1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1516 2023/10/06 01:22:06 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 $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab $passwdmin);
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 Net::CIDR;
100: use Sys::Hostname::FQDN();
101: use LONCAPA qw(:DEFAULT :match);
102: use LONCAPA::Configuration;
103: use LONCAPA::lonmetadata;
104: use LONCAPA::Lond;
105: use LONCAPA::LWPReq;
106: use LONCAPA::transliterate;
107:
108: use File::Copy;
109:
110: my $readit;
111: my $max_connection_retries = 20; # Or some such value.
112:
113: require Exporter;
114:
115: our @ISA = qw (Exporter);
116: our @EXPORT = qw(%env);
117:
118:
119: # ------------------------------------ Logging (parameters, docs, slots, roles)
120: {
121: my $logid;
122: sub write_log {
123: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
124: if ($context eq 'course') {
125: if (($cnum eq '') || ($cdom eq '')) {
126: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
127: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
128: }
129: }
130: $logid ++;
131: my $now = time();
132: my $id=$now.'00000'.$$.'00000'.$logid;
133: my $ip = &get_requestor_ip();
134: my $logentry = {
135: $id => {
136: 'exe_uname' => $env{'user.name'},
137: 'exe_udom' => $env{'user.domain'},
138: 'exe_time' => $now,
139: 'exe_ip' => $ip,
140: 'delflag' => $delflag,
141: 'logentry' => $storehash,
142: 'uname' => $uname,
143: 'udom' => $udom,
144: }
145: };
146: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
147: }
148: }
149:
150: sub logtouch {
151: my $execdir=$perlvar{'lonDaemons'};
152: unless (-e "$execdir/logs/lonnet.log") {
153: open(my $fh,">>","$execdir/logs/lonnet.log");
154: close $fh;
155: }
156: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
157: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
158: }
159:
160: sub logthis {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
166: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
167: print $fh $logstring;
168: close($fh);
169: }
170: return 1;
171: }
172:
173: sub logperm {
174: my $message=shift;
175: my $execdir=$perlvar{'lonDaemons'};
176: my $now=time;
177: my $local=localtime($now);
178: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
179: print $fh "$now:$message:$local\n";
180: close($fh);
181: }
182: return 1;
183: }
184:
185: sub create_connection {
186: my ($hostname,$lonid) = @_;
187: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
188: Type => SOCK_STREAM,
189: Timeout => 10);
190: return 0 if (!$client);
191: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
192: my $result = <$client>;
193: chomp($result);
194: return 1 if ($result eq 'done');
195: return 0;
196: }
197:
198: sub get_server_timezone {
199: my ($cnum,$cdom) = @_;
200: my $home=&homeserver($cnum,$cdom);
201: if ($home ne 'no_host') {
202: my $cachetime = 24*3600;
203: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
204: if (defined($cached)) {
205: return $timezone;
206: } else {
207: my $timezone = &reply('servertimezone',$home);
208: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
209: }
210: }
211: }
212:
213: sub get_server_distarch {
214: my ($lonhost,$ignore_cache) = @_;
215: if (defined($lonhost)) {
216: if (!defined(&hostname($lonhost))) {
217: return;
218: }
219: my $cachetime = 12*3600;
220: if (!$ignore_cache) {
221: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
222: if (defined($cached)) {
223: return $distarch;
224: }
225: }
226: my $rep = &reply('serverdistarch',$lonhost);
227: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
228: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
229: $rep eq '') {
230: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
231: }
232: }
233: return;
234: }
235:
236: sub get_servercerts_info {
237: my ($lonhost,$hostname,$context) = @_;
238: return if ($lonhost eq '');
239: if ($hostname eq '') {
240: $hostname = &hostname($lonhost);
241: }
242: return if ($hostname eq '');
243: my ($rep,$uselocal);
244: if ($context eq 'install') {
245: $uselocal = 1;
246: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
247: $uselocal = 1;
248: }
249: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
250: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
251: if ($distro eq '') {
252: $uselocal = 0;
253: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
254: if ($1 < 6) {
255: $uselocal = 0;
256: }
257: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
258: if ($1 < 12) {
259: $uselocal = 0;
260: }
261: }
262: }
263: if ($uselocal) {
264: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
265: } else {
266: $rep=&reply('servercerts',$lonhost);
267: }
268: my ($result,%returnhash);
269: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
270: ($rep eq 'unknown_cmd')) {
271: $result = $rep;
272: } else {
273: $result = 'ok';
274: my @pairs=split(/\&/,$rep);
275: foreach my $item (@pairs) {
276: my ($key,$value)=split(/=/,$item,2);
277: my $what = &unescape($key);
278: $returnhash{$what}=&thaw_unescape($value);
279: }
280: }
281: return ($result,\%returnhash);
282: }
283:
284: sub get_server_loncaparev {
285: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
286: if (defined($lonhost)) {
287: if (!defined(&hostname($lonhost))) {
288: undef($lonhost);
289: }
290: }
291: if (!defined($lonhost)) {
292: if (defined(&domain($dom,'primary'))) {
293: $lonhost=&domain($dom,'primary');
294: if ($lonhost eq 'no_host') {
295: undef($lonhost);
296: }
297: }
298: }
299: if (defined($lonhost)) {
300: my $cachetime = 12*3600;
301: if (!$ignore_cache) {
302: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
303: if (defined($cached)) {
304: return $loncaparev;
305: }
306: }
307: my ($answer,$loncaparev);
308: my @ids=¤t_machine_ids();
309: if (grep(/^\Q$lonhost\E$/,@ids)) {
310: $answer = $perlvar{'lonVersion'};
311: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
312: $loncaparev = $1;
313: }
314: } else {
315: $answer = &reply('serverloncaparev',$lonhost);
316: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
317: if ($caller eq 'loncron') {
318: my $hostname = &hostname($lonhost);
319: my $protocol = $protocol{$lonhost};
320: $protocol = 'http' if ($protocol ne 'https');
321: my $url = $protocol.'://'.$hostname.'/adm/about.html';
322: my $request=new HTTP::Request('GET',$url);
323: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
324: unless ($response->is_error()) {
325: my $content = $response->content;
326: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
327: $loncaparev = $1;
328: }
329: }
330: } else {
331: $loncaparev = $loncaparevs{$lonhost};
332: }
333: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
334: $loncaparev = $1;
335: }
336: }
337: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
338: }
339: }
340:
341: sub get_server_homeID {
342: my ($hostname,$ignore_cache,$caller) = @_;
343: unless ($ignore_cache) {
344: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
345: if (defined($cached)) {
346: return $serverhomeID;
347: }
348: }
349: my $cachetime = 12*3600;
350: my $serverhomeID;
351: if ($caller eq 'loncron') {
352: my @machine_ids = &machine_ids($hostname);
353: foreach my $id (@machine_ids) {
354: my $response = &reply('serverhomeID',$id);
355: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
356: $serverhomeID = $response;
357: last;
358: }
359: }
360: if ($serverhomeID eq '') {
361: $serverhomeID = $machine_ids[-1];
362: }
363: } else {
364: $serverhomeID = $serverhomeIDs{$hostname};
365: }
366: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
367: }
368:
369: sub get_remote_globals {
370: my ($lonhost,$whathash,$ignore_cache) = @_;
371: my ($result,%returnhash,%whatneeded);
372: if (ref($whathash) eq 'HASH') {
373: foreach my $what (sort(keys(%{$whathash}))) {
374: my $hashid = $lonhost.'-'.$what;
375: my ($response,$cached);
376: unless ($ignore_cache) {
377: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
378: }
379: if (defined($cached)) {
380: $returnhash{$what} = $response;
381: } else {
382: $whatneeded{$what} = 1;
383: }
384: }
385: if (keys(%whatneeded) == 0) {
386: $result = 'ok';
387: } else {
388: my $requested = &freeze_escape(\%whatneeded);
389: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
390: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
391: ($rep eq 'unknown_cmd')) {
392: $result = $rep;
393: } else {
394: $result = 'ok';
395: my @pairs=split(/\&/,$rep);
396: foreach my $item (@pairs) {
397: my ($key,$value)=split(/=/,$item,2);
398: my $what = &unescape($key);
399: my $hashid = $lonhost.'-'.$what;
400: $returnhash{$what}=&thaw_unescape($value);
401: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
402: }
403: }
404: }
405: }
406: return ($result,\%returnhash);
407: }
408:
409: sub remote_devalidate_cache {
410: my ($lonhost,$cachekeys) = @_;
411: my $items;
412: return unless (ref($cachekeys) eq 'ARRAY');
413: my $cachestr = join('&',@{$cachekeys});
414: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
415: return $response;
416: }
417:
418: sub sign_lti {
419: my ($cdom,$cnum,$crsdef,$type,$context,$url,$ltinum,$keynum,$paramsref,$inforef) = @_;
420: my $chome;
421: if (&domain($cdom) ne '') {
422: if ($crsdef) {
423: $chome = &homeserver($cnum,$cdom);
424: } else {
425: $chome = &domain($cdom,'primary');
426: }
427: }
428: if ($cdom && $chome && ($chome ne 'no_host')) {
429: if ((ref($paramsref) eq 'HASH') &&
430: (ref($inforef) eq 'HASH')) {
431: my $rep;
432: if (grep { $_ eq $chome } ¤t_machine_ids()) {
433: # domain information is hosted on this machine
434: $rep =
435: &LONCAPA::Lond::sign_lti_payload($cdom,$cnum,$crsdef,$type,
436: $context,$url,$ltinum,$keynum,
437: $perlvar{'lonVersion'},
438: $paramsref,$inforef);
439: if (ref($rep) eq 'HASH') {
440: return ('ok',$rep);
441: }
442: } else {
443: my ($escurl,$params,$info);
444: $escurl = &escape($url);
445: if (ref($paramsref) eq 'HASH') {
446: $params = &freeze_escape($paramsref);
447: }
448: if (ref($inforef) eq 'HASH') {
449: $info = &freeze_escape($inforef);
450: }
451: $rep=&reply("encrypt:signlti:$cdom:$cnum:$crsdef:$type:$context:$escurl:$ltinum:$keynum:$params:$info",$chome);
452: }
453: if (($rep eq '') || ($rep =~ /^con_lost|error|no_such_host|unknown_cmd/i)) {
454: return ();
455: } elsif (($inforef->{'respfmt'} eq 'to_post_body') ||
456: ($inforef->{'respfmt'} eq 'to_authorization_header')) {
457: return ('ok',$rep);
458: } else {
459: my %returnhash;
460: foreach my $item (split(/\&/,$rep)) {
461: my ($name,$value)=split(/\=/,$item);
462: $returnhash{&unescape($name)}=&thaw_unescape($value);
463: }
464: return('ok',\%returnhash);
465: }
466: } else {
467: return ();
468: }
469: } else {
470: return ();
471: &logthis("sign_lti failed - no homeserver and/or domain ($cdom) ($chome)");
472: }
473: }
474:
475: # -------------------------------------------------- Non-critical communication
476: sub subreply {
477: my ($cmd,$server)=@_;
478: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
479: #
480: # With loncnew process trimming, there's a timing hole between lonc server
481: # process exit and the master server picking up the listen on the AF_UNIX
482: # socket. In that time interval, a lock file will exist:
483:
484: my $lockfile=$peerfile.".lock";
485: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
486: sleep(0.1);
487: }
488: # At this point, either a loncnew parent is listening or an old lonc
489: # or loncnew child is listening so we can connect or everything's dead.
490: #
491: # We'll give the connection a few tries before abandoning it. If
492: # connection is not possible, we'll con_lost back to the client.
493: #
494: my $client;
495: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
496: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
497: Type => SOCK_STREAM,
498: Timeout => 10);
499: if ($client) {
500: last; # Connected!
501: } else {
502: &create_connection(&hostname($server),$server);
503: }
504: sleep(0.1); # Try again later if failed connection.
505: }
506: my $answer;
507: if ($client) {
508: print $client "sethost:$server:$cmd\n";
509: $answer=<$client>;
510: if (!$answer) { $answer="con_lost"; }
511: chomp($answer);
512: } else {
513: $answer = 'con_lost'; # Failed connection.
514: }
515: return $answer;
516: }
517:
518: sub reply {
519: my ($cmd,$server)=@_;
520: unless (defined(&hostname($server))) { return 'no_such_host'; }
521: my $answer=subreply($cmd,$server);
522: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
523: my $logged = $cmd;
524: if ($cmd =~ /^encrypt:([^:]+):/) {
525: my $subcmd = $1;
526: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
527: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
528: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades') ||
529: ($subcmd eq 'put')) {
530: (undef,undef,my @rest) = split(/:/,$cmd);
531: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
532: splice(@rest,2,1,'Hidden');
533: } elsif ($subcmd eq 'passwd') {
534: splice(@rest,2,2,('Hidden','Hidden'));
535: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
536: ($subcmd eq 'autoexportgrades') || ($subcmd eq 'put')) {
537: splice(@rest,3,1,'Hidden');
538: }
539: $logged = join(':',('encrypt:'.$subcmd,@rest));
540: }
541: }
542: &logthis("<font color=\"blue\">WARNING:".
543: " $logged to $server returned $answer</font>");
544: }
545: return $answer;
546: }
547:
548: # ----------------------------------------------------------- Send USR1 to lonc
549:
550: sub reconlonc {
551: my ($lonid) = @_;
552: if ($lonid) {
553: my $hostname = &hostname($lonid);
554: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
555: if ($hostname && -e $peerfile) {
556: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
557: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
558: Type => SOCK_STREAM,
559: Timeout => 10);
560: if ($client) {
561: print $client ("reset_retries\n");
562: my $answer=<$client>;
563: #reset just this one.
564: }
565: }
566: return;
567: }
568:
569: &logthis("Trying to reconnect lonc");
570: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
571: if (open(my $fh,"<",$loncfile)) {
572: my $loncpid=<$fh>;
573: chomp($loncpid);
574: if (kill 0 => $loncpid) {
575: &logthis("lonc at pid $loncpid responding, sending USR1");
576: kill USR1 => $loncpid;
577: sleep 1;
578: } else {
579: &logthis(
580: "<font color=\"blue\">WARNING:".
581: " lonc at pid $loncpid not responding, giving up</font>");
582: }
583: } else {
584: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
585: }
586: }
587:
588: # ------------------------------------------------------ Critical communication
589:
590: sub critical {
591: my ($cmd,$server)=@_;
592: unless (&hostname($server)) {
593: &logthis("<font color=\"blue\">WARNING:".
594: " Critical message to unknown server ($server)</font>");
595: return 'no_such_host';
596: }
597: my $answer=reply($cmd,$server);
598: if ($answer eq 'con_lost') {
599: &reconlonc($server);
600: my $answer=reply($cmd,$server);
601: if ($answer eq 'con_lost') {
602: my $now=time;
603: my $middlename=$cmd;
604: $middlename=substr($middlename,0,16);
605: $middlename=~s/\W//g;
606: my $dfilename=
607: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
608: $dumpcount++;
609: {
610: my $dfh;
611: if (open($dfh,">",$dfilename)) {
612: print $dfh "$cmd\n";
613: close($dfh);
614: }
615: }
616: sleep 1;
617: my $wcmd='';
618: {
619: my $dfh;
620: if (open($dfh,"<",$dfilename)) {
621: $wcmd=<$dfh>;
622: close($dfh);
623: }
624: }
625: chomp($wcmd);
626: if ($wcmd eq $cmd) {
627: &logthis("<font color=\"blue\">WARNING: ".
628: "Connection buffer $dfilename: $cmd</font>");
629: &logperm("D:$server:$cmd");
630: return 'con_delayed';
631: } else {
632: &logthis("<font color=\"red\">CRITICAL:"
633: ." Critical connection failed: $server $cmd</font>");
634: &logperm("F:$server:$cmd");
635: return 'con_failed';
636: }
637: }
638: }
639: return $answer;
640: }
641:
642: # ------------------------------------------- check if return value is an error
643:
644: sub error {
645: my ($result) = @_;
646: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
647: if ($2 == 2) { return undef; }
648: return $1;
649: }
650: return undef;
651: }
652:
653: sub convert_and_load_session_env {
654: my ($lonidsdir,$handle)=@_;
655: my @profile;
656: {
657: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
658: if (!$opened) {
659: return 0;
660: }
661: flock($idf,LOCK_SH);
662: @profile=<$idf>;
663: close($idf);
664: }
665: my %temp_env;
666: foreach my $line (@profile) {
667: if ($line !~ m/=/) {
668: return 0;
669: }
670: chomp($line);
671: my ($envname,$envvalue)=split(/=/,$line,2);
672: $temp_env{&unescape($envname)} = &unescape($envvalue);
673: }
674: unlink("$lonidsdir/$handle.id");
675: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
676: 0640)) {
677: %disk_env = %temp_env;
678: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
679: untie(%disk_env);
680: }
681: return 1;
682: }
683:
684: # ------------------------------------------- Transfer profile into environment
685: my $env_loaded;
686: sub transfer_profile_to_env {
687: my ($lonidsdir,$handle,$force_transfer) = @_;
688: if (!$force_transfer && $env_loaded) { return; }
689:
690: if (!defined($lonidsdir)) {
691: $lonidsdir = $perlvar{'lonIDsDir'};
692: }
693: if (!defined($handle)) {
694: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
695: }
696:
697: my $convert;
698: {
699: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
700: if (!$opened) {
701: return;
702: }
703: flock($idf,LOCK_SH);
704: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
705: &GDBM_READER(),0640)) {
706: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
707: untie(%disk_env);
708: } else {
709: $convert = 1;
710: }
711: }
712: if ($convert) {
713: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
714: &logthis("Failed to load session, or convert session.");
715: }
716: }
717:
718: my %remove;
719: while ( my $envname = each(%env) ) {
720: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
721: if ($time < time-300) {
722: $remove{$key}++;
723: }
724: }
725: }
726:
727: $env{'user.environment'} = "$lonidsdir/$handle.id";
728: $env_loaded=1;
729: foreach my $expired_key (keys(%remove)) {
730: &delenv($expired_key);
731: }
732: }
733:
734: # ---------------------------------------------------- Check for valid session
735: sub check_for_valid_session {
736: my ($r,$name,$userhashref,$domref) = @_;
737: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
738: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
739: if ($name eq 'lonDAV') {
740: $lonidsdir=$r->dir_config('lonDAVsessDir');
741: } else {
742: $lonidsdir=$r->dir_config('lonIDsDir');
743: if ($name eq '') {
744: $name = 'lonID';
745: }
746: }
747: if ($name eq 'lonID') {
748: $secure = 'lonSID';
749: $linkname = 'lonLinkID';
750: $pubname = 'lonPubID';
751: if (exists($cookies{$secure})) {
752: $lonid=$cookies{$secure};
753: } elsif (exists($cookies{$name})) {
754: $lonid=$cookies{$name};
755: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
756: $lonid=$cookies{$linkname};
757: } elsif (exists($cookies{$pubname})) {
758: $lonid=$cookies{$pubname};
759: }
760: } else {
761: $lonid=$cookies{$name};
762: }
763: return undef if (!$lonid);
764:
765: my $handle=&LONCAPA::clean_handle($lonid->value);
766: if (-l "$lonidsdir/$handle.id") {
767: my $link = readlink("$lonidsdir/$handle.id");
768: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
769: $handle = $1;
770: }
771: }
772: if (!-e "$lonidsdir/$handle.id") {
773: if ((ref($domref)) && ($name eq 'lonID') &&
774: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
775: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
776: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
777: $$domref = $possudom;
778: }
779: }
780: return undef;
781: }
782:
783: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
784: return undef if (!$opened);
785:
786: flock($idf,LOCK_SH);
787: my %disk_env;
788: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
789: &GDBM_READER(),0640)) {
790: return undef;
791: }
792:
793: if (!defined($disk_env{'user.name'})
794: || !defined($disk_env{'user.domain'})) {
795: untie(%disk_env);
796: return undef;
797: }
798:
799: if (ref($userhashref) eq 'HASH') {
800: $userhashref->{'name'} = $disk_env{'user.name'};
801: $userhashref->{'domain'} = $disk_env{'user.domain'};
802: if ($disk_env{'request.role'}) {
803: $userhashref->{'role'} = $disk_env{'request.role'};
804: }
805: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
806: if ($userhashref->{'lti'}) {
807: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
808: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
809: }
810: }
811: untie(%disk_env);
812:
813: return $handle;
814: }
815:
816: sub timed_flock {
817: my ($file,$lock_type) = @_;
818: my $failed=0;
819: eval {
820: local $SIG{__DIE__}='DEFAULT';
821: local $SIG{ALRM}=sub {
822: $failed=1;
823: die("failed lock");
824: };
825: alarm(13);
826: flock($file,$lock_type);
827: alarm(0);
828: };
829: if ($failed) {
830: return undef;
831: } else {
832: return 1;
833: }
834: }
835:
836: sub get_sessionfile_vars {
837: my ($handle,$lonidsdir,$storearr) = @_;
838: my %returnhash;
839: unless (ref($storearr) eq 'ARRAY') {
840: return %returnhash;
841: }
842: if (-l "$lonidsdir/$handle.id") {
843: my $link = readlink("$lonidsdir/$handle.id");
844: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
845: $handle = $1;
846: }
847: }
848: if ((-e "$lonidsdir/$handle.id") &&
849: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
850: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
851: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
852: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
853: flock($idf,LOCK_SH);
854: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
855: &GDBM_READER(),0640)) {
856: foreach my $item (@{$storearr}) {
857: $returnhash{$item} = $disk_env{$item};
858: }
859: untie(%disk_env);
860: }
861: }
862: }
863: }
864: return %returnhash;
865: }
866:
867: # ---------------------------------------------------------- Append Environment
868:
869: sub appenv {
870: my ($newenv,$roles) = @_;
871: if (ref($newenv) eq 'HASH') {
872: foreach my $key (keys(%{$newenv})) {
873: my $refused = 0;
874: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
875: $refused = 1;
876: if (ref($roles) eq 'ARRAY') {
877: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
878: if (grep(/^\Q$role\E$/,@{$roles})) {
879: $refused = 0;
880: }
881: }
882: }
883: if ($refused) {
884: &logthis("<font color=\"blue\">WARNING: ".
885: "Attempt to modify environment ".$key." to ".$newenv->{$key}
886: .'</font>');
887: delete($newenv->{$key});
888: } else {
889: $env{$key}=$newenv->{$key};
890: }
891: }
892: my $lonids = $perlvar{'lonIDsDir'};
893: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
894: my $opened = open(my $env_file,'+<',$env{'user.environment'});
895: if ($opened
896: && &timed_flock($env_file,LOCK_EX)
897: &&
898: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
899: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
900: while (my ($key,$value) = each(%{$newenv})) {
901: $disk_env{$key} = $value;
902: }
903: untie(%disk_env);
904: }
905: }
906: }
907: return 'ok';
908: }
909: # ----------------------------------------------------- Delete from Environment
910:
911: sub delenv {
912: my ($delthis,$regexp,$roles) = @_;
913: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
914: my $refused = 1;
915: if (ref($roles) eq 'ARRAY') {
916: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
917: if (grep(/^\Q$role\E$/,@{$roles})) {
918: $refused = 0;
919: }
920: }
921: if ($refused) {
922: &logthis("<font color=\"blue\">WARNING: ".
923: "Attempt to delete from environment ".$delthis);
924: return 'error';
925: }
926: }
927: my $opened = open(my $env_file,'+<',$env{'user.environment'});
928: if ($opened
929: && &timed_flock($env_file,LOCK_EX)
930: &&
931: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
932: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
933: foreach my $key (keys(%disk_env)) {
934: if ($regexp) {
935: if ($key=~/^$delthis/) {
936: delete($env{$key});
937: delete($disk_env{$key});
938: }
939: } else {
940: if ($key=~/^\Q$delthis\E/) {
941: delete($env{$key});
942: delete($disk_env{$key});
943: }
944: }
945: }
946: untie(%disk_env);
947: }
948: return 'ok';
949: }
950:
951: sub get_env_multiple {
952: my ($name) = @_;
953: my @values;
954: if (defined($env{$name})) {
955: # exists is it an array
956: if (ref($env{$name})) {
957: @values=@{ $env{$name} };
958: } else {
959: $values[0]=$env{$name};
960: }
961: }
962: return(@values);
963: }
964:
965: # ------------------------------------------------------------------- Locking
966:
967: sub set_lock {
968: my ($text)=@_;
969: $locknum++;
970: my $id=$$.'-'.$locknum;
971: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
972: 'session.lock.'.$id => $text});
973: return $id;
974: }
975:
976: sub get_locks {
977: my $num=0;
978: my %texts=();
979: foreach my $lock (split(/\,/,$env{'session.locks'})) {
980: if ($lock=~/\w/) {
981: $num++;
982: $texts{$lock}=$env{'session.lock.'.$lock};
983: }
984: }
985: return ($num,%texts);
986: }
987:
988: sub remove_lock {
989: my ($id)=@_;
990: my $newlocks='';
991: foreach my $lock (split(/\,/,$env{'session.locks'})) {
992: if (($lock=~/\w/) && ($lock ne $id)) {
993: $newlocks.=','.$lock;
994: }
995: }
996: &appenv({'session.locks' => $newlocks});
997: &delenv('session.lock.'.$id);
998: }
999:
1000: sub remove_all_locks {
1001: my $activelocks=$env{'session.locks'};
1002: foreach my $lock (split(/\,/,$env{'session.locks'})) {
1003: if ($lock=~/\w/) {
1004: &remove_lock($lock);
1005: }
1006: }
1007: }
1008:
1009:
1010: # ------------------------------------------ Find out current server userload
1011: sub userload {
1012: my $numusers=0;
1013: {
1014: opendir(LONIDS,$perlvar{'lonIDsDir'});
1015: my $filename;
1016: my $curtime=time;
1017: while ($filename=readdir(LONIDS)) {
1018: next if ($filename eq '.' || $filename eq '..');
1019: next if ($filename =~ /publicuser_\d+\.id/);
1020: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
1021: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
1022: if ($curtime-$mtime < 1800) { $numusers++; }
1023: }
1024: closedir(LONIDS);
1025: }
1026: my $userloadpercent=0;
1027: my $maxuserload=$perlvar{'lonUserLoadLim'};
1028: if ($maxuserload) {
1029: $userloadpercent=100*$numusers/$maxuserload;
1030: }
1031: $userloadpercent=sprintf("%.2f",$userloadpercent);
1032: return $userloadpercent;
1033: }
1034:
1035: # ------------------------------ Find server with least workload from spare.tab
1036:
1037: sub spareserver {
1038: my ($r,$loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
1039: my $spare_server;
1040: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
1041: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
1042: : $userloadpercent;
1043: my ($uint_dom,$remotesessions);
1044: if (($udom ne '') && (&domain($udom) ne '')) {
1045: my $uprimary_id = &domain($udom,'primary');
1046: $uint_dom = &internet_dom($uprimary_id);
1047: my %udomdefaults = &get_domain_defaults($udom);
1048: $remotesessions = $udomdefaults{'remotesessions'};
1049: }
1050: my $spareshash = &this_host_spares($udom);
1051: if (ref($spareshash) eq 'HASH') {
1052: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1053: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1054: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
1055: $try_server));
1056: ($spare_server, $lowest_load) =
1057: &compare_server_load($try_server, $spare_server, $lowest_load);
1058: }
1059: }
1060:
1061: my $found_server = ($spare_server ne '' && $lowest_load < 100);
1062:
1063: if (!$found_server) {
1064: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1065: foreach my $try_server (@{ $spareshash->{'default'} }) {
1066: next unless (&spare_can_host($udom,$uint_dom,
1067: $remotesessions,$try_server));
1068: ($spare_server, $lowest_load) =
1069: &compare_server_load($try_server, $spare_server, $lowest_load);
1070: }
1071: }
1072: }
1073: }
1074:
1075: if (!$want_server_name) {
1076: if (defined($spare_server)) {
1077: my $hostname = &hostname($spare_server);
1078: if (defined($hostname)) {
1079: my $protocol = 'http';
1080: if ($protocol{$spare_server} eq 'https') {
1081: $protocol = $protocol{$spare_server};
1082: }
1083: my $alias = &use_proxy_alias($r,$spare_server);
1084: $hostname = $alias if ($alias ne '');
1085: $spare_server = $protocol.'://'.$hostname;
1086: }
1087: }
1088: }
1089: return $spare_server;
1090: }
1091:
1092: sub compare_server_load {
1093: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1094:
1095: if ($required) {
1096: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1097: my $remoterev = &get_server_loncaparev(undef,$try_server);
1098: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1099: if (($major eq '' && $minor eq '') ||
1100: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1101: return ($spare_server,$lowest_load);
1102: }
1103: }
1104:
1105: my $loadans = &reply('load', $try_server);
1106: my $userloadans = &reply('userload',$try_server);
1107:
1108: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1109: return ($spare_server, $lowest_load); #didn't get a number from the server
1110: }
1111:
1112: my $load;
1113: if ($loadans =~ /\d/) {
1114: if ($userloadans =~ /\d/) {
1115: #both are numbers, pick the bigger one
1116: $load = ($loadans > $userloadans) ? $loadans
1117: : $userloadans;
1118: } else {
1119: $load = $loadans;
1120: }
1121: } else {
1122: $load = $userloadans;
1123: }
1124:
1125: if (($load =~ /\d/) && ($load < $lowest_load)) {
1126: $spare_server = $try_server;
1127: $lowest_load = $load;
1128: }
1129: return ($spare_server,$lowest_load);
1130: }
1131:
1132: # --------------------------- ask offload servers if user already has a session
1133: sub find_existing_session {
1134: my ($udom,$uname) = @_;
1135: my $spareshash = &this_host_spares($udom);
1136: if (ref($spareshash) eq 'HASH') {
1137: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1138: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1139: return $try_server if (&has_user_session($try_server, $udom, $uname));
1140: }
1141: }
1142: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1143: foreach my $try_server (@{ $spareshash->{'default'} }) {
1144: return $try_server if (&has_user_session($try_server, $udom, $uname));
1145: }
1146: }
1147: }
1148: return;
1149: }
1150:
1151: sub delusersession {
1152: my ($lonid,$udom,$uname) = @_;
1153: my $uprimary_id = &domain($udom,'primary');
1154: my $uintdom = &internet_dom($uprimary_id);
1155: my $intdom = &internet_dom($lonid);
1156: my $serverhomedom = &host_domain($lonid);
1157: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1158: return &reply(join(':','delusersession',
1159: map {&escape($_)} ($udom,$uname)),$lonid);
1160: }
1161: return;
1162: }
1163:
1164: # check if user's browser sent load balancer cookie and server still has session
1165: # and is not overloaded.
1166: sub check_for_balancer_cookie {
1167: my ($r,$update_mtime) = @_;
1168: my ($otherserver,$cookie);
1169: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1170: if (exists($cookies{'balanceID'})) {
1171: my $balid = $cookies{'balanceID'};
1172: $cookie=&LONCAPA::clean_handle($balid->value);
1173: my $balancedir=$r->dir_config('lonBalanceDir');
1174: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1175: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1176: my ($possudom,$possuname) = ($1,$2);
1177: my $has_session = 0;
1178: if ((&domain($possudom) ne '') &&
1179: (&homeserver($possuname,$possudom) ne 'no_host')) {
1180: my $try_server;
1181: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1182: if ($opened) {
1183: flock($idf,LOCK_SH);
1184: while (my $line = <$idf>) {
1185: chomp($line);
1186: if (&hostname($line) ne '') {
1187: $try_server = $line;
1188: last;
1189: }
1190: }
1191: close($idf);
1192: if (($try_server) &&
1193: (&has_user_session($try_server,$possudom,$possuname))) {
1194: my $lowest_load = 30000;
1195: ($otherserver,$lowest_load) =
1196: &compare_server_load($try_server,undef,$lowest_load);
1197: if ($otherserver ne '' && $lowest_load < 100) {
1198: $has_session = 1;
1199: } else {
1200: undef($otherserver);
1201: }
1202: }
1203: }
1204: }
1205: if ($has_session) {
1206: if ($update_mtime) {
1207: my $atime = my $mtime = time;
1208: utime($atime,$mtime,"$balancedir/$cookie.id");
1209: }
1210: } else {
1211: unlink("$balancedir/$cookie.id");
1212: }
1213: }
1214: }
1215: }
1216: return ($otherserver,$cookie);
1217: }
1218:
1219: sub updatebalcookie {
1220: my ($cookie,$balancer,$lastentry)=@_;
1221: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1222: my ($udom,$uname) = ($1,$2);
1223: my $uprimary_id = &domain($udom,'primary');
1224: my $uintdom = &internet_dom($uprimary_id);
1225: my $intdom = &internet_dom($balancer);
1226: my $serverhomedom = &host_domain($balancer);
1227: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1228: return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
1229: }
1230: }
1231: return;
1232: }
1233:
1234: sub delbalcookie {
1235: my ($cookie,$balancer) =@_;
1236: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1237: my ($udom,$uname) = ($1,$2);
1238: my $uprimary_id = &domain($udom,'primary');
1239: my $uintdom = &internet_dom($uprimary_id);
1240: my $intdom = &internet_dom($balancer);
1241: my $serverhomedom = &host_domain($balancer);
1242: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1243: return &reply('delbalcookie:'.&escape($cookie),$balancer);
1244: }
1245: }
1246: }
1247:
1248: # -------------------------------- ask if server already has a session for user
1249: sub has_user_session {
1250: my ($lonid,$udom,$uname) = @_;
1251: my $result = &reply(join(':','userhassession',
1252: map {&escape($_)} ($udom,$uname)),$lonid);
1253: return 1 if ($result eq 'ok');
1254:
1255: return 0;
1256: }
1257:
1258: # --------- determine least loaded server in a user's domain which allows login
1259:
1260: sub choose_server {
1261: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1262: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1263: my %servers = &get_servers($udom);
1264: my $lowest_load = 30000;
1265: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1266: if ($skiploadbal) {
1267: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1268: unless (defined($cached)) {
1269: my $cachetime = 60*60*24;
1270: my %domconfig =
1271: &get_dom('configuration',['loadbalancing'],$udom);
1272: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1273: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1274: $cachetime);
1275: }
1276: }
1277: }
1278: foreach my $lonhost (keys(%servers)) {
1279: if ($skiploadbal) {
1280: if (ref($balancers) eq 'HASH') {
1281: next if (exists($balancers->{$lonhost}));
1282: }
1283: }
1284: my $loginvia;
1285: if ($checkloginvia) {
1286: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1287: if ($loginvia) {
1288: my ($server,$path) = split(/:/,$loginvia);
1289: ($login_host, $lowest_load) =
1290: &compare_server_load($server, $login_host, $lowest_load, $required);
1291: if ($login_host eq $server) {
1292: $portal_path = $path;
1293: $isredirect = 1;
1294: }
1295: } else {
1296: ($login_host, $lowest_load) =
1297: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1298: if ($login_host eq $lonhost) {
1299: $portal_path = '';
1300: $isredirect = '';
1301: }
1302: }
1303: } else {
1304: ($login_host, $lowest_load) =
1305: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1306: }
1307: }
1308: if ($login_host ne '') {
1309: $hostname = &hostname($login_host);
1310: }
1311: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1312: }
1313:
1314: sub get_course_sessions {
1315: my ($cnum,$cdom,$lastactivity) = @_;
1316: my %servers = &internet_dom_servers($cdom);
1317: my %returnhash;
1318: foreach my $server (sort(keys(%servers))) {
1319: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1320: my @pairs=split(/\&/,$rep);
1321: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1322: foreach my $item (@pairs) {
1323: my ($key,$value)=split(/=/,$item,2);
1324: $key = &unescape($key);
1325: next if ($key =~ /^error: 2 /);
1326: if (exists($returnhash{$key})) {
1327: next if ($value < $returnhash{$key});
1328: }
1329: $returnhash{$key}=$value;
1330: }
1331: }
1332: }
1333: return %returnhash;
1334: }
1335:
1336: # --------------------------------------------- Try to change a user's password
1337:
1338: sub changepass {
1339: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1340: $currentpass = &escape($currentpass);
1341: $newpass = &escape($newpass);
1342: my $lonhost = $perlvar{'lonHostID'};
1343: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1344: $server);
1345: if (! $answer) {
1346: &logthis("No reply on password change request to $server ".
1347: "by $uname in domain $udom.");
1348: } elsif ($answer =~ "^ok") {
1349: &logthis("$uname in $udom successfully changed their password ".
1350: "on $server.");
1351: } elsif ($answer =~ "^pwchange_failure") {
1352: &logthis("$uname in $udom was unable to change their password ".
1353: "on $server. The action was blocked by either lcpasswd ".
1354: "or pwchange");
1355: } elsif ($answer =~ "^non_authorized") {
1356: &logthis("$uname in $udom did not get their password correct when ".
1357: "attempting to change it on $server.");
1358: } elsif ($answer =~ "^auth_mode_error") {
1359: &logthis("$uname in $udom attempted to change their password despite ".
1360: "not being locally or internally authenticated on $server.");
1361: } elsif ($answer =~ "^unknown_user") {
1362: &logthis("$uname in $udom attempted to change their password ".
1363: "on $server but were unable to because $server is not ".
1364: "their home server.");
1365: } elsif ($answer =~ "^refused") {
1366: &logthis("$server refused to change $uname in $udom password because ".
1367: "it was sent an unencrypted request to change the password.");
1368: } elsif ($answer =~ "invalid_client") {
1369: &logthis("$server refused to change $uname in $udom password because ".
1370: "it was a reset by e-mail originating from an invalid server.");
1371: } elsif ($answer =~ "^prioruse") {
1372: &logthis("$server refused to change $uname in $udom password because ".
1373: "the password had been used before");
1374: }
1375: return $answer;
1376: }
1377:
1378: # ----------------------- Try to determine user's current authentication scheme
1379:
1380: sub queryauthenticate {
1381: my ($uname,$udom)=@_;
1382: my $uhome=&homeserver($uname,$udom);
1383: if ((!$uhome) || ($uhome eq 'no_host')) {
1384: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1385: return 'no_host';
1386: }
1387: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1388: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1389: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1390: }
1391: return $answer;
1392: }
1393:
1394: # --------- Try to authenticate user from domain's lib servers (first this one)
1395:
1396: sub authenticate {
1397: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1398: $upass=&escape($upass);
1399: $uname= &LONCAPA::clean_username($uname);
1400: my $uhome=&homeserver($uname,$udom,1);
1401: my $newhome;
1402: if ((!$uhome) || ($uhome eq 'no_host')) {
1403: # Maybe the machine was offline and only re-appeared again recently?
1404: &reconlonc();
1405: # One more
1406: $uhome=&homeserver($uname,$udom,1);
1407: if (($uhome eq 'no_host') && $checkdefauth) {
1408: if (defined(&domain($udom,'primary'))) {
1409: $newhome=&domain($udom,'primary');
1410: }
1411: if ($newhome ne '') {
1412: $uhome = $newhome;
1413: }
1414: }
1415: if ((!$uhome) || ($uhome eq 'no_host')) {
1416: &logthis("User $uname at $udom is unknown in authenticate");
1417: return 'no_host';
1418: }
1419: }
1420: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1421: if ($answer eq 'authorized') {
1422: if ($newhome) {
1423: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1424: return 'no_account_on_host';
1425: } else {
1426: &logthis("User $uname at $udom authorized by $uhome");
1427: return $uhome;
1428: }
1429: }
1430: if ($answer eq 'non_authorized') {
1431: &logthis("User $uname at $udom rejected by $uhome");
1432: return 'no_host';
1433: }
1434: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1435: return 'no_host';
1436: }
1437:
1438: sub can_switchserver {
1439: my ($udom,$home) = @_;
1440: my ($canswitch,@intdoms);
1441: my $internet_names = &get_internet_names($home);
1442: if (ref($internet_names) eq 'ARRAY') {
1443: @intdoms = @{$internet_names};
1444: }
1445: my $uint_dom = &internet_dom(&domain($udom,'primary'));
1446: if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1447: $canswitch = 1;
1448: } else {
1449: my $serverhomeID = &get_server_homeID(&hostname($home));
1450: my $serverhomedom = &host_domain($serverhomeID);
1451: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1452: my %udomdefaults = &get_domain_defaults($udom);
1453: my $remoterev = &get_server_loncaparev('',$home);
1454: $canswitch = &can_host_session($udom,$home,$remoterev,
1455: $udomdefaults{'remotesessions'},
1456: $defdomdefaults{'hostedsessions'});
1457: }
1458: return $canswitch;
1459: }
1460:
1461: sub can_host_session {
1462: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1463: my $canhost = 1;
1464: my $host_idn = &internet_dom($lonhost);
1465: if (ref($remotesessions) eq 'HASH') {
1466: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1467: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1468: $canhost = 0;
1469: } else {
1470: $canhost = 1;
1471: }
1472: }
1473: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1474: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1475: $canhost = 1;
1476: } else {
1477: $canhost = 0;
1478: }
1479: }
1480: if ($canhost) {
1481: if ($remotesessions->{'version'} ne '') {
1482: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1483: if ($reqmajor ne '' && $reqminor ne '') {
1484: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1485: my $major = $1;
1486: my $minor = $2;
1487: if (($major < $reqmajor ) ||
1488: (($major == $reqmajor) && ($minor < $reqminor))) {
1489: $canhost = 0;
1490: }
1491: } else {
1492: $canhost = 0;
1493: }
1494: }
1495: }
1496: }
1497: }
1498: if ($canhost) {
1499: if (ref($hostedsessions) eq 'HASH') {
1500: my $uprimary_id = &domain($udom,'primary');
1501: my $uint_dom = &internet_dom($uprimary_id);
1502: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1503: if (($uint_dom ne '') &&
1504: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1505: $canhost = 0;
1506: } else {
1507: $canhost = 1;
1508: }
1509: }
1510: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1511: if (($uint_dom ne '') &&
1512: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1513: $canhost = 1;
1514: } else {
1515: $canhost = 0;
1516: }
1517: }
1518: }
1519: }
1520: return $canhost;
1521: }
1522:
1523: sub spare_can_host {
1524: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1525: my $canhost=1;
1526: my $try_server_hostname = &hostname($try_server);
1527: my $serverhomeID = &get_server_homeID($try_server_hostname);
1528: my $serverhomedom = &host_domain($serverhomeID);
1529: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1530: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1531: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1532: $canhost = 0;
1533: }
1534: }
1535: if ($canhost) {
1536: if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
1537: if ($defdomdefaults{'offloadoth'}{$try_server}) {
1538: unless (&shared_institution($udom,$try_server)) {
1539: $canhost = 0;
1540: }
1541: }
1542: }
1543: }
1544: if (($canhost) && ($uint_dom)) {
1545: my @intdoms;
1546: my $internet_names = &get_internet_names($try_server);
1547: if (ref($internet_names) eq 'ARRAY') {
1548: @intdoms = @{$internet_names};
1549: }
1550: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1551: my $remoterev = &get_server_loncaparev(undef,$try_server);
1552: $canhost = &can_host_session($udom,$try_server,$remoterev,
1553: $remotesessions,
1554: $defdomdefaults{'hostedsessions'});
1555: }
1556: }
1557: return $canhost;
1558: }
1559:
1560: sub this_host_spares {
1561: my ($dom) = @_;
1562: my ($dom_in_use,$lonhost_in_use,$result);
1563: my @hosts = ¤t_machine_ids();
1564: foreach my $lonhost (@hosts) {
1565: if (&host_domain($lonhost) eq $dom) {
1566: $dom_in_use = $dom;
1567: $lonhost_in_use = $lonhost;
1568: last;
1569: }
1570: }
1571: if ($dom_in_use ne '') {
1572: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1573: }
1574: if (ref($result) ne 'HASH') {
1575: $lonhost_in_use = $perlvar{'lonHostID'};
1576: $dom_in_use = &host_domain($lonhost_in_use);
1577: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1578: if (ref($result) ne 'HASH') {
1579: $result = \%spareid;
1580: }
1581: }
1582: return $result;
1583: }
1584:
1585: sub spares_for_offload {
1586: my ($dom_in_use,$lonhost_in_use) = @_;
1587: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1588: if (defined($cached)) {
1589: return $result;
1590: } else {
1591: my $cachetime = 60*60*24;
1592: my %domconfig =
1593: &get_dom('configuration',['usersessions'],$dom_in_use);
1594: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1595: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1596: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1597: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1598: }
1599: }
1600: }
1601: }
1602: return;
1603: }
1604:
1605: sub get_lonbalancer_config {
1606: my ($servers) = @_;
1607: my ($currbalancer,$currtargets);
1608: if (ref($servers) eq 'HASH') {
1609: foreach my $server (keys(%{$servers})) {
1610: my %what = (
1611: spareid => 1,
1612: perlvar => 1,
1613: );
1614: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1615: if ($result eq 'ok') {
1616: if (ref($returnhash) eq 'HASH') {
1617: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1618: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1619: $currbalancer = $server;
1620: $currtargets = {};
1621: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1622: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1623: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1624: }
1625: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1626: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1627: }
1628: }
1629: last;
1630: }
1631: }
1632: }
1633: }
1634: }
1635: }
1636: return ($currbalancer,$currtargets);
1637: }
1638:
1639: sub check_loadbalancing {
1640: my ($uname,$udom,$caller) = @_;
1641: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1642: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1643: my $lonhost = $perlvar{'lonHostID'};
1644: my @hosts = ¤t_machine_ids();
1645: my $uprimary_id = &domain($udom,'primary');
1646: my $uintdom = &internet_dom($uprimary_id);
1647: my $intdom = &internet_dom($lonhost);
1648: my $serverhomedom = &host_domain($lonhost);
1649: my $domneedscache;
1650: my $cachetime = 60*60*24;
1651:
1652: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1653: $dom_in_use = $udom;
1654: $homeintdom = 1;
1655: } else {
1656: $dom_in_use = $serverhomedom;
1657: }
1658: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1659: unless (defined($cached)) {
1660: my %domconfig =
1661: &get_dom('configuration',['loadbalancing'],$dom_in_use);
1662: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1663: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1664: } else {
1665: $domneedscache = $dom_in_use;
1666: }
1667: }
1668: if (ref($result) eq 'HASH') {
1669: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1670: &check_balancer_result($result,@hosts);
1671: if ($is_balancer) {
1672: if (ref($currrules) eq 'HASH') {
1673: if ($homeintdom) {
1674: if ($uname ne '') {
1675: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1676: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1677: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1678: $rule_in_effect = $currrules->{'_LC_author'};
1679: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1680: $rule_in_effect = $currrules->{'_LC_adv'}
1681: }
1682: }
1683: if ($rule_in_effect eq '') {
1684: my %userenv = &userenvironment($udom,$uname,'inststatus');
1685: if ($userenv{'inststatus'} ne '') {
1686: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1687: my ($othertitle,$usertypes,$types) =
1688: &Apache::loncommon::sorted_inst_types($udom);
1689: if (ref($types) eq 'ARRAY') {
1690: foreach my $type (@{$types}) {
1691: if (grep(/^\Q$type\E$/,@statuses)) {
1692: if (exists($currrules->{$type})) {
1693: $rule_in_effect = $currrules->{$type};
1694: }
1695: }
1696: }
1697: }
1698: } else {
1699: if (exists($currrules->{'default'})) {
1700: $rule_in_effect = $currrules->{'default'};
1701: }
1702: }
1703: }
1704: } else {
1705: if (exists($currrules->{'default'})) {
1706: $rule_in_effect = $currrules->{'default'};
1707: }
1708: }
1709: } else {
1710: if ($currrules->{'_LC_external'} ne '') {
1711: $rule_in_effect = $currrules->{'_LC_external'};
1712: }
1713: }
1714: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1715: $uname,$udom);
1716: }
1717: }
1718: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1719: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1720: unless (defined($cached)) {
1721: my %domconfig =
1722: &get_dom('configuration',['loadbalancing'],$serverhomedom);
1723: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1724: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1725: } else {
1726: $domneedscache = $serverhomedom;
1727: }
1728: }
1729: if (ref($result) eq 'HASH') {
1730: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1731: &check_balancer_result($result,@hosts);
1732: if ($is_balancer) {
1733: if (ref($currrules) eq 'HASH') {
1734: if ($currrules->{'_LC_internetdom'} ne '') {
1735: $rule_in_effect = $currrules->{'_LC_internetdom'};
1736: }
1737: }
1738: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1739: $uname,$udom);
1740: }
1741: } else {
1742: if ($perlvar{'lonBalancer'} eq 'yes') {
1743: $is_balancer = 1;
1744: $offloadto = &this_host_spares($dom_in_use);
1745: }
1746: unless (defined($cached)) {
1747: $domneedscache = $serverhomedom;
1748: }
1749: }
1750: } else {
1751: if ($perlvar{'lonBalancer'} eq 'yes') {
1752: $is_balancer = 1;
1753: $offloadto = &this_host_spares($dom_in_use);
1754: }
1755: unless (defined($cached)) {
1756: $domneedscache = $serverhomedom;
1757: }
1758: }
1759: if ($domneedscache) {
1760: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1761: }
1762: if (($is_balancer) && ($caller ne 'switchserver')) {
1763: my $lowest_load = 30000;
1764: if (ref($offloadto) eq 'HASH') {
1765: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1766: foreach my $try_server (@{$offloadto->{'primary'}}) {
1767: ($otherserver,$lowest_load) =
1768: &compare_server_load($try_server,$otherserver,$lowest_load);
1769: }
1770: }
1771: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1772:
1773: if (!$found_server) {
1774: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1775: foreach my $try_server (@{$offloadto->{'default'}}) {
1776: ($otherserver,$lowest_load) =
1777: &compare_server_load($try_server,$otherserver,$lowest_load);
1778: }
1779: }
1780: }
1781: } elsif (ref($offloadto) eq 'ARRAY') {
1782: if (@{$offloadto} == 1) {
1783: $otherserver = $offloadto->[0];
1784: } elsif (@{$offloadto} > 1) {
1785: foreach my $try_server (@{$offloadto}) {
1786: ($otherserver,$lowest_load) =
1787: &compare_server_load($try_server,$otherserver,$lowest_load);
1788: }
1789: }
1790: }
1791: unless ($caller eq 'login') {
1792: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1793: $is_balancer = 0;
1794: if ($uname ne '' && $udom ne '') {
1795: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1796: &appenv({'user.loadbalexempt' => $lonhost,
1797: 'user.loadbalcheck.time' => time});
1798: }
1799: }
1800: }
1801: }
1802: }
1803: if (($is_balancer) && (!$homeintdom)) {
1804: undef($setcookie);
1805: }
1806: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1807: }
1808:
1809: sub check_balancer_result {
1810: my ($result,@hosts) = @_;
1811: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1812: if (ref($result) eq 'HASH') {
1813: if ($result->{'lonhost'} ne '') {
1814: my $currbalancer = $result->{'lonhost'};
1815: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1816: $is_balancer = 1;
1817: $currtargets = $result->{'targets'};
1818: $currrules = $result->{'rules'};
1819: }
1820: $dom_balancers = $currbalancer;
1821: } else {
1822: if (keys(%{$result})) {
1823: foreach my $key (keys(%{$result})) {
1824: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1825: (ref($result->{$key}) eq 'HASH')) {
1826: $is_balancer = 1;
1827: $currrules = $result->{$key}{'rules'};
1828: $currtargets = $result->{$key}{'targets'};
1829: $setcookie = $result->{$key}{'cookie'};
1830: last;
1831: }
1832: }
1833: $dom_balancers = join(',',sort(keys(%{$result})));
1834: }
1835: }
1836: }
1837: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1838: }
1839:
1840: sub get_loadbalancer_targets {
1841: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1842: my $offloadto;
1843: if ($rule_in_effect eq 'none') {
1844: return [$perlvar{'lonHostID'}];
1845: } elsif ($rule_in_effect eq '') {
1846: $offloadto = $currtargets;
1847: } else {
1848: if ($rule_in_effect eq 'homeserver') {
1849: my $homeserver = &homeserver($uname,$udom);
1850: if ($homeserver ne 'no_host') {
1851: $offloadto = [$homeserver];
1852: }
1853: } elsif ($rule_in_effect eq 'externalbalancer') {
1854: my %domconfig =
1855: &get_dom('configuration',['loadbalancing'],$udom);
1856: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1857: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1858: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1859: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1860: }
1861: }
1862: } else {
1863: my %servers = &internet_dom_servers($udom);
1864: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1865: if (&hostname($remotebalancer) ne '') {
1866: $offloadto = [$remotebalancer];
1867: }
1868: }
1869: } elsif (&hostname($rule_in_effect) ne '') {
1870: $offloadto = [$rule_in_effect];
1871: }
1872: }
1873: return $offloadto;
1874: }
1875:
1876: sub internet_dom_servers {
1877: my ($dom) = @_;
1878: my (%uniqservers,%servers);
1879: my $primaryserver = &hostname(&domain($dom,'primary'));
1880: my @machinedoms = &machine_domains($primaryserver);
1881: foreach my $mdom (@machinedoms) {
1882: my %currservers = %servers;
1883: my %server = &get_servers($mdom);
1884: %servers = (%currservers,%server);
1885: }
1886: my %by_hostname;
1887: foreach my $id (keys(%servers)) {
1888: push(@{$by_hostname{$servers{$id}}},$id);
1889: }
1890: foreach my $hostname (sort(keys(%by_hostname))) {
1891: if (@{$by_hostname{$hostname}} > 1) {
1892: my $match = 0;
1893: foreach my $id (@{$by_hostname{$hostname}}) {
1894: if (&host_domain($id) eq $dom) {
1895: $uniqservers{$id} = $hostname;
1896: $match = 1;
1897: }
1898: }
1899: unless ($match) {
1900: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1901: }
1902: } else {
1903: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1904: }
1905: }
1906: return %uniqservers;
1907: }
1908:
1909: sub trusted_domains {
1910: my ($cmdtype,$calldom) = @_;
1911: my ($trusted,$untrusted);
1912: if (&domain($calldom) eq '') {
1913: return ($trusted,$untrusted);
1914: }
1915: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1916: return ($trusted,$untrusted);
1917: }
1918: my $callprimary = &domain($calldom,'primary');
1919: my $intcalldom = &internet_dom($callprimary);
1920: if ($intcalldom eq '') {
1921: return ($trusted,$untrusted);
1922: }
1923:
1924: my ($trustconfig,$cached)=&is_cached_new('trust',$calldom);
1925: unless (defined($cached)) {
1926: my %domconfig = &get_dom('configuration',['trust'],$calldom);
1927: &do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1928: $trustconfig = $domconfig{'trust'};
1929: }
1930: if (ref($trustconfig)) {
1931: my (%possexc,%possinc,@allexc,@allinc);
1932: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1933: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1934: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1935: }
1936: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1937: $possinc{$intcalldom} = 1;
1938: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1939: }
1940: }
1941: if (keys(%possexc)) {
1942: if (keys(%possinc)) {
1943: foreach my $key (sort(keys(%possexc))) {
1944: next if ($key eq $intcalldom);
1945: unless ($possinc{$key}) {
1946: push(@allexc,$key);
1947: }
1948: }
1949: } else {
1950: @allexc = sort(keys(%possexc));
1951: }
1952: }
1953: if (keys(%possinc)) {
1954: $possinc{$intcalldom} = 1;
1955: @allinc = sort(keys(%possinc));
1956: }
1957: if ((@allexc > 0) || (@allinc > 0)) {
1958: my %doms_by_intdom;
1959: my %allintdoms = &all_host_intdom();
1960: my %alldoms = &all_host_domain();
1961: foreach my $key (%allintdoms) {
1962: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1963: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1964: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1965: }
1966: } else {
1967: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1968: }
1969: }
1970: foreach my $exc (@allexc) {
1971: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1972: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1973: }
1974: }
1975: foreach my $inc (@allinc) {
1976: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1977: push(@{$trusted},@{$doms_by_intdom{$inc}});
1978: }
1979: }
1980: }
1981: }
1982: return ($trusted,$untrusted);
1983: }
1984:
1985: sub will_trust {
1986: my ($cmdtype,$domain,$possdom) = @_;
1987: return 1 if ($domain eq $possdom);
1988: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1989: my $willtrust;
1990: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1991: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1992: $willtrust = 1;
1993: }
1994: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1995: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1996: $willtrust = 1;
1997: }
1998: } else {
1999: $willtrust = 1;
2000: }
2001: return $willtrust;
2002: }
2003:
2004: # ---------------------- Find the homebase for a user from domain's lib servers
2005:
2006: my %homecache;
2007: sub homeserver {
2008: my ($uname,$udom,$ignoreBadCache)=@_;
2009: my $index="$uname:$udom";
2010:
2011: if (exists($homecache{$index})) { return $homecache{$index}; }
2012:
2013: my %servers = &get_servers($udom,'library');
2014: foreach my $tryserver (keys(%servers)) {
2015: next if ($ignoreBadCache ne 'true' &&
2016: exists($badServerCache{$tryserver}));
2017:
2018: my $answer=reply("home:$udom:$uname",$tryserver);
2019: if ($answer eq 'found') {
2020: delete($badServerCache{$tryserver});
2021: return $homecache{$index}=$tryserver;
2022: } elsif ($answer eq 'no_host') {
2023: $badServerCache{$tryserver}=1;
2024: }
2025: }
2026: return 'no_host';
2027: }
2028:
2029: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
2030:
2031: sub idget {
2032: my ($udom,$idsref,$namespace)=@_;
2033: my %returnhash=();
2034: my @ids=();
2035: if (ref($idsref) eq 'ARRAY') {
2036: @ids = @{$idsref};
2037: } else {
2038: return %returnhash;
2039: }
2040: if ($namespace eq '') {
2041: $namespace = 'ids';
2042: }
2043:
2044: my %servers = &get_servers($udom,'library');
2045: foreach my $tryserver (keys(%servers)) {
2046: my $idlist=join('&', map { &escape($_); } @ids);
2047: if ($namespace eq 'ids') {
2048: $idlist=~tr/A-Z/a-z/;
2049: }
2050: my $reply;
2051: if ($namespace eq 'ids') {
2052: $reply=&reply("idget:$udom:".$idlist,$tryserver);
2053: } else {
2054: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
2055: }
2056: my @answer=();
2057: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
2058: @answer=split(/\&/,$reply);
2059: } ;
2060: my $i;
2061: for ($i=0;$i<=$#ids;$i++) {
2062: if ($answer[$i]) {
2063: $returnhash{$ids[$i]}=&unescape($answer[$i]);
2064: }
2065: }
2066: }
2067: return %returnhash;
2068: }
2069:
2070: # ------------------------------------- Find the IDs behind a list of usernames
2071:
2072: sub idrget {
2073: my ($udom,@unames)=@_;
2074: my %returnhash=();
2075: foreach my $uname (@unames) {
2076: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
2077: }
2078: return %returnhash;
2079: }
2080:
2081: # Store away a list of names and associated student/employee IDs or clicker IDs
2082:
2083: sub idput {
2084: my ($udom,$idsref,$uhom,$namespace)=@_;
2085: my %servers=();
2086: my %ids=();
2087: my %byid = ();
2088: if (ref($idsref) eq 'HASH') {
2089: %ids=%{$idsref};
2090: }
2091: if ($namespace eq '') {
2092: $namespace = 'ids';
2093: }
2094: foreach my $uname (keys(%ids)) {
2095: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
2096: if ($uhom eq '') {
2097: $uhom=&homeserver($uname,$udom);
2098: }
2099: if ($uhom ne 'no_host') {
2100: my $esc_unam=&escape($uname);
2101: if ($namespace eq 'ids') {
2102: my $id=&escape($ids{$uname});
2103: $id=~tr/A-Z/a-z/;
2104: my $esc_unam=&escape($uname);
2105: $servers{$uhom}.=$id.'='.$esc_unam.'&';
2106: } else {
2107: my @currids = split(/,/,$ids{$uname});
2108: foreach my $id (@currids) {
2109: $byid{$uhom}{$id} .= $uname.',';
2110: }
2111: }
2112: }
2113: }
2114: if ($namespace eq 'clickers') {
2115: foreach my $server (keys(%byid)) {
2116: if (ref($byid{$server}) eq 'HASH') {
2117: foreach my $id (keys(%{$byid{$server}})) {
2118: $byid{$server} =~ s/,$//;
2119: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2120: }
2121: }
2122: }
2123: }
2124: foreach my $server (keys(%servers)) {
2125: $servers{$server} =~ s/\&$//;
2126: if ($namespace eq 'ids') {
2127: &critical('idput:'.$udom.':'.$servers{$server},$server);
2128: } else {
2129: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2130: }
2131: }
2132: }
2133:
2134: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2135:
2136: sub iddel {
2137: my ($udom,$idshashref,$uhome,$namespace)=@_;
2138: my %result=();
2139: my %ids=();
2140: my %byid = ();
2141: if (ref($idshashref) eq 'HASH') {
2142: %ids=%{$idshashref};
2143: } else {
2144: return %result;
2145: }
2146: if ($namespace eq '') {
2147: $namespace = 'ids';
2148: }
2149: my %servers=();
2150: while (my ($id,$unamestr) = each(%ids)) {
2151: if ($namespace eq 'ids') {
2152: my $uhom = $uhome;
2153: if ($uhom eq '') {
2154: $uhom=&homeserver($unamestr,$udom);
2155: }
2156: if ($uhom ne 'no_host') {
2157: $servers{$uhom}.='&'.&escape($id);
2158: }
2159: } else {
2160: my @curritems = split(/,/,$ids{$id});
2161: foreach my $uname (@curritems) {
2162: my $uhom = $uhome;
2163: if ($uhom eq '') {
2164: $uhom=&homeserver($uname,$udom);
2165: }
2166: if ($uhom ne 'no_host') {
2167: $byid{$uhom}{$id} .= $uname.',';
2168: }
2169: }
2170: }
2171: }
2172: if ($namespace eq 'clickers') {
2173: foreach my $server (keys(%byid)) {
2174: if (ref($byid{$server}) eq 'HASH') {
2175: foreach my $id (keys(%{$byid{$server}})) {
2176: $byid{$server}{$id} =~ s/,$//;
2177: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2178: }
2179: }
2180: }
2181: }
2182: foreach my $server (keys(%servers)) {
2183: $servers{$server} =~ s/\&$//;
2184: if ($namespace eq 'ids') {
2185: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2186: } elsif ($namespace eq 'clickers') {
2187: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2188: }
2189: }
2190: return %result;
2191: }
2192:
2193: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2194:
2195: sub updateclickers {
2196: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2197: my %clickers;
2198: if (ref($idshashref) eq 'HASH') {
2199: %clickers=%{$idshashref};
2200: } else {
2201: return;
2202: }
2203: my $items='';
2204: foreach my $item (keys(%clickers)) {
2205: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2206: }
2207: $items=~s/\&$//;
2208: my $request = "updateclickers:$udom:$action:$items";
2209: if ($critical) {
2210: return &critical($request,$uhome);
2211: } else {
2212: return &reply($request,$uhome);
2213: }
2214: }
2215:
2216: # ------------------------------dump from db file owned by domainconfig user
2217: sub dump_dom {
2218: my ($namespace, $udom, $regexp) = @_;
2219:
2220: $udom ||= $env{'user.domain'};
2221:
2222: return () unless $udom;
2223:
2224: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2225: }
2226:
2227: # ------------------------------------------ get items from domain db files
2228:
2229: sub get_dom {
2230: my ($namespace,$storearr,$udom,$uhome,$encrypt)=@_;
2231: return if ($udom eq 'public');
2232: my $items='';
2233: foreach my $item (@$storearr) {
2234: $items.=&escape($item).'&';
2235: }
2236: $items=~s/\&$//;
2237: if (!$udom) {
2238: $udom=$env{'user.domain'};
2239: return if ($udom eq 'public');
2240: if (defined(&domain($udom,'primary'))) {
2241: $uhome=&domain($udom,'primary');
2242: } else {
2243: undef($uhome);
2244: }
2245: } else {
2246: if (!$uhome) {
2247: if (defined(&domain($udom,'primary'))) {
2248: $uhome=&domain($udom,'primary');
2249: }
2250: }
2251: }
2252: if ($udom && $uhome && ($uhome ne 'no_host')) {
2253: my $rep;
2254: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
2255: # domain information is hosted on this machine
2256: $rep = &LONCAPA::Lond::get_dom("getdom:$udom:$namespace:$items");
2257: } else {
2258: if ($encrypt) {
2259: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2260: } else {
2261: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2262: }
2263: }
2264: my %returnhash;
2265: if ($rep eq '' || $rep =~ /^error: 2 /) {
2266: return %returnhash;
2267: }
2268: my @pairs=split(/\&/,$rep);
2269: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2270: return @pairs;
2271: }
2272: my $i=0;
2273: foreach my $item (@$storearr) {
2274: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2275: $i++;
2276: }
2277: return %returnhash;
2278: } else {
2279: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2280: }
2281: }
2282:
2283: # -------------------------------------------- put items in domain db files
2284:
2285: sub put_dom {
2286: my ($namespace,$storehash,$udom,$uhome,$encrypt)=@_;
2287: if (!$udom) {
2288: $udom=$env{'user.domain'};
2289: if (defined(&domain($udom,'primary'))) {
2290: $uhome=&domain($udom,'primary');
2291: } else {
2292: undef($uhome);
2293: }
2294: } else {
2295: if (!$uhome) {
2296: if (defined(&domain($udom,'primary'))) {
2297: $uhome=&domain($udom,'primary');
2298: }
2299: }
2300: }
2301: if ($udom && $uhome && ($uhome ne 'no_host')) {
2302: my $items='';
2303: foreach my $item (keys(%$storehash)) {
2304: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2305: }
2306: $items=~s/\&$//;
2307: if ($encrypt) {
2308: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2309: } else {
2310: return &reply("putdom:$udom:$namespace:$items",$uhome);
2311: }
2312: } else {
2313: &logthis("put_dom failed - no homeserver and/or domain");
2314: }
2315: }
2316:
2317: # --------------------- newput for items in db file owned by domainconfig user
2318: sub newput_dom {
2319: my ($namespace,$storehash,$udom) = @_;
2320: my $result;
2321: if (!$udom) {
2322: $udom=$env{'user.domain'};
2323: }
2324: if ($udom) {
2325: my $uname = &get_domainconfiguser($udom);
2326: $result = &newput($namespace,$storehash,$udom,$uname);
2327: }
2328: return $result;
2329: }
2330:
2331: # --------------------- delete for items in db file owned by domainconfig user
2332: sub del_dom {
2333: my ($namespace,$storearr,$udom)=@_;
2334: if (ref($storearr) eq 'ARRAY') {
2335: if (!$udom) {
2336: $udom=$env{'user.domain'};
2337: }
2338: if ($udom) {
2339: my $uname = &get_domainconfiguser($udom);
2340: return &del($namespace,$storearr,$udom,$uname);
2341: }
2342: }
2343: }
2344:
2345: sub store_dom {
2346: my ($storehash,$id,$namespace,$dom,$home,$encrypt) = @_;
2347: $$storehash{'ip'}=&get_requestor_ip();
2348: $$storehash{'host'}=$perlvar{'lonHostID'};
2349: my $namevalue='';
2350: foreach my $key (keys(%{$storehash})) {
2351: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2352: }
2353: $namevalue=~s/\&$//;
2354: if (grep { $_ eq $home } current_machine_ids()) {
2355: return LONCAPA::Lond::store_dom("storedom:$dom:$namespace:$id:$namevalue");
2356: } else {
2357: if ($namespace eq 'private') {
2358: return 'refused';
2359: } elsif ($encrypt) {
2360: return reply("encrypt:storedom:$dom:$namespace:$id:$namevalue",$home);
2361: } else {
2362: return reply("storedom:$dom:$namespace:$id:$namevalue",$home);
2363: }
2364: }
2365: }
2366:
2367: sub restore_dom {
2368: my ($id,$namespace,$dom,$home,$encrypt) = @_;
2369: my $answer;
2370: if (grep { $_ eq $home } current_machine_ids()) {
2371: $answer = LONCAPA::Lond::restore_dom("restoredom:$dom:$namespace:$id");
2372: } elsif ($namespace ne 'private') {
2373: if ($encrypt) {
2374: $answer=&reply("encrypt:restoredom:$dom:$namespace:$id",$home);
2375: } else {
2376: $answer=&reply("restoredom:$dom:$namespace:$id",$home);
2377: }
2378: }
2379: my %returnhash=();
2380: unless (($answer eq '') || ($answer eq 'con_lost') || ($answer eq 'refused') ||
2381: ($answer eq 'unknown_cmd') || ($answer eq 'rejected')) {
2382: foreach my $line (split(/\&/,$answer)) {
2383: my ($name,$value)=split(/\=/,$line);
2384: $returnhash{&unescape($name)}=&thaw_unescape($value);
2385: }
2386: my $version;
2387: for ($version=1;$version<=$returnhash{'version'};$version++) {
2388: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
2389: $returnhash{$item}=$returnhash{$version.':'.$item};
2390: }
2391: }
2392: }
2393: return %returnhash;
2394: }
2395:
2396: # ----------------------------------construct domainconfig user for a domain
2397: sub get_domainconfiguser {
2398: my ($udom) = @_;
2399: return $udom.'-domainconfig';
2400: }
2401:
2402: sub retrieve_inst_usertypes {
2403: my ($udom) = @_;
2404: my (%returnhash,@order);
2405: my %domdefs = &get_domain_defaults($udom);
2406: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2407: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2408: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2409: } else {
2410: if (defined(&domain($udom,'primary'))) {
2411: my $uhome=&domain($udom,'primary');
2412: my $rep=&reply("inst_usertypes:$udom",$uhome);
2413: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2414: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2415: return (\%returnhash,\@order);
2416: }
2417: my ($hashitems,$orderitems) = split(/:/,$rep);
2418: my @pairs=split(/\&/,$hashitems);
2419: foreach my $item (@pairs) {
2420: my ($key,$value)=split(/=/,$item,2);
2421: $key = &unescape($key);
2422: next if ($key =~ /^error: 2 /);
2423: $returnhash{$key}=&thaw_unescape($value);
2424: }
2425: my @esc_order = split(/\&/,$orderitems);
2426: foreach my $item (@esc_order) {
2427: push(@order,&unescape($item));
2428: }
2429: } else {
2430: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2431: }
2432: return (\%returnhash,\@order);
2433: }
2434: }
2435:
2436: sub is_domainimage {
2437: my ($url) = @_;
2438: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo|login)/+[^/]-) {
2439: if (&domain($1) ne '') {
2440: return '1';
2441: }
2442: }
2443: return;
2444: }
2445:
2446: sub inst_directory_query {
2447: my ($srch) = @_;
2448: my $udom = $srch->{'srchdomain'};
2449: my %results;
2450: my $homeserver = &domain($udom,'primary');
2451: my $outcome;
2452: if ($homeserver ne '') {
2453: unless ($homeserver eq $perlvar{'lonHostID'}) {
2454: if ($srch->{'srchby'} eq 'email') {
2455: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2456: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2457: if (($major eq '' && $minor eq '') || ($major < 2) ||
2458: (($major == 2) && ($minor < 12))) {
2459: return;
2460: }
2461: }
2462: }
2463: my $queryid=&reply("querysend:instdirsearch:".
