------------------------Submitted/Handedback Portfolio Files Versioning
10412:
10413: sub portfiles_versioning {
10414: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10415: my $portfolio_root = '/userfiles/portfolio';
10416: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10417: foreach my $file (@{$portfiles}) {
10418: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10419: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10420: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10421: my $getpropath = 1;
10422: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10423: $stu_name,$getpropath);
10424: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10425: my $new_answer =
10426: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10427: if ($new_answer ne 'problem getting file') {
10428: push(@{$versioned_portfiles}, $directory.$new_answer);
10429: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10430: [$symb,$env{'request.course.id'},'graded']);
10431: }
10432: }
10433: }
10434:
10435: sub get_next_version {
10436: my ($answer_name, $answer_ext, $dir_list) = @_;
10437: my $version;
10438: if (ref($dir_list) eq 'ARRAY') {
10439: foreach my $row (@{$dir_list}) {
10440: my ($file) = split(/\&/,$row,2);
10441: my ($file_name,$file_version,$file_ext) =
10442: &file_name_version_ext($file);
10443: if (($file_name eq $answer_name) &&
10444: ($file_ext eq $answer_ext)) {
10445: # gets here if filename and extension match,
10446: # regardless of version
10447: if ($file_version ne '') {
10448: # a versioned file is found so save it for later
10449: if ($file_version > $version) {
10450: $version = $file_version;
10451: }
10452: }
10453: }
10454: }
10455: }
10456: $version ++;
10457: return($version);
10458: }
10459:
10460: sub version_selected_portfile {
10461: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10462: my ($answer_name,$answer_ver,$answer_ext) =
10463: &file_name_version_ext($file_name);
10464: my $new_answer;
10465: $env{'form.copy'} =
10466: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10467: if($env{'form.copy'} eq '-1') {
10468: $new_answer = 'problem getting file';
10469: } else {
10470: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10471: my $copy_result =
10472: &finishuserfileupload($stu_name,$domain,'copy',
10473: '/portfolio'.$directory.$new_answer);
10474: }
10475: undef($env{'form.copy'});
10476: return ($new_answer);
10477: }
10478:
10479: sub file_name_version_ext {
10480: my ($file)=@_;
10481: my @file_parts = split(/\./, $file);
10482: my ($name,$version,$ext);
10483: if (@file_parts > 1) {
10484: $ext=pop(@file_parts);
10485: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10486: $version=pop(@file_parts);
10487: }
10488: $name=join('.',@file_parts);
10489: } else {
10490: $name=join('.',@file_parts);
10491: }
10492: return($name,$version,$ext);
10493: }
10494:
10495: #----------------------------------------------Get portfolio file permissions
10496:
10497: sub get_portfile_permissions {
10498: my ($domain,$user) = @_;
10499: my %current_permissions = &dump('file_permissions',$domain,$user);
10500: my ($tmp)=keys(%current_permissions);
10501: if ($tmp=~/^error:/) { undef(%current_permissions); }
10502: return \%current_permissions;
10503: }
10504:
10505: #---------------------------------------------Get portfolio file access controls
10506:
10507: sub get_access_controls {
10508: my ($current_permissions,$group,$file) = @_;
10509: my %access;
10510: my $real_file = $file;
10511: $file =~ s/\.meta$//;
10512: if (defined($file)) {
10513: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10514: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10515: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10516: }
10517: }
10518: } else {
10519: foreach my $key (keys(%{$current_permissions})) {
10520: if ($key =~ /\0accesscontrol$/) {
10521: if (defined($group)) {
10522: if ($key !~ m-^\Q$group\E/-) {
10523: next;
10524: }
10525: }
10526: my ($fullpath) = split(/\0/,$key);
10527: if (ref($$current_permissions{$key}) eq 'HASH') {
10528: foreach my $control (keys(%{$$current_permissions{$key}})) {
10529: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10530: }
10531: }
10532: }
10533: }
10534: }
10535: return %access;
10536: }
10537:
10538: sub modify_access_controls {
10539: my ($file_name,$changes,$domain,$user)=@_;
10540: my ($outcome,$deloutcome);
10541: my %store_permissions;
10542: my %new_values;
10543: my %new_control;
10544: my %translation;
10545: my @deletions = ();
10546: my $now = time;
10547: if (exists($$changes{'activate'})) {
10548: if (ref($$changes{'activate'}) eq 'HASH') {
10549: my @newitems = sort(keys(%{$$changes{'activate'}}));
10550: my $numnew = scalar(@newitems);
10551: for (my $i=0; $i<$numnew; $i++) {
10552: my $newkey = $newitems[$i];
10553: my $newid = &Apache::loncommon::get_cgi_id();
10554: if ($newkey =~ /^\d+:/) {
10555: $newkey =~ s/^(\d+)/$newid/;
10556: $translation{$1} = $newid;
10557: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10558: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10559: $translation{$1} = $newid;
10560: }
10561: $new_values{$file_name."\0".$newkey} =
10562: $$changes{'activate'}{$newitems[$i]};
10563: $new_control{$newkey} = $now;
10564: }
10565: }
10566: }
10567: my %todelete;
10568: my %changed_items;
10569: foreach my $action ('delete','update') {
10570: if (exists($$changes{$action})) {
10571: if (ref($$changes{$action}) eq 'HASH') {
10572: foreach my $key (keys(%{$$changes{$action}})) {
10573: my ($itemnum) = ($key =~ /^([^:]+):/);
10574: if ($action eq 'delete') {
10575: $todelete{$itemnum} = 1;
10576: } else {
10577: $changed_items{$itemnum} = $key;
10578: }
10579: }
10580: }
10581: }
10582: }
10583: # get lock on access controls for file.
10584: my $lockhash = {
10585: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10586: ':'.$env{'user.domain'},
10587: };
10588: my $tries = 0;
10589: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10590:
10591: while (($gotlock ne 'ok') && $tries < 10) {
10592: $tries ++;
10593: sleep(0.1);
10594: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10595: }
10596: if ($gotlock eq 'ok') {
10597: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10598: my ($tmp)=keys(%curr_permissions);
10599: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10600: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10601: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10602: if (ref($curr_controls) eq 'HASH') {
10603: foreach my $control_item (keys(%{$curr_controls})) {
10604: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10605: if (defined($todelete{$itemnum})) {
10606: push(@deletions,$file_name."\0".$control_item);
10607: } else {
10608: if (defined($changed_items{$itemnum})) {
10609: $new_control{$changed_items{$itemnum}} = $now;
10610: push(@deletions,$file_name."\0".$control_item);
10611: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10612: } else {
10613: $new_control{$control_item} = $$curr_controls{$control_item};
10614: }
10615: }
10616: }
10617: }
10618: }
10619: my ($group);
10620: if (&is_course($domain,$user)) {
10621: ($group,my $file) = split(/\//,$file_name,2);
10622: }
10623: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10624: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10625: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10626: # remove lock
10627: my @del_lock = ($file_name."\0".'locked_access_records');
10628: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10629: my $sqlresult =
10630: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10631: $group);
10632: } else {
10633: $outcome = "error: could not obtain lockfile\n";
10634: }
10635: return ($outcome,$deloutcome,\%new_values,\%translation);
10636: }
10637:
10638: sub make_public_indefinitely {
10639: my (@requrl) = @_;
10640: return &automated_portfile_access('public',\@requrl);
10641: }
10642:
10643: sub automated_portfile_access {
10644: my ($accesstype,$addsref,$delsref,$info) = @_;
10645: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10646: return 'invalid';
10647: }
10648: my %urls;
10649: if (ref($addsref) eq 'ARRAY') {
10650: foreach my $requrl (@{$addsref}) {
10651: if (&is_portfolio_url($requrl)) {
10652: unless (exists($urls{$requrl})) {
10653: $urls{$requrl} = 'add';
10654: }
10655: }
10656: }
10657: }
10658: if (ref($delsref) eq 'ARRAY') {
10659: foreach my $requrl (@{$delsref}) {
10660: if (&is_portfolio_url($requrl)) {
10661: unless (exists($urls{$requrl})) {
10662: $urls{$requrl} = 'delete';
10663: }
10664: }
10665: }
10666: }
10667: unless (keys(%urls)) {
10668: return 'invalid';
10669: }
10670: my $ip;
10671: if ($accesstype eq 'ip') {
10672: if (ref($info) eq 'HASH') {
10673: if ($info->{'ip'} ne '') {
10674: $ip = $info->{'ip'};
10675: }
10676: }
10677: if ($ip eq '') {
10678: return 'invalid';
10679: }
10680: }
10681: my $errors;
10682: my $now = time;
10683: my %current_perms;
10684: foreach my $requrl (sort(keys(%urls))) {
10685: my $action;
10686: if ($urls{$requrl} eq 'add') {
10687: $action = 'activate';
10688: } else {
10689: $action = 'none';
10690: }
10691: my $aclnum = 0;
10692: my (undef,$udom,$unum,$file_name,$group) =
10693: &parse_portfolio_url($requrl);
10694: unless (exists($current_perms{$unum.':'.$udom})) {
10695: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10696: }
10697: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10698: $group,$file_name);
10699: foreach my $key (keys(%{$access_controls{$file_name}})) {
10700: my ($num,$scope,$end,$start) =
10701: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10702: if ($scope eq $accesstype) {
10703: if (($start <= $now) && ($end == 0)) {
10704: if ($accesstype eq 'ip') {
10705: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10706: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10707: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10708: if ($urls{$requrl} eq 'add') {
10709: $action = 'none';
10710: last;
10711: } else {
10712: $action = 'delete';
10713: $aclnum = $num;
10714: last;
10715: }
10716: }
10717: }
10718: }
10719: } elsif ($accesstype eq 'public') {
10720: if ($urls{$requrl} eq 'add') {
10721: $action = 'none';
10722: last;
10723: } else {
10724: $action = 'delete';
10725: $aclnum = $num;
10726: last;
10727: }
10728: }
10729: } elsif ($accesstype eq 'public') {
10730: $action = 'update';
10731: $aclnum = $num;
10732: last;
10733: }
10734: }
10735: }
10736: if ($action eq 'none') {
10737: next;
10738: } else {
10739: my %changes;
10740: my $newend = 0;
10741: my $newstart = $now;
10742: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10743: $changes{$action}{$newkey} = {
10744: type => $accesstype,
10745: time => {
10746: start => $newstart,
10747: end => $newend,
10748: },
10749: };
10750: if ($accesstype eq 'ip') {
10751: $changes{$action}{$newkey}{'ip'} = [$ip];
10752: }
10753: my ($outcome,$deloutcome,$new_values,$translation) =
10754: &modify_access_controls($file_name,\%changes,$udom,$unum);
10755: unless ($outcome eq 'ok') {
10756: $errors .= $outcome.' ';
10757: }
10758: }
10759: }
10760: if ($errors) {
10761: $errors =~ s/\s$//;
10762: return $errors;
10763: } else {
10764: return 'ok';
10765: }
10766: }
10767:
10768: #------------------------------------------------------Get Marked as Read Only
10769:
10770: sub get_marked_as_readonly {
10771: my ($domain,$user,$what,$group) = @_;
10772: my $current_permissions = &get_portfile_permissions($domain,$user);
10773: my @readonly_files;
10774: my $cmp1=$what;
10775: if (ref($what)) { $cmp1=join('',@{$what}) };
10776: while (my ($file_name,$value) = each(%{$current_permissions})) {
10777: if (defined($group)) {
10778: if ($file_name !~ m-^\Q$group\E/-) {
10779: next;
10780: }
10781: }
10782: if (ref($value) eq "ARRAY"){
10783: foreach my $stored_what (@{$value}) {
10784: my $cmp2=$stored_what;
10785: if (ref($stored_what) eq 'ARRAY') {
10786: $cmp2=join('',@{$stored_what});
10787: }
10788: if ($cmp1 eq $cmp2) {
10789: push(@readonly_files, $file_name);
10790: last;
10791: } elsif (!defined($what)) {
10792: push(@readonly_files, $file_name);
10793: last;
10794: }
10795: }
10796: }
10797: }
10798: return @readonly_files;
10799: }
10800: #-----------------------------------------------------------Get Marked as Read Only Hash
10801:
10802: sub get_marked_as_readonly_hash {
10803: my ($current_permissions,$group,$what) = @_;
10804: my %readonly_files;
10805: while (my ($file_name,$value) = each(%{$current_permissions})) {
10806: if (defined($group)) {
10807: if ($file_name !~ m-^\Q$group\E/-) {
10808: next;
10809: }
10810: }
10811: if (ref($value) eq "ARRAY"){
10812: foreach my $stored_what (@{$value}) {
10813: if (ref($stored_what) eq 'ARRAY') {
10814: foreach my $lock_descriptor(@{$stored_what}) {
10815: if ($lock_descriptor eq 'graded') {
10816: $readonly_files{$file_name} = 'graded';
10817: } elsif ($lock_descriptor eq 'handback') {
10818: $readonly_files{$file_name} = 'handback';
10819: } else {
10820: if (!exists($readonly_files{$file_name})) {
10821: $readonly_files{$file_name} = 'locked';
10822: }
10823: }
10824: }
10825: }
10826: }
10827: }
10828: }
10829: return %readonly_files;
10830: }
10831: # ------------------------------------------------------------ Unmark as Read Only
10832:
10833: sub unmark_as_readonly {
10834: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10835: # for portfolio submissions, $what contains [$symb,$crsid]
10836: my ($domain,$user,$what,$file_name,$group) = @_;
10837: $file_name = &declutter_portfile($file_name);
10838: my $symb_crs = $what;
10839: if (ref($what)) { $symb_crs=join('',@$what); }
10840: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10841: my ($tmp)=keys(%current_permissions);
10842: if ($tmp=~/^error:/) { undef(%current_permissions); }
10843: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10844: foreach my $file (@readonly_files) {
10845: my $clean_file = &declutter_portfile($file);
10846: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10847: my $current_locks = $current_permissions{$file};
10848: my @new_locks;
10849: my @del_keys;
10850: if (ref($current_locks) eq "ARRAY"){
10851: foreach my $locker (@{$current_locks}) {
10852: my $compare=$locker;
10853: if (ref($locker) eq 'ARRAY') {
10854: $compare=join('',@{$locker});
10855: if ($compare ne $symb_crs) {
10856: push(@new_locks, $locker);
10857: }
10858: }
10859: }
10860: if (scalar(@new_locks) > 0) {
10861: $current_permissions{$file} = \@new_locks;
10862: } else {
10863: push(@del_keys, $file);
10864: &del('file_permissions',\@del_keys, $domain, $user);
10865: delete($current_permissions{$file});
10866: }
10867: }
10868: }
10869: &put('file_permissions',\%current_permissions,$domain,$user);
10870: return;
10871: }
10872:
10873: # ------------------------------------------------------------ Directory lister
10874:
10875: sub dirlist {
10876: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10877: $uri=~s/^\///;
10878: $uri=~s/\/$//;
10879: my ($udom, $uname);
10880: if ($getuserdir) {
10881: $udom = $userdomain;
10882: $uname = $username;
10883: } else {
10884: (undef,$udom,$uname)=split(/\//,$uri);
10885: if(defined($userdomain)) {
10886: $udom = $userdomain;
10887: }
10888: if(defined($username)) {
10889: $uname = $username;
10890: }
10891: }
10892: my ($dirRoot,$listing,@listing_results);
10893:
10894: $dirRoot = $perlvar{'lonDocRoot'};
10895: if (defined($getpropath)) {
10896: $dirRoot = &propath($udom,$uname);
10897: $dirRoot =~ s/\/$//;
10898: } elsif (defined($getuserdir)) {
10899: my $subdir=$uname.'__';
10900: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10901: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10902: ."/$udom/$subdir/$uname";
10903: } elsif (defined($alternateRoot)) {
10904: $dirRoot = $alternateRoot;
10905: }
10906:
10907: if($udom) {
10908: if($uname) {
10909: my $uhome = &homeserver($uname,$udom);
10910: if ($uhome eq 'no_host') {
10911: return ([],'no_host');
10912: }
10913: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10914: .$getuserdir.':'.&escape($dirRoot)
10915: .':'.&escape($uname).':'.&escape($udom),$uhome);
10916: if ($listing eq 'unknown_cmd') {
10917: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10918: } else {
10919: @listing_results = map { &unescape($_); } split(/:/,$listing);
10920: }
10921: if ($listing eq 'unknown_cmd') {
10922: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10923: @listing_results = split(/:/,$listing);
10924: } else {
10925: @listing_results = map { &unescape($_); } split(/:/,$listing);
10926: }
10927: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10928: ($listing eq 'rejected') || ($listing eq 'refused') ||
10929: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10930: return ([],$listing);
10931: } else {
10932: return (\@listing_results);
10933: }
10934: } elsif(!$alternateRoot) {
10935: my (%allusers,%listerror);
10936: my %servers = &get_servers($udom,'library');
10937: foreach my $tryserver (keys(%servers)) {
10938: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10939: &escape($udom),$tryserver);
10940: if ($listing eq 'unknown_cmd') {
10941: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10942: $udom, $tryserver);
10943: } else {
10944: @listing_results = map { &unescape($_); } split(/:/,$listing);
10945: }
10946: if ($listing eq 'unknown_cmd') {
10947: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10948: $udom, $tryserver);
10949: @listing_results = split(/:/,$listing);
10950: } else {
10951: @listing_results =
10952: map { &unescape($_); } split(/:/,$listing);
10953: }
10954: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10955: ($listing eq 'rejected') || ($listing eq 'refused') ||
10956: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10957: $listerror{$tryserver} = $listing;
10958: } else {
10959: foreach my $line (@listing_results) {
10960: my ($entry) = split(/&/,$line,2);
10961: $allusers{$entry} = 1;
10962: }
10963: }
10964: }
10965: my @alluserslist=();
10966: foreach my $user (sort(keys(%allusers))) {
10967: push(@alluserslist,$user.'&user');
10968: }
10969:
10970: if (!%listerror) {
10971: # no errors
10972: return (\@alluserslist);
10973: } elsif (scalar(keys(%servers)) == 1) {
10974: # one library server, one error
10975: my ($key) = keys(%listerror);
10976: return (\@alluserslist, $listerror{$key});
10977: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10978: # con_lost indicates that we might miss data from at least one
10979: # library server
10980: return (\@alluserslist, 'con_lost');
10981: } else {
10982: # multiple library servers and no con_lost -> data should be
10983: # complete.
10984: return (\@alluserslist);
10985: }
10986:
10987: } else {
10988: return ([],'missing username');
10989: }
10990: } elsif(!defined($getpropath)) {
10991: my $path = $perlvar{'lonDocRoot'}.'/res/';
10992: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10993: return (\@all_domains);
10994: } else {
10995: return ([],'missing domain');
10996: }
10997: }
10998:
10999: # --------------------------------------------- GetFileTimestamp
11000: # This function utilizes dirlist and returns the date stamp for
11001: # when it was last modified. It will also return an error of -1
11002: # if an error occurs
11003:
11004: sub GetFileTimestamp {
11005: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11006: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11007: $studentName = &LONCAPA::clean_username($studentName);
11008: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11009: undef,$getuserdir);
11010: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11011: return -1;
11012: }
11013: if (ref($fileref) eq 'ARRAY') {
11014: my @stats = split('&',$fileref->[0]);
11015: # @stats contains first the filename, then the stat output
11016: return $stats[10]; # so this is 10 instead of 9.
11017: } else {
11018: return -1;
11019: }
11020: }
11021:
11022: sub stat_file {
11023: my ($uri) = @_;
11024: $uri = &clutter_with_no_wrapper($uri);
11025:
11026: my ($udom,$uname,$file);
11027: if ($uri =~ m-^/(uploaded|editupload)/-) {
11028: ($udom,$uname,$file) =
11029: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11030: $file = 'userfiles/'.$file;
11031: }
11032: if ($uri =~ m-^/res/-) {
11033: ($udom,$uname) =
11034: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11035: $file = $uri;
11036: }
11037:
11038: if (!$udom || !$uname || !$file) {
11039: # unable to handle the uri
11040: return ();
11041: }
11042: my $getpropath;
11043: if ($file =~ /^userfiles\//) {
11044: $getpropath = 1;
11045: }
11046: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11047: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11048: return ();
11049: } else {
11050: if (ref($listref) eq 'ARRAY') {
11051: my @stats = split('&',$listref->[0]);
11052: shift(@stats); #filename is first
11053: return @stats;
11054: }
11055: }
11056: return ();
11057: }
11058:
11059: # --------------------------------------------------------- recursedirs
11060: # Recursive function to traverse either a specific user's Authoring Space
11061: # or corresponding Published Resource Space, and populate the hash ref:
11062: # $dirhashref with URLs of all directories, and if $filehashref hash
11063: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11064: # or .rights files in resource space, and .meta, .save, .log, and .bak
11065: # files in Authoring Space.
11066: #
11067: # Inputs:
11068: #
11069: # $is_home - true if current server is home server for user's space
11070: # $context - either: priv, or res respectively for Authoring or Resource Space.
11071: # $docroot - Document root (i.e., /home/httpd/html
11072: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11073: # $relpath - Current path (relative to top level).
11074: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11075: # $filehashref - reference to hash to populate with URLs of files (Optional)
11076: #
11077: # Returns: nothing
11078: #
11079: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11080: #
11081: # Currently used by interface/londocs.pm to create linked select boxes for
11082: # directory and filename to import a Course "Author" resource into a course, and
11083: # also to create linked select boxes for Authoring Space and Directory to choose
11084: # save location for creation of a new "standard" problem from the Course Editor.
11085: #
11086:
11087: sub recursedirs {
11088: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11089: return unless (ref($dirhashref) eq 'HASH');
11090: my $currpath = $docroot.$toppath;
11091: if ($relpath) {
11092: $currpath .= "/$relpath";
11093: }
11094: my $savefile;
11095: if (ref($filehashref)) {
11096: $savefile = 1;
11097: }
11098: if ($is_home) {
11099: if (opendir(my $dirh,$currpath)) {
11100: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11101: next if ($item eq '');
11102: if (-d "$currpath/$item") {
11103: my $newpath;
11104: if ($relpath) {
11105: $newpath = "$relpath/$item";
11106: } else {
11107: $newpath = $item;
11108: }
11109: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11110: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11111: } elsif ($savefile) {
11112: if ($context eq 'priv') {
11113: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11114: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11115: }
11116: } else {
11117: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11118: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11119: }
11120: }
11121: }
11122: }
11123: closedir($dirh);
11124: }
11125: } else {
11126: my ($dirlistref,$listerror) =
11127: &dirlist($toppath.$relpath);
11128: my @dir_lines;
11129: my $dirptr=16384;
11130: if (ref($dirlistref) eq 'ARRAY') {
11131: foreach my $dir_line (sort
11132: {
11133: my ($afile)=split('&',$a,2);
11134: my ($bfile)=split('&',$b,2);
11135: return (lc($afile) cmp lc($bfile));
11136: } (@{$dirlistref})) {
11137: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11138: split(/\&/,$dir_line,16);
11139: $item =~ s/\s+$//;
11140: next if (($item =~ /^\.\.?$/) || ($obs));
11141: if ($dirptr&$testdir) {
11142: my $newpath;
11143: if ($relpath) {
11144: $newpath = "$relpath/$item";
11145: } else {
11146: $relpath = '/';
11147: $newpath = $item;
11148: }
11149: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11150: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11151: } elsif ($savefile) {
11152: if ($context eq 'priv') {
11153: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11154: $filehashref->{$relpath}{$item} = 1;
11155: }
11156: } else {
11157: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11158: $filehashref->{$relpath}{$item} = 1;
11159: }
11160: }
11161: }
11162: }
11163: }
11164: }
11165: return;
11166: }
11167:
11168: # -------------------------------------------------------- Value of a Condition
11169:
11170: # gets the value of a specific preevaluated condition
11171: # stored in the string $env{user.state.<cid>}
11172: # or looks up a condition reference in the bighash and if if hasn't
11173: # already been evaluated recurses into docondval to get the value of
11174: # the condition, then memoizing it to
11175: # $env{user.state.<cid>.<condition>}
11176: sub directcondval {
11177: my $number=shift;
11178: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11179: &Apache::lonuserstate::evalstate();
11180: }
11181: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11182: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11183: } elsif ($number =~ /^_/) {
11184: my $sub_condition;
11185: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11186: &GDBM_READER(),0640)) {
11187: $sub_condition=$bighash{'conditions'.$number};
11188: untie(%bighash);
11189: }
11190: my $value = &docondval($sub_condition);
11191: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11192: return $value;
11193: }
11194: if ($env{'user.state.'.$env{'request.course.id'}}) {
11195: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11196: } else {
11197: return 2;
11198: }
11199: }
11200:
11201: # get the collection of conditions for this resource
11202: sub condval {
11203: my $condidx=shift;
11204: my $allpathcond='';
11205: foreach my $cond (split(/\|/,$condidx)) {
11206: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11207: $allpathcond.=
11208: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11209: }
11210: }
11211: $allpathcond=~s/\|$//;
11212: return &docondval($allpathcond);
11213: }
11214:
11215: #evaluates an expression of conditions
11216: sub docondval {
11217: my ($allpathcond) = @_;
11218: my $result=0;
11219: if ($env{'request.course.id'}
11220: && defined($allpathcond)) {
11221: my $operand='|';
11222: my @stack;
11223: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11224: if ($chunk eq '(') {
11225: push @stack,($operand,$result);
11226: } elsif ($chunk eq ')') {
11227: my $before=pop @stack;
11228: if (pop @stack eq '&') {
11229: $result=$result>$before?$before:$result;
11230: } else {
11231: $result=$result>$before?$result:$before;
11232: }
11233: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11234: $operand=$chunk;
11235: } else {
11236: my $new=directcondval($chunk);
11237: if ($operand eq '&') {
11238: $result=$result>$new?$new:$result;
11239: } else {
11240: $result=$result>$new?$result:$new;
11241: }
11242: }
11243: }
11244: }
11245: return $result;
11246: }
11247:
11248: # ---------------------------------------------------- Devalidate courseresdata
11249:
11250: sub devalidatecourseresdata {
11251: my ($coursenum,$coursedomain)=@_;
11252: my $hashid=$coursenum.':'.$coursedomain;
11253: &devalidate_cache_new('courseres',$hashid);
11254: }
11255:
11256:
11257: # --------------------------------------------------- Course Resourcedata Query
11258: #
11259: # Parameters:
11260: # $coursenum - Number of the course.
11261: # $coursedomain - Domain at which the course was created.
11262: # Returns:
11263: # A hash of the course parameters along (I think) with timestamps
11264: # and version info.
11265:
11266: sub get_courseresdata {
11267: my ($coursenum,$coursedomain)=@_;
11268: my $coursehom=&homeserver($coursenum,$coursedomain);
11269: my $hashid=$coursenum.':'.$coursedomain;
11270: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11271: my %dumpreply;
11272: unless (defined($cached)) {
11273: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11274: $result=\%dumpreply;
11275: my ($tmp) = keys(%dumpreply);
11276: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11277: &do_cache_new('courseres',$hashid,$result,600);
11278: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11279: return $tmp;
11280: } elsif ($tmp =~ /^(error)/) {
11281: $result=undef;
11282: &do_cache_new('courseres',$hashid,$result,600);
11283: }
11284: }
11285: return $result;
11286: }
11287:
11288: sub devalidateuserresdata {
11289: my ($uname,$udom)=@_;
11290: my $hashid="$udom:$uname";
11291: &devalidate_cache_new('userres',$hashid);
11292: }
11293:
11294: sub get_userresdata {
11295: my ($uname,$udom)=@_;
11296: #most student don\'t have any data set, check if there is some data
11297: if (&EXT_cache_status($udom,$uname)) { return undef; }
11298:
11299: my $hashid="$udom:$uname";
11300: my ($result,$cached)=&is_cached_new('userres',$hashid);
11301: if (!defined($cached)) {
11302: my %resourcedata=&dump('resourcedata',$udom,$uname);
11303: $result=\%resourcedata;
11304: &do_cache_new('userres',$hashid,$result,600);
11305: }
11306: my ($tmp)=keys(%$result);
11307: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11308: return $result;
11309: }
11310: #error 2 occurs when the .db doesn't exist
11311: if ($tmp!~/error: 2 /) {
11312: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11313: &logthis("<font color=\"blue\">WARNING:".
11314: " Trying to get resource data for ".
11315: $uname." at ".$udom.": ".
11316: $tmp."</font>");
11317: }
11318: } elsif ($tmp=~/error: 2 /) {
11319: #&EXT_cache_set($udom,$uname);
11320: &do_cache_new('userres',$hashid,undef,600);
11321: undef($tmp); # not really an error so don't send it back
11322: }
11323: return $tmp;
11324: }
11325: #----------------------------------------------- resdata - return resource data
11326: # Purpose:
11327: # Return resource data for either users or for a course.
11328: # Parameters:
11329: # $name - Course/user name.
11330: # $domain - Name of the domain the user/course is registered on.
11331: # $type - Type of thing $name is (must be 'course' or 'user')
11332: # $mapp - decluttered URL of enclosing map
11333: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11334: # $recurseup - Ref to array of map URLs, starting with map containing
11335: # $mapp up through hierarchy of nested maps to top level map.
11336: # $courseid - CourseID (first part of param identifier).
11337: # $modifier - Middle part of param identifier.
11338: # $what - Last part of param identifier.
11339: # @which - Array of names of resources desired.
11340: # Returns:
11341: # The value of the first reasource in @which that is found in the
11342: # resource hash.
11343: # Exceptional Conditions:
11344: # If the $type passed in is not valid (not the string 'course' or
11345: # 'user', an undefined reference is returned.
11346: # If none of the resources are found, an undef is returned
11347: sub resdata {
11348: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11349: $modifier,$what,@which)=@_;
11350: my $result;
11351: if ($type eq 'course') {
11352: $result=&get_courseresdata($name,$domain);
11353: } elsif ($type eq 'user') {
11354: $result=&get_userresdata($name,$domain);
11355: }
11356: if (!ref($result)) { return $result; }
11357: foreach my $item (@which) {
11358: if ($item->[1] eq 'course') {
11359: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11360: unless ($$recursed) {
11361: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11362: $$recursed = 1;
11363: }
11364: foreach my $item (@${recurseup}) {
11365: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11366: last if (defined($result->{$norecursechk}));
11367: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11368: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11369: }
11370: }
11371: }
11372: if (defined($result->{$item->[0]})) {
11373: return [$result->{$item->[0]},$item->[1]];
11374: }
11375: }
11376: return undef;
11377: }
11378:
11379: sub get_domain_lti {
11380: my ($cdom,$context) = @_;
11381: my ($name,%lti);
11382: if ($context eq 'consumer') {
11383: $name = 'ltitools';
11384: } elsif ($context eq 'provider') {
11385: $name = 'lti';
11386: } else {
11387: return %lti;
11388: }
11389: my ($result,$cached)=&is_cached_new($name,$cdom);
11390: if (defined($cached)) {
11391: if (ref($result) eq 'HASH') {
11392: %lti = %{$result};
11393: }
11394: } else {
11395: my %domconfig = &get_dom('configuration',[$name],$cdom);
11396: if (ref($domconfig{$name}) eq 'HASH') {
11397: %lti = %{$domconfig{$name}};
11398: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11399: if (ref($encdomconfig{$name}) eq 'HASH') {
11400: foreach my $id (keys(%lti)) {
11401: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11402: foreach my $item ('key','secret') {
11403: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11404: }
11405: }
11406: }
11407: }
11408: }
11409: my $cachetime = 24*60*60;
11410: &do_cache_new($name,$cdom,\%lti,$cachetime);
11411: }
11412: return %lti;
11413: }
11414:
11415: sub get_numsuppfiles {
11416: my ($cnum,$cdom,$ignorecache)=@_;
11417: my $hashid=$cnum.':'.$cdom;
11418: my ($suppcount,$cached);
11419: unless ($ignorecache) {
11420: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11421: }
11422: unless (defined($cached)) {
11423: my $chome=&homeserver($cnum,$cdom);
11424: unless ($chome eq 'no_host') {
11425: ($suppcount,my $supptools,my $errors) = (0,0,0);
11426: my $suppmap = 'supplemental.sequence';
11427: ($suppcount,$supptools,$errors) =
11428: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11429: $supptools,$errors);
11430: }
11431: &do_cache_new('suppcount',$hashid,$suppcount,600);
11432: }
11433: return $suppcount;
11434: }
11435:
11436: #
11437: # EXT resource caching routines
11438: #
11439:
11440: {
11441: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11442: #
11443: # The course for which we cache
11444: my $cachedmapkey='';
11445: # The cached recursive maps for this course
11446: my %cachedmaps=();
11447: # When this was last done
11448: my $cachedmaptime='';
11449:
11450: sub clear_EXT_cache_status {
11451: &delenv('cache.EXT.');
11452: }
11453:
11454: sub EXT_cache_status {
11455: my ($target_domain,$target_user) = @_;
11456: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11457: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11458: # We know already the user has no data
11459: return 1;
11460: } else {
11461: return 0;
11462: }
11463: }
11464:
11465: sub EXT_cache_set {
11466: my ($target_domain,$target_user) = @_;
11467: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11468: #&appenv({$cachename => time});
11469: }
11470:
11471: # --------------------------------------------------------- Value of a Variable
11472: sub EXT {
11473:
11474: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11475: unless ($varname) { return ''; }
11476: #get real user name/domain, courseid and symb
11477: my $courseid;
11478: my $publicuser;
11479: if ($symbparm) {
11480: $symbparm=&get_symb_from_alias($symbparm);
11481: }
11482: if (!($uname && $udom)) {
11483: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11484: if (!$symbparm) { $symbparm=$cursymb; }
11485: } else {
11486: $courseid=$env{'request.course.id'};
11487: }
11488: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11489: my $rest;
11490: if (defined($therest[0])) {
11491: $rest=join('.',@therest);
11492: } else {
11493: $rest='';
11494: }
11495:
11496: my $qualifierrest=$qualifier;
11497: if ($rest) { $qualifierrest.='.'.$rest; }
11498: my $spacequalifierrest=$space;
11499: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11500: if ($realm eq 'user') {
11501: # --------------------------------------------------------------- user.resource
11502: if ($space eq 'resource') {
11503: if ( (defined($Apache::lonhomework::parsing_a_problem)
11504: || defined($Apache::lonhomework::parsing_a_task))
11505: &&
11506: ($symbparm eq &symbread()) ) {
11507: # if we are in the middle of processing the resource the
11508: # get the value we are planning on committing
11509: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11510: return $Apache::lonhomework::results{$qualifierrest};
11511: } else {
11512: return $Apache::lonhomework::history{$qualifierrest};
11513: }
11514: } else {
11515: my %restored;
11516: if ($publicuser || $env{'request.state'} eq 'construct') {
11517: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11518: } else {
11519: %restored=&restore($symbparm,$courseid,$udom,$uname);
11520: }
11521: return $restored{$qualifierrest};
11522: }
11523: # ----------------------------------------------------------------- user.access
11524: } elsif ($space eq 'access') {
11525: # FIXME - not supporting calls for a specific user
11526: return &allowed($qualifier,$rest);
11527: # ------------------------------------------ user.preferences, user.environment
11528: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11529: if (($uname eq $env{'user.name'}) &&
11530: ($udom eq $env{'user.domain'})) {
11531: return $env{join('.',('environment',$qualifierrest))};
11532: } else {
11533: my %returnhash;
11534: if (!$publicuser) {
11535: %returnhash=&userenvironment($udom,$uname,
11536: $qualifierrest);
11537: }
11538: return $returnhash{$qualifierrest};
11539: }
11540: # ----------------------------------------------------------------- user.course
11541: } elsif ($space eq 'course') {
11542: # FIXME - not supporting calls for a specific user
11543: return $env{join('.',('request.course',$qualifier))};
11544: # ------------------------------------------------------------------- user.role
11545: } elsif ($space eq 'role') {
11546: # FIXME - not supporting calls for a specific user
11547: my ($role,$where)=split(/\./,$env{'request.role'});
11548: if ($qualifier eq 'value') {
11549: return $role;
11550: } elsif ($qualifier eq 'extent') {
11551: return $where;
11552: }
11553: # ----------------------------------------------------------------- user.domain
11554: } elsif ($space eq 'domain') {
11555: return $udom;
11556: # ------------------------------------------------------------------- user.name
11557: } elsif ($space eq 'name') {
11558: return $uname;
11559: # ---------------------------------------------------- Any other user namespace
11560: } else {
11561: my %reply;
11562: if (!$publicuser) {
11563: %reply=&get($space,[$qualifierrest],$udom,$uname);
11564: }
11565: return $reply{$qualifierrest};
11566: }
11567: } elsif ($realm eq 'query') {
11568: # ---------------------------------------------- pull stuff out of query string
11569: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11570: [$spacequalifierrest]);
11571: return $env{'form.'.$spacequalifierrest};
11572: } elsif ($realm eq 'request') {
11573: # ------------------------------------------------------------- request.browser
11574: if ($space eq 'browser') {
11575: return $env{'browser.'.$qualifier};
11576: # ------------------------------------------------------------ request.filename
11577: } else {
11578: return $env{'request.'.$spacequalifierrest};
11579: }
11580: } elsif ($realm eq 'course') {
11581: # ---------------------------------------------------------- course.description
11582: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11583: } elsif ($realm eq 'resource') {
11584:
11585: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11586: if (!$symbparm) { $symbparm=&symbread(); }
11587: }
11588:
11589: if ($qualifier eq '') {
11590: if ($space eq 'title') {
11591: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11592: return &gettitle($symbparm);
11593: }
11594:
11595: if ($space eq 'map') {
11596: my ($map) = &decode_symb($symbparm);
11597: return &symbread($map);
11598: }
11599: if ($space eq 'maptitle') {
11600: my ($map) = &decode_symb($symbparm);
11601: return &gettitle($map);
11602: }
11603: if ($space eq 'filename') {
11604: if ($symbparm) {
11605: return &clutter((&decode_symb($symbparm))[2]);
11606: }
11607: return &hreflocation('',$env{'request.filename'});
11608: }
11609:
11610: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11611: if ($space eq 'visibleparts') {
11612: my $navmap = Apache::lonnavmaps::navmap->new();
11613: my $item;
11614: if (ref($navmap)) {
11615: my $res = $navmap->getBySymb($symbparm);
11616: my $parts = $res->parts();
11617: if (ref($parts) eq 'ARRAY') {
11618: $item = join(',',@{$parts});
11619: }
11620: undef($navmap);
11621: }
11622: return $item;
11623: }
11624: }
11625: }
11626:
11627: my ($section, $group, @groups, @recurseup, $recursed);
11628: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11629: if (($courseid eq '') && ($cid)) {
11630: $courseid = $cid;
11631: }
11632: if (($symbparm && $courseid) &&
11633: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11634:
11635: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11636:
11637: # ----------------------------------------------------- Cascading lookup scheme
11638: my $symbp=$symbparm;
11639: $mapp=&deversion((&decode_symb($symbp))[0]);
11640: my $symbparm=$symbp.'.'.$spacequalifierrest;
11641: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11642: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11643: if (($env{'user.name'} eq $uname) &&
11644: ($env{'user.domain'} eq $udom)) {
11645: $section=$env{'request.course.sec'};
11646: @groups = split(/:/,$env{'request.course.groups'});
11647: @groups=&sort_course_groups($courseid,@groups);
11648: } else {
11649: if (! defined($usection)) {
11650: $section=&getsection($udom,$uname,$courseid);
11651: } else {
11652: $section = $usection;
11653: }
11654: @groups = &get_users_groups($udom,$uname,$courseid);
11655: }
11656:
11657: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11658: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11659: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11660: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11661:
11662: $courselevel=$courseid.'.'.$spacequalifierrest;
11663: my $courselevelr=$courseid.'.'.$symbparm;
11664: $courseleveli=$courseid.'.'.$recurseparm;
11665: $courselevelm=$courseid.'.'.$mapparm;
11666:
11667: # ----------------------------------------------------------- first, check user
11668:
11669: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11670: \@recurseup,$courseid,'.',$spacequalifierrest,
11671: ([$courselevelr,'resource'],
11672: [$courselevelm,'map' ],
11673: [$courseleveli,'map' ],
11674: [$courselevel, 'course' ]));
11675: if (defined($userreply)) { return &get_reply($userreply); }
11676:
11677: # ------------------------------------------------ second, check some of course
11678: my $coursereply;
11679: if (@groups > 0) {
11680: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11681: $recurseparm,$mapparm,$spacequalifierrest,
11682: $mapp,\$recursed,\@recurseup);
11683: if (defined($coursereply)) { return &get_reply($coursereply); }
11684: }
11685:
11686: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11687: $env{'course.'.$courseid.'.domain'},
11688: 'course',$mapp,\$recursed,\@recurseup,
11689: $courseid,'.['.$section.'].',$spacequalifierrest,
11690: ([$seclevelr, 'resource'],
11691: [$seclevelm, 'map' ],
11692: [$secleveli, 'map' ],
11693: [$seclevel, 'course' ],
11694: [$courselevelr,'resource']));
11695: if (defined($coursereply)) { return &get_reply($coursereply); }
11696:
11697: # ------------------------------------------------------ third, check map parms
11698: my %parmhash=();
11699: my $thisparm='';
11700: if (tie(%parmhash,'GDBM_File',
11701: $env{'request.course.fn'}.'_parms.db',
11702: &GDBM_READER(),0640)) {
11703: $thisparm=$parmhash{$symbparm};
11704: untie(%parmhash);
11705: }
11706: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11707: }
11708: # ------------------------------------------ fourth, look in resource metadata
11709:
11710: my $what = $spacequalifierrest;
11711: $what=~s/\./\_/;
11712: my $filename;
11713: if (!$symbparm) { $symbparm=&symbread(); }
11714: if ($symbparm) {
11715: $filename=(&decode_symb($symbparm))[2];
11716: } else {
11717: $filename=$env{'request.filename'};
11718: }
11719: my $toolsymb;
11720: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11721: $toolsymb = $symbparm;
11722: }
11723: my $metadata=&metadata($filename,$what,$toolsymb);
11724: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11725: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11726: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11727:
11728: # ----------------------------------------------- fifth, look in rest of course
11729: if ($symbparm && defined($courseid) &&
11730: $courseid eq $env{'request.course.id'}) {
11731: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11732: $env{'course.'.$courseid.'.domain'},
11733: 'course',$mapp,\$recursed,\@recurseup,
11734: $courseid,'.',$spacequalifierrest,
11735: ([$courselevelm,'map' ],
11736: [$courseleveli,'map' ],
11737: [$courselevel, 'course']));
11738: if (defined($coursereply)) { return &get_reply($coursereply); }
11739: }
11740: # ------------------------------------------------------------------ Cascade up
11741: unless ($space eq '0') {
11742: my @parts=split(/_/,$space);
11743: my $id=pop(@parts);
11744: my $part=join('_',@parts);
11745: if ($part eq '') { $part='0'; }
11746: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11747: $symbparm,$udom,$uname,$section,1);
11748: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11749: }
11750: if ($recurse) { return undef; }
11751: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11752: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11753: # ---------------------------------------------------- Any other user namespace
11754: } elsif ($realm eq 'environment') {
11755: # ----------------------------------------------------------------- environment
11756: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11757: return $env{'environment.'.$spacequalifierrest};
11758: } else {
11759: if ($uname eq 'anonymous' && $udom eq '') {
11760: return '';
11761: }
11762: my %returnhash=&userenvironment($udom,$uname,
11763: $spacequalifierrest);
11764: return $returnhash{$spacequalifierrest};
11765: }
11766: } elsif ($realm eq 'system') {
11767: # ----------------------------------------------------------------- system.time
11768: if ($space eq 'time') {
11769: return time;
11770: }
11771: } elsif ($realm eq 'server') {
11772: # ----------------------------------------------------------------- system.time
11773: if ($space eq 'name') {
11774: return $ENV{'SERVER_NAME'};
11775: }
11776: }
11777: return '';
11778: }
11779:
11780: sub get_reply {
11781: my ($reply_value) = @_;
11782: if (ref($reply_value) eq 'ARRAY') {
11783: if (wantarray) {
11784: return @$reply_value;
11785: }
11786: return $reply_value->[0];
11787: } else {
11788: return $reply_value;
11789: }
11790: }
11791:
11792: sub check_group_parms {
11793: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11794: $recursed,$recurseupref) = @_;
11795: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11796: [$what,'course']);
11797: my $coursereply;
11798: foreach my $group (@{$groups}) {
11799: my @groupitems = ();
11800: foreach my $level (@levels) {
11801: my $item = $courseid.'.['.$group.'].'.$level->[0];
11802: push(@groupitems,[$item,$level->[1]]);
11803: }
11804: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11805: $env{'course.'.$courseid.'.domain'},
11806: 'course',$mapp,$recursed,$recurseupref,
11807: $courseid,'.['.$group.'].',$what,
11808: @groupitems);
11809: last if (defined($coursereply));
11810: }
11811: return $coursereply;
11812: }
11813:
11814: sub get_map_hierarchy {
11815: my ($mapname,$courseid) = @_;
11816: my @recurseup = ();
11817: if ($mapname) {
11818: if (($cachedmapkey eq $courseid) &&
11819: (abs($cachedmaptime-time)<5)) {
11820: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11821: return @{$cachedmaps{$mapname}};
11822: }
11823: }
11824: my $navmap = Apache::lonnavmaps::navmap->new();
11825: if (ref($navmap)) {
11826: @recurseup = $navmap->recurseup_maps($mapname);
11827: undef($navmap);
11828: $cachedmaps{$mapname} = \@recurseup;
11829: $cachedmaptime=time;
11830: $cachedmapkey=$courseid;
11831: }
11832: }
11833: return @recurseup;
11834: }
11835:
11836: }
11837:
11838: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11839: my ($courseid,@groups) = @_;
11840: @groups = sort(@groups);
11841: return @groups;
11842: }
11843:
11844: sub packages_tab_default {
11845: my ($uri,$varname,$toolsymb)=@_;
11846: my (undef,$part,$name)=split(/\./,$varname);
11847:
11848: my (@extension,@specifics,$do_default);
11849: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11850: my ($pack_type,$pack_part)=split(/_/,$package,2);
11851: if ($pack_type eq 'default') {
11852: $do_default=1;
11853: } elsif ($pack_type eq 'extension') {
11854: push(@extension,[$package,$pack_type,$pack_part]);
11855: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11856: # only look at packages defaults for packages that this id is
11857: push(@specifics,[$package,$pack_type,$pack_part]);
11858: }
11859: }
11860: # first look for a package that matches the requested part id
11861: foreach my $package (@specifics) {
11862: my (undef,$pack_type,$pack_part)=@{$package};
11863: next if ($pack_part ne $part);
11864: if (defined($packagetab{"$pack_type&$name&default"})) {
11865: return $packagetab{"$pack_type&$name&default"};
11866: }
11867: }
11868: # look for any possible matching non extension_ package
11869: foreach my $package (@specifics) {
11870: my (undef,$pack_type,$pack_part)=@{$package};
11871: if (defined($packagetab{"$pack_type&$name&default"})) {
11872: return $packagetab{"$pack_type&$name&default"};
11873: }
11874: if ($pack_type eq 'part') { $pack_part='0'; }
11875: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11876: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11877: }
11878: }
11879: # look for any posible extension_ match
11880: foreach my $package (@extension) {
11881: my ($package,$pack_type)=@{$package};
11882: if (defined($packagetab{"$pack_type&$name&default"})) {
11883: return $packagetab{"$pack_type&$name&default"};
11884: }
11885: if (defined($packagetab{$package."&$name&default"})) {
11886: return $packagetab{$package."&$name&default"};
11887: }
11888: }
11889: # look for a global default setting
11890: if ($do_default && defined($packagetab{"default&$name&default"})) {
11891: return $packagetab{"default&$name&default"};
11892: }
11893: return undef;
11894: }
11895:
11896: sub add_prefix_and_part {
11897: my ($prefix,$part)=@_;
11898: my $keyroot;
11899: if (defined($prefix) && $prefix !~ /^__/) {
11900: # prefix that has a part already
11901: $keyroot=$prefix;
11902: } elsif (defined($prefix)) {
11903: # prefix that is missing a part
11904: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11905: } else {
11906: # no prefix at all
11907: if (defined($part)) { $keyroot='_'.$part; }
11908: }
11909: return $keyroot;
11910: }
11911:
11912: # ---------------------------------------------------------------- Get metadata
11913:
11914: my %metaentry;
11915: my %importedpartids;
11916: my %importedrespids;
11917: sub metadata {
11918: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11919: $uri=&declutter($uri);
11920: # if it is a non metadata possible uri return quickly
11921: if (($uri eq '') ||
11922: (($uri =~ m|^/*adm/|) &&
11923: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11924: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11925: return undef;
11926: }
11927: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11928: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11929: return undef;
11930: }
11931: my $filename=$uri;
11932: $uri=~s/\.meta$//;
11933: #
11934: # Is the metadata already cached?