2464: &escape($srch->{'srchby'}).':'.
2465: &escape($srch->{'srchterm'}).':'.
2466: &escape($srch->{'srchtype'}),$homeserver);
2467: my $host=&hostname($homeserver);
2468: if ($queryid !~/^\Q$host\E\_/) {
2469: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2470: return;
2471: }
2472: my $response = &get_query_reply($queryid);
2473: my $maxtries = 5;
2474: my $tries = 1;
2475: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2476: $response = &get_query_reply($queryid);
2477: $tries ++;
2478: }
2479:
2480: if (!&error($response) && $response ne 'refused') {
2481: if ($response eq 'unavailable') {
2482: $outcome = $response;
2483: } else {
2484: $outcome = 'ok';
2485: my @matches = split(/\n/,$response);
2486: foreach my $match (@matches) {
2487: my ($key,$value) = split(/=/,$match);
2488: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2489: }
2490: }
2491: }
2492: }
2493: return ($outcome,%results);
2494: }
2495:
2496: sub usersearch {
2497: my ($srch) = @_;
2498: my $dom = $srch->{'srchdomain'};
2499: my %results;
2500: my %libserv = &all_library();
2501: my $query = 'usersearch';
2502: foreach my $tryserver (keys(%libserv)) {
2503: if (&host_domain($tryserver) eq $dom) {
2504: unless ($tryserver eq $perlvar{'lonHostID'}) {
2505: if ($srch->{'srchby'} eq 'email') {
2506: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2507: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2508: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2509: (($major == 2) && ($minor < 12)));
2510: }
2511: }
2512: my $host=&hostname($tryserver);
2513: my $queryid=
2514: &reply("querysend:".&escape($query).':'.
2515: &escape($srch->{'srchby'}).':'.
2516: &escape($srch->{'srchtype'}).':'.
2517: &escape($srch->{'srchterm'}),$tryserver);
2518: if ($queryid !~/^\Q$host\E\_/) {
2519: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2520: next;
2521: }
2522: my $reply = &get_query_reply($queryid);
2523: my $maxtries = 1;
2524: my $tries = 1;
2525: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2526: $reply = &get_query_reply($queryid);
2527: $tries ++;
2528: }
2529: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2530: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2531: } else {
2532: my @matches;
2533: if ($reply =~ /\n/) {
2534: @matches = split(/\n/,$reply);
2535: } else {
2536: @matches = split(/\&/,$reply);
2537: }
2538: foreach my $match (@matches) {
2539: my ($uname,$udom,%userhash);
2540: foreach my $entry (split(/:/,$match)) {
2541: my ($key,$value) =
2542: map {&unescape($_);} split(/=/,$entry);
2543: $userhash{$key} = $value;
2544: if ($key eq 'username') {
2545: $uname = $value;
2546: } elsif ($key eq 'domain') {
2547: $udom = $value;
2548: }
2549: }
2550: $results{$uname.':'.$udom} = \%userhash;
2551: }
2552: }
2553: }
2554: }
2555: return %results;
2556: }
2557:
2558: sub get_instuser {
2559: my ($udom,$uname,$id) = @_;
2560: my $homeserver = &domain($udom,'primary');
2561: my ($outcome,%results);
2562: if ($homeserver ne '') {
2563: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2564: &escape($id).':'.&escape($udom),$homeserver);
2565: my $host=&hostname($homeserver);
2566: if ($queryid !~/^\Q$host\E\_/) {
2567: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2568: return;
2569: }
2570: my $response = &get_query_reply($queryid);
2571: my $maxtries = 5;
2572: my $tries = 1;
2573: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2574: $response = &get_query_reply($queryid);
2575: $tries ++;
2576: }
2577: if (!&error($response) && $response ne 'refused') {
2578: if ($response eq 'unavailable') {
2579: $outcome = $response;
2580: } else {
2581: $outcome = 'ok';
2582: my @matches = split(/\n/,$response);
2583: foreach my $match (@matches) {
2584: my ($key,$value) = split(/=/,$match);
2585: $results{&unescape($key)} = &thaw_unescape($value);
2586: }
2587: }
2588: }
2589: }
2590: my %userinfo;
2591: if (ref($results{$uname}) eq 'HASH') {
2592: %userinfo = %{$results{$uname}};
2593: }
2594: return ($outcome,%userinfo);
2595: }
2596:
2597: sub get_multiple_instusers {
2598: my ($udom,$users,$caller) = @_;
2599: my ($outcome,$results);
2600: if (ref($users) eq 'HASH') {
2601: my $count = keys(%{$users});
2602: my $requested = &freeze_escape($users);
2603: my $homeserver = &domain($udom,'primary');
2604: if ($homeserver ne '') {
2605: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2606: my $host=&hostname($homeserver);
2607: if ($queryid !~/^\Q$host\E\_/) {
2608: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2609: ' for host: '.$homeserver.'in domain '.$udom);
2610: return ($outcome,$results);
2611: }
2612: my $response = &get_query_reply($queryid);
2613: my $maxtries = 5;
2614: if ($count > 100) {
2615: $maxtries = 1+int($count/20);
2616: }
2617: my $tries = 1;
2618: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2619: $response = &get_query_reply($queryid);
2620: $tries ++;
2621: }
2622: if ($response eq '') {
2623: $results = {};
2624: foreach my $key (keys(%{$users})) {
2625: my ($uname,$id);
2626: if ($caller eq 'id') {
2627: $id = $key;
2628: } else {
2629: $uname = $key;
2630: }
2631: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2632: $outcome = $resp;
2633: if ($resp eq 'ok') {
2634: %{$results} = (%{$results}, %info);
2635: } else {
2636: last;
2637: }
2638: }
2639: } elsif(!&error($response) && ($response ne 'refused')) {
2640: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2641: $outcome = $response;
2642: } else {
2643: ($outcome,my $userdata) = split(/=/,$response,2);
2644: if ($outcome eq 'ok') {
2645: $results = &thaw_unescape($userdata);
2646: }
2647: }
2648: }
2649: }
2650: }
2651: return ($outcome,$results);
2652: }
2653:
2654: sub inst_rulecheck {
2655: my ($udom,$uname,$id,$item,$rules) = @_;
2656: my %returnhash;
2657: if ($udom ne '') {
2658: if (ref($rules) eq 'ARRAY') {
2659: @{$rules} = map {&escape($_);} (@{$rules});
2660: my $rulestr = join(':',@{$rules});
2661: my $homeserver=&domain($udom,'primary');
2662: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2663: my $response;
2664: if ($item eq 'username') {
2665: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2666: ':'.&escape($uname).':'.$rulestr,
2667: $homeserver));
2668: } elsif ($item eq 'id') {
2669: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2670: ':'.&escape($id).':'.$rulestr,
2671: $homeserver));
2672: } elsif ($item eq 'selfcreate') {
2673: $response=&unescape(&reply('instselfcreatecheck:'.
2674: &escape($udom).':'.&escape($uname).
2675: ':'.$rulestr,$homeserver));
2676: } elsif ($item eq 'unamemap') {
2677: $response=&unescape(&reply('instunamemapcheck:'.
2678: &escape($udom).':'.&escape($uname).
2679: ':'.$rulestr,$homeserver));
2680: }
2681: if ($response ne 'refused') {
2682: my @pairs=split(/\&/,$response);
2683: foreach my $item (@pairs) {
2684: my ($key,$value)=split(/=/,$item,2);
2685: $key = &unescape($key);
2686: next if ($key =~ /^error: 2 /);
2687: $returnhash{$key}=&thaw_unescape($value);
2688: }
2689: }
2690: }
2691: }
2692: }
2693: return %returnhash;
2694: }
2695:
2696: sub inst_userrules {
2697: my ($udom,$check) = @_;
2698: my (%ruleshash,@ruleorder);
2699: if ($udom ne '') {
2700: my $homeserver=&domain($udom,'primary');
2701: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2702: my $response;
2703: if ($check eq 'id') {
2704: $response=&reply('instidrules:'.&escape($udom),
2705: $homeserver);
2706: } elsif ($check eq 'email') {
2707: $response=&reply('instemailrules:'.&escape($udom),
2708: $homeserver);
2709: } elsif ($check eq 'unamemap') {
2710: $response=&reply('unamemaprules:'.&escape($udom),
2711: $homeserver);
2712: } else {
2713: $response=&reply('instuserrules:'.&escape($udom),
2714: $homeserver);
2715: }
2716: if (($response ne 'refused') && ($response ne 'error') &&
2717: ($response ne 'unknown_cmd') &&
2718: ($response ne 'no_such_host')) {
2719: my ($hashitems,$orderitems) = split(/:/,$response);
2720: my @pairs=split(/\&/,$hashitems);
2721: foreach my $item (@pairs) {
2722: my ($key,$value)=split(/=/,$item,2);
2723: $key = &unescape($key);
2724: next if ($key =~ /^error: 2 /);
2725: $ruleshash{$key}=&thaw_unescape($value);
2726: }
2727: my @esc_order = split(/\&/,$orderitems);
2728: foreach my $item (@esc_order) {
2729: push(@ruleorder,&unescape($item));
2730: }
2731: }
2732: }
2733: }
2734: return (\%ruleshash,\@ruleorder);
2735: }
2736:
2737: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2738:
2739: sub get_domain_defaults {
2740: my ($domain,$ignore_cache) = @_;
2741: return if (($domain eq '') || ($domain eq 'public'));
2742: my $cachetime = 60*60*24;
2743: unless ($ignore_cache) {
2744: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2745: if (defined($cached)) {
2746: if (ref($result) eq 'HASH') {
2747: return %{$result};
2748: }
2749: }
2750: }
2751: my %domdefaults;
2752: my %domconfig =
2753: &get_dom('configuration',['defaults','quotas',
2754: 'requestcourses','inststatus',
2755: 'coursedefaults','usersessions',
2756: 'requestauthor','selfenrollment',
2757: 'coursecategories','ssl','autoenroll',
2758: 'trust','helpsettings','wafproxy',
2759: 'ltisec','toolsec','domexttool',
2760: 'exttool','privacy'],$domain);
2761: my @coursetypes = ('official','unofficial','community','textbook','placement');
2762: if (ref($domconfig{'defaults'}) eq 'HASH') {
2763: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2764: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2765: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2766: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2767: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2768: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2769: $domdefaults{'portal_def_email'} = $domconfig{'defaults'}{'portal_def_email'};
2770: $domdefaults{'portal_def_web'} = $domconfig{'defaults'}{'portal_def_web'};
2771: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2772: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2773: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2774: $domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
2775: } else {
2776: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2777: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2778: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2779: }
2780: if (ref($domconfig{'quotas'}) eq 'HASH') {
2781: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2782: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2783: } else {
2784: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2785: }
2786: my @usertools = ('aboutme','blog','webdav','portfolio');
2787: foreach my $item (@usertools) {
2788: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2789: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2790: }
2791: }
2792: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2793: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2794: }
2795: }
2796: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2797: foreach my $item ('official','unofficial','community','textbook','placement') {
2798: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2799: }
2800: }
2801: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2802: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2803: }
2804: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2805: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2806: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2807: }
2808: }
2809: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2810: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2811: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2812: $domdefaults{'inline_chem'} = $domconfig{'coursedefaults'}{'inline_chem'};
2813: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2814: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2815: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2816: }
2817: foreach my $type (@coursetypes) {
2818: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2819: unless ($type eq 'community') {
2820: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2821: }
2822: }
2823: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2824: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2825: }
2826: if (ref($domconfig{'coursedefaults'}{'coursequota'}) eq 'HASH') {
2827: $domdefaults{$type.'coursequota'} = $domconfig{'coursedefaults'}{'coursequota'}{$type};
2828: }
2829: if ($domdefaults{'postsubmit'} eq 'on') {
2830: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2831: $domdefaults{$type.'postsubtimeout'} =
2832: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2833: }
2834: }
2835: if (ref($domconfig{'coursedefaults'}{'domexttool'}) eq 'HASH') {
2836: $domdefaults{$type.'domexttool'} = $domconfig{'coursedefaults'}{'domexttool'}{$type};
2837: } else {
2838: $domdefaults{$type.'domexttool'} = 1;
2839: }
2840: if (ref($domconfig{'coursedefaults'}{'exttool'}) eq 'HASH') {
2841: $domdefaults{$type.'exttool'} = $domconfig{'coursedefaults'}{'exttool'}{$type};
2842: } else {
2843: $domdefaults{$type.'exttool'} = 0;
2844: }
2845: }
2846: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2847: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2848: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2849: if (@clonecodes) {
2850: $domdefaults{'canclone'} = join('+',@clonecodes);
2851: }
2852: }
2853: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2854: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2855: }
2856: if ($domconfig{'coursedefaults'}{'texengine'}) {
2857: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2858: }
2859: if (exists($domconfig{'coursedefaults'}{'ltiauth'})) {
2860: $domdefaults{'crsltiauth'} = $domconfig{'coursedefaults'}{'ltiauth'};
2861: }
2862: }
2863: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2864: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2865: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2866: }
2867: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2868: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2869: }
2870: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2871: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2872: }
2873: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2874: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2875: }
2876: }
2877: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2878: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2879: my @settings = ('types','registered','enroll_dates','access_dates','section',
2880: 'approval','limit');
2881: foreach my $type (@coursetypes) {
2882: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2883: my @mgrdc = ();
2884: foreach my $item (@settings) {
2885: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2886: push(@mgrdc,$item);
2887: }
2888: }
2889: if (@mgrdc) {
2890: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2891: }
2892: }
2893: }
2894: }
2895: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2896: foreach my $type (@coursetypes) {
2897: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2898: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2899: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2900: }
2901: }
2902: }
2903: }
2904: }
2905: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2906: $domdefaults{'catauth'} = 'std';
2907: $domdefaults{'catunauth'} = 'std';
2908: if ($domconfig{'coursecategories'}{'auth'}) {
2909: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2910: }
2911: if ($domconfig{'coursecategories'}{'unauth'}) {
2912: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2913: }
2914: }
2915: if (ref($domconfig{'ssl'}) eq 'HASH') {
2916: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2917: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2918: }
2919: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2920: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2921: }
2922: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2923: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2924: }
2925: }
2926: if (ref($domconfig{'trust'}) eq 'HASH') {
2927: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2928: foreach my $prefix (@prefixes) {
2929: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2930: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2931: }
2932: }
2933: }
2934: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2935: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2936: $domdefaults{'failsafe'} = $domconfig{'autoenroll'}{'failsafe'};
2937: }
2938: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2939: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2940: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2941: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2942: }
2943: }
2944: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2945: foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
2946: if ($domconfig{'wafproxy'}{$item}) {
2947: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2948: }
2949: }
2950: }
2951: if (ref($domconfig{'ltisec'}) eq 'HASH') {
2952: if (ref($domconfig{'ltisec'}{'encrypt'}) eq 'HASH') {
2953: $domdefaults{'linkprotenc_crs'} = $domconfig{'ltisec'}{'encrypt'}{'crs'};
2954: $domdefaults{'linkprotenc_dom'} = $domconfig{'ltisec'}{'encrypt'}{'dom'};
2955: $domdefaults{'ltienc_consumers'} = $domconfig{'ltisec'}{'encrypt'}{'consumers'};
2956: }
2957: if (ref($domconfig{'ltisec'}{'private'}) eq 'HASH') {
2958: if (ref($domconfig{'ltisec'}{'private'}{'keys'}) eq 'ARRAY') {
2959: $domdefaults{'ltiprivhosts'} = $domconfig{'ltisec'}{'private'}{'keys'};
2960: }
2961: }
2962: }
2963: if (ref($domconfig{'toolsec'}) eq 'HASH') {
2964: if (ref($domconfig{'toolsec'}{'encrypt'}) eq 'HASH') {
2965: $domdefaults{'toolenc_crs'} = $domconfig{'toolsec'}{'encrypt'}{'crs'};
2966: $domdefaults{'toolenc_dom'} = $domconfig{'toolsec'}{'encrypt'}{'dom'};
2967: }
2968: if (ref($domconfig{'toolsec'}{'private'}) eq 'HASH') {
2969: if (ref($domconfig{'toolsec'}{'private'}{'keys'}) eq 'ARRAY') {
2970: $domdefaults{'toolprivhosts'} = $domconfig{'toolsec'}{'private'}{'keys'};
2971: }
2972: }
2973: }
2974: if (ref($domconfig{'privacy'}) eq 'HASH') {
2975: if (ref($domconfig{'privacy'}{'approval'}) eq 'HASH') {
2976: foreach my $domtype ('instdom','extdom') {
2977: if (ref($domconfig{'privacy'}{'approval'}{$domtype}) eq 'HASH') {
2978: foreach my $roletype ('domain','author','course','community') {
2979: if ($domconfig{'privacy'}{'approval'}{$domtype}{$roletype} eq 'user') {
2980: $domdefaults{'userapprovals'} = 1;
2981: last;
2982: }
2983: }
2984: }
2985: last if ($domdefaults{'userapprovals'});
2986: }
2987: }
2988: }
2989: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2990: return %domdefaults;
2991: }
2992:
2993: sub get_dom_cats {
2994: my ($dom) = @_;
2995: return unless (&domain($dom));
2996: my ($cats,$cached)=&is_cached_new('cats',$dom);
2997: unless (defined($cached)) {
2998: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2999: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
3000: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
3001: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
3002: } else {
3003: $cats = {};
3004: }
3005: } else {
3006: $cats = {};
3007: }
3008: &do_cache_new('cats',$dom,$cats,3600);
3009: }
3010: return $cats;
3011: }
3012:
3013: sub get_dom_instcats {
3014: my ($dom) = @_;
3015: return unless (&domain($dom));
3016: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
3017: unless (defined($cached)) {
3018: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
3019: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
3020: if ($totcodes > 0) {
3021: my $caller = 'global';
3022: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
3023: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
3024: $instcats = {
3025: totcodes => $totcodes,
3026: codes => \%codes,
3027: codetitles => \@codetitles,
3028: cat_titles => \%cat_titles,
3029: cat_order => \%cat_order,
3030: };
3031: &do_cache_new('instcats',$dom,$instcats,3600);
3032: }
3033: }
3034: }
3035: return $instcats;
3036: }
3037:
3038: sub retrieve_instcodes {
3039: my ($coursecodes,$dom) = @_;
3040: my $totcodes;
3041: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
3042: foreach my $course (keys(%courses)) {
3043: if (ref($courses{$course}) eq 'HASH') {
3044: if ($courses{$course}{'inst_code'} ne '') {
3045: $$coursecodes{$course} = $courses{$course}{'inst_code'};
3046: $totcodes ++;
3047: }
3048: }
3049: }
3050: return $totcodes;
3051: }
3052:
3053: sub course_portal_url {
3054: my ($cnum,$cdom,$r) = @_;
3055: my $chome = &homeserver($cnum,$cdom);
3056: my $hostname = &hostname($chome);
3057: my $protocol = $protocol{$chome};
3058: $protocol = 'http' if ($protocol ne 'https');
3059: my %domdefaults = &get_domain_defaults($cdom);
3060: my $firsturl;
3061: if ($domdefaults{'portal_def'}) {
3062: $firsturl = $domdefaults{'portal_def'};
3063: } else {
3064: my $alias = &use_proxy_alias($r,$chome);
3065: $hostname = $alias if ($alias ne '');
3066: $firsturl = $protocol.'://'.$hostname;
3067: }
3068: return $firsturl;
3069: }
3070:
3071: sub url_prefix {
3072: my ($r,$dom,$home,$context) = @_;
3073: my $prefix;
3074: my %domdefs = &get_domain_defaults($dom);
3075: if ($domdefs{'portal_def'} && $domdefs{'portal_def_'.$context}) {
3076: if ($domdefs{'portal_def'} =~ m{^(https?://[^/]+)}) {
3077: $prefix = $1;
3078: }
3079: }
3080: if ($prefix eq '') {
3081: my $hostname = &hostname($home);
3082: my $protocol = $protocol{$home};
3083: $protocol = 'http' if ($protocol{$home} ne 'https');
3084: my $alias = &use_proxy_alias($r,$home);
3085: $hostname = $alias if ($alias ne '');
3086: $prefix = $protocol.'://'.$hostname;
3087: }
3088: return $prefix;
3089: }
3090:
3091: # --------------------------------------------- Get domain config for passwords
3092:
3093: sub get_passwdconf {
3094: my ($dom) = @_;
3095: my (%passwdconf,$gotconf,$lookup);
3096: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
3097: if (defined($cached)) {
3098: if (ref($result) eq 'HASH') {
3099: %passwdconf = %{$result};
3100: $gotconf = 1;
3101: }
3102: }
3103: unless ($gotconf) {
3104: my %domconfig = &get_dom('configuration',['passwords'],$dom);
3105: if (ref($domconfig{'passwords'}) eq 'HASH') {
3106: %passwdconf = %{$domconfig{'passwords'}};
3107: }
3108: my $cachetime = 24*60*60;
3109: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
3110: }
3111: return %passwdconf;
3112: }
3113:
3114: # --------------------------------------------------- Assign a key to a student
3115:
3116: sub assign_access_key {
3117: #
3118: # a valid key looks like uname:udom#comments
3119: # comments are being appended
3120: #
3121: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
3122: $kdom=
3123: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
3124: $knum=
3125: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
3126: $cdom=
3127: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3128: $cnum=
3129: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3130: $udom=$env{'user.name'} unless (defined($udom));
3131: $uname=$env{'user.domain'} unless (defined($uname));
3132: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
3133: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
3134: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
3135: # assigned to this person
3136: # - this should not happen,
3137: # unless something went wrong
3138: # the first time around
3139: # ready to assign
3140: $logentry=$1.'; '.$logentry;
3141: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
3142: $kdom,$knum) eq 'ok') {
3143: # key now belongs to user
3144: my $envkey='key.'.$cdom.'_'.$cnum;
3145: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
3146: &appenv({'environment.'.$envkey => $ckey});
3147: return 'ok';
3148: } else {
3149: return
3150: 'error: Count not permanently assign key, will need to be re-entered later.';
3151: }
3152: } else {
3153: return 'error: Could not assign key, try again later.';
3154: }
3155: } elsif (!$existing{$ckey}) {
3156: # the key does not exist
3157: return 'error: The key does not exist';
3158: } else {
3159: # the key is somebody else's
3160: return 'error: The key is already in use';
3161: }
3162: }
3163:
3164: # ------------------------------------------ put an additional comment on a key
3165:
3166: sub comment_access_key {
3167: #
3168: # a valid key looks like uname:udom#comments
3169: # comments are being appended
3170: #
3171: my ($ckey,$cdom,$cnum,$logentry)=@_;
3172: $cdom=
3173: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3174: $cnum=
3175: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3176: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3177: if ($existing{$ckey}) {
3178: $existing{$ckey}.='; '.$logentry;
3179: # ready to assign
3180: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
3181: $cdom,$cnum) eq 'ok') {
3182: return 'ok';
3183: } else {
3184: return 'error: Count not store comment.';
3185: }
3186: } else {
3187: # the key does not exist
3188: return 'error: The key does not exist';
3189: }
3190: }
3191:
3192: # ------------------------------------------------------ Generate a set of keys
3193:
3194: sub generate_access_keys {
3195: my ($number,$cdom,$cnum,$logentry)=@_;
3196: $cdom=
3197: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3198: $cnum=
3199: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3200: unless (&allowed('mky',$cdom)) { return 0; }
3201: unless (($cdom) && ($cnum)) { return 0; }
3202: if ($number>10000) { return 0; }
3203: sleep(2); # make sure don't get same seed twice
3204: srand(time()^($$+($$<<15))); # from "Programming Perl"
3205: my $total=0;
3206: for (my $i=1;$i<=$number;$i++) {
3207: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
3208: sprintf("%lx",int(100000*rand)).'-'.
3209: sprintf("%lx",int(100000*rand));
3210: $newkey=~s/1/g/g; # folks mix up 1 and l
3211: $newkey=~s/0/h/g; # and also 0 and O
3212: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
3213: if ($existing{$newkey}) {
3214: $i--;
3215: } else {
3216: if (&put('accesskeys',
3217: { $newkey => '# generated '.localtime().
3218: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
3219: '; '.$logentry },
3220: $cdom,$cnum) eq 'ok') {
3221: $total++;
3222: }
3223: }
3224: }
3225: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3226: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3227: return $total;
3228: }
3229:
3230: # ------------------------------------------------------- Validate an accesskey
3231:
3232: sub validate_access_key {
3233: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3234: $cdom=
3235: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3236: $cnum=
3237: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3238: $udom=$env{'user.domain'} unless (defined($udom));
3239: $uname=$env{'user.name'} unless (defined($uname));
3240: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3241: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3242: }
3243:
3244: # ------------------------------------- Find the section of student in a course
3245: sub devalidate_getsection_cache {
3246: my ($udom,$unam,$courseid)=@_;
3247: my $hashid="$udom:$unam:$courseid";
3248: &devalidate_cache_new('getsection',$hashid);
3249: }
3250:
3251: sub courseid_to_courseurl {
3252: my ($courseid) = @_;
3253: #already url style courseid
3254: return $courseid if ($courseid =~ m{^/});
3255:
3256: if (exists($env{'course.'.$courseid.'.num'})) {
3257: my $cnum = $env{'course.'.$courseid.'.num'};
3258: my $cdom = $env{'course.'.$courseid.'.domain'};
3259: return "/$cdom/$cnum";
3260: }
3261:
3262: my %courseinfo=&coursedescription($courseid);
3263: if (exists($courseinfo{'num'})) {
3264: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3265: }
3266:
3267: return undef;
3268: }
3269:
3270: sub getsection {
3271: my ($udom,$unam,$courseid)=@_;
3272: my $cachetime=1800;
3273:
3274: my $hashid="$udom:$unam:$courseid";
3275: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3276: if (defined($cached)) { return $result; }
3277:
3278: my %Pending;
3279: my %Expired;
3280: #
3281: # Each role can either have not started yet (pending), be active,
3282: # or have expired.
3283: #
3284: # If there is an active role, we are done.
3285: #
3286: # If there is more than one role which has not started yet,
3287: # choose the one which will start sooner
3288: # If there is one role which has not started yet, return it.
3289: #
3290: # If there is more than one expired role, choose the one which ended last.
3291: # If there is a role which has expired, return it.
3292: #
3293: $courseid = &courseid_to_courseurl($courseid);
3294: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3295: foreach my $key (keys(%roleshash)) {
3296: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3297: my $section=$1;
3298: if ($key eq $courseid.'_st') { $section=''; }
3299: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3300: my $now=time;
3301: if (defined($end) && $end && ($now > $end)) {
3302: $Expired{$end}=$section;
3303: next;
3304: }
3305: if (defined($start) && $start && ($now < $start)) {
3306: $Pending{$start}=$section;
3307: next;
3308: }
3309: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3310: }
3311: #
3312: # Presumedly there will be few matching roles from the above
3313: # loop and the sorting time will be negligible.
3314: if (scalar(keys(%Pending))) {
3315: my ($time) = sort {$a <=> $b} keys(%Pending);
3316: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3317: }
3318: if (scalar(keys(%Expired))) {
3319: my @sorted = sort {$a <=> $b} keys(%Expired);
3320: my $time = pop(@sorted);
3321: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3322: }
3323: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3324: }
3325:
3326: sub save_cache {
3327: &purge_remembered();
3328: #&Apache::loncommon::validate_page();
3329: undef(%env);
3330: undef($env_loaded);
3331: }
3332:
3333: my $to_remember=-1;
3334: my %remembered;
3335: my %accessed;
3336: my $kicks=0;
3337: my $hits=0;
3338: sub make_key {
3339: my ($name,$id) = @_;
3340: if (length($id) > 65
3341: && length(&escape($id)) > 200) {
3342: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3343: }
3344: return &escape($name.':'.$id);
3345: }
3346:
3347: sub devalidate_cache_new {
3348: my ($name,$id,$debug) = @_;
3349: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3350: my $remembered_id=$name.':'.$id;
3351: $id=&make_key($name,$id);
3352: $memcache->delete($id);
3353: delete($remembered{$remembered_id});
3354: delete($accessed{$remembered_id});
3355: }
3356:
3357: sub is_cached_new {
3358: my ($name,$id,$debug) = @_;
3359: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3360: if (exists($remembered{$remembered_id})) {
3361: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3362: $accessed{$remembered_id}=[&gettimeofday()];
3363: $hits++;
3364: return ($remembered{$remembered_id},1);
3365: }
3366: $id=&make_key($name,$id);
3367: my $value = $memcache->get($id);
3368: if (!(defined($value))) {
3369: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3370: return (undef,undef);
3371: }
3372: if ($value eq '__undef__') {
3373: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3374: $value=undef;
3375: }
3376: &make_room($remembered_id,$value,$debug);
3377: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3378: return ($value,1);
3379: }
3380:
3381: sub do_cache_new {
3382: my ($name,$id,$value,$time,$debug) = @_;
3383: my $remembered_id=$name.':'.$id;
3384: $id=&make_key($name,$id);
3385: my $setvalue=$value;
3386: if (!defined($setvalue)) {
3387: $setvalue='__undef__';
3388: }
3389: if (!defined($time) ) {
3390: $time=600;
3391: }
3392: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3393: my $result = $memcache->set($id,$setvalue,$time);
3394: if (! $result) {
3395: &logthis("caching of id -> $id failed");
3396: $memcache->disconnect_all();
3397: }
3398: # need to make a copy of $value
3399: &make_room($remembered_id,$value,$debug);
3400: return $value;
3401: }
3402:
3403: sub make_room {
3404: my ($remembered_id,$value,$debug)=@_;
3405:
3406: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3407: : $value;
3408: if ($to_remember<0) { return; }
3409: $accessed{$remembered_id}=[&gettimeofday()];
3410: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3411: my $to_kick;
3412: my $max_time=0;
3413: foreach my $other (keys(%accessed)) {
3414: if (&tv_interval($accessed{$other}) > $max_time) {
3415: $to_kick=$other;
3416: $max_time=&tv_interval($accessed{$other});
3417: }
3418: }
3419: delete($remembered{$to_kick});
3420: delete($accessed{$to_kick});
3421: $kicks++;
3422: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3423: return;
3424: }
3425:
3426: sub purge_remembered {
3427: #&logthis("Tossing ".scalar(keys(%remembered)));
3428: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3429: undef(%remembered);
3430: undef(%accessed);
3431: }
3432: # ------------------------------------- Read an entry from a user's environment
3433:
3434: sub userenvironment {
3435: my ($udom,$unam,@what)=@_;
3436: my $items;
3437: foreach my $item (@what) {
3438: $items.=&escape($item).'&';
3439: }
3440: $items=~s/\&$//;
3441: my %returnhash=();
3442: my $uhome = &homeserver($unam,$udom);
3443: unless ($uhome eq 'no_host') {
3444: my @answer=split(/\&/,
3445: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3446: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3447: return %returnhash;
3448: }
3449: my $i;
3450: for ($i=0;$i<=$#what;$i++) {
3451: $returnhash{$what[$i]}=&unescape($answer[$i]);
3452: }
3453: }
3454: return %returnhash;
3455: }
3456:
3457: # ---------------------------------------------------------- Get a studentphoto
3458: sub studentphoto {
3459: my ($udom,$unam,$ext) = @_;
3460: my $home=&homeserver($unam,$udom);
3461: if (defined($env{'request.course.id'})) {
3462: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3463: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3464: return(&retrievestudentphoto($udom,$unam,$ext));
3465: } else {
3466: my ($result,$perm_reqd)=
3467: &auto_photo_permission($unam,$udom);
3468: if ($result eq 'ok') {
3469: if (!($perm_reqd eq 'yes')) {
3470: return(&retrievestudentphoto($udom,$unam,$ext));
3471: }
3472: }
3473: }
3474: }
3475: } else {
3476: my ($result,$perm_reqd) =
3477: &auto_photo_permission($unam,$udom);
3478: if ($result eq 'ok') {
3479: if (!($perm_reqd eq 'yes')) {
3480: return(&retrievestudentphoto($udom,$unam,$ext));
3481: }
3482: }
3483: }
3484: return '/adm/lonKaputt/lonlogo_broken.gif';
3485: }
3486:
3487: sub retrievestudentphoto {
3488: my ($udom,$unam,$ext,$type) = @_;
3489: my $home=&homeserver($unam,$udom);
3490: my $ret=&reply("studentphoto:$udom:$unam:$ext:$type",$home);
3491: if ($ret eq 'ok') {
3492: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3493: if ($type eq 'thumbnail') {
3494: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3495: }
3496: my $tokenurl=&tokenwrapper($url);
3497: return $tokenurl;
3498: } else {
3499: if ($type eq 'thumbnail') {
3500: return '/adm/lonKaputt/genericstudent_tn.gif';
3501: } else {
3502: return '/adm/lonKaputt/lonlogo_broken.gif';
3503: }
3504: }
3505: }
3506:
3507: # -------------------------------------------------------------------- New chat
3508:
3509: sub chatsend {
3510: my ($newentry,$anon,$group)=@_;
3511: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3512: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3513: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3514: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3515: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3516: &escape($newentry)).':'.$group,$chome);
3517: }
3518:
3519: # ------------------------------------------ Find current version of a resource
3520:
3521: sub getversion {
3522: my $fname=&clutter(shift);
3523: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3524: return ¤tversion(&filelocation('',$fname));
3525: }
3526:
3527: sub currentversion {
3528: my $fname=shift;
3529: my $author=$fname;
3530: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3531: my ($udom,$uname)=split(/\//,$author);
3532: my $home=&homeserver($uname,$udom);
3533: if ($home eq 'no_host') {
3534: return -1;
3535: }
3536: my $answer=&reply("currentversion:$fname",$home);
3537: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3538: return -1;
3539: }
3540: return $answer;
3541: }
3542:
3543: #
3544: # Return special version number of resource if set by override, empty otherwise
3545: #
3546: sub usedversion {
3547: my $fname=shift;
3548: unless ($fname) { $fname=$env{'request.uri'}; }
3549: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3550: if ($urlversion) { return $urlversion; }
3551: return '';
3552: }
3553:
3554: # ----------------------------- Subscribe to a resource, return URL if possible
3555:
3556: sub subscribe {
3557: my $fname=shift;
3558: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3559: $fname=~s/[\n\r]//g;
3560: my $author=$fname;
3561: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3562: my ($udom,$uname)=split(/\//,$author);
3563: my $home=homeserver($uname,$udom);
3564: if ($home eq 'no_host') {
3565: return 'not_found';
3566: }
3567: my $answer=reply("sub:$fname",$home);
3568: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3569: $answer.=' by '.$home;
3570: }
3571: return $answer;
3572: }
3573:
3574: # -------------------------------------------------------------- Replicate file
3575:
3576: sub repcopy {
3577: my $filename=shift;
3578: $filename=~s/\/+/\//g;
3579: my $londocroot = $perlvar{'lonDocRoot'};
3580: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3581: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3582: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3583: $filename=~m{^/*(uploaded|editupload)/}) {
3584: return &repcopy_userfile($filename);
3585: }
3586: $filename=~s/[\n\r]//g;
3587: my $transname="$filename.in.transfer";
3588: # FIXME: this should flock
3589: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3590: my $remoteurl=subscribe($filename);
3591: if ($remoteurl =~ /^con_lost by/) {
3592: &logthis("Subscribe returned $remoteurl: $filename");
3593: return 'unavailable';
3594: } elsif ($remoteurl eq 'not_found') {
3595: #&logthis("Subscribe returned not_found: $filename");
3596: return 'not_found';
3597: } elsif ($remoteurl =~ /^rejected by/) {
3598: &logthis("Subscribe returned $remoteurl: $filename");
3599: return 'forbidden';
3600: } elsif ($remoteurl eq 'directory') {
3601: return 'ok';
3602: } else {
3603: my $author=$filename;
3604: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3605: my ($udom,$uname)=split(/\//,$author);
3606: my $home=homeserver($uname,$udom);
3607: unless ($home eq $perlvar{'lonHostID'}) {
3608: my @parts=split(/\//,$filename);
3609: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3610: if ($path ne "$londocroot/res") {
3611: &logthis("Malconfiguration for replication: $filename");
3612: return 'bad_request';
3613: }
3614: my $count;
3615: for ($count=5;$count<$#parts;$count++) {
3616: $path.="/$parts[$count]";
3617: if ((-e $path)!=1) {
3618: mkdir($path,0777);
3619: }
3620: }
3621: my $request=new HTTP::Request('GET',"$remoteurl");
3622: my $response;
3623: if ($remoteurl =~ m{/raw/}) {
3624: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3625: } else {
3626: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3627: }
3628: if ($response->is_error()) {
3629: unlink($transname);
3630: my $message=$response->status_line;
3631: &logthis("<font color=\"blue\">WARNING:"
3632: ." LWP get: $message: $filename</font>");
3633: return 'unavailable';
3634: } else {
3635: if ($remoteurl!~/\.meta$/) {
3636: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3637: my $mresponse;
3638: if ($remoteurl =~ m{/raw/}) {
3639: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3640: } else {
3641: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3642: }
3643: if ($mresponse->is_error()) {
3644: unlink($filename.'.meta');
3645: &logthis(
3646: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3647: }
3648: }
3649: rename($transname,$filename);
3650: return 'ok';
3651: }
3652: }
3653: }
3654: }
3655:
3656: # ------------------------------------------------- Unsubscribe from a resource
3657:
3658: sub unsubscribe {
3659: my ($fname) = @_;
3660: my $answer;
3661: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3662: $fname=~s/[\n\r]//g;
3663: my $author=$fname;
3664: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3665: my ($udom,$uname)=split(/\//,$author);
3666: my $home=homeserver($uname,$udom);
3667: if ($home eq 'no_host') {
3668: $answer = 'no_host';
3669: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3670: $answer = 'home';
3671: } else {
3672: my $defdom = $perlvar{'lonDefDomain'};
3673: if (&will_trust('content',$defdom,$udom)) {
3674: $answer = reply("unsub:$fname",$home);
3675: } else {
3676: $answer = 'untrusted';
3677: }
3678: }
3679: return $answer;
3680: }
3681:
3682: # ------------------------------------------------ Get server side include body
3683: sub ssi_body {
3684: my ($filelink,%form)=@_;
3685: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3686: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3687: }
3688: my $output='';
3689: my $response;
3690: if ($filelink=~/^https?\:/) {
3691: ($output,$response)=&externalssi($filelink);
3692: } else {
3693: $filelink .= $filelink=~/\?/ ? '&' : '?';
3694: $filelink .= 'inhibitmenu=yes';
3695: ($output,$response)=&ssi($filelink,%form);
3696: }
3697: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3698: $output=~s/^.*?\<body[^\>]*\>//si;
3699: $output=~s/\<\/body\s*\>.*?$//si;
3700: if (wantarray) {
3701: return ($output, $response);
3702: } else {
3703: return $output;
3704: }
3705: }
3706:
3707: # --------------------------------------------------------- Server Side Include
3708:
3709: sub absolute_url {
3710: my ($host_name,$unalias,$keep_proto) = @_;
3711: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3712: if ($host_name eq '') {
3713: $host_name = $ENV{'SERVER_NAME'};
3714: }
3715: if ($unalias) {
3716: my $alias = &get_proxy_alias();
3717: if ($alias eq $host_name) {
3718: my $lonhost = $perlvar{'lonHostID'};
3719: my $hostname = &hostname($lonhost);
3720: my $lcproto;
3721: if (($keep_proto) || ($hostname eq '')) {
3722: $lcproto = $protocol;
3723: } else {
3724: $lcproto = $protocol{$lonhost};
3725: $lcproto = 'http' if ($lcproto ne 'https');
3726: $lcproto .= '://';
3727: }
3728: unless ($hostname eq '') {
3729: return $lcproto.$hostname;
3730: }
3731: }
3732: }
3733: return $protocol.$host_name;
3734: }
3735:
3736: #
3737: # Server side include.
3738: # Parameters:
3739: # fn Possibly encrypted resource name/id.
3740: # form Hash that describes how the rendering should be done
3741: # and other things.
3742: # Returns:
3743: # Scalar context: The content of the response.
3744: # Array context: 2 element list of the content and the full response object.
3745: #
3746: sub ssi {
3747:
3748: my ($fn,%form)=@_;
3749: my ($host,$request,$response);
3750: $host = &absolute_url('',1);
3751:
3752: $form{'no_update_last_known'}=1;
3753: &Apache::lonenc::check_encrypt(\$fn);
3754: if (%form) {
3755: $request=new HTTP::Request('POST',$host.$fn);
3756: $request->content(join('&',map {
3757: my $name = escape($_);
3758: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3759: ? join("&$name=", map {escape($_) } @{$form{$_}})
3760: : &escape($form{$_}) );
3761: } keys(%form)));
3762: } else {
3763: $request=new HTTP::Request('GET',$host.$fn);
3764: }
3765:
3766: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3767: my $lonhost = $perlvar{'lonHostID'};
3768: my $islocal;
3769: if (($env{'request.course.id'}) &&
3770: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3771: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3772: ($form{'grade_symb'} ne '') &&
3773: (&allowed('mgr',$env{'request.course.id'}.
3774: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3775: $islocal = 1;
3776: }
3777: $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3778: '','','',$islocal);
3779:
3780: if (wantarray) {
3781: return ($response->content, $response);
3782: } else {
3783: return $response->content;
3784: }
3785: }
3786:
3787: sub externalssi {
3788: my ($url)=@_;
3789: my $request=new HTTP::Request('GET',$url);
3790: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3791: if (wantarray) {
3792: return ($response->content, $response);
3793: } else {
3794: return $response->content;
3795: }
3796: }
3797:
3798:
3799: # If the local copy of a replicated resource is outdated, trigger a
3800: # connection from the homeserver to flush the delayed queue. If no update
3801: # happens, remove local copies of outdated resource (and corresponding
3802: # metadata file).
3803:
3804: sub remove_stale_resfile {
3805: my ($url) = @_;
3806: my $removed;
3807: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3808: my $audom = $1;
3809: my $auname = $2;
3810: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3811: my $homeserver = &homeserver($auname,$audom);
3812: unless (($homeserver eq 'no_host') ||
3813: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3814: my $fname = &filelocation('',$url);
3815: if (-e $fname) {
3816: my $hostname = &hostname($homeserver);
3817: if ($hostname) {
3818: my $protocol = $protocol{$homeserver};
3819: $protocol = 'http' if ($protocol ne 'https');
3820: my $uri = &declutter($url);
3821: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3822: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3823: if ($response->is_success()) {
3824: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3825: my $locmodtime = (stat($fname))[9];
3826: if ($locmodtime < $remmodtime) {
3827: my $stale;
3828: my $answer = &reply('pong',$homeserver);
3829: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3830: sleep(0.2);
3831: $locmodtime = (stat($fname))[9];
3832: if ($locmodtime < $remmodtime) {
3833: my $posstransfer = $fname.'.in.transfer';
3834: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3835: $removed = 1;
3836: } else {
3837: $stale = 1;
3838: }
3839: } else {
3840: $removed = 1;
3841: }
3842: } else {
3843: $stale = 1;
3844: }
3845: if ($stale) {
3846: if (unlink($fname)) {
3847: if ($uri!~/\.meta$/) {
3848: if (-e $fname.'.meta') {
3849: unlink($fname.'.meta');
3850: }
3851: }
3852: my $unsubresult = &unsubscribe($fname);
3853: unless ($unsubresult eq 'ok') {
3854: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3855: }
3856: $removed = 1;
3857: }
3858: }
3859: }
3860: }
3861: }
3862: }
3863: }
3864: }
3865: }
3866: return $removed;
3867: }
3868:
3869: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3870:
3871: sub allowuploaded {
3872: my ($srcurl,$url)=@_;
3873: $url=&clutter(&declutter($url));
3874: my $dir=$url;
3875: $dir=~s/\/[^\/]+$//;
3876: my %httpref=();
3877: my $httpurl=&hreflocation('',$url);
3878: $httpref{'httpref.'.$httpurl}=$srcurl;
3879: &Apache::lonnet::appenv(\%httpref);
3880: }
3881:
3882: #
3883: # Determine if the current user should be able to edit a particular resource,
3884: # when viewing in course context.
3885: # (a) When viewing resource used to determine if "Edit" item is included in
3886: # Functions.
3887: # (b) When displaying folder contents in course editor, used to determine if
3888: # "Edit" link will be displayed alongside resource.
3889: #
3890: # input: six args -- filename (decluttered), course number, course domain,
3891: # url, symb (if registered) and group (if this is a group
3892: # item -- e.g., bulletin board, group page etc.).
3893: # output: array of five scalars --
3894: # $cfile -- url for file editing if editable on current server
3895: # $home -- homeserver of resource (i.e., for author if published,
3896: # or course if uploaded.).
3897: # $switchserver -- 1 if server switch will be needed.
3898: # $forceedit -- 1 if icon/link should be to go to edit mode
3899: # $forceview -- 1 if icon/link should be to go to view mode
3900: #
3901:
3902: sub can_edit_resource {
3903: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3904: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3905: #
3906: # For aboutme pages user can only edit his/her own.
3907: #
3908: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3909: my ($sdom,$sname) = ($1,$2);
3910: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3911: $home = $env{'user.home'};
3912: $cfile = $resurl;
3913: if ($env{'form.forceedit'}) {
3914: $forceview = 1;
3915: } else {
3916: $forceedit = 1;
3917: }
3918: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3919: } else {
3920: return;
3921: }
3922: }
3923:
3924: if ($env{'request.course.id'}) {
3925: my $crsedit = &allowed('mdc',$env{'request.course.id'});
3926: if ($group ne '') {
3927: # if this is a group homepage or group bulletin board, check group privs
3928: my $allowed = 0;
3929: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3930: if ((&allowed('mdg',$env{'request.course.id'}.
3931: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3932: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3933: $allowed = 1;
3934: }
3935: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3936: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3937: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3938: $allowed = 1;
3939: }
3940: }
3941: if ($allowed) {
3942: $home=&homeserver($cnum,$cdom);
3943: if ($env{'form.forceedit'}) {
3944: $forceview = 1;
3945: } else {
3946: $forceedit = 1;
3947: }
3948: $cfile = $resurl;
3949: } else {
3950: return;
3951: }
3952: } else {
3953: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3954: unless (&allowed('opa',$env{'request.course.id'})) {
3955: return;
3956: }
3957: } elsif (!$crsedit) {
3958: if ($env{'request.role'} =~ m{^st\./$cdom/$cnum}) {
3959: #
3960: # No edit allowed where CC has switched to student role.
3961: #
3962: return;
3963: } elsif (($resurl !~ m{^/res/$match_domain/$match_username/}) ||
3964: ($resurl =~ m{^/res/lib/templates/})) {
3965: return;
3966: }
3967: }
3968: }
3969: }
3970:
3971: if ($file ne '') {
3972: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3973: if (&is_course_upload($file,$cnum,$cdom)) {
3974: $uploaded = 1;
3975: $incourse = 1;
3976: if ($file =~/\.(htm|html|css|js|txt)$/) {
3977: $cfile = &hreflocation('',$file);
3978: if ($env{'form.forceedit'}) {
3979: $forceview = 1;
3980: } else {
3981: $forceedit = 1;
3982: }
3983: }
3984: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3985: $incourse = 1;
3986: if ($env{'form.forceedit'}) {
3987: $forceview = 1;
3988: } else {
3989: $forceedit = 1;
3990: }
3991: $cfile = $resurl;
3992: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3993: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3994: $incourse = 1;
3995: if ($env{'form.forceedit'}) {
3996: $forceview = 1;
3997: } else {
3998: $forceedit = 1;
3999: }
4000: $cfile = $resurl;
4001: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
4002: $incourse = 1;
4003: $cfile = $resurl.'/smpedit';
4004: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
4005: $incourse = 1;
4006: if ($env{'form.forceedit'}) {
4007: $forceview = 1;
4008: } else {
4009: $forceedit = 1;
4010: }
4011: $cfile = $resurl;
4012: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
4013: my ($map,$id,$res) = &decode_symb($symb);
4014: if ($map =~ /\.page$/) {
4015: $incourse = 1;
4016: if ($env{'form.forceedit'}) {
4017: $forceview = 1;
4018: $cfile = $map;
4019: } else {
4020: $forceedit = 1;
4021: $cfile = '/adm/wrapper'.$resurl;
4022: }
4023: }
4024: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
4025: $incourse = 1;
4026: if ($env{'form.forceedit'}) {
4027: $forceview = 1;
4028: } else {
4029: $forceedit = 1;
4030: }
4031: $cfile = $resurl;
4032: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
4033: $incourse = 1;
4034: if ($env{'form.forceedit'}) {
4035: $forceview = 1;
4036: } else {
4037: $forceedit = 1;
4038: }
4039: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
4040: }
4041: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
4042: my $template = '/res/lib/templates/simpleproblem.problem';
4043: if (&is_on_map($template)) {
4044: $incourse = 1;
4045: $forceview = 1;
4046: $cfile = $template;
4047: }
4048: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
4049: $incourse = 1;
4050: if ($env{'form.forceedit'}) {
4051: $forceview = 1;
4052: } else {
4053: $forceedit = 1;
4054: }
4055: $cfile = $resurl;
4056: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
4057: $incourse = 1;
4058: if ($env{'form.forceedit'}) {
4059: $forceview = 1;
4060: } else {
4061: $forceedit = 1;
4062: }
4063: $cfile = $resurl;
4064: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
4065: $incourse = 1;
4066: $forceview = 1;
4067: if ($symb) {
4068: my ($map,$id,$res)=&decode_symb($symb);
4069: $env{'request.symb'} = $symb;
4070: $cfile = &clutter($res);
4071: } else {
4072: $cfile = $env{'form.suppurl'};
4073: my $escfile = &unescape($cfile);
4074: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
4075: $cfile = '/adm/wrapper'.$escfile;
4076: } else {
4077: $escfile =~ s{^http://}{};
4078: $cfile = &escape("/adm/wrapper/ext/$escfile");
4079: }
4080: }
4081: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
4082: if ($env{'form.forceedit'}) {
4083: $forceview = 1;
4084: } else {
4085: $forceedit = 1;
4086: }
4087: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
4088: }
4089: }
4090: if ($uploaded || $incourse) {
4091: $home=&homeserver($cnum,$cdom);
4092: } elsif ($file !~ m{/$}) {
4093: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
4094: $file=~s{^($match_domain/$match_username)}{/priv/$1};
4095: # Check that the user has permission to edit this resource
4096: my $setpriv = 1;
4097: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
4098: if (defined($cfudom)) {
4099: $home=&homeserver($cfuname,$cfudom);
4100: $cfile=$file;
4101: }
4102: }
4103: if (($cfile ne '') && (!$incourse || $uploaded) &&
4104: (($home ne '') && ($home ne 'no_host'))) {
4105: my @ids=¤t_machine_ids();
4106: unless (grep(/^\Q$home\E$/,@ids)) {
4107: $switchserver=1;
4108: }
4109: }
4110: }
4111: return ($cfile,$home,$switchserver,$forceedit,$forceview);
4112: }
4113:
4114: sub is_course_upload {
4115: my ($file,$cnum,$cdom) = @_;
4116: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
4117: $uploadpath =~ s{^\/}{};
4118: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
4119: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
4120: return 1;
4121: }
4122: return;
4123: }
4124:
4125: sub in_course {
4126: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
4127: if ($hideprivileged) {
4128: my $skipuser;
4129: my %coursehash = &coursedescription($cdom.'_'.$cnum);
4130: my @possdoms = ($cdom);
4131: if ($coursehash{'checkforpriv'}) {
4132: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4133: }
4134: if (&privileged($uname,$udom,\@possdoms)) {
4135: $skipuser = 1;
4136: if ($coursehash{'nothideprivileged'}) {
4137: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4138: my $user;
4139: if ($item =~ /:/) {
4140: $user = $item;
4141: } else {
4142: $user = join(':',split(/[\@]/,$item));
4143: }
4144: if ($user eq $uname.':'.$udom) {
4145: undef($skipuser);
4146: last;
4147: }
4148: }
4149: }
4150: if ($skipuser) {
4151: return 0;
4152: }
4153: }
4154: }
4155: $type ||= 'any';
4156: if (!defined($cdom) || !defined($cnum)) {
4157: my $cid = $env{'request.course.id'};
4158: $cdom = $env{'course.'.$cid.'.domain'};
4159: $cnum = $env{'course.'.$cid.'.num'};
4160: }
4161: my $typesref;
4162: if (($type eq 'any') || ($type eq 'all')) {
4163: $typesref = ['active','previous','future'];
4164: } elsif ($type eq 'previous' || $type eq 'future') {
4165: $typesref = [$type];
4166: }
4167: my %roles = &get_my_roles($uname,$udom,'userroles',
4168: $typesref,undef,[$cdom]);
4169: my ($tmp) = keys(%roles);
4170: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
4171: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
4172: if (@course_roles > 0) {
4173: return 1;
4174: }
4175: return 0;
4176: }
4177:
4178: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
4179: # input: action, courseID, current domain, intended
4180: # path to file, source of file, instruction to parse file for objects,
4181: # ref to hash for embedded objects,
4182: # ref to hash for codebase of java objects.
4183: # reference to scalar to accommodate mime type determined
4184: # from File::MMagic if $parser = parse.
4185: #
4186: # output: url to file (if action was uploaddoc),
4187: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
4188: #
4189: # Allows directory structure to be used within lonUsers/../userfiles/ for a
4190: # course.
4191: #
4192: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4193: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
4194: # course's home server.
4195: #
4196: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
4197: # be copied from $source (current location) to
4198: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4199: # and will then be copied to
4200: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
4201: # course's home server.
4202: #
4203: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4204: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
4205: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4206: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
4207: # in course's home server.
4208: #
4209:
4210: sub process_coursefile {
4211: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
4212: $mimetype)=@_;
4213: my $fetchresult;
4214: my $home=&homeserver($docuname,$docudom);
4215: if ($action eq 'propagate') {
4216: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4217: $home);
4218: } else {
4219: my $fpath = '';
4220: my $fname = $file;
4221: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4222: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4223: my $filepath = &build_filepath($fpath);
4224: if ($action eq 'copy') {
4225: if ($source eq '') {
4226: $fetchresult = 'no source file';
4227: return $fetchresult;
4228: } else {
4229: my $destination = $filepath.'/'.$fname;
4230: rename($source,$destination);
4231: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4232: $home);
4233: }
4234: } elsif ($action eq 'uploaddoc') {
4235: open(my $fh,'>',$filepath.'/'.$fname);
4236: print $fh $env{'form.'.$source};
4237: close($fh);
4238: if ($parser eq 'parse') {
4239: my $mm = new File::MMagic;
4240: my $type = $mm->checktype_filename($filepath.'/'.$fname);
4241: if ($type eq 'text/html') {
4242: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
4243: unless ($parse_result eq 'ok') {
4244: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
4245: }
4246: }
4247: if (ref($mimetype)) {
4248: $$mimetype = $type;
4249: }
4250: }
4251: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4252: $home);
4253: if ($fetchresult eq 'ok') {
4254: return '/uploaded/'.$fpath.'/'.$fname;
4255: } else {
4256: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4257: ' to host '.$home.': '.$fetchresult);
4258: return '/adm/notfound.html';
4259: }
4260: }
4261: }
4262: unless ( $fetchresult eq 'ok') {
4263: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4264: ' to host '.$home.': '.$fetchresult);
4265: }
4266: return $fetchresult;
4267: }
4268:
4269: sub build_filepath {
4270: my ($fpath) = @_;
4271: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4272: unless ($fpath eq '') {
4273: my @parts=split('/',$fpath);
4274: foreach my $part (@parts) {
4275: $filepath.= '/'.$part;
4276: if ((-e $filepath)!=1) {
4277: mkdir($filepath,0777);
4278: }
4279: }
4280: }
4281: return $filepath;
4282: }
4283:
4284: sub store_edited_file {
4285: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4286: my $file = $primary_url;
4287: $file =~ s#^/uploaded/$docudom/$docuname/##;
4288: my $fpath = '';
4289: my $fname = $file;
4290: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4291: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4292: my $filepath = &build_filepath($fpath);
4293: open(my $fh,'>',$filepath.'/'.$fname);
4294: print $fh $content;
4295: close($fh);
4296: my $home=&homeserver($docuname,$docudom);
4297: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4298: $home);
4299: if ($$fetchresult eq 'ok') {
4300: return '/uploaded/'.$fpath.'/'.$fname;
4301: } else {
4302: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4303: ' to host '.$home.': '.$$fetchresult);
4304: return '/adm/notfound.html';
4305: }
4306: }
4307:
4308: sub clean_filename {
4309: my ($fname,$args)=@_;
4310: # Replace Windows backslashes by forward slashes
4311: $fname=~s/\\/\//g;
4312: if (!$args->{'keep_path'}) {
4313: # Get rid of everything but the actual filename
4314: $fname=~s/^.*\/([^\/]+)$/$1/;
4315: }
4316: # Replace spaces by underscores
4317: $fname=~s/\s+/\_/g;
4318: # Transliterate non-ascii text to ascii
4319: my $lang = &Apache::lonlocal::current_language();
4320: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4321: # Replace all other weird characters by nothing
4322: $fname=~s{[^/\w\.\-]}{}g;
4323: # Replace all .\d. sequences with _\d. so they no longer look like version
4324: # numbers
4325: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4326: # Replace three or more adjacent underscores with one for consistency
4327: # with loncfile::filename_check() so complete url can be extracted by
4328: # lonnet::decode_symb()
4329: $fname=~s/_{3,}/_/g;
4330: return $fname;
4331: }
4332:
4333: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4334: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4335: # image with the same aspect ratio as the original, but with dimensions which do
4336: # not exceed $resizewidth and $resizeheight.
4337:
4338: sub resizeImage {
4339: my ($img_path,$resizewidth,$resizeheight) = @_;
4340: my $ima = Image::Magick->new;
4341: my $resized;
4342: if (-e $img_path) {
4343: $ima->Read($img_path);
4344: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4345: my $width = $ima->Get('width');
4346: my $height = $ima->Get('height');
4347: if ($width > $resizewidth) {
4348: my $factor = $width/$resizewidth;
4349: my $newheight = $height/$factor;
4350: $ima->Scale(width=>$resizewidth,height=>$newheight);
4351: $resized = 1;
4352: }
4353: }
4354: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4355: my $width = $ima->Get('width');
4356: my $height = $ima->Get('height');
4357: if ($height > $resizeheight) {
4358: my $factor = $height/$resizeheight;
4359: my $newwidth = $width/$factor;
4360: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4361: $resized = 1;
4362: }
4363: }
4364: if ($resized) {
4365: $ima->Write($img_path);
4366: }
4367: }
4368: return;
4369: }
4370:
4371: # --------------- Take an uploaded file and put it into the userfiles directory
4372: # input: $formname - the contents of the file are in $env{"form.$formname"}
4373: # the desired filename is in $env{"form.$formname.filename"}
4374: # $context - possible values: coursedoc, existingfile, overwrite,
4375: # canceloverwrite, scantron, toollogo or ''.
4376: # if 'coursedoc': upload to the current course
4377: # if 'existingfile': write file to tmp/overwrites directory
4378: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4379: # $context is passed as argument to &finishuserfileupload
4380: # $subdir - directory in userfile to store the file into
4381: # $parser - instruction to parse file for objects ($parser = parse) or
4382: # if context is 'scantron', $parser is hashref of csv column mapping
4383: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4384: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4385: # $allfiles - reference to hash for embedded objects
4386: # $codebase - reference to hash for codebase of java objects
4387: # $destuname - username for permanent storage of uploaded file
4388: # $destudom - domain for permanaent storage of uploaded file
4389: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4390: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4391: # $resizewidth - width (pixels) to which to resize uploaded image
4392: # $resizeheight - height (pixels) to which to resize uploaded image
4393: # $mimetype - reference to scalar to accommodate mime type determined
4394: # from File::MMagic.
4395: #
4396: # output: url of file in userspace, or error: <message>
4397: # or /adm/notfound.html if failure to upload occurse
4398:
4399: sub userfileupload {
4400: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4401: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4402: if (!defined($subdir)) { $subdir='unknown'; }
4403: my $fname=$env{'form.'.$formname.'.filename'};
4404: $fname=&clean_filename($fname);
4405: # See if there is anything left
4406: unless ($fname) { return 'error: no uploaded file'; }
4407: # If filename now begins with a . prepend unix timestamp _ milliseconds
4408: if ($fname =~ /^\./) {
4409: my ($s,$usec) = &gettimeofday();
4410: while (length($usec) < 6) {
4411: $usec = '0'.$usec;
4412: }
4413: $fname = $s.'_'.substr($usec,0,3).$fname;
4414: }
4415: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4416: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4417: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4418: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4419: my $now = time;
4420: my $filepath;
4421: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4422: $filepath = 'tmp/helprequests/'.$now;
4423: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4424: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4425: '_'.$env{'user.domain'}.'/pending';
4426: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4427: my ($docuname,$docudom);
4428: if ($destudom =~ /^$match_domain$/) {
4429: $docudom = $destudom;
4430: } else {
4431: $docudom = $env{'user.domain'};
4432: }
4433: if ($destuname =~ /^$match_username$/) {
4434: $docuname = $destuname;
4435: } else {
4436: $docuname = $env{'user.name'};
4437: }
4438: if (exists($env{'form.group'})) {
4439: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4440: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4441: }
4442: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4443: if ($context eq 'canceloverwrite') {
4444: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4445: if (-e $tempfile) {
4446: my @info = stat($tempfile);
4447: if ($info[9] eq $env{'form.timestamp'}) {
4448: unlink($tempfile);
4449: }
4450: }
4451: return;
4452: }
4453: }
4454: # Create the directory if not present
4455: my @parts=split(/\//,$filepath);
4456: my $fullpath = $perlvar{'lonDaemons'};
4457: for (my $i=0;$i<@parts;$i++) {
4458: $fullpath .= '/'.$parts[$i];
4459: if ((-e $fullpath)!=1) {
4460: mkdir($fullpath,0777);
4461: }
4462: }
4463: open(my $fh,'>',$fullpath.'/'.$fname);
4464: print $fh $env{'form.'.$formname};
4465: close($fh);
4466: if ($context eq 'existingfile') {
4467: my @info = stat($fullpath.'/'.$fname);
4468: return ($fullpath.'/'.$fname,$info[9]);
4469: } else {
4470: return $fullpath.'/'.$fname;
4471: }
4472: }
4473: if ($subdir eq 'scantron') {
4474: $fname = 'scantron_orig_'.$fname;
4475: } else {
4476: $fname="$subdir/$fname";
4477: }
4478: if ($context eq 'coursedoc') {
4479: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4480: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4481: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4482: return &finishuserfileupload($docuname,$docudom,
4483: $formname,$fname,$parser,$allfiles,
4484: $codebase,$thumbwidth,$thumbheight,
4485: $resizewidth,$resizeheight,$context,$mimetype);
4486: } else {
4487: if ($env{'form.folder'}) {
4488: $fname=$env{'form.folder'}.'/'.$fname;
4489: }
4490: return &process_coursefile('uploaddoc',$docuname,$docudom,
4491: $fname,$formname,$parser,
4492: $allfiles,$codebase,$mimetype);
4493: }
4494: } elsif (defined($destuname)) {
4495: my $docuname=$destuname;
4496: my $docudom=$destudom;
4497: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4498: $parser,$allfiles,$codebase,
4499: $thumbwidth,$thumbheight,
4500: $resizewidth,$resizeheight,$context,$mimetype);
4501: } else {
4502: my $docuname=$env{'user.name'};
4503: my $docudom=$env{'user.domain'};
4504: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4505: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4506: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4507: }
4508: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4509: $parser,$allfiles,$codebase,
4510: $thumbwidth,$thumbheight,
4511: $resizewidth,$resizeheight,$context,$mimetype);
4512: }
4513: }
4514:
4515: sub finishuserfileupload {
4516: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4517: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4518: my $path=$docudom.'/'.$docuname.'/';
4519: my $filepath=$perlvar{'lonDocRoot'};
4520:
4521: my ($fnamepath,$file,$fetchthumb);
4522: $file=$fname;
4523: if ($fname=~m|/|) {
4524: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4525: $path.=$fnamepath.'/';
4526: }
4527: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4528: my $count;
4529: for ($count=4;$count<=$#parts;$count++) {
4530: $filepath.="/$parts[$count]";
4531: if ((-e $filepath)!=1) {
4532: mkdir($filepath,0777);
4533: }
4534: }
4535:
4536: # Save the file
4537: {
4538: if (!open(FH,'>',$filepath.'/'.$file)) {
4539: &logthis('Failed to create '.$filepath.'/'.$file);
4540: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4541: return '/adm/notfound.html';
4542: }
4543: if ($context eq 'overwrite') {
4544: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4545: my $target = $filepath.'/'.$file;
4546: if (-e $source) {
4547: my @info = stat($source);
4548: if ($info[9] eq $env{'form.timestamp'}) {
4549: unless (&File::Copy::move($source,$target)) {
4550: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4551: return "Moving from $source failed";
4552: }
4553: } else {
4554: return "Temporary file: $source had unexpected date/time for last modification";
4555: }
4556: } else {
4557: return "Temporary file: $source missing";
4558: }
4559: } elsif (!print FH ($env{'form.'.$formname})) {
4560: &logthis('Failed to write to '.$filepath.'/'.$file);
4561: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4562: return '/adm/notfound.html';
4563: }
4564: close(FH);
4565: if ($resizewidth && $resizeheight) {
4566: my $mm = new File::MMagic;
4567: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4568: if ($mime_type =~ m{^image/}) {
4569: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4570: }
4571: }
4572: }
4573: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4574: if (ref($mimetype)) {
4575: if ($$mimetype eq '') {
4576: my $mm = new File::MMagic;
4577: my $type = $mm->checktype_filename($filepath.'/'.$file);
4578: $$mimetype = $type;
4579: }
4580: }
4581: }
4582: if (($context ne 'scantron') && ($parser eq 'parse')) {
4583: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4584: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4585: $allfiles,$codebase);
4586: unless ($parse_result eq 'ok') {
4587: &logthis('Failed to parse '.$filepath.$file.