11935: # Look at timestamp of caching
11936: # Everything is cached by the main uri, libraries are never directly cached
11937: #
11938: if (!defined($liburi)) {
11939: my ($result,$cached)=&is_cached_new('meta',$uri);
11940: if (defined($cached)) { return $result->{':'.$what}; }
11941: }
11942:
11943: #
11944: # If the uri is for an external tool the file from
11945: # which metadata should be retrieved depends on whether
11946: # the tool had been configured to be gradable (set in the Course
11947: # Editor or Resource Editor).
11948: #
11949: # If a valid symb has been included as the third arg in the call
11950: # to &metadata() that can be used to retrieve the value of
11951: # parameter_0_gradable set for the resource, and included in the
11952: # uploaded map containing the tool. The value is retrieved via
11953: # &EXT(), if a valid symb is available. Otherwise the value of
11954: # gradable in the exttool_$marker.db file for the tool instance
11955: # is retrieved via &get().
11956: #
11957: # When lonuserstate::traceroute() calls lonnet::EXT() for
11958: # hiddenresource and encrypturl (during course initialization)
11959: # the map-level parameter for resource.0.gradable included in the
11960: # uploaded map containing the tool will not yet have been stored
11961: # in the user_course_parms.db file for the user's session, so in
11962: # this case fall back to retrieving gradable status from the
11963: # exttool_$marker.db file.
11964: #
11965: # In order to avoid an infinite loop, &metadata() will return
11966: # before a call to &EXT(), if the uri is for an external tool
11967: # and the $what for which metadata is being requested is
11968: # parameter_0_gradable or 0_gradable.
11969: #
11970:
11971: if ($uri =~ /ext\.tool$/) {
11972: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11973: return;
11974: } else {
11975: my ($checked,$use_passback);
11976: if ($toolsymb ne '') {
11977: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11978: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11979: $checked = 1;
11980: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11981: $use_passback = 1;
11982: }
11983: }
11984: }
11985: unless ($checked) {
11986: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11987: $marker=~s/\D//g;
11988: if ($marker) {
11989: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11990: $use_passback = $toolsettings{'gradable'};
11991: }
11992: }
11993: if ($use_passback) {
11994: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11995: } else {
11996: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11997: }
11998: }
11999: }
12000:
12001: {
12002: # Imported parts would go here
12003: my @origfiletagids=();
12004: my $importedparts=0;
12005:
12006: # Imported responseids would go here
12007: my $importedresponses=0;
12008: #
12009: # Is this a recursive call for a library?
12010: #
12011: # if (! exists($metacache{$uri})) {
12012: # $metacache{$uri}={};
12013: # }
12014: my $cachetime = 60*60;
12015: if ($liburi) {
12016: $liburi=&declutter($liburi);
12017: $filename=$liburi;
12018: } else {
12019: &devalidate_cache_new('meta',$uri);
12020: undef(%metaentry);
12021: }
12022: my %metathesekeys=();
12023: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12024: my $metastring;
12025: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12026: my $which = &hreflocation('','/'.($liburi || $uri));
12027: $metastring =
12028: &Apache::lonnet::ssi_body($which,
12029: ('grade_target' => 'meta'));
12030: $cachetime = 1; # only want this cached in the child not long term
12031: } elsif (($uri !~ m -^(editupload)/-) &&
12032: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12033: my $file=&filelocation('',&clutter($filename));
12034: #push(@{$metaentry{$uri.'.file'}},$file);
12035: $metastring=&getfile($file);
12036: }
12037: my $parser=HTML::LCParser->new(\$metastring);
12038: my $token;
12039: undef %metathesekeys;
12040: while ($token=$parser->get_token) {
12041: if ($token->[0] eq 'S') {
12042: if (defined($token->[2]->{'package'})) {
12043: #
12044: # This is a package - get package info
12045: #
12046: my $package=$token->[2]->{'package'};
12047: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12048: if (defined($token->[2]->{'id'})) {
12049: $keyroot.='_'.$token->[2]->{'id'};
12050: }
12051: if ($metaentry{':packages'}) {
12052: $metaentry{':packages'}.=','.$package.$keyroot;
12053: } else {
12054: $metaentry{':packages'}=$package.$keyroot;
12055: }
12056: foreach my $pack_entry (keys(%packagetab)) {
12057: my $part=$keyroot;
12058: $part=~s/^\_//;
12059: if ($pack_entry=~/^\Q$package\E\&/ ||
12060: $pack_entry=~/^\Q$package\E_0\&/) {
12061: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12062: # ignore package.tab specified default values
12063: # here &package_tab_default() will fetch those
12064: if ($subp eq 'default') { next; }
12065: my $value=$packagetab{$pack_entry};
12066: my $unikey;
12067: if ($pack =~ /_0$/) {
12068: $unikey='parameter_0_'.$name;
12069: $part=0;
12070: } else {
12071: $unikey='parameter'.$keyroot.'_'.$name;
12072: }
12073: if ($subp eq 'display') {
12074: $value.=' [Part: '.$part.']';
12075: }
12076: $metaentry{':'.$unikey.'.part'}=$part;
12077: $metathesekeys{$unikey}=1;
12078: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12079: $metaentry{':'.$unikey.'.'.$subp}=$value;
12080: }
12081: if (defined($metaentry{':'.$unikey.'.default'})) {
12082: $metaentry{':'.$unikey}=
12083: $metaentry{':'.$unikey.'.default'};
12084: }
12085: }
12086: }
12087: } else {
12088: #
12089: # This is not a package - some other kind of start tag
12090: #
12091: my $entry=$token->[1];
12092: my $unikey='';
12093:
12094: if ($entry eq 'import') {
12095: #
12096: # Importing a library here
12097: #
12098: my $location=$parser->get_text('/import');
12099: my $dir=$filename;
12100: $dir=~s|[^/]*$||;
12101: $location=&filelocation($dir,$location);
12102:
12103: my $importid=$token->[2]->{'id'};
12104: my $importmode=$token->[2]->{'importmode'};
12105: #
12106: # Check metadata for imported file to
12107: # see if it contained response items
12108: #
12109: my ($origfile,@libfilekeys);
12110: my %currmetaentry = %metaentry;
12111: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12112: $depthcount+1));
12113: if (grep(/^responseorder$/,@libfilekeys)) {
12114: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12115: undef,$depthcount+1);
12116: if ($libresponseorder ne '') {
12117: if ($#origfiletagids<0) {
12118: undef(%importedrespids);
12119: undef(%importedpartids);
12120: }
12121: my @respids = split(/\s*,\s*/,$libresponseorder);
12122: if (@respids) {
12123: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12124: }
12125: if ($importedrespids{$importid} ne '') {
12126: $importedresponses = 1;
12127: # We need to get the original file and the imported file to get the response order correct
12128: # Load and inspect original file
12129: if ($#origfiletagids<0) {
12130: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12131: $origfile=&getfile($origfilelocation);
12132: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12133: }
12134: }
12135: }
12136: }
12137: # Do not overwrite contents of %metaentry hash for resource itself with
12138: # hash populated for imported library file
12139: %metaentry = %currmetaentry;
12140: undef(%currmetaentry);
12141: if ($importmode eq 'part') {
12142: # Import as part(s)
12143: $importedparts=1;
12144: # We need to get the original file and the imported file to get the part order correct
12145: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12146: # Load and inspect original file if we didn't do that already
12147: if ($#origfiletagids<0) {
12148: undef(%importedrespids);
12149: undef(%importedpartids);
12150: if ($origfile eq '') {
12151: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12152: $origfile=&getfile($origfilelocation);
12153: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12154: }
12155: }
12156: my @impfilepartids;
12157: # If <partorder> tag is included in metadata for the imported file
12158: # get the parts in the imported file from that.
12159: if (grep(/^partorder$/,@libfilekeys)) {
12160: %currmetaentry = %metaentry;
12161: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12162: $depthcount+1);
12163: %metaentry = %currmetaentry;
12164: undef(%currmetaentry);
12165: if ($libpartorder ne '') {
12166: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12167: }
12168: } else {
12169: # If no <partorder> tag available, load and inspect imported file
12170: my $impfile=&getfile($location);
12171: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12172: }
12173: if ($#impfilepartids>=0) {
12174: # This problem had parts
12175: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12176: } else {
12177: # Importing by turning a single problem into a problem part
12178: # It gets the import-tags ID as part-ID
12179: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12180: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12181: }
12182: } else {
12183: # Import as problem or as normal import
12184: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12185: unless ($importmode eq 'problem') {
12186: # Normal import
12187: if (defined($token->[2]->{'id'})) {
12188: $unikey.='_'.$token->[2]->{'id'};
12189: }
12190: }
12191: # Check metadata for imported file to
12192: # see if it contained parts
12193: if (grep(/^partorder$/,@libfilekeys)) {
12194: %currmetaentry = %metaentry;
12195: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12196: $depthcount+1);
12197: %metaentry = %currmetaentry;
12198: undef(%currmetaentry);
12199: if ($libpartorder ne '') {
12200: $importedparts = 1;
12201: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12202: }
12203: }
12204: }
12205: if ($depthcount<20) {
12206: my $metadata =
12207: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12208: $depthcount+1);
12209: foreach my $meta (split(',',$metadata)) {
12210: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12211: $metathesekeys{$meta}=1;
12212: }
12213: }
12214: } else {
12215: #
12216: # Not importing, some other kind of non-package, non-library start tag
12217: #
12218: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12219: if (defined($token->[2]->{'id'})) {
12220: $unikey.='_'.$token->[2]->{'id'};
12221: }
12222: if (defined($token->[2]->{'name'})) {
12223: $unikey.='_'.$token->[2]->{'name'};
12224: }
12225: $metathesekeys{$unikey}=1;
12226: foreach my $param (@{$token->[3]}) {
12227: $metaentry{':'.$unikey.'.'.$param} =
12228: $token->[2]->{$param};
12229: }
12230: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12231: my $default=$metaentry{':'.$unikey.'.default'};
12232: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12233: # only ws inside the tag, and not in default, so use default
12234: # as value
12235: $metaentry{':'.$unikey}=$default;
12236: } elsif ( $internaltext =~ /\S/ ) {
12237: # something interesting inside the tag
12238: $metaentry{':'.$unikey}=$internaltext;
12239: } else {
12240: # no interesting values, don't set a default
12241: }
12242: # end of not-a-package not-a-library import
12243: }
12244: # end of not-a-package start tag
12245: }
12246: # the next is the end of "start tag"
12247: }
12248: }
12249: my ($extension) = ($uri =~ /\.(\w+)$/);
12250: $extension = lc($extension);
12251: if ($extension eq 'htm') { $extension='html'; }
12252:
12253: foreach my $key (keys(%packagetab)) {
12254: #no specific packages #how's our extension
12255: if ($key!~/^extension_\Q$extension\E&/) { next; }
12256: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12257: \%metathesekeys);
12258: }
12259:
12260: if (!exists($metaentry{':packages'})
12261: || $packagetab{"import_defaults&extension_$extension"}) {
12262: foreach my $key (keys(%packagetab)) {
12263: #no specific packages well let's get default then
12264: if ($key!~/^default&/) { next; }
12265: &metadata_create_package_def($uri,$key,'default',
12266: \%metathesekeys);
12267: }
12268: }
12269: # are there custom rights to evaluate
12270: if ($metaentry{':copyright'} eq 'custom') {
12271:
12272: #
12273: # Importing a rights file here
12274: #
12275: unless ($depthcount) {
12276: my $location=$metaentry{':customdistributionfile'};
12277: my $dir=$filename;
12278: $dir=~s|[^/]*$||;
12279: $location=&filelocation($dir,$location);
12280: my $rights_metadata =
12281: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12282: $depthcount+1);
12283: foreach my $rights (split(',',$rights_metadata)) {
12284: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12285: $metathesekeys{$rights}=1;
12286: }
12287: }
12288: }
12289: # uniqifiy package listing
12290: my %seen;
12291: my @uniq_packages =
12292: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12293: $metaentry{':packages'} = join(',',@uniq_packages);
12294:
12295: if (($importedresponses) || ($importedparts)) {
12296: if ($importedparts) {
12297: # We had imported parts and need to rebuild partorder
12298: $metaentry{':partorder'}='';
12299: $metathesekeys{'partorder'}=1;
12300: }
12301: if ($importedresponses) {
12302: # We had imported responses and need to rebuil responseorder
12303: $metaentry{':responseorder'}='';
12304: $metathesekeys{'responseorder'}=1;
12305: }
12306: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12307: my $origid = $origfiletagids[$index+1];
12308: if ($origfiletagids[$index] eq 'part') {
12309: # Original part, part of the problem
12310: if ($importedparts) {
12311: $metaentry{':partorder'}.=','.$origid;
12312: }
12313: } elsif ($origfiletagids[$index] eq 'import') {
12314: if ($importedparts) {
12315: # We have imported parts at this position
12316: if ($importedpartids{$origid} ne '') {
12317: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12318: }
12319: }
12320: if ($importedresponses) {
12321: # We have imported responses at this position
12322: if ($importedrespids{$origid} ne '') {
12323: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12324: }
12325: }
12326: } else {
12327: # Original response item, part of the problem
12328: if ($importedresponses) {
12329: $metaentry{':responseorder'}.=','.$origid;
12330: }
12331: }
12332: }
12333: if ($importedparts) {
12334: $metaentry{':partorder'}=~s/^\,//;
12335: }
12336: if ($importedresponses) {
12337: $metaentry{':responseorder'}=~s/^\,//;
12338: }
12339: }
12340: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12341: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12342: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12343: unless ($liburi) {
12344: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12345: }
12346: # this is the end of "was not already recently cached
12347: }
12348: return $metaentry{':'.$what};
12349: }
12350:
12351: sub metadata_create_package_def {
12352: my ($uri,$key,$package,$metathesekeys)=@_;
12353: my ($pack,$name,$subp)=split(/\&/,$key);
12354: if ($subp eq 'default') { next; }
12355:
12356: if (defined($metaentry{':packages'})) {
12357: $metaentry{':packages'}.=','.$package;
12358: } else {
12359: $metaentry{':packages'}=$package;
12360: }
12361: my $value=$packagetab{$key};
12362: my $unikey;
12363: $unikey='parameter_0_'.$name;
12364: $metaentry{':'.$unikey.'.part'}=0;
12365: $$metathesekeys{$unikey}=1;
12366: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12367: $metaentry{':'.$unikey.'.'.$subp}=$value;
12368: }
12369: if (defined($metaentry{':'.$unikey.'.default'})) {
12370: $metaentry{':'.$unikey}=
12371: $metaentry{':'.$unikey.'.default'};
12372: }
12373: }
12374:
12375: sub metadata_generate_part0 {
12376: my ($metadata,$metacache,$uri) = @_;
12377: my %allnames;
12378: foreach my $metakey (keys(%$metadata)) {
12379: if ($metakey=~/^parameter\_(.*)/) {
12380: my $part=$$metacache{':'.$metakey.'.part'};
12381: my $name=$$metacache{':'.$metakey.'.name'};
12382: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12383: $allnames{$name}=$part;
12384: }
12385: }
12386: }
12387: foreach my $name (keys(%allnames)) {
12388: $$metadata{"parameter_0_$name"}=1;
12389: my $key=":parameter_0_$name";
12390: $$metacache{"$key.part"}='0';
12391: $$metacache{"$key.name"}=$name;
12392: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12393: $allnames{$name}.'_'.$name.