4588: ' for embedded media: '.$parse_result);
4589: }
4590: }
4591: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4592: my $format = $env{'form.scantron_format'};
4593: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4594: }
4595: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4596: my $input = $filepath.'/'.$file;
4597: my $output = $filepath.'/'.'tn-'.$file;
4598: my $makethumb;
4599: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4600: if ($context eq 'toollogo') {
4601: my ($fullwidth,$fullheight) = &check_dimensions($input);
4602: if ($fullwidth ne '' && $fullheight ne '') {
4603: if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
4604: $makethumb = 1;
4605: }
4606: }
4607: } else {
4608: $makethumb = 1;
4609: }
4610: if ($makethumb) {
4611: my @args = ('convert','-sample',$thumbsize,$input,$output);
4612: system({$args[0]} @args);
4613: if (-e $filepath.'/'.'tn-'.$file) {
4614: $fetchthumb = 1;
4615: }
4616: }
4617: }
4618:
4619: # Notify homeserver to grep it
4620: #
4621: my $docuhome=&homeserver($docuname,$docudom);
4622: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4623: if ($fetchresult eq 'ok') {
4624: if ($fetchthumb) {
4625: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4626: if ($thumbresult ne 'ok') {
4627: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4628: $docuhome.': '.$thumbresult);
4629: }
4630: }
4631: #
4632: # Return the URL to it
4633: return '/uploaded/'.$path.$file;
4634: } else {
4635: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4636: ': '.$fetchresult);
4637: return '/adm/notfound.html';
4638: }
4639: }
4640:
4641: sub extract_embedded_items {
4642: my ($fullpath,$allfiles,$codebase,$content) = @_;
4643: my @state = ();
4644: my (%lastids,%related,%shockwave,%flashvars);
4645: my %javafiles = (
4646: codebase => '',
4647: code => '',
4648: archive => ''
4649: );
4650: my %mediafiles = (
4651: src => '',
4652: movie => '',
4653: );
4654: my $p;
4655: if ($content) {
4656: $p = HTML::LCParser->new($content);
4657: } else {
4658: $p = HTML::LCParser->new($fullpath);
4659: }
4660: while (my $t=$p->get_token()) {
4661: if ($t->[0] eq 'S') {
4662: my ($tagname, $attr) = ($t->[1],$t->[2]);
4663: push(@state, $tagname);
4664: if (lc($tagname) eq 'allow') {
4665: &add_filetype($allfiles,$attr->{'src'},'src');
4666: }
4667: if (lc($tagname) eq 'img') {
4668: &add_filetype($allfiles,$attr->{'src'},'src');
4669: }
4670: if (lc($tagname) eq 'a') {
4671: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4672: &add_filetype($allfiles,$attr->{'href'},'href');
4673: }
4674: }
4675: if (lc($tagname) eq 'script') {
4676: my $src;
4677: if ($attr->{'archive'} =~ /\.jar$/i) {
4678: &add_filetype($allfiles,$attr->{'archive'},'archive');
4679: } else {
4680: if ($attr->{'src'} ne '') {
4681: $src = $attr->{'src'};
4682: &add_filetype($allfiles,$src,'src');
4683: }
4684: }
4685: my $text = $p->get_trimmed_text();
4686: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4687: my @swfargs = split(/,/,$1);
4688: foreach my $item (@swfargs) {
4689: $item =~ s/["']//g;
4690: $item =~ s/^\s+//;
4691: $item =~ s/\s+$//;
4692: }
4693: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4694: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4695: push(@{$related{$swfargs[0]}},$swfargs[2]);
4696: } else {
4697: $related{$swfargs[0]} = [$swfargs[2]];
4698: }
4699: }
4700: }
4701: }
4702: if (lc($tagname) eq 'link') {
4703: if (lc($attr->{'rel'}) eq 'stylesheet') {
4704: &add_filetype($allfiles,$attr->{'href'},'href');
4705: }
4706: }
4707: if (lc($tagname) eq 'object' ||
4708: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4709: foreach my $item (keys(%javafiles)) {
4710: $javafiles{$item} = '';
4711: }
4712: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4713: $lastids{lc($tagname)} = $attr->{'id'};
4714: }
4715: }
4716: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4717: my $name = lc($attr->{'name'});
4718: foreach my $item (keys(%javafiles)) {
4719: if ($name eq $item) {
4720: $javafiles{$item} = $attr->{'value'};
4721: last;
4722: }
4723: }
4724: my $pathfrom;
4725: foreach my $item (keys(%mediafiles)) {
4726: if ($name eq $item) {
4727: $pathfrom = $attr->{'value'};
4728: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4729: &add_filetype($allfiles,$pathfrom,$name);
4730: last;
4731: }
4732: }
4733: if ($name eq 'flashvars') {
4734: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4735: }
4736: if ($pathfrom ne '') {
4737: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4738: $pathfrom);
4739: }
4740: }
4741: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4742: foreach my $item (keys(%javafiles)) {
4743: if ($attr->{$item}) {
4744: $javafiles{$item} = $attr->{$item};
4745: last;
4746: }
4747: }
4748: foreach my $item (keys(%mediafiles)) {
4749: if ($attr->{$item}) {
4750: &add_filetype($allfiles,$attr->{$item},$item);
4751: last;
4752: }
4753: }
4754: if (lc($tagname) eq 'embed') {
4755: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4756: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4757: $attr->{'src'});
4758: }
4759: }
4760: }
4761: if (lc($tagname) eq 'iframe') {
4762: my $src = $attr->{'src'} ;
4763: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4764: &add_filetype($allfiles,$src,'src');
4765: } elsif ($src =~ m{^/}) {
4766: if ($env{'request.course.id'}) {
4767: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4768: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4769: my $url = &hreflocation('',$fullpath);
4770: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4771: my $relpath = $1;
4772: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4773: &add_filetype($allfiles,$1,'src');
4774: }
4775: }
4776: }
4777: }
4778: }
4779: if ($t->[4] =~ m{/>$}) {
4780: pop(@state);
4781: }
4782: } elsif ($t->[0] eq 'E') {
4783: my ($tagname) = ($t->[1]);
4784: if ($javafiles{'codebase'} ne '') {
4785: $javafiles{'codebase'} .= '/';
4786: }
4787: if (lc($tagname) eq 'applet' ||
4788: lc($tagname) eq 'object' ||
4789: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4790: ) {
4791: foreach my $item (keys(%javafiles)) {
4792: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4793: my $file=$javafiles{'codebase'}.$javafiles{$item};
4794: &add_filetype($allfiles,$file,$item);
4795: }
4796: }
4797: }
4798: pop @state;
4799: }
4800: }
4801: foreach my $id (sort(keys(%flashvars))) {
4802: if ($shockwave{$id} ne '') {
4803: my @pairs = split(/\&/,$flashvars{$id});
4804: foreach my $pair (@pairs) {
4805: my ($key,$value) = split(/\=/,$pair);
4806: if ($key eq 'thumb') {
4807: &add_filetype($allfiles,$value,$key);
4808: } elsif ($key eq 'content') {
4809: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4810: my ($ext) = ($value =~ /\.([^.]+)$/);
4811: if ($ext ne '') {
4812: &add_filetype($allfiles,$path.$value,$ext);
4813: }
4814: }
4815: }
4816: }
4817: }
4818: return 'ok';
4819: }
4820:
4821: sub add_filetype {
4822: my ($allfiles,$file,$type)=@_;
4823: if (exists($allfiles->{$file})) {
4824: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4825: push(@{$allfiles->{$file}}, &escape($type));
4826: }
4827: } else {
4828: @{$allfiles->{$file}} = (&escape($type));
4829: }
4830: }
4831:
4832: sub embedded_dependency {
4833: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4834: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4835: if (($identifier ne '') &&
4836: (ref($related->{$identifier}) eq 'ARRAY') &&
4837: ($pathfrom ne '')) {
4838: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4839: foreach my $dep (@{$related->{$identifier}}) {
4840: &add_filetype($allfiles,$path.$dep,'object');
4841: }
4842: }
4843: }
4844: return;
4845: }
4846:
4847: sub check_dimensions {
4848: my ($inputfile) = @_;
4849: my ($fullwidth,$fullheight);
4850: if (($inputfile =~ m|^[/\w.\-]+$|) && (-e $inputfile)) {
4851: my $mm = new File::MMagic;
4852: my $mime_type = $mm->checktype_filename($inputfile);
4853: if ($mime_type =~ m{^image/}) {
4854: if (open(PIPE,"identify $inputfile 2>&1 |")) {
4855: my $imageinfo = <PIPE>;
4856: if (!close(PIPE)) {
4857: &Apache::lonnet::logthis("Failed to close PIPE opened to retrieve image information for $inputfile");
4858: }
4859: chomp($imageinfo);
4860: my ($fullsize) =
4861: ($imageinfo =~ /^\Q$inputfile\E\s+\w+\s+(\d+x\d+)/);
4862: if ($fullsize) {
4863: ($fullwidth,$fullheight) = split(/x/,$fullsize);
4864: }
4865: }
4866: }
4867: }
4868: return ($fullwidth,$fullheight);
4869: }
4870:
4871: sub bubblesheet_converter {
4872: my ($cdom,$fullpath,$config,$format) = @_;
4873: if ((&domain($cdom) ne '') &&
4874: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4875: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4876: my (%csvcols,%csvoptions);
4877: if (ref($config->{'fields'}) eq 'HASH') {
4878: %csvcols = %{$config->{'fields'}};
4879: }
4880: if (ref($config->{'options'}) eq 'HASH') {
4881: %csvoptions = %{$config->{'options'}};
4882: }
4883: my %csvbynum = reverse(%csvcols);
4884: my %scantronconf = &get_scantron_config($format,$cdom);
4885: if (keys(%scantronconf)) {
4886: my %bynum = (
4887: $scantronconf{CODEstart} => 'CODEstart',
4888: $scantronconf{IDstart} => 'IDstart',
4889: $scantronconf{PaperID} => 'PaperID',
4890: $scantronconf{FirstName} => 'FirstName',
4891: $scantronconf{LastName} => 'LastName',
4892: $scantronconf{Qstart} => 'Qstart',
4893: );
4894: my @ordered;
4895: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4896: push(@ordered,$bynum{$item});
4897: }
4898: my %mapstart = (
4899: CODEstart => 'CODE',
4900: IDstart => 'ID',
4901: PaperID => 'PaperID',
4902: FirstName => 'FirstName',
4903: LastName => 'LastName',
4904: Qstart => 'FirstQuestion',
4905: );
4906: my %maplength = (
4907: CODEstart => 'CODElength',
4908: IDstart => 'IDlength',
4909: PaperID => 'PaperIDlength',
4910: FirstName => 'FirstNamelength',
4911: LastName => 'LastNamelength',
4912: );
4913: if (open(my $fh,'<',$fullpath)) {
4914: my $output;
4915: my %lettdig = &letter_to_digits();
4916: my %diglett = reverse(%lettdig);
4917: my $numletts = scalar(keys(%lettdig));
4918: my $num = 0;
4919: while (my $line=<$fh>) {
4920: $num ++;
4921: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4922: $line =~ s{[\r\n]+$}{};
4923: my %found;
4924: my @values = split(/,/,$line,-1);
4925: my ($qstart,$record);
4926: for (my $i=0; $i<@values; $i++) {
4927: if ((($qstart ne '') && ($i > $qstart)) ||
4928: ($csvbynum{$i} eq 'FirstQuestion')) {
4929: if ($values[$i] eq '') {
4930: $values[$i] = $scantronconf{'Qoff'};
4931: } elsif ($scantronconf{'Qon'} eq 'number') {
4932: if ($values[$i] =~ /^[A-Ja-j]$/) {
4933: $values[$i] = $lettdig{uc($values[$i])};
4934: }
4935: } elsif ($scantronconf{'Qon'} eq 'letter') {
4936: if ($values[$i] =~ /^[0-9]$/) {
4937: $values[$i] = $diglett{$values[$i]};
4938: }
4939: } else {
4940: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4941: my $digit;
4942: if ($values[$i] =~ /^[A-Ja-j]$/) {
4943: $digit = $lettdig{uc($values[$i])}-1;
4944: if ($values[$i] eq 'J') {
4945: $digit += $numletts;
4946: }
4947: } elsif ($values[$i] =~ /^[0-9]$/) {
4948: $digit = $values[$i]-1;
4949: if ($values[$i] eq '0') {
4950: $digit += $numletts;
4951: }
4952: }
4953: my $qval='';
4954: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4955: if ($j == $digit) {
4956: $qval .= $scantronconf{'Qon'};
4957: } else {
4958: $qval .= $scantronconf{'Qoff'};
4959: }
4960: }
4961: $values[$i] = $qval;
4962: }
4963: }
4964: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4965: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4966: }
4967: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4968: if ($numblank > 0) {
4969: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4970: }
4971: if ($csvbynum{$i} eq 'FirstQuestion') {
4972: $qstart = $i;
4973: $found{$csvbynum{$i}} = $values[$i];
4974: } else {
4975: $found{'FirstQuestion'} .= $values[$i];
4976: }
4977: } elsif (exists($csvbynum{$i})) {
4978: if ($csvoptions{'rem'}) {
4979: $values[$i] =~ s/^\s+//;
4980: }
4981: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4982: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4983: $values[$i] = '0'.$values[$i];
4984: }
4985: }
4986: $found{$csvbynum{$i}} = $values[$i];
4987: }
4988: }
4989: foreach my $item (@ordered) {
4990: my $currlength = 1+length($record);
4991: my $numspaces = $scantronconf{$item} - $currlength;
4992: if ($numspaces > 0) {
4993: $record .= (' ' x $numspaces);
4994: }
4995: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4996: unless ($item eq 'Qstart') {
4997: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4998: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4999: }
5000: }
5001: $record .= $found{$mapstart{$item}};
5002: }
5003: }
5004: $output .= "$record\n";
5005: }
5006: close($fh);
5007: if ($output) {
5008: if (open(my $fh,'>',$fullpath)) {
5009: print $fh $output;
5010: close($fh);
5011: }
5012: }
5013: }
5014: }
5015: return;
5016: }
5017: }
5018:
5019: sub letter_to_digits {
5020: my %lettdig = (
5021: A => 1,
5022: B => 2,
5023: C => 3,
5024: D => 4,
5025: E => 5,
5026: F => 6,
5027: G => 7,
5028: H => 8,
5029: I => 9,
5030: J => 0,
5031: );
5032: return %lettdig;
5033: }
5034:
5035: sub get_scantron_config {
5036: my ($which,$cdom) = @_;
5037: my @lines = &get_scantronformat_file($cdom);
5038: my %config;
5039: #FIXME probably should move to XML it has already gotten a bit much now
5040: foreach my $line (@lines) {
5041: my ($name,$descrip)=split(/:/,$line);
5042: if ($name ne $which ) { next; }
5043: chomp($line);
5044: my @config=split(/:/,$line);
5045: $config{'name'}=$config[0];
5046: $config{'description'}=$config[1];
5047: $config{'CODElocation'}=$config[2];
5048: $config{'CODEstart'}=$config[3];
5049: $config{'CODElength'}=$config[4];
5050: $config{'IDstart'}=$config[5];
5051: $config{'IDlength'}=$config[6];
5052: $config{'Qstart'}=$config[7];
5053: $config{'Qlength'}=$config[8];
5054: $config{'Qoff'}=$config[9];
5055: $config{'Qon'}=$config[10];
5056: $config{'PaperID'}=$config[11];
5057: $config{'PaperIDlength'}=$config[12];
5058: $config{'FirstName'}=$config[13];
5059: $config{'FirstNamelength'}=$config[14];
5060: $config{'LastName'}=$config[15];
5061: $config{'LastNamelength'}=$config[16];
5062: $config{'BubblesPerRow'}=$config[17];
5063: last;
5064: }
5065: return %config;
5066: }
5067:
5068: sub get_scantronformat_file {
5069: my ($cdom) = @_;
5070: if ($cdom eq '') {
5071: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
5072: }
5073: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
5074: my $gottab = 0;
5075: my @lines;
5076: if (ref($domconfig{'scantron'}) eq 'HASH') {
5077: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
5078: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
5079: if ($formatfile ne '-1') {
5080: @lines = split("\n",$formatfile,-1);
5081: $gottab = 1;
5082: }
5083: }
5084: }
5085: if (!$gottab) {
5086: my $confname = $cdom.'-domainconfig';
5087: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
5088: my $formatfile = &getfile($default);
5089: if ($formatfile ne '-1') {
5090: @lines = split("\n",$formatfile,-1);
5091: $gottab = 1;
5092: }
5093: }
5094: if (!$gottab) {
5095: my @domains = ¤t_machine_domains();
5096: if (grep(/^\Q$cdom\E$/,@domains)) {
5097: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
5098: @lines = <$fh>;
5099: close($fh);
5100: }
5101: } else {
5102: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
5103: @lines = <$fh>;
5104: close($fh);
5105: }
5106: }
5107: chomp(@lines);
5108: }
5109: return @lines;
5110: }
5111:
5112: sub removeuploadedurl {
5113: my ($url)=@_;
5114: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
5115: return &removeuserfile($uname,$udom,$fname);
5116: }
5117:
5118: sub removeuserfile {
5119: my ($docuname,$docudom,$fname)=@_;
5120: my $home=&homeserver($docuname,$docudom);
5121: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
5122: if ($result eq 'ok') {
5123: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
5124: my $metafile = $fname.'.meta';
5125: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
5126: my $url = "/uploaded/$docudom/$docuname/$fname";
5127: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5128: my $sqlresult =
5129: &update_portfolio_table($docuname,$docudom,$file,
5130: 'portfolio_metadata',$group,
5131: 'delete');
5132: }
5133: }
5134: return $result;
5135: }
5136:
5137: sub mkdiruserfile {
5138: my ($docuname,$docudom,$dir)=@_;
5139: my $home=&homeserver($docuname,$docudom);
5140: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
5141: }
5142:
5143: sub renameuserfile {
5144: my ($docuname,$docudom,$old,$new)=@_;
5145: my $home=&homeserver($docuname,$docudom);
5146: my $result = &reply("renameuserfile:$docudom:$docuname:".
5147: &escape("$old").':'.&escape("$new"),$home);
5148: if ($result eq 'ok') {
5149: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
5150: my $oldmeta = $old.'.meta';
5151: my $newmeta = $new.'.meta';
5152: my $metaresult =
5153: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
5154: my $url = "/uploaded/$docudom/$docuname/$old";
5155: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5156: my $sqlresult =
5157: &update_portfolio_table($docuname,$docudom,$file,
5158: 'portfolio_metadata',$group,
5159: 'delete');
5160: }
5161: }
5162: return $result;
5163: }
5164:
5165: # ------------------------------------------------------------------------- Log
5166:
5167: sub log {
5168: my ($dom,$nam,$hom,$what)=@_;
5169: return critical("log:$dom:$nam:$what",$hom);
5170: }
5171:
5172: # ------------------------------------------------------------------ Course Log
5173: #
5174: # This routine flushes several buffers of non-mission-critical nature
5175: #
5176:
5177: sub flushcourselogs {
5178: &logthis('Flushing log buffers');
5179: #
5180: # course logs
5181: # This is a log of all transactions in a course, which can be used
5182: # for data mining purposes
5183: #
5184: # It also collects the courseid database, which lists last transaction
5185: # times and course titles for all courseids
5186: #
5187: my %courseidbuffer=();
5188: foreach my $crsid (keys(%courselogs)) {
5189: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
5190: &escape($courselogs{$crsid}),
5191: $coursehombuf{$crsid}) eq 'ok') {
5192: delete $courselogs{$crsid};
5193: } else {
5194: &logthis('Failed to flush log buffer for '.$crsid);
5195: if (length($courselogs{$crsid})>40000) {
5196: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
5197: " exceeded maximum size, deleting.</font>");
5198: delete $courselogs{$crsid};
5199: }
5200: }
5201: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
5202: 'description' => $coursedescrbuf{$crsid},
5203: 'inst_code' => $courseinstcodebuf{$crsid},
5204: 'type' => $coursetypebuf{$crsid},
5205: 'owner' => $courseownerbuf{$crsid},
5206: };
5207: }
5208: #
5209: # Write course id database (reverse lookup) to homeserver of courses
5210: # Is used in pickcourse
5211: #
5212: foreach my $crs_home (keys(%courseidbuffer)) {
5213: my $response = &courseidput(&host_domain($crs_home),
5214: $courseidbuffer{$crs_home},
5215: $crs_home,'timeonly');
5216: }
5217: #
5218: # File accesses
5219: # Writes to the dynamic metadata of resources to get hit counts, etc.
5220: #
5221: foreach my $entry (keys(%accesshash)) {
5222: if ($entry =~ /___count$/) {
5223: my ($dom,$name);
5224: ($dom,$name,undef)=
5225: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
5226: if (! defined($dom) || $dom eq '' ||
5227: ! defined($name) || $name eq '') {
5228: my $cid = $env{'request.course.id'};
5229: #
5230: # FIXME 11/29/2021
5231: # Typo in rev. 1.458 (2003/12/09)??
5232: # These should likely by $env{'course.'.$cid.'.domain'} and $env{'course.'.$cid.'.num'}
5233: #
5234: # While these remain as $env{'request.'.$cid.'.domain'} and $env{'request.'.$cid.'.num'}
5235: # $dom and $name will always be null, so the &inc() call will default to storing this data
5236: # in a nohist_accesscount.db file for the user rather than the course.
5237: #
5238: # That said there is a lot of noise in the data being stored.
5239: # So counts for prtspool/ and adm/ etc. are recorded.
5240: #
5241: # A review of which items ending '___count' are written to %accesshash should likely be
5242: # made before deciding whether to set these to 'course.' instead of 'request.'
5243: #
5244: # Under the current scheme each user receives a nohist_accesscount.db file listing
5245: # accesses for things which are not published resources, regardless of course, and
5246: # there is not a nohist_accesscount.db file in a course, which might log accesses from
5247: # anyone in the course for things which are not published resources.
5248: #
5249: # For an author, nohist_accesscount.db ends up having records for other items
5250: # mixed up with the legitimate access counts for the author's published resources.
5251: #
5252: $dom = $env{'request.'.$cid.'.domain'};
5253: $name = $env{'request.'.$cid.'.num'};
5254: }
5255: my $value = $accesshash{$entry};
5256: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
5257: my %temphash=($url => $value);
5258: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
5259: if ($result eq 'ok') {
5260: delete $accesshash{$entry};
5261: }
5262: } else {
5263: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
5264: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
5265: my %temphash=($entry => $accesshash{$entry});
5266: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
5267: delete $accesshash{$entry};
5268: }
5269: }
5270: }
5271: #
5272: # Roles
5273: # Reverse lookup of user roles for course faculty/staff and co-authorship
5274: #
5275: foreach my $entry (keys(%userrolehash)) {
5276: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
5277: split(/\:/,$entry);
5278: if (&put('nohist_userroles',
5279: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
5280: $rudom,$runame) eq 'ok') {
5281: delete $userrolehash{$entry};
5282: }
5283: }
5284: #
5285: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
5286: #
5287: my %domrolebuffer = ();
5288: foreach my $entry (keys(%domainrolehash)) {
5289: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
5290: if ($domrolebuffer{$rudom}) {
5291: $domrolebuffer{$rudom}.='&'.&escape($entry).
5292: '='.&escape($domainrolehash{$entry});
5293: } else {
5294: $domrolebuffer{$rudom}.=&escape($entry).
5295: '='.&escape($domainrolehash{$entry});
5296: }
5297: delete $domainrolehash{$entry};
5298: }
5299: foreach my $dom (keys(%domrolebuffer)) {
5300: my %servers;
5301: if (defined(&domain($dom,'primary'))) {
5302: my $primary=&domain($dom,'primary');
5303: my $hostname=&hostname($primary);
5304: $servers{$primary} = $hostname;
5305: } else {
5306: %servers = &get_servers($dom,'library');
5307: }
5308: foreach my $tryserver (keys(%servers)) {
5309: if (&reply('domroleput:'.$dom.':'.
5310: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5311: last;
5312: } else {
5313: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5314: }
5315: }
5316: }
5317: $dumpcount++;
5318: }
5319:
5320: sub courselog {
5321: my $what=shift;
5322: $what=time.':'.$what;
5323: unless ($env{'request.course.id'}) { return ''; }
5324: $coursedombuf{$env{'request.course.id'}}=
5325: $env{'course.'.$env{'request.course.id'}.'.domain'};
5326: $coursenumbuf{$env{'request.course.id'}}=
5327: $env{'course.'.$env{'request.course.id'}.'.num'};
5328: $coursehombuf{$env{'request.course.id'}}=
5329: $env{'course.'.$env{'request.course.id'}.'.home'};
5330: $coursedescrbuf{$env{'request.course.id'}}=
5331: $env{'course.'.$env{'request.course.id'}.'.description'};
5332: $courseinstcodebuf{$env{'request.course.id'}}=
5333: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5334: $courseownerbuf{$env{'request.course.id'}}=
5335: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5336: $coursetypebuf{$env{'request.course.id'}}=
5337: $env{'course.'.$env{'request.course.id'}.'.type'};
5338: if (defined $courselogs{$env{'request.course.id'}}) {
5339: $courselogs{$env{'request.course.id'}}.='&'.$what;
5340: } else {
5341: $courselogs{$env{'request.course.id'}}.=$what;
5342: }
5343: if (length($courselogs{$env{'request.course.id'}})>4048) {
5344: &flushcourselogs();
5345: }
5346: }
5347:
5348: sub courseacclog {
5349: my $fnsymb=shift;
5350: unless ($env{'request.course.id'}) { return ''; }
5351: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5352: if ($fnsymb=~/$LONCAPA::assess_re/) {
5353: $what.=':POST';
5354: # FIXME: Probably ought to escape things....
5355: foreach my $key (keys(%env)) {
5356: if ($key=~/^form\.(.*)/) {
5357: my $formitem = $1;
5358: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5359: $what.=':'.$formitem.'='.$env{$key};
5360: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5361: if ($formitem eq 'proctorpassword') {
5362: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5363: } else {
5364: $what.=':'.$formitem.'='.$env{$key};
5365: }
5366: }
5367: }
5368: }
5369: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5370: # FIXME: We should not be depending on a form parameter that someone
5371: # editing lonsearchcat.pm might change in the future.
5372: if ($env{'form.phase'} eq 'course_search') {
5373: $what.= ':POST';
5374: # FIXME: Probably ought to escape things....
5375: foreach my $element ('courseexp','crsfulltext','crsrelated',
5376: 'crsdiscuss') {
5377: $what.=':'.$element.'='.$env{'form.'.$element};
5378: }
5379: }
5380: }
5381: &courselog($what);
5382: }
5383:
5384: sub countacc {
5385: my $url=&declutter(shift);
5386: return if (! defined($url) || $url eq '');
5387: unless ($env{'request.course.id'}) { return ''; }
5388: #
5389: # Mark that this url was used in this course
5390: #
5391: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5392: #
5393: # Increase the access count for this resource in this child process
5394: #
5395: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5396: $accesshash{$key}++;
5397: }
5398:
5399: sub linklog {
5400: my ($from,$to)=@_;
5401: $from=&declutter($from);
5402: $to=&declutter($to);
5403: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5404: $accesshash{$to.'___'.$from.'___goto'}=1;
5405: }
5406:
5407: sub statslog {
5408: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5409: if ($users<2) { return; }
5410: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5411: 'course' => $env{'request.course.id'},
5412: 'sections' => '"all"',
5413: 'num_students' => $users,
5414: 'part' => $part,
5415: 'symb' => $symb,
5416: 'mean_tries' => $av_attempts,
5417: 'deg_of_diff' => $degdiff});
5418: foreach my $key (keys(%dynstore)) {
5419: $accesshash{$key}=$dynstore{$key};
5420: }
5421: }
5422:
5423: sub userrolelog {
5424: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5425: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5426: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5427: $userrolehash
5428: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5429: =$tend.':'.$tstart;
5430: }
5431: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5432: $userrolehash
5433: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5434: =$tend.':'.$tstart;
5435: }
5436: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5437: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5438: $domainrolehash
5439: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5440: = $tend.':'.$tstart;
5441: }
5442: }
5443:
5444: sub courserolelog {
5445: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,
5446: $context,$othdomby,$requester)=@_;
5447: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5448: my $cdom = $1;
5449: my $cnum = $2;
5450: my $sec = $3;
5451: my $namespace = 'rolelog';
5452: my %storehash = (
5453: role => $trole,
5454: start => $tstart,
5455: end => $tend,
5456: selfenroll => $selfenroll,
5457: context => $context,
5458: );
5459: if ($othdomby) {
5460: if ($othdomby eq 'othdombydc') {
5461: $storehash{'approval'} = 'domain';
5462: } elsif ($othdomby eq 'othdombyuser') {
5463: $storehash{'approval'} = 'user';
5464: }
5465: if ($requester ne '') {
5466: $storehash{'requester'} = $requester;
5467: }
5468: }
5469: if ($trole eq 'gr') {
5470: $namespace = 'groupslog';
5471: $storehash{'group'} = $sec;
5472: } else {
5473: $storehash{'section'} = $sec;
5474: my ($curruserdomstr,$newuserdomstr);
5475: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'})) {
5476: $curruserdomstr = $env{'course.'.$env{'request.course.id'}.'.internal.userdomains'};
5477: } else {
5478: my %courseinfo = &coursedescription($cdom.'/'.$cnum);
5479: $curruserdomstr = $courseinfo{'internal.userdomains'};
5480: }
5481: if ($curruserdomstr ne '') {
5482: my @udoms = split(/,/,$curruserdomstr);
5483: unless (grep(/^\Q$domain\E/,@udoms)) {
5484: push(@udoms,$domain);
5485: $newuserdomstr = join(',',sort(@udoms));
5486: }
5487: } else {
5488: $newuserdomstr = $domain;
5489: }
5490: if ($newuserdomstr ne '') {
5491: my $putresult = &put('environment',{ 'internal.userdomains' => $newuserdomstr },
5492: $cdom,$cnum);
5493: if ($putresult eq 'ok') {
5494: unless (($selfenroll) || ($context eq 'selfenroll')) {
5495: if (($context eq 'createcourse') || ($context eq 'requestcourses') ||
5496: ($context eq 'automated') || ($context eq 'domain')) {
5497: $env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'} = $newuserdomstr;
5498: } elsif ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
5499: &appenv({'course.'.$cdom.'_'.$cnum.'.internal.userdomains' => $newuserdomstr});
5500: }
5501: }
5502: }
5503: }
5504: }
5505: &write_log('course',$namespace,\%storehash,$delflag,$username,
5506: $domain,$cnum,$cdom);
5507: if (($trole ne 'st') || ($sec ne '')) {
5508: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5509: }
5510: }
5511: return;
5512: }
5513:
5514: sub domainrolelog {
5515: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
5516: $context,$othdomby,$requester)=@_;
5517: if ($area =~ m{^/($match_domain)/$}) {
5518: my $cdom = $1;
5519: my $domconfiguser = &get_domainconfiguser($cdom);
5520: my $namespace = 'rolelog';
5521: my %storehash = (
5522: role => $trole,
5523: start => $tstart,
5524: end => $tend,
5525: context => $context,
5526: );
5527: if ($othdomby) {
5528: if ($othdomby eq 'othdombydc') {
5529: $storehash{'approval'} = 'domain';
5530: } elsif ($othdomby eq 'othdombyuser') {
5531: $storehash{'approval'} = 'user';
5532: }
5533: if ($requester ne '') {
5534: $storehash{'requester'} = $requester;
5535: }
5536: }
5537: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5538: $domain,$domconfiguser,$cdom);
5539: }
5540: return;
5541:
5542: }
5543:
5544: sub coauthorrolelog {
5545: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
5546: $context,$othdomby,$requester)=@_;
5547: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5548: my $audom = $1;
5549: my $auname = $2;
5550: my $namespace = 'rolelog';
5551: my %storehash = (
5552: role => $trole,
5553: start => $tstart,
5554: end => $tend,
5555: context => $context,
5556: );
5557: if ($othdomby) {
5558: if ($othdomby eq 'othdombydc') {
5559: $storehash{'approval'} = 'domain';
5560: } elsif ($othdomby eq 'othdombyuser') {
5561: $storehash{'approval'} = 'user';
5562: }
5563: if ($requester ne '') {
5564: $storehash{'requester'} = $requester;
5565: }
5566: }
5567: &write_log('author',$namespace,\%storehash,$delflag,$username,
5568: $domain,$auname,$audom);
5569: }
5570: return;
5571: }
5572:
5573: sub get_course_adv_roles {
5574: my ($cid,$codes) = @_;
5575: $cid=$env{'request.course.id'} unless (defined($cid));
5576: my %coursehash=&coursedescription($cid);
5577: my $crstype = &Apache::loncommon::course_type($cid);
5578: my %nothide=();
5579: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5580: if ($user !~ /:/) {
5581: $nothide{join(':',split(/[\@]/,$user))}=1;
5582: } else {
5583: $nothide{$user}=1;
5584: }
5585: }
5586: my @possdoms = ($coursehash{'domain'});
5587: if ($coursehash{'checkforpriv'}) {
5588: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5589: }
5590: my %returnhash=();
5591: my %dumphash=
5592: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5593: my $now=time;
5594: my %privileged;
5595: foreach my $entry (keys(%dumphash)) {
5596: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5597: if (($tstart) && ($tstart<0)) { next; }
5598: if (($tend) && ($tend<$now)) { next; }
5599: if (($tstart) && ($now<$tstart)) { next; }
5600: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5601: if ($username eq '' || $domain eq '') { next; }
5602: if ((&privileged($username,$domain,\@possdoms)) &&
5603: (!$nothide{$username.':'.$domain})) { next; }
5604: if ($role eq 'cr') { next; }
5605: if ($codes) {
5606: if ($section) { $role .= ':'.$section; }
5607: if ($returnhash{$role}) {
5608: $returnhash{$role}.=','.$username.':'.$domain;
5609: } else {
5610: $returnhash{$role}=$username.':'.$domain;
5611: }
5612: } else {
5613: my $key=&plaintext($role,$crstype);
5614: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5615: if ($returnhash{$key}) {
5616: $returnhash{$key}.=','.$username.':'.$domain;
5617: } else {
5618: $returnhash{$key}=$username.':'.$domain;
5619: }
5620: }
5621: }
5622: return %returnhash;
5623: }
5624:
5625: sub get_my_roles {
5626: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5627: unless (defined($uname)) { $uname=$env{'user.name'}; }
5628: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5629: my (%dumphash,%nothide);
5630: if ($context eq 'userroles') {
5631: %dumphash = &dump('roles',$udom,$uname);
5632: } else {
5633: %dumphash = &dump('nohist_userroles',$udom,$uname);
5634: if ($hidepriv) {
5635: my %coursehash=&coursedescription($udom.'_'.$uname);
5636: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5637: if ($user !~ /:/) {
5638: $nothide{join(':',split(/[\@]/,$user))} = 1;
5639: } else {
5640: $nothide{$user} = 1;
5641: }
5642: }
5643: }
5644: }
5645: my %returnhash=();
5646: my $now=time;
5647: my %privileged;
5648: foreach my $entry (keys(%dumphash)) {
5649: my ($role,$tend,$tstart);
5650: if ($context eq 'userroles') {
5651: next if ($entry =~ /^rolesdef/);
5652: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5653: } else {
5654: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5655: }
5656: if (($tstart) && ($tstart<0)) { next; }
5657: my $status = 'active';
5658: if (($tend) && ($tend<=$now)) {
5659: $status = 'previous';
5660: }
5661: if (($tstart) && ($now<$tstart)) {
5662: $status = 'future';
5663: }
5664: if (ref($types) eq 'ARRAY') {
5665: if (!grep(/^\Q$status\E$/,@{$types})) {
5666: next;
5667: }
5668: } else {
5669: if ($status ne 'active') {
5670: next;
5671: }
5672: }
5673: my ($rolecode,$username,$domain,$section,$area);
5674: if ($context eq 'userroles') {
5675: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5676: (undef,$domain,$username,$section) = split(/\//,$area);
5677: } else {
5678: ($role,$username,$domain,$section) = split(/\:/,$entry);
5679: }
5680: if (ref($roledoms) eq 'ARRAY') {
5681: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5682: next;
5683: }
5684: }
5685: if (ref($roles) eq 'ARRAY') {
5686: if (!grep(/^\Q$role\E$/,@{$roles})) {
5687: if ($role =~ /^cr\//) {
5688: if (!grep(/^cr$/,@{$roles})) {
5689: next;
5690: }
5691: } elsif ($role =~ /^gr\//) {
5692: if (!grep(/^gr$/,@{$roles})) {
5693: next;
5694: }
5695: } else {
5696: next;
5697: }
5698: }
5699: }
5700: if ($hidepriv) {
5701: my @privroles = ('dc','su');
5702: if ($context eq 'userroles') {
5703: next if (grep(/^\Q$role\E$/,@privroles));
5704: } else {
5705: my $possdoms = [$domain];
5706: if (ref($roledoms) eq 'ARRAY') {
5707: push(@{$possdoms},@{$roledoms});
5708: }
5709: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5710: if (!$nothide{$username.':'.$domain}) {
5711: next;
5712: }
5713: }
5714: }
5715: }
5716: if ($withsec) {
5717: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5718: $tstart.':'.$tend;
5719: } else {
5720: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5721: }
5722: }
5723: return %returnhash;
5724: }
5725:
5726: sub get_all_adhocroles {
5727: my ($dom) = @_;
5728: my @roles_by_num = ();
5729: my %domdefaults = &get_domain_defaults($dom);
5730: my (%description,%access_in_dom,%access_info);
5731: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5732: my $count = 0;
5733: my %domcurrent = %{$domdefaults{'adhocroles'}};
5734: my %ordered;
5735: foreach my $role (sort(keys(%domcurrent))) {
5736: my ($order,$desc,$access_in_dom);
5737: if (ref($domcurrent{$role}) eq 'HASH') {
5738: $order = $domcurrent{$role}{'order'};
5739: $desc = $domcurrent{$role}{'desc'};
5740: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5741: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5742: }
5743: if ($order eq '') {
5744: $order = $count;
5745: }
5746: $ordered{$order} = $role;
5747: if ($desc ne '') {
5748: $description{$role} = $desc;
5749: } else {
5750: $description{$role}= $role;
5751: }
5752: $count++;
5753: }
5754: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5755: push(@roles_by_num,$ordered{$item});
5756: }
5757: }
5758: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5759: }
5760:
5761: sub get_my_adhocroles {
5762: my ($cid,$checkreg) = @_;
5763: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5764: if ($env{'request.course.id'} eq $cid) {
5765: $cdom = $env{'course.'.$cid.'.domain'};
5766: $cnum = $env{'course.'.$cid.'.num'};
5767: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5768: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5769: $cdom = $1;
5770: $cnum = $2;
5771: %info = &get('environment',['internal.coursecode'],
5772: $cdom,$cnum);
5773: }
5774: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5775: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5776: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5777: if ($rosterhash{$user} ne '') {
5778: my $type = (split(/:/,$rosterhash{$user}))[5];
5779: return ([],{}) if ($type eq 'auto');
5780: }
5781: }
5782: if (($cdom ne '') && ($cnum ne '')) {
5783: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5784: my $then=$env{'user.login.time'};
5785: my $update=$env{'user.update.time'};
5786: if (!$update) {
5787: $update = $then;
5788: }
5789: my @liveroles;
5790: foreach my $role ('dh','da') {
5791: if ($env{"user.role.$role./$cdom/"}) {
5792: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5793: my $limit = $update;
5794: if ($env{'request.role'} eq "$role./$cdom/") {
5795: $limit = $then;
5796: }
5797: my $activerole = 1;
5798: if ($tstart && $tstart>$limit) { $activerole = 0; }
5799: if ($tend && $tend <$limit) { $activerole = 0; }
5800: if ($activerole) {
5801: push(@liveroles,$role);
5802: }
5803: }
5804: }
5805: if (@liveroles) {
5806: if (&homeserver($cnum,$cdom) ne 'no_host') {
5807: my ($accessref,$accessinfo,%access_in_dom);
5808: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5809: if (ref($roles_by_num) eq 'ARRAY') {
5810: if (@{$roles_by_num}) {
5811: my %settings;
5812: if ($env{'request.course.id'} eq $cid) {
5813: foreach my $envkey (keys(%env)) {
5814: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5815: $settings{$1} = $env{$envkey};
5816: }
5817: }
5818: } else {
5819: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5820: }
5821: my %setincrs;
5822: if ($settings{'internal.adhocaccess'}) {
5823: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5824: }
5825: my @statuses;
5826: if ($env{'environment.inststatus'}) {
5827: @statuses = split(/,/,$env{'environment.inststatus'});
5828: }
5829: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5830: if (ref($accessref) eq 'HASH') {
5831: %access_in_dom = %{$accessref};
5832: }
5833: foreach my $role (@{$roles_by_num}) {
5834: my ($curraccess,@okstatus,@personnel);
5835: if ($setincrs{$role}) {
5836: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5837: if ($curraccess eq 'status') {
5838: @okstatus = split(/\&/,$rest);
5839: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5840: @personnel = split(/\&/,$rest);
5841: }
5842: } else {
5843: $curraccess = $access_in_dom{$role};
5844: if (ref($accessinfo) eq 'HASH') {
5845: if ($curraccess eq 'status') {
5846: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5847: @okstatus = @{$accessinfo->{$role}};
5848: }
5849: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5850: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5851: @personnel = @{$accessinfo->{$role}};
5852: }
5853: }
5854: }
5855: }
5856: if ($curraccess eq 'none') {
5857: next;
5858: } elsif ($curraccess eq 'all') {
5859: push(@possroles,$role);
5860: } elsif ($curraccess eq 'dh') {
5861: if (grep(/^dh$/,@liveroles)) {
5862: push(@possroles,$role);
5863: } else {
5864: next;
5865: }
5866: } elsif ($curraccess eq 'da') {
5867: if (grep(/^da$/,@liveroles)) {
5868: push(@possroles,$role);
5869: } else {
5870: next;
5871: }
5872: } elsif ($curraccess eq 'status') {
5873: if (@okstatus) {
5874: if (!@statuses) {
5875: if (grep(/^default$/,@okstatus)) {
5876: push(@possroles,$role);
5877: }
5878: } else {
5879: foreach my $status (@okstatus) {
5880: if (grep(/^\Q$status\E$/,@statuses)) {
5881: push(@possroles,$role);
5882: last;
5883: }
5884: }
5885: }
5886: }
5887: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5888: if (grep(/^\Q$user\E$/,@personnel)) {
5889: if ($curraccess eq 'exc') {
5890: push(@possroles,$role);
5891: }
5892: } elsif ($curraccess eq 'inc') {
5893: push(@possroles,$role);
5894: }
5895: }
5896: }
5897: }
5898: }
5899: }
5900: }
5901: }
5902: }
5903: unless (ref($description) eq 'HASH') {
5904: if (ref($roles_by_num) eq 'ARRAY') {
5905: my %desc;
5906: map { $desc{$_} = $_; } (@{$roles_by_num});
5907: $description = \%desc;
5908: } else {
5909: $description = {};
5910: }
5911: }
5912: return (\@possroles,$description);
5913: }
5914:
5915: # ----------------------------------------------------- Frontpage Announcements
5916: #
5917: #
5918:
5919: sub postannounce {
5920: my ($server,$text)=@_;
5921: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5922: unless ($text=~/\w/) { $text=''; }
5923: return &reply('setannounce:'.&escape($text),$server);
5924: }
5925:
5926: sub getannounce {
5927:
5928: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5929: my $announcement='';
5930: while (my $line = <$fh>) { $announcement .= $line; }
5931: close($fh);
5932: if ($announcement=~/\w/) {
5933: return
5934: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5935: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5936: } else {
5937: return '';
5938: }
5939: } else {
5940: return '';
5941: }
5942: }
5943:
5944: # ---------------------------------------------------------- Course ID routines
5945: # Deal with domain's nohist_courseid.db files
5946: #
5947:
5948: sub courseidput {
5949: my ($domain,$storehash,$coursehome,$caller) = @_;
5950: return unless (ref($storehash) eq 'HASH');
5951: my $outcome;
5952: if ($caller eq 'timeonly') {
5953: my $cids = '';
5954: foreach my $item (keys(%$storehash)) {
5955: $cids.=&escape($item).'&';
5956: }
5957: $cids=~s/\&$//;
5958: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5959: $coursehome);
5960: } else {
5961: my $items = '';
5962: foreach my $item (keys(%$storehash)) {
5963: $items.= &escape($item).'='.
5964: &freeze_escape($$storehash{$item}).'&';
5965: }
5966: $items=~s/\&$//;
5967: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5968: $coursehome);
5969: }
5970: if ($outcome eq 'unknown_cmd') {
5971: my $what;
5972: foreach my $cid (keys(%$storehash)) {
5973: $what .= &escape($cid).'=';
5974: foreach my $item ('description','inst_code','owner','type') {
5975: $what .= &escape($storehash->{$cid}{$item}).':';
5976: }
5977: $what =~ s/\:$/&/;
5978: }
5979: $what =~ s/\&$//;
5980: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5981: } else {
5982: return $outcome;
5983: }
5984: }
5985:
5986: sub courseiddump {
5987: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5988: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5989: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5990: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5991: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5992: my $as_hash = 1;
5993: my %returnhash;
5994: if (!$domfilter) { $domfilter=''; }
5995: my %libserv = &all_library();
5996: foreach my $tryserver (keys(%libserv)) {
5997: if ( ( $hostidflag == 1
5998: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5999: || (!defined($hostidflag)) ) {
6000:
6001: if (($domfilter eq '') ||
6002: (&host_domain($tryserver) eq $domfilter)) {
6003: my $rep;
6004: if (grep { $_ eq $tryserver } current_machine_ids()) {
6005: $rep = LONCAPA::Lond::dump_course_id_handler(
6006: join(":", (&host_domain($tryserver), $sincefilter,
6007: &escape($descfilter), &escape($instcodefilter),
6008: &escape($ownerfilter), &escape($coursefilter),
6009: &escape($typefilter), &escape($regexp_ok),
6010: $as_hash, &escape($selfenrollonly),
6011: &escape($catfilter), $showhidden, $caller,
6012: &escape($cloner), &escape($cc_clone), $cloneonly,
6013: &escape($createdbefore), &escape($createdafter),
6014: &escape($creationcontext),$domcloner,$hasuniquecode,
6015: $reqcrsdom,&escape($reqinstcode))));
6016: } else {
6017: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
6018: $sincefilter.':'.&escape($descfilter).':'.
6019: &escape($instcodefilter).':'.&escape($ownerfilter).
6020: ':'.&escape($coursefilter).':'.&escape($typefilter).
6021: ':'.&escape($regexp_ok).':'.$as_hash.':'.
6022: &escape($selfenrollonly).':'.&escape($catfilter).':'.
6023: $showhidden.':'.$caller.':'.&escape($cloner).':'.
6024: &escape($cc_clone).':'.$cloneonly.':'.
6025: &escape($createdbefore).':'.&escape($createdafter).':'.
6026: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
6027: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
6028: }
6029:
6030: my @pairs=split(/\&/,$rep);
6031: foreach my $item (@pairs) {
6032: my ($key,$value)=split(/\=/,$item,2);
6033: $key = &unescape($key);
6034: next if ($key =~ /^error: 2 /);
6035: my $result = &thaw_unescape($value);
6036: if (ref($result) eq 'HASH') {
6037: $returnhash{$key}=$result;
6038: } else {
6039: my @responses = split(/:/,$value);
6040: my @items = ('description','inst_code','owner','type');
6041: for (my $i=0; $i<@responses; $i++) {
6042: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
6043: }
6044: }
6045: }
6046: }
6047: }
6048: }
6049: return %returnhash;
6050: }
6051:
6052: sub courselastaccess {
6053: my ($cdom,$cnum,$hostidref) = @_;
6054: my %returnhash;
6055: if ($cdom && $cnum) {
6056: my $chome = &homeserver($cnum,$cdom);
6057: if ($chome ne 'no_host') {
6058: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
6059: &extract_lastaccess(\%returnhash,$rep);
6060: }
6061: } else {
6062: if (!$cdom) { $cdom=''; }
6063: my %libserv = &all_library();
6064: foreach my $tryserver (keys(%libserv)) {
6065: if (ref($hostidref) eq 'ARRAY') {
6066: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
6067: }
6068: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
6069: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
6070: &extract_lastaccess(\%returnhash,$rep);
6071: }
6072: }
6073: }
6074: return %returnhash;
6075: }
6076:
6077: sub extract_lastaccess {
6078: my ($returnhash,$rep) = @_;
6079: if (ref($returnhash) eq 'HASH') {
6080: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
6081: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
6082: $rep eq '') {
6083: my @pairs=split(/\&/,$rep);
6084: foreach my $item (@pairs) {
6085: my ($key,$value)=split(/\=/,$item,2);
6086: $key = &unescape($key);
6087: next if ($key =~ /^error: 2 /);
6088: $returnhash->{$key} = &thaw_unescape($value);
6089: }
6090: }
6091: }
6092: return;
6093: }
6094:
6095: # ---------------------------------------------------------- DC e-mail
6096:
6097: sub dcmailput {
6098: my ($domain,$msgid,$message,$server)=@_;
6099: my $status = &critical(
6100: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
6101: &escape($message),$server);
6102: return $status;
6103: }
6104:
6105: sub dcmaildump {
6106: my ($dom,$startdate,$enddate,$senders) = @_;
6107: my %returnhash=();
6108:
6109: if (defined(&domain($dom,'primary'))) {
6110: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
6111: &escape($enddate).':';
6112: my @esc_senders=map { &escape($_)} @$senders;
6113: $cmd.=&escape(join('&',@esc_senders));
6114: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
6115: my ($key,$value) = split(/\=/,$line,2);
6116: if (($key) && ($value)) {
6117: $returnhash{&unescape($key)} = &unescape($value);
6118: }
6119: }
6120: }
6121: return %returnhash;
6122: }
6123: # ---------------------------------------------------------- Domain roles
6124:
6125: sub get_domain_roles {
6126: my ($dom,$roles,$startdate,$enddate)=@_;
6127: if ((!defined($startdate)) || ($startdate eq '')) {
6128: $startdate = '.';
6129: }
6130: if ((!defined($enddate)) || ($enddate eq '')) {
6131: $enddate = '.';
6132: }
6133: my $rolelist;
6134: if (ref($roles) eq 'ARRAY') {
6135: $rolelist = join('&',@{$roles});
6136: }
6137: my %personnel = ();
6138:
6139: my %servers = &get_servers($dom,'library');
6140: foreach my $tryserver (keys(%servers)) {
6141: %{$personnel{$tryserver}}=();
6142: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
6143: &escape($startdate).':'.
6144: &escape($enddate).':'.
6145: &escape($rolelist), $tryserver))) {
6146: my ($key,$value) = split(/\=/,$line,2);
6147: if (($key) && ($value)) {
6148: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
6149: }
6150: }
6151: }
6152: return %personnel;
6153: }
6154:
6155: sub get_active_domroles {
6156: my ($dom,$roles) = @_;
6157: return () unless (ref($roles) eq 'ARRAY');
6158: my $now = time;
6159: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
6160: my %domroles;
6161: foreach my $server (keys(%dompersonnel)) {
6162: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
6163: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
6164: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
6165: }
6166: }
6167: return %domroles;
6168: }
6169:
6170: # ----------------------------------------------------------- Interval timing
6171:
6172: {
6173: # Caches needed for speedup of navmaps
6174: # We don't want to cache this for very long at all (5 seconds at most)
6175: #
6176: # The user for whom we cache
6177: my $cachedkey='';
6178: # The cached times for this user
6179: my %cachedtimes=();
6180: # When this was last done
6181: my $cachedtime='';
6182:
6183: sub load_all_first_access {
6184: my ($uname,$udom,$ignorecache)=@_;
6185: if (($cachedkey eq $uname.':'.$udom) &&
6186: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
6187: (!$ignorecache)) {
6188: return;
6189: }
6190: $cachedtime=time;
6191: $cachedkey=$uname.':'.$udom;
6192: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
6193: }
6194:
6195: sub get_first_access {
6196: my ($type,$argsymb,$argmap,$ignorecache)=@_;
6197: my ($symb,$courseid,$udom,$uname)=&whichuser();
6198: if ($argsymb) { $symb=$argsymb; }
6199: my ($map,$id,$res)=&decode_symb($symb);
6200: if ($argmap) { $map = $argmap; }
6201: if ($type eq 'course') {
6202: $res='course';
6203: } elsif ($type eq 'map') {
6204: $res=&symbread($map);
6205: } else {
6206: $res=$symb;
6207: }
6208: &load_all_first_access($uname,$udom,$ignorecache);
6209: return $cachedtimes{"$courseid\0$res"};
6210: }
6211:
6212: sub set_first_access {
6213: my ($type,$interval)=@_;
6214: my ($symb,$courseid,$udom,$uname)=&whichuser();
6215: my ($map,$id,$res)=&decode_symb($symb);
6216: if ($type eq 'course') {
6217: $res='course';
6218: } elsif ($type eq 'map') {
6219: $res=&symbread($map);
6220: } else {
6221: $res=$symb;
6222: }
6223: $cachedkey='';
6224: my $firstaccess=&get_first_access($type,$symb,$map);
6225: if ($firstaccess) {
6226: &logthis("First access time already set ($firstaccess) when attempting ".
6227: "to set new value (type: $type, extent: $res) for $uname:$udom ".
6228: "in $courseid");
6229: return 'already_set';
6230: } else {
6231: my $start = time;
6232: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
6233: $udom,$uname);
6234: if ($putres eq 'ok') {
6235: &put('timerinterval',{"$courseid\0$res"=>$interval},
6236: $udom,$uname);
6237: &appenv(
6238: {
6239: 'course.'.$courseid.'.firstaccess.'.$res => $start,
6240: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
6241: }
6242: );
6243: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
6244: $cachedtimes{"$courseid\0$res"} = $start;
6245: }
6246: } elsif ($putres ne 'refused') {
6247: &logthis("Result: $putres when attempting to set first access time ".
6248: "(type: $type, extent: $res) for $uname:$udom in $courseid");
6249: }
6250: return $putres;
6251: }
6252: return 'already_set';
6253: }
6254: }
6255:
6256: # --------------------------------------------- Set Expire Date for Spreadsheet
6257:
6258: sub expirespread {
6259: my ($uname,$udom,$stype,$usymb)=@_;
6260: my $cid=$env{'request.course.id'};
6261: if ($cid) {
6262: my $now=time;
6263: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
6264: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
6265: $env{'course.'.$cid.'.num'}.
6266: ':nohist_expirationdates:'.
6267: &escape($key).'='.$now,
6268: $env{'course.'.$cid.'.home'})
6269: }
6270: return 'ok';
6271: }
6272:
6273: # ----------------------------------------------------- Devalidate Spreadsheets
6274:
6275: sub devalidate {
6276: my ($symb,$uname,$udom)=@_;
6277: my $cid=$env{'request.course.id'};
6278: if ($cid) {
6279: # delete the stored spreadsheets for
6280: # - the student level sheet of this user in course's homespace
6281: # - the assessment level sheet for this resource
6282: # for this user in user's homespace
6283: # - current conditional state info
6284: my $key=$uname.':'.$udom.':';
6285: my $status=
6286: &del('nohist_calculatedsheets',
6287: [$key.'studentcalc:'],
6288: $env{'course.'.$cid.'.domain'},
6289: $env{'course.'.$cid.'.num'})
6290: .' '.
6291: &del('nohist_calculatedsheets_'.$cid,
6292: [$key.'assesscalc:'.$symb],$udom,$uname);
6293: unless ($status eq 'ok ok') {
6294: &logthis('Could not devalidate spreadsheet '.
6295: $uname.' at '.$udom.' for '.
6296: $symb.': '.$status);
6297: }
6298: &delenv('user.state.'.$cid);
6299: }
6300: }
6301:
6302: sub get_scalar {
6303: my ($string,$end) = @_;
6304: my $value;
6305: if ($$string =~ s/^([^&]*?)($end)/$2/) {
6306: $value = $1;
6307: } elsif ($$string =~ s/^([^&]*?)&//) {
6308: $value = $1;
6309: }
6310: return &unescape($value);
6311: }
6312:
6313: sub array2str {
6314: my (@array) = @_;
6315: my $result=&arrayref2str(\@array);
6316: $result=~s/^__ARRAY_REF__//;
6317: $result=~s/__END_ARRAY_REF__$//;
6318: return $result;
6319: }
6320:
6321: sub arrayref2str {
6322: my ($arrayref) = @_;
6323: my $result='__ARRAY_REF__';
6324: foreach my $elem (@$arrayref) {
6325: if(ref($elem) eq 'ARRAY') {
6326: $result.=&arrayref2str($elem).'&';
6327: } elsif(ref($elem) eq 'HASH') {
6328: $result.=&hashref2str($elem).'&';
6329: } elsif(ref($elem)) {
6330: #print("Got a ref of ".(ref($elem))." skipping.");
6331: } else {
6332: $result.=&escape($elem).'&';
6333: }
6334: }
6335: $result=~s/\&$//;
6336: $result .= '__END_ARRAY_REF__';
6337: return $result;
6338: }
6339:
6340: sub hash2str {
6341: my (%hash) = @_;
6342: my $result=&hashref2str(\%hash);
6343: $result=~s/^__HASH_REF__//;
6344: $result=~s/__END_HASH_REF__$//;
6345: return $result;
6346: }
6347:
6348: sub hashref2str {
6349: my ($hashref)=@_;
6350: my $result='__HASH_REF__';
6351: foreach my $key (sort(keys(%$hashref))) {
6352: if (ref($key) eq 'ARRAY') {
6353: $result.=&arrayref2str($key).'=';
6354: } elsif (ref($key) eq 'HASH') {
6355: $result.=&hashref2str($key).'=';
6356: } elsif (ref($key)) {
6357: $result.='=';
6358: #print("Got a ref of ".(ref($key))." skipping.");
6359: } else {
6360: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
6361: }
6362:
6363: if(ref($hashref->{$key}) eq 'ARRAY') {
6364: $result.=&arrayref2str($hashref->{$key}).'&';
6365: } elsif(ref($hashref->{$key}) eq 'HASH') {
6366: $result.=&hashref2str($hashref->{$key}).'&';
6367: } elsif(ref($hashref->{$key})) {
6368: $result.='&';
6369: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
6370: } else {
6371: $result.=&escape($hashref->{$key}).'&';
6372: }
6373: }
6374: $result=~s/\&$//;
6375: $result .= '__END_HASH_REF__';
6376: return $result;
6377: }
6378:
6379: sub str2hash {
6380: my ($string)=@_;
6381: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6382: return %$hash;
6383: }
6384:
6385: sub str2hashref {
6386: my ($string) = @_;
6387:
6388: my %hash;
6389:
6390: if($string !~ /^__HASH_REF__/) {
6391: if (! ($string eq '' || !defined($string))) {
6392: $hash{'error'}='Not hash reference';
6393: }
6394: return (\%hash, $string);
6395: }
6396:
6397: $string =~ s/^__HASH_REF__//;
6398:
6399: while($string !~ /^__END_HASH_REF__/) {
6400: #key
6401: my $key='';
6402: if($string =~ /^__HASH_REF__/) {
6403: ($key, $string)=&str2hashref($string);
6404: if(defined($key->{'error'})) {
6405: $hash{'error'}='Bad data';
6406: return (\%hash, $string);
6407: }
6408: } elsif($string =~ /^__ARRAY_REF__/) {
6409: ($key, $string)=&str2arrayref($string);
6410: if($key->[0] eq 'Array reference error') {
6411: $hash{'error'}='Bad data';
6412: return (\%hash, $string);
6413: }
6414: } else {
6415: $string =~ s/^(.*?)=//;
6416: $key=&unescape($1);
6417: }
6418: $string =~ s/^=//;
6419:
6420: #value
6421: my $value='';
6422: if($string =~ /^__HASH_REF__/) {
6423: ($value, $string)=&str2hashref($string);
6424: if(defined($value->{'error'})) {
6425: $hash{'error'}='Bad data';
6426: return (\%hash, $string);
6427: }
6428: } elsif($string =~ /^__ARRAY_REF__/) {
6429: ($value, $string)=&str2arrayref($string);
6430: if($value->[0] eq 'Array reference error') {
6431: $hash{'error'}='Bad data';
6432: return (\%hash, $string);
6433: }
6434: } else {
6435: $value=&get_scalar(\$string,'__END_HASH_REF__');
6436: }
6437: $string =~ s/^&//;
6438:
6439: $hash{$key}=$value;
6440: }
6441:
6442: $string =~ s/^__END_HASH_REF__//;
6443:
6444: return (\%hash, $string);
6445: }
6446:
6447: sub str2array {
6448: my ($string)=@_;
6449: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6450: return @$array;
6451: }
6452:
6453: sub str2arrayref {
6454: my ($string) = @_;
6455: my @array;
6456:
6457: if($string !~ /^__ARRAY_REF__/) {
6458: if (! ($string eq '' || !defined($string))) {
6459: $array[0]='Array reference error';
6460: }
6461: return (\@array, $string);
6462: }
6463:
6464: $string =~ s/^__ARRAY_REF__//;
6465:
6466: while($string !~ /^__END_ARRAY_REF__/) {
6467: my $value='';
6468: if($string =~ /^__HASH_REF__/) {
6469: ($value, $string)=&str2hashref($string);
6470: if(defined($value->{'error'})) {
6471: $array[0] ='Array reference error';
6472: return (\@array, $string);
6473: }
6474: } elsif($string =~ /^__ARRAY_REF__/) {
6475: ($value, $string)=&str2arrayref($string);
6476: if($value->[0] eq 'Array reference error') {
6477: $array[0] ='Array reference error';
6478: return (\@array, $string);
6479: }
6480: } else {
6481: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6482: }
6483: $string =~ s/^&//;
6484:
6485: push(@array, $value);
6486: }
6487:
6488: $string =~ s/^__END_ARRAY_REF__//;
6489:
6490: return (\@array, $string);
6491: }
6492:
6493: # -------------------------------------------------------------------Temp Store
6494:
6495: sub tmpreset {
6496: my ($symb,$namespace,$domain,$stuname) = @_;
6497: if (!$symb) {
6498: $symb=&symbread();
6499: if (!$symb) { $symb= $env{'request.url'}; }
6500: }
6501: $symb=escape($symb);
6502:
6503: if (!$namespace) { $namespace=$env{'request.state'}; }
6504: $namespace=~s/\//\_/g;
6505: $namespace=~s/\W//g;
6506:
6507: if (!$domain) { $domain=$env{'user.domain'}; }
6508: if (!$stuname) { $stuname=$env{'user.name'}; }
6509: if ($domain eq 'public' && $stuname eq 'public') {
6510: $stuname=&get_requestor_ip();
6511: }
6512: my $path=LONCAPA::tempdir();
6513: my %hash;
6514: if (tie(%hash,'GDBM_File',
6515: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6516: &GDBM_WRCREAT(),0640)) {
6517: foreach my $key (keys(%hash)) {
6518: if ($key=~ /:$symb/) {
6519: delete($hash{$key});
6520: }
6521: }
6522: }
6523: }
6524:
6525: sub tmpstore {
6526: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6527:
6528: if (!$symb) {
6529: $symb=&symbread();
6530: if (!$symb) { $symb= $env{'request.url'}; }
6531: }
6532: $symb=escape($symb);
6533:
6534: if (!$namespace) {
6535: # I don't think we would ever want to store this for a course.
6536: # it seems this will only be used if we don't have a course.
6537: #$namespace=$env{'request.course.id'};
6538: #if (!$namespace) {
6539: $namespace=$env{'request.state'};
6540: #}
6541: }
6542: $namespace=~s/\//\_/g;
6543: $namespace=~s/\W//g;
6544: if (!$domain) { $domain=$env{'user.domain'}; }
6545: if (!$stuname) { $stuname=$env{'user.name'}; }
6546: if ($domain eq 'public' && $stuname eq 'public') {
6547: $stuname=&get_requestor_ip();
6548: }
6549: my $now=time;
6550: my %hash;
6551: my $path=LONCAPA::tempdir();
6552: if (tie(%hash,'GDBM_File',
6553: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6554: &GDBM_WRCREAT(),0640)) {
6555: $hash{"version:$symb"}++;
6556: my $version=$hash{"version:$symb"};
6557: my $allkeys='';
6558: foreach my $key (keys(%$storehash)) {
6559: $allkeys.=$key.':';
6560: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6561: }
6562: $hash{"$version:$symb:timestamp"}=$now;
6563: $allkeys.='timestamp';
6564: $hash{"$version:keys:$symb"}=$allkeys;
6565: if (untie(%hash)) {
6566: return 'ok';
6567: } else {
6568: return "error:$!";
6569: }
6570: } else {
6571: return "error:$!";
6572: }
6573: }
6574:
6575: # -----------------------------------------------------------------Temp Restore
6576:
6577: sub tmprestore {
6578: my ($symb,$namespace,$domain,$stuname) = @_;
6579:
6580: if (!$symb) {
6581: $symb=&symbread();
6582: if (!$symb) { $symb= $env{'request.url'}; }
6583: }
6584: $symb=escape($symb);
6585:
6586: if (!$namespace) { $namespace=$env{'request.state'}; }
6587:
6588: if (!$domain) { $domain=$env{'user.domain'}; }
6589: if (!$stuname) { $stuname=$env{'user.name'}; }
6590: if ($domain eq 'public' && $stuname eq 'public') {
6591: $stuname=&get_requestor_ip();
6592: }
6593: my %returnhash;
6594: $namespace=~s/\//\_/g;
6595: $namespace=~s/\W//g;
6596: my %hash;
6597: my $path=LONCAPA::tempdir();
6598: if (tie(%hash,'GDBM_File',
6599: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6600: &GDBM_READER(),0640)) {
6601: my $version=$hash{"version:$symb"};
6602: $returnhash{'version'}=$version;
6603: my $scope;
6604: for ($scope=1;$scope<=$version;$scope++) {
6605: my $vkeys=$hash{"$scope:keys:$symb"};
6606: my @keys=split(/:/,$vkeys);
6607: my $key;
6608: $returnhash{"$scope:keys"}=$vkeys;
6609: foreach $key (@keys) {
6610: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6611: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6612: }
6613: }
6614: if (!(untie(%hash))) {
6615: return "error:$!";
6616: }
6617: } else {
6618: return "error:$!";
6619: }
6620: return %returnhash;
6621: }
6622:
6623: # ----------------------------------------------------------------------- Store
6624:
6625: sub store {
6626: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6627: my $home='';
6628:
6629: if ($stuname) { $home=&homeserver($stuname,$domain); }
6630:
6631: $symb=&symbclean($symb);
6632: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6633:
6634: if (!$domain) { $domain=$env{'user.domain'}; }
6635: if (!$stuname) { $stuname=$env{'user.name'}; }
6636:
6637: &devalidate($symb,$stuname,$domain);
6638:
6639: $symb=escape($symb);
6640: if (!$namespace) {
6641: unless ($namespace=$env{'request.course.id'}) {
6642: return '';
6643: }
6644: }
6645: if (!$home) { $home=$env{'user.home'}; }
6646:
6647: $$storehash{'ip'}=&get_requestor_ip();
6648: $$storehash{'host'}=$perlvar{'lonHostID'};
6649:
6650: my $namevalue='';
6651: foreach my $key (keys(%$storehash)) {
6652: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6653: }
6654: $namevalue=~s/\&$//;
6655: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6656: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6657: }
6658:
6659: # -------------------------------------------------------------- Critical Store
6660:
6661: sub cstore {
6662: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6663: my $home='';
6664:
6665: if ($stuname) { $home=&homeserver($stuname,$domain); }
6666:
6667: $symb=&symbclean($symb);
6668: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6669:
6670: if (!$domain) { $domain=$env{'user.domain'}; }
6671: if (!$stuname) { $stuname=$env{'user.name'}; }
6672:
6673: &devalidate($symb,$stuname,$domain);
6674:
6675: $symb=escape($symb);
6676: if (!$namespace) {
6677: unless ($namespace=$env{'request.course.id'}) {
6678: return '';
6679: }
6680: }
6681: if (!$home) { $home=$env{'user.home'}; }
6682:
6683: $$storehash{'ip'}=&get_requestor_ip();
6684: $$storehash{'host'}=$perlvar{'lonHostID'};
6685:
6686: my $namevalue='';
6687: foreach my $key (keys(%$storehash)) {
6688: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6689: }
6690: $namevalue=~s/\&$//;
6691: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6692: return critical
6693: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6694: }
6695:
6696: # --------------------------------------------------------------------- Restore
6697:
6698: sub restore {
6699: my ($symb,$namespace,$domain,$stuname) = @_;
6700: my $home='';
6701:
6702: if ($stuname) { $home=&homeserver($stuname,$domain); }
6703:
6704: if (!$symb) {
6705: return if ($namespace eq 'courserequests');
6706: unless ($symb=escape(&symbread())) { return ''; }
6707: } else {
6708: unless ($namespace eq 'courserequests') {
6709: $symb=&escape(&symbclean($symb));
6710: }
6711: }
6712: if (!$namespace) {
6713: unless ($namespace=$env{'request.course.id'}) {
6714: return '';
6715: }
6716: }
6717: if (!$domain) { $domain=$env{'user.domain'}; }
6718: if (!$stuname) { $stuname=$env{'user.name'}; }
6719: if (!$home) { $home=$env{'user.home'}; }
6720: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6721:
6722: my %returnhash=();
6723: foreach my $line (split(/\&/,$answer)) {
6724: my ($name,$value)=split(/\=/,$line);
6725: $returnhash{&unescape($name)}=&thaw_unescape($value);
6726: }
6727: my $version;
6728: for ($version=1;$version<=$returnhash{'version'};$version++) {
6729: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6730: $returnhash{$item}=$returnhash{$version.':'.$item};
6731: }
6732: }
6733: return %returnhash;
6734: }
6735:
6736: # ---------------------------------------------------------- Course Description
6737: #
6738: #
6739:
6740: sub coursedescription {
6741: my ($courseid,$args)=@_;
6742: $courseid=~s/^\///;
6743: $courseid=~s/\_/\//g;
6744: my ($cdomain,$cnum)=split(/\//,$courseid);
6745: my $chome=&homeserver($cnum,$cdomain);
6746: my $normalid=$cdomain.'_'.$cnum;
6747: # need to always cache even if we get errors otherwise we keep
6748: # trying and trying and trying to get the course description.
6749: my %envhash=();
6750: my %returnhash=();
6751:
6752: my $expiretime=600;
6753: if ($env{'request.course.id'} eq $normalid) {
6754: $expiretime=120;
6755: }
6756:
6757: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6758: if (!$args->{'freshen_cache'}
6759: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6760: foreach my $key (keys(%env)) {
6761: next if ($key !~ /^\Q$prefix\E(.*)/);
6762: my ($setting) = $1;
6763: $returnhash{$setting} = $env{$key};
6764: }
6765: return %returnhash;
6766: }
6767:
6768: # get the data again
6769:
6770: if (!$args->{'one_time'}) {
6771: $envhash{'course.'.$normalid.'.last_cache'}=time;
6772: }
6773:
6774: if ($chome ne 'no_host') {
6775: %returnhash=&dump('environment',$cdomain,$cnum);
6776: if (!exists($returnhash{'con_lost'})) {
6777: my $username = $env{'user.name'}; # Defult username
6778: if(defined $args->{'user'}) {
6779: $username = $args->{'user'};
6780: }
6781: $returnhash{'home'}= $chome;
6782: $returnhash{'domain'} = $cdomain;
6783: $returnhash{'num'} = $cnum;
6784: if (!defined($returnhash{'type'})) {
6785: $returnhash{'type'} = 'Course';
6786: }
6787: while (my ($name,$value) = each %returnhash) {
6788: $envhash{'course.'.$normalid.'.'.$name}=$value;
6789: }
6790: $returnhash{'url'}=&clutter($returnhash{'url'});
6791: $returnhash{'fn'}=LONCAPA::tempdir() .
6792: $username.'_'.$cdomain.'_'.$cnum;
6793: $envhash{'course.'.$normalid.'.home'}=$chome;
6794: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6795: $envhash{'course.'.$normalid.'.num'}=$cnum;
6796: }
6797: }
6798: if (!$args->{'one_time'}) {
6799: &appenv(\%envhash);
6800: }
6801: return %returnhash;
6802: }
6803:
6804: sub update_released_required {
6805: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6806: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6807: $cid = $env{'request.course.id'};
6808: $cdom = $env{'course.'.$cid.'.domain'};
6809: $cnum = $env{'course.'.$cid.'.num'};
6810: $chome = $env{'course.'.$cid.'.home'};
6811: }
6812: if ($needsrelease) {
6813: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6814: my $needsupdate;
6815: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6816: $needsupdate = 1;
6817: } else {
6818: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6819: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6820: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6821: $needsupdate = 1;
6822: }
6823: }
6824: if ($needsupdate) {
6825: my %needshash = (
6826: 'internal.releaserequired' => $needsrelease,
6827: );
6828: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6829: if ($putresult eq 'ok') {
6830: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6831: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6832: if (ref($crsinfo{$cid}) eq 'HASH') {
6833: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6834: &courseidput($cdom,\%crsinfo,$chome,'notime');
6835: }
6836: }
6837: }
6838: }
6839: return;
6840: }
6841:
6842: # -------------------------------------------------See if a user is privileged
6843:
6844: sub privileged {
6845: my ($username,$domain,$possdomains,$possroles)=@_;
6846: my $now = time;
6847: my $roles;
6848: if (ref($possroles) eq 'ARRAY') {
6849: $roles = $possroles;
6850: } else {
6851: $roles = ['dc','su'];
6852: }
6853: if (ref($possdomains) eq 'ARRAY') {
6854: my %privileged = &privileged_by_domain($possdomains,$roles);
6855: foreach my $dom (@{$possdomains}) {
6856: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6857: (ref($privileged{$dom}) eq 'HASH')) {
6858: foreach my $role (@{$roles}) {
6859: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6860: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6861: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6862: return 1 unless (($end && $end < $now) ||
6863: ($start && $start > $now));
6864: }
6865: }
6866: }
6867: }
6868: }
6869: } else {
6870: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6871: my $now = time;
6872:
6873: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6874: my ($trole, $tend, $tstart) = split(/_/, $role);
6875: if (grep(/^\Q$trole\E$/,@{$roles})) {
6876: return 1 unless ($tend && $tend < $now)
6877: or ($tstart && $tstart > $now);
6878: }
6879: }
6880: }
6881: return 0;
6882: }
6883:
6884: sub privileged_by_domain {
6885: my ($domains,$roles) = @_;
6886: my %privileged = ();
6887: my $cachetime = 60*60*24;
6888: my $now = time;
6889: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6890: return %privileged;
6891: }
6892: foreach my $dom (@{$domains}) {
6893: next if (ref($privileged{$dom}) eq 'HASH');
6894: my $needroles;
6895: foreach my $role (@{$roles}) {
6896: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6897: if (defined($cached)) {
6898: if (ref($result) eq 'HASH') {
6899: $privileged{$dom}{$role} = $result;
6900: }
6901: } else {
6902: $needroles = 1;
6903: }
6904: }
6905: if ($needroles) {
6906: my %dompersonnel = &get_domain_roles($dom,$roles);
6907: $privileged{$dom} = {};
6908: foreach my $server (keys(%dompersonnel)) {
6909: if (ref($dompersonnel{$server}) eq 'HASH') {
6910: foreach my $item (keys(%{$dompersonnel{$server}})) {
6911: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6912: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6913: next if ($end && $end < $now);
6914: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6915: $dompersonnel{$server}{$item};
6916: }
6917: }
6918: }
6919: if (ref($privileged{$dom}) eq 'HASH') {
6920: foreach my $role (@{$roles}) {
6921: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6922: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6923: } else {
6924: my %hash = ();
6925: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6926: }
6927: }
6928: }
6929: }
6930: }
6931: return %privileged;
6932: }
6933:
6934: # -------------------------------------------------------- Get user privileges
6935:
6936: sub rolesinit {
6937: my ($domain, $username) = @_;
6938: my %userroles = ('user.login.time' => time);
6939: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6940:
6941: # firstaccess and timerinterval are related to timed maps/resources.
6942: # also, blocking can be triggered by an activating timer
6943: # it's saved in the user's %env.
6944: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6945: my %timerinterval = &dump('timerinterval', $domain, $username);
6946: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6947: %timerintchk, %timerintenv);
6948:
6949: foreach my $key (keys(%firstaccess)) {
6950: my ($cid, $rest) = split(/\0/, $key);
6951: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6952: }
6953:
6954: foreach my $key (keys(%timerinterval)) {
6955: my ($cid,$rest) = split(/\0/,$key);
6956: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6957: }
6958:
6959: my %allroles=();
6960: my %allgroups=();
6961:
6962: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6963: my $role = $rolesdump{$area};
6964: $area =~ s/\_\w\w$//;
6965:
6966: my ($trole, $tend, $tstart, $group_privs);
6967:
6968: if ($role =~ /^cr/) {
6969: # Custom role, defined by a user
6970: # e.g., user.role.cr/msu/smith/mynewrole
6971: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6972: $trole = $1;
6973: ($tend, $tstart) = split('_', $2);
6974: } else {
6975: $trole = $role;
6976: }
6977: } elsif ($role =~ m|^gr/|) {
6978: # Role of member in a group, defined within a course/community
6979: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6980: ($trole, $tend, $tstart) = split(/_/, $role);
6981: next if $tstart eq '-1';
6982: ($trole, $group_privs) = split(/\//, $trole);
6983: $group_privs = &unescape($group_privs);
6984: } else {
6985: # Just a normal role, defined in roles.tab
6986: ($trole, $tend, $tstart) = split(/_/,$role);
6987: }
6988:
6989: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6990: $username);
6991: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6992:
6993: # role expired or not available yet?
6994: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6995: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6996:
6997: next if $area eq '' or $trole eq '';
6998:
6999: my $spec = "$trole.$area";
7000: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
7001:
7002: if ($trole =~ /^cr\//) {
7003: # Custom role, defined by a user
7004: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7005: } elsif ($trole eq 'gr') {
7006: # Role of a member in a group, defined within a course/community
7007: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
7008: next;
7009: } else {
7010: # Normal role, defined in roles.tab
7011: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7012: }
7013:
7014: my $cid = $tdomain.'_'.$trest;
7015: unless ($firstaccchk{$cid}) {
7016: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
7017: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
7018: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
7019: $coursetimerstarts{$cid}{$item};
7020: }
7021: }
7022: $firstaccchk{$cid} = 1;
7023: }
7024: unless ($timerintchk{$cid}) {
7025: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
7026: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
7027: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
7028: $coursetimerintervals{$cid}{$item};
7029: }
7030: }
7031: $timerintchk{$cid} = 1;
7032: }
7033: }
7034:
7035: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
7036: \%allroles, \%allgroups);
7037: $env{'user.adv'} = $userroles{'user.adv'};
7038: $env{'user.rar'} = $userroles{'user.rar'};
7039:
7040: return (\%userroles,\%firstaccenv,\%timerintenv);
7041: }
7042:
7043: sub set_arearole {
7044: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
7045: unless ($nolog) {
7046: # log the associated role with the area
7047: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
7048: }
7049: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
7050: }
7051:
7052: sub custom_roleprivs {
7053: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
7054: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
7055: my $homsvr = &homeserver($rauthor,$rdomain);
7056: if (&hostname($homsvr) ne '') {
7057: my ($rdummy,$roledef)=
7058: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
7059: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
7060: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
7061: if (defined($syspriv)) {
7062: if ($trest =~ /^$match_community$/) {
7063: $syspriv =~ s/bre\&S//;
7064: }
7065: $$allroles{'cm./'}.=':'.$syspriv;
7066: $$allroles{$spec.'./'}.=':'.$syspriv;
7067: }
7068: if ($tdomain ne '') {
7069: if (defined($dompriv)) {
7070: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
7071: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
7072: }
7073: if (($trest ne '') && (defined($coursepriv))) {
7074: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
7075: my $rolename = $1;
7076: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
7077: }
7078: $$allroles{'cm.'.$area}.=':'.$coursepriv;
7079: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
7080: }
7081: }
7082: }
7083: }
7084: }
7085:
7086: sub course_adhocrole_privs {
7087: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
7088: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
7089: if ($overrides{"internal.adhocpriv.$rolename"}) {
7090: my (%currprivs,%storeprivs);
7091: foreach my $item (split(/:/,$coursepriv)) {
7092: my ($priv,$restrict) = split(/\&/,$item);
7093: $currprivs{$priv} = $restrict;
7094: }
7095: my (%possadd,%possremove,%full);
7096: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
7097: my ($priv,$restrict)=split(/\&/,$item);
7098: $full{$priv} = $restrict;
7099: }
7100: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
7101: next if ($item eq '');
7102: my ($rule,$rest) = split(/=/,$item);
7103: next unless (($rule eq 'off') || ($rule eq 'on'));
7104: foreach my $priv (split(/:/,$rest)) {
7105: if ($priv ne '') {
7106: if ($rule eq 'off') {
7107: $possremove{$priv} = 1;
7108: } else {
7109: $possadd{$priv} = 1;
7110: }
7111: }
7112: }
7113: }
7114: foreach my $priv (sort(keys(%full))) {
7115: if (exists($currprivs{$priv})) {
7116: unless (exists($possremove{$priv})) {
7117: $storeprivs{$priv} = $currprivs{$priv};
7118: }
7119: } elsif (exists($possadd{$priv})) {
7120: $storeprivs{$priv} = $full{$priv};
7121: }
7122: }
7123: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
7124: }
7125: return $coursepriv;
7126: }
7127:
7128: sub group_roleprivs {
7129: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
7130: my $access = 1;
7131: my $now = time;
7132: if (($tend!=0) && ($tend<$now)) { $access = 0; }
7133: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
7134: if ($access) {
7135: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
7136: $$allgroups{$course}{$group} .=':'.$group_privs;
7137: }
7138: }
7139:
7140: sub standard_roleprivs {
7141: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
7142: if (defined($pr{$trole.':s'})) {
7143: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
7144: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
7145: }
7146: if ($tdomain ne '') {
7147: if (defined($pr{$trole.':d'})) {
7148: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7149: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7150: }
7151: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
7152: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
7153: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
7154: }
7155: }
7156: }
7157:
7158: sub set_userprivs {
7159: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
7160: my $author=0;
7161: my $adv=0;
7162: my $rar=0;
7163: my %grouproles = ();
7164: if (keys(%{$allgroups}) > 0) {
7165: my @groupkeys;
7166: foreach my $role (keys(%{$allroles})) {
7167: push(@groupkeys,$role);
7168: }
7169: if (ref($groups_roles) eq 'HASH') {
7170: foreach my $key (keys(%{$groups_roles})) {
7171: unless (grep(/^\Q$key\E$/,@groupkeys)) {
7172: push(@groupkeys,$key);
7173: }
7174: }
7175: }
7176: if (@groupkeys > 0) {
7177: foreach my $role (@groupkeys) {
7178: my ($trole,$area,$sec,$extendedarea);
7179: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
7180: $trole = $1;
7181: $area = $2;
7182: $sec = $3;
7183: $extendedarea = $area.$sec;
7184: if (exists($$allgroups{$area})) {
7185: foreach my $group (keys(%{$$allgroups{$area}})) {
7186: my $spec = $trole.'.'.$extendedarea;
7187: $grouproles{$spec.'.'.$area.'/'.$group} =
7188: $$allgroups{$area}{$group};
7189: }
7190: }
7191: }
7192: }
7193: }
7194: }
7195: foreach my $group (keys(%grouproles)) {
7196: $$allroles{$group} = $grouproles{$group};
7197: }
7198: foreach my $role (keys(%{$allroles})) {
7199: my %thesepriv;
7200: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
7201: foreach my $item (split(/:/,$$allroles{$role})) {
7202: if ($item ne '') {
7203: my ($privilege,$restrictions)=split(/&/,$item);
7204: if ($restrictions eq '') {
7205: $thesepriv{$privilege}='F';
7206: } elsif ($thesepriv{$privilege} ne 'F') {
7207: $thesepriv{$privilege}.=$restrictions;
7208: }
7209: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
7210: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
7211: }
7212: }
7213: my $thesestr='';
7214: foreach my $priv (sort(keys(%thesepriv))) {
7215: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
7216: }
7217: $userroles->{'user.priv.'.$role} = $thesestr;
7218: }
7219: return ($author,$adv,$rar);
7220: }
7221:
7222: sub role_status {
7223: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
7224: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
7225: my ($one,$two) = split(m{\./},$rolekey,2);
7226: (undef,undef,$$role) = split(/\./,$one,3);
7227: unless (!defined($$role) || $$role eq '') {
7228: $$where = '/'.$two;
7229: $$trolecode=$$role.'.'.$$where;
7230: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
7231: $$tstatus='is';
7232: if ($$tstart && $$tstart>$update) {
7233: $$tstatus='future';
7234: if ($$tstart<$now) {
7235: if ($$tstart && $$tstart>$refresh) {
7236: if (($$where ne '') && ($$role ne '')) {
7237: my (%allroles,%allgroups,$group_privs,
7238: %groups_roles,@rolecodes);
7239: my %userroles = (
7240: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
7241: );
7242: @rolecodes = ('cm');
7243: my $spec=$$role.'.'.$$where;
7244: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
7245: if ($$role =~ /^cr\//) {
7246: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
7247: push(@rolecodes,'cr');
7248: } elsif ($$role eq 'gr') {
7249: push(@rolecodes,$$role);
7250: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
7251: $env{'user.name'});
7252: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
7253: (undef,my $group_privs) = split(/\//,$trole);
7254: $group_privs = &unescape($group_privs);
7255: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
7256: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
7257: &get_groups_roles($tdomain,$trest,
7258: \%course_roles,\@rolecodes,
7259: \%groups_roles);
7260: } else {
7261: push(@rolecodes,$$role);
7262: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
7263: }
7264: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
7265: \%groups_roles);
7266: &appenv(\%userroles,\@rolecodes);
7267: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7268: }
7269: }
7270: $$tstatus = 'is';
7271: }
7272: }
7273: if ($$tend) {
7274: if ($$tend<$update) {
7275: $$tstatus='expired';
7276: } elsif ($$tend<$now) {
7277: $$tstatus='will_not';
7278: }
7279: }
7280: }
7281: }
7282: }
7283:
7284: sub get_groups_roles {
7285: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
7286: return unless((ref($cdom_courseroles) eq 'HASH') &&
7287: (ref($rolecodes) eq 'ARRAY') &&
7288: (ref($groups_roles) eq 'HASH'));
7289: if (keys(%{$cdom_courseroles}) > 0) {
7290: my ($cnum) = ($rest =~ /^($match_courseid)/);
7291: if ($cdom ne '' && $cnum ne '') {
7292: foreach my $key (keys(%{$cdom_courseroles})) {
7293: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
7294: my $crsrole = $1;
7295: my $crssec = $2;
7296: if ($crsrole =~ /^cr/) {
7297: unless (grep(/^cr$/,@{$rolecodes})) {
7298: push(@{$rolecodes},'cr');
7299: }
7300: } else {
7301: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
7302: push(@{$rolecodes},$crsrole);
7303: }
7304: }
7305: my $rolekey = "$crsrole./$cdom/$cnum";
7306: if ($crssec ne '') {
7307: $rolekey .= "/$crssec";
7308: }
7309: $rolekey .= './';
7310: $groups_roles->{$rolekey} = $rolecodes;
7311: }
7312: }
7313: }
7314: }
7315: return;
7316: }
7317:
7318: sub delete_env_groupprivs {
7319: my ($where,$courseroles,$possroles) = @_;
7320: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
7321: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
7322: unless (ref($courseroles->{$udom}) eq 'HASH') {
7323: %{$courseroles->{$udom}} =
7324: &get_my_roles('','','userroles',['active'],
7325: $possroles,[$udom],1);
7326: }
7327: if (ref($courseroles->{$udom}) eq 'HASH') {
7328: foreach my $item (keys(%{$courseroles->{$udom}})) {
7329: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
7330: my $area = '/'.$cdom.'/'.$cnum;
7331: my $privkey = "user.priv.$crsrole.$area";
7332: if ($crssec ne '') {
7333: $privkey .= '/'.$crssec;
7334: }
7335: $privkey .= ".$area/$group";
7336: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
7337: }
7338: }
7339: return;
7340: }
7341:
7342: sub check_adhoc_privs {
7343: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
7344: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
7345: if ($sec) {
7346: $cckey .= '/'.$sec;
7347: }
7348: my $setprivs;
7349: if ($env{$cckey}) {
7350: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
7351: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
7352: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
7353: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7354: $setprivs = 1;
7355: }
7356: } else {
7357: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7358: $setprivs = 1;
7359: }
7360: return $setprivs;
7361: }
7362:
7363: sub set_adhoc_privileges {
7364: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
7365: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
7366: my $area = '/'.$dcdom.'/'.$pickedcourse;
7367: if ($sec ne '') {
7368: $area .= '/'.$sec;
7369: }
7370: my $spec = $role.'.'.$area;
7371: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
7372: $env{'user.name'},1);
7373: my %rolehash = ();
7374: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7375: my $rolename = $1;
7376: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7377: my %domdef = &get_domain_defaults($dcdom);
7378: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7379: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7380: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7381: }
7382: }
7383: } else {
7384: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7385: }
7386: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7387: &appenv(\%userroles,[$role,'cm']);
7388: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7389: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7390: ($caller eq 'tiny')) {
7391: &appenv( {'request.role' => $spec,
7392: 'request.role.domain' => $dcdom,
7393: 'request.course.sec' => $sec,
7394: }
7395: );
7396: my $tadv=0;
7397: if (&allowed('adv') eq 'F') { $tadv=1; }
7398: &appenv({'request.role.adv' => $tadv});
7399: }
7400: }
7401:
7402: # --------------------------------------------------------------- get interface
7403:
7404: sub get {
7405: my ($namespace,$storearr,$udomain,$uname)=@_;
7406: my $items='';
7407: foreach my $item (@$storearr) {
7408: $items.=&escape($item).'&';
7409: }
7410: $items=~s/\&$//;
7411: if (!$udomain) { $udomain=$env{'user.domain'}; }
7412: if (!$uname) { $uname=$env{'user.name'}; }
7413: my $uhome=&homeserver($uname,$udomain);
7414:
7415: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7416: my @pairs=split(/\&/,$rep);
7417: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7418: return @pairs;
7419: }
7420: my %returnhash=();
7421: my $i=0;
7422: foreach my $item (@$storearr) {
7423: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7424: $i++;
7425: }
7426: return %returnhash;
7427: }
7428:
7429: # --------------------------------------------------------------- del interface
7430:
7431: sub del {
7432: my ($namespace,$storearr,$udomain,$uname)=@_;
7433: my $items='';
7434: foreach my $item (@$storearr) {
7435: $items.=&escape($item).'&';
7436: }
7437:
7438: $items=~s/\&$//;
7439: if (!$udomain) { $udomain=$env{'user.domain'}; }
7440: if (!$uname) { $uname=$env{'user.name'}; }
7441: my $uhome=&homeserver($uname,$udomain);
7442: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7443: }
7444:
7445: # -------------------------------------------------------------- dump interface
7446:
7447: sub unserialize {
7448: my ($rep, $escapedkeys) = @_;
7449:
7450: return {} if $rep =~ /^error/;
7451:
7452: my %returnhash=();
7453: foreach my $item (split(/\&/,$rep)) {
7454: my ($key, $value) = split(/=/, $item, 2);
7455: $key = unescape($key) unless $escapedkeys;
7456: next if $key =~ /^error: 2 /;
7457: $returnhash{$key} = &thaw_unescape($value);
7458: }
7459: #return %returnhash;
7460: return \%returnhash;
7461: }
7462:
7463: # see Lond::dump_with_regexp
7464: # if $escapedkeys hash keys won't get unescaped.
7465: sub dump {
7466: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
7467: if (!$udomain) { $udomain=$env{'user.domain'}; }
7468: if (!$uname) { $uname=$env{'user.name'}; }
7469: my $uhome=&homeserver($uname,$udomain);
7470:
7471: if ($regexp) {
7472: $regexp=&escape($regexp);
7473: } else {
7474: $regexp='.';
7475: }
7476: if (grep { $_ eq $uhome } current_machine_ids()) {
7477: # user is hosted on this machine
7478: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7479: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7480: return %{unserialize($reply, $escapedkeys)};
7481: }
7482: my $rep;
7483: if ($encrypt) {
7484: $rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7485: } else {
7486: $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7487: }
7488: my @pairs=split(/\&/,$rep);
7489: my %returnhash=();
7490: if (!($rep =~ /^error/ )) {
7491: foreach my $item (@pairs) {
7492: my ($key,$value)=split(/=/,$item,2);
7493: $key = unescape($key) unless $escapedkeys;
7494: #$key = &unescape($key);
7495: next if ($key =~ /^error: 2 /);
7496: $returnhash{$key}=&thaw_unescape($value);
7497: }
7498: }
7499: return %returnhash;
7500: }
7501:
7502:
7503: # --------------------------------------------------------- dumpstore interface
7504:
7505: sub dumpstore {
7506: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7507: # same as dump but keys must be escaped. They may contain colon separated
7508: # lists of values that may themself contain colons (e.g. symbs).
7509: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7510: }
7511:
7512: # -------------------------------------------------------------- keys interface
7513:
7514: sub getkeys {
7515: my ($namespace,$udomain,$uname)=@_;
7516: if (!$udomain) { $udomain=$env{'user.domain'}; }
7517: if (!$uname) { $uname=$env{'user.name'}; }
7518: my $uhome=&homeserver($uname,$udomain);
7519: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7520: my @keyarray=();
7521: foreach my $key (split(/\&/,$rep)) {
7522: next if ($key =~ /^error: 2 /);
7523: push(@keyarray,&unescape($key));
7524: }
7525: return @keyarray;
7526: }
7527:
7528: # --------------------------------------------------------------- currentdump
7529: sub currentdump {
7530: my ($courseid,$sdom,$sname)=@_;
7531: $courseid = $env{'request.course.id'} if (! defined($courseid));
7532: $sdom = $env{'user.domain'} if (! defined($sdom));
7533: $sname = $env{'user.name'} if (! defined($sname));
7534: my $uhome = &homeserver($sname,$sdom);
7535: my $rep;
7536:
7537: if (grep { $_ eq $uhome } current_machine_ids()) {
7538: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7539: $courseid)));
7540: } else {
7541: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7542: }
7543:
7544: return if ($rep =~ /^(error:|no_such_host)/);
7545: #
7546: my %returnhash=();
7547: #
7548: if ($rep eq 'unknown_cmd') {
7549: # an old lond will not know currentdump
7550: # Do a dump and make it look like a currentdump
7551: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7552: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7553: my %hash = @tmp;
7554: @tmp=();
7555: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7556: } else {
7557: my @pairs=split(/\&/,$rep);
7558: foreach my $pair (@pairs) {
7559: my ($key,$value)=split(/=/,$pair,2);
7560: my ($symb,$param) = split(/:/,$key);
7561: $returnhash{&unescape($symb)}->{&unescape($param)} =
7562: &thaw_unescape($value);
7563: }
7564: }
7565: return %returnhash;
7566: }
7567:
7568: sub convert_dump_to_currentdump{
7569: my %hash = %{shift()};
7570: my %returnhash;
7571: # Code ripped from lond, essentially. The only difference
7572: # here is the unescaping done by lonnet::dump(). Conceivably
7573: # we might run in to problems with parameter names =~ /^v\./
7574: while (my ($key,$value) = each(%hash)) {
7575: my ($v,$symb,$param) = split(/:/,$key);
7576: $symb = &unescape($symb);
7577: $param = &unescape($param);
7578: next if ($v eq 'version' || $symb eq 'keys');
7579: next if (exists($returnhash{$symb}) &&
7580: exists($returnhash{$symb}->{$param}) &&
7581: $returnhash{$symb}->{'v.'.$param} > $v);
7582: $returnhash{$symb}->{$param}=$value;
7583: $returnhash{$symb}->{'v.'.$param}=$v;
7584: }
7585: #
7586: # Remove all of the keys in the hashes which keep track of
7587: # the version of the parameter.
7588: while (my ($symb,$param_hash) = each(%returnhash)) {
7589: # use a foreach because we are going to delete from the hash.
7590: foreach my $key (keys(%$param_hash)) {
7591: delete($param_hash->{$key}) if ($key =~ /^v\./);
7592: }
7593: }
7594: return \%returnhash;
7595: }
7596:
7597: # ------------------------------------------------------ critical inc interface
7598:
7599: sub cinc {
7600: return &inc(@_,'critical');
7601: }
7602:
7603: # --------------------------------------------------------------- inc interface
7604:
7605: sub inc {
7606: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7607: if (!$udomain) { $udomain=$env{'user.domain'}; }
7608: if (!$uname) { $uname=$env{'user.name'}; }
7609: my $uhome=&homeserver($uname,$udomain);
7610: my $items='';
7611: if (! ref($store)) {
7612: # got a single value, so use that instead
7613: $items = &escape($store).'=&';
7614: } elsif (ref($store) eq 'SCALAR') {
7615: $items = &escape($$store).'=&';
7616: } elsif (ref($store) eq 'ARRAY') {
7617: $items = join('=&',map {&escape($_);} @{$store});
7618: } elsif (ref($store) eq 'HASH') {
7619: while (my($key,$value) = each(%{$store})) {
7620: $items.= &escape($key).'='.&escape($value).'&';
7621: }
7622: }
7623: $items=~s/\&$//;
7624: if ($critical) {
7625: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7626: } else {
7627: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7628: }
7629: }
7630:
7631: # --------------------------------------------------------------- put interface
7632:
7633: sub put {
7634: my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
7635: if (!$udomain) { $udomain=$env{'user.domain'}; }
7636: if (!$uname) { $uname=$env{'user.name'}; }
7637: my $uhome=&homeserver($uname,$udomain);
7638: my $items='';
7639: foreach my $item (keys(%$storehash)) {
7640: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7641: }
7642: $items=~s/\&$//;
7643: if ($encrypt) {
7644: return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
7645: } else {
7646: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7647: }
7648: }
7649:
7650: # ------------------------------------------------------------ newput interface
7651:
7652: sub newput {
7653: my ($namespace,$storehash,$udomain,$uname)=@_;
7654: if (!$udomain) { $udomain=$env{'user.domain'}; }
7655: if (!$uname) { $uname=$env{'user.name'}; }
7656: my $uhome=&homeserver($uname,$udomain);
7657: my $items='';
7658: foreach my $key (keys(%$storehash)) {
7659: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7660: }
7661: $items=~s/\&$//;
7662: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7663: }
7664:
7665: # --------------------------------------------------------- putstore interface
7666:
7667: sub putstore {
7668: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7669: if (!$udomain) { $udomain=$env{'user.domain'}; }
7670: if (!$uname) { $uname=$env{'user.name'}; }
7671: my $uhome=&homeserver($uname,$udomain);
7672: my $items='';
7673: foreach my $key (keys(%$storehash)) {
7674: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7675: }
7676: $items=~s/\&$//;
7677: my $esc_symb=&escape($symb);
7678: my $esc_v=&escape($version);
7679: my $reply =
7680: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7681: $uhome);
7682: if (($tolog) && ($reply eq 'ok')) {
7683: my $namevalue='';
7684: foreach my $key (keys(%{$storehash})) {
7685: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7686: }
7687: my $ip = &get_requestor_ip();
7688: $namevalue .= 'ip='.&escape($ip).
7689: '&host='.&escape($perlvar{'lonHostID'}).
7690: '&version='.$esc_v.
7691: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7692: &courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7693: }
7694: if ($reply eq 'unknown_cmd') {
7695: # gfall back to way things use to be done
7696: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7697: $uname);
7698: }
7699: return $reply;
7700: }
7701:
7702: sub old_putstore {
7703: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7704: if (!$udomain) { $udomain=$env{'user.domain'}; }
7705: if (!$uname) { $uname=$env{'user.name'}; }
7706: my $uhome=&homeserver($uname,$udomain);
7707: my %newstorehash;
7708: foreach my $item (keys(%$storehash)) {
7709: my $key = $version.':'.&escape($symb).':'.$item;
7710: $newstorehash{$key} = $storehash->{$item};
7711: }
7712: my $items='';
7713: my %allitems = ();
7714: foreach my $item (keys(%newstorehash)) {
7715: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7716: my $key = $1.':keys:'.$2;
7717: $allitems{$key} .= $3.':';
7718: }
7719: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7720: }
7721: foreach my $item (keys(%allitems)) {
7722: $allitems{$item} =~ s/\:$//;
7723: $items.= $item.'='.$allitems{$item}.'&';
7724: }
7725: $items=~s/\&$//;
7726: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7727: }
7728:
7729: # ------------------------------------------------------ critical put interface
7730:
7731: sub cput {
7732: my ($namespace,$storehash,$udomain,$uname)=@_;
7733: if (!$udomain) { $udomain=$env{'user.domain'}; }
7734: if (!$uname) { $uname=$env{'user.name'}; }
7735: my $uhome=&homeserver($uname,$udomain);
7736: my $items='';
7737: foreach my $item (keys(%$storehash)) {
7738: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7739: }
7740: $items=~s/\&$//;
7741: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7742: }
7743:
7744: # -------------------------------------------------------------- eget interface
7745:
7746: sub eget {
7747: my ($namespace,$storearr,$udomain,$uname)=@_;
7748: my $items='';
7749: foreach my $item (@$storearr) {
7750: $items.=&escape($item).'&';
7751: }
7752: $items=~s/\&$//;
7753: if (!$udomain) { $udomain=$env{'user.domain'}; }
7754: if (!$uname) { $uname=$env{'user.name'}; }
7755: my $uhome=&homeserver($uname,$udomain);
7756: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7757: my @pairs=split(/\&/,$rep);
7758: my %returnhash=();
7759: my $i=0;
7760: foreach my $item (@$storearr) {
7761: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7762: $i++;
7763: }
7764: return %returnhash;
7765: }
7766:
7767: # ------------------------------------------------------------ tmpput interface
7768: sub tmpput {
7769: my ($storehash,$server,$context)=@_;
7770: my $items='';
7771: foreach my $item (keys(%$storehash)) {
7772: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7773: }
7774: $items=~s/\&$//;
7775: if (defined($context)) {
7776: $items .= ':'.&escape($context);
7777: }
7778: return &reply("tmpput:$items",$server);
7779: }
7780:
7781: # ------------------------------------------------------------ tmpget interface
7782: sub tmpget {
7783: my ($token,$server)=@_;
7784: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7785: my $rep=&reply("tmpget:$token",$server);
7786: my %returnhash;
7787: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7788: return %returnhash;
7789: }
7790: foreach my $item (split(/\&/,$rep)) {
7791: my ($key,$value)=split(/=/,$item);
7792: $returnhash{&unescape($key)}=&thaw_unescape($value);
7793: }
7794: return %returnhash;
7795: }
7796:
7797: # ------------------------------------------------------------ tmpdel interface
7798: sub tmpdel {
7799: my ($token,$server)=@_;
7800: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7801: return &reply("tmpdel:$token",$server);
7802: }
7803:
7804: # ------------------------------------------------------------ get_timebased_id
7805:
7806: sub get_timebased_id {
7807: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7808: $maxtries) = @_;
7809: my ($newid,$error,$dellock);
7810: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7811: return ('','ok','invalid call to get suffix');
7812: }
7813:
7814: # set defaults for any optional args for which values were not supplied
7815: if ($who eq '') {
7816: $who = $env{'user.name'}.':'.$env{'user.domain'};
7817: }
7818: if (!$locktries) {
7819: $locktries = 3;
7820: }
7821: if (!$maxtries) {
7822: $maxtries = 10;
7823: }
7824:
7825: if (($cdom eq '') || ($cnum eq '')) {
7826: if ($env{'request.course.id'}) {
7827: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7828: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7829: }
7830: if (($cdom eq '') || ($cnum eq '')) {
7831: return ('','ok','call to get suffix not in course context');
7832: }
7833: }
7834:
7835: # construct locking item
7836: my $lockhash = {
7837: $prefix."\0".'locked_'.$keyid => $who,
7838: };
7839: my $tries = 0;
7840:
7841: # attempt to get lock on nohist_$namespace file
7842: my $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7843: while (($gotlock ne 'ok') && $tries <$locktries) {
7844: $tries ++;
7845: sleep 1;
7846: $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7847: }
7848:
7849: # attempt to get unique identifier, based on current timestamp
7850: if ($gotlock eq 'ok') {
7851: my %inuse = &dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7852: my $id = time;
7853: $newid = $id;
7854: if ($idtype eq 'addcode') {
7855: $newid .= &sixnum_code();
7856: }
7857: my $idtries = 0;
7858: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7859: if ($idtype eq 'concat') {
7860: $newid = $id.$idtries;
7861: } elsif ($idtype eq 'addcode') {
7862: $newid = $newid.&sixnum_code();
7863: } else {
7864: $newid ++;
7865: }
7866: $idtries ++;
7867: }
7868: if (!exists($inuse{$prefix."\0".$newid})) {
7869: my %new_item = (
7870: $prefix."\0".$newid => $who,
7871: );
7872: my $putresult = &put('nohist_'.$namespace,\%new_item,
7873: $cdom,$cnum);
7874: if ($putresult ne 'ok') {
7875: undef($newid);
7876: $error = 'error saving new item: '.$putresult;
7877: }
7878: } else {
7879: undef($newid);
7880: $error = ('error: no unique suffix available for the new item ');
7881: }
7882: # remove lock
7883: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7884: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7885: } else {
7886: $error = "error: could not obtain lockfile\n";
7887: $dellock = 'ok';
7888: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7889: $dellock = 'nolock';
7890: }
7891: }
7892: return ($newid,$dellock,$error);
7893: }
7894:
7895: sub sixnum_code {
7896: my $code;
7897: for (0..6) {
7898: $code .= int( rand(9) );
7899: }
7900: return $code;
7901: }
7902:
7903: # -------------------------------------------------- portfolio access checking
7904:
7905: sub portfolio_access {
7906: my ($requrl,$clientip) = @_;
7907: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7908: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7909: if ($result) {
7910: my %setters;
7911: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7912: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7913: &Apache::loncommon::blockcheck(\%setters,'port',$clientip,$unum,$udom);
7914: if (($startblock && $endblock) || ($by_ip)) {
7915: return 'B';
7916: }
7917: } else {
7918: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7919: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
7920: if (($startblock && $endblock) || ($by_ip)) {
7921: return 'B';
7922: }
7923: }
7924: }
7925: if ($result eq 'ok') {
7926: return 'F';
7927: } elsif ($result =~ /^[^:]+:guest_/) {
7928: return 'A';
7929: }
7930: return '';
7931: }
7932:
7933: sub get_portfolio_access {
7934: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7935:
7936: if (!ref($access_hash)) {
7937: my $current_perms = &get_portfile_permissions($udom,$unum);
7938: my %access_controls = &get_access_controls($current_perms,$group,
7939: $file_name);
7940: $access_hash = $access_controls{$file_name};
7941: }
7942:
7943: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7944: my $now = time;
7945: if (ref($access_hash) eq 'HASH') {
7946: foreach my $key (keys(%{$access_hash})) {
7947: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7948: if ($start > $now) {
7949: next;
7950: }
7951: if ($end && $end<$now) {
7952: next;
7953: }
7954: if ($scope eq 'public') {
7955: $public = $key;
7956: last;
7957: } elsif ($scope eq 'guest') {
7958: $guest = $key;
7959: } elsif ($scope eq 'domains') {
7960: push(@domains,$key);
7961: } elsif ($scope eq 'users') {
7962: push(@users,$key);
7963: } elsif ($scope eq 'course') {
7964: push(@courses,$key);
7965: } elsif ($scope eq 'group') {
7966: push(@groups,$key);
7967: } elsif ($scope eq 'ip') {
7968: push(@ips,$key);
7969: }
7970: }
7971: if ($public) {
7972: return 'ok';
7973: } elsif (@ips > 0) {
7974: my $allowed;
7975: foreach my $ipkey (@ips) {
7976: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7977: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7978: $allowed = 1;
7979: last;
7980: }
7981: }
7982: }
7983: if ($allowed) {
7984: return 'ok';
7985: }
7986: }
7987: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7988: if ($guest) {
7989: return $guest;
7990: }
7991: } else {
7992: if (@domains > 0) {
7993: foreach my $domkey (@domains) {
7994: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7995: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7996: return 'ok';
7997: }
7998: }
7999: }
8000: }
8001: if (@users > 0) {
8002: foreach my $userkey (@users) {
8003: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
8004: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
8005: if (ref($item) eq 'HASH') {
8006: if (($item->{'uname'} eq $env{'user.name'}) &&
8007: ($item->{'udom'} eq $env{'user.domain'})) {
8008: return 'ok';
8009: }
8010: }
8011: }
8012: }
8013: }
8014: }
8015: my %roleshash;
8016: my @courses_and_groups = @courses;
8017: push(@courses_and_groups,@groups);
8018: if (@courses_and_groups > 0) {
8019: my (%allgroups,%allroles);
8020: my ($start,$end,$role,$sec,$group);
8021: foreach my $envkey (%env) {
8022: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
8023: my $cid = $2.'_'.$3;
8024: if ($1 eq 'gr') {
8025: $group = $4;
8026: $allgroups{$cid}{$group} = $env{$envkey};
8027: } else {
8028: if ($4 eq '') {
8029: $sec = 'none';
8030: } else {
8031: $sec = $4;
8032: }
8033: $allroles{$cid}{$1}{$sec} = $env{$envkey};
8034: }
8035: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
8036: my $cid = $2.'_'.$3;
8037: if ($4 eq '') {
8038: $sec = 'none';
8039: } else {
8040: $sec = $4;
8041: }
8042: $allroles{$cid}{$1}{$sec} = $env{$envkey};
8043: }
8044: }
8045: if (keys(%allroles) == 0) {
8046: return;
8047: }
8048: foreach my $key (@courses_and_groups) {
8049: my %content = %{$$access_hash{$key}};
8050: my $cnum = $content{'number'};
8051: my $cdom = $content{'domain'};
8052: my $cid = $cdom.'_'.$cnum;
8053: if (!exists($allroles{$cid})) {
8054: next;
8055: }
8056: foreach my $role_id (keys(%{$content{'roles'}})) {
8057: my @sections = @{$content{'roles'}{$role_id}{'section'}};
8058: my @groups = @{$content{'roles'}{$role_id}{'group'}};
8059: my @status = @{$content{'roles'}{$role_id}{'access'}};
8060: my @roles = @{$content{'roles'}{$role_id}{'role'}};
8061: foreach my $role (keys(%{$allroles{$cid}})) {
8062: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
8063: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
8064: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
8065: if (grep/^all$/,@sections) {
8066: return 'ok';
8067: } else {
8068: if (grep/^$sec$/,@sections) {
8069: return 'ok';
8070: }
8071: }
8072: }
8073: }
8074: if (keys(%{$allgroups{$cid}}) == 0) {
8075: if (grep/^none$/,@groups) {
8076: return 'ok';
8077: }
8078: } else {
8079: if (grep/^all$/,@groups) {
8080: return 'ok';
8081: }
8082: foreach my $group (keys(%{$allgroups{$cid}})) {
8083: if (grep/^$group$/,@groups) {
8084: return 'ok';
8085: }
8086: }
8087: }
8088: }
8089: }
8090: }
8091: }
8092: }
8093: if ($guest) {
8094: return $guest;
8095: }
8096: }
8097: }
8098: return;
8099: }
8100:
8101: sub course_group_datechecker {
8102: my ($dates,$now,$status) = @_;
8103: my ($start,$end) = split(/\./,$dates);
8104: if (!$start && !$end) {
8105: return 'ok';
8106: }
8107: if (grep/^active$/,@{$status}) {
8108: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
8109: return 'ok';
8110: }
8111: }
8112: if (grep/^previous$/,@{$status}) {
8113: if ($end > $now ) {
8114: return 'ok';
8115: }
8116: }
8117: if (grep/^future$/,@{$status}) {
8118: if ($start > $now) {
8119: return 'ok';
8120: }
8121: }
8122: return;
8123: }
8124:
8125: sub parse_portfolio_url {
8126: my ($url) = @_;
8127:
8128: my ($type,$udom,$unum,$group,$file_name);
8129:
8130: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
8131: $type = 1;
8132: $udom = $1;
8133: $unum = $2;
8134: $file_name = $3;
8135: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
8136: $type = 2;
8137: $udom = $1;
8138: $unum = $2;
8139: $group = $3;
8140: $file_name = $3.'/'.$4;
8141: }
8142: if (wantarray) {
8143: return ($type,$udom,$unum,$file_name,$group);
8144: }
8145: return $type;
8146: }
8147:
8148: sub is_portfolio_url {
8149: my ($url) = @_;
8150: return scalar(&parse_portfolio_url($url));
8151: }
8152:
8153: sub is_portfolio_file {
8154: my ($file) = @_;
8155: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
8156: return 1;
8157: }
8158: return;
8159: }
8160:
8161: sub is_coursetool_logo {
8162: my ($uri) = @_;
8163: if ($env{'request.course.id'}) {
8164: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
8165: if ($uri =~ m{^/*uploaded\Q$courseurl\E/toollogo/\d+/[^/]+$}) {
8166: return 1;
8167: }
8168: }
8169: return;
8170: }
8171:
8172: sub usertools_access {
8173: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
8174: my ($access,%tools);
8175: if ($context eq '') {
8176: $context = 'tools';
8177: }
8178: if ($context eq 'requestcourses') {
8179: %tools = (
8180: official => 1,
8181: unofficial => 1,
8182: community => 1,
8183: textbook => 1,
8184: placement => 1,
8185: lti => 1,
8186: );
8187: } elsif ($context eq 'requestauthor') {
8188: %tools = (
8189: requestauthor => 1,
8190: );
8191: } else {
8192: %tools = (
8193: aboutme => 1,
8194: blog => 1,
8195: webdav => 1,
8196: portfolio => 1,
8197: timezone => 1,
8198: );
8199: }
8200: return if (!defined($tools{$tool}));
8201:
8202: if (($udom eq '') || ($uname eq '')) {
8203: $udom = $env{'user.domain'};
8204: $uname = $env{'user.name'};
8205: }
8206:
8207: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8208: if ($action ne 'reload') {
8209: if ($context eq 'requestcourses') {
8210: return $env{'environment.canrequest.'.$tool};
8211: } elsif ($context eq 'requestauthor') {
8212: return $env{'environment.canrequest.author'};
8213: } else {
8214: return $env{'environment.availabletools.'.$tool};
8215: }
8216: }
8217: }
8218:
8219: my ($toolstatus,$inststatus,$envkey);
8220: if ($context eq 'requestauthor') {
8221: $envkey = $context;
8222: } else {
8223: $envkey = $context.'.'.$tool;
8224: }
8225:
8226: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8227: ($action ne 'reload')) {
8228: $toolstatus = $env{'environment.'.$envkey};
8229: $inststatus = $env{'environment.inststatus'};
8230: } else {
8231: if (ref($userenvref) eq 'HASH') {
8232: $toolstatus = $userenvref->{$envkey};
8233: $inststatus = $userenvref->{'inststatus'};
8234: } else {
8235: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
8236: $toolstatus = $userenv{$envkey};
8237: $inststatus = $userenv{'inststatus'};
8238: }
8239: }
8240:
8241: if ($toolstatus ne '') {
8242: if ($toolstatus) {
8243: $access = 1;
8244: } else {
8245: $access = 0;
8246: }
8247: return $access;
8248: }
8249:
8250: my ($is_adv,%domdef);
8251: if (ref($is_advref) eq 'HASH') {
8252: $is_adv = $is_advref->{'is_adv'};
8253: } else {
8254: $is_adv = &is_advanced_user($udom,$uname);
8255: }
8256: if (ref($domdefref) eq 'HASH') {
8257: %domdef = %{$domdefref};
8258: } else {
8259: %domdef = &get_domain_defaults($udom);
8260: }
8261: if (ref($domdef{$tool}) eq 'HASH') {
8262: if ($is_adv) {
8263: if ($domdef{$tool}{'_LC_adv'} ne '') {
8264: if ($domdef{$tool}{'_LC_adv'}) {
8265: $access = 1;
8266: } else {
8267: $access = 0;
8268: }
8269: return $access;
8270: }
8271: }
8272: if ($inststatus ne '') {
8273: my ($hasaccess,$hasnoaccess);
8274: foreach my $affiliation (split(/:/,$inststatus)) {
8275: if ($domdef{$tool}{$affiliation} ne '') {
8276: if ($domdef{$tool}{$affiliation}) {
8277: $hasaccess = 1;
8278: } else {
8279: $hasnoaccess = 1;
8280: }
8281: }
8282: }
8283: if ($hasaccess || $hasnoaccess) {
8284: if ($hasaccess) {
8285: $access = 1;
8286: } elsif ($hasnoaccess) {
8287: $access = 0;
8288: }
8289: return $access;
8290: }
8291: } else {
8292: if ($domdef{$tool}{'default'} ne '') {
8293: if ($domdef{$tool}{'default'}) {
8294: $access = 1;
8295: } elsif ($domdef{$tool}{'default'} == 0) {
8296: $access = 0;
8297: }
8298: return $access;
8299: }
8300: }
8301: } else {
8302: if (($context eq 'tools') && ($tool ne 'webdav')) {
8303: $access = 1;
8304: } else {
8305: $access = 0;
8306: }
8307: return $access;
8308: }
8309: }
8310:
8311: sub is_course_owner {
8312: my ($cdom,$cnum,$udom,$uname) = @_;
8313: if (($udom eq '') || ($uname eq '')) {
8314: $udom = $env{'user.domain'};
8315: $uname = $env{'user.name'};
8316: }
8317: unless (($udom eq '') || ($uname eq '')) {
8318: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
8319: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
8320: return 1;
8321: } else {
8322: my %courseinfo = &coursedescription($cdom.'/'.$cnum);
8323: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
8324: return 1;
8325: }
8326: }
8327: }
8328: }
8329: return;
8330: }
8331:
8332: sub is_advanced_user {
8333: my ($udom,$uname,$nocache) = @_;
8334: my ($is_adv,$is_author,$use_cache,$hashid);
8335: if ($udom ne '' && $uname ne '') {
8336: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8337: if (wantarray) {
8338: return ($env{'user.adv'},$env{'user.author'});
8339: } else {
8340: return $env{'user.adv'};
8341: }
8342: } elsif (!$nocache) {
8343: $use_cache = 1;
8344: $hashid = "$udom:$uname";
8345: my ($info,$cached)=&is_cached_new('isadvau',$hashid);
8346: if ($cached) {
8347: ($is_adv,$is_author) = split(/:/,$info);
8348: if (wantarray) {
8349: return ($is_adv,$is_author);
8350: }
8351: return $is_adv;
8352: }
8353: }
8354: }
8355: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
8356: my %allroles;
8357: foreach my $role (keys(%roleshash)) {
8358: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
8359: my $area = '/'.$tdomain.'/'.$trest;
8360: if ($sec ne '') {
8361: $area .= '/'.$sec;
8362: }
8363: if (($area ne '') && ($trole ne '')) {
8364: my $spec=$trole.'.'.$area;
8365: if ($trole =~ /^cr\//) {
8366: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
8367: } elsif ($trole ne 'gr') {
8368: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
8369: }
8370: if ($trole eq 'au') {
8371: $is_author = 1;
8372: }
8373: }
8374: }
8375: foreach my $role (keys(%allroles)) {
8376: last if ($is_adv);
8377: foreach my $item (split(/:/,$allroles{$role})) {
8378: if ($item ne '') {
8379: my ($privilege,$restrictions)=split(/&/,$item);
8380: if ($privilege eq 'adv') {
8381: $is_adv = 1;
8382: last;
8383: }
8384: }
8385: }
8386: }
8387: if ($use_cache) {
8388: my $cachetime = 600;
8389: &do_cache_new('isadvau',$hashid,$is_adv.':'.$is_author,$cachetime);
8390: }
8391: if (wantarray) {
8392: return ($is_adv,$is_author);
8393: }
8394: return $is_adv;
8395: }
8396:
8397: sub check_can_request {
8398: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
8399: my $canreq = 0;
8400: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8401: $uname = $env{'user.name'};
8402: $udom = $env{'user.domain'};
8403: }
8404: my ($types,$typename) = &Apache::loncommon::course_types();
8405: my @options = ('approval','validate','autolimit');
8406: my $optregex = join('|',@options);
8407: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
8408: my %willtrust;
8409: foreach my $type (@{$types}) {
8410: if (&usertools_access($uname,$udom,$type,undef,
8411: 'requestcourses')) {
8412: $canreq ++;
8413: if (ref($request_domains) eq 'HASH') {
8414: push(@{$request_domains->{$type}},$udom);
8415: }
8416: if ($dom eq $udom) {
8417: $can_request->{$type} = 1;
8418: }
8419: }
8420: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8421: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8422: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8423: if (@curr > 0) {
8424: foreach my $item (@curr) {
8425: if (ref($request_domains) eq 'HASH') {
8426: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8427: if ($otherdom ne '') {
8428: unless (exists($willtrust{$otherdom})) {
8429: $willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
8430: }
8431: if ($willtrust{$otherdom}) {
8432: if (ref($request_domains->{$type}) eq 'ARRAY') {
8433: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8434: push(@{$request_domains->{$type}},$otherdom);
8435: }
8436: } else {
8437: push(@{$request_domains->{$type}},$otherdom);
8438: }
8439: }
8440: }
8441: }
8442: }
8443: unless ($dom eq $env{'user.domain'}) {
8444: $canreq ++;
8445: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8446: $can_request->{$type} = 1;
8447: }
8448: }
8449: }
8450: }
8451: }
8452: }
8453: return $canreq;
8454: }
8455:
8456: # ---------------------------------------------- Custom access rule evaluation
8457:
8458: sub customaccess {
8459: my ($priv,$uri)=@_;
8460: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8461: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8462: $udom = &LONCAPA::clean_domain($udom);
8463: $ucrs = &LONCAPA::clean_username($ucrs);
8464: my $access=0;
8465: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8466: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8467: if ($type eq 'user') {
8468: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8469: my ($tdom,$tuname)=split(m{/},$scope);
8470: if ($tdom) {
8471: if ($tdom ne $env{'user.domain'}) { next; }
8472: }
8473: if ($tuname) {
8474: if ($tuname ne $env{'user.name'}) { next; }
8475: }
8476: $access=($effect eq 'allow');
8477: last;
8478: }
8479: } else {
8480: if ($role) {
8481: if ($role ne $urole) { next; }
8482: }
8483: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8484: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8485: if ($tdom) {
8486: if ($tdom ne $udom) { next; }
8487: }
8488: if ($tcrs) {
8489: if ($tcrs ne $ucrs) { next; }
8490: }
8491: if ($tsec) {
8492: if ($tsec ne $usec) { next; }
8493: }
8494: $access=($effect eq 'allow');
8495: last;
8496: }
8497: if ($realm eq '' && $role eq '') {
8498: $access=($effect eq 'allow');
8499: }
8500: }
8501: }
8502: return $access;
8503: }
8504:
8505: # ------------------------------------------------- Check for a user privilege
8506:
8507: sub allowed {
8508: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
8509: my $ver_orguri=$uri;
8510: $uri=&deversion($uri);
8511: my $orguri=$uri;
8512: $uri=&declutter($uri);
8513:
8514: if ($priv eq 'evb') {
8515: # Evade communication block restrictions for specified role in a course or domain
8516: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8517: return $1;
8518: } else {
8519: return;
8520: }
8521: }
8522:
8523: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8524: # Free bre access to adm and meta resources
8525: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8526: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8527: && ($priv eq 'bre')) {
8528: return 'F';
8529: }
8530:
8531: # Free bre access to user's own portfolio contents
8532: my ($space,$domain,$name,@dir)=split('/',$uri);
8533: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8534: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8535: my %setters;
8536: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
8537: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
8538: if (($startblock && $endblock) || ($by_ip)) {
8539: return 'B';
8540: } else {
8541: return 'F';
8542: }
8543: }
8544:
8545: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8546: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8547: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8548: if (exists($env{'request.course.id'})) {
8549: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8550: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8551: if (($domain eq $cdom) && ($name eq $cnum)) {
8552: my $courseprivid=$env{'request.course.id'};
8553: $courseprivid=~s/\_/\//;
8554: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8555: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8556: return $1;
8557: } else {
8558: if ($env{'request.course.sec'}) {
8559: $courseprivid.='/'.$env{'request.course.sec'};
8560: }
8561: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8562: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8563: return $2;
8564: }
8565: }
8566: }
8567: }
8568: }
8569:
8570: # Free bre to public access
8571:
8572: if ($priv eq 'bre') {
8573: my $copyright;
8574: unless ($uri =~ /ext\.tool/) {
8575: $copyright=&metadata($uri,'copyright');
8576: }
8577: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8578: return 'F';
8579: }
8580: if ($copyright eq 'priv') {
8581: $uri=~/([^\/]+)\/([^\/]+)\//;
8582: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8583: return '';
8584: }
8585: }
8586: if ($copyright eq 'domain') {
8587: $uri=~/([^\/]+)\/([^\/]+)\//;
8588: unless (($env{'user.domain'} eq $1) ||
8589: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8590: return '';
8591: }
8592: }
8593: if ($env{'request.role'}=~ /li\.\//) {
8594: # Library role, so allow browsing of resources in this domain.
8595: return 'F';
8596: }
8597: if ($copyright eq 'custom') {
8598: unless (&customaccess($priv,$uri)) { return ''; }
8599: }
8600: }
8601: # Domain coordinator is trying to create a course
8602: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8603: # uri is the requested domain in this case.
8604: # comparison to 'request.role.domain' shows if the user has selected
8605: # a role of dc for the domain in question.
8606: return 'F' if ($uri eq $env{'request.role.domain'});
8607: }
8608:
8609: my $thisallowed='';
8610: my $statecond=0;
8611: my $courseprivid='';
8612:
8613: my $ownaccess;
8614: # Community Coordinator or Assistant Co-author browsing resource space.
8615: if (($priv eq 'bro') && ($env{'user.author'})) {
8616: if ($uri eq '') {
8617: $ownaccess = 1;
8618: } else {
8619: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8620: my $udom = $env{'user.domain'};
8621: my $uname = $env{'user.name'};
8622: if ($uri =~ m{^\Q$udom\E/?$}) {
8623: $ownaccess = 1;
8624: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8625: unless ($uri =~ m{\.\./}) {
8626: $ownaccess = 1;
8627: }
8628: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8629: my $now = time;
8630: if ($uri =~ m{^([^/]+)/?$}) {
8631: my $adom = $1;
8632: foreach my $key (keys(%env)) {
8633: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8634: my ($start,$end) = split(/\./,$env{$key});
8635: if (($now >= $start) && (!$end || $end > $now)) {
8636: $ownaccess = 1;
8637: last;
8638: }
8639: }
8640: }
8641: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8642: my $adom = $1;
8643: my $aname = $2;
8644: foreach my $role ('ca','aa') {
8645: if ($env{"user.role.$role./$adom/$aname"}) {
8646: my ($start,$end) =
8647: split(/\./,$env{"user.role.$role./$adom/$aname"});
8648: if (($now >= $start) && (!$end || $end > $now)) {
8649: $ownaccess = 1;
8650: last;
8651: }
8652: }
8653: }
8654: }
8655: }
8656: }
8657: }
8658: }
8659:
8660: # Course
8661:
8662: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8663: unless (($priv eq 'bro') && (!$ownaccess)) {
8664: $thisallowed.=$1;
8665: }
8666: }
8667:
8668: # Domain
8669:
8670: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8671: =~/\Q$priv\E\&([^\:]*)/) {
8672: unless (($priv eq 'bro') && (!$ownaccess)) {
8673: $thisallowed.=$1;
8674: }
8675: }
8676:
8677: # User who is not author or co-author might still be able to edit
8678: # resource of an author in the domain (e.g., if Domain Coordinator).
8679: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8680: (&allowed('mdc',$env{'request.course.id'}))) {
8681: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8682: $thisallowed.=$1;
8683: }
8684: }
8685:
8686: # Course: uri itself is a course
8687: my $courseuri=$uri;
8688: $courseuri=~s/\_(\d)/\/$1/;
8689: $courseuri=~s/^([^\/])/\/$1/;
8690:
8691: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8692: =~/\Q$priv\E\&([^\:]*)/) {
8693: if ($priv eq 'mip') {
8694: my $rem = $1;
8695: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8696: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8697: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8698: if ($cdom ne '') {
8699: my %passwdconf = &get_passwdconf($cdom);
8700: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8701: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8702: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8703: my @inststatuses = split(':',$env{'environment.inststatus'});
8704: unless (@inststatuses) {
8705: @inststatuses = ('default');
8706: }
8707: foreach my $status (@inststatuses) {
8708: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8709: $thisallowed.=$rem;
8710: }
8711: }
8712: }
8713: }
8714: }
8715: }
8716: }
8717: } else {
8718: unless (($priv eq 'bro') && (!$ownaccess)) {
8719: $thisallowed.=$1;
8720: }
8721: }
8722: }
8723:
8724: # URI is an uploaded document for this course, default permissions don't matter
8725: # not allowing 'edit' access (editupload) to uploaded course docs
8726: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8727: $thisallowed='';
8728: my ($match)=&is_on_map($uri);
8729: if ($match) {
8730: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8731: =~/\Q$priv\E\&([^\:]*)/) {
8732: my $value = $1;
8733: my $deeplinkblock;
8734: unless ($nodeeplinkcheck) {
8735: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8736: }
8737: if ($deeplinkblock) {
8738: $thisallowed='D';
8739: } elsif ($noblockcheck) {
8740: $thisallowed.=$value;
8741: } else {
8742: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8743: if (@blockers > 0) {
8744: $thisallowed = 'B';
8745: } else {
8746: $thisallowed.=$value;
8747: }
8748: }
8749: }
8750: } else {
8751: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8752: if ($refuri) {
8753: if ($refuri =~ m|^/adm/|) {
8754: $thisallowed='F';
8755: } else {
8756: $refuri=&declutter($refuri);
8757: my ($match) = &is_on_map($refuri);
8758: if ($match) {
8759: my $deeplinkblock;
8760: unless ($nodeeplinkcheck) {
8761: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8762: }
8763: if ($deeplinkblock) {
8764: $thisallowed='D';
8765: } elsif ($noblockcheck) {
8766: $thisallowed='F';
8767: } else {
8768: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8769: if (@blockers > 0) {
8770: $thisallowed = 'B';
8771: } else {
8772: $thisallowed='F';
8773: }
8774: }
8775: }
8776: }
8777: }
8778: }
8779: }
8780:
8781: if ($priv eq 'bre'
8782: && $thisallowed ne 'F'
8783: && $thisallowed ne '2'
8784: && &is_portfolio_url($uri)) {
8785: $thisallowed = &portfolio_access($uri,$clientip);
8786: }
8787:
8788: # Full access at system, domain or course-wide level? Exit.
8789: if ($thisallowed=~/F/) {
8790: return 'F';
8791: }
8792:
8793: # If this is generating or modifying users, exit with special codes
8794:
8795: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8796: if (($priv eq 'cca') || ($priv eq 'caa')) {
8797: my ($audom,$auname)=split('/',$uri);
8798: # no author name given, so this just checks on the general right to make a co-author in this domain
8799: unless ($auname) { return $thisallowed; }
8800: # an author name is given, so we are about to actually make a co-author for a certain account
8801: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8802: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8803: ($audom ne $env{'request.role.domain'}))) { return ''; }
8804: }
8805: return $thisallowed;
8806: }
8807: #
8808: # Gathered so far: system, domain and course wide privileges
8809: #
8810: # Course: See if uri or referer is an individual resource that is part of
8811: # the course
8812:
8813: if ($env{'request.course.id'}) {
8814:
8815: if ($priv eq 'bre') {
8816: if (&is_coursetool_logo($uri)) {
8817: return 'F';
8818: }
8819: }
8820:
8821: # If this is modifying password (internal auth) domains must match for user and user's role.
8822:
8823: if ($priv eq 'mip') {
8824: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8825: return $thisallowed;
8826: } else {
8827: return '';
8828: }
8829: }
8830:
8831: $courseprivid=$env{'request.course.id'};
8832: if ($env{'request.course.sec'}) {
8833: $courseprivid.='/'.$env{'request.course.sec'};
8834: }
8835: $courseprivid=~s/\_/\//;
8836: my $checkreferer=1;
8837: my ($match,$cond)=&is_on_map($uri);
8838: if ($match) {
8839: $statecond=$cond;
8840: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8841: =~/\Q$priv\E\&([^\:]*)/) {
8842: my $value = $1;
8843: if ($priv eq 'bre') {
8844: my $deeplinkblock;
8845: unless ($nodeeplinkcheck) {
8846: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8847: }
8848: if ($deeplinkblock) {
8849: $thisallowed = 'D';
8850: } elsif ($noblockcheck) {
8851: $thisallowed.=$value;
8852: } else {
8853: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8854: if (@blockers > 0) {
8855: $thisallowed = 'B';
8856: } else {
8857: $thisallowed.=$value;
8858: }
8859: }
8860: } else {
8861: $thisallowed.=$value;
8862: }
8863: $checkreferer=0;
8864: }
8865: }
8866:
8867: if ($checkreferer) {
8868: my $refuri=$env{'httpref.'.$orguri};
8869: unless ($refuri) {
8870: foreach my $key (keys(%env)) {
8871: if ($key=~/^httpref\..*\*/) {
8872: my $pattern=$key;
8873: $pattern=~s/^httpref\.\/res\///;
8874: $pattern=~s/\*/\[\^\/\]\+/g;
8875: $pattern=~s/\//\\\//g;
8876: if ($orguri=~/$pattern/) {
8877: $refuri=$env{$key};
8878: }
8879: }
8880: }
8881: }
8882:
8883: if ($refuri) {
8884: $refuri=&declutter($refuri);
8885: my ($match,$cond)=&is_on_map($refuri);
8886: if ($match) {
8887: my $refstatecond=$cond;
8888: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8889: =~/\Q$priv\E\&([^\:]*)/) {
8890: my $value = $1;
8891: if ($priv eq 'bre') {
8892: my $deeplinkblock;
8893: unless ($nodeeplinkcheck) {
8894: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8895: }
8896: if ($deeplinkblock) {
8897: $thisallowed = 'D';
8898: } elsif ($noblockcheck) {
8899: $thisallowed.=$value;
8900: } else {
8901: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8902: if (@blockers > 0) {
8903: $thisallowed = 'B';
8904: } else {
8905: $thisallowed.=$value;
8906: }
8907: }
8908: } else {
8909: $thisallowed.=$value;
8910: }
8911: $uri=$refuri;
8912: $statecond=$refstatecond;
8913: }
8914: }
8915: }
8916: }
8917: }
8918:
8919: #
8920: # Gathered now: all privileges that could apply, and condition number
8921: #
8922: #
8923: # Full or no access?
8924: #
8925:
8926: if ($thisallowed=~/F/) {
8927: return 'F';
8928: }
8929:
8930: unless ($thisallowed) {
8931: return '';
8932: }
8933:
8934: # Restrictions exist, deal with them
8935: #
8936: # C:according to course preferences
8937: # R:according to resource settings
8938: # L:unless locked
8939: # X:according to user session state
8940: #
8941:
8942: # Possibly locked functionality, check all courses
8943: # In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
8944: # Locks might take effect only after 10 minutes cache expiration for other
8945: # courses, and 2 minutes for current course, in which user has st or ta role
8946: # which is neither expired nor a future role (unless current course).
8947:
8948: my ($needlockcheck,$now,$crsonly);
8949: if ($thisallowed=~/L/) {
8950: $now = time;
8951: if ($priv eq 'bre') {
8952: if ($uri ne '') {
8953: if ($orguri =~ m{^/+res/}) {
8954: if ($uri =~ m{^lib/templates/}) {
8955: if ($env{'request.course.id'}) {
8956: $crsonly = 1;
8957: $needlockcheck = 1;
8958: }
8959: } else {
8960: $needlockcheck = 1;
8961: }
8962: } elsif ($env{'request.course.id'}) {
8963: my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
8964: if (($uri =~ m{^(adm|uploaded|public)/$crsdom/$crsnum/}) ||
8965: ($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg|bulletinboard)$})) {
8966: $crsonly = 1;
8967: }
8968: $needlockcheck = 1;
8969: }
8970: }
8971: } elsif (($priv eq 'pch') || ($priv eq 'plc') || ($priv eq 'pac') || ($priv eq 'sma')) {
8972: $needlockcheck = 1;
8973: }
8974: }
8975: if ($needlockcheck) {
8976: foreach my $envkey (keys(%env)) {
8977: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8978: my $courseid=$2;
8979: my $roleid=$1.'.'.$2;
8980: $courseid=~s/^\///;
8981: unless ($env{'request.role'} eq $roleid) {
8982: my ($start,$end) = split(/\./,$env{$envkey});
8983: next unless (($now >= $start) && (!$end || $end > $now));
8984: }
8985: my $expiretime=600;
8986: if ($env{'request.role'} eq $roleid) {
8987: $expiretime=120;
8988: }
8989: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8990: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8991: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8992: &coursedescription($courseid,{'freshen_cache' => 1});
8993: }
8994: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8995: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8996: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8997: &log($env{'user.domain'},$env{'user.name'},
8998: $env{'user.home'},
8999: 'Locked by res: '.$priv.' for '.$uri.' due to '.
9000: $cdom.'/'.$cnum.'/'.$csec.' expire '.
9001: $env{$prefix.'priv.'.$priv.'.lock.expire'});
9002: return '';
9003: }
9004: }
9005: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
9006: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
9007: if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
9008: &log($env{'user.domain'},$env{'user.name'},
9009: $env{'user.home'},
9010: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
9011: $cdom.'/'.$cnum.'/'.$csec.' expire '.
9012: $env{$prefix.'priv.'.$priv.'.lock.expire'});
9013: return '';
9014: }
9015: }
9016: }
9017: }
9018: }
9019:
9020: #
9021: # Rest of the restrictions depend on selected course
9022: #
9023:
9024: unless ($env{'request.course.id'}) {
9025: if ($thisallowed eq 'A') {
9026: return 'A';
9027: } elsif ($thisallowed eq 'B') {
9028: return 'B';
9029: } else {
9030: return '1';
9031: }
9032: }
9033:
9034: #
9035: # Now user is definitely in a course
9036: #
9037:
9038:
9039: # Course preferences
9040:
9041: if ($thisallowed=~/C/) {
9042: my $rolecode=(split(/\./,$env{'request.role'}))[0];
9043: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
9044: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
9045: =~/\Q$rolecode\E/) {
9046: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
9047: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
9048: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
9049: $env{'request.course.id'});
9050: }
9051: return '';
9052: }
9053:
9054: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
9055: =~/\Q$unamedom\E/) {
9056: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
9057: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
9058: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
9059: $env{'request.course.id'});
9060: }
9061: return '';
9062: }
9063: }
9064:
9065: # Resource preferences
9066:
9067: if ($thisallowed=~/R/) {
9068: my $rolecode=(split(/\./,$env{'request.role'}))[0];
9069: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
9070: if (($priv ne 'pch') && ($priv ne 'plc')) {
9071: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
9072: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
9073: }
9074: return '';
9075: }
9076: }
9077:
9078: # Restricted for deeplinked session?
9079:
9080: if ($env{'request.deeplink.login'}) {
9081: if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
9082: if (!$symb) { $symb=&symbread($uri,1); }
9083: if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
9084: return '';
9085: }
9086: }
9087: }
9088:
9089: # Restricted by state or randomout?
9090:
9091: if ($thisallowed=~/X/) {
9092: if ($env{'acc.randomout'}) {
9093: if (!$symb) { $symb=&symbread($uri,1); }
9094: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
9095: return '';
9096: }
9097: }
9098: if (&condval($statecond)) {
9099: return '2';
9100: } else {
9101: return '';
9102: }
9103: }
9104:
9105: if ($thisallowed eq 'A') {
9106: return 'A';
9107: } elsif ($thisallowed eq 'B') {
9108: return 'B';
9109: } elsif ($thisallowed eq 'D') {
9110: return 'D';
9111: }
9112: return 'F';
9113: }
9114:
9115: # ------------------------------------------- Check construction space access
9116:
9117: sub constructaccess {
9118: my ($url,$setpriv)=@_;
9119:
9120: # We do not allow editing of previous versions of files
9121: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
9122:
9123: # Get username and domain from URL
9124: my ($ownername,$ownerdomain,$ownerhome);
9125:
9126: ($ownerdomain,$ownername) =
9127: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
9128:
9129: # The URL does not really point to any authorspace, forget it
9130: unless (($ownername) && ($ownerdomain)) { return ''; }
9131:
9132: # Now we need to see if the user has access to the authorspace of
9133: # $ownername at $ownerdomain
9134:
9135: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
9136: # Real author for this?
9137: $ownerhome = $env{'user.home'};
9138: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
9139: return ($ownername,$ownerdomain,$ownerhome);
9140: }
9141: } elsif (&is_course($ownerdomain,$ownername)) {
9142: # Course Authoring Space?
9143: if ($env{'request.course.id'}) {
9144: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
9145: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
9146: if (&allowed('mdc',$env{'request.course.id'})) {
9147: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
9148: return ($ownername,$ownerdomain,$ownerhome);
9149: }
9150: }
9151: }
9152: return '';
9153: } else {
9154: # Co-author for this?
9155: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
9156: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
9157: $ownerhome = &homeserver($ownername,$ownerdomain);
9158: return ($ownername,$ownerdomain,$ownerhome);
9159: }
9160: }
9161:
9162: # We don't have any access right now. If we are not possibly going to do anything about this,
9163: # we might as well leave
9164: unless ($setpriv) { return ''; }
9165:
9166: # Backdoor access?