12394: '.type'};
12395: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12396: '.display'};
12397: my $expr='[Part: '.$allnames{$name}.']';
12398: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12399: $$metacache{"$key.display"}=$olddis;
12400: }
12401: }
12402:
12403: # ------------------------------------------------------ Devalidate title cache
12404:
12405: sub devalidate_title_cache {
12406: my ($url)=@_;
12407: if (!$env{'request.course.id'}) { return; }
12408: my $symb=&symbread($url);
12409: if (!$symb) { return; }
12410: my $key=$env{'request.course.id'}."\0".$symb;
12411: &devalidate_cache_new('title',$key);
12412: }
12413:
12414: # ------------------------------------------------- Get the title of a course
12415:
12416: sub current_course_title {
12417: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12418: }
12419: # ------------------------------------------------- Get the title of a resource
12420:
12421: sub gettitle {
12422: my $urlsymb=shift;
12423: my $symb=&symbread($urlsymb);
12424: if ($symb) {
12425: my $key=$env{'request.course.id'}."\0".$symb;
12426: my ($result,$cached)=&is_cached_new('title',$key);
12427: if (defined($cached)) {
12428: return $result;
12429: }
12430: my ($map,$resid,$url)=&decode_symb($symb);
12431: my $title='';
12432: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12433: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12434: } else {
12435: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12436: &GDBM_READER(),0640)) {
12437: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12438: $title=$bighash{'title_'.$mapid.'.'.$resid};
12439: untie(%bighash);
12440: }
12441: }
12442: $title=~s/\&colon\;/\:/gs;
12443: if ($title) {
12444: # Remember both $symb and $title for dynamic metadata
12445: $accesshash{$symb.'___crstitle'}=$title;
12446: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12447: # Cache this title and then return it
12448: return &do_cache_new('title',$key,$title,600);
12449: }
12450: $urlsymb=$url;
12451: }
12452: my $title=&metadata($urlsymb,'title');
12453: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12454: return $title;
12455: }
12456:
12457: sub get_slot {
12458: my ($which,$cnum,$cdom)=@_;
12459: if (!$cnum || !$cdom) {
12460: (undef,my $courseid)=&whichuser();
12461: $cdom=$env{'course.'.$courseid.'.domain'};
12462: $cnum=$env{'course.'.$courseid.'.num'};
12463: }
12464: my $key=join("\0",'slots',$cdom,$cnum,$which);
12465: my %slotinfo;
12466: if (exists($remembered{$key})) {
12467: $slotinfo{$which} = $remembered{$key};
12468: } else {
12469: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12470: &Apache::lonhomework::showhash(%slotinfo);
12471: my ($tmp)=keys(%slotinfo);
12472: if ($tmp=~/^error:/) { return (); }
12473: $remembered{$key} = $slotinfo{$which};
12474: }
12475: if (ref($slotinfo{$which}) eq 'HASH') {
12476: return %{$slotinfo{$which}};
12477: }
12478: return $slotinfo{$which};
12479: }
12480:
12481: sub get_reservable_slots {
12482: my ($cnum,$cdom,$uname,$udom) = @_;
12483: my $now = time;
12484: my $reservable_info;
12485: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12486: if (exists($remembered{$key})) {
12487: $reservable_info = $remembered{$key};
12488: } else {
12489: my %resv;
12490: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12491: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12492: $reservable_info = \%resv;
12493: $remembered{$key} = $reservable_info;
12494: }
12495: return $reservable_info;
12496: }
12497:
12498: sub get_course_slots {
12499: my ($cnum,$cdom) = @_;
12500: my $hashid=$cnum.':'.$cdom;
12501: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12502: if (defined($cached)) {
12503: if (ref($result) eq 'HASH') {
12504: return %{$result};
12505: }
12506: } else {
12507: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12508: my ($tmp) = keys(%slots);
12509: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12510: &do_cache_new('allslots',$hashid,\%slots,600);
12511: return %slots;
12512: }
12513: }
12514: return;
12515: }
12516:
12517: sub devalidate_slots_cache {
12518: my ($cnum,$cdom)=@_;
12519: my $hashid=$cnum.':'.$cdom;
12520: &devalidate_cache_new('allslots',$hashid);
12521: }
12522:
12523: sub get_coursechange {
12524: my ($cdom,$cnum) = @_;
12525: if ($cdom eq '' || $cnum eq '') {
12526: return unless ($env{'request.course.id'});
12527: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12528: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12529: }
12530: my $hashid=$cdom.'_'.$cnum;
12531: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12532: if ((defined($cached)) && ($change ne '')) {
12533: return $change;
12534: } else {
12535: my %crshash;
12536: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12537: if ($crshash{'internal.contentchange'} eq '') {
12538: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12539: if ($change eq '') {
12540: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12541: $change = $crshash{'internal.created'};
12542: }
12543: } else {
12544: $change = $crshash{'internal.contentchange'};
12545: }
12546: my $cachetime = 600;
12547: &do_cache_new('crschange',$hashid,$change,$cachetime);
12548: }
12549: return $change;
12550: }
12551:
12552: sub devalidate_coursechange_cache {
12553: my ($cnum,$cdom)=@_;
12554: my $hashid=$cnum.':'.$cdom;
12555: &devalidate_cache_new('crschange',$hashid);
12556: }
12557:
12558: # ------------------------------------------------- Update symbolic store links
12559:
12560: sub symblist {
12561: my ($mapname,%newhash)=@_;
12562: $mapname=&deversion(&declutter($mapname));
12563: my %hash;
12564: if (($env{'request.course.fn'}) && (%newhash)) {
12565: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12566: &GDBM_WRCREAT(),0640)) {
12567: foreach my $url (keys(%newhash)) {
12568: next if ($url eq 'last_known'
12569: && $env{'form.no_update_last_known'});
12570: $hash{declutter($url)}=&encode_symb($mapname,
12571: $newhash{$url}->[1],
12572: $newhash{$url}->[0]);
12573: }
12574: if (untie(%hash)) {
12575: return 'ok';
12576: }
12577: }
12578: }
12579: return 'error';
12580: }
12581:
12582: # --------------------------------------------------------------- Verify a symb
12583:
12584: sub symbverify {
12585: my ($symb,$thisurl,$encstate)=@_;
12586: my $thisfn=$thisurl;
12587: $thisfn=&declutter($thisfn);
12588: # direct jump to resource in page or to a sequence - will construct own symbs
12589: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12590: # check URL part
12591: my ($map,$resid,$url)=&decode_symb($symb);
12592:
12593: unless ($url eq $thisfn) { return 0; }
12594:
12595: $symb=&symbclean($symb);
12596: $thisurl=&deversion($thisurl);
12597: $thisfn=&deversion($thisfn);
12598:
12599: my %bighash;
12600: my $okay=0;
12601:
12602: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12603: &GDBM_READER(),0640)) {
12604: my $noclutter;
12605: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12606: $thisurl =~ s/\?.+$//;
12607: if ($map =~ m{^uploaded/.+\.page$}) {
12608: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12609: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12610: $noclutter = 1;
12611: }
12612: }
12613: my $ids;
12614: if ($noclutter) {
12615: $ids=$bighash{'ids_'.$thisurl};
12616: } else {
12617: $ids=$bighash{'ids_'.&clutter($thisurl)};
12618: }
12619: unless ($ids) {
12620: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12621: $ids=$bighash{$idkey};
12622: }
12623: if ($ids) {
12624: # ------------------------------------------------------------------- Has ID(s)
12625: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12626: $symb =~ s/\?.+$//;
12627: }
12628: foreach my $id (split(/\,/,$ids)) {
12629: my ($mapid,$resid)=split(/\./,$id);
12630: if (
12631: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12632: eq $symb) {
12633: if (ref($encstate)) {
12634: $$encstate = $bighash{'encrypted_'.$id};
12635: }
12636: if (($env{'request.role.adv'}) ||
12637: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12638: ($thisurl eq '/adm/navmaps')) {
12639: $okay=1;
12640: last;
12641: }
12642: }
12643: }
12644: }
12645: untie(%bighash);
12646: }
12647: return $okay;
12648: }
12649:
12650: # --------------------------------------------------------------- Clean-up symb
12651:
12652: sub symbclean {
12653: my $symb=shift;
12654: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12655: # remove version from map
12656: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12657:
12658: # remove version from URL
12659: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12660:
12661: # remove wrapper
12662:
12663: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12664: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12665: return $symb;
12666: }
12667:
12668: # ---------------------------------------------- Split symb to find map and url
12669:
12670: sub encode_symb {
12671: my ($map,$resid,$url)=@_;
12672: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12673: }
12674:
12675: sub decode_symb {
12676: my $symb=shift;
12677: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12678: my ($map,$resid,$url)=split(/___/,$symb);
12679: return (&fixversion($map),$resid,&fixversion($url));
12680: }
12681:
12682: sub fixversion {
12683: my $fn=shift;
12684: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12685: my %bighash;
12686: my $uri=&clutter($fn);
12687: my $key=$env{'request.course.id'}.'_'.$uri;
12688: # is this cached?
12689: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12690: if (defined($cached)) { return $result; }
12691: # unfortunately not cached, or expired
12692: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12693: &GDBM_READER(),0640)) {
12694: if ($bighash{'version_'.$uri}) {
12695: my $version=$bighash{'version_'.$uri};
12696: unless (($version eq 'mostrecent') ||
12697: ($version==&getversion($uri))) {
12698: $uri=~s/\.(\w+)$/\.$version\.$1/;
12699: }
12700: }
12701: untie %bighash;
12702: }
12703: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12704: }
12705:
12706: sub deversion {
12707: my $url=shift;
12708: $url=~s/\.\d+\.(\w+)$/\.$1/;
12709: return $url;
12710: }
12711:
12712: # ------------------------------------------------------ Return symb list entry
12713:
12714: sub symbread {
12715: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12716: my $cache_str='request.symbread.cached.'.$thisfn;
12717: if (defined($env{$cache_str})) {
12718: if ($ignorecachednull) {
12719: return $env{$cache_str} unless ($env{$cache_str} eq '');
12720: } else {
12721: return $env{$cache_str};
12722: }
12723: }
12724: # no filename provided? try from environment
12725: unless ($thisfn) {
12726: if ($env{'request.symb'}) {
12727: return $env{$cache_str}=&symbclean($env{'request.symb'});
12728: }
12729: $thisfn=$env{'request.filename'};
12730: }
12731: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12732: # is that filename actually a symb? Verify, clean, and return
12733: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12734: if (&symbverify($thisfn,$1)) {
12735: return $env{$cache_str}=&symbclean($thisfn);
12736: }
12737: }
12738: $thisfn=declutter($thisfn);
12739: my %hash;
12740: my %bighash;
12741: my $syval='';
12742: if (($env{'request.course.fn'}) && ($thisfn)) {
12743: my $targetfn = $thisfn;
12744: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12745: $targetfn = 'adm/wrapper/'.$thisfn;
12746: }
12747: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12748: $targetfn=$1;
12749: }
12750: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12751: &GDBM_READER(),0640)) {
12752: $syval=$hash{$targetfn};
12753: untie(%hash);
12754: }
12755: # ---------------------------------------------------------- There was an entry
12756: if ($syval) {
12757: #unless ($syval=~/\_\d+$/) {
12758: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12759: #&appenv({'request.ambiguous' => $thisfn});
12760: #return $env{$cache_str}='';
12761: #}
12762: #$syval.=$1;
12763: #}
12764: } else {
12765: # ------------------------------------------------------- Was not in symb table
12766: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12767: &GDBM_READER(),0640)) {
12768: # ---------------------------------------------- Get ID(s) for current resource
12769: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12770: unless ($ids) {
12771: $ids=$bighash{'ids_/'.$thisfn};
12772: }
12773: unless ($ids) {
12774: # alias?
12775: $ids=$bighash{'mapalias_'.$thisfn};
12776: }
12777: if ($ids) {
12778: # ------------------------------------------------------------------- Has ID(s)
12779: my @possibilities=split(/\,/,$ids);
12780: if ($#possibilities==0) {
12781: # ----------------------------------------------- There is only one possibility
12782: my ($mapid,$resid)=split(/\./,$ids);
12783: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12784: $resid,$thisfn);
12785: if (ref($possibles) eq 'HASH') {
12786: $possibles->{$syval} = 1;
12787: }
12788: if ($checkforblock) {
12789: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12790: if (@blockers) {
12791: $syval = '';
12792: return;
12793: }
12794: }
12795: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12796: # ------------------------------------------ There is more than one possibility
12797: my $realpossible=0;
12798: foreach my $id (@possibilities) {
12799: my $file=$bighash{'src_'.$id};
12800: my $canaccess;
12801: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12802: $canaccess = 1;
12803: } else {
12804: $canaccess = &allowed('bre',$file);
12805: }
12806: if ($canaccess) {
12807: my ($mapid,$resid)=split(/\./,$id);
12808: if ($bighash{'map_type_'.$mapid} ne 'page') {
12809: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12810: $resid,$thisfn);
12811: if (ref($possibles) eq 'HASH') {
12812: $possibles->{$syval} = 1;
12813: }
12814: if ($checkforblock) {
12815: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12816: unless (@blockers > 0) {
12817: $syval = $poss_syval;
12818: $realpossible++;
12819: }
12820: } else {
12821: $syval = $poss_syval;
12822: $realpossible++;
12823: }
12824: }
12825: }
12826: }
12827: if ($realpossible!=1) { $syval=''; }
12828: } else {
12829: $syval='';
12830: }
12831: }
12832: untie(%bighash);
12833: }
12834: }
12835: if ($syval) {
12836: return $env{$cache_str}=$syval;
12837: }
12838: }
12839: &appenv({'request.ambiguous' => $thisfn});
12840: return $env{$cache_str}='';
12841: }
12842:
12843: # ---------------------------------------------------------- Return random seed
12844:
12845: sub numval {
12846: my $txt=shift;
12847: $txt=~tr/A-J/0-9/;
12848: $txt=~tr/a-j/0-9/;
12849: $txt=~tr/K-T/0-9/;
12850: $txt=~tr/k-t/0-9/;
12851: $txt=~tr/U-Z/0-5/;
12852: $txt=~tr/u-z/0-5/;
12853: $txt=~s/\D//g;
12854: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12855: return int($txt);
12856: }
12857:
12858: sub numval2 {
12859: my $txt=shift;
12860: $txt=~tr/A-J/0-9/;
12861: $txt=~tr/a-j/0-9/;
12862: $txt=~tr/K-T/0-9/;
12863: $txt=~tr/k-t/0-9/;
12864: $txt=~tr/U-Z/0-5/;
12865: $txt=~tr/u-z/0-5/;
12866: $txt=~s/\D//g;
12867: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12868: my $total;
12869: foreach my $val (@txts) { $total+=$val; }
12870: if ($_64bit) { if ($total > 2**32) { return -1; } }
12871: return int($total);
12872: }
12873:
12874: sub numval3 {
12875: use integer;
12876: my $txt=shift;
12877: $txt=~tr/A-J/0-9/;
12878: $txt=~tr/a-j/0-9/;
12879: $txt=~tr/K-T/0-9/;
12880: $txt=~tr/k-t/0-9/;
12881: $txt=~tr/U-Z/0-5/;
12882: $txt=~tr/u-z/0-5/;
12883: $txt=~s/\D//g;
12884: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12885: my $total;
12886: foreach my $val (@txts) { $total+=$val; }
12887: if ($_64bit) { $total=(($total<<32)>>32); }
12888: return $total;
12889: }
12890:
12891: sub digest {
12892: my ($data)=@_;
12893: my $digest=&Digest::MD5::md5($data);
12894: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12895: my ($e,$f);
12896: {
12897: use integer;
12898: $e=($a+$b);
12899: $f=($c+$d);
12900: if ($_64bit) {
12901: $e=(($e<<32)>>32);
12902: $f=(($f<<32)>>32);
12903: }
12904: }
12905: if (wantarray) {
12906: return ($e,$f);
12907: } else {
12908: my $g;
12909: {
12910: use integer;
12911: $g=($e+$f);
12912: if ($_64bit) {
12913: $g=(($g<<32)>>32);
12914: }
12915: }
12916: return $g;
12917: }
12918: }
12919:
12920: sub latest_rnd_algorithm_id {
12921: return '64bit5';
12922: }
12923:
12924: sub get_rand_alg {
12925: my ($courseid)=@_;
12926: if (!$courseid) { $courseid=(&whichuser())[1]; }
12927: if ($courseid) {
12928: return $env{"course.$courseid.rndseed"};
12929: }
12930: return &latest_rnd_algorithm_id();
12931: }
12932:
12933: sub validCODE {
12934: my ($CODE)=@_;
12935: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12936: return 0;
12937: }
12938:
12939: sub getCODE {
12940: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12941: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12942: defined($Apache::lonhomework::parsing_a_task) ) &&
12943: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12944: return $Apache::lonhomework::history{'resource.CODE'};
12945: }
12946: return undef;
12947: }
12948: #
12949: # Determines the random seed for a specific context:
12950: #
12951: # parameters:
12952: # symb - in course context the symb for the seed.
12953: # course_id - The course id of the form domain_coursenum.
12954: # domain - Domain for the user.
12955: # course - Course for the user.
12956: # cenv - environment of the course.
12957: #
12958: # NOTE:
12959: # All parameters are picked out of the environment if missing
12960: # or not defined.
12961: # If a symb cannot be determined the current time is used instead.
12962: #
12963: # For a given well defined symb, courside, domain, username,
12964: # and course environment, the seed is reproducible.