9167: my $allowed=&allowed('eco',$ownerdomain);
9168: # Nope
9169: unless ($allowed) { return ''; }
9170: # Looks like we may have access, but could be locked by the owner of the construction space
9171: if ($allowed eq 'U') {
9172: my %blocked=&get('environment',['domcoord.author'],
9173: $ownerdomain,$ownername);
9174: # Is blocked by owner
9175: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
9176: }
9177: if (($allowed eq 'F') || ($allowed eq 'U')) {
9178: # Grant temporary access
9179: my $then=$env{'user.login.time'};
9180: my $update=$env{'user.update.time'};
9181: if (!$update) { $update = $then; }
9182: my $refresh=$env{'user.refresh.time'};
9183: if (!$refresh) { $refresh = $update; }
9184: my $now = time;
9185: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
9186: $now,'ca','constructaccess');
9187: $ownerhome = &homeserver($ownername,$ownerdomain);
9188: return($ownername,$ownerdomain,$ownerhome);
9189: }
9190: # No business here
9191: return '';
9192: }
9193:
9194: # ----------------------------------------------------------- Content Blocking
9195:
9196: {
9197: # Caches for faster Course Contents display where content blocking
9198: # is in operation (i.e., interval param set) for timed quiz.
9199: #
9200: # User for whom data are being temporarily cached.
9201: my $cacheduser='';
9202: # Course for which data are being temporarily cached.
9203: my $cachedcid='';
9204: # Cached blockers for this user (a hash of blocking items).
9205: my %cachedblockers=();
9206: # When the data were last cached.
9207: my $cachedlast='';
9208:
9209: sub load_all_blockers {
9210: my ($uname,$udom)=@_;
9211: if (($uname ne '') && ($udom ne '')) {
9212: if (($cacheduser eq $uname.':'.$udom) &&
9213: ($cachedcid eq $env{'request.course.id'}) &&
9214: (abs($cachedlast-time)<5)) {
9215: return;
9216: }
9217: }
9218: $cachedlast=time;
9219: $cacheduser=$uname.':'.$udom;
9220: $cachedcid=$env{'request.course.id'};
9221: %cachedblockers = &get_commblock_resources();
9222: return;
9223: }
9224:
9225: sub get_comm_blocks {
9226: my ($cdom,$cnum) = @_;
9227: if ($cdom eq '' || $cnum eq '') {
9228: return unless ($env{'request.course.id'});
9229: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9230: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9231: }
9232: my %commblocks;
9233: my $hashid=$cdom.'_'.$cnum;
9234: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
9235: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
9236: %commblocks = %{$blocksref};
9237: } else {
9238: %commblocks = &dump('comm_block',$cdom,$cnum);
9239: my $cachetime = 600;
9240: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
9241: }
9242: return %commblocks;
9243: }
9244:
9245: sub get_commblock_resources {
9246: my ($blocks) = @_;
9247: my %blockers = ();
9248: return %blockers unless ($env{'request.course.id'});
9249: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9250: if ($env{'request.course.sec'}) {
9251: $courseurl .= '/'.$env{'request.course.sec'};
9252: }
9253: return %blockers if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9254: my %commblocks;
9255: if (ref($blocks) eq 'HASH') {
9256: %commblocks = %{$blocks};
9257: } else {
9258: %commblocks = &get_comm_blocks();
9259: }
9260: return %blockers unless (keys(%commblocks) > 0);
9261: my $navmap = Apache::lonnavmaps::navmap->new();
9262: return %blockers unless (ref($navmap));
9263: my $now = time;
9264: foreach my $block (keys(%commblocks)) {
9265: if ($block =~ /^(\d+)____(\d+)$/) {
9266: my ($start,$end) = ($1,$2);
9267: if ($start <= $now && $end >= $now) {
9268: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9269: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9270: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9271: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9272: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9273: }
9274: }
9275: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9276: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9277: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9278: }
9279: }
9280: }
9281: }
9282: }
9283: } elsif ($block =~ /^firstaccess____(.+)$/) {
9284: my $item = $1;
9285: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9286: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9287: my (@interval,$mapname);
9288: my $type = 'map';
9289: if ($item eq 'course') {
9290: $type = 'course';
9291: @interval=&EXT("resource.0.interval");
9292: } else {
9293: if ($item =~ /___\d+___/) {
9294: $type = 'resource';
9295: @interval=&EXT("resource.0.interval",$item);
9296: } else {
9297: $mapname = &deversion($item);
9298: if (ref($navmap)) {
9299: my $timelimit = $navmap->get_mapparam(undef,$mapname,'0.interval');
9300: @interval = ($timelimit,'map');
9301: }
9302: }
9303: }
9304: if ($interval[0] =~ /^(\d+)/) {
9305: my $timelimit = $1;
9306: my $first_access;
9307: if ($type eq 'resource') {
9308: $first_access=&get_first_access($interval[1],$item);
9309: } elsif ($type eq 'map') {
9310: $first_access=&get_first_access($interval[1],undef,$item);
9311: } else {
9312: $first_access=&get_first_access($interval[1]);
9313: }
9314: if ($first_access) {
9315: my $timesup = $first_access+$timelimit;
9316: if ($timesup > $now) {
9317: my $activeblock;
9318: if ($type eq 'resource') {
9319: if (ref($navmap)) {
9320: my $res = $navmap->getBySymb($item);
9321: if ($res->answerable()) {
9322: $activeblock = 1;
9323: }
9324: }
9325: } elsif ($type eq 'map') {
9326: my $mapsymb = &symbread($mapname,1);
9327: if (($mapsymb) && (ref($navmap))) {
9328: my $mapres = $navmap->getBySymb($mapsymb);
9329: if (ref($mapres)) {
9330: my $first = $mapres->map_start();
9331: my $finish = $mapres->map_finish();
9332: my $it = $navmap->getIterator($first,$finish,undef,0,0);
9333: if (ref($it)) {
9334: my $res;
9335: while ($res = $it->next(undef,1)) {
9336: next unless (ref($res));
9337: my $symb = $res->symb();
9338: next if (($symb eq $mapsymb) || ($symb eq ''));
9339: @interval=&EXT("resource.0.interval",$symb);
9340: if ($interval[1] eq 'map') {
9341: if ($res->answerable()) {
9342: $activeblock = 1;
9343: last;
9344: }
9345: }
9346: }
9347: }
9348: }
9349: }
9350: }
9351: if ($activeblock) {
9352: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9353: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9354: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9355: }
9356: }
9357: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9358: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9359: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9360: }
9361: }
9362: }
9363: }
9364: }
9365: }
9366: }
9367: }
9368: }
9369: }
9370: return %blockers;
9371: }
9372:
9373: sub has_comm_blocking {
9374: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
9375: my @blockers;
9376: return unless ($env{'request.course.id'});
9377: return unless ($priv eq 'bre');
9378: return if ($env{'request.state'} eq 'construct');
9379: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9380: if ($env{'request.course.sec'}) {
9381: $courseurl .= '/'.$env{'request.course.sec'};
9382: }
9383: return if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9384: my %blockinfo;
9385: if (ref($blocks) eq 'HASH') {
9386: %blockinfo = &get_commblock_resources($blocks);
9387: } else {
9388: &load_all_blockers($env{'user.name'},$env{'user.domain'});
9389: %blockinfo = %cachedblockers;
9390: }
9391: return unless (keys(%blockinfo) > 0);
9392: my (%possibles,@symbs);
9393: if (!$symb) {
9394: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
9395: }
9396: if ($symb) {
9397: @symbs = ($symb);
9398: } elsif (keys(%possibles)) {
9399: @symbs = keys(%possibles);
9400: }
9401: my $noblock;
9402: foreach my $symb (@symbs) {
9403: last if ($noblock);
9404: my ($map,$resid,$resurl)=&decode_symb($symb);
9405: foreach my $block (keys(%blockinfo)) {
9406: if ($block =~ /^firstaccess____(.+)$/) {
9407: my $item = $1;
9408: unless ($blocked) {
9409: if (($item eq $map) || ($item eq $symb)) {
9410: $noblock = 1;
9411: last;
9412: }
9413: }
9414: }
9415: if (ref($blockinfo{$block}) eq 'HASH') {
9416: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
9417: if ($blockinfo{$block}{'resources'}{$symb}) {
9418: unless (grep(/^\Q$block\E$/,@blockers)) {
9419: push(@blockers,$block);
9420: }
9421: }
9422: }
9423: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
9424: if ($blockinfo{$block}{'maps'}{$map}) {
9425: unless (grep(/^\Q$block\E$/,@blockers)) {
9426: push(@blockers,$block);
9427: }
9428: }
9429: }
9430: }
9431: }
9432: }
9433: unless ($noblock) {
9434: return @blockers;
9435: }
9436: return;
9437: }
9438: }
9439:
9440: sub deeplink_check {
9441: my ($priv,$symb,$uri) = @_;
9442: return unless ($env{'request.course.id'});
9443: return unless ($priv eq 'bre');
9444: return if ($env{'request.state'} eq 'construct');
9445: return if ($env{'request.role.adv'});
9446: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9447: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9448: my (%possibles,@symbs);
9449: if (!$symb) {
9450: $symb = &symbread($uri,1,1,1,\%possibles);
9451: }
9452: if ($symb) {
9453: @symbs = ($symb);
9454: } elsif (keys(%possibles)) {
9455: @symbs = keys(%possibles);
9456: }
9457:
9458: my ($deeplink_symb,$allow);
9459: if ($env{'request.deeplink.login'}) {
9460: $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
9461: }
9462: foreach my $symb (@symbs) {
9463: last if ($allow);
9464: my $deeplink = &EXT("resource.0.deeplink",$symb);
9465: if ($deeplink eq '') {
9466: $allow = 1;
9467: } else {
9468: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
9469: if ($state ne 'only') {
9470: $allow = 1;
9471: } else {
9472: my $check_deeplink_entry;
9473: if ($protect ne 'none') {
9474: my ($acctype,$item) = split(/:/,$protect);
9475: if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
9476: if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
9477: $check_deeplink_entry = 1
9478: }
9479: } elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
9480: if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
9481: $check_deeplink_entry = 1;
9482: }
9483: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9484: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9485: $check_deeplink_entry = 1;
9486: }
9487: }
9488: }
9489: if (($protect eq 'none') || ($check_deeplink_entry)) {
9490: if ($scope eq 'res') {
9491: if ($symb eq $deeplink_symb) {
9492: $allow = 1;
9493: }
9494: } elsif (($scope eq 'map') || ($scope eq 'rec')) {
9495: my ($map_from_symb,$map_from_login);
9496: $map_from_symb = &deversion((&decode_symb($symb))[0]);
9497: if ($deeplink_symb =~ /\.(page|sequence)$/) {
9498: $map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
9499: } else {
9500: $map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
9501: }
9502: if (($map_from_symb) && ($map_from_login)) {
9503: if ($map_from_symb eq $map_from_login) {
9504: $allow = 1;
9505: } elsif ($scope eq 'rec') {
9506: my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
9507: if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
9508: $allow = 1;
9509: }
9510: }
9511: }
9512: }
9513: }
9514: }
9515: }
9516: }
9517: return if ($allow);
9518: return 1;
9519: }
9520:
9521: # -------------------------------- Deversion and split uri into path an filename
9522:
9523: #
9524: # Removes the version from a URI and
9525: # splits it in to its filename and path to the filename.
9526: # Seems like File::Basename could have done this more clearly.
9527: # Parameters:
9528: # $uri - input URI
9529: # Returns:
9530: # Two element list consisting of
9531: # $pathname - the URI up to and excluding the trailing /
9532: # $filename - The part of the URI following the last /
9533: # NOTE:
9534: # Another realization of this is simply:
9535: # use File::Basename;
9536: # ...
9537: # $uri = shift;
9538: # $filename = basename($uri);
9539: # $path = dirname($uri);
9540: # return ($filename, $path);
9541: #
9542: # The implementation below is probably faster however.
9543: #
9544: sub split_uri_for_cond {
9545: my $uri=&deversion(&declutter(shift));
9546: my @uriparts=split(/\//,$uri);
9547: my $filename=pop(@uriparts);
9548: my $pathname=join('/',@uriparts);
9549: return ($pathname,$filename);
9550: }
9551: # --------------------------------------------------- Is a resource on the map?
9552:
9553: sub is_on_map {
9554: my ($pathname,$filename) = &split_uri_for_cond(shift);
9555: #Trying to find the conditional for the file
9556: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9557: /\&\Q$filename\E\:([\d\|]+)\&/);
9558: if ($match) {
9559: return (1,$1);
9560: } else {
9561: return (0,0);
9562: }
9563: }
9564:
9565: # --------------------------------------------------------- Get symb from alias
9566:
9567: sub get_symb_from_alias {
9568: my $symb=shift;
9569: my ($map,$resid,$url)=&decode_symb($symb);
9570: # Already is a symb
9571: if ($url) { return $symb; }
9572: # Must be an alias
9573: my $aliassymb='';
9574: my %bighash;
9575: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9576: &GDBM_READER(),0640)) {
9577: my $rid=$bighash{'mapalias_'.$symb};
9578: if ($rid) {
9579: my ($mapid,$resid)=split(/\./,$rid);
9580: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9581: $resid,$bighash{'src_'.$rid});
9582: }
9583: untie %bighash;
9584: }
9585: return $aliassymb;
9586: }
9587:
9588: # ----------------------------------------------------------------- Define Role
9589:
9590: sub definerole {
9591: if (allowed('mcr','/')) {
9592: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9593: foreach my $role (split(':',$sysrole)) {
9594: my ($crole,$cqual)=split(/\&/,$role);
9595: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9596: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9597: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9598: return "refused:s:$crole&$cqual";
9599: }
9600: }
9601: }
9602: foreach my $role (split(':',$domrole)) {
9603: my ($crole,$cqual)=split(/\&/,$role);
9604: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9605: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9606: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9607: return "refused:d:$crole&$cqual";
9608: }
9609: }
9610: }
9611: foreach my $role (split(':',$courole)) {
9612: my ($crole,$cqual)=split(/\&/,$role);
9613: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9614: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9615: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9616: return "refused:c:$crole&$cqual";
9617: }
9618: }
9619: }
9620: my $uhome;
9621: if (($uname ne '') && ($udom ne '')) {
9622: $uhome = &homeserver($uname,$udom);
9623: return $uhome if ($uhome eq 'no_host');
9624: } else {
9625: $uname = $env{'user.name'};
9626: $udom = $env{'user.domain'};
9627: $uhome = $env{'user.home'};
9628: }
9629: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9630: "$udom:$uname:rolesdef_$rolename=".
9631: escape($sysrole.'_'.$domrole.'_'.$courole);
9632: return reply($command,$uhome);
9633: } else {
9634: return 'refused';
9635: }
9636: }
9637:
9638: # ---------------- Make a metadata query against the network of library servers
9639:
9640: sub metadata_query {
9641: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9642: my %rhash;
9643: my %libserv = &all_library();
9644: my @server_list = (defined($server_array) ? @$server_array
9645: : keys(%libserv) );
9646: for my $server (@server_list) {
9647: my $domains = '';
9648: if (ref($domains_hash) eq 'HASH') {
9649: $domains = $domains_hash->{$server};
9650: }
9651: unless ($custom or $customshow) {
9652: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9653: $rhash{$server}=$reply;
9654: }
9655: else {
9656: my $reply=&reply("querysend:".&escape($query).':'.
9657: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9658: $server);
9659: $rhash{$server}=$reply;
9660: }
9661: }
9662: return \%rhash;
9663: }
9664:
9665: # ----------------------------------------- Send log queries and wait for reply
9666:
9667: sub log_query {
9668: my ($uname,$udom,$query,%filters)=@_;
9669: my $uhome=&homeserver($uname,$udom);
9670: if ($uhome eq 'no_host') { return 'error: no_host'; }
9671: my $uhost=&hostname($uhome);
9672: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9673: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9674: $uhome);
9675: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9676: return get_query_reply($queryid);
9677: }
9678:
9679: # -------------------------- Update MySQL table for portfolio file
9680:
9681: sub update_portfolio_table {
9682: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9683: if ($group ne '') {
9684: $file_name =~s /^\Q$group\E//;
9685: }
9686: my $homeserver = &homeserver($uname,$udom);
9687: my $queryid=
9688: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9689: ':'.&escape($file_name).':'.$action,$homeserver);
9690: my $reply = &get_query_reply($queryid);
9691: return $reply;
9692: }
9693:
9694: # -------------------------- Update MySQL allusers table
9695:
9696: sub update_allusers_table {
9697: my ($uname,$udom,$names) = @_;
9698: my $homeserver = &homeserver($uname,$udom);
9699: my $queryid=
9700: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9701: 'lastname='.&escape($names->{'lastname'}).'%%'.
9702: 'firstname='.&escape($names->{'firstname'}).'%%'.
9703: 'middlename='.&escape($names->{'middlename'}).'%%'.
9704: 'generation='.&escape($names->{'generation'}).'%%'.
9705: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9706: 'id='.&escape($names->{'id'}),$homeserver);
9707: return;
9708: }
9709:
9710: # ------- Request retrieval of institutional classlists for course(s)
9711:
9712: sub fetch_enrollment_query {
9713: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9714: my ($homeserver,$sleep,$loopmax);
9715: my $maxtries = 1;
9716: if ($context eq 'automated') {
9717: $homeserver = $perlvar{'lonHostID'};
9718: $sleep = 2;
9719: $loopmax = 100;
9720: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9721: } else {
9722: $homeserver = &homeserver($cnum,$dom);
9723: }
9724: my $host=&hostname($homeserver);
9725: my $cmd = '';
9726: foreach my $affiliate (keys(%{$affiliatesref})) {
9727: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9728: }
9729: $cmd =~ s/%%$//;
9730: $cmd = &escape($cmd);
9731: my $query = 'fetchenrollment';
9732: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9733: unless ($queryid=~/^\Q$host\E\_/) {
9734: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9735: return 'error: '.$queryid;
9736: }
9737: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9738: my $tries = 1;
9739: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9740: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9741: $tries ++;
9742: }
9743: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9744: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9745: } else {
9746: my @responses = split(/:/,$reply);
9747: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9748: foreach my $line (@responses) {
9749: my ($key,$value) = split(/=/,$line,2);
9750: $$replyref{$key} = $value;
9751: }
9752: } else {
9753: my $pathname = LONCAPA::tempdir();
9754: foreach my $line (@responses) {
9755: my ($key,$value) = split(/=/,$line);
9756: $$replyref{$key} = $value;
9757: if ($value > 0) {
9758: foreach my $item (@{$$affiliatesref{$key}}) {
9759: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9760: my $destname = $pathname.'/'.$filename;
9761: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9762: if ($xml_classlist =~ /^error/) {
9763: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9764: } else {
9765: if ( open(FILE,">",$destname) ) {
9766: print FILE &unescape($xml_classlist);
9767: close(FILE);
9768: } else {
9769: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9770: }
9771: }
9772: }
9773: }
9774: }
9775: }
9776: return 'ok';
9777: }
9778: return 'error';
9779: }
9780:
9781: sub get_query_reply {
9782: my ($queryid,$sleep,$loopmax) = @_;
9783: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9784: $sleep = 0.2;
9785: }
9786: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9787: $loopmax = 100;
9788: }
9789: my $replyfile=LONCAPA::tempdir().$queryid;
9790: my $reply='';
9791: for (1..$loopmax) {
9792: sleep($sleep);
9793: if (-e $replyfile.'.end') {
9794: if (open(my $fh,"<",$replyfile)) {
9795: $reply = join('',<$fh>);
9796: close($fh);
9797: } else { return 'error: reply_file_error'; }
9798: return &unescape($reply);
9799: }
9800: }
9801: return 'timeout:'.$queryid;
9802: }
9803:
9804: sub courselog_query {
9805: #
9806: # possible filters:
9807: # url: url or symb
9808: # username
9809: # domain
9810: # action: view, submit, grade
9811: # start: timestamp
9812: # end: timestamp
9813: #
9814: my (%filters)=@_;
9815: unless ($env{'request.course.id'}) { return 'no_course'; }
9816: if ($filters{'url'}) {
9817: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9818: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9819: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9820: }
9821: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9822: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9823: return &log_query($cname,$cdom,'courselog',%filters);
9824: }
9825:
9826: sub userlog_query {
9827: #
9828: # possible filters:
9829: # action: log check role
9830: # start: timestamp
9831: # end: timestamp
9832: #
9833: my ($uname,$udom,%filters)=@_;
9834: return &log_query($uname,$udom,'userlog',%filters);
9835: }
9836:
9837: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9838:
9839: sub auto_run {
9840: my ($cnum,$cdom) = @_;
9841: my $response = 0;
9842: my $settings;
9843: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9844: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9845: $settings = $domconfig{'autoenroll'};
9846: if ($settings->{'run'} eq '1') {
9847: $response = 1;
9848: }
9849: } else {
9850: my $homeserver;
9851: if (&is_course($cdom,$cnum)) {
9852: $homeserver = &homeserver($cnum,$cdom);
9853: } else {
9854: $homeserver = &domain($cdom,'primary');
9855: }
9856: if ($homeserver ne 'no_host') {
9857: $response = &reply('autorun:'.$cdom,$homeserver);
9858: }
9859: }
9860: return $response;
9861: }
9862:
9863: sub auto_get_sections {
9864: my ($cnum,$cdom,$inst_coursecode) = @_;
9865: my $homeserver;
9866: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9867: $homeserver = &homeserver($cnum,$cdom);
9868: }
9869: if (!defined($homeserver)) {
9870: if ($cdom =~ /^$match_domain$/) {
9871: $homeserver = &domain($cdom,'primary');
9872: }
9873: }
9874: my @secs;
9875: if (defined($homeserver)) {
9876: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9877: unless ($response eq 'refused') {
9878: @secs = split(/:/,$response);
9879: }
9880: }
9881: return @secs;
9882: }
9883:
9884: sub auto_new_course {
9885: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9886: my $homeserver = &homeserver($cnum,$cdom);
9887: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9888: return $response;
9889: }
9890:
9891: sub auto_validate_courseID {
9892: my ($cnum,$cdom,$inst_course_id) = @_;
9893: my $homeserver = &homeserver($cnum,$cdom);
9894: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9895: return $response;
9896: }
9897:
9898: sub auto_validate_instcode {
9899: my ($cnum,$cdom,$instcode,$owner) = @_;
9900: my ($homeserver,$response);
9901: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9902: $homeserver = &homeserver($cnum,$cdom);
9903: }
9904: if (!defined($homeserver)) {
9905: if ($cdom =~ /^$match_domain$/) {
9906: $homeserver = &domain($cdom,'primary');
9907: }
9908: }
9909: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9910: &escape($instcode).':'.&escape($owner),$homeserver));
9911: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9912: return ($outcome,$description,$defaultcredits);
9913: }
9914:
9915: sub auto_validate_inst_crosslist {
9916: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9917: my ($homeserver,$response);
9918: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9919: $homeserver = &homeserver($cnum,$cdom);
9920: }
9921: if (!defined($homeserver)) {
9922: if ($cdom =~ /^$match_domain$/) {
9923: $homeserver = &domain($cdom,'primary');
9924: }
9925: }
9926: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9927: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
9928: &escape($instcode).':'.&escape($inst_xlist).':'.
9929: &escape($coowner),$homeserver);
9930: }
9931: return $response;
9932: }
9933:
9934: sub auto_create_password {
9935: my ($cnum,$cdom,$authparam,$udom) = @_;
9936: my ($homeserver,$response);
9937: my $create_passwd = 0;
9938: my $authchk = '';
9939: if ($udom =~ /^$match_domain$/) {
9940: $homeserver = &domain($udom,'primary');
9941: }
9942: if ($homeserver eq '') {
9943: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9944: $homeserver = &homeserver($cnum,$cdom);
9945: }
9946: }
9947: if ($homeserver eq '') {
9948: $authchk = 'nodomain';
9949: } else {
9950: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9951: if ($response eq 'refused') {
9952: $authchk = 'refused';
9953: } else {
9954: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9955: }
9956: }
9957: return ($authparam,$create_passwd,$authchk);
9958: }
9959:
9960: sub auto_photo_permission {
9961: my ($cnum,$cdom,$students) = @_;
9962: my $homeserver = &homeserver($cnum,$cdom);
9963: my ($outcome,$perm_reqd,$conditions) =
9964: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9965: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9966: return (undef,undef);
9967: }
9968: return ($outcome,$perm_reqd,$conditions);
9969: }
9970:
9971: sub auto_checkphotos {
9972: my ($uname,$udom,$pid) = @_;
9973: my $homeserver = &homeserver($uname,$udom);
9974: my ($result,$resulttype);
9975: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9976: &escape($uname).':'.&escape($pid),
9977: $homeserver));
9978: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9979: return (undef,undef);
9980: }
9981: if ($outcome) {
9982: ($result,$resulttype) = split(/:/,$outcome);
9983: }
9984: return ($result,$resulttype);
9985: }
9986:
9987: sub auto_photochoice {
9988: my ($cnum,$cdom) = @_;
9989: my $homeserver = &homeserver($cnum,$cdom);
9990: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9991: &escape($cdom),
9992: $homeserver)));
9993: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9994: return (undef,undef);
9995: }
9996: return ($update,$comment);
9997: }
9998:
9999: sub auto_photoupdate {
10000: my ($affiliatesref,$dom,$cnum,$photo) = @_;
10001: my $homeserver = &homeserver($cnum,$dom);
10002: my $host=&hostname($homeserver);
10003: my $cmd = '';
10004: my $maxtries = 1;
10005: foreach my $affiliate (keys(%{$affiliatesref})) {
10006: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
10007: }
10008: $cmd =~ s/%%$//;
10009: $cmd = &escape($cmd);
10010: my $query = 'institutionalphotos';
10011: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
10012: unless ($queryid=~/^\Q$host\E\_/) {
10013: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
10014: return 'error: '.$queryid;
10015: }
10016: my $reply = &get_query_reply($queryid);
10017: my $tries = 1;
10018: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
10019: $reply = &get_query_reply($queryid);
10020: $tries ++;
10021: }
10022: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
10023: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
10024: } else {
10025: my @responses = split(/:/,$reply);
10026: my $outcome = shift(@responses);
10027: foreach my $item (@responses) {
10028: my ($key,$value) = split(/=/,$item);
10029: $$photo{$key} = $value;
10030: }
10031: return $outcome;
10032: }
10033: return 'error';
10034: }
10035:
10036: sub auto_instcode_format {
10037: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
10038: $cat_order) = @_;
10039: my $courses = '';
10040: my @homeservers;
10041: if ($caller eq 'global') {
10042: my %servers = &get_servers($codedom,'library');
10043: foreach my $tryserver (keys(%servers)) {
10044: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10045: push(@homeservers,$tryserver);
10046: }
10047: }
10048: } elsif ($caller eq 'requests') {
10049: if ($codedom =~ /^$match_domain$/) {
10050: my $chome = &domain($codedom,'primary');
10051: unless ($chome eq 'no_host') {
10052: push(@homeservers,$chome);
10053: }
10054: }
10055: } else {
10056: push(@homeservers,&homeserver($caller,$codedom));
10057: }
10058: foreach my $code (keys(%{$instcodes})) {
10059: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
10060: }
10061: chop($courses);
10062: my $ok_response = 0;
10063: my $response;
10064: while (@homeservers > 0 && $ok_response == 0) {
10065: my $server = shift(@homeservers);
10066: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
10067: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
10068: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
10069: split(/:/,$response);
10070: %{$codes} = (%{$codes},&str2hash($codes_str));
10071: push(@{$codetitles},&str2array($codetitles_str));
10072: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
10073: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
10074: $ok_response = 1;
10075: }
10076: }
10077: if ($ok_response) {
10078: return 'ok';
10079: } else {
10080: return $response;
10081: }
10082: }
10083:
10084: sub auto_instcode_defaults {
10085: my ($domain,$returnhash,$code_order) = @_;
10086: my @homeservers;
10087:
10088: my %servers = &get_servers($domain,'library');
10089: foreach my $tryserver (keys(%servers)) {
10090: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10091: push(@homeservers,$tryserver);
10092: }
10093: }
10094:
10095: my $response;
10096: foreach my $server (@homeservers) {
10097: $response=&reply('autoinstcodedefaults:'.$domain,$server);
10098: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
10099:
10100: foreach my $pair (split(/\&/,$response)) {
10101: my ($name,$value)=split(/\=/,$pair);
10102: if ($name eq 'code_order') {
10103: @{$code_order} = split(/\&/,&unescape($value));
10104: } else {
10105: $returnhash->{&unescape($name)}=&unescape($value);
10106: }
10107: }
10108: return 'ok';
10109: }
10110:
10111: return $response;
10112: }
10113:
10114: sub auto_possible_instcodes {
10115: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
10116: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
10117: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10118: return;
10119: }
10120: my (@homeservers,$uhome);
10121: if (defined(&domain($domain,'primary'))) {
10122: $uhome=&domain($domain,'primary');
10123: push(@homeservers,&domain($domain,'primary'));
10124: } else {
10125: my %servers = &get_servers($domain,'library');
10126: foreach my $tryserver (keys(%servers)) {
10127: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10128: push(@homeservers,$tryserver);
10129: }
10130: }
10131: }
10132: my $response;
10133: foreach my $server (@homeservers) {
10134: $response=&reply('autopossibleinstcodes:'.$domain,$server);
10135: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
10136: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
10137: split(':',$response);
10138: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
10139: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
10140: foreach my $item (split('&',$cat_title)) {
10141: my ($name,$value)=split('=',$item);
10142: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
10143: }
10144: foreach my $item (split('&',$cat_order)) {
10145: my ($name,$value)=split('=',$item);
10146: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
10147: }
10148: return 'ok';
10149: }
10150: return $response;
10151: }
10152:
10153: sub auto_courserequest_checks {
10154: my ($dom) = @_;
10155: my ($homeserver,%validations);
10156: if ($dom =~ /^$match_domain$/) {
10157: $homeserver = &domain($dom,'primary');
10158: }
10159: unless ($homeserver eq 'no_host') {
10160: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
10161: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10162: my @items = split(/&/,$response);
10163: foreach my $item (@items) {
10164: my ($key,$value) = split('=',$item);
10165: $validations{&unescape($key)} = &thaw_unescape($value);
10166: }
10167: }
10168: }
10169: return %validations;
10170: }
10171:
10172: sub auto_courserequest_validation {
10173: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
10174: my ($homeserver,$response);
10175: if ($dom =~ /^$match_domain$/) {
10176: $homeserver = &domain($dom,'primary');
10177: }
10178: unless ($homeserver eq 'no_host') {
10179: my $customdata;
10180: if (ref($custominfo) eq 'HASH') {
10181: $customdata = &freeze_escape($custominfo);
10182: }
10183: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
10184: ':'.&escape($crstype).':'.&escape($inststatuslist).
10185: ':'.&escape($instcode).':'.&escape($instseclist).':'.
10186: $customdata,$homeserver));
10187: }
10188: return $response;
10189: }
10190:
10191: sub auto_validate_class_sec {
10192: my ($cdom,$cnum,$owners,$inst_class) = @_;
10193: my $homeserver = &homeserver($cnum,$cdom);
10194: my $ownerlist;
10195: if (ref($owners) eq 'ARRAY') {
10196: $ownerlist = join(',',@{$owners});
10197: } else {
10198: $ownerlist = $owners;
10199: }
10200: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
10201: &escape($ownerlist).':'.$cdom,$homeserver);
10202: return $response;
10203: }
10204:
10205: sub auto_instsec_reformat {
10206: my ($cdom,$action,$instsecref) = @_;
10207: return unless(($action eq 'clutter') || ($action eq 'declutter'));
10208: my @homeservers;
10209: if (defined(&domain($cdom,'primary'))) {
10210: push(@homeservers,&domain($cdom,'primary'));
10211: } else {
10212: my %servers = &get_servers($cdom,'library');
10213: foreach my $tryserver (keys(%servers)) {
10214: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10215: push(@homeservers,$tryserver);
10216: }
10217: }
10218: }
10219: my $response;
10220: my %reformatted = %{$instsecref};
10221: foreach my $server (@homeservers) {
10222: if (ref($instsecref) eq 'HASH') {
10223: my $info = &freeze_escape($instsecref);
10224: my $response=&reply('autoinstsecreformat:'.$cdom.':'.
10225: $action.':'.$info,$server);
10226: next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
10227: my @items = split(/&/,$response);
10228: foreach my $item (@items) {
10229: my ($key,$value) = split(/=/,$item);
10230: $reformatted{&unescape($key)} = &thaw_unescape($value);
10231: }
10232: }
10233: }
10234: return %reformatted;
10235: }
10236:
10237: sub auto_validate_instclasses {
10238: my ($cdom,$cnum,$owners,$classesref) = @_;
10239: my ($homeserver,%validations);
10240: $homeserver = &homeserver($cnum,$cdom);
10241: unless ($homeserver eq 'no_host') {
10242: my $ownerlist;
10243: if (ref($owners) eq 'ARRAY') {
10244: $ownerlist = join(',',@{$owners});
10245: } else {
10246: $ownerlist = $owners;
10247: }
10248: if (ref($classesref) eq 'HASH') {
10249: my $classes = &freeze_escape($classesref);
10250: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
10251: ':'.$cdom.':'.$classes,$homeserver);
10252: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10253: my @items = split(/&/,$response);
10254: foreach my $item (@items) {
10255: my ($key,$value) = split('=',$item);
10256: $validations{&unescape($key)} = &thaw_unescape($value);
10257: }
10258: }
10259: }
10260: }
10261: return %validations;
10262: }
10263:
10264: sub auto_crsreq_update {
10265: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
10266: $code,$accessstart,$accessend,$inbound) = @_;
10267: my ($homeserver,%crsreqresponse);
10268: if ($cdom =~ /^$match_domain$/) {
10269: $homeserver = &domain($cdom,'primary');
10270: }
10271: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10272: my $info;
10273: if (ref($inbound) eq 'HASH') {
10274: $info = &freeze_escape($inbound);
10275: }
10276: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
10277: ':'.&escape($action).':'.&escape($ownername).':'.
10278: &escape($ownerdomain).':'.&escape($fullname).':'.
10279: &escape($title).':'.&escape($code).':'.
10280: &escape($accessstart).':'.&escape($accessend).':'.$info,
10281: $homeserver);
10282: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10283: my @items = split(/&/,$response);
10284: foreach my $item (@items) {
10285: my ($key,$value) = split('=',$item);
10286: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
10287: }
10288: }
10289: }
10290: return \%crsreqresponse;
10291: }
10292:
10293: sub auto_export_grades {
10294: my ($cdom,$cnum,$inforef,$gradesref) = @_;
10295: my ($homeserver,%exportresponse);
10296: if ($cdom =~ /^$match_domain$/) {
10297: $homeserver = &domain($cdom,'primary');
10298: }
10299: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10300: my $info;
10301: if (ref($inforef) eq 'HASH') {
10302: $info = &freeze_escape($inforef);
10303: }
10304: if (ref($gradesref) eq 'HASH') {
10305: my $grades = &freeze_escape($gradesref);
10306: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
10307: $info.':'.$grades,$homeserver);
10308: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
10309: my @items = split(/&/,$response);
10310: foreach my $item (@items) {
10311: my ($key,$value) = split('=',$item);
10312: $exportresponse{&unescape($key)} = &thaw_unescape($value);
10313: }
10314: }
10315: }
10316: }
10317: return \%exportresponse;
10318: }
10319:
10320: sub check_instcode_cloning {
10321: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
10322: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10323: return;
10324: }
10325: my $canclone;
10326: if (@{$code_order} > 0) {
10327: my $instcoderegexp ='^';
10328: my @clonecodes = split(/\&/,$cloner);
10329: foreach my $item (@{$code_order}) {
10330: if (grep(/^\Q$item\E=/,@clonecodes)) {
10331: foreach my $pair (@clonecodes) {
10332: my ($key,$val) = split(/\=/,$pair,2);
10333: $val = &unescape($val);
10334: if ($key eq $item) {
10335: $instcoderegexp .= '('.$val.')';
10336: last;
10337: }
10338: }
10339: } else {
10340: $instcoderegexp .= $codedefaults->{$item};
10341: }
10342: }
10343: $instcoderegexp .= '$';
10344: my (@from,@to);
10345: eval {
10346: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10347: (@to) = ($clonetocode =~ /$instcoderegexp/);
10348: };
10349: if ((@from > 0) && (@to > 0)) {
10350: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10351: if (!@diffs) {
10352: $canclone = 1;
10353: }
10354: }
10355: }
10356: return $canclone;
10357: }
10358:
10359: sub default_instcode_cloning {
10360: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
10361: my (%codedefaults,@code_order,$canclone);
10362: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
10363: %codedefaults = %{$codedefaultsref};
10364: @code_order = @{$codeorderref};
10365: } elsif ($clonedom) {
10366: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
10367: }
10368: if (($domdefclone) && (@code_order)) {
10369: my @clonecodes = split(/\+/,$domdefclone);
10370: my $instcoderegexp ='^';
10371: foreach my $item (@code_order) {
10372: if (grep(/^\Q$item\E$/,@clonecodes)) {
10373: $instcoderegexp .= '('.$codedefaults{$item}.')';
10374: } else {
10375: $instcoderegexp .= $codedefaults{$item};
10376: }
10377: }
10378: $instcoderegexp .= '$';
10379: my (@from,@to);
10380: eval {
10381: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10382: (@to) = ($clonetocode =~ /$instcoderegexp/);
10383: };
10384: if ((@from > 0) && (@to > 0)) {
10385: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10386: if (!@diffs) {
10387: $canclone = 1;
10388: }
10389: }
10390: }
10391: return $canclone;
10392: }
10393:
10394: # ------------------------------------------------------- Course Group routines
10395:
10396: sub get_coursegroups {
10397: my ($cdom,$cnum,$group,$namespace) = @_;
10398: return(&dump($namespace,$cdom,$cnum,$group));
10399: }
10400:
10401: sub modify_coursegroup {
10402: my ($cdom,$cnum,$groupsettings) = @_;
10403: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
10404: }
10405:
10406: sub toggle_coursegroup_status {
10407: my ($cdom,$cnum,$group,$action) = @_;
10408: my ($from_namespace,$to_namespace);
10409: if ($action eq 'delete') {
10410: $from_namespace = 'coursegroups';
10411: $to_namespace = 'deleted_groups';
10412: } else {
10413: $from_namespace = 'deleted_groups';
10414: $to_namespace = 'coursegroups';
10415: }
10416: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
10417: if (my $tmp = &error(%curr_group)) {
10418: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
10419: return ('read error',$tmp);
10420: } else {
10421: my %savedsettings = %curr_group;
10422: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
10423: my $deloutcome;
10424: if ($result eq 'ok') {
10425: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
10426: } else {
10427: return ('write error',$result);
10428: }
10429: if ($deloutcome eq 'ok') {
10430: return 'ok';
10431: } else {
10432: return ('delete error',$deloutcome);
10433: }
10434: }
10435: }
10436:
10437: sub modify_group_roles {
10438: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context,
10439: $othdomby,$requester) = @_;
10440: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
10441: my $role = 'gr/'.&escape($userprivs);
10442: my ($uname,$udom) = split(/:/,$user);
10443: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context,
10444: $othdomby,$requester);
10445: if ($result eq 'ok') {
10446: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
10447: }
10448: return $result;
10449: }
10450:
10451: sub modify_coursegroup_membership {
10452: my ($cdom,$cnum,$membership) = @_;
10453: my $result = &put('groupmembership',$membership,$cdom,$cnum);
10454: return $result;
10455: }
10456:
10457: sub get_active_groups {
10458: my ($udom,$uname,$cdom,$cnum) = @_;
10459: my $now = time;
10460: my %groups = ();
10461: foreach my $key (keys(%env)) {
10462: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
10463: my ($start,$end) = split(/\./,$env{$key});
10464: if (($end!=0) && ($end<$now)) { next; }
10465: if (($start!=0) && ($start>$now)) { next; }
10466: if ($1 eq $cdom && $2 eq $cnum) {
10467: $groups{$3} = $env{$key} ;
10468: }
10469: }
10470: }
10471: return %groups;
10472: }
10473:
10474: sub get_group_membership {
10475: my ($cdom,$cnum,$group) = @_;
10476: return(&dump('groupmembership',$cdom,$cnum,$group));
10477: }
10478:
10479: sub get_users_groups {
10480: my ($udom,$uname,$courseid) = @_;
10481: my @usersgroups;
10482: my $cachetime=1800;
10483:
10484: my $hashid="$udom:$uname:$courseid";
10485: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
10486: if (defined($cached)) {
10487: @usersgroups = split(/:/,$grouplist);
10488: } else {
10489: $grouplist = '';
10490: my $courseurl = &courseid_to_courseurl($courseid);
10491: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
10492: my $access_end = $env{'course.'.$courseid.
10493: '.default_enrollment_end_date'};
10494: my $now = time;
10495: foreach my $key (keys(%roleshash)) {
10496: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
10497: my $group = $1;
10498: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
10499: my $start = $2;
10500: my $end = $1;
10501: if ($start == -1) { next; } # deleted from group
10502: if (($start!=0) && ($start>$now)) { next; }
10503: if (($end!=0) && ($end<$now)) {
10504: if ($access_end && $access_end < $now) {
10505: if ($access_end - $end < 86400) {
10506: push(@usersgroups,$group);
10507: }
10508: }
10509: next;
10510: }
10511: push(@usersgroups,$group);
10512: }
10513: }
10514: }
10515: @usersgroups = &sort_course_groups($courseid,@usersgroups);
10516: $grouplist = join(':',@usersgroups);
10517: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
10518: }
10519: return @usersgroups;
10520: }
10521:
10522: sub devalidate_getgroups_cache {
10523: my ($udom,$uname,$cdom,$cnum)=@_;
10524: my $courseid = $cdom.'_'.$cnum;
10525:
10526: my $hashid="$udom:$uname:$courseid";
10527: &devalidate_cache_new('getgroups',$hashid);
10528: }
10529:
10530: # ------------------------------------------------------------------ Plain Text
10531:
10532: sub plaintext {
10533: my ($short,$type,$cid,$forcedefault) = @_;
10534: if ($short =~ m{^cr/}) {
10535: return (split('/',$short))[-1];
10536: }
10537: if (!defined($cid)) {
10538: $cid = $env{'request.course.id'};
10539: }
10540: my %rolenames = (
10541: Course => 'std',
10542: Community => 'alt1',
10543: Placement => 'std',
10544: );
10545: if ($cid ne '') {
10546: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10547: unless ($forcedefault) {
10548: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10549: &Apache::lonlocal::mt_escape(\$roletext);
10550: return &Apache::lonlocal::mt($roletext);
10551: }
10552: }
10553: }
10554: if ((defined($type)) && (defined($rolenames{$type})) &&
10555: (defined($rolenames{$type})) &&
10556: (defined($prp{$short}{$rolenames{$type}}))) {
10557: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10558: } elsif ($cid ne '') {
10559: my $crstype = $env{'course.'.$cid.'.type'};
10560: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10561: (defined($prp{$short}{$rolenames{$crstype}}))) {
10562: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10563: }
10564: }
10565: return &Apache::lonlocal::mt($prp{$short}{'std'});
10566: }
10567:
10568: # ----------------------------------------------------------------- Assign Role
10569:
10570: sub assignrole {
10571: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10572: $context,$othdomby,$requester,$reqsec,$reqrole)=@_;
10573: my $mrole;
10574: if ($role =~ /^cr\//) {
10575: my $cwosec=$url;
10576: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10577: if ((!&allowed('ccr',$cwosec)) && (!&allowed('ccr',$udom))) {
10578: my $refused = 1;
10579: if ($context eq 'requestcourses') {
10580: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10581: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10582: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10583: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10584: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10585: if ($crsenv{'internal.courseowner'} eq
10586: $env{'user.name'}.':'.$env{'user.domain'}) {
10587: $refused = '';
10588: }
10589: }
10590: }
10591: }
10592: } elsif (($context eq 'course') && ($othdomby eq 'othdombyuser')) {
10593: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10594: my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
10595: my $key = "$uname:$udom:$role:$sec";
10596: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10597: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10598: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10599: $refused = '';
10600: }
10601: }
10602: }
10603: if ($refused) {
10604: &logthis('Refused custom assignrole: '.
10605: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10606: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10607: return 'refused';
10608: }
10609: }
10610: $mrole='cr';
10611: } elsif ($role =~ /^gr\//) {
10612: my $cwogrp=$url;
10613: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10614: if (!&allowed('mdg',$cwogrp)) {
10615: my $refused = 1;
10616: if (($refused) && ($othdomby eq 'othdombyuser') && ($requester ne '') && ($reqrole ne '')) {
10617: my ($cdom,$cnum) = ($cwogrp =~ m{^/?($match_domain)/($match_courseid)$});
10618: my $key = "$uname:$udom:$reqrole:$reqsec";
10619: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10620: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10621: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10622: $refused = '';
10623: }
10624: }
10625: }
10626: if ($refused) {
10627: &logthis('Refused group assignrole: '.
10628: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10629: $env{'user.name'}.' at '.$env{'user.domain'});
10630: return 'refused';
10631: }
10632: }
10633: $mrole='gr';
10634: } else {
10635: my $cwosec=$url;
10636: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10637: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10638: my $refused;
10639: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10640: if (!(&allowed('c'.$role,$url))) {
10641: $refused = 1;
10642: }
10643: } else {
10644: $refused = 1;
10645: }
10646: if ($refused) {
10647: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10648: if (!$selfenroll && ($othdomby ne 'othdombyuser') &&
10649: (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10650: my %crsenv;
10651: if ($role eq 'cc' || $role eq 'co') {
10652: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10653: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10654: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10655: if ($crsenv{'internal.courseowner'} eq
10656: $env{'user.name'}.':'.$env{'user.domain'}) {
10657: $refused = '';
10658: }
10659: }
10660: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10661: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10662: if ($crsenv{'internal.courseowner'} eq
10663: $env{'user.name'}.':'.$env{'user.domain'}) {
10664: $refused = '';
10665: }
10666: }
10667: }
10668: }
10669: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10670: if ($role eq 'st') {
10671: $refused = '';
10672: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10673: $refused = '';
10674: }
10675: } elsif ($othdomby eq 'othdombyuser') {
10676: my ($key,%queuedrolereq);
10677: if ($context eq 'course') {
10678: my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
10679: $key = "$uname:$udom:$role:$sec";
10680: %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10681: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10682: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10683: if ((($role eq 'cc') && ($cnum !~ /^$match_community$/)) ||
10684: (($role eq 'co') && ($cnum =~ /^$match_community$/))) {
10685: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10686: if ($crsenv{'internal.courseowner'} eq $requester) {
10687: $refused = '';
10688: }
10689: } elsif ($role =~ /^(?:in|ta|ep|st)$/) {
10690: $refused = '';
10691: }
10692: }
10693: }
10694: } elsif (($context eq 'author') && ($role =~ /^ca|aa$/)) {
10695: my $key = "$uname:$udom:$role";
10696: my ($audom,$auname) = ($url =~ m{^/($match_domain)/($match_username)$});
10697: if (($audom ne '') && ($auname ne '')) {
10698: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$audom,$auname);
10699: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10700: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10701: $refused = '';
10702: }
10703: }
10704: }
10705: } elsif (($context eq 'domain') && ($role ne 'dc') && ($role ne 'su')) {
10706: my $key = "$uname:$udom:$role";
10707: my ($roledom) = ($url =~ m{^/($match_domain)/\Q$role\E$});
10708: if ($roledom ne '') {
10709: my $confname = $roledom.'-domainconfig';
10710: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$roledom,$confname);
10711: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10712: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10713: $refused = '';
10714: }
10715: }
10716: }
10717: }
10718: } elsif ($context eq 'requestcourses') {
10719: my @possroles = ('st','ta','ep','in','cc','co');
10720: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10721: my $wrongcc;
10722: if ($cnum =~ /^$match_community$/) {
10723: $wrongcc = 1 if ($role eq 'cc');
10724: } else {
10725: $wrongcc = 1 if ($role eq 'co');
10726: }
10727: unless ($wrongcc) {
10728: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10729: if ($crsenv{'internal.courseowner'} eq
10730: $env{'user.name'}.':'.$env{'user.domain'}) {
10731: $refused = '';
10732: }
10733: }
10734: }
10735: } elsif ($context eq 'requestauthor') {
10736: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10737: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10738: if ($env{'environment.requestauthor'} eq 'automatic') {
10739: $refused = '';
10740: } else {
10741: my %domdefaults = &get_domain_defaults($udom);
10742: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10743: my $checkbystatus;
10744: if ($env{'user.adv'}) {
10745: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10746: if ($disposition eq 'automatic') {
10747: $refused = '';
10748: } elsif ($disposition eq '') {
10749: $checkbystatus = 1;
10750: }
10751: } else {
10752: $checkbystatus = 1;
10753: }
10754: if ($checkbystatus) {
10755: if ($env{'environment.inststatus'}) {
10756: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10757: foreach my $type (@inststatuses) {
10758: if (($type ne '') &&
10759: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10760: $refused = '';
10761: }
10762: }
10763: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10764: $refused = '';
10765: }
10766: }
10767: }
10768: }
10769: }
10770: }
10771: if ($refused) {
10772: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10773: ' '.$role.' '.$end.' '.$start.' by '.
10774: $env{'user.name'}.' at '.$env{'user.domain'});
10775: return 'refused';
10776: }
10777: }
10778: } elsif ($role eq 'au') {
10779: if ($url ne '/'.$udom.'/') {
10780: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10781: ' to assign author role for '.$uname.':'.$udom.
10782: ' in domain: '.$url.' refused (wrong domain).');
10783: return 'refused';
10784: }
10785: }
10786: $mrole=$role;
10787: }
10788: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10789: "$udom:$uname:$url".'_'."$mrole=$role";
10790: if ($end) { $command.='_'.$end; }
10791: if ($start) {
10792: if ($end) {
10793: $command.='_'.$start;
10794: } else {
10795: $command.='_0_'.$start;
10796: }
10797: }
10798: my $origstart = $start;
10799: my $origend = $end;
10800: my $delflag;
10801: # actually delete
10802: if ($deleteflag) {
10803: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10804: # modify command to delete the role
10805: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10806: "$udom:$uname:$url".'_'."$mrole";
10807: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10808: # set start and finish to negative values for userrolelog
10809: $start=-1;
10810: $end=-1;
10811: $delflag = 1;
10812: }
10813: }
10814: # send command
10815: my $answer=&reply($command,&homeserver($uname,$udom));
10816: # log new user role if status is ok
10817: if ($answer eq 'ok') {
10818: &userrolelog($role,$uname,$udom,$url,$start,$end);
10819: if (($role eq 'cc') || ($role eq 'in') ||
10820: ($role eq 'ep') || ($role eq 'ad') ||
10821: ($role eq 'ta') || ($role eq 'st') ||
10822: ($role=~/^cr/) || ($role eq 'gr') ||
10823: ($role eq 'co')) {
10824: # for course roles, perform group memberships changes triggered by role change.
10825: unless ($role =~ /^gr/) {
10826: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10827: $origstart,$selfenroll,$context);
10828: }
10829: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10830: $selfenroll,$context,$othdomby,$requester);
10831: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10832: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10833: ($role eq 'da')) {
10834: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10835: $context,$othdomby,$requester);
10836: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10837: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10838: $context,$othdomby,$requester);
10839: }
10840: if ($role eq 'cc') {
10841: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10842: }
10843: }
10844: return $answer;
10845: }
10846:
10847: sub autoupdate_coowners {
10848: my ($url,$end,$start,$uname,$udom) = @_;
10849: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10850: if (($cdom ne '') && ($cnum ne '')) {
10851: my $now = time;
10852: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10853: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10854: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10855: my $instcode = $coursehash{'internal.coursecode'};
10856: my $xlists = $coursehash{'internal.crosslistings'};
10857: if ($instcode ne '') {
10858: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10859: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10860: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10861: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10862: unless ($result eq 'valid') {
10863: if ($xlists ne '') {
10864: foreach my $xlist (split(',',$xlists)) {
10865: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10866: $result =
10867: &auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10868: $inst_crosslist,$uname.':'.$udom);
10869: last if ($result eq 'valid');
10870: }
10871: }
10872: }
10873: if ($result eq 'valid') {
10874: if ($coursehash{'internal.co-owners'}) {
10875: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10876: push(@newcoowners,$coowner);
10877: }
10878: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10879: push(@newcoowners,$uname.':'.$udom);
10880: }
10881: @newcoowners = sort(@newcoowners);
10882: } else {
10883: push(@newcoowners,$uname.':'.$udom);
10884: }
10885: } elsif ($coursehash{'internal.co-owners'}) {
10886: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10887: unless ($coowner eq $uname.':'.$udom) {
10888: push(@newcoowners,$coowner);
10889: }
10890: }
10891: unless (@newcoowners > 0) {
10892: $delcoowners = 1;
10893: $coowners = '';
10894: }
10895: }
10896: if (@newcoowners || $delcoowners) {
10897: &store_coowners($cdom,$cnum,$coursehash{'home'},
10898: $delcoowners,@newcoowners);
10899: }
10900: }
10901: }
10902: }
10903: }
10904: }
10905: }
10906:
10907: sub store_coowners {
10908: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10909: my $cid = $cdom.'_'.$cnum;
10910: my ($coowners,$delresult,$putresult);
10911: if (@newcoowners) {
10912: $coowners = join(',',@newcoowners);
10913: my %coownershash = (
10914: 'internal.co-owners' => $coowners,
10915: );
10916: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10917: if ($putresult eq 'ok') {
10918: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10919: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10920: }
10921: }
10922: }
10923: if ($delcoowners) {
10924: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10925: if ($delresult eq 'ok') {
10926: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10927: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10928: }
10929: }
10930: }
10931: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10932: my %crsinfo =
10933: &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10934: if (ref($crsinfo{$cid}) eq 'HASH') {
10935: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10936: my $cidput = &courseidput($cdom,\%crsinfo,$chome,'notime');
10937: }
10938: }
10939: }
10940:
10941: # -------------------------------------------------- Modify user authentication
10942: # Overrides without validation
10943:
10944: sub modifyuserauth {
10945: my ($udom,$uname,$umode,$upass)=@_;
10946: my $uhome=&homeserver($uname,$udom);
10947: my $allowed;
10948: if (&allowed('mau',$udom)) {
10949: $allowed = 1;
10950: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10951: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10952: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10953: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10954: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10955: if (($cdom ne '') && ($cnum ne '')) {
10956: my $is_owner = &is_course_owner($cdom,$cnum);
10957: if ($is_owner) {
10958: $allowed = 1;
10959: }
10960: }
10961: }
10962: unless ($allowed) { return 'refused'; }
10963: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10964: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10965: ' in domain '.$env{'request.role.domain'});
10966: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10967: &escape($upass),$uhome);
10968: my $ip = &get_requestor_ip();
10969: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10970: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10971: '(Remote '.$ip.'): '.$reply);
10972: &log($udom,,$uname,$uhome,
10973: 'Authentication changed by '.$env{'user.domain'}.', '.
10974: $env{'user.name'}.', '.$umode.
10975: '(Remote '.$ip.'): '.$reply);
10976: unless ($reply eq 'ok') {
10977: &logthis('Authentication mode error: '.$reply);
10978: return 'error: '.$reply;
10979: }
10980: return 'ok';
10981: }
10982:
10983: # --------------------------------------------------------------- Modify a user
10984:
10985: sub modifyuser {
10986: my ($udom, $uname, $uid,
10987: $umode, $upass, $first,
10988: $middle, $last, $gene,
10989: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10990: $udom= &LONCAPA::clean_domain($udom);
10991: $uname=&LONCAPA::clean_username($uname);
10992: my $showcandelete = 'none';
10993: if (ref($candelete) eq 'ARRAY') {
10994: if (@{$candelete} > 0) {
10995: $showcandelete = join(', ',@{$candelete});
10996: }
10997: }
10998: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10999: $umode.', '.$first.', '.$middle.', '.
11000: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
11001: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
11002: ' desiredhome not specified').
11003: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
11004: ' in domain '.$env{'request.role.domain'});
11005: my $uhome=&homeserver($uname,$udom,'true');
11006: my $newuser;
11007: if ($uhome eq 'no_host') {
11008: $newuser = 1;
11009: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
11010: ($umode eq 'lti')) {
11011: return 'error: more information needed to create new user';
11012: }
11013: }
11014: # ----------------------------------------------------------------- Create User
11015: if (($uhome eq 'no_host') &&
11016: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
11017: my $unhome='';
11018: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
11019: $unhome = $desiredhome;
11020: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
11021: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
11022: } else { # load balancing routine for determining $unhome
11023: my $loadm=10000000;
11024: my %servers = &get_servers($udom,'library');
11025: foreach my $tryserver (keys(%servers)) {
11026: my $answer=reply('load',$tryserver);
11027: if (($answer=~/\d+/) && ($answer<$loadm)) {
11028: $loadm=$answer;
11029: $unhome=$tryserver;
11030: }
11031: }
11032: }
11033: if (($unhome eq '') || ($unhome eq 'no_host')) {
11034: return 'error: unable to find a home server for '.$uname.
11035: ' in domain '.$udom;
11036: }
11037: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
11038: &escape($upass),$unhome);
11039: unless ($reply eq 'ok') {
11040: return 'error: '.$reply;
11041: }
11042: $uhome=&homeserver($uname,$udom,'true');
11043: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
11044: return 'error: unable verify users home machine.';
11045: }
11046: } # End of creation of new user
11047: # ---------------------------------------------------------------------- Add ID
11048: if ($uid) {
11049: $uid=~tr/A-Z/a-z/;
11050: my %uidhash=&idrget($udom,$uname);
11051: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
11052: && (!$forceid)) {
11053: unless ($uid eq $uidhash{$uname}) {
11054: return 'error: user id "'.$uid.'" does not match '.
11055: 'current user id "'.$uidhash{$uname}.'".';
11056: }
11057: } else {
11058: &idput($udom,{$uname => $uid},$uhome,'ids');
11059: }
11060: }
11061: # -------------------------------------------------------------- Add names, etc
11062: my @tmp=&get('environment',
11063: ['firstname','middlename','lastname','generation','id',
11064: 'permanentemail','inststatus'],
11065: $udom,$uname);
11066: my (%names,%oldnames);
11067: if ($tmp[0] =~ m/^error:.*/) {
11068: %names=();
11069: } else {
11070: %names = @tmp;
11071: %oldnames = %names;
11072: }
11073: #
11074: # If name, email and/or uid are blank (e.g., because an uploaded file
11075: # of users did not contain them), do not overwrite existing values
11076: # unless field is in $candelete array ref.
11077: #
11078:
11079: my @fields = ('firstname','middlename','lastname','generation',
11080: 'permanentemail','id');
11081: my %newvalues;
11082: if (ref($candelete) eq 'ARRAY') {
11083: foreach my $field (@fields) {
11084: if (grep(/^\Q$field\E$/,@{$candelete})) {
11085: if ($field eq 'firstname') {
11086: $names{$field} = $first;
11087: } elsif ($field eq 'middlename') {
11088: $names{$field} = $middle;
11089: } elsif ($field eq 'lastname') {
11090: $names{$field} = $last;
11091: } elsif ($field eq 'generation') {
11092: $names{$field} = $gene;
11093: } elsif ($field eq 'permanentemail') {
11094: $names{$field} = $email;
11095: } elsif ($field eq 'id') {
11096: $names{$field} = $uid;
11097: }
11098: }
11099: }
11100: }
11101: if ($first) { $names{'firstname'} = $first; }
11102: if (defined($middle)) { $names{'middlename'} = $middle; }
11103: if ($last) { $names{'lastname'} = $last; }
11104: if (defined($gene)) { $names{'generation'} = $gene; }
11105: if ($email) {
11106: $email=~s/[^\w\@\.\-\,]//gs;
11107: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
11108: }
11109: if ($uid) { $names{'id'} = $uid; }
11110: if (defined($inststatus)) {
11111: $names{'inststatus'} = '';
11112: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
11113: if (ref($usertypes) eq 'HASH') {
11114: my @okstatuses;
11115: foreach my $item (split(/:/,$inststatus)) {
11116: if (defined($usertypes->{$item})) {
11117: push(@okstatuses,$item);
11118: }
11119: }
11120: if (@okstatuses) {
11121: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
11122: }
11123: }
11124: }
11125: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
11126: $umode.', '.$first.', '.$middle.', '.
11127: $last.', '.$gene.', '.$email.', '.$inststatus;
11128: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
11129: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
11130: } else {
11131: $logmsg .= ' during self creation';
11132: }
11133: my $changed;
11134: if ($newuser) {
11135: $changed = 1;
11136: } else {
11137: foreach my $field (@fields) {
11138: if ($names{$field} ne $oldnames{$field}) {
11139: $changed = 1;
11140: last;
11141: }
11142: }
11143: }
11144: unless ($changed) {
11145: $logmsg = 'No changes in user information needed for: '.$logmsg;
11146: &logthis($logmsg);
11147: return 'ok';
11148: }
11149: my $reply = &put('environment', \%names, $udom,$uname);
11150: if ($reply ne 'ok') {
11151: return 'error: '.$reply;
11152: }
11153: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
11154: &devalidate_cache_new('emailscache',$uname.':'.$udom);
11155: }
11156: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
11157: &devalidate_cache_new('namescache',$uname.':'.$udom);
11158: $logmsg = 'Success modifying user '.$logmsg;
11159: &logthis($logmsg);
11160: return 'ok';
11161: }
11162:
11163: # -------------------------------------------------------------- Modify student
11164:
11165: sub modifystudent {
11166: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
11167: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
11168: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
11169: if (!$cid) {
11170: unless ($cid=$env{'request.course.id'}) {
11171: return 'not_in_class';
11172: }
11173: }
11174: # --------------------------------------------------------------- Make the user
11175: my $reply=&modifyuser
11176: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
11177: $desiredhome,$email,$inststatus);
11178: unless ($reply eq 'ok') { return $reply; }
11179: # This will cause &modify_student_enrollment to get the uid from the
11180: # student's environment
11181: $uid = undef if (!$forceid);
11182: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
11183: $gene,$usec,$end,$start,$type,$locktype,
11184: $cid,$selfenroll,$context,$credits,$instsec);
11185: return $reply;
11186: }
11187:
11188: sub modify_student_enrollment {
11189: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
11190: $locktype,$cid,$selfenroll,$context,$credits,$instsec,$othdomby,$requester) = @_;
11191: my ($cdom,$cnum,$chome);
11192: if (!$cid) {
11193: unless ($cid=$env{'request.course.id'}) {
11194: return 'not_in_class';
11195: }
11196: $cdom=$env{'course.'.$cid.'.domain'};
11197: $cnum=$env{'course.'.$cid.'.num'};
11198: } else {
11199: ($cdom,$cnum)=split(/_/,$cid);
11200: }
11201: $chome=$env{'course.'.$cid.'.home'};
11202: if (!$chome) {
11203: $chome=&homeserver($cnum,$cdom);
11204: }
11205: if (!$chome) { return 'unknown_course'; }
11206: # Make sure the user exists
11207: my $uhome=&homeserver($uname,$udom);
11208: if (($uhome eq '') || ($uhome eq 'no_host')) {
11209: return 'error: no such user';
11210: }
11211: # Get student data if we were not given enough information
11212: if (!defined($first) || $first eq '' ||
11213: !defined($last) || $last eq '' ||
11214: !defined($uid) || $uid eq '' ||
11215: !defined($middle) || $middle eq '' ||
11216: !defined($gene) || $gene eq '') {
11217: # They did not supply us with enough data to enroll the student, so
11218: # we need to pick up more information.
11219: my %tmp = &get('environment',
11220: ['firstname','middlename','lastname', 'generation','id']
11221: ,$udom,$uname);
11222:
11223: #foreach my $key (keys(%tmp)) {
11224: # &logthis("key $key = ".$tmp{$key});
11225: #}
11226: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
11227: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
11228: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
11229: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
11230: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
11231: }
11232: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
11233: my $user = "$uname:$udom";
11234: my %old_entry = &get('classlist',[$user],$cdom,$cnum);
11235: my $reply=cput('classlist',
11236: {$user =>
11237: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
11238: $cdom,$cnum);
11239: if (($reply eq 'ok') || ($reply eq 'delayed')) {
11240: &devalidate_getsection_cache($udom,$uname,$cid);
11241: } else {
11242: return 'error: '.$reply;
11243: }
11244: # Add student role to user
11245: my $uurl='/'.$cid;
11246: $uurl=~s/\_/\//g;
11247: if ($usec) {
11248: $uurl.='/'.$usec;
11249: }
11250: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
11251: $selfenroll,$context,$othdomby,$requester);
11252: if ($result ne 'ok') {
11253: if ($old_entry{$user} ne '') {
11254: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
11255: } else {
11256: $reply = &del('classlist',[$user],$cdom,$cnum);
11257: }
11258: }
11259: return $result;
11260: }
11261:
11262: sub format_name {
11263: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
11264: my $name;
11265: if ($first ne 'lastname') {
11266: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
11267: } else {
11268: if ($lastname=~/\S/) {
11269: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
11270: $name=~s/\s+,/,/;
11271: } else {
11272: $name.= $firstname.' '.$middlename.' '.$generation;
11273: }
11274: }
11275: $name=~s/^\s+//;
11276: $name=~s/\s+$//;
11277: $name=~s/\s+/ /g;
11278: return $name;
11279: }
11280:
11281: # ------------------------------------------------- Write to course preferences
11282:
11283: sub writecoursepref {
11284: my ($courseid,%prefs)=@_;
11285: $courseid=~s/^\///;
11286: $courseid=~s/\_/\//g;
11287: my ($cdomain,$cnum)=split(/\//,$courseid);
11288: my $chome=homeserver($cnum,$cdomain);
11289: if (($chome eq '') || ($chome eq 'no_host')) {
11290: return 'error: no such course';
11291: }
11292: my $cstring='';
11293: foreach my $pref (keys(%prefs)) {
11294: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
11295: }
11296: $cstring=~s/\&$//;
11297: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
11298: }
11299:
11300: # ---------------------------------------------------------- Make/modify course
11301:
11302: sub createcourse {
11303: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
11304: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
11305: $url=&declutter($url);
11306: my $cid='';
11307: if ($context eq 'requestcourses') {
11308: my $can_create = 0;
11309: my ($ownername,$ownerdom) = split(':',$course_owner);
11310: if ($udom eq $ownerdom) {
11311: my $reload;
11312: if (($callercontext eq 'auto') &&
11313: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
11314: $reload = 'reload';
11315: }
11316: if (&usertools_access($ownername,$ownerdom,$category,$reload,
11317: $context)) {
11318: $can_create = 1;
11319: }
11320: } else {
11321: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
11322: $category);
11323: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
11324: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
11325: if (@curr > 0) {
11326: my @options = qw(approval validate autolimit);
11327: my $optregex = join('|',@options);
11328: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
11329: $can_create = 1;
11330: }
11331: }
11332: }
11333: }
11334: if ($can_create) {
11335: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
11336: unless (&allowed('ccc',$udom)) {
11337: return 'refused';
11338: }
11339: }
11340: } else {
11341: return 'refused';
11342: }
11343: } elsif (!&allowed('ccc',$udom)) {
11344: return 'refused';
11345: }
11346: # --------------------------------------------------------------- Get Unique ID
11347: my $uname;
11348: if ($cnum =~ /^$match_courseid$/) {
11349: my $chome=&homeserver($cnum,$udom,'true');
11350: if (($chome eq '') || ($chome eq 'no_host')) {
11351: $uname = $cnum;
11352: } else {
11353: $uname = &generate_coursenum($udom,$crstype);
11354: }
11355: } else {
11356: $uname = &generate_coursenum($udom,$crstype);
11357: }
11358: return $uname if ($uname =~ /^error/);
11359: # -------------------------------------------------- Check supplied server name
11360: if (!defined($course_server)) {
11361: if (defined(&domain($udom,'primary'))) {
11362: $course_server = &domain($udom,'primary');
11363: } else {
11364: $course_server = $env{'user.home'};
11365: }
11366: }
11367: my %host_servers =
11368: &get_servers($udom,'library');
11369: unless ($host_servers{$course_server}) {
11370: return 'error: invalid home server for course: '.$course_server;
11371: }
11372: # ------------------------------------------------------------- Make the course
11373: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
11374: $course_server);
11375: unless ($reply eq 'ok') { return 'error: '.$reply; }
11376: my $uhome=&homeserver($uname,$udom,'true');
11377: if (($uhome eq '') || ($uhome eq 'no_host')) {
11378: return 'error: no such course';
11379: }
11380: # ----------------------------------------------------------------- Course made
11381: # log existence
11382: my $now = time;
11383: my $newcourse = {
11384: $udom.'_'.$uname => {
11385: description => $description,
11386: inst_code => $inst_code,
11387: owner => $course_owner,
11388: type => $crstype,
11389: creator => $env{'user.name'}.':'.
11390: $env{'user.domain'},
11391: created => $now,
11392: context => $context,
11393: },
11394: };
11395: &courseidput($udom,$newcourse,$uhome,'notime');
11396: # set toplevel url
11397: my $topurl=$url;
11398: unless ($nonstandard) {
11399: # ------------------------------------------ For standard courses, make top url
11400: my $mapurl=&clutter($url);
11401: if ($mapurl eq '/res/') { $mapurl=''; }
11402: $env{'form.initmap'}=(<<ENDINITMAP);
11403: <map>
11404: <resource id="1" type="start"></resource>
11405: <resource id="2" src="$mapurl"></resource>
11406: <resource id="3" type="finish"></resource>
11407: <link index="1" from="1" to="2"></link>
11408: <link index="2" from="2" to="3"></link>
11409: </map>
11410: ENDINITMAP
11411: $topurl=&declutter(
11412: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
11413: );
11414: }
11415: # ----------------------------------------------------------- Write preferences
11416: &writecoursepref($udom.'_'.$uname,
11417: ('description' => $description,
11418: 'url' => $topurl,
11419: 'internal.creator' => $env{'user.name'}.':'.