12965: #
12966: sub rndseed {
12967: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12968: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12969: if (!defined($symb)) {
12970: unless ($symb=$wsymb) { return time; }
12971: }
12972: if (!defined $courseid) {
12973: $courseid=$wcourseid;
12974: }
12975: if (!defined $domain) { $domain=$wdomain; }
12976: if (!defined $username) { $username=$wusername }
12977:
12978: my $which;
12979: if (defined($cenv->{'rndseed'})) {
12980: $which = $cenv->{'rndseed'};
12981: } else {
12982: $which =&get_rand_alg($courseid);
12983: }
12984: if (defined(&getCODE())) {
12985:
12986: if ($which eq '64bit5') {
12987: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12988: } elsif ($which eq '64bit4') {
12989: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12990: } else {
12991: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12992: }
12993: } elsif ($which eq '64bit5') {
12994: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12995: } elsif ($which eq '64bit4') {
12996: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12997: } elsif ($which eq '64bit3') {
12998: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12999: } elsif ($which eq '64bit2') {
13000: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13001: } elsif ($which eq '64bit') {
13002: return &rndseed_64bit($symb,$courseid,$domain,$username);
13003: }
13004: return &rndseed_32bit($symb,$courseid,$domain,$username);
13005: }
13006:
13007: sub rndseed_32bit {
13008: my ($symb,$courseid,$domain,$username)=@_;
13009: {
13010: use integer;
13011: my $symbchck=unpack("%32C*",$symb) << 27;
13012: my $symbseed=numval($symb) << 22;
13013: my $namechck=unpack("%32C*",$username) << 17;
13014: my $nameseed=numval($username) << 12;
13015: my $domainseed=unpack("%32C*",$domain) << 7;
13016: my $courseseed=unpack("%32C*",$courseid);
13017: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13018: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13019: #&logthis("rndseed :$num:$symb");
13020: if ($_64bit) { $num=(($num<<32)>>32); }
13021: return $num;
13022: }
13023: }
13024:
13025: sub rndseed_64bit {
13026: my ($symb,$courseid,$domain,$username)=@_;
13027: {
13028: use integer;
13029: my $symbchck=unpack("%32S*",$symb) << 21;
13030: my $symbseed=numval($symb) << 10;
13031: my $namechck=unpack("%32S*",$username);
13032:
13033: my $nameseed=numval($username) << 21;
13034: my $domainseed=unpack("%32S*",$domain) << 10;
13035: my $courseseed=unpack("%32S*",$courseid);
13036:
13037: my $num1=$symbchck+$symbseed+$namechck;
13038: my $num2=$nameseed+$domainseed+$courseseed;
13039: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13040: #&logthis("rndseed :$num:$symb");
13041: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13042: return "$num1,$num2";
13043: }
13044: }
13045:
13046: sub rndseed_64bit2 {
13047: my ($symb,$courseid,$domain,$username)=@_;
13048: {
13049: use integer;
13050: # strings need to be an even # of cahracters long, it it is odd the
13051: # last characters gets thrown away
13052: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13053: my $symbseed=numval($symb) << 10;
13054: my $namechck=unpack("%32S*",$username.' ');
13055:
13056: my $nameseed=numval($username) << 21;
13057: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13058: my $courseseed=unpack("%32S*",$courseid.' ');
13059:
13060: my $num1=$symbchck+$symbseed+$namechck;
13061: my $num2=$nameseed+$domainseed+$courseseed;
13062: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13063: #&logthis("rndseed :$num:$symb");
13064: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13065: return "$num1,$num2";
13066: }
13067: }
13068:
13069: sub rndseed_64bit3 {
13070: my ($symb,$courseid,$domain,$username)=@_;
13071: {
13072: use integer;
13073: # strings need to be an even # of cahracters long, it it is odd the
13074: # last characters gets thrown away
13075: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13076: my $symbseed=numval2($symb) << 10;
13077: my $namechck=unpack("%32S*",$username.' ');
13078:
13079: my $nameseed=numval2($username) << 21;
13080: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13081: my $courseseed=unpack("%32S*",$courseid.' ');
13082:
13083: my $num1=$symbchck+$symbseed+$namechck;
13084: my $num2=$nameseed+$domainseed+$courseseed;
13085: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13086: #&logthis("rndseed :$num1:$num2:$_64bit");
13087: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13088:
13089: return "$num1:$num2";
13090: }
13091: }
13092:
13093: sub rndseed_64bit4 {
13094: my ($symb,$courseid,$domain,$username)=@_;
13095: {
13096: use integer;
13097: # strings need to be an even # of cahracters long, it it is odd the
13098: # last characters gets thrown away
13099: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13100: my $symbseed=numval3($symb) << 10;
13101: my $namechck=unpack("%32S*",$username.' ');
13102:
13103: my $nameseed=numval3($username) << 21;
13104: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13105: my $courseseed=unpack("%32S*",$courseid.' ');
13106:
13107: my $num1=$symbchck+$symbseed+$namechck;
13108: my $num2=$nameseed+$domainseed+$courseseed;
13109: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13110: #&logthis("rndseed :$num1:$num2:$_64bit");
13111: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13112:
13113: return "$num1:$num2";
13114: }
13115: }
13116:
13117: sub rndseed_64bit5 {
13118: my ($symb,$courseid,$domain,$username)=@_;
13119: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13120: return "$num1:$num2";
13121: }
13122:
13123: sub rndseed_CODE_64bit {
13124: my ($symb,$courseid,$domain,$username)=@_;
13125: {
13126: use integer;
13127: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13128: my $symbseed=numval2($symb);
13129: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13130: my $CODEseed=numval(&getCODE());
13131: my $courseseed=unpack("%32S*",$courseid.' ');
13132: my $num1=$symbseed+$CODEchck;
13133: my $num2=$CODEseed+$courseseed+$symbchck;
13134: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13135: #&logthis("rndseed :$num1:$num2:$symb");
13136: if ($_64bit) { $num1=(($num1<<32)>>32); }
13137: if ($_64bit) { $num2=(($num2<<32)>>32); }
13138: return "$num1:$num2";
13139: }
13140: }
13141:
13142: sub rndseed_CODE_64bit4 {
13143: my ($symb,$courseid,$domain,$username)=@_;
13144: {
13145: use integer;
13146: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13147: my $symbseed=numval3($symb);
13148: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13149: my $CODEseed=numval3(&getCODE());
13150: my $courseseed=unpack("%32S*",$courseid.' ');
13151: my $num1=$symbseed+$CODEchck;
13152: my $num2=$CODEseed+$courseseed+$symbchck;
13153: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13154: #&logthis("rndseed :$num1:$num2:$symb");
13155: if ($_64bit) { $num1=(($num1<<32)>>32); }
13156: if ($_64bit) { $num2=(($num2<<32)>>32); }
13157: return "$num1:$num2";
13158: }
13159: }
13160:
13161: sub rndseed_CODE_64bit5 {
13162: my ($symb,$courseid,$domain,$username)=@_;
13163: my $code = &getCODE();
13164: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13165: return "$num1:$num2";
13166: }
13167:
13168: sub setup_random_from_rndseed {
13169: my ($rndseed)=@_;
13170: if ($rndseed =~/([,:])/) {
13171: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13172: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13173: &Math::Random::random_set_seed_from_phrase($rndseed);
13174: } else {
13175: &Math::Random::random_set_seed($num1,$num2);
13176: }
13177: } else {
13178: &Math::Random::random_set_seed_from_phrase($rndseed);
13179: }
13180: }
13181:
13182: sub latest_receipt_algorithm_id {
13183: return 'receipt3';
13184: }
13185:
13186: sub recunique {
13187: my $fucourseid=shift;
13188: my $unique;
13189: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13190: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13191: $unique=$env{"course.$fucourseid.internal.encseed"};
13192: } else {
13193: $unique=$perlvar{'lonReceipt'};
13194: }
13195: return unpack("%32C*",$unique);
13196: }
13197:
13198: sub recprefix {
13199: my $fucourseid=shift;
13200: my $prefix;
13201: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13202: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13203: $prefix=$env{"course.$fucourseid.internal.encpref"};
13204: } else {
13205: $prefix=$perlvar{'lonHostID'};
13206: }
13207: return unpack("%32C*",$prefix);
13208: }
13209:
13210: sub ireceipt {
13211: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13212:
13213: my $return =&recprefix($fucourseid).'-';
13214:
13215: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13216: $env{'request.state'} eq 'construct') {
13217: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13218: return $return;
13219: }
13220:
13221: my $cuname=unpack("%32C*",$funame);
13222: my $cudom=unpack("%32C*",$fudom);
13223: my $cucourseid=unpack("%32C*",$fucourseid);
13224: my $cusymb=unpack("%32C*",$fusymb);
13225: my $cunique=&recunique($fucourseid);
13226: my $cpart=unpack("%32S*",$part);
13227: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13228:
13229: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13230:
13231: $return.= ($cunique%$cuname+
13232: $cunique%$cudom+
13233: $cusymb%$cuname+
13234: $cusymb%$cudom+
13235: $cucourseid%$cuname+
13236: $cucourseid%$cudom+
13237: $cpart%$cuname+
13238: $cpart%$cudom);
13239: } else {
13240: $return.= ($cunique%$cuname+
13241: $cunique%$cudom+
13242: $cusymb%$cuname+
13243: $cusymb%$cudom+
13244: $cucourseid%$cuname+
13245: $cucourseid%$cudom);
13246: }
13247: return $return;
13248: }
13249:
13250: sub receipt {
13251: my ($part)=@_;
13252: my ($symb,$courseid,$domain,$name) = &whichuser();
13253: return &ireceipt($name,$domain,$courseid,$symb,$part);
13254: }
13255:
13256: sub whichuser {
13257: my ($passedsymb)=@_;
13258: my ($symb,$courseid,$domain,$name,$publicuser);
13259: if (defined($env{'form.grade_symb'})) {
13260: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13261: my $allowed=&allowed('vgr',$tmp_courseid);
13262: if (!$allowed &&
13263: exists($env{'request.course.sec'}) &&
13264: $env{'request.course.sec'} !~ /^\s*$/) {
13265: $allowed=&allowed('vgr',$tmp_courseid.
13266: '/'.$env{'request.course.sec'});
13267: }
13268: if ($allowed) {
13269: ($symb)=&get_env_multiple('form.grade_symb');
13270: $courseid=$tmp_courseid;
13271: ($domain)=&get_env_multiple('form.grade_domain');
13272: ($name)=&get_env_multiple('form.grade_username');
13273: return ($symb,$courseid,$domain,$name,$publicuser);
13274: }
13275: }
13276: if (!$passedsymb) {
13277: $symb=&symbread();
13278: } else {
13279: $symb=$passedsymb;
13280: }
13281: $courseid=$env{'request.course.id'};
13282: $domain=$env{'user.domain'};
13283: $name=$env{'user.name'};
13284: if ($name eq 'public' && $domain eq 'public') {
13285: if (!defined($env{'form.username'})) {
13286: $env{'form.username'}.=time.rand(10000000);
13287: }
13288: $name.=$env{'form.username'};
13289: }
13290: return ($symb,$courseid,$domain,$name,$publicuser);
13291:
13292: }
13293:
13294: # ------------------------------------------------------------ Serves up a file
13295: # returns either the contents of the file or
13296: # -1 if the file doesn't exist
13297: #
13298: # if the target is a file that was uploaded via DOCS,
13299: # a check will be made to see if a current copy exists on the local server,
13300: # if it does this will be served, otherwise a copy will be retrieved from
13301: # the home server for the course and stored in /home/httpd/html/userfiles on
13302: # the local server.
13303:
13304: sub getfile {
13305: my ($file) = @_;
13306: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13307: &repcopy($file);
13308: return &readfile($file);
13309: }
13310:
13311: sub repcopy_userfile {
13312: my ($file)=@_;
13313: my $londocroot = $perlvar{'lonDocRoot'};
13314: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13315: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13316: my ($cdom,$cnum,$filename) =
13317: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13318: my $uri="/uploaded/$cdom/$cnum/$filename";
13319: if (-e "$file") {
13320: # we already have a local copy, check it out
13321: my @fileinfo = stat($file);
13322: my $rtncode;
13323: my $info;
13324: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13325: if ($lwpresp ne 'ok') {
13326: # there is no such file anymore, even though we had a local copy
13327: if ($rtncode eq '404') {
13328: unlink($file);
13329: }
13330: return -1;
13331: }
13332: if ($info < $fileinfo[9]) {
13333: # nice, the file we have is up-to-date, just say okay
13334: return 'ok';
13335: } else {
13336: # the file is outdated, get rid of it
13337: unlink($file);
13338: }
13339: }
13340: # one way or the other, at this point, we don't have the file
13341: # construct the correct path for the file
13342: my @parts = ($cdom,$cnum);
13343: if ($filename =~ m|^(.+)/[^/]+$|) {
13344: push @parts, split(/\//,$1);
13345: }
13346: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13347: foreach my $part (@parts) {
13348: $path .= '/'.$part;
13349: if (!-e $path) {
13350: mkdir($path,0770);
13351: }
13352: }
13353: # now the path exists for sure
13354: # get a user agent
13355: my $transferfile=$file.'.in.transfer';
13356: # FIXME: this should flock
13357: if (-e $transferfile) { return 'ok'; }
13358: my $request;
13359: $uri=~s/^\///;
13360: my $homeserver = &homeserver($cnum,$cdom);
13361: my $hostname = &hostname($homeserver);
13362: my $protocol = $protocol{$homeserver};
13363: $protocol = 'http' if ($protocol ne 'https');
13364: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13365: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13366: # did it work?
13367: if ($response->is_error()) {
13368: unlink($transferfile);
13369: &logthis("Userfile repcopy failed for $uri");
13370: return -1;
13371: }
13372: # worked, rename the transfer file
13373: rename($transferfile,$file);
13374: return 'ok';
13375: }
13376:
13377: sub tokenwrapper {
13378: my $uri=shift;
13379: $uri=~s|^https?\://([^/]+)||;
13380: $uri=~s|^/||;
13381: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13382: my $token=$1;
13383: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13384: if ($udom && $uname && $file) {
13385: $file=~s|(\?\.*)*$||;
13386: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13387: my $homeserver = &homeserver($uname,$udom);
13388: my $hostname = &hostname($homeserver);
13389: my $protocol = $protocol{$homeserver};
13390: $protocol = 'http' if ($protocol ne 'https');
13391: return $protocol.'://'.$hostname.'/'.$uri.
13392: (($uri=~/\?/)?'&':'?').'token='.$token.
13393: '&tokenissued='.$perlvar{'lonHostID'};
13394: } else {
13395: return '/adm/notfound.html';
13396: }
13397: }
13398:
13399: # call with reqtype HEAD: get last modification time
13400: # call with reqtype GET: get the file contents
13401: # Do not call this with reqtype GET for large files! It loads everything into memory
13402: #
13403: sub getuploaded {
13404: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13405: $uri=~s/^\///;
13406: my $homeserver = &homeserver($cnum,$cdom);
13407: my $hostname = &hostname($homeserver);
13408: my $protocol = $protocol{$homeserver};
13409: $protocol = 'http' if ($protocol ne 'https');
13410: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13411: my $request=new HTTP::Request($reqtype,$uri);
13412: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13413: $$rtncode = $response->code;
13414: if (! $response->is_success()) {
13415: return 'failed';
13416: }
13417: if ($reqtype eq 'HEAD') {
13418: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13419: } elsif ($reqtype eq 'GET') {
13420: $$info = $response->content;
13421: }
13422: return 'ok';
13423: }
13424:
13425: sub readfile {
13426: my $file = shift;
13427: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13428: my $fh;
13429: open($fh,"<",$file);
13430: my $a='';
13431: while (my $line = <$fh>) { $a .= $line; }
13432: return $a;
13433: }
13434:
13435: sub filelocation {
13436: my ($dir,$file) = @_;
13437: my $location;
13438: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13439:
13440: if ($file =~ m-^/adm/-) {
13441: $file=~s-^/adm/wrapper/-/-;
13442: $file=~s-^/adm/coursedocs/showdoc/-/-;
13443: }
13444:
13445: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13446: $location = $file;
13447: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13448: my ($udom,$uname,$filename)=
13449: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13450: my $home=&homeserver($uname,$udom);
13451: my $is_me=0;
13452: my @ids=¤t_machine_ids();
13453: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13454: if ($is_me) {
13455: $location=propath($udom,$uname).'/userfiles/'.$filename;
13456: } else {
13457: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13458: $udom.'/'.$uname.'/'.$filename;
13459: }
13460: } elsif ($file =~ m-^/adm/-) {
13461: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13462: } else {
13463: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13464: $file=~s:^/(res|priv)/:/:;
13465: my $space=$1;
13466: if ( !( $file =~ m:^/:) ) {
13467: $location = $dir. '/'.$file;
13468: } else {
13469: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13470: }
13471: }
13472: $location=~s://+:/:g; # remove duplicate /
13473: while ($location=~m{/\.\./}) {
13474: if ($location =~ m{/[^/]+/\.\./}) {
13475: $location=~ s{/[^/]+/\.\./}{/}g;
13476: } else {
13477: $location=~ s{/\.\./}{/}g;
13478: }
13479: } #remove dir/..
13480: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13481: return $location;
13482: }
13483:
13484: sub hreflocation {
13485: my ($dir,$file)=@_;
13486: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13487: $file=filelocation($dir,$file);
13488: } elsif ($file=~m-^/adm/-) {
13489: $file=~s-^/adm/wrapper/-/-;
13490: $file=~s-^/adm/coursedocs/showdoc/-/-;
13491: }
13492: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13493: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13494: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13495: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13496: {/uploaded/$1/$2/}x;
13497: }
13498: if ($file=~ m{^/userfiles/}) {
13499: $file =~ s{^/userfiles/}{/uploaded/};
13500: }
13501: return $file;
13502: }
13503:
13504:
13505:
13506:
13507:
13508: sub current_machine_domains {
13509: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13510: }
13511:
13512: sub machine_domains {
13513: my ($hostname) = @_;
13514: my @domains;
13515: my %hostname = &all_hostnames();
13516: while( my($id, $name) = each(%hostname)) {
13517: # &logthis("-$id-$name-$hostname-");
13518: if ($hostname eq $name) {
13519: push(@domains,&host_domain($id));
13520: }
13521: }
13522: return @domains;
13523: }
13524:
13525: sub current_machine_ids {
13526: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13527: }
13528:
13529: sub machine_ids {
13530: my ($hostname) = @_;
13531: $hostname ||= &hostname($perlvar{'lonHostID'});
13532: my @ids;
13533: my %name_to_host = &all_names();
13534: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13535: return @{ $name_to_host{$hostname} };
13536: }
13537: return;
13538: }
13539:
13540: sub additional_machine_domains {
13541: my @domains;
13542: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13543: while( my $line = <$fh>) {
13544: $line =~ s/\s//g;
13545: push(@domains,$line);
13546: }
13547: return @domains;
13548: }
13549:
13550: sub default_login_domain {
13551: my $domain = $perlvar{'lonDefDomain'};
13552: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13553: foreach my $posdom (¤t_machine_domains(),
13554: &additional_machine_domains()) {
13555: if (lc($posdom) eq lc($testdomain)) {
13556: $domain=$posdom;
13557: last;
13558: }
13559: }
13560: return $domain;
13561: }
13562:
13563: sub uses_sts {
13564: my ($ignore_cache) = @_;
13565: my $lonhost = $perlvar{'lonHostID'};
13566: my $hostname = &hostname($lonhost);
13567: my $sts_on;
13568: if ($protocol{$lonhost} eq 'https') {
13569: my $cachetime = 12*3600;
13570: if (!$ignore_cache) {
13571: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
13572: if (defined($cached)) {
13573: return $sts_on;
13574: }
13575: }
13576: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
13577: my $request=new HTTP::Request('HEAD',$url);
13578: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
13579: if ($response->is_success) {
13580: my $has_sts = $response->header('Strict-Transport-Security');
13581: if ($has_sts eq '') {
13582: $sts_on = 0;
13583: } else {
13584: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
13585: my $maxage = $1;
13586: if ($maxage) {
13587: $sts_on = 1;
13588: } else {
13589: $sts_on = 0;
13590: }
13591: } else {
13592: $sts_on = 0;
13593: }
13594: }
13595: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
13596: }
13597: }
13598: return;
13599: }
13600:
13601: # ------------------------------------------------------------- Declutters URLs
13602:
13603: sub declutter {
13604: my $thisfn=shift;
13605: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13606: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13607: $thisfn=~s{^/home/httpd/html}{};
13608: }
13609: $thisfn=~s/^\///;
13610: $thisfn=~s|^adm/wrapper/||;
13611: $thisfn=~s|^adm/coursedocs/showdoc/||;
13612: $thisfn=~s/^res\///;
13613: $thisfn=~s/^priv\///;
13614: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13615: $thisfn=~s/\?.+$//;
13616: }
13617: return $thisfn;
13618: }
13619:
13620: # ------------------------------------------------------------- Clutter up URLs
13621:
13622: sub clutter {
13623: my $thisfn='/'.&declutter(shift);
13624: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13625: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13626: $thisfn='/res'.$thisfn;
13627: }
13628: if ($thisfn !~m|^/adm|) {
13629: if ($thisfn =~ m|^/ext/|) {
13630: $thisfn='/adm/wrapper'.$thisfn;
13631: } else {
13632: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13633: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13634: if ($embstyle eq 'ssi'
13635: || ($embstyle eq 'hdn')
13636: || ($embstyle eq 'rat')
13637: || ($embstyle eq 'prv')
13638: || ($embstyle eq 'ign')) {
13639: #do nothing with these
13640: } elsif (($embstyle eq 'img')
13641: || ($embstyle eq 'emb')
13642: || ($embstyle eq 'wrp')) {
13643: $thisfn='/adm/wrapper'.$thisfn;
13644: } elsif ($embstyle eq 'unk'
13645: && $thisfn!~/\.(sequence|page)$/) {
13646: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13647: } else {
13648: # &logthis("Got a blank emb style");
13649: }
13650: }
13651: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13652: $thisfn='/adm/wrapper'.$thisfn;
13653: }
13654: return $thisfn;
13655: }
13656:
13657: sub clutter_with_no_wrapper {
13658: my $uri = &clutter(shift);
13659: if ($uri =~ m-^/adm/-) {
13660: $uri =~ s-^/adm/wrapper/-/-;
13661: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13662: }
13663: return $uri;
13664: }
13665:
13666: sub freeze_escape {
13667: my ($value)=@_;
13668: if (ref($value)) {
13669: $value=&nfreeze($value);
13670: return '__FROZEN__'.&escape($value);
13671: }
13672: return &escape($value);
13673: }
13674:
13675:
13676: sub thaw_unescape {
13677: my ($value)=@_;
13678: if ($value =~ /^__FROZEN__/) {
13679: substr($value,0,10,undef);
13680: $value=&unescape($value);
13681: return &thaw($value);
13682: }
13683: return &unescape($value);
13684: }
13685:
13686: sub correct_line_ends {
13687: my ($result)=@_;
13688: $$result =~s/\r\n/\n/mg;
13689: $$result =~s/\r/\n/mg;
13690: }
13691: # ================================================================ Main Program
13692:
13693: sub goodbye {
13694: &logthis("Starting Shut down");
13695: #not converted to using infrastruture and probably shouldn't be
13696: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13697: #converted
13698: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13699: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13700: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13701: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13702: #1.1 only