11420: $env{'user.domain'},
11421: 'internal.created' => $now,
11422: 'internal.creationcontext' => $context)
11423: );
11424: return '/'.$udom.'/'.$uname;
11425: }
11426:
11427: # ------------------------------------------------------------------- Create ID
11428: sub generate_coursenum {
11429: my ($udom,$crstype) = @_;
11430: my $domdesc = &domain($udom);
11431: return 'error: invalid domain' if ($domdesc eq '');
11432: my $first;
11433: if ($crstype eq 'Community') {
11434: $first = '0';
11435: } else {
11436: $first = int(1+rand(9));
11437: }
11438: my $uname=$first.
11439: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11440: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11441: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11442: # ----------------------------------------------- Make sure that does not exist
11443: my $uhome=&homeserver($uname,$udom,'true');
11444: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11445: if ($crstype eq 'Community') {
11446: $first = '0';
11447: } else {
11448: $first = int(1+rand(9));
11449: }
11450: $uname=$first.
11451: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11452: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11453: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11454: $uhome=&homeserver($uname,$udom,'true');
11455: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11456: return 'error: unable to generate unique course-ID';
11457: }
11458: }
11459: return $uname;
11460: }
11461:
11462: sub is_course {
11463: my ($cdom, $cnum) = scalar(@_) == 1 ?
11464: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
11465:
11466: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
11467: my $uhome=&homeserver($cnum,$cdom);
11468: my $iscourse;
11469: if (grep { $_ eq $uhome } current_machine_ids()) {
11470: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
11471: } else {
11472: my $hashid = $cdom.':'.$cnum;
11473: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
11474: unless (defined($cached)) {
11475: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
11476: $cnum,undef,undef,'.');
11477: $iscourse = 0;
11478: if (exists($courses{$cdom.'_'.$cnum})) {
11479: $iscourse = 1;
11480: }
11481: &do_cache_new('iscourse',$hashid,$iscourse,3600);
11482: }
11483: }
11484: return unless ($iscourse);
11485: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
11486: }
11487:
11488: sub store_userdata {
11489: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
11490: my $result;
11491: if ($datakey ne '') {
11492: if (ref($storehash) eq 'HASH') {
11493: if ($udom eq '' || $uname eq '') {
11494: $udom = $env{'user.domain'};
11495: $uname = $env{'user.name'};
11496: }
11497: my $uhome=&homeserver($uname,$udom);
11498: if (($uhome eq '') || ($uhome eq 'no_host')) {
11499: $result = 'error: no_host';
11500: } else {
11501: $storehash->{'ip'} = &get_requestor_ip();
11502: $storehash->{'host'} = $perlvar{'lonHostID'};
11503:
11504: my $namevalue='';
11505: foreach my $key (keys(%{$storehash})) {
11506: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
11507: }
11508: $namevalue=~s/\&$//;
11509: unless ($namespace eq 'courserequests') {
11510: $datakey = &escape($datakey);
11511: }
11512: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
11513: $namevalue,$uhome);
11514: }
11515: } else {
11516: $result = 'error: data to store was not a hash reference';
11517: }
11518: } else {
11519: $result= 'error: invalid requestkey';
11520: }
11521: return $result;
11522: }
11523:
11524: # ---------------------------------------------------------- Assign Custom Role
11525:
11526: sub assigncustomrole {
11527: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,
11528: $selfenroll,$context,$othdomby,$requester)=@_;
11529: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
11530: $end,$start,$deleteflag,$selfenroll,$context,$othdomby,
11531: $requester);
11532: }
11533:
11534: # ----------------------------------------------------------------- Revoke Role
11535:
11536: sub revokerole {
11537: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
11538: my $now=time;
11539: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
11540: }
11541:
11542: # ---------------------------------------------------------- Revoke Custom Role
11543:
11544: sub revokecustomrole {
11545: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
11546: my $now=time;
11547: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
11548: $deleteflag,$selfenroll,$context);
11549: }
11550:
11551: # ------------------------------------------------------------ Disk usage
11552: sub diskusage {
11553: my ($udom,$uname,$directorypath,$getpropath)=@_;
11554: $directorypath =~ s/\/$//;
11555: my $listing=&reply('du2:'.&escape($directorypath).':'
11556: .&escape($getpropath).':'.&escape($uname).':'
11557: .&escape($udom),homeserver($uname,$udom));
11558: if ($listing eq 'unknown_cmd') {
11559: if ($getpropath) {
11560: $directorypath = &propath($udom,$uname).'/'.$directorypath;
11561: }
11562: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
11563: }
11564: return $listing;
11565: }
11566:
11567: sub is_locked {
11568: my ($file_name, $domain, $user, $which) = @_;
11569: my @check;
11570: my $is_locked;
11571: push (@check,$file_name);
11572: my %locked = &get('file_permissions',\@check,
11573: $env{'user.domain'},$env{'user.name'});
11574: my ($tmp)=keys(%locked);
11575: if ($tmp=~/^error:/) { undef(%locked); }
11576:
11577: if (ref($locked{$file_name}) eq 'ARRAY') {
11578: $is_locked = 'false';
11579: foreach my $entry (@{$locked{$file_name}}) {
11580: if (ref($entry) eq 'ARRAY') {
11581: $is_locked = 'true';
11582: if (ref($which) eq 'ARRAY') {
11583: push(@{$which},$entry);
11584: } else {
11585: last;
11586: }
11587: }
11588: }
11589: } else {
11590: $is_locked = 'false';
11591: }
11592: return $is_locked;
11593: }
11594:
11595: sub declutter_portfile {
11596: my ($file) = @_;
11597: $file =~ s{^(/portfolio/|portfolio/)}{/};
11598: return $file;
11599: }
11600:
11601: # ------------------------------------------------------------- Mark as Read Only
11602:
11603: sub mark_as_readonly {
11604: my ($domain,$user,$files,$what) = @_;
11605: my %current_permissions = &dump('file_permissions',$domain,$user);
11606: my ($tmp)=keys(%current_permissions);
11607: if ($tmp=~/^error:/) { undef(%current_permissions); }
11608: foreach my $file (@{$files}) {
11609: $file = &declutter_portfile($file);
11610: push(@{$current_permissions{$file}},$what);
11611: }
11612: &put('file_permissions',\%current_permissions,$domain,$user);
11613: return;
11614: }
11615:
11616: # ------------------------------------------------------------Save Selected Files
11617:
11618: sub save_selected_files {
11619: my ($user, $path, @files) = @_;
11620: my $filename = $user."savedfiles";
11621: my @other_files = &files_not_in_path($user, $path);
11622: open (OUT,'>',LONCAPA::tempdir().$filename);
11623: foreach my $file (@files) {
11624: print (OUT $env{'form.currentpath'}.$file."\n");
11625: }
11626: foreach my $file (@other_files) {
11627: print (OUT $file."\n");
11628: }
11629: close (OUT);
11630: return 'ok';
11631: }
11632:
11633: sub clear_selected_files {
11634: my ($user) = @_;
11635: my $filename = $user."savedfiles";
11636: open (OUT,'>',LONCAPA::tempdir().$filename);
11637: print (OUT undef);
11638: close (OUT);
11639: return ("ok");
11640: }
11641:
11642: sub files_in_path {
11643: my ($user, $path) = @_;
11644: my $filename = $user."savedfiles";
11645: my %return_files;
11646: open (IN,'<',LONCAPA::tempdir().$filename);
11647: while (my $line_in = <IN>) {
11648: chomp ($line_in);
11649: my @paths_and_file = split (m!/!, $line_in);
11650: my $file_part = pop (@paths_and_file);
11651: my $path_part = join ('/', @paths_and_file);
11652: $path_part.='/';
11653: my $path_and_file = $path_part.$file_part;
11654: if ($path_part eq $path) {
11655: $return_files{$file_part}= 'selected';
11656: }
11657: }
11658: close (IN);
11659: return (\%return_files);
11660: }
11661:
11662: # called in portfolio select mode, to show files selected NOT in current directory
11663: sub files_not_in_path {
11664: my ($user, $path) = @_;
11665: my $filename = $user."savedfiles";
11666: my @return_files;
11667: my $path_part;
11668: open(IN, '<',LONCAPA::tempdir().$filename);
11669: while (my $line = <IN>) {
11670: #ok, I know it's clunky, but I want it to work
11671: my @paths_and_file = split(m|/|, $line);
11672: my $file_part = pop(@paths_and_file);
11673: chomp($file_part);
11674: my $path_part = join('/', @paths_and_file);
11675: $path_part .= '/';
11676: my $path_and_file = $path_part.$file_part;
11677: if ($path_part ne $path) {
11678: push(@return_files, ($path_and_file));
11679: }
11680: }
11681: close(OUT);
11682: return (@return_files);
11683: }
11684:
11685: #------------------------------Submitted/Handedback Portfolio Files Versioning
11686:
11687: sub portfiles_versioning {
11688: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11689: my $portfolio_root = '/userfiles/portfolio';
11690: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11691: foreach my $file (@{$portfiles}) {
11692: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11693: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11694: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11695: my $getpropath = 1;
11696: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11697: $stu_name,$getpropath);
11698: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11699: my $new_answer =
11700: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11701: if ($new_answer ne 'problem getting file') {
11702: push(@{$versioned_portfiles}, $directory.$new_answer);
11703: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11704: [$symb,$env{'request.course.id'},'graded']);
11705: }
11706: }
11707: }
11708:
11709: sub get_next_version {
11710: my ($answer_name, $answer_ext, $dir_list) = @_;
11711: my $version;
11712: if (ref($dir_list) eq 'ARRAY') {
11713: foreach my $row (@{$dir_list}) {
11714: my ($file) = split(/\&/,$row,2);
11715: my ($file_name,$file_version,$file_ext) =
11716: &file_name_version_ext($file);
11717: if (($file_name eq $answer_name) &&
11718: ($file_ext eq $answer_ext)) {
11719: # gets here if filename and extension match,
11720: # regardless of version
11721: if ($file_version ne '') {
11722: # a versioned file is found so save it for later
11723: if ($file_version > $version) {
11724: $version = $file_version;
11725: }
11726: }
11727: }
11728: }
11729: }
11730: $version ++;
11731: return($version);
11732: }
11733:
11734: sub version_selected_portfile {
11735: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11736: my ($answer_name,$answer_ver,$answer_ext) =
11737: &file_name_version_ext($file_name);
11738: my $new_answer;
11739: $env{'form.copy'} =
11740: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11741: if($env{'form.copy'} eq '-1') {
11742: $new_answer = 'problem getting file';
11743: } else {
11744: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11745: my $copy_result =
11746: &finishuserfileupload($stu_name,$domain,'copy',
11747: '/portfolio'.$directory.$new_answer);
11748: }
11749: undef($env{'form.copy'});
11750: return ($new_answer);
11751: }
11752:
11753: sub file_name_version_ext {
11754: my ($file)=@_;
11755: my @file_parts = split(/\./, $file);
11756: my ($name,$version,$ext);
11757: if (@file_parts > 1) {
11758: $ext=pop(@file_parts);
11759: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11760: $version=pop(@file_parts);
11761: }
11762: $name=join('.',@file_parts);
11763: } else {
11764: $name=join('.',@file_parts);
11765: }
11766: return($name,$version,$ext);
11767: }
11768:
11769: #----------------------------------------------Get portfolio file permissions
11770:
11771: sub get_portfile_permissions {
11772: my ($domain,$user) = @_;
11773: my %current_permissions = &dump('file_permissions',$domain,$user);
11774: my ($tmp)=keys(%current_permissions);
11775: if ($tmp=~/^error:/) { undef(%current_permissions); }
11776: return \%current_permissions;
11777: }
11778:
11779: #---------------------------------------------Get portfolio file access controls
11780:
11781: sub get_access_controls {
11782: my ($current_permissions,$group,$file) = @_;
11783: my %access;
11784: my $real_file = $file;
11785: $file =~ s/\.meta$//;
11786: if (defined($file)) {
11787: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11788: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11789: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11790: }
11791: }
11792: } else {
11793: foreach my $key (keys(%{$current_permissions})) {
11794: if ($key =~ /\0accesscontrol$/) {
11795: if (defined($group)) {
11796: if ($key !~ m-^\Q$group\E/-) {
11797: next;
11798: }
11799: }
11800: my ($fullpath) = split(/\0/,$key);
11801: if (ref($$current_permissions{$key}) eq 'HASH') {
11802: foreach my $control (keys(%{$$current_permissions{$key}})) {
11803: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11804: }
11805: }
11806: }
11807: }
11808: }
11809: return %access;
11810: }
11811:
11812: sub modify_access_controls {
11813: my ($file_name,$changes,$domain,$user)=@_;
11814: my ($outcome,$deloutcome);
11815: my %store_permissions;
11816: my %new_values;
11817: my %new_control;
11818: my %translation;
11819: my @deletions = ();
11820: my $now = time;
11821: if (exists($$changes{'activate'})) {
11822: if (ref($$changes{'activate'}) eq 'HASH') {
11823: my @newitems = sort(keys(%{$$changes{'activate'}}));
11824: my $numnew = scalar(@newitems);
11825: for (my $i=0; $i<$numnew; $i++) {
11826: my $newkey = $newitems[$i];
11827: my $newid = &Apache::loncommon::get_cgi_id();
11828: if ($newkey =~ /^\d+:/) {
11829: $newkey =~ s/^(\d+)/$newid/;
11830: $translation{$1} = $newid;
11831: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11832: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11833: $translation{$1} = $newid;
11834: }
11835: $new_values{$file_name."\0".$newkey} =
11836: $$changes{'activate'}{$newitems[$i]};
11837: $new_control{$newkey} = $now;
11838: }
11839: }
11840: }
11841: my %todelete;
11842: my %changed_items;
11843: foreach my $action ('delete','update') {
11844: if (exists($$changes{$action})) {
11845: if (ref($$changes{$action}) eq 'HASH') {
11846: foreach my $key (keys(%{$$changes{$action}})) {
11847: my ($itemnum) = ($key =~ /^([^:]+):/);
11848: if ($action eq 'delete') {
11849: $todelete{$itemnum} = 1;
11850: } else {
11851: $changed_items{$itemnum} = $key;
11852: }
11853: }
11854: }
11855: }
11856: }
11857: # get lock on access controls for file.
11858: my $lockhash = {
11859: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11860: ':'.$env{'user.domain'},
11861: };
11862: my $tries = 0;
11863: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11864:
11865: while (($gotlock ne 'ok') && $tries < 10) {
11866: $tries ++;
11867: sleep(0.1);
11868: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11869: }
11870: if ($gotlock eq 'ok') {
11871: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11872: my ($tmp)=keys(%curr_permissions);
11873: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11874: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11875: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11876: if (ref($curr_controls) eq 'HASH') {
11877: foreach my $control_item (keys(%{$curr_controls})) {
11878: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11879: if (defined($todelete{$itemnum})) {
11880: push(@deletions,$file_name."\0".$control_item);
11881: } else {
11882: if (defined($changed_items{$itemnum})) {
11883: $new_control{$changed_items{$itemnum}} = $now;
11884: push(@deletions,$file_name."\0".$control_item);
11885: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11886: } else {
11887: $new_control{$control_item} = $$curr_controls{$control_item};
11888: }
11889: }
11890: }
11891: }
11892: }
11893: my ($group);
11894: if (&is_course($domain,$user)) {
11895: ($group,my $file) = split(/\//,$file_name,2);
11896: }
11897: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11898: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11899: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11900: # remove lock
11901: my @del_lock = ($file_name."\0".'locked_access_records');
11902: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11903: my $sqlresult =
11904: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11905: $group);
11906: } else {
11907: $outcome = "error: could not obtain lockfile\n";
11908: }
11909: return ($outcome,$deloutcome,\%new_values,\%translation);
11910: }
11911:
11912: sub make_public_indefinitely {
11913: my (@requrl) = @_;
11914: return &automated_portfile_access('public',\@requrl);
11915: }
11916:
11917: sub automated_portfile_access {
11918: my ($accesstype,$addsref,$delsref,$info) = @_;
11919: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11920: return 'invalid';
11921: }
11922: my %urls;
11923: if (ref($addsref) eq 'ARRAY') {
11924: foreach my $requrl (@{$addsref}) {
11925: if (&is_portfolio_url($requrl)) {
11926: unless (exists($urls{$requrl})) {
11927: $urls{$requrl} = 'add';
11928: }
11929: }
11930: }
11931: }
11932: if (ref($delsref) eq 'ARRAY') {
11933: foreach my $requrl (@{$delsref}) {
11934: if (&is_portfolio_url($requrl)) {
11935: unless (exists($urls{$requrl})) {
11936: $urls{$requrl} = 'delete';
11937: }
11938: }
11939: }
11940: }
11941: unless (keys(%urls)) {
11942: return 'invalid';
11943: }
11944: my $ip;
11945: if ($accesstype eq 'ip') {
11946: if (ref($info) eq 'HASH') {
11947: if ($info->{'ip'} ne '') {
11948: $ip = $info->{'ip'};
11949: }
11950: }
11951: if ($ip eq '') {
11952: return 'invalid';
11953: }
11954: }
11955: my $errors;
11956: my $now = time;
11957: my %current_perms;
11958: foreach my $requrl (sort(keys(%urls))) {
11959: my $action;
11960: if ($urls{$requrl} eq 'add') {
11961: $action = 'activate';
11962: } else {
11963: $action = 'none';
11964: }
11965: my $aclnum = 0;
11966: my (undef,$udom,$unum,$file_name,$group) =
11967: &parse_portfolio_url($requrl);
11968: unless (exists($current_perms{$unum.':'.$udom})) {
11969: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11970: }
11971: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11972: $group,$file_name);
11973: foreach my $key (keys(%{$access_controls{$file_name}})) {
11974: my ($num,$scope,$end,$start) =
11975: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11976: if ($scope eq $accesstype) {
11977: if (($start <= $now) && ($end == 0)) {
11978: if ($accesstype eq 'ip') {
11979: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11980: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11981: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11982: if ($urls{$requrl} eq 'add') {
11983: $action = 'none';
11984: last;
11985: } else {
11986: $action = 'delete';
11987: $aclnum = $num;
11988: last;
11989: }
11990: }
11991: }
11992: }
11993: } elsif ($accesstype eq 'public') {
11994: if ($urls{$requrl} eq 'add') {
11995: $action = 'none';
11996: last;
11997: } else {
11998: $action = 'delete';
11999: $aclnum = $num;
12000: last;
12001: }
12002: }
12003: } elsif ($accesstype eq 'public') {
12004: $action = 'update';
12005: $aclnum = $num;
12006: last;
12007: }
12008: }
12009: }
12010: if ($action eq 'none') {
12011: next;
12012: } else {
12013: my %changes;
12014: my $newend = 0;
12015: my $newstart = $now;
12016: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
12017: $changes{$action}{$newkey} = {
12018: type => $accesstype,
12019: time => {
12020: start => $newstart,
12021: end => $newend,
12022: },
12023: };
12024: if ($accesstype eq 'ip') {
12025: $changes{$action}{$newkey}{'ip'} = [$ip];
12026: }
12027: my ($outcome,$deloutcome,$new_values,$translation) =
12028: &modify_access_controls($file_name,\%changes,$udom,$unum);
12029: unless ($outcome eq 'ok') {
12030: $errors .= $outcome.' ';
12031: }
12032: }
12033: }
12034: if ($errors) {
12035: $errors =~ s/\s$//;
12036: return $errors;
12037: } else {
12038: return 'ok';
12039: }
12040: }
12041:
12042: #------------------------------------------------------Get Marked as Read Only
12043:
12044: sub get_marked_as_readonly {
12045: my ($domain,$user,$what,$group) = @_;
12046: my $current_permissions = &get_portfile_permissions($domain,$user);
12047: my @readonly_files;
12048: my $cmp1=$what;
12049: if (ref($what)) { $cmp1=join('',@{$what}) };
12050: while (my ($file_name,$value) = each(%{$current_permissions})) {
12051: if (defined($group)) {
12052: if ($file_name !~ m-^\Q$group\E/-) {
12053: next;
12054: }
12055: }
12056: if (ref($value) eq "ARRAY"){
12057: foreach my $stored_what (@{$value}) {
12058: my $cmp2=$stored_what;
12059: if (ref($stored_what) eq 'ARRAY') {
12060: $cmp2=join('',@{$stored_what});
12061: }
12062: if ($cmp1 eq $cmp2) {
12063: push(@readonly_files, $file_name);
12064: last;
12065: } elsif (!defined($what)) {
12066: push(@readonly_files, $file_name);
12067: last;
12068: }
12069: }
12070: }
12071: }
12072: return @readonly_files;
12073: }
12074: #-----------------------------------------------------------Get Marked as Read Only Hash
12075:
12076: sub get_marked_as_readonly_hash {
12077: my ($current_permissions,$group,$what) = @_;
12078: my %readonly_files;
12079: while (my ($file_name,$value) = each(%{$current_permissions})) {
12080: if (defined($group)) {
12081: if ($file_name !~ m-^\Q$group\E/-) {
12082: next;
12083: }
12084: }
12085: if (ref($value) eq "ARRAY"){
12086: foreach my $stored_what (@{$value}) {
12087: if (ref($stored_what) eq 'ARRAY') {
12088: foreach my $lock_descriptor(@{$stored_what}) {
12089: if ($lock_descriptor eq 'graded') {
12090: $readonly_files{$file_name} = 'graded';
12091: } elsif ($lock_descriptor eq 'handback') {
12092: $readonly_files{$file_name} = 'handback';
12093: } else {
12094: if (!exists($readonly_files{$file_name})) {
12095: $readonly_files{$file_name} = 'locked';
12096: }
12097: }
12098: }
12099: }
12100: }
12101: }
12102: }
12103: return %readonly_files;
12104: }
12105: # ------------------------------------------------------------ Unmark as Read Only
12106:
12107: sub unmark_as_readonly {
12108: # unmarks $file_name (if $file_name is defined), or all files locked by $what
12109: # for portfolio submissions, $what contains [$symb,$crsid]
12110: my ($domain,$user,$what,$file_name,$group) = @_;
12111: $file_name = &declutter_portfile($file_name);
12112: my $symb_crs = $what;
12113: if (ref($what)) { $symb_crs=join('',@$what); }
12114: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
12115: my ($tmp)=keys(%current_permissions);
12116: if ($tmp=~/^error:/) { undef(%current_permissions); }
12117: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
12118: foreach my $file (@readonly_files) {
12119: my $clean_file = &declutter_portfile($file);
12120: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
12121: my $current_locks = $current_permissions{$file};
12122: my @new_locks;
12123: my @del_keys;
12124: if (ref($current_locks) eq "ARRAY"){
12125: foreach my $locker (@{$current_locks}) {
12126: my $compare=$locker;
12127: if (ref($locker) eq 'ARRAY') {
12128: $compare=join('',@{$locker});
12129: if ($compare ne $symb_crs) {
12130: push(@new_locks, $locker);
12131: }
12132: }
12133: }
12134: if (scalar(@new_locks) > 0) {
12135: $current_permissions{$file} = \@new_locks;
12136: } else {
12137: push(@del_keys, $file);
12138: &del('file_permissions',\@del_keys, $domain, $user);
12139: delete($current_permissions{$file});
12140: }
12141: }
12142: }
12143: &put('file_permissions',\%current_permissions,$domain,$user);
12144: return;
12145: }
12146:
12147: # ------------------------------------------------------------ Directory lister
12148:
12149: sub dirlist {
12150: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
12151: $uri=~s/^\///;
12152: $uri=~s/\/$//;
12153: my ($udom, $uname);
12154: if ($getuserdir) {
12155: $udom = $userdomain;
12156: $uname = $username;
12157: } else {
12158: (undef,$udom,$uname)=split(/\//,$uri);
12159: if(defined($userdomain)) {
12160: $udom = $userdomain;
12161: }
12162: if(defined($username)) {
12163: $uname = $username;
12164: }
12165: }
12166: my ($dirRoot,$listing,@listing_results);
12167:
12168: $dirRoot = $perlvar{'lonDocRoot'};
12169: if (defined($getpropath)) {
12170: $dirRoot = &propath($udom,$uname);
12171: $dirRoot =~ s/\/$//;
12172: } elsif (defined($getuserdir)) {
12173: my $subdir=$uname.'__';
12174: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
12175: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
12176: ."/$udom/$subdir/$uname";
12177: } elsif (defined($alternateRoot)) {
12178: $dirRoot = $alternateRoot;
12179: }
12180:
12181: if($udom) {
12182: if($uname) {
12183: my $uhome = &homeserver($uname,$udom);
12184: if ($uhome eq 'no_host') {
12185: return ([],'no_host');
12186: }
12187: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
12188: .$getuserdir.':'.&escape($dirRoot)
12189: .':'.&escape($uname).':'.&escape($udom),$uhome);
12190: if ($listing eq 'unknown_cmd') {
12191: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
12192: } else {
12193: @listing_results = map { &unescape($_); } split(/:/,$listing);
12194: }
12195: if ($listing eq 'unknown_cmd') {
12196: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
12197: @listing_results = split(/:/,$listing);
12198: } else {
12199: @listing_results = map { &unescape($_); } split(/:/,$listing);
12200: }
12201: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
12202: ($listing eq 'rejected') || ($listing eq 'refused') ||
12203: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
12204: return ([],$listing);
12205: } else {
12206: return (\@listing_results);
12207: }
12208: } elsif(!$alternateRoot) {
12209: my (%allusers,%listerror);
12210: my %servers = &get_servers($udom,'library');
12211: foreach my $tryserver (keys(%servers)) {
12212: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
12213: &escape($udom),$tryserver);
12214: if ($listing eq 'unknown_cmd') {
12215: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
12216: $udom, $tryserver);
12217: } else {
12218: @listing_results = map { &unescape($_); } split(/:/,$listing);
12219: }
12220: if ($listing eq 'unknown_cmd') {
12221: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
12222: $udom, $tryserver);
12223: @listing_results = split(/:/,$listing);
12224: } else {
12225: @listing_results =
12226: map { &unescape($_); } split(/:/,$listing);
12227: }
12228: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
12229: ($listing eq 'rejected') || ($listing eq 'refused') ||
12230: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
12231: $listerror{$tryserver} = $listing;
12232: } else {
12233: foreach my $line (@listing_results) {
12234: my ($entry) = split(/&/,$line,2);
12235: $allusers{$entry} = 1;
12236: }
12237: }
12238: }
12239: my @alluserslist=();
12240: foreach my $user (sort(keys(%allusers))) {
12241: push(@alluserslist,$user.'&user');
12242: }
12243:
12244: if (!%listerror) {
12245: # no errors
12246: return (\@alluserslist);
12247: } elsif (scalar(keys(%servers)) == 1) {
12248: # one library server, one error
12249: my ($key) = keys(%listerror);
12250: return (\@alluserslist, $listerror{$key});
12251: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
12252: # con_lost indicates that we might miss data from at least one
12253: # library server
12254: return (\@alluserslist, 'con_lost');
12255: } else {
12256: # multiple library servers and no con_lost -> data should be
12257: # complete.
12258: return (\@alluserslist);
12259: }
12260:
12261: } else {
12262: return ([],'missing username');
12263: }
12264: } elsif(!defined($getpropath)) {
12265: my $path = $perlvar{'lonDocRoot'}.'/res/';
12266: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
12267: return (\@all_domains);
12268: } else {
12269: return ([],'missing domain');
12270: }
12271: }
12272:
12273: # --------------------------------------------- GetFileTimestamp
12274: # This function utilizes dirlist and returns the date stamp for
12275: # when it was last modified. It will also return an error of -1
12276: # if an error occurs
12277:
12278: sub GetFileTimestamp {
12279: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
12280: $studentDomain = &LONCAPA::clean_domain($studentDomain);
12281: $studentName = &LONCAPA::clean_username($studentName);
12282: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
12283: undef,$getuserdir);
12284: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12285: return -1;
12286: }
12287: if (ref($fileref) eq 'ARRAY') {
12288: my @stats = split('&',$fileref->[0]);
12289: # @stats contains first the filename, then the stat output
12290: return $stats[10]; # so this is 10 instead of 9.
12291: } else {
12292: return -1;
12293: }
12294: }
12295:
12296: sub stat_file {
12297: my ($uri) = @_;
12298: $uri = &clutter_with_no_wrapper($uri);
12299:
12300: my ($udom,$uname,$file);
12301: if ($uri =~ m-^/(uploaded|editupload)/-) {
12302: ($udom,$uname,$file) =
12303: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
12304: $file = 'userfiles/'.$file;
12305: }
12306: if ($uri =~ m-^/res/-) {
12307: ($udom,$uname) =
12308: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
12309: $file = $uri;
12310: }
12311:
12312: if (!$udom || !$uname || !$file) {
12313: # unable to handle the uri
12314: return ();
12315: }
12316: my $getpropath;
12317: if ($file =~ /^userfiles\//) {
12318: $getpropath = 1;
12319: }
12320: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
12321: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12322: return ();
12323: } else {
12324: if (ref($listref) eq 'ARRAY') {
12325: my @stats = split('&',$listref->[0]);
12326: shift(@stats); #filename is first
12327: return @stats;
12328: }
12329: }
12330: return ();
12331: }
12332:
12333: # --------------------------------------------------------- recursedirs
12334: # Recursive function to traverse either a specific user's Authoring Space
12335: # or corresponding Published Resource Space, and populate the hash ref:
12336: # $dirhashref with URLs of all directories, and if $filehashref hash
12337: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
12338: # or .rights files in resource space, and .meta, .save, .log, .bak and
12339: # .rights files in Authoring Space.
12340: #
12341: # Inputs:
12342: #
12343: # $is_home - true if current server is home server for user's space
12344: # $recurse - if true will also traverse subdirectories recursively
12345: # $include - reference to hash containing allowed file extensions. If provided,
12346: # files which do not have a matching extension will be ignored.
12347: # $exclude - reference to hash containing excluded file extensions. If provided,
12348: # files which have a matching extension will be ignored.
12349: # $nonemptydir - if true, will only populate $fileshashref hash entry for a particular
12350: # directory with first file found (with acceptable extension).
12351: # $addtopdir - if true, set $dirhashref->{'/'} = 1
12352: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
12353: # $relpath - Current path (relative to top level).
12354: # $dirhashref - reference to hash to populate with URLs of directories (Required)
12355: # $filehashref - reference to hash to populate with URLs of files (Optional)
12356: #
12357: # Returns: nothing
12358: #
12359: # Side Effects: populates $dirhashref, and $filehashref (if provided).
12360: #
12361: # Currently used by interface/londocs.pm to create linked select boxes for
12362: # directory and filename to import a Course "Author" resource into a course, and
12363: # also to create linked select boxes for Authoring Space and Directory to choose
12364: # save location for creation of a new "standard" problem from the Course Editor.
12365: #
12366:
12367: sub recursedirs {
12368: my ($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$relpath,$dirhashref,$filehashref) = @_;
12369: return unless (ref($dirhashref) eq 'HASH');
12370: my $docroot = $perlvar{'lonDocRoot'};
12371: my $currpath = $docroot.$toppath;
12372: if ($relpath ne '') {
12373: $currpath .= "/$relpath";
12374: }
12375: my ($savefile,$checkinc,$checkexc);
12376: if (ref($filehashref)) {
12377: $savefile = 1;
12378: }
12379: if (ref($include) eq 'HASH') {
12380: $checkinc = 1;
12381: }
12382: if (ref($exclude) eq 'HASH') {
12383: $checkexc = 1;
12384: }
12385: if ($is_home) {
12386: if ((-e $currpath) && (opendir(my $dirh,$currpath))) {
12387: my $filecount = 0;
12388: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
12389: next if ($item eq '');
12390: if (-d "$currpath/$item") {
12391: my $newpath;
12392: if ($relpath ne '') {
12393: $newpath = "$relpath/$item";
12394: } else {
12395: $newpath = $item;
12396: }
12397: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12398: if ($recurse) {
12399: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12400: }
12401: } elsif (($savefile) || ($relpath eq '')) {
12402: next if ($nonemptydir && $filecount);
12403: if ($checkinc || $checkexc) {
12404: my ($extension) = ($item =~ /\.(\w+)$/);
12405: if ($checkinc) {
12406: next unless ($extension && $include->{$extension});
12407: }
12408: if ($checkexc) {
12409: next if ($extension && $exclude->{$extension});
12410: }
12411: }
12412: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12413: $dirhashref->{'/'} = 1;
12414: }
12415: if ($savefile) {
12416: if ($relpath eq '') {
12417: $filehashref->{'/'}{$item} = 1;
12418: } else {
12419: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12420: }
12421: }
12422: $filecount ++;
12423: }
12424: }
12425: closedir($dirh);
12426: }
12427: } else {
12428: my ($dirlistref,$listerror) =
12429: &dirlist($toppath.$relpath);
12430: my @dir_lines;
12431: my $dirptr=16384;
12432: if (ref($dirlistref) eq 'ARRAY') {
12433: my $filecount = 0;
12434: foreach my $dir_line (sort
12435: {
12436: my ($afile)=split('&',$a,2);
12437: my ($bfile)=split('&',$b,2);
12438: return (lc($afile) cmp lc($bfile));
12439: } (@{$dirlistref})) {
12440: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
12441: split(/\&/,$dir_line,16);
12442: $item =~ s/\s+$//;
12443: next if (($item =~ /^\.\.?$/) || ($obs));
12444: if ($dirptr&$testdir) {
12445: my $newpath;
12446: if ($relpath) {
12447: $newpath = "$relpath/$item";
12448: } else {
12449: $newpath = $item;
12450: }
12451: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12452: if ($recurse) {
12453: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12454: }
12455: } elsif (($savefile) || ($relpath eq '')) {
12456: next if ($nonemptydir && $filecount);
12457: if ($checkinc || $checkexc) {
12458: my $extension;
12459: if ($checkinc) {
12460: next unless ($extension && $include->{$extension});
12461: }
12462: if ($checkexc) {
12463: next if ($extension && $exclude->{$extension});
12464: }
12465: }
12466: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12467: $dirhashref->{'/'} = 1;
12468: }
12469: if ($savefile) {
12470: if ($relpath eq '') {
12471: $filehashref->{'/'}{$item} = 1;
12472: } else {
12473: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12474: }
12475: }
12476: $filecount ++;
12477: }
12478: }
12479: }
12480: }
12481: if ($addtopdir) {
12482: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12483: $dirhashref->{'/'} = 1;
12484: }
12485: }
12486: return;
12487: }
12488:
12489: sub priv_exclude {
12490: return {
12491: meta => 1,
12492: save => 1,
12493: log => 1,
12494: bak => 1,
12495: rights => 1,
12496: DS_Store => 1,
12497: };
12498: }
12499:
12500: # -------------------------------------------------------- Value of a Condition
12501:
12502: # gets the value of a specific preevaluated condition
12503: # stored in the string $env{user.state.<cid>}
12504: # or looks up a condition reference in the bighash and if if hasn't
12505: # already been evaluated recurses into docondval to get the value of
12506: # the condition, then memoizing it to
12507: # $env{user.state.<cid>.<condition>}
12508: sub directcondval {
12509: my $number=shift;
12510: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
12511: &Apache::lonuserstate::evalstate();
12512: }
12513: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
12514: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
12515: } elsif ($number =~ /^_/) {
12516: my $sub_condition;
12517: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12518: &GDBM_READER(),0640)) {
12519: $sub_condition=$bighash{'conditions'.$number};
12520: untie(%bighash);
12521: }
12522: my $value = &docondval($sub_condition);
12523: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
12524: return $value;
12525: }
12526: if ($env{'user.state.'.$env{'request.course.id'}}) {
12527: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
12528: } else {
12529: return 2;
12530: }
12531: }
12532:
12533: # get the collection of conditions for this resource
12534: sub condval {
12535: my $condidx=shift;
12536: my $allpathcond='';
12537: foreach my $cond (split(/\|/,$condidx)) {
12538: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
12539: $allpathcond.=
12540: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
12541: }
12542: }
12543: $allpathcond=~s/\|$//;
12544: return &docondval($allpathcond);
12545: }
12546:
12547: #evaluates an expression of conditions
12548: sub docondval {
12549: my ($allpathcond) = @_;
12550: my $result=0;
12551: if ($env{'request.course.id'}
12552: && defined($allpathcond)) {
12553: my $operand='|';
12554: my @stack;
12555: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
12556: if ($chunk eq '(') {
12557: push @stack,($operand,$result);
12558: } elsif ($chunk eq ')') {
12559: my $before=pop @stack;
12560: if (pop @stack eq '&') {
12561: $result=$result>$before?$before:$result;
12562: } else {
12563: $result=$result>$before?$result:$before;
12564: }
12565: } elsif (($chunk eq '&') || ($chunk eq '|')) {
12566: $operand=$chunk;
12567: } else {
12568: my $new=directcondval($chunk);
12569: if ($operand eq '&') {
12570: $result=$result>$new?$new:$result;
12571: } else {
12572: $result=$result>$new?$result:$new;
12573: }
12574: }
12575: }
12576: }
12577: return $result;
12578: }
12579:
12580: # ---------------------------------------------------- Devalidate courseresdata
12581:
12582: sub devalidatecourseresdata {
12583: my ($coursenum,$coursedomain)=@_;
12584: my $hashid=$coursenum.':'.$coursedomain;
12585: &devalidate_cache_new('courseres',$hashid);
12586: }
12587:
12588:
12589: # --------------------------------------------------- Course Resourcedata Query
12590: #
12591: # Parameters:
12592: # $coursenum - Number of the course.
12593: # $coursedomain - Domain at which the course was created.
12594: # Returns:
12595: # A hash of the course parameters along (I think) with timestamps
12596: # and version info.
12597:
12598: sub get_courseresdata {
12599: my ($coursenum,$coursedomain)=@_;
12600: my $coursehom=&homeserver($coursenum,$coursedomain);
12601: my $hashid=$coursenum.':'.$coursedomain;
12602: my ($result,$cached)=&is_cached_new('courseres',$hashid);
12603: my %dumpreply;
12604: unless (defined($cached)) {
12605: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
12606: $result=\%dumpreply;
12607: my ($tmp) = keys(%dumpreply);
12608: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12609: &do_cache_new('courseres',$hashid,$result,600);
12610: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
12611: return $tmp;
12612: } elsif ($tmp =~ /^(error)/) {
12613: $result=undef;
12614: &do_cache_new('courseres',$hashid,$result,600);
12615: }
12616: }
12617: return $result;
12618: }
12619:
12620: sub devalidateuserresdata {
12621: my ($uname,$udom)=@_;
12622: my $hashid="$udom:$uname";
12623: &devalidate_cache_new('userres',$hashid);
12624: }
12625:
12626: sub get_userresdata {
12627: my ($uname,$udom)=@_;
12628: #most student don\'t have any data set, check if there is some data
12629: if (&EXT_cache_status($udom,$uname)) { return undef; }
12630:
12631: my $hashid="$udom:$uname";
12632: my ($result,$cached)=&is_cached_new('userres',$hashid);
12633: if (!defined($cached)) {
12634: my %resourcedata=&dump('resourcedata',$udom,$uname);
12635: $result=\%resourcedata;
12636: &do_cache_new('userres',$hashid,$result,600);
12637: }
12638: my ($tmp)=keys(%$result);
12639: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
12640: return $result;
12641: }
12642: #error 2 occurs when the .db doesn't exist
12643: if ($tmp!~/error: 2 /) {
12644: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12645: &logthis("<font color=\"blue\">WARNING:".
12646: " Trying to get resource data for ".
12647: $uname." at ".$udom.": ".
12648: $tmp."</font>");
12649: }
12650: } elsif ($tmp=~/error: 2 /) {
12651: #&EXT_cache_set($udom,$uname);
12652: &do_cache_new('userres',$hashid,undef,600);
12653: undef($tmp); # not really an error so don't send it back
12654: }
12655: return $tmp;
12656: }
12657: #----------------------------------------------- resdata - return resource data
12658: # Purpose:
12659: # Return resource data for either users or for a course.
12660: # Parameters:
12661: # $name - Course/user name.
12662: # $domain - Name of the domain the user/course is registered on.
12663: # $type - Type of thing $name is (must be 'course' or 'user')
12664: # $mapp - decluttered URL of enclosing map
12665: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12666: # $recurseup - Ref to array of map URLs, starting with map containing
12667: # $mapp up through hierarchy of nested maps to top level map.
12668: # $courseid - CourseID (first part of param identifier).
12669: # $modifier - Middle part of param identifier.
12670: # $what - Last part of param identifier.
12671: # @which - Array of names of resources desired.
12672: # Returns:
12673: # The value of the first reasource in @which that is found in the
12674: # resource hash.
12675: # Exceptional Conditions:
12676: # If the $type passed in is not valid (not the string 'course' or
12677: # 'user', an undefined reference is returned.
12678: # If none of the resources are found, an undef is returned
12679: sub resdata {
12680: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12681: $modifier,$what,@which)=@_;
12682: my $result;
12683: if ($type eq 'course') {
12684: $result=&get_courseresdata($name,$domain);
12685: } elsif ($type eq 'user') {
12686: $result=&get_userresdata($name,$domain);
12687: }
12688: if (!ref($result)) { return $result; }
12689: foreach my $item (@which) {
12690: if ($item->[1] eq 'course') {
12691: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12692: unless ($$recursed) {
12693: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12694: $$recursed = 1;
12695: }
12696: foreach my $item (@${recurseup}) {
12697: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12698: last if (defined($result->{$norecursechk}));
12699: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12700: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12701: }
12702: }
12703: }
12704: if (defined($result->{$item->[0]})) {
12705: return [$result->{$item->[0]},$item->[1]];
12706: }
12707: }
12708: return undef;
12709: }
12710:
12711: sub get_domain_lti {
12712: my ($cdom,$context) = @_;
12713: my ($name,$cachename,%lti);
12714: if ($context eq 'consumer') {
12715: $name = 'ltitools';
12716: } elsif ($context eq 'provider') {
12717: $name = 'lti';
12718: } elsif ($context eq 'linkprot') {
12719: $name = 'ltisec';
12720: } else {
12721: return %lti;
12722: }
12723: if ($context eq 'linkprot') {
12724: $cachename = $context;
12725: } else {
12726: $cachename = $name;
12727: }
12728: my ($result,$cached)=&is_cached_new($cachename,$cdom);
12729: if (defined($cached)) {
12730: if (ref($result) eq 'HASH') {
12731: %lti = %{$result};
12732: }
12733: } else {
12734: my %domconfig = &get_dom('configuration',[$name],$cdom);
12735: if (ref($domconfig{$name}) eq 'HASH') {
12736: if ($context eq 'linkprot') {
12737: if (ref($domconfig{$name}{'linkprot'}) eq 'HASH') {
12738: %lti = %{$domconfig{$name}{'linkprot'}};
12739: }
12740: } else {
12741: %lti = %{$domconfig{$name}};
12742: }
12743: }
12744: my $cachetime = 24*60*60;
12745: &do_cache_new($cachename,$cdom,\%lti,$cachetime);
12746: }
12747: return %lti;
12748: }
12749:
12750: sub get_course_lti {
12751: my ($cnum,$cdom,$context) = @_;
12752: my ($name,$cachename,%lti);
12753: if ($context eq 'consumer') {
12754: $name = 'ltitools';
12755: $cachename = 'courseltitools';
12756: } elsif ($context eq 'provider') {
12757: $name = 'lti';
12758: $cachename = 'courselti';
12759: } else {
12760: return %lti;
12761: }
12762: my $hashid=$cdom.'_'.$cnum;
12763: my ($result,$cached)=&is_cached_new($cachename,$hashid);
12764: if (defined($cached)) {
12765: if (ref($result) eq 'HASH') {
12766: %lti = %{$result};
12767: }
12768: } else {
12769: %lti = &dump($name,$cdom,$cnum,undef,undef,undef,1);
12770: my $cachetime = 24*60*60;
12771: &do_cache_new($cachename,$hashid,\%lti,$cachetime);
12772: }
12773: return %lti;
12774: }
12775:
12776: sub courselti_itemid {
12777: my ($cnum,$cdom,$url,$method,$params,$context) = @_;
12778: my ($chome,$itemid);
12779: $chome = &homeserver($cnum,$cdom);
12780: return if ($chome eq 'no_host');
12781: if (ref($params) eq 'HASH') {
12782: my $rep;
12783: if (grep { $_ eq $chome } current_machine_ids()) {
12784: $rep = LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
12785: } else {
12786: my $escurl = &escape($url);
12787: my $escmethod = &escape($method);
12788: my $items = &freeze_escape($params);
12789: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$chome);
12790: }
12791: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12792: ($rep eq 'unknown_cmd')) {
12793: $itemid = $rep;
12794: }
12795: }
12796: return $itemid;
12797: }
12798:
12799: sub domainlti_itemid {
12800: my ($cdom,$url,$method,$params,$context) = @_;
12801: my ($primary_id,$itemid);
12802: $primary_id = &domain($cdom,'primary');
12803: return if ($primary_id eq '');
12804: if (ref($params) eq 'HASH') {
12805: my $rep;
12806: if (grep { $_ eq $primary_id } current_machine_ids()) {
12807: $rep = LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
12808: } else {
12809: my $cnum = '';
12810: my $escurl = &escape($url);
12811: my $escmethod = &escape($method);
12812: my $items = &freeze_escape($params);
12813: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$primary_id);
12814: }
12815: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12816: ($rep eq 'unknown_cmd')) {
12817: $itemid = $rep;
12818: }
12819: }
12820: return $itemid;
12821: }
12822:
12823: sub get_ltitools_id {
12824: my ($context,$cdom,$cnum,$title) = @_;
12825: my ($lockhash,$tries,$gotlock,$id,$error);
12826:
12827: # get lock on ltitools db
12828: $lockhash = {
12829: lock => $env{'user.name'}.
12830: ':'.$env{'user.domain'},
12831: };
12832: $tries = 0;
12833: if ($context eq 'domain') {
12834: $gotlock = &newput_dom('ltitools',$lockhash,$cdom);
12835: } else {
12836: $gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
12837: }
12838: while (($gotlock ne 'ok') && ($tries<10)) {
12839: $tries ++;
12840: sleep (0.1);
12841: if ($context eq 'domain') {
12842: $gotlock = &newput_dom('ltitools',$lockhash,$cdom);
12843: } else {
12844: $gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
12845: }
12846: }
12847: if ($gotlock eq 'ok') {
12848: my %currids;
12849: if ($context eq 'domain') {
12850: %currids = &dump_dom('ltitools',$cdom);
12851: } else {
12852: %currids = &dump('ltitools',$cdom,$cnum);
12853: }
12854: if ($currids{'lock'}) {
12855: delete($currids{'lock'});
12856: if (keys(%currids)) {
12857: my @curr = sort { $a <=> $b } keys(%currids);
12858: if ($curr[-1] =~ /^\d+$/) {
12859: $id = 1 + $curr[-1];
12860: }
12861: } else {
12862: $id = 1;
12863: }
12864: if ($id) {
12865: if ($context eq 'domain') {
12866: unless (&newput_dom('ltitools',{ $id => $title },$cdom) eq 'ok') {
12867: $error = 'nostore';
12868: }
12869: } else {
12870: unless (&newput('ltitools',{ $id => $title },$cdom,$cnum) eq 'ok') {
12871: $error = 'nostore';
12872: }
12873: }
12874: } else {
12875: $error = 'nonumber';
12876: }
12877: }
12878: my $dellockoutcome;
12879: if ($context eq 'domain') {
12880: $dellockoutcome = &del_dom('ltitools',['lock'],$cdom);
12881: } else {
12882: $dellockoutcome = &del('ltitools',['lock'],$cdom,$cnum);
12883: }
12884: } else {
12885: $error = 'nolock';
12886: }
12887: return ($id,$error);
12888: }
12889:
12890: sub count_supptools {
12891: my ($cnum,$cdom,$ignorecache,$reload)=@_;
12892: my $hashid=$cnum.':'.$cdom;
12893: my ($numexttools,$cached);
12894: unless ($ignorecache) {
12895: ($numexttools,$cached) = &is_cached_new('supptools',$hashid);
12896: }
12897: unless (defined($cached)) {
12898: my $chome=&homeserver($cnum,$cdom);
12899: $numexttools = 0;
12900: unless ($chome eq 'no_host') {
12901: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$reload);
12902: if (ref($supplemental) eq 'HASH') {
12903: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
12904: foreach my $key (keys(%{$supplemental->{'ids'}})) {
12905: if ($key =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
12906: $numexttools ++;
12907: }
12908: }
12909: }
12910: }
12911: }
12912: &do_cache_new('supptools',$hashid,$numexttools,600);
12913: }
12914: return $numexttools;
12915: }
12916:
12917: sub has_unhidden_suppfiles {
12918: my ($cnum,$cdom,$ignorecache,$possdel)=@_;
12919: my $hashid=$cnum.':'.$cdom;
12920: my ($showsupp,$cached);
12921: unless ($ignorecache) {
12922: ($showsupp,$cached) = &is_cached_new('showsupp',$hashid);
12923: }
12924: unless (defined($cached)) {
12925: my $chome=&homeserver($cnum,$cdom);
12926: unless ($chome eq 'no_host') {
12927: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$ignorecache,$possdel);
12928: if (ref($supplemental) eq 'HASH') {
12929: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
12930: foreach my $key (keys(%{$supplemental->{'ids'}})) {
12931: next if ($key =~ /\.sequence$/);
12932: if (ref($supplemental->{'ids'}->{$key}) eq 'ARRAY') {
12933: foreach my $id (@{$supplemental->{'ids'}->{$key}}) {
12934: unless ($supplemental->{'hidden'}->{$id}) {
12935: $showsupp = 1;
12936: last;
12937: }
12938: }
12939: }
12940: last if ($showsupp);
12941: }
12942: }
12943: }
12944: }
12945: &do_cache_new('showsupp',$hashid,$showsupp,600);
12946: }
12947: return $showsupp;
12948: }
12949:
12950: #
12951: # EXT resource caching routines
12952: #
12953:
12954: {
12955: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
12956: #
12957: # The course for which we cache
12958: my $cachedmapkey='';
12959: # The cached recursive maps for this course
12960: my %cachedmaps=();
12961: # When this was last done
12962: my $cachedmaptime='';
12963:
12964: sub clear_EXT_cache_status {
12965: &delenv('cache.EXT.');
12966: }
12967:
12968: sub EXT_cache_status {
12969: my ($target_domain,$target_user) = @_;
12970: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12971: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12972: # We know already the user has no data
12973: return 1;
12974: } else {
12975: return 0;
12976: }
12977: }
12978:
12979: sub EXT_cache_set {
12980: my ($target_domain,$target_user) = @_;
12981: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12982: #&appenv({$cachename => time});
12983: }
12984:
12985: # --------------------------------------------------------- Value of a Variable
12986: sub EXT {
12987:
12988: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
12989: unless ($varname) { return ''; }
12990: #get real user name/domain, courseid and symb
12991: my $courseid;
12992: my $publicuser;
12993: if ($symbparm) {
12994: $symbparm=&get_symb_from_alias($symbparm);
12995: }
12996: if (!($uname && $udom)) {
12997: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12998: if (!$symbparm) { $symbparm=$cursymb; }
12999: } else {
13000: $courseid=$env{'request.course.id'};
13001: }
13002: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
13003: my $rest;
13004: if (defined($therest[0])) {
13005: $rest=join('.',@therest);
13006: } else {
13007: $rest='';
13008: }
13009:
13010: my $qualifierrest=$qualifier;
13011: if ($rest) { $qualifierrest.='.'.$rest; }
13012: my $spacequalifierrest=$space;
13013: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
13014: if ($realm eq 'user') {
13015: # --------------------------------------------------------------- user.resource
13016: if ($space eq 'resource') {
13017: if ( (defined($Apache::lonhomework::parsing_a_problem)
13018: || defined($Apache::lonhomework::parsing_a_task))
13019: &&
13020: ($symbparm eq &symbread()) ) {
13021: # if we are in the middle of processing the resource the
13022: # get the value we are planning on committing
13023: if (defined($Apache::lonhomework::results{$qualifierrest})) {
13024: return $Apache::lonhomework::results{$qualifierrest};
13025: } else {
13026: return $Apache::lonhomework::history{$qualifierrest};
13027: }
13028: } else {
13029: my %restored;
13030: if ($publicuser || $env{'request.state'} eq 'construct') {
13031: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
13032: } else {
13033: %restored=&restore($symbparm,$courseid,$udom,$uname);
13034: }
13035: return $restored{$qualifierrest};
13036: }
13037: # ----------------------------------------------------------------- user.access
13038: } elsif ($space eq 'access') {
13039: # FIXME - not supporting calls for a specific user
13040: return &allowed($qualifier,$rest);
13041: # ------------------------------------------ user.preferences, user.environment
13042: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
13043: if (($uname eq $env{'user.name'}) &&
13044: ($udom eq $env{'user.domain'})) {
13045: return $env{join('.',('environment',$qualifierrest))};
13046: } else {
13047: my %returnhash;
13048: if (!$publicuser) {
13049: %returnhash=&userenvironment($udom,$uname,
13050: $qualifierrest);
13051: }
13052: return $returnhash{$qualifierrest};
13053: }
13054: # ----------------------------------------------------------------- user.course
13055: } elsif ($space eq 'course') {
13056: # FIXME - not supporting calls for a specific user
13057: return $env{join('.',('request.course',$qualifier))};
13058: # ------------------------------------------------------------------- user.role
13059: } elsif ($space eq 'role') {
13060: # FIXME - not supporting calls for a specific user
13061: my ($role,$where)=split(/\./,$env{'request.role'});
13062: if ($qualifier eq 'value') {
13063: return $role;
13064: } elsif ($qualifier eq 'extent') {
13065: return $where;
13066: }
13067: # ----------------------------------------------------------------- user.domain
13068: } elsif ($space eq 'domain') {
13069: return $udom;
13070: # ------------------------------------------------------------------- user.name
13071: } elsif ($space eq 'name') {
13072: return $uname;
13073: # ---------------------------------------------------- Any other user namespace
13074: } else {
13075: my %reply;
13076: if (!$publicuser) {
13077: %reply=&get($space,[$qualifierrest],$udom,$uname);
13078: }
13079: return $reply{$qualifierrest};
13080: }
13081: } elsif ($realm eq 'query') {
13082: # ---------------------------------------------- pull stuff out of query string
13083: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
13084: [$spacequalifierrest]);
13085: return $env{'form.'.$spacequalifierrest};
13086: } elsif ($realm eq 'request') {
13087: # ------------------------------------------------------------- request.browser
13088: if ($space eq 'browser') {
13089: return $env{'browser.'.$qualifier};
13090: # ------------------------------------------------------------ request.filename
13091: } else {
13092: return $env{'request.'.$spacequalifierrest};
13093: }
13094: } elsif ($realm eq 'course') {
13095: # ---------------------------------------------------------- course.description
13096: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
13097: } elsif ($realm eq 'resource') {
13098:
13099: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
13100: if (!$symbparm) { $symbparm=&symbread(); }
13101: }
13102:
13103: if ($qualifier eq '') {
13104: if ($space eq 'title') {
13105: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
13106: return &gettitle($symbparm);
13107: }
13108:
13109: if ($space eq 'map') {
13110: my ($map) = &decode_symb($symbparm);
13111: return &symbread($map);
13112: }
13113: if ($space eq 'maptitle') {
13114: my ($map) = &decode_symb($symbparm);
13115: return &gettitle($map);
13116: }
13117: if ($space eq 'filename') {
13118: if ($symbparm) {
13119: return &clutter((&decode_symb($symbparm))[2]);
13120: }
13121: return &hreflocation('',$env{'request.filename'});
13122: }
13123:
13124: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
13125: if ($space eq 'visibleparts') {
13126: my $navmap = Apache::lonnavmaps::navmap->new();
13127: my $item;
13128: if (ref($navmap)) {
13129: my $res = $navmap->getBySymb($symbparm);
13130: my $parts = $res->parts();
13131: if (ref($parts) eq 'ARRAY') {
13132: $item = join(',',@{$parts});
13133: }
13134: undef($navmap);
13135: }
13136: return $item;
13137: }
13138: }
13139: }
13140:
13141: my ($section, $group, @groups, @recurseup, $recursed);
13142: if (ref($recurseupref) eq 'ARRAY') {
13143: @recurseup = @{$recurseupref};
13144: $recursed = 1;
13145: }
13146: my ($courselevelm,$courseleveli,$courselevel,$mapp);
13147: if (($courseid eq '') && ($cid)) {
13148: $courseid = $cid;
13149: }
13150: if (($symbparm && $courseid) &&
13151: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
13152:
13153: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
13154:
13155: # ----------------------------------------------------- Cascading lookup scheme
13156: my $symbp=$symbparm;
13157: $mapp=&deversion((&decode_symb($symbp))[0]);
13158: my $symbparm=$symbp.'.'.$spacequalifierrest;
13159: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
13160: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
13161: if (($env{'user.name'} eq $uname) &&
13162: ($env{'user.domain'} eq $udom)) {
13163: $section=$env{'request.course.sec'};
13164: @groups = split(/:/,$env{'request.course.groups'});
13165: @groups=&sort_course_groups($courseid,@groups);
13166: } else {
13167: if (! defined($usection)) {
13168: $section=&getsection($udom,$uname,$courseid);
13169: } else {
13170: $section = $usection;
13171: }
13172: @groups = &get_users_groups($udom,$uname,$courseid);
13173: }
13174:
13175: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
13176: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
13177: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
13178: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
13179:
13180: $courselevel=$courseid.'.'.$spacequalifierrest;
13181: my $courselevelr=$courseid.'.'.$symbparm;
13182: $courseleveli=$courseid.'.'.$recurseparm;
13183: $courselevelm=$courseid.'.'.$mapparm;
13184:
13185: # ----------------------------------------------------------- first, check user
13186:
13187: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
13188: \@recurseup,$courseid,'.',$spacequalifierrest,
13189: ([$courselevelr,'resource'],
13190: [$courselevelm,'map' ],
13191: [$courseleveli,'map' ],
13192: [$courselevel, 'course' ]));
13193: if (defined($userreply)) { return &get_reply($userreply); }
13194:
13195: # ------------------------------------------------ second, check some of course
13196: my $coursereply;
13197: if (@groups > 0) {
13198: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
13199: $recurseparm,$mapparm,$spacequalifierrest,
13200: $mapp,\$recursed,\@recurseup);
13201: if (defined($coursereply)) { return &get_reply($coursereply); }
13202: }
13203:
13204: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
13205: $env{'course.'.$courseid.'.domain'},
13206: 'course',$mapp,\$recursed,\@recurseup,
13207: $courseid,'.['.$section.'].',$spacequalifierrest,
13208: ([$seclevelr, 'resource'],
13209: [$seclevelm, 'map' ],
13210: [$secleveli, 'map' ],
13211: [$seclevel, 'course' ],
13212: [$courselevelr,'resource']));
13213: if (defined($coursereply)) { return &get_reply($coursereply); }
13214:
13215: # ------------------------------------------------------ third, check map parms
13216: my %parmhash=();
13217: my $thisparm='';
13218: if (tie(%parmhash,'GDBM_File',
13219: $env{'request.course.fn'}.'_parms.db',
13220: &GDBM_READER(),0640)) {
13221: $thisparm=$parmhash{$symbparm};
13222: untie(%parmhash);
13223: }
13224: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
13225: }
13226: # ------------------------------------------ fourth, look in resource metadata
13227:
13228: my $what = $spacequalifierrest;
13229: $what=~s/\./\_/;
13230: my $filename;
13231: if (!$symbparm) { $symbparm=&symbread(); }
13232: if ($symbparm) {
13233: $filename=(&decode_symb($symbparm))[2];
13234: } else {
13235: $filename=$env{'request.filename'};
13236: }
13237: my $toolsymb;
13238: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
13239: $toolsymb = $symbparm;
13240: }
13241: my $metadata=&metadata($filename,$what,$toolsymb);
13242: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
13243: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
13244: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
13245:
13246: # ----------------------------------------------- fifth, look in rest of course
13247: if ($symbparm && defined($courseid) &&
13248: $courseid eq $env{'request.course.id'}) {
13249: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
13250: $env{'course.'.$courseid.'.domain'},
13251: 'course',$mapp,\$recursed,\@recurseup,
13252: $courseid,'.',$spacequalifierrest,
13253: ([$courselevelm,'map' ],
13254: [$courseleveli,'map' ],
13255: [$courselevel, 'course']));
13256: if (defined($coursereply)) { return &get_reply($coursereply); }
13257: }
13258: # ------------------------------------------------------------------ Cascade up
13259: unless ($space eq '0') {
13260: my @parts=split(/_/,$space);
13261: my $id=pop(@parts);
13262: my $part=join('_',@parts);
13263: if ($part eq '') { $part='0'; }
13264: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
13265: $symbparm,$udom,$uname,$section,1);
13266: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
13267: }
13268: if ($recurse) { return undef; }
13269: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
13270: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
13271: # ---------------------------------------------------- Any other user namespace
13272: } elsif ($realm eq 'environment') {
13273: # ----------------------------------------------------------------- environment
13274: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
13275: return $env{'environment.'.$spacequalifierrest};
13276: } else {
13277: if ($uname eq 'anonymous' && $udom eq '') {
13278: return '';
13279: }
13280: my %returnhash=&userenvironment($udom,$uname,
13281: $spacequalifierrest);
13282: return $returnhash{$spacequalifierrest};
13283: }
13284: } elsif ($realm eq 'system') {
13285: # ----------------------------------------------------------------- system.time
13286: if ($space eq 'time') {
13287: return time;
13288: }
13289: } elsif ($realm eq 'server') {
13290: # ----------------------------------------------------------------- system.time
13291: if ($space eq 'name') {
13292: return $ENV{'SERVER_NAME'};
13293: }
13294: } elsif ($realm eq 'client') {
13295: if ($space eq 'remote_addr') {
13296: return &get_requestor_ip();
13297: }
13298: }
13299: return '';
13300: }
13301:
13302: sub get_reply {
13303: my ($reply_value) = @_;
13304: if (ref($reply_value) eq 'ARRAY') {
13305: if (wantarray) {
13306: return @$reply_value;
13307: }
13308: return $reply_value->[0];
13309: } else {
13310: return $reply_value;
13311: }
13312: }
13313:
13314: sub check_group_parms {
13315: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
13316: $recursed,$recurseupref) = @_;
13317: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
13318: [$what,'course']);
13319: my $coursereply;
13320: foreach my $group (@{$groups}) {
13321: my @groupitems = ();
13322: foreach my $level (@levels) {
13323: my $item = $courseid.'.['.$group.'].'.$level->[0];
13324: push(@groupitems,[$item,$level->[1]]);
13325: }
13326: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
13327: $env{'course.'.$courseid.'.domain'},
13328: 'course',$mapp,$recursed,$recurseupref,
13329: $courseid,'.['.$group.'].',$what,
13330: @groupitems);
13331: last if (defined($coursereply));
13332: }
13333: return $coursereply;
13334: }
13335:
13336: sub get_map_hierarchy {
13337: my ($mapname,$courseid) = @_;
13338: my @recurseup = ();
13339: if ($mapname) {
13340: if (($cachedmapkey eq $courseid) &&
13341: (abs($cachedmaptime-time)<5)) {
13342: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
13343: return @{$cachedmaps{$mapname}};
13344: }
13345: }
13346: my $navmap = Apache::lonnavmaps::navmap->new();
13347: if (ref($navmap)) {
13348: @recurseup = $navmap->recurseup_maps($mapname);
13349: undef($navmap);
13350: $cachedmaps{$mapname} = \@recurseup;
13351: $cachedmaptime=time;
13352: $cachedmapkey=$courseid;
13353: }
13354: }
13355: return @recurseup;
13356: }
13357:
13358: }
13359:
13360: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
13361: my ($courseid,@groups) = @_;
13362: @groups = sort(@groups);
13363: return @groups;
13364: }
13365:
13366: sub packages_tab_default {
13367: my ($uri,$varname,$toolsymb)=@_;
13368: my (undef,$part,$name)=split(/\./,$varname);
13369:
13370: my (@extension,@specifics,$do_default);
13371: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
13372: my ($pack_type,$pack_part)=split(/_/,$package,2);
13373: if ($pack_type eq 'default') {
13374: $do_default=1;
13375: } elsif ($pack_type eq 'extension') {
13376: push(@extension,[$package,$pack_type,$pack_part]);
13377: } elsif ($pack_part eq $part || $pack_type eq 'part') {
13378: # only look at packages defaults for packages that this id is
13379: push(@specifics,[$package,$pack_type,$pack_part]);
13380: }
13381: }
13382: # first look for a package that matches the requested part id
13383: foreach my $package (@specifics) {
13384: my (undef,$pack_type,$pack_part)=@{$package};
13385: next if ($pack_part ne $part);
13386: if (defined($packagetab{"$pack_type&$name&default"})) {
13387: return $packagetab{"$pack_type&$name&default"};
13388: }
13389: }
13390: # look for any possible matching non extension_ package
13391: foreach my $package (@specifics) {
13392: my (undef,$pack_type,$pack_part)=@{$package};
13393: if (defined($packagetab{"$pack_type&$name&default"})) {
13394: return $packagetab{"$pack_type&$name&default"};
13395: }
13396: if ($pack_type eq 'part') { $pack_part='0'; }
13397: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
13398: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
13399: }
13400: }
13401: # look for any posible extension_ match
13402: foreach my $package (@extension) {
13403: my ($package,$pack_type)=@{$package};
13404: if (defined($packagetab{"$pack_type&$name&default"})) {
13405: return $packagetab{"$pack_type&$name&default"};
13406: }
13407: if (defined($packagetab{$package."&$name&default"})) {
13408: return $packagetab{$package."&$name&default"};
13409: }
13410: }
13411: # look for a global default setting
13412: if ($do_default && defined($packagetab{"default&$name&default"})) {
13413: return $packagetab{"default&$name&default"};
13414: }
13415: return undef;
13416: }
13417:
13418: sub add_prefix_and_part {
13419: my ($prefix,$part)=@_;
13420: my $keyroot;
13421: if (defined($prefix) && $prefix !~ /^__/) {
13422: # prefix that has a part already
13423: $keyroot=$prefix;
13424: } elsif (defined($prefix)) {
13425: # prefix that is missing a part
13426: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
13427: } else {
13428: # no prefix at all
13429: if (defined($part)) { $keyroot='_'.$part; }
13430: }
13431: return $keyroot;
13432: }
13433:
13434: # ---------------------------------------------------------------- Get metadata
13435:
13436: my %metaentry;
13437: my %importedpartids;
13438: my %importedrespids;
13439: sub metadata {
13440: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
13441: $uri=&declutter($uri);
13442: # if it is a non metadata possible uri return quickly
13443: if (($uri eq '') ||
13444: (($uri =~ m|^/*adm/|) &&
13445: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
13446: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
13447: return undef;
13448: }
13449: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
13450: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
13451: return undef;
13452: }
13453: my $filename=$uri;
13454: $uri=~s/\.meta$//;
13455: #
13456: # Is the metadata already cached?
13457: # Look at timestamp of caching
13458: # Everything is cached by the main uri, libraries are never directly cached
13459: #
13460: if (!defined($liburi)) {
13461: my ($result,$cached)=&is_cached_new('meta',$uri);
13462: if (defined($cached)) { return $result->{':'.$what}; }
13463: }
13464:
13465: #
13466: # If the uri is for an external tool the file from
13467: # which metadata should be retrieved depends on whether
13468: # the tool had been configured to be gradable (set in the Course
13469: # Editor or Resource Editor).
13470: #
13471: # If a valid symb has been included as the third arg in the call
13472: # to &metadata() that can be used to retrieve the value of
13473: # parameter_0_gradable set for the resource, and included in the
13474: # uploaded map containing the tool. The value is retrieved via
13475: # &EXT(), if a valid symb is available. Otherwise the value of
13476: # gradable in the exttool_$marker.db file for the tool instance
13477: # is retrieved via &get().
13478: #
13479: # When lonuserstate::traceroute() calls lonnet::EXT() for
13480: # hiddenresource and encrypturl (during course initialization)
13481: # the map-level parameter for resource.0.gradable included in the
13482: # uploaded map containing the tool will not yet have been stored
13483: # in the user_course_parms.db file for the user's session, so in
13484: # this case fall back to retrieving gradable status from the
13485: # exttool_$marker.db file.
13486: #
13487: # In order to avoid an infinite loop, &metadata() will return
13488: # before a call to &EXT(), if the uri is for an external tool
13489: # and the $what for which metadata is being requested is
13490: # parameter_0_gradable or 0_gradable.
13491: #
13492:
13493: if ($uri =~ /ext\.tool$/) {
13494: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
13495: return;
13496: } else {
13497: my ($checked,$use_passback);
13498: if ($toolsymb ne '') {
13499: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
13500: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
13501: $checked = 1;
13502: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
13503: $use_passback = 1;
13504: }
13505: }
13506: }
13507: unless ($checked) {
13508: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
13509: $marker=~s/\D//g;
13510: if ($marker) {
13511: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
13512: $use_passback = $toolsettings{'gradable'};
13513: }
13514: }
13515: if ($use_passback) {
13516: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
13517: } else {
13518: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
13519: }
13520: }
13521: }
13522:
13523: {
13524: # Imported parts would go here
13525: my @origfiletagids=();
13526: my $importedparts=0;
13527:
13528: # Imported responseids would go here
13529: my $importedresponses=0;
13530: #
13531: # Is this a recursive call for a library?
13532: #
13533: # if (! exists($metacache{$uri})) {
13534: # $metacache{$uri}={};
13535: # }
13536: my $cachetime = 60*60;
13537: if ($liburi) {
13538: $liburi=&declutter($liburi);
13539: $filename=$liburi;
13540: } else {
13541: &devalidate_cache_new('meta',$uri);
13542: undef(%metaentry);
13543: }
13544: my %metathesekeys=();
13545: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
13546: my $metastring;
13547: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
13548: my $which = &hreflocation('','/'.($liburi || $uri));
13549: $metastring =
13550: &Apache::lonnet::ssi_body($which,
13551: ('grade_target' => 'meta'));
13552: $cachetime = 1; # only want this cached in the child not long term
13553: } elsif (($uri !~ m -^(editupload)/-) &&
13554: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
13555: my $file=&filelocation('',&clutter($filename));
13556: #push(@{$metaentry{$uri.'.file'}},$file);
13557: $metastring=&getfile($file);
13558: }
13559: my $parser=HTML::LCParser->new(\$metastring);
13560: my $token;
13561: undef %metathesekeys;
13562: while ($token=$parser->get_token) {
13563: if ($token->[0] eq 'S') {
13564: if (defined($token->[2]->{'package'})) {
13565: #
13566: # This is a package - get package info
13567: #
13568: my $package=$token->[2]->{'package'};
13569: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13570: if (defined($token->[2]->{'id'})) {
13571: $keyroot.='_'.$token->[2]->{'id'};
13572: }
13573: if ($metaentry{':packages'}) {
13574: $metaentry{':packages'}.=','.$package.$keyroot;
13575: } else {
13576: $metaentry{':packages'}=$package.$keyroot;
13577: }
13578: foreach my $pack_entry (keys(%packagetab)) {
13579: my $part=$keyroot;
13580: $part=~s/^\_//;
13581: if ($pack_entry=~/^\Q$package\E\&/ ||
13582: $pack_entry=~/^\Q$package\E_0\&/) {
13583: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
13584: # ignore package.tab specified default values
13585: # here &package_tab_default() will fetch those
13586: if ($subp eq 'default') { next; }
13587: my $value=$packagetab{$pack_entry};
13588: my $unikey;
13589: if ($pack =~ /_0$/) {
13590: $unikey='parameter_0_'.$name;
13591: $part=0;
13592: } else {
13593: $unikey='parameter'.$keyroot.'_'.$name;
13594: }
13595: if ($subp eq 'display') {
13596: $value.=' [Part: '.$part.']';
13597: }
13598: $metaentry{':'.$unikey.'.part'}=$part;
13599: $metathesekeys{$unikey}=1;
13600: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13601: $metaentry{':'.$unikey.'.'.$subp}=$value;
13602: }
13603: if (defined($metaentry{':'.$unikey.'.default'})) {
13604: $metaentry{':'.$unikey}=
13605: $metaentry{':'.$unikey.'.default'};
13606: }
13607: }
13608: }
13609: } else {
13610: #
13611: # This is not a package - some other kind of start tag
13612: #
13613: my $entry=$token->[1];
13614: my $unikey='';
13615:
13616: if ($entry eq 'import') {
13617: #
13618: # Importing a library here
13619: #
13620: my $location=$parser->get_text('/import');
13621: my $dir=$filename;
13622: $dir=~s|[^/]*$||;
13623: $location=&filelocation($dir,$location);
13624:
13625: my $importid=$token->[2]->{'id'};
13626: my $importmode=$token->[2]->{'importmode'};
13627: #
13628: # Check metadata for imported file to
13629: # see if it contained response items
13630: #
13631: my ($origfile,@libfilekeys);
13632: my %currmetaentry = %metaentry;
13633: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
13634: $depthcount+1));
13635: if (grep(/^responseorder$/,@libfilekeys)) {
13636: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
13637: undef,$depthcount+1);
13638: if ($libresponseorder ne '') {
13639: if ($#origfiletagids<0) {
13640: undef(%importedrespids);
13641: undef(%importedpartids);
13642: }
13643: my @respids = split(/\s*,\s*/,$libresponseorder);
13644: if (@respids) {
13645: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
13646: }
13647: if ($importedrespids{$importid} ne '') {
13648: $importedresponses = 1;
13649: # We need to get the original file and the imported file to get the response order correct
13650: # Load and inspect original file
13651: if ($#origfiletagids<0) {
13652: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13653: $origfile=&getfile($origfilelocation);
13654: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13655: }
13656: }
13657: }
13658: }
13659: # Do not overwrite contents of %metaentry hash for resource itself with
13660: # hash populated for imported library file
13661: %metaentry = %currmetaentry;
13662: undef(%currmetaentry);
13663: if ($importmode eq 'part') {
13664: # Import as part(s)
13665: $importedparts=1;
13666: # We need to get the original file and the imported file to get the part order correct
13667: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
13668: # Load and inspect original file if we didn't do that already
13669: if ($#origfiletagids<0) {
13670: undef(%importedrespids);
13671: undef(%importedpartids);
13672: if ($origfile eq '') {
13673: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13674: $origfile=&getfile($origfilelocation);
13675: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13676: }
13677: }
13678: my @impfilepartids;
13679: # If <partorder> tag is included in metadata for the imported file
13680: # get the parts in the imported file from that.
13681: if (grep(/^partorder$/,@libfilekeys)) {
13682: %currmetaentry = %metaentry;
13683: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13684: $depthcount+1);
13685: %metaentry = %currmetaentry;
13686: undef(%currmetaentry);
13687: if ($libpartorder ne '') {
13688: @impfilepartids=split(/\s*,\s*/,$libpartorder);
13689: }
13690: } else {
13691: # If no <partorder> tag available, load and inspect imported file
13692: my $impfile=&getfile($location);
13693: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13694: }
13695: if ($#impfilepartids>=0) {
13696: # This problem had parts
13697: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
13698: } else {
13699: # Importing by turning a single problem into a problem part
13700: # It gets the import-tags ID as part-ID
13701: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
13702: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
13703: }
13704: } else {
13705: # Import as problem or as normal import
13706: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13707: unless ($importmode eq 'problem') {
13708: # Normal import
13709: if (defined($token->[2]->{'id'})) {
13710: $unikey.='_'.$token->[2]->{'id'};
13711: }
13712: }
13713: # Check metadata for imported file to
13714: # see if it contained parts
13715: if (grep(/^partorder$/,@libfilekeys)) {
13716: %currmetaentry = %metaentry;
13717: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13718: $depthcount+1);
13719: %metaentry = %currmetaentry;
13720: undef(%currmetaentry);
13721: if ($libpartorder ne '') {
13722: $importedparts = 1;
13723: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
13724: }
13725: }
13726: }
13727: if ($depthcount<20) {
13728: my $metadata =
13729: &metadata($uri,'keys',$toolsymb,$location,$unikey,
13730: $depthcount+1);
13731: foreach my $meta (split(',',$metadata)) {
13732: $metaentry{':'.$meta}=$metaentry{':'.$meta};
13733: $metathesekeys{$meta}=1;
13734: }
13735: }
13736: } else {
13737: #
13738: # Not importing, some other kind of non-package, non-library start tag
13739: #
13740: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
13741: if (defined($token->[2]->{'id'})) {
13742: $unikey.='_'.$token->[2]->{'id'};
13743: }
13744: if (defined($token->[2]->{'name'})) {
13745: $unikey.='_'.$token->[2]->{'name'};
13746: }
13747: $metathesekeys{$unikey}=1;
13748: foreach my $param (@{$token->[3]}) {
13749: $metaentry{':'.$unikey.'.'.$param} =
13750: $token->[2]->{$param};
13751: }
13752: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
13753: my $default=$metaentry{':'.$unikey.'.default'};
13754: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
13755: # only ws inside the tag, and not in default, so use default
13756: # as value
13757: $metaentry{':'.$unikey}=$default;
13758: } elsif ( $internaltext =~ /\S/ ) {
13759: # something interesting inside the tag
13760: $metaentry{':'.$unikey}=$internaltext;
13761: } else {
13762: # no interesting values, don't set a default
13763: }
13764: # end of not-a-package not-a-library import
13765: }
13766: # end of not-a-package start tag
13767: }
13768: # the next is the end of "start tag"
13769: }
13770: }
13771: my ($extension) = ($uri =~ /\.(\w+)$/);
13772: $extension = lc($extension);
13773: if ($extension eq 'htm') { $extension='html'; }
13774:
13775: foreach my $key (keys(%packagetab)) {
13776: #no specific packages #how's our extension
13777: if ($key!~/^extension_\Q$extension\E&/) { next; }
13778: &metadata_create_package_def($uri,$key,'extension_'.$extension,
13779: \%metathesekeys);
13780: }
13781:
13782: if (!exists($metaentry{':packages'})
13783: || $packagetab{"import_defaults&extension_$extension"}) {
13784: foreach my $key (keys(%packagetab)) {
13785: #no specific packages well let's get default then
13786: if ($key!~/^default&/) { next; }
13787: &metadata_create_package_def($uri,$key,'default',
13788: \%metathesekeys);
13789: }
13790: }
13791: # are there custom rights to evaluate
13792: if ($metaentry{':copyright'} eq 'custom') {
13793:
13794: #
13795: # Importing a rights file here
13796: #
13797: unless ($depthcount) {
13798: my $location=$metaentry{':customdistributionfile'};
13799: my $dir=$filename;
13800: $dir=~s|[^/]*$||;
13801: $location=&filelocation($dir,$location);
13802: my $rights_metadata =
13803: &metadata($uri,'keys',$toolsymb,$location,'_rights',
13804: $depthcount+1);
13805: foreach my $rights (split(',',$rights_metadata)) {
13806: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
13807: $metathesekeys{$rights}=1;
13808: }
13809: }
13810: }
13811: # uniqifiy package listing
13812: my %seen;
13813: my @uniq_packages =
13814: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
13815: $metaentry{':packages'} = join(',',@uniq_packages);
13816:
13817: if (($importedresponses) || ($importedparts)) {
13818: if ($importedparts) {
13819: # We had imported parts and need to rebuild partorder
13820: $metaentry{':partorder'}='';
13821: $metathesekeys{'partorder'}=1;
13822: }
13823: if ($importedresponses) {
13824: # We had imported responses and need to rebuil responseorder
13825: $metaentry{':responseorder'}='';
13826: $metathesekeys{'responseorder'}=1;
13827: }
13828: for (my $index=0;$index<$#origfiletagids;$index+=2) {
13829: my $origid = $origfiletagids[$index+1];
13830: if ($origfiletagids[$index] eq 'part') {
13831: # Original part, part of the problem
13832: if ($importedparts) {
13833: $metaentry{':partorder'}.=','.$origid;
13834: }
13835: } elsif ($origfiletagids[$index] eq 'import') {
13836: if ($importedparts) {
13837: # We have imported parts at this position
13838: if ($importedpartids{$origid} ne '') {
13839: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13840: }
13841: }
13842: if ($importedresponses) {
13843: # We have imported responses at this position
13844: if ($importedrespids{$origid} ne '') {
13845: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13846: }
13847: }
13848: } else {
13849: # Original response item, part of the problem
13850: if ($importedresponses) {
13851: $metaentry{':responseorder'}.=','.$origid;
13852: }
13853: }
13854: }
13855: if ($importedparts) {
13856: $metaentry{':partorder'}=~s/^\,//;
13857: }
13858: if ($importedresponses) {
13859: $metaentry{':responseorder'}=~s/^\,//;
13860: }
13861: }
13862: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13863: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13864: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13865: unless ($liburi) {
13866: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13867: }
13868: # this is the end of "was not already recently cached
13869: }
13870: return $metaentry{':'.$what};
13871: }
13872:
13873: sub metadata_create_package_def {
13874: my ($uri,$key,$package,$metathesekeys)=@_;
13875: my ($pack,$name,$subp)=split(/\&/,$key);
13876: if ($subp eq 'default') { next; }
13877:
13878: if (defined($metaentry{':packages'})) {
13879: $metaentry{':packages'}.=','.$package;
13880: } else {
13881: $metaentry{':packages'}=$package;
13882: }
13883: my $value=$packagetab{$key};
13884: my $unikey;
13885: $unikey='parameter_0_'.$name;
13886: $metaentry{':'.$unikey.'.part'}=0;
13887: $$metathesekeys{$unikey}=1;
13888: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13889: $metaentry{':'.$unikey.'.'.$subp}=$value;
13890: }
13891: if (defined($metaentry{':'.$unikey.'.default'})) {
13892: $metaentry{':'.$unikey}=
13893: $metaentry{':'.$unikey.'.default'};
13894: }
13895: }
13896:
13897: sub metadata_generate_part0 {
13898: my ($metadata,$metacache,$uri) = @_;
13899: my %allnames;
13900: foreach my $metakey (keys(%$metadata)) {
13901: if ($metakey=~/^parameter\_(.*)/) {
13902: my $part=$$metacache{':'.$metakey.'.part'};
13903: my $name=$$metacache{':'.$metakey.'.name'};
13904: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13905: $allnames{$name}=$part;
13906: }
13907: }
13908: }
13909: foreach my $name (keys(%allnames)) {
13910: $$metadata{"parameter_0_$name"}=1;
13911: my $key=":parameter_0_$name";
13912: $$metacache{"$key.part"}='0';
13913: $$metacache{"$key.name"}=$name;
13914: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13915: $allnames{$name}.'_'.$name.
13916: '.type'};
13917: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
13918: '.display'};
13919: my $expr='[Part: '.$allnames{$name}.']';
13920: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
13921: $$metacache{"$key.display"}=$olddis;
13922: }
13923: }
13924:
13925: # ------------------------------------------------------ Devalidate title cache
13926:
13927: sub devalidate_title_cache {
13928: my ($url)=@_;
13929: if (!$env{'request.course.id'}) { return; }
13930: my $symb=&symbread($url);
13931: if (!$symb) { return; }
13932: my $key=$env{'request.course.id'}."\0".$symb;
13933: &devalidate_cache_new('title',$key);
13934: }
13935:
13936: # ------------------------------------------------- Get the title of a course
13937:
13938: sub current_course_title {
13939: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
13940: }
13941: # ------------------------------------------------- Get the title of a resource
13942:
13943: sub gettitle {
13944: my $urlsymb=shift;
13945: my $symb=&symbread($urlsymb);
13946: if ($symb) {
13947: my $key=$env{'request.course.id'}."\0".$symb;
13948: my ($result,$cached)=&is_cached_new('title',$key);
13949: if (defined($cached)) {
13950: return $result;
13951: }
13952: my ($map,$resid,$url)=&decode_symb($symb);
13953: my $title='';
13954: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
13955: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
13956: } else {
13957: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13958: &GDBM_READER(),0640)) {
13959: my $mapid=$bighash{'map_pc_'.&clutter($map)};
13960: $title=$bighash{'title_'.$mapid.'.'.$resid};
13961: untie(%bighash);
13962: }
13963: }
13964: $title=~s/\&colon\;/\:/gs;
13965: if ($title) {
13966: # Remember both $symb and $title for dynamic metadata
13967: $accesshash{$symb.'___crstitle'}=$title;
13968: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
13969: # Cache this title and then return it
13970: return &do_cache_new('title',$key,$title,600);
13971: }
13972: $urlsymb=$url;
13973: }
13974: my $title=&metadata($urlsymb,'title');
13975: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13976: return $title;
13977: }
13978:
13979: sub get_slot {
13980: my ($which,$cnum,$cdom)=@_;
13981: if (!$cnum || !$cdom) {
13982: (undef,my $courseid)=&whichuser();
13983: $cdom=$env{'course.'.$courseid.'.domain'};
13984: $cnum=$env{'course.'.$courseid.'.num'};
13985: }
13986: my $key=join("\0",'slots',$cdom,$cnum,$which);
13987: my %slotinfo;
13988: if (exists($remembered{$key})) {
13989: $slotinfo{$which} = $remembered{$key};
13990: } else {
13991: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13992: &Apache::lonhomework::showhash(%slotinfo);
13993: my ($tmp)=keys(%slotinfo);
13994: if ($tmp=~/^error:/) { return (); }
13995: $remembered{$key} = $slotinfo{$which};
13996: }
13997: if (ref($slotinfo{$which}) eq 'HASH') {
13998: return %{$slotinfo{$which}};
13999: }
14000: return $slotinfo{$which};
14001: }
14002:
14003: sub get_reservable_slots {
14004: my ($cnum,$cdom,$uname,$udom) = @_;
14005: my $now = time;
14006: my $reservable_info;
14007: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
14008: if (exists($remembered{$key})) {
14009: $reservable_info = $remembered{$key};
14010: } else {
14011: my %resv;
14012: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
14013: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
14014: $reservable_info = \%resv;
14015: $remembered{$key} = $reservable_info;
14016: }
14017: return $reservable_info;
14018: }
14019:
14020: sub get_course_slots {
14021: my ($cnum,$cdom) = @_;
14022: my $hashid=$cnum.':'.$cdom;
14023: my ($result,$cached) = &is_cached_new('allslots',$hashid);
14024: if (defined($cached)) {
14025: if (ref($result) eq 'HASH') {
14026: return %{$result};
14027: }
14028: } else {
14029: my %slots=&dump('slots',$cdom,$cnum);
14030: my ($tmp) = keys(%slots);
14031: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
14032: &do_cache_new('allslots',$hashid,\%slots,600);
14033: return %slots;
14034: }
14035: }
14036: return;
14037: }
14038:
14039: sub devalidate_slots_cache {
14040: my ($cnum,$cdom)=@_;
14041: my $hashid=$cnum.':'.$cdom;
14042: &devalidate_cache_new('allslots',$hashid);
14043: }
14044:
14045: sub get_coursechange {
14046: my ($cdom,$cnum) = @_;
14047: if ($cdom eq '' || $cnum eq '') {
14048: return unless ($env{'request.course.id'});
14049: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
14050: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
14051: }
14052: my $hashid=$cdom.'_'.$cnum;
14053: my ($change,$cached)=&is_cached_new('crschange',$hashid);
14054: if ((defined($cached)) && ($change ne '')) {
14055: return $change;
14056: } else {
14057: my %crshash;
14058: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
14059: if ($crshash{'internal.contentchange'} eq '') {
14060: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
14061: if ($change eq '') {
14062: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
14063: $change = $crshash{'internal.created'};
14064: }
14065: } else {
14066: $change = $crshash{'internal.contentchange'};
14067: }
14068: my $cachetime = 600;
14069: &do_cache_new('crschange',$hashid,$change,$cachetime);
14070: }
14071: return $change;
14072: }
14073:
14074: sub devalidate_coursechange_cache {
14075: my ($cdom,$cnum)=@_;
14076: my $hashid=$cdom.'_'.$cnum;
14077: &devalidate_cache_new('crschange',$hashid);
14078: }
14079:
14080: sub get_suppchange {
14081: my ($cdom,$cnum) = @_;
14082: if ($cdom eq '' || $cnum eq '') {
14083: return unless ($env{'request.course.id'});
14084: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
14085: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
14086: }
14087: my $hashid=$cdom.'_'.$cnum;
14088: my ($change,$cached)=&is_cached_new('suppchange',$hashid);
14089: if ((defined($cached)) && ($change ne '')) {
14090: return $change;
14091: } else {
14092: my %crshash = &get('environment',['internal.supplementalchange'],$cdom,$cnum);
14093: if ($crshash{'internal.supplementalchange'} eq '') {
14094: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
14095: if ($change eq '') {
14096: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
14097: $change = $crshash{'internal.created'};
14098: }
14099: } else {
14100: $change = $crshash{'internal.supplementalchange'};
14101: }
14102: my $cachetime = 600;
14103: &do_cache_new('suppchange',$hashid,$change,$cachetime);
14104: }
14105: return $change;
14106: }
14107:
14108: sub devalidate_suppchange_cache {
14109: my ($cdom,$cnum)=@_;
14110: my $hashid=$cdom.'_'.$cnum;
14111: &devalidate_cache_new('suppchange',$hashid);
14112: }
14113:
14114: sub update_supp_caches {
14115: my ($cdom,$cnum) = @_;
14116: my %servers = &internet_dom_servers($cdom);
14117: my @ids=¤t_machine_ids();
14118: foreach my $server (keys(%servers)) {
14119: next if (grep(/^\Q$server\E$/,@ids));
14120: my $hashid=$cnum.':'.$cdom;
14121: my $cachekey = &escape('showsupp').':'.&escape($hashid);
14122: &remote_devalidate_cache($server,[$cachekey]);
14123: }
14124: &has_unhidden_suppfiles($cnum,$cdom,1,1);
14125: &count_supptools($cnum,$cdom,1);
14126: my $now = time;
14127: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
14128: &Apache::lonnet::appenv({'request.course.suppupdated' => $now});
14129: }
14130: &put('environment',{'internal.supplementalchange' => $now},
14131: $cdom,$cnum);
14132: &Apache::lonnet::appenv(
14133: {'course.'.$cdom.'_'.$cnum.'.internal.supplementalchange' => $now});
14134: &do_cache_new('suppchange',$cdom.'_'.$cnum,$now,600);
14135: }
14136:
14137: # ------------------------------------------------- Update symbolic store links
14138:
14139: sub symblist {
14140: my ($mapname,%newhash)=@_;
14141: $mapname=&deversion(&declutter($mapname));
14142: my %hash;
14143: if (($env{'request.course.fn'}) && (%newhash)) {
14144: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
14145: &GDBM_WRCREAT(),0640)) {
14146: foreach my $url (keys(%newhash)) {
14147: next if ($url eq 'last_known'
14148: && $env{'form.no_update_last_known'});
14149: $hash{declutter($url)}=&encode_symb($mapname,
14150: $newhash{$url}->[1],
14151: $newhash{$url}->[0]);
14152: }
14153: if (untie(%hash)) {
14154: return 'ok';
14155: }
14156: }
14157: }
14158: return 'error';
14159: }
14160:
14161: # --------------------------------------------------------------- Verify a symb
14162:
14163: sub symbverify {
14164: my ($symb,$thisurl,$encstate)=@_;
14165: my $thisfn=$thisurl;
14166: $thisfn=&declutter($thisfn);
14167: # direct jump to resource in page or to a sequence - will construct own symbs
14168: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
14169: # check URL part
14170: my ($map,$resid,$url)=&decode_symb($symb);
14171:
14172: unless ($url eq $thisfn) { return 0; }
14173:
14174: $symb=&symbclean($symb);
14175: $thisurl=&deversion($thisurl);
14176: $thisfn=&deversion($thisfn);
14177:
14178: my %bighash;
14179: my $okay=0;
14180:
14181: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14182: &GDBM_READER(),0640)) {
14183: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
14184: $thisurl =~ s/\?.+$//;
14185: if ($map =~ m{^uploaded/.+\.page$}) {
14186: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
14187: $thisurl =~ s{^\Qhttp://https://\E}{https://};
14188: }
14189: }
14190: my $ids;
14191: if ($map =~ m{^uploaded/.+\.page$}) {
14192: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
14193: } else {
14194: $ids=$bighash{'ids_'.&clutter($thisurl)};
14195: }
14196: unless ($ids) {
14197: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
14198: $ids=$bighash{$idkey};
14199: }
14200: if ($ids) {
14201: # ------------------------------------------------------------------- Has ID(s)
14202: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
14203: $symb =~ s/\?.+$//;
14204: }
14205: foreach my $id (split(/\,/,$ids)) {
14206: my ($mapid,$resid)=split(/\./,$id);
14207: if (
14208: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
14209: eq $symb) {
14210: if (ref($encstate)) {
14211: $$encstate = $bighash{'encrypted_'.$id};
14212: }
14213: if (($env{'request.role.adv'}) ||
14214: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
14215: ($thisurl eq '/adm/navmaps')) {
14216: $okay=1;
14217: last;
14218: }
14219: }
14220: }
14221: }
14222: untie(%bighash);
14223: }
14224: return $okay;
14225: }
14226:
14227: # --------------------------------------------------------------- Clean-up symb
14228:
14229: sub symbclean {
14230: my $symb=shift;
14231: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
14232: # remove version from map
14233: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
14234:
14235: # remove version from URL
14236: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
14237:
14238: # remove wrapper
14239:
14240: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
14241: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
14242: return $symb;
14243: }
14244:
14245: # ---------------------------------------------- Split symb to find map and url
14246:
14247: sub encode_symb {
14248: my ($map,$resid,$url)=@_;
14249: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
14250: }
14251:
14252: sub decode_symb {
14253: my $symb=shift;
14254: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
14255: my ($map,$resid,$url)=split(/___/,$symb);
14256: return (&fixversion($map),$resid,&fixversion($url));
14257: }
14258:
14259: sub fixversion {
14260: my $fn=shift;
14261: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
14262: my %bighash;
14263: my $uri=&clutter($fn);
14264: my $key=$env{'request.course.id'}.'_'.$uri;
14265: # is this cached?
14266: my ($result,$cached)=&is_cached_new('courseresversion',$key);
14267: if (defined($cached)) { return $result; }
14268: # unfortunately not cached, or expired
14269: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14270: &GDBM_READER(),0640)) {
14271: if ($bighash{'version_'.$uri}) {
14272: my $version=$bighash{'version_'.$uri};
14273: unless (($version eq 'mostrecent') ||
14274: ($version==&getversion($uri))) {
14275: $uri=~s/\.(\w+)$/\.$version\.$1/;
14276: }
14277: }
14278: untie %bighash;
14279: }
14280: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
14281: }
14282:
14283: sub deversion {
14284: my $url=shift;
14285: $url=~s/\.\d+\.(\w+)$/\.$1/;
14286: return $url;
14287: }
14288:
14289: # ------------------------------------------------------ Return symb list entry
14290:
14291: sub symbread {
14292: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
14293: $ignoresymbdb,$noenccheck)=@_;
14294: my $cache_str='request.symbread.cached.'.$thisfn;
14295: if (defined($env{$cache_str})) {
14296: unless (ref($possibles) eq 'HASH') {
14297: if ($ignorecachednull) {
14298: return $env{$cache_str} unless ($env{$cache_str} eq '');
14299: } else {
14300: return $env{$cache_str};
14301: }
14302: }
14303: }
14304: # no filename provided? try from environment
14305: unless ($thisfn) {
14306: if ($env{'request.symb'}) {
14307: return $env{$cache_str}=&symbclean($env{'request.symb'});
14308: }
14309: $thisfn=$env{'request.filename'};
14310: }
14311: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14312: # is that filename actually a symb? Verify, clean, and return
14313: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
14314: if (&symbverify($thisfn,$1)) {
14315: return $env{$cache_str}=&symbclean($thisfn);
14316: }
14317: }
14318: $thisfn=declutter($thisfn);
14319: my %hash;
14320: my %bighash;
14321: my $syval='';
14322: if (($env{'request.course.fn'}) && ($thisfn)) {
14323: unless ($ignoresymbdb) {
14324: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
14325: &GDBM_READER(),0640)) {
14326: $syval=$hash{$thisfn};
14327: untie(%hash);
14328: }
14329: if ($syval && $checkforblock) {
14330: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
14331: if (@blockers) {
14332: $syval='';
14333: }
14334: }
14335: }
14336: # ---------------------------------------------------------- There was an entry
14337: if ($syval) {
14338: #unless ($syval=~/\_\d+$/) {
14339: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
14340: #&appenv({'request.ambiguous' => $thisfn});
14341: #return $env{$cache_str}='';
14342: #}
14343: #$syval.=$1;
14344: #}
14345: } else {
14346: # ------------------------------------------------------- Was not in symb table
14347: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14348: &GDBM_READER(),0640)) {
14349: # ---------------------------------------------- Get ID(s) for current resource
14350: my $ids=$bighash{'ids_'.&clutter($thisfn)};
14351: unless ($ids) {
14352: $ids=$bighash{'ids_/'.$thisfn};
14353: }
14354: unless ($ids) {
14355: # alias?
14356: $ids=$bighash{'mapalias_'.$thisfn};
14357: }
14358: if ($ids) {
14359: # ------------------------------------------------------------------- Has ID(s)
14360: my @possibilities=split(/\,/,$ids);
14361: if ($#possibilities==0) {
14362: # ----------------------------------------------- There is only one possibility
14363: my ($mapid,$resid)=split(/\./,$ids);
14364: $syval=&encode_symb($bighash{'map_id_'.$mapid},
14365: $resid,$thisfn);
14366: if (ref($possibles) eq 'HASH') {
14367: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14368: $possibles->{$syval} = 1;
14369: }
14370: }
14371: if ($checkforblock) {
14372: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14373: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
14374: if (@blockers) {
14375: $syval = '';
14376: untie(%bighash);
14377: return $env{$cache_str}='';
14378: }
14379: }
14380: }
14381: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14382: # ------------------------------------------ There is more than one possibility
14383: my $realpossible=0;
14384: foreach my $id (@possibilities) {
14385: my $file=$bighash{'src_'.$id};
14386: my $canaccess;
14387: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14388: $canaccess = 1;
14389: } else {
14390: $canaccess = &allowed('bre',$file);
14391: }
14392: if ($canaccess) {
14393: my ($mapid,$resid)=split(/\./,$id);
14394: if ($bighash{'map_type_'.$mapid} ne 'page') {
14395: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
14396: $resid,$thisfn);
14397: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
14398: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
14399: if ($checkforblock) {
14400: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
14401: if (@blockers > 0) {
14402: $syval = '';
14403: } else {
14404: $syval = $poss_syval;
14405: $realpossible++;
14406: }
14407: } else {
14408: $syval = $poss_syval;
14409: $realpossible++;
14410: }
14411: if ($syval) {
14412: if (ref($possibles) eq 'HASH') {
14413: $possibles->{$syval} = 1;
14414: }
14415: }
14416: }
14417: }
14418: }
14419: if ($realpossible!=1) { $syval=''; }
14420: } else {
14421: $syval='';
14422: }
14423: }
14424: untie(%bighash);
14425: }
14426: }
14427: if ($syval) {
14428: return $env{$cache_str}=$syval;
14429: }
14430: }
14431: &appenv({'request.ambiguous' => $thisfn});
14432: return $env{$cache_str}='';
14433: }
14434:
14435: # ---------------------------------------------------------- Return random seed
14436:
14437: sub numval {
14438: my $txt=shift;
14439: $txt=~tr/A-J/0-9/;
14440: $txt=~tr/a-j/0-9/;
14441: $txt=~tr/K-T/0-9/;
14442: $txt=~tr/k-t/0-9/;
14443: $txt=~tr/U-Z/0-5/;
14444: $txt=~tr/u-z/0-5/;
14445: $txt=~s/\D//g;
14446: if ($_64bit) { if ($txt > 2**32) { return -1; } }
14447: return int($txt);
14448: }
14449:
14450: sub numval2 {
14451: my $txt=shift;
14452: $txt=~tr/A-J/0-9/;
14453: $txt=~tr/a-j/0-9/;
14454: $txt=~tr/K-T/0-9/;
14455: $txt=~tr/k-t/0-9/;
14456: $txt=~tr/U-Z/0-5/;
14457: $txt=~tr/u-z/0-5/;
14458: $txt=~s/\D//g;
14459: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14460: my $total;
14461: foreach my $val (@txts) { $total+=$val; }
14462: if ($_64bit) { if ($total > 2**32) { return -1; } }
14463: return int($total);
14464: }
14465:
14466: sub numval3 {
14467: use integer;
14468: my $txt=shift;
14469: $txt=~tr/A-J/0-9/;
14470: $txt=~tr/a-j/0-9/;
14471: $txt=~tr/K-T/0-9/;
14472: $txt=~tr/k-t/0-9/;
14473: $txt=~tr/U-Z/0-5/;
14474: $txt=~tr/u-z/0-5/;
14475: $txt=~s/\D//g;
14476: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14477: my $total;
14478: foreach my $val (@txts) { $total+=$val; }
14479: if ($_64bit) { $total=(($total<<32)>>32); }
14480: return $total;
14481: }
14482:
14483: sub digest {
14484: my ($data)=@_;
14485: my $digest=&Digest::MD5::md5($data);
14486: my ($a,$b,$c,$d)=unpack("iiii",$digest);
14487: my ($e,$f);
14488: {
14489: use integer;
14490: $e=($a+$b);
14491: $f=($c+$d);
14492: if ($_64bit) {
14493: $e=(($e<<32)>>32);
14494: $f=(($f<<32)>>32);
14495: }
14496: }
14497: if (wantarray) {
14498: return ($e,$f);
14499: } else {
14500: my $g;
14501: {
14502: use integer;
14503: $g=($e+$f);
14504: if ($_64bit) {
14505: $g=(($g<<32)>>32);
14506: }
14507: }
14508: return $g;
14509: }
14510: }
14511:
14512: sub latest_rnd_algorithm_id {
14513: return '64bit5';
14514: }
14515:
14516: sub get_rand_alg {
14517: my ($courseid)=@_;
14518: if (!$courseid) { $courseid=(&whichuser())[1]; }
14519: if ($courseid) {
14520: return $env{"course.$courseid.rndseed"};
14521: }
14522: return &latest_rnd_algorithm_id();
14523: }
14524:
14525: sub validCODE {
14526: my ($CODE)=@_;
14527: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
14528: return 0;
14529: }
14530:
14531: sub getCODE {
14532: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
14533: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
14534: defined($Apache::lonhomework::parsing_a_task) ) &&
14535: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
14536: return $Apache::lonhomework::history{'resource.CODE'};
14537: }
14538: return undef;
14539: }
14540: #
14541: # Determines the random seed for a specific context:
14542: #
14543: # parameters:
14544: # symb - in course context the symb for the seed.
14545: # course_id - The course id of the form domain_coursenum.
14546: # domain - Domain for the user.
14547: # course - Course for the user.
14548: # cenv - environment of the course.
14549: #
14550: # NOTE:
14551: # All parameters are picked out of the environment if missing
14552: # or not defined.
14553: # If a symb cannot be determined the current time is used instead.
14554: #
14555: # For a given well defined symb, courside, domain, username,
14556: # and course environment, the seed is reproducible.
14557: #
14558: sub rndseed {
14559: my ($symb,$courseid,$domain,$username, $cenv)=@_;
14560: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
14561: if (!defined($symb)) {
14562: unless ($symb=$wsymb) { return time; }
14563: }
14564: if (!defined $courseid) {
14565: $courseid=$wcourseid;
14566: }
14567: if (!defined $domain) { $domain=$wdomain; }
14568: if (!defined $username) { $username=$wusername }
14569:
14570: my $which;
14571: if (defined($cenv->{'rndseed'})) {
14572: $which = $cenv->{'rndseed'};
14573: } else {
14574: $which =&get_rand_alg($courseid);
14575: }
14576: if (defined(&getCODE())) {
14577:
14578: if ($which eq '64bit5') {
14579: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
14580: } elsif ($which eq '64bit4') {
14581: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
14582: } else {
14583: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
14584: }
14585: } elsif ($which eq '64bit5') {
14586: return &rndseed_64bit5($symb,$courseid,$domain,$username);
14587: } elsif ($which eq '64bit4') {
14588: return &rndseed_64bit4($symb,$courseid,$domain,$username);
14589: } elsif ($which eq '64bit3') {
14590: return &rndseed_64bit3($symb,$courseid,$domain,$username);
14591: } elsif ($which eq '64bit2') {
14592: return &rndseed_64bit2($symb,$courseid,$domain,$username);
14593: } elsif ($which eq '64bit') {
14594: return &rndseed_64bit($symb,$courseid,$domain,$username);
14595: }
14596: return &rndseed_32bit($symb,$courseid,$domain,$username);
14597: }
14598:
14599: sub rndseed_32bit {
14600: my ($symb,$courseid,$domain,$username)=@_;
14601: {
14602: use integer;
14603: my $symbchck=unpack("%32C*",$symb) << 27;
14604: my $symbseed=numval($symb) << 22;
14605: my $namechck=unpack("%32C*",$username) << 17;
14606: my $nameseed=numval($username) << 12;
14607: my $domainseed=unpack("%32C*",$domain) << 7;
14608: my $courseseed=unpack("%32C*",$courseid);
14609: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
14610: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14611: #&logthis("rndseed :$num:$symb");
14612: if ($_64bit) { $num=(($num<<32)>>32); }
14613: return $num;
14614: }
14615: }
14616:
14617: sub rndseed_64bit {
14618: my ($symb,$courseid,$domain,$username)=@_;
14619: {
14620: use integer;
14621: my $symbchck=unpack("%32S*",$symb) << 21;
14622: my $symbseed=numval($symb) << 10;
14623: my $namechck=unpack("%32S*",$username);
14624:
14625: my $nameseed=numval($username) << 21;
14626: my $domainseed=unpack("%32S*",$domain) << 10;
14627: my $courseseed=unpack("%32S*",$courseid);
14628:
14629: my $num1=$symbchck+$symbseed+$namechck;
14630: my $num2=$nameseed+$domainseed+$courseseed;
14631: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14632: #&logthis("rndseed :$num:$symb");
14633: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14634: return "$num1,$num2";
14635: }
14636: }
14637:
14638: sub rndseed_64bit2 {
14639: my ($symb,$courseid,$domain,$username)=@_;
14640: {
14641: use integer;
14642: # strings need to be an even # of cahracters long, it it is odd the
14643: # last characters gets thrown away
14644: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14645: my $symbseed=numval($symb) << 10;
14646: my $namechck=unpack("%32S*",$username.' ');
14647:
14648: my $nameseed=numval($username) << 21;
14649: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14650: my $courseseed=unpack("%32S*",$courseid.' ');
14651:
14652: my $num1=$symbchck+$symbseed+$namechck;
14653: my $num2=$nameseed+$domainseed+$courseseed;
14654: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14655: #&logthis("rndseed :$num:$symb");
14656: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14657: return "$num1,$num2";
14658: }
14659: }
14660:
14661: sub rndseed_64bit3 {
14662: my ($symb,$courseid,$domain,$username)=@_;
14663: {
14664: use integer;
14665: # strings need to be an even # of cahracters long, it it is odd the
14666: # last characters gets thrown away
14667: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14668: my $symbseed=numval2($symb) << 10;
14669: my $namechck=unpack("%32S*",$username.' ');
14670:
14671: my $nameseed=numval2($username) << 21;
14672: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14673: my $courseseed=unpack("%32S*",$courseid.' ');
14674:
14675: my $num1=$symbchck+$symbseed+$namechck;
14676: my $num2=$nameseed+$domainseed+$courseseed;
14677: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14678: #&logthis("rndseed :$num1:$num2:$_64bit");
14679: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14680:
14681: return "$num1:$num2";
14682: }
14683: }
14684:
14685: sub rndseed_64bit4 {
14686: my ($symb,$courseid,$domain,$username)=@_;
14687: {
14688: use integer;
14689: # strings need to be an even # of cahracters long, it it is odd the
14690: # last characters gets thrown away
14691: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14692: my $symbseed=numval3($symb) << 10;
14693: my $namechck=unpack("%32S*",$username.' ');
14694:
14695: my $nameseed=numval3($username) << 21;
14696: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14697: my $courseseed=unpack("%32S*",$courseid.' ');
14698:
14699: my $num1=$symbchck+$symbseed+$namechck;
14700: my $num2=$nameseed+$domainseed+$courseseed;
14701: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14702: #&logthis("rndseed :$num1:$num2:$_64bit");
14703: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14704:
14705: return "$num1:$num2";
14706: }
14707: }
14708:
14709: sub rndseed_64bit5 {
14710: my ($symb,$courseid,$domain,$username)=@_;
14711: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
14712: return "$num1:$num2";
14713: }
14714:
14715: sub rndseed_CODE_64bit {
14716: my ($symb,$courseid,$domain,$username)=@_;
14717: {
14718: use integer;
14719: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14720: my $symbseed=numval2($symb);
14721: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14722: my $CODEseed=numval(&getCODE());
14723: my $courseseed=unpack("%32S*",$courseid.' ');
14724: my $num1=$symbseed+$CODEchck;
14725: my $num2=$CODEseed+$courseseed+$symbchck;
14726: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14727: #&logthis("rndseed :$num1:$num2:$symb");
14728: if ($_64bit) { $num1=(($num1<<32)>>32); }
14729: if ($_64bit) { $num2=(($num2<<32)>>32); }
14730: return "$num1:$num2";
14731: }
14732: }
14733:
14734: sub rndseed_CODE_64bit4 {
14735: my ($symb,$courseid,$domain,$username)=@_;
14736: {
14737: use integer;
14738: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14739: my $symbseed=numval3($symb);
14740: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14741: my $CODEseed=numval3(&getCODE());
14742: my $courseseed=unpack("%32S*",$courseid.' ');
14743: my $num1=$symbseed+$CODEchck;
14744: my $num2=$CODEseed+$courseseed+$symbchck;
14745: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14746: #&logthis("rndseed :$num1:$num2:$symb");
14747: if ($_64bit) { $num1=(($num1<<32)>>32); }
14748: if ($_64bit) { $num2=(($num2<<32)>>32); }
14749: return "$num1:$num2";
14750: }
14751: }
14752:
14753: sub rndseed_CODE_64bit5 {
14754: my ($symb,$courseid,$domain,$username)=@_;
14755: my $code = &getCODE();
14756: my ($num1,$num2)=&digest("$symb,$courseid,$code");
14757: return "$num1:$num2";
14758: }
14759:
14760: sub setup_random_from_rndseed {
14761: my ($rndseed)=@_;
14762: if ($rndseed =~/([,:])/) {
14763: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
14764: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
14765: &Math::Random::random_set_seed_from_phrase($rndseed);
14766: } else {
14767: &Math::Random::random_set_seed($num1,$num2);
14768: }
14769: } else {
14770: &Math::Random::random_set_seed_from_phrase($rndseed);
14771: }
14772: }
14773:
14774: sub latest_receipt_algorithm_id {
14775: return 'receipt3';
14776: }
14777:
14778: sub recunique {
14779: my $fucourseid=shift;
14780: my $unique;
14781: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
14782: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14783: $unique=$env{"course.$fucourseid.internal.encseed"};
14784: } else {
14785: $unique=$perlvar{'lonReceipt'};
14786: }
14787: return unpack("%32C*",$unique);
14788: }
14789:
14790: sub recprefix {
14791: my $fucourseid=shift;
14792: my $prefix;
14793: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
14794: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14795: $prefix=$env{"course.$fucourseid.internal.encpref"};
14796: } else {
14797: $prefix=$perlvar{'lonHostID'};
14798: }
14799: return unpack("%32C*",$prefix);
14800: }
14801:
14802: sub ireceipt {
14803: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
14804:
14805: my $return =&recprefix($fucourseid).'-';
14806:
14807: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
14808: $env{'request.state'} eq 'construct') {
14809: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
14810: return $return;
14811: }
14812:
14813: my $cuname=unpack("%32C*",$funame);
14814: my $cudom=unpack("%32C*",$fudom);
14815: my $cucourseid=unpack("%32C*",$fucourseid);
14816: my $cusymb=unpack("%32C*",$fusymb);
14817: my $cunique=&recunique($fucourseid);
14818: my $cpart=unpack("%32S*",$part);
14819: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
14820:
14821: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
14822:
14823: $return.= ($cunique%$cuname+
14824: $cunique%$cudom+
14825: $cusymb%$cuname+
14826: $cusymb%$cudom+
14827: $cucourseid%$cuname+
14828: $cucourseid%$cudom+
14829: $cpart%$cuname+
14830: $cpart%$cudom);
14831: } else {
14832: $return.= ($cunique%$cuname+
14833: $cunique%$cudom+
14834: $cusymb%$cuname+
14835: $cusymb%$cudom+
14836: $cucourseid%$cuname+
14837: $cucourseid%$cudom);
14838: }
14839: return $return;
14840: }
14841:
14842: sub receipt {
14843: my ($part)=@_;
14844: my ($symb,$courseid,$domain,$name) = &whichuser();
14845: return &ireceipt($name,$domain,$courseid,$symb,$part);
14846: }
14847:
14848: sub whichuser {
14849: my ($passedsymb)=@_;
14850: my ($symb,$courseid,$domain,$name,$publicuser);
14851: if (defined($env{'form.grade_symb'})) {
14852: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
14853: my $allowed=&allowed('vgr',$tmp_courseid);
14854: if (!$allowed &&
14855: exists($env{'request.course.sec'}) &&
14856: $env{'request.course.sec'} !~ /^\s*$/) {
14857: $allowed=&allowed('vgr',$tmp_courseid.
14858: '/'.$env{'request.course.sec'});
14859: }
14860: if ($allowed) {
14861: ($symb)=&get_env_multiple('form.grade_symb');
14862: $courseid=$tmp_courseid;
14863: ($domain)=&get_env_multiple('form.grade_domain');
14864: ($name)=&get_env_multiple('form.grade_username');
14865: return ($symb,$courseid,$domain,$name,$publicuser);
14866: }
14867: }
14868: if (!$passedsymb) {
14869: $symb=&symbread();
14870: } else {
14871: $symb=$passedsymb;
14872: }
14873: $courseid=$env{'request.course.id'};
14874: $domain=$env{'user.domain'};
14875: $name=$env{'user.name'};
14876: if ($name eq 'public' && $domain eq 'public') {
14877: if (!defined($env{'form.username'})) {
14878: $env{'form.username'}.=time.rand(10000000);
14879: }
14880: $name.=$env{'form.username'};
14881: }
14882: return ($symb,$courseid,$domain,$name,$publicuser);
14883:
14884: }
14885:
14886: # ------------------------------------------------------------ Serves up a file
14887: # returns either the contents of the file or
14888: # -1 if the file doesn't exist
14889: #
14890: # if the target is a file that was uploaded via DOCS,
14891: # a check will be made to see if a current copy exists on the local server,
14892: # if it does this will be served, otherwise a copy will be retrieved from
14893: # the home server for the course and stored in /home/httpd/html/userfiles on
14894: # the local server.
14895:
14896: sub getfile {
14897: my ($file) = @_;
14898: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14899: &repcopy($file);
14900: return &readfile($file);
14901: }
14902:
14903: sub repcopy_userfile {
14904: my ($file)=@_;
14905: my $londocroot = $perlvar{'lonDocRoot'};
14906: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14907: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14908: my ($cdom,$cnum,$filename) =
14909: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14910: my $uri="/uploaded/$cdom/$cnum/$filename";
14911: if (-e "$file") {
14912: # we already have a local copy, check it out
14913: my @fileinfo = stat($file);
14914: my $rtncode;
14915: my $info;
14916: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
14917: if ($lwpresp ne 'ok') {
14918: # there is no such file anymore, even though we had a local copy
14919: if ($rtncode eq '404') {
14920: unlink($file);
14921: }
14922: return -1;
14923: }
14924: if ($info < $fileinfo[9]) {
14925: # nice, the file we have is up-to-date, just say okay
14926: return 'ok';
14927: } else {
14928: # the file is outdated, get rid of it
14929: unlink($file);
14930: }
14931: }
14932: # one way or the other, at this point, we don't have the file
14933: # construct the correct path for the file
14934: my @parts = ($cdom,$cnum);
14935: if ($filename =~ m|^(.+)/[^/]+$|) {
14936: push @parts, split(/\//,$1);
14937: }
14938: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
14939: foreach my $part (@parts) {
14940: $path .= '/'.$part;
14941: if (!-e $path) {
14942: mkdir($path,0770);
14943: }
14944: }
14945: # now the path exists for sure
14946: # get a user agent
14947: my $transferfile=$file.'.in.transfer';
14948: # FIXME: this should flock
14949: if (-e $transferfile) { return 'ok'; }
14950: my $request;
14951: $uri=~s/^\///;
14952: my $homeserver = &homeserver($cnum,$cdom);
14953: my $hostname = &hostname($homeserver);
14954: my $protocol = $protocol{$homeserver};
14955: $protocol = 'http' if ($protocol ne 'https');
14956: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
14957: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
14958: # did it work?
14959: if ($response->is_error()) {
14960: unlink($transferfile);
14961: &logthis("Userfile repcopy failed for $uri");
14962: return -1;
14963: }
14964: # worked, rename the transfer file
14965: rename($transferfile,$file);
14966: return 'ok';
14967: }
14968:
14969: sub tokenwrapper {
14970: my $uri=shift;
14971: $uri=~s|^https?\://([^/]+)||;
14972: $uri=~s|^/||;
14973: $env{'user.environment'}=~/\/([^\/]+)\.id/;
14974: my $token=$1;
14975: my (undef,$udom,$uname,$file)=split('/',$uri,4);
14976: if ($udom && $uname && $file) {
14977: $file=~s|(\?\.*)*$||;
14978: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
14979: my $homeserver = &homeserver($uname,$udom);
14980: my $hostname = &hostname($homeserver);
14981: my $protocol = $protocol{$homeserver};
14982: $protocol = 'http' if ($protocol ne 'https');
14983: return $protocol.'://'.$hostname.'/'.$uri.
14984: (($uri=~/\?/)?'&':'?').'token='.$token.
14985: '&tokenissued='.$perlvar{'lonHostID'};
14986: } else {
14987: return '/adm/notfound.html';
14988: }
14989: }
14990:
14991: # call with reqtype HEAD: get last modification time
14992: # call with reqtype GET: get the file contents
14993: # Do not call this with reqtype GET for large files! It loads everything into memory
14994: #
14995: sub getuploaded {
14996: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
14997: $uri=~s/^\///;
14998: my $homeserver = &homeserver($cnum,$cdom);
14999: my $hostname = &hostname($homeserver);
15000: my $protocol = $protocol{$homeserver};
15001: $protocol = 'http' if ($protocol ne 'https');
15002: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
15003: my $request=new HTTP::Request($reqtype,$uri);
15004: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
15005: $$rtncode = $response->code;
15006: if (! $response->is_success()) {
15007: return 'failed';
15008: }
15009: if ($reqtype eq 'HEAD') {
15010: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
15011: } elsif ($reqtype eq 'GET') {
15012: $$info = $response->content;
15013: }
15014: return 'ok';
15015: }
15016:
15017: sub readfile {
15018: my $file = shift;
15019: if ( (! -e $file ) || ($file eq '') ) { return -1; };
15020: my $fh;
15021: open($fh,"<",$file);
15022: my $a='';
15023: while (my $line = <$fh>) { $a .= $line; }
15024: return $a;
15025: }
15026:
15027: sub filelocation {
15028: my ($dir,$file) = @_;
15029: my $location;
15030: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
15031:
15032: if ($file =~ m-^/adm/-) {
15033: $file=~s-^/adm/wrapper/-/-;
15034: $file=~s-^/adm/coursedocs/showdoc/-/-;
15035: }
15036:
15037: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
15038: $location = $file;
15039: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
15040: my ($udom,$uname,$filename)=
15041: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
15042: my $home=&homeserver($uname,$udom);
15043: my $is_me=0;
15044: my @ids=¤t_machine_ids();
15045: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
15046: if ($is_me) {
15047: $location=propath($udom,$uname).'/userfiles/'.$filename;
15048: } else {
15049: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
15050: $udom.'/'.$uname.'/'.$filename;
15051: }
15052: } elsif ($file =~ m-^/adm/-) {
15053: $location = $perlvar{'lonDocRoot'}.'/'.$file;
15054: } else {
15055: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
15056: $file=~s:^/(res|priv)/:/:;
15057: my $space=$1;
15058: if ( !( $file =~ m:^/:) ) {
15059: $location = $dir. '/'.$file;
15060: } else {
15061: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
15062: }
15063: }
15064: $location=~s://+:/:g; # remove duplicate /
15065: while ($location=~m{/\.\./}) {
15066: if ($location =~ m{/[^/]+/\.\./}) {
15067: $location=~ s{/[^/]+/\.\./}{/}g;
15068: } else {
15069: $location=~ s{/\.\./}{/}g;
15070: }
15071: } #remove dir/..