13703: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13704: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13705: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13706: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13707: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13708: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13709: &logthis(sprintf("%-20s is %s",'hits',$hits));
13710: &flushcourselogs();
13711: &logthis("Shutting down");
13712: }
13713:
13714: sub get_dns {
13715: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13716: if (!$ignore_cache) {
13717: my ($content,$cached)=
13718: &Apache::lonnet::is_cached_new('dns',$url);
13719: if ($cached) {
13720: &$func($content,$hashref);
13721: return;
13722: }
13723: }
13724:
13725: my %alldns;
13726: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13727: foreach my $dns (<$config>) {
13728: next if ($dns !~ /^\^(\S*)/x);
13729: my $line = $1;
13730: my ($host,$protocol) = split(/:/,$line);
13731: if ($protocol ne 'https') {
13732: $protocol = 'http';
13733: }
13734: $alldns{$host} = $protocol;
13735: }
13736: close($config);
13737: }
13738: while (%alldns) {
13739: my ($dns) = sort { $b cmp $a } keys(%alldns);
13740: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13741: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13742: delete($alldns{$dns});
13743: next if ($response->is_error());
13744: if ($url eq '/adm/dns/loncapaCRL') {
13745: return &$func($response);
13746: } else {
13747: my @content = split("\n",$response->content);
13748: unless ($nocache) {
13749: &do_cache_new('dns',$url,\@content,30*24*60*60);
13750: }
13751: &$func(\@content,$hashref);
13752: return;
13753: }
13754: }
13755: my $which = (split('/',$url,4))[3];
13756: if ($which eq 'loncapaCRL') {
13757: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13758: if (-e $diskfile) {
13759: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13760: } else {
13761: &logthis("unable to contact DNS, no on disk file $diskfile available");
13762: }
13763: } else {
13764: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13765: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13766: my @content = <$config>;
13767: close($config);
13768: &$func(\@content,$hashref);
13769: }
13770: }
13771: return;
13772: }
13773:
13774: # ------------------------------------------------------Get DNS checksums file
13775: sub parse_dns_checksums_tab {
13776: my ($lines,$hashref) = @_;
13777: my $lonhost = $perlvar{'lonHostID'};
13778: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13779: my $loncaparev = &get_server_loncaparev($machine_dom);
13780: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13781: my $webconfdir = '/etc/httpd/conf';
13782: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13783: $webconfdir = '/etc/apache2';
13784: } elsif ($distro =~ /^sles(\d+)$/) {
13785: if ($1 >= 10) {
13786: $webconfdir = '/etc/apache2';
13787: }
13788: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13789: if ($1 >= 10.0) {
13790: $webconfdir = '/etc/apache2';
13791: }
13792: }
13793: my ($release,$timestamp) = split(/\-/,$loncaparev);
13794: my (%chksum,%revnum);
13795: if (ref($lines) eq 'ARRAY') {
13796: chomp(@{$lines});
13797: my $version = shift(@{$lines});
13798: if ($version eq $release) {
13799: foreach my $line (@{$lines}) {
13800: my ($file,$version,$shasum) = split(/,/,$line);
13801: if ($file =~ m{^/etc/httpd/conf}) {
13802: if ($webconfdir eq '/etc/apache2') {
13803: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13804: }
13805: }
13806: $chksum{$file} = $shasum;
13807: $revnum{$file} = $version;
13808: }
13809: if (ref($hashref) eq 'HASH') {
13810: %{$hashref} = (
13811: sums => \%chksum,
13812: versions => \%revnum,
13813: );
13814: }
13815: }
13816: }
13817: return;
13818: }
13819:
13820: sub fetch_dns_checksums {
13821: my %checksums;
13822: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13823: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13824: my ($release,$timestamp) = split(/\-/,$loncaparev);
13825: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13826: \%checksums);
13827: return \%checksums;
13828: }
13829:
13830: sub fetch_crl_pemfile {
13831: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13832: }
13833:
13834: sub save_crl_pem {
13835: my ($response) = @_;
13836: my ($msg,$hadchanges);
13837: if (ref($response)) {
13838: my $now = time;
13839: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13840: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13841: if (open(my $fh,'>',"$tmpcrl")) {
13842: print $fh $response->content;
13843: close($fh);
13844: if (-e $lonca) {
13845: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13846: my $check = <PIPE>;
13847: close(PIPE);
13848: chomp($check);
13849: if ($check eq 'verify OK') {
13850: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13851: my $backup;
13852: if (-e $dest) {
13853: if (&File::Copy::move($dest,"$dest.bak")) {
13854: $backup = 'ok';
13855: }
13856: }
13857: if (&File::Copy::move($tmpcrl,$dest)) {
13858: $msg = 'ok';
13859: if ($backup) {
13860: my (%oldnums,%newnums);
13861: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13862: while (<PIPE>) {
13863: $oldnums{(split(/:/))[1]} = 1;
13864: }
13865: close(PIPE);
13866: }
13867: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13868: while(<PIPE>) {
13869: $newnums{(split(/:/))[1]} = 1;
13870: }
13871: close(PIPE);
13872: }
13873: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13874: unless (exists($oldnums{$key})) {
13875: $hadchanges = 1;
13876: last;
13877: }
13878: }
13879: unless ($hadchanges) {
13880: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13881: unless (exists($newnums{$key})) {
13882: $hadchanges = 1;
13883: last;
13884: }
13885: }
13886: }
13887: }
13888: }
13889: } else {
13890: unlink($tmpcrl);
13891: }
13892: } else {
13893: unlink($tmpcrl);
13894: }
13895: } else {
13896: unlink($tmpcrl);
13897: }
13898: }
13899: }
13900: return ($msg,$hadchanges);
13901: }
13902:
13903: # ------------------------------------------------------------ Read domain file
13904: {
13905: my $loaded;
13906: my %domain;
13907:
13908: sub parse_domain_tab {
13909: my ($lines) = @_;
13910: foreach my $line (@$lines) {
13911: next if ($line =~ /^(\#|\s*$ )/x);
13912:
13913: chomp($line);
13914: my ($name,@elements) = split(/:/,$line,9);
13915: my %this_domain;
13916: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13917: 'lang_def', 'city', 'longi', 'lati',
13918: 'primary') {
13919: $this_domain{$field} = shift(@elements);
13920: }
13921: $domain{$name} = \%this_domain;
13922: }
13923: }
13924:
13925: sub reset_domain_info {
13926: undef($loaded);
13927: undef(%domain);
13928: }
13929:
13930: sub load_domain_tab {
13931: my ($ignore_cache,$nocache) = @_;
13932: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13933: my $fh;
13934: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13935: my @lines = <$fh>;
13936: &parse_domain_tab(\@lines);
13937: }
13938: close($fh);
13939: $loaded = 1;
13940: }
13941:
13942: sub domain {
13943: &load_domain_tab() if (!$loaded);
13944:
13945: my ($name,$what) = @_;
13946: return if ( !exists($domain{$name}) );
13947:
13948: if (!$what) {
13949: return $domain{$name}{'description'};
13950: }
13951: return $domain{$name}{$what};
13952: }
13953:
13954: sub domain_info {
13955: &load_domain_tab() if (!$loaded);
13956: return %domain;
13957: }
13958:
13959: }
13960:
13961:
13962: # ------------------------------------------------------------- Read hosts file
13963: {
13964: my %hostname;
13965: my %hostdom;
13966: my %libserv;
13967: my $loaded;
13968: my %name_to_host;
13969: my %internetdom;
13970: my %LC_dns_serv;
13971:
13972: sub parse_hosts_tab {
13973: my ($file) = @_;
13974: foreach my $configline (@$file) {
13975: next if ($configline =~ /^(\#|\s*$ )/x);
13976: chomp($configline);
13977: if ($configline =~ /^\^/) {
13978: if ($configline =~ /^\^([\w.\-]+)/) {
13979: $LC_dns_serv{$1} = 1;
13980: }
13981: next;
13982: }
13983: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13984: $name=~s/\s//g;
13985: if ($id && $domain && $role && $name) {
13986: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13987: my $curr = $hostname{$id};
13988: my $skip;
13989: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13990: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13991: $skip = 1;
13992: } else {
13993: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13994: }
13995: }
13996: unless ($skip) {
13997: push(@{$name_to_host{$name}},$id);
13998: }
13999: } else {
14000: push(@{$name_to_host{$name}},$id);
14001: }
14002: $hostname{$id}=$name;
14003: $hostdom{$id}=$domain;
14004: if ($role eq 'library') { $libserv{$id}=$name; }
14005: if (defined($protocol)) {
14006: if ($protocol eq 'https') {
14007: $protocol{$id} = $protocol;
14008: } else {
14009: $protocol{$id} = 'http';
14010: }
14011: } else {
14012: $protocol{$id} = 'http';
14013: }
14014: if (defined($intdom)) {
14015: $internetdom{$id} = $intdom;
14016: }
14017: }
14018: }
14019: }
14020:
14021: sub reset_hosts_info {
14022: &purge_remembered();
14023: &reset_domain_info();
14024: &reset_hosts_ip_info();
14025: undef(%internetdom);
14026: undef(%name_to_host);
14027: undef(%hostname);
14028: undef(%hostdom);
14029: undef(%libserv);
14030: undef($loaded);
14031: }
14032:
14033: sub load_hosts_tab {
14034: my ($ignore_cache,$nocache) = @_;
14035: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14036: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14037: my @config = <$config>;
14038: &parse_hosts_tab(\@config);
14039: close($config);
14040: $loaded=1;
14041: }
14042:
14043: sub hostname {
14044: &load_hosts_tab() if (!$loaded);
14045:
14046: my ($lonid) = @_;
14047: return $hostname{$lonid};
14048: }
14049:
14050: sub all_hostnames {
14051: &load_hosts_tab() if (!$loaded);
14052:
14053: return %hostname;
14054: }
14055:
14056: sub all_names {
14057: my ($ignore_cache,$nocache) = @_;
14058: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14059:
14060: return %name_to_host;
14061: }
14062:
14063: sub all_host_domain {
14064: &load_hosts_tab() if (!$loaded);
14065: return %hostdom;
14066: }
14067:
14068: sub all_host_intdom {
14069: &load_hosts_tab() if (!$loaded);
14070: return %internetdom;
14071: }
14072:
14073: sub is_library {
14074: &load_hosts_tab() if (!$loaded);
14075:
14076: return exists($libserv{$_[0]});
14077: }
14078:
14079: sub all_library {
14080: &load_hosts_tab() if (!$loaded);
14081:
14082: return %libserv;
14083: }
14084:
14085: sub unique_library {
14086: #2x reverse removes all hostnames that appear more than once
14087: my %unique = reverse &all_library();
14088: return reverse %unique;
14089: }
14090:
14091: sub get_servers {
14092: &load_hosts_tab() if (!$loaded);
14093:
14094: my ($domain,$type) = @_;
14095: my %possible_hosts = ($type eq 'library') ? %libserv
14096: : %hostname;
14097: my %result;
14098: if (ref($domain) eq 'ARRAY') {
14099: while ( my ($host,$hostname) = each(%possible_hosts)) {
14100: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14101: $result{$host} = $hostname;
14102: }
14103: }
14104: } else {
14105: while ( my ($host,$hostname) = each(%possible_hosts)) {
14106: if ($hostdom{$host} eq $domain) {
14107: $result{$host} = $hostname;
14108: }
14109: }
14110: }
14111: return %result;
14112: }
14113:
14114: sub get_unique_servers {
14115: my %unique = reverse &get_servers(@_);
14116: return reverse %unique;
14117: }
14118:
14119: sub host_domain {
14120: &load_hosts_tab() if (!$loaded);
14121:
14122: my ($lonid) = @_;
14123: return $hostdom{$lonid};
14124: }
14125:
14126: sub all_domains {
14127: &load_hosts_tab() if (!$loaded);
14128:
14129: my %seen;
14130: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14131: return @uniq;
14132: }
14133:
14134: sub internet_dom {
14135: &load_hosts_tab() if (!$loaded);
14136:
14137: my ($lonid) = @_;
14138: return $internetdom{$lonid};
14139: }
14140:
14141: sub is_LC_dns {
14142: &load_hosts_tab() if (!$loaded);
14143:
14144: my ($hostname) = @_;
14145: return exists($LC_dns_serv{$hostname});
14146: }
14147:
14148: }
14149:
14150: {
14151: my %iphost;
14152: my %name_to_ip;
14153: my %lonid_to_ip;
14154:
14155: sub get_hosts_from_ip {
14156: my ($ip) = @_;
14157: my %iphosts = &get_iphost();
14158: if (ref($iphosts{$ip})) {
14159: return @{$iphosts{$ip}};
14160: }
14161: return;
14162: }
14163:
14164: sub reset_hosts_ip_info {
14165: undef(%iphost);
14166: undef(%name_to_ip);
14167: undef(%lonid_to_ip);
14168: }
14169:
14170: sub get_host_ip {
14171: my ($lonid) = @_;
14172: if (exists($lonid_to_ip{$lonid})) {
14173: return $lonid_to_ip{$lonid};
14174: }
14175: my $name=&hostname($lonid);
14176: my $ip = gethostbyname($name);
14177: return if (!$ip || length($ip) ne 4);
14178: $ip=inet_ntoa($ip);
14179: $name_to_ip{$name} = $ip;
14180: $lonid_to_ip{$lonid} = $ip;
14181: return $ip;
14182: }
14183:
14184: sub get_iphost {
14185: my ($ignore_cache,$nocache) = @_;
14186:
14187: if (!$ignore_cache) {
14188: if (%iphost) {
14189: return %iphost;
14190: }
14191: my ($ip_info,$cached)=
14192: &Apache::lonnet::is_cached_new('iphost','iphost');
14193: if ($cached) {
14194: %iphost = %{$ip_info->[0]};
14195: %name_to_ip = %{$ip_info->[1]};
14196: %lonid_to_ip = %{$ip_info->[2]};
14197: return %iphost;
14198: }
14199: }
14200:
14201: # get yesterday's info for fallback
14202: my %old_name_to_ip;
14203: my ($ip_info,$cached)=
14204: &Apache::lonnet::is_cached_new('iphost','iphost');
14205: if ($cached) {
14206: %old_name_to_ip = %{$ip_info->[1]};
14207: }
14208:
14209: my %name_to_host = &all_names($ignore_cache,$nocache);
14210: foreach my $name (keys(%name_to_host)) {
14211: my $ip;
14212: if (!exists($name_to_ip{$name})) {
14213: $ip = gethostbyname($name);
14214: if (!$ip || length($ip) ne 4) {
14215: if (defined($old_name_to_ip{$name})) {
14216: $ip = $old_name_to_ip{$name};
14217: &logthis("Can't find $name defaulting to old $ip");
14218: } else {
14219: &logthis("Name $name no IP found");
14220: next;
14221: }
14222: } else {
14223: $ip=inet_ntoa($ip);
14224: }
14225: $name_to_ip{$name} = $ip;
14226: } else {
14227: $ip = $name_to_ip{$name};
14228: }
14229: foreach my $id (@{ $name_to_host{$name} }) {
14230: $lonid_to_ip{$id} = $ip;
14231: }
14232: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14233: }
14234: unless ($nocache) {
14235: &do_cache_new('iphost','iphost',
14236: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14237: 48*60*60);
14238: }
14239:
14240: return %iphost;
14241: }
14242:
14243: #
14244: # Given a DNS returns the loncapa host name for that DNS
14245: #
14246: sub host_from_dns {
14247: my ($dns) = @_;
14248: my @hosts;
14249: my $ip;
14250:
14251: if (exists($name_to_ip{$dns})) {
14252: $ip = $name_to_ip{$dns};
14253: }
14254: if (!$ip) {
14255: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14256: if (length($ip) == 4) {
14257: $ip = &IO::Socket::inet_ntoa($ip);
14258: }
14259: }
14260: if ($ip) {
14261: @hosts = get_hosts_from_ip($ip);
14262: return $hosts[0];
14263: }
14264: return undef;
14265: }
14266:
14267: sub get_internet_names {
14268: my ($lonid) = @_;
14269: return if ($lonid eq '');
14270: my ($idnref,$cached)=
14271: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14272: if ($cached) {
14273: return $idnref;
14274: }
14275: my $ip = &get_host_ip($lonid);
14276: my @hosts = &get_hosts_from_ip($ip);
14277: my %iphost = &get_iphost();
14278: my (@idns,%seen);
14279: foreach my $id (@hosts) {
14280: my $dom = &host_domain($id);
14281: my $prim_id = &domain($dom,'primary');
14282: my $prim_ip = &get_host_ip($prim_id);
14283: next if ($seen{$prim_ip});
14284: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14285: foreach my $id (@{$iphost{$prim_ip}}) {
14286: my $intdom = &internet_dom($id);
14287: unless (grep(/^\Q$intdom\E$/,@idns)) {
14288: push(@idns,$intdom);
14289: }
14290: }
14291: }
14292: $seen{$prim_ip} = 1;
14293: }
14294: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14295: }
14296:
14297: }
14298:
14299: sub all_loncaparevs {
14300: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14301: }
14302:
14303: # ---------------------------------------------------------- Read loncaparev table
14304: {
14305: sub load_loncaparevs {
14306: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14307: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14308: while (my $configline=<$config>) {
14309: chomp($configline);
14310: my ($hostid,$loncaparev)=split(/:/,$configline);
14311: $loncaparevs{$hostid}=$loncaparev;
14312: }
14313: close($config);
14314: }
14315: }
14316: }
14317: }
14318:
14319: # ---------------------------------------------------------- Read serverhostID table
14320: {
14321: sub load_serverhomeIDs {
14322: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14323: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14324: while (my $configline=<$config>) {
14325: chomp($configline);
14326: my ($name,$id)=split(/:/,$configline);
14327: $serverhomeIDs{$name}=$id;
14328: }
14329: close($config);
14330: }
14331: }
14332: }
14333: }
14334:
14335:
14336: BEGIN {
14337:
14338: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14339: unless ($readit) {
14340: {
14341: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14342: %perlvar = (%perlvar,%{$configvars});
14343: }
14344:
14345:
14346: # ------------------------------------------------------ Read spare server file
14347: {
14348: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14349:
14350: while (my $configline=<$config>) {
14351: chomp($configline);
14352: if ($configline) {
14353: my ($host,$type) = split(':',$configline,2);
14354: if (!defined($type) || $type eq '') { $type = 'default' };
14355: push(@{ $spareid{$type} }, $host);
14356: }
14357: }
14358: close($config);
14359: }
14360: # ------------------------------------------------------------ Read permissions
14361: {
14362: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14363:
14364: while (my $configline=<$config>) {
14365: chomp($configline);
14366: if ($configline) {
14367: my ($role,$perm)=split(/ /,$configline);
14368: if ($perm ne '') { $pr{$role}=$perm; }
14369: }
14370: }
14371: close($config);
14372: }
14373:
14374: # -------------------------------------------- Read plain texts for permissions
14375: {
14376: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14377:
14378: while (my $configline=<$config>) {
14379: chomp($configline);
14380: if ($configline) {
14381: my ($short,@plain)=split(/:/,$configline);
14382: %{$prp{$short}} = ();
14383: if (@plain > 0) {
14384: $prp{$short}{'std'} = $plain[0];
14385: for (my $i=1; $i<@plain; $i++) {
14386: $prp{$short}{'alt'.$i} = $plain[$i];
14387: }
14388: }
14389: }
14390: }
14391: close($config);
14392: }
14393:
14394: # ---------------------------------------------------------- Read package table
14395: {
14396: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14397:
14398: while (my $configline=<$config>) {
14399: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14400: chomp($configline);
14401: my ($short,$plain)=split(/:/,$configline);
14402: my ($pack,$name)=split(/\&/,$short);
14403: if ($plain ne '') {
14404: $packagetab{$pack.'&'.$name.'&name'}=$name;
14405: $packagetab{$short}=$plain;
14406: }
14407: }
14408: close($config);
14409: }
14410:
14411: # ---------------------------------------------------------- Read loncaparev table
14412:
14413: &load_loncaparevs();
14414:
14415: # ---------------------------------------------------------- Read serverhostID table
14416:
14417: &load_serverhomeIDs();
14418:
14419: # ---------------------------------------------------------- Read releaseslist XML
14420: {
14421: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14422: if (-e $file) {
14423: my $parser = HTML::LCParser->new($file);
14424: while (my $token = $parser->get_token()) {
14425: if ($token->[0] eq 'S') {
14426: my $item = $token->[1];
14427: my $name = $token->[2]{'name'};
14428: my $value = $token->[2]{'value'};
14429: my $valuematch = $token->[2]{'valuematch'};
14430: my $namematch = $token->[2]{'namematch'};
14431: if ($item eq 'parameter') {
14432: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14433: my $release = $parser->get_text();
14434: $release =~ s/(^\s*|\s*$ )//gx;
14435: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14436: }
14437: } elsif ($item ne '' && $name ne '') {
14438: my $release = $parser->get_text();
14439: $release =~ s/(^\s*|\s*$ )//gx;
14440: $needsrelease{$item.':'.$name.':'.$value} = $release;
14441: }
14442: }
14443: }
14444: }
14445: }
14446:
14447: # ---------------------------------------------------------- Read managers table
14448: {
14449: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14450: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14451: while (my $configline=<$config>) {
14452: chomp($configline);
14453: next if ($configline =~ /^\#/);
14454: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14455: $managerstab{$configline} = 1;
14456: }
14457: }
14458: close($config);
14459: }
14460: }
14461: }
14462:
14463: # ------------- set up temporary directory
14464: {
14465: $tmpdir = LONCAPA::tempdir();
14466:
14467: }
14468:
14469: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14470: 'compress_threshold'=> 20_000,
14471: });
14472:
14473: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14474: $dumpcount=0;
14475: $locknum=0;
14476:
14477: &logtouch();
14478: &logthis('<font color="yellow">INFO: Read configuration</font>');
14479: $readit=1;
14480: {
14481: use integer;
14482: my $test=(2**32)+1;
14483: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14484: &logthis(" Detected 64bit platform ($_64bit)");
14485: }
14486: }
14487: }
14488:
14489: 1;
14490: __END__
14491:
14492: =pod
14493:
14494: =head1 NAME
14495:
14496: Apache::lonnet - Subroutines to ask questions about things in the network.
14497:
14498: =head1 SYNOPSIS
14499:
14500: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14501:
14502: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14503:
14504: Common parameters:
14505:
14506: =over 4
14507:
14508: =item *
14509:
14510: $uname : an internal username (if $cname expecting a course Id specifically)
14511:
14512: =item *
14513:
14514: $udom : a domain (if $cdom expecting a course's domain specifically)
14515:
14516: =item *
14517:
14518: $symb : a resource instance identifier
14519:
14520: =item *
14521:
14522: $namespace : the name of a .db file that contains the data needed or
14523: being set.
14524:
14525: =back
14526:
14527: =head1 OVERVIEW
14528:
14529: lonnet provides subroutines which interact with the
14530: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14531: about classes, users, and resources.
14532:
14533: For many of these objects you can also use this to store data about
14534: them or modify them in various ways.
14535:
14536: =head2 Symbs
14537:
14538: To identify a specific instance of a resource, LON-CAPA uses symbols
14539: or "symbs"X<symb>. These identifiers are built from the URL of the
14540: map, the resource number of the resource in the map, and the URL of
14541: the resource itself. The latter is somewhat redundant, but might help
14542: if maps change.
14543:
14544: An example is
14545:
14546: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14547:
14548: The respective map entry is
14549:
14550: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14551: title="Problem 2">
14552: </resource>
14553:
14554: Symbs are used by the random number generator, as well as to store and
14555: restore data specific to a certain instance of for example a problem.
14556:
14557: =head2 Storing And Retrieving Data
14558:
14559: X<store()>X<cstore()>X<restore()>Three of the most important functions
14560: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14561: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14562: is is the non-critical message twin of cstore. These functions are for
14563: handlers to store a perl hash to a user's permanent data space in an
14564: easy manner, and to retrieve it again on another call. It is expected
14565: that a handler would use this once at the beginning to retrieve data,
14566: and then again once at the end to send only the new data back.
14567:
14568: The data is stored in the user's data directory on the user's
14569: homeserver under the ID of the course.
14570:
14571: The hash that is returned by restore will have all of the previous
14572: value for all of the elements of the hash.
14573:
14574: Example:
14575:
14576: #creating a hash
14577: my %hash;
14578: $hash{'foo'}='bar';
14579:
14580: #storing it
14581: &Apache::lonnet::cstore(\%hash);
14582:
14583: #changing a value
14584: $hash{'foo'}='notbar';
14585:
14586: #adding a new value
14587: $hash{'bar'}='foo';
14588: &Apache::lonnet::cstore(\%hash);
14589:
14590: #retrieving the hash
14591: my %history=&Apache::lonnet::restore();
14592:
14593: #print the hash
14594: foreach my $key (sort(keys(%history))) {
14595: print("\%history{$key} = $history{$key}");
14596: }
14597:
14598: Will print out:
14599:
14600: %history{1:foo} = bar
14601: %history{1:keys} = foo:timestamp
14602: %history{1:timestamp} = 990455579
14603: %history{2:bar} = foo
14604: %history{2:foo} = notbar
14605: %history{2:keys} = foo:bar:timestamp
14606: %history{2:timestamp} = 990455580
14607: %history{bar} = foo
14608: %history{foo} = notbar
14609: %history{timestamp} = 990455580
14610: %history{version} = 2
14611:
14612: Note that the special hash entries C<keys>, C<version> and
14613: C<timestamp> were added to the hash. C<version> will be equal to the
14614: total number of versions of the data that have been stored. The
14615: C<timestamp> attribute will be the UNIX time the hash was
14616: stored. C<keys> is available in every historical section to list which
14617: keys were added or changed at a specific historical revision of a
14618: hash.
14619:
14620: B<Warning>: do not store the hash that restore returns directly. This
14621: will cause a mess since it will restore the historical keys as if the
14622: were new keys. I.E. 1:foo will become 1:1:foo etc.
14623:
14624: Calling convention:
14625:
14626: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14627: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14628:
14629: For more detailed information, see lonnet specific documentation.
14630:
14631: =head1 RETURN MESSAGES
14632:
14633: =over 4
14634:
14635: =item * B<con_lost>: unable to contact remote host
14636:
14637: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14638: when the connection is brought back up
14639:
14640: =item * B<con_failed>: unable to contact remote host and unable to save message
14641: for later delivery
14642:
14643: =item * B<error:>: an error a occurred, a description of the error follows the :
14644:
14645: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14646: that was requested
14647:
14648: =back
14649:
14650: =head1 PUBLIC SUBROUTINES
14651:
14652: =head2 Session Environment Functions
14653:
14654: =over 4
14655:
14656: =item *
14657: X<appenv()>
14658: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14659: the user envirnoment file, and will be restored for each access this
14660: user makes during this session, also modifies the %env for the current
14661: process. Optional rolesarrayref - if defined contains a reference to an array
14662: of roles which are exempt from the restriction on modifying user.role entries
14663: in the user's environment.db and in %env.
14664:
14665: =item *
14666: X<delenv()>
14667: B<delenv($delthis,$regexp)>: removes all items from the session
14668: environment file that begin with $delthis. If the
14669: optional second arg - $regexp - is true, $delthis is treated as a
14670: regular expression, otherwise \Q$delthis\E is used.
14671: The values are also deleted from the current processes %env.
14672:
14673: =item * get_env_multiple($name)
14674:
14675: gets $name from the %env hash, it seemlessly handles the cases where multiple
14676: values may be defined and end up as an array ref.
14677:
14678: returns an array of values
14679:
14680: =back
14681:
14682: =head2 User Information
14683:
14684: =over 4
14685:
14686: =item *
14687: X<queryauthenticate()>
14688: B<queryauthenticate($uname,$udom)>: try to determine user's current
14689: authentication scheme
14690:
14691: =item *
14692: X<authenticate()>
14693: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14694: authenticate user from domain's lib servers (first use the current
14695: one). C<$upass> should be the users password.
14696: $checkdefauth is optional (value is 1 if a check should be made to
14697: authenticate user using default authentication method, and allow
14698: account creation if username does not have account in the domain).
14699: $clientcancheckhost is optional (value is 1 if checking whether the
14700: server can host will occur on the client side in lonauth.pm).
14701:
14702: =item *
14703: X<homeserver()>
14704: B<homeserver($uname,$udom)>: find the server which has
14705: the user's directory and files (there must be only one), this caches
14706: the answer, and also caches if there is a borken connection.
14707:
14708: =item *
14709: X<idget()>
14710: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14711: a list of student/employee IDs or clicker IDs
14712: (student/employee IDs are a unique resource in a domain, there must be
14713: only 1 ID per username, and only 1 username per ID in a specific domain).
14714: clickerIDs are not necessarily unique, as students might share clickers.
14715: (returns hash: id=>name,id=>name)
14716:
14717: =item *
14718: X<idrget()>
14719: B<idrget($udom,@unames)>: find the IDs behind a list of
14720: usernames (returns hash: name=>id,name=>id)
14721:
14722: =item *
14723: X<idput()>
14724: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14725: names and associated student/employee IDs or clicker IDs.
14726:
14727: =item *
14728: X<iddel()>
14729: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14730: student/employee ID or clicker ID username look-ups from domain.
14731: The homeserver ($uhome) and namespace ($namespace) are optional.
14732: If no $uhome is provided, it will be determined usig &homeserver()
14733: for each user. If no $namespace is provided, the default is ids.
14734:
14735: =item *
14736: X<updateclickers()>
14737: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14738: clicker ID-to-username look-ups in clickers.db on library server.
14739: Permitted actions are add or del (i.e., add or delete). The
14740: clickers.db contains clickerID as keys (escaped), and each corresponding
14741: value is an escaped comma-separated list of usernames (for whom the
14742: library server is the homeserver), who registered that particular ID.
14743: If $critical is true, the update will be sent via &critical, otherwise
14744: &reply() will be used.
14745:
14746: =item *
14747: X<rolesinit()>
14748: B<rolesinit($udom,$username)>: get user privileges.
14749: returns user role, first access and timer interval hashes
14750:
14751: =item *
14752: X<privileged()>
14753: B<privileged($username,$domain)>: returns a true if user has a
14754: privileged and active role (i.e. su or dc), false otherwise.
14755:
14756: =item *
14757: X<getsection()>
14758: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14759: course $cname, return section name/number or '' for "not in course"
14760: and '-1' for "no section"
14761:
14762: =item *
14763: X<userenvironment()>
14764: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14765: passed in @what from the requested user's environment, returns a hash
14766:
14767: =item *
14768: X<userlog_query()>
14769: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14770: activity.log file. %filters defines filters applied when parsing the
14771: log file. These can be start or end timestamps, or the type of action
14772: - log to look for Login or Logout events, check for Checkin or
14773: Checkout, role for role selection. The response is in the form
14774: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14775: escaped strings of the action recorded in the activity.log file.
14776:
14777: =back
14778:
14779: =head2 User Roles
14780:
14781: =over 4
14782:
14783: =item *
14784:
14785: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14786: returns codes for allowed actions.
14787:
14788: The first argument is required, all others are optional.
14789:
14790: $priv is the privilege being checked.
14791: $uri contains additional information about what is being checked for access (e.g.,
14792: URL, course ID etc.).
14793: $symb is the unique resource instance identifier in a course; if needed,
14794: but not provided, it will be retrieved via a call to &symbread().
14795: $role is the role for which a priv is being checked (only used if priv is evb).
14796: $clientip is the user's IP address (only used when checking for access to portfolio
14797: files).
14798: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14799: prevents recursive calls to &allowed.
14800:
14801: F: full access
14802: U,I,K: authentication modes (cxx only)
14803: '': forbidden
14804: 1: user needs to choose course
14805: 2: browse allowed
14806: A: passphrase authentication needed
14807: B: access temporarily blocked because of a blocking event in a course.
14808:
14809: =item *
14810:
14811: constructaccess($url,$setpriv) : check for access to construction space URL
14812:
14813: See if the owner domain and name in the URL match those in the
14814: expected environment. If so, return three element list
14815: ($ownername,$ownerdomain,$ownerhome).
14816:
14817: Otherwise return the null string.
14818:
14819: If second argument 'setpriv' is true, it assigns the privileges,
14820: and returns the same three element list, unless the owner has
14821: blocked "ad hoc" Domain Coordinator access to the Author Space,
14822: in which case the null string is returned.
14823:
14824: =item *
14825:
14826: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14827: define a custom role rolename set privileges in format of lonTabs/roles.tab
14828: for system, domain, and course level. $uname and $udom are optional (current
14829: user's username and domain will be used when either of $uname or $udom are absent.
14830:
14831: =item *
14832:
14833: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14834: (rolesplain.tab); plain text explanation of a user role term.
14835: $type is Course (default) or Community.
14836: If $forcedefault evaluates to true, text returned will be default
14837: text for $type. Otherwise, if this is a course, the text returned
14838: will be a custom name for the role (if defined in the course's
14839: environment). If no custom name is defined the default is returned.
14840:
14841: =item *
14842:
14843: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14844: All arguments are optional. Returns a hash of a roles, either for
14845: co-author/assistant author roles for a user's Construction Space
14846: (default), or if $context is 'userroles', roles for the user himself,
14847: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14848: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14849: For each key, value is set to colon-separated start and end times for
14850: the role. If no username and domain are specified, will default to
14851: current user/domain. Types, roles, and roledoms are references to arrays
14852: of role statuses (active, future or previous), roles
14853: (e.g., cc,in, st etc.) and domains of the roles which can be used
14854: to restrict the list of roles reported. If no array ref is
14855: provided for types, will default to return only active roles.
14856:
14857: =item *
14858:
14859: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14860: user: $uname:$udom has a role in the course: $cdom_$cnum.
14861:
14862: Additional optional arguments are: $type (if role checking is to be restricted
14863: to certain user status types -- previous (expired roles), active (currently
14864: available roles) or future (roles available in the future), and
14865: $hideprivileged -- if true will not report course roles for users who
14866: have active Domain Coordinator role in course's domain or in additional
14867: domains (specified in 'Domains to check for privileged users' in course
14868: environment -- set via: Course Settings -> Classlists and staff listing).
14869:
14870: =item *
14871:
14872: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14873: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14874: $possdomains and $possroles are optional array refs -- to domains to check and
14875: roles to check. If $possdomains is not specified, a dump will be done of the
14876: users' roles.db to check for a dc or su role in any domain. This can be
14877: time consuming if &privileged is called repeatedly (e.g., when displaying a
14878: classlist), so in such cases, supplying a $possdomains array is preferred, as
14879: this then allows &privileged_by_domain() to be used, which caches the identity
14880: of privileged users, eliminating the need for repeated calls to &dump().
14881:
14882: =item *
14883:
14884: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14885: where the outer hash keys are domains specified in the $possdomains array ref,
14886: next inner hash keys are privileged roles specified in the $roles array ref,
14887: and the innermost hash contains key = value pairs for username:domain = end:start
14888: for active or future "privileged" users with that role in that domain. To avoid
14889: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14890: innerhash are cached using priv_$role and $dom as the identifiers.
14891:
14892: =back
14893:
14894: =head2 User Modification
14895:
14896: =over 4
14897:
14898: =item *
14899:
14900: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14901: user for the level given by URL. Optional start and end dates (leave empty
14902: string or zero for "no date")
14903:
14904: =item *
14905:
14906: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14907: change a users, password, possible return values are: ok,
14908: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14909: refused
14910:
14911: =item *
14912:
14913: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14914:
14915: =item *
14916:
14917: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14918: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14919:
14920: will update user information (firstname,middlename,lastname,generation,
14921: permanentemail), and if forceid is true, student/employee ID also.
14922: A user's institutional affiliation(s) can also be updated.
14923: User information fields will not be overwritten with empty entries
14924: unless the field is included in the $candelete array reference.
14925: This array is included when a single user is modified via "Manage Users",
14926: or when Autoupdate.pl is run by cron in a domain.
14927:
14928: =item *
14929:
14930: modifystudent
14931:
14932: modify a student's enrollment and identification information.
14933: The course id is resolved based on the current user's environment.
14934: This means the invoking user must be a course coordinator or otherwise
14935: associated with a course.
14936:
14937: This call is essentially a wrapper for lonnet::modifyuser and
14938: lonnet::modify_student_enrollment
14939:
14940: Inputs:
14941:
14942: =over 4
14943:
14944: =item B<$udom> Student's loncapa domain
14945:
14946: =item B<$uname> Student's loncapa login name
14947:
14948: =item B<$uid> Student/Employee ID
14949:
14950: =item B<$umode> Student's authentication mode
14951:
14952: =item B<$upass> Student's password
14953:
14954: =item B<$first> Student's first name
14955:
14956: =item B<$middle> Student's middle name
14957:
14958: =item B<$last> Student's last name
14959:
14960: =item B<$gene> Student's generation
14961:
14962: =item B<$usec> Student's section in course
14963:
14964: =item B<$end> Unix time of the roles expiration
14965:
14966: =item B<$start> Unix time of the roles start date
14967:
14968: =item B<$forceid> If defined, allow $uid to be changed
14969:
14970: =item B<$desiredhome> server to use as home server for student
14971:
14972: =item B<$email> Student's permanent e-mail address
14973:
14974: =item B<$type> Type of enrollment (auto or manual)
14975:
14976: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14977:
14978: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14979:
14980: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14981:
14982: =item B<$context> role change context (shown in User Management Logs display in a course)
14983:
14984: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14985:
14986: =item B<$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.
14987:
14988: =back
14989:
14990: =item *
14991:
14992: modify_student_enrollment
14993:
14994: Change a student's enrollment status in a class. The environment variable
14995: 'role.request.course' must be defined for this function to proceed.
14996:
14997: Inputs:
14998:
14999: =over 4
15000:
15001: =item $udom, student's domain
15002:
15003: =item $uname, student's name
15004:
15005: =item $uid, student's user id
15006:
15007: =item $first, student's first name
15008:
15009: =item $middle
15010:
15011: =item $last
15012:
15013: =item $gene
15014:
15015: =item $usec
15016:
15017: =item $end
15018:
15019: =item $start
15020:
15021: =item $type
15022:
15023: =item $locktype
15024:
15025: =item $cid
15026:
15027: =item $selfenroll
15028:
15029: =item $context
15030:
15031: =item $credits, number of credits student will earn from this class
15032:
15033: =item $instsec, institutional course section code for student
15034:
15035: =back
15036:
15037:
15038: =item *
15039:
15040: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15041: custom role; give a custom role to a user for the level given by URL. Specify
15042: name and domain of role author, and role name
15043:
15044: =item *
15045:
15046: revokerole($udom,$uname,$url,$role) : revoke a role for url
15047:
15048: =item *
15049:
15050: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15051:
15052: =back
15053:
15054: =head2 Course Infomation
15055:
15056: =over 4
15057:
15058: =item *
15059:
15060: coursedescription($courseid,$options) : returns a hash of information about the
15061: specified course id, including all environment settings for the
15062: course, the description of the course will be in the hash under the
15063: key 'description'
15064:
15065: $options is an optional parameter that if supplied is a hash reference that controls
15066: what how this function works. It has the following key/values:
15067:
15068: =over 4
15069:
15070: =item freshen_cache
15071:
15072: If defined, and the environment cache for the course is valid, it is
15073: returned in the returned hash.
15074:
15075: =item one_time
15076:
15077: If defined, the last cache time is set to _now_
15078:
15079: =item user
15080:
15081: If defined, the supplied username is used instead of the current user.
15082:
15083:
15084: =back
15085:
15086: =item *
15087:
15088: resdata($name,$domain,$type,@which) : request for current parameter
15089: setting for a specific $type, where $type is either 'course' or 'user',
15090: @what should be a list of parameters to ask about. This routine caches
15091: answers for 10 minutes.
15092:
15093: =item *
15094:
15095: get_courseresdata($courseid, $domain) : dump the entire course resource
15096: data base, returning a hash that is keyed by the resource name and has
15097: values that are the resource value. I believe that the timestamps and
15098: versions are also returned.
15099:
15100: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15101: supplemental content area. This routine caches the number of files for
15102: 10 minutes.
15103:
15104: =back
15105:
15106: =head2 Course Modification
15107:
15108: =over 4
15109:
15110: =item *
15111:
15112: writecoursepref($courseid,%prefs) : write preferences (environment
15113: database) for a course
15114:
15115: =item *
15116:
15117: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15118:
15119: =item *
15120:
15121: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15122:
15123: =item *
15124:
15125: is_course($courseid), is_course($cdom, $cnum)
15126:
15127: Accepts either a combined $courseid (in the form of domain_courseid) or the
15128: two component version $cdom, $cnum. It checks if the specified course exists.
15129:
15130: Returns:
15131: undef if the course doesn't exist, otherwise
15132: in scalar context the combined courseid.
15133: in list context the two components of the course identifier, domain and
15134: courseid.
15135:
15136: =back
15137:
15138: =head2 Resource Subroutines
15139:
15140: =over 4
15141:
15142: =item *
15143:
15144: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15145:
15146: =item *
15147:
15148: repcopy($filename) : subscribes to the requested file, and attempts to
15149: replicate from the owning library server, Might return
15150: 'unavailable', 'not_found', 'forbidden', 'ok', or
15151: 'bad_request', also attempts to grab the metadata for the
15152: resource. Expects the local filesystem pathname
15153: (/home/httpd/html/res/....)
15154:
15155: =back
15156:
15157: =head2 Resource Information
15158:
15159: =over 4
15160:
15161: =item *
15162:
15163: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15164: and returns the value of a variety of different possible values,
15165: $varname should be a request string, and the other parameters can be
15166: used to specify who and what one is asking about. Ordinarily, $cid
15167: does not need to be specified, as it is retrived from
15168: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15169: within lonuserstate::loadmap() when initializing a course, before
15170: $env{'request.course.id'} has been set, so it needs to be provided
15171: in that one case.
15172:
15173: Possible values for $varname are environment.lastname (or other item
15174: from the envirnment hash), user.name (or someother aspect about the
15175: user), resource.0.maxtries (or some other part and parameter of a
15176: resource)
15177:
15178: =item *
15179:
15180: directcondval($number) : get current value of a condition; reads from a state
15181: string
15182:
15183: =item *
15184:
15185: condval($condidx) : value of condition index based on state
15186:
15187: =item *
15188:
15189: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15190: resource's metadata, $what should be either a specific key, or either
15191: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15192: packages that this resource currently uses, the last 3 arguments are
15193: only used internally for recursive metadata.
15194:
15195: the toolsymb is only used where the uri is for an external tool (for which
15196: the uri as well as the symb are guaranteed to be unique).
15197:
15198: this function automatically caches all requests except any made recursively
15199: to retrieve a list of metadata keys for an imported library file ($liburi is
15200: defined).
15201:
15202: =item *
15203:
15204: metadata_query($query,$custom,$customshow) : make a metadata query against the
15205: network of library servers; returns file handle of where SQL and regex results
15206: will be stored for query
15207:
15208: =item *
15209:
15210: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15211: return symbolic list entry (all arguments optional).
15212:
15213: Args: filename is the filename (including path) for the file for which a symb
15214: is required; donotrecurse, if true will prevent calls to allowed() being made
15215: to check access status if more than one resource was found in the bighash
15216: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15217: a randompick); ignorecachednull, if true will prevent a symb of '' being
15218: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15219: cause possible symbs to be checked to determine if they are subject to content
15220: blocking, if so they will not be included as possible symbs; possibles is a
15221: ref to a hash, which, as a side effect, will be populated with all possible
15222: symbs (content blocking not tested).
15223:
15224: returns the data handle
15225:
15226: =item *
15227:
15228: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15229: and is a possible symb for the URL in $thisfn, and if is an encrypted
15230: resource that the user accessed using /enc/ returns a 1 on success, 0
15231: on failure, user must be in a course, as it assumes the existence of
15232: the course initial hash, and uses $env('request.course.id'}. The third
15233: arg is an optional reference to a scalar. If this arg is passed in the
15234: call to symbverify, it will be set to 1 if the symb has been set to be
15235: encrypted; otherwise it will be null.
15236:
15237: =item *
15238:
15239: symbclean($symb) : removes versions numbers from a symb, returns the
15240: cleaned symb
15241:
15242: =item *
15243:
15244: is_on_map($uri) : checks if the $uri is somewhere on the current
15245: course map, user must be in a course for it to work.
15246:
15247: =item *
15248:
15249: numval($salt) : return random seed value (addend for rndseed)
15250:
15251: =item *
15252:
15253: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15254: a random seed, all arguments are optional, if they aren't sent it uses the
15255: environment to derive them. Note: if symb isn't sent and it can't get one
15256: from &symbread it will use the current time as its return value
15257:
15258: =item *
15259:
15260: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15261: unfakeable, receipt
15262:
15263: =item *
15264:
15265: receipt() : API to ireceipt working off of env values; given out to users
15266:
15267: =item *
15268:
15269: countacc($url) : count the number of accesses to a given URL
15270:
15271: =item *
15272:
15273: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15274:
15275: =item *
15276:
15277: checkin($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 $tcrsid)
15278:
15279: =item *
15280:
15281: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15282:
15283: =item *
15284:
15285: devalidate($symb) : devalidate temporary spreadsheet calculations,
15286: forcing spreadsheet to reevaluate the resource scores next time.
15287:
15288: =item *
15289:
15290: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15291: when viewing in course context.
15292:
15293: input: six args -- filename (decluttered), course number, course domain,
15294: url, symb (if registered) and group (if this is a
15295: group item -- e.g., bulletin board, group page etc.).