15072: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
15073: return $location;
15074: }
15075:
15076: sub hreflocation {
15077: my ($dir,$file)=@_;
15078: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
15079: $file=filelocation($dir,$file);
15080: } elsif ($file=~m-^/adm/-) {
15081: $file=~s-^/adm/wrapper/-/-;
15082: $file=~s-^/adm/coursedocs/showdoc/-/-;
15083: }
15084: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
15085: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
15086: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
15087: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
15088: {/uploaded/$1/$2/}x;
15089: }
15090: if ($file=~ m{^/userfiles/}) {
15091: $file =~ s{^/userfiles/}{/uploaded/};
15092: }
15093: return $file;
15094: }
15095:
15096:
15097:
15098:
15099:
15100: sub current_machine_domains {
15101: return &machine_domains(&hostname($perlvar{'lonHostID'}));
15102: }
15103:
15104: sub machine_domains {
15105: my ($hostname) = @_;
15106: my @domains;
15107: my %hostname = &all_hostnames();
15108: while( my($id, $name) = each(%hostname)) {
15109: # &logthis("-$id-$name-$hostname-");
15110: if ($hostname eq $name) {
15111: push(@domains,&host_domain($id));
15112: }
15113: }
15114: return @domains;
15115: }
15116:
15117: sub current_machine_ids {
15118: return &machine_ids(&hostname($perlvar{'lonHostID'}));
15119: }
15120:
15121: sub machine_ids {
15122: my ($hostname) = @_;
15123: $hostname ||= &hostname($perlvar{'lonHostID'});
15124: my @ids;
15125: my %name_to_host = &all_names();
15126: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
15127: return @{ $name_to_host{$hostname} };
15128: }
15129: return;
15130: }
15131:
15132: sub additional_machine_domains {
15133: my @domains;
15134: if (-e "$perlvar{'lonTabDir'}/expected_domains.tab") {
15135: if (open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab")) {
15136: while (my $line = <$fh>) {
15137: chomp($line);
15138: $line =~ s/\s//g;
15139: push(@domains,$line);
15140: }
15141: close($fh);
15142: }
15143: }
15144: return @domains;
15145: }
15146:
15147: sub default_login_domain {
15148: my $domain = $perlvar{'lonDefDomain'};
15149: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
15150: foreach my $posdom (¤t_machine_domains(),
15151: &additional_machine_domains()) {
15152: if (lc($posdom) eq lc($testdomain)) {
15153: $domain=$posdom;
15154: last;
15155: }
15156: }
15157: return $domain;
15158: }
15159:
15160: sub shared_institution {
15161: my ($dom,$lonhost) = @_;
15162: if ($lonhost eq '') {
15163: $lonhost = $perlvar{'lonHostID'};
15164: }
15165: my $same_intdom;
15166: my $hostintdom = &internet_dom($lonhost);
15167: if ($hostintdom ne '') {
15168: my %iphost = &get_iphost();
15169: my $primary_id = &domain($dom,'primary');
15170: my $primary_ip = &get_host_ip($primary_id);
15171: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
15172: foreach my $id (@{$iphost{$primary_ip}}) {
15173: my $intdom = &internet_dom($id);
15174: if ($intdom eq $hostintdom) {
15175: $same_intdom = 1;
15176: last;
15177: }
15178: }
15179: }
15180: }
15181: return $same_intdom;
15182: }
15183:
15184: sub uses_sts {
15185: my ($ignore_cache) = @_;
15186: my $lonhost = $perlvar{'lonHostID'};
15187: my $hostname = &hostname($lonhost);
15188: my $sts_on;
15189: if ($protocol{$lonhost} eq 'https') {
15190: my $cachetime = 12*3600;
15191: if (!$ignore_cache) {
15192: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
15193: if (defined($cached)) {
15194: return $sts_on;
15195: }
15196: }
15197: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
15198: my $request=new HTTP::Request('HEAD',$url);
15199: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
15200: if ($response->is_success) {
15201: my $has_sts = $response->header('Strict-Transport-Security');
15202: if ($has_sts eq '') {
15203: $sts_on = 0;
15204: } else {
15205: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
15206: my $maxage = $1;
15207: if ($maxage) {
15208: $sts_on = 1;
15209: } else {
15210: $sts_on = 0;
15211: }
15212: } else {
15213: $sts_on = 0;
15214: }
15215: }
15216: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
15217: }
15218: }
15219: return;
15220: }
15221:
15222: sub waf_allssl {
15223: my ($host_name) = @_;
15224: my $alias = &get_proxy_alias();
15225: if ($host_name eq '') {
15226: $host_name = $ENV{'SERVER_NAME'};
15227: }
15228: if (($host_name ne '') && ($alias eq $host_name)) {
15229: my $serverhomedom = &host_domain($perlvar{'lonHostID'});
15230: my %defdomdefaults = &get_domain_defaults($serverhomedom);
15231: if ($defdomdefaults{'waf_sslopt'}) {
15232: return $defdomdefaults{'waf_sslopt'};
15233: }
15234: }
15235: return;
15236: }
15237:
15238: sub get_requestor_ip {
15239: my ($r,$nolookup,$noproxy) = @_;
15240: my $from_ip;
15241: if (ref($r)) {
15242: if ($r->can('useragent_ip')) {
15243: if ($noproxy && $r->can('client_ip')) {
15244: $from_ip = $r->client_ip();
15245: } else {
15246: $from_ip = $r->useragent_ip();
15247: }
15248: } elsif ($r->connection->can('remote_ip')) {
15249: $from_ip = $r->connection->remote_ip();
15250: } else {
15251: $from_ip = $r->get_remote_host($nolookup);
15252: }
15253: } else {
15254: $from_ip = $ENV{'REMOTE_ADDR'};
15255: }
15256: return $from_ip if ($noproxy);
15257: # Who controls proxy settings for server
15258: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
15259: my $proxyinfo = &get_proxy_settings($dom_in_use);
15260: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
15261: if ($proxyinfo->{'vpnint'}) {
15262: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
15263: return $from_ip;
15264: }
15265: }
15266: if ($proxyinfo->{'trusted'}) {
15267: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
15268: my $ipheader = $proxyinfo->{'ipheader'};
15269: my ($ip,$xfor);
15270: if (ref($r)) {
15271: if ($ipheader) {
15272: $ip = $r->headers_in->{$ipheader};
15273: }
15274: $xfor = $r->headers_in->{'X-Forwarded-For'};
15275: } else {
15276: if ($ipheader) {
15277: $ip = $ENV{'HTTP_'.uc($ipheader)};
15278: }
15279: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
15280: }
15281: if (($ip eq '') && ($xfor ne '')) {
15282: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
15283: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
15284: $ip = $poss_ip;
15285: last;
15286: }
15287: }
15288: }
15289: if ($ip ne '') {
15290: return $ip;
15291: }
15292: }
15293: }
15294: }
15295: return $from_ip;
15296: }
15297:
15298: sub get_proxy_settings {
15299: my ($dom_in_use) = @_;
15300: my %domdefaults = &get_domain_defaults($dom_in_use);
15301: my $proxyinfo = {
15302: ipheader => $domdefaults{'waf_ipheader'},
15303: trusted => $domdefaults{'waf_trusted'},
15304: vpnint => $domdefaults{'waf_vpnint'},
15305: vpnext => $domdefaults{'waf_vpnext'},
15306: sslopt => $domdefaults{'waf_sslopt'},
15307: };
15308: return $proxyinfo;
15309: }
15310:
15311: sub ip_match {
15312: my ($ip,$pattern_str) = @_;
15313: $ip=Net::CIDR::cidrvalidate($ip);
15314: if ($ip) {
15315: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
15316: }
15317: return;
15318: }
15319:
15320: sub get_proxy_alias {
15321: my ($lonid) = @_;
15322: if ($lonid eq '') {
15323: $lonid = $perlvar{'lonHostID'};
15324: }
15325: if (!defined(&hostname($lonid))) {
15326: return;
15327: }
15328: if ($lonid ne '') {
15329: my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
15330: if ($cached) {
15331: return $alias;
15332: }
15333: my $dom = &host_domain($lonid);
15334: if ($dom ne '') {
15335: my $cachetime = 60*60*24;
15336: my %domconfig =
15337: &get_dom('configuration',['wafproxy'],$dom);
15338: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15339: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
15340: $alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
15341: }
15342: }
15343: return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
15344: }
15345: }
15346: return;
15347: }
15348:
15349: sub use_proxy_alias {
15350: my ($r,$lonid) = @_;
15351: my $alias = &get_proxy_alias($lonid);
15352: if ($alias) {
15353: my $dom = &host_domain($lonid);
15354: if ($dom ne '') {
15355: my $proxyinfo = &get_proxy_settings($dom);
15356: my ($vpnint,$remote_ip);
15357: if (ref($proxyinfo) eq 'HASH') {
15358: $vpnint = $proxyinfo->{'vpnint'};
15359: if ($vpnint) {
15360: $remote_ip = &get_requestor_ip($r,1,1);
15361: }
15362: }
15363: unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
15364: return $alias;
15365: }
15366: }
15367: }
15368: return;
15369: }
15370:
15371: sub alias_sso {
15372: my ($lonid) = @_;
15373: if ($lonid eq '') {
15374: $lonid = $perlvar{'lonHostID'};
15375: }
15376: if (!defined(&hostname($lonid))) {
15377: return;
15378: }
15379: if ($lonid ne '') {
15380: my ($use_alias,$cached) = &is_cached_new('proxysaml',$lonid);
15381: if ($cached) {
15382: return $use_alias;
15383: }
15384: my $dom = &host_domain($lonid);
15385: if ($dom ne '') {
15386: my $cachetime = 60*60*24;
15387: my %domconfig =
15388: &get_dom('configuration',['wafproxy'],$dom);
15389: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15390: if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
15391: $use_alias = $domconfig{'wafproxy'}{'saml'}{$lonid};
15392: }
15393: }
15394: return &do_cache_new('proxysaml',$lonid,$use_alias,$cachetime);
15395: }
15396: }
15397: return;
15398: }
15399:
15400: sub get_saml_landing {
15401: my ($lonid) = @_;
15402: if ($lonid eq '') {
15403: my $defdom = &default_login_domain();
15404: my @hosts = ¤t_machine_ids();
15405: if (@hosts > 1) {
15406: foreach my $hostid (@hosts) {
15407: if (&host_domain($hostid) eq $defdom) {
15408: $lonid = $hostid;
15409: last;
15410: }
15411: }
15412: } else {
15413: $lonid = $perlvar{'lonHostID'};
15414: }
15415: if ($lonid) {
15416: unless (&host_domain($lonid) eq $defdom) {
15417: return;
15418: }
15419: } else {
15420: return;
15421: }
15422: } elsif (!defined(&hostname($lonid))) {
15423: return;
15424: }
15425: my ($landing,$cached) = &is_cached_new('samllanding',$lonid);
15426: if ($cached) {
15427: return $landing;
15428: }
15429: my $dom = &host_domain($lonid);
15430: if ($dom ne '') {
15431: my $cachetime = 60*60*24;
15432: my %domconfig =
15433: &get_dom('configuration',['login'],$dom);
15434: if (ref($domconfig{'login'}) eq 'HASH') {
15435: if (ref($domconfig{'login'}{'saml'}) eq 'HASH') {
15436: if (ref($domconfig{'login'}{'saml'}{$lonid}) eq 'HASH') {
15437: $landing = 1;
15438: }
15439: }
15440: }
15441: return &do_cache_new('samllanding',$lonid,$landing,$cachetime);
15442: }
15443: return;
15444: }
15445:
15446: # ------------------------------------------------------------- Declutters URLs
15447:
15448: sub declutter {
15449: my $thisfn=shift;
15450: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
15451: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
15452: $thisfn=~s{^/home/httpd/html}{};
15453: }
15454: $thisfn=~s/^\///;
15455: $thisfn=~s|^adm/wrapper/||;
15456: $thisfn=~s|^adm/coursedocs/showdoc/||;
15457: $thisfn=~s/^res\///;
15458: $thisfn=~s/^priv\///;
15459: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
15460: $thisfn=~s/\?.+$//;
15461: }
15462: return $thisfn;
15463: }
15464:
15465: # ------------------------------------------------------------- Clutter up URLs
15466:
15467: sub clutter {
15468: my $thisfn='/'.&declutter(shift);
15469: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
15470: || $thisfn =~ m{^/adm/(includes|pages)} ) {
15471: $thisfn='/res'.$thisfn;
15472: }
15473: if ($thisfn !~m|^/adm|) {
15474: if ($thisfn =~ m|^/ext/|) {
15475: $thisfn='/adm/wrapper'.$thisfn;
15476: } else {
15477: my ($ext) = ($thisfn =~ /\.(\w+)$/);
15478: my $embstyle=&Apache::loncommon::fileembstyle($ext);
15479: if ($embstyle eq 'ssi'
15480: || ($embstyle eq 'hdn')
15481: || ($embstyle eq 'rat')
15482: || ($embstyle eq 'prv')
15483: || ($embstyle eq 'ign')) {
15484: #do nothing with these
15485: } elsif (($embstyle eq 'img')
15486: || ($embstyle eq 'emb')
15487: || ($embstyle eq 'wrp')) {
15488: $thisfn='/adm/wrapper'.$thisfn;
15489: } elsif ($embstyle eq 'unk'
15490: && $thisfn!~/\.(sequence|page)$/) {
15491: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
15492: } else {
15493: # &logthis("Got a blank emb style");
15494: }
15495: }
15496: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
15497: $thisfn='/adm/wrapper'.$thisfn;
15498: }
15499: return $thisfn;
15500: }
15501:
15502: sub clutter_with_no_wrapper {
15503: my $uri = &clutter(shift);
15504: if ($uri =~ m-^/adm/-) {
15505: $uri =~ s-^/adm/wrapper/-/-;
15506: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
15507: }
15508: return $uri;
15509: }
15510:
15511: sub freeze_escape {
15512: my ($value)=@_;
15513: if (ref($value)) {
15514: $value=&nfreeze($value);
15515: return '__FROZEN__'.&escape($value);
15516: }
15517: return &escape($value);
15518: }
15519:
15520:
15521: sub thaw_unescape {
15522: my ($value)=@_;
15523: if ($value =~ /^__FROZEN__/) {
15524: substr($value,0,10,undef);
15525: $value=&unescape($value);
15526: return &thaw($value);
15527: }
15528: return &unescape($value);
15529: }
15530:
15531: sub correct_line_ends {
15532: my ($result)=@_;
15533: $$result =~s/\r\n/\n/mg;
15534: $$result =~s/\r/\n/mg;
15535: }
15536: # ================================================================ Main Program
15537:
15538: sub goodbye {
15539: &logthis("Starting Shut down");
15540: #not converted to using infrastruture and probably shouldn't be
15541: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
15542: #converted
15543: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
15544: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
15545: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
15546: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
15547: #1.1 only
15548: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
15549: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
15550: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
15551: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
15552: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
15553: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
15554: &logthis(sprintf("%-20s is %s",'hits',$hits));
15555: &flushcourselogs();
15556: &logthis("Shutting down");
15557: }
15558:
15559: sub get_dns {
15560: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
15561: if (!$ignore_cache) {
15562: my ($content,$cached)=
15563: &is_cached_new('dns',$url);
15564: if ($cached) {
15565: &$func($content,$hashref);
15566: return;
15567: }
15568: }
15569:
15570: my %alldns;
15571: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
15572: foreach my $dns (<$config>) {
15573: next if ($dns !~ /^\^(\S*)/x);
15574: my $line = $1;
15575: my ($host,$protocol) = split(/:/,$line);
15576: if ($protocol ne 'https') {
15577: $protocol = 'http';
15578: }
15579: $alldns{$host} = $protocol;
15580: }
15581: close($config);
15582: }
15583: while (%alldns) {
15584: my ($dns) = sort { $b cmp $a } keys(%alldns);
15585: my ($contents,@content);
15586: if ($dns eq Sys::Hostname::FQDN::fqdn()) {
15587: my $command = (split('/',$url))[3];
15588: my ($dir,$file) = &parse_getdns_url($command,$url);
15589: delete($alldns{$dns});
15590: next if (($dir eq '') || ($file eq ''));
15591: if (open(my $config,'<',"$dir/$file")) {
15592: @content = <$config>;
15593: close($config);
15594: }
15595: if ($url eq '/adm/dns/loncapaCRL') {
15596: $contents = join('',@content);
15597: }
15598: } else {
15599: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
15600: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
15601: delete($alldns{$dns});
15602: next if ($response->is_error());
15603: if ($url eq '/adm/dns/loncapaCRL') {
15604: $contents = $response->content;
15605: } else {
15606: @content = split("\n",$response->content);
15607: }
15608: }
15609: if ($url eq '/adm/dns/loncapaCRL') {
15610: return &$func($contents);
15611: } else {
15612: unless ($nocache) {
15613: &do_cache_new('dns',$url,\@content,30*24*60*60);
15614: }
15615: &$func(\@content,$hashref);
15616: return;
15617: }
15618: }
15619: my $which = (split('/',$url,4))[3];
15620: if ($which eq 'loncapaCRL') {
15621: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15622: if (-e $diskfile) {
15623: &logthis("unable to contact DNS, on disk file $diskfile not updated");
15624: } else {
15625: &logthis("unable to contact DNS, no on disk file $diskfile available");
15626: }
15627: } else {
15628: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
15629: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
15630: my @content = <$config>;
15631: close($config);
15632: &$func(\@content,$hashref);
15633: }
15634: }
15635: return;
15636: }
15637:
15638: # ------------------------------------------------------Get DNS checksums file
15639: sub parse_dns_checksums_tab {
15640: my ($lines,$hashref) = @_;
15641: my $lonhost = $perlvar{'lonHostID'};
15642: my $machine_dom = &host_domain($lonhost);
15643: my $loncaparev = &get_server_loncaparev($machine_dom);
15644: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
15645: my $webconfdir = '/etc/httpd/conf';
15646: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
15647: $webconfdir = '/etc/apache2';
15648: } elsif ($distro =~ /^sles(\d+)$/) {
15649: if ($1 >= 10) {
15650: $webconfdir = '/etc/apache2';
15651: }
15652: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
15653: if ($1 >= 10.0) {
15654: $webconfdir = '/etc/apache2';
15655: }
15656: }
15657: my ($release,$timestamp) = split(/\-/,$loncaparev);
15658: my (%chksum,%revnum);
15659: if (ref($lines) eq 'ARRAY') {
15660: chomp(@{$lines});
15661: my $version = shift(@{$lines});
15662: if ($version eq $release) {
15663: foreach my $line (@{$lines}) {
15664: my ($file,$version,$shasum) = split(/,/,$line);
15665: if ($file =~ m{^/etc/httpd/conf}) {
15666: if ($webconfdir eq '/etc/apache2') {
15667: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
15668: }
15669: }
15670: $chksum{$file} = $shasum;
15671: $revnum{$file} = $version;
15672: }
15673: if (ref($hashref) eq 'HASH') {
15674: %{$hashref} = (
15675: sums => \%chksum,
15676: versions => \%revnum,
15677: );
15678: }
15679: }
15680: }
15681: return;
15682: }
15683:
15684: sub fetch_dns_checksums {
15685: my %checksums;
15686: my $machine_dom = &host_domain($perlvar{'lonHostID'});
15687: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
15688: my ($release,$timestamp) = split(/\-/,$loncaparev);
15689: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
15690: \%checksums);
15691: return \%checksums;
15692: }
15693:
15694: sub fetch_crl_pemfile {
15695: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
15696: }
15697:
15698: sub save_crl_pem {
15699: my ($content) = @_;
15700: my ($msg,$hadchanges);
15701: if ($content ne '') {
15702: my $now = time;
15703: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
15704: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
15705: if (open(my $fh,'>',"$tmpcrl")) {
15706: print $fh $content;
15707: close($fh);
15708: if (-e $lonca) {
15709: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
15710: my $check = <PIPE>;
15711: close(PIPE);
15712: chomp($check);
15713: if ($check eq 'verify OK') {
15714: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15715: my $backup;
15716: if (-e $dest) {
15717: if (&File::Copy::move($dest,"$dest.bak")) {
15718: $backup = 'ok';
15719: }
15720: }
15721: if (&File::Copy::move($tmpcrl,$dest)) {
15722: $msg = 'ok';
15723: if ($backup) {
15724: my (%oldnums,%newnums);
15725: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
15726: while (<PIPE>) {
15727: $oldnums{(split(/:/))[1]} = 1;
15728: }
15729: close(PIPE);
15730: }
15731: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
15732: while(<PIPE>) {
15733: $newnums{(split(/:/))[1]} = 1;
15734: }
15735: close(PIPE);
15736: }
15737: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
15738: unless (exists($oldnums{$key})) {
15739: $hadchanges = 1;
15740: last;
15741: }
15742: }
15743: unless ($hadchanges) {
15744: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
15745: unless (exists($newnums{$key})) {
15746: $hadchanges = 1;
15747: last;
15748: }
15749: }
15750: }
15751: }
15752: }
15753: } else {
15754: unlink($tmpcrl);
15755: }
15756: } else {
15757: unlink($tmpcrl);
15758: }
15759: } else {
15760: unlink($tmpcrl);
15761: }
15762: }
15763: }
15764: return ($msg,$hadchanges);
15765: }
15766:
15767: sub parse_getdns_url {
15768: my ($command,$url) = @_;
15769: my $dir = $perlvar{'lonTabDir'};
15770: my $file;
15771: if ($command eq 'hosts') {
15772: $file = 'dns_hosts.tab';
15773: } elsif ($command eq 'domain') {
15774: $file = 'dns_domain.tab';
15775: } elsif ($command eq 'checksums') {
15776: my $version = (split('/',$url))[4];
15777: $file = "dns_checksums/$version.tab",
15778: } elsif ($command eq 'loncapaCRL') {
15779: $dir = $perlvar{'lonCertificateDirectory'};
15780: $file = $perlvar{'lonnetCertRevocationList'};
15781: }
15782: return ($dir,$file);
15783: }
15784:
15785: # ------------------------------------------------------------ Read domain file
15786: {
15787: my $loaded;
15788: my %domain;
15789:
15790: sub parse_domain_tab {
15791: my ($lines) = @_;
15792: foreach my $line (@$lines) {
15793: next if ($line =~ /^(\#|\s*$ )/x);
15794:
15795: chomp($line);
15796: my ($name,@elements) = split(/:/,$line,9);
15797: my %this_domain;
15798: foreach my $field ('description', 'auth_def', 'auth_arg_def',
15799: 'lang_def', 'city', 'longi', 'lati',
15800: 'primary') {
15801: $this_domain{$field} = shift(@elements);
15802: }
15803: $domain{$name} = \%this_domain;
15804: }
15805: }
15806:
15807: sub reset_domain_info {
15808: undef($loaded);
15809: undef(%domain);
15810: }
15811:
15812: sub load_domain_tab {
15813: my ($ignore_cache,$nocache) = @_;
15814: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
15815: my $fh;
15816: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
15817: my @lines = <$fh>;
15818: &parse_domain_tab(\@lines);
15819: }
15820: close($fh);
15821: $loaded = 1;
15822: }
15823:
15824: sub domain {
15825: &load_domain_tab() if (!$loaded);
15826:
15827: my ($name,$what) = @_;
15828: return if ( !exists($domain{$name}) );
15829:
15830: if (!$what) {
15831: return $domain{$name}{'description'};
15832: }
15833: return $domain{$name}{$what};
15834: }
15835:
15836: sub domain_info {
15837: &load_domain_tab() if (!$loaded);
15838: return %domain;
15839: }
15840:
15841: }
15842:
15843:
15844: # ------------------------------------------------------------- Read hosts file
15845: {
15846: my %hostname;
15847: my %hostdom;
15848: my %libserv;
15849: my $loaded;
15850: my %name_to_host;
15851: my %internetdom;
15852: my %LC_dns_serv;
15853:
15854: sub parse_hosts_tab {
15855: my ($file) = @_;
15856: foreach my $configline (@$file) {
15857: next if ($configline =~ /^(\#|\s*$ )/x);
15858: chomp($configline);
15859: if ($configline =~ /^\^/) {
15860: if ($configline =~ /^\^([\w.\-]+)/) {
15861: $LC_dns_serv{$1} = 1;
15862: }
15863: next;
15864: }
15865: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
15866: $name=~s/\s//g;
15867: if ($id && $domain && $role && $name) {
15868: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
15869: my $curr = $hostname{$id};
15870: my $skip;
15871: if (ref($name_to_host{$curr}) eq 'ARRAY') {
15872: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
15873: $skip = 1;
15874: } else {
15875: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
15876: }
15877: }
15878: unless ($skip) {
15879: push(@{$name_to_host{$name}},$id);
15880: }
15881: } else {
15882: push(@{$name_to_host{$name}},$id);
15883: }
15884: $hostname{$id}=$name;
15885: $hostdom{$id}=$domain;
15886: if ($role eq 'library') { $libserv{$id}=$name; }
15887: if (defined($protocol)) {
15888: if ($protocol eq 'https') {
15889: $protocol{$id} = $protocol;
15890: } else {
15891: $protocol{$id} = 'http';
15892: }
15893: } else {
15894: $protocol{$id} = 'http';
15895: }
15896: if (defined($intdom)) {
15897: $internetdom{$id} = $intdom;
15898: }
15899: }
15900: }
15901: }
15902:
15903: sub reset_hosts_info {
15904: &purge_remembered();
15905: &reset_domain_info();
15906: &reset_hosts_ip_info();
15907: undef(%internetdom);
15908: undef(%name_to_host);
15909: undef(%hostname);
15910: undef(%hostdom);
15911: undef(%libserv);
15912: undef($loaded);
15913: }
15914:
15915: sub load_hosts_tab {
15916: my ($ignore_cache,$nocache) = @_;
15917: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
15918: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
15919: my @config = <$config>;
15920: &parse_hosts_tab(\@config);
15921: close($config);
15922: $loaded=1;
15923: }
15924:
15925: sub hostname {
15926: &load_hosts_tab() if (!$loaded);
15927:
15928: my ($lonid) = @_;
15929: return $hostname{$lonid};
15930: }
15931:
15932: sub all_hostnames {
15933: &load_hosts_tab() if (!$loaded);
15934:
15935: return %hostname;
15936: }
15937:
15938: sub all_names {
15939: my ($ignore_cache,$nocache) = @_;
15940: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
15941:
15942: return %name_to_host;
15943: }
15944:
15945: sub all_host_domain {
15946: &load_hosts_tab() if (!$loaded);
15947: return %hostdom;
15948: }
15949:
15950: sub all_host_intdom {
15951: &load_hosts_tab() if (!$loaded);
15952: return %internetdom;
15953: }
15954:
15955: sub is_library {
15956: &load_hosts_tab() if (!$loaded);
15957:
15958: return exists($libserv{$_[0]});
15959: }
15960:
15961: sub all_library {
15962: &load_hosts_tab() if (!$loaded);
15963:
15964: return %libserv;
15965: }
15966:
15967: sub unique_library {
15968: #2x reverse removes all hostnames that appear more than once
15969: my %unique = reverse &all_library();
15970: return reverse %unique;
15971: }
15972:
15973: sub get_servers {
15974: &load_hosts_tab() if (!$loaded);
15975:
15976: my ($domain,$type) = @_;
15977: my %possible_hosts = ($type eq 'library') ? %libserv
15978: : %hostname;
15979: my %result;
15980: if (ref($domain) eq 'ARRAY') {
15981: while ( my ($host,$hostname) = each(%possible_hosts)) {
15982: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
15983: $result{$host} = $hostname;
15984: }
15985: }
15986: } else {
15987: while ( my ($host,$hostname) = each(%possible_hosts)) {
15988: if ($hostdom{$host} eq $domain) {
15989: $result{$host} = $hostname;
15990: }
15991: }
15992: }
15993: return %result;
15994: }
15995:
15996: sub get_unique_servers {
15997: my %unique = reverse &get_servers(@_);
15998: return reverse %unique;
15999: }
16000:
16001: sub host_domain {
16002: &load_hosts_tab() if (!$loaded);
16003:
16004: my ($lonid) = @_;
16005: return $hostdom{$lonid};
16006: }
16007:
16008: sub all_domains {
16009: &load_hosts_tab() if (!$loaded);
16010:
16011: my %seen;
16012: my @uniq = grep(!$seen{$_}++, values(%hostdom));
16013: return @uniq;
16014: }
16015:
16016: sub internet_dom {
16017: &load_hosts_tab() if (!$loaded);
16018:
16019: my ($lonid) = @_;
16020: return $internetdom{$lonid};
16021: }
16022:
16023: sub is_LC_dns {
16024: &load_hosts_tab() if (!$loaded);
16025:
16026: my ($hostname) = @_;
16027: return exists($LC_dns_serv{$hostname});
16028: }
16029:
16030: }
16031:
16032: {
16033: my %iphost;
16034: my %name_to_ip;
16035: my %lonid_to_ip;
16036:
16037: sub get_hosts_from_ip {
16038: my ($ip) = @_;
16039: my %iphosts = &get_iphost();
16040: if (ref($iphosts{$ip})) {
16041: return @{$iphosts{$ip}};
16042: }
16043: return;
16044: }
16045:
16046: sub reset_hosts_ip_info {
16047: undef(%iphost);
16048: undef(%name_to_ip);
16049: undef(%lonid_to_ip);
16050: }
16051:
16052: sub get_host_ip {
16053: my ($lonid) = @_;
16054: if (exists($lonid_to_ip{$lonid})) {
16055: return $lonid_to_ip{$lonid};
16056: }
16057: my $name=&hostname($lonid);
16058: my $ip = gethostbyname($name);
16059: return if (!$ip || length($ip) ne 4);
16060: $ip=inet_ntoa($ip);
16061: $name_to_ip{$name} = $ip;
16062: $lonid_to_ip{$lonid} = $ip;
16063: return $ip;
16064: }
16065:
16066: sub get_iphost {
16067: my ($ignore_cache,$nocache) = @_;
16068:
16069: if (!$ignore_cache) {
16070: if (%iphost) {
16071: return %iphost;
16072: }
16073: my ($ip_info,$cached)=
16074: &is_cached_new('iphost','iphost');
16075: if ($cached) {
16076: %iphost = %{$ip_info->[0]};
16077: %name_to_ip = %{$ip_info->[1]};
16078: %lonid_to_ip = %{$ip_info->[2]};
16079: return %iphost;
16080: }
16081: }
16082:
16083: # get yesterday's info for fallback
16084: my %old_name_to_ip;
16085: my ($ip_info,$cached)=
16086: &is_cached_new('iphost','iphost');
16087: if ($cached) {
16088: %old_name_to_ip = %{$ip_info->[1]};
16089: }
16090:
16091: my %name_to_host = &all_names($ignore_cache,$nocache);
16092: foreach my $name (keys(%name_to_host)) {
16093: my $ip;
16094: if (!exists($name_to_ip{$name})) {
16095: $ip = gethostbyname($name);
16096: if (!$ip || length($ip) ne 4) {
16097: if (defined($old_name_to_ip{$name})) {
16098: $ip = $old_name_to_ip{$name};
16099: &logthis("Can't find $name defaulting to old $ip");
16100: } else {
16101: &logthis("Name $name no IP found");
16102: next;
16103: }
16104: } else {
16105: $ip=inet_ntoa($ip);
16106: }
16107: $name_to_ip{$name} = $ip;
16108: } else {
16109: $ip = $name_to_ip{$name};
16110: }
16111: foreach my $id (@{ $name_to_host{$name} }) {
16112: $lonid_to_ip{$id} = $ip;
16113: }
16114: push(@{$iphost{$ip}},@{$name_to_host{$name}});
16115: }
16116: unless ($nocache) {
16117: &do_cache_new('iphost','iphost',
16118: [\%iphost,\%name_to_ip,\%lonid_to_ip],
16119: 48*60*60);
16120: }
16121:
16122: return %iphost;
16123: }
16124:
16125: #
16126: # Given a DNS returns the loncapa host name for that DNS
16127: #
16128: sub host_from_dns {
16129: my ($dns) = @_;
16130: my @hosts;
16131: my $ip;
16132:
16133: if (exists($name_to_ip{$dns})) {
16134: $ip = $name_to_ip{$dns};
16135: }
16136: if (!$ip) {
16137: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
16138: if (length($ip) == 4) {
16139: $ip = &IO::Socket::inet_ntoa($ip);
16140: }
16141: }
16142: if ($ip) {
16143: @hosts = get_hosts_from_ip($ip);
16144: return $hosts[0];
16145: }
16146: return undef;
16147: }
16148:
16149: sub get_internet_names {
16150: my ($lonid) = @_;
16151: return if ($lonid eq '');
16152: my ($idnref,$cached)=
16153: &is_cached_new('internetnames',$lonid);
16154: if ($cached) {
16155: return $idnref;
16156: }
16157: my $ip = &get_host_ip($lonid);
16158: my @hosts = &get_hosts_from_ip($ip);
16159: my %iphost = &get_iphost();
16160: my (@idns,%seen);
16161: foreach my $id (@hosts) {
16162: my $dom = &host_domain($id);
16163: my $prim_id = &domain($dom,'primary');
16164: my $prim_ip = &get_host_ip($prim_id);
16165: next if ($seen{$prim_ip});
16166: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
16167: foreach my $id (@{$iphost{$prim_ip}}) {
16168: my $intdom = &internet_dom($id);
16169: unless (grep(/^\Q$intdom\E$/,@idns)) {
16170: push(@idns,$intdom);
16171: }
16172: }
16173: }
16174: $seen{$prim_ip} = 1;
16175: }
16176: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
16177: }
16178:
16179: }
16180:
16181: sub all_loncaparevs {
16182: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
16183: }
16184:
16185: # ---------------------------------------------------------- Read loncaparev table
16186: {
16187: sub load_loncaparevs {
16188: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
16189: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
16190: while (my $configline=<$config>) {
16191: chomp($configline);
16192: my ($hostid,$loncaparev)=split(/:/,$configline);
16193: $loncaparevs{$hostid}=$loncaparev;
16194: }
16195: close($config);
16196: }
16197: }
16198: }
16199: }
16200:
16201: # ---------------------------------------------------------- Read serverhostID table
16202: {
16203: sub load_serverhomeIDs {
16204: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
16205: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
16206: while (my $configline=<$config>) {
16207: chomp($configline);
16208: my ($name,$id)=split(/:/,$configline);
16209: $serverhomeIDs{$name}=$id;
16210: }
16211: close($config);
16212: }
16213: }
16214: }
16215: }
16216:
16217:
16218: BEGIN {
16219:
16220: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
16221: unless ($readit) {
16222: {
16223: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
16224: %perlvar = (%perlvar,%{$configvars});
16225: }
16226:
16227:
16228: # ------------------------------------------------------ Read spare server file
16229: {
16230: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
16231:
16232: while (my $configline=<$config>) {
16233: chomp($configline);
16234: if ($configline) {
16235: my ($host,$type) = split(':',$configline,2);
16236: if (!defined($type) || $type eq '') { $type = 'default' };
16237: push(@{ $spareid{$type} }, $host);
16238: }
16239: }
16240: close($config);
16241: }
16242: # ------------------------------------------------------------ Read permissions
16243: {
16244: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
16245:
16246: while (my $configline=<$config>) {
16247: chomp($configline);
16248: if ($configline) {
16249: my ($role,$perm)=split(/ /,$configline);
16250: if ($perm ne '') { $pr{$role}=$perm; }
16251: }
16252: }
16253: close($config);
16254: }
16255:
16256: # -------------------------------------------- Read plain texts for permissions
16257: {
16258: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
16259:
16260: while (my $configline=<$config>) {
16261: chomp($configline);
16262: if ($configline) {
16263: my ($short,@plain)=split(/:/,$configline);
16264: %{$prp{$short}} = ();
16265: if (@plain > 0) {
16266: $prp{$short}{'std'} = $plain[0];
16267: for (my $i=1; $i<@plain; $i++) {
16268: $prp{$short}{'alt'.$i} = $plain[$i];
16269: }
16270: }
16271: }
16272: }
16273: close($config);
16274: }
16275:
16276: # ---------------------------------------------------------- Read package table
16277: {
16278: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
16279:
16280: while (my $configline=<$config>) {
16281: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
16282: chomp($configline);
16283: my ($short,$plain)=split(/:/,$configline);
16284: my ($pack,$name)=split(/\&/,$short);
16285: if ($plain ne '') {
16286: $packagetab{$pack.'&'.$name.'&name'}=$name;
16287: $packagetab{$short}=$plain;
16288: }
16289: }
16290: close($config);
16291: }
16292:
16293: # ---------------------------------------------------------- Read loncaparev table
16294:
16295: &load_loncaparevs();
16296:
16297: # ---------------------------------------------------------- Read serverhostID table
16298:
16299: &load_serverhomeIDs();
16300:
16301: # ---------------------------------------------------------- Read releaseslist XML
16302: {
16303: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
16304: if (-e $file) {
16305: my $parser = HTML::LCParser->new($file);
16306: while (my $token = $parser->get_token()) {
16307: if ($token->[0] eq 'S') {
16308: my $item = $token->[1];
16309: my $name = $token->[2]{'name'};
16310: my $value = $token->[2]{'value'};
16311: my $valuematch = $token->[2]{'valuematch'};
16312: my $namematch = $token->[2]{'namematch'};
16313: if ($item eq 'parameter') {
16314: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
16315: my $release = $parser->get_text();
16316: $release =~ s/(^\s*|\s*$ )//gx;
16317: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
16318: }
16319: } elsif ($item ne '' && $name ne '') {
16320: my $release = $parser->get_text();
16321: $release =~ s/(^\s*|\s*$ )//gx;
16322: $needsrelease{$item.':'.$name.':'.$value} = $release;
16323: }
16324: }
16325: }
16326: }
16327: }
16328:
16329: # ---------------------------------------------------------- Read managers table
16330: {
16331: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
16332: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
16333: while (my $configline=<$config>) {
16334: chomp($configline);
16335: next if ($configline =~ /^\#/);
16336: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
16337: $managerstab{$configline} = 1;
16338: }
16339: }
16340: close($config);
16341: }
16342: }
16343: }
16344:
16345: # ------------- set up temporary directory
16346: {
16347: $tmpdir = LONCAPA::tempdir();
16348:
16349: }
16350:
16351: # ------------- set default texengine (domain default overrides this)
16352: {
16353: $deftex = LONCAPA::texengine();
16354: }
16355:
16356: # ------------- set default minimum length for passwords for internal auth users
16357: {
16358: $passwdmin = LONCAPA::passwd_min();
16359: }
16360:
16361: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
16362: 'compress_threshold'=> 20_000,
16363: });
16364:
16365: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
16366: $dumpcount=0;
16367: $locknum=0;
16368:
16369: &logtouch();
16370: &logthis('<font color="yellow">INFO: Read configuration</font>');
16371: $readit=1;
16372: {
16373: use integer;
16374: my $test=(2**32)+1;
16375: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
16376: &logthis(" Detected 64bit platform ($_64bit)");
16377: }
16378: }
16379: }
16380:
16381: 1;
16382: __END__
16383:
16384: =pod
16385:
16386: =head1 NAME
16387:
16388: Apache::lonnet - Subroutines to ask questions about things in the network.
16389:
16390: =head1 SYNOPSIS
16391:
16392: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
16393:
16394: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
16395:
16396: Common parameters:
16397:
16398: =over 4
16399:
16400: =item *
16401:
16402: $uname : an internal username (if $cname expecting a course Id specifically)
16403:
16404: =item *
16405:
16406: $udom : a domain (if $cdom expecting a course's domain specifically)
16407:
16408: =item *
16409:
16410: $symb : a resource instance identifier
16411:
16412: =item *
16413:
16414: $namespace : the name of a .db file that contains the data needed or
16415: being set.
16416:
16417: =back
16418:
16419: =head1 OVERVIEW
16420:
16421: lonnet provides subroutines which interact with the
16422: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
16423: about classes, users, and resources.
16424:
16425: For many of these objects you can also use this to store data about
16426: them or modify them in various ways.
16427:
16428: =head2 Symbs
16429:
16430: To identify a specific instance of a resource, LON-CAPA uses symbols
16431: or "symbs"X<symb>. These identifiers are built from the URL of the
16432: map, the resource number of the resource in the map, and the URL of
16433: the resource itself. The latter is somewhat redundant, but might help
16434: if maps change.
16435:
16436: An example is
16437:
16438: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
16439:
16440: The respective map entry is
16441:
16442: <resource id="19" src="/res/msu/korte/tests/part12.problem"
16443: title="Problem 2">
16444: </resource>
16445:
16446: Symbs are used by the random number generator, as well as to store and
16447: restore data specific to a certain instance of for example a problem.
16448:
16449: =head2 Storing And Retrieving Data
16450:
16451: X<store()>X<cstore()>X<restore()>Three of the most important functions
16452: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
16453: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
16454: is is the non-critical message twin of cstore. These functions are for
16455: handlers to store a perl hash to a user's permanent data space in an
16456: easy manner, and to retrieve it again on another call. It is expected
16457: that a handler would use this once at the beginning to retrieve data,
16458: and then again once at the end to send only the new data back.
16459:
16460: The data is stored in the user's data directory on the user's
16461: homeserver under the ID of the course.
16462:
16463: The hash that is returned by restore will have all of the previous
16464: value for all of the elements of the hash.
16465:
16466: Example:
16467:
16468: #creating a hash
16469: my %hash;
16470: $hash{'foo'}='bar';
16471:
16472: #storing it
16473: &Apache::lonnet::cstore(\%hash);
16474:
16475: #changing a value
16476: $hash{'foo'}='notbar';
16477:
16478: #adding a new value
16479: $hash{'bar'}='foo';
16480: &Apache::lonnet::cstore(\%hash);
16481:
16482: #retrieving the hash
16483: my %history=&Apache::lonnet::restore();
16484:
16485: #print the hash
16486: foreach my $key (sort(keys(%history))) {
16487: print("\%history{$key} = $history{$key}");
16488: }
16489:
16490: Will print out:
16491:
16492: %history{1:foo} = bar
16493: %history{1:keys} = foo:timestamp
16494: %history{1:timestamp} = 990455579
16495: %history{2:bar} = foo
16496: %history{2:foo} = notbar
16497: %history{2:keys} = foo:bar:timestamp
16498: %history{2:timestamp} = 990455580
16499: %history{bar} = foo
16500: %history{foo} = notbar
16501: %history{timestamp} = 990455580
16502: %history{version} = 2
16503:
16504: Note that the special hash entries C<keys>, C<version> and
16505: C<timestamp> were added to the hash. C<version> will be equal to the
16506: total number of versions of the data that have been stored. The
16507: C<timestamp> attribute will be the UNIX time the hash was
16508: stored. C<keys> is available in every historical section to list which
16509: keys were added or changed at a specific historical revision of a
16510: hash.
16511:
16512: B<Warning>: do not store the hash that restore returns directly. This
16513: will cause a mess since it will restore the historical keys as if the
16514: were new keys. I.E. 1:foo will become 1:1:foo etc.
16515:
16516: Calling convention:
16517:
16518: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
16519: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
16520:
16521: For more detailed information, see lonnet specific documentation.
16522:
16523: =head1 RETURN MESSAGES
16524:
16525: =over 4
16526:
16527: =item * B<con_lost>: unable to contact remote host
16528:
16529: =item * B<con_delayed>: unable to contact remote host, message will be delivered
16530: when the connection is brought back up
16531:
16532: =item * B<con_failed>: unable to contact remote host and unable to save message
16533: for later delivery
16534:
16535: =item * B<error:>: an error a occurred, a description of the error follows the :
16536:
16537: =item * B<no_such_host>: unable to fund a host associated with the user/domain
16538: that was requested
16539:
16540: =back
16541:
16542: =head1 PUBLIC SUBROUTINES
16543:
16544: =head2 Session Environment Functions
16545:
16546: =over 4
16547:
16548: =item *
16549: X<appenv()>
16550: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
16551: the user envirnoment file, and will be restored for each access this
16552: user makes during this session, also modifies the %env for the current
16553: process. Optional rolesarrayref - if defined contains a reference to an array
16554: of roles which are exempt from the restriction on modifying user.role entries
16555: in the user's environment.db and in %env.
16556:
16557: =item *
16558: X<delenv()>
16559: B<delenv($delthis,$regexp)>: removes all items from the session
16560: environment file that begin with $delthis. If the
16561: optional second arg - $regexp - is true, $delthis is treated as a
16562: regular expression, otherwise \Q$delthis\E is used.
16563: The values are also deleted from the current processes %env.
16564:
16565: =item * get_env_multiple($name)
16566:
16567: gets $name from the %env hash, it seemlessly handles the cases where multiple
16568: values may be defined and end up as an array ref.
16569:
16570: returns an array of values
16571:
16572: =back
16573:
16574: =head2 User Information
16575:
16576: =over 4
16577:
16578: =item *
16579: X<queryauthenticate()>
16580: B<queryauthenticate($uname,$udom)>: try to determine user's current
16581: authentication scheme
16582:
16583: =item *
16584: X<authenticate()>
16585: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
16586: authenticate user from domain's lib servers (first use the current
16587: one). C<$upass> should be the users password.
16588: $checkdefauth is optional (value is 1 if a check should be made to
16589: authenticate user using default authentication method, and allow
16590: account creation if username does not have account in the domain).
16591: $clientcancheckhost is optional (value is 1 if checking whether the
16592: server can host will occur on the client side in lonauth.pm).
16593:
16594: =item *
16595: X<homeserver()>
16596: B<homeserver($uname,$udom)>: find the server which has
16597: the user's directory and files (there must be only one), this caches
16598: the answer, and also caches if there is a borken connection.
16599:
16600: =item *
16601: X<idget()>
16602: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
16603: a list of student/employee IDs or clicker IDs
16604: (student/employee IDs are a unique resource in a domain, there must be
16605: only 1 ID per username, and only 1 username per ID in a specific domain).
16606: clickerIDs are not necessarily unique, as students might share clickers.
16607: (returns hash: id=>name,id=>name)
16608:
16609: =item *
16610: X<idrget()>
16611: B<idrget($udom,@unames)>: find the IDs behind a list of
16612: usernames (returns hash: name=>id,name=>id)
16613:
16614: =item *
16615: X<idput()>
16616: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
16617: names and associated student/employee IDs or clicker IDs.
16618:
16619: =item *
16620: X<iddel()>
16621: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
16622: student/employee ID or clicker ID username look-ups from domain.
16623: The homeserver ($uhome) and namespace ($namespace) are optional.
16624: If no $uhome is provided, it will be determined usig &homeserver()
16625: for each user. If no $namespace is provided, the default is ids.
16626:
16627: =item *
16628: X<updateclickers()>
16629: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
16630: clicker ID-to-username look-ups in clickers.db on library server.
16631: Permitted actions are add or del (i.e., add or delete). The
16632: clickers.db contains clickerID as keys (escaped), and each corresponding
16633: value is an escaped comma-separated list of usernames (for whom the
16634: library server is the homeserver), who registered that particular ID.
16635: If $critical is true, the update will be sent via &critical, otherwise
16636: &reply() will be used.
16637:
16638: =item *
16639: X<rolesinit()>
16640: B<rolesinit($udom,$username)>: get user privileges.
16641: returns user role, first access and timer interval hashes
16642:
16643: =item *
16644: X<privileged()>
16645: B<privileged($username,$domain)>: returns a true if user has a
16646: privileged and active role (i.e. su or dc), false otherwise.
16647:
16648: =item *
16649: X<getsection()>
16650: B<getsection($udom,$uname,$cname)>: finds the section of student in the
16651: course $cname, return section name/number or '' for "not in course"
16652: and '-1' for "no section"
16653:
16654: =item *
16655: X<userenvironment()>
16656: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
16657: passed in @what from the requested user's environment, returns a hash
16658:
16659: =item *
16660: X<userlog_query()>
16661: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
16662: activity.log file. %filters defines filters applied when parsing the
16663: log file. These can be start or end timestamps, or the type of action
16664: - log to look for Login or Logout events, check for Checkin or
16665: Checkout, role for role selection. The response is in the form
16666: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
16667: escaped strings of the action recorded in the activity.log file.
16668:
16669: =back
16670:
16671: =head2 User Roles
16672:
16673: =over 4
16674:
16675: =item *
16676:
16677: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
16678: returns codes for allowed actions.
16679:
16680: The first argument is required, all others are optional.
16681:
16682: $priv is the privilege being checked.
16683: $uri contains additional information about what is being checked for access (e.g.,
16684: URL, course ID etc.).
16685: $symb is the unique resource instance identifier in a course; if needed,
16686: but not provided, it will be retrieved via a call to &symbread().
16687: $role is the role for which a priv is being checked (only used if priv is evb).
16688: $clientip is the user's IP address (only used when checking for access to portfolio
16689: files).
16690: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
16691: prevents recursive calls to &allowed.
16692:
16693: F: full access
16694: U,I,K: authentication modes (cxx only)
16695: '': forbidden
16696: 1: user needs to choose course
16697: 2: browse allowed
16698: A: passphrase authentication needed
16699: B: access temporarily blocked because of a blocking event in a course.
16700: D: access blocked because access is required via session initiated via deep-link
16701:
16702: =item *
16703:
16704: constructaccess($url,$setpriv) : check for access to construction space URL
16705:
16706: See if the owner domain and name in the URL match those in the
16707: expected environment. If so, return three element list
16708: ($ownername,$ownerdomain,$ownerhome).
16709:
16710: Otherwise return the null string.
16711:
16712: If second argument 'setpriv' is true, it assigns the privileges,
16713: and returns the same three element list, unless the owner has
16714: blocked "ad hoc" Domain Coordinator access to the Author Space,
16715: in which case the null string is returned.
16716:
16717: =item *
16718:
16719: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
16720: define a custom role rolename set privileges in format of lonTabs/roles.tab
16721: for system, domain, and course level. $uname and $udom are optional (current
16722: user's username and domain will be used when either of $uname or $udom are absent.
16723:
16724: =item *
16725:
16726: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
16727: (rolesplain.tab); plain text explanation of a user role term.
16728: $type is Course (default) or Community.
16729: If $forcedefault evaluates to true, text returned will be default
16730: text for $type. Otherwise, if this is a course, the text returned
16731: will be a custom name for the role (if defined in the course's
16732: environment). If no custom name is defined the default is returned.
16733:
16734: =item *
16735:
16736: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
16737: All arguments are optional. Returns a hash of a roles, either for
16738: co-author/assistant author roles for a user's Construction Space
16739: (default), or if $context is 'userroles', roles for the user himself,
16740: In the hash, keys are set to colon-separated $uname,$udom,$role, and
16741: (optionally) if $withsec is true, a fourth colon-separated item - $section.
16742: For each key, value is set to colon-separated start and end times for
16743: the role. If no username and domain are specified, will default to
16744: current user/domain. Types, roles, and roledoms are references to arrays
16745: of role statuses (active, future or previous), roles
16746: (e.g., cc,in, st etc.) and domains of the roles which can be used
16747: to restrict the list of roles reported. If no array ref is
16748: provided for types, will default to return only active roles.
16749:
16750: =item *
16751:
16752: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
16753: user: $uname:$udom has a role in the course: $cdom_$cnum.
16754:
16755: Additional optional arguments are: $type (if role checking is to be restricted
16756: to certain user status types -- previous (expired roles), active (currently
16757: available roles) or future (roles available in the future), and
16758: $hideprivileged -- if true will not report course roles for users who
16759: have active Domain Coordinator role in course's domain or in additional
16760: domains (specified in 'Domains to check for privileged users' in course
16761: environment -- set via: Course Settings -> Classlists and staff listing).
16762:
16763: =item *
16764:
16765: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
16766: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
16767: $possdomains and $possroles are optional array refs -- to domains to check and
16768: roles to check. If $possdomains is not specified, a dump will be done of the
16769: users' roles.db to check for a dc or su role in any domain. This can be
16770: time consuming if &privileged is called repeatedly (e.g., when displaying a
16771: classlist), so in such cases, supplying a $possdomains array is preferred, as
16772: this then allows &privileged_by_domain() to be used, which caches the identity
16773: of privileged users, eliminating the need for repeated calls to &dump().
16774:
16775: =item *
16776:
16777: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
16778: where the outer hash keys are domains specified in the $possdomains array ref,
16779: next inner hash keys are privileged roles specified in the $roles array ref,
16780: and the innermost hash contains key = value pairs for username:domain = end:start
16781: for active or future "privileged" users with that role in that domain. To avoid
16782: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
16783: innerhash are cached using priv_$role and $dom as the identifiers.
16784:
16785: =back
16786:
16787: =head2 User Modification
16788:
16789: =over 4
16790:
16791: =item *
16792:
16793: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
16794: user for the level given by URL. Optional start and end dates (leave empty
16795: string or zero for "no date")
16796:
16797: =item *
16798:
16799: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
16800: change a users, password, possible return values are: ok,
16801: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
16802: refused
16803:
16804: =item *
16805:
16806: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
16807:
16808: =item *
16809:
16810: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
16811: $forceid,$desiredhome,$email,$inststatus,$candelete) :
16812:
16813: will update user information (firstname,middlename,lastname,generation,
16814: permanentemail), and if forceid is true, student/employee ID also.
16815: A user's institutional affiliation(s) can also be updated.
16816: User information fields will not be overwritten with empty entries
16817: unless the field is included in the $candelete array reference.
16818: This array is included when a single user is modified via "Manage Users",
16819: or when Autoupdate.pl is run by cron in a domain.
16820:
16821: =item *
16822:
16823: modifystudent
16824:
16825: modify a student's enrollment and identification information.
16826: The course id is resolved based on the current user's environment.
16827: This means the invoking user must be a course coordinator or otherwise
16828: associated with a course.
16829:
16830: This call is essentially a wrapper for lonnet::modifyuser and
16831: lonnet::modify_student_enrollment
16832:
16833: Inputs:
16834:
16835: =over 4
16836:
16837: =item B<$udom> Student's loncapa domain
16838:
16839: =item B<$uname> Student's loncapa login name
16840:
16841: =item B<$uid> Student/Employee ID
16842:
16843: =item B<$umode> Student's authentication mode
16844:
16845: =item B<$upass> Student's password
16846:
16847: =item B<$first> Student's first name
16848:
16849: =item B<$middle> Student's middle name
16850:
16851: =item B<$last> Student's last name
16852:
16853: =item B<$gene> Student's generation
16854:
16855: =item B<$usec> Student's section in course
16856:
16857: =item B<$end> Unix time of the roles expiration
16858:
16859: =item B<$start> Unix time of the roles start date
16860:
16861: =item B<$forceid> If defined, allow $uid to be changed
16862:
16863: =item B<$desiredhome> server to use as home server for student
16864:
16865: =item B<$email> Student's permanent e-mail address
16866:
16867: =item B<$type> Type of enrollment (auto or manual)
16868:
16869: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
16870:
16871: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
16872:
16873: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
16874:
16875: =item B<$context> role change context (shown in User Management Logs display in a course)
16876:
16877: =item B<$inststatus> institutional status of user - : separated string of escaped status types
16878:
16879: =item B<$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.
16880:
16881: =back
16882:
16883: =item *
16884:
16885: modify_student_enrollment
16886:
16887: Change a student's enrollment status in a class. The environment variable
16888: 'role.request.course' must be defined for this function to proceed.
16889:
16890: Inputs:
16891:
16892: =over 4
16893:
16894: =item $udom, student's domain
16895:
16896: =item $uname, student's name
16897:
16898: =item $uid, student's user id
16899:
16900: =item $first, student's first name
16901:
16902: =item $middle
16903:
16904: =item $last
16905:
16906: =item $gene
16907:
16908: =item $usec
16909:
16910: =item $end
16911:
16912: =item $start
16913:
16914: =item $type
16915:
16916: =item $locktype
16917:
16918: =item $cid
16919:
16920: =item $selfenroll
16921:
16922: =item $context
16923:
16924: =item $credits, number of credits student will earn from this class
16925:
16926: =item $instsec, institutional course section code for student
16927:
16928: =back
16929:
16930:
16931: =item *
16932:
16933: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
16934: custom role; give a custom role to a user for the level given by URL. Specify
16935: name and domain of role author, and role name
16936:
16937: =item *
16938:
16939: revokerole($udom,$uname,$url,$role) : revoke a role for url
16940:
16941: =item *
16942:
16943: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
16944:
16945: =back
16946:
16947: =head2 Course Infomation
16948:
16949: =over 4
16950:
16951: =item *
16952:
16953: coursedescription($courseid,$options) : returns a hash of information about the
16954: specified course id, including all environment settings for the
16955: course, the description of the course will be in the hash under the
16956: key 'description'
16957:
16958: $options is an optional parameter that if supplied is a hash reference that controls
16959: what how this function works. It has the following key/values:
16960:
16961: =over 4
16962:
16963: =item freshen_cache
16964:
16965: If defined, and the environment cache for the course is valid, it is
16966: returned in the returned hash.
16967:
16968: =item one_time
16969:
16970: If defined, the last cache time is set to _now_
16971:
16972: =item user
16973:
16974: If defined, the supplied username is used instead of the current user.
16975:
16976:
16977: =back
16978:
16979: =item *
16980:
16981: resdata($name,$domain,$type,@which) : request for current parameter
16982: setting for a specific $type, where $type is either 'course' or 'user',
16983: @what should be a list of parameters to ask about. This routine caches
16984: answers for 10 minutes.
16985:
16986: =item *
16987:
16988: get_courseresdata($courseid, $domain) : dump the entire course resource
16989: data base, returning a hash that is keyed by the resource name and has
16990: values that are the resource value. I believe that the timestamps and
16991: versions are also returned.
16992:
16993: =back
16994:
16995: =head2 Course Modification
16996:
16997: =over 4
16998:
16999: =item *
17000:
17001: writecoursepref($courseid,%prefs) : write preferences (environment
17002: database) for a course
17003:
17004: =item *
17005:
17006: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
17007:
17008: =item *
17009:
17010: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
17011:
17012: =item *
17013:
17014: is_course($courseid), is_course($cdom, $cnum)
17015:
17016: Accepts either a combined $courseid (in the form of domain_courseid) or the
17017: two component version $cdom, $cnum. It checks if the specified course exists.
17018:
17019: Returns:
17020: undef if the course doesn't exist, otherwise
17021: in scalar context the combined courseid.
17022: in list context the two components of the course identifier, domain and
17023: courseid.
17024:
17025: =back
17026:
17027: =head2 Bubblesheet Configuration
17028:
17029: =over 4
17030:
17031: =item *
17032:
17033: get_scantron_config($which)
17034:
17035: $which - the name of the configuration to parse from the file.
17036:
17037: Parses and returns the bubblesheet configuration line selected as a
17038: hash of configuration file fields.
17039:
17040:
17041: Returns:
17042: If the named configuration is not in the file, an empty
17043: hash is returned.
17044:
17045: a hash with the fields
17046: name - internal name for the this configuration setup
17047: description - text to display to operator that describes this config
17048: CODElocation - if 0 or the string 'none'
17049: - no CODE exists for this config
17050: if -1 || the string 'letter'
17051: - a CODE exists for this config and is
17052: a string of letters
17053: Unsupported value (but planned for future support)
17054: if a positive integer
17055: - The CODE exists as the first n items from
17056: the question section of the form
17057: if the string 'number'
17058: - The CODE exists for this config and is
17059: a string of numbers
17060: CODEstart - (only matter if a CODE exists) column in the line where
17061: the CODE starts
17062: CODElength - length of the CODE
17063: IDstart - column where the student/employee ID starts
17064: IDlength - length of the student/employee ID info
17065: Qstart - column where the information from the bubbled
17066: 'questions' start
17067: Qlength - number of columns comprising a single bubble line from
17068: the sheet. (usually either 1 or 10)
17069: Qon - either a single character representing the character used
17070: to signal a bubble was chosen in the positional setup, or
17071: the string 'letter' if the letter of the chosen bubble is
17072: in the final, or 'number' if a number representing the
17073: chosen bubble is in the file (1->A 0->J)
17074: Qoff - the character used to represent that a bubble was
17075: left blank
17076: PaperID - if the scanning process generates a unique number for each
17077: sheet scanned the column that this ID number starts in
17078: PaperIDlength - number of columns that comprise the unique ID number
17079: for the sheet of paper
17080: FirstName - column that the first name starts in
17081: FirstNameLength - number of columns that the first name spans
17082: LastName - column that the last name starts in
17083: LastNameLength - number of columns that the last name spans
17084: BubblesPerRow - number of bubbles available in each row used to
17085: bubble an answer. (If not specified, 10 assumed).
17086:
17087:
17088: =item *
17089:
17090: get_scantronformat_file($cdom)
17091:
17092: $cdom - the course's domain (optional); if not supplied, uses
17093: domain for current $env{'request.course.id'}.
17094:
17095: Returns an array containing lines from the scantron format file for
17096: the domain of the course.
17097:
17098: If a url for a custom.tab file is listed in domain's configuration.db,
17099: lines are from this file.
17100:
17101: Otherwise, if a default.tab has been published in RES space by the
17102: domainconfig user, lines are from this file.
17103:
17104: Otherwise, fall back to getting lines from the legacy file on the
17105: local server: /home/httpd/lonTabs/default_scantronformat.tab
17106:
17107: =back
17108:
17109: =head2 Resource Subroutines
17110:
17111: =over 4
17112:
17113: =item *
17114:
17115: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
17116:
17117: =item *
17118:
17119: repcopy($filename) : subscribes to the requested file, and attempts to
17120: replicate from the owning library server, Might return
17121: 'unavailable', 'not_found', 'forbidden', 'ok', or
17122: 'bad_request', also attempts to grab the metadata for the
17123: resource. Expects the local filesystem pathname
17124: (/home/httpd/html/res/....)
17125:
17126: =back
17127:
17128: =head2 Resource Information
17129:
17130: =over 4
17131:
17132: =item *
17133:
17134: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
17135: and returns the value of a variety of different possible values,
17136: $varname should be a request string, and the other parameters can be
17137: used to specify who and what one is asking about. Ordinarily, $cid
17138: does not need to be specified, as it is retrived from
17139: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
17140: within lonuserstate::loadmap() when initializing a course, before
17141: $env{'request.course.id'} has been set, so it needs to be provided
17142: in that one case.
17143:
17144: Possible values for $varname are environment.lastname (or other item
17145: from the envirnment hash), user.name (or someother aspect about the
17146: user), resource.0.maxtries (or some other part and parameter of a
17147: resource)
17148:
17149: =item *
17150:
17151: directcondval($number) : get current value of a condition; reads from a state
17152: string
17153:
17154: =item *
17155:
17156: condval($condidx) : value of condition index based on state
17157:
17158: =item *
17159:
17160: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
17161: resource's metadata, $what should be either a specific key, or either
17162: 'keys' (to get a list of possible keys) or 'packages' to get a list of
17163: packages that this resource currently uses, the last 3 arguments are
17164: only used internally for recursive metadata.
17165:
17166: the toolsymb is only used where the uri is for an external tool (for which
17167: the uri as well as the symb are guaranteed to be unique).
17168:
17169: this function automatically caches all requests except any made recursively
17170: to retrieve a list of metadata keys for an imported library file ($liburi is
17171: defined).
17172:
17173: =item *
17174:
17175: metadata_query($query,$custom,$customshow) : make a metadata query against the
17176: network of library servers; returns file handle of where SQL and regex results
17177: will be stored for query
17178:
17179: =item *
17180:
17181: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
17182: return symbolic list entry (all arguments optional).
17183:
17184: Args: filename is the filename (including path) for the file for which a symb
17185: is required; donotrecurse, if true will prevent calls to allowed() being made
17186: to check access status if more than one resource was found in the bighash
17187: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
17188: a randompick); ignorecachednull, if true will prevent a symb of '' being
17189: returned if $env{$cache_str} is defined as ''; checkforblock if true will
17190: cause possible symbs to be checked to determine if they are subject to content
17191: blocking, if so they will not be included as possible symbs; possibles is a
17192: ref to a hash, which, as a side effect, will be populated with all possible
17193: symbs (content blocking not tested).
17194:
17195: returns the data handle
17196:
17197: =item *
17198:
17199: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
17200: and is a possible symb for the URL in $thisfn, and if is an encrypted
17201: resource that the user accessed using /enc/ returns a 1 on success, 0
17202: on failure, user must be in a course, as it assumes the existence of
17203: the course initial hash, and uses $env('request.course.id'}. The third
17204: arg is an optional reference to a scalar. If this arg is passed in the
17205: call to symbverify, it will be set to 1 if the symb has been set to be
17206: encrypted; otherwise it will be null.
17207:
17208: =item *
17209:
17210: symbclean($symb) : removes versions numbers from a symb, returns the
17211: cleaned symb
17212:
17213: =item *
17214:
17215: is_on_map($uri) : checks if the $uri is somewhere on the current
17216: course map, user must be in a course for it to work.
17217:
17218: =item *
17219:
17220: numval($salt) : return random seed value (addend for rndseed)
17221:
17222: =item *
17223:
17224: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
17225: a random seed, all arguments are optional, if they aren't sent it uses the
17226: environment to derive them. Note: if symb isn't sent and it can't get one
17227: from &symbread it will use the current time as its return value
17228:
17229: =item *
17230:
17231: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
17232: unfakeable, receipt
17233:
17234: =item *
17235:
17236: receipt() : API to ireceipt working off of env values; given out to users
17237:
17238: =item *
17239:
17240: countacc($url) : count the number of accesses to a given URL
17241:
17242: =item *
17243:
17244: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
17245:
17246: =item *
17247:
17248: checkin($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 $tcrsid)
17249:
17250: =item *
17251:
17252: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
17253:
17254: =item *
17255:
17256: devalidate($symb) : devalidate temporary spreadsheet calculations,
17257: forcing spreadsheet to reevaluate the resource scores next time.
17258:
17259: =item *
17260:
17261: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
17262: when viewing in course context.
17263:
17264: input: six args -- filename (decluttered), course number, course domain,
17265: url, symb (if registered) and group (if this is a
17266: group item -- e.g., bulletin board, group page etc.).
17267:
17268: output: array of five scalars --
17269: $cfile -- url for file editing if editable on current server
17270: $home -- homeserver of resource (i.e., for author if published,
17271: or course if uploaded.).
17272: $switchserver -- 1 if server switch will be needed.
17273: $forceedit -- 1 if icon/link should be to go to edit mode
17274: $forceview -- 1 if icon/link should be to go to view mode
17275:
17276: =item *
17277:
17278: is_course_upload($file,$cnum,$cdom)
17279:
17280: Used in course context to determine if current file was uploaded to
17281: the course (i.e., would be found in /userfiles/docs on the course's
17282: homeserver.
17283:
17284: input: 3 args -- filename (decluttered), course number and course domain.
17285: output: boolean -- 1 if file was uploaded.
17286:
17287: =back
17288:
17289: =head2 Storing/Retreiving Data
17290:
17291: =over 4
17292:
17293: =item *
17294:
17295: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
17296: permanently for this url; hashref needs to be given and should be a \%hashname;
17297: the remaining args aren't required and if they aren't passed or are '' they will
17298: be derived from the env (with the exception of $laststore, which is an
17299: optional arg used when a user's submission is stored in grading).
17300: $laststore is $version=$timestamp, where $version is the most recent version
17301: number retrieved for the corresponding $symb in the $namespace db file, and
17302: $timestamp is the timestamp for that transaction (UNIX time).
17303: $laststore is currently only passed when cstore() is called by
17304: structuretags::finalize_storage().
17305:
17306: =item *
17307:
17308: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
17309: but uses critical subroutine
17310:
17311: =item *
17312:
17313: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
17314: all args are optional
17315:
17316: =item *
17317:
17318: dumpstore($namespace,$udom,$uname,$regexp,$range) :
17319: dumps the complete (or key matching regexp) namespace into a hash
17320: ($udom, $uname, $regexp, $range are optional) for a namespace that is
17321: normally &store()ed into
17322:
17323: $range should be either an integer '100' (give me the first 100
17324: matching records)
17325: or be two integers sperated by a - with no spaces
17326: '30-50' (give me the 30th through the 50th matching
17327: records)
17328:
17329:
17330: =item *
17331:
17332: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
17333: replaces a &store() version of data with a replacement set of data
17334: for a particular resource in a namespace passed in the $storehash hash
17335: reference. If $tolog is true, the transaction is logged in the courselog
17336: with an action=PUTSTORE.
17337:
17338: =item *
17339:
17340: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
17341: works very similar to store/cstore, but all data is stored in a
17342: temporary location and can be reset using tmpreset, $storehash should
17343: be a hash reference, returns nothing on success
17344:
17345: =item *
17346:
17347: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
17348: similar to restore, but all data is stored in a temporary location and
17349: can be reset using tmpreset. Returns a hash of values on success,
17350: error string otherwise.
17351:
17352: =item *
17353:
17354: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
17355: deltes all keys for $symb form the temporary storage hash.
17356:
17357: =item *
17358:
17359: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17360: reference filled in from namesp ($udom and $uname are optional)
17361:
17362: =item *
17363:
17364: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
17365: namesp ($udom and $uname are optional)
17366:
17367: =item *
17368:
17369: dump($namespace,$udom,$uname,$regexp,$range) :
17370: dumps the complete (or key matching regexp) namespace into a hash
17371: ($udom, $uname, $regexp, $range are optional)
17372:
17373: $range should be either an integer '100' (give me the first 100
17374: matching records)
17375: or be two integers sperated by a - with no spaces
17376: '30-50' (give me the 30th through the 50th matching
17377: records)
17378: =item *
17379:
17380: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
17381: $store can be a scalar, an array reference, or if the amount to be
17382: incremented is > 1, a hash reference.
17383:
17384: ($udom and $uname are optional)
17385:
17386: =item *
17387:
17388: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
17389: ($udom and $uname are optional)
17390:
17391: =item *
17392:
17393: cput($namespace,$storehash,$udom,$uname) : critical put
17394: ($udom and $uname are optional)
17395:
17396: =item *
17397:
17398: newput($namespace,$storehash,$udom,$uname) :
17399:
17400: Attempts to store the items in the $storehash, but only if they don't
17401: currently exist, if this succeeds you can be certain that you have
17402: successfully created a new key value pair in the $namespace db.
17403:
17404:
17405: Args:
17406: $namespace: name of database to store values to
17407: $storehash: hashref to store to the db
17408: $udom: (optional) domain of user containing the db
17409: $uname: (optional) name of user caontaining the db
17410:
17411: Returns:
17412: 'ok' -> succeeded in storing all keys of $storehash
17413: 'key_exists: <key>' -> failed to anything out of $storehash, as at
17414: least <key> already existed in the db (other
17415: requested keys may also already exist)
17416: 'error: <msg>' -> unable to tie the DB or other error occurred
17417: 'con_lost' -> unable to contact request server
17418: 'refused' -> action was not allowed by remote machine
17419:
17420:
17421: =item *
17422:
17423: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17424: reference filled in from namesp (encrypts the return communication)
17425: ($udom and $uname are optional)
17426:
17427: =item *
17428:
17429: log($udom,$name,$home,$message) : write to permanent log for user; use
17430: critical subroutine
17431:
17432: =item *
17433:
17434: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
17435: array reference filled in from namespace found in domain level on either
17436: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
17437:
17438: =item *
17439:
17440: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
17441: domain level either on specified domain server ($uhome) or primary domain
17442: server ($udom and $uhome are optional)
17443:
17444: =item *
17445:
17446: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
17447: for: authentication, language, quotas, timezone, date locale, and portal URL in
17448: the target domain.
17449:
17450: May also include additional key => value pairs for the following groups:
17451:
17452: =over
17453:
17454: =item
17455: disk quotas (MB allocated by default to portfolios and authoring spaces).
17456:
17457: =over
17458:
17459: =item defaultquota, authorquota
17460:
17461: =back
17462:
17463: =item
17464: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
17465: portfolio for users).
17466:
17467: =over
17468:
17469: =item
17470: aboutme, blog, webdav, portfolio
17471:
17472: =back
17473:
17474: =item
17475: requestcourses: ability to request courses, and how requests are processed.
17476:
17477: =over
17478:
17479: =item
17480: official, unofficial, community, textbook, placement
17481:
17482: =back
17483:
17484: =item
17485: inststatus: types of institutional affiliation, and order in which they are displayed.
17486:
17487: =over
17488:
17489: =item
17490: inststatustypes, inststatusorder, inststatusguest
17491:
17492: =back
17493:
17494: =item
17495: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
17496: for course's uploaded content.
17497:
17498: =over
17499:
17500: =item
17501: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
17502: communityquota, textbookquota, placementquota
17503:
17504: =back
17505:
17506: =item
17507: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
17508: on your servers.
17509:
17510: =over
17511:
17512: =item
17513: remotesessions, hostedsessions
17514:
17515: =back
17516:
17517: =back
17518:
17519: In cases where a domain coordinator has never used the "Set Domain Configuration"
17520: utility to create a configuration.db file on a domain's primary library server
17521: only the following domain defaults: auth_def, auth_arg_def, lang_def
17522: -- corresponding values are authentication type (internal, krb4, krb5,
17523: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
17524: will be available. Values are retrieved from cache (if current), unless the
17525: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
17526: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
17527:
17528: Typical usage:
17529:
17530: %domdefaults = &get_domain_defaults($target_domain);
17531:
17532: =back
17533:
17534: =head2 Network Status Functions
17535:
17536: =over 4
17537:
17538: =item *
17539:
17540: dirlist() : return directory list based on URI (first arg).
17541:
17542: Inputs: 1 required, 5 optional.
17543:
17544: =over
17545:
17546: =item
17547: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
17548:
17549: =item
17550: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
17551:
17552: =item
17553: $username - username of user/course to be listed. Extracted from $uri if absent.
17554:
17555: =item
17556: $getpropath - boolean: 1 if prepend path using &propath().
17557:
17558: =item
17559: $getuserdir - boolean: 1 if prepend path for "userfiles".
17560:
17561: =item
17562: $alternateRoot - path to prepend in place of path from $uri.
17563:
17564: =back
17565:
17566: Returns: Array of up to two items.
17567:
17568: =over
17569:
17570: a reference to an array of files/subdirectories
17571:
17572: =over
17573:
17574: Each element in the array of files/subdirectories is a & separated list of
17575: item name and the result of running stat on the item. If dirlist was requested
17576: for a file instead of a directory, the item name will be ''. For a directory
17577: listing, if the item is a metadata file, the element will end &N&M
17578: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
17579: default copyright set (1).
17580:
17581: =back
17582:
17583: a scalar containing error condition (if encountered).
17584:
17585: =over
17586:
17587: =item
17588: no_host (no homeserver identified for $username:$domain).
17589:
17590: =item
17591: no_such_host (server contacted for listing not identified as valid host).
17592:
17593: =item
17594: con_lost (connection to remote server failed).
17595:
17596: =item
17597: refused (invalid $username:$domain received on lond side).
17598:
17599: =item
17600: no_such_dir (directory at specified path on lond side does not exist).
17601:
17602: =item
17603: empty (directory at specified path on lond side is empty).
17604:
17605: =over
17606:
17607: This is currently not encountered because the &ls3, &ls2,
17608: &ls (_handler) routines on the lond side do not filter out
17609: . and .. from a directory listing.
17610:
17611: =back
17612:
17613: =back
17614:
17615: =back
17616:
17617: =item *
17618:
17619: spareserver() : find server with least workload from spare.tab
17620:
17621:
17622: =item *
17623:
17624: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
17625: if there is no corresponding loncapa host.
17626:
17627: =back
17628:
17629:
17630: =head2 Apache Request
17631:
17632: =over 4
17633:
17634: =item *
17635:
17636: ssi($url,%hash) : server side include, does a complete request cycle on url to
17637: localhost, posts hash
17638:
17639: =back
17640:
17641: =head2 Data to String to Data
17642:
17643: =over 4
17644:
17645: =item *
17646:
17647: hash2str(%hash) : convert a hash into a string complete with escaping and '='
17648: and '&' separators, supports elements that are arrayrefs and hashrefs
17649:
17650: =item *
17651:
17652: hashref2str($hashref) : convert a hashref into a string complete with
17653: escaping and '=' and '&' separators, supports elements that are
17654: arrayrefs and hashrefs
17655:
17656: =item *
17657:
17658: arrayref2str($arrayref) : convert an arrayref into a string complete
17659: with escaping and '&' separators, supports elements that are arrayrefs
17660: and hashrefs
17661:
17662: =item *
17663:
17664: str2hash($string) : convert string to hash using unescaping and
17665: splitting on '=' and '&', supports elements that are arrayrefs and
17666: hashrefs
17667:
17668: =item *
17669:
17670: str2array($string) : convert string to hash using unescaping and
17671: splitting on '&', supports elements that are arrayrefs and hashrefs
17672:
17673: =back
17674:
17675: =head2 Logging Routines
17676:
17677:
17678: These routines allow one to make log messages in the lonnet.log and
17679: lonnet.perm logfiles.
17680:
17681: =over 4
17682:
17683: =item *
17684:
17685: logtouch() : make sure the logfile, lonnet.log, exists
17686:
17687: =item *
17688:
17689: logthis() : append message to the normal lonnet.log file, it gets
17690: preiodically rolled over and deleted.
17691:
17692: =item *
17693:
17694: logperm() : append a permanent message to lonnet.perm.log, this log
17695: file never gets deleted by any automated portion of the system, only
17696: messages of critical importance should go in here.
17697:
17698:
17699: =back
17700:
17701: =head2 General File Helper Routines
17702:
17703: =over 4
17704:
17705: =item *
17706:
17707: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
17708: (a) files in /uploaded
17709: (i) If a local copy of the file exists -
17710: compares modification date of local copy with last-modified date for
17711: definitive version stored on home server for course. If local copy is
17712: stale, requests a new version from the home server and stores it.
17713: If the original has been removed from the home server, then local copy
17714: is unlinked.
17715: (ii) If local copy does not exist -
17716: requests the file from the home server and stores it.
17717:
17718: If $caller is 'uploadrep':
17719: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
17720: for request for files originally uploaded via DOCS.
17721: - returns 'ok' if fresh local copy now available, -1 otherwise.
17722:
17723: Otherwise:
17724: This indicates a call from the content generation phase of the request.
17725: - returns the entire contents of the file or -1.
17726:
17727: (b) files in /res
17728: - returns the entire contents of a file or -1;
17729: it properly subscribes to and replicates the file if neccessary.
17730:
17731:
17732: =item *
17733:
17734: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
17735: reference
17736:
17737: returns either a stat() list of data about the file or an empty list
17738: if the file doesn't exist or couldn't find out about it (connection
17739: problems or user unknown)
17740:
17741: =item *
17742:
17743: filelocation($dir,$file) : returns file system location of a file
17744: based on URI; meant to be "fairly clean" absolute reference, $dir is a
17745: directory that relative $file lookups are to looked in ($dir of /a/dir
17746: and a file of ../bob will become /a/bob)
17747:
17748: =item *
17749:
17750: hreflocation($dir,$file) : returns file system location or a URL; same as
17751: filelocation except for hrefs
17752:
17753: =item *
17754:
17755: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
17756: also removes beginning /home/httpd/html unless /priv/ follows it.
17757:
17758: =back
17759:
17760: =head2 Usererfile file routines (/uploaded*)
17761:
17762: =over 4
17763:
17764: =item *
17765:
17766: userfileupload(): main rotine for putting a file in a user or course's
17767: filespace, arguments are,
17768:
17769: formname - required - this is the name of the element in $env where the
17770: filename, and the contents of the file to create/modifed exist
17771: the filename is in $env{'form.'.$formname.'.filename'} and the
17772: contents of the file is located in $env{'form.'.$formname}
17773: context - if coursedoc, store the file in the course of the active role
17774: of the current user;
17775: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
17776: if 'canceloverwrite': delete file in tmp/overwrites directory
17777: subdir - required - subdirectory to put the file in under ../userfiles/
17778: if undefined, it will be placed in "unknown"
17779:
17780: (This routine calls clean_filename() to remove any dangerous
17781: characters from the filename, and then calls finuserfileupload() to
17782: complete the transaction)
17783:
17784: returns either the url of the uploaded file (/uploaded/....) if successful
17785: and /adm/notfound.html if unsuccessful
17786:
17787: =item *
17788:
17789: clean_filename(): routine for cleaing a filename up for storage in
17790: userfile space, argument is:
17791:
17792: filename - proposed filename
17793:
17794: returns: the new clean filename
17795:
17796: =item *
17797:
17798: finishuserfileupload(): routine that creates and sends the file to
17799: userspace, probably shouldn't be called directly
17800:
17801: docuname: username or courseid of destination for the file
17802: docudom: domain of user/course of destination for the file
17803: formname: same as for userfileupload()
17804: fname: filename (including subdirectories) for the file
17805: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
17806: if hashref, and context is scantron, will convert csv format to standard format
17807: allfiles: reference to hash used to store objects found by parser
17808: codebase: reference to hash used for codebases of java objects found by parser
17809: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
17810: thumbheight: height (pixels) of thumbnail to be created for uploaded image
17811: resizewidth: width to be used to resize image using resizeImage from ImageMagick
17812: resizeheight: height to be used to resize image using resizeImage from ImageMagick
17813: context: if 'overwrite', will move the uploaded file from its temporary location to
17814: userfiles to facilitate overwriting a previously uploaded file with same name.
17815: mimetype: reference to scalar to accommodate mime type determined
17816: from File::MMagic if $parser = parse.
17817:
17818: returns either the url of the uploaded file (/uploaded/....) if successful
17819: and /adm/notfound.html if unsuccessful (or an error message if context
17820: was 'overwrite').
17821:
17822:
17823: =item *
17824:
17825: renameuserfile(): renames an existing userfile to a new name
17826:
17827: Args:
17828: docuname: username or courseid of destination for the file
17829: docudom: domain of user/course of destination for the file
17830: old: current file name (including any subdirs under userfiles)
17831: new: desired file name (including any subdirs under userfiles)
17832:
17833: =item *
17834:
17835: mkdiruserfile(): creates a directory is a userfiles dir
17836:
17837: Args:
17838: docuname: username or courseid of destination for the file
17839: docudom: domain of user/course of destination for the file
17840: dir: dir to create (including any subdirs under userfiles)
17841:
17842: =item *
17843:
17844: removeuserfile(): removes a file that exists in userfiles
17845:
17846: Args:
17847: docuname: username or courseid of destination for the file
17848: docudom: domain of user/course of destination for the file
17849: fname: filname to delete (including any subdirs under userfiles)
17850:
17851: =item *
17852:
17853: removeuploadedurl(): convience function for removeuserfile()
17854:
17855: Args:
17856: url: a full /uploaded/... url to delete
17857:
17858: =item *
17859:
17860: get_portfile_permissions():
17861: Args:
17862: domain: domain of user or course contain the portfolio files
17863: user: name of user or num of course contain the portfolio files
17864: Returns:
17865: hashref of a dump of the proper file_permissions.db
17866:
17867:
17868: =item *
17869:
17870: get_access_controls():
17871:
17872: Args:
17873: current_permissions: the hash ref returned from get_portfile_permissions()
17874: group: (optional) the group you want the files associated with
17875: file: (optional) the file you want access info on
17876:
17877: Returns:
17878: a hash (keys are file names) of hashes containing
17879: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
17880: values are XML containing access control settings (see below)
17881:
17882: Internal notes:
17883:
17884: access controls are stored in file_permissions.db as key=value pairs.
17885: key -> path to file/file_name\0uniqueID:scope_end_start
17886: where scope -> public,guest,course,group,domains or users.
17887: end -> UNIX time for end of access (0 -> no end date)
17888: start -> UNIX time for start of access
17889:
17890: value -> XML description of access control
17891: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
17892: <start></start>
17893: <end></end>
17894:
17895: <password></password> for scope type = guest
17896:
17897: <domain></domain> for scope type = course or group
17898: <number></number>
17899: <roles id="">
17900: <role></role>
17901: <access></access>
17902: <section></section>
17903: <group></group>
17904: </roles>
17905:
17906: <dom></dom> for scope type = domains
17907:
17908: <users> for scope type = users
17909: <user>
17910: <uname></uname>
17911: <udom></udom>
17912: </user>
17913: </users>
17914: </scope>
17915:
17916: Access data is also aggregated for each file in an additional key=value pair:
17917: key -> path to file/file_name\0accesscontrol
17918: value -> reference to hash
17919: hash contains key = value pairs
17920: where key = uniqueID:scope_end_start
17921: value = UNIX time record was last updated
17922:
17923: Used to improve speed of look-ups of access controls for each file.
17924:
17925: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
17926:
17927: =item *
17928:
17929: modify_access_controls():
17930:
17931: Modifies access controls for a portfolio file
17932: Args
17933: 1. file name
17934: 2. reference to hash of required changes,
17935: 3. domain
17936: 4. username
17937: where domain,username are the domain of the portfolio owner
17938: (either a user or a course)
17939:
17940: Returns:
17941: 1. result of additions or updates ('ok' or 'error', with error message).
17942: 2. result of deletions ('ok' or 'error', with error message).
17943: 3. reference to hash of any new or updated access controls.
17944: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
17945: key = integer (inbound ID)
17946: value = uniqueID
17947:
17948: =item *
17949:
17950: get_timebased_id():
17951:
17952: Attempts to get a unique timestamp-based suffix for use with items added to a
17953: course via the Course Editor (e.g., folders, composite pages,
17954: group bulletin boards).
17955:
17956: Args: (first three required; six others optional)
17957:
17958: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
17959: docssequence, or name of group
17960:
17961: 2. keyid (alphanumeric): name of temporary locking key in hash,
17962: e.g., num, boardids
17963:
17964: 3. namespace: name of gdbm file used to store suffixes already assigned;
17965: file will be named nohist_namespace.db
17966:
17967: 4. cdom: domain of course; default is current course domain from %env
17968:
17969: 5. cnum: course number; default is current course number from %env
17970:
17971: 6. idtype: set to concat if an additional digit is to be appended to the
17972: unix timestamp to form the suffix, if the plain timestamp is already
17973: in use. Default is to not do this, but simply increment the unix
17974: timestamp by 1 until a unique key is obtained.
17975:
17976: 7. who: holder of locking key; defaults to user:domain for user.
17977:
17978: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
17979: retrying); default is 3.
17980:
17981: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
17982:
17983: Returns:
17984:
17985: 1. suffix obtained (numeric)
17986:
17987: 2. result of deleting locking key (ok if deleted, or lock never obtained)
17988:
17989: 3. error: contains (localized) error message if an error occurred.
17990:
17991:
17992: =back
17993:
17994: =head2 HTTP Helper Routines
17995:
17996: =over 4
17997:
17998: =item *
17999:
18000: escape() : unpack non-word characters into CGI-compatible hex codes
18001:
18002: =item *
18003:
18004: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
18005:
18006: =back
18007:
18008: =head1 PRIVATE SUBROUTINES
18009:
18010: =head2 Underlying communication routines (Shouldn't call)
18011:
18012: =over 4
18013:
18014: =item *
18015:
18016: subreply() : tries to pass a message to lonc, returns con_lost if incapable
18017:
18018: =item *
18019:
18020: reply() : uses subreply to send a message to remote machine, logs all failures
18021:
18022: =item *
18023:
18024: critical() : passes a critical message to another server; if cannot
18025: get through then place message in connection buffer directory and
18026: returns con_delayed, if incapable of saving message, returns
18027: con_failed
18028:
18029: =item *
18030:
18031: reconlonc() : tries to reconnect lonc client processes.
18032:
18033: =back
18034:
18035: =head2 Resource Access Logging
18036:
18037: =over 4
18038:
18039: =item *
18040:
18041: flushcourselogs() : flush (save) buffer logs and access logs
18042:
18043: =item *
18044:
18045: courselog($what) : save message for course in hash
18046:
18047: =item *
18048:
18049: courseacclog($what) : save message for course using &courselog(). Perform
18050: special processing for specific resource types (problems, exams, quizzes, etc).
18051:
18052: =item *
18053:
18054: goodbye() : flush course logs and log shutting down; it is called in srm.conf
18055: as a PerlChildExitHandler
18056:
18057: =back
18058:
18059: =head2 Other
18060:
18061: =over 4
18062:
18063: =item *
18064:
18065: symblist($mapname,%newhash) : update symbolic storage links
18066:
18067: =back
18068:
18069: =cut
18070:
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