15296:
15297: output: array of five scalars --
15298: $cfile -- url for file editing if editable on current server
15299: $home -- homeserver of resource (i.e., for author if published,
15300: or course if uploaded.).
15301: $switchserver -- 1 if server switch will be needed.
15302: $forceedit -- 1 if icon/link should be to go to edit mode
15303: $forceview -- 1 if icon/link should be to go to view mode
15304:
15305: =item *
15306:
15307: is_course_upload($file,$cnum,$cdom)
15308:
15309: Used in course context to determine if current file was uploaded to
15310: the course (i.e., would be found in /userfiles/docs on the course's
15311: homeserver.
15312:
15313: input: 3 args -- filename (decluttered), course number and course domain.
15314: output: boolean -- 1 if file was uploaded.
15315:
15316: =back
15317:
15318: =head2 Storing/Retreiving Data
15319:
15320: =over 4
15321:
15322: =item *
15323:
15324: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15325: permanently for this url; hashref needs to be given and should be a \%hashname;
15326: the remaining args aren't required and if they aren't passed or are '' they will
15327: be derived from the env (with the exception of $laststore, which is an
15328: optional arg used when a user's submission is stored in grading).
15329: $laststore is $version=$timestamp, where $version is the most recent version
15330: number retrieved for the corresponding $symb in the $namespace db file, and
15331: $timestamp is the timestamp for that transaction (UNIX time).
15332: $laststore is currently only passed when cstore() is called by
15333: structuretags::finalize_storage().
15334:
15335: =item *
15336:
15337: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15338: but uses critical subroutine
15339:
15340: =item *
15341:
15342: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15343: all args are optional
15344:
15345: =item *
15346:
15347: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15348: dumps the complete (or key matching regexp) namespace into a hash
15349: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15350: normally &store()ed into
15351:
15352: $range should be either an integer '100' (give me the first 100
15353: matching records)
15354: or be two integers sperated by a - with no spaces
15355: '30-50' (give me the 30th through the 50th matching
15356: records)
15357:
15358:
15359: =item *
15360:
15361: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15362: replaces a &store() version of data with a replacement set of data
15363: for a particular resource in a namespace passed in the $storehash hash
15364: reference. If $tolog is true, the transaction is logged in the courselog
15365: with an action=PUTSTORE.
15366:
15367: =item *
15368:
15369: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15370: works very similar to store/cstore, but all data is stored in a
15371: temporary location and can be reset using tmpreset, $storehash should
15372: be a hash reference, returns nothing on success
15373:
15374: =item *
15375:
15376: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15377: similar to restore, but all data is stored in a temporary location and
15378: can be reset using tmpreset. Returns a hash of values on success,
15379: error string otherwise.
15380:
15381: =item *
15382:
15383: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15384: deltes all keys for $symb form the temporary storage hash.
15385:
15386: =item *
15387:
15388: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15389: reference filled in from namesp ($udom and $uname are optional)
15390:
15391: =item *
15392:
15393: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15394: namesp ($udom and $uname are optional)
15395:
15396: =item *
15397:
15398: dump($namespace,$udom,$uname,$regexp,$range) :
15399: dumps the complete (or key matching regexp) namespace into a hash
15400: ($udom, $uname, $regexp, $range are optional)
15401:
15402: $range should be either an integer '100' (give me the first 100
15403: matching records)
15404: or be two integers sperated by a - with no spaces
15405: '30-50' (give me the 30th through the 50th matching
15406: records)
15407: =item *
15408:
15409: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15410: $store can be a scalar, an array reference, or if the amount to be
15411: incremented is > 1, a hash reference.
15412:
15413: ($udom and $uname are optional)
15414:
15415: =item *
15416:
15417: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15418: ($udom and $uname are optional)
15419:
15420: =item *
15421:
15422: cput($namespace,$storehash,$udom,$uname) : critical put
15423: ($udom and $uname are optional)
15424:
15425: =item *
15426:
15427: newput($namespace,$storehash,$udom,$uname) :
15428:
15429: Attempts to store the items in the $storehash, but only if they don't
15430: currently exist, if this succeeds you can be certain that you have
15431: successfully created a new key value pair in the $namespace db.
15432:
15433:
15434: Args:
15435: $namespace: name of database to store values to
15436: $storehash: hashref to store to the db
15437: $udom: (optional) domain of user containing the db
15438: $uname: (optional) name of user caontaining the db
15439:
15440: Returns:
15441: 'ok' -> succeeded in storing all keys of $storehash
15442: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15443: least <key> already existed in the db (other
15444: requested keys may also already exist)
15445: 'error: <msg>' -> unable to tie the DB or other error occurred
15446: 'con_lost' -> unable to contact request server
15447: 'refused' -> action was not allowed by remote machine
15448:
15449:
15450: =item *
15451:
15452: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15453: reference filled in from namesp (encrypts the return communication)
15454: ($udom and $uname are optional)
15455:
15456: =item *
15457:
15458: log($udom,$name,$home,$message) : write to permanent log for user; use
15459: critical subroutine
15460:
15461: =item *
15462:
15463: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15464: array reference filled in from namespace found in domain level on either
15465: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15466:
15467: =item *
15468:
15469: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15470: domain level either on specified domain server ($uhome) or primary domain
15471: server ($udom and $uhome are optional)
15472:
15473: =item *
15474:
15475: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15476: for: authentication, language, quotas, timezone, date locale, and portal URL in
15477: the target domain.
15478:
15479: May also include additional key => value pairs for the following groups:
15480:
15481: =over
15482:
15483: =item
15484: disk quotas (MB allocated by default to portfolios and authoring spaces).
15485:
15486: =over
15487:
15488: =item defaultquota, authorquota
15489:
15490: =back
15491:
15492: =item
15493: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15494: portfolio for users).
15495:
15496: =over
15497:
15498: =item
15499: aboutme, blog, webdav, portfolio
15500:
15501: =back
15502:
15503: =item
15504: requestcourses: ability to request courses, and how requests are processed.
15505:
15506: =over
15507:
15508: =item
15509: official, unofficial, community, textbook, placement
15510:
15511: =back
15512:
15513: =item
15514: inststatus: types of institutional affiliation, and order in which they are displayed.
15515:
15516: =over
15517:
15518: =item
15519: inststatustypes, inststatusorder, inststatusguest
15520:
15521: =back
15522:
15523: =item
15524: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15525: for course's uploaded content.
15526:
15527: =over
15528:
15529: =item
15530: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15531: communityquota, textbookquota, placementquota
15532:
15533: =back
15534:
15535: =item
15536: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15537: on your servers.
15538:
15539: =over
15540:
15541: =item
15542: remotesessions, hostedsessions
15543:
15544: =back
15545:
15546: =back
15547:
15548: In cases where a domain coordinator has never used the "Set Domain Configuration"
15549: utility to create a configuration.db file on a domain's primary library server
15550: only the following domain defaults: auth_def, auth_arg_def, lang_def
15551: -- corresponding values are authentication type (internal, krb4, krb5,
15552: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15553: will be available. Values are retrieved from cache (if current), unless the
15554: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15555: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15556:
15557: Typical usage:
15558:
15559: %domdefaults = &get_domain_defaults($target_domain);
15560:
15561: =back
15562:
15563: =head2 Network Status Functions
15564:
15565: =over 4
15566:
15567: =item *
15568:
15569: dirlist() : return directory list based on URI (first arg).
15570:
15571: Inputs: 1 required, 5 optional.
15572:
15573: =over
15574:
15575: =item
15576: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15577:
15578: =item
15579: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15580:
15581: =item
15582: $username - username of user/course to be listed. Extracted from $uri if absent.
15583:
15584: =item
15585: $getpropath - boolean: 1 if prepend path using &propath().
15586:
15587: =item
15588: $getuserdir - boolean: 1 if prepend path for "userfiles".
15589:
15590: =item
15591: $alternateRoot - path to prepend in place of path from $uri.
15592:
15593: =back
15594:
15595: Returns: Array of up to two items.
15596:
15597: =over
15598:
15599: a reference to an array of files/subdirectories
15600:
15601: =over
15602:
15603: Each element in the array of files/subdirectories is a & separated list of
15604: item name and the result of running stat on the item. If dirlist was requested
15605: for a file instead of a directory, the item name will be ''. For a directory
15606: listing, if the item is a metadata file, the element will end &N&M
15607: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15608: default copyright set (1).
15609:
15610: =back
15611:
15612: a scalar containing error condition (if encountered).
15613:
15614: =over
15615:
15616: =item
15617: no_host (no homeserver identified for $username:$domain).
15618:
15619: =item
15620: no_such_host (server contacted for listing not identified as valid host).
15621:
15622: =item
15623: con_lost (connection to remote server failed).
15624:
15625: =item
15626: refused (invalid $username:$domain received on lond side).
15627:
15628: =item
15629: no_such_dir (directory at specified path on lond side does not exist).
15630:
15631: =item
15632: empty (directory at specified path on lond side is empty).
15633:
15634: =over
15635:
15636: This is currently not encountered because the &ls3, &ls2,
15637: &ls (_handler) routines on the lond side do not filter out
15638: . and .. from a directory listing.
15639:
15640: =back
15641:
15642: =back
15643:
15644: =back
15645:
15646: =item *
15647:
15648: spareserver() : find server with least workload from spare.tab
15649:
15650:
15651: =item *
15652:
15653: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15654: if there is no corresponding loncapa host.
15655:
15656: =back
15657:
15658:
15659: =head2 Apache Request
15660:
15661: =over 4
15662:
15663: =item *
15664:
15665: ssi($url,%hash) : server side include, does a complete request cycle on url to
15666: localhost, posts hash
15667:
15668: =back
15669:
15670: =head2 Data to String to Data
15671:
15672: =over 4
15673:
15674: =item *
15675:
15676: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15677: and '&' separators, supports elements that are arrayrefs and hashrefs
15678:
15679: =item *
15680:
15681: hashref2str($hashref) : convert a hashref into a string complete with
15682: escaping and '=' and '&' separators, supports elements that are
15683: arrayrefs and hashrefs
15684:
15685: =item *
15686:
15687: arrayref2str($arrayref) : convert an arrayref into a string complete
15688: with escaping and '&' separators, supports elements that are arrayrefs
15689: and hashrefs
15690:
15691: =item *
15692:
15693: str2hash($string) : convert string to hash using unescaping and
15694: splitting on '=' and '&', supports elements that are arrayrefs and
15695: hashrefs
15696:
15697: =item *
15698:
15699: str2array($string) : convert string to hash using unescaping and
15700: splitting on '&', supports elements that are arrayrefs and hashrefs
15701:
15702: =back
15703:
15704: =head2 Logging Routines
15705:
15706:
15707: These routines allow one to make log messages in the lonnet.log and
15708: lonnet.perm logfiles.
15709:
15710: =over 4
15711:
15712: =item *
15713:
15714: logtouch() : make sure the logfile, lonnet.log, exists
15715:
15716: =item *
15717:
15718: logthis() : append message to the normal lonnet.log file, it gets
15719: preiodically rolled over and deleted.
15720:
15721: =item *
15722:
15723: logperm() : append a permanent message to lonnet.perm.log, this log
15724: file never gets deleted by any automated portion of the system, only
15725: messages of critical importance should go in here.
15726:
15727:
15728: =back
15729:
15730: =head2 General File Helper Routines
15731:
15732: =over 4
15733:
15734: =item *
15735:
15736: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15737: (a) files in /uploaded
15738: (i) If a local copy of the file exists -
15739: compares modification date of local copy with last-modified date for
15740: definitive version stored on home server for course. If local copy is
15741: stale, requests a new version from the home server and stores it.
15742: If the original has been removed from the home server, then local copy
15743: is unlinked.
15744: (ii) If local copy does not exist -
15745: requests the file from the home server and stores it.
15746:
15747: If $caller is 'uploadrep':
15748: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15749: for request for files originally uploaded via DOCS.
15750: - returns 'ok' if fresh local copy now available, -1 otherwise.
15751:
15752: Otherwise:
15753: This indicates a call from the content generation phase of the request.
15754: - returns the entire contents of the file or -1.
15755:
15756: (b) files in /res
15757: - returns the entire contents of a file or -1;
15758: it properly subscribes to and replicates the file if neccessary.
15759:
15760:
15761: =item *
15762:
15763: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15764: reference
15765:
15766: returns either a stat() list of data about the file or an empty list
15767: if the file doesn't exist or couldn't find out about it (connection
15768: problems or user unknown)
15769:
15770: =item *
15771:
15772: filelocation($dir,$file) : returns file system location of a file
15773: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15774: directory that relative $file lookups are to looked in ($dir of /a/dir
15775: and a file of ../bob will become /a/bob)
15776:
15777: =item *
15778:
15779: hreflocation($dir,$file) : returns file system location or a URL; same as
15780: filelocation except for hrefs
15781:
15782: =item *
15783:
15784: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15785: also removes beginning /home/httpd/html unless /priv/ follows it.
15786:
15787: =back
15788:
15789: =head2 Usererfile file routines (/uploaded*)
15790:
15791: =over 4
15792:
15793: =item *
15794:
15795: userfileupload(): main rotine for putting a file in a user or course's
15796: filespace, arguments are,
15797:
15798: formname - required - this is the name of the element in $env where the
15799: filename, and the contents of the file to create/modifed exist
15800: the filename is in $env{'form.'.$formname.'.filename'} and the
15801: contents of the file is located in $env{'form.'.$formname}
15802: context - if coursedoc, store the file in the course of the active role
15803: of the current user;
15804: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15805: if 'canceloverwrite': delete file in tmp/overwrites directory
15806: subdir - required - subdirectory to put the file in under ../userfiles/
15807: if undefined, it will be placed in "unknown"
15808:
15809: (This routine calls clean_filename() to remove any dangerous
15810: characters from the filename, and then calls finuserfileupload() to
15811: complete the transaction)
15812:
15813: returns either the url of the uploaded file (/uploaded/....) if successful
15814: and /adm/notfound.html if unsuccessful
15815:
15816: =item *
15817:
15818: clean_filename(): routine for cleaing a filename up for storage in
15819: userfile space, argument is:
15820:
15821: filename - proposed filename
15822:
15823: returns: the new clean filename
15824:
15825: =item *
15826:
15827: finishuserfileupload(): routine that creates and sends the file to
15828: userspace, probably shouldn't be called directly
15829:
15830: docuname: username or courseid of destination for the file
15831: docudom: domain of user/course of destination for the file
15832: formname: same as for userfileupload()
15833: fname: filename (including subdirectories) for the file
15834: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15835: allfiles: reference to hash used to store objects found by parser
15836: codebase: reference to hash used for codebases of java objects found by parser
15837: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15838: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15839: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15840: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15841: context: if 'overwrite', will move the uploaded file from its temporary location to
15842: userfiles to facilitate overwriting a previously uploaded file with same name.
15843: mimetype: reference to scalar to accommodate mime type determined
15844: from File::MMagic if $parser = parse.
15845:
15846: returns either the url of the uploaded file (/uploaded/....) if successful
15847: and /adm/notfound.html if unsuccessful (or an error message if context
15848: was 'overwrite').
15849:
15850:
15851: =item *
15852:
15853: renameuserfile(): renames an existing userfile to a new name
15854:
15855: Args:
15856: docuname: username or courseid of destination for the file
15857: docudom: domain of user/course of destination for the file
15858: old: current file name (including any subdirs under userfiles)
15859: new: desired file name (including any subdirs under userfiles)
15860:
15861: =item *
15862:
15863: mkdiruserfile(): creates a directory is a userfiles dir
15864:
15865: Args:
15866: docuname: username or courseid of destination for the file
15867: docudom: domain of user/course of destination for the file
15868: dir: dir to create (including any subdirs under userfiles)
15869:
15870: =item *
15871:
15872: removeuserfile(): removes a file that exists in userfiles
15873:
15874: Args:
15875: docuname: username or courseid of destination for the file
15876: docudom: domain of user/course of destination for the file
15877: fname: filname to delete (including any subdirs under userfiles)
15878:
15879: =item *
15880:
15881: removeuploadedurl(): convience function for removeuserfile()
15882:
15883: Args:
15884: url: a full /uploaded/... url to delete
15885:
15886: =item *
15887:
15888: get_portfile_permissions():
15889: Args:
15890: domain: domain of user or course contain the portfolio files
15891: user: name of user or num of course contain the portfolio files
15892: Returns:
15893: hashref of a dump of the proper file_permissions.db
15894:
15895:
15896: =item *
15897:
15898: get_access_controls():
15899:
15900: Args:
15901: current_permissions: the hash ref returned from get_portfile_permissions()
15902: group: (optional) the group you want the files associated with
15903: file: (optional) the file you want access info on
15904:
15905: Returns:
15906: a hash (keys are file names) of hashes containing
15907: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15908: values are XML containing access control settings (see below)
15909:
15910: Internal notes:
15911:
15912: access controls are stored in file_permissions.db as key=value pairs.
15913: key -> path to file/file_name\0uniqueID:scope_end_start
15914: where scope -> public,guest,course,group,domains or users.
15915: end -> UNIX time for end of access (0 -> no end date)
15916: start -> UNIX time for start of access
15917:
15918: value -> XML description of access control
15919: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15920: <start></start>
15921: <end></end>
15922:
15923: <password></password> for scope type = guest
15924:
15925: <domain></domain> for scope type = course or group
15926: <number></number>
15927: <roles id="">
15928: <role></role>
15929: <access></access>
15930: <section></section>
15931: <group></group>
15932: </roles>
15933:
15934: <dom></dom> for scope type = domains
15935:
15936: <users> for scope type = users
15937: <user>
15938: <uname></uname>
15939: <udom></udom>
15940: </user>
15941: </users>
15942: </scope>
15943:
15944: Access data is also aggregated for each file in an additional key=value pair:
15945: key -> path to file/file_name\0accesscontrol
15946: value -> reference to hash
15947: hash contains key = value pairs
15948: where key = uniqueID:scope_end_start
15949: value = UNIX time record was last updated
15950:
15951: Used to improve speed of look-ups of access controls for each file.
15952:
15953: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15954:
15955: =item *
15956:
15957: modify_access_controls():
15958:
15959: Modifies access controls for a portfolio file
15960: Args
15961: 1. file name
15962: 2. reference to hash of required changes,
15963: 3. domain
15964: 4. username
15965: where domain,username are the domain of the portfolio owner
15966: (either a user or a course)
15967:
15968: Returns:
15969: 1. result of additions or updates ('ok' or 'error', with error message).
15970: 2. result of deletions ('ok' or 'error', with error message).
15971: 3. reference to hash of any new or updated access controls.
15972: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15973: key = integer (inbound ID)
15974: value = uniqueID
15975:
15976: =item *
15977:
15978: get_timebased_id():
15979:
15980: Attempts to get a unique timestamp-based suffix for use with items added to a
15981: course via the Course Editor (e.g., folders, composite pages,
15982: group bulletin boards).
15983:
15984: Args: (first three required; six others optional)
15985:
15986: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15987: docssequence, or name of group
15988:
15989: 2. keyid (alphanumeric): name of temporary locking key in hash,
15990: e.g., num, boardids
15991:
15992: 3. namespace: name of gdbm file used to store suffixes already assigned;
15993: file will be named nohist_namespace.db
15994:
15995: 4. cdom: domain of course; default is current course domain from %env
15996:
15997: 5. cnum: course number; default is current course number from %env
15998:
15999: 6. idtype: set to concat if an additional digit is to be appended to the
16000: unix timestamp to form the suffix, if the plain timestamp is already
16001: in use. Default is to not do this, but simply increment the unix
16002: timestamp by 1 until a unique key is obtained.
16003:
16004: 7. who: holder of locking key; defaults to user:domain for user.
16005:
16006: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16007: retrying); default is 3.
16008:
16009: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16010:
16011: Returns:
16012:
16013: 1. suffix obtained (numeric)
16014:
16015: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16016:
16017: 3. error: contains (localized) error message if an error occurred.
16018:
16019:
16020: =back
16021:
16022: =head2 HTTP Helper Routines
16023:
16024: =over 4
16025:
16026: =item *
16027:
16028: escape() : unpack non-word characters into CGI-compatible hex codes
16029:
16030: =item *
16031:
16032: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16033:
16034: =back
16035:
16036: =head1 PRIVATE SUBROUTINES
16037:
16038: =head2 Underlying communication routines (Shouldn't call)
16039:
16040: =over 4
16041:
16042: =item *
16043:
16044: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16045:
16046: =item *
16047:
16048: reply() : uses subreply to send a message to remote machine, logs all failures
16049:
16050: =item *
16051:
16052: critical() : passes a critical message to another server; if cannot
16053: get through then place message in connection buffer directory and
16054: returns con_delayed, if incapable of saving message, returns
16055: con_failed
16056:
16057: =item *
16058:
16059: reconlonc() : tries to reconnect lonc client processes.
16060:
16061: =back
16062:
16063: =head2 Resource Access Logging
16064:
16065: =over 4
16066:
16067: =item *
16068:
16069: flushcourselogs() : flush (save) buffer logs and access logs
16070:
16071: =item *
16072:
16073: courselog($what) : save message for course in hash
16074:
16075: =item *
16076:
16077: courseacclog($what) : save message for course using &courselog(). Perform
16078: special processing for specific resource types (problems, exams, quizzes, etc).
16079:
16080: =item *
16081:
16082: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16083: as a PerlChildExitHandler
16084:
16085: =back
16086:
16087: =head2 Other
16088:
16089: =over 4
16090:
16091: =item *
16092:
16093: symblist($mapname,%newhash) : update symbolic storage links
16094:
16095: =back
16096:
16097: =cut
16098:
